Alarm bell free essay sample

The   contents   of   this page are very serious which may be shocking to the citizens of UK. Confirmed reports from official government agencies reveal that the younger generation of   UK is losing interest in scientific, engineering and technical education. There is a considerable drop in the number of students in this sector as compared to other academic areas. Presently, only 12 % of the students graduating from the Universities comprise of graduates in science and engineering . This has to be at least 25 % if UK wants to retain its leading position in science and technology. The problems lie at grass root level. The school children of UK are reportedly devoid of   the necessary inspiration which creates an interest in scientific and technical studies. Almost 25 % of secondary ‘A’ level schools do not have a physics teacher !! The Royal society of Chemistry reports that the facilities at the   science laboratories are very poor. Only one-in-five schools offer GSCEs in physics, chemistry and biology, and very few   are opting for science stream at ‘A’ level. We will write a custom essay sample on Alarm bell or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Moreover the curriculum is also designed in   such a way that enough time is not given to scientific studies. The situation is very pathetic because the 200 m pounds allocated for improvement in science education facilities are lying unused !!

The effect of temperature on the permeability of beetroot cells Essay Example

The effect of temperature on the permeability of beetroot cells Essay Example The effect of temperature on the permeability of beetroot cells Essay The effect of temperature on the permeability of beetroot cells Essay Although an apparent trend is illustrated by the experimental data plotted, I am reluctant to formulate a valid conclusion on the effect of temperature on the permeability of beetroot cells due to the variability of the results obtained.  Although five repeats were performed, the data collected is not reliable because of variation within the sets of results. This could have been due to various limitations of the experiment. At 30oC for example, the reading for absorbance of light in arbitrary units, was 0.12%. When compared to the results collected from other repeats at this temperature, this appears to be an unusually high value. Further examples of possible anomalous data were 0.03% at a heat treatment of 40oC together with 0.06% at 50oC. If these anomalous results were not included in the mean absorbance plotted, this could have had a significant effect on the overall conclusion. For example, had the reading at 40oC not been included in the mean, the reading plotted at this temperature of heat treatment may not have been lower than the mean result plotted at 30oC, as is shown on the graph by a slight dip. The size of the range bars causes one to question the reliability of the experimental data. These are especially large at higher temperatures of heat treatment (i.e. 70oC) where the gradient is steepening. At the lower temperatures of 30oC and 40oC, the range bars are overlapping. This means that one cannot be sure whether absorbance of light by the solution at 40oC does indeed decrease when compared to the previous reading. The range bars can be seen to overlap for the remaining temperatures of heat treatment, which means that it is hard to say within the error of the apparatus, what the exact value is. I am reluctant to draw a valid conclusion from the experimental data due to the significantly large percentage range at each temperature of heat treatment. At 60oC for example, the percentage range of the data from each repeat is approximately 300%. The limitations of the experiment lead one to question the precision of the experimental data and the conclusions drawn from them. A mechanised cutter was used to produce pieces of beetroot with the same cross sectional area. It was made certain that we cut downwards so that the bores did not converge. However the beetroot samples were not all of the same length. This could result in the beetroot discs having different surface areas and so causing different volumes of anthocyanin to leak out into the surrounding medium at each repeat of every temperature. This source of inaccuracy would have contributed to the variation and unreliability of the results and could be avoided through a technical improvement in the experimental design. When the discs were impaled on to a mounted needle, a small volume of dye leaked out from the damaged cells. This could not be measured and could have been potential dye lost into the medium, thus affecting the majority of readings for the absorbance of light. To overcome this source of unreliability, the beetroot discs could have undergone heat treatment in a fully permeable bag.  The reliability of the results can be questioned because no accurate method for shaking the solutions before they were poured into cuvettes was employed. The resulting intensities of the solutions could therefore have been incorrect. To avoid this source of inaccuracy a mechanical technique could be used to shake the solutions. The scales of the apparatus employed influenced the results obtained. For both 70oC and 80oC a reading of 2.00% was recorded. This was not the actual absorbance of light by the solutions at these temperatures because the scales of the colorimeters did not exceed 2.00. As a result the mean value plotted was inaccurate, thus any conclusions drawn from the data are unreliable. The experiment should therefore be re-planned using either fewer disks, reducing the time periods the samples of beetroot were left in water for or alternatively leaving the discs in increased volumes of water for 20 minutes. The scale of the colorimeter was only accurate to 0.01%. This may have affected the results at 30oC and 40oC, where there was a 0.01 difference. To overcome this source of imprecision and therefore unreliability the scale of the colorimeter used could be altered to give a reading correct to three decimal place. Although it is not certain whether using different colorimeters would have had any affect on the readings obtained, to ensure precision of the experimental data, the same colorimeter should be used to measure the absorbance of light by the solutions. Although a graduated pipette with 0.1cm3 markings was used to measure 6cm3 of cold tap water, to ensure high precision of the experimental data, apparatus with finer divisions could be used. This would allow a valid conclusion to be drawn from more accurate results.  In order to improve the precision of the experimental data, a digital stop clock could be used. The usage of a manual stop clock meant that there were slight variations in the incubation and staggered timings, and even slight variations in timing would introduce a high percentage area. A one-minute delay in removing the disks from the test tube following heat treatment for example would result in an error of 5%.  Further improvements that would provide considerable additional evidence for the conclusion would be to investigate an increased number of temperatures including a wider range between 50oC and 60oC, as an increased number of intervals would show exactly where the phospholipid bilayer of beetroot melts.

