DNA fingerprinting transforms the art of cell authentication.

The increasing diversity of new cell cultures is seriously stretching the capabilities of traditional methods of identification. DNA fingerprinting is set to play an important role in increasing confidence in the authenticity of cultures in research and industry.     

KRW炉冷态装置粒子运动特性的应变测量方法

本文详细阐述了测定KRW炉冷态装置粒子运动特性的应变测量方法,并对该测试原理作了进一步分析,实践表明此种方法简易有效。     

湿砂型球铁件锥形冒口的设计

用缩管法设计球铁铸件冒口时，为了既保证铸件质量，又节约金属，提高工艺出品率，采用了向下逐渐增大冒口直径，即所谓锥形冒口，本文介绍了球铁锥形冒口的设计方法及其需注意的问题，并用Ｃ语言设计编制了计算机程序     

露天矿爆破后煤岩块度分布自动测试系统的模型研究

介绍了采用单图片摄影测量和计算机图像处理的方法．分析露天矿爆破后煤岩块度分布的模型研究原理、过程和结果．     

用钼蓝反应动力学方法作微量磷的分光光度测定

提出用ｄ－葡萄糖试剂做钼蓝反应的还原剂测定磷的动力学方法。用吸光度监测反应速度，用假一级反应的关系式测定了反应速度与磷浓度的线性范围为０．６～２．５μｇ／ｍＬ。用内标法计算五种土壤样品中的含磷量，分析结果与常规方法比较，符合程度令人满意。     

单电极直流电弧炉电热特性理论研究

运用电磁理论与流体静压力原理,导出了电弧自身的电磁向心压缩力以及电弧对熔池冲力的解析式。又运用辐射传热原理,导出了单电极电弧对熔池与炉衬辐射传热的解析式。解析式揭示出电弧自身电磁向心压缩力、电弧对熔池冲力,单电极电弧对熔池以及对炉衬辐射传热的规律。     

Prediction of the structure of a receptor-protein complex using a binary docking method.

To validate procedures of rational drug design, it is important to develop computational methods that predict binding sites between a protein and a ligand molecule. Many small molecules have been tested using such programs, but examination of protein-protein and peptide-protein interactions has been sparse. We were able to test such applications once the structures of both the maltose-binding protein (MBP) and the ligand-binding domain of the aspartate receptor, which binds MBP, became available. Here we predict the binding site of MBP to its receptor using a 'binary docking' technique in which two MBP octapeptide sequences containing mutations that eliminate maltose chemotaxis are independently docked to the receptor. The peptides in the docked solutions superimpose on their original positions in the structure of MBP and allow the formation of an MBP-receptor complex. The consistency of the computational and biological results supports this approach for predicting protein-protein and peptide-protein interactions.     

Targeted disruption of the mouse transforming growth factor-beta 1 gene results in multifocal inflammatory disease.

Transforming growth factor-beta 1 (TGF-beta 1) is a multifunctional growth factor that has profound regulatory effects on many developmental and physiological processes. Disruption of the TGF-beta 1 gene by homologous recombination in murine embryonic stem cells enables mice to be generated that carry the disrupted allele. Animals homozygous for the mutated TGF-beta 1 allele show no gross developmental abnormalities, but about 20 days after birth they succumb to a wasting syndrome accompanied by a multifocal, mixed inflammatory cell response and tissue necrosis, leading to organ failure and death. TGF-beta 1-deficient mice may be valuable models for human immune and inflammatory disorders, including autoimmune diseases, transplant rejection and graft versus host reactions.     

Cauchy主值积分求积公式的收敛性

本文讨论了Cauchy主值积分求积公式的收敛性,并获得了余项的估计式。