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| 1 | 水平管内水环输送模拟稠油减阻特性显示文摘基于自主设计加工并搭建的水环输送稠油减阻模拟管路系统,采用500#白油模拟稠油,试验研究了稠油在水环作用下的水平管流阻力特性,分析了油相表观流速(0.3~1.0m/s)、水相表观流速(0.11~0.72m/s)及入口含水率(0.13~0.49)对水润滑管流流型特征及减阻效果的影响。结果表明:环状水膜可有效隔离并润滑油壁界面,油-水两相流流型总体上呈稳定的偏心环状流结构;水环输送可大幅降低管道输送过程中的压降,其压降值仅为相同油流量下纯油输送压降的1/55~1/27;当入口含水率为0.13~0.27时,水环输送的效能显著,输油效率均高于40;油相表观流速和入口含水率的增加会增大单位管长压降,降低水环输送的减阻效果和输油效能。 | 敬加强 尹晓云 MASTOBAEV Boris N VALEEV Anvar R 孙杰 王思汗 刘华平 庄乐泉 范峥嵘 | 2021 | 化工进展2021,40,2: | 9 |
| 2 | T形管内雾状气液两相流相分离特性研究显示文摘针对管汇系统中普遍存在并联引出管内气液两相流量分配不均及气液比例不同的现象,开展了T形管内雾状气液两相流相分离特性研究。通过数值模拟研究,得到了水平T形管内两相流动特性、轴向压降变化规律及相分离特征。研究结果表明:空气-水雾状流在T形管水平主管分流处的流速与压力急剧变化、相分离现象显著,而在远离分流处,流速稳定、压力变化缓慢、气液两相分布均匀;该雾状流沿水平主管和侧支管的轴向压降在分流处大幅变化,而在远离分流处,压降变化规律与正常管输压降变化规律一致;流体扰动、气液两相惯性力差异及其相互作用等造成雾状两相流在管内相分配不均。研究结果可为实际工程中的管汇设计及优化提供理论依据。 | 敬加强 尹晓云 Boris NMastobaev Anvar RValeev 孙杰 刘力华 | 2021 | 石油机械2021,49,9: | 2 |
| 3 | Isoquinoline-mediated 5-vinylation and N-vinylation of benzo[d]oxazole-2-thiol and benzo[d]thiazole-2-thiol显示文摘An effective route to 5-vinylated and N-vinylated benzo[d]oxazole-2(3H)-thiones and benzo[d]thiazole-2(3H)-thiones is described via reaction of acetylenic esters and benzo[d]oxazole-2-thiol and benzo[d]thiazole-2-thiol in the presence of 15 mol%of isoquinoline. | Issa Yavari Samira Nasiri-Gheidari Anvar Mirzaei | 2012 | Chinese Chemical Letters2012,23,1: | 2 |
| 4 | Generalized and species-specific prediction models for aboveground biomass in semi-steppe rangelands显示文摘Aims The accurate estimation of aboveground biomass in vegetation is critical for global carbon accounting.Regression models provide an easy estimation of aboveground biomass at large spatial and temporal scales.Yet,only few prediction models are available for aboveground biomass in rangelands,as compared with forests.In addition to the development of prediction models,we tested whether such prediction models vary with plant growth forms and life spans,and with the inclusion of site and/or quadrat-specific factors.Methods We collected dataset of aboveground biomass from destructive harvesting of 8088 individual plants belonging to 79 species in 735 quadrats across 35 sites in semi-steppe rangelands in Iran.A logarithmic transformation of the power-law model was used to develop simple prediction models for the easy estimation of above-ground biomass using plant coverage and vegetation density as predictors for the species-specific model,multispecies and plants of different growth forms and life spans.In addition,additive and multiplicative linear regression models were developed by using plant coverage and one categorical variable from the site and/or quadrat-specific factors.Important Findings The log-transformed power-law model based on plant coverage pre-cisely predicted aboveground biomass across the whole dataset for ei-ther most of the species-specific model,multispecies or plants of the same growth forms(shrubs,forbs or graminoids)and life spans(annuals,biennials or perennials).The addition of vegetation density as a single or in a