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Image Field Deformation of LAMOST due to Differential Atmospheric Refraction

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Chinese Journal of Astronomy and Astrophysics 2006年第4期6卷 495-502页

作者： Jin-Ling Li Bo Zhang Yong Yu zhao-Xiang qi ming zhao Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai 200030

A vectorial expression of the image field deformation of LAMOST due to the differential atmospheric refraction is presented. The calculated results are compared with those from previous analyses based on the traditional spherical trigonometric formulas. It is demonstrated that different tangential displacements of star images during the observation tracking given by various authors are simply due to different reference points adopted. It is pointed out that the observational celestial pole is the center of the apparent diurnal motion, that, by referring to the observational celestial pole, the effect of the differential refraction on the image field of LAMOST during the 1.5-hour tracking period is approximately equivalent to a constant rotation of - 13.65″ for all declination belts. It is therefore unnecessary to design a particular tracking velocity for each observation, and this will be obviously advantageous to the observation implementation. If the maximum tracking error of the fibers is 0.2″, then the fibers are required to be able to re-position during observational tracking for sky regions south of declination ＋20° and north of declination ＋60°.

关键词： telescopes -- atmospheric effects -- methods: analytical-- methods: statistical-- astrometry

Effect of surface acidity and pore size of Al-substituted plugs-containing SBA-15 and MCM-41 silicas on the polymerization of THF

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Chinese Chemical Letters 2011年第1期22卷 105-108页

作者： Zhi qi Jia ming zhao Chun Guang Gao Yong Xiang zhao School of Chemistry and Chemical Engineering Shanxi University Engineering Research Center for Fine Chemicals of Ministry of Education Taiyuan 030006 China

We reported here the simultaneous influence of surface acidity and pore size of M-substituted hexagonal mesoporous silicas （Al- doped plugs-containing SBA-15 and M-doped MCM-41） on polymerization of THE These materials were directly synthesized by introduced aluminum isopropoxide into reaction mixture including surfactant and siliceous precursor. Al-doped plugs-containing SBA-15 （denotes as PAS） samples not only possess typical two-step desorption isotherms, which implied PAS materials generated plugs in their mesochannel, but also exhibit larger pore size and thicker wall than that of Al-doped MCM-41 （denotes as ACM）, which implied PAS would have a great advantage on catalytic reaction involving large molecular （e.g. polymer of THF） in industrial point＇of view. To investigate catalytic activity of PAS and ACM with moderate acidic sites the polymerization of THF in the presence of acetic anhydride was carried out. The results showed PAS exhibiting good performance on polymerization of THF. Such result could be related to the large pore size and moderate acidic sites.

关键词： Hexagonal mesostructure Polymerization THF Acidity Pore size

大豆种质资源萌发期耐莠去津鉴定评价及优异种质筛选

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作物学报 2024年第7期50卷 1699-1709页

作者：李晓菲高华伟广慧石宇欣谷勇哲齐照明邱丽娟东北农业大学农学院黑龙江哈尔滨150030 农作物基因资源与遗传改良国家重大科学工程/农业农村部种质资源利用重点实验室/中国农业科学院作物科学研究所北京100081 三亚中国农业科学院国家南繁研究院海南三亚572024 黑龙江护理高等专科学校黑龙江哈尔滨150028 哈尔滨师范大学生命科学与技术学院黑龙江哈尔滨150025

室内生物测定是农作物除草剂耐受性鉴定的常用方法,已广泛应用于大豆、棉花等作物对草甘膦、氯嘧磺隆等除草剂的耐受性研究,但莠去津室内生测方法及大豆对莠去津耐受性相关研究鲜见报道。本研究以莠去津对大豆萌发期各单项指标为评价指... 详细信息

