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Some new bound estimates of the Hermitian positive definite solutions of the nonlinear matrix equation X^s+ A~*X^(-t) A = Q

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Journal of Southeast University(English Edition) 2019年第1期35卷 142-146页

作者： cai jing Chen Jianlong School of Mathematics Southeast UniversityNanjing 211189China School of Science Huzhou UniversityHuzhou 313000China

The range and existence conditions of the Hermitian positive definite solutions of nonlinear matrix equations Xs+A*X-tA=Q are studied, where A is an n×n non-singular complex matrix and Q is an n×n Hermitian positive definite matrix and parameters s,t>0. Based on the matrix geometry theory, relevant matrix inequality and linear algebra technology, according to the different value ranges of the parameters s,t, the existence intervals of the Hermitian positive definite solution and the necessary conditions for equation solvability are presented, respectively. Comparing the existing correlation results, the proposed upper and lower bounds of the Hermitian positive definite solution are more accurate and applicable.

关键词： nonlinear matrix equation Hermitian positive definite solution solution bound matrix inequality

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Preliminary feasibility and hemodynamic performance of a newlydeveloped self-expanding bioprosthesis and 16-F delivery system in transcatheter aortic valve implantation in sheep

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The Journal of Biomedical Research 2012年第3期26卷 211-218页

作者： jing cai Yanhui Sheng Shijiang Zhang Wei Sun Rong Yang Liping Miao Xiangqing Kong Department of Cardiology the First Affiliated Hospital Nanjing Medical University Nanjing Jiangsu 210029 China. Department of Cardiac Surgery the First Affiliated Hospital Nanjing Medical University Nanjing Jiangsu 210029 China.

We sought to evaluate the feasibility and hemodynamic performance of a new self-expanding bioprosthesis and 16-F delivery system in sheep. A 23-mm new self-expanding aortic bioprosthesis was implanted in sheep （n = 10） with a 16-F catheter via the right common carotid artery, Each sheep underwent angiography and coronary angiography before intervention, immediately and 1 h after stent implantation. Electrocardiographic monitoring was carded out during and 2 h after the procedure. Transthoracic echocardiography was employed to detect he- modynamic performance before intervention, immediately and 1 and 2 h after stent implantation. All sheep were euthanized 2 h after successful implantation for macroscopic inspection. In all cases, the new self-expanding aortic bioprosthesis was successfully delivered to the aortic root and released with a 16-F catheter. Successful implantation was achieved in 8 of 10 sheep. Hemodynamic performance and device position of successful implantation were stable 2 h after device deployment. Atrioventricular block was not observed. We conclude that it is feasible to implant the new self-expanding aortic valve with a 16-F delivery system into sheep hearts via the retrograde route.

关键词： percutaneous self-expanding bioprothesis aortic valve sheep

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The tumor-selective over-expression of the human Hsp 70 gene is attributed to the aberrant controls at both initiation and elongation levels of transcription

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Cell Research 2003年第2期13卷 93-109页

作者： LING cai, jing DE ZHU,The State-key Laboratory for Oncogenes and Related Genes, Shanghai Cancer Institute, LN 25/2200, Xie-tu Road, Shanghai 200032, China Cancer Genetics and Gene Therapy The State-key Laboratory for Oncogenes and Related Genes Shanghai Cancer Institute Shanghai Jiao Tong University LN 25/2200 Shanghai China

The tumor selective over-expression of the human Hsp70 gene has been well documented in human tumors, linked to the poor prognosis, being refractory to chemo- and radio-therapies as well as the advanced stage of tumorous lesions in particular. However, both the nature and details of aberrations in the control of the Hsp70 expression in tumor remain enigmatic. By comparing various upstream segments of the Hsp70 gene for each’s ability to drive the luciferase reporter genes in the context of the tumor cell lines varying in their p53 status and an immortal normal liver cell line, we demonstrated in a great detail the defects in the control mechanisms at the both initiation and elongation levels of transcription being instrumental to the tumor selective profile of its expression. Our data should not only offer new insights into our understanding of the tumor specific over-expression of the human Hsp70 gene, but also paved the way for the rational utilization of the tumor selective mechanism with the Hsp70 a

关键词： Hsp 70 Tumor transcription elongation 5’ UTR. Over-expression.