compound predictor variable had relatively poor performance com-pared with the model having plant coverage only.Although generalizing at the levels of plant group forms and/or life spans did not substantially enhance the model-fit and validation of the plant coverage-based mul-tispecies model,the inclusion of plant growth forms or life spans as a categorical predictor variable had performed well.Generalized models in this study will greatly contribute to the accurate and easy predic-tion of aboveground biomass in the studied rangelands and will be also useful to rangeland practitioners and ecological modellers interested in the global relationship between biodiversity and aboveground biomass productivity across space and time in natural rangelands. | Anvar Sanaei Arshad Ali Khaled Ahmadaali Esfandiar Jahantab | 2019 | Journal of Plant Ecology2019,12,3: | 2 |
| 5 | 中国新疆地区和塔吉克斯坦黄地老虎发生世代与种群动态的比较研究显示文摘【目的】对黄地老虎(Agrotis segetum Schiff)在我国新疆,塔吉克斯坦的发生世代及种群动态进行比较,研究我国新疆黄地老虎种群演替原因,为塔吉克斯坦黄地老虎防治提供技术服务。【方法】应用测报灯对我国新疆石河子(2006、2009~2011),塔吉克斯坦(2014)农田黄地老虎进行监测,分析我国新疆,塔吉克斯坦黄地老虎的发生世代及种群动态。【结果】在塔吉克斯坦,黄地老虎一年发生3~4代,高峰期单灯诱蛾量达到90头;黄地老虎在我国新疆大部分地区1年发生3代,南疆个别地区发生3~4代,北疆少数地区发生1~2代,高峰期单灯诱蛾量<40头/灯,已不再作为防治对象。【结论】黄地老虎在塔吉克斯坦平均每年比我国新疆多发生1~2代,塔吉克斯坦一年发生3~4代,我国新疆大部分地区1年发生3代。在塔吉克斯坦,黄地老虎成虫高峰期诱蛾量远大于我国新疆地区。 | 王盼盼 Abdusattor Saidov Anvar Jalilov 阿迪力.吾彼尔 哈里提.哈山 刘兆海 马英杰 吕昭智 | 2017 | 新疆农业科学2017,54,5: | 2 |
| 6 | Eryxin通过抑制芳香化酶表达调控雌激素生物合成显示文摘雌激素水平与女性生理及心理健康密切相关,为探讨eryxin对雌激素生物合成的影响,采用Am-blue法检测eryxin对人卵巢颗粒细胞KGN细胞增殖的影响,磁微粒分离酶联免疫法检测雌二醇的合成,Western blotting检测KGN细胞芳香化酶蛋白表达水平,RT-qPCR检测KGN细胞芳香化酶基因及其启动子PromoterⅡ表达水平.结果显示,在1-150μg/mL范围内eryxin对细胞增殖没有影响,但是可以显著抑制KGN细胞中雌二醇的合成,且具有剂量依赖性;eryxin对芳香化酶过表达的HEK-293A细胞中雌二醇的合成没有影响;eryxin显著下调芳香化酶的mRNA和蛋白质表达水平,抑制芳香化酶启动子PromoterⅡ表达;降低eryxin中蛋白质含量可显著削弱其抑制雌激素合成的活性.本研究表明eryxin抑制人卵巢颗粒细胞雌激素的合成是通过其抑制芳香化酶mRNA及蛋白表达来实现的,结果可为进一步发现新型抗雌激素生物合成药物治疗相关相关疾病奠定基础. | 史楠 史小可 Jovliqizi Azimova Bahtigul Abduvaliev Anvar Rakhmanov Alisher 王飞 | 2019 | 应用与环境生物学报2019,25,5: | 2 |
| 7 | Isolation and characterization of lignins extracted from flax shires using pressurized a- queous ethanol显示文摘 | Anvar U.Buranov Kelly A.Ross Giuseppe Mazza | | 0,,19: | 1 |
| 8 | Effect of working length measurement by electroni apex locator or radiography on the a adequacy of final working length:a randomized clinical trial显示文摘 | Ravanshad S Adl A Anvar J | 2010 | J Endod2010,36,11: | 1 |
| 9 | The Medicinal Plants of Uzbekistan and Kyrgyzstan显示文摘 | David E Z lgor V B Anvar G K | 2012 | Medicinal Plants of Central Asia: Uzbekistan and Kyrgyzstan2012,,7: | 1 |
| 10 | Thermal transport in MWCNT sheets and yarns显示文摘 | Ali E. Aliev Csaba Guthy Mei Zhang Shaoli Fang Anvar A. Zakhidov John E. Fischer Ray H. Baughman | 2007 | Carbon2007,,15: | 1 |
| 11 | Carbon nanotubes-the route toward applications显示文摘 | Baughman R H Anvar A Z de Heer W A | 2002 | Science2002,297,5582: | 1 |
| 12 | Carbon nanotubes-The route twoward applications显示文摘 | Ray H Baughman Anvar A Zakhidov Walt A de Heer | | 0,,5582: | 1 |
