检索结果-南通市图书馆

维甲酸对鸡胚生殖细胞减数分裂调控作用的研究

在线全文

cnki会议

学校读者我要写书评

暂无评论

畜牧与兽医 2012年第S1期44卷 218-219页

作者：于敏莉俞萍 imdad h leghari 米玉玲张才乔浙江大学动物科学学院动物医学系浙江杭州310058

减数分裂是生殖细胞特有的、分化形成配子的过程,且在雌雄两性的发生时间不同。在胚胎期,雌性卵巢内生殖细胞即开始进入减数分裂,但在胚胎期睾丸中,RA被CYP26B1降解,使生殖细胞停滞在有丝分裂G0/G1期。在本实验中,我们结合胚胎期卵巢的... 详细信息

减数分裂是生殖细胞特有的、分化形成配子的过程,且在雌雄两性的发生时间不同。在胚胎期,雌性卵巢内生殖细胞即开始进入减数分裂,但在胚胎期睾丸中,RA被CYP26B1降解,使生殖细胞停滞在有丝分裂G0/G1期。在本实验中,我们结合胚胎期卵巢的体外培养和RNA干扰等手段,探索RA对鸡胚胎期生殖细胞减数分裂中的调控作用及其机制。

关键词：细胞减数分裂鸡胚胚胎期免疫荧光体外培养两性的维甲酸 RNA 信号通路合成酶基因

Influence of reproductive organs parameters on the egg quality in different hen breeders

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Influence of reproductive organs parameters on the egg quali...

全国动物生理生化第七届全国代表大会暨第十三次学术交流会

作者： imdad h.leghari 李军曾卫东米玉玲张才乔浙江大学动物科学学院动物医学系 Department of Poultry husbandary Sindh Agriculture University

Since last three decades poultry production is facing the trend of high egg production,but currently this trend is also consorted with the egg quality *** egg quality depends on the synthesis of the yolk from the liver and its transportation to the oocytes and then deposition of albumin and shell gland layers around *** the about facts it is clear that every individual organ and its parts have

关键词：

维甲酸对鸡胚生殖细胞减数分裂调控作用的研究

在线全文

cnki会议

学校读者我要写书评

暂无评论

维甲酸对鸡胚生殖细胞减数分裂调控作用的研究

全国动物生理生化第十二次学术交流会

作者：于敏莉俞萍 imdad h leghari 米玉玲张才乔浙江大学动物科学学院动物医学系

减数分裂是生殖细胞特有的、分化形成配子的过程,且在雌雄两性的发生时间不同。在胚胎期,雌性卵巢内生殖细胞即开始进入减数分裂,但在胚胎期睾丸中,RA被CYP26B1降解,使生殖细胞停滞在有丝分裂G0/Gl期。在本实验中,我们结合胚胎期卵巢的...

减数分裂是生殖细胞特有的、分化形成配子的过程,且在雌雄两性的发生时间不同。在胚胎期,雌性卵巢内生殖细胞即开始进入减数分裂,但在胚胎期睾丸中,RA被CYP26B1降解,使生殖细胞停滞在有丝分裂G0/Gl期。在本实验中,我们结合胚胎期卵巢的体外培养和RNA干扰等

关键词：

雌激素对蛋鸡肝脏中卵黄蛋白前体物生成的影响

在线全文

cnki会议

学校读者我要写书评

暂无评论

雌激素对蛋鸡肝脏中卵黄蛋白前体物生成的影响

全国动物生理生化第七届全国代表大会暨第十三次学术交流会

作者：李军 imdad h.leghari 贺斌曾卫东米玉玲张才乔浙江大学动物科学学院动物医学系

类固醇激素及其受体在脊椎动物的生长发育和生殖活动中起着重要的作用,对于鸟类来说,产蛋的许多环节都与其调节作用紧密相关,蛋黄中很多物质的生成都是雌激素依赖性。雌激素诱导的下游的基因表达主要通过雌激素核受体ERα和ERβ及G蛋白...

类固醇激素及其受体在脊椎动物的生长发育和生殖活动中起着重要的作用,对于鸟类来说,产蛋的许多环节都与其调节作用紧密相关,蛋黄中很多物质的生成都是雌激素依赖性。雌激素诱导的下游的基因表达主要通过雌激素核受体ERα和ERβ及G蛋白偶联的膜受体(GPR30)介导而实现。本实验旨在研究雌激素受体在卵巢生成的雌激素诱导肝脏中卵黄蛋白原生成的作用。首先检测了蛋

关键词：

Strong interfacial charge transfer between hausmannite manganese oxide and alumina for efficient photocatalysis

在线全文

cnki会议

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2021年第5期34卷 147-159页

作者： Aisha Kanwal Shamaila Sajjad Sajjad Ahmed Khan leghari Muhammad Naeem Khan International Islamic University H-10 IslamabadPakistan Pakistan Institute of Engineering and Applied Sciences Islamabad 44000Pakistan Department of Chemistry Government College of ScienceLahorePakistan

