Crops transformed to express Bacillus thuringiensis (Bt) toxins can cause close to 100% mortality of certain target pest species. This study assessed the effect of target pest reduction on the predatory insect Chrysoperla carnea (Stephens) in the presence of alternative prey. Numbers of lacewings recovered from Bt oilseed rape (cultivar Oscar, event O52) did not differ significantly from number...

The aim of this study is to assess the interception and transfer to edible part of wet deposited 134Cs and 85Sr to spring oilseed rape and spring wheat and the dependency of the intercepted fraction on the development stage e.g. the total plant biomass. The radionuclides, 134Cs and 85Sr, were deposited at six different development stages using a rainfall simulator. The results showed that there...

background: this study aimed to assess the relationship between meal frequency with mental distress and violent behavior among a nationally representative sample of iranian children and adolescents. materials and methods: the participants of this national study were 14,880 iranian students with 6 to 18 years of age. they were selected from urban and rural regions of iran by multi-stage cluster ...

OBJECTIVES To assess the potential nutritional contribution of meals provided in a sample of community programmes for homeless individuals, to determine the effect of food donations on meal quality and to develop food-based guidance for meals that would meet adults' total nutrient needs. SETTING Toronto, Canada. DESIGN An analysis of weighed meal records from eighteen programmes. The energy...

OBJECTIVE To examine whether television viewing, computer game playing or book reading during meals predicts meal skipping with the aim of watching television, playing computer games or reading books (media meal skipping). DESIGN A cross-sectional study was conducted using a standardized self-administered questionnaire. Analyses were controlled for age, gender and BMI. SETTING Data were obt...