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Seeking Health Information Online:The Moderating Effects of Problematic Situations on User Intention

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Journal of Data and Information Science 2017年第2期2卷 76-95页

作者： Lidan Xia Shengli Deng yirong liu School of Information Management Wuhan UniversityWuhan 430072China

Purpose： This study investigates how online user intention in searching health information is affected by problematic ***/methodology/approach： Based on the Theory of Reasoned Action, the Technology Acceptance Model, and Sense-making theory, we propose two dimensions of problematic situations： urgency and severity of health issues being searched online. Data were collected through a questionnaire survey among 214 Wuhan University students and analyzed using hierarchical regression ***： Perceived usefulness, perceived ease of use, and subjective norm can influence user intention to seek health information online. The urgency of problematic situations has a negative moderating effect on the relationship between perceived ease of use and user intention and the relationship between subjective norm and user intention. The severity of problematic situations has a negative moderating effect on the relationship between subjective norm and user *** limitations： The respondents of the survey are limited to students in one Chinese university, so whether this study＇s results can be applied to another population or not remains to be verified. In addition, only two dimensions of problematic situations are considered in this study. Practical implications： The paper puts forward the moderating effect of problematic situations and verifies it, which is the compensation for online health information-seeking behavior research. Besides, our analyses have implications for professional design of health care systems and related consumer information searches, and improve their performance. Originality/value： Previous work has reported the effects of problematic situation on user intention to seek health information online, ignoring its influence on other factors. This empirical study extends that work to identify the influence of problematic situation when seeking intention-behavior data in two dimensions, urgency and severity.

关键词： Health information seeking Situation Moderating effect Urgency Severity

Contemporary Residence Design in China

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China City Planning Review 1993年第1期10卷 41-45页

作者： liu yirong

The construction of residentialbuildings is a social problem which in-volves various *** this notion and based on the na-tional actual conditions,while design-ing residential buildings,we should doour most to widen our vision to gainmore knowledge relating to it and tohave extensive cooperation with vari-ous sectors in the *** is thenew characteristics of the design of res-idential buildings at present in China,

关键词： Contemporary Residence Design in China Design

The regulatory role of m^(6)A modification in the maintenance and differentiation of embryonic stem cells

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Genes & Diseases 2024年第5期11卷 126-139页

作者： Jin Zhang Lingling Tong Yuchen liu Xiang Li Jiayi Wang Ruoxin Lin Ziyu Zhou Yunbing Chen Yanxi Chen yirong liu Di Chen Center for Reproductive Medicine of the Second Affiliated Hospital Center for Regeneration and Cell Therapy of Zhejiang University-University of Edinburgh Institute(ZJU-UoE Institute)Zhejiang University School of MedicineZhejiang UniversityHangzhouZhejiang 310003China Zhejiang University-University of Edinburgh Institute(ZJU-UoE Institute) Zhejiang University School of MedicineZhejiang UniversityHangzhouZhejiang 310003China College of Materials and Chemical Engineering Minjiang UniversityFuzhouFujian 350108China National Key Laboratory of Biobased Transportation Fuel Technology HainingZhejiang 314400China

As the most prevalent and reversible internal epigenetic modification in eukaryotic mRNAs,N6-methyladenosine(m^(6)A)post-transcriptionally regulates the processing and metabolism of mRNAs involved in diverse biological processes.m^(6)A modification is regulated by m^(6)A writers,erasers,and *** evidence suggests that m^(6)A modification plays essential roles in modulating the cell-fate transition of embryonic stem *** investigation of embryonic stem cell maintenance and differentiation is critical for understanding early embryonic development,which is also the premise for the application of embryonic stem cells in regenerative *** review highlights the current knowledge of m^(6)A modification and its essential regulatory contribution to the cell fate transition of mouse and human embryonic stem cells.

关键词： Cell-fate transition Embryonic stem cell Epigenetic modification m^(6)A modification Post-transcriptional regulation

Research on whole life cycle carbon emission model of typical buildings

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Chinese Journal of Population,Resources and Environment 2015年第4期13卷 320-323页

作者： Xiang Yu Peng Gao yirong liu Meng Lei Peng Zhang School of Economics and Management Southwest Jiao Tong University The Bureau of Economics Science and Technology of Jinniu DistrictChengdu China Architecture Design & Research Group

Based on the theory of life cycle assessment(LCA),this article analyzes the influence factors on carbon emissions from residential *** the article,the life cycle of residential buildings has been divided into five stages:building materials production period,construction period,operation and maintenance period,demolition period,and solid waste recycle and disposal *** on this definition,the authors provide a theoretical model to calculate carbon emissions of residential building life *** particular,the factor of human activities was introduced in the calculation of carbon emissions from the ***,the authors put forward a model for calculation with the unit of carbon emissions for per-capita living space.

