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Study on Phosphating by Ultrasonic Wave at Room Temperature for Sintered NdFeB Magnet

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稀有金属材料与工程 2012年第S1期41卷 260-262页

作者： Sun Shuo zhang youping Yu Xintong Wang Yong Lou Guiyan Shenyang Univ Technol Sch Sci Shenyang 110870 Peoples R China Chinese Acad Sci Inst Met Res State Key Lab Corros & Protect Shenyang 110016 Peoples R China

The corrosion behavior of a NdFeB magnet obtained at room temperature,with and without ultrasonic were *** corrosion resistance was investigated by corrosion immersion tests in 3 wt%neutral NaCl solutions,potentiodynamic polarization tests and electrochemical impedance spectroscopy(EIS).The morphology of the conversion coatings on NdFeB surface were analyzed by scanning electron microscopy(SEM).And the forming mechanism of coatings was studied by potential-time *** tests of corrosion resistances show that the combination of phosphating treatment with ultrasonic will further improve the corrosion resistance of the *** SEM also confirms that phosphating coating under ultrasonic is more homogeneous and compact.

关键词： sintered NdFeB magnet phosphating ultrasonic wave corrosion resistance

Genome-Wide Analysis of the Sus Gene Family in Cotton

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Journal of Integrative Plant Biology 2013年第7期55卷 643-653页

作者： Changsong Zou Cairui Lu Haihong Shang Xinrui Jing Hailiang Cheng youping zhang Guoli Song State Key Laboratory of Cotton Biology Institute of Cotton Researchthe Chinese Academy of Agricultural Sciences

Sucrose synthase （Sus） is a key enzyme in plant sucrose metabolism. In cotton, Sus （EC 2.***.1.13） is the main enzyme that degrades sucrose imported into cotton fibers from the phloem of the seed coat. This study demonstrated that the genomes of Gossypium arboreum L., G. raimondii Ulbr., and G. hirsutum L., contained 8, 8, and 15 Sus genes, respectively. Their structural organizations, phylogenetic relationships, and expression profiles were characterized. Comparisons of genomic and coding sequences identified multiple introns, the number and positions of which were highly conserved between diploid and allotetraploid cotton species. Most of the phylogenetic clades contained sequences from all three species, suggesting that the Sus genes of tetraploid G. hirsutum derived from those of its diploid ancestors. One Sus group （Sus I） underwent expansion during cotton evolution. Expression analyses indicated that most Sus genes were differentially expressed in various tissues and had development-dependent expression profiles in cotton fiber cells. Members of the same orthologous group had very similar expression patterns in all three species. These results provide new insights into the evolution of the cotton Sus gene family, and insight into its members＇ physiological functions during fiber growth and development.

关键词： Expression fiber Gossypium phylogenetic sucrose synthase.

Transcriptome analysis reveals long noncoding RNAs involved in fiber development in cotton (Gossypium arboreum)

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Science China(Life Sciences) 2016年第2期59卷 164-171页

作者： Changsong Zou Qiaolian Wang Cairui Lu Wencui Yang youping zhang Hailiang Cheng Xiaoxu Feng Mtawa Andrew Prosper Guoli Song State Key Laboratory of Cotton Biology Institute of Cotton Research Chinese Academy of Agricultural Sciences

Long noncoding RNAs （lncRNAs） play important roles in various biological regulatory processes in yeast, mammals, and plants. However, no systematic identification of lncRNAs has been reported in Gossypium arboreum. In this study, the strand-specific RNA sequencing （ssRNA-seq） of samples from cotton fibers and leaves was performed, and lncRNAs involved in fiber initiation and elongation processes were systematically identified and analyzed. We identified 5,996 lncRNAs, of which 3,510 and 2,486 can be classified as long intergenic noncoding RNAs （lincRNAs） and natural antisense transcripts （IncNAT）, respectively. LincRNAs and lncNATs are similar in many aspects, but have some differences in exon number, exon length, and transcript length. Expression analysis revealed that 51.9% of lincRNAs and 54.5% of lncNATs transcripts were preferentially expressed at one stage of fiber development, and were significantly highly expressed than protein-coding tran- scripts （21.7%）. During the fiber and rapid elongation stages, rapid and dynamic changes in lncRNAs may contribute to fiber development in cotton. This work describes a set of lncRNAs that are involved in fiber development. The characterization and expression analysis of lncRNAs will facilitate future studies on their roles in fiber development in cotton.