Research esssay on the wire and its interpretation of corrupt Essay

Research esssay on the wire and its interpretation of corrupt institutes throughout the series - Essay Example 1). Throughout the series, it is difficult to precisely pi point down what made characters like Burrell and Rawls who they are. The obvious factor would be their obsession with crime lords and their dysfunctional management formation but this will not be enough. We end up seeing figures like Rawls and Burrell having been transformed by their institutional practices (Alasdair, 2013, p. 1). This leads to them not conforming to the institution while actively reproducing a new culture through their actions. With respect to the above point, Cedric Daniels is definitely one of the most fascinating characters. From the first series we hear of availability of a certain file that has dialed information of corruption allegations in relation to the liquid assets he had acquired during the beginning of his career. This makes it easier for one to label Daniels as a corrupt person and villain in the series. The irony is that he is the only character who refuses to actively keep on reproducing the institutional culture and kind of governance that he purports to be failing (Deleuze, 2002, p. 6). In return, he tries harder to set his own standards with the hope that young officer like Carver can emulate (Alasdair, 2013, p. 1). ... We can observe the same complexity extending to other institutions in the city during the second season. During this season, dockworkers are observed forming an alliance with international syndicates mainly represented by the Greeks. Through the entire series, the Greeks can be deemed to be the most expert people who are often deemed to be mysterious. Towards the dramatic end of season two, one discovers that he is yet to know any names of the Greeks (Alasdair, 2013, p. 1). There is even further speculation that they have links to the FBI and it is disheartening to find out that they are not even Greeks. Corrupt dockworkers like Frank Sobotka conveniently lose some shipping containers so that The Greeks can use them in shipping their drugs and sex workers. Frank and his fellow workers never bother to ask any questions as long as they keep on receiving their cut. To them this is a new source of revenue and a way of supporting their families. Property developers re in bed with politici ans who are determined to own the docks, officer Valchek is seen to be doing what it takes to disrespect dockworkers, this leads to a natural form of alliance between the Greeks and dockworkers (Alasdair, 2013, p. 1). As a result of political greed and police intimidation, these two institutions have naturally and unconditionally pushed the dockworkers towards the lesser evil (Agamben, 2000, p. 13). The viewer cannot help but see Frank actions as not been different to that of the institutions created to protect their interest. Some police officers can be seen trying to do their best for the city of Baltimore by working overtime. Those in position of power like management seem to be doing their best in manipulating authorities to lose some cases.