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21篇 您的检索式:作者名="HE Chunming"
    题名 作者 年代 出处 被引量
1Nutritional Status of Children during and post-Global Economic Crisis in China显示文摘Objective To describe the impact of the global economic crisis on the nutritional status of children in China during and after the crisis.Methods Data from 1990 to 2010 were sourced from the National Food and Nutrition Surveillance System.Approximately 16 000 children under 5 years old were selected using a stratified random cluster method from 40 surveillance sites.Anthropometric and hemoglobin measurements for children under 5 were conducted.Nutritional status was determined according to WHO child growth standards.Results Prevalence of underweight and stunting in children under 5 had a downward trend.Underweight prevalence was close to normal (less than 5%),with prevalence of stunting 12.6% in 2009 and 12.1% in 2010 in rural areas.Prevalence of stunting in infants under 6 months and 6‐12 months old in poorer rural areas increased from 5.7%‐9.1% and 6.7%‐12.5%,respectively,in 2008‐2009.This trend also continued post‐crisis in 2010.Prevalence of stunting in children left behind by mothers was 20%‐30% higher than in children the same age in general and poorer rural areas.Prevalence of anemia in children did not change in rural areas,but prevalence of anemia in all age groups increased in poorer rural areas,especially in children under 24 months old.Level reached 30%‐40% in 2009,and fluctuated in 2010.Conclusion The nutritional status of children under 5 was comparatively stable during and after the global economic crisis,attributable to the Chinese government's policy response.The nutritional status in poorer rural areas fluctuated in response to the economic crisis and,thus,relevant action and intervention must be taken immediately to help the most vulnerable population in poorer rural areas.A proper national nutritional strategy for children under 2 years old,including nutrition supplementation for pregnant women and in‐home fortification for complementary feeding,should be initiated.CHEN ChunMing HE Wu WANG YuYing DENG LiNa JIA FengMei 2011Biomedical and Environmental Sciences2011,24,4:22
2Occurrence of avian leukosis virus subgroup J in commercial layer flocks in China显示文摘Binrui Xu Weixing Dong Chunming Yu Zhaoqing He Yanli Lv Yanzheng Sun Xiaoyu Feng Ning Li L. F. Lee Maoxiang Li 2004Avian Pathology2004,,1:3
3Effects of experimental conditions on the molecular composition of maltenes and asphaltenes derived from oilsands bitumen: Characterized by negative-ion ESI FT-ICR MS显示文摘A vacuum topped Canadian oilsands bitumen (VTB) was subjected to solvent precipitation and subsequently characterized by elemental analysis, gel permeation chromatograph (GPC), 1 H-NMR spectroscopy and negative-ion electrospray ionization (ESI) Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). Effects of experimental conditions such as solvent types (n-C5 , n-C6 , and n-C7 ), solvent purity, and solvent washing time on asphaltenes yields, bulk composition, and molecular composition of detectable heteroatom compounds in ESI source were determined. Elemental nitrogen and sulfur were enriched in asphaltenes while elemental oxygen had comparable content in maltenes and asphaltenes. Molecular composition of asphaltenes varies with separation conditions. The N1 and O1 species identified by ESI FT-ICR MS were enriched in maltenes. The O2 species exhibited two different double bond equivalents (DBE) distributions and solubility in normal paraffin solvents, indicating two types of molecular structures. Multi oxygen atom containing compounds mainly detected in asphaltenes. Compound class distributions are similar for maltenes derived from n-C5 , n-C6 , and n-C7 , as well as for asphaltenes. The cyclic paraffin impurities in normal paraffin solvents had a significant influence on asphaltenes yields and heteroatom molecular composition. A portion of neutral N1 species and acidic O2 species adsorbed on asphaltenes could be dissolved by increasing washing time. Cautions should be exercised when interpreting the properties and composition of asphaltenes obtained with different experimental conditions.WANG LiTao HE Chen LIU Yang ZHAO SuoQi ZHANG YaHe XU ChunMing CHUNG Keng H. SHI Quan 2013Science China Chemistry2013,56,7:2
