Friday, November 8, 2019

Awareness of action discrepancy and action authorship in schizophrenia The WritePass Journal

Awareness of action discrepancy and action authorship in schizophrenia Introduction Awareness of action discrepancy and action authorship in schizophrenia Introduction1. Background of the Project:2. Questions to be answered:3. Plan of Investigation:3.1. Subjects3.2. Stimuli Procedure3.3. Image Acquisition and Analysis4. Details of Data Analysis:5. Expected Outcomes:6. Details of any difficulties that can be foreseen:7. Future purpose and Theoretical Implications:References:Related Introduction This study builds on previous research which has investigated the awareness of agency in schizophrenia patients with and without delusions of control. Individuals suffering from schizophrenia can show delusions which cause them to believe that their thoughts and actions are in control of external forces. In such individuals, previous research has shown that there is increased and abnormal activity in certain brain areas when compared to healthy subjects. This fMRI study therefore investigates how these brain areas respond in two different tasks: 1) awareness of action discrepancy, and 2) awareness of action authorship. An experimental paradigm used by Farrer et al (2007) will be replicated, using a manual peg removal task. It is expected that in healthy individuals and schizophrenics without delusions of control will show normal activity in the specified brain areas in both of the studies. However, schizophrenics with delusions of control will show abnormally high activity in both st udies, demonstrating an abnormality in brain function. Scientific Summary (max 200 words): Currently, there is a wealth of research investigating action authorship in healthy individuals and schizophrenics. These have shown that the rIPL, specifically the Ag, and the TPJ in healthy subjects and schizophrenics without delusions of control show increased BOLD signals to the experience of agency (self or other). However, it has been found that schizophrenics with delusions of control exhibit hyperactivity in these areas, and are more likely to misattribute an action to themselves or an external force. An experimental paradigm used by Farrer et al (2007) will be replicated, using a manual peg removal task – as research is somewhat ambiguous when it comes to brain activity relating to awareness of action discrepancy and awareness of action authorship, the two will be separated into two studies. It is expected that in both studies healthy subjects and schizophrenics without delusions of control will show normal brain function – rIPL activity to detecting a delay in the first study, and TPJ activity to the experience of agency uncertainty. However, the schizophrenics with delusions of control in study 1, will show hyperactivity of the rIPL and TPJ BOLD signals due to their perceived ambiguity of action agency, and study 2, will show similar results as they misattribute the action to external forces more so than the other subjects. 1. Background of the Project: Distinguishing oneself from others is something we all take for granted and give the self-other distinction and the source of our perceptions very little explicit thought in everyday life. It seems that the self-other distinction is automatic and operates via non-conscious cognitive processes and aids us in daily social interactions and situations (van den Bos Jeannerod, 2002). However, this ability is not clear-cut and definite in all individuals as it can be impaired to varying extents in a range of pathological and psychiatric disorders, i.e. schizophrenia. Schizophrenia is characterised by irregular beliefs, behaviours and experiences. Additionally, patients can typically exhibit symptoms which indicate abnormalities in self-attributing their own actions and thoughts: symptoms such as acoustic or verbal hallucinations and delusions of alien control can all relate to a sense of losing authorship/agency and giving the feeling of being controlled by external forces (Mellor, 1970; Spence et al, 1997). Schneider (1995) classed these as the first-rank symptoms and these were explained by the individuals losing their normal capability to monitor their self-generated intentions and actions (Feinberg, 1978; Frith, 1992). Before considering where these deficits lie in schizophrenia individuals, it is important to establish how the brain areas of healthy subjects function in response to agency tasks. Functional neuroimaging has allowed the neural correlates of motor control to be examined in great detail. In healthy subjects, awareness of action has been associated with the right inferior parietal lobule (rIPL) (Frith et al, 2000; Sirgu et al, 2004). Additionally, increased activity has been reported in specifically the right angular gyrus (Ag) of the rIPL when healthy subjects show an awareness that they are not in control of a certain motor action (Farrer Frith, 2002; Farrer et al, 2007). Further evidence has found that the Ag activity is correlated with the degree of discrepancy between the intended consequence of the action and the actual consequence of the action (Farrer et al, 2003). Other neuroimaging research has demonstrated that when healthy subjects do not feel authorship of an action or when they sensed a discrepancy between predicted and actual movements, activity in the temporo-parietal junction (TPJ) was increased (Leube et al, 2003; David et al, 2007; Farrer et a l, 2008; Spengler et al, 2009). This suggests that the TPJ has a very important role in whether we feel a sense of authorship of an action or if there is a discrepancy present. The first model which accounts for the mechanisms underlying the sense of agency is the Predictive Forward Model of motor control (Wolpert et al, 1995; Frith et al, 2000; Haggard, 2005). This model states that when an action is performed, predictions are made about the sensory movement consequences; this is based on the motor efference copy (von Holst Mittelstaedt, 1950). Next, such predictions are compared with real sensory feedback signals which arise as a consequence of the movement and these contribute to a sense of agency if no error signals are arise. If the comparison fails, and error signals occur, then the action is experienced as other-generated, or as action failure which can be corrected without conscious awareness (Slachesky et al, 2001). Now, considering schizophrenia individuals, delusions of control can comprise the belief that one’s actions are being influenced by an external force/agent (e.g. an alien, spirit or machine) (Mellor, 1970). When patients with such delusions are compared to schizophrenics without delusions of control they show impaired motor performance (Mlakar et al,, 1994; Spence et al, 1997). Recently, neuroimaging studies have allowed motor control and any dysfunctions in the neural correlates to be investigated. Firstly, research has shown that like healthy subjects, schizophrenic patients show increased activity in the rIPL when looking at action authorship; however, a different pattern is seen. The spontaneous resting activity of the rIPL is significantly higher than that of healthy subjects (Spence et al, 1997; Whalley et al, 2004; Jeannerod, 2009; Jardri et al, 2011) and additionally, this activity is poorly modulated by a discrepancy between predicted movement and actual movement cons equences (Farrer et al, 2004). This would suggest that there is a deficit in the parietal mechanism which could be responsible for the impaired sense of agency found in schizophrenia. In relation to the TPJ, there have been anatomo-functional changes which have been reported in schizophrenia (Torrey, 2007; Wible et al, 2009), and sulcal displacements and volume reductions in this region were evidenced in patients who reported delusions of control (Maruff et al, 2005; Plaze et al, 2011). Previous studies have not been able to disambiguate between brain activity related to awareness of action discrepancy and awareness of action authorship in schizophrenic patients. Therefore, the present study is going to use a slight modification of Farrer et al (2007) experimental paradigm in order to clarify which brain areas are functioning or functioning abnormally in response to the task. It is unclear specifically which process recruits which aforementioned brain regions and this can be achieved by using an experimental design which breaks down the processes into two separate methods. Two fMRI studies will be undertaken and manipulations will include: 1) the awareness of one’s own action being consistent with the predicted action and 2) the experience of being the agent or not being the agent of an action (i.e. authorship/agency). Study 1 will include delays in visual feedback of actions to manipulate the relationship between predicted and actual sensory consequences of the action. Therefore, brain activity can be monitored to see when subjects are aware vs. unaware of these discrepancies with no bearing on authorship. Uncertainty of authorship will be introduced in study 2 to allow the observation of brain activity in response to manipulations of action authorship. 