农药残留函数模型的显著性检验

给出了文献[1]中农药残留函数模型的检验方法，从而完善了文献[1]的方法     

赵修复窄腹细蜂新属种记述(膜翅目:窄腹细蜂科)

庆贺赵修复教授八旬华诞和教学与科研六十年,特描记窄腹细蜂科(Roproniidae)的一个新属种命名为赵修复窄腹细蜂Hsiufuropronia chaoi Yang作为纪念,模式标本保存在北京农业大学昆虫标本馆。     

The electrical conductivity of H_2O at 0.21-4.18 GPa and 20 -350℃

The electrical conductivity of H2O in solid and liquid phases has been measured at 0.21-4.18 GPa and 20-350℃. The results indicate: ( i ) different phases of H2O in solid have different relations between electrical conductivity and temperature and pressure. The conductivity changes continuously with temperature, but discontinuously with the pressure between 2.11 and 2.58 GPa, which corresponds to the transforming pressure between ice (Ⅵ) and ice ( Ⅶ ) ; ( ii ) the con-ductivity of H2O in liquid all increases with temperature and pressure, but there are discontinuities at pressures between 0.57 and 0.9 GPa, and between 2.11 and 2.58 GPa, which are also consistent with the polymorph of ice (ice ( Ⅴ), ice (Ⅵ) and ice ( Ⅶ ) ) . This reflects that H2O in liquid at different pressures has quite different properties of electron chemistry. It is prob-ably the important reason that causes the layers with high electrical conductivity and low velocity in the earth's crust and upper mantle.     

西昆仑造山带变形古应力差值、应变速率估算及结果分析

文章对西昆仑造山带早华力西变形期的古应力差值、应变速率进行了估算，并对估算的结果进行了分析。对透射电镜所拍摄的变形颗粒位错形态照片，采用位错密度、动态重结晶和亚晶粒粒径等方法进行古应力差值的估算，并估算了该期变形的应变速率。古应力差值σ１－σ３＝８０～１５０ＭＰａ，应变速率６×１０－１４～２×１０－１３ｓ－１，为中速应变。初步推算，该期变形作用大约持续了２．１６Ｍａ。     

MSEM增压系统一维非定常流计算模型的改进

对ＭＳＥＭ增压系统一维非定常流数值模拟中影响计算精度的四个主要因素：气阀端、变截面段、质量添加段及计算时间步长进行了分析，并提出了改进措施。计算结果表明，流量误差得到显著减小。     

多效唑对幼年桃树生长发育的影响

多效唑施于土壤中，对雨花露桃的营养生长有明显的抑制作用，但能增加叶绿素含量，促进成花，改变果形指数；在蟠桃上叶面施多效唑对其营养生长和生殖生长影响不明显，但明显地改变果形指数。土壤的最佳处理浓度为０．８ｇ／ｍ＾２。