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16篇 您的检索式:作者名="ZHENG HongWen"
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1Effects of key design parameters of tine furrow opener on soil seedbed properties显示文摘The structural parameters of tine furrow openers have significant effects on soil property of seed furrow in no-till planting,thereby affecting crop growth and yields.In order to analyze the effects of key parameters of tine furrow openers on soil properties(soil bulk density,soil water-stable aggregates(WSA),and soil disturbance)of the surface soil layer of 0-10 cm and surface straw disturbance,the tine furrow openers with different structural parameters,including cutting edge thickness,cutting edge curve,penetration clearance angle and rake angle,were designed and tested under no-till conditions.Orthogonal test and single factor test were performed to analyze the effects of different parameters.Results showed that the rake angle,cutting edge thickness and cutting edge curve had significant effects on cross-sectional area of furrow(Af)and disturbance of surface straw;the rake angle had a significant effect on soil bulk density.Soil types and operating depth had significant effects on soil disturbance caused by tine furrow openers.The concave type tine furrow opener produced the lowest soil disturbance and soil bulk density of seed furrow,the highest surface straw disturbance and the greatest content of WSA(>0.5 mm).With increasing rake angles of tine furrow opener,the width of seedbed(Wsb)and the Af decreased first and then increased,respectively,while the width of soil throw(Wst)and the height of ridge(Hr)increased.The Wsb and Af created by tine furrow opener with 60°rake angle were significantly lower than that with others,respectively.The tine furrow opener with rake angle ranged from 45°to 60°created the lowest soil bulk density.As the penetration clearance angle increased,the content of WSA(>0.5 mm)decreased,but the effect of penetration clearance angle on the content of WSA(<0.5 mm)was not significant.The cutting edge thickness(<2 mm)had no significant effects on soil properties of seedbed.This study could provide a reference for optimal design of the tine furrow opener to create more suitable seedbed environment,and promote the application of the light no-till planters.Zhang Xiangcai Li Hongwen Du Ruicheng Ma Shaochun He Jin Wang Qingjie Chen Wanzhi Zheng Zhiqi Zhang Zhiqiang 2016International Journal of Agricultural and Biological Engineering2016,9,3:7
220 Years Advances in Preparation of Potassium Salts from Potassic Rocks:A Review显示文摘Long-term research on key techniques of clean utilization of potassic rocks from over twenty localities has been performed to settle the shortage of soluble potassium resources in China. The results show that K-feldspar as the principal mineral enriched in potassium could be decomposed in the media of Ca(OH)_2, NaOH, KOH-H_2O solution via hydrothermal treatment, into tobermorite, hydroxylcancrinite, and kalsilite respectively. By further processing, these compounds are feasible for being as slow-release carrier of potassium nitrate, extracting alumina, and preparing farm-oriented fertilizers of potassium sulphate and nitrate. Correspondingly, the filtrate is KOH,(Na, K)_2SiO_3, and K_2SiO_3 solution, from which potassium carbonate, sulphate, nitrate, and phosphate could be easily fabricated. As NaO H and KOH are recycled in the processing chains by causticizing sodium and/or potassium metasilicate solutions, the hydrothermal alkaline techniques as developed in this research have several advantages as lower consumption of disposable mineral resources and energy, maximized utilization