Global regularity of weak solutions to quasilinear elliptic and parabolic equations with controlled growth

We establish global regularity for weak solutions to quasilinear divergence form elliptic and parabolic equations over Lipschitz domains with controlled growth conditions on low order terms. The leading coefficients belong to the class of BMO functions with small mean oscillations with respect to $x$.Comment: 24 pages, to be submitte

A new and sensitive reaction rate method for spectrophotometric determination of trace amounts of thiourea in different water samples based on an induction period

BACKGROUNDAgrilus bigutattus (Fabricius) is a forest pest of increasing importance in the United Kingdom. The larvae damage weakened native oaks and are thought to contribute to premature tree death. Suspected links with acute oak decline (AOD) are not yet confirmed, but AOD-predisposed trees appear to become more susceptible to A. biguttatus attack. Thus, management may be necessary for control of this insect. To explore the possibility of monitoring beetle populations by baited traps, the host tree volatiles regulating A. biguttatus-oak interactions were studied. RESULTSBiologically active volatile organic compounds in dynamic headspace extracts of oak foliage and bark were identified initially by coupled gas chromatography-electroantennography (GC-EAG) and GC-mass spectrometry (GC-MS), and the structures were confirmed by GC coinjection with authentic compounds. Of two synthetic blends of these compounds comprising the active leaf volatiles, the simpler one containing three components evoked strongly positive behavioural responses in four-arm olfactometer tests with virgin females and males, although fresh leaf material was more efficient than the blend. The other blend, comprising a five-component mixture made up of bark volatiles, proved to be as behaviourally active for gravid females as bark tissue. CONCLUSIONSThese initial results on A. biguttatus chemical ecology reveal aspects of the role of attractive tree volatiles in the host-finding of beetles and underpin the development of semiochemically based surveillance strategies for this forest insect. (c) 2015 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry

Factors affecting a dissipation of plasticizers during the gelatination

In this study has been watched the influence of the type of polymer and plasticizer on viscosity of PVC plastisols for coating. We have given attention to a migration of plasticizer through gelatination and after completed gelatination. It has been shown, that the type of used plasticizer and used polymer can influence the processing properties of plastisols, while type of used plasticizer has principal signification from standpoint of migration of plasticizer

Food prices, taxes, and obesity in Canada and its implications for food taxation

An important health financing issue facing Canada and other OECD countries (OECD, 2017) are the health consequences of obesity. Statistics Canada (2014) reports that 51.6% of adult Canadians were overweight or obese in 2009 compared to 53.6% in 2013. The proportion of Canadians who are overweight differs by sex, with 59.2% of Canadian males overweight in 2009 compared to 62% in 2013 and 43.9% of females overweight in 2009 compared to 45.1% in 2013. These increases have led to calls for policies to control obesity (see Clark et al., 2014). These rates of obesity are based on the body mass index (BMI) which is the ratio of weight (in kilograms) to the square of height (in meters). Cranfield (2007) uses the Canadian Community Heath Survey (CCHS) to examine the determinants of the body mass index (BMI) of Canadians