激素敏感脂酶(HSL)基因敲除小鼠认知行为的研究

目的:评估HSL基因敲除小鼠的学习记忆功能.方法:采用经典的Morris水迷宫实验,测试三种基因型小鼠的认知行为变化.结果:三种基因型小鼠的潜伏期几乎都逐渐缩短,雄性正常小鼠的潜伏期在1～2天,明显地短于HSL敲除小鼠(P<0.01);雌性正常小鼠的潜伏期在第3～5天,明显地短于HSL敲除小鼠(P<0.01),随后几天都无显著差异.第8天撤去平台,小鼠跨越原平台位置的次数无显著差异.结论:HSL敲除的小鼠都存在明显的认知水平功能障碍,雄性小鼠在前期差异显著,雌性小鼠在中期差异显著,但给予适当的学习训练后都能达到正常小鼠的认知水平.     

被动吸烟对小鼠生长性能及部分血液生理指标的影响

研究了被动吸烟对小鼠生长性能及血液系统的影响.将小鼠分为雌、雄对照组和处理组,处理组小鼠进行烟熏处理,对照组常规饲养不做任何处理,120 d后进行生长性能、血常规和血液流变学指标测定.结果显示:接受烟熏120 d后,雌雄小鼠的体质量和体质量增长量均显著低于同性别对照组小鼠(P＜0.01和P＜0.05),且雌性处理组小鼠体质量和体质量增长量极显著低于雄性处理组小鼠(P＜0.01);雌雄性处理组小鼠的红细胞数、血小板数和血红蛋白含量显著高于雌雄性对照组小鼠(P＜0.01和P＜0.05),但白细胞数没有统计学差异;雌雄性处理组小鼠的血浆粘度显著高于对照组小鼠(P＜0.01),但全血粘度没有显著差异.以上结果提示被动吸烟可减缓小鼠的生长,改变小鼠的血常规指标和血浆粘度.     

牛奶乳清液对小鼠学习记忆能力的影响

以昆明小鼠为研究对象,应用小鼠Y型迷宫实验的方法,以环磷酸腺苷(cAMP)为阳性对照,以达标所需训练次数/天数(TN/TD)、正确反应率(CRR)、全天总反应时间(TRT)、主动回避率(AAR)为评价指标,开展不同浓度牛奶乳清液对小鼠学习记忆能力影响的研究。结果表明:阳性对照较空白对照组可显著降低小鼠TN(P0.05),灌胃半个月后可显著降低小鼠TRT并显著提高AAR(P0.05),并且灌胃一个月以后对小鼠CRR有明显升高作用(P0.05);牛奶乳清液较空白对照组可显著降低小鼠TN/TD(P0.05),灌胃半个多月后可显著升高小鼠的CRR和AAR,显著降低小鼠TRT(P0.05);与阳性对照组相比较,牛奶乳清液对小鼠CRR影响不显著(P0.05),但可显著降低小鼠TN/TD,显著升高AAR(P0.05),对于灌胃2个月小鼠的TRT降低效果更好,而且均以3/4倍稀释的牛奶乳清液效果最佳。因此,牛奶乳清液具有一定促进小鼠学习记忆能力的作用。     

P407 诱导和脂肪乳剂建立小鼠高血脂模型的比较研究

摘要: 目的比较P407( 泊洛沙姆) 和脂肪乳剂的小鼠高血脂模型的特点。方法采用灌胃法给予小鼠脂肪乳剂,腹腔注射法给予小鼠P407,之后测血清中的胆固醇( TC) 、甘油三酯( TG) 、高密度脂蛋白( HDL-C) 和低密度脂蛋白( LDL-C) 。结果脂肪乳剂造模后小鼠TC、LDL-C 显著升高,TG 显著降低,HDL-C 的变化没有显著性。P407-1d 组的小鼠TC、TG、LDL-C 显著升高,HDL-C 显著下降,符合临床典型高血脂的特征。结论用P407 建立小鼠高血脂模型更快速,更接近临床高血脂症。     

地西泮和戊巴比妥钠联合使用对小鼠麻醉的效果观察

目的通过给小鼠注射地西泮和戊巴比妥钠的方法,探讨复合麻醉对小鼠的麻醉效果。方法将ICR小鼠随机分为对照组和试验组。对照组小鼠皮下注射生理盐水(0.1mL/10g)和试验组小鼠皮下注射地西泮(1mg/kg)后,分别放入小鼠自主活动箱内,记录小鼠的自主活动次数。然后,两组小鼠均腹腔注射戊巴比妥钠(50mg/kg),记录小鼠翻正反射消失时间和翻正反射恢复时间。结果注射地西泮小鼠自主活动次数显著少于生理盐水组P<0.01)。地西泮和戊巴比妥钠联合麻醉小鼠比戊巴比妥钠单独麻醉小鼠的入睡时间显著缩短P<0.01),睡眠时间显著延长(P<0.01)。结论地西泮和戊巴比妥钠联合麻醉明显提高小鼠的麻醉效果。     

