优化商品陈列 刷新销售业绩

研究表明：商品陈列面的大小变化、化妆品陈列的高低变化和化妆品的陈列时间等均会影响化妆品店的销售额。首先，商品陈列面的大小变化会引起销售额的变化。如由4个货位减少到2个货位，销售额锐减48％；由3个货位减少到1个货位，销售额锐减68％；由2个货位增加到4个货位，销售额增加40％。所以，在化妆品店的商品陈列中，要加大购买频率较高品种的陈列面，并以大陈列面形成聚焦点，刺激顾客购买。     

血透患者中枸橼酸西地那非的药代动力学及血流动力学变化

患有肾病的男性中ED发病率很高。枸橼酸西地那非是勃起功能障碍的高效治疗药物，严重肾功能不全会使该药清除率下降，但在血透治疗的终末期肾病患者中，该药的药代动力学和血液动力学研究尚未见报导。为了研究血透患者中，该药的药代动力学和血流动力学变化，Grossman EB等人让15例慢性门诊血透维持患者在血透前2h及血透后2h口服单剂西地那非，先服哪一次进行随机分配确定。     

Changes in T .lymphocyte subsets after severe traumatic brain inJury

BACKGROUND： Besides local changes of cranial parenchymal cells, hemorrhage, etc., severe traumatic brain injuries also cause the changes of total body fluid and various functions, and the changes of lymphocytes and T lymphocyte subsets should be paid more attention to. OBJECTIVE： To reveal the changing laws of T lymphocyte subsets after severe traumatic brain injury, and compare with mild to moderate brain injury. DESIGN： A comparative observation. SETTINGS： Department of Neurosurgery, Longgang District Buji People＇s Hospital of Shenzhen City; Central Laboratory of Shenzhen Hospital of Prevention and Cure for Chronic Disease. PARTICIPANTS： All the subjects were selected from the Department of Neurosurgery, Longgang District Buji People＇s Hospital of Shenzhen City from August 2002 to August 2005. Thirty patients with severe brain injury, whose Glasgow coma score （GCS） was ≤ 8 points, were taken as the experimental group, including 21 males and 9 females, aging 16 - 62 years. Meanwhile, 30 patients with mild traumatic brain injury were taken as the control group （GCS ranged 14- 15 points）, including 18 males and 12 females, aging 15 -58 years. All the subjects were in admission at 6 hours after injury, without disease of major organs before injury Informed consents were obtained from all the patients or their relatives. METHODS： （1） The T lymphocytes and the subsets in peripheral blood were detected with immunofluorescent tricolor flow cytometry at l, 3, 7 and 14 days after injury in both groups. （2） The conditions of pulmonary infections were observed at 4 days after injury. The differences of measurement data were compared with the t test. MAIN OUTCOME MEASURES： Changes of T lymphocytes subsets at 1 - 14 days after severe and mild or moderate traumatic injury. RESULTS： Finally, 28 and 25 patients with mild to moderate traumatic brain injury, whereas 25 and 21 patients with severe traumatic brain injury were analyzed at 7 and 14 days respectively, and the missed ones died due to the development of disease. （1） Changes of T lymphocyte subsets： At 1 and 3 days after injury, CD3, CD4, CD8, CD4/CD8 began to decrease, whereas CD8 increased in the experimental group, which were very significantly different from those in the control group （t =2.77 - 3.26, P 〈 0.01）, and began to recover at 7 days, which were significantly different from those in the control group （t = 2.06 - 2.24, P 〈 0.05）, and generally recovered to the normal levels at 14 days （P 〉 0.05）. （2） Conditions of pulmonary infections： At 4 days after injury, the rate of pulmonary infection was significantly different between the experimental group and control group [73% （22/30）, 0, x2=37.29, P 〈 0.01]. CONCLUSION： Patients with severe traumatic brain injury suffer from damages of cellular immune function at early period （within 7 days）, and they are easily to be accompanied by pulmonary infections.     

复合矫治弓丝接头的力学性能及接头组织观察

目的　测试复合矫治弓丝接头的机械性能及分析接头、接头断口变化。方法　测试复合矫治弓丝接头的拉伸强度、剪切强度、扭转强度、弯曲形变残余角,TiNi形状记忆合金丝超弹性,扫描电镜观察及分析接头、断口组织变化。结果　复合矫治弓丝接头抗拉伸强度为32 0～36 0MPa ,剪切强度为2 2 0～2 5 0MPa ,抗扭转强度为30～4 0N·m、断裂时扭转角度不小于1 4 4 0°,弯曲形变残余角为1 2～1 7°;钎焊异质接头中TiNi形状记忆合金丝超弹性几乎没有破坏;接头钎料与TiNi形状记忆合金界面不存在扩散层,与不锈钢丝界面之间有一较宽的扩散层,接头断裂多发生在钎料与TiNi形状记忆合金超弹界面处,部分发生在钎缝中心。结论　复合矫治弓丝机械性能符合正畸临床要求,可应用于临床。     

近10年来我国抗菌天然有机酚酸类化合物的研究进展

 本文介绍了近年来具有抗菌活性的天然酚酸类化合物的研究进展。内容包括具有抗菌活性的中草药酚、酸类抗菌成分，其结构与疗效之间的关系及作用机制的探讨。认为有针对性的从具有清热 解毒作用的传统中草药中寻找活性更好的成分和对活性成分进行结构改造，仍是寻找抗菌药物值得探索的一个方向。     

沙棘叶提取物的适应原活性和安全性评价

在此项研究中用低温（5℃）-缺氧（428mmHg）-抑制模型（C—H—R）评价了沙棘Hippophae rhamnoides L．干叶水提取物对大鼠剂量相关性适应原活性；还用大鼠进行了急性、亚急性毒性实验。     

40例老年急性肾功能衰竭的临床分析

由于老年人肾脏的解剖生理变化导致应变能力的相应下降，易发生急性肾功能衰竭（ARF）。我院自2000年开展血液透析治疗以来，提高了对老年ARF的治愈好转率。笔者收集院1998年1月～2005年1月老年ARF病例40例进行临床分析，报道如下：