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22篇 您的检索式:作者名="Jiangwei Yu"
    题名 作者 年代 出处 被引量
1Different Transcription Profiles of SOCS-3,ob and IGF-I Genes and their Possible Correlations in Obese and Lean Pigs显示文摘猪品种在胖免职和肌肉发展能力有重要差别。然而,在这些差别后面的分子的机制仍然是 unknown.Inthis 学习,三候选人基因的表示模式,压制或表明 3 的 cytokine ( SOCS-3 ),肥胖( ob )和像胰岛素的生长因素我( IGF-I ),它涉及脂肪质的新陈代谢或肌肉开发,被分析。全部的 RNA 从 8-month-old Bamei 的背面的下的脂肪质的组织和 longissimus 被提取, Largewhite pigs.Semiquantitative reversetranscription 聚合酶链反应被用来在肌肉组织在脂肪质的组织,和 SOCS-3 和 IGF-I 基因决定 SOCS-3and ob 基因的表示层次。结果证明在脂肪质的组织, SOCS-3 的表示水平在 Bamei 是显著地更高的(肥胖) 猪比那在 Largewhite (瘦) 猪(P<0.01 ) 。然而,在肌肉组织,它在 Largewhite 猪(P<0.01 ) 比那是显著地更低的 inBamei。而且, SOCS-3 的表示断然在肌肉组织在脂肪质的组织和 IGF-I 的被相关到 ob 的。这些调查结果建议在 SOCS-3 基因表达的差别铺平在脂肪质并且肌肉纸巾,在在肌肉组织的 SOCS-3 和 IGF-I 之间的在在脂肪质的组织的 SOCS-3 和 ob 之间的关系,和那,可能贡献在肥胖、瘦的猪之间的不同胖免职和肌肉发展能力。Jiangwei WU Bo WANG Haowei ZHANG Taiyong YU Gongshe YANG 2007Acta Biochimica et Biophysica Sinica2007,39,4:6
2Cyclometalated platinum(Ⅱ) complexes with sterically bulky camphor-derived groups as β-diketonate ancillary ligand:a new route to efficiently reducing π-π interactions and Pt-Pt interactions显示文摘A new series of mono-cyclometalated square planar platinum(Ⅱ) complexes have been synthesized and the single-crystal X-ray structures of complex 1 and 2 have been determined.The complexes have the general formula ppyPt(O^O),where ppy is 2-phenylpyridyl,and O^O is β-diketonate ancillary ligands with the acyl substituent group in position 3 of(D)-(+)-camphor.Although,like the many Pt(Ⅱ) complexes with square-planar geometry,these complexes have plane stacking modes in crystal structure,the sterically bulky camphor-derived groups compel extensive slipping of the molecular stacking planes,resulting in the negligible overlapping of the aromatic ring fragments between molecules and the considerable Pt-Pt distance.The resolved spectra and a little shifted emission in solid state of complexes show that there is significant reduction of π-π interactions and Pt-Pt interactions,and suggest these complexes may be good candidates for doped phosphorescent organic light emitting diodes(PhOLEDs) and even for nondoped PhOLEDs.LUO KaiJun,XIE Yu,XU LingLing,WANG JiangWei,ZHANG LiFang & ZHAO KeQing College of Chemistry and Materials Science,Sichuan Normal University,Chengdu 610068,China 2010Science China Chemistry2010,53,1:5
3The spatial variation of soil bacterial community assembly processes affects the accuracy of source tracking in ten major Chinese cities显示文摘Urban soils harbor billions of bacterial cells and millions of species.However,the distribution patterns and assembly processes of bacterial communities remain largely uncharacterized in urban soils.It is also unknown if we can use the bacteria to track soil sources to certain cities and districts.Here,Illumina MiSeq sequencing was used to survey soil bacterial communities from 529 random plots spanning 61 districts and 10 major cities in China.Over a 3,000 km range,community similarity declined with increasing geographic distance(Mantel r=0.62),and community composition was clustered by city(R^(2)=0.50).Within cities(<100 km),the aforementioned biogeographic patterns were weakened.Process analysis showed that homogenizing dispersal and dispersal limitation dominated soil bacterial assembly at small and large spatial scales,respectively.Accordingly,the probabilities of accurately tracking random soil sources to certain cities and districts were 90.0% and 66.7%,respectively.When the tested samples originated from cities that were more than 1,265 km apart,the soil sources could be identified with nearly 100% accuracy.Overall,this study demonstrates the strong distance-decay relationship and the clear geographic zoning of urban soil bacterial communities among cities.The varied importance of different community assembly processes at multiple spatial scales strongly affects the accuracy of microbial source tracking.Teng Yang Yu Shi Jun Zhu Chang Zhao Jianmei Wang Zhiyong Liu Xiao Fu Xu Liu Jiangwei Yan Meiqing Yuan Haiyan Chu 2021Science China(Life Sciences)2021,64,9:4