室内生物测定是农作物除草剂耐受性鉴定的常用方法,已广泛应用于大豆、棉花等作物对草甘膦、氯嘧磺隆等除草剂的耐受性研究,但莠去津室内生测方法及大豆对莠去津耐受性相关研究鲜见报道。本研究以莠去津对大豆萌发期各单项指标为评价指标,分析莠去津胁迫条件下大豆发芽势、发芽率、发芽指数、活力指数、根长等性状的变化,建立大豆莠去津耐受性室内生测方法,确定3.5 mL L^(-1)是大豆萌发期莠去津耐受性筛选的适宜浓度;对159份大豆种质进行萌发期莠去津耐受性鉴定表明,各指标相对值的变异系数为发芽相对莠去津胁迫率>相对芽长>相对发芽指数>相对活力指数>相对发芽势>相对发芽率;根据T值的聚类分析,将供试种质分为4个莠去津耐性级别,共鉴定出高耐种质9份、中耐种质50份、低耐种质70份和敏感种质30份;黄豆、花色豆、垦丰13、南农99-6等9个种质为莠去津耐受性综合能力优异的种质资源。采用多元逐步回归分析法,建立大豆萌发期耐莠去津评价模型Y=–0.155+0.004X_(2)+0.001X_(3)+0.001X_(4)+0.002X_(5)(P=0.000)。本研究为培育耐莠去津育种的亲本选配、后代选择及大豆耐莠去津相关基因挖掘提供了理论依据、材料和技术支撑。

关键词：大豆种质资源莠去津耐性萌发期综合评价

Meta-analysis of soybean amino acid QTLs and candidate gene mining

同方期刊数据库博看期刊评论

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Journal of Integrative Agriculture 2018年第5期17卷 1074-1084页

作者： GONG qian-chun YU Hong-xiao MAO Xin-rui qi Hui-dong SHI Yan XIANG Wei CHEN qing-shan qi zhao-ming Key Laboratory of Soybean Biology Ministry of Education/College of AgricultureNortheast Agricultural University

The composition and quantity of amino acids influence the protein content and nutritional value of soybeans and also have an important impact upon soybean quality. After integrating and proofreading 140 original QTLs associated with amino acid contentfrom soybase（http：//***/）, 138 QTLs were further analyzed to determine high-confidence QTL regions. Meta-analysis was first carried out using the Bio Mercator ver. 2.1 software, yielding 33 consensus QTLs. The consensus QTL confidence intervals（CIs） ranged from 0.07 to 19.85 Mb. Next, the overview method was used to optimize the CIs, and 57 ＂real＂ QTLs were mapped. Candidate genes in the consensus QTL regions were obtained from Phytozome and were annotated using the Gene Ontology（GO）, Kyoto Encyclopedia of Genes and Genomes（KEGG）, Swissprot, and gene annotation databases. Finally, 16 unpublished candidate genes controlling the content of five types of amino acids were identified with Blast. These results laid the foundation for fine mapping of soybean amino acid-related QTLs and marker-assisted selection.

关键词： soybean amino acid QTLs meta-analysis overview analysis candidate genes

一种O/W型聚氨酯水性外脱模剂的制备及性能研究

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西南民族大学学报（自然科学版） 2024年第3期50卷 283-288页

作者：陈晓赵启明陶璐华洪叶汪灿张文蕊西南民族大学化学与环境学院微流体合成与分离实验室四川成都610225 西南民族大学化学与环境学院化学基础国家民委重点实验室四川成都610225

传统油基脱模剂含有可能对环境产生污染的有机溶剂,随着全球环保意识的增强,更为绿色环保无毒的水性脱模剂逐渐成为研究热点.为了开发汽车内饰使用的新型脱模剂,以二甲基硅油、含氢硅油等为主要原料,制备出一种O/W型聚氨酯水性外脱模剂... 详细信息

传统油基脱模剂含有可能对环境产生污染的有机溶剂,随着全球环保意识的增强,更为绿色环保无毒的水性脱模剂逐渐成为研究热点.为了开发汽车内饰使用的新型脱模剂,以二甲基硅油、含氢硅油等为主要原料,制备出一种O/W型聚氨酯水性外脱模剂.通过测定脱模剂样品性能,探讨了主脱模剂种类及配比、乳化体系复配比例对脱模剂性能的影响.采用能谱仪(EDS)对脱模后的聚氨酯泡沫表面进行元素分析.结果表明:二甲基硅油和含氢硅油按照1∶1配比作为基础聚合物,固含量19.41%,采用非离子表面活性剂SP⁃80、TW⁃80复合乳化体系制备的O/W型聚氨酯水性外脱模剂稳定性最好,脱模后的聚氨酯泡沫表面没有Si元素残留,具有最佳脱模效果.