2. Questions to be answered: Will a difference be found in rIPL and TPJ activity of healthy subjects, schizophrenics with delusions of control and schizophrenics without delusions of control in study 1? Will a difference be found in rIPL and TPJ activity of healthy subjects, schizophrenics with delusions of control and schizophrenics without delusions of control in study 2? Will there a difference in brain activity between studies 1 and 2? 3. Plan of Investigation: 3.1. Subjects In accordance with medical research guidelines, after complete description of the study, written informed consent will be obtained from each participant. 12 schizophrenics with delusions of control (6 male, 6 female), and 12 schizophrenics without delusions of control (6 male, 6 female) will be recruited from London teaching hospitals, satisfying the DSM IV-R criteria for schizophrenia. Additionally, 12 healthy subjects (6 male, 6 female) will be used as controls, matched on age, sex and IQ. Each participant will be identified as right hand dominant. A quantitative assessment of the schizophrenia symptoms will be performed using the PANSS (Kay et al, 1987). Criteria for the schizophrenic patients with delusions of control are that they score 4 or 5 on the â€Å"delusions of control† item in the Scale for Assessment of Positive Symptoms (Andreasen, 1984). The criteria for the schizophrenics without delusions of control will be that they have never experienced such delusions. Exclusion criteria will include any history of substance abuse or dependency, as well as any history of serious head injury or any other neurological or psychiatric disorders. 3.2. Stimuli Procedure As stated before, the experimental paradigm is very similar to Farrer et al (2007). Study 1: A manual peg task will be performed with visual feedback delayed by 0, 50, 100, 150, 200, 300 or 300 ms. A board with 33 holes and 25 pegs will be used. For each experimental block the placement of the pegs will be different to avoid any recall of peg positioning. An infrared camera will film the grid and this image will be sent to a delay unit and be delayed for the required time. The feedback image will then be linked to the LCD projector so that the subjects are able to see the delayed action feedback on the rear projection screen at the head of the bore. Therefore there are 7 conditions: 1 with no delay, and 6 with varying delays. A block design will be used with 8 blocks (20s each); the subjects will have to remove the pegs from the board for the 20s duration – this will then be followed by a rest condition with no action required or stimuli present. Each run involved the 7 conditions in a counterbalanced order. After each block finishes, each subject will be asked to state whether they perceived delays in the visual feedback of their movements: the right hand thumb down for â€Å"no† and thumb up for â€Å"yes†. Study 2: The procedure and stimuli will be the same as study 1. However, the subjects will be required to perform index and middle finger alternating actions without pause whilst watching the feedback screen. The delays used will be 800 and 1000ms. Each run will consist of 120s of alternating finger movement, and 30s rest and will be repeated 5 times. The subjects will be told that they can either see their own or another’s movements after the delay, and this would occur randomly. However, in fact subjects will only be able to see their own movements delayed, causing them to switch from self to other. They also will be required to assert whether they think they see themselves or another individual carrying out the action. They will be required to press one of two buttons to show this. To prevent any other source of recognisable information that could give away the authorship of the movement, subjects will be required to wear a snug fitting glove to prevent any recognition cues . 3.3. Image Acquisition and Analysis Studies 1 and 2 used the same functional imaging acquisition procedure. A 1.5-Tesla MRI scanner with a SENSE head coil will be used. For each run an ultrafast echo planar gradient echo imaging (EPI) sequence sensitive to blood oxygenation level-dependent (BOLD) contrast will be used to obtain 25 slices per time repetition, (4.5mm thickness, 1mm gap, in plane resolution, 3.125 x 3.125mm). TR = 2500ms, TE = 35ms. A co-planar, T1-weighted, axial fast spin echo sequence will be used to acquire 25 slices (4.5mm slice thickness with 1mm gap), TE = Min full, TR = 650ms, ET = 2, field of view = 24cm. A whole brain T1-weighted structural image will also be acquired (0.940.941.2mm) (Farrer et al, 2007). A head restraint will also be used to reduce any head movement during the scan in order to reduce any motion artefact. 4. Details of Data Analysis: Both studies 1 and 2 will perform image analyses and statistical analyses using the SPM99 (http://fil.ion.ucl.ac.uk/spm/software/spm99). Functional scans will be realigned, spatially normalised and smoothed using a Gaussian kernel to remove any movement artefacts and to place the data from each subject into a common anatomical frame. The statistical analysis is similar to the analysis carried out by (Farrer et al, 2007). Study 1: Two statistical analyses of the fMRI data will be performed. Firstly, movement-related activity, a simple contrast between the experimental blocks and the rest blocks. Secondly, delay-detection activity, the subjects’ responses in the detection of the delay will allow the assessment of between trials where subjects did or did not perceived the delay (Farrer et al, 2007). Study 2: Two statistical comparisons will be performed. Firstly, movement-related activity, the experimental blocks across all conditions for each subject will be grouped and the main effect of task will be created. Secondly, perturbed agency, the subjects’ response to the visual feedback will allow differentiation between trials where the subject experienced self or other action authorship. (Farrer et al, 2007). For both studies, one-tailed t-tests will be used for each of the contrast images. The set of t-values obtained will constitute a statistical parametric map which will show significant areas of BOLD signals. 5. Expected Outcomes: The Expected fMRI Results: Study 1: Consistent with prior research, it is expected that the healthy subjects will show significant activation in the in the rIPL, specifically the Ag, when detecting a discrepancy (detection of delay) (Frith et al, 2000; Sirgu et al, 2004; Farrer Frith, 2002; Farrer et al, 2007). No TPJ activity is expected in the healthy subjects as study 1 is not meant to bring about the experience of agency uncertainty; this will be supported by previous research which shows the TPJ to have a role in determining if an action is not ours (Leube et al, 2003; David et al, 2007; Farrer et al, 2008; Spengler et al, 2009). Schizophrenics without delusions of control are predicted to show very similar brain activation to the healthy subjects; this can be justified because they have had no prior experience of delusions of control and shouldn’t have any problems with determining action authorship (Spence et al, 1997) – however, this is not entirely certain, and only a prediction. As for the schizophrenics with delusions of control, it is expected that brain activity will be abnormal; the delay detected by the patient could elicit hyperactivation in the rIPL, specifically the Ag, and the TPJ and give rise to misattribution of agency (Spence et al, 1997; Whalley et al, 2004; Jeannerod, 2009; Jardri et al, 2011). Unlike the healthy controls and schizophrenics without delusions of controls, it is predicted that they will be unable to attribute the movement to themselves after the delay. Study 2: It is expected that because of the ambiguity of the movement in terms of agency, healthy subjects and schizophrenics without delusions of control will show increased activity in the rIPL, but also in the TPJ due to the uncertainty of agency (Frith et al, 2000; Sirgu et al, 2004; Farrer Frith, 2002; Farrer et al, 2007; Leube et al, 2003; David et al, 2007; Farrer et al, 2008; Spengler et al, 2009). After being told that the action is ambiguous (i.e. self or other) it is predicted that the schizophrenics with delusions of control – similar to study 1 will be more likely to misattribute the movement to another agent with a greater perturbation of their sense of agency compared to the other subjects. Additionally, the activity in the rIPL and TPJ is expected to show hyperactivation in comparison to the other subjects. (Spence et al, 1997; Whalley et al, 2004; Jeannerod, 2009; Jardri et al, 2011). Finally, it is expected that there will be a greater overlap between brain areas ac tive in both studies for the schizophrenics with delusions of control compared to the other subjects. 