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73篇 您的检索式:作者名="LIU Yuqiang"
    题名 作者 年代 出处 被引量
1Interactive effects of soil temperature and moisture on soil N mineralization in a Stipa krylovii grassland in Inner Mongolia, China显示文摘Determining soil N mineralization response to soil temperature and moisture changes is challenging in the field due to complicated effects from other factors. In the laboratory, N mineralization is highly dependent on temperature, moisture and sample size. In this study, a laboratory incubation experiment was carefully designed and conducted under controlled conditions to examine the effects of soil temperature and moisture on soil N mineralization using soil samples obtained from the Stipa krylovii grassland in Inner Mongolia, China. Five temperature(i.e. 9°C, 14°C, 22°C, 30°C and 40°C) and five moisture levels(i.e. 20%, 40%, 60%, 80% and 100% WHC, where WHC is the soil water holding capacity) were included in a full-factorial design. During the 71-day incubation period, microbial biomass carbon(MBC), ammonium nitrogen(NH4 +-N) and nitrate nitrogen(NO3--N) were measured approximately every 18 days; soil basal respiration for qCO2 index was measured once every 2 days(once a week near the end of the incubation period). The results showed that the mineral N production and net N mineralization rates were positively correlated with temperature; the strongest correlation was observed for temperatures between 30°C and 40°C. The relationships between moisture levels and both the mineral N production and net N mineralization rates were quadratic. The interaction between soil temperature and moisture was significant on N mineralization, i.e. increasing temperatures(moisture) enhanced the sensitivity of N mineralization to moisture(temperature). Our results also showed a positive correlation between the net nitrification rate and temperature, while the correlation between the NH4 +-N content and temperature was insignificant. The net nitrification rate was negatively correlated with high NH4 +-N contents at 80%–100% WHC, suggesting an active denitrification in moist conditions. Moreover, qCO2 index was positively correlated with temperature, especially at 80% WHC. With a low net nitrification rate and high soil basal respiration rate, it was likely that the denitrification concealed the microbial gross mineralization activity; therefore, active soil N mineralization occurred in 60%–80% WHC conditions.Yue LI YingHui LIU YaLin WANG Lei NIU Xia XU YuQiang TIAN 2014Journal of Arid Land2014,6,5:12
2Grey matter volume abnormalities in patients with bipolar I depressive disorder and unipolar depressive disorder:a voxelbased morphometry study显示文摘Bipolar disorder and unipolar depressive disorder(UD) may be different in brain structure. In the present study,we performed voxel-based morphometry(VBM) to quantify the grey matter volumes in 23 patients with bipolar I depressive disorder(BP1) and 23 patients with UD,and 23 age-,gender-,and educationmatched healthy controls(HCs) using magnetic resonance imaging. We found that compared with the HC and UD groups,the BP1 group showed reduced grey matter volumes in the right inferior frontal gyrus and middle cingulate gyrus,while the UD group showed reduced volume in the right inferior frontal gyrus compared to HCs. In addition,correlation analyses revealed that the grey matter volumes of these regions were negatively correlated with the Hamilton depression rating scores. Taken together,the results of our study suggest that decreased grey matter volume of the right inferior frontal gyrus is a common abnormality in BP1 and UD,and decreasedgrey matter volume in the right middle cingulate gyrus may be specifi c to BP1.Yi Cai Jun Liu Li Zhang Mei Liao Yan Zhang Lifeng Wang Hongjun Peng Zhong He Zexuan Li Weihui Li Shaojia Lu Yuqiang Ding Lingjiang Li 2015Neuroscience Bulletin2015,31,1:11
