Based on minimum risk level criteria formulated by ATSDR, the consumption of PCB contaminated fish from the Itimbiri river poses a potential risk for humans. The POP levels in biota were not significantly related to the POP levels in sediments, and the BSAF concept (Biota-Sediment Accumulation Factor) was found to be a poor predictor of the bioavailability and bioaccumulation of environmental pollutants in the present study. With increasing trophic levels, a significant Mizoribine order increase in PCB 95, 101, 110, 138, 146, 149, 153, 174, 180 & 187 and p,p’-DDT in Itimbiri and BDE 47 & 99 in Itimbiri, Aruwimi
& Lomami river basins was observed. Trophic magnification factors were higher than 1, indicating that biomagnification occurs through the tropical food web. (C) 2013 Elsevier Ltd. All rights reserved.”
“Phase transitions have been investigated for polycrystalline samples of Er1-xLuxFe2O4 (0 <= x <= Selleckchem Metabolism inhibitor 0.6). The magnetization measurements
for ErFe2O4 showed two-step phase transitions at about 220 and 250 K. The transition at 250 K is an antiferromagnetic transition and that at 220 K is a structural transition. However, two phase transitions do not occur for 0.2 <= x <= 0.6, but a thermoremanent magnetization is observed below 220 K. This indicates that there is no second phase transition for 0.2 <= x <= 0.6. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3061724]“
“Background: A subset of patients with heart failure (HF) and preserved left ventricular ejection fraction (EF) previously had EF <40%. We postulated that such “”recovered”" EF patients would be prevalent in a referral HF population and clinically distinct from those with persistently preserved or reduced EF.
Methods and Results: We identified all subjects with a clinical diagnosis of HF seen in the advanced heart disease practice at our center from March to October 2008.
Patients were classified into 1 of 3 groups based on retrospective review of the medical record: EF persistently >= 40% (HF-PEF), EF recovered to >= 40% (HF-REF) and low EF, <40% (HF-LEF). Clinical and echocardiographic characteristics were CA-4948 compared across groups using standard chi-square and analysis of variance tests. A total of 358 heart failure patients were identified, including 56 with HF-PEF, 121 with HF-REF, and 181 with HF-LEF. Compared with HF-PEF, HF-REF patients were younger with less atrial fibrillation, hypertension, and diabetes. Also, they tended to have lower systolic blood pressure, better renal function, and larger left ventricular diameter at end diastole. HF-REF patients were more similar to HF-LEF, but were younger and had lower rates of coronary artery disease. Of the 3 groups, HF-REF patients had the mildest reported HF symptoms and fewest previous HF hospitalizations.