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57篇 您的检索式:作者名="ZHAO Yunxia"
    题名 作者 年代 出处 被引量
1Quantitative estimation of the impact of precipita- tion and human activities on runoff change of the Huangfuchuan River Basin显示文摘在特别在干旱、半干旱的区域的世界上的一些河的流量与全球或地区性的气候变化显著地减少了并且提高了人的活动。在北中国的干旱、半干旱的区域的流量减少在生计和生态学带了严重问题。揭示变化特征,流量的趋势和他们的影响因素是为排水盆管理的重要科学问题。这研究的目的是分析流量和份量上的趋势估计的变化到流量的降水和人的活动的贡献在 19602008 基于测量数据在 Huangfuchuan 河盆变化。为积聚的流量变化的 1979 和 1998 的二个变化点(拐弯处年) ,和一个变化 1979 指因为积聚的降水变化用积聚的异例分析的方法被识别。在在 19601979, 19801997 和 19982008 并且在在 19601979 和 19802008 的年和积聚的降水之间的年和积聚的流量之间的线性关系被适合。积聚的数量(SCRAQ ) 的斜坡变化比率的一个新方法被提出并且在这研究使用了计算不同因素的贡献到流量变化。作为基础时期,降水的贡献率和人的活动带 19601979 去减少的流量分别地在 19982008 在 19801997,和 16.81% 和 83.19% 是 36.43% 和 63.57% 。结果将在排水盆管理起一个重要作用。而且, SCRAQ 的新方法能被不同因素在干旱、半干旱的区域的河盆在流量变化和影响的量的评估使用。WANG Suiji YAN Yunxia YAN Ming ZHAO Xiaokun 2012Journal of Geographical Sciences2012,22,5:25
2The HuangZaoSi Maize Genome Provides Insights into Genomic Variation and Improvement History of Maize显示文摘Maize is a globally important crop that was a classic model plant for genetic studies. Here, we report a 2.2 Gb draft genome sequence of an elite maize line, HuangZaoSi (HZS). Hybrids bred from HZS-improved lines (HILs) are planted in more than 60% of maize fields in China. Proteome clustering of six completed sequeneed maize genomes show that 638 proteins fall into 264 HZS-specific gene families with the majority of contributions from tandem duplication events. Resequencing and comparative analysis of 40 HZSrelated lines reveals the breeding history of HILs. More than 60% of identified selective sweeps were clustered in identity.by.descent conserved regions, and yield-related genes/QTLs were enriched in HZS characteristic selected regions. Furthermore, we dem on strated that HZS-specific family genes were not uniformly distributed in the genome but enriched in improvement/function.related genomic regions. This study provides an important and novel resource for maize genome research and expands our knowledge on the breadth of genomic variation and improvement history of maize.Chunhui Li Wei Song Yingfeng Luo Shenghan Gao Ruyang Zhang Zi Shi Xiaqing Wang Ronghuan Wang Fengge Wang Jidong Wang Yanxin Zhao Aiguo Su Shuai Wang Xin Li Meijie Luo Shuaishuai Wang Yunxia Zhang Jianrong Ge Xinyu Tan Ye Yuan Xiaochun Bi Hang He Jianbing Yan Yuandong Wang Songnian Hu Jiuran Zhao 2019Molecular Plant2019,12,3:15
3Biosynthesis of Biocompatible Cadmium Telluride Quantum Dots Using Yeast Cells显示文摘We demonstrate a simple and efficient biosynthesis method to prepare easily harvested biocompatible cadmium telluride(CdTe)quantum dots(QDs)with tunable fluorescence emission using yeast cells.Ultraviolet-visible(UV-vis)spectroscopy,photoluminescence(PL)spectroscopy,X-ray diffraction(XRD),and transmission electron microscopy(TEM)confirm that the CdTe QDs are formed via an extracellular growth and subsequent endocytosis pathway and have size-tunable optical properties with fluorescence emission from 490 to 560 nm and a cubic zinc blende structure with good crystallinity.In particular,the CdTe QDs with uniform size(2-3.6 nm)are protein-capped,which makes them highly soluble in water,and in situ bio-imaging in yeast cells indicates that the biosynthesized QDs have good biocompatibility.This work provides an economic and environmentally friendly approach to synthesize highly fluorescent biocompatible CdTe QDs for bio-imaging and bio-labeling applications.Haifeng Bao Na Hao Yunxia Yang Dongyuan Zhao 2010Nano Research2010,3,7:11
4Fe/Fe2O3 nanoparticles anchored on Fe-N-doped carbon nanosheets as bifunctional oxygen electrocatalysts for rechargeable zinc-air batteries显示文摘有高催化的活动和稳定性玩的 Electrocatalysts 在有希望的可更新的精力技术的一个关键角色,例如燃料房间和金属空气电池。这里,我们报导 Fe/Fe 2 O 3 nanoparticles 在 Fe-N-doped 碳 nanosheets 上抛锚了(Fe/Fe 2 导出壳的做 N 的碳 nanodots 由一条简单热分解途径面对 FeCl 3 作为碳和氮采购的 O 3@Fe-N-C) 使用虾。Fe/Fe 2 O 3@Fe-N-C 在 1,000 的热分解温度获得了 ??????????? ″ ? 猼灵资 ? ??( ??Yipeng Zang Haimin Zhang Xian Zhang Rongrong Liu Shengwen Liu Guozhong Wang Yunxia Zhang Huijun Zhao 2016Nano Research2016,9,7:10