关键词： long noncoding RNAs strand specific RNA sequencing fiber transcriptome expression

Experiences and Lessons of Combating COVID-19 that Chinese Experts Shared with the World

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China CDC weekly 2020年第43期2卷 848-850页

作者： Tao Liu Jiufeng Sun Miaoyun Wen youping zhang Xiaodan Luo Xiangxin Liu Shifang Yang Jun Li Guangdong Provincial Institute of Public Health Guangdong Provincial Center for Disease Control and PreventionGuangzhouChina School of Public Health Southern Medical UniversityGuangzhouChina Guangdong Provincial People’s Hospital GuangzhouChina Guangdong Provincial Hospital of Traditional Chinese Medicine GuangzhouChina

At the end of 2019,a novel viral pneumonia was detected in Wuhan City(1)and has spread rapidly throughout 215 countries,areas,and territories with more than 3.8 million cases and over 260,000 deaths as of May 8,*** pn... 详细信息

关键词： Combat COV Wuhan

Genome‑wide characterization of the Rho family in cotton provides insights into fiber development

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Journal of Cotton Research 2022年第3期5卷 228-242页

作者： HE Man WANG Xingfen LIU Shang CHENG Hailiang ZUO Dongyun WANG Qiaolian LV Limin zhang youping SONG Guoli State Key Laboratory of North China Crop Improvement and Regulation Key Laboratory for Crop Germplasm Resources of HebeiHebei Agricultural UniversityBaoding 071000China Institute of Cotton Research of Chinese Academy of Agricultural Sciences Anyang 455000HenanChina Zhengzhou Research Base State Key Laboratory of Cotton BiologyZhengzhou UniversityZhengzhou 450001China.

Background:Cotton is the source of natural fibers globally,fulfilling 90%of the textile industry’s ***,fiber development is a complex biological process comprising four *** develops from a single cell,and cell elongation is a vital process in fiber ***,it is pertinent to understand and exploit mechanisms underlying cell elongation during fiber development.A previous report about cell division control protein 42(CDC-42)with its key role in cell elongation in eukaryotes inspired us to explore its homologs Rho GTPases for understanding of cell elongation during cotton fiber ***:We classified 2066 Rho proteins from 8 Gossypium species into 5 and 8 groups within A and D sub-genomes,*** evolution of Rho members was observed among five *** fixation statistics between two short and long fiber genotypes identified highly diverged regions encompassing 34 Rho genes in ***,and 31 of them were retained through further validation by genome wide association analysis(GWAS).Moreover,a weighted gene co-expression network characterized genome-wide expression patteren of Rho genes based on previously published transcriptome *** Rho genes from five modules were identified as hub genes which were potentially related to fiber *** networks of 5 Rho genes based on transcriptional abundance and gene ontology(GO)enrichment emphasized the involvement of Rho in cell wall biosynthesis,fatty acid elongation,and other biological ***:Our study characterized the Rho proteins in cotton,provided insights into the cell elongation of cotton fiber and potential application in cotton fiber improvement.

关键词： Cotton fiber Cell polarity Rho family Association analysis WGCNA

Technical analysis of producing low Ni pig iron with laterite in a blast furnace

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Baosteel Technical Research 2008年第2期2卷 36-40页

作者： zhang youping Zhou Yusheng Li Zhaoyi Ironmaking Division Baosteel Research Institute Baoshan Iron ＆ Steel Co. Ltd. Shanghai 201900 China

As nickel is mainly used to produce stainless steel, the demand for nickel is increasing. With the steady decline of nickel sulfide ore reserves, laterite will become the main source of nickel. In regards to China＇ s current blast furnace method of producing pig low Ni iron with laterite, this study analyzed the technical characteristics and relevant problems of this process based on the discussion on the characteristics of laterite. The study aims to provide a reference for the better use of laterite in China.