关键词： life cycle carbon emissions carbon emissions for per-capita living space calculation model

Engineering of triterpene metabolism and overexpression of the lignin biosynthesis gene PAL promotes ginsenoside Rg3 accumulation in ginseng plant chassis

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Journal of Integrative Plant Biology 2022年第9期64卷 1739-1754页

作者： Lu Yao Huanyu Zhang yirong liu Qiushuang Ji Jing Xie Ru Zhang Luqi Huang Kunrong Mei Juan Wang Wenyuan Gao School of Pharmaceutical Science and Technology Tianjin UniversityTianjin300072 China Wenzhou Safety(Emergency)Institute of Tianjin University Wenzhou325000 China Key Laboratory of Systems Bioengineering Ministry of EducationTianjin UniversityTianjin300072 China National Resource Center for Chinese Meteria Medica China Academy of Chinese Medical SciencesBeijing100700 China

The ginsenoside Rgfound in Panax species has extensive pharmacological properties,in particular anti-cancer ***,its natural yield in Panax plants is ***,we report a multimodular strategy to improve yields of Rgin a Panax ginseng chassis,combining engineering of triterpene metabolism and overexpression of a lignin biosynthesis gene,phenylalanine ammonia lyase(PAL).We first performed semi-rational design and site mutagenesis to improve the enzymatic efficiency of Pq3-O-UGT2,a glycosyltransferase that directly catalyzes the biosynthesis of Rgfrom ***,we used clustered regularly interspaced palindromic repeats(CRISPR)/CRISPR-associated protein 9(Cas9)gene editing to knock down the branch pathway of protopanaxatriol-type ginsenoside biosynthesis to enhance the metabolic flux of the protopanaxadiol-type ginsenoside *** of PAL accelerated the formation of the xylem structure,significantly improving ginsenoside Rgaccumulation(to 6.19-fold higher than in thecontrol).Wecombinedoverexpression of the ginsenoside aglycon synthetic genes squalene epoxidase,Pq3-O-UGT2,and PAL with CRISPR/Cas9-based knockdown of CYP716A53v2 to improve ginsenoside ***,we produced ginsenoside Rgat a yield of 83.6 mg/L in a shake flask(7.0 mg/g dry weight,21.12-fold higher than with wild-type cultures).The highproduction system established in this study could be a potential platform to produce the ginsenoside Rgcommercially for pharmaceutical use.

关键词： catalysis ginsenoside Rg3 metabolism regulation phenylalanine ammonia lyase

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聚乳酸的合成及应用

生物医学工程学杂志 2001年第2期18卷 285-287,295页

作者：刘俊上海第二医科大学附属第九人民医院

聚乳酸及其共聚物是具有优良的生物相容性和可生物降解的高分子材料 ,无毒 ,可吸收。其研制与开发日益受到人们的重视 ,在各个领域尤其是医药领域得到越来越广泛的应用。制备的方法有直接缩聚法、开环聚合法、共聚法。对聚乳酸及其共聚... 详细信息

聚乳酸及其共聚物是具有优良的生物相容性和可生物降解的高分子材料 ,无毒 ,可吸收。其研制与开发日益受到人们的重视 ,在各个领域尤其是医药领域得到越来越广泛的应用。制备的方法有直接缩聚法、开环聚合法、共聚法。对聚乳酸及其共聚物降解性的试验评价已有三十多年 ,但都有缺陷。在有些方面它们的性能和制造工艺还有待改进。作为可生物降解的高分子材料 ,聚乳酸一旦工业化。

关键词：聚乳酸共聚物生物降解生物相容性合成

Number of zero point for a polynomial in real field

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Chinese Science Bulletin 1997年第11期42卷 886-890页

作者： LIN Liang and liu yirong1. Guilin Institute of Technology, Guilin 541004, China 2. Central South University of Technology, Changsha 410083, China Guilin Institute of Technology Guilin 541004 China

IT is well known that for any real coefficient polynomial f(x) of degree n,how to determineits number of real zero points is a very important problem in theory of polynomial,as well as inapplications in mathematics,mechanics,physics and other *** way to solve thisproblem by using Euclidean mutual division as pointed out by Sturm is not simple and conve-nient for us to use the theoretic analyses for the above problem because the relation

关键词： polynomial real zero point coefficients.

Statement on Establishment of Public Health Protection Guideline for Cold Spells—China

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China CDC weekly 2024年第5期6卷 92-94页

作者： Tiantian Li Qinghua Sun Chen Chen Qing Wang Jie Ban Runmei Ma Yi Zhang Lijun Pan Yuanyuan liu Qiutong Li Leyao Chang Hanshuo Zhang yirong liu Miaoyou Niu Xiangxiang Wei Lin Wang China CDC Key Laboratory of Environment and Population Health National Institute of Environmental HealthChinese Center for Disease Control and PreventionBeijingChina

Cold spells are extreme weather events characterized by the invasion of cold air from high latitudes into the middle and low latitudes,resulting in significant *** spells have various adverse health effects,including epidermal damage,respiratory tract spasms,respiratory immune abnormalities,acute cardiopulmonary diseases,and exacerbation of urinary and endocrine *** response to the frequent cold spells in recent years.

关键词： respiratory invasion acute

COMPLEX ISOCHRONICITY OF A SIXTH DEGREE SYSTEM

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Annals of Differential Equations 2007年第3期23卷 352-357页

作者： Wang Qinlong Song Shugang liu yirong Dept. of Information and Math. Yangtze University Jingzhou 434023 Hubei Dept. of Math. Central South University Changsha 410083

In this paper, we discuss the complex isochronicity of a sixth degree polynomial system. We first adopt a new algorithm to find necessary conditions for complex isochronicity, then prove the sufficient conditions usin... 详细信息

关键词： complex isochronicity sixth degree system