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Women health and microbiota:Different aspects of well-being
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作者 Giulia Nannini Amedeo Amedei 《World Journal of Gastroenterology》 SCIE CAS 2024年第10期1287-1290,共4页
In this editorial,we comment on the article by Marano et al recently published in the World Journal of Gastroenterology 2023;29(45):5945-5952.We focus on the role of gut microbiota(GM)in women’s health,highlighting t... In this editorial,we comment on the article by Marano et al recently published in the World Journal of Gastroenterology 2023;29(45):5945-5952.We focus on the role of gut microbiota(GM)in women’s health,highlighting the need to thoroughly comprehend the sex differences in microbiota.Together,the host and GM support the host’s health.The microbiota components consist of viruses,bacteria,fungi,and archaea.This complex is an essential part of the host and is involved in neu-rological development,metabolic control,immune system dynamics,and host dynamic homeostasis.It has been shown that differences in the GM of males and females can contribute to chronic diseases,such as gastrointestinal,metabolic,neurological,cardiovascular,and respiratory illnesses.These differences can also result in some sex-specific changes in immunity.Every day,research on GM reveals new and more expansive frontiers,offering a wealth of innovative oppor-tunities for preventive and precision medicine. 展开更多
关键词 Gut microbiota WOMEN Immune system well-being HORMONES Sexdifferences
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Relationship Between Individuals’Epidemic Risk Perception Within Living Space and Subjective Well-Being:Empirical Evidence from China after the First Wave of COVID-19
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作者 SONG Jiangyu ZHOU Suhong +1 位作者 KWAN Mei-Po ZHENG Zhong 《Chinese Geographical Science》 SCIE CSCD 2024年第2期369-382,共14页
It is common to observe the epidemic risk perception(ERP)and a decline in subjective well-being(SWB)in the context of public health events,such as Corona Virus Disease 2019(COVID-19).However,there have been few studie... It is common to observe the epidemic risk perception(ERP)and a decline in subjective well-being(SWB)in the context of public health events,such as Corona Virus Disease 2019(COVID-19).However,there have been few studies exploring the impact of individuals’ERP within living space on their SWB,especially from a geographical and daily activity perspective after the resumption of work and other activities following a wave of the pandemic.In this paper,we conducted a study with 789 participants in urban China,measuring their ERP within living space and examining its influence on their SWB using path analysis.The results indicated that individuals’ERP within their living space had a significant negative effect on their SWB.The density of certain types of facilities within their living space,such as bus stops,subway stations,restaurants,fast food shops,convenience shops,hospitals,and public toilets,had a significantly negative impact on their SWB,mediated by their ERP within living space.Additionally,participation in out-of-home work and other activities not only increased individuals’ERP within living space,but also strengthened its negative effect on their SWB. 展开更多
关键词 subjective well-being epidemic risk perception living space the density of facilities out-of-home activities
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The Effects of Childhood Trauma on College Students’Depressive Symptoms:The Mediation Role of Subjective Well-Being and the Moderation Role of Resilience
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作者 Fuhua Yang Jiaci Lin +3 位作者 Rong Chen Chunlin Gao Maoying Cui Keli Yin 《International Journal of Mental Health Promotion》 2024年第9期757-766,共10页
