首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 10 毫秒
1.
QDII额度再度开闸,让怷首企盼的机构投资者喜笑颜开.基金、券商、银行等各路金融机构纷纷展开"攻势",积极争取外汇额度,希望能分得一块"蛋糕".不过,QDII产品还面临着市场是否再度认同的严峻考验.  相似文献   

2.
3.
Are services better for climate change?   总被引:1,自引:0,他引:1  
Embodied greenhouse gas (GHG) emissions and their structure of inducement by the supply-chain networks of 480 goods and services in the United States are analyzed for 44 GHGs. Producing a dollar of a product or service generates an average of 0.36 kg of CO2 equivalent GHGs onsite, increasing to 0.83 kg when supply-chain-induced emissions are taken into account. Services produce less than 5% of total U.S. GHG emissions directly, and their direct GHG emission intensities per dollar output are much less (0.04 kg C02 equiv/dollars) than those of physical products, even when supply-chain-induced emissions are included (0.47 kg C02 equiv/dollars). When both supply-chain effects and the volume of household expenditures are taken into account, however, household consumption of services excluding electric utilities and transportation services proves to be responsible for 37.6% of total industrial GHG emissions in the United States, almost twice the amount due to household consumption of electric utility and transportation services. Given the current structure of GHG emissions, a shift to a service-oriented economy is shown to entail a decrease in GHG emission intensity per unit GDP but an increase, by necessity, in overall GHG emissions in absolute terms. The results are discussed in the context of U.S. climate change policy.  相似文献   

4.
5.
6.
7.
Oil palm wood (OPW) and oil palm empty fruit bunches based particleboard (OPEFBP) furniture components were tested on edge in order to determine their resistance to fatigue. Tests were carried out at selected stress levels that corresponded to specific percentages of the material’s ultimate strength (modulus of rupture—MOR). Generally, the materials fatigue life decreased as the levels of stress increased, and the allowable design stresses for the OPW and OPEFBP furniture components could be set at 40% of their respective MOR. The study also showed that OPW does not perform as well as solid Rubberwood in cyclic loading, but the OPEFBP showed similar fatigue performance to the conventional Rubberwood-based particleboard.  相似文献   

8.
9.
This paper analyses consumers' preferences for cheese packaging. The methodology used is a two-step approach. Firstly, focus groups were developed to identify the most relevant attributes and levels when choosing a cheese package. Secondly, a choice experiment was applied to analyse the influence of those attributes on consumers' buying decisions. Results show that consumers preferred a plastic package with rectangular shape, with a resealing system and unsliced format, with easy opening and providing additional information. However, cluster analysis generated three well-defined consumer segments based on gender, purchase frequency and family size, which showed different preference patterns. The results of this study would be relevant for cheese producers when developing new marketing strategies or redesigning cheese packaging formats.  相似文献   

10.
The membrane (Milk Fat Globule Membrane – MFGM) surrounding the milk fat globule is becoming increasingly studied for its use in food applications due to proven nutritional and technological properties. This review focuses first on current researches which have been led on the MFGM structure and composition and also on laboratory and industrial purification and isolation methods developed in the last few years. The nutritional, health benefits and techno-functional properties of the MFGM are then discussed. Finally, new techno-functional opportunities of MFGM glycoproteins as a possible ingredient for Lactic Acid Bacteria (LAB) encapsulation are detailed. The ability of MFGM to form liposomes entrapping bioactive compounds has been already demonstrated. One drawback is that liposomes are too small to be used for bacteria encapsulation. For the first time, this review points out the numerous advantages to use MFGM glycoproteins as a protecting, encapsulating matrix for bacteria and especially for LAB.  相似文献   

11.
ABSTRACT

Within the particular context of controlling chemical residues in food, an alternative to targeted approaches has emerged; it consists in the characterisation of physiological perturbations induced upon exposure of animals to a given chemical substance/class of substances to highlight suitable biomarkers addressing safety and/or regulatory issues. Metabolomics in particular has been investigated in the hope of identifying such biomarkers, and a range of studies have demonstrated the efficiency of the strategy. Until very recently, steps remained to be taken towards official or commercial implementation of corresponding tools. In particular, the lack of guidelines and criteria to validate such methods that do not target specific chemical species per se, constituted a bottleneck. In the present work, a metabolomics model dedicated to the detection of β-agonist administration in bovines has been developed and fully validated; criteria (selectivity, robustness, stability, suspicion threshold definition, false positive and false negative rates) have been proposed in agreement with EU expectations (Dec 2002/657), enabling demonstration that performances comply with screening requirements.

Although some of the biomarkers involved in the prediction model remain un-elucidated, the corresponding LC-HRMS method has recently been ISO17025 accredited, allowing for the very first official implementation of a metabolomics based strategy within French National Monitoring Plans.  相似文献   

12.
Blueberry plantations in Chile are oriented exclusively towards exports to northern hemisphere countries; however, this fruit has recently been introduced into the domestic market due to the increased supply and a fall in export market prices. Based on the previously mentioned, the objectives of the present study were to evaluate consumer preferences for 3 species of berries (blueberries, strawberries, and raspberries), sold loose (unpackaged) as opposed to packaged and branded, at different prices, in one of the principal blueberry producing areas of Chile; and to distinguish consumer segments by their preferences. To do this a survey was applied to 400 people in the Araucanía Region of southern Chile, who were responsible for purchasing fruit for their households. Conjoint analysis showed a preference for raspberries and strawberries over blueberries, packaged and branded, at the lowest price. Total of 2 principal segments were distinguished by cluster analysis: "price sensitive" (42.7%), who preferred strawberries, and "sensitive to species of berry" (47.5%), who preferred raspberries and strawberries. The segments presented different profiles in their demographic make-up and fruit consumption behavior. Strategies are discussed that might reverse the low acceptance of blueberries in the Chilean domestic market. PRACTICAL APPLICATION: This study presents information on the introduction of new fresh foods into the market.  相似文献   