关键词： O/W型乳液水性外脱模剂聚氨酯发泡脱模效果稳定性

维普期刊数据库博看期刊

An Integrated QTL Map of Fungal Disease Resistance in Soybean (Glycine max L. Merr):A Method of Meta-Analysis for Mining R Genes

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Agricultural Sciences in China 2010年第2期9卷 223-232页

作者： WANG Jia-lin LIU Chun-yan WANG Jing qi zhao-ming LI Hui HU Guo-hua CHEN qing-shan College of Agriculture Northeast Agricultural University Harbin 150030 P.R.China Land Reclamation Research ＆ Breeding Centre of Heilongjiang Harbin 150090 P.R.China The National Research Center of Soybean Engineering and Technology Harbin 150050 P.R.China College of Science Northeast Agricultural University Harbin 150030 P.R.China

Diseases caused by fungal pathogens account for approximately 50% of all soybean disease losses around the world. Conflicting results of fungal disease resistance QTLs from different populations often occurred. The objectives of this study were to：（i） evaluate evidence for reported fungal disease resistance QTLs associations in soybean and （ii） extract relatively reliable and useful information from the ＂real＂ QTLs and mine putative genes in soybean. An integrated map of fungal disease resistance QTLs in soybean was established with soymap 2 published in 2004 as a reference map. QTLs of fungal disease resistance developed from each of separate populations in recent 10 years were integrated into a combinative map for gene cloning and marker assisted selection in soybean. 107 QTLs from different maps were integrated and projected to the reference map with the software BioMercator 2.1. A method of meta-analysis was used to narrow down the confidence interval, and 23 ＂real＂ QTLs and their corresponding markers were obtained from 12 linkage groups （LG）, respectively. Two published R genes were found in these ＂real＂ QTLs intervals. Sequences in the ＂real＂ QTLs intervals were predicted by GENSCAN, and these predicted genes were annotated in Goblet. 228 resistance gene analogs （RGAs） in 12 different terms were mined. The results will lay the foundation for a bioinformatics platform combining abundant QTLs, and offer the basis for marker assisted selection and gene cloning in soybean.

关键词： soybean fungal disease QTL meta-analysis resistance gene analogs

Dynamic interwell connectivity analysis of multi-layer waterflooding reservoirs based on an improved graph neural network

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Petroleum Science 2024年第2期21卷 1062-1080页

作者： zhao-qin Huang zhao-Xu Wang Hui-Fang Hu Shi-ming Zhang Yong-Xing Liang qi Guo Jun Yao School of Petroleum Engineering China University of Petroleum(East China)Qingdao266580ShandongChina Exploration and Development Research Institute Shengli OilfieldSINOPECDongying257015ShandongChina

The analysis of interwell connectivity plays an important role in the formulation of oilfield development plans and the description of residual oil distribution. In fact, sandstone reservoirs in China's onshore oilfields generally have the characteristics of thin and many layers, so multi-layer joint production is usually adopted. It remains a challenge to ensure the accuracy of splitting and dynamic connectivity in each layer of the injection-production wells with limited field data. The three-dimensional well pattern of multi-layer reservoir and the relationship between injection-production wells can be equivalent to a directional heterogeneous graph. In this paper, an improved graph neural network is proposed to construct an interacting process mimics the real interwell flow regularity. In detail, this method is used to split injection and production rates by combining permeability, porosity and effective thickness, and to invert the dynamic connectivity in each layer of the injection-production wells by attention *** on the material balance and physical information, the overall connectivity from the injection wells,through the water injection layers to the production layers and the output of final production wells is established. Meanwhile, the change of well pattern caused by perforation, plugging and switching of wells at different times is achieved by updated graph structure in spatial and temporal ways. The effectiveness of the method is verified by a combination of reservoir numerical simulation examples and field example. The method corresponds to the actual situation of the reservoir, has wide adaptability and low cost, has good practical value, and provides a reference for adjusting the injection-production relationship of the reservoir and the development of the remaining oil.

