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Propositional Calculus System of Medium Logic(Ⅱ)

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数学研究与评论 1988年第3期 457-466页

作者：朱梧槚肖奚安

This paper is a continuation of [1]、[2]、[4]. In this paper, we shall con-tinue to constitute the formal theorems and the important substituting theorem(see theorem 16 in this paper) of the propositional calculus sys... 详细信息

关键词：口口 Propositional Calculus System of Medium Logic

On the Naive Mathematical Models of Medium Mathematical System MM

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数学研究与评论 1988年第1期 139-151页

作者：朱梧槚肖奚安

Introduction The aim of this paper is to explain the practical background and the ideological principles of succeed papers related to medium logic calculus ML and med-ium axiomatic set theory MS on the basis of reference[1]. The succeed papers,which include 15 papers, cover propositional calculus systems of medium logicMP（Ⅰ）-（Ⅲ）and their extention MP（Ⅰ）-（Ⅱ）, predicate calculus systems of medium

关键词： In On the Naive Mathematical Models of Medium Mathematical System MM

Propositional Calculus System of Medium Logic(Ⅲ)

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Journal of Mathematical Research with Applications 1988年第4期 617-631页

作者： xiao xian zhu wujia(Chu W. J. ) meteorology college of the (Nanjing University)Chinese Air Force )

The paper is a continution of [1]、[2]、[4]、[5]. In this paper we shall introduceconjunction symbol"∧", disjunction symbol "∨" and equality value symbol "" asdefining symbols of MP, which are read as "and"、"or"、"if and only if" *** these symbols we shall go on to prove the formal theorems of MP. The list ofthe following formal theorems are in succssion of refernce.

关键词：口口口刁 Propositional Calculus System of Medium Logic AVB

Single-Nucleotide Resolution Mapping of the Gossypium raimondii Transcriptome Reveals a New Mechanism for Alternative Splicing of Introns

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Molecular Plant 2014年第5期7卷 829-840页

作者： Qin Li Guanghui xiao Yu-xian zhu State Key Laboratory of Protein and Plant Gene Research College of Life Sciences Peking University Beijing 100871 China National Center for Plant Gene Research (Beijing) Beijing 100101 China

Alternative splicing （AS） is a vital genetic mechanism that enhances the diversity of eukaryotic transcriptomes. Here, we generated 8.3 Gb high-quality RNA-sequencing data from cotton （Gossypium raimondii） and performed a systematic, comparative analysis of AS events. We mapped 85% of the RNA-sequencing data onto the reference genome and identified 154 368 splice junctions with 16 437 as events in 10197 genes. I ntron retention constituted the majority （40%） of all AS events in G. raimondii. Comparison across 11 eukaryote species showed that intron retention is the most common AS type in higher plants. Although transposable elements （TEs） were found in only 2.9% of all G. raimondii introns, they are present in 43% of the retained introns, suggesting that TE-insertion may be an important mechanism for intron retention during AS. The majority of the TE insertions are concentrated 0-40 nt upstream of the 3＇-splice site, substantially altering the distribution of branch points from preferred positions and reducing the efficiency of intron splicing by decreasing RNA secondary structure flexibility. Our data suggest that TE-insertion-induced changes in branch point-site distribution are important for intron retention-type AS. Our findings may help explain the vast differences in intron-retention frequencies between vertebrates and higher plants.

关键词： cotton RNA-seq alternative splicing transposable element intron retention.

Using Genome-Referenced Expressed Sequence Tag Assembly to Analyze the Origin and Expression Patterns of Gossypium hirsutum Transcripts

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Journal of Integrative Plant Biology 2013年第7期55卷 576-585页

作者： xiang Jin Qin Li Guanghui xiao Yu-xian zhu State Key Laboratory of Protein and Plant Gene Research College of Life SciencesPeking University National Center for Plant Gene Research(Beijing)

We assembled a total of 297,239 Gossypium hirsutum （Gh, a tetraploid cotton, AADD） expressed sequence tag （EST） sequences that were available in the National Center for Biotechnology Information database, with reference to the recently published G. raimondii （Gr, a diploid cotton, DD） genome, and obtained 49,125 UniGenes. The average lengths of the U niGenes were increased from 804 and 791 bp in two previous EST assemblies to 1,019 bp in the current analysis. The number of putative cotton UniGenes with lengths of 3 kb or more increased from 25 or 34 to 1,223. As a result, thousands of originally independent G. hirsutum ESTs were aligned to produce large contigs encoding transcripts with very long open reading frames, indicating that the G. raimondii genome sequence provided remarkable advantages to assemble the tetraploid cotton transcriptome. Significant different distribution patterns within several GO terms, including transcription factor activity, were observed between D- and A-derived assemblies. Tran- scriptome analysis showed that, in a tetraploid cotton cell, 29,547 UniGenes were possibly derived from the D subgenome while another 19,578 may come from the A subgenome. Finally, some of the in silico data were confirmed by reverse transcription polymerase chain reaction experiments to show the changes in transcript levels for several gene families known to play key role in cotton fiber development. We believe that our work provides a useful platform for functional and evolutionary genomic studies in cotton.

关键词： Cotton fiber deep sequencing expressed sequence tag assembly functional genomics Gossypium.

