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48篇 您的检索式:作者名="Yunxia Xu"
    题名 作者 年代 出处 被引量
1A Rare Allele of GS2 Enhances Grain Size anc Grain Yield in Rice显示文摘谷物尺寸决定谷物重量并且影响谷物质量。调整谷物尺寸的几主要量的特点 loci (QTL ) 被克隆;然而,我们调整米饭谷物的尺寸的内在的机制的理解仍然保持碎片。这里,我们报导克隆和主导的 QTL 的描述,染色体 2 上的谷物尺寸(GS2 ) 编码调整生长的因素 4,一个 transcriptional 管理者。GS2 本地化到原子核并且可以充当抄写使活跃之物。影响 microRNA 的有约束力的地点的 GS2 的一个稀罕变化, OsmiR396c,原因提高了 GS2/OsGRF4 的表示。GS2 表示的增加导致更大的房间和房间的增加的数字,它因此提高谷物重量和产量。进米饭栽培变种的 GS2/OsGRF4 的这稀罕等位基因的介绍能显著地提高谷物重量和增加谷物产量,用在引起产量很高的米饭变化的可能的应用。Jiang Hu Yuexing Wang Yunxia Fang Longjun Zeng Jie Xu Haiping Yu Zhenyuan Shi Jiangjie Pan Dong Zhang Shujing Kang Li Zhu Guojun Dong Longbiao Guo Dali Zeng Guangheng Zhang Lihong Xie Guosheng Xiong Jiayang Li Qian Qian 2015Molecular Plant2015,8,10:57
2Genetic analysis and molecular mapping of a presenescing leaf gene psll in rice (Oryza sativa L.)显示文摘A rice psl1 (presenescing leaf) mutant was obtained from a japonica variety Zhonghua 11 via radiation of 60Co-γ in M2 generation. Every leaf of the mutant began to wither after it reached the big-gest length,while the leaves of the wild variety could keep green for 25―35 d. In this study,genetic analysis and gene mapping were carried out for the mutant identified. The SSR marker analysis showed that the mutant was controlled by a single recessive gene (psl1) located on chromosome 2. Fine mapping of the psl1 locus was conducted with 34 new STS markers developed around psl1 anchored region based on the sequence diversity between Nippon-bare and 93-11. The psl1 was further mapped be-tween two STS markers,STS2-19 and STS2-26,with genetic distances of 0.43 and 0.11 cM,respectively,while cosegregated with STS2-25. A BAC contig was found to span the psl1 locus,the region being delim-ited to 48 kb. This result was very useful for cloning of the psl1 gene.WANG dun WU Shujun ZHOU Yong ZHOU Lihui XU Jiefen HU Jing FANG Yunxia GU Minghong LIANG Guohua 2006Chinese Science Bulletin2006,51,24:16
3A study of scale effect on specific sediment yield in the Loess Plateau,China显示文摘Based on data from 148 hydrometric stations in the Yellow River Basin, an analysis of regional scale relationship, or the relationship between specific sediment yield and drainage basin area, has been undertaken in the study area of the Loess Plateau. For different regions, scale relationship in log-log ordinate can be fitted by two types of lines: straight and parabola, and for each line, a function was fitted using regression analysis. The different scale relationships have been explained in terms of the difference in surface material distribution and landforms. To offset the scale-induced influence, calcu-lation has been done based on the fitted functions, in order to adjust the data of specific sediment yield to a common standard area. Based on the scaled data, a map of specific sediment yield was con-structed using Kriging interpolation. For comparison, a map based on the un-scaled data of specific sediment yield was also constructed using the same method. The two maps show that the basic pattern of specific sediment yield was basically the same. The severely eroded areas (Ys >10000 t km-2a-1) were at the same locations from Hekouzhen to Longmen in the middle Yellow River Basin. However, after the adjustment to a common standard area, the very severely eroded area (Ys >20000 t km-2a-1) became much enlarged because after the adjustment, all the values of Ys in the lower river basin in those regions became much larger than before.YAN YunXia & XU JiongXin Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences Key Laboratory of Water Cycle and Related Land Surface Processes, Chinese Academy of Sciences, Beijing 100101, China 2007Science China Earth Sciences2007,50,1:9
4Corresponding Factors Influencing Crude Oils Assay Using Low-field Nuclear Magnetic Resonance显示文摘In this study, the main factors influencing the measurements by means of the off-line low-field 1H NMR in the lab were discussed base on a robust calibration model established by the PLS algorithm using 255 crude oil samples. The preheating temperature had a great influence on the viscosity of oil samples and the resolution of spectral analysis. The repeatability of spectral measurements was impacted by the metal and wax content of the oil samples. For the case of high wax content oils, the wax species began to crystallize in the course of determination that could affect the repeatability of spectral measurements. These factors have evidenced why the preheating devices and filter unit are necessary when low field NMR system is used in the online analysis process. The investigation is very important for the on-line application of the low field NMR.Feng Yunxia Chu Xiaoli Xu Yupeng Tian Songbai 2014China Petroleum Processing & Petrochemical Technology2014,16,2:4