46 GHz hyperfast rotation of an optically levitated nanoparticle in vacuum显示文摘We report an experimental observation of a record-breaking ultrahigh rotation frequency about 6 GHz in an optically levitated nanoparticle system. We optically trap a nanoparticle in the gravity direction with a high numerical aperture (NA) objective lens,which shows significant advantages in compensating the influences of the scattering force and the photophoretic force on the trap,especially at intermediate pressure (about100 Pa). This allows us to trap a nanoparticle from atmospheric to low pressure (10^(-3)Pa) without using feedback cooling. We measure a highest rotation frequency about 4.3 GHz of the trapped nanoparticle without feedback cooling and a 6 GHz rotation with feedback cooling,which is the fastest mechanical rotation ever reported to date.Our work provides useful guides for efficiently observing hyperfast rotation in the optical levitation system and may find various applications such as in ultra-sensitive torque detection,probing vacuum friction,and testing unconventional decoherence theories.YUANBIN JIN JIANGWEI YAN SHAH JEE RAHMAN JIE LI XUDONG YU JING ZHANG 2021Photonics Research2021,9,7:3
5Impact of switching frequencies on the TID response of SiC power MOSFETs显示文摘Different switching frequencies are required when SiC metal-oxide-semiconductor field-effect transistors(MOSFETs)are switching in a space environment.In this study,the total ionizing dose(TID)responses of SiC power MOSFETs are investigated under different switching frequencies from 1 kHz to 10 MHz.A significant shift was observed in the threshold voltage as the frequency increased,which resulted in premature failure of the drain-source breakdown voltage and drain-source leakage current.The degradation is attributed to the high activation and low recovery rates of traps at high frequencies.The results of this study suggest that a targeted TID irradiation test evaluation method can be developed according to the actual switching frequency of SiC power MOSFETs.Sheng Yang Xiaowen Liang Jiangwei Cui Qiwen Zheng Jing Sun Mohan Liu Dang Zhang Haonan Feng Xuefeng Yu Chuanfeng Xiang Yudong Li Qi Guo 2021Journal of Semiconductors2021,42,8:2
6Promoting nitric oxide electroreduction to ammonia over electron-rich Cu modulated by Ru doping显示文摘Electrocatalytic nitric oxide(NO)reduction is a promising strategy to produce ammonia.Developing a facile approach to synthesize efficient catalysts with enhanced NO electroreduction performance is highly desirable.Here,a series of Ru-doped Cu materials are constructed through in situ electroreduction of corresponding metal hydroxides.The optimized Ru_(0.05)Cu_(0.95)exhibits superior electrocatalytic performance for ammonia synthesis by using NO/Ar(1/4,n/n)as the feedstocks(Faradaic efficiency:64.9%,yield rate:17.68μmol cm^(-2)h^(-1)),obviously outperforming Cu counterpart(Faradaic efficiency:33.0%,yield rate:5.73μmol cm^(-2)h^(-1)).Electrochemical in situ Fourier transform infrared(FTIR)spectroscopy and online differential electrochemical mass spectrometry(DEMS)are adopted to detect intermediates and unveil the possible reaction pathway.The downshift of the Cu d-band center induced by Ru doping facilitates the rate-limiting hydrogenation step and decreases the desorption energy of NH_(3),leading to high Faradaic efficiency and yield of ammonia.Jiangwei Shi Changhong Wang Rong Yang Fanpeng Chen Nannan Meng Yifu Yu Bin Zhang 2021Science China Chemistry2021,64,9:2
7Flexural Wave Bandgap Property of a Periodic Pipe with Axial Load and Hydro-Pressure显示文摘A periodical composite material pipe is proposed based on the Bragg scattering mechanism of phononic crystals (PCs). The band gap (BG) properties of the flexural wave in this PC pipe under axial load and hydro-pressure are calculated using the transfer matrix (TM) method. The frequency response functions (FRFs) of the PC pipe under axial load and hydro-pressure are calculated using the finite element approach, and the mechanism is elucidated to illustrate the phenomenon. The results show that axial load and hydro-pressure and their combination all have a great influence on the flexural vibration proper ties. This research offers theoretical support for research on PC pipes with complex conditions and is of great significance in solving the problem of high pressure.Jiangwei Liu Dianlong Yu Zhenfang Zhang Huijie Shen Jihong Wen 2019Acta Mechanica Solida Sinica2019,32,2:1
