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The effect of temperature acclimation

Sea urchins are typically spiny, globular echinoderms. About 950 species live on the seabed, inhabiting all oceans and depth zones from the intertidal to 5,000 meters.
For studying the effect of temperature acclimation on the metabolic rate of sea urchins, a Ph.D. student fabricated a laboratory “artificial urchin”: she filled a thin-walled table-tennis ball (diameter: 38 mm), with hand wanner reactants, so to produce a slightly-exothermic unifonn reaction (volumetric heat generation: 370 kW/m3, thermal conductivity of products/reactants: 2.28 W/m•K), simulating the urchin metabolism. She then enclosed the ball into a finned shell (material: magnesite), composed by 114 parabolic pin fins (fin length: 52 mm; base diameter: 2.3 mm; fin base considered as flat) attached on a 1.8- mm-thick spherical sleeve. Finally, she placed the “artificial urchin” in a small tank, with seawater calmly flowing around the device (heat transfer coefficient: 2340 W/m2•K). Knowing that the maximum temperature inside the device should never exceed 32.8 °C for not jeopardizing the experiment, but having the possibility to place a thennocouple just in the seawater tank, at which alarm-temperature the setup must be set? State all the assumptions that you consider for the calculations so that all the formulas are properly justified.

Sample Solution

were not viewed as critical indicators of NCLEX-RN achievement (Yin and Burger's, 2003). Sayles (2003) led a review to decide whether a relationship existed between scores on normalized tests and first-endeavor accomplishment on the NCLEX-RN. The normalized tests inspected were the NET and the PreRN test. The NET test was taken by understudies upon admission to the nursing program, while the PreRN test was finished during the last semester of the nursing program, prior to taking the NCLEX-RN. The NET gives an extensive variety of data on the test taker including math and ability to understand and profiling data like learning styles and the level and kinds of stressors of the test taker. Information got included NCLEX-RN results, segment information, ACT and GED scores, program confirmation GPA, by and large nursing GPA and number of RN courses rehashed while signed up for the program. Discoveries from the review uncovered that minority understudies were not as effective on the NCLEX-RN. Different results acquired from the review were that individual (math and perusing) and composite NET scores, notwithstanding composite PreRN assessment scores were all indicators of NCLEX-RN achievement. Further, higher program confirmation and generally nursing school GPAs were found to bring about an improved probability of NCLEX-RN achievement (Sayles, 2003). Seldomridge and DiBartolo (2004) endeavored to distinguish indicators of NCLEX-RN achievement and disappointment at different places in a nursing program. Information were gotten by auditing understudy records and NCLEX-RN report. Autonomous factors included essential nursing affirmations measures factors, total GPA in junior year and number of 'C' grades in senior year. Course grade in Pathophysiology was the just pre-confirmations measures to deliver measurably critical outcomes. These factors anticipated NCLEX-RN achievement 98.7% of the time, and disappointment 5.6%. Understudies who were fruitless on the NCLEX-RN were noted to have two times as many 'C' grades in junior level nursing courses. Be that as it may, the exhaustive leave test, the National League of Nursing Comprehensive Achievement Test for Baccalaureate Students (NLNCATBS) given to seniors was the most reliable generally indicator of NCLEX-RN achievement and disappointment rates. Execution on the NLNCATBS test anticipated NCLEX-RN achievement 94.7% and disappointment 25% of the time. NCLEX-RN disappointment was more hard to foresee and for the most part less precisely anticipated (Seldomridge and DiBartolo, 2004). McGahee (2010) at first inspected nine scholarly factors to decide whether these factors were indicators of first-endeavor NCLEX-RN achievement. Beginning information assortment prompted changes in the projects educational program and affirmation strategy and as personnel noted patterns normal to understudies who were fruitless on the NCLEX-RN. In 2007, changes were additionally made to the review's system. Rather than nine free factors, the review smoothed out the autonomous factors to three. Discoveries of the review demonstrated progress in Pathophysiology, the Theoretical Foundations course and scores on RN Assessment Test were all singular indicators of first-endeavor NCLEX

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