Conversion rate

3. Results and Discussion 3.1. Temperature dependence of D.C. Electrical Resistivity The temperature dependence of the D.C. electrical resistivity of all the samples of Co-Cr ferrite system was studied using two probe method in the temperature range of 200-7000C. The resistivity of the prepared samples was calculated using the relation 1. From fig. 1 and 4, it is clear that the resistivity decreases with increasing temperature ensuring the semiconducting nature of the prepared spinel ferrites…

of mortality rates in England (16th to 19th century AD) When researching into to the topic of mortality rates, (Scott et al, 2005) observes that it is very complex to understand the historical patterns of mortality in England and that the ‘demographic parameters of mortality decline are unclear’. Mortality rate can vary when studying various types of geographic settings, different periods of time and on the age and gender allocation of a given population. Scientist uses mortality rates in…

near zero percent interest rates. This is partly due to the globalisation of financial markets and that overseas economies are in no shape whatsoever to withstand higher interest rates. Meanwhile, in recent weeks, it has become increasingly evident that Fed Chair Yellen is keen to avoid her legacy being judged as a disappointment via her inability to raise the federal funds rate. She has duly taken note of the failures of other central banks to raise their policy rates away from zero. As…

Florence Nightingale paved the way for nursing as a respected profession. Although her legacy is debated, indisputably without her, modern nursing would look significantly different. Nightingale felt a calling to serve mankind through the medical profession. Being part of the elite and wealthy social circle, her family did not support her decision. Their hesitance stemmed from the fact that in Victorian England nurses were known to be drunks and engage in immoral behavior (Cohen, 1984).…

Paragraph 1 This paper talks about how the crystal structure of FePO4will change at different ranges of temperatures. FePO4 has a crystal structure which is similar to quartz, which is made up of 2 phases at different temperatures. At low temperature, FePO4 will demonstrate α phase till the transition temperature of 980K before demonstrating the β phase. Space group of α phase FePO4 is said to be P3121, thus suggesting it has a trigonal structure. As for β phase FePO4, the space group will be…

Freezing and crystallization are linked in that both processes involve initial nucleation followed by crystallization. Sonication is thought to enhance both the nucleation rate and rate of crystal growth in a saturated or supercooled medium by producing a large number of nucleation sites in the medium throughout the ultrasonic exposure. Two main theories which explained the mechanism of nucleation are Hickling theory and molecular segregation theory. Among two theories Hickling is most commonly…

Heart Rate This lab experiment was conducted on Daphnias to test the chemical effects on its heart rate. In this experiment we determined the effects of caffeine and alcohol on the small organism. If the Daphnia is submerged in alcohol the heart rate will slow down, as if it’s submerged in caffeine it will speed up. The experiment measured how the stimulant caffeine or alcohol affected the Daphnia. The objective was to see how alcohol and caffeine would affect the Daphnia's heart rate.…

days of complete rest before she could resume her exercise regime. Although she claimed that the injury was not severe, it must be taken seriously as a recurrent knee injury might occur. Also, there may be slight differences in the values of heart rate recorded by the treadmill and her Fitbit…

In this lab, the main question is, what is the ideal ratio of Alka-Seltzer to water that will produce the longest canister flight time? In the first experiment, we asked, what amount of water will produce the longest canister flight time? In the second experiment, the question was, what amount of Alka-Seltzer will produce the longest canister flight time? The main reason this lab was split into two parts was because there can only be one independent variable per lab, therefore, the water and…

The theoretical concepts that underlie the Hot Ice experiment involve a supercooled, supersaturated aqueous solution becoming a solid. When a liquid is cooled beyond its freezing point but remains liquid is known as supercooling or undercooling, and being supersaturated occurs when the solutes in a solution exceed the saturation point. The sodium acetate in a supercooled state will rapidly change into a solid with the addition of physical energy or a nucleation site. During the transformation of…