环磷酰胺对小鼠血清溶血素产生的抑制作用性别差异研究

就环磷酰胺抑制小鼠血清溶血素的生成是否存在性别差异进行了讨论,并就环磷酰胺对小鼠脾/体重的影响进行了探讨.结果表明,虽然环磷酰胺对小鼠血清溶血素的产生具有显著的抑制作用,但这种抑制作用没有性别差异,并且对小鼠脾/体重也没有显著影响.     

Smad3基因剔除小鼠6月龄的生物学特性研究

选用 6月龄Smad3基因剔除小鼠 ,称重、采血、解剖 ,检测其生理生化、体重、脏器重量及剖检的特性 ,其结果 :纯合型的MCH、CK、Tibil、GOT和LDH L ,及其肾上腺脏器指数差异显著 ;+ -的肾脏重量差异显著。不同基因型之间比较 :WBC、HCT、MCHC、GLU、CHO、ALP、BUN、LDH L和CA ,及其体重、心脏、肝脏、肾脏、胸腺的脏器指数差异显著 ,并且纯合型的WBC、HCT、CK、CRE、GPT、GOT、ALP、BUN、LDH L较野生型和杂合型小鼠高 ,MCHC、GLU、CHO、MG、CA较野生型和杂合型小鼠低 ;杂合型的GOT、野生型的CK、ALP差异显著。 6月龄Smad3基因剔除小鼠的生理生化指标及脏器重量和指数具有一定的特性     

不同日龄Smad3基因剔除小鼠的脏器重量及脏器指数

实验选用不同年龄雌雄小鼠各 2 0只 ,剖检Smad3基因剔除小鼠 ,观察其大体解剖特征 ,测定其体重、脏器重量、脏器指数 ,统计比较结果。其结果是 35日龄Smad3基因剔除纯合型小鼠的体重及各脏器重量均低于其它两种表型 ,而心、肝、脾、胸腺的脏器指数高 ;70日龄Smad3基因剔除纯合型小鼠的体重、肝脏、脾脏、肾脏、卵巢、睾丸和附睾均低于其它两种基因型 ,而脏器指数是肝脏低 ,脾脏和胸腺高 ;Smad3基因剔除纯合型小鼠与野生型小鼠比较 ,具有其独特的特性 ,为该小鼠的应用提供一定的参考。     

一个-3齐次核的Hilbert型积分不等式

通过估算权函数,建立一个核含参数且-3齐次的Hilbert型积分不等式及其等价式,并用复分析方法算出其最佳常数因子,还考虑了逆向的情形及一些特殊结果.       

主成份投影法在油气钻井技术评价中的应用

油气钻井技术的评价对于科学合理地制定我国石油工业科技发展战略具有重要意义。针对油气钻井技术的特点,建立了油气钻井技术评价指标体系。指标权重的确定采用权值因子判断法,该方法计算简单、实用。应用多指标评价的新方法—主成份投影法对14项油气钻井技术进行了评价。应用结果表明,该方法是合理的。     

实验用五指山小型猪正常生理值测定

目的建立中国实验用五指山小型猪正常生理参考值。方法选用24头中国实验用五指山小型猪,雌雄各半,对其体重、体温2、0项血液学指标2、1项血清生化指标、4项心电图指标、尿常规、主要脏器重量和脏器系数进行了测定,并选用同一批动物对其血液学、血清生化、心电图等生理指标进行了为期4个月的连续测定。结果五指山小型猪部分指标如血液学的WBC、LYM%、GRAN%、PCT,血清生化指标如ALP、P、Na、Cl雌雄动物相差显著,其他指标较一致。心电图指标、体重、主要脏器系数雌雄较一致,部分生化指标如GGT等与临床人正常值较接近。动态测定结果提示各项主要指标测定结果较稳定,随着饲养时间的延长,少数血液生化指标如WBC、GOT有一定的改变,但幅度较小。结论初步建立了中国实验用五指山小型猪正常生理参考值,这些生理数据的采集为其进一步开发和应用提供了有益的参考。     

基于激光散射强度测量非织造布面密度的实验研究

应用光技术测量原理研究了非织造布的激光散射强度与面密度的关系,并应用计算机程序控制非织造布激光散射强度测定系统测定和分析了3种加工方法的非织造布试样。结果表明:非织造布面密度与激光散射强度之间存在十分密切的关系,这里所述的方法具有无放射性和易于采用计算机测量的优点,可用于薄型非织造布面密度的测量。     

Effect of KBr on the micellar properties of CTAB

The effect of KBr on the size, shape and microviscosity of CTAB micelles has been investigated by means of laser light scattering (LLS),¹H NMR measurements and fluorescence probe. The data obtained from the various techniques are quantitatively in agreement. The R_h of micelles in 0.01 rnol · L⁻¹ CTAB solution increases from 3.5 nm to 43 nm andR _g increases to 89 nm with addition of KBr salt. In this process, both the microviscosity and molecular weight of micelles M_w have noticeable increases, too. The rod-like micelles are formed at 0.1 rnol · L¹ KBr and the worm-like micelles are formed at above 0.2 rnol · L^-1 KBr.     

Identification of quantitative trait loci affecting tolerance to low phosphorus in rice (Oryza Sativa L.)

Phosphorus (P)-deficiency in rice (Oryza. Sativa. L) may cause yield reductions. This research has been conducted to map quantitative trait loci (QTLs) for tolerance to low phosphorus stress in a doubled haploid (DH) population. By using the linkage map of this population, the QTLs for relative dry weight, relative P content and relative P utilization efficiency have been located. The results indicate that one RFLP marker located on chromosome 6 is closely associated with relative root dry weight, relative shoot dry weight and relative total dry weight, which explain 24.9%, 20.5% and 25.2% of the total phenotypic variations, respectively. Two QTLs affect relative P uptake content, which account for 20.7% of the total phenotypic variations. One micro-effect QTL has been found to be associated with relative P utilization efficiency. It is suggested that the P uptake efficiency is more associated with P efficiency. Among the secondary physiological indices of P uptake efficiency, the root dry weight is more important than others.     

Identification of quantitative trait loci affecting tolerance to low phosphorus in rice (Oryza Sativa L.)

Phosphorus (P)-deficiency in rice (Oryza.Sativa.L) may cause yield reductions.This research has been conducted to map quantitative trait loci (QTLs) for tolerance to low phosphorus stress in a doubled haploid (DH) population.By using the linkage map of this population,the QTLs for relative dry weight,relative P content and relative P utilization efficiency have been located.The results indicate that one RFLP marker located on chromosome 6 is closely associated with relative root dry weight,relative shoot dry weight and relative total dry weight,which explain 24.9%,20.5% and 25.2% of the total phenotypic variations,respectively.Two QTLs affect relative P uptake content,which account for 20.7% of the total phenotypic variations.One micro-effect QTL has been found to be associated with relative P utilization efficiency.It is suggested that the P uptake efficiency is more associated with P efficiency.Among the secondary physiological indices of P uptake efficiency,the root dry weight is more important than others.