局部振动对循环系统内分泌激素影响的实验研究

目的 :探讨局部振动对家兔循环系统内分泌激素的影响及其意义。方法 :将家兔随机分为A组 (接振强度 4.9m/s2 )、B组 (接振强度15 .31m/s2 )、C组 (接振强度 2 6.2 6m/s2 )和 1个对照组 ,分别于接振后不同接振前和接振后 10天、2 0天和 30天测定各组家兔血浆内皮素、心钠素及血清血管紧张素Ⅱ的浓度。结果 :随接振时间延长和接振强度增大 ,各组血浆内皮素、心钠素及血清血管紧张素Ⅱ的浓度较接振前和对照组均有增高或显著增高趋势 (P <0 .0 5～ 0 .0 1)。结论 :局部振动可致家兔循环系统内分泌激素浓度的改变 ,这种改变可能与振动性血管损伤发生机制有一定联系。     

小鼠CD^3＋TCRαβ^＋CD^—CD8^—胸腺细胞特性分析

目的：分析CD^3 TCRαβ^ CD^-CD8^-胸腺细胞的特性，推断其在胸腺发育中表型和功能的成熟过程。方法：分离纯化小鼠胸腺DN细胞，用多重染色的方法分析CD^3 TCRαβ^ CD^-CD8^-细胞的表型和TCR库，并与外周淋巴结的相应细胞进行对比。结果：DNA胸腺细胞为异质性细胞，包括CD3^-DN细胞和CD3^ DN细胞，而CD3^ DN细胞又分为CD^3 TCRαβ^ 和CD3^ TCRγδ^ 2个亚群。其中，CD^3 TCRαβ^ DN细胞体积较小，绝大部分细胞对可的松耐受，细胞中能与自身反应的Vβ^3 和Vβ11^ 细胞比例极低，表型较为成熟，与髓质型SP（single positive) 细胞相似。结论：CD^3 TCRαβ^ DN细胞不同于CD^3 TCRαβ^－DN细胞，是一个独特的细胞亚群，只有在经历表型和功能的进一步成熟才能迁出胸腺，移至外周。     

Nursing education and professional role acquisition. A longitudinal study of expectations and attitudes towards nurse role acquisition

This article deals with professional role acquisition in nurses and discusses results from three studies concerning expectations and attitudes towards this acquisition. The studies have been carried out in Sweden. The discussion comprises expressed expectations and attitudes of nurse students and registered nurses in relation to our theoretical perspectives presented in a former article. The theoretical perspectives concentrate on three aspects of social action: change-drama, interchange-ritual, and maintenance-routine. The results indicate that the professional nurse role is acquired according to a traditional pattern, in spite of changes in curriculum and goals of nursing education and health care. Changes made to develop and improve the conditions under which role acquisitions take place.     

98例甲状腺肿块的超声图象分析

本文报告98例经手术及病理证实的甲状腺肿块的B超声像图表现,B超诊断符合率为88.78%。文中就误诊原因及鉴别诊断进行了分析和讨论。     

尿液N-乙酰-β-D-氨基葡萄糖苷酶自动化测定

目的建立用对硝基苯-N-乙酰-β-D-氨基葡萄糖苷自动化测定尿液N-乙酰-β-D-氨基葡萄糖苷酶的方法。方法采用两点终点法,无需做尿样空白,用自动生化分析仪直接测定。结果线性范围0～90U/L,精密度批内CV2.3%,批间CV2.8%,与手工终点法比较,Y(本法)=0.7831X(手工法) 0.5238,r=0.9719。结论该法简便,试剂稳定,适用于尿液NAG活力的自动分析。