5MicroRNA-142-3p is frequently upregulated in colorectal cancer and may be involved in the regulation of cell proliferation显示文摘MicroRNAs are small single-stranded RNA molecules consisting of approximately 22 nucleotides (nt), and have post-transcriptional regulatory functions. By gene chip screening, we previously showed that miR-142-3p was significantly upregulated in colorectal cancer tissue and was associated with clinicopathological features, compared with matched non-tumor tissue. In this study, we confirmed significant upregulation of miR-142-3p in 60 colorectal cancer samples and three colorectal cancer cell lines by quantitative real-time PCR (qRT-PCR). Using software and network resources, we predicted TCF7 as a target of miR-142-3p, which we confirmed with dual-luciferase assays. By RT-PCR and Western blot analysis, we found miR-142-3p negatively regulates TCF7 expression post-transcriptionally. CCK8 assays and growth curves indicated that overexpression of miR-142-3p in SW480 colorectal cancer cells potently inhibited cell proliferation in vitro. The expression of TCF7 mRNA and protein was upregulated in both colorectal cancer tissues and colorectal cancer cell lines, closely correlating with its function as an oncogene in promoting tumor cell proliferation and inhibiting apoptosis. With TCF7 as a direct target, our results suggested that miR-142-3p may be involved in the regulation of cell proliferation in colorectal cancer.ZHOU JiaLiang JIANG Zhi WANG ZhengWu ZOU ShiTao ZHANG YunXia CAI Wei WANG MingZhi XU Min SHI DongTao CHEN WeiChang 2013Chinese Science Bulletin2013,58,23:4
6Long-term stable silver nanowire transparent composite as bottom electrode for perovskite solar cells显示文摘作为传统的铟听氧化物(ITO ) 的最有希望的选择,银 nanowire (AgNW ) 有改进稳定性的合成透明电极在各种各样的设备与太古的 AgNWs 网络的相比被表明了。然而,象为 perovskite 太阳能电池的底部电极合成的稳定的 AgNW/polymer 还没被报导了。这里,与修改抗氧化剂的 chitosan 聚合物合成的长期的稳定的、光滑的 AgNW 被开发。修改聚合物能有效地与 perovskite 保护太古的 AgNWs 免受方面反应的伤害,而它不通过绝缘的聚合物的接口堵住搬运人飘移。同样准备的 AgNW/polymer 合成电极在 50 m 的一种扫描尺寸在 10 nm 下面展出了根平均数平方粗糙 ?????Yunxia Jin Yong Sun Kaiqing Wang Yani Chen Ziqi Liang Yuxi Xu Fei Xiao 2018Nano Research2018,11,4:4
7Inhibiting Hv1 channel in peripheral sensory neurons attenuates chronic inflammatory pain and opioid side effects显示文摘Both opioids and nonsteroidal anti-inflammatory drugs(NSAIDS)produce deleterious side effects and fail to provide sustained relief in patients with chronic inflammatory pain.Peripheral neuroinflammation(PN)is critical for initiation and development of inflammatory pain.A better understanding of molecular mechanisms underlying PN would facilitate the discovery of new analgesic targets and the development of new therapeutics.Emerging evidence suggests that peripheral sensory neurons are not only responders to painful stimuli,but are also actively engaged in inflammation and immunity,whereas the intrinsic regulatory mechanism is poorly understood.Here we report the expression of proton-selective ion channel Hv1 in peripheral sensory neurons in rodents and humans,which was previously shown as selectively expressed in microglia in mammalian central nervous system.Neuronal Hv1 was up-regulated by PN or depolarizing stimulation,which in turn aggravates inflammation and nociception.Inhibiting neuronal Hv1 genetically or by a newly discovered selective inhibitor YHV98-4 reduced intracellular alkalization and ROS production in inflammatory pain,mitigated the imbalance in downstream SHP-1-pAKT signaling,and also diminished pro-inflammatory chemokine release to alleviate nociception and morphine-induced hyperalgesia and tolerance.Thus,our data reveal neuronal Hv1 as a novel target in analgesia strategy and managing opioids-related side effects.Qiansen Zhang Yimin Ren Yiqing Mo Peipei Guo Ping Liao Yuncheng Luo Jie Mu Zhuo Chen Yang Zhang Ya Li Linghui Yang Daqing Liao Jie Fu Juwen Shen Wei Huang Xuewen Xu Yanyan Guo Lianghe Mei Yunxia Zuo Jin Liu Huaiyu Yang Ruotian Jiang 2022Cell Research2022,32,5:3