of potassic mineral resources, as well as clean productions etc. Based on the approaches presented in this paper, the technical system of efficiently utilizing insoluble potassium resources has been established. The hydrothermal alkaline methods are feasible to be industrialized on a large scale, thus resulting in decreasing imports of potash fertilizers, improving the pattern of potassium fertilizer consumption, and enhancing the supplying guarantee of potassium resource in China.MA Hongwen YANG Jing SU Shuangqing LIU Meitang ZHENG Hong WANG Yingbin QI Hongbin ZHANG Pan YAO Wengui 2015Acta Geologica Sinica(English Edition)2015,89,6:5
3The heterogeneity of islet autoantibodies and the progression of islet failure in type 1 diabetic patients显示文摘Type 1 diabetes mellitus is heterogeneous in many facets. The patients suffered from type 1 diabetes present several levels of islet function as well as variable number and type of islet-specific autoantibodies. This study was to investigate prevalence and heterogeneity of the islet autoantibodies and clinical phenotypes of type 1 diabetes mellitus; and also discussed the process of islet failure and its risk factors in Chinese type 1 diabetic patients. A total of 1,291 type 1 diabetic patients were enrolled in this study. Demographic information was collected. Laboratory tests including mixed-meal tolerance test, human leukocyte antigen alleles, hemoglobin A1 c, lipids, thyroid function and islet autoantibodies were conducted. The frequency of islet-specific autoantibody in newly diagnosed T1 DM patients(duration shorter than half year) was 73% in East China. According to binary logistic regressions, autoantibody positivity, longer duration and lower Body Mass Index were the risk factors of islet failure. As the disease developed, autoantibodies against glutamic acid decarboxylase declined as well as the other two autoantibodies against zinc transporter 8 and islet antigen 2. The decrease of autoantibodies was positively correlated with aggressive beta cell destruction. Autoantibodies can facilitate the identification of classic T1 DM from other subtypes and predict the progression of islet failure. As there were obvious heterogeneity in autoantibodies and clinical manifestation in different phenotypes of the disease, we should take more factors into consideration when identifying type 1 diabetes mellitus.Jin Liu Lingling Bian Li Ji Yang Chen Heng Chen Yong Gu Bingqin Ma Wei Gu Xinyu Xu Yun Shi Jian Wang Dalong Zhu Zilin Sun Jianhua Ma Hui Jin Xing Shi Heng Miao Bing Xin Yan Zhu Zhenwen Zhang Ruifang Bu Lan Xu Guangde Shi Wei Tang Wei Li Dongmei Zhou Jun Liang Xingbo Cheng Bimin Shi Jixiang Dong Ji Hu Chen Fang Shao Zhong Weinan Yu Weiping Lu Chenguang Wu Li Qian Jiancheng Yu Jialin Gao Xiaoqiang Fei Qingqing Zhang Xueqin Wang Shiwei Cui Jinluo Cheng Ning Xu Guofeng Wang Guoqing Han Chunrong Xu Yun Xie Minmin An Wei Zhang Zhixiao Wang Yun Cai Qi Fu Yu Fu Shuai Zheng Fan Yang Qingfang Hu Hao Dai Yu Jin Zheng Zhang Kuanfeng Xu Yifan Li Jie Shen Hongwen Zhou Wei He Xuqin Zheng Xiao Han Liping Yu Jinxiong She Mei Zhang Tao Yang 2016Science China(Life Sciences)2016,59,9:5
