A method for the analysis of the relationship between the helical structure and optical activity was proposed by the study of the conformations and X-ray diffraction structures of some cyclic esters prepared by esteri...A method for the analysis of the relationship between the helical structure and optical activity was proposed by the study of the conformations and X-ray diffraction structures of some cyclic esters prepared by esterification of L-(-)-2.3-O-methylidene threitol and L-(+)-2,3-O-isopropplidene threitol with alkanedioyl dichlorides and o-,m-,and p-phthaloyl dichlorides.展开更多
Objective:The study is to analyze the influence of parent-child relationship on pupils’learning motivation,and to explore the mediating mechanism of teacher-student relationship in parent-child relationship and learn...Objective:The study is to analyze the influence of parent-child relationship on pupils’learning motivation,and to explore the mediating mechanism of teacher-student relationship in parent-child relationship and learning motivation.Method:This study conducted a questionnaire survey on 213 pupils in Grades 5 and 6 in two schools in Beijing using Pianta’s teacher-student relationship scale revised by Qu,Dornbush’s parent-child intimacy scale revised by Zhang and the learning motivation scale adapted by Hu.Results:Gender,grade,whether they are the only child and to be a class cadre or not show significant differences in some dimensions of parent-child relationship,teacher-student relationship and learning motivation.The total scores of parent-child relationship,teacher-student relationship and learning motivation are positively correlated,and some sub dimensions are also significantly correlated.Parent-child relationship and teacher-student relationship have a significant positive predictive effect on learning motivation,and parent-child relationship has a significant positive predictive effect on teacher-student relationship.Teacher-student relationship plays a mediating role in the influence of parent-child relationship on learning motivation.Conclusions:Parent-child relationship can promote the relationship between teachers and students,and then enhance pupils’learning motivation.展开更多
BACKGROUND Stroke patients often experience psychological distress,which can impact their intimate relationships with spouses,subsequently influencing their treatment and recovery.Physical activity is considered a key...BACKGROUND Stroke patients often experience psychological distress,which can impact their intimate relationships with spouses,subsequently influencing their treatment and recovery.Physical activity is considered a key rehabilitation method for stroke patients.This paper aims to analyze whether psychological distress affects intimate relationship between spouses through physical activity.AIM To explore the mediating effect of physical activity between psychological distress and intimate relationship in stroke patients.METHODS A total of 256 stroke patients who underwent treatment at the First People’s Hospital of Shangqiu between July 2021 and July 2022 were enrolled in this study.The participants completed questionnaires,including the Kessler Psychological Distress Scale(K10),the Quality of Relationship Index(QRI),International Physical Activity Questionnaire,and a general information questionnaire.Data analysis were performed using SPSS 23.0.The Harman test was employed to detect common method deviations,and Spearman correlation was used for correlation analysis.The mediating effect was assessed using Process 3.4.1,with significance testing of the regression coefficients conducted using the bias-corrected percentile Bootstrap method(5000 iterations,95%confidence interval).Statistical significance was set at P<0.05.RESULTS The results showed that patients scored an average of 21.61±6.44 points on the K10,32.40±6.19 points on the QRI;the median physical activity level according to the International Physical Activity Questionnaire was 1861(566,2846)MET·min/w.The level of physical activity(the physical activity intensity of the patients reflected by the Interna-tional Physical Activity