"利剑斩污"行动下石家庄市挥发性有机物的污染特性变化研究

为研究石家庄市在"利剑斩污"行动管控期和非管控期挥发性有机物(VOCs)的污染特性变化,在2个时间段内对石家庄市3个国控点进行采样分析。通过苏玛罐(SUMMA罐)进行样品采集,利用气相色谱/质谱联用(GC/MS)仪对石家庄市区3个国控点的VOCs进行定性定量检测分析。结果表明,监测期间主要的特征污染物是二氯甲烷、二氯丙烷、苯和甲苯。与非管控期间相比,管控期间各污染物的质量浓度均有所降低,总VOCs平均质量浓度降低45.107μg/m~3,二氯甲烷质量浓度降低8.796μg/m~3,二氯丙烷质量浓度降低3.750μg/m~3,苯质量浓度降低18.285μg/m~3,甲苯质量浓度降低16.895μg/m~3。大气环境调控策略的实施,有效降低了VOCs浓度,减少了空气污染程度,空气质量改善效果显著。"利剑斩污"行动期间采取的相关举措,对于制定常态化下VOCs的防治对策具有一定的参考价值。     

SPME-GC-MS分析皖西白鹅蛋挥发性成分

以皖西白鹅蛋的熟蛋清和熟蛋黄为研究对象,采用顶空固相微萃取-气相色谱-质谱联用技术对皖西白鹅蛋的挥发性化合物进行测定和分析。结果表明,从皖西白鹅蛋的熟蛋清、熟蛋黄中分别检测出48种、24种挥发性化合物,鉴定到的挥发性物质主要包括烷烃类、烯烃类、醇类、酮类、酯类、含硫化合物、杂环类及硅化物等。研究结果为鹅蛋的品质和风味提供了重要的信息,也为鹅蛋的生产加工方式提供一定的参考。     

The Effects of Food Color on Perceived Flavor: A Factorial Investigation in India

We extend research testing the effects of food color on flavor to a new cultural setting—India. We test color’s effect at three levels: flavor identification, perception, and preference. One hundred twenty-two graduate students at an Indian business school enrolling students from all parts of India were assigned the task of tasting and evaluating an orange-flavored carbonated water. Color at two levels (purple and orange) and label information at two levels (told orange flavor, told grape) were manipulated in a full factorial, between-subjects design. Results confirm that food color affects the consumer’s ability to correctly identify flavor as well as to form distinct flavor profiles and preferences. Food color dominates other flavor information including labeling and taste, though the strength of the effect is less pronounced in this setting. Strategic alternatives for the effective deployment of food color for promotional purposes are recommended.     

马克思主义文艺思想的现实指引——六中全会决定和胡锦涛讲话理论溯源

党的十七届六中全会关于深化文化体制改革推动社会主义文化大发展大繁荣若干重大问题的决定，和胡锦涛总书记在中国文联第九次和中国作协第八次代表大会上的讲话，都从马克思主义文艺思想出发，在艺术实践规律的基础上提出并阐发了许多文艺理论的重大问题。而关于文艺家要承担历史责任、提倡文以载道、鼓励文艺原创、自觉抵制低俗之风等，都是当前深具实践意义与艺术学理意义的重大问题。如从理论与实际相结合的意义上加以深入领会，必然会有力推动社会主义文艺的大发展大繁荣的伟大战略目标的早日实现。     

TASTE FOR VARIETY AND OPTIMUM PRODUCT DIVERSITY IN AN OPEN ECONOMY

We extend the Benassy 'taste for variety' model to an open economy setting. With the Benassy effect, the market equilibrium is inefficient, openness reduces the varieties provided in the unconstrained optimum and there are potential gains from international coordination.     

溶液法乙丙橡胶脱钒技术

乙丙橡胶脱催处理是其采用溶液聚合法制造工艺中的重要过程之一,旨在脱除残留在产品中的催化剂,保证产品质量稳定.主要论述了溶液聚合法工业生产乙丙橡胶的几种脱钒方法,如碱水洗涤法、水洗转相法、活性金属沉淀法、极性溶液萃取法、水油乳液法、酸洗水洗法等.     

配合物组成及稳定常数的测定

利用分光光度法测定配合物的组成及稳定常数,介绍了2种背景吸光度的误差近似计算方法与2种测定稳定常数的数据处理方法,并以Cu(Ⅱ)-磺基水杨酸配合物为例,详细介绍了实验过程,对比了不同的处理方法与误差近似计算方法对于结果的影响。     

消费与地位追求:一个演化论的分析视角

地位是人类永恒追求的目标,是人的存在性意义之源。不过,由于社会结构的制约,不同时代、不同阶级(阶层)的人们具有不同的机遇结构,他们使用消费来追求地位的方式也大异其趣。在传统社会中,由于存在制度性的不平等,社会地位相对稳定。统治阶级更多地使用消费来确证而非追求其社会地位。在现代(工业)社会中,人们更多的是使用炫耀性消费来炫耀其经济资本,从而来追求其社会地位。在后现代社会中,以文化资本为基础的品味消费则成为人们地位争夺的新方式。     

Marketplace orchestration of taste: insights from the Bridgewater Hall

ABSTRACT

The aim of this paper is to explore how a concert hall can orchestrate and shape individuals’ classical music tastes. The paper is based on an 8-month ethnography at the Bridgewater Hall concert venue in Manchester. Our emergent findings illustrate how classical music tastes are influenced via the spatial meanings of the concert hall. These meanings include various physical, historical and sociocultural aspects that are revealed in the context of the Bridgewater Hall. Our study contributes to various streams of consumer culture theory research and opens up avenues for future research on the interrelationships of space and place with taste.     

关于配合物稳定常数的测定

介绍了利用光学密度法测定配合物的组成及其稳定常数的原理,并以Cu2+-磺基水扬酸-水体系为例,详细介绍了使用光学密度法测定配合物组成及其稳定常数的实验过程以及数据处理过程。