核菌

The results show that the primers S37 and S61 are of apparently specific to the amplified bands of six strains, which establishes the basic for the degenerate molacular marker of Cordyceps militeris and confirms heterokaryosis and parasexuality of Cordyceps militeris.

结果表明，引物S37、S61对6个菌株的扩增谱带具有非常明显的特异性，该结果为蛹虫草退化分子标记奠定基础，并且在一定程度上也印证了蛹虫草异核现象和准性生殖理论。

As a result, not only 3-ene isomer of cephem nucleus producing was avoided, but also the cost was reduced.

这样既降低了成本，又避免了碱性反应条件下头孢菌素母核3-烯异构体的生成。

An F plasmid may integrate into the nucleoid of the recipient strain.

F质粒可整合入受体菌的拟核。

Producing PHAs,and then were orientationally inserted into a prokaryotic expression vector pBV220. By analyzing the bioactibity and function of their products, the biological function of phaA, phaB and phaC was confirmed. These have been done in our laboratory. To make better use of the three genes by plant bioreactor, two groups of different plant expression vectors that can be used to produce PHAs in different plants were constructed, and the transformation of PHA in Oxalis triangnlaris has been preliminarily reseached.The following is the main results:Three plant expression vectors pBI121-A,pBI121-B and ubquiting-C, which can be used to be transformed into Oxalis triangularis were respectively constructed by using the phaA, phaB and phaC.

菌株的亚克隆基因组片段中，分离出phaA、phaB和phaC三个基因片段，定向克隆至原核表达载体pBV220，通过对其生物活性与功能分析，确证了基因phaA、phaB和phaC的生物学功能；为了通过植物生物反应器对这三个基因进一步研究利用，本实验利用这三个基因构建了两组可用于不同植物生产PHA的真核表达载体，并对紫叶酢浆草进行PHA基因遗传转化的初步研究，获得主要结果如下：利用克隆的phaA、phaB、phaC三个基因分别构建了可用于转化紫叶酢浆草表达载体pBI121-A、pBI121-B、uBquiting-C；可用于玉米转化的种子特异性表达载体p7S-A、pBI121-S-B、uBquiting-C。

Rifampicin is bright red or dark red crystalline powder, scentless and odourless combined with other anti tuberculosis drugs, in the mean time rifampicin is also a refill of drugs which is drug-resistant to isoniazid or streptomycin.

本品为鲜红色或暗红色结晶性粉末，无臭，无味。利福平为高效广谱抗生素，主要与其他抗结核药合用，用于各种核病重病患者，也可作为对异烟肼和链霉素耐药菌株的替换物。

The primary survival structure of S. sclerotiorum is the sclerotium. A sclerotium is a hard resting structure consisting of a light colored interior portion called a medulla and an exterior black protective covering called the rind. The rind contains melanin pigments which are highly resistant to degradation, while the medulla consists of fungal cells rich in β-glucans and proteins.

三叶草核盘菌的活体结构主要是菌核，菌核是一种坚硬的静态结构，由颜色艳丽的髓质内核和黑色的蛋白质外壳组成，外壳含有对降解具有高度抗性的黑色素，而髓质则由富含β-葡聚糖和蛋白质的真菌细胞组成。

In order to study on the fast,simple and efficacious method of forecast the sclerotinia stem rot.

为了探索预测油菜菌核病发生情况的快速、简单、有效的方法；此研究采用检测被核盘菌子囊孢子感染的油菜花瓣数量来预测预报菌核病可能发生严重度程度，实验采用添加了两种不同pH指示剂的改良型Steadman's培养基在室温下培养在油菜花期(3月下旬～4月中旬)每天采自2块试验田的新鲜花瓣，如果花瓣被病原菌子囊孢子感染，接种培养后培养基颜色发生改变，统计被感染的花瓣数；结果表明：除1天在一块田没有检测到被子囊孢子感染的花瓣外，油菜整个花期都有被感染的花瓣出现，但初花期被感染的花瓣较少，而盛花期和终花期被感染的花瓣较多，第一块田被感染的花瓣数在两种培养基上出现的百分率分别为32.0%和40.2%，第二块田分别为27.3%和35.7%。

An improvement on mass production of apothecia of Sclerotinia sclerotiorum, a causal agent of sclerotinia stem rot of oilseed rape, was achieved by screening suitalbe strains and evaluating factors affecting carpogenic germination for this fungus.

核盘菌引起包括油菜在内的多种经济作物的菌核病。为筛选抗菌核病的作物品种及探讨防治该病的其它途径，获得足够的子囊孢子是极其重要的技术环节。

The rules of photo bioactivities are: Without illumination, the tested xanthene derivatives showed almost the same level of inherent toxicity to the same organism, which showed the inherent toxicity of xanthene derivatives were primarily dependent on the structure of parent molecule. Upon illumination, the photosensitizers showed obvious phototoxicity to all organisms. The xanthene derivatives showed stronger phototoxicity to Gram-positive bacteria. With the increasing number of halogen substituents, the singlet oxygen yields increased and the phototoxic activity increased too.

呫吨类化合物的生物活性的变化规律为：未经光照的条件下，呫吨类化合物的对同种待测微生物的固有生物活性基本相同，说明固有毒性可能主要决定于化合物分子的母核结构，其卤素取代基团对其影响较小；经实验光源照射下，所测MLC值明显低于未经光照条件下的值，表明呫吨类化合物对三种微生物的光敏活性明显强于对其相应的固有活性；呫吨类化合物对革兰氏阳性菌能发挥较大的光敏活性。

Objective; To investigate the effect of Actinobacillus actinomycetemcomitans on periodontitis after incubation the filtrate of ultrasonic pulverization from Aa with polymorphonuclear leukocytes. Methods: Venous blood was drawn from 10 healthy young volunteers.

目的：研究伴放线放线杆菌(actinobacillus actinomycetemcomitans， Aa)可溶性产物对体外培养的多形核白细胞(polymorphonuclear leukocytes， PMNLS)的影响，探讨该菌在牙周炎发病过程中的作用。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