Mercury (Hg) in autumn litterfall from predominately deciduous forests was measured in 3 years of samples from 23 Mercury Deposition Network sites in 15 states across the eastern USA. Annual litterfall Hg dry deposition was significantly higher (median 12.3 micrograms per square meter (μg/m(2)), range 3.5-23.4 μg/m(2)) than annual Hg wet deposition (median 9.6 μg/m(2), range 4.4-19.7 μg/m(2)). ...

Introduction: Tympanoplasty is the standard and well established procedure for closure of tympanic membrane perforations .This paper compares the results of tympanoplasty in terms of hearing improvement and graft incorporation in patients with chronic perforation of the tympanic membrane between two groups with and without active drainage at the time of surgery.  Materials and Methods: Sixty re...

This study was conducted in perennial alfalfa farm infected by weeds located at Km 7 Hamadan-Tehran road in the spring of 2014 and 2015 in a randomized complete block design with 11 treatments and 4 replications compared with control to investigate the effects of different harvest times of first cutting on the increase or decrease in percentage of dry weight of weeds and also alfalfa in second ...

Grassland mixtures hold the potential for increasing biomass and productivity. In a field experiment, monocultures of eight white clover (Trifolium repens L.) genotypes perennial ryegrass (Lolium perenne were analyzed over three years (2015, 2016, 2018) their species-specific aboveground belowground biomass. Roots by Fourier transform infrared (FTIR) spectroscopy to identify root mass, vertical...

PURPOSE To determine the concentration of coenzyme Q10 (CoQ10) in the human retina. METHODS Eye tissues were lyophilized and exhaustively extracted with heptane. The extracts were analyzed for CoQ10 by high-performance liquid chromatography (HPLC). RESULTS The average concentration of CoQ10 in the retina was 42+/-11 nanomoles/g dry retina for donors younger than 30 years of age and 24+/-13 ...

OBJECTIVE To determine the prevalence of dry eye symptoms and signs in children with juvenile idiopathic arthritis (JIA). PATIENTS AND METHODS A total of 192 children with JIA: 48 oligo-, 39 extended oligo-, 79 polyarthritis, and 26 with other types of arthritis (eight juvenile spondyloarthritis, five juvenile psoriatic arthritis, three mixed connective tissue diseases, two systemic onset art...