食用植物油中邻苯二甲酸酯类的污染的风险分析与控制

2014-2015年,通过对235个批次植物油采用GC-MS-MS测定法对邻苯二甲酸酯(下称塑化剂)中的邻苯二甲酸二(2-乙基)己酯(DEHP)、邻苯二甲酸二异丁酯(DINP)和邻苯二甲酸二丁酯(DBP)3项指标残留量进行测定并统计。结果表明,超过限量标准的有49批次,超标率达20.8%。对塑化剂的污染源进行调查研究,认为直接接触油脂的塑料材质是主要污染源。为此提出了控制塑化剂污染的措施,应对包材、原料及生产中使用的塑料类管材等进行控制,从而可有效的解决植物油中的污染问题。     

Reducing the risk of choking hazards: Mouthing behaviour of children aged 1 month to 5 years

Young children have a natural tendency to mouth items to explore their environment. Mouthing carries mechanical and chemical hazard potential for injury to the child, for example if they swallow an item they may choke, they may cut themselves on sharp items, and certain chemicals are present in plastic items which may pose a risk to children. Few data are available on the time that young children mouth items, how they mouth, and what they mouth. This study gathered data on 236 children aged between 1 month and 5 years to supplement and extend existing data. Findings are presented of estimated average and maximum daily mouthing times for children, how they mouth, what they mouth, and whether the items mouthed were intended to be. A validation study was carried out to determine the accuracy of the parental observation method used to gather the data. The implications of the findings of this study are discussed with respect to reducing the potential for mechanical accidents in the home.     

Current activites in the field of child safety within CEN aand ISO

Abstract

Many countries have implemented safety and performance requirements for children's products. There is, however, a need to harmonize existing legislation and standards to facilitate a uniform flow of trade. At the same time, it is essential to extend existing requirements to restrict certain hazards which have not been covered in the past.

In CEN, the European Committee for standardization, several technical committees are developing European Standards for products to be used by or for children. On a global level as well, within ISO, there are standardization projects covering such products.

Child safety is the main objective for the standardization work on:

?Safety of toys (CENATC 52, ISO/TC 181)

? Child use and care articles (CEN/TC 252)

?Playground equipment for children LCEN/TC 136/SC 1)

? Children's furniture (CEN/TC 207, ISO/TC 136(

?Child-resistant packaging (CEN/TC 261/SC 2, ISO/TC 122) Children's products constitute a group of consumer products with large variations between the different products. Nevertheless, since they all come in contact with children (and their parents), several hazards associated with these products are similar for the various products. This is reflected in the work of CEN/TC 252, Child use and care articles, established in 1990.

To establish a horizontal framework for the hazard-based approach, CEN/ TC 252 created a working group with the task to specify general and common safety requirements (WG 6). Five working groups started the elaboration of product standards in parallel.

The traditional concept of a standardization project was found inadequate and other solutions were sought. Finally, it was decided to combine the results from working group 6 into one guidance document, to be published as a CEN Report.     

超高效液相色谱-串联质谱测定苹果制品中的棒曲霉素

建立了简单、快速测定苹果制品中棒曲霉素的超高效液相色谱-串联质谱确证检测方法。样品经乙腈提取,并经Mycrosep 228AflaPat多功能柱净化后,采用超高效液相色谱-串联质谱进行检测。标准溶液在2100μg/L范围内呈线性相关（r：0.999）,不同基质样品中添加回收率为83%98%,RSD〈10%。该方法操作方便、快速,灵密度高,可满足苹果制品中棒曲霉素测定的要求。     

Fatal violence among children under 15 years in four cities of South Africa, 2001–2005

Homicide rates for South African children were estimated at double the global average in 2000. This article presents a secondary data analysis of the National Injury Mortality Surveillance System (NIMSS), with full coverage in four major metropolitan cities. Child homicide rates for 2001–2005 were calculated within the 0–4, 5–9 and 10–14 year age groups. The homicide rates were similar to the global pattern, with higher rates for boys, and among children aged 0–4 years than for older children. Poisson regression, accounting for city level clustering, was used to investigate age, sex and period effects in the homicide rate. The model indicated that the gender difference was more marked in the 10–14 year age groups (RR = 2.17; 95% CI 1.97–2.38) than in the 5–9 year (RR = 1.43; 95% CI 1.27–1.62) with the 0–4 year age group in-between (RR = 1.80; 95% CI 1.55–2.10). These data confirm previous observations that fatal violence among children is a public health concern, but, given the high rates of homicide among South African adults and other competing public health problems, it is difficult to motivate for action to address the issue of violence against children. Nonetheless, there are sufficient indications that efforts to reduce childhood violence are urgently needed.     