8Total dose irradiation and hot-carrier effects of sub-micro NMOSFETs显示文摘Cui Jiangwei Xue Yaoguo Yu Xuefeng 0,,01:1
9On-demand assembly of optically levitated nanoparticle arrays in vacuum显示文摘Realizing a large-scale fully controllable quantum system is a challenging task in current physical research and has broad applications.In this work,we create a reconfigurable optically levitated nanoparticle array in vacuum.Our optically levitated nanoparticle array allows full control of individual nanoparticles to form an arbitrary pattern and detect their motion.As a concrete example,we choose two nanoparticles without rotation signals from an array to synthesize a nanodumbbell in situ by merging them into one trap.The nanodumbbell synthesized in situ can rotate beyond 1 GHz.Our work provides a platform for studying macroscopic many-body physics and quantum sensing.JIANGWEI YAN XUDONG YU ZHENG VITTO HAN TONGCANG LI JING ZHANG 2023Photonics Research2023,11,4:0
10Glutamic acid-assisted hydrothermal recrystallization to configure bamboo-like carbon nanotubes for improved triiodide reduction显示文摘Carbon nanotubes(CNTs)have been far and wide employed as the counter electrodes(CEs)in dyesensitized solar cells because of their individual physical and chemical properties.However,the techniques available now,such as chemical vapor deposition,arc discharge and laser ablation for synthesizing CNTs,commonly suffer from rigorous operations and complicated steps,which make the process difficult to be controlled.Herein,we present a simple and facile glutamic acid-assisted hydrothermal recrystallization strategy to construct bamboo-like CNTs(GHP-BC-x).Generally,the conventional organic dye3,4,9,10-perylene tetracarboxylic dianhydride(PTCDA)is used as a precursor and glutamic acid efficiently promotes the recrystallization of the perylene cores'planarπ-conjugated system in PTCDA under hydrothermal conditions and then self-assembles into one-dimensio nal nano rods with improved crystallization degree,finally resulting in the morphology of bamboo-like CNTs after carbonization.When applied as the counter electrodes,the GHP-BC-3 displays a remarkable power conversion efficiency of8.25%,benefiting from the superb electrical conductivity and mass transfer dynamics,superior to that of Pt CE(7.62%).Chun Yao Jiangwei Chang Yiwang Ding Chang Yu Jieshan Qiu 2021Chinese Journal of Chemical Engineering2021,34,9:0
11Preparation of highly dispersed supported Ni-Based catalysts and their catalytic performance in low temperature for CO methanation显示文摘The use of non-noble nickel-based catalysts for low temperature CO methanation has been a challenge in recent years.Herein,MgAl layered double oxides sample with high dispersion synthesized by a facile N-(2-Hydroxyethyl)ethylenediaminetriacetic acid assisted wetness impregnation approach,demonstrates much superior catalytic activity and exceptional stability for CO methanation in comparison with the classical Ni/MgAl-LDO catalyst prepared by the ordinary wetness impregnation method.HRTEM results showed that N-(2-Hydroxyethyl)ethylenediaminetriacetic acid played a positive role in the dispersion of Ni,as well as Ni-support interaction.Well-dispersed Ni particles with a size of about 5 nm were formed in the presence of N-(2-Hydroxyethyl)ethylenediaminetriacetic acid.Compared to the Ni/MgAl-LDO prepared by conventional impregnation method,the NH-Ni/MgAl-LDO exhibited superior catalytic performance,especially excellent thermal stability.The NH-Ni30/MgAl-LDO catalyst was found to keep a 70%CO conversion even at 160◦C which demonstrates its good low temperature performance.From the in situ FTIR observations,this good performance at low temperatures may be linked to the delocalization of electrons around CO caused by surface hydroxyl groups.Yongbin Yao Jing Xu Xuhong Guo Jiangwei Li Qixia Zhang Jiangbing Li Chao Wang Mengjuan Zhang Bin Dai Feng Yu Sebastien Thomas Anne-Cecile Roger 2020Carbon Resources Conversion2020,3,1:0