5Meaningful comparison of photocatalytic properties of {001} and {101} faceted anatase TiO2 nanocrystals显示文摘The facet-dependent photocatalytic performance of TiO_2 nanocrystals has been extensively investigated due to their promising applications in renewable energy and environmental fields. However, the intrinsic distinction in the photocatalytic oxidation activities between the {001}and {101} facets of anatase TiO_2 nanocrystals is still unclear and under debate. In this work, a simple photoelectrochemical method was employed to meaningfully quantify the intrinsic photocatalytic activities of {001} and{101} faceted TiO_2 nanocrystal photoanodes. The effective surface areas of photoanodes with different facets were measured based on the monolayer adsorption of phthalic acid on TiO_2 photoanode surface by an ex situ photoelectrochemical method, which were used to normalize the photocurrents obtained from different faceted photoanodes for meaningful comparison of their photocatalytic activities. The results demonstrated that the {001} facets of anatase TiO_2 nanocrystals exhibited much better photocatalytic activity than that of {101} facets of anatase TiO_2 nanocrystals toward photocatalytic oxidation of water and organic compounds with different functional groups(e.g.,–OH, –CHO, –COOH). Furthermore, the instantaneous kinetic constants of photocatalytic oxidation of pre-adsorbates on {001} faceted anatase TiO_2 photoanode are obviously greater than those obtained at {101} faceted anatase TiO_2 photoanode, further verifying the higher photocatalytic activity of {001} facets of anatase TiO_2.This work provided a facile photoelectrochemical method to quantitatively determine the photocatalytic oxidation activity of specific exposed crystal facets of a photocatalyst, which would be helpful to uncover and meaningfully compare the intrinsic photocatalytic activities of different exposed crystal facets of a photocatalyst.Yang Lu Yipeng Zang Haimin Zhang Yunxia Zhang Guozhong Wang Huijun Zhao 2016Science Bulletin2016,61,13:8
6Alkali metal cation doping of metal-organic framework for enhancing carbon dioxide adsorption capacity显示文摘Metal-organic frameworks(MOFs) have attracted much attention as adsorbents for the separation of CO2 from flue gas or natural gas. Here,a typical metal-organic framework HKUST-1(also named Cu-BTC or MOF-199) was chemically reduced by doping it with alkali metals(Li, Na and K) and they were further used to investigate their CO2 adsorption capacities. The structural information, surface chemistry and thermal behavior of the prepared adsorbent samples were characterized by X-ray powder diffraction(XRD), thermo-gravimetric analysis(TGA)and nitrogen adsorption-desorption isotherm analysis. The results showed that the CO2 storage capacity of HKUST-1 doped with moderate quantities of Li+, Na+and K+, individually, was greater than that of unmodified HKUST-1. The highest CO2 adsorption uptake of 8.64mmol/g was obtained with 1K-HKUST-1, and it was ca. 11% increase in adsorption capacity at 298 K and 18 bar as compared with HKUST-1. Moreover, adsorption tests showed that HKUST-1 and 1K-HKUST-1 displayed much higher adsorption capacities of CO2 than those of N2. Finally, the adsorption/desorption cycle experiment revealed that the adsorption performance of 1K-HKUST-1 was fairly stable, without obvious deterioration in the adsorption capacity of CO2 after 10 cycles.Yan Cao Yunxia Zhao Fujiao Song Qin Zhong 2014Journal of Energy Chemistry2014,23,4:6