A 2.833-kb Insertion in BnFLC.A2 and Its Homeologous Exchange with BnFLC.C2 during Breeding Selection Generated Early-Flowering Rapeseed

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Molecular Plant 2018年第1期11卷 222-225页

作者： Lei Chen Faming Dong jing cai Qiang Xin Caochuang Fang Liang Liu Lili Wan Guangsheng Yang Dengfeng Hong National Key Lab of Crop Genetic Improvement Huazhong Agricultural University Wuhan 430070 China College of Plant Science and Technology Huazhong Agricultural University Wuhan 430070 China These authors contributed equally to this article.

Dear Editor,Rapeseed （Brassica napus） was formed on the Mediterranean coast approximately 7500 years ago （Chalhoub et al., 2014）. Natural variations and artificial selections in flowering time have greatly promoted its spread to subtropical and temperate regions, making B. napus a major source of both vegetable oil and animal feed worldwide. Many studies have been conducted over the past two decades toward understanding the genetic architecture of flowering time in B. napus. However, largely restricted by the complicated allotetraploid genome, molecular basis of flowering time variation remains poorly understood in rapeseed.

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Cyclization mechanism of monoterpenes catalyzed by monoterpene synthases in dipterocarpaceae

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Synthetic and Systems Biotechnology 2024年第1期9卷 11-18页

作者： Xiaoyun Lu Jie Bai Zunzhe Tian Congyu Li Nida Ahmed Xiaonan Liu Jian Cheng Lina Lu jing cai Huifeng Jiang Wen Wang School of Ecology and Environment Northwestern Polytechnical UniversityXi’anShanxi710072China Key Laboratory of Engineering Biology for Low-Carbon Manufacturing Tianjin Institute of Industrial BiotechnologyChinese Academy of SciencesTianjin300308China

Monoterpenoids are typically present in the secretory tissues of higher plants,and their biosynthesis is catalyzed by the action of monoterpene synthases(MTSs).However,the knowledge about these enzymes is restricted in a few plant *** are responsible for the complex cyclization of monoterpene precursors,resulting in the production of diverse monoterpene *** enzymatic reactions are considered exceptionally complex in ***,it is crucial to understand the catalytic mechanism of MTSs to elucidate their ability to produce diverse or specific monoterpenoid *** our study,we analyzed thirteen genomes of Dipterocarpaceae and identified 38 MTSs that generate a variety of monoterpene *** focusing on four MTSs with different product spectra and analyzing the formation mechanism of acyclic,monocyclic and bicyclic products in MTSs,we observed that even a single amino acid mutation can change the specificity and diversity of MTS products,which is due to the synergistic effect between the shape of the active cavity and the stabilization of carbon-positive intermediates that the mutation ***,residues N340,I448,and phosphoric acid groups were found to be significant contributors to the stabilization of intermediate terpinyl and pinene *** in these residues,either directly or indirectly,can impact the synthesis of single monoterpenes or their *** revealing the role of key residues in the catalytic process and establishing the interaction model between specific residues and complex monoterpenes in MTSs,it will be possible to reasonably design and engineer different catalytic activities into existing MTSs,laying a foundation for the artificial design and industrial application of MTSs.

关键词： Cyclization Monoterpene synthases Intermediate stabilization

The Construction of Big Enterprises' Tax Risk Management Inner Control System-Based on COSO Inner Control Structure

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The Construction of Big Enterprises' Tax Risk Management Inn...

作者： cai De-fa JIANG Yuan cai jing Harbin Commercial University Dalian fish university

Big enterprises are of the characteristics of small numbers,large scales,huge taxes and contributions,which is the core of tax collecting *** strengthen the tax risk management ideas,and to direct taxpayers to perfect the inner tax control system are the important measures to implement individual services and pertinent *** show that the big enterprises can build inner tax control system based on COSO structure.