4Spatial distribution of arbuscular mycorrhizal fungi, glomalin and soil enzymes under the canopy of Astragalus adsurgens Pall. in the Mu Us sandland, China显示文摘Chunming Bai Xueli He Hongliang Tang Baoqin Shan Lili Zhao 2009Soil Biology and Biochemistry2009,,:2
5Li 4 Ti 5 O 12 prepared by a modified citric acid sol–gel method for lithium-ion battery显示文摘Chunming Zhang Yaoyao Zhang Jin Wang Dan Wang Dannong He Yongyao Xia 2013Journal of Power Sources2013,,:1
6Spatial distribution of arbuscular mycorrhizal fungi, glomalin and soil enzymes under the canopy of Astragalus adsurgens Pall in the Mu Us sandland, China显示文摘BAI chunming HE Xueli TANG Hongliang 2009Soil Biology and Biochemistry2009,41,:1
7Survivin small interfering RNA suppresses glioblastoma growth by inducing cellular apoptosis显示文摘A survivin small interfering RNA sequence specific for a human and mouse homogenous sequence was constructed.Survivin small interfering RNA could significantly inhibit glioma cell proliferation and induce apoptosis when it was transfected into either a human glioma cell line U251 or rat glioma C6 cells in vitro.In addition,treatment of rat orthotopic glioma models with survivin small interfering demonstrated the inhibition of glioma growth in vivo.Our experimental findings suggest that the use of RNA interference techniques to target the survivin sequence may be useful in the treatment of glioma.Yanbo Liu Chunming Miao Zhenjiang Wang Xin He Weigao Shen 2012Neural Regeneration Research2012,7,12:1
8Mechanism of formation of aligned two-phase microstructure in a Fe-0.25wt%C alloy under high magnetic field gradients显示文摘Kai Wang Qiang Wang Chunjiang Wang Yi Yuan Chunming Liu Jicheng He 2009Philosophical Magazine Letters2009,,11:1
9CO 2 laser scan- ning repair fused silica surface defects显示文摘Jiang Yong He Shaobo Yuan Xiaodong Wang Haijun Li- ao Wei Lv Haibing Liu Chunming Xiang Xia Qiu Rong Yang Yongjia Zheng Wanguo the experimental researches and numerical simulations of Zu Xiaotao 2014Journal of phys- ics2014,,06:1
10Manipulating Surface Ligands of CuS Nanocrystals (NC’s): Synthesis, Characterization, and Application to Organic Solar Cells显示文摘Jun Li Tonggang Jiu Guo-Hong Tao Guojie Wang Chunming Sun Pandeng Li Junfeng Fang Ling He 2013Journal of Colloid And Interface Science2013,,:1
11Active contours driven by local Gaussian distribution fitting energy 显示文摘Wang Li Lei He Li Chunming 2009Signal Processing2009,89,12:1
12Active contours driven by local Gaussian distribution fitting energy显示文摘Li Wang Lei He Arabinda Mishra Chunming Li 2009Signal Processing2009,,12:1
13SPARSE SEQUENCE CONSTRUCTION OF LDPC CODES显示文摘This letter proposes a novel and simple construction of regular Low-Density Parity-Check (LDPC) codes using sparse binary sequences. It utilizes the cyclic cross correlation function of sparse sequences to generate codes with girth8. The new codes perform well using the sumproduct decoding. Low encodingcomplexity can also be achieved due to the inherent quasi-cyclic structure of the codes.He Shanbao Zhao Chunming Shi Zhihua 2005Journal of Electronics(China)2005,22,5:0
14Challenges and opportunities for engineering thermochemistry in carbon-neutralization technologies显示文摘Stalling and neutralizing carbon emissions while maintaining the quality of life is a global challenge of our time.With>80%of the world’s energy and materials(e.g.steel,cement,plastics)from fossil and carbonaceous resources,achieving this goal in a short time needs scientifically sound,economically sustainable and practically effective and deployable approaches,even though many strategies have been proposed by researchers and policymakers[1,2].Guangwen Xu Dingrong Bai Chunming Xu Mingyuan He 2023National Science Review2023,10,9:0
