X-ray, ac, and dc magnetization and ferromagnetic resonance experiments were carried out on powder and dispersed NiO systems.
Our results show that dispersed and concentrated samples exhibit following two different magnetic behaviors: (i) a high temperature peak related to the blocking of the https://www.selleckchem.com/products/CAL-101.html particle core and (ii) a low temperature maximum likely related to the freezing of the frustrated spins on surface particle. Besides, we have observed that the low temperature maximum is not field-dependent and depend strongly on the distance among particles. This result can be understood taking account the decreasing of the dipolar interaction to more dispersed samples. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3459890]“
“Background:
Evidence of an association between fish and meat consumption and risk of dementia is inconsistent and nonexistent in populations in developing countries.
Objective: The objective was to investigate associations between fish and meat consumption with dementia in low-and middle-income countries.
Design: One-phase cross-sectional surveys were conducted in all residents aged >= 65 y in 11 catchment areas in China, India, Cuba, the BLZ945 purchase Dominican Republic, Venezuela, Mexico, and Peru. A total of 14,960 residents were assessed by using the 10/66 standardized protocol, which includes face-to-face interviews for dietary habits and a cross-culturally validated dementia diagnosis.
Results: Dietary intakes and the prevalence of dementia varied between sites. We combined site-specific Poisson regression prevalence ratios PRs) for the association between fish and meat
consumption and dementia in 2 fixed-effect model meta-analyses adjusted for sociodemographic and health characteristics and fish and meat consumption as appropriate. We found a dose-dependent inverse association between check details fish consumption and dementia PR: 0.81; 95% CI: 0.72, 0.91) that was consistent across all sites except India and a less-consistent, dose-dependent, direct association between meat consumption and prevalence of dementia PR: 1.19; 95% CI: 1.07, 1.31).
Conclusions: Our results extend findings on the associations of fish and meat consumption with dementia risk to populations in low-and middle-income countries and are consistent with mechanistic data on the neuroprotective actions of omega-3 (n-3) long-chain polyunsaturated fatty acids commonly found in fish. The inverse association between fish and prevalent dementia is unlikely to result from poorer dietary habits among demented individuals reverse causality) because meat consumption was higher in those with a diagnosis of dementia. Am J Clin Nutr 2009;90:392-400.”
“Background: It is widely accepted that local anesthetics with epinephrine should not be used in areas served by terminal vessels.