关键词： Big enterprises Tax risk management COSO inner control structure inner control system

来源： cnki会议评论

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我国环境监察执法组织的改革趋势探讨

中国人口·资源与环境 2009年第4期19卷 30-35页

作者：蔡晶晶中国人民大学公共管理学院北京100872

环境监察执法组织作为政府职能部门,代表国家履行环境监管的职责,其组织设置既受到我国整体行政管理体制改革和发展趋势的影响,又要反映出履行自身特殊业务的客观要求。文章首先分析了环境监察执法组织的宏观环境,并从组织结构要素和优... 详细信息

环境监察执法组织作为政府职能部门,代表国家履行环境监管的职责,其组织设置既受到我国整体行政管理体制改革和发展趋势的影响,又要反映出履行自身特殊业务的客观要求。文章首先分析了环境监察执法组织的宏观环境,并从组织结构要素和优化组织功能的角度指出了环境监察执法组织改革所涉及到的规模、流程、战略、技术与劳动力因素,最后根据公共组织的固有特点和环境保护的特殊性提出了涉及体制、结构、工具和对象等五个方面的改革原则。文章结论认为,环境执法作为一项比较新的政府管理职能,要使它有效应对我国目前日益严峻的环境问题,就需要从相关的体制、职权、方式上入手,对环境监察执法组织进行系统创新。

关键词：环境监察执法组织改革趋势

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Nitrogen addition frequency and propagule pressure influence Solidago canadensis invasion into native plant community

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Ecosystem Health and Sustainability 2022年第1期8卷 342-351页

作者： Xuan-Shao Liu jing-Fang cai Lin Liu Kai Sun Fan Jiang Yi-Luan Shen Si-Ha A Hong-Li Li The Key Laboratory of Ecological Protection in the Yellow River Basin of National Forestry and Grassland Administration School of Ecology and Nature ConservationBeijing Forestry UniversityBeijingChina

Introduction:Propagule pressure(i.e.,the number of propagules)has long been recognized to play an essential role in plant *** it is not clear whether propagule pressure influences the invasion of exotic plants into native plant communities when different frequencies of nitrogen are ***:We established an experiment with three plant communities that included native plant communities alone(four grasses,two legumes and two forbs)or native plant communities with one or five invasive plants,Solidago canadensis,under three frequencies of nitrogen addition(no addition or low or high addition with the same amount).Results:High propagule pressure significantly enhanced the biomass and relative dominance index of ***,high propagule pressure only decreased the total and aboveground biomass of the ***,the competitive effect between *** and the native community and biomass of the whole native community varied according to different ***:Overall,high propagule pressure encouraged invasion by ***,while alow nitrogen frequency was advantageous for the native community to resist invasion in this *** results provide a scientific basis to manage and control the invasion of ***.

关键词： clonal plants invasiveness nitrogen addition level propagule number

Plasma DNA methylation of Wnt antagonists predicts recurrence of esophageal squamous cell carcinoma

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World Journal of Gastroenterology 2011年第44期17卷 4917-4921页

作者： Ji-Bin Liu Fu-Lin Qiang jing Dong Jin cai Shu-Hui Zhou Min-Xin Shi Ke-Ping Chen Zhi-Bin Hu Institute of Life Science Jiangsu University Zhenjiang 212013 Jiangsu Province China

AIM:To detect the effects of plasma DNA methylation of Wnt antagonists/inhibitors on recurrence of esophageal squamous cell carcinoma(ESCC).METHODS:We used methylation-specific polymerase chain reaction to detect hypermethylation of the promoter of four Wnt antagonists/inhibitors(SFRP-1,WIF-1,DKK-3 and RUNX3) using DNA from the plasma of ESCC patients(n = 81) and analyzed the association between promoter hypermethylation of Wnt pathway modulator genes and the two-year recurrence of ***:Hypermethylation of SFRP-1,DKK-3 and RUNX-3 was significantly associated with an increased risk of ESCC recurrence(P = 0.001,0.003 and 0.001 for SFRP-1,DKK-3 and RUNX3,respectively).Patients carrying two to three methylated genes had a significantly elevated risk of recurrence compared with those not carrying methylated genes(odds ratio = 15.69,95% confidential interval:2.97-83).The area under the receiver operating characteristic curve(AUC) was 77.1 for ESCC recurrence prediction(sensitivity = 66.67 and specificity = 83.3).When combining methylated genes and the clinical stage,the AUC was 83.69,with a sensitivity of 76.19 and a specificity of ***:The status of promoter hypermethylation of Wnt antagonists/inhibitors in plasma may serve as a non-invasive prognostic biomarker for ESCC.

关键词： Plasma Methylation Esophageal Cancer Recurrence