关键词： laterite blast furnace pig iron with a low Ni content

Improved Gossypium raimondii genome using a Hi-C-based proximity-guided assembly

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Journal of Cotton Research 2021年第3期4卷 261-267页

作者： YANG Qiuhong ZUO Dongyun CHENG Hailiang zhang youping WANG Qiaolian JAVARIA Ashraf FENG Xiaoxu LI Simin CHEN Xiaoqin LIU Shang SONG Guoli State Key Laboratory of Cotton Biology Institute of Cotton ResearchChinese Academy of Agricultural SciencesAnyangHenanChina

Introduction:Genome sequence plays an important role in both basic and applied *** raimondii,the putative contributor of the D subgenome of upland cotton(***,highlights the need to improve the genome quality rapidly and ***:We performed Hi-C sequencing of *** and reassembled its genome based on a set of new Hi-C data and previously published *** also compared the reassembled genome sequenee with the previously published G raimondii genomes for gene and genome sequence ***:A total of 9842%of scaffold sequences were clustered successfully,among which 99.72%of the clustered sequences were ordered and 99.92%of the ordered sequences were oriented with *** evaluation of results by heat-map and collinearity analysis revealed that the current reassembled genome is significantly improved than the previous one(Nat Genet 44:98-1103,2012).Conclusion:This improvement in G raimondii genome not only provides a better reference to increase study efficiency but also offers a new way to assemble cotton ***,Hi-C data of *** may be used for 3D structure research or regulating analysis.

关键词： Gossypium raimondii Hi-C Genome assembly Heatmap and collinearity

Map-based cloning of a recessive gene v_1 for virescent leaf expression in cotton(Gossypium spp.)

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Journal of Cotton Research 2018年第2期1卷 35-43页

作者： zhang youping WANG Qiaolian ZUO Dongyun CHENG Hailiang LIU Ke ASHRAF Javaria LI Simin FENG Xiaoxu YU John Z. SONG Guoli State Key Laboratory of Cotton Biology Institute of Cotton Research of Chinese Academy of Agricultural Sciences U.S. Department of Agriculture-Agricultural Research Service (USDA-ARS) Southern Plains Agricultural Research Center College Station

Background： Virescence, as a recognizable phenotype available for research on chloroplast development and in the early development stage of cotton, is not only photosynthesis but also for heterosis exploitation in cotton Methods： In current study, for fine mapping of virescent-1 （V1） in cotton, three populations with a total of 5 678 individuals were constructed using T582 which has the virescent trait. Tobacco rattle virus, TRV1 and TRV2 （pYL156）, were used as vectors for the virus-induced gene silencing （VlGS） assay. Results： The V1 gene was fine-mapped to a 20 kb interval on chromosome 20 of tetraploid cotton. We identified only one candidate gene with four single nucleotide polymorphisms between parents, among which the single nucleotide polymorphism at the position of 1 082 base pair caused the change of amino acid residue from Arg （3-79） to Lys （]-582）. The relative expression of the candidate gene in virescent plants was extensively lower than that in normal plants. Nullification of the gene by VlGS significantly turned the green leaf of normal cotton plants into yellow. We named this candidate gene as GhRVL. Conclusions： This study will facilitate the further research on virescent formation, and will be useful for breeding of hybrid cottons.

关键词： Cotton Virescence T582 VIGS

Technical and economic analysis of Ni-containing hot metal production with laterite in blast furnaces

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Baosteel Technical Research 2012年第2期6卷 27-31页

作者： zhang youping CHU Bin CHEN Yan CHEN Xiangming MA Teng Ironmaking and Sustainability Division Research InstituteBaoshan Iron&Steel Co.Ltd.Shanghai 201900China Stainless Steel Business Unit Baoshan Iron&Steel Co.Ltd.Shanghai 200431China Alloy Developing and Trading Department Baosteel Resources Co.Ltd.Shanghai 200122China

In recent years, many Ni-containing materials manufactured from laterite have played a significant role in supporting the rapid development of the stainless steel industry in China. Currently ,pyrometallurgy is the main process for laterite smelting, where blast furnaces are employed to make Ni-containing hot metal. With the aim of giving some references for making good use of laterite, technical and economic analysis was conducted in this paper, based on the discussion of the key technologies of Ni-containing hot metal production with laterite （50.4% Fe） in blast furnaces.

关键词： latefite blast furnace Ni-containing hot metal technology and economy