8MULTI-TILLERING DWARF1, a new allele of BRITTLE CULM 12, affects plant height and tiller in rice显示文摘Plant height and tillering are crucial factors determining rice plant architecture and influencing rice grain production. In this study, multi-tillering dwarf1(mtd1), a stable multi-tiller and dwarf mutant, was screened from the ethylmethane sulfonate-treated japonica rice variety Wuyunging7. Compared with the wild type, mtd1 mutant exhibited pleiotropic phenotypes, including dwarfism, more tillers, brittle culms and delayed heading date.By employing map-based cloning strategy, the gene MTD1 was finally mapped to an approximately 66-kb region on the short arm of chromosome 9. Sequencing results showed that the gene LOC_Os09g02650(BC12) in mtd1 mutant had a single nucleotide substitution(G to A), which generated a premature translation stop. Over-expressing MTD1/BC12 coding sequence rescued all the phenotypes of mtd1 mutants including plant height and tillers, which confirms that BC12 is the mutated gene in mtd1 mutant.Quantitative reverse transcription-PCR analysis showed that MTD1/BC12 could negatively regulate the expression of MONOCULM 1, IDEAL PLANT ARCHITECTURE1 and Tillering and Dwarf 1, and control rice tillering. Remarkably, a-amylase activity analysis and gibberellic acid(GA)treatment showed that the dwarf phenotype of mtd1 mutant was dependent on GA biosynthesis pathway. These results facilitated to further uncover the molecular mechanism of the growth and development in rice.Haiping Yu Deyong Ren Yangzhou Zhu Jiangmin Xu Yuexing Wang Ruifang Liu Yunxia Fang Zhenyuan Shi Jiangjie Pan Mei Lu Bojun Ma Jiang Hu Yuchun Rao 2016Science Bulletin2016,61,23:3
9Do Forest Landscape Pattern Planning and Optimization Play a Role in Enhancing Soil Conservation Services in Mountain Areas of Western China?显示文摘The relationship between landscape patterns and soil conservation,as well as the need for nature-based soil erosion control and landscape pattern optimization,have increasingly gained attention in the scientific and political community in the past decade.With the implementation of a series of afforestation/reforestation projects in the western China,the optimization and management of forest landscape patterns will become more important for soil conservation.In this study,the Bailongjiang Watershed(BLJW),in the western China,was used as a case study to explore the relationship between the forest landscape pattern and soil conservation services using mathematical and spatial statistics methods.A spatially-explicit model called the sediment delivery ratio(SDR)model of the Integrated Valuation of Ecosystem Services and Tradeoffs(InVEST)was used to assess the soil conservation service in each sub-basin of BLJW in 1990,2002,and 2014,and landscape indices were used to describe changes in forest landscape patterns in each sub-basin.Nine forest landscape indices,including the percentage of landscape(PLAND),largest patch index(LPI),edge density(ED),landscape shape index(LSI),mean patch shape(SHAPEMN),patch cohesion index(COHESION),landscape division index(DIVISION),splitting index(SPLIT)and aggregation index(AI),were significantly correlated to the soil conservation service.PLAND,AI,LSI and SPLIT of forestland were determined to be the more important landscape indicators.The results also indicated that soil conservation was substantially scale-dependent.The results demonstrated that landscape type diversity greatly affected watershed soil conservation and can be used for forest landscape restoration and management.Furthermore,spatial statistics analysis indicated that the Spatial Lag Model(SLM)was superior to the Ordinary Least Squares(OLS)for soil conservation regressions in 1990 and 2014,while OLS was more appropriate for the regression in 2002.These findings will be useful for enhancing soil conservation and for optimizing mountainous forest landscape patterns for afforestation/reforestation and regional development.Future planning and implementation of ecological restoration should focus more on strategic spatial planning and integrated landscape management with full consideration of future climate,water availability/consumption,hydrological regime,topography,and watershed features,especially on afforestation and revegetation projects in western mountainous China,where the socio-ecological system is fragile and poor.GONG Jie ZHANG Jinxi ZHANG Yunxia ZHU Yuehua JIN Tiantian XU Caixian 2021Chinese Geographical Science2021,31,5:3