4The molecular dynamics of neural metabolism during the action potential显示文摘Neural information processing is tightly coupled to both energy consumption and derivation from substrates.In this study,the energy function of the neuron during the action potential(AP)is described and analyzed.It has been observed that energy consumption during the AP does not match predictions of the conventional theory of neural energy dynamics.On short time scales,neural energy expenditure shifts between positive and negative phases.During the AP,the energy source switches from neuronal stores(positive expenditure or net consumption)to exploitation of external substrates,specifically the glucose and oxygen carried in cerebral blood(the negative consumption phase).Based on the idea of reductionism,this paper demonstrates how ion channels,membrane pumps and transporters,ionotropic and metabotropic receptor signaling pathways,astrocyte glycolysis and the production lactate,and the glutamate-glutamine cycle all serve to relate cerebral blood flow and neuronal metabolism to neuronal activity and so maintain neuronal energy charge during the AP.ZHENG HongWen WANG RuBin QIAO LinKun DU Ying 2014Science China(Technological Sciences)2014,57,5:5
5Mouse embryonic stem cells have increased capacity for replication fork restart driven by the specific Filia-Floped protein complex显示文摘Pluripotent 干细胞(PSC ) 在他们的快速的增长和作为结果的染色体不稳定性期间怀有组成的 DNA 复制应力在再生药妨碍他们的应用。理解复制的规章的机制在 PSC 强调反应因此是重要的。这里,我们报导胚胎的干细胞(转换字符) 是的那只老鼠比在解决复制应力的区分的房间优异。明确地,转换字符利用唯一的跳动 Filia 的蛋白质高效地支持阻止的复制的重启的复杂依赖者的机制分叉,因此维持 genomic 稳定性。转换字符特定的跳动 Filia 的建筑群在正常条件下面住在复制叉上。复制应力刺激他们的招募到阻止 Filia 的 151 残余是的叉和丝氨酸以一种 ATR 依赖的方式的 phosphorylated。这修正使跳动 Filia 的建筑群能充当功能的脚手架,它然后通过双机制支持拖延的叉重启:复制叉重启蛋白质, Blm,和刺激 ATR kinase 激活的两提高的招募。在 Blm 小径,脚手架招募 E3 ubiquitin ligase, Trim25,到阻止的复制叉,并且接着, Trim25 通过 ubiquitination 在阻止的复制叉拴住并且专注 Blm。在区分的房间,到复制叉和 ATR 发信号的激活的 Trim25-Blm 建筑群的招募由于转换字符特定的跳动 Filia 的支架的缺乏是更不柔韧的。因此,我们的学习表明转换字符利用另外、唯一的规章的层高效地支持阻止的叉重启并且维持 genomic 稳定性。Bo Zhao Weidao Zhang Yixian Cun Jingzheng Li Yan Liu Jing Gao Hongwen Zhu Hu Zhou Rugang Zhang Ping Zheng 2018Cell Research2018,28,1:4
6Effects of extracts from Chuanwu(Aconitum Carmichaelii) and Banxia(Rhizoma Pinelliae) on excisional wound healing in a rat's model显示文摘OBJEVTIVE: To investigate the effects of extracts from Chuanwu(Aconitum Carmichaelii) and Banxia(Rhizoma Pinelliae) on the excisional wound healing in a rat's model.METHODS: Rats were performed a surgical lesion with a 2.0 cm resected tissue in the dorsal fascia.Following, animals were randomly divided into model group, YNB group and APE group those were respectively treated with saline, 1 mg/mL of Yunnan Baiyao and 1 mg/mL of Chuanwu(Aconitum Carmichaelii) and Banxia(Rhizoma Pinelliae) extracts. Wound contractions in days 0, 3, 7, 14 and 21 were calculated by an image analyzer. Histological analysis was analyzed using hematoxilin and eosin.Levels of tumor necrosis factor-2(IL-2), IL-4, IL-10, transformαin(TNF-g growα), interleukinth factor-1(TGF-nd basic fibroblast growth factor(bFββ1) a-GF) were determined by real-time quantitative PCR.RESULTS: Compared with that of YNB group and APE gtoup, the skin of rats showed poor re-modeling and re-epithelization characterized by a significant decrease of neovascularization, epithelialization and fibroblast in the model group. In the APE group, levels of TNF-α-and IL-2 were significantly down-regulated and IL4 and IL-10 significantly upregulated in contrasted with that of model group.In addition, levels of TGF-roup were significantly iβ1 and bFGF in the APE gnduced compared with that of model group.CONCLUSION: The results suggest that the extracts from Chuanwu(Aconitum Carmichaelii) and Banxia(Rhizoma Pinelliae) promote wound healing in the rats, which is associated with enhancing antiinflammatory ability and inducing fibroblast formation.Xia Xichao Ma Yuhong Wang Fuan Zheng Xinhua Liu Yang Zhang Junfeng Cui Juan Shi Bingqin Li Hongwen Liu Rongzhi Zhang Yaping Cheng Zhaofei Han Xiaolong 2019Journal of Traditional Chinese Medicine2019,39,1:4
