نتایج جستجو برای: pm25 concentration
تعداد نتایج: 381048 فیلتر نتایج به سال:
acanthophyllum laxiusculum is one of the most widely distributed species of the genus in iran that flourishes in steppe and mountainous regions of the country. in the present study, water-soluble content of a. laxiusculum roots was extracted by boiling water and further successively purified partially by a defined solvent system. surface tension measurements revealed the ability of plant extrac...
background and objectives: resistance towards reveling antibiotics has captured great interest in evaluating the antimicrobial properties of the natural plants. taraxacum mongolicum is widely used as a folklore medicinal plant for its diuretic, antirheumatic and anti-inflammatory properties. though there are some reports on antimicrobial properties of taraxacum mongolicum, studies on antibacter...
various concentrations of copper are embedded into silica matrix to xerogel form using copper source - cu(no3)2∙3h2o. the xerogel samples are prepared by hydrolysis and condensation of tetraethyl orthosilicate (teos) by the sol-gel method and with determination of new molar ratio of components h2o/teos to be 6.2. in this investigation, the necessary amount of trihydrated copper nitrate is adde...
a laboratory experiment was conducted to determine the allelopathic effect of residues aqueous extract of two ecotype of swallowwort(cynanchum acutum l.) on germination traits of wheat (triticum aestivum l.). a factorial experiment based on a completely randomized design with four replications was conducted at islamic azad university of karaj in 2012. factors were two swallowwort ecotype (ghazv...
objectives we assessed functional vitamin b12 deficiency in tehranian elderly admitted to elderly research center, university of social welfare and rehabilitation sciences. conclusions the prevalence of b12 deficiency was higher in this study compared to other studies, so more attention and massive efficacious policy should be designed to reduce the deficiency of this vitamin. results cut-off o...
the main sources of human exposure to trace metals for non-occupationally exposed individualsare inhalation and ingestion. because the absorption rates of the metals by inhalation are significantly higher (up to 50-60%) than those by ingestion (between 3% and 10%), determination of trace metals in ambient air samples is of special interest. the main purpose of this study was to determine fe, zn...
in the present study, a field study was performed on some herbaceous plants growing in thesoutheast of ahvaz, where some metal producing industries are active. the aim of this studywas to investigate and compare manganese (mn) and zinc (zn) accumulation in seven dominantherbaceous plants in this area. plant samples were collected randomly. associated soils weresampled from the same sites next t...
Objective. To study the procalcitonin concentration (PCC) in oral fluid of healthy persons and patients with periodontitis.
 Materials methods. The was studied cavity 42 periodontitis (main group) 25 sