芦丁的提取及其在小鼠试验中表现的生物活性综述

芦丁作为黄酮类主要成分的代表,受到科研界的高度重视,目前芦丁的提取应用技术比较成熟。将从芦丁的来源,提取技术以及芦丁在小鼠试验中表现出的生物活性,芦丁的研究前景几个方面进行综述。重点研究芦丁的生物活性在小白鼠体内的表现。为芦丁的工业生产和应用提供参考。     

外出务工对流出地家庭生计策略的影响——来自西部山区的证据

本文首先基于可持续生计框架,引入劳动力迁移的视角,之后改进农户模型以分析劳动力外出务工对流出地家庭生计策略的影响机理,并利用陕西秦岭北麓地区1074户的调查数据进行验证。结果发现:外地打工虽然有利于家庭的资本积累,但会阻碍流出地非农生计活动的参与和劳动力供给;本地打工在促进资本积累的同时,对参与林(经济)作物种植、养殖和自营等生计活动有显著的促进作用,但过多的劳动力外出务工仍然会减少本地其它活动的收入水平。     

找准切入点 激活企业党的组织建设

施工企业工程项目点多面广,人员分散,管理难度大,党的基层组织未能很好地建立或发挥作用。开展＂党员1＋1工程＂主题实践活动,有助于加强基层党组织建设,壮大党员队伍,增强企业党的凝聚力、吸引力和战斗力,密切党群关系、干群关系,夯实党的基层基础,实现＂人才兴企＂战略,营造企业和谐稳定发展的大环境,对增强党在企业中的政治核心作用起到积极的作用。     

光学活性偶氮染料的结构修饰及应用进展

文章介绍了光学活性偶淡染料的作用机理及在分子结构合成和改性方面的应用,指出了当前存在的问题及它的发展潜力。     

The link between hunting goals and strategy and harvest outcome

Abstract

This article explores relationships among hunting goals, hunting strategies, and harvest success and attempts to assess if and how the relationships between harvest and nonharvest goals and harvest outcomes change in the presence of selected intervening hunting strategy variables. Log‐linear analysis examines the relationship among harvest outcome, hunting goals, and hunting strategies. Hunting strategies were found helpful in explaining the patterns of harvest outcome, suggesting that how a person hunts may be as important as why they hunt. Hunting strategy is seen as a viable concept for use in future investigations.     

The influence of experiential marketing and activity involvement on the loyalty intentions of wine tourists in Taiwan

This study assesses a behavioural model that uses latent variables of experience of experiential marketing, activity involvement, satisfaction and loyalty intentions of wine tourists in Taiwan. A total of 871 usable questionnaires were collected. Confirmatory factor analysis and structural equation model analysis were performed using LISREL 8.70 for Windows. Analytical results, which further elucidate the behavioural models of wine tourism, suggest that experience of experiential marketing, activity involvement and satisfaction significantly affect the loyalty intentions of wine tourists. Satisfaction played a mediating role in the behavioural model. This study provides further insight into the behavioural modelling of wine tourism.     

The role of exercise during adolescence on adult happiness and mood

The main research question for this paper was: Does exercise during adolescence predict happiness and positive moods in adult life? Data was collected through an online questionnaire (N?=?438). The questionnaire included a measure of happiness (The Subjective Happiness Scale), moods (The Profile of Mood States) and questions on current exercise and exercise during adolescence. Exercise during adolescence was a significant predictor for positive moods, even when controlling for current exercise. There is also a connection between exercise during adolescence and happiness, although it appears to be that exercise during adolescence predicts exercise in adult life, which in turn has a connection to happiness. Exercise was not a significant predictor of negative moods in adulthood.     

It’s so hot: predicting climate change effects on urban tourists’ time–space experience

Abstract

Progressive changes in mean annual temperatures are arguably the strongest evidence of ongoing climate change. In destinations with a Mediterranean climate, in contrast to the colder months, during summer, rising air temperatures are believed to inhibit tourist movements and activities, and consequently affect tourists’ evaluation of and satisfaction with their experiences. To the best of our knowledge, no previous study has investigated the potential impact of climate change on tourists’ time–space activity using actual behavioural tracking-based information. Data collected via GPS technology and a post-visit survey of tourists (n = 404) visiting Lisbon during the summer were analysed via structural equation modelling (PLS-SEM). The results report empirical evidence of the present impact of (summer) weather on urban tourists’ time–space activity and on their intra-destination experience evaluation. Specifically, maximum air temperature is found to have a significant negative effect on overall satisfaction, while the meteorological conditions of the entire day reveal a significant impact on tourists’ activities and movements. The results are particularly useful for the sustainable adaptive management of urban attractions and destinations that are especially vulnerable to climate change, as well as in managing its adverse impact on tourists’ experiences.     

Behavioral Adaptation of Alpine Skiers to Climate Change: Examining Activity Involvement and Place Loyalty

This study employed a visitor survey to analyze the influence that changing climatic conditions have on the substitution behaviors of alpine skiers (activity, spatial, temporal). It further focuses on the role that activity involvement plays in influencing behavioral adaptations (i.e., substitution) and also the extent to which place loyalty is affected. The Modified Involvement Scale (MIS) was used to segment respondents based on high, medium, and low levels of leisure involvement with activity. Highly involved skiers were more likely to change their skiing behavior as a result of poor snow conditions than were less involved individuals. Pritchard's Psychological Commitment Index (PCI) provided evidence that less involved skiers exhibit lower levels of commitment to particular service providers than do highly involved individuals.     

Comparing perceptions of the important environmental characteristics of the places people engage in consumptive,non-consumptive and spiritual activities

Managers, risk assessors, tribal leaders, public policy makers, and the public are increasingly interested in the characteristics of natural habitats where people like to engage in recreational, subsistence, or spiritual activities. Such data are critical for making decisions about human and ecological risk deriving from contaminants, as well as resource protection and land use. In this study we examined the perceptions of Native Americans and Caucasians about the natural places they prefer to engage in consumptive, non-consumptive, and spiritual activities which might expose them to contamination or other stressors. Subjects were interviewed at Post Falls and Fort Hall in Idaho, Cookeville in Tennessee, and at two sites in Long Island, New York, and northern New Jersey. Our objectives were to determine differences in perceptions as a function of category of activity, type of activity, location, and ethnicity. The data indicate that: (1) the highest rated characteristics were unpolluted water, lack of radionuclides that present a health risk, clean air, and no visible smog in the air; (2) all four were among the top-rated ones for each of the four sites; (3) all four were among the top-rated ones for places to perform consumptive, non-consumptive, and spiritual activities; (4) at each site, mean ratings were lowest for spiritual activities; (5) where there were differences, Native Americans rated all characteristics as more important than did Caucasians; and (6) where there were differences, ratings in New Jersey/New York were lower than those from respondents elsewhere. There are many statistically significant response differences between Native Americans and Caucasians, but overall one is impressed by the similarity in relative rankings. These perceptions will be helpful to risk assessors and risk managers in evaluating risk and potential solutions, to land managers for managing environmental resources, and to public policy managers for evaluating how people view natural environments.