Improved Non-Sieving Quadratic Sieve

In this paper, we give about prime numbers and Blum two theorems and one guess integers.We prove the two theorems about Blum integers.Combining the guess with the primitive non-sieving quadratic sieve,we proposed a improved non-sieving quadratic sieve（INQS）.In INQS,we not only reduce the times of squares and modulo n, but also imply another important conclusion,that is,we don＇t need to find the greatest common divisor of two integers as we do in PNQS.By some examples,we compare it with the primitive non-sieving quadratic sieve（PNQS）. It＇s faster to factor a integer by using improved non-sieving quadratic sieve than the primitive one.     

Towards genetic genome projects: genomic library screening and gene-targeting vector construction in a single step.

We have developed technologies that simplify genomic library construction and screening, substantially reducing both the time and the cost associated with traditional library screening methods and facilitating the generation of gene-targeting constructs. By taking advantage of homologous recombination in Escherichia coli, we were able to use as little as 80 bp of total sequence homology to screen for a specific gene from a genomic library in plasmid or phage form. This method, called recombination cloning (REC), takes only a few days instead of the several weeks required for traditional plaque-lift methods. In addition, because every clone in the mouse genomic library we have constructed has a negative selection marker adjacent to the genomic insert, REC screening can generate gene-targeting vectors in one step, from library screening to finished construct. Conditional targeting constructs can be generated easily with minimal additional manipulation.     

叶子花色素的提取及稳定性研究

对叶子花色素的理化性质进行详细的研究，结果表明该色素溶解性好，耐热性尚好，还原剂、食品添加剂、金属离子（除Al^3 ,Fe^3 ）对色素无不良影响。     

最优状态编码研究

探讨了状态机电路最优状态编码的问题。研究了状态编码的成本及寄存器最优、组合逻辑最优之间的关系，介绍了3种常用的编码方法。通过实验分析差异。     

线性算子方程求解方法

本文在可分的Hilber空间中给出连续线性算子方程Au-f解存在的充要条件及最小范数解表达式，由此给出了近似求解方法，且利用此方法给出了算例。     

面向对象技术在通用查询界面设计中的应用

本文介绍了面向对象技术在开发重性软件的优点，并详细介绍了一个通用的查询界面类－－Chaxun的设计过程及如何将它应用到具体的MIS系统中的方法。     

AB环量子点结构的电子输运

用格林函数方法研究了嵌在介绍AB环一臂中量子点的电子输运性质，数值计算表明：沿着每一共振峰，其输运相位连续的增加π，在两共振峰间的某个位置，其输运相位突然减小π，从而每一共振峰具有相同的相行为，理论结果与实验观测较好的相符。     

食管癌切除术后心律失常的分析治疗

对452例食管癌切除术后并发心律失常的69例病人的发病原因及治疗进行了分析.在 69例病人中,窦性心动过速 32例,占 46.4％;房性早搏 9例,占 13.1％;房室交界性早搏4例,占5.8％;室上性心动过速11例,占15.9％;室性早搏8例,占11.6％;房颤4例,占5.8％;室性心动过速1例.     

火力发电厂灰渣场的植物分布

芜湖发电厂灰渣自然定居的植物共30种,隶属于14科29属.主要包括菊科、禾木科等,多为适应性强的草本植物.风播是其繁殖体的主要来源.灰渣场不良的物理性质、极端贫瘠和重金属浓度过高是限制植物定居的主要因素.     

云南河口栽培肉桂的显微鉴别研究

 通过生物显微技术、显微摄影的方法,对照《中华人民共和国药典(一部)》(2000年版),对河口栽培肉桂进行了显微鉴定,证实河口栽培肉桂从显微结构上来看即2000年版(一部)所载肉桂(Cinnamomum cassia Presl).