7Design and experiment of anti-vibrating and anti-wrapping rotary components for subsoiler cum rotary tiller显示文摘The commonly used subsoiling cum rotary tiller machine(SRT)in Northern China is a combination of subsoiler and horizontal rotary tiller,however backfilling of the subsoiling slot,excessive vibration and plant residue wrapping on rotary components has been rarely considered.Therefore,the rotary components and assembly were redesigned to address these issues and to an SRT fitted with IT225 short curve rotary blades behind the V-shape subsoiling slots and IIT245 long curve rotary blades between the tines.Long and short blades were fitted on a rotor in a double helix,with optimal spiral angles of 65° and 90°,and phase angle of 147°and 180°,respectively.Compared with the commonly used SRT(CSRT),the additional anti-wrapping cutting blades in the circumferential and axial direction of ASRT could remove hanging residue on the blade holders,wrapping on the rotor and formation of an isolation layer.Moreover,the cutting edge curve of anti-wrapping cutting blades was an exponential curve.Field tests demonstrated that the redesigned SRT with anti-vibrating and anti-wrapping rotary components(ASRT)had was a significant advancement over the CSRT.Moreover,the working depth of rotary tillage was more stable,while other observations confirmed that backfilling of the subsoiling slot was also improved.Kan Zheng Allen D.McHugh Hongwen Li Qingjie Wang Caiyun Lu Hongnan Hu Wenzheng Liu Zhiqiang Zhang Peng Liu Jin He 2019International Journal of Agricultural and Biological Engineering2019,12,4:4
8Chemical oxidation of arsenic in the environment and its application in remediation: A mini review显示文摘Arsenic(As)contamination in soil and water poses a serious threat to the ecosystem health and human beings,and is of widespread concern.The main As species found in soil and water are arsenite As(Ⅲ)and arsenate As(V).Because As(Ⅲ)is more toxic and often more mobile than As(Ⅴ),many remediation strategies aim to oxidize As(Ⅲ)to As(Ⅴ).In the environment,the reduction of As(Ⅴ)under anaerobic conditions is mainly mediated by microorganisms,but the oxidation of As(Ⅲ)under aerobic conditions can be mediated primarily by chemical processes.This article first reviews the existing knowledge on chemical oxidation of As(Ⅲ)in the environment,with an emphasis on the roles of iron(Fe)and manganese(Mn)oxides.The application of Fe and Mn oxides for the remediation of As-contaminated soil and water is then summarized.The oxidation of As(Ⅲ)by oxygen is very slow in the absence of catalysts.Many Mn oxides,on the other hand,can efficiently oxidize As(Ⅲ).Although the oxidation of As(Ⅲ)by Fe(Ⅲ)is also slow,this process can be accelerated by light or Fe(Ⅱ).Iron and Mn oxides are widely used for the remediation of As-contaminated soil and water,with Fe oxides generally acting as absorbents while Mn oxides as oxidants.To better understand and regulate As transformation and transport in the environment,further study is needed on the mechanisms and influencing factors of As(Ⅲ)oxidation by Fe and Mn oxides,and the development of innovative methods and materials based on Fe and Mn oxides are desired.Chaolei YUAN Qi LI Zhaoyang SUN Wenjun ZHANG Jiangrong CHEN Zheng CHEN Shuo NA Hongwen SUN 2023Pedosphere2023,33,1:2
9The PIWI-specific insertion module helps load longer piRNAs for translational activation essential for male fertility显示文摘PIWI-clade proteins harness pi RNAs of 24–33 nt in length.Of great puzzles are how PIWI-clade proteins incorporate pi RNAs of different sizes and whether the size matters to PIWI/pi RNA function.Here we report that a PIWI-Ins module unique in PIWIclade proteins helps define the length of pi RNAs.Deletion of PIWI-Ins in Miwi shifts MIWI to load with shorter pi RNAs and causes spermiogenic failure in mice,demonstrating the functional importance