Background:The enduring and detrimental impact of childhood trauma on later health and well-being is now well established.However,research on the relationship between childhood trauma and depressive symptoms,along wit... Background:The enduring and detrimental impact of childhood trauma on later health and well-being is now well established.However,research on the relationship between childhood trauma and depressive symptoms,along with the potential risk and protective factors,is insufficient in the context of Chinese college student population.Methods:Data on childhood trauma,depressive symptoms,resilience,and subjective well-being were collected through surveys conducted with 367 Chinese university students.The data collected in this study were analyzed using SPSS 26.0 and PROCESS 3.5.Results:The results revealed that subjective well-being mediated the relationship between childhood trauma and depressive symptoms among college students,with direct and indirect effects accounting for 59.46%and 40.54%of the total effect,respectively.The pathway process between subjective well-being and depressive symptoms was moderated by resilience,whereby an increase in resilience levels corresponded to a gradual escalation in the predictive power of subjective well-being on depressive symptoms.Conclusion:The study indicates that childhood trauma significantly and positively predicts depressive symptoms among college students,and it can also directly predict depressive symptoms through the mediating effect of subjective well-being.Elevating levels of psychological resilience and subjective well-being among college students can mitigate depression and promote psychological well-being.From the perspective of positive psychology,the present study provides a new perspective for the prevention and intervention of depressive symptoms among college students. 展开更多
关键词 Childhood trauma depressive symptoms subjective well-being RESILIENCE
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Self-Compassion Moderates the Effect of Contingent Self-Esteem on Well-Being:Evidence from Cross-Sectional Survey and Experiment
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作者 Ruirui Zhang Xuguang Zhang +1 位作者 Minxin Yang Haoran Zhang 《International Journal of Mental Health Promotion》 2024年第2期117-126,共10页
Contingent self-esteem captures the fragile nature of self-esteem and is often regarded as suboptimal to psychological functioning.Self-compassion is another important self-related concept assumed to promote mental he... Contingent self-esteem captures the fragile nature of self-esteem and is often regarded as suboptimal to psychological functioning.Self-compassion is another important self-related concept assumed to promote mental health and well-being.However,research on the relation of self-compassion to contingent self-esteem is lacking.Two studies were conducted to explore the role of selfcompassion,either as a personal characteristic or an induced mindset,in influencing the effects of contingent self-esteem on well-being.Study 1 recruited 256 Chinese college students(30.4%male,mean age=21.72 years)who filled out measures of contingent self-esteem,self-compassion,and well-being.The results found that self-compassion moderated the effect of contingent self-esteem on well-being.In Study 2,a sample of 90 Chinese college students(34%male,mean age=18.39 years)were randomly assigned to either a control or self-compassion group.They completed baseline trait measures of contingent self-esteem,self-compassion,and self-esteem.Then,they were led to have a 12-min break(control group)or listen to a 12-min self-compassion audio(self-compassion group),followed by a social stress