12Four-birds-with-one-stone:A multifunctional Ti-based material for solar-driven water evaporation显示文摘Sustainable,environmentally friendly and low-energy desalination materials have important research value for the increasing demand of freshwater year by year.However,it is a huge challenge to maintain high heat energy transfer efficiency without reducing the heat conversion capacity of specific solar photothermal conversion materials.Moreover,their efficiency and durability are greatly limited by the problems of seawater corrosion,oil,and bacteria pollutions.Till now,no related work has been reported to solve all the aforementioned problems via a simple four-birds-with-one-stone strategy.Herein,a class of multifunctional porous photothermal silver(Ag)modified Ti foams(Tf-TA/Ag series materials)is prepared for the development of advanced solar water evaporation devices,and provides alternative materials for alleviating freshwater crisis and treating sewage.The oil contact angle(OCA)changes from 41°to 180°,which significantly reduces the adhesion of oil.In addition,Tf-TA2/Ag sample also shows an excellent and sustained antibacterial effect,which maintains above 99.9%of antibacterial rate after repeated 5 times.The surface temperature of the Tf-TA2/Ag sample reaches 52.5℃ after simulated sun irradiation for 20 min,which is significantly higher than that of the contact groups(water:36.4℃,Ti foam:38.2℃ and Tf-TA2:40.9℃).The capacity of seawater evaporation and salt removal is enhanced due to the excellent photothermal properties,low reflectance,and uniform heat dissipation pores.The water production efficiency of Tf-TA2/Ag sample is 1.41 kg·m^(-2)·h^(-1) in artificial seawater and 0.76 kg·m^(-2)·h^(-1) in oily sewage under simulated sun irradiation.Furthermore,the hydrophilic and oleophobic properties of Tf-TA2/Ag are critical to extracting water from oil/water mixture in diverse water environments.Ultimately,this four-birds-with-one-stone approach provides a new perspective for the improvement of solar seawater desalination performance.Yannan Li Yaning Sun Dan Zhang Yu Xue Jie Wang Nan Zhang Jun Wang Jiangwei Zhang Yan Zhao Jun-Jie Liu 2024Nano Research2024,17,5:0
13Performance Development Target Setting of Passenger Car Diesel Engine显示文摘Setting engine emission targets to meet diesel car requirements is particularly important in engine performance development phase. Many researches are focused on associating vehicle performance with engine targets, but most work is done by testing, which is time and cost consuming, furthermore, the relationship of vehicle and engine will change when either engine or vehicle changes. A GT-Drive model to simulate New European Driving Cycle (NEDC) for passenger car is developed and calibrated by testing data, model precision is controlled within 5%. Time distribution of engine operating conditions when car running NEDC cycle has been analyzed, 10 critical major engine operating points are summarized according to running time proportion. Emission of NOx and smoke control regions containing these 10 points for target engine are set. Vehicle emissions are simulated and evaluated during engine development after engine performance test data are got, and engine combustion system layout and calibration are adjusted until vehicle targets are met. Vehicle is tested in chassis dynamometer finally, the testing results show a good agreement with the simulated results with an error of less than 5%, which proves that the emission value exchange of vehicle and engine is reliable. Performance target decomposition method for passenger car diesel presented can greatly shorten the development cycle and save costs.ZHENG Guangyong YU Xiumin LIU Jiangwei SONG Tao LI Wenxiang 2013Chinese Journal of Mechanical Engineering2013,26,3:0
