22 research outputs found
Acute Infections and Environmental Exposure to Organochlorines in Inuit Infants from Nunavik
The Inuit population of Nunavik (Canada) is exposed to immunotoxic organochlorines (OCs) mainly through the consumption of fish and marine mammal fat. We investigated the effect of perinatal exposure to polychlorinated biphenyls (PCBs) and dichlorodiphenyldichloroethylene (DDE) on the incidence of acute infections in Inuit infants. We reviewed the medical charts of a cohort of 199 Inuit infants during the first 12 months of life and evaluated the incidence rates of upper and lower respiratory tract infections (URTI and LRTIs, respectively), otitis media, and gastrointestinal (GI) infections. Maternal plasma during delivery and infant plasma at 7 months of age were sampled and assayed for PCBs and DDE. Compared to rates for infants in the first quartile of exposure to PCBs (least exposed), adjusted rate ratios for infants in higher quartiles ranged between 1.09 and 1.32 for URTIs, 0.99 and 1.39 for otitis, 1.52 and 1.89 for GI infections, and 1.16 and 1.68 for LRTIs during the first 6 months of follow-up. For all infections combined, the rate ratios ranged from 1.17 to 1.27. The effect size was similar for DDE exposure but was lower for the full 12-month follow-up. Globally, most rate ratios were > 1.0, but few were statistically significant (p < 0.05). No association was found when postnatal exposure was considered. These results show a possible association between prenatal exposure to OCs and acute infections early in life in this Inuit population
Lifting options for stratospheric aerosol geoengineering: advantages of tethered balloon systems
Oxygen plasma to improve wetting of aqueous latex inks on low surface energy elastomeric surfaces
Described herein is a transfer member for use in aqueous ink jet printer. The transfer member includes an elastomeric material. The surface layer of the transfer member has been subjected to an energy treatment selected from the group including corona discharge, oxygen plasma discharge and electron beam discharge such that the surface layer possesses an aqueous ink contact angle of from about 25° to about 40°. The transfer member has a Shore A durometer of from about 20 to about 70. The ink jet printer is also described