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1.
以10月龄BALB/C雄性小鼠为实验对象,研究珍珠口服液对衰老指标的影响,结果表明:与对照组相比,珍珠口服液使脑B型单胺氧化酶比活性下降1899%(P<0001);红细胞谷胱甘肽过氧化物酶活性升高1883%(P<0001);心肌脂褐素含量下降2433%(P<001),表明珍珠口服液具有一定的延缓衰老的作用。  相似文献   

2.
本研究的目的在于以分析自我效能的结构为基础,制订自我效能的测量工具。原始问卷依自我效能的理论定义而构造。149名大学生参加了测验。要求被试在6点量表上评定问卷的每一个条目是否适合描述他们自己,“1”代表完全不适合,“6”代表完全适合。被试同时还完成了中国罗特内外控测验、自我差异测验、SCL90抑郁分测验以及Sherer的自我效能问卷。测验结果得到了一个由19个条目构成的单因素结构的自我效能量表,该因素解释总变异的324%,量表平均分为6309,标准差为12645,无显著性性别差异(t=014,P=088)。统计分析还表明:该量表具有较好的内部一致性信度(a=0878)和重测信度(r=0817);和外控倾向呈显著性负相关(r=-0511,P<0001),和实际—理想自我差异、实际—应该自我差异也均有显著性负相关(r=-0420,P<0001;r=-0450,P<0001);和抑郁有显著性负相关(r=-0398,P<0001),有较理想的构想效度;同时,与Sherer的自我效能量表中的一般自我效能相关为06140(P<00001),与其社会自我效能相关为r=05379(P<0  相似文献   

3.
以昆明种小白鼠为实验对象,观察了核黄素合剂对运动训练小鼠体内自由基的保护作用.将小鼠(40 只)随机分成3 组.对照组10 只(普通饲料、正常饮水、自由活动),实验组Ⅰ15 只(普通饲料、正常饮水、运动训练),实验组Ⅱ15 只(普通饲料、正常饮水、运动训练、核黄素合剂).结果表明:实验组Ⅱ小鼠全血、肝脏、肌肉的超氧化物歧化酶(SOD)活力及还原型谷胱甘肽(GSH)含量明显高于实验组Ⅰ(P<0.01);而肝脏、肌肉的脂质过氧化物丙二醛(MDA)含量则明显低于实验组Ⅰ(P< 0.01).提示核黄素合剂具有增强小鼠机体抗氧化酶活力,保护体内自由基的作用.  相似文献   

4.
本文对31例肝癌、30例肝硬化及31例慢性肝炎患者进行了血清载脂蛋白(apo)AI、B_(100)及血脂的检测,并与63例健康成人作比较。结果表明:肝癌、肝硬化及慢性肝炎患者血清总胆固醇(TC)、高密度脂蛋白胆固醇(HDL—C)和apoAI都显著的降低,与健康对照组比较,均有极显著性差异(P<0.001);肝癌及肝硬化患者血清甘油三酯(TG)都呈不同程度的降低(P<0.01和P<0.05);肝硬化患者的血清apoB_(100)也显著的降低(P<0.001)。本文资料提示,在肝脏疾病时检测血脂及apoAI、B_(100)含量,可以了解肝实质损伤的程度。  相似文献   

5.
采用浆膜表面埋植双极引导电极、多道电极同时记录法,测定“催乳保健I号”对绵羊皱胃、小肠、大肠、子宫、输卵管肌电活动的影响。结果表明:“催乳保健I号”对皱胃肌电活动的峰值、峰电频率和电活动时程均有明显的增强作用(P<001);对空肠、回肠、结肠肌电活动的峰电频率和电活动时程也有明显的增强作用(P<001),但对峰电峰值无明显影响(P>005);而对十二指肠肌电活动的峰电峰值、峰电频率和电活动时程均有明显的抑制作用(P<001);对盲肠肌电活动的峰电频率和电活动时程也有明显的抑制作用(P<001),但对峰电峰值无明显影响(P>005);对子宫体肌电活动的峰电峰值、峰电频率有明显抑制作用(P<001),但对电活动时程有明显的增强作用(P<001);对子宫角肌电活动的峰电峰值、峰电频率有明显增强作用,对电活动时程有明显抑制作用(P<001);对输卵管肌电活动的峰电频率、电活动时程(P<001)和峰电峰值(P<005)均有明显增强的作用。“催乳保健I号”对胃肠肌电活动的兴奋作用与M受体有关,对子宫、输卵管肌电活动的兴奋作用与M受体无关。  相似文献   

