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Journal of Environmental Protection 2023年第1期14卷 16-31页

作者： Wei Zhang qizheng You Jinkai Shu Aihe wang Hai Lin Xuchao Yan School of Municipal and Mapping Engineer Hunan City University Yiyang China School of Municipal and Environmental Engineering Shenyang Jianzhu University Shenyang China Hunan Provincial Village Drinking Water Quality Safety Engineering Technology Research Center Yiyang China Yiyang City Commodity Quality Supervision and Inspection Institute Yiyang China

A new composite photocatalyst of modified oyster shell powder/Ce-N-TiO2 was prepared by sol-gel method. Based on single factor experiment, Ce doping rate, N doping rate and calcination temperature were taken as input variables. Based on the central composite design (BBD) response surface model, two functional relationship models between three independent variables and glyphosate removal rate were established to evaluate the influence degree of independent variables and interaction on catalyst. The significance of the model and regression coefficient was tested by variance analysis. The analysis of the obtained data showed that the degradation performance of the composite photocatalyst was significantly affected by the calcination temperature and the rate of N doping, while the rate of Ce doping had little effect;at the calcination temperature of 505.440°C, the degradation rate of glyphosate reached the maximum of 82.15% under the preparation conditions of 17.057 mol% N doping and 0.165 mol% Ce doping, respectively.

关键词： Modified Titanium Dioxide Response Surface Methodology (RSM) Photocatalysis Glyphosate

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影像组学在骨肿瘤中的临床研究进展

磁共振成像 2020年第10期11卷 957-960页

作者：刘珂张恩龙王奇政陈永晔张家慧郎宁北京大学第三医院放射科北京100191 北京大学国际医院放射科北京102206

随着人工智能技术与精准医学概念的兴起,传统影像学诊断模式逐渐难以满足个性化医疗活动的需要。通过高通量定量特征提取方法,将图像转换为可挖掘的数据,利用机器学习算法对数据进行分析以提供临床决策支持的影像组学受到了广泛关注。... 详细信息

随着人工智能技术与精准医学概念的兴起,传统影像学诊断模式逐渐难以满足个性化医疗活动的需要。通过高通量定量特征提取方法,将图像转换为可挖掘的数据,利用机器学习算法对数据进行分析以提供临床决策支持的影像组学受到了广泛关注。现有不少研究尝试将影像组学应用于骨肿瘤临床诊疗中。笔者将着重从应用角度对影像组学技术方法作简要概述,详细介绍影像组学在骨肿瘤诊断鉴别诊断、分级分型、预后预测及基因分析方面的研究进展,并提出目前所面临的挑战及未来发展方向。

关键词：骨肿瘤影像组学特征提取机器学习

Role of Ppt1 in multiple stress responses in Candida albicans

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Chinese Science Bulletin 2014年第31期59卷 4060-4068页

作者： Kangdi Hu Wanjie Li Jiaxin Gao qizheng Liu Haitao wang Yue wang Jianli Sang Key Laboratory of Cell Proliferation and Regulation Biology Ministry of EducationCollege of Life ScienceBeijing Normal University School of Biotechnology and Food Engineering Hefei University of Technology Institute of Molecular and Cell Biology Agency for ScienceTechnology and Research (A*STAR)

To study the function of CaPpt1,we deleted PPT1 gene from the Candida albicans genome by sequentially replacing the entire coding region with the selectable markers ARG4 and *** results showed that the deletion of Ppt1 did not affect the hyphal formation of *** under serum induction and caused enhanced sensitivity to DNA damage,Calcofluor white and saltinduced *** also found that Ppt1 was not required for the phenotypic response of cells treated with the genotoxins,methylmethane sulfonate and *** cytometric analyses indicated that ppt1D cells and wild-type cells showed similar G2/M arrest profiles when exposed to DNA damage ***1 was not required for the activation of the DNA damage response pathway,as indicated by normal phosphorylation of Rad53 and Rfa2 in ppt1D cells under DNA damage *** suggest that Ppt1 plays important roles in response to various stress conditions in ***.

关键词：白色念珠菌应激反应流式细胞分析 DNA损伤选择性标记基因组胁迫条件编码区

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直链/支链比对青稞淀粉凝胶与消化性的影响

核农学报 2024年第9期38卷 1627-1635页

作者：石丽王学兵孙若琪刘永慧田亚凝王桐王丽丽王凤忠山西农业大学食品科学与工程学院山西晋中030801 中国农业科学院农产品加工研究所北京100193 西藏奇正青稞健康科技有限公司西藏拉萨851400

为深入探讨不同直链/支链比例对淀粉凝胶特性和消化行为的影响,本研究选取糯青稞和普通青稞品种,通过提取淀粉并复配制备直链/支链比例8%、14%、20%、25%的青稞淀粉,比较其在结晶结构、糊化特性、凝胶特性以及消化性方面的差异。结果表... 详细信息

