187菌株的形态及生物学特性

本文对苏云金杆菌 187菌株的形态及生物学特性进行了观察和研究,探明187菌株是属于苏云金杆菌H_(14)型的一个新品系。     

新氢能源储蓄罐用奥氏体不锈钢速度敏感性研究

为了研究31OS奥氏体不锈钢的速度敏感性对材料成形性能的影响,通过不同应变速率下的单向拉伸试验获取 相对应的工程应力应变数据,将其转化为真实应力应变数据后,对真实应力应变数据进行计算,求得相应变形速率下的 各硬化参数。基于上述拟合结果,选取适当的本构方程模型,进行非线性拟合,得到一个受应变速率影响的本构方程。 通过笔者研究,确定31OS奥氏体不锈钢的硬化行为确实受应变速率影响,且本文所拟合的本构方程可对该材料的速度 敏感性作出准确判断。     

Self‐assessed consequences of unemployment on individual wellbeing and family relationships: A study of unemployed women and men in Finland

Weckström S. Self‐assessed consequences of unemployment on individual wellbeing and family relationships: a study of unemployed women and men in Finland The present study investigated how family situation and gender affect the experience of unemployment. The sample consisted of 494 Finnish women and 387 Finnish men who had been registered as unemployed for at least 3 months. The main method used in the study was analysis of covariance. Women assessed the consequences of unemployment on their individual wellbeing and on the parent–child relationship less negatively than men, but there was no corresponding gender difference concerning spousal relationship. Lone mothers experienced the change in individual wellbeing slightly more negatively than women in other family situations; this difference was in part related to financial strain. Financial strain and non‐financial work motivation predicted negative changes in individual wellbeing and in spousal relationship for both genders. Parent–child relationships were, however, independent from these variables. The way family relationships were affected was connected to changes in individual wellbeing.     

Combining professional work with family responsibilities – a burden or a blessing?

This paper investigates job-related distress and satisfaction with the work--family interface in various combinations of professional work and family responsibilities in Sweden. The study is based on the self-reports of 1,764 male and female university graduates in paid employment and with children at home. For both women and men, conditions at work seem to be most important. However, the division of responsibilities between partners was also found to have an impact, but in different ways for women and men. Only in families where both partners are gainfully employed and share the domestic work and financial responsibilities, was the psychological well-being and the work--family interface satisfactory for both women and men. In other families, negative effects for either women or men are noticed. The conclusion is that multiple roles and shared responsibilities and demands in the private sphere promote health among both women and men.     

Self-Esteem and Mastery Trajectories in High School by Social Class and Gender

Using longitudinal data from 769 white adolescents in the Midwest, this research applies a social structure and personality perspective to examine variation in self-esteem and mastery trajectories by gender and SES across the high school years. Analyses reveal that high SES adolescents experience significantly steeper gains in self-esteem and mastery compared to low SES adolescents, resulting in the reversal of SES differences in self-esteem and the emergence of significant SES differences in mastery. Pre-existing gender differences in self-esteem narrow between the 9th and 12th grade because self-esteem increases at a faster rate among girls than boys during high school. These SES and gender differences in self-concept growth are explained by changes in parent-adolescent relationship quality and stress exposure. Specifically, boys and adolescents with lower SES backgrounds experienced steeper declines in parent-adolescent relationship quality and steeper gains in chronic work strain compared to girls and low SES adolescents, respectively.     

Assessing the cumulative effects of stress: The association between job stress and allostatic load in a large sample of Chinese employees

Abstract

Job stress can lead to various system dysfunctions, but until now no reliable biomarkers for its assessment have been identified. Allostatic load (AL) is an index that enables the cumulative effect on the body of chronic stress to be assessed, and is derived from a set of relevant biological measures. In this study, a 13-parameter index (building on the original 10-item index) was used to examine the relationship between job strain and AL. Participants were 1219 healthy Chinese employees. Job strain was measured using the Job Content Questionnaire, and AL was assessed by various possible stress responses, including blood pressure, cholesterol, indicators of glucose metabolism, and hormone and inflammation markers. AL in the high job strain group differed sharply from that in the low job strain group. The AL score was positively associated with age and educational level. Several individual parameters also differed between the two groups. Men scored significantly higher on AL and cardiovascular and metabolic health outcomes, whereas for women the associations appeared in the biological indicators. Analyses indicated that decision latitude (DL) and job demands were significantly related to AL. Job demands correlated significantly with the primary biological indicators and DL with the secondary health outcomes. In conclusion, this study provides evidence of the value of measuring allostatic load in assessing the chronic effects of job stress.     

絮凝剂产生菌生长特性的研究

通过多点采样 ,多次反复筛选 ,从工大生活污水中筛选出一株有高絮凝活性的菌 GY3 7.经试验对内蒙古天然碱碱泥有高絮凝作用 ,使用特定的培养基在特定的培养条件下 ,用比浊法、干重法和活菌计数法三种方法测定了絮凝剂产生菌GY3 7的生长曲线 ,并对三种方法所得曲线进行比较 .还测出了对数生长期时菌体复制一代所需时间     

水压下大应变测试密封技术研究

水压下的应变测试中测试系统的密封防护是应变测量成功与否的关键。针对在水压及大应变条件下,常规密封 防护方法易出现密封防护剂松脱,难以保证绝缘和密封性能的情况,文章提出了水压下大应变测试的密封技术。通过试 验研究了环氧树脂+硅橡胶、硅橡胶对大应变的适应性,设计了压力温度的补偿方法和应变测试系统的密封工艺。水压 为2.0 MPa,应变为4.5%的实验案例表明,文章提出的水压下大应变测试密封技术可行并且有效。     

Functional Status of the Non-Institutionalized Elderly in Sweden

Abstract

Functional ability was assessed in a randomly recruited population of elderly persons, totalling 553 individuals, living in their homes in four municipalities in central Sweden. These subjects were interviewed at home, using the Sickness Impact Profile. The response rate was 75%. No significant differences in functional ability were found among the municipalities. For those subjects 85 years old or more, average physical and overall functional ability was significantly worse than among the 81-84 year olds. Women had a significantly lower functional ability than men. Less well educated elderly persons had lower psychosocial and overall functional abilities than had the better educated. Physical dysfunctionbut not psychosocial dysfunctionwas significantly associated with formal and informal home help.     

Responding to "Family Social Work Practice: From Therapy to Policy"

No abstract available for this article.