3Variations in the Lower Level of the PBL Associated with the Yellow Sea Fog-New Observations by L-Band Radar显示文摘The Chinese east coastal areas and marginal seas are foggy regions. The development of effective forecasting methods rests upon a comprehensive knowledge of the fog phenomena. This study provides new observations associated with the sea fogs over the northwestern Yellow Sea by means of L-band radar soundings with a high vertical resolution of 30 m. The monthly temperature lapse rate, the Richardson Numbers, and the humidity show obvious seasonal variations in the lower level of the planetary boundary layer (PBL) that are related to the onset, peak and end of the Yellow Sea fog season. The typical pattern of stratification for the sea fog season in the northwestern Yellow Sea is that a stable layer of about 400 m thick caps a 150 m conditionally unstable layer. Besides, the differences between fogs and stratus clouds in terms of humidity, turbulence and temperature are analyzed, which is of significance for sea fog forecast and detection by satellites. The thickness of the sea fogs varies in different stages of the fog season, and is associated with the temperature inversion. The numerical simulation proves that the seasonal variations obtained by the radar well represent the situations over the Yellow Sea.ZHANG Suping REN Zhaopeng LIU Jingwu YANG Yuqiang WANG Xingong 2008Journal of Ocean University of China2008,7,4:10
4Integrated solar capacitors for energy conversion and storage显示文摘太阳能是最流行的干净精力来源之一并且是一种有希望的选择完成现代社会的增加的精力要求。太阳能电池长在为与高力量变换效率和低费用从日光收获精力的集中的研究注意下面。然而,光电的设备的力量产量由于太阳的放射的断断续续的本能受不了变化。作为自我驱动的系统集成太阳能电池和 energystorage 设备可以通过精力产量的电和操作的同时的存储解决这个问题。这评论与 supercapacitors 在新产生的太阳能电池的集成总结研究进步,与结构,材料,表演,和新设计特征上的强调。当前的挑战和未来前景与在这个领域里扩展研究和开发的目的被讨论。Ruiyuan Liu Yuqiang Liu Haiyang Zou Tao Song Baoquan Sun 2017Nano Research2017,10,5:7
5Effect of rainfall interannual variability on the biomass and soil water distribution in a semiarid shrub community显示文摘The dynamics of biomass and soil moisture in semiarid land is driven by both the current rainfall and the ecosystem memory.Based on a meta-analysis of existing experiments,an ecosystem model was used to calculate the effect of the rainfall interannual variability on the pattern of biomass and soil moisture in a shrub community.It was found that rainfall interannual variability enabled shrubs to be more competitive than grasses,and to maintain the dominant role over a longer time.The rainfall interannual variability resulted in complex soil moisture dynamics.The soil water recharge in wet years alternated with discharge in drought years.LIU JunShanXU XiaZHANG Yong,TIAN YuQiang & GAO Qiong State Key Laboratory of Earth Surface Processes and Resource Ecology,College of Resources Science & Technology,Beijing Normal University,Beijing 100875,China 2010Science China(Life Sciences)2010,53,6:7
6Nondestructive 3D Image Analysis Pipeline to Extract Rice Grain Traits Using X-Ray Computed Tomography显示文摘The traits of rice panicles play important roles in yield assessment,variety classification,rice breeding,and cultivation management.Most traditional grain phenotyping methods require threshing and thus are time-consuming and labor-intensive;moreover,these methods cannot obtain 3D grain traits.In this work,based on X-ray computed tomography,we proposed an image analysis method to extract twenty-two 3D grain traits.After 104 samples were tested,the R^(2) values between the extracted and manual measurements of the grain number and grain length were 0.980 and 0.960,respectively.We also found a high correlation between the total grain volume and weight.In addition,the extracted 3D grain traits were used to classify the rice varieties,and the support vector machine classifier had a higher recognition accuracy than the stepwise discriminant analysis and random forest classifiers.In conclusion,we developed a 3D image analysis pipeline to extract rice grain traits using X-ray computed tomography that can provide more 3D grain information and could benefit future research on rice functional genomics and rice breeding.Weijuan Hu Can Zhang Yuqiang Jiang Chenglong Huang Qian Liu Lizhong Xiong Wanneng Yang Fan Chen 2020Plant Phenomics2020,2,1:6