14Centrifuge modeling of tunneling-induced ground surface settlement in sand显示文摘Stress changes in the soil induced by tunnel excavation may cause excessive ground settlement.However,high-quality experimental data on ground settlement due to tunnel excavation are limited.In this study,centrifuge tests are conducted to investigate the threedimensional ground surface settlement,considering different intersection angles and cover-to-tunnel diameter ratios.The results indicate that the major influence zone along the longitudinal direction on the ground surface settlement is±1.25D,where D is the tunnel diameter.When the monitoring section is perpendicular to the tunneling direction,the transverse ground settlement due to the tunnel excavation is symmetrical with respect to the tunnel centerline.In contrast,an asymmetric ground settlement profile is observed when the monitoring section intersects the tunneling direction at an angle of 60.Applying a Gaussian curve to fit the ground surface settlement curve,the width parameter,K(i.e.,the distance between the tunnel centerline and the inflection point of the settlement trough to the tunnel burial depth),varies from 0.33 to 0.39.The ground surface settlement induced by twin tunnel excavation can be captured reasonably by superimposing two identical Gaussian curves.When the cover to tunnel diameter ratios(C/D)are 1.5 and 2.7,the maximum ground surface settlements are 0.67%of D and 0.35%of D,respectively.It is clear that the maximum ground surface settlement decreases with an increase in the C/D ratio.Hu Lu Jiangwei Shi Yu Wang Rong Wang 2019Underground Space2019,4,4:0
15Modern Literature Research on Children Sweat Syndrome based on TF-IDF显示文摘Objective:To explore the characteristics of intelligent syndrome diagnosis and intelligent syndrome differentiation of pediatric sweat syndrome by retrospectively studying the traditional Chinese medicine(TCM)-based diagnosis and rule of drug use on pediatric sweat syndrome in China Academic Journal Full-text Database(CNKI),Wanfang Database(WF)and VIP database.Methods:Modern literature on pediatric sweat syndrome was collected with Endnote software,and the collected data were input into The Microsoft Excel 2010 table.TF-IDF relative entropy quantitative analysis was used to extract the intelligent diagnosis and intelligent medication rule of pediatric sweat syndrome in modern literature.Results:TF-IDF was used to obtain the syndrome’s type-symptom fuzzy matrix and syndrome’s type-TCM fuzzy matrix of qi-yin deficiency and qi-deficiency.Conclusion:The intelligent syndrome diagnosis and intelligent syndrome differentiation law of modern data mining in the treatment of children sweat syndrome accord with the basic theory of TCM,and can provide clinical reference to a certain extent.Hongli Luo Jiangwei Yu Zhihui Du Shiyu Tan 2022Journal of Clinical and Nursing Research2022,6,2:0
16Compact fiber-optic diode-laser sensor system for wide-dynamic-range relative humidity measurement显示文摘A compact fiber-optic diode-laser sensor system for measuring relative humidity is studied. In such a system, a distributed feedback laser lasing near 1877 nm is used as light source while a high-precision Pt resistance as temperature sensor, an accuracy of 0.1% relative-humidity can be achieved. The laser sensor system is able to lock to the absorption peak and calculate the density of water vapor without any additional reference measurements. Using programs built in to the microcontroller unit, the laser system can switch functions between direct measurement at high density and second-harmonic detection at low density. The system can switch between the two modes automatically and work in a wide dynamic range.SUN Ke, XIE Liang JU Yu WU XuMing HOU Jie HAN Wei WANG Xin MAN JiangWei LIU Yu YUAN HaiQing LUO ZhenAo XIONG Shang ZHU NingHua 2011Chinese Science Bulletin2011,56,32:0
