Incorporation of hydroxypyridinone ligands into self-assembled monolayers on mesoporous supports for selective actinide sequestration

In this study, three isomers of hydroxypyridinones (1,2-HOPO, 3,2-HOPO, and 3,4-HOPO) were attached to self-assembled monolayers on mesoporous silica (SAMMS). The HOPO-SAMMS materials have superior solid adsorbents properties: they do not suffer from solvent swelling; their rigid, open pore structure allows rapid sorption kinetics; their extremely high surface area enables the installation of high functional density; and being silica-based, they are compatible with vitrification into a final vitreous waste form. Kinetics, equilibrium, and selectivity of the adsorptions of actinide on the HOPO-SAMMS at various pH values and in the presence of other metal cations, anions, and competing ligands are reported. Rapid sequestration of U(VI), Np(V), and Pu(IV) was observed. Very little competition from transition metal cations and common species was observed.     

Parameters for the evaluation of the thermal damage and nutraceutical potential of lupin-based ingredients and food products

Foods based on sweet lupin proteins are gaining attention from industry and consumers because of their possible role in the prevention of cardiovascular disease. When promoting lupin-based foods for inclusion in a daily diet, the thermal damage suffered during processing is of relevance to the bioactive and nutritional quality of the food product. N-(2-furoylmethyl)-L-lysine (furosine) quantification demonstrates that currently available sweet lupin protein isolates have a thermal damage comparable to or lower than other traditional food ingredients, and are a good source of lysine in non-dairy products. In lupin-based foods claiming to have cholesterol-lowering potential, shotgun proteomics offers itself as a fast and effective screening method for assessing the biological availability of active peptides. Such a method is readily applicable to other legume-enriched food products.     

Bioaccumulation of dioxin-like substances and selected brominated flame retardant congeners in the fat and livers of black pigs farmed within the Nebrodi Regional Park of Sicily

An observational study was designed to assess the bioaccumulation of polychlorodibenzodioxins (PCDD) and polychlorodibenzofurans (PCDF), dioxin-like polychlorobiphenyls (DL-PCB), and 13 selected polybromodiphenylethers (PBDE) in autochthonous pigs reared in the Nebrodi Park of Sicily (Italy). Perirenal fat and liver samples were drawn from animals representative of three different outdoor farming systems and from wild pigs and then analyzed for the chemicals mentioned previously. The highest concentrations of PCDD + PCDF and DL-PCB were detected in the fat (0.45 and 0.35 pg World Health Organization toxicity equivalents [WHO-TE] per g of fat base [FB], respectively) and livers (12.7 and 3.28 pg WHO-TE per g FB) of the wild group, whereas the free-ranging group showed the lowest levels (0.05 and 0.03 pg WHO-TE per g FB in fat and 0.78 and 0.27 pg WHO-TE per g FB in livers). The sum of PBDE congeners was highest in wild pigs (0.52 ng/g FB in fat and 5.64 ng/g FB in livers) and lowest in the farmed group (0.14 ng/g FB in fat and 0.28 ng/g FB in livers). The contamination levels in fat and livers of outdoor pigs had mean concentration values lower than those levels reported for intensively indoor-farmed animals. In wild pigs, bioaccumulation was associated with their free grazing in areas characterized by bush fires. The results of this study aid to emphasize the quality of the environment as a factor to guarantee food safety in typical processed pig meat products, specifically from outdoor and extensive Nebrodi farming systems.     

Effect of race on peer ratings in an industrial situation.

Examined the effect of race on the peer ratings of 43 black and 50 white industrial employees recently exposed to a foreman-training program which included intensive human relations training. Contrary to previous studies, no race effect was found. In addition, almost all the requirements for convergent and discriminant validity between the races were met. Possible explanations for these results and implications for the use of peer ratings in integrated settings are discussed. (15 ref.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The action of sulfur trioxide on chalcopyrite

Chalcopyrite reacts readily with SO₃ at about 100°C to form water-soluble sulfates; the reaction is approximately: 3CuFeS₂+26SO₃→3CuSO₄+FeSO₄+Fe₂(SO₄)₃+25SO₂ The presence of about 4 pct O₂ in the gas phase greatly accelerates the reaction presumably due to the complete transformation of ferrous into ferric sulfate in an extremely porous form: 2CuFeS₂+17SO₃+1/2O₂→2CuSO₄+Fe₂(SO₄)₃+16SO₂ A stoichiometric mixture of SO₂+1/2O₂ behaves towards chalcopyrite in nearly the same way as SO₃ although only in the temperature range 350° to 700°C.     

Effects of anxiety arousal on the consumption of alcohol by alcoholics and social drinkers.

Tested the hypothesis that the arousal of anxiety would lead to an increase in the alcoholic's consumption of alcohol. 20 male nonabstinent alcoholics and 20 male social drinkers were engaged in an alcohol taste rating task. High and low levels of state anxiety were induced by threatening Ss with either a painful or a nonpainful electric shock. Levels of trait anxiety were also assessed using the Neuroticism scale of the Eysenck Personality Inventory. Alcoholics consumed significantly more alcohol than social drinkers in the tasting task, but the amounts consumed by both groups were unrelated either to the anxiety manipulation factor or trait anxiety scores. Results are discussed in terms of their implications for anxiety-reduction models of alcoholism. (22 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Decoupling climate-policy objectives and mechanisms to reduce fragmentation

ABSTRACT

The efficacy of climate-change mitigation policy within the building sector is examined in terms of how fragmentation can limit the extent of mitigation actions that can be achieved in a timely manner. The policy and regulatory context for the building industry is examined in relation to the policy context for solutions and recommendations that will work for all parties. Based on this analysis, two substantive recommendations are made for improved policy design. Firstly, a decoupling of policy objectives and policy mechanisms is needed so that the policy-taking stakeholders (in design, development and construction) can reduce energy use in buildings more effectively. Secondly, policy-taking stakeholders need an explicit and diverse system in order to advocate for policy objectives. The major aspect of this work is the development of a new conceptual framework that ties together these recommendations into a continuous process of policy-making and policy-taking. This framework demonstrates an idealized system that operates simultaneously top down and bottom up, and the development of policy objectives is influenced by stakeholders of all kinds to further the goals of an energy-efficient, low-carbon built environment.