Well crystalline manganese oxide(Mn_(3)O_(4))nanoparticles anchored on gamma alumina(γ-Al_(2)O_(3))have been successfully tailored via a proficient and cost effective chemical process as an efficient material for photo *** indicated the composite formation ofγ-Al_(2)O_(3) and hausmannite structure of Mn_(3)O_(4).SEM and TEM revealed that hetero structure of Mn_(3)O_(4)/γ-Al_(2)O_(3) exhibits an amalgam of aggregated nanoparticles and *** demonstrated the chemical states of binary *** band gap tuning has been performed withγ-Al_(2)O_(3) nanoparticles by assimilating hausmannite Mn_(3)O_(4) particles into flower like microstructure of Al_(2)O_(3).The photoluminescence spectra affirmed the enhancement in charge separation in Mn_(3)O_(4)/γ-Al_(2)O_(3) binary hybrid *** band gap becomes narrow with the increase in concentrations of Mn_(3)O_(4).The narrowing of band gap is concorded with crystalline domains of primary aggregated *** elucidate the mechanism of the photocatalytic activity linear sweep voltammetry was *** results showed that Mn_(3)O_(4)/γ-Al_(2)O_(3) nanocomposite revealed the enhancement in current density as compared to pureγ-Al_(2)O_(3) which confirmed the electron transfer from Mn_(3)O_(4) toγ-Al_(2)O_(3) through the interfacial potential gradient in conduction *** optimum concentration of 6.0%Mn_(3)O_(4)/γ-Al_(2)O_(3) for hybrid structure showed an excellent photocatalytic activity under visible light due to narrow band gap *** degree distribution of Mn_(3)O_(4) nano architects overlying onγ-Al_(2)O_(3) induces a significant synergic effect betweenγ-Al_(2)O_(3) and hausmannite phase of manganese oxide(Mn_(3)O_(4)).This strong interfacial contact betweenγ-Al_(2)O_(3) and Mn_(3)O_(4) endures the quick transfer of photo generated charge carriers across interface.

关键词： hausmannite Mn_(3)O_(4) Alumina Band gap tuning Interfacial charge transfer Nanomaterials Catalysis

EPIZOIC ALGAE FROM A TELEOST FISh, Labeo rohita

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1985年第1期30卷 118-120页

作者： S. M. leghari S. I. h. JAFRI G. M. MEhAR Department of Freshwater Biology and Fisheries University of Sind Jamshoro PakistanDepartment of Freshwater Biology and Fisheries University of Sind Jamshoro PakistanDepartment of Freshwater Biology and Fisheries University of Sind Jamshoro Pakistan

Epizoic algae growing upon molluscs and turtles were earlier reported by hutchinson and La Rivers. Recently leghari (1983) has reported epizoic algae from some molluscs of Sind. Many species of green and blue-green algae have been recorded as growing upon the body of fish. Vinyard found that Cladophora sp. occurred on the operculum of Ictiobus bubalus from lake Texoma, USA. In 1960 hoffman et al. re-

关键词： hutchinson algae earlier body Labeo rohita algal deals 丘沈 Pakistan fungus

Design and Evaluation of Dadu Canal Lining for Sustainable Water Saving

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Journal of Water Resource and Protection 2013年第7期5卷 689-698页

作者： Ashfaque A. Memon Khalifa Q. leghari Agha F. h. Pathan Kanya L. Khatri Sadiq A. Shah Kanwal K. Pinjani Rabia Soomro Kameran Ansari Department of Civil Engineering Mehran UET Khairpur Campus Sindh Pakistan Department of Civil Engineering Mehran UET Jamshoro Sindh Pakistan Water Resources Division National Engineering Services Lahore Pakistan

Pakistan livelihood depends on agriculture and so for this on irrigation system. The irrigation system in Sindh province depends on three barrages. The canals off taking from these three barrages irrigate 5.5 million hectares of agriculture land. Sukkur Barrage, which is the oldest one, irrigates more than 2.0 million hectares of land. The Dadu Canal off taking from Sukkur barrage is an earthen canal. A huge amount of irrigation water is lost from the canal in the form of seepage from banks and bed. It is estimated that 40 to 50 per cent of water is lost between the canal head works to the farm-gate. The seepage from the canal creates twin problems of salinity and water logging consequently a large agriculture land has gone out of use, and this process is continued particularly in Sindh. Lining of Canals is considered an effective solution to this problem. But lining of canals in Sindh is a great issue as canals will need to be closed long enough to deprive the farmers at least one crop season and the farmers are unable to pay this price for canal. Therefore, in this study, the Dadu Canal is proposed to be redesigned as an adjacent lined canal which involves design of cross section for various lining options at locations where changes in the hydraulic conditions occur at cross regulators and fall structures. The proposed lining is preferred to be plain cement concrete lining which is selected after investigating local conditions. Quantity and cost estimation at selected RDs (Reduced Distance) proved feasible and significant in long term functioning of Dadu Canal.

关键词： Dadu Canal Concrete Lining Canal Design Lining Evaluation Sustainable Water Saving