复性

Characters of genetic diversity are followed Three allozyme loci AAT-3, PGD-1 and PGD-2 are monomorphic. The IDH-1 was silence in S.glauca but it was active in S. itlica and S. virids. Genetic diversity of green foxtail was more than that of most of other annual primary self-pollinated plant. The yellow foxtail was complex.

我国北方青狗尾草遗传多样性特征是：AAT-3、PGD在所有供试种源中均表现单态，金狗尾草与青狗尾草和谷子相比，IDH—1表现沉默，青狗尾草同其它一年生以自花授粉为主的植物相比表现更高的遗传变异性，金狗尾草表现为倍性复合体。

The results showed that the POV of hemp seed oil was affected remarkably by temperature and time, and the effect of temperature was greater than that of time. The TBHQ had good antioxidation ability to hemp seed oil. TBHQ or BHA with isoascorbic acid or critic acid exhibited great antioxidation ability, the synergistic effect on the oil of critic acid was better than that of isoascorbic acid. When 0.02% TBHQ with 0.005% BHA and 0.01% critic acid or with 0.005%BHA and 0.01% isoascorbic acid was used in the oil, the shelf life of the oil could be prolonged from 4 months to 11~13 months at 20℃.

结果表明，温度、时间对汉麻籽油的自氧化过程有显著影响，且温度的影响更明显；叔丁基对苯二酚对汉麻籽油具有较好的抗氧化性能，柠檬酸和异Vc对TBHQ与丁基羟基茴香醚复配的复合抗氧化剂均表现出较强的协同抗氧化性能，且柠檬酸的协同抗氧化性优于异Vc；添加0.02%TBHQ+0.005%BHA+0.01%柠檬酸或0.02%TBHQ+0.005%BHA+0.01%异Vc复合抗氧化剂，可使汉麻籽油在20℃下的预贮藏时间从4个月延长至11~13个月。

The iron transformation , their effects on soil factors and iron availability of compound iron fertilizer (CF,self-made iron fertilizer) and sulphate iron(FeSO 4) in calcareous soil were investigated by using soil incubation method.

通过土培试验的方法，研究了复混铁肥、硫酸亚铁两种肥料在石灰性土壤中的形态转化、对土壤因子的调控作用及在有效性上的差异。

Drug dependence is a chronic, relapsing disease in brain, and compulsive drug-seeking and drug-taking behavior persist despite serious negative consequences, which induces adaptive changes in the central nervous system that lead to tolerance, physical dependence, sensitization, craving, and relapse at last.

药物依赖是一种慢性、复发性脑疾病，主要特点是成瘾者往往存在对依赖药物的强烈渴求，导致他们不顾后果地继续觅药和用药行为。持续的用药行为导致中枢神经系统发生适应性的变化，进而引起耐受、身体依赖、敏感、渴望和复吸。

In this study, we evaluated Cr2O3/CrN duplex coating synthesized by PVD cathodic arc deposition processes for potential applications in molding dies Cr2O3/CrN thin films were controlled at the thickness of 3μm Scanning electron microscopy was used to investigate the cross section and thickness.

本研究中，我们以铝压铸模具材料为基材，并利用阴极电弧沈积(Cathodic arc deposition， CAD)法在试片表面沈积厚度3μm之Cr2O3/CrN超硬复层膜，来评估此制程之膜层对高温铝合金之抗熔损性行为。

In manufacturing reflex reflector injection mould by nickel electroforming technology, the mandrels are mostly made of metallic materials having high mechanical strength and corrosion resistance through precision machining in present.

利用电铸镍工艺制造来复反射器的模具，其芯模多采用高机械强度及高耐蚀性的金属材料经过精密机械加工制成。

Methods A retrospective analysis on clinical manifestation, diagnosis and treament to 19 patients with reexpansion pulmonary edema who received thoracal closed drainage.

回顾性分析19例胸腔闭式引流术后复张性肺水肿患者的临床表现、诊断和治疗方法。

Reexpansion pulmonary edema; Thoracal closed drainage; Respiratory function

复张性肺水肿；胸腔闭式引流术；呼吸功能

Objective: Purpose to investigate the different in vitro function of targetable non-viral vector containing poly-L-lysine or protamine.

DNA-多聚阳离子-配体形成的复合体可以通过受体介导的内吞作用将目的基因靶向性导入含相应配体的细胞中［1］。

Methods: Using GV1 and GV2 targetable non-viral vectors, the influences of the poly-L-lysine and protamine on in vitro gene transfer efficiency and the course of gene expression were observed. Results:β-galactosidase was expressed at intermediate level (50%) in A375 cells using a complex containing either protamine or poly-L-lysine.

目前，大部分受体介导的靶向性非病毒载体都利用多聚赖氨酸作为骨架分子来包裹DNA形成复合体，并在实验室研究中取得了较好结果，但由于多聚赖氨酸的临床安全性未知，难以应用于临床研究。

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