10Identification and characterization of Mini1, a gene regulating rice shoot development显示文摘The aerial parts of higher plants are generated from the shoot apical meristem(SAM). In this study, we isolated a small rice(Oryza sativa L.) mutant that showed premature termination of shoot development and was named mini rice 1(mini1). The mutant was first isolated from a japonica cultivar Zhonghua11(ZH11) subjected to ethyl methanesulfonate(EMS)treatment. With bulked segregant analysis(BSA) and map-based cloning method, Mini1 gene was finally fine-mapped to an interval of 48.6 kb on chromosome 9. Sequence analyses revealed a single base substitution from G to A was found in the region, which resulted in an amino acid change from Gly to Asp.The candidate gene Os09g0363900 was predicted to encode a putative adhesion of calyx edges protein ACE(putative HOTHEAD precursor) and genetic complementation experiment confirmed the identity of Mini1. Os09g0363900 contains glucose-methanol-choline(GMC) oxidoreductase and NAD(P)-binding Rossmann-like domain, and exhibits high similarity to Arabidopsis HOTHEAD(HTH). Expression analysis indicated Mini1 was highly expressed in young shoots but lowly in roots and the expression level of most genes involved in auxin biosynthesis and signal transduction were reduced in mutant.We conclude that Mini1 plays an important role in maintaining SAM activity and promoting shoot development in rice.Yunxia Fang Jiang Hu Jie Xu Haiping Yu Zhenyuan Shi Guosheng Xiong Li Zhu Dali Zeng Guangheng Zhang Zhenyu Gao Guojun Dong Meixian Yan Longbiao Guo Yonghong Wang Qian Qian 2015Journal of Integrative Plant Biology2015,57,2:3
11Quantifying 3D cell-matrix interactions during mitosis and the effect of anticancer drugs on the interactions显示文摘The mechanical force between cells and the extracellular microenvironment is crucial to many physiological processes such as cancer metastasis and stem cell differentiation. Mitosis plays an essential role in all these processes and thus an in-depth understanding of forces during mitosis gains insight into disease diagnosis and disease treatment. Here, we develop a traction force microscope method based on monolayer fluorescent beads for measuring the weak traction force (tens of Pa) of mitotic cells in three dimensions. We quantify traction forces of human ovarian granulosa (KGN) cells exerted on the extracellular matrix throughout the entire cell cycle in three dimensions. Our measurements reveal how forces vary during the cell cycle, especially during cell division. Furthermore, we study the effect of paclitaxel (PTX) and nocodazole (NDZ) on mitotic KGN cells through the measurement of traction forces. Our results show that mitotic cells with high concentrations of PTX exert a larger force than those with high concentrations of NDZ, which proved to be caused by changes in the structure and number of microtubules. These findings reveal the key functions of microtubule in generating traction forces during cell mitosis and explain how dividing cells regulate themselves in response to anti-mitosis drugs. This work provides a powerful tool for investigating cell-matrix interactions during mitosis and may offer a potential way to new therapies for cancer.Yongman Liu Jianye Wang Yong Su Xiaohai Xu Hong Liu Kainan Mei Shihai Lan Shubo Zhang Xiaoping Wu Yunxia Cao Qingchuan Zhang Shangquan Wu 2021Nano Research2021,14,11:3
12GENERALIZED SIMULATION MODEL FOR MILLED SURFACE TOPOGRAPHY-APPLICATION TO PERIPHERAL MILLING显示文摘Based on analyzing various factors influencing milled surface topography, firstly, a generalized model for milled surface topography is proposed. Secondly, using the principles of transformation matrix and vector operation, the trajectory equation of cutting edge relative to workpiece is derived. Then, a three dimensional topography simulation algorithm is constructed through dividing the workpiece into regular grids. Finally, taking the peripheral milling process as an example, the generalized model is simplified, and the corresponding simulation examples are given. The results indicate that it is very efficient for the generalized model to be used to analyze and simulate the peripherally milled surface topography.Xu Anping Qu Yunxia Li Weimin School of Mechanical Engineering, Hebei University of Technology Zhang Dawei Huang Tian Tianjin University 2001Chinese Journal of Mechanical Engineering2001,14,2:2