为深入探讨不同直链/支链比例对淀粉凝胶特性和消化行为的影响,本研究选取糯青稞和普通青稞品种,通过提取淀粉并复配制备直链/支链比例8%、14%、20%、25%的青稞淀粉,比较其在结晶结构、糊化特性、凝胶特性以及消化性方面的差异。结果表明,直链/支链比例未改变青稞淀粉的晶型,但直链/支链比例的增加降低了结晶度,使淀粉内部结构更紧密、双螺旋结构更稳定。同时,随着直链/支链比例的增加,淀粉糊化时的峰值黏度(3296~4226 mPa·s)逐渐降低、回生值(481.67~1604.33 mPa·s)逐渐增加。流变学结果表明,淀粉存在弱凝胶行为(G′>G″),淀粉凝胶的弹性行为增强会增加硬度和咀嚼度。消化特性方面,直链/支链比例的增加会增加抗性淀粉含量,降低快速消化淀粉含量、淀粉消化率和预估血糖生成指数。本研究结果对开发具有特定工业用途的功能性“定制”青稞淀粉具有一定的理论价值。

关键词：直链/支链比例晶体结构糊化特性凝胶特性体外消化性

Epidemics,Convergence,and Common Prosperity:Evidence from China

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China & World Economy 2021年第6期29卷 117-138页

作者： Zesen Qian Lingran Yuan Shuo wang qizheng Zhang Binlei Gong School of Economics Zhejiang UniversityChina School of Public Affairs Zhejiang UniversityChina Academy of Social Governance and China Academy for Rural Development Zhejiang UniversityChina

This article investigates the impact of previous epidemics on rural development and convergence,and identifies the impacts mechanism based on convergence *** a balanced panel of 31 provinces,the empirical results from 2002 to 2019 show that epidemics decelerated convergence in rural per capita *** mechanism analysis shows that the accelerated divergence in wages and the decelerated convergence in business income were the major drivers,which also led to decelerated convergence in rural per capita *** epidemics have not threatened rural food consumption and the Engel coefficient of rural households,these two indicators of basic living needs have failed to achieve convergence across *** overall impact of an epidemic on convergence in rural-urban income disparity has also been insignificant,indicating that epidemics have affected rural and urban development ***,COVID-19 is likely to decelerate convergence in rural income,rural consumption,and urban income.

关键词： common prosperity epidemics regional disparity rural convergence ruralurban disparity

动态对比增强磁共振在肿瘤预后预测中的研究进展

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磁共振成像 2019年第7期10卷 556-560页

作者：王奇政陈永晔张恩龙张家慧郎宁袁慧书北京大学第三医院放射科北京100191 北京大学国际医院放射科北京102206

近些年来,在临床诊疗过程中,肿瘤性疾病的预后预测受到重视。而目前通过多模态磁共振成像对肿瘤疾病进行预后预测的研究有较多进展。动态对比增强磁共振作为多模态磁共振的一种,以肿瘤组织微血管系统灌注和渗透为基础,通过连续、快速的... 详细信息

近些年来,在临床诊疗过程中,肿瘤性疾病的预后预测受到重视。而目前通过多模态磁共振成像对肿瘤疾病进行预后预测的研究有较多进展。动态对比增强磁共振作为多模态磁共振的一种,以肿瘤组织微血管系统灌注和渗透为基础,通过连续、快速的成像方法,获取注入对比剂前后的图像,结合半定量及定量分析,从微循环角度分析病变的微观情况,进而评价肿瘤的特征,在肿瘤性疾病的预后预测中得到颇多应用。作者就动态对比增强磁共振在肿瘤疾病预后预测中的研究进展进行综述,阐明其临床应用价值。

关键词：肿瘤微血管磁共振成像预后生存状况

Gut microbiota have blood types as human

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Science Bulletin 2018年第20期63卷 1311-1313页

作者： qizheng Wu Hui Zhong Yafei Zhai Yanjiong Jia Zhinan Yin Min Chen Hengwen Yang Peng George wang The State Key Laboratory of Microbial Technology and National Glycoengineering Research Center Shandong University The First Affiliated Hospital Biomedical Translational Research Institute Guangdong Province Key Laboratory of Molecular Immunology and Antibody EngineeringJinan University

ABO blood group system was firstly recognized by Landsteiner in 1900[1].Since then,the antigens of the ABO system (A,B and H determinants,respectively)have been shown to encompass complex carbohydrate structures [2].A and B antigen were synthesized by the sequential action of glycosyltransferases,with A and B glycosyltransferases catalyzing the addition of N-acetylgalactosamine and D-galactose to precursor H antigen,respectively. Group O individuals lack such transferase enzymes and consequently continue to express the basic H structure only [3,4].It is determined that approximate 2million ABH glycan antigen sites are presented on each red blood cell [5].Additionally,the ABH antigens are widely expressed in other human ceils and tissues,including the sensory neurons,epithelium,the vascular endothelium and platelets [6].

关键词： Gut microbiota blood types

Bifurcations of the nonlinear vibro-acoustic coupling of a Duffing Oscillator-plate structure system

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Bifurcations of the nonlinear vibro-acoustic coupling of a D...