Questionnaire-Long Form scale)negatively correlated with psychological distress and intimacy(P<0.05),and positively correlated with each other(P<0.05),with the correlation stronger at lower physical activity levels compared to higher ones.The mediating effect of physical activity between psychological distress and intimate relationship was calculated to be 40.23%.Bootstrap analysis further validated the results.The mediating effect of psychological distress on intimate relationships through physical activity level was-0.284,with a confidence interval of-0.409 to-0.163,excluding 0,confirming a significant mediating effect of psychological distress on intimate relationships.CONCLUSION Physical activity significantly affects relationship between psychological distress and intimate relationships among stroke patients.Addressing the role of physical activity may have implications for improving patient outcomes and rehabilitation strategies.展开更多
This article examines the application of Teacher-student Collaborative Assessment in college students’oral English.Qualitative Study data were collected during 16 weeks teaching practice and included the students’an...This article examines the application of Teacher-student Collaborative Assessment in college students’oral English.Qualitative Study data were collected during 16 weeks teaching practice and included the students’and the examiner’s interviews.The result indicates that most students’oral English has been improved.They prefer this assessment model,and their English learning interest and proficiency has been enhanced as well.展开更多
背景:观察性研究表明他汀类药物可能对骨密度具有保护作用,这使其成为潜在的骨质疏松症治疗药物之一。目的:通过孟德尔随机化方法来评估药物靶点介导的脂质表型与骨密度之间的因果关系。方法:从IEU Open GWAS数据库获取了与他汀类药物...背景:观察性研究表明他汀类药物可能对骨密度具有保护作用,这使其成为潜在的骨质疏松症治疗药物之一。目的:通过孟德尔随机化方法来评估药物靶点介导的脂质表型与骨密度之间的因果关系。方法:从IEU Open GWAS数据库获取了与他汀类药物相关的单核苷酸多态性以及骨密度相关数据。主要分析方法是逆方差加权法,同时也使用了加权中位数法、简单中位数法、加权中值方法和MR-Egger回归法。使用β值和95%CI来评估他汀类药物与骨密度之间的因果关系;另外,进行敏感性分析以验证结果的可靠性,使用Cochran’s Q检验来评估异质性,使用MR-Egger截距检验是否存在水平多效性。使用留一法分析确定是否有单个或多个单核苷酸多态性影响了结果。结果与结论:他汀类药物作用靶点——3-羟基-3-甲基戊二酰辅酶A还原酶介导的低密度脂蛋白胆固醇与足跟定量超声骨密度(β=-0.086,95%CI:-0.117至-0.055,P=5.42×10^(-8))和全身骨密度(β=-0.193,95%CI:-0.288至-0.098,P=7.35×10^(-5))呈显著相关。该研究结果支持了他汀类药物对骨密度的保护作用。这些发现不仅加深了对胆固醇相关基因和骨骼健康关系的理解,还揭示了改善骨密度的潜在治疗靶点。展开更多
背景:观察性研究表明,他汀类药物可能对骨关节炎(包括膝骨关节炎和髋骨关节炎)具有保护作用,然而他汀类药物与骨关节炎风险之间的关联尚未完全明确。目的:利用大规模人群全基因组关联研究(GWAS)的汇总数据,通过孟德尔随机化分析探究他...背景:观察性研究表明,他汀类药物可能对骨关节炎(包括膝骨关节炎和髋骨关节炎)具有保护作用,然而他汀类药物与骨关节炎风险之间的关联尚未完全明确。目的:利用大规模人群全基因组关联研究(GWAS)的汇总数据,通过孟德尔随机化分析探究他汀类药物与骨关节炎风险之间的关联。方法:他汀类药物相关的单核苷酸多态性数据来自FinnGen最新第9版数据库,骨关节炎、膝骨关节炎和髋骨关节炎数据来自IEU Open GWAS、英国生物库和关节炎研究英国骨性关节炎遗传学(ArcOGEN)数据库。逆方差加权法为评估因果效应的主要分析方法。加权中位数法、简单中位数法、加权中值方法和MR-Egger回归用于补充说明。以比值比和95%CI评价他汀类药物与骨关节炎、膝骨关节炎和髋骨关节炎风险之间的因果关系。其次进行敏感性分析来验证结果的可靠性,使用Cochran’s Q检验异质性,MR-Egger-intercept检验是否存在水平多效性,留一法分析确定是否具有潜在影响的单核苷酸多态性等。结果与结论:①逆方差加权法结果表明,遗传预测的他汀类药物与骨关节炎(OR=0.998,95%CI:0.996-0.999,P=0.01)、膝骨关节炎(OR=0.964,95%CI:0.940-0.989,P=0.005)和髋骨关节炎(OR=0.928,95%CI:0.901-0.955,P=4.28×10^(-7))风险之间存在负向因果关系;②MR-Egger-intercept分析未检测到潜在的水平多效性(骨关节炎:P=0.658;膝骨关节炎:P=0.600;髋骨关节炎:P=0.141);③研究结果为观察性研究所述的他汀类药物降低骨关节炎、膝骨关节炎和髋骨关节炎风险提供了证据,他汀类药物治疗骨关节炎的具体机制需要进一步研究。展开更多
Background: The Air Force Health Study collected reproductive outcomes for live-born children of male Air Force veterans of the Vietnam War. Methods: Dioxin values for participants were obtained from blood samples. An...Background: The Air Force Health Study collected reproductive outcomes for live-born children of male Air Force veterans of the Vietnam War. Methods: Dioxin values for participants were obtained from blood samples. Analyses were conducted of occurrence of 16 specific categories of birth defects and developmental disabilities. Children were categorized as conceived before and after the start of participants’ Vietnam War service. Children conceived before the start of Vietnam War service were treated as being conceived when their fathers had unquantifiable dioxin values. Children conceived after the start of Vietnam War service for participants with missing dioxin values were excluded from primary analyses, but were used to assess the impact of their exclusion on conclusions. Correlation