| 13 | Effect of working length measure-ment by electronic apex locator or radiography on the adequacy of final working length:a randomized clinical trial显示文摘 | Ravanshad S Adl A Anvar J | 2010 | J Endod2010,36,11: | 1 |
| 14 | Carbon Nanotubes-the Route Toward Applications显示文摘 | Baughman Ray H Zakhidov Anvar A de Heer Walt A | | 0,,: | 1 |
| 15 | Magnetooptics of non-Kramers Eu^(3+) ions in garnets:analysis complemented by crystal-field splitting modeling calculations显示文摘Spectra of absorption,luminescence,magnetic circular dichroism(MCD),and magnetic circular polarization of luminescence(MCPL) in Gd3 Ga5 O12 :Eu3+and Eu3 Ga5 O12 garnets were studied within the visible spectral range at 300 K.Analysis of the spectral and temperature dependences of the magnetooptical and optical spectra made it possible to identify the magneto-dipole(MD) and electro-dipole(ED) 4f→4f transitions occurring between Stark sublevels of the7FJ(J=1,2) and5D0 multiplets in Eu3+-containing garnet structures.Quantum mechanical 'mixing' had significant influence on quasi-degenerate states of the non-Kramers rare-earth Eu3+ion for Eu3 Ga5 O12 in MCD due to forbidden MD transition7F1 →5D0 and for Gd3 Ga5 O12 :Eu3+in MCPL due to MD 4f→4f transition5D0 →7F1 and forced ED-transition5D0 →7F2.A parameterized Hamiltonian defined to operate within the entire 4f(6)ground electronic configuration of Eu3+ion was used to model the experimental Stark levels,including their irreducible representations and wavefunctions.The crystal-field parameters were determined through a Monte-Carlo method in which nine independent crystal-field parameters,Bk q,were given random starting values and optimized using standard least-squares fitting between calculated and experimental levels.The final fitting standard deviation between 57 calculated-to-experimental levels was 0.73 meV. | Uygun V.Valiev John B.Gruber Anvar K.Mukhammadiev Vasiliy O.Pelenovich 付德君 Gary W.Burdick | 2013 | Journal of Rare Earths2013,31,9: | 1 |
| 16 | Carbon nanotubes -The route toward applications 显示文摘 | Baughman Ray H Zakhidov Anvar A de Heer Walt A | 2002 | Science2002,297,: | 1 |
| 17 | Isolation and characterization of lignins extracted from flax shives using pressurized aqueous ethanol 显示文摘 | Anvar U Buranov K A Mazza G | 2010 | Bioresource Technology2010,101,19: | 1 |
| 18 | Deregulation of the ubiquitin-proteasome system is the predominant molecular pathology in OPMD animal models and patients显示文摘 | Seyed Yahya Anvar Peter AC't Hoen | 2011 | Skelet Mus- cle2011,1,: | 1 |
| 19 | Effect of Working Length Measurement by Elec- tronic Apex Locator or Radiography on the Adequacy of Final Work- ing Length:A Randomized Clinical Trial 显示文摘 | Sbobreb Ravansbad DDS MSD Alireza Adl DDS MSD and Javad Anvar DDS MSD | 2010 | Consort Randomized Clinical Trial2010,1111,36: | 1 |
| 20 | A fast and accurate calibration algorithm for real-time locating systems based on the received signal strength indication显示文摘 | Anvar Narzullaev Yongwan Park Kookyeol Yoo | 2011 | International Journal of Electronics and Communications(AEü)2011,,65: | 1 |