6. Details of any difficulties that can be foreseen: Although the subjects will be paid for their participation in the study, locating both schizophrenics with and without delusions of control may prove to difficult as they must be situated near the fMRI site as it is very unlikely that they will wish to travel long distances due to time and other issues. The criteria provided will narrow down the potential sample further. When using fMRI, it is important to acknowledge that the BOLD signals are considered to be an indirect measure of brain activity, therefore potentially, all brain responses may not be recorded for each of the stimuli. However, fMRI is viewed as one of the most effective ways to investigate brain activity without invasive procedure in this paradigm. It will be made certain that all precautions are met, and imaging acquisition and analysis are meticulously carried out. Due to the nature of schizophrenia and the wide variety of symptoms shown, it is possible that during the scanning process, certain subjects might experience symptoms that are debilitating to the scanning process which are out of the control of the experimenter. Medical staff will be on standby in case any violent/aggressive symptoms occur. There is a small chance of such an incident happening, but careful preparation can minimise the risk. 7. Future purpose and Theoretical Implications: If the results are as expected, this will have significant implications for several research areas. Firstly, it will add to the abundance of literature on the involvement of the rIPL and TPJ in response to action discrepancy and authorship in healthy individuals (e.g. (Frith et al, 2000; Sirgu et al, 2004; Farrer Frith, 2002; Farrer et al, 2007; Leube et al, 2003; David et al, 2007; Farrer et al, 2008; Spengler et al, 2009). Furthermore, it will demonstrate that symptoms vary massively across schizophrenia patients – there are deficits in the functioning of neural correlates (i.e. the rIPL and TPJ) between those with and without delusions of control, and will add to the relevant literature (e.g. (Spence et al, 1997; Whalley et al, 2004; Jeannerod, 2009; Jardri et al, 2011). Future research could delve into the severity of the symptoms of both the schizophrenics with and without delusions of control, and investigate whether it has an effect on subsequent brain activity. If a significant correlation is found it could be used as a â€Å"state-marker† of schizophrenia. As Jardri et al (2011) suggested such an increase in activity of the rIPL and TPJ in those with delusions could demonstrate a neuro-physiological signature in those suffering from the disease. Additionally, it gives further evidence that the deficient parietal mechanism is responsible for the impaired sense of agency demonstrated in schizophrenics with delusions of control. Therefore, as they have problems linking their intentions to their actions, it suggests that for future research the disconnection should not be looked for at the sensorimotor level, but rather, like this experiment, it should be looked for within the cortical network which is known to be responsible for the representations of motor function. References: David, N., Cohen, M., Newen, A., Bewernick, B., Shah, N., Fink, G., Vogeley, K. (2007). The extrastriate coretex distinguishes between the consequences of one’s own and others’ behaviour. Neuroimage, 26, 1004-1014. Farrer, C., Frith, C. (2002). Experiencing oneself vs another person as being the cause of an action: the neural correlates of the experience of agency.Neuroimage, 15, 596-603. Farrer, C., Franck, N., Georgieff, N., Frith,C., Decety, J., Jeannerod, M. (2003). Modulating the sense of agency: a PET study. Neuroimage, 18, 324-333. Farrer, C., Franck, N., Georgieff, N., Frith, C., Decety., d’Amato, T., Jeannerod, M. (2004). Neural correlates of action attribution in schizophrenia. Psychiatry Res, 131, 31-44. Farrer, C., Frey, S., van Horn, J., Tunik, E., Turk, D., Inati, S., Grafton, S. (2007). The angular gyrus computes action awareness representations. Cereb Cortex, 18, 254-261. Feinberg, I. (1978). Efference copy and corollary discharge. Implications for thinking and its disorders. Schizophr Bull, 4, 636-640. Frith, C. (1992). The cognitive neuropsychology of schizophrenia. Lawrence Erlbaum Assocaites, Hove. Frith, C., Blakemore, S., Wolpert, D. (2000). Abnormalities in the awareness and control of action. The Royal Society, 355, 1771-1788. Haggard, P. (2005). Conscious intention and motor cognition. Trends Cogn Sci. 9, 290-295. Jardri, R., Pins, D., Lafarge, G., Very, E., Ameller, A., Delmaire, C., Thomas, P. (2011). Increased overlap between the brain areas involved in self-other distinction in schizophrenia. Plos One, 6, 3. Jeannerod, M. (2009). The sense of agency and its disturbances in schizophrenia: a reappraisal. Exp Brain Res, 192, 527-532. Kay, S., Fiszbein, A., Opler, L. (1987). The positive and negative syndrome scale (PANSS) for schizophrenia. Schizophr Bull, 13, 261-276. Leube, D., Knoblich, G., Erb, M., Grodd, W., Bartels, M., Kircher, T. (2003). The neural correlates of perceiving one’s own movements. Neuroimage, 20, 2084-2090. Maruff, P., Wood, S., Velakoulis, D., Smith, D., Soulsby, B., et al. (2005). Reduced volume of parietal and frontal association areas in patients with schizophrenia characterised by passivity delusions. Psychol Med, 35, 783-789. Mellor, C. (1970). First rank symptoms of schizophrenia. Br J Psychiatry, 117, 15-23. Mlakar, J., Jensterle, J., Frith, C. (1994). Central monitoring deficiency and schizophrenic symptoms. Psychol Med, 24, 557-564. Plaze, M., Paillere-Martinot, M., Penttila, J., Januel, D., de Beaurepaire, R. Et al. (2011). Where do auditory hallucinations comes from? A brain morphometry study of schizophrenia patients with inner or outer space hallucinations. Schizophr Bull, 37, 212-221. Sirgui, A., Daprati, E., Ciancia, S., Giraux, P., Nighohhossian, N., Posada, A., Haggard, P. (2004). Altered awareness of voluntary action after damange to the parietal cortex. Nat Neurosci, 7, 80-84. Slachevsky, A., Pillon, B., Fourneret, P., Pradat-Diehl, P., Jeannerod, M., Dubois, B. (2001). Preserved adjustment but impaired awareness in sensory-motor conflict following prefrontal lesions. J Cogn Neurosci, 13, 332-340. Spence, S., Brooks, D., Hirsch, S., Liddle, P., Meehan, J., Grasby, P. (1997). A PET study of voluntary movement in schizophrenic patients experiencing passivity phenomena (delusions of alien control). Brain, 120, 1997-2011. Spengler, S., Yves von Cramon, D., Brass, M. (2009). Was it me or was it you? How the sense of agency originates from ideomotor learning revealed by fMRI. Neuroimage, 46, 290-298. Torrey, E. (2007). Schizophrenia and the inferior parietal lobule. Schizophr Res, 97, 215-225. Van den Bos, E., Jeannerod, M. (2002). Sense of body and sense of action both contribute to self-recognition. Cognition, 85, 177-187. Von Holst, E., Mittelstaedt, G. (1950). Das reafferenzprinzip. Naturwissenschaften, 37, 464-476. Whalley, H., Simonotto, E., Flett, S., Marshall, I., Ebmeier, K., Owens, D., Goddard, N., Johnstone, E., Lawrie, S. (2004). fMRI correlates of state and trait effect in subjects at genetically enhances risk of schizophrenia. Brain, 127, 478-490. Wible, C., Preus, A., Hashimoto, R. (2009). A cognitive neuroscience view of schizophrenic symptoms: abnormal activation of a system for scoail perception and communication. Brain Imaging Behav, 3, 85-110. Wolpert, D., Ghahramani, Z., Jordan, M. (1995). An internal model for sensorimotor integration. Science, 269, 1880-1882.