7Capture of carbon dioxide from flue gas on TEPA-grafted metal-organic framework Mg_2 (dobdc)显示文摘Carbon dioxide(CO2) adsorption on a standard metal-organic framework Mg2(dobdc)(Mg/DOBDC or Mg-MOF-74) and a tetraethylenepentamine(TEPA) modified Mg2(dobdc)(TEPA-Mg/DOBDC) were investigated and compared. The structural information, surface chemistry and thermal behavior of the adsorbent samples were characterized by X-ray powder difraction(XRD), infrared spectroscopy(IR), thermogravimetric analysis(TGA) and nitrogen adsorption-desorption isotherm analysis. CO2adsorption capacity was measured by dynamic adsorption experiments with N2-CO2mixed gases at 60°C. Results showed that the CO2adsorption capacity of Mg/DOBDC was significantly improved after amine modification, with an increase from 2.67 to 6.06 mmol CO2/g adsorbent.Moreover, CO2adsorption on the TEPA-Mg/DOBDC adsorbent was promoted by water vapor, and the adsorption capacity was enhanced to 8.31 mmol CO2/g absorbent. The adsorption capacity of the TEPA-Mg/DOBDC adsorbent dropped only 3% after 5consecutive adsorption/desorption cycles. Therefore, this kind of adsorbent can be considered as a promising material for the capture of CO2from flue gas.Yan Cao Fujiao Song Yunxia Zhao Qin Zhong 2013Journal of Environmental Sciences2013,25,10:5
8Skeletal loading regulates breast cancer-associated osteolysis in a loading intensity-dependent fashion显示文摘Osteocytes are mechanosensitive bone cells, but little is known about their effects on tumor cells in response to mechanical stimulation. We treated breast cancer cells with osteocyte-derived conditioned medium(CM) and fluid flow-treated conditioned medium(FFCM) with 0.25 Pa and 1 Pa shear stress. Notably, CM and FFCM at 0.25 Pa induced the mesenchymal-to-epithelial transition(MET), but FFCM at 1 Pa induced the epithelial-to-mesenchymal transition(EMT). This suggested that the effects of fluid flow on conditioned media depend on flow intensity. Fluorescence resonance energy transfer(FRET)-based evaluation of Src activity and vinculin molecular force showed that osteopontin was involved in EMT and MET switching. A mouse model of tumorinduced osteolysis was tested using dynamic tibia loadings of 1, 2, and 5 N. The low 1 N loading suppressed tumor-induced osteolysis, but this beneficial effect was lost and reversed with loads at 2 and 5 N, respectively. Changing the loading intensities in vivo also led to changes in serum TGFβ levels and the composition of tumor-associated volatile organic compounds in the urine.Collectively, this study demonstrated the critical role of intensity-dependent mechanotransduction and osteopontin in tumorosteocyte communication, indicating that a biophysical factor can tangibly alter the behaviors of tumor cells in the bone microenvironment.Yao Fan Aydin Jalali Andy Chen Xinyu Zhao Shengzhi Liu Meghana Teli Yunxia Guo Fangjia Li Junrui Li Amanda Siegel Lianxiang Yang Jing Liu Sungsoo Na Mangilal Agarwal Alexander G.Robling Harikrishna Nakshatri Bai-Yan Li Hiroki Yokota 2020Bone Research2020,8,2:4
9Identification of a locus associated with genic male sterility in maize via EMS mutagenesis and bulked-segregant RNA-seq显示文摘Genic male sterility(GMS) is one of the most important resources for exploiting heterosis in crop breeding, so that identifying genomic loci regulating GMS is desirable. However, many regulatory genes controlling GMS have not yet been characterized in maize, owing partly to a lack of genetic materials. We generated a recessive male-sterile maize mutant in the Jing 724 genetic background via ethyl methanesulfonate treatment, and found the male sterility to be due to a single gene mutation. Bulk-segregant RNA sequencing of three replicates indicated that one genomic region located at the end of chromosome 4 was associated with the observed mutant phenotype. Among genes with nonsynonymous mutations,Zm00001 d053895(bHLH51) showed abolished expression in the sterile bulks and was annotated as a bHLH transcription factor orthologous to Arabidopsis AMS, suggesting an association with the male sterility of the mutant. Kompetitive Allele-Specific PCR assays further validated the exclusive correlation of male sterility with the single C-to-T mutation in the fifth exon. The new maize mutant and the potential SNP locus provide novel genetic material for investigating the molecular mechanism underlying tapetal development and may facilitate the improvement of hybrid production systems.Zi Shi Wen Ren Yanxin Zhao Xiaqing Wang Ruyang Zhang Aiguo Su Shuai Wang Chunhui Li Jiarong Wang Shuaishuai Wang Yunxia Zhang Yulong Ji Wei Song Jiuran Zhao 2021The Crop Journal2021,9,6:4
