水稻仙粳杂种四倍体的人工诱导

以一种极端类型粳亚种的二倍体杂种为材料，杂种幼穗的愈伤组织用秋水仙碱处理获得四倍体植株，幼穗在含不同浓度的2，4－D和KT的培养基上愈作组织的诱导率不同，2，4－D为2．0mg/L，KT为1．0mg/L，愈伤组织和诱导率最高，达55．6％，秋水仙碱在500mg／L的浓度加倍效果最高，达40％，同时比较分蘖斯秧苗和萌发种子的诱导率，仍以愈伤组织和加倍效果最好。     

二重网格迭代收敛定理中引理的证明

利用代数方法证明了二重网格迭代收敛定理中的三个引理。     

Crease Resistant Finishing of Silk Fabrics with Silicone-Containing Epoxide A

The optimum technique for silk finishing with a silicone -containing epoxide A is as follows: The silk fabrics is twodipped - two - nipped in a finishing liquid with 6 % (w/w) of the silicone - containing epoxide A, and 0.3 % ofcatalyst with a pick- up of 100% ± 2%, then drying at60℃ for 3.5 min, finally steaming at 110℃ for 7 min.After crease resistant finishing with the silicone-contain-ing epoxide A, silk can greatly improve both the dry andwet resiliencies. The finished fabrics can endure 20 timeshome laundry and still have good wrinkle resistant prop-erties, while other physical properties such as breaking     

信息隐藏于彩色图像的方法

介绍一种如何利用BMP彩色图像实现信息隐藏的方法 ,即位图法。该方法信息隐藏率高 ,隐蔽性好 ,且易于实现     

Advances in the study of helminth mitochondrial genomes and their associated applications

Helminths, including flatworms and roundworms, are abundant organisms that have a variety of life histories. Of these, the genera Schistosoma, Echinococcus, Trichinella are notable parasites of veterinary and medical importance, and cause substantial socio- economic losses throughout China and the rest of the world. Genetic markers in the mitochondrial (mt) genome have proven use- ful for systematic, ecological, evolutionary and population studies, and the growth of mt genomic research has increased in the last two decades. Technological improvements, such as the long-polymerase chain reaction method and high-throughput se- quencing have allowed minute amounts of DNA from single worms, biopsy samples or microscopic organisms to be used for whole mt genome characterization. To facilitate the retrieval, annotation and analyses of mitochondrial features, multiple data- bases and specific software have also been designed and established. This review focuses on current progress, applications and perspectives regarding helminth mt genomics. To date, the complete mt genomes for 93 species of helminths have been sequenced and analyzed. Analyses of the mt genes, including gene content, arrangement, composition and variation have revealed unique features among the helminths when compared with other metazoans. This provides important data concerning their functional and comparative mitochondrial genomics, molecular taxonomy and characterization, population genetics and systematics, and evolu- tionary history. Moreover, mt genome data for parasitic helminths are important for diagnosis, epidemiology and ecology of in- fections. Mitochondrial genome data offer a rich source of markers for the systematics and population genetics of socioeconomi- cally important parasitic helminths of humans and other animals.     

信息产业与证券市场

21世纪是信息技术高速发展的时代，而证券市场作为主要资本市场对促进经济高速发展必然起着重要作用，本文通过阐述信息产业与证券市场的相互影响的关系，揭示了两者之间互相促进、互相支持的内在本质。     

固体酸催化材料的研究进展

综述固体酸催化剂中最重要的三类催化体系一分子筛，杂多酸及层柱材料和固体超强酸的近期研究状况和发展趋势，并对固体催化剂的应用和开发作了一些有意义的回顾和探讨。     

论唐诗“惊人”的诗歌美学追求

"惊人"作为一种自觉的诗歌美学追求贯穿了唐诗创作的始终,但是,这种追求在不同的时期有着不同的时代内涵,初盛唐追求的是刚健的骨力与斐然的辞采相表里,天然壮丽,产生浓烈的的感染力以达到"惊人"的效果,而中晚唐诗人则追求返诸内心作人力深求来耸动天下。从唐代诗歌"惊人"的美学理想与创作实践的嬗变轨迹中显现了唐诗风格的多元化特征。     

浅谈幼儿数概念的形成

幼儿数概念的形成是一个复杂的过程.本文从充分利用各种感官、教幼儿学习数的组成及运用游戏、文学、艺术等形式,论述了帮助幼儿形成数概念的过程、方法.     

图解法在分析化学教学中的应用

本文简要探讨了学生在分析化学学习中容易遇到的问题及学习中容易遇到的问题及学习酸碱滴定时的主要困难，提出了应用图解法解决的具体对策，由测试结果说明采用图解法后收到了明显的教学效果。