Tuesday, November 5, 2019

Craniates - Crainata - the Animal Encyclopedia

Craniates - Crainata - the Animal Encyclopedia Craniates (Craniata) are a group of chordates that includes hagfish, lampreys, and jawed vertebrates such as amphibians, birds, reptiles, mammals, and fishes. Craniates are best described as chordates that have a braincase (also called a cranium or a skull), mandible (jawbone) and other facial bones. Craniates do not include simpler chordates such as lancelets and tunicates. Some craniates are aquatic and have gill slits, unlike the more primitive lancelets which have pharyngeal slits instead. Hagfishes Are the Most Primitive Among craniates, the most primitive is the hagfishes. Hagfishes do not have a bony skull. Instead, their skull is made up of cartilage, a strong but flexible substance that consists of the protein keratin. Hagfishes are the only living animal that has a skull but lack a backbone or vertebral column. First Evolved Around 480 Million Years Ago The first known craniates were marine animals that evolved about 480 million years ago. These early craniates are thought to have diverged from lancelets. As embryos, craniates have a unique tissue called the neural crest. The neural crest develops into a variety of structures in the adult animal such as nerve cells, ganglia, some endocrine glands, skeletal tissue, and connective tissue of the skull. Craniates, like all chordates, develop a notochord that is present in hagfishes and lampreys but which disappears in most vertebrates where it is replaced by the vertebral column. All Have an Internal Skeleton All craniates have an internal skeleton, also called an endoskeleton. The endoskeleton is made up of either cartilage or calcified bone. All craniates have a circulatory system that consists of arteries, capillaries, and veins. They also have a chambered heart (in vertebrates the circulatory system is closed) and a pancreas and paired kidneys. In craniates, the digestive tract consists of a mouth, pharynx, esophagus, intestine, rectum, and anus.   The Craniate Skull In the craniate skull, the olfactory organ is located anterior to the other structures, followed by paired eyes, paired ears. Also within the skull is the brain which is made up of five parts, the romencephalon, metencephalon, mesencephalon, diencephalon, and telencepahlon. Also present in the craniate skull are a collection of nerves such as the olfactory, optic, trigeninal, facial, accoustic, glossopharygeal, and vagus cranial nerve.   Most craniates have distinct male and female sexes, although some species are hemaphroditic. Most fish and amphibians undergo external fertilization and lay eggs when reproducing while other craniates (such as mammals) bear live young. Classification Craniates are classified within the following taxonomic hierarchy: Animals Chordates Craniates Craniates are divided into the following taxonomic groups: Hagfishes (Myxini) - There are six species of hagfishes alive today. Members of this group have been the subject of much debate about how they should be placed within the classification of chordates. Currently, hagfishes are considered to be most closely related to lampreys.Lampreys (Hyperoartia) - There are about 40 species of lampreys alive today. Members of this group include northern lampreys, southern topeyed lampreys, and pouched lampreys. Lampreys have a long, slender body and a skeleton made of cartilage.Jawed vertebrates (Gnathostomata) - There are about 53,000 species of jawed vertebrates alive today. Jawed vertebrates include bony fishes, cartilaginous fishes, and tetrapods.

Sunday, November 3, 2019

First nation studies - R. V. Sparrow case Study Example | Topics and Well Written Essays - 750 words

First nation studies - R. V. Sparrow - Case Study Example As the categories of Aboriginal rights in Section 35 were not clearly mentioned in the Act, it was claimed that the aboriginal right to fishing was not extinguished before implementation of the 1982 Constitution Act and hence, the arrest of Ronald Sparrow in this case was unjustified (Binnie 217). The claim was put up in the court of British Columbia with the full support of Musqueam band who viewed the arrest of their member, Ronal Sparrow to be unjustified. They opposed that the government had no rights to infringe upon the aboriginal rights of people in undertaking activities of fishing, hunting, etc as the these rights were not extinguished before the Section 35 of 1982 Constitution Act was passed (Tennant 375). The claim received support from the scholars and human rights activists. The supporters of this case were of the view that the provincial regulations in British Columbia discriminated the aboriginal rights of the people as opposed to the non-aboriginal rights which were unjustified in terms of law of the land. The court case of Ronald Sparrow continued for about six years starting from the initial point of claim in the lower courts to the final verdict being given by the Supreme Court. After the arrest of Musqueam band member, Ronald Sparrow in 1984, the case was filed which eventually moved to the Supreme Court in 1988 and continued till 1990. The proceedings of the court case started with the conviction of Ronald Sparrow as he accepted the fact that he was fishing with a net larger than that mentioned in his food license. However, in his defense Mr. Sparrow argued that he was at the same time executing an aboriginal right of fishing which has been inherited by him from his ancestors. The Crown on the other hand tried to establish that the aboriginal rights have been regulated from the time the Constitution Act of 1982 has been

Friday, November 1, 2019

Working in Education on Many Levels Personal Statement

Working in Education on Many Levels - Personal Statement Example Education majors are essentially divided into two categories, Secondary Education and Elementary Education. Secondary Education programs are intended to equip teachers for educating young adolescent students up through graduation from high school. In most states, this involves instruction from sixth or seventh grade up through twelfth grade. Teachers are usually certified in an individual subject at the secondary level. So, a typical student will graduate with a B.S Ed. in Secondary Education with a certification to teach Chemistry, Geography, English, Foreign Language, etc. Elementary Education programs usually certify a teacher to teach from Kindergarten through sixth grade. In some states, this certification is broken into Primary (K-2) and Elementary (3-6) Education certifications. Most states avoid this, however, allowing teachers certified in Elementary Education to teach from Kindergarten through sixth grade. The coursework for Elementary and Secondary teachers is quite differ ent. Both will receive instruction in Educational Psychology and Methods of Instruction. They will also complete classes on Assessment and Evaluation that are similar, but his is where most of the similarities end. Elementary Education programs are more intensive in instructing teachers in strategies for building basic literacy in math and reading (Cooper, 1993). They will receive coursework in reading strategies, phonics and computational instruction that Secondary Education students do not receive. Secondary students will focus more on learning directly related to their area of certification. For example, a student studying to be a Chemistry teacher will have a core of chemistry classes that will include classes such as Chemicals Engineering and Organic Chemistry. The capstone for most teaching programs, both Elementary and Secondary, is a semester of student teaching, where the student is assigned to a mentor and teaches, with guidance, in a live classroom with his or her mentor. This experience is vital, because it is the first time students really get to experience what a real teacher does day after day (Ryan, 1992). It is not uncommon for students to leave Education programs after student teaching because they find they do not enjoy the duties teachers are expected to do or they have trouble learning how to manage students. The field of education has bee viewed by some as a safe place to work in many ways. Traditionally, teachers do not need to worry about fluctuations in the economy because they rarely are retrenched, even when tax revenue declines. Teaching has been viewed as an easy job with lots of perks, such as summers off and a short workday. The one downside to teaching, in the traditional point of view, is the relatively low pay when compared to other professions that require a college degree (Students, 2012). This view of teaching and working in Education is still intact, but has become dated over the past several years. The first way this myth about working in Education has been shattered is a result of the recent economic depression. Education, as a sector of the economy, has lost a record number of jobs (Teachers, 2012). School districts all across America have been dismissing teacher as they try to make their precious tax dollars stretch farther.  

Wednesday, October 30, 2019

World war 2 in Europe Annotated Bibliography Example | Topics and Well Written Essays - 750 words

World war 2 in Europe - Annotated Bibliography Example The countries that suffered during the First World War namely Austria and Germany wanted to level the scores with their arch rivals (Dowswell). The reasons of world war two can be investigated in terms of the economic aspects, and the political aspects. The nations that were defeated in the First war of the Century were growing tired of the indemnities while others felt the jolts of Great depression that had originated from the United States. This resulted in sense of uneasiness and discomfort amongst the nations (Gordon). The war was being fought amongst the Allies and Axis. The Axis constituted the Germany, Japan and Italy. These three forces were enjoying considerable strength and power and aimed at oppressing the others. While the Allies on other front had a larger bench than the Axis and the main players in the league included United Kingdom, The former Soviet Union ( modern day Russia), France and the United States who tried to keep itself neutral, though it was pushed into it due to the grave nature of the entire war(Dickson). An important proceeding on this behalf was the internal build up of German nation in form of Adolf Hitler and his affiliated part Nazi that came into power in the third decade of 20th century (McDonough). Along with few other policies, the prime policy included revenge on behalf of the German nation that was brought upon them in the First World War. The war and ambitions were based more on unethical grounds and were strongly repugnant to the morality. His motto was the elimination of the Jews from the surface of Earth and considered the German nation to be superior to others. The handicapped and the Trans genders were direct victims of this mass concept of elimination (Aronson). Italian head Mussolini joined hands with Hitler in bid to strengthen his nation and economy in form of invasion and unrest in other parts of the world. Though the war officially started with Invasion of Poland, yet certain small incidents and events

