富硒乳酸菌抗肝损伤小鼠红细胞脂质过氧化作用

选择60只健康雌雄对半成年小鼠，随机分成对照组(C组)，富硒乳酸菌组(Se组)，CCl4-富硒乳酸菌组(CCl4-Se)，CCl4注射组(CCl4组)，通过腹腔注射CCl4诱发肝损伤，分别在第2、4、6周采集血样并测定红细胞溶血液中GSH-Px、GST和SOD活性及MDA含量．研究富硒乳酸菌对CCl4诱发肝损伤小鼠红细胞脂质过氧化损伤的保护作用．结果显示，在整个实验期内，SOD各组间未见明显差异；GST表现为Se组最高，呈上升趋势，且在第6周高于或明显高于其他符组，CCl4组低于或明显低于C组和CCl4-Se组，C组和CCl4-Se组相近；C组、Se组和CCl4-Se组GSH—Px活性无明显差异，而CCl4组随负荷时间呈下降趋势，第4周后明显低于其余三组．C组和CCl4-Se组的MDA无明显差异，Se组整体水平低于或明显低于其它三组，CCl4组高于或显著高于其它三组．提示CCl4诱发肝损伤小鼠红细胞脂质过氧化变化剧烈，富硒乳酸菌制剂能通过抗损伤保护以及增强抗氧化酶活性发挥有效作用．     

硒对新城疫免疫雏鸡红细胞免疫功能的影响

采用鸡红细胞免疫复合物RBC-IC花环、鸡红细胞受体（RBC-CR1）花环及RBC-CR1花环促进试验,通过饮水给硒的方式,探讨硒对新城疫免疫雏鸡红细胞免疫粘附功能及其免疫粘附促进因子活性的影响。试验结果表明：各组平均血清硒含量变化与给硒剂量一致;各试验组红细胞免疫粘附功能及其血清中的免疫粘附促进因子的活性均较对照组为高。     

富硒乳酸菌抑制镉诱发小鼠血浆NO和TNF-α释放作用

选择48只健康成年雄性小鼠,随机分为对照组(C组)、镉暴露组(Cd组)、镉 低剂量富硒乳酸菌组(Cd-LSe组)、镉 高剂量富硒乳酸菌组(Cd—HSe组)．腹腔注射CdCl2进行镉暴露实验,连续6d．研究富硒乳酸菌对镉暴露小鼠血浆肿瘤坏死因子-α(TNF-α)、一氧化氮(NO)水平及一氧化氮合酶(NOS)活性的影响．结果显示,镉染毒暴露第6d,Cd组血浆NO含量明显高于C组,Cd-LSe和Cd—HSe组与C组无明显差异,低于Cd组;Cd组NOS活性高于C、Cd—LSe和Cd-HSe组;Cd-LSe和Cd-HSe组NOS活性与C组无显著差异性;Cd组iNOS活性明显高于C、Cd-LSe和Cd-HSe组,Cd—LSe和Cd-HSe组iNOS活性与C组无显著差异;Cd组血浆TNF-α升高．而Cd—LSe和Cd-HSe组未见升高,且低于于C组．提示富硒乳酸菌在有效缓解镉诱导血浆iNOS活性上升,NO、TNF-α释放增加介导损伤过程中可能起重要作用．     

镉染毒对大鼠血液红细胞免疫功能的影响

分别选择健康SD雄性成年大鼠60只和36只进行慢性和急性镉染毒实验,均随机分成对照组(C组)、中剂量染毒组(M组)、高剂量染毒组(H组).慢性实验采用每天分别给C组、M组、H组饲喂含镉0、5、10mg/kg饲料的大鼠全价饲料,连续6周;急性实验分别按含镉0、0.5、1.0mg/kg体重腹腔注射染毒,连续7d.研究了镉染毒对大鼠血液红细胞免疫功能的影响.结果显示,经慢性染毒大鼠体重与对照组相比无明显差异,但急性染毒差异显著;慢性实验M和H组大鼠的RBC CR1花环率(%)从第2周起均显著低于C组,RBC-IC花环率(%)在第2～4周高于C组,且在第4周M组显著高于C组,以后M和H组均极显著低于C组;急性实验M和H组大鼠的RBC CR1花环率(%)和RBC IC花环率(%)与对照组比较均显著降低.提示镉染毒引起血液红细胞免疫功能低下.     

藏药波棱瓜子总木脂素对四氯化碳（CCl4）致化学性肝损伤小鼠保护作用

研究了藏药波棱瓜子总木脂素对CCl4致小鼠化学性肝损伤的保护作用.通过建立四氯化碳诱导小鼠肝损伤模型,以测定不同剂量的波棱瓜子总木脂素对各组小鼠碱性磷酸酶(ALP)、天门冬氨酸氨基转移酶(AST)、血清丙氨酸氨基转移酶(ALT)、脏器系数、肝组织匀浆中超氧化物歧化酶(SOD)、丙二醛(MDA)、谷胱甘肽过氧化物酶(GSH-Px)等生化指标活力或水平的影响;以HE染色对肝组织进行组织病理学检查.实验结果表明波棱瓜子总木脂素可以降低CCl4所致化学性肝损伤小鼠肝脏系数及血清ALT、AST、ALP活力,增强SOD和GSH-Px活性,减少肝组织匀浆中MDA的含量,表现出对肝脏的保护和良好的抗氧化作用.故波棱瓜子总木脂素对CCl4致小鼠化学性肝损伤具有一定的保护作用.     