关键词： Graph neural network Dynamic interwell connectivity Production-injection splitting Attention mechanism Multi-layer reservoir

Meta-Analysis of 100-Seed Weight QTLs in Soybean

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Agricultural Sciences in China 2011年第3期10卷 327-334页

作者： qi zhao-ming SUN Ya-nan WANG Jia-lin ZHANG Da-wei LIU Chun-yan HU Guo-hua CHEN qing-shan Northeast Agricultural University Harbin 150030 P.R. China The Crop Research and Breeding Center of Land-Reclamation Harbin 150090 P.R.China

100-seed weight is a very complicated quantitative trait of yield. The study of gene mapping for yield trait in soybean is very important for application. However, the mapping result of 100-seed weight was dispersed, the public map should be chosen which was suitable for the published results integrated, and to improve yield. In this research, an integrated map of 100-seed weight QTLs in soybean had been established with soymap2 published in 2004 as a reference map. QTLs of 100-seed weight in soybean were collected in recent 20 yr. With the software BioMercator 2.1, QTLs from their own maps were projected to the reference map. From published papers, 65 QTLs of 100-seed weight were collected and 53 QTLs were integrated, including 17 reductive effect QTLs and 36 additive effect QTLs. 12 clusters of QTLs were found in the integrated map. A method of meta-analysis was used to narrow down the confidence interval, and 6 additive QTLs and 6 reductive QTLs and their corresponding markers were obtained respectively. The minimum confidence interval （C.I.） was shrunk to 1.52 cM. These results would lay the foundation for marker-assisted selection and mapping QTL precisely, as well as QTL gene cloning in soybean.

关键词： soybean 100-seed weight meta-analysis consensus QTL marker assisted selection

Identification of novel soybean oil content-related genes using QTL-based collinearity analysis from the collective soybean genome

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Journal of Integrative Agriculture 2018年第8期17卷 1727-1735页

作者： XU ming-yue LIU Zhang-xiong qiN Hong-tao qi Hui-dong WANG Zhong-yu MAO Xin-rui XIN Da-wei HU Zhen-bang WU Xiao-xia JIANG Hong-wei qi zhao-ming CHEN qing-shan Key Laboratory of Soybean Biology Ministry of Education/College of AgricultureNortheast Agricultural University National Key Facility for Crop Gene Resources and Genetic Improvement(NFCRI)/Key Laboratory of Germplasm Utilization Ministry of Agriculture/Institute of Crop SciencesChinese Academy of Agricultural Sciences

Soybean is a global principal source of edible plant oil. As more soybean oil-related quantitative trait loci(QTLs) have been located in the collective genome, it is urgent to establish a classification system for these distributed QTLs. A collinear platform may be useful to characterize and identify relationships among QTLs as well as aid in novel gene discovery. In this study, the collinearity MCScan X algorithm and collective soybean genomic information were used to construct collinearity blocks, to which soybean oil-related QTLs were mapped. The results demonstrated that 666 collinearity blocks were detected in the soybean genome across 20 chromosomes, and 521 collinearity relationships existed in 231 of the 242 effective soybean oil-related QTLs. This included 214 inclusion relationships and 307 intersecting relationships. Among them, the collinearity among QTLs that are related to soybean oil content was shown on a maximum of seven chromosomes and minimum of one chromosome, with the majority of QTLs having collinearity on two chromosomes. Using overlapping hotspot regions in the soybean oil QTLs with collinearity, we mined for novel oil content-related genes. Overall, we identified 23 putatively functional genes associated with oil content in soybean and annotated them using a number of annotation databases. Our findings provide a valuable framework for elucidating evolutionary relationships between soybean oil-related QTLs and lay a foundation for functional marker-assisted breeding relating to soybean oil content.

关键词： soybean oil QTLs collinearity analysis candidate genes