Peer socialisation: brand-related bullying in the school classroom

ABSTRACT

This paper details a study of brand-related bullying in a school setting, among children approximately 11–18 years of age during their schooling experience. Defined as ‘repeated oppression, psychological or physical, of a less powerful person by a more powerful one’, authors have found self-reported rates of bullying above 25%. Our goal was to assess the role of brands and branded products in violent peer socialisation through bullying. Depth interviews lasting between 45 and 90 minutes that captured the retrospective reflection of forty-one 18–20-year-old college students were conducted and data were analysed hermeneutically with iterative comparison to discover emerging themes. Our findings suggest branded products were used to maintain existing social hierarchical structures and exclude non-conforming students through both covert and overt violence. We describe the influence strategies used and address strategies for dealing with the ‘unusual’, including the adoption of an alternative aesthetic for clothing selection.     

INTENSITY-BASED VALUATION OF RESIDENTIAL MORTGAGES: AN ANALYTICALLY TRACTABLE MODEL

This paper presents an analytically tractable valuation model for residential mortgages. The random mortgage prepayment time is assumed to have an intensity process of the form h _t = h ₀( t ) +γ ( k − r _t )⁺ , where h ₀( t ) is a deterministic function of time, r _t is the short rate, and γ and k are scalar parameters. The first term models exogenous prepayment independent of interest rates (e.g., a multiple of the PSA prepayment function). The second term models refinancing due to declining interest rates and is proportional to the positive part of the distance between a constant threshold level and the current short rate. When the short rate follows a CIR diffusion, we are able to solve the model analytically and find explicit expressions for the present value of the mortgage contract, its principal-only and interest-only parts, as well as their deltas. Mortgage rates at origination are found by solving a non-linear equation. Our solution method is based on explicitly constructing an eigenfunction expansion of the pricing semigroup, a Feynman-Kac semigroup of the CIR diffusion killed at an additive functional that is a linear combination of the integral of the CIR process and an area below a constant threshold and above the process sample path (the so-called area functional). A sensitivity analysis of the term structure of mortgage rates and calibration of the model to market data are presented.     

气相色谱—质谱法测定塑料产品中的三丁基锡和三苯基锡

建立了测定塑料产品中三丁基锡和三苯基锡含量的气相色谱-质谱法（GC-MS）,采用索式提取法提取,经四乙基硼化钠衍生后,GC-MS选择离子进行测定。结果表明,该方法简便、灵敏,线性相关性好,三丁基锡和三苯基锡的相关系数R2均大于或等于0.9990,测得三丁基锡和三苯基锡的检测低限分别为0.05 mg/kg和0.01 mg/kg,回收率分别在93.9%-96.6%和96.3%-105.0%之间,RSD分别在5.7%-6.4%和4.2%-5.6%之间,可用于塑料产品中三丁基锡和三苯基锡的检测。     

The effects of environmental attitude and fashion opinion leadership on textile recycling in the US

This study explored consumers' use of existing textile recycling options and tested relationships between general environmental attitudes, fashion opinion leadership and textile recycling behaviour. Nearly 51·2% of consumer textile products end up in landfills each year. Therefore, recycling of post-consumer textiles has implications for reducing the impact of consumer waste on the environment. The sample comprised a total of 277 male and female students from one Mid-western university. Factor analysis, correlation analysis and t-tests were the statistical methods used to analyse the data. Environmental attitude was found to be positively related to textile disposition method but not related to fashion opinion leadership. Gender differences were found for general environmental attitude as well as textile disposition method. These results have implications for consumer textile recycling initiatives. Suggestions for further study are given.     

To Launch or Not to Launch: An Empirical Estimate of New Food Product Success Rate

New product introduction is one of the most important activities for a company’s growth. It is generally accepted that new product introductions are essential to the health of food companies. Yet, many believe that most new products fail, therefore discouraging companies to introduce some new products. However, most of the estimates suggesting high failure rates are either anecdotal or qualitative. This article provides a quantitative approach to measuring new product success rates for food products and to show the relationship between the success of new product and entry strategies. This article uses a quantitative approach to measuring product success/failure exclusively for food products. The authors contend that failure rates for food products are not nearly as low, and success rates much higher than it was previously established in the literature and perceived by the industry professionals. There was a significant variability of success rates between various food groups ranging from 58% for both fruit and vegetables and desserts and ice-cream categories to 88% for baby food. Success rates also varied among the different introductory strategies of the new food products, ranging from 50% for new packaging to 75% for re-launch strategies.

Academics and practitioners usually quote very low success rates for new products based on subjective and/or strictly qualitative information. This empirical quantitative research shows that success rates for food products are much higher than previously reported. This should encourage greater use of new products to grow sales and profits. The previously reported low success rate may have led to the reluctance to introduce new products and therefore set many of the legacy food companies in their current poor financial condition.     