15A reference-guided TILLING by amplicon-sequencing platform supports forward and reverse genetics in barley显示文摘Barley is a diploid species with a genome smaller than those of other members of the Triticeae tribe,making it an attractive model for genetic studies in Triticeae crops.The recent development of barley genomics has created a need for a high-throughput platform to identify genetically uniform mutants for gene function investigations.In this study,we report an ethyl methanesulfonate(EMS)-mutagenized population consisting of 8525M_(3) lines in the barley landrace“Hatiexi”(HTX),which we complement with a high-quality de novo assembly of a reference genome for this genotype.The mutation rate within the population ranged from 1.51 to 4.09 mutations per megabase,depending on the treatment dosage of EMS and the mutation discrimination platform used for genotype analysis.We implemented a three-dimensional DNA pooling strategy combined with multiplexed amplicon sequencing to create a highly efficient and cost-effective TILLING(targeting induced locus lesion in genomes)platform in barley.Mutations were successfully identified from 72 mixed amplicons within a DNA pool containing 64 individual mutants and from 56 mixed amplicons within a pool containing 144 individuals.We discovered abundant allelic mutants for dozens of genes,including the barley Green Revolution contributor gene Brassinosteroid insensitive 1(BRI1).As a proof of concept,we rapidly determined the causal gene responsible for a chlorotic mutant by following the MutMap strategy,demonstrating the value of this resource to support forward and reverse genetic studies in barley.Congcong Jiang Miaomiao Lei Yu Guo Guangqi Gao Lijie Shi Yanlong Jin Yu Cai Axel Himmelbach Shenghui Zhou Qiang He Xuefeng Yao Jinhong Kan Georg Haberer Fengying Duan Lihui Li Jun Liu Jing Zhang Manuel Spannagl Chunming Liu Nils Stein Zongyun Feng Martin Mascher Ping Yang 2022Plant Communications2022,3,4:0
16The thylakoid membrane protein NTA1 is an assembly factor of the cytochrome b6f complex essential for chloroplast development in Arabidopsis显示文摘The cytochrome b_(6f)(Cyt b_(6f))complex is a multisubunit protein complex in chloroplast thylakoid membranes required for photosynthetic electron transport.Here we report the isolation and characterization of the new tiny albino 1(nta1)mutant in Arabidopsis,which has severe defects in Cyt b_(6f) accumulation and chloroplast development.Gene cloning revealed that the nta1 phenotype was caused by disruption of a single nuclear gene,NTA1,which encodes an integral thylakoid membrane protein conserved across green algae and plants.Overexpression of NTA1 completely rescued the nta1 phenotype,and knockout of NTA1 in wild-type plants recapitulated the mutant phenotype.Loss of NTA1 function severely impaired the accumulation of multiprotein complexes related to photosynthesis in thylakoid membranes,particularly the components of Cyt b_(6f).NTA1 was shown to directly interact with four subunits(Cyt b6/PetB,PetD,PetG,and PetN)of Cyt b_(6f) through the DUF1279 domain and C-terminal sequence to mediate their assembly.Taken together,our results identify NTA1 as a new and key regulator of chloroplast development that plays essential roles in assembly of the Cyt b_(6f) complex by interacting with multiple Cyt b_(6f) subunits.Na Li Wing Shing Wong Lei Feng Chunming Wang King Shing Wong Nianhui Zhang Wei Yang Yueming Jiang Liwen Jiang Jun-Xian He 2023Plant Communications2023,4,1:0
17Component Optimization and Seepage Simulation Method of Resin Based Permeable Brick显示文摘In order to solve the problem of urban surface runoff,it is necessary to study permeable brick deeply.Tensile test and DMA test were used to study the binder material of permeable brick,and a material with the best mechanical properties was selected as the binder of resin based permeable brick;The permeable brick with single gradation and continuous gradation and porosity of 0.1–0.5 gradient is constructed by 3D modeling method.The particle composition and the seepage simulation results of permeable brick under different design parameters were analyzed;A resin-based permeable brick with micro-pores was prepared using the selected binder and desert sand with high roundness as aggregate,and compared with the simulation,its water permeability coefficient is 3.25×10-2 cm/s and the compressive strength is 36.19 MPa.In the seepage simulation of permeable brick,it is known that with the increase of gradation width“value i”,the water permeability coefficient increases.Therefore,in order to control the number of aggregate particles and obtain better seepage performance,the wide gradation of i≥4 and the design porosity of 0.3–0.4 should be considered.This study provides a research basis and a simulation method for the component optimization of resin based permeable brick.Xiaofu Wang Xiong Zhang Yan He Chunming Lian 2020Journal of Renewable Materials2020,8,8:0
18REGULAR LOW-DENSITY PARITY-CHECK CODES BASED ON SHIFTED IDENTITY MATRICES显示文摘This paper extends the class of Low-Density Parity-Check (LDPC) codes that can be constructed from shifted identity matrices. To construct regular LDPC codes, a new method is proposed. Two simple inequations are adopted to avoid the short cycles in Tanner graph, which makes the girth of Tanner graphs at least 8. Because their parity-check matrices are made up of circulant matrices, the new codes are quasi-cyclic codes. They perform well with iterative decoding.He Shanbao Zhao Chunming Jiang Ming 2006Journal of Electronics(China)2006,23,1:0
19Stable Au nanoparticles confined in boron nitride shells for optimizing oxidative desulfurization显示文摘Supported gold(Au)nanocatalysts have long played an important role in numerous heterogeneous catalysis.However,the dominant difficulty of poor thermodynamic stability hampers its practical application.Herein,a core–shell structured Au nanocatalyst with Au nanoparticles(NPs)confined in boron nitride(BN)shells is proposed for enhanced thermodynamic stability.The two-dimensional porous structure of BN not only functions as a physical separator for the sintering resistance of Au NPs,but also provides a microchannel for catalytic reaction substrates.Besides,owing to the confinement effect,a strengthened interaction between well-designed Au NPs and the BN can be expected,which further boosts the stability and catalytic activity.Detailed experiments show that a proper BN shell thickness is important to maintain the balance between the sintering resistance and catalytic activity.A significantly boosted performance of 97.2%conversion in oxidative desulfurization(ODS)was obtained with a proper number of BN coating layers,outperforming the one with a thicker BN shell.Moreover,the recyclability of the prepared catalyst was investigated with no obvious decrease in catalytic performance after 10 runs,greatly higher than that without a BN shell,suggesting excellent durability.Linjie Lu Jing He Peiwen Wu Yang Sun Mingqing Hua Peng Cui Wenshuai Zhu Huaming Li Zhichang Liu Chunming Xu 2023Nano Research2023,16,10:0
20Radio Interference Characteristic of Ultra-high Voltage AC Transmission Lines by Using Stochastic Modeling显示文摘For developing ultra-high voltage(UHV) AC power transmission systems,it is important to precisely estimate and to limit the radio interference(RI) level of power lines.Based on the stochastic characteristics in amplitude and repetition rate of induced corona current,by using the probability theory and mathematical statistics,we establish a stochastic model for the wide-sense stationary random process of corona discharges.Then combining the stochastic model with model-propagation-analysis method,the RI levels under three-phase UHV AC transmission lines are calculated.The results of the calculation based on stochastic model method and International Council on Large Electric Systems(CIGRE) excitation function are compared with that based on semi-empirical method and some other excitation functions.The stochastic model based on different excitation functions is also adopted to simulate the RI levels under finite test lines with two opened terminations.The results indicate that with the same average maximum gradient on conductor surface and the same conductor type,the number of corona discharge per unit length is one of the main reasons that causes the difference between different excitation functions.It is also concluded that for a long test line,the effect of standing wave on RI field strength is negligible in the middle of the line,but obvious near both terminations: for a 10-km line,the maximum difference in RI field strength is 2.78 dB,between the peak value of the standing wave near the ends and the steady value near the middle of the line.HE Wangling WAN Baoquan PEI Chunming ZHANG Jiangong HE Junjia GUO Haozhou 2013高电压技术2013,39,10:0
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