task and outcome measures.The results demonstrated the effectiveness of the brief self-compassion training and its moderating role in influencing the effects of contingent self-esteem on negative affects after the social stress task.This research provides implications that to equip with a self-compassionate mindset could lower the risk of the impairment of well-being associated with elements of contingent selfesteem,which involves a fragile sense of self-worth.It may also provide insights into the development of an“optimal selfesteem”and the improvement of well-being. 展开更多
关键词 SELF-COMPASSION contingent self-esteem well-being social evaluative threat
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Disparities in the impact of economic well-being on self-esteem in adulthood:Race and ethnicity
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作者 Jaewon Lee 《World Journal of Psychiatry》 SCIE 2024年第2期296-307,共12页
BACKGROUND Most studies have defined economic well-being as socioeconomic status,with little attention given to whether other indicators influence self-esteem.Little is known about racial/ethnic disparities in the rel... BACKGROUND Most studies have defined economic well-being as socioeconomic status,with little attention given to whether other indicators influence self-esteem.Little is known about racial/ethnic disparities in the relationship between economic wellbeing and self-esteem during adulthood.AIM To explore the impact of economic well-being on self-esteem in adulthood and differences in the association across race/ethnicity.METHODS The current study used data from the National Longitudinal Survey of Youth 1979.The final sample consisted of 2267 African Americans,1425 Hispanics,and 3678 non-Hispanic Whites.Ordinary linear regression analyses and logistic regression analyses were conducted.RESULTS African Americans and Hispanics were more likely to be in poverty in comparison with non-Hispanic Whites.More African Americans were unemployed than Whites.Those who received fringe benefits,were more satisfied with jobs,and were employed were more likely to have higher levels of self-esteem.Poverty was negatively associated with self-esteem.Interaction effects were found between African Americans and job satisfaction predicting self-esteem.CONCLUSION The role of employers is important in cultivating employees’self-esteem.Satisfactory outcomes or feelings of happiness from the workplace may be more important to non-Hispanic Whites compared to African Americans and Hispanics. 展开更多
关键词 Economic well-being SELF-ESTEEM Racial/Ethnic disparities ADULTHOOD
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Exploring well-being disparities between urban and rural areas:A case study in the Stavropol Territory,Russia
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作者 Anastasia CHAPLITSKAYA Wim HEIJMAN Johan van OPHEM 《Regional Sustainability》 2024年第1期80-92,共13页
Rural areas are crucial for a country’s sustainable economy.New strategies are needed to develop rural areas to improve the well-being of rural population and generate new job opportunities.This is especially importa... Rural areas are crucial for a country’s sustainable economy.New strategies are needed to develop rural areas to improve the well-being of rural population and generate new job opportunities.This is especially important in countries where agricultural production accounts for a significant share of the gross product,such as Russia.In this study,we identified the key indicators of satisfaction and differences between rural and urban citizens based on their social,economic,and environmental backgrounds,and determined whether there are well-being disparities between rural and urban areas in the Stavropol Territory,Russia.We collected primary