Monday, October 28, 2019

Comparison of Healthcare Systems: Russia and the US

Comparison of Healthcare Systems: Russia and the US Joel Adewuyi Madalyn Arnott Stephanie Armstrong Lauren Ball Russian federation has 17 million km2 of land surface area, making it the largest country in the world. The country has major deposits of coal, timber, oil, and assorted minerals and is thus perceived by many as a rich country who can provide universal healthcare to her citizens. Today, the healthcare system in Russia unlike in the United States is universal but has been plagued with poor quality and deficient services and thus in the process of being reformed by the Russian government. It is a universal system only in theory but the poor quality has made many Russians result to paying under the counter-bribes in order to get their necessary treatments (Russian, 2017). Recent government reforms, and measures to increase efficiency such as increase in funding have begun to address the ongoing problem in the healthcare sector. However, even with the new reforms in place, since the 1990s, there has been no significant improvement in the healthcare system (Russian 2017). The biggest problem confronting this system has been attributed to lack of funding by the government. Historical Perspectives The end of the Soviet Union gave birth to the Russian Federation in 1991 and since then the health status of the Russian population has been on a dramatic decline. Rates of medical conditions like cancer, heart disease, and tuberculosis are the highest compared to any other industrialized country. Government spending on healthcare which was 7% of Gross National Product (GNP) in the 1960s before Soviet Unions breakup was reduced to 3% after the breakup (site wide, 2017). Most of the government funding started going to industrial and military developments and lesser priority given to the healthcare system and by the end of 1995 less than 1 percent of Russias budget was allocated to public health in comparison to more than 12 percent in the United States (site wide 2017). With this, the public health delivery system in Russia went into the crisis with poorly trained medical personnel, lack of modernized equipment, poor payments for the medical personnel, poor personal hygiene and diet, lack of exercise, virtually nonexistent preventive medicine etc. The lack of accessibility to national health system facilities, with most patients standing in line at clinics for an entire day before receiving treatments coupled with non-affordability prescriptions drugs, has encouraged them resulting into unorthodox alternatives such as herbal medicine, mysticism, and faith healings. Russian Healthcare System Today There are several issues that can be observed in the modern Russian healthcare system. For example; there is limited access to healthcare facilities, and the sanitation in the facilities is below United States standards. The Healthcare system in the United States is often viewed as the best in the world, but it has several flaws as well. There is limited access for veterans and several hospitals charge as much as three times what others charge. There are also several benefits to the United States healthcare. Virtually on every corner of any town in the U.S there is access to a hospital or an emergency room. Also in the U.S., there are several payment plans individuals can use. In the Russian healthcare system one of the main problems is limited access to healthcare facilities. Only four percent pay their doctors when they have a medical procedure (Allianz, 2009 p 5). This causes a shortage of medical professionals. The lack of medical professionals causes individuals to rely on themselves for medical treatment. Several problems arise when individuals rely on their own knowledge. Another major issue with this system is the unsanitary working conditions of medical practices and medical professionals themselves. The lack of sanitation in facilities causes individuals to be more susceptible to diseases and other types of infections (Antonova, 2016 p3). The Russian healthcare system has several flaws that we do not have in the United States healthcare system. In the United States, there are hospitals around every corner. This allows individuals to have access to healthcare no matter where they live, but this can have some repercussions. Although hospitals are easy to find some individuals cannot afford this care. In 2010 the Affordable Care Act was signed so everyone has access to healthcare, but individuals need to have insurance for this Act to apply to them. This although seems beneficial to all, some individuals feel that they are forced to buy insurance. One positive aspect of the United States healthcare system is the amount of insurance options available. Most individuals use insurance through their employer, and some have medical cards. One negative aspect of the healthcare system is there is little to no coverage to for veterans. Tricare only covers veterans when they are in active duty, once they retire the insurance no longer covers them. Future of Healthcare System in Russia The Russian healthcare system for sure needs improvements due to many problems. Russias population is more than 6 million lower than it was nearly two decades ago (public health, 2015). Sadly, birth rates are lower and mortality rates are higher. Over half of the deaths are due to cardiovascular disease. Other problems include cancer and external causes such as accidents and traumas. However, since 2005 the Russian healthcare system have been trying to turn things around positively. In 2006, the Russian government launched the National Priority Project (NPP) to try and change the system for the better (public health 2015). The budget for this project was over than 400 billion rubles (Russian dollars) which was granted between 2006 to 2009 (public health 2015). Many activities have been planned and accomplished through the NPP. The NPP has increased salaries of primary and emergency care physicians, purchased more primary care equipment, provided more vaccination programs, providing free medical examinations to the public, increased the promotion of fertility, and made more high-tech centers for tertiary care. These activities have increased the quality of the system and bettered it for the citizens of Russia. There have recently been very bad financial troubles in Russia yet the NPP has managed to improve the system through these ways. Fertility rates are higher, mortality rates are lower, and life expectancy for both women and men have risen. However, not all the healthcare problems have been addressed. Basic healthcare is still unfunded, there are many problems with Russias healthcare insurance, and there is little effort to face and fix the population health behavior. Until the Russian citizens take these problems into their own hands the future of Russias health will be a problem. The citizens need to stop smoking, binge drinking, and bad habits in order to enjoy better health. The Russian public needs to be able to provide healthy air, water, better food quality, safer roads, and safer work environments. Until these problems are addressed, the health challenges that Russia faces will not be fixed and will follow to the years ahead. Russias health care system has taken a turn for the worst. Consequences of a failing healthcare system have fed to declining health among the Russian population. Inefficient funds have led to cost cuts, this already damaging a weak system. Numerous medical staff had to be laid off because of this, when healthcare workers were already at a minimal amount. At this point in time Russia suffers from a high death rate, low birth rate, and low life expectancy. The total population is decreasing by 700,000 people each year (Aarva 2009). The average life span for a male is statistically shown to only reach 59 years old (Aarva, 2009). Compared to the United States, a typical average life span for men is 78 years old (Aarva, 2009). Women in Russia overall only average to 72 years old (Aarva, 2009). The fertility rates in Russia cannot meet the declining rate of population. The decline in health statistically shows to only get worse within the next 50 years, declining by 30 percent (Aarva 2009) . In Russia, the number one leading cause of death is cardiovascular disease, this is followed by alcoholism and tobacco use. The World Health Organization accounts for more than 1.2 million deaths per year from these. A growing health issue in Russia is disease, such as HIV/AIDS, a little over 1 percent of Russias population test positive (Aarva, 2009). Lancet 2012 study showed that 57 percent of those affected acquired this from drug use (Aarva, 2009). Although over looked, Russias health care system has led them to have a lot in common with 3rd world countries. Numerous factors have led to Russias health care decline; however, many believe lack of education is the number one reason for the decline. Public health policies and information is less easy to access in Russia then the United States. Russia is also lacking in resources such as a lack in medication. Russias health care doesnt have the ability to give the citizens proper health care, if this situation continues their population will significantly continue to decline. In conclusion and in fairness to the Russia federation, the truth is that despite the relatively poor health statistics and healthcare situations, Russia is not dependent on any international assistance for her healthcare funding and is nondependent on any of the developed countries. Even though, they are independent, the governments duty of a guaranteed full range of free healthcare services to her citizens has not experienced any setback, but rather has been confirmed through the newly implemented Russian constitution and the new healthcare financing laws. References Russian health care: A healthy future? (n.d.). Retrieved February 22, 2017. Site-wide navigation. (n.d.). Retrieved February 23, 2017. Public Health: Russia is Sick. The Globalist. N.p., 04 Oct. 2015. Web. 23 Feb. 2017. Landed, S. J. (2014, May 04). Overview. Retrieved February 22, 2017. Allianz. (2017). Healthcare in Russia support. Retrieved February 23, 2017. Aarva, P., Ilchenko, I., Gorobets, P., Rogacheva, A. (2009). Formal and informal payments in health care facilities in two Russian cities, Tyumen and Lipetsk. Health Policy and Planning, 24(5), 395-405. doi:10.1093/heapol/czp029 Antonova, N. (2016). Access to Healthcare in Russia: A Pilot Study in Ekaterinburg. Central European Journal of Public Health, 24(2), 152-155. doi:10.21101/cejph.a3942 O. (n.d.). Weve Got You Covered. Retrieved February 23, 2017. Dairy Products: Physio-chemicals and Microbiology Dairy Products: Physio-chemicals and Microbiology Agriculture is the single largest sector in the Pakistan, contributing 21. 