of this regulatory module.Mechanistically,we show that longer pi RNAs provide additional complementarity to target m RNAs,thereby enhancing the assembly of the MIWI/e IF3f/Hu R super-complex for translational activation.Importantly,we identify a c.1108C>T(p.R370W)mutation of HIWI(human PIWIL1)in infertile men and demonstrate in Miwi knock-in mice that this genetic mutation impairs male fertility by altering the property of PIWI-Ins in selecting longer pi RNAs.These findings reveal a critical role of PIWI-Ins-ensured longer pi RNAs in fine-tuning MIWI/pi RNA targeting capacity,proven essential for spermatid development and male fertility.Xin Wang Di-Hang Lin Yue Yan An-Hui Wang Jiaoyang Liao Qian Meng Wen-Qing Yang Heng Zuo Min-Min Hua Fengjuan Zhang Hongwen Zhu Hu Zhou Tian-Yu Huang Rui He Guangyong Li Yue-Qiu Tan Hui-Juan Shi Lan-Tao Gou Dangsheng Li Ligang Wu Yonggang Zheng Xiang-Dong Fu Jinsong Li Rujuan Liu Guo-Hui Li Mo-Fang Liu 2023Science China(Life Sciences)2023,66,7:2
10Immune responses of pigs inoculated with a recombinant fowlpox virus coexpressing GP5/GP3 of porcine reproductive and respiratory syndrome virus and swine IL-18显示文摘Guoshun Shen Ningyi Jin Mingxiao Ma Kuoshi Jin Min Zheng Tianzhong Zhuang Huijun Lu Guangze Zhu Hongtao Jin Minglan Jin Xiaowei Huo Xiaoguang Qin Ronglan Yin Chang Li Hongwen Li Yang Li Zhenzhen Han Yifeng Chen Miaomiao Jin 2007Vaccine2007,,21:2
11Adsorption characteristics of ammonium ion by zeolite 13X显示文摘Hong Zheng Lijie Han Hongwen Ma Yan Zheng Hongmei Zhang Donghong Liu Shuping Liang 2008Journal of Hazardous Materials2008,,2:1
12Molecular cloning of partial 14-3-3 genes in the marine sponge Hymeniacidon perleve and its role in differentiating infectious and non-infectious bacteria显示文摘Sponges (phylum Porifera) are the phylogenetically oldest metazoa and highly efficient filter feeders.In the marine ecosystem,they are unconditionally exposed to environmental stresses.Understanding the sponge-bacteria interaction is hence of both ecological and biological significance.This study investigated the specific interaction between the sponge Hymeniacidon perleve and the non-infectious bacteria,Escherichia coli and infectious bacteria,Vibrio spp.by measuring the 14-3-3 mRNA expression of H.perleve.Three partial cDNAs of 14-3-3 proteins and partial 18S RNA in H.perleve were cloned and sequenced.Using Reverse-transcription real-time PCR,the 14-3-3 mRNA expression of H.perleve was examined when exposed to three common bacteria in aquatic water-E.coli and two Vibrio spp.for different time and dosages.H.perleve could efficiently remove E.coli from the water column without self-infection;however Vibrio at higher dosages infected H.perleve.When H.perleve was exposed to E.coli (1.1×10 7 CFU mL-1),V.anguillarum Ⅱ (1.2×10 6 CFU mL-1) and V.alginolyticus (3.6×105 CFU mL-1) for 6h,the 14-3-3 mRNA expression in the V.anguillarum Ⅱ and V.alginolyticus groups was down-regulated by 2.67-and 2.36-fold,respectively.The 14-3-3 mRNA expression in the E.coli group was not significantly different.However,no clear trend was observed on the 14-3-3 transcript levels of H.perleve in response to different doses of V.anguillarum Ⅱ for different time.The results demonstrated that infectious bacteria can be discriminated by 14-3-3 mRNA expression of sponge H.perleve.FU WanTao ZHANG JuLin ZHENG ChangBo LIU Jing AN ZhongFu LIU HongWen ZHANG Wei 2013Science China(Technological Sciences)2013,56,3:1