10Adsorption of carbon dioxide on amine-modified TiO_2 nanotubes显示文摘TiO2 nanotubes (TiNT) were prepared by a hydrothermal treatment and modified by three kinds of amines,namely ethylenediamine,polyetherimide and tetraethylenepentamine (TEPA),to study their CO2 adsorption properties from gas streams.The resultant samples were characterized by X-ray diffraction,transmission electron microscopy,and infrared spectroscopy,as well as low temperature N 2 adsorption.CO2 capture was investigated in a dynamic packed column at 30℃.TEPA-modified TiO2 nanotubes showed the highest adsorption capacity of 167.64 mg/g because it had the highest amino-group content among the three amines.CO2 fixation on TiNT impregnated by TEPA was investigated at 30,50,and 70℃,and the adsorption capacity increased slightly with temperature.Following the adsorption step,the sorbents were regenerated by temperature programmed desorption,and the TiNT-TEPA sample,as CO2 sorbent,was found to be readily regenerated and energy-efficient.The cycle test also revealed that the TiNT-TEPA adsorbent is fairly stable,with only a 5% drop in the adsorption capacity after 10 adsorption/desorption cycles.In addition,the CO2 adsorption behavior was investigated with the deactivation model,and which showed an excellent prediction for the TiNT-TEPA breakthrough curves.Fujiao Song Yunxia Zhao Qin Zhong 2013Journal of Environmental Sciences2013,25,3:3
11Identification of Biocontrol Strain HJX1 and Determination of Its Antifungal Spectrum显示文摘A biocontrol strain HJX1,which had good inhibitory effect against Fusarium oxysporum f. sp. cubense,was identified as Bacillus subtilis based on traditional morphology,16 S rRNA gene sequence and fatty acid profiles. The sequence of 16 S rRNA gene had 99% homology to B. subtilis according to the DNA fragment of 1 521 bp amplified with a pair of universal primers,P0 and P6,of bacteria. Confront culture with pathogenic fungi showed that this strain had good inhibitory effect against 10 pathogenic fungi.Zhao Gengfeng Qiu Yimin Zhang Yunxia Xiong Guoru 2014Plant Diseases and Pests2014,5,3:2
12A microfluidic approach for synchronous and nondestructive study of the permeability of multiple oocytes显示文摘Investigation of oocyte membrane permeability plays a crucial role in fertility preservation,reproductive medicine,and reproductive pharmacology.However,the commonly used methods have disadvantages such as high time consumption,low efficiency,and cumbersome data processing.In addition,the developmental potential of oocytes after measurement has not been fully validated in previous studies.Moreover,oocytes can only maintain their best status in vitro within a very limited time.To address these limitations,we developed a novel multichannel microfluidic chip with newly designed micropillars that provide feasible and repeatable oocyte capture.The osmotic responses of three oocytes at different or the same cryoprotectant(CPA)concentrations were measured simultaneously,which greatly improved the measurement efficiency.Importantly,the CPA concentration dependence of mouse oocyte membrane permeability was found.Moreover,a neural network algorithm was employed to improve the efficiency and accuracy of data processing.Furthermore,analysis of fertilization and embryo transfer after perfusion indicated that the microfluidic approach does not damage the developmental potential of oocytes.In brief,we report a new method based on a multichannel microfluidic chip that enables synchronous and nondestructive measurement of the permeability of multiple oocytes.Zhongrong Chen Kashan Memon Yunxia Cao Gang Zhao 2020Microsystems & Nanoengineering2020,6,1:2
13Analysis of Interactions Among the Barriers to Energy Saving in China 显示文摘WangGuoHong Wang YunXia Zhao Tao 2008Energy Policy2008,36,:1