8 to the gross domestic product and employing approximately 44. 7 of the workforce. Livestock is playing a vital role in the economy of Pakistan and account for 51. 8 % of the agriculture value added and 11. 3% of the national Gross Domestic Product. The milk production in country increased by 35. 6% from 1996 to 2007 (Anonymous, 2008). Pakistan dairy sector is producing 41. 3 million tons milk and is the fifith largest milk producing country in the world. Its massive herd of 60. 8 million cows and buffaloes produced 40. 76 million tons of milk in the year 2007-2008. while 56. 70 million goats produced 0. 70 million ton (Anonymous, 2008). The role of livestock sector in the rural economy of Pakistan is important as 30-35 million rural population of the country derive their livelihood from livestock production as a primary or secondary activity (Anonymous, 2008), Milk is defined as the whole, fresh, clean, lacteal secretion obtained by the complete milking of one or more healthy milk animals excluding that obtained within fifteen days before or five days after the calving or such period as may be necessary to render the milk practically colostrums free and containing the minimum prescribed percentage of milk fat and sold not fat (Goff and Griffth, 2006). Milk is a dynamically balanced mixture and is also a perishable food. It is one of few foods consumed in the natural form throught the world. Milk contain 87% water 3. 9% fat, 3. 3% protein, 5% lactose and 0. 7% ash. Milk supply body building protein, bone forming minerals, health giving vitamin and energy giving lactose and milk fat. Besides providing certain essential fatty acids it contain all essential amino acid. All the properties of milk make it an important food for growing children, adults, adolescents, invalid, convalescents and patients (Khan et al., 2005). There is a great potential for dairy industry but the sector operates mostly in the informal economy and needs a constituents effort to formalize and be able to contribute better to the national economy. There are nearly 5. 5 million small scale rural units owing less than 6 dairy herds. These small dairy holders produce 65% of all buffalos and cows milk. Out of total milk produced, 97% is in the informal sector (i. e. loose milk consumed in the village and or sold in the cities through Gawalas in unhygienic condition and without any quality standard). The small scale milk collector collect 200-400 kg milk per day from different villages. Medium scale milk collectors collect 400-800 kg milk per day in a manner similar to the small milk collectors, but on a large scale, Large scale milk collectos collect 5-to 10 tons milk per day and supply milk the dairy factories (Garcia et al, 2003). There are hardly 15 milk processing plant (mainly UHT fluid milk, milk powder and yoghurt in Pakist an). Only about 3 % milk is being processed and 97% is consumed as a raw milk (Malik, 2008). Milk and milk products are one of the most important food products with livestock origin which enjoy special significance in terms of its various nutritional properties such as protein, lactose, fat, minerals and vitamins. Many studies have been made on its constituents and physiochemical characteristics (Walstra et al,  1999). Adulteration of milk and dairy products is one of the most serious issues in the dairy industry and causes economic losses and major health problem to consumers. Due to the limited number of large dairy farms, milk handling process in the traditional system are unhygienic and there is insufficient enforcement of standards, resulting in poor quality of milk products. In order to keep the milk safe, middleman add ice to the milk, in addition microbiological contamination occur due to addition of ice in the milk. The middleman increases the milk quality by adding water, vegitable oil, whey powder and other ingredients to increase the soilds of milk. Antibiotics and Hydrogen peroxide are often used as a preservatives (Garcia et al,   2003). The adulterants in milk include water, starch, whey poxder, vegetable oil and hazourds substance such as antibiotics, caustic soda, urea, formaline, detergents and other chemicals preservatives. Adulteration in milk is a very serious issues in Pakistan. Keeping in view these facts, the present will be planned. Objectives: To study the Physio-chemicals and microbiological quality of dairy products. To determine the adulterants and residues in the dairy products. To determine the relationship of physio-chemical parameters with adulterants. To make recommendation to the Govt of Punjab in the control of adulterants in milk and other food products. Review of Literature: A study conducted on physiochemical quality of UHT milk produced from whole milk powder and stored at 4 °C and 25 °C for 48 hours. They observed that non protein nitrogen content of UHT milk increased while pH decreased with storage and the rate of change being greater at higher storage temperature. Sediment increased with longer storage period, but independent of storage temperature. With longer storage at both 3+-1 C and 25-+ 1 °C, greater sediment and lower pH were observed in UHT milk processed from older milk powder. The development of off flavors increased in UHT milk with a prolong storage period (Ernani et al, 1997). Kuo et al. 2001 studied the effect of heat treatments on the meltability of cheese. They studied cheddar cheese of different composition and low-moisture. Cheese samples were heated to 60 °C and held for 0, 10 and 20 min before allowing the melted cheese to flow. Mean meltabilities, over all ages of both Cheddar and Mozrella cheeses decreased significantly as holding time increased. Meltability of young cheese was scarcely affected by the holding time, in contrast to that of the old cheese where increasing the holding time greately reduced meltability. Khan (2004) studied the physio-chemicals changes in UHT bottled milk and found that effect of treatments and storage on sedimentation, fat, pH, acidity and SNF was highly significant. Maaximum sedimentation was observed after 12 weeks of storage, pH gradually decreased and minimum value were found after 12 weeks. Maximum acidity was found after 12 weeks and minimum was noted in the first week. Kumar and Mishara (2004), studied the effect of stabilizer addition on physiochemical, sensory, textural properties and stater culture counts of mango soy milk fortified yoghurt (MSFY). Three stabilizer namely gelatin, pectin and sodium alginate were used. The addition rate of stabilizer was 0. 2%, 0. 4% and 0. 6% w/w. Significant effect of type and addition rate on acidity, msture content and total solids ofMSFY were observed. Syneresis and acetaldehyde content of MSFY was reduced significantly. Lightness and yellowness of MSFY increased with gelatin and decreased with pectin and sodium alginate. Gelatin gave better effect on appearance and color, body and texture, flavor and overall acceptability in comparision with other stabilizer at 0. 4 % addition rate. Hardness, cohesiveness and adhesiveness of MSFY increased up to 0. 4 % stabilizer addition, while springiness and gumminess did not follow any trend. There was a significant effect of stabilizer addition on Streptococcus thermop hillus and lactobacillus delbrueckii subsp. bulgaricus counts. Griffiths et al 1988, manufactured low heat skim milk powder from raw farm bulk tank and creamery silo milk which had been stored at 2 °C for 24 and 72 hours. During the storage period psychrotroph count increased by about 1log cycle after 24 hour aand 2 log cycle after 72 hours. There was no increase in thermoduric or spore counts of the milk under these storage condition. The powder manufactured from these milk was good bacteriological quality and conformed to ADMI recommendations regarding moisture content, titratable acidity and solubility. They concluded that storage of raw milk at 2 C had no deterintal effect on the heat stability of the powder manufactured from it when reconstituted to both 9 and 22% total solid concentrations. Molska et al 2003 studied the microbiological quality of kefir (61 samples) and yoghurt (92 samples) purchased in retail network in Warsaw. The total number of bacteria in at least 90% of yoghurt and 73% of kefir was in the range of 10(7)-10(9) cfu/g. The domestic group of bacteria in kefir were mesophilic lactic acid streptococci and in yoghurt S. thermophillus. The number of L. delbrueckii in 40 % of sample was less than 10(7) cfu/g. More than 86 % of kefir and 97 % of yoghurt analysed were free from coliform bacteria., B. cereus, mould and yeast. About 48 % of kefir samples did not fulfilled the FAO/WHO requirements concerning the number of yeast. Kessel et al 2004, determine the test for standard plate count (SPC) and fecal coliforms in the bulk tank milk in the inited state. As part of the 2002 survey, 861 bulk tank milk sample were collected from farms in 21 states, coliform were detected in 95 % samples. There were no apparent relationship between SPC and incidence of salmonella or L. monocytogenes. Although the prevalence of L. monocytogenes and salmonella was low, these pathogens represent a potential risk to consumers of raw milk and raw milk products. Nero et al 2004 condcted a study to avaluate the microbiological quality and the presence of Listeria monocytogenes and Salmonella spp. In the raw milk produced in 210 small and medium farms located in four important milk producing Brazilian states. In 66% of the selected farms the milkng was manual. In 33 % of them, the milking was semi-automatic and only 1 % were equipped wit hfully automatic milking systems. All raw milk samples were negative for L. monocytogenes and salmonella spp. Mesophilic aerobes counts were higher than 10^5 CFU /ml in 75. 7% of the samples. In 80. 4%, coliforms were over 10^2CFU /ml. Escherichia coli were detected in 36. 8% of the samples. Aygun et al 2005 purchased 50 randomly selected samples of Carra cheese, raw milk cheese, from different retail markets in the Antakya region and were investigated for microbiological quality and some chemical analyses. In their samples, the number of microorganisms were found as follows : Staphylococcus aureus 2. 51* 10^3 cfu/g, coliform 1. 02*10^4 cfu/g, E. coli 4. 27*10^3 cfu/g, Salmonella were not detected in any of the samples. Mean moisture, salt and fat content of Carra cheese were found as 41. 26%, 7. 82% and 26. 