自发性基因突变SCD1-/-小鼠主要脏器参数、血液生理生化指标的观察

目的 探讨SCD1基因缺失对小鼠脏器参数,血液生理生化指标的影响。方法 选取8周龄SCD1-/-小鼠及其杂合子SCD1+/-小鼠,称取体质量及主要脏器,观察其脏器系数。比较不同周龄SCD1-/-小鼠及其杂合子SCD1+/-小鼠的血液细胞学和生化指标,观察其变化特点。结果 8周龄SCD1-/-小鼠与杂合子小鼠比较肝脏系数显著升高(P<0.05)。6～8周龄SCD1-/-小鼠与杂合子小鼠的血液细胞学指标相比RBC、MPV、PCT显著降低(P<0.05),MCV、MCH、RDW、PDW、PLT、LYM显著增高(P<0.05);血清生化指标ALB、TC、TG极显著降低(P<0.01),ALP、ALT、UA极显著增高(P<0.01)。16～18周龄SCD1-/-小鼠与杂合子小鼠的血液细胞学指标MCHC、PLT、PCT相比极显著降低(P<0.01),RDW、HCT、MCV都极显著增高(P<0.01);血清生化指标ALP、TC极显著降低(P<0.01)。结论 SCD1基因缺失对小鼠鼠脏器参数、血液生理生化指标都有一定的影响。     

回力胶囊缓解体力疲劳作用的实验研究

目的通过小鼠游泳试验研究回力胶囊缓解疲劳的作用。方法小鼠负重游泳试验,血清尿素氮、肝糖原、血乳酸测定。结果在连续给予小鼠回力胶囊30 d后,与阴性对照组比较,高、中剂量组小鼠的游泳时间显著延长(P<0.01)、(P<0.05);游泳后高、中剂量组的血乳酸增长显著降低(P<0.05);高剂量组小鼠血清尿素氮含量显著降低(P<0.05);高剂量组小鼠肝糖原含量显著增加(P<0.01)。结论回力胶囊具有缓解体力疲劳的作用。     

金线莲甲醇提取物的降血糖作用

研究金线莲甲醇提取物的降血糖作用及其机制.将正常小鼠和链尿佐菌素(STZ)诱导成功的糖尿病小鼠随机分成5组, 14 d后,分别测定小鼠的肝糖原、血糖、血脂及血清抗氧化指标.结果表明,金线莲甲醇提取物能显著降低糖尿病小鼠的血糖,使小鼠血清中超氧化物歧化酶(SOD)活性升高,丙二醛(MDA)浓度显著下降;能显著降低糖尿病小鼠血清中甘油三酯(TG)、总胆固醇(TC)的浓度,并使小鼠的肝糖原质量比显著增加.金线莲甲醇提取物有降血糖作用,其降糖机制可能与其调节血脂水平、增加外周组织对葡萄糖的利用及提高糖尿病小鼠的抗氧化能力有关.     

突变无毛小鼠F_2代的血液学和血液生化指标测定

目的　突变无毛小鼠是一种新型的基因定位小鼠 ,为了更好的研究该突变基因对小鼠特性的影响。方法采用日本光电血球计数仪、荷兰半自动生化仪对二月龄的F2 代小鼠血液学及血液生化指标进行测定。结果　雌雄无毛小鼠之间的Bun和Ca差异显著 ;稀毛小鼠雌雄之间的WBC、RBC、HCT、GPT、Alb和Mg差异显著 ,其它指标差异不显著。表型之间比较 ,Tbili、Cl、Ca差异显著 ,其它指标差异不显著。结论　突变无毛小鼠F2 代生化指标、代谢产物及电解质表型之间存在差异 ,体现出该突变对其机体的代谢功能有一定的影响。研究结果为进一步说明突变基因的特性提供了参考     

MRL/lpr狼疮小鼠和C57小鼠血常规、主要脏器系数的测定与比较

目的测定C57小鼠与MRL/lpr转基因小鼠在4月龄、5月龄和6月龄的血常规值和脏器系数。方法用MEK-7222K全自动血液分析仪检测C57小鼠与MRL/lpr转基因小鼠血常规值。结果血常规检测方面,C57小鼠与MRL/lpr转基因小鼠相比,中性粒细胞百分率(NE%)、红细胞计数(RBC)、红细胞压积(HCT)、红细胞平均血红蛋白(MCH)、红细胞平均血红蛋白浓度(MCHC)在不同月龄的数值差异极显著(P0.01);其中9个检测比较项目差异不显著(P0.05)。脏器系数方面,C57小鼠的心脏系数、肾脏系数显著高于同月龄的MRL/lpr转基因小鼠(P0.01);MRL/lpr转基因小鼠的肝脏系数显著高于同月龄的C57小鼠(P0.01);其他比较项目差异不显著(P0.05)。结论 C57小鼠与MRL/lpr转基因小鼠在同月龄的部分血常规数据和脏器系数差异显著。     

Markedness and its Interpretation in Language Use

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.     

Features of Women's language

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.     

低渗透非均质砂岩油藏启动压力梯度研究

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。     

On Tragic Consciousness In The Works By Ernest Hemingway

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.     

Achieving Unusual States of Matter Under High Pressure

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-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

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-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

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     

Call for Papers

<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     

Journal of Donghua University ( English Edition) Contents of Volume 31

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Brief Introduction to “Journal of Jilin University( Science Edition) ”

<正>"Journal of Jilin University(Science Edition)"is a comprehensive academic journal in the fields of science sponsored by Jilin University and administrated by the Ministry of Education of the Peoples Republic of China.The journal started publication in 1955.The original name at starting publication was"Journal of Natural Science of Northeast People University",which was changed into"Acta Scientiarum Naturalium Universitatis Jilinensis"in 1958 owing to the name change of the university.The present journal name has