琼脂凝胶双向扩散法模拟尿石形成及影响因素的研究

采用双扩散法研究了琼脂凝胶介质的尿酸体系中环状及分形结构的产生,并考察了影响环生长的有关因素.结果表明:金属离子的种类影响环的个数;离子的浓度影响环的宽度;葡萄糖可调控Liesegang环的形成;而1,2-双(邻氨基苯氧基)乙烷-N,N-N',N'-四乙酸(2-BAPTA)则对环的形成有明显的抑制作用.     

Potentiating effect of aldosterone on the diuretic action of atrial extract

Summary The typical stimulatory effect of a rat heart atrial extract on urinary water, sodium, potassium and kallikrein excretion is significantly increased by a previous administration of aldosterone (0.5 g/100 g b. wt) in the rat.     

体外冲击波治疗复杂性上尿路结石

本文报告采用 ESWL 治疗复杂性上尿路结石57例的结果,全部碎石成功,无严重并发症发生。笔者在讨论中对采用体外冲击波碎石术治疗复杂性上尿路结石进行评价,并着重讨论其碎石治疗的原则以及输尿管石街的处理。     

平台石墨炉原子吸收法直接测定尿中铬

探讨了应用石墨炉原子吸收法测定尿中铬的方法。采用氯化钯作基体改进剂 ,有效地消除了尿基体对测定的干扰。本法检测限 0 .72 μg/L ,标准曲线线性范围 0 - 12 0μg/L,平均回收率 10 2 % ,精密度 5.75% ,方法指标符合“生物材料分析方法的研制准则”[1 ]     

Dynamics of excretion of urinary chemosignals in the house mouse (Mus musclus) during the natural estrous cycle

Summary The volatile fraction of urinary metabolites was investigated chromatographically at five different stages of the natural estrous cycle. A very substantial endocrine dependency has been noted for 11 compounds: 4 ketones, 2 acetate esters, 3 dihydrofuran isomers, dehydro-exo-brevicomin, and 2,5-dimethylpyrazine. The compounds were structurally verified through combined gas chromatography/mass spectrometry.     

舒洛地特治疗早期糖尿病肾病白蛋白尿

目的观察舒洛地特治疗早期糖尿病肾病(DN)的白蛋白尿临床疗效。方法收集早期糖尿病患者65例,随机分成2组,对照组30例,治疗组35例。2组疗程均为8周。对照组,口服氯沙坦片50m g/d,4周。治疗组在常规治疗基础上(氯沙坦钾片50mg,1次/d)加舒洛地特给予600LSU,qd,iv,1次/d,连续2周后,改为舒洛地特片200 mg/d使用6周(共8周)。结果24 h尿蛋白定量均较治疗前明显降低(P<0.05或P<0.01),联合治疗组降低优于对照组。结论舒洛地特能有效改善早期糖尿病肾病白蛋白尿。     

围产期奶牛饲喂阴离子盐对血液钙磷浓度、尿液pH值、产奶量及产后健康状况的影响

选择15头中国荷斯坦经产奶牛按配对试验设计研究了在围产期（产前3周至分娩）饲喂阴离子盐添加剂对奶牛血液钙磷离子浓度、尿液pH值、产奶量及产后健康状况的影响。试验处理为添加阴离子盐的试验1组（50g／d）、试验2组（100g／d）和对照组（0g／d）。结果表明：阴离子盐饲粮显著提高了奶牛产前产后的血清钙离子浓度（P〈0．05），但两试验组之间差异不显著；对血磷浓度影响不显著，血钙与血磷间互作效应不显著（P〉0．05）。试验组尿液pH值显著降低（P〈0．05），试验1组pH约降低了0．6，试验2组pH约降低了1．0，但两试验组之间差异不显著（P〉0．05）；对产奶量没有显著影响（P〉0．05）。对产后疾病的预防效果比较明显，胎衣不下率试验1组降低了20％，试验2组降低了40％；产后瘫痪发病率试验1组降低了40％，试验2组降低了60％；乳房水肿发病率试验1组降低20％，试验2组降低了20％。围产期奶牛饲喂阴离子盐能够显著提高血钙浓度，降低尿液pH值和有效预防产后代谢疾病，对产奶量影响不显著。     

Silicon dots films deposited by spin-coating as a generated carrier addition layer of third generation photovoltaics

In this work, silicon ink composing of silicon powder and zinc oxide solution was formulated and spin-coated on quartz and n/p-Si substrates followed by drying the films under atmosphere at the temperature of 550°C. The results showed that this top-addition layer could be the highly promising layer for photo-generating carriers in third-generation photovoltaics to enhance blue-light absorption. X-ray diffraction and scanning electron microscopy techniques were used to study the presence of silic...