data through a survey based on the European Social Survey framework to investigate the potential differences between rural and urban areas.By computing the regional well-being index using principal component analysis,we found that there was no statistically significant difference in well-being between rural and urban areas.Results of key indicators showed that rural residents felt psychologically more comfortable and safer,assessed their family relationships better,and adhered more to traditions and customs.However,urban residents showed better economic and social conditions(e.g.,infrastructures,medical care,education,and Internet access).The results of this study imply that we can better understand the local needs,advantages,and unique qualities,thereby gaining insight into the effectiveness of government programs.Policy-makers and local authorities can consider targeted interventions based on the findings of this study and strive to enhance the well-being of both urban and rural residents. 展开更多
关键词 well-being Sustainable development Rural areas Urban areas Principal component analysis(PCA) RUSSIA
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Researching the Impact of the Quality of Village Governance on Farmers’Well-Being:From the Perspectives of Income and Occupational Differentiation
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作者 Chen Qiulin Peng Ziwei Fu Gang 《Contemporary Social Sciences》 2024年第4期17-40,共24页
The goal of village governance is to improve the well-being of farmers,so this study aims to measure the impact the quality of village governance on the well-being of farmers.It also examines the heterogeneity of this... The goal of village governance is to improve the well-being of farmers,so this study aims to measure the impact the quality of village governance on the well-being of farmers.It also examines the heterogeneity of this impact across different farmer groups from the perspectives of income levels and occupational differentiation.To this end,this study developed an indicator system based on survey data collected from 1,442 farmers in the Sichuan,Shaanxi,and Gansu provinces,as well as the Ningxia Hui autonomous region.Multiple linear regression models were then used to analyze this data,and the findings revealed that improvements in the quality of village governance significantly increased the well-being of farmers.Specifically,primary-level empowerment and capacity building were shown to contribute the most to the enhancement of the farmers’well-being,followed by social inclusion,and social cohesion was found to have only a minimal effect.In terms of income levels,improving the quality of village governance benefited middle-income farmers the most,followed by low-income farmers,and it had the least effect on high-income farmers.In terms of occupations,full-time farmers gained the most from improvements in the quality of village governance,followed by off-farm farmers,with part-time farmers benefiting the least.Based on these findings,this study suggests that policymakers should improve the quality of village governance to enhance the well-being of farmers,focusing on the impact that level of income and occupational differentiation have on village governance. 展开更多
关键词 quality of village governance farmers’well-being DIFFERENTIATION
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Association between Mental Health Literacy and Workplace Well-Being of Chinese Grassroots Civil Servants:The Chain Mediating Effects of Regulatory Emotional Self-Efficacy and Resilience
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作者 Yi Tang Yajun Zhao +4 位作者 Zihan Jin Shengnan Wu Zhijun Zhang Ju Zhou Ling Zhou 《International Journal of Mental Health Promotion》 2024年第7期559-568,共10页