13Impacts of Preoperative Smoking and Smoking Cessation Time on Preoperative Peripheral Blood Inflammatory Indexes and Postoperative Hospitalization Outcome in Male Patients with Lung Cancer and Surgery Treatment显示文摘Objectives To investigate the effects of preoperative smoking and smoking cessation time on preoperative peripheral blood inflammatory indexes and postoperative hospitalization outcomes in male patients with lung cancer and surgery therapy.Methods We retrospectively enrolled 637 male patients who underwent curative-intent lung cancer resection between January 2014 and December 2016.Patients were classified as the current smokers,the never smokers,and the ex-smokers based on their smoking history,and the ex-smokers were allocated into five subgroups according to their smoking cessation times(CeT):CeT W6 weeks,6weeks10years.The preoperative peripheral blood white blood cells(WBCs),albumin,neutrophil to lymphocyte ratio(NLR),platelet to lymphocyte ratio(PLR),intraoperative blood loss,30-day mortality,in-hospital days,hospitalization costs,intensive care un辻(ICU),admission days and placement time of closed thoracic drainage tube were compared among difTerent groups.Results There were significant differences in WBC(F=S.275,P<0.001)and albumin(F=2,470,P<0.05)among patients of current smokers,ex-smokers with different smoking cessation time,and never-smokers.The blood WBC count in current smokers(7.7 X 109/L)was significantly higher than that in ex・smokers(7.0 X 109/L)and never-smokers(5.9 X 109/L)(t=-2.145,P<0.05;t=-6.073,P<0.01,respectively).The level of peripheral blood albumin in current smokers(41.1 g/L)was lower than that in ex・smokers(42.1 g/L)and neve—smokers(43.2 g/L)(t=2.323,P<0.05;t=3.995,P<0.01,respectively).The level of peripheral blood NLR in current smokers(3.7)was higher than that in ex-smokers(3.1)and never smokers(2.8)(t—-1.836,P<0.05;t=-2.889,P<0.01,respectively).There was no significant difference in WBC,albumin and NLR among five subgroups of different smoking cessation time.No significant difference was observed in intraoperative blood loss,30-day mortality,hospitalization costs,hospital stay,ICU stay and placement time of closed thoracic drainage tube among groups either.Conclusion Smoking increases the preoperative inflammatory indexes in peripheral blood of lung cancer patients.Smoking cessation has beneficial effect on reducing levels of these inflammatory indexes,which may be not impacted by the time length of smoking cessation.Therefore,lung cancer patients should be encouraged to quit smoking at any time.Longming Xu Shuiping Dai Yunxia Zuo 2020Chinese Medical Sciences Journal2020,35,2:2
14Scale effects on specific sediment yield in the Yellow River basin and geomorphological explanations显示文摘Xu Jiongxin Yan Yunxia 2005Journal of Hydrology2005,307,:1
15Highly Efficient and Recyclable Triple-Shelled Ag@Fe3O4@SiO2@TiO2 Photocatalysts for Degradation of Organic Pollutants and Reduction of Hexavalent Chromium Ions显示文摘SU Jianwei ZHANG Yunxia XU Sichao 2014Nanoscale2014,6,10:1
16Three new polycatenation networks based on 4,4-oxybis(benzoate)and bis(imidazole)ligands:synthesis,structure and photoluminescence显示文摘XU Yun CHEN Pangkuan CHE Yunxia 2010Eur J Inorg Chem2010,,:1
17Simulation and experimental investigation of the end milling process considering the cutter flexibility 显示文摘Xu Anping Qu Yunxia Zhang Dawei 2003Int J Mach Tools Manufacture2003,43,3:1
18Neural circuitry underlying sentence-level linguistic prosody显示文摘Yunxia Tong Jackson Gandour Thomas Talavage Donald Wong Mario Dzemidzic Yisheng Xu Xiaojian Li Mark Lowe 2005Neuroimage2005,,2:1
19Hemispheric roles in the perception of speech prosody显示文摘Jackson Gandour Yunxia Tong Donald Wong Thomas Talavage Mario Dzemidzic Yisheng Xu Xiaojian Li Mark Lowe 2004Neuroimage2004,,1:1
20The status and development of treatment techniques of typical waste electrical and electronic equipment in China: A review显示文摘HE Yunxia XU Zhenming 2014Waste Management & Research2014,32,4:1
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