between values for specific categories for multiple children fathered by the same participant was accounted for. The dose-response relationship was treated as a step function increasing for dioxin values larger than adaptively identified individual thresholds changing with the specific category. Results: For 15 of 16 specific categories, the probability of occurrence increased substantially for a sufficiently high dioxin level above identified thresholds. Exclusion of children due to missing dioxin likely did not affect these results. Conclusions: Results supported the conclusion of substantial adverse effects on a wide variety of specific categories of birth defects and developmental disabilities due to sufficiently high exposures to dioxin, a toxic contaminant of Agent Orange used for herbicide spraying in the Vietnam War. Results may hold more generally, but might also have been affected by a variety of limitations.展开更多
A nationally representative sample of 1640 Chinese urban adolescents (mean age=14.5 years) and their parents and teachers were surveyed to examine the associations between relationships with teachers and parents and a...A nationally representative sample of 1640 Chinese urban adolescents (mean age=14.5 years) and their parents and teachers were surveyed to examine the associations between relationships with teachers and parents and adolescents' developmental outcomes such as academic performance, psychological well-being, altruistic behaviors, and misconduct. Results showed that the quality of adolescents' relationships with teachers was highly correlated with adolescent outcomes, in most cases more so than for relationships with parents. Furthermore, such associations were the same across both genders and three grade levels. These findings suggest that teachers may play an especially significant role in Chinese adolescent development. This study adds to the small but growing literature on the importance of teachers as well as other non-parental adults in adolescent psychosocial development.展开更多
文摘A method for the analysis of the relationship between the helical structure and optical activity was proposed by the study of the conformations and X-ray diffraction structures of some cyclic esters prepared by esterification of L-(-)-2.3-O-methylidene threitol and L-(+)-2,3-O-isopropplidene threitol with alkanedioyl dichlorides and o-,m-,and p-phthaloyl dichlorides.
基金Collaborative education project of industry university cooperation of the Ministry of Education of China:Research on practice teaching of the competency of future mental health teachers based on virtual reality(No.202102080005).
文摘Objective:The study is to analyze the influence of parent-child relationship on pupils’learning motivation,and to explore the mediating mechanism of teacher-student relationship in parent-child relationship and learning motivation.Method:This study conducted a questionnaire survey on 213 pupils in Grades 5 and 6 in two schools in Beijing using Pianta’s teacher-student relationship scale revised by Qu,Dornbush’s parent-child intimacy scale revised by Zhang and the learning motivation scale adapted by Hu.Results:Gender,grade,whether they are the only child and to be a class cadre or not show significant differences in some dimensions of parent-child relationship,teacher-student relationship and learning motivation.The total scores of parent-child relationship,teacher-student relationship and learning motivation are positively correlated,and some sub dimensions are also significantly correlated.Parent-child relationship and teacher-student relationship have a significant positive predictive effect on learning motivation,and parent-child relationship has a significant positive predictive effect on teacher-student relationship.Teacher-student relationship plays a mediating role in the influence of parent-child relationship on learning motivation.Conclusions:Parent-child relationship can promote the relationship between teachers and students,and then enhance pupils’learning motivation.
基金The study procedures were approved by the First People’s Hospital of Shangqiu(2021-125-29).