77% respectively. The pH value of the samples varied b/w 4. 53 and 6. 32 with the mean of 5. 24. The microbiological finding showed the presence of high counts of microorganisms investigated and the poor hygienic quality of Carra cheese. Little et al 2008 determined the microbiological quality of two retail fresh ripened and semi hard cheeses made from raw, thermized or pasteurized milk. Raw or thermized milk cheeses were of unsatisfactory quality due to level of Staphylococcus aureus st 10^4 cfu/g, E. coli at 10^5 cfu/g, whereas pasteurized milk cheeses were of unsatisfactory quality due to S. aureus at 10^3 cfu/g and E. coli at 10^3 cfu/g. Salmonella was not detected in any samples. They emphasize the need for applying and maintaining good hygeinc practices throught the food chain to prevent contamination and bacterial growth. Labelling of cheeses with clear information on whether the cheese was prepared from raw milk also requires improvement. Sheppard et al 1985 demonstrated the application of various analytical methods to the detection, identification and quantitation of vegetable oil adulteration o ice cream. Total fat content, sterol, long and chain fatty acid, vit E, Reichert à ¢Ãƒ ¢Ã¢â‚¬Å¡Ã‚ ¬Meissle values and Polenske values were measured in ice cream. All method except total fat determination were capable of detecting vegetable oil adulteration. Sterol determination was the most effective and versatile measurement because it provided information not only on the detection and extent of adulteration but also on the possible identity of the adulterant. Fox et al 1988, described a test for routine screening of Mozzarrella Cheese and butter for vegetable fat adulteration. Fat is extracted and sponified. The potassium salts of the fatty acids are measured through direct gas chromatographic analysis. A ratio, calculated from the concentration of butyric acid and oleic acid is used to avaluate the puroty of the samples. The test offers good precision and can detect less than 10% partially hydrogenated vegetable fat. Kumar et al 2002, reported that adulteration in milk and milk products has reached an alarming stage. Milk fat is being mixed or replaced with cheaper vegetable oil. Therefore, often more than one test has to be employed to confirm the purity of milk fat. The various method for the detection of adulteration in milk at is based on the physical properties, chemical properties and presence or absence of specific constituents of either milk fat or adulterant fats. Jha and Matsuoka 2004, conducted a study on the adulteration of natural milk by synthetic milk, prepared by mixing appropriate amount of vegetable oil, urea, detergent powder /shampoo, caustic soda, sugar /salt and skim milk powder to water. Detection of adulterants is difficult by a single method and sometimes more than two methods are required to confirm the presence. The potential of near-infrared spectroscopy were investigated (NIRS) in the wavelength range of 700-1124. 8 nm. Material And Methods: Collection of Samples: The dairy products samples will be collected from the market and then analysis will be performed at Dairy Laboratory, National Institute of Food Science Technology, University of Agriculture, Faisalabad. Butter: Butter samples of three different brand namely Gourmet, haleeb and Nurpur Dairies will be collected. Three samples from each brand will be collected. Youghurt: Yoghurt samples of three different brands namely Gourmet, haleeb and Nurpur Dairies will be collected. Three samples from each brand will be collected. Cheese: Cheese samples of three different brands namely Adams, Military dairy Factory and Nurpur Dairies will be collected. Three samples from each brand will be collected. Milk Powder: Milk Powder samples of three different brands namely Gourmet, haleeb and Nurpur Dairies will be collected. Three samples from each brand will be collected. UHT milk: UHT milk samples of three different brands namely Gourmet, haleeb and Nurpur Dairies will be collected. Three samples from each brand will be collected. Sampling Procedure: Dairy product samples will be collected in clean sterilized container and put in ice chest, whereas milk powder will be collected in zip polyethylene bag. These samples will be transported for analysis to the Dairy Laboratory, National Institute of Food Science Technology, University of Agriculture, Faisalabad. Sterilization: All glassware like pipette, test tubes, petri dishes, beaker and flasks will be thoroughly cleaned and sterilized in an oven at 180 C for 2 hours. All media and solution will be prepared in distilled water and autoclaved at 121 C at 15 Ib pressure for 15 min using the procedure of AOAC (2000). Physiochemical Test: The samples will be subjected to different physic-chemical test which are detailed as under. Melting Resistance and Melting Quality: Melting Resistance and Melting Quality will be determined by the method as prescribed by Bhadari(2001). Fat: Fat will be determined by using Gerber method as described by the Kirk and sawyer (1991). pH The pH of all the treatments will be determined according to AOAC (2000) method no. 981. 12. Moisture and ash All the treatments will be analyzed for moisture and ash according to their respective methods mentioned in AOAC (2000). Total solids Total solids called percent residues will be determined by drying the sample in hot air oven according to method described in AOAC (2000). Protein: Protein content will be determined by using Kjeldhal method as described by AOAC (2000). Microbiological Test: Dairy products samples will be tested for total plate counts, Coliform counts, Staphyloccus aureus and Yeast and Mould count by the method prescribed by AOAC (2000). Chemicals Adulterants Detection Test: Dairy products samples will be tested for the adulterants namely Formaldehyde, Boric acid, Hydrogen peroxide, Starch, Neutralizers (Sodium carbonate, bicarbonates, Sodium hydroxide by the method prescribed by AOAC (2000). Statistical analysis Results will be analyzed statistically to determine the level of significance (Steel et al., 1997). Literature Cited: Anonymous, (2008). Economic survey of Pakistan. Ministry of finance, economics advisers wing Islamabad. AOAC, (2000). Official Method of Analysis International. 17th edition. Association of office analytical chemists Washington, DC. AOCS, 1990. Official Methods and recommended practices of the American Oil Chemist Society. Atlas, R. M. 2004. Handbook of Microbiology Media 3rd ed. New York. Pp 345-356. Aygun, O. O. Aslantas and S. Oner, 2005. A survey on the microbiological quality of Carra, a traditional Turkish cheese. J. Food Eng 66(3): 401-404. Bandyopadhyay, A. K. and P. K. Ghatak, 2007. Practical Dairy Chemistry. ISBN. 13 Kalyani Publishers, Iyall. book depot. New Delhi, India. PP 25-74. Battu, S. R. B. Singh and B. K. Knag 2004. Contamination of liquid milk and butter with pesticides residues in the Ludhiana Distt. Of Punjab state, India. Ecotoxicology and Environmental Saftey, 59: 324-331. Bhandari, V. 2001. Ice cream manufacture and technology. Tata McGraw Hill pub. co. Ltd. New Delhi. Blake, A. J. , J. R. Powers, L. O. Luedecke and S. Clark 2005. Enhanced lactose cheese milk does not guarantee calcium lactate crystals in finished cheddar cheese. J. Dairy Sci. 88: 2302-2311. Cheesebrough, M. 2002. District laboratory practice in tropical countries. UK. Cambridge Univesity Press. Pp: 382-389. Ernani, L. , M. Lyer, Celestino and H. Roginski 1997. Reconstituted UHT treated milk, effects of raw milk, powder quality and storage condition of UHT milk on its physio-chemical attributes and flavor. Intl. Dairy J. , 7 (2) :129-140. Fleet, G. H. , M. A. Mian 1987. The occurance and growth of yeast in dairy products. J. Food Micro. , 4(2): 145-155. Flint, S. , J. L. Drocourt, K. Walker, B. Stevenson, M. Dwyer, I. Clarke and D. McGill 2006. A rapid, two hour method for the enumeration of total viable bacteria in samples from commercial milk powder and whey protein concentrate powder manufacturing plants. Intl. Dairy J. , 16(4):379-384. Fox, R. J. , A. H. Duthie and S. Wulff 1988. Precision and sensitivity of a test for vegetable fat adulteration of milk fat. Journal of Dairy Science, 71 : 574-581. Garcia, O. , K. Mahmood and T. Hemme 2003. Areview of milk production in Pakistan with Particular emphasis on small scale producer. International Farm Comparision Network FAO, Pp 11-21. Griffiths, M. W. , J. D. Phillips, I. G. West, A. W. M. Sweetsur and D. D. Muir 1988. The quality if skim milk powder produced from raw milk stored at 2 C. Food Microbiology, 5(2) :89-96. Guler, Z. 2007. Level of 24 minerals in local goat milk, its strained yoghurt and salted yoghurt (tuzlu yogurt). Small Ruminant Research, 71 (3): 130-137. Kuo, M. I. , Y. C. Wang, S. Gunasekaran and N. F. Olson 2001. Effect of heat treatments on the meltability of cheeses. J. Dairy Sci. , 84(9): 1937-1943. Leea, j. , H. J. Kima, Y. Yoona, J. Kima, J. S. Hamb, M. W. Byuna, M. Baekc, C. Jod, M. G. Shine 2009. Manufacture of Ice cream with improved microbiology safety by using gamma irradiation. 78 (7-8): 593-595. Lin, T. Y. , C. W. Lind, C. H. Leeb 1999. Conjugated linoleic acid concentration as affected by lactic cultures and added linoleic acid. Food Chem. , 67 (1): 1-5. Little, C. L. , J. R. Rhoades, S. K. Sagoo, J. Harris, M. Greenwood. , V. Mithani, K. Grant and J. McLauchlin 2008. Microbiology quality of retail cheeses made from raw, thermized or pasteurized milk in the UK. Food Micro. , 25 (2):304-312. Malik, A. H. 2008. Dairy sector lacks policy focus. Net, Ed. Daily Dawn, Jan, 28. Mayer. , H. K. 2001. Bitterness in processed cheese caused by an overdose of a apecific emulsifying agent. International Dairy Journal. 4(7): 533-542. Molska, I. , R. Nowosielska and I. Frelik 2003. Changes in microbiological quality of kefir and yoghurt on the Warsaw market in the year 1995-2001. Rocz Panstw Zakl Hig. , 54 (2):145-152. Murtaza, M. A. , M. Din, N. Huma, A. Shabbir, S. Mahmood 2004. Quality evaluation of ice cream prepared with different stabilizers /emulsifier blend. Inter J. Agri Bio. (1): 65-67. Nero, L. A. , M. R. Mattos, V. Beloti, M. F. Barros, D. P. Netto, J. P. Minto, N. J. Andrade, W. P. Silva, Bernadette and D. G. M. Franco 2004. Hazards in non-pasteurized milk on retail sale in Brazil, prevalence of Slmonella spp, Listeria monocytogenes and chemicals residues. Braz. J. Microbiology. , 35 (3) :478-486. Otero, J. L. , M. H ermida and A. Cepeda 1995. Determination of fat, Protein and total solids in cheese by near infrared reflectance spectroscopy. J. AOAC. 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Friday, October 25, 2019