This study aimed to investigate the relationship between mental health literacy(MHL)and workplace well-being(WWB)of Chinese grassroots civil servants,with regulatory emotional self-efficacy(RESE)and resilience as media... This study aimed to investigate the relationship between mental health literacy(MHL)and workplace well-being(WWB)of Chinese grassroots civil servants,with regulatory emotional self-efficacy(RESE)and resilience as mediating variables.A questionnaire survey was conducted among Chinese grassroots civil servants,with a valid sample size of 2673 after excluding missing values and conducting relevant data processing.The PROCESS was used to examine the relationship between MHL,RESE,resilience,and WWB.The study found that MHL among grassroots civil servants was positively and significantly correlated with WWB(r=0.73,p<0.01).RESE partially mediated the relationship between MHL and WWB(β=0.25,95%CI[0.22,0.28]).Resilience partially mediated the relationship between MHL and WWB(β=0.22,95%CI[0.19,0.26]).MHL had a positive effect on WWB through the chain mediating effect of RESE and resilience(β=0.05,95%CI[0.03,0.07]).There is a close relationship between MHL and WWB,where Chinese grassroots civil servants with higher levels of MHL can develop stronger RESE and resilience,leading to higher WWB.The results of this study remind organizational institutions of Chinese grassroots civil servants that enhancing MHL,RESE,and resilience is an important pathway to promoting their WWB. 展开更多
关键词 Mental health literacy workplace well-being regulatory emotional self-efficacy RESILIENCE Chinese grassroots civil servants
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A Review of Western and Eastern Traditional Views of Well-Being
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作者 HAN Feng CHEN Xuanyu 《Sociology Study》 2024年第1期27-38,共12页
This paper reviews traditional understanding of well-being from both Western and Eastern cultural perspectives. First, two distinct Western traditions in defining well-being are compared, namely hedonic and eudaemonic... This paper reviews traditional understanding of well-being from both Western and Eastern cultural perspectives. First, two distinct Western traditions in defining well-being are compared, namely hedonic and eudaemonic approaches. The hedonic approach defines happiness as the maximization of pleasure, while the eudaemonic approach regards happiness as the fulfillment of a person’s natural needs and overall flourishing. Second, the views of well-being in lens of Confucianism, Buddhism, and Taoism in the East are reviewed. The common and different understandings of well-being between Western and Eastern traditions are discussed as followed. Finally, two well-known operationalized definitions of well-being, that is subjective well-being and psychological well-being, proposed in the roots of Western traditions are elucidated. 展开更多
关键词 well-being HEDONISM eudaemonism subjective well-being psychological well-being
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Analysis of the Current Situation and Influencing Factors of Psychological Well-Being of Elderly People in the Community
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作者 Ying Wang Zhijuan Hua +4 位作者 Xiaopan Shi Yang Wang Jiaqi Fu Yanling Li Weihua Liu 《Journal of Clinical and Nursing Research》 2024年第9期174-182,共9页