文摘BACKGROUND Stroke patients often experience psychological distress,which can impact their intimate relationships with spouses,subsequently influencing their treatment and recovery.Physical activity is considered a key rehabilitation method for stroke patients.This paper aims to analyze whether psychological distress affects intimate relationship between spouses through physical activity.AIM To explore the mediating effect of physical activity between psychological distress and intimate relationship in stroke patients.METHODS A total of 256 stroke patients who underwent treatment at the First People’s Hospital of Shangqiu between July 2021 and July 2022 were enrolled in this study.The participants completed questionnaires,including the Kessler Psychological Distress Scale(K10),the Quality of Relationship Index(QRI),International Physical Activity Questionnaire,and a general information questionnaire.Data analysis were performed using SPSS 23.0.The Harman test was employed to detect common method deviations,and Spearman correlation was used for correlation analysis.The mediating effect was assessed using Process 3.4.1,with significance testing of the regression coefficients conducted using the bias-corrected percentile Bootstrap method(5000 iterations,95%confidence interval).Statistical significance was set at P<0.05.RESULTS The results showed that patients scored an average of 21.61±6.44 points on the K10,32.40±6.19 points on the QRI;the median physical activity level according to the International Physical Activity Questionnaire was 1861(566,2846)MET·min/w.The level of physical activity(the physical activity intensity of the patients reflected by the Interna-tional Physical Activity Questionnaire-Long Form scale)negatively correlated with psychological distress and intimacy(P<0.05),and positively correlated with each other(P<0.05),with the correlation stronger at lower physical activity levels compared to higher ones.The mediating effect of physical activity between psychological distress and intimate relationship was calculated to be 40.23%.Bootstrap analysis further validated the results.The mediating effect of psychological distress on intimate relationships through physical activity level was-0.284,with a confidence interval of-0.409 to-0.163,excluding 0,confirming a significant mediating effect of psychological distress on intimate relationships.CONCLUSION Physical activity significantly affects relationship between psychological distress and intimate relationships among stroke patients.Addressing the role of physical activity may have implications for improving patient outcomes and rehabilitation strategies.
基金The Teaching Reform Project of Harbin Engineering University in 2018(A practical study of college oral English teaching mode under the mechanism of TSCA)Free Exploration Project of Basic Scientific Research of Central Universities in 2020.
文摘This article examines the application of Teacher-student Collaborative Assessment in college students’oral English.Qualitative Study data were collected during 16 weeks teaching practice and included the students’and the examiner’s interviews.The result indicates that most students’oral English has been improved.They prefer this assessment model,and their English learning interest and proficiency has been enhanced as well.
文摘背景:观察性研究表明他汀类药物可能对骨密度具有保护作用,这使其成为潜在的骨质疏松症治疗药物之一。目的:通过孟德尔随机化方法来评估药物靶点介导的脂质表型与骨密度之间的因果关系。方法:从IEU Open GWAS数据库获取了与他汀类药物相关的单核苷酸多态性以及骨密度相关数据。主要分析方法是逆方差加权法,同时也使用了加权中位数法、简单中位数法、加权中值方法和MR-Egger回归法。使用β值和95%CI来评估他汀类药物与骨密度之间的因果关系;另外,进行敏感性分析以验证结果的可靠性,使用Cochran’s Q检验来评估异质性,使用MR-Egger截距检验是否存在水平多效性。使用留一法分析确定是否有单个或多个单核苷酸多态性影响了结果。结果与结论:他汀类药物作用靶点——3-羟基-3-甲基戊二酰辅酶A还原酶介导的低密度脂蛋白胆固醇与足跟定量超声骨密度(β=-0.086,95%CI:-0.117至-0.055,P=5.42×10^(-8))和全身骨密度(β=-0.193,95%CI:-0.288至-0.098,P=7.35×10^(-5))呈显著相关。该研究结果支持了他汀类药物对骨密度的保护作用。这些发现不仅加深了对胆固醇相关基因和骨骼健康关系的理解,还揭示了改善骨密度的潜在治疗靶点。