6.
采用彩色多普勒超声对30例正常人(A组)和36例阻塞性黄疸患者(B组)的门静脉,肝、脾、肾动脉血流动力学进行研究,结果表明:①阻塞性黄疸病人门脉血流速度低于正常人(P<005);②肝、脾、肾动脉阻力指数阻塞性黄疸病人较正常人明显增加(P<001),而门静脉血流量仍在正常范围。进一步证明阻塞性黄疸血流动力学的变化对人体病理生理所造成的影响。  相似文献   

7.
香菇发酵液对小鼠抗衰老及增强免疫功能的评价   总被引:8,自引:0,他引:8  
本文以BALB/C小鼠为对象,研究香菇发酵液对小鼠某些衰老和免疫指标的影响。结果表明:香菇发醇液使脑单胺氧化酶活性下降28.1%(P<0.01);肝脏超氧化歧化酶活性增强10.67%(P<0.05):心肌脂褐素含量降低29.7%(P<0.01).对巨噬细胞吞噬率和吞噬指数分别提高192.9%和108.7%(P<0.01);迟发型过敏反应和溶血素的产生分别增强69.4%和265.3%(P<0.01);对胸腺和脾脏的增重(49.0%,45.7%)亦有极显著影响(P<0.01);以上结果证明,香菇发酵液具有良好的抗衰老和增强免疫力作用,是一种理想的保健食品。  相似文献   

8.
通过检测小鼠脾脏PFC,CD+4/CD+8T淋巴细胞亚群比值、淋巴细胞转化活性及脾细胞产生肿瘤坏死因子(TNF)等免疫指标,观察三普虫草精(SPCS)对环磷酰胺(CY)损伤小鼠免疫功能的影响。发现SPCS在有效剂量范围内单独使用,能促进CY损伤小鼠PFC功能的恢复(P<0.01);使因CY损伤而失调的CD+4/CD+8T淋巴细胞亚群比值得到改善(P<0.05);使降低了的淋巴细胞转化活性得以恢复(P<0.001);能显著促进ConA诱导CY损伤小鼠脾细胞TNFβ的合成与释放(P<0.001)。  相似文献   

9.
不同配合饲料对南方鲇幼鱼鱼体组成的影响   总被引:1,自引:1,他引:0  
采用6种营养组分含量不同的配合饲料对南方鲇(Silurusmeridionalis)幼鱼进行了6周(43d)的摄食—生长实验,测定并比较了实验前后的鱼体组成,分析了饲料组成对鱼体组成的影响.结果发现:鱼体蛋白质含量与饲料蛋白质含量呈显著正相关,直线回归方程为:Y=5806+011X(R=075,P<001);鱼体脂肪含量与饲料的比能值呈显著负相关,直线回归方程为:Y=5634-163X(R=-061,P<001);鱼体灰分含量与饲料脂肪含量(X1)和饲料的蛋白质与碳水化合物的比值(X2)显著相关,多元回归方程为:Y=1562-054X1+050X2(R=065,P<001);鱼体的蛋白质与能量的比值和饲料的蛋白质与碳水化合物的比值显著正相关,直线回归方程为:Y=2614+039X(R=062,P<001);鱼体水分含量和比能值分别与饲料的组成均没有显著的相关性  相似文献   

10.
外源性DNA对小鼠自身DNA的保护作用   总被引:6,自引:0,他引:6  
采用骨髓有核细胞微核率测定法,检测小鼠服用鲤鱼精巢DNA后,60Co-γ射线对小鼠骨髓细胞染色体损伤的严重程度,结果表明,小鼠每天每千克体质量灌胃鲤鱼精巢DNA100mg,连续15d,可使总剂量6Gy的60Co-γ射线致小鼠骨髓有核细胞微核发生率减少47.2%(P<0.001);采用全血UDS测定法,检测小鼠血细胞DNA受紫外线损伤后的修复速度,结果表明,小鼠每天每千克体质量灌胃鲤鱼精巢DNA30mg,连续3个月,其全血UDS增加40.02%(P<0.001).  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

13.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

14.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.  相似文献   

15.
正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-  相似文献   

16.
We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-  相似文献   

17.
正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that  相似文献   

18.
For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the  相似文献   

19.
Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of  相似文献   

20.
<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with  相似文献   

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