7Magnetic and microwave absorption properties of Ni_(1-x)Zn_xFe_2O_4 nanocrystalline synthesized by sol-gel method显示文摘Ni1-xZnxFe2O4(0≤x≤1,in steps of 0.1) nanocrystallines were synthesized by sol-gel route.The doping effects of zinc on structural,magnetic and microwave absorption properties were investigated in detail.X-ray diffraction(XRD) results show that all the samples are single-phase spinel structure.The magnetic and microwave absorption properties are strongly dependent on the zinc content,which can be understood in terms of the cations redistribution in spinel tetrahedral and octahedral sites with the increase of zinc content.The magnetic measurement shows the antiferromagnetic nature of the samples for x=0.9 and x=1.0.The saturation magnetization reaches the maximum of 3.35μB/f.u.at x=0.5.The optimal reflection loss(RL) of-29.6 dB is found at 6.5 GHz for an absorber thickness of 5 mm.The RL values exceeding 10 dB are obtained for the absorber in the range of 3.9-8.9 GHz.These Ni1-xZnxFe2O4 nanocrystallines may be attractive candidates for electromagnetic wave absorption materials.ZHANG Min LIU QiangChun ZI ZhenFa DAI YuQiang ZHU XueBin SUN YuPing DAI JianMing 2013Science China(Technological Sciences)2013,56,1:4
8Comparison of soil physico-chemical properties under different land-use and cover types in northeastern China's Horqin Sandy Land显示文摘The Horqin Sandy Land of northeastern China was originally a grassland with plenty of water and lush vegetation dominated by palatable grass species along with sparsely scattered woody species. However, it has experienced severe desertification in recent decades due to its fragile ecology together with inappropriate human activities. Currently, the landscape of the Horqin Sandy Land is dominated by irrigated croplands and sand dunes with different degrees of vegetation cover, as the region has become the most important part of the semiarid agro-pastoral ecotone of northern China. In this study, we compared soil physical and chemical properties under different land-use and cover types(irrigated cropland, rainfed cropland, sandy grassland, fixed dunes, and mobile dunes). We found that soil particle size distribution; organic C, total N, and total mineral element, microelement, and available microelement and nutrient contents; p H; CEC; and bulk density differed significantly among the land-use and cover types. In general, soil quality was highest in the cropland, intermediate in the sandy grassland, and lowest in the dunes. The most important soil quality attribute, soil organic carbon(SOC) storage, decreased in the following order: irrigated cropland(5,699 g/m^2) > sandy grassland(3,390 g/m^2) > rainfed cropland(2,411 g/m^2) > fixed dunes(821 g/m^2) > mobile dunes(463 g/m^2). SOC was significantly positively correlated with a large proportion of the other soil physico-chemical parameters. Our results suggest that the key issue in restoration of the degraded soils will be to increase SOC storage, which would also create a high potential for sequestering soil C in desertified areas of the Horqin Sandy Land.YuQiang Li JianPeng Zhang XueYong Zhao TongHui Zhang YuLin Li XinPing Liu YinPing Chen 2016Research in Cold and Arid Regions2016,8,6:4
9Recent progress in organic solar cells(PartⅡdevice engineering)显示文摘1 Introduction Organic solar cells(OSCs)belong to a multidisciplinary field composed of chemistry,materials science,physics,engineering,etc.For a better reviewing of this field,we briefly divide the research field of OSCs into two parts:material science and device engineering.In our previous review,the material science part of OSCs,including conjugated polymer donors and acceptors,small molecular donors and acceptors.Yahui Liu Bowen Liu Chang-Qi Ma Fei Huang Guitao Feng Hongzheng Chen Jianhui Hou Lingpeng Yan Qingya Wei Qun Luo Qinye Bao Wei Ma Wei Liu Weiwei Li Xiangjian Wan Xiaotian Hu Yanchun Han Yaowen Li Yinhua Zhou Yingping Zou Yiwang Chen Yuqiang Liu Lei Meng Yongfang Li Yongsheng Chen Zheng Tang Zhicheng Hu Zhi-Guo Zhang Zhishan Bo 2022Science China Chemistry2022,65,8:3
10Long noncoding RNA(lncRNA)HOTAIR:Pathogenic roles and therapeutic opportunities in gastric cancer显示文摘Gastric cancer is one of the first malignant cancers in the world and a large number of people die every year due to this disease.Many genetic and epigenetic risk factors have been identified that play a major role in gastric cancer.HOTAIR is an effective epigenetic agent known as long noncoding RNA(lncRNA).HOTAIR has been described to have biological functions in biochemical and cellular processes through interactions with many factors,leading to genomic stability,proliferation,survival,invasion,migration,metastasis,and drug resistance.In the present article,we reviewed the prognostic value of the molecular mechanisms underlying the HOTAIR regulation and its function in the development of Gastric Cancer,whereas elucidation of HOTAIR–protein and HOTAIR–DNA interactions can be helpful in the identification of cancer processes,leading to the development of potential therapeutic strategies.Wencheng Kong Guang Yin Sixin Zheng Xinchun Liu Akao Zhu Panpan Yu Jian Zhang Yuqiang Shan Rongchao Ying Huicheng Jin 2022Genes & Diseases2022,9,5:3
11HYSYS Automation and Its Application on Evaluation of Plate Heat Exchanger显示文摘当为 multicomponent 混合物模仿或设计板热 exchangers 时,大多数设计者经常与怎么选择或估计物理性质参数和希望有能被采用的一个可靠数据库上的问题被困惑。商业代码 HYSYS 供应为 them.This 工作的超过 1500 种纯物质和超过 16 000 个二进制系数上的物理性质包裹简短基于在内部板热 exchanger 模拟代码和 HYSYS 包裹之间的微软部件对象模型(COM ) 介绍了一个有效通讯接口。一个定做的 HYSYS-COM 接口的应用程序显示出高效率,例如为评估每条过程溪流的性质需要的时间的重要减小。这个自动化方法能方便地被扩大为象热转移,列,和另外的设备那样的任何特定的操作设备推进优化学习。Dai Yuqiang Liu Wenwei Wang Shaomin Hu Dapeng 2008China Petroleum Processing & Petrochemical Technology2008,10,3:3
12Study on gas and wave in a receiving tube显示文摘气体和波浪是在一个收到的试管的运动在现在的纸数字地并且试验性地被调查。结果显示出那,当气体在稳定的繁殖以后严厉地被注入收到的试管,然后落下,接触脸的速度很快升起。然而,在试管的波浪的速度是几乎线性的,波浪能在收到的试管的靠近的结束被反映。与入口压力增加,波浪的速度和接触脸的稳定的速度也增加。当波浪打扫气体,有明显的热效果。反映的波浪能在开的结束加热令人疲乏不堪的气体。作为一个吸收器,在试管罐头的扩展和一位精神病医生几乎完全吸收反映的波浪。Dapeng Hu Shengtao Chen Jun Yang Zuzhi Chen Yuqiang Dai Che Zhu Runjie Liu 2008Journal of Thermal Science2008,17,2:2
13siRNA of ADAM17 gene induces apoptosis,proliferation inhibition and enhances the effects of genistein on HepG2 cells显示文摘Objective:To investigate the effects of siRNA of ADAM17 gene and genistein on apoptosis and the inhibition of proliferation in HepG2 cells in an attempt to seek an effective therapy for hepatocellular carinoma. Methods:Cells were divided into control groups and experimental groups and siRNA was used to silence the ADAM17 gene, alone and in combination with genistein. Cells were harvested at several time periods and assessed for proliferation and apoptosis. Proliferation was assayed by MTT at 24, 48, 72 and 96 hours following treatment and apoptosis was assessed by flow cytometric analysis at 48 hours. Results:In siRNA groups, proliferation of cells was significantly inhibited compared to the control groups at 24, 48 and 72 hours(P < 0.05), and apoptosis was significantly increased at 48 hours(P < 0.01); In genistein groups, proliferation was inhibited at 24, 48, 72 and 96 hours, and the apoptosis ratio was significantly increased at 48 hours(P < 0.01); while in the groups that received the combination of siRNA transfection and genistein treatment, there was a further significant decrease of proliferation and increase in apoptosis compared with either treatment alone. Conclusion:The ADAM17 gene could be an effective target, and genistein could be a useful agent, in the treatment of hepatocellular carcinoma. siRNA of ADAM17 gene and genistein both inhibited HepG2 cells proliferation and promoted apoptosis, and further, the combination of these treatments had a greater effect than either treatment alone.Yongcun Liu Zuoren Wang Yuqiang Ji Feng Li 2009Journal of Nanjing Medical University2009,23,2:2
14Study on Wall Temperature Distribution of Oscillating Tube显示文摘The wall temperature distribution and heat transfer process of the oscillating tube have been investigated in thispaper using both numerical simulation and experimental method. The wall temperature of oscillating tube increasesrapidly in the inlet and then decreases slowly, moreover, the rally phenomenon of wall temperature nearthe closed end is observed. With the increase of jet flow frequency, the highest wall temperature increases and thelocation of that moves towards the inlet. The velocity of pressure wave in the oscillating tube almost remainsconstant even its intensity changes. The quantity of heat transfer between the gas and inner wall of the oscillatingtube determines the wall temperature of every location, and the pressure wave disturbance can cause the heattransfer quantity change. Each pressure wave has its own disturbance range. The wall temperature distribution canbe explained by the change of pressure wave intensity and its disturbance time. Besides, the step and rally of walltemperature are discussed, which shows that the conditions of heat transfer can be improved due to intersection orreflection of pressure waves.Dapeng HU Peiqi LIU Wenjing ZHAO Che ZHU Yudong WANG Yuqiang DAI Jiupeng ZOU 2009Journal of Thermal Science2009,18,3:2
