查询词典 biological method

objective the aim of this study is to investigate the expression and the distribution of the nerve growth factor during the period of neural tube development of human embryo.method early development of neural tube was studied in human embryos about 35 gestational days by using immunocytochemical abc technique.result there were ngf immuno-positive substances in the cytoplasm and nuclei of neuroepithelial cells in the ventricular zones of neural tube.in the intermediate zone of neural tube,ngf immunoreactivity was detected in the nuclei of some neurons,or the processes of other neurons which contained no ngf-immunoreactive substances in their nuclei;the expression pattern of ngf in the marginal zone of neural tube was similar to that of the intermediate zone.the density of ngf-immunorecative particles was higher on the rostrum side of neural tube than on the caudal side.the ngf immuno-positive cells were also observed among the somites of embryo under the neural tube.conclusion these results suggest that ngf was an important signal molecule to induce neural tube differentiation,and that ngf may play a significant role in regulation of the biological function of neurons in developing neural tube.

目的 研究捷安肽素的抗真菌作用机理。方法采用形态学方法和同位素标记法。显微形态观察经捷安肽素处理后的供试真菌的形态学变化。进一步采用14c同位素标记的特异底物&尿苷二磷酸-（14c）-葡萄糖&示踪，研究捷安肽素对真菌(1，3)-β-d-葡聚糖合成酶活性反应的影响。结果研究神经生长因子在早期人胚神经管发育过程中的定位表达。方法采用免疫细胞化学 abc法染色，研究35天人胚的发育情况。结果在人胚神经管的室管带中，神经元的细胞质和细胞核ngf免疫反应阳性；在中间带，一部分神经元的细胞核ngf免疫反应阳性，另外一部分神经元的细胞核ngf免疫反应阴性，而其突起ngf免疫反应阳性；在边缘带ngf的表达与中间带相似。在神经管的头侧ngf阳性反应较强，神经管的尾侧ngf阳性反应较弱。结论 ngf在人胚神经管免疫反应阳性，表明ngf可能是诱导神经管分化发育的重要信号分子，提示ngf可能在人胚神经管的发育中具有十分重要的作用。神经生长因子；人胚；神经管；发育

This article had carried on the transformation to the ramee retting wastewater processing project which mainly used the method of "the transformation-biological chemistry" for the polymerization iron sulfate or the polymerization aluminum chloride.

对苎麻脱胶废水处理工程进行了改造，采用了&物化－生物化&组合工艺和企业锅炉烟气对苎麻脱胶废水进行中和处理，以废治废；采用硫酸亚铁、聚合硫酸铁或聚合氯化铝为絮凝脱色剂，去除大量的非溶解性污染物。

A new method for the biological assay of vegetable purgatives based on the numbers of wet faeces excreted by groups of mice after dosing is described.

1本文详述植物性泻药的一种新的生物测定法，此法系用小白鼠在服药后所排出的湿粪数为基础，以定泻药的效价。

Biological technology is the most effective, safe and reasonable method for oil pollutions treatment.

生物法是处理油脂污染物的一种最有效、最安全和最彻底的方法。

Abstract］ objective to investigate anus sphincter preserved surgical method and indication for low rectal cancer.methods 15 cases with low rectal cancer were operated with eversion and pull-through anus preserved colorectal anastomosis through anus.results no patients died of operation,no patients was with fistula and stricture of anastomosis,no defecation incontinence happened after postoperative 20 weeks,only one patient was with local recurrence.following up for 8 months to 5 years,5 cases were with distant metastasis,4 of these died,one of these had lived with liver metastasis for 3 years.conclusion the indication of anus preserved operation should be chosen according to clinical stage and biological characteristic of rectal malignancy; eversion and pull-through anus preserved colorectal anastomosis through anus is a better anus preserved operation for low rectal cancer.

目的 探讨低位直肠癌保留肛门括约肌功能的手术方法和手术适应证。方法对低位直肠癌经腹经肛门直结肠外翻拉出保留肛门吻合术15例。结果全组无手术死亡，未发生吻合口漏和吻合口狭窄，局部复发1例，20周左右恢复正常排便排气功能，无大便失禁病例。随访8个月～5年，5例为远处转移，死亡4例，其中1例肝转移3年仍生存。结论根据直肠癌的临床分期和肿瘤的生物学特性选择保肛手术适应证，经腹、肛门齿线上直肠癌根治性切除，行肛门直结肠外翻拉出吻合是低位直肠癌较好的保肛术式。

The basic knowledge of development trend and the environmental factors, quarantine, prevention and cure period, the relationship between plant communities, and summary of forest prevention and control, quarantine prevention, physical and chemical control and biological control method.is as follows.

基本摸清了该虫发展趋势与环境因子、检疫、防治时期、植物生态群落之间的关系，并总结出营林防治、物理防治、检疫防治、生物防治、化学防治等防治方法。

It was hard to treat and make it reach the national standard for reuse water or discharge water with conventional treatment processes and equipments. Waste water containing hydrolyzed polyacrylamide was treated with gas flotation and the biological touch oxidized method.

用气浮＋生物接触氧化法对孤岛油田含聚污水进行处理，首先利用气浮去除悬浮油和大部分聚合物，然后利用生物接触氧化膜上的烃类降解菌和聚丙烯酰胺降解菌组成的高效降解菌群的生物降解作用去除乳化油和残余的聚合物。

The biological activity of fenoxicarb on tobacco beetle larvae was with dropping method,and the control effect was experimented in laboratory and store house.

采用点滴法测定了&双氧威&对烟草甲幼虫的生物活性，同时进行了室内防治试验和实仓防治试验。

The invention provides a human McAb to tetanus toxin, being a human antibody, which consists of an antibody variable region and an antibody constant region or not, having the ability of neutralizing the tetanus toxin, with the variable region gene and protein sequence indicated as the sequence table 1. The invention is characterized in that the antibody can not induce obvious allergic reaction, has higher titer and longer effect without any animal virus pollution, and can be produced in an unlimited quantity, which also provides the relating biological functions, the testing methods, the manufacturing method and the application.

A 本发明提供一种人源抗破伤风毒素单克隆抗体，其为人源抗体，包括抗体可变区，该抗体包括或不包括抗体的恒定区，该抗体具有中和破伤风毒素的能力，抗体可变区的基因和蛋白质序列如序列表1所示；其具有不会诱发明显的过敏反应，有较高的效价且长效，产品无动物病毒污染，可以无限量地生产；本发明还提供了其生物功能、测定方法、生产制造方法及其应用。

The invention relates to a method for analyzing microbial community structure and composition using single-strand conformation polymorphism technology, which solves the problem that the existing biological assay and analysis methods are difficult to analyze the composition and structure of microbial community.

一种采用单链构象多态性技术分析微生物群落结构组成的方法，它涉及一种分析微生物群落结构组成的方法。它解决了目前现有的生物检测和分析方法难以分析微生物群落的生物组成结构的问题。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。