cDNA cloning and sequence analysis of genome segments S8 from rice black-streaked dwarf virus

Genome segments S8 of two Chinese isolates of rice black-streaked dwarf virus (RBSDV), one from Zhejiang Province and another from Hebei Province, were amplified by RT-PCR and sequenced. Both segments consisted of 1936 nts in full length (EMBL accession numbers were AJ297431 and AJ297432, respectively) and contained only one big open reading frame which encoded a polypeptide with molecular weight of 68kD. The two Chinese isolates shared 94.0% and 96.5% identity at nucleotide and amino acid level, respectively. They shared 94.5-94.9% and 92.5-92.9% homology with S8 of RBSDV Japanese isolate at nucleotide and amino acid level, respectively; shared 85.1-87.6% and 91.7-91.9% homology with S7 of Italian MRDV (maize rough dwarf virus).     

Krankenanstalten; Arbeits- und Sozialrecht; Gesetzgebungskompetenz

Der Landesgesetzgeber vermag seine Gesetzgebungskompetenz betreffend die angefochtene Bestimmung arbeits- und dienstrechtlichen Inhalts angesichts dieser Komplexit?t weder auf den Kompetenztatbestand des Art 12 Abs 1 Z 1 B-VG "Heil- und Pflegeanstalten", noch auf die Kompetenznorm des Art 21 Abs 1 B-VG zu stützen.     

沙蜥属13种蜥蜴基于16S rRNA序列的系统发生关系

通过比较13种鬣蜥科沙蜥属蜥蜴的16S rRNA部分序列，并以同科的长鬣蜥属长鬣蜥为外群构建NJ树、ML树和MP树，以探讨该属13种蜥蜴的系统发生关系．PAUP分析结果显示这13种沙蜥分成两个类群，呈并系关系，并且NJ树的结果与ML树和MP树划分结果不同．而MEGA结果支持基于形态学、生态环境和核型分析对该13种的沙蜥的划分，同时NJ树中的13种沙蜥属单系群、     

试说"-V/V"式

本考察了“-V／V”式的各个构成成分的句法和语义特点;探讨了该句式在语法分布上的特点,即该句式一般只出现于肯定句和表示肯定的反问句中而不出现于否定句中;研究了该句式在语用表达上的作用,着力解释了动词后成分所具有的超乎寻常性及其形成的原因。     

论《屈赋》中的几种动宾关系

:《屈赋》中除支配与被支配以外的几种动宾关系 ,即通常所说的使动、意动、处动、为动、对动、被动等 ,是古汉语中常见的一些语法现象 ,熟练地掌握和运用它 ,阅读古籍中遇到的许多疑难便能迎刃而解     

与时俱进,积极探索干部考核工作的新思路、新做法

我院在干部考核工作中大胆引入新思路，进行新探索，确定了理论考试、述职量化打分、评议量化打分、党委集体决定的“四段式”考核办法，并根据考核结果调整任用了干部，收到了良好效果。     

Fractions as the Coordination of Multiplicatively Related Quantities: A Cross-Sectional Study of Children's Thinking

Although equal sharing problems appear to support the development of fractions as multiplicative structures, very little work has examined how children's informal solutions reflect this possibility. The primary goal of this study was to analyze children's coordination of two quantities (number of people sharing and number of things being shared) in their solutions to equal sharing problems and to see to what extent this coordination was multiplicative. A secondary goal was to document children's solutions for equal sharing problems in which the quantities had a common factor (other than 1). Data consisted of problem-solving interviews with students in 1st, 3rd, 4th, and 5th grades (n=112). We found two major categories of strategies: (a) Parts Quantities strategies and (b) Ratio Quantities strategies. Parts quantities involved children's partitions of continuous units expressed in terms of the number of pieces that would be created. Ratio quantities involved children's creation of associated sets of discrete quantities. Within these strategies, children drew upon a range of relationships among fractions, ratio, multiplication, and division to mentally or physically manipulate quantities of sharers and things to produce exhaustive and equal partitions of the items. Additionally, we observed that problems that included number combinations with common factors elicited a wider range of whole-number knowledge and operations in children's strategies and therefore appeared to support richer interconnections than problems with relatively prime or more basic number combinations.     

单片机A/D转换接口的两种实现方法

本文论述了用V/F变换器和VCO压控振荡器与单片机接口进行A/D转换的方法,并给出了硬件电路和转换程序.这种方法简化了硬件结构,提高了A/D转换精度,有较强的实用性.     

如何提升人员选拔、安置与培训的质量——卡特尔16PF人格测评在人力资源管理中应用

探讨卡特尔16种人格测评在人员选拔、安置和培训中的应用。16PF在人力资源管理中可以用于人才选拔、人员安置和员工培训等方面的工作。16PF在人才选拔和安置中的应用主要是利用其比较完整的人格测评功能帮助企业挑选和安置适合某个行业、岗位的人员。应用的主要思路是将个体或者团体的测验结果和相应的标准进行对照或比较,筛选出在招聘中人格各个方面达到相应要求或者具备胜任潜力的应聘者,并把他们安置到合适的岗位上,而建立与行业、职业、甚至岗位相适应的16PF人格特质模型是关键所在。     

汽车电气系统采用高电压供电方案的可行性论证

介绍了汽车使用42V电源供电的优点和发展趋势,分析了汽车42V电源的电气系统的结构特点,并提出了采用高电压供电的两种解决方案。虽然汽车业完全采用和实现42V电源技术会遇到许多困难,但是汽车电源技术由传统的14V标准向42V转化已经成为汽车工业发展的必然趋势。