17Numerical investigation of heat transfer performance and bubble behavior of nucleate pool boiling in a confined space under rolling conditions显示文摘Nucleate pool boiling process is widely used in heat exchangers because of its excellent heat transfer performance.With the gradual increase of applications,more and more equipments work in a non-static state,but there is little research under rolling conditions.Therefore,it is necessary to investigate the influence of rolling motion on the nucleate pool boiling process.In this study,a numerical investigation of the nucleate pool boiling process under static and rolling conditions is performed based on the volume-of-fluid(VOF)method.Physical fields and phase distribution under static state and rolling motion are compared to investigate the effect of rolling motion on the nucleate pool boiling process.The results show that rolling motion greatly influences the bubble behavior and void fraction owing to the differences between flow fields.The void fraction decreased by 11.84%,48.82%,and 56.87%as the maximum rolling angle increased from 15°to 45°,and by 11.84%,22.27%,and 21.81%as the rolling period increased from 1 s to 3 s.The void fraction decreased by 11.84%,48.82%,and 56.87%as the maximum rolling angle increased from 15°to 45°.The heat transfer coefficients of different cases are compared,and it is found that the effects of rolling motion on heat transfer coefficients can be ignored.Jianjie Cheng Jiangwei Sun Weihao Ji Yu Dong Wei Li Yurong Chen 2023Energy Storage and Saving2023,2,1:0
18Evolution of precipitate and precipitate/matrix interface in Al-Zn-Mg-Cu(-Ag)alloys显示文摘Evolution of precipitate and precipitate/matrix interface in artificially aged Al-Zn-Mg-Cu(-Ag)alloys has been systematically studied.In the early stage of ageing,Ag,as a fast diffuser,can promote the formation of solute pairs and small clusters.Solute clusters are further demonstrated to be able to act as precursors forη’precipitates by in-situ STEM heating.With prolonged ageing time,the precipitate/matrix interface evolves from the Zn-dominated interface between early-stageη’and Al matrix to the Zn and Mg co-segregatedη’/Al andη_(2)/Al interfaces.Theη’/Al interfacial layers are shown to precede the formation ofη’,while theη_(2)/Al interfaces are found to be closely related to the thickening process ofη_(2)and the involved particular atomic movements are specified.Experimental observations and DFT calculations re-veal that forη’andη_(2),Ag can dissolve into the precipitate as well as locate at the precipitate/matrix interface without showing preference.For Cu,its dissolution in the precipitate and segregation on the interface mainly occur forη_(2)rather thanη’.The incorporation of Ag and Cu does not change the defined precipitate structure.Xingpu Zhang Zhongkang Han Liangliang Xu Haohan Ni Xiaojuan Hu Haofei Zhou Yu Zou Jiangwei Wang 2023Journal of Materials Science & Technology2023,,7:0
19Cystic adenoid trichoepithelioma occurring in mother and daughter: Case report显示文摘Multiple familial trichoepithelioma is a rare autosomal dominant skin disease that presents as many small tumours predominantly on the face. They are benign skin tumours of hair follicle differentiation. We report multiple familial trichoepithelioma occurring in two members of the same family.Yu Chunshui Zhou Jingguo Liu Jianping Su Jiangwei 2009Journal of Medical Colleges of PLA(China)2009,24,5:0
20Infectivity of SARS-CoV-2 and protection against reinfection in rats显示文摘DEAR EDITOR,The severe acute respiratory syndrome coronavirus 2(SARS-CoV-2) pandemic remains an important global public health issue. In this study, we unexpectedly found that wildtype Sprague-Dawley(SD) rats can be infected with the SARS-CoV-2 prototype. Our results showed direct experimental evidence of the infectivity of SARS-CoV-2 infection, subsequent pathogenicity, and protection against reinfection in rats.Dandan Yu Yanghaopeng Long Ling Xu Jian-Bao Han Jiawei Xi Jianlin Xu Lu-Xiu Yang Xiao-Li Feng Qing-Cui Zou Wang Qu Jiangwei Lin Ming-Hua Li Yong-Gang Yao 2022Zoological Research2022,43,6:0
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