A new strategy for high-throughput identification of human gut microbiota containing specific monosaccharide

中国交叉科学学会第15届学术年会

作者： qizheng Zhou Deshi wang Department of Weaponry Engineering Naval University of Engineering

The bifurcations of the nonlinear vibro-acoustic coupling system consisted by a Duffing oscillator and a plate structure are investigated by the incremental harmonic balance（IHB）method and the modal superposition *** Hamilton principle,the nonlinear vibro-acoustic coupling equations of the Duffing oscillator-plate structure system are developed The displacement and the surface pressure of plate are expressed in terms of normal modes based on boundary conditions by the modal superposition *** IHB method and the Floquet theory are employed to derive the solution and the stability of the vibro-acoustic coupling *** on the type of bifurcation,the solution of the coupling equations is constructed,and the IHB method and the Floquet theory are applied to obtain the solution of the coupling equations and the *** repeating the procedure,a series bifurcation points and the solutions are ***,the surface average velocity level and the acoustic radiation power level of the plate are defined based in different period *** results show that there are imaginary parts in the coupling system due to the acoustic pressure,the bifurcations of the Duffing oscillator are delayed,and the stability is *** the first bifurcation,the vibro-acoustic characteristics of the plate are changed.

关键词： vibro-acoustic coupling system plate structure Duffing oscillator bifurcation IHB method

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Science China(Life Sciences) 2019年第7期62卷 985-987页

作者： qizheng Wu Fang Liu Yu Song Qingyun Meng Xunlian Zhang Huizi Li Jingyu Sun Hongqi Gao Peng George wang Yun Kong Min Chen The State Key Laboratory of Microbial Technology and National Glycoengineering Research Center Shandong UniversityQingdao 266237China School of Journalism and Communication Shandong UniversityJinan 250100China Department of Chemistry Georgia State UniversityAtlantaGA 30303USA

Dear Editor,The human gastrointestinal tract is colonized by trillions of microorganisms,the majority of which cannot be cultured (Wu et al.,2018).Numerous glycans are expressed on the surface of gut microbiota that are characteristic of different strains,and the diversity of these glycans is partially attributed to variations in their monosaccharides.

关键词： Editor glycans monosaccharides

退化和恢复过程驱动的荒漠草地生态系统有机碳密度变化

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中国沙漠 2022年第2期42卷 215-222页

作者：于钊李奇铮王培源蒋齐宁夏回族自治区林业和草原局宁夏林业项目管理中心宁夏银川750001 宁夏大学农学院宁夏银川750021 宁夏大学生态环境学院宁夏银川750021 宁夏农林科学院荒漠化治理研究所宁夏银川750002

荒漠草地是陆地生态系统的重要组成部分,研究退化和恢复荒漠草地生态系统碳密度的变化特征,是精确评估荒漠草地在全球气候变化中作用的关键,也能为中国碳达峰和碳中和提供数据支撑和理论依据。通过野外调查取样和室内分析,研究了腾格里... 详细信息

荒漠草地是陆地生态系统的重要组成部分,研究退化和恢复荒漠草地生态系统碳密度的变化特征,是精确评估荒漠草地在全球气候变化中作用的关键,也能为中国碳达峰和碳中和提供数据支撑和理论依据。通过野外调查取样和室内分析,研究了腾格里沙漠南缘天然荒漠草地、重度退化荒漠草地和通过植被建设恢复良好的人工-天然荒漠草地的生态系统碳密度,主要包括植被生物量碳和土壤有机碳。结果表明:天然荒漠草地灌木生物量碳密度(叶、新生枝、老龄枝、枯枝和根系)为213.234 g·m^(-2)(17.688、8.035、59.163、21.732 g·m^(-2)和106.617 g·m^(-2)),草本(地上部和根系)生物量碳密度为84.269 g·m^(-2)(12.192 g·m^(-2)和72.077 g·m^(-2)),0—100 cm土壤剖面土壤有机碳密度为2.517 kg·m^(-2)。退化荒漠草地碳损失较为严重,其灌木、草本生物量碳和土壤有机碳密度仅为天然荒漠生态系统的14.901%、45.549%和26.852%。但是,退化荒漠草地具有较强的固碳潜力,在进行人工植被建设后,恢复荒漠草地灌木、草本生物量碳和0—100 cm土壤有机碳密度显著增加,分别为退化荒漠草地的2.463、5.305倍和2.392倍,总有机碳密度增加了1.152 kg·m^(-2)。恢复草地0—20 cm土层土壤有机碳密度和草本生物量碳密度已经达到天然荒漠草地水平,但生态系统总体上还具有较大的固碳潜力(0.916 kg·m^(-2))。中国荒漠和沙漠化地区具有巨大的固碳潜力,进行合理的人工植被恢复措施是增加荒漠生态系统碳储量、减缓大气中CO_(2)浓度上升、实现中国碳达峰和碳中和以及应对全球气候变化的重要策略。

关键词：荒漠草地生态恢复生物量碳土壤有机碳固碳潜力碳中和