Genome-scale analysis of the cotton KCS gene family revealed a binary mode of action for gibberellin A regulated fiber growth

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Journal of Integrative Plant Biology 2016年第6期58卷 577-589页

作者： Guang-Hui xiao Kun Wang Gai Huang Yu-xian zhu The State Key Laboratory of Protein and Plant Gene Research College of Life Sciences Peking University Beijing 100871 China Institute for Advanced Studies/college of Life Sciences Wuhan University Wuhan 430072 China college of Life Sciences Shaanxi Normal University Xi'an 710062 China

Production of b-ketoacyl-Co A, which is catalyzed by 3-ketoacyl-CoA synthase（KCS）, is the first step in very long chain fatty acid（VLCFA） biosynthesis. Here we identified 58 KCS genes from Gossypium hirsutum, 31 from G. arboreum and 33 from G. raimondii by searching the assembled cotton genomes. The gene family was divided into the plant-specific FAE1-type and the more general ELO-type. KCS transcripts were widely expressed and 32 of them showed distinct subgenome-specific expressions in one or more cotton tissues/organs studied. Six Gh KCS genes rescued the lethality of elo2Δelo3Δ yeast double mutant,indicating that this gene family possesses diversified *** KCS genes with GA-responsive elements（GAREs） in the promoters were significantly upregulated by gibberellin A_3（GA）.Exogenous GA_3 not only promoted fiber length, but also increased the thickness of cell walls significantly. GAREs present also in the promoters of several cellulose synthase（CesA） genes required for cell wall biosynthesis and they were all induced significantly by GA_3. Because GA treatment resulted in longer cotton fibers with thicker cell walls and higher dry weight per unit cell length, we suggest that it may regulate fiber elongation upstream of the VLCFA-ethylene pathway and also in the downstream steps towards cell wall synthesis.

关键词： 3-Ketoacyl-CoA synthase cotton expression patterns gibberellins very long chain fatty acids

Organic nitrogen components in soils from southeast China

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2013年第4期14卷 259-269页

作者： xian-you CHEN Liang-huan WU xiao-chuang CAO Yuan-hong zhu Ministry of Education Key Laboratory of Environmental Remediation and Ecosystem Health College of Environmental and Resource SciencesZhejiang University Zhejiang Provincial Key Laboratory of Subtropical Soil and Plant Nutrition College of Environmental and Resource SciencesZhejiang University Department of Crop and Soil Sciences the Pennsylvania State UniversityUniversity ParkPennsylvania PA 16802USA

Objective:To investigate the amounts of extractable organic nitrogen(EON),and the relationships between EON and total extractable nitrogen(TEN),especially the amino acids(AAs) adsorbed by soils,and a series of other hydrolyzed soil nitrogen indices in typical land use soil types from southeast *** traditional agricultural planting conditions,the functions of EON,especially AAs in the rhizosphere and in bulk soil zones were also ***:Pot experiments were conducted using plants of pakchoi(Brassica chinensis L.) and rice(Oryza sativa L.).In the rhizosphere and bulk soil zone studies,organic nitrogen components were extracted with either distilled water,0.5 mol/L K2SO4or acid ***:K2SO4-EON constituted more than 30% of TEN pools.K2SO4-extractable AAs accounted for 25% of EON pools and nearly 10% of TEN pools in rhizosphere ***,both K2SO4-EON and extractable AAs contents had positive correlations with TEN ***:EON represented a major component of TEN pools in garden and paddy soils under traditional planting *** only a small proportion of the EON was present in the form of water-extractable and K2SO4-extractable AAs,the release of AAs from soil exchangeable sites might be an important source of organic nitrogen(N) for plant *** findings suggest that the content of most organic forms of N was significantly greater in rhizosphere than in bulk soil zone ***,it was also apparent that the TEN pool content was lower in rhizosphere than in bulk soil samples without added N.

关键词： Extractable organic nitrogen Amino acids Rhizosphere Bulk soil

Studies on LCST of poly (N-isopropylacrylamide-co-acrylic acid-co-N-diacetone acrylamide)

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Chinese Chemical Letters 2007年第1期18卷 79-80页

作者： Cai Hua Ni xiao Xia zhu Qing Lan Wang xian Yu Zeng School of Chemical and Material Engineering Southern Yangtze University Wuxi 214036 China Key Laboratory of Functional Polymer Materials School of Chemistry Polymer Institute Nankai University Tianjin 300073 China college of Material Science and Engineering Beijing University of Chemical Technology Beijing 100029 China

Linear copolymers from N-isopropylacrylamide （NIPA）, acrylic acid （AA） and diacetone acrylamide （DAA） have been prepared. The effect of composition, ionic strength and pH on their lower critical solution tempera... 详细信息

关键词： LCST Thermo-responsive N-Isopropylacrylamide N-Diacetone acrylamide

Synthesis, Structure and Fluorescent Property of Coordination Polymer from 4-[（8-Hydroxy-5-quinolinyl）azo]-benzoic Acid

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Chemical Research in Chinese Universities 2013年第6期29卷 1045-1049页

作者： LUO Ya-nan XU xian-zhu ZHANG xiao YU xiao-yang QU xiao-shu YANG Yan-yan SHEN Qi-hui State Key Laboratory of Urban Water Resource and Environment Harbin Institute of TechnologyHarbin 150080 P.R.China college of Chemical and Pharmaceutical Engineering Jilin Institute of Chemical TechnologyJilin 132022 P.R.China

One new coordination polymer based on 4-[（8-hydroxy-5-quinolinyl）azo]-benzoic acid（H2L）, { [CdL（H20）]·H2O}n（1） was solvothermally synthesized and structurally characterized by single-crystal X-ray diffrac- tion, infrared spectrometry, elemental analysis, powder X-ray diffraction（PXRD） and thermogravimetric analysis （TGA）. In compound 1, L2- ligands link Cd（II） to form a sinusoidal ruffling layer, in which the carboxylic groups connect Cd（II） into an infinite Cd--O chain. And the layers are further stabilized by hydrogen bonding and π-π in- teractions, forming a three-dimensional（3D） supramolecular network. In addition, the fluorescent property of compound 1 was also investigated.

关键词： Three-dimensional supramolecular network 4-[(8-Hydroxy-5-quinolinyl)azo]-benzoic acid Fluorescent property