Critical insights of nano-based pharmaceutical,cosmeceutical and nutraceutical products: Empirical evidence from the consumption values perspective

Nanotechnology has received a widespread application recently in the development of pharmaceutical, cosmeceutical and nutraceutical (PCN) products through utilizing nanomaterials in the formulation and/or shaping of the finished products at nanoscale. This study investigates factors influencing Malaysia consumer decisions in nano-based PCN products purchase by consumption values theory (n = 181). The moderating effect of nano labelling on consumption decisions is examined. Nano labelling is found to strengthen the relationship between epistemic value and consumption decisions. The knowledge-based consumption decisions can be misled by inappropriate label information that has implications for policy makers and marketing practitioners.     

Do depicted suggestions of portion size on‐pack impact how much (un)healthy food children consume

In previous decades, portion and pack sizes of many foods tended to increase while, more recently, some foods started to downsize. These changes in actual portion sizes typically get coverage but less attention is given to the suggested portion sizes for multi‐serving food packages, and to what the impact is of the depicted portion sizes on‐pack. Using two studies with a mixed experimental design among young children, this paper examines the effects of depicted suggestions of portion size manipulation (regular vs. large—‘large’ corresponds to how brands typically depict portions). Both studies used a 2 × 2 × 2 crossover design, with the suggested portion size and food type as within‐ and order as between‐subjects manipulation. In Study 1, we used snacks (grapes and chocolate nuts). In Study 2, we compared two bread spreads (chocolate and cheese). In both the studies, we found that children ate more when presented with the larger depiction of the suggested portion size compared to the regular one. In Study 1, however, we found that children consumed more calories from the chocolate nut than the grape snack, while children did eat more grams of this healthier grape snack. We also showed that consumption in grams only differed between portion sizes when given grapes, which might be due to a possible ceiling effect of chocolate nut consumption. In Study 2, we also found a main effect for spread type as children ate more of chocolate compared to cheese spread. Our results indicate that this subtle on‐pack cue is persuasive. Moreover, policy makers and also marketers could use these insights to stimulate healthy eating in children.     

Dairy product consumption in South Korea

The per capita daily consumption of dairy products increased approximately 2450% in South Korea from 1969 to 1987. The purpose of the present study was to determine the frequency with which urban South Koreans consume 10 common dairy products, and to find the socio-economic group most responsible for the increase in dairy product consumption. Data were collected on the dietary patterns and socio-economic backgrounds of 923 women, 880 children and 772 men in urban areas. This study showed that seven of 10 dairy products investigated were consumed evenly by both sexes, all age groups and income levels. However, three recently-introduced products (i.e. cheese, ice cream and butter) were found to be consumed most frequently by young Koreans in the high income level.     

Consumer preferences and physical evaluation of shortbread stored in different packaging

The work aimed to assess the quality of crackers and sponge, vanilla and butter biscuits stored for 28 days in an original packaging, plastic box (Polypropylene 0.2 mm), food film (HDPE 10 mm) and paper bag. Sensory tests did not prove influence of packaging on the product quality. The authors observed: water desorption for sponge biscuits (ca. 5%), water absorption of 0.06%–1.84% for other biscuits, hardness increase of 20% ÷ 40% for sponge biscuits, hardness decrease by 10% ÷ 23% for vanilla biscuits, hardness increase for crackers in original packaging (+46%) and paper bag (+20%), hardness decrease for samples in food film (‐ 8%) and plastic box (?26%), hardness change for butter biscuits (from +9% to ?15%). Complex assessment proved that HDPE film and PP box most effectively protected the product against the environmental influence. Lengthening the biscuit lifetime requires introduction of innovations regarding the manufacturing technology and packaging design/structure. Presented tests indicate both the advantages and disadvantages of typical packaging, seen from the consumer perspective. It must be remembered that “manufacturer”—“consumer requirements” relation is one of the most important stages of product assessment and development. The authors believe that the obtained results are useful for packaging producers that are new on the market, but also for those which are experienced.     

Childhood and adolescent injuries in elementary schools in north-western Uganda: extent,risk and associated factors

Childhood injuries remain understudied in Uganda. The objective of this study was to determine the extent, nature and determinants of school-related childhood injury risk in north-western Uganda. A cohort of 1000 grade fives from 13 elementary schools was followed-up for one term. Survival and multi-level modelling techniques compared the risk rates across gender, schools and locations. Childhood injuries are common in north-western Uganda. Most of them occur during travel, breaks, practical classes and gardening, while walking, playing, learning and digging. Most injuries result from collisions with objects, sports and falls. Two-thirds of children receive first aid and hospital care. Times to injury were 72.1 and 192.9 person days (p = 0.0000). Gender differences in time to event were significant (p = 0.0091). Girls had better survival rates: cumulative prevalence of childhood injury was 36.1%; with significant gender differences (p = 0.007). Injury rate was 12.3/1000 person days, with a hazard ratio of 1.4. Compared to girls, boys had a 37% higher injury rate (p = 0.004). Rates varied among schools. Associated factors include sex and school. Rural–urban location and school differences do influence childhood injury risk. Childhood injuries are common: the risk is high, gender- and school-specific. Determinants include gender and school. Location and school contexts influence injury risk.     