153-Oxodapagliflozin as a Potent and Highly Selective SGLT2 Inhibitor for the Treatment of Type 2 Diabetes显示文摘ZHANG Shuo WANG Yuli LIU Wei XIE Yafei LIU Yuqiang XU Weiren TANG Lida WANG Jianwua ZHAO Guilong 2014Chemical Research in Chinese Universities2014,30,5:2
16An Information Fusion Model of Innovation Alliances Based on the Bayesian Network显示文摘To solve the problem of information fusion from multiple sources in innovation alliances, an information fusion model based on the Bayesian network is presented. The multi-source information fusion process of innovation alliances was classified into three layers, namely, the information perception layer, the feature clustering layer,and the decision fusion layer. The agencies in the alliance were defined as sensors through which information is perceived and obtained, and the features were clustered. Finally, various types of information were fused by the innovation alliance based on the fusion algorithm to achieve complete and comprehensive information. The model was applied to a study on economic information prediction, where the accuracy of the fusion results was higher than that from a single source and the errors obtained were also smaller with the MPE less than 3%, which demonstrates the proposed fusion method is more effective and reasonable. This study provides a reasonable basis for decision-making of innovation alliances.Jun Xia Yuqiang Feng Luning Liu Dongjun Liu 2018Tsinghua Science and Technology2018,23,3:2
17Feasibility of Intermediate Fluid Vaporizer with Spiral Wound Tubes显示文摘A novel intermediate fluid vaporization (IFV) technology for LNG re-gasification process with spiral-wound heat exchanging tubes is proposed. The new IFV project combines the advantage of running the shell and tube heat exchangers at high pressure with the advantage of compact space of heat exchangers. Thermal analysis on the two processes of forced convection and vaporization type heat transfer in the spiral wound tubes and vapor condensation /re-boiling type of heat transfer via intermediate fluid in shell side shows the feasibility of this promising technology.Liu Fengxia Dai Yuqiang Wei Wei Zou Jiupeng Zhu Che Dong Chao Hu Dapeng 2013China Petroleum Processing & Petrochemical Technology2013,15,1:2
18Design, Synthesis and Biological Activity of Tetrazole-bearing Uric Acid Transporter 1 Inhibitors显示文摘CAI Wenqing LIU Wei XIE Yafei WU Jingwei LIU Yuqiang LIU Changying XU Weiren TANG Lida WANG Jianwu ZHAO Guilong 2017Chemical Research in Chinese Universities2017,33,1:2
19Organic additive engineering toward efficient perovskite light-emitting diodes显示文摘Perovskite materials with excellent optical and electrical properties are promising for light-emitting diodes.In the field of perovskite light-emitting diodes(PeLEDs),organic materials additive engineering has been proved to be an effective scheme for enhancing efficiency and stability in PeLEDs.Most impressively,the reported external quantum efficiency of PeLEDs based on perovskite-organic composite has reached over 20%.Herein,we will review the important progress of the organic materials'additive-modified PeLEDs and discuss the remaining problems and challenges and the key research direction in the near future.Yuqiang Liu Luis K.Ono Yabing Qi 2020InfoMat2020,2,6:2
20Induction of the liver cancer-down-regulated long noncoding RNA uc002mbe.2 mediates trichostatin-induced apoptosis of liver cancer cells显示文摘Hui Yang Yun Zhong Hui Xie XiaoBo Lai Miqing Xu Yuqiang Nie Shiming Liu Yu-Jui Yvonne Wan 2013Biochemical Pharmacology2013,,12:2
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