Objective:To investigate the current psychological well-being of older people in the community and analyze its influencing factors.Methods:A total of 265 community-dwelling older adults aged 60 and above in Baoding Ci... Objective:To investigate the current psychological well-being of older people in the community and analyze its influencing factors.Methods:A total of 265 community-dwelling older adults aged 60 and above in Baoding City,Hebei Province,were selected through convenience sampling from November 2023 to March 2024.They were surveyed using a general information questionnaire and a comprehensive well-being questionnaire,with results analyzed statistically using SPSS 27.0.Results:Six dimensions of the psychological well-being scale for community older adults were identified:life vitality(P50=4.83),health concern(P50=4.6),self-worth(P50=5.6),friendly relationships(P50=5.33),altruistic behavior(P50=5.2),personality growth(P50=4.67),and comprehensive well-being(P50=161).Multivariate regression analysis showed that social isolation(β=-0.021,P<0.001),type of work(β=-0.142,P<0.001),chronic disease history(β=0.004,P<0.001),need for mobility aid(β=0.192,P<0.001),and monthly income(β=0.381,P<0.001)were factors influencing psychological well-being.Conclusion:The psychological well-being of the elderly is slightly above moderate and requires improvement.Enhancing factors such as reducing social isolation,addressing chronic disease history,and improving financial support could improve psychological well-being in older adults. 展开更多
关键词 Community-dwelling older adults Psychological well-being Influencing factors
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The Relationship Between Social Isolation and Psychological Well-Being Among Older Adults in the Community
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作者 Weihua Liu Yanling Li +3 位作者 Xiaoxing Wang Lijing Yan Fengwan Wang Ying Wang 《Journal of Clinical and Nursing Research》 2024年第9期183-190,共8页
Objective:To investigate the psychological well-being of the elderly in Baoding City,Hebei Province,and analyze its influencing factors,with a focus on exploring the relationship between social isolation and psycholog... Objective:To investigate the psychological well-being of the elderly in Baoding City,Hebei Province,and analyze its influencing factors,with a focus on exploring the relationship between social isolation and psychological well-being.This study aims to provide a reference for effective interventions that promote the physical and mental health of elderly individuals in the community.Methods:A total of 265 elderly individuals from six communities in Baoding City,Hebei Province were surveyed between November 2023 and March 2024 using the general information questionnaire,the Social Isolation Scale for the Elderly,and the Comprehensive Happiness Questionnaire.Results:The total score of the Social Isolation Scale for the elderly in the community was(14.15±3.73)points,indicating a moderate level of social isolation.The average score of P50 on the Psychological Well-being Scale was 4.88,suggesting that the psychological well-being of the elderly in the community was moderate to high.Multivariate regression analysis showed that the level of social isolation significantly influenced the psychological well-being of the elderly(P<0.05),with social isolation negatively correlated with psychological well-being.Conclusion:Healthcare professionals should pay attention to the social isolation of elderly individuals in the community and develop targeted interventions to improve their psychological well-being and quality of life. 展开更多
关键词 Elderly in the community Social isolation Psychological well-being
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氢氟酸处理InP/GaP/ZnS量子点的光学性能及其发光二极管应用
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作者 陈晓丽 陈佩丽 +3 位作者 卢思 朱艳青 徐雪青 苏秋成 《发光学报》 EI CAS CSCD 北大核心 2024年第1期69-77,共9页
采用氢氟酸(HF)原位注入法制备了InP/GaP/ZnS量子点。通过紫外/可见/近红外光谱、光致发光光谱、透射电镜、球差校正透射电镜、X射线衍射、X射线光电子能谱等测试手段分析了HF对InP量子点的发光性能影响。实验结果表明,HF刻蚀减少了量... 采用氢氟酸(HF)原位注入法制备了InP/GaP/ZnS量子点。通过紫外/可见/近红外光谱、光致发光光谱、透射电镜、球差校正透射电镜、X射线衍射、X射线光电子能谱等测试手段分析了HF对InP量子点的发光性能影响。实验结果表明,HF刻蚀减少了量子点表面氧化缺陷状态,有效控制了InP核表面的氧化,并且原子配体形式的F-钝化了量子点表面的悬挂键,显著提升了量子点的光学性能。HF处理的InP/GaP/ZnS量子点具有最佳的发光性能,PLQY高达96%。此外,用HF处理InP/GaP/ZnS量子点制备的发光二极管,其发光的电流效率为6.63 cd/A,最佳外量子效率(EQE)为3.83%。 展开更多
