Influence of Tangshen formula on endothelial function and hemorheology in diabetic nephropathy rats

ATM: To explore the influence of Tangshen formula (TS) on endothelial function and blood rheology in diabetic nephropathy (DN) rats. METHODS: The DN rat model was established by intravenous injection of low-dose (30 mg/kg) streptozotocin (STZ) after having the high-fat/high-glucose diets for one month. The animals were divi-ded into DN model group, TS group and valsartan group. Fasting blood glucose (FBG), serum total cholesterol (TC), serum triglyceride (TG), renal cortex blood flow and hemorheology were monitored. The content of von Willebrand's factor (vWF) and plasminogen activator inhibitor-1 (PAI-1) in the serum was determined by ELISA. RESULTS: Compared with normal group, FBG,TC,TG, vWF and PAI-1 were increased in DN model group (P<0.05), and no significant difference of FBG was observed. Compared with normal group, plasma viscosity, Casson viscosity, whole blood high/medium/low-shear viscosity, erythrocyte aggregation index, erythrocyte rigidity index and erythrocyte electrophoresis time were increased, and erythrocyte deformation index was decreased in DN model group (P<0.01). Compared with DN model group, plasma viscosity, Casson viscosity, whole blood high/medium/low-shear viscosity, erythrocyte aggregation index, erythrocyte rigidity index and erythrocyte electrophoresis time were decreased (P<0.05), but there was no significant difference for erythrocyte deformation index in TS group. Compared with normal group, the renal cortex microcirculation blood flow in DN model group was significantly decreased. Compared with DN model group, the renal cortex microcirculation blood flow was significantly increased in TS group (P<0.05), and no significant change in valsartan group was found.CONCLUSION: Tangshen formula plays a protective role in the kidney of diabetic rats by improving the blood rheology and endothelial function, thus ameliorating the renal cortex microcirculation blood flow in experimental diabetic rats.     

不同蜂授粉对设施草莓产量和品质的影响

通过比较熊蜂和蜜蜂对大棚栽培草莓的授粉效果试验得出,与蜜蜂相比,熊蜂的出巢时间早,工作时间长,趋光性差,撞棚膜现象发生少,且饲喂简单,饲料投入量少。采用熊蜂授粉的草莓平均产量可达16708.5kg/hm2,比采用蜜蜂授粉的棚增产35.0%;熊蜂授粉草莓单果质量为8.28g,比采用蜜蜂授粉的增加58.6%,差异显著;熊蜂授粉的草莓糖度为11.68%,蜜蜂授粉的草莓糖度为11.29%,差异不显著;熊蜂授粉的草莓畸形果率平均比蜜蜂授粉的低67.9%,差异显著。试验结果进一步说明了熊蜂比蜜蜂更适合用来进行设施草莓授粉。     

钻孔灌注桩施工中岩层漏浆故障处理

本文通过对某大桥钻孔灌注桩施工情况分析。阐述了钻孔灌注桩施工中岩层漏浆故障的原因。同时介绍了几种处理方法。如补浆法、封堵法、内护筒法。     

禽网状内皮组织增生病病毒感染和鸡群的免疫抑制

近几年来，我国鸡群中一些免疫抑制性综合症候，越来越常见。不久前，我们分别在江苏和山东的二个种鸡场遇到了典型的例。虽然二个鸡群对网状的内皮增生病病毒（ＲＥＶ）和鸡贫血病毒都有较高的感染率。但在对鸡群的系统病史、病理剖解变化实验室检查结果做综合分析判断的基础上，确定这二个鸡群的免疫抑制主要是由于整个鸡群在早期感染了网状内皮增生病病毒所致。本文还讨论了造成这种早期感染的可能原因。     

枣树桥接技术

针对枣树特点，通过激素处理、接口保湿、分步放风、冬季保护等措施，丰富和发展了桥接技术，接穗成活率达到９８％以上。该技术同样适用于人为砍伤或牲畜啃坏的枣树。     

牛乳过氧化物酶活性,电导率与隐性乳房炎的关系

对发情盛期、怀孕初期、怀孕中期、怀孕末期的泌乳奶牛的正常乳和隐性乳房炎阳性乳（简称隐乳），测定了其乳过氧化物酶活性及电导率，探讨了乳过氧化物酶活性和电导率的变化与隐性乳房炎的关系。结果表明，不同时期泌乳牛隐乳的乳过氧化物酶活性显著高于同期正常乳汁的酶值（Ｐ＜０．０１）；隐乳的电导率值比正常乳的亦明显升高（Ｐ＜０．０５）     

香花槐容器育苗技术初步研究

2003年春在山西太岳林局进行了香花槐种根容器育苗试验，大棚容器育苗与田间容器育苗对比研究结果表明，大棚育苗明显优于田间育苗，前者种苗的平均高、地径、生根数、主根长分别比后者提高了269．8%，5．91%，84．79％，75．6%。笔者认为，大棚容器育苗是快速培育香花槐优质种苗的有效途径，并就这一技术作了简要介绍。     

宁高公路深层搅拌桩复合地基沉降有限元分析

以宁高公路建设为背景 ,对深层搅拌桩复合地基进行了有限元沉降分析。分析认为 :用有限元方法计算的沉降量与原位观测结论基本一致 ,说明二维有限元计算模型和参数的选择是可行的 ,基本符合实际 ,配合连续监测判断地基稳定 ,为施工正常进行提供了依据。     

关于二重积分的一个计算公式

利用分部积分法给出了关于二重积分的一个计算公式．同时给出了两个有用的推论，并通过具体例题说明其应用。     

谷物培养基上白灵菇菌丝生长研究

本研究以白灵1号为供试菌株,通过对菌丝萌发时间、颜色、密度、均匀度、平均生长速率和生长指数进行比较,探讨7种不同谷物(脱壳与不脱壳)对白灵菇菌丝生长的影响。结果表明,无论脱壳与否,白灵1号在供试的7种谷物培养基上均能生长,但生长情况各不相同,其中最适合白灵菇菌丝生长的是脱壳高粱培养基,长势评分最好,为5分,平均生长速率最大,达5.892 mm·d-1,菌丝生长指数为29.44,其次为不脱壳的小麦和高粱培养基,最不适合白灵菇菌丝生长的是水稻培养基,长势评分为1分,菌丝生长指数为1.75。