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中国医学科学院学报 1984年第6期6卷 425-428页

作者：王菊凝张明中国医学科学院卫生研究所中国医学科学院卫生研究所北京

用km小鼠建立了最终鉴定环境化学物,致变性的遗传易位测定方法,结果表明本实验系统及技术措施是满意的。

关键词：生育力雄鼠小鼠小家鼠精母细胞 TEM 实验动物 km

THE INHIBITORY EFFECT OF DIFFERENT CONCENTRATIONS OF MOXA SMOKE ON CENTRAL NERVOUS SYSTEM IN km MICE

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Journal of Integrative Medicine 2014年第3期 236-237页

作者： Jia Yang Baixiao Zhao Li Han Lei Wang lixing Lao Hongsheng Chang Beijing University of Chinese Medicine

Objective: To observe the effects of different concentrations of moxa smoke on the central nervous system in km ***: Forty km mice(half male and half female) were randomly assigned(n=10/group) to a negative control group(N) or one of three moxa smoke groups(% opacity): L1(low concentration, 0.4%), M1(middle concentration, 2%), H1(high concentration, 15%).Mice in moxa smoke groups were exposed at respective concentrations in a dynamic gas exposure cabinet 200 min a day for 7 *** in the negative control group were in the same cabinet without any *** of general activities, locomotor activities, coordinated movement, sleep duration induced by subthreshold dose of pentobarbital sodium and the sleep rate induced by subthreshold dose of pentobarbital sodium in the mice with different smoke concentrations were ***: Mice in smoke groups had no significant change in general activities, locomotor activities, and coordinated movement compared with negative group(P>0.05); the sleep duration time in smoke groups showed no significant change in contrast with the negative group, but the sleep time in L1 and M1 groups tended to be longer than the negative and H1 *** sleep rate in M1 and L1 groups increased significantly compared withthe negative group(P<0.05).Conclusion: Medium concentration of smoke shows inhibitory effect on central nervous system in mice, but high concentration of smoke shows both inhibitory and stimulating *** findings suggest that moxa smoke may have hypnotic and tranquilizing effects on central nervous system, which varies according to the concentrations of the moxa *** mechanism needs a further study.

关键词： km

350km/h客运专线CRTSⅠ型板式无砟轨道施工关键技术

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铁道工程学报 2009年第5期26卷 28-30,35页

作者：董冲锋中铁八局集团有限公司成都610081

研究目的:武广客运专线武汉综合试验段CRTⅠS型板式无砟轨道,是我国首次整区段铺设的速度350 km/h的板式无砟轨道结构形式。通过对施工测量、轨道板精调、砂浆制备与灌注等关键技术的研究,总结出一套有效适合国情的Ⅰ型板式无砟轨道施... 详细信息

研究目的:武广客运专线武汉综合试验段CRTⅠS型板式无砟轨道,是我国首次整区段铺设的速度350 km/h的板式无砟轨道结构形式。通过对施工测量、轨道板精调、砂浆制备与灌注等关键技术的研究,总结出一套有效适合国情的Ⅰ型板式无砟轨道施工工艺和与之相配套的施工设备,为今后类似工程施工提供借鉴。研究结论:通过试验段的初步动车试验,速度达到351 km/h,试验验证CRTSⅠ型板式无砟轨道施工技术是成功的。采用三角规和小型龙门架对轨道板进行精调速度快、精度高,调整后的轨道板板顶面高程偏差小于1 mm,轨道板中心线与凸形挡台中心线偏差小于1 mm,轨道板与挡台的间隙差小于5 mm,两轨道板的高低和方向平顺性均小于2 mm,该项技术可在CRTSⅠ型板式无砟轨道施工中推广应用。

关键词：时速350 km CRTSⅠ型板无砟轨道施工技术

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我国优秀女子20km竞走运动员后半程竞走技术的运动学研究

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中国体育科技 2007年第4期43卷 53-59,67页

作者：李建臣吴玲敏首都体育学院技术学部北京100088 湖南工程学院湖南湘潭411100

运用三维运动学分析方法,对参加国际田联竞走挑战赛女子20km比赛前8名运动员后半程中一个复步进行解析。结果表明,我国运动员在后半程中,运用的是步长较短,步频较快的技术风格;腾空时间总体上处于犯规时限的下限,膝关节从着地瞬间直至... 详细信息

运用三维运动学分析方法,对参加国际田联竞走挑战赛女子20km比赛前8名运动员后半程中一个复步进行解析。结果表明,我国运动员在后半程中,运用的是步长较短,步频较快的技术风格;腾空时间总体上处于犯规时限的下限,膝关节从着地瞬间直至垂直支撑面保持了可见的伸直状态,但在最后冲刺阶段,膝角出现了模糊伸直过程;身体重心垂直位移、头顶位置上下起伏均高于世界优秀运动员平均水平,这既与踝关节后蹬伸展离地时机偏早、用力动作不充分有关,也与着地瞬间摆动腿前摆后的前伸着地动作不够积极有关。在注意后蹬动作的同时,还应强化摆动腿积极的前摆着地动作。躯干倾角基本处于正常范围之内,但左、右腿蹬伸用力不均衡造成身体重心左、右偏差较大的情况容易导致动作外观不稳定而被判罚技术犯规。我国运动员肩髋扭转角度较小是导致步长相对较短的一个重要成因。

关键词： 20 km 竞走女子优秀运动员运动学技术分析中国

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Study on Acute Toxicity of Purified Protein HAS1 Expression in km Mice

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Agricultural Biotechnology 2019年第4期8卷 69-71页

作者： Guoru XIONG Gengfeng ZHAO Jungang WANG Guilan XING Shuzhen ZHANG Institute of Tropical Bioscience and Biotechnology CATAS/Hainan Academy of Tropical Agricultural ResourceCATAS/Sugarcane Research CenterHaikou 571101China College of Basic Medicine and Life Science Hainan Medical CollegeHaikou 571101China Research Center for Drug Safety Evaluation of Hainan Province Haikou 571101China

[Objectives]The antifungal protein HAS1 newly obtained was evaluated for acute toxicity safety in km mice according to relevant national regulations,so as to eliminate people s concerns about the safety of transgenic plants.[Methods]The acute toxicity of the purified protein HAS1 was observed by intragastric administration of mice,and the poisoning symptoms,poisoning degree,recovery and death were observed.[Results]No abnormal toxicity symptoms were observed in the test group,the vehicle control group and the blank control *** main tissues and organs were not abnormal in gross *** average body weight of each group showed an increasing trend compared with before administration at 1,3,7,11 and 14 d after *** was found that after giving the purified protein HAS1 to km mice at a cumulative dose of 64 mg/kg a day,no obvious toxicity was observed in the acute toxicity test,indicating that the test substance was non-toxic by oral administration.[Conclusions]This study provides a basis for further use of the protein and its coding genes.

关键词： Bacillus subtilis HAS Purified protein HAS1 km mice Toxic reaction

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融入km的企业神经系统的实现

情报科学 2004年第6期22卷 715-719页

作者：陈倩上海大学悉尼工商学院信息管理系上海201800

本文通过对管理信息系统整合模型和知识管理 (km)相关理论的分析 ,提出了基于

关键词：企业神经系统 km 知识管理管理信息系统系统整合

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km型道床夯实机