文摘背景:观察性研究表明,他汀类药物可能对骨关节炎(包括膝骨关节炎和髋骨关节炎)具有保护作用,然而他汀类药物与骨关节炎风险之间的关联尚未完全明确。目的:利用大规模人群全基因组关联研究(GWAS)的汇总数据,通过孟德尔随机化分析探究他汀类药物与骨关节炎风险之间的关联。方法:他汀类药物相关的单核苷酸多态性数据来自FinnGen最新第9版数据库,骨关节炎、膝骨关节炎和髋骨关节炎数据来自IEU Open GWAS、英国生物库和关节炎研究英国骨性关节炎遗传学(ArcOGEN)数据库。逆方差加权法为评估因果效应的主要分析方法。加权中位数法、简单中位数法、加权中值方法和MR-Egger回归用于补充说明。以比值比和95%CI评价他汀类药物与骨关节炎、膝骨关节炎和髋骨关节炎风险之间的因果关系。其次进行敏感性分析来验证结果的可靠性,使用Cochran’s Q检验异质性,MR-Egger-intercept检验是否存在水平多效性,留一法分析确定是否具有潜在影响的单核苷酸多态性等。结果与结论:①逆方差加权法结果表明,遗传预测的他汀类药物与骨关节炎(OR=0.998,95%CI:0.996-0.999,P=0.01)、膝骨关节炎(OR=0.964,95%CI:0.940-0.989,P=0.005)和髋骨关节炎(OR=0.928,95%CI:0.901-0.955,P=4.28×10^(-7))风险之间存在负向因果关系;②MR-Egger-intercept分析未检测到潜在的水平多效性(骨关节炎:P=0.658;膝骨关节炎:P=0.600;髋骨关节炎:P=0.141);③研究结果为观察性研究所述的他汀类药物降低骨关节炎、膝骨关节炎和髋骨关节炎风险提供了证据,他汀类药物治疗骨关节炎的具体机制需要进一步研究。
文摘目的:探讨“冬病夏治”全方配伍和无白芥子配伍延胡索乙素在模型家兔“肺俞”穴皮下药代动力学特征及药代动力学-药效动力学(PK-PD)模型的相关性。方法:支气管哮喘模型家兔随机分成延胡索单方组、缺白芥子组、全方组,微透析技术收集14 h穴位皮下透析液,液相色谱-质谱法(Liquid Chromatography Mass Spectrometry,LCMS)法检测方中君药延胡索主要成分延胡索乙素浓度,获得药代动力学参数;酶联免疫吸附试验(ELISA)法检测对应时间点模型动物血清中IgE水平,获得药效学参数;对药动学、药效学参数进行PK-PD模型拟合。结果:白芥子配伍后的药峰浓度(C_(max))、药时曲线下面积(AUC_(0-t))、平均滞留时间(MRT_(0-t))均显著增加(P<0.01,P<0.01,P<0.05),达峰时间(T_(max))提前(P<0.01);“浓度-时间-效应”三维曲线表明,方中有白芥子配伍时,药效出现更快、消退更慢,起效时间晚于峰浓度,具有一定滞后性。结论:动力学参数、PK-PD模型结果表明,白芥子配伍能够改变“方中君药”——延胡索的主要成分延胡索乙素穴位局部的皮下分布,促进方中君药有效成分快速吸收,延长滞留时间,在方剂中起到主药、改善其他药物分布的“双重”作用。
文摘Background: The Air Force Health Study collected reproductive outcomes for live-born children of male Air Force veterans of the Vietnam War. Methods: Dioxin values for participants were obtained from blood samples. Analyses were conducted of occurrence of 16 specific categories of birth defects and developmental disabilities. Children were categorized as conceived before and after the start of participants’ Vietnam War service. Children conceived before the start of Vietnam War service were treated as being conceived when their fathers had unquantifiable dioxin values. Children conceived after the start of Vietnam War service for participants with missing dioxin values were excluded from primary analyses, but were used to assess the impact of their exclusion on conclusions. Correlation between values for specific categories for multiple children fathered by the same participant was accounted for. The dose-response relationship was treated as a step function increasing for dioxin values larger than adaptively identified individual thresholds changing with the specific category. Results: For 15 of 16 specific categories, the probability of occurrence increased substantially for a sufficiently high dioxin level above identified thresholds. Exclusion of children due to missing dioxin likely did not affect these results. Conclusions: Results supported the conclusion of substantial adverse effects on a wide variety of specific categories of birth defects and developmental disabilities due to sufficiently high exposures to dioxin, a toxic contaminant of Agent Orange used for herbicide spraying in the Vietnam War. Results may hold more generally, but might also have been affected by a variety of limitations.
文摘A nationally representative sample of 1640 Chinese urban adolescents (mean age=14.5 years) and their parents and teachers were surveyed to examine the associations between relationships with teachers and parents and adolescents' developmental outcomes such as academic performance, psychological well-being, altruistic behaviors, and misconduct. Results showed that the quality of adolescents' relationships with teachers was highly correlated with adolescent outcomes, in most cases more so than for relationships with parents. Furthermore, such associations were the same across both genders and three grade levels. These findings suggest that teachers may play an especially significant role in Chinese adolescent development. This study adds to the small but growing literature on the importance of teachers as well as other non-parental adults in adolescent psychosocial development.