藏药波棱瓜子总木脂素对四氯化碳(CCl_4)致化学性肝损伤小鼠保护作用

研究了藏药波棱瓜子总木脂素对CCl4致小鼠化学性肝损伤的保护作用.通过建立四氯化碳诱导小鼠肝损伤模型,以测定不同剂量的波棱瓜子总木脂素对各组小鼠碱性磷酸酶(ALP)、天门冬氨酸氨基转移酶(AST)、血清丙氨酸氨基转移酶(ALT)、脏器系数、肝组织匀浆中超氧化物歧化酶(SOD)、丙二醛(MDA)、谷胱甘肽过氧化物酶(GSH-Px)等生化指标活力或水平的影响;以HE染色对肝组织进行组织病理学检查.实验结果表明波棱瓜子总木脂素可以降低CCl4所致化学性肝损伤小鼠肝脏系数及血清ALT、AST、ALP活力,增强SOD和GSH-Px活性,减少肝组织匀浆中MDA的含量,表现出对肝脏的保护和良好的抗氧化作用.故波棱瓜子总木脂素对CCl4致小鼠化学性肝损伤具有一定的保护作用.     

富硒大球盖菇抗氧化能力研究

对大球盖菇(Stropharia rugoso-annulata)进行液体富硒培养,结果表明,培养基中硒添加浓度为150μg/mL时,菌丝体生物量达0.811g/100mL,富硒量为4727.68μg/g,富硒率达24.68%,有机化程度为96.27%。与对照组、无机硒(Na2SeO3)组、大球盖菇菌粉液组相比,富硒大球盖菇菌粉液组小鼠全血谷胱甘肽过氧化物酶(Glutathione peroxidsade,GSH-Px)活性和超氧化物歧化酶(Superoxide dismutase,SOD)活性明显增加,丙二醛(Malondialdehyde,MDA)含量明显减少,结果表明富硒大球盖菇具有较强的抗氧化能力。     

黄芪注射液对四氯化碳损伤小鼠肝的保护作用

观察黄芪注射液(HQI)对四氯化碳(CCl4)所致肝损伤的保护作用.采用CCl4所致肝损伤模型,并测定功能,肝组织学检查及肝组织匀浆脂质过氧化.结果为,CCl4模型组小鼠血清GPT为(945.7±146.1)U/100mL,显著高于正常对照组(P＜0.01).HQI低、高剂量组的血清GPT分别为(576.3±97.4)U/100mL和(518.6±78.8)U/100mL,均显著低于模型组(P＜0.01).HQI治疗组肝组织MDA浓度显著低于模型组,病理学损伤减轻.结论为,注射3g/kg～10g/kgHQI可减轻CCl4引起的小鼠肝脏损伤.本实验结果提示,HQI具有减少脂质过氧化物产生的作用.     

两种富硒植物对高脂血症模型大鼠肝指标的影响

对比研究高脂血症动物模型中,摄入高剂量不同富硒植物对大鼠硒累积和过氧化脂质等肝指标的影响,为指导科学安全利用植物硒预防和治疗高脂血症提供基本实验依据。采用高脂饲料诱发大鼠高脂血症模型,设计富硒大蒜和富硒绿羽治疗组和预防组,分别以高剂量两种富硒植物悬浊液连续灌胃1个月和3个月,测定和对比分析大鼠肝脏硒累积、丙二醛（MDA）含量和谷胱甘肽过氧化物酶（GPx）活性。结果发现长期高脂饲料喂养显著降低大鼠肝脏硒浓度,摄入富硒绿羽的大鼠肝硒累积显著高于摄入富硒大蒜的,预防组与治疗组大鼠肝组织硒累积没有显著差异,证明大鼠肝脏组织硒累积主要取决于摄取的富硒植物硒种类,高剂量两种实验用富硒植物硒对高脂血症模型动物肝脏不存在安全危害;与高脂饲料模型对照组相比,补充植物硒能够在一定程度上降低大鼠肝MDA水平,显著提高肝GPx活性,表明植物硒可通过GPx清除肝组织MDA,防止长期高脂饲料引起的肝脏氧化损伤;富硒大蒜预防组和治疗组大鼠肝MDA含量存在显著差异,但两组大鼠肝GPx活性差异不显著,推断两种富硒植物硒清除肝脏MDA的机制不完全一致。     

绿侧花海葵寡肽对CCl_4引起的小鼠急性肝损伤模型的影响

研究绿侧花海葵寡肽(APP-H)对四氯化碳(CCl4)引起的小鼠急性肝损伤模型的影响。48只ICR小鼠随机分成6组,每组8只:正常对照组、肝损伤模型组、绿侧花海葵寡肽AAP-H低剂量组(75 mg·kg-1)、AAP-H中剂量组(150 mg·kg~(-1))、AAP-H高剂量组(300 mg·kg-1)和阳性对照组(联苯双酯(150 mg·kg-1))。连续灌胃7天,正常组与模型组用等计量纯水灌胃。第7天末采用腹腔注射1%CCl_4橄榄油溶液制备小鼠急性肝损伤模型,测定小鼠血清ALT、AST和小鼠肝脏组织匀浆中GSH-Px、SOD、MDA水平,HE染色观察APP-H对小鼠肝脏的病理学影响及微观结构影响。结果表明,AAP-H可降低小鼠血清中ALT、AST活性(P0.05),抑制肝组织中MDA的上升(P0.05),上调SOD和GSH-Px活性(P0.05),使肝细胞的损伤减轻。本实验初步证明APP-H对CCl_4致小鼠急性肝损伤有一定的保护作用。     

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