Objective: The aim of our study was to analyze the potential association between coffee drinking in middle age and cognitive performance in old age in a large sample of Finnish twins.
Design: Coffee consumption and other baseline variables of 2606 middle-aged Finnish twins were assessed in 1975 and 1981 by postal questionnaires. After the median follow-up of 28 y, their cognitive status was measured by using a validated telephone interview questionnaire.
Results: Coffee consumption was high and associated with educational
level and several other baseline variables. After adjustment for these variables, linear regression analysis showed that coffee consumption was not an independent predictor of cognitive performance in old age (beta = -0.12 test score units per coffee cup; 95% CI: -0.27, 0.04). No consistent differences in coffee consumption and cognitive score were observed within discordant twin pairs. Also, coffee drinking did not affect the risk of selleck chemical PF-562271 manufacturer mild cognitive impairment or dementia.
Conclusions: Coffee drinking is associated with many sociodemographic and health
variables, but our results do not support an independent role of coffee in the pathogenesis of cognitive decline and dementia. Am J Clin Nutr 2009;90:640-6.”
“A bioflocculant, quaternized carboxymethyl chitosan (QCMC), was developed by the quaternization of N,O-carboxymethyl chitosan (N,O-CMC) and characterized by FUR, (1)H-NMR, GPC, and potentiometry. The efficiency of the removal of chemical oxygen demand (COD) in printing wastewater by this
flocculant was further reported. Results indicated that the capacity of QCMC to remove the COD from tested wastewater was the best one among the investigated flocculants. The pH had great influence on this capacity and the suitable pH for QCMC to treat the tested wastewater was about 5.0. The utilization of aid-flocculant, www.sellecn.cn/products/brigatinib-ap26113.html especially bentonite, could improve this capacity obviously, and the increase of mass ratio of bentonite to QCMC resulted in the increase of the capacities of complex flocculant to remove the COD from the tested wastewater. When the mass ratio of bentonite to QCMC was 40, pH of wastewater was 5.0 and amount of complex flocculant in the wastewater was from 2500 to 3142 mg L(-1), the removal ratio of COD was more than 80%. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 118: 299-305, 2010″
“The work is devoted to the theory of meltblown polymer jets. Polymer jets are experiencing strong stretching and flapping being subjected to the pulling action of a high speed surrounding axisymmetric gas jet. The bending perturbations of polymer melt jets are triggered by the surrounding turbulent eddies and enhanced by the distributed lift force acting on the jets. We study first growth of small perturbations in the framework of the linear stability theory. Then, the fully nonlinear case of large-amplitude planar bending perturbations of polymer jet is solved numerically.