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Öğe Evaluation of sponging and antipyretic medication to reduce body temperature in febrile children(Blackwell Science, 1997) Aksoylar, S; Aksit, S; Caglayan, S; Yaprak, I; Bakiler, R; Cetin, FTwo hundred and twenty-four children aged 6 months to 5 years, with rectal temperatures greater than or equal to 39 degrees C (104 degrees F), were randomly treated with sponging alone or with medication including a single oral dose of aspirin 15 mg/kg, or paracetamol 15 mg/kg, or ibuprofen 8 mg/kg. Twenty-three children were excluded from the final analysis because they did not complete the study. Demographic characteristics of the patients were found to be comparable in all groups. Rectal temperatures were recorded every 30 min for a 3 h period. During the first 30 min of intervention, sponging was found to be more effective than all of the three medications. After 60 min, the effects of each medication became superior to sponging with tepid water in reducing body temperature. Twenty-three children were excluded from the final analysis because they did not complete the study. Comparing the effect of the three different medications, it was seen that the antipyretic efficacy of aspirin and ibuprofen were significantly more than paracetamol 3 h after intervention (P < 0.05). For the management of fever over 39 degrees C, it is therefore recommended to give children an antipyretic drug, preferably ibuprofen, and at the same time to begin sponging to provide a rapid and sustained antipyresis.Öğe The metal-halogen exchange reaction between ortho-substituted aryl halides and Ph2CuLi center dot LiCN: scope and applicability for coupling reactions(Elsevier Science Sa, 2004) Cetin, F; Senogul, HB; Gezer, S; Astley, D; Astley, STMetal-halogen exchange between Ph2CuLi . LiCN and ortho-substituted aryl iodides or bromides may be used to conveniently afford substituted metallated aryls which can subsequently undergo reaction with electrophiles. (C) 2003 Elsevier B.V. All rights reserved.Öğe Stable spiro-endoperoxides by sunlight-mediated photooxygenation of 1,2-O-alkylidene-5(E)-eno-5,6,8-trideoxy-alpha-D-xylo-oct-1,4-furano-7-uloses(Elsevier Sci Ltd, 2005) Cetin, F; Yenil, N; Yuceer, LSunlight-mediated photooxygenation of 3-O-acetyl and 3-O-methyl derivatives of 1,2-O-alkylidene-5(E)-eno-5,6,8-tride-oxy-alpha-D-xylo-oct-1,4-furano-7-uloses (1 a-e) in carbon tetrachloride solution gave stable 4,7-epidioxy derivatives in 4R (2a-e) and 4S (3a-e) configurations. The presence of an endo alkyl, on the 1,2-O-alkylidene group and its size, resulted in an increase of the yield of the 4S isomers. 3-O-Acetyl derivatives yielded products as a mixture of C-7 anomers, whereas 3-O-methyl derivatives gave pure single stereoisomers. (c) 2005 Elsevier Ltd. All rights reserved.