14Decentralized cognitive MAC for opportunistic spectrum access in Ad Hoc networks: a POMDP framework 显示文摘ZHAO Qing TONG Lang SWAMI A CHEN Yunxia 2007IEEE Journal on Selected Areas in Communications2007,25,3:1
15On the Lifetime of Wireless Sensor Networks显示文摘Chen Yunxia Zhao Qing 2005IEEE Communications Letters2005,9,11:1
16Joint designand separation principle for opportunistic spectrum access in thepresence of sensing errors 显示文摘Yunxia Chen Qing Zhao Ananthram Swami 2008IEEE Transactions on Informa-tion Theory2008,54,5:1
17Analysis of interactions among the barriers to energy saving in China 显示文摘Wang Guohong Wang Yunxia Zhao Tao 2008Energy Policy2008,,36:1
18A joint call for actions to advance taxonomy in China显示文摘Taxonomy plays an important role in understanding the origin, evolution, and ecological functionality of biodiversity. There are large number of unknown species yet to be described by taxonomists, which together with their ecosystem services cannot be effectively protected prior to description. Despite this, taxonomy has been increasingly underrated insufficient funds and permanent positions to retain young talents. Further, the impact factordriven evaluation systems in China exacerbate this downward trend, so alternative evaluation metrics are urgently necessary. When the current generation of outstanding taxonomists retires,there will be too few remaining taxonomists left to train the next generation. In light of these challenges, all co-authors worked together on this paper to analyze the current situation of taxonomy and put out a joint call for immediate actions to advance taxonomy in China.Chaodong Zhu Arong Luo Ming Bai Michael COrr Zhonge Hou Siqin Ge Jun Chen Yibo Hu Xuming Zhou Gexia Qiao Hongzhi Kong Limin Lu Xiaohua Jin Lei Cai Xinli Wei Ruilin Zhao Wei Miao Qingfeng Wang Zhongli Sha Qiang Lin Meng Qu Jianping Jiang Jiatang Li Jing Che Xuelong Jiang Xiaoyong Chen Lianming Gao Zongxin Ren Chunlei Xiang Shixiao Luo Donghui Wu Dong Liu Yanqiong Peng Tao Su Chenyang Cai Tianqi Zhu Wanzhi Cai Xingyue Liu Hu Li Huaijun Xue Zhen Ye Xuexin Chen Pu Tang Shujun Wei Hong Pang Qiang Xie Feng Zhang Feng Zhang Xianjin Peng Aibing Zhang Taiping Gao Changfa Zhou Chen Shao Libin Ma Zhaoming Wei Yunxia Luan Ziwei Yin Wu Dai Cong Wei Xiaolei Huang Jingxian Liu Xiangsheng Chen Tianci Yi Zhisheng Zhang Zhulidezi Aishan Qin Li Hongying Hu 2022Zoological Systematics2022,47,3:1
19Correlation analysis of the North Equatorial Current bifurcation and the Indonesian Throughflow显示文摘Based on monthly mean Simple Ocean Data Assimilation(SODA) products from 1958 to 2007,this study analyzes the seasonal and interannual variability of the North Equatorial Current(NEC) bifurcation latitude and the Indonesian Throughflow(ITF) volume transport. Further,Empirical Mode Decomposition(EMD) method and lag-correlation analysis are employed to reveal the relationships between the NEC bifurcation location,NEC and ITF volume transport and ENSO events. The analysis results of the seasonal variability show that the annual mean location of NEC bifurcation in upper layer occurs at 14.33°N and ITF volume transport has a maximum value in summer,a minimum value in winter and an annual mean transport of 7.75×106 m3/s. The interannual variability analysis indicates that the variability of NEC bifurcation location can be treated as a precursor of El Ni?o. The correlation coefficient between the two reaches the maximum of 0.53 with a time lag of 2 months. The ITF volume transport is positively related with El Ni?o events with a maximum coefficient of 0.60 by 3 months. The NEC bifurcation location is positively correlated with the ITF volume transport with a correlation coefficient of 0.43.ZHAO Yunxia WEI Zexun WANG Yonggang XU Tengfei FENG Ying 2015Acta Oceanologica Sinica2015,34,9:1
20An integrated approach to energy - aware medium access for wireless sensor net- works 显示文摘CHEN Yunxia ZHAO Qing 2007IEEE Transactions on Signal Processing2007,55,7:1
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