关键词 HF InP/gap/ZnS量子点 光学性能 发光二极管
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道地药材云木香GAP研究与规范化种植基地建设实践与展望
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作者 杨丽云 陈翠 +4 位作者 康平德 戚淑威 程远辉 徐天才 杨少华 《安徽农业科学》 CAS 2024年第19期11-15,共5页
云木香原产印度,20世纪30年代初在云南丽江引进种植,并逐渐推广扩展至全省多地,1959年首次出口,誉为“云木香”,为云南省重要道地药材之一,药用历史悠久。为规范云南道地药材云木香的栽培措施,以保证其产品质量,参照国家药品监督管理局... 云木香原产印度,20世纪30年代初在云南丽江引进种植,并逐渐推广扩展至全省多地,1959年首次出口,誉为“云木香”,为云南省重要道地药材之一,药用历史悠久。为规范云南道地药材云木香的栽培措施,以保证其产品质量,参照国家药品监督管理局颁布实施的《中药材生产质量管理规范》相关要求,综述云木香的道地沿革与种植历史、规范化种植技术研究、传统初加工方法的继承与创新、标准化生产质量管理体系的建立以及规范化种植试验示范基地建设5个方面的研究,以期为云南西北高寒山区该道地药材品种产业化生产提供科学依据。 展开更多
关键词 云木香 道地药材 gap研究 质量 可追溯
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基于5GAP模型的高校食堂服务质量差距分析与对策探讨 被引量:1
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作者 陈森 《中国食品工业》 2024年第8期62-64,58,共4页
食堂服务是高校后勤服务体系中最重要的环节之一,高校食堂管理必须要有的放矢地改进工作。5GAP模型是一种直接有效的服务环节分析工具,更注重找出内部的服务缺陷。在以往的高校食堂研究中,多以顾客满意度的外部视角分析服务质量问题,本... 食堂服务是高校后勤服务体系中最重要的环节之一,高校食堂管理必须要有的放矢地改进工作。5GAP模型是一种直接有效的服务环节分析工具,更注重找出内部的服务缺陷。在以往的高校食堂研究中,多以顾客满意度的外部视角分析服务质量问题,本文通过5GAP模型以内部视角分析发现引发高校食堂服务质量问题的根源,以期能对高校食堂服务质量的改进和提升起到一定作用。 展开更多
关键词 服务质量 5gap模型 高校食堂
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青年职场“Gap day”现象探究
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作者 张良驯 付成梅 《中国青年社会科学》 北大核心 2024年第4期11-22,共12页
青年职场“Gap day”现象引起了社会的广泛关注和热烈讨论。青年职场“Gap day”现象的典型特征是:通过语言上的拼贴与再造,表达部分职业青年的困顿疲倦情绪;通过行为上的放空与逃离,排解青年在工作中积攒的情绪和压力;通过价值上的戏... 青年职场“Gap day”现象引起了社会的广泛关注和热烈讨论。青年职场“Gap day”现象的典型特征是:通过语言上的拼贴与再造,表达部分职业青年的困顿疲倦情绪;通过行为上的放空与逃离,排解青年在工作中积攒的情绪和压力;通过价值上的戏谑与自嘲,赋予青年的短暂休息以正向意义。青年职场“Gap day”现象的深层原因是:青年在高压生存环境中的“弹性姿态”、在加速社会运行中的“精神逃离”和在社会时钟齿轮下的“自我审视”。对青年职场“Gap day”现象的有效治理,既要着眼于青年发展,运用公共政策实现青年发展的普遍性诉求,又要立足于青年就业,采取切实措施促进青年实现高质量充分就业。 展开更多
关键词 gap day 青年现象 青年就业 青年职业发展
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The Relationship between Mental Health Literacy and Subjective Well-Being of Young and Middle-Aged Residents: Perceived the Mediating Role of Social Support and Its Urban-Rural Differences 被引量:1
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作者 Zhen Zhang Suyan Chen +4 位作者 Xiaoxuan Wang Jun Liu Yilin Zhang Yongxia Mei Zhenxiang Zhang 《International Journal of Mental Health Promotion》 2023年第4期471-483,共13页
This study investigates mental health literacy among young and middle-aged urban and rural residents and the differences in mental health literacy,perceived social support and subjective well-being.From January to Feb... This study investigates mental health literacy among young and middle-aged urban and rural residents and the differences in mental health literacy,perceived social support and subjective well-being.From January to February 2022,620 participants(320 rural and 300 urban residents)from three provinces of China were selected by con-venience sampling.A general data questionnaire,mental health literacy scale,perceived social support scale and subjective well-being scale were administered.The mental health literacy scores of urban residents were 3.34±0.57 and those of rural residents were 2.73±0.79.The results of multiple regression analysis showed that the mental health literacy scores of rural residents were more significant than those of urban residents in terms of sex and age,while urban residents’mental health literacy scores were more significant than those of rural resi-dents in terms of monthly income.Mental health literacy,perceived social support and subjective well-being of young and middle-aged urban and rural residents were all positively correlated(P<0.01).While the level of mental health literacy is better among urban residents than rural residents,perceived social support plays a partial mediating role between mental health literacy and subjective well-being of both urban and rural residents,and should be the focus of researchers seeking to improve the level of well-being of residents. 展开更多
