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ABSTRACTAs academic institutions continue to renovate and remodel existing libraries to include colocated services, it is important to understand how this new environment requires the redefining of traditional library roles and responsibilities. This case study examines how Delaware County Community College redefined reference and research service by transitioning to a triage reference model. This includes how information desk staff and student workers at a single service point determine when to refer users to librarians and how this model has evolved based on specific situations and experiences. 相似文献
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Rita Christopher S. V. Suresh Babu L. Nirmala G. R. Rangaswamy C. P. Narayan K. Taranath Shetty 《Indian journal of clinical biochemistry : IJCB》1999,14(2):198-206
Maple Syrup Urine Disease is an autosomal recessive disorder caused by a deficiency in the activity of the branched-chain
α-ketoacid dehydrogenase complex. This rare disorder represents one of the causes of acute neonatal illness which results
in devastating disturbances of neurological development. On investigation of 1750 infants with neurological impairment for
inborn errors of amino acid metabolism, 4 neonates with classical maple syrup urine disease were detected. These otherwise
normal neonates presented in the first week after birth with seizures, lethargy and refusal of feeds, hypoglycemia and metabolic
acidosis. The plasma and urine concentrations of the branched-chain amino acids were increased and there was ketoaciduria.
Two of these neonates expired before specific treatment could be instituted. Routine biochemical screening of neonates with
acute illness could unearth many cases of this rare inherited metabolic disease. 相似文献
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Physiological characteristics of America's Cup sailors 总被引:2,自引:0,他引:2
Bernardi M Quattrini FM Rodio A Fontana G Madaffari A Brugnoli M Marchetti M 《Journal of sports sciences》2007,25(10):1141-1152
The aim of this study was to assess the physiological profile of America's Cup grinders and mastmen, by measuring energy expenditure during sailing and assessing their aerobic and anaerobic fitness. The study focused on estimating the energy used during grinding activity, by measuring oxygen uptake (VO(2)) during sail setting in real sailing conditions. In the laboratory, using an arm-cranking ergometer, we measured VO(2peak) during an incremental maximal exercise test and total energy expended during the effort and recovery phases of an all-out test that simulated grinding activity, in six grinders and mastmen and ten sailors of the same crew. Total energy used during grinding corresponded to 45% (s = 9) and 51% (s = 5) of that used in the all-out test (234 kJ, s = 21.7) for tacks and gybes, respectively. In both grinding activity and the all-out test, VO(2) increased during and after the effort. The "VO(2) top value" was 53% (s = 8.6), 68% (s = 5.5), and 78% (s = 3.1) of VO(2peak) (4.7 l . min(-1), s = 0.43) in tacks, gybes, and the all-out test, respectively. During fast sequences of grinding activity, the "VO(2) top value" reached 65% (s = 7.1) VO(2peak) in tacks and 91% (s = 3.3) VO(2peak) in gybes. Our results suggest that grinders and mastmen are characterized by a high anaerobic capacity but their performance can be improved by powering aerobic fitness, to increase this energy contribution to all-out efforts and to guarantee fast recovery when grinding activity is repeated with short rest intervals. 相似文献
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Faigenbaum AD Milliken LA Loud RL Burak BT Doherty CL Westcott WL 《Research quarterly for exercise and sport》2002,73(4):416-424
The purpose of this study was to compare the effects of 1 and 2 days per week of strength training on upper body strength, lower body strength, and motor performance ability in children. Twenty-one girls and 34 boys between the ages of 7.1 and 12.3 years volunteered to participate in this study. Participants strength trained either once per week (n = 22) or twice per week (n = 20) for 8 weeks at a community-based youth fitness center. Each training session consisted of a single set of 10-15 repetitions on 12 exercises using child-size weight machines. Thirteen children who did not strength train served as age-matched controls. One repetition maximum (1RM) strength on the chest press and leg press, handgrip strength, long jump, vertical jump, and flexibility were assessed at baseline and posttraining. Only participants who strength trained twice per week made significantly greater gains in 1RM chest press strength, compared to the control group (11.5 and 4.4% respectively, p < .05). Participants who trained once and twice per week made gains in 1RM leg press strength (14.2 and 24.7%, respectively) that were significantly greater than control group gains (2.4%). On average, participants who strength trained once per week achieved 67% of the 1RM strength gains. No significant differences between groups were observed on other outcome measures. These findings support the concept that muscular strength can be improved during the childhood years and favor a training frequency of twice per week for children participating in an introductory strength training program. 相似文献
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