نتایج جستجو برای: air samples

تعداد نتایج: 615845  

احرامپوش, محمد حسن, جعفری, وحید, نبی زاده, رامین, ندافی, کاظم, یونسیان, مسعود,

Introduction: Air pollution is one of the problems of the recent century caused by vehicles, industries and other urban activities. The City of Yazd faces air pollution due to its high population, vehicular traffic and industrial places around the city. One of the important parameters of air pollution is suspended air particles that have harmful effects on the health of people, plants and objec...

Journal: :international journal of agricultural science and research 2012
p. farzaneh h. fatemian e. hosseini gh. h. asadi f. darvish

in this study, the effect of edible coat (carboxy methyl cellulose) before osmotic dehydration anddifferent drying methods on sensory and physical properties of dried apple (v. golden delicious)rings was investigated. the coated and non-coated samples pretreated with 50% sucrose osmoticsolution and dried in freeze drier (-40 to -50°c, 0.026-0.017 mbar, 24 hr), vacuum drier (70°c, 200mbar, 8-10 ...

Journal: :Applied and environmental microbiology 2012
Jochen Schulz Anika Friese Sylvia Klees Bernd A Tenhagen Alexandra Fetsch Uwe Rösler Jörg Hartung

During 1 year, samples were taken on 4 days, one sample in each season, from pigs, the floor, and the air inside pig barns and from the ambient air and soil at different distances outside six commercial livestock-associated methicillin-resistant Staphylococcus aureus (LA-MRSA)-positive pig barns in the north and east of Germany. LA-MRSA was isolated from animals, floor, and air samples in the b...

Journal: :Environmental pollution 2008
Samuel Melaku Vernon Morris Dharmaraj Raghavan Charles Hosten

Atmospheric samples of precipitation and ambient air were collected at a single site in Washington, DC, for 7 months (for ambient air samples) and 1 year (for wet deposition samples) and analyzed for arsenic, cadmium, chromium and lead. The ranges of heavy metal concentrations for 6-day wet deposition samples collected over the 1-year period were 0.20-1.3 microg/l, 0.060-5.1 microg/l, 0.062-4.6...

Journal: :Indoor air 2013
E Kettleson S Kumar T Reponen S Vesper D Méheust S A Grinshpun A Adhikari

Respiratory illnesses have been linked to children's exposures to water-damaged homes. Therefore, understanding the microbiome in water-damaged homes is critical to preventing these illnesses. Few studies have quantified bacterial contamination, especially specific species, in water-damaged homes. We collected air and dust samples in twenty-one low-mold homes and twenty-one high-mold homes. The...

Journal: :Clinical chemistry 1988
M H Barreto-Lins F A Campos M C Azevedo H Flores

We examined the stability of retinol in blood and serum samples, kept in the dark, under different handling procedures. Samples not protected from contact with air oxygen were highly unstable, even when kept at ice temperature. Samples collected under anaerobic conditions, with Vacutainer Tubes, or treated with nitrogen after collection to displace the air from the tubes were stable during the ...

Journal: :iranian journal of radiation research 0
f. arkian national radiation protection department, atomic energy organization of iran, tehran, iran m. salahinejad nuclear research center, tehran, iran j. amidi national radiation protection department, atomic energy organization of iran, tehran, iran

background: measurement of gross , gross activities, and cosmogenic beryllium-7 (7be) concentrations were made both daily and weekly during the years 2001- 2004 from samples of atmospheric aerosols filtered from the air at tehran nuclear research center (35 41' n) and zahedan (28 29' n). materials and methods: weekly aerosol samples were collected with the high-volume air samplers on ...

Journal: :پژوهش های علوم و صنایع غذایی ایران 0
h. afshari jooybari a. farahnaky m. majzoobi gh. mesbahi m. niakousari

mazafati date is a wet and semi-dried date fruit type with dark red to black color that has premier quality. because of its high moisture content, date fruits of this variety are very perishable at room temperature and therefore must be refrigerated during storage. in this study, effect of air temperature (50, 60, 70, 80 and 90 ˚c) and air flow rate (1, 1.5 and 2 m/s) in hot air drying of mazaf...

محمدیان, محمود ,

ABSTRACT Cotton dust is one of the chemical agents that cause air pollution in textile workshops. An investigation was done to measure cotton dust concentration in Mazandaran Province. 37 samples were collected by personal samplers devices and whatman filter papers of worker's inhalation zone of ambient air that contained total dust. 40 samples were collected by whatman filter papers and ho...

2012
Céline Damiani Firas Choukri Solène Le Gal Jean Menotti Claudine Sarfati Gilles Nevez Francis Derouin Anne Totet

To the Editor: Diversity of genotypes among Pneumocystis jirovecii (human-specifi c Pneumo-cystis species) isolates mainly involves internal transcribed spacer (ITS) loci (1). Type Eg, one of the most frequently detected ITS genotypes, has been found worldwide (2). The locus of dihydropteroate synthase (DHPS) is also of interest because DHPS is the target of sulfonamides, the main drugs used to...

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