关键词 Young and middle-aged people mental health literacy perceived social support subjective well-being mediating role
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共混GAP基含能热塑性弹性体的氢键行为与力学性能
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作者 郑梦泽 张宁 +4 位作者 刘双 靳鹏 张锡铭 刘文皓 罗运军 《火炸药学报》 EI CAS CSCD 北大核心 2024年第4期365-371,共7页
为了改善GAP热塑性弹性体的力学性能,采用了DSC、低场核磁测试、静态力学测试和动态力学测试的方法对两种异氰酸酯固化的弹性体共混体系的氢键行为和力学性能进行分析,建立微观结构与宏观性能的关系。结果表明,由于分子结构原因,HMDI固... 为了改善GAP热塑性弹性体的力学性能,采用了DSC、低场核磁测试、静态力学测试和动态力学测试的方法对两种异氰酸酯固化的弹性体共混体系的氢键行为和力学性能进行分析,建立微观结构与宏观性能的关系。结果表明,由于分子结构原因,HMDI固化的GAP热塑性弹性体和IPDI固化的弹性体显示出不同的氢键行为和力学性能,通过物理共混得到了兼具抗拉强度及断裂延伸率的弹性体,50℃下抗拉强度高于1.5MPa,-40℃下延伸率不低于300%,相较于纯HMDI固化的弹性体,低温延伸率提升了约150%,IPDI固化的弹性体高温抗拉强度提升了约1.4MPa,说明通过共混可得到性能更为均衡的含能热塑性弹性体。 展开更多
关键词 材料力学 聚叠氮缩水甘油醚 gap 热塑性弹性体 氢键行为 高分子物理共混 高低温力学性能
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基于Roussouly分型的脊柱形态和GAP评分对成人脊柱畸形术后临床疗效的影响
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作者 李嘉鑫 陈振 +3 位作者 杨万忠 范嘉旺 郑任春 戈朝晖 《宁夏医科大学学报》 2024年第5期507-514,共8页
目的评估成人脊柱畸形(ASD)手术前后的Roussouly矢状面脊柱形态及全脊柱序列比例(GAP)评分对术后临床疗效的影响。方法回顾性分析2016年1月至2021年12月在宁夏医科大学总医院行手术治疗的72例ASD患者临床资料,其中男性20例,女性52例,年... 目的评估成人脊柱畸形(ASD)手术前后的Roussouly矢状面脊柱形态及全脊柱序列比例(GAP)评分对术后临床疗效的影响。方法回顾性分析2016年1月至2021年12月在宁夏医科大学总医院行手术治疗的72例ASD患者临床资料,其中男性20例,女性52例,年龄(46.9±19.0)岁。将纳入患者按照“当前”[依据骶骨倾斜角(SS)]和“理论”[依据骨盆入射角(PI)]Roussouly分型脊柱形态进行划分。根据一个恒定参数(PI)判断出患者“理论”形态,然后将此种类型的理想形态参数与实际参数作对比,若术后3个月患者的“当前”Roussouly脊柱形态与其“理论”Roussouly脊柱形态各项参数均符合则归入匹配组,否则归入非匹配组。根据相关参数计算两组患者手术前后GAP评分,并收集术前、术后3个月和末次随访时的疼痛视觉模拟评分(VAS)、Oswestry功能障碍指数(ODI)及术前和末次随访时SRS-22评分(包括总分、疼痛、功能、自我形象、心理健康和治疗满意度),同时记录患者随访时机械并发症发生情况。比较两组患者的影像学参数、GAP评分、临床疗效评分及机械并发症中的差异。结果72例ASD患者术前以RoussoulyⅠ型和Ⅱ型脊柱形态为主,术后以RoussoulyⅡ型和Ⅲ型为主。所有患者术后影像学参数和临床疗效评分较术前均得到改善(P均<0.05)。组间比较,非匹配组末次随访骨盆倾斜角和躯干整体倾斜角大于匹配组(P均<0.05),术后3个月及末次随访,匹配组GAP评分均低于非匹配组(P均<0.05),匹配组较非匹配组在术后3个月和末次随访有更好的VAS评分、ODI评分及SRS-22评分(包括总分、疼痛、功能和治疗满意度)(P均<0.05)。匹配组术后机械并发症发生率更低(P<0.05),腰椎前凸顶点位于理想位置可降低机械并发症发生率。结论ASD术后脊柱矢状面匹配理想Roussouly分型的患者临床疗效和GAP评分更好、机械并发症发生率更低,PI术中应尽可能矫正至理想Roussouly分型脊柱形态。 展开更多
关键词 成人脊柱畸形 Roussouly分型 gap评分 临床疗效 机械并发症
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基于GIS的漳州市松岭村乡村旅游适宜性评价及GAP分析
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作者 康丽婷 罗紫薇 +2 位作者 胡希军 韦宝婧 周冬梅 《生态科学》 CSCD 北大核心 2024年第2期123-131,共9页
以“全国乡村旅游扶贫重点村”漳州市松岭村为研究对象,借助地理信息系统(GIS),从资源禀赋潜力出发,构建乡村旅游适宜性评价体系,利用地理探测器计算各旅游适宜性影响因子的权重,基于乡村旅游适宜性评价结果对旅游空间进行开发空缺(GAP... 以“全国乡村旅游扶贫重点村”漳州市松岭村为研究对象,借助地理信息系统(GIS),从资源禀赋潜力出发,构建乡村旅游适宜性评价体系,利用地理探测器计算各旅游适宜性影响因子的权重,基于乡村旅游适宜性评价结果对旅游空间进行开发空缺(GAP)分析,并提出旅游规划优化策略。旨在优化景观资源在空间整体布局中的合理利用,为乡村旅游规划提供新思路。研究结果表明:(1)松岭村旅游适宜性受基础设施因子影响最大,受坡向因子影响最小;(2)松岭村旅游适宜等级可分为高适宜、较高适宜、中适宜、较低适宜、低适宜区5类,其中高适宜区面积最小,仅占松岭村总面积的4.64%,低适宜区面积最大,占总面积的58.00%;(3)借鉴GAP分析思路,识别松岭村景观资源点开发潜力分级区块,各适宜等级区均存在较多景观资源点未开发。建议结合现有特色景观资源点,优先开发较高及高潜力区块、积极开发中潜力区、适度开发较低及低潜力区,以期在保留旅游资源特色的同时最大化利用其景观资源。 展开更多
关键词 旅游适宜性评价 地理探测器 gap分析 乡村旅游 松岭村
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LiF/GAP协同作用改善硼粉的燃烧性能
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作者 伍双艳 王吉权 +4 位作者 邵建 刘俊 陈九玉 朱宝忠 孙运兰 《火炸药学报》 EI CAS CSCD 北大核心 2024年第3期279-286,I0006,共9页
以氟化锂/缩水甘油叠氮化物聚合物(LiF/GAP)为界面层对微米硼进行改性,研究LiF/GAP协同作用对硼粉热行为、燃烧性能和凝聚相燃烧产物的影响。结果表明,通过硅烷偶联剂处理后,硼粉表面黏结性得以提高,LiF能够较好地包覆在硼粉表面;GAP在... 以氟化锂/缩水甘油叠氮化物聚合物(LiF/GAP)为界面层对微米硼进行改性,研究LiF/GAP协同作用对硼粉热行为、燃烧性能和凝聚相燃烧产物的影响。结果表明,通过硅烷偶联剂处理后,硼粉表面黏结性得以提高,LiF能够较好地包覆在硼粉表面;GAP在400℃之前抑制了LiF与硼表面氧化膜的反应,使LiF的除膜效应延后至硼粉氧化增重阶段,从而将更多的活性硼暴露在空气中发生氧化,促进了硼粉的燃烧;LiF和GAP协同作用显著改善了硼粉的燃烧性能,尤其当LiF和GAP质量分数均为10%时,作用效果最为明显。此外,LiF和GAP协同作用有效抑制了燃烧过程中硼粉团聚,使其凝聚相燃烧产物粒径降低。 展开更多
关键词 物理化学 硼颗粒 LiF/gap协同作用 燃烧特性 团聚抑制 燃烧机理
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