13.
<正>自古机遇与危机相伴相随,社会高速发展给我们生活带来便捷的同时,也带来了更为激烈的竞争。青少年为了学业有成,埋头苦战题海;成年人为了事业进步,不惜加班加点。你在为学习、工作拼命打拼的时候,是否考虑过你的眼睛在不经意之间受到了很大的损伤?殊不知,长时间的近距离用眼,除了高负荷的肌肉紧张之外,还有那些你看不见的伤害、电磁波辐射、狭小学习工作空间里的视觉污染,都会是你眼睛潜在的健康杀  相似文献   

14.
<正>自古机遇与危机相伴相随,社会高速发展给我们生活带来便捷的同时,也带来了更为激烈的竞争。青少年为了学业,埋头苦战题海;成年人为了事业,不惜加班加点。你在为学习,工作拼命打拼的时候,是否考虑过你的眼睛在不经意之间受到了很大的损伤?殊不知,长时间的近距离用眼,除了高负荷的肌肉紧张之外,还有那些看不见的伤害,电磁波辐射、狭小学习工作空间里的视觉污染都会是你眼睛潜在的健康杀手。所以,保护眼睛健康,需要从一副好镜片开始。长时间在户外作业,或者生活在高原等紫外线照射较为强烈地区的人群,更需要一副好的眼镜来应对这些潜在的危害。  相似文献   

15.
The past 5 years have seen some major successes in terms of global measurement and regulation of persistent, bioaccumulative, and toxic (PB&T) chemicals and persistent organic pollutants (POPs). The Stockholm Convention, a global agreement on POPs, came into force in 2004. There has been a major expansion of measurements and risk assessments of new chemical contaminants in the global environment, particularly brominated diphenyl ethers and perfluorinated alkyl acids. However, the list of chemicals measured represents only a small fraction of the approximately 30,000 chemicals widely used in commerce (>1 t/y). The vast majority of existing and new chemical substances in commerce are not monitored in environmental media. Assessment and screening of thousands of existing chemicals in commerce in the United States, Europe, and Canada have yielded lists of potentially persistent and bioaccumulative chemicals. Here we review recent screening and categorization studies of chemicals in commerce and address the question of whether there is now sufficient information to permit a broader array of chemicals to be determined in environmental matrices. For example, Environment Canada's recent categorization of the Domestic (existing) Substances list, using a wide array of quantitative structure activity relationships for PB&T characteristics, has identified about 5.5% of 11,317 substances as meeting P & B criteria. Using data from the Environment Canada categorization, we have listed, for discussion purposes, 30 chemicals with high predicted bioconcentration and low rate of biodegradation and 28 with long range atmospheric transport potential based on predicted atmospheric oxidation half-lives >2 days and log air-water partition coefficients > or =5 and < or =1. These chemicals are a diverse group including halogenated organics, cyclic siloxanes, and substituted aromatics. Some of these chemicals and their transformation products may be candidates for future environmental monitoring. However, to improve these predictions data on emissions from end use are needed to refine environmental fate predictions, and analytical methods may need to be developed.  相似文献   

16.
17.

Objectives

To compare the effectiveness of health education on smoking cessation for all smokers regardless of their willingness to quit smoking and cumulative environmental changes including designation of smoking places, legislation, and price rise.

Design

Comparison of smoking cessation rates over two time periods: the period of health education on smoking cessation (1997–1999), and the period of cumulative environmental changes (2002–2004).

Setting

An occupational setting in a radiator manufacturing factory in Japan.

Subjects

All habitual male smokers who remained in the worksite through the pertinent time period (n  =  202 in the period of health education and n  =  170 in the period of environmental changes).

Main outcome measurements

Smoking cessation rates at the end of each time period.

Results

The smoking cessation rates over the periods of health education and environmental changes were 8.9% and 7.1%, respectively. There was no difference between these two proportions in a χ2 test (p  =  0.513). The age adjustment did not significantly alter the cessation rate.

Conclusions

Cumulative environmental changes are fairly effective in promoting smoking cessation, and may yield similar smoking cessation rates as a health education intervention reaching all smokers regardless of their willingness to quit smoking.  相似文献   

18.
首批QDⅡ出师不利,致使投资者损失掺重。QDⅡ基金的发行也因而一度中止。但是自2009年来,国际经济的好转让QDⅡ的投资环境大为改善,今年上半年其业绩表现曾连续两月超越A股基金。优异的盈利表现以及发行审批的开闸,让阔别已久的QDⅡ基金重新进入投资者的视野。  相似文献   

19.
There is a growing awareness in the field of consumer and sensory research to include emotional measurements when evaluating food products and beverages. The present paper provides an overview of the recent measures used for emotional measurements within the context of food products and beverages. Further, it discusses to what extent questionnaires might be the best measurement to capture consumer’s emotions in the field of food science by focusing on three aspects of emotion measurement, namely (i) what do we want to measure, (ii) how do we measure it and (iii) what is the added value of the measurement.  相似文献   

20.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号