13Ex situ Flora of China显示文摘The role of living collections-based research and discovery has been a prominent feature throughout the history of evolution and advance of botanical science: such research is the core and soul of the botanical gardens. Currently, there are c. 162 Chinese botanical gardens, harboring c. 20,000 species in China. As an example of initiatives to utilize the garden cultivated flora to address plant diversity conservation and germplasm discovery for sustainable agriculture and the bio-industries, the Ex situ Flora of China project aims to catalog and document this mega-diversity of plants that are cultivated in the Chinese botanical gardens. The concept of Ex situ Flora of China is a complete new formulation of species, based on garden cultivated individuals and populations, to obtain better morphological descriptions, provide multipurpose applicability and a fundamental data service that will support national bio-strategies and bioindustries. It emphasises integrative information, accurately collected from living collections across different Chinese botanical gardens, on biology, phenology, cultivation requirements and uses of plant resources, which are normally not available from traditional Floras based on herbarium specimens. The ex situ flora should provide better information coverage for taxonomy, biological and introduction and collection data and color photos of stems, leaves, flowers, fruits and seed, as well as useful information of cultivation key points and main use of each plant. In general, the Ex situ Flora of China provides more useful information than the traditional Flora Reipublicae Popularis Sinicae. The project of Ex situ Flora of China is planned to be one of the most important initiatives of the plant diversity research platform for sustainable economic and social development in China.Hongwen Huang Jingping Liao Zheng Zhang Qingqing Zhan 2017Plant Diversity2017,39,6:1
14G-quadruplexes folding mediates downregulation of PBX1 expression in melanoma显示文摘Dear Editor,Pre-B-cell leukemia homeobox transcription factor 1(PBX1)is identified at t(1;19)chromosomal translocations in acute pre-B-cell leukemia and is involved in regulating multiple biological processes.1 Importantly,accumulating evidence have suggested that dysregulation of PBX1 have been shown to be involved in tumorigenesis,poor prognosis and drug resistance.1 It has been shown that the expression of PBX1 is increased in melanoma cells and overexpression of PBX1 significantly promotes the melanoma cell growth.Yutong Sui Feilin Liu Song Zheng Xiaomei Liu Pingli Sun Chunli Yao Yingyao Zhang Hongwen Gao Xinghua Gao Jinyu Liu 2023Signal Transduction and Targeted Therapy2023,8,2:0
15Preparation of K_2CO_3 Using Potassic Syenite from East Qinling Mountains显示文摘1 Introduction Songxian at East Qinling mountains in China possesses more than 100 million tons potassic syenite with the average K2O content of 13%and the main mineral phase of K-feldspar which is a kind of potentialYANG Jing MA Hongwen QI Hongbin LUO Zheng ZENG Cheng 2014Acta Geologica Sinica(English Edition)2014,88,S1:0
16Optical and Structural Properties of AP-MOVPE GaInP/GaAs Heterostructures显示文摘Lattice matched GaInP/GaAs heterostructures were grown by atmospheric pressuremetal organic vapor phase epitaxy(AP-MOVPE).Compositional intermixing of As/P and Ga/In near the heterointerfaces was studied by photoluminescence(PL)spectroscopy.Indium segregation,memory effect of In into GaAs and the carry-over of As in the GaInP layer during the growth process were considered as three major factors giving rise to the anomalous emissions in the PL spectra.Both thermal annealing and zinc doping strongly enhanced the compositional interdiffusion near the heterointerfaces.REN Hongwen HUANG Bolin XU Xian'gang JIANG Minhua ZHENG Wanhua XU Junying ZHUANG Wanru 1994Chinese Physics Letters1994,11,12:0
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