The Reluctant Fundamentalist Essay -- Ethical Issues, Religious Fanati

Fundamentalism is a strict adherence to a set of ideas or beliefs that are conservative in nature. It is a pejorative term usually associated with religious fanaticism. Usually, this is what comes to mind when there is mention of a fundamentalist. However, in Mohsin Hamid's The Reluctant Fundamentalist starring the protagonist Changez, a Pakistani Princetonian who is a top-ranked employee at a prestigious New York valuation firm, turns out not to be an Islamic fundamentalist, but a reluctant fundamentalist of US Capitalism. Hamid challenges readers to reevaluate their preconceived notions and prejudices of people different from themselves in post 9/11 America by employing the use of motifs, aphorism, and suspense, to create a conflation of corporate culture and violence in the form of an allegorical frame story. This story not only proves relevant in historical contexts pertaining to the United States and their involvements in past wars, but also in contemporary settings, as in the current ongoing wars. Simply put, history repeats itself. The story takes place within the span of a day, as Changez approaches an American in the district of Old Anarkali in Lahore, Pakistan. He invites the American to have tea with him, which eventually leads into dinner and continues on into the late evening while he recounts the events of his life which has led up to their fated encounter. The story is told in the second-person narrative, meaning the voice of the American is never heard, but his reactions are implied and guided by Changez. In this way, the audience plays an interactive part in the story, enabling the reader to identify with both parties and make judgements about the outcome of the story. The author constantly plays with the idea... ... by the hand. But why are you reaching into your jacket, sir? I detect a glint of metal. Given that you and I are now bound by a certain shared intimacy, I trust it is the holder of your business cards† (Hamid 184). And with that, the author leaves us with a cliffhanger, for us to determine the ending however we see fit. Hamid has made clear that ideas and truths are all relative, that people should actively search for answers, instead of believing everything they are told. His characters allowed us to exercise our intuitions in search of hidden truths, and mostly to reaquaint ourselves with the elusive, common sense. The aphorism, focus on the fundamentals, is accentuated even further by the suspenseful ending and challenges us to ponder the wisdom of the story, when we consider whether or not the fully-bearded Changez has become another type of fundamentalist.