Saturday, February 15, 2020
Random drug testing at school Research Paper Example | Topics and Well Written Essays - 1750 words
Random drug testing at school - Research Paper Example 827). Based on a study that Ringwalt and colleagues had done in 2005 but reported only in 2008, a substantial proportion of schools in the United States are implementing random drug testing. As early as 2005, author Neil McKeganey has observed that random drug-testing has been not only practiced but also widely-developed not only within the United States but also within the United Kingdom (12). ARGUMENTS IN SUPPORT OF DRUG-TESTING. Based on the work of James-Burdumy and colleagues, random drug-testing at schools is being promoted because it can reduce student substance abuse in three ways (xviii). First, it is a deterrent because if students are sufficiently aware of ongoing random tests, the random tests will lead them to eventually stop using drugs or abusing substances. Second, by detecting substance abuse, mandatory and random drug testing can identify users for appropriate treatment or counseling. Finally or third, the random drug testing can have spillover effects on non-users. Reducing drug use or substance abuse is important because negative consequences can result from drug use such as low academic performance, bad habits and risky sexual behaviors (James-Burdumy and Colleagues xvii). COUNTERARGUMENTS. We use the key arguments revealed by researchers Kern and her colleagues, working for the American Civil Liberties Union and the Drug Policy Alliance, on why some educators are saying no on the issue of random drug testing at schools in the United States. In summary, some educators are reported to be saying no to random drug testing because it is ineffective, costly, other methods are more reliable, and because drug testing can lead to other types of problems. The authors raised 8 points on why some educators are saying no to drug testing (Kern et al. 2). First, they say that drug testing is ineffective anyway. Second, drug testing is costly and there more effective
Sunday, February 2, 2020
What is the role of sonication during protein extraction Assignment
What is the role of sonication during protein extraction - Assignment Example Sonication plays a role in the process of protein extraction. A sonicator, which is an ultrasonic device, helps grind samples that contain the protein. This initiates the sonication process. Sound waves that contain high intensity produced in the process of sonication disrupt cells. This in turn facilitates the extraction of protein from the cells and tissues after breaking open (Emily, 2012, 5). A sonicator consists of two tips of different sizes. The variation in tips creates diversity in the grounding of samples regardless of their amount. Large samples are ground in tubes with wide mouths while smaller samples are ground in eppendorfs. According to the Journal of Theoretical Biology, the process of sonication produces different efficiency levels (Journal of Theoretical Biology, 2012, 76) There is more resistance to the process by cell walls as compared to cell membrane. To tackle this, the samples with cell walls become flash frozen. This facilitates sonication. In conclusion, the process of sonication becomes essential in protein extraction. It is a mechanical method. Complemented by other chemical procedure of protein extraction, sonication allows the cells to break open and protein extracted from them by use of high intensity
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