用作漆雾絮凝剂的三聚氰胺甲醛树脂合成研究

三聚氰胺在盐酸的水溶液中与甲醛进行羟甲基化反应,对合成产物进行表征和性能测试,并深入研究了反应物配比、反应时间、反应温度对三聚氰胺甲醛树脂用作漆雾絮凝剂效果的影响及三聚氰胺甲醛树脂溶液的稳定性,找出了用做漆雾絮凝剂最佳的反应条件为n（三聚氰胺）：n（甲醛）：n（盐酸）=1：2：1,反应温度60℃及反应时间3h。     

A new C-OAR-SE-based content-valid and predictively valid measure that distinguishes brand love from brand liking

This article provides a new, C-OAR-SE-based, contrastive measure that distinguishes “brand love” from “brand liking.” The new measure is tested in an empirical study conducted among German university students about brands of products that they buy in four diverse product categories. From a consumer perspective, the incidence of consumers who have a loved brand in the category was found to be only 17 % for laundry detergent, 18 % for coffee, and 26 % for computers, peaking at 45 % in the fashion clothing category — findings that suggest that over half of young consumers do not acquire the state of brand love. Turning alternatively to a brand perspective, the findings indicate that, in general, about one in four of the brand’s customers will come to love the brand. Loving the brand, versus merely liking it, clearly pays off behaviorally — thereby demonstrating very good predictive validity for the new contrastive measure. Brand purchase or usage rate and brand recommendations were found to be approximately doubled for those who love the brand in comparison with those who merely like it.     

Exceeding the speed limit: prevalence and determinants in Iran

Speeding is one of the most common risk behaviours associated with crashes causing signficant injury. The objective of this study is to explore the prevalence and determinants of speeding on a road between Tehran and Hamadan, Iran. In a cross-sectional study in 2009, stretches of the road were studied including three groups of posted speed limits: < 50 km/h, 50–100 km/h and > 100 km/h. Each stretch was evaluated both in daylight and dark. Randomly identified driver's speed was checked by a handheld speed camera and then the driver was invited to participate in a survey. Statistical analysis was performed using Chi-Square, crude and adjusted odds ratio, 95% confidence interval and multiple logistic regression models. Overall, 52.8% of the drivers were travelling more than 10 km/h above the posted limit. Where limits were < 50 km/h, 74.6% of drivers were speeding. This declined to 46.9% for sections with limits between 50 and 100 km/h and to 36.9% for sections posted more than 100 km/h. Finally, more than half the drivers were observed to be speeding. Driving more than the posted limit was far more likely on the areas with the lowest posted speed limits, personal passenger vehicles, modern vehicles not using seat belts, and male drivers.     

Fatal violence among children under 15 years in four cities of South Africa, 2001-2005

Homicide rates for South African children were estimated at double the global average in 2000. This article presents a secondary data analysis of the National Injury Mortality Surveillance System (NIMSS), with full coverage in four major metropolitan cities. Child homicide rates for 2001-2005 were calculated within the 0-4, 5-9 and 10-14 year age groups. The homicide rates were similar to the global pattern, with higher rates for boys, and among children aged 0-4 years than for older children. Poisson regression, accounting for city level clustering, was used to investigate age, sex and period effects in the homicide rate. The model indicated that the gender difference was more marked in the 10-14 year age groups (RR?=?2.17; 95% CI 1.97-2.38) than in the 5-9 year (RR?=?1.43; 95% CI 1.27-1.62) with the 0-4 year age group in-between (RR?=?1.80; 95% CI 1.55-2.10). These data confirm previous observations that fatal violence among children is a public health concern, but, given the high rates of homicide among South African adults and other competing public health problems, it is difficult to motivate for action to address the issue of violence against children. Nonetheless, there are sufficient indications that efforts to reduce childhood violence are urgently needed.     

社会网络对农民工生育观念的影响——来自深圳调查的发现

利用西安交通大学人口与发展研究所2005年深圳市农民工调查数据,从社会网络视角实证分析了流动后农民工生育观念的影响因素。生育讨论网的弱关系和网络成员的生育行为,以及个体在城镇的滞留时间、初次流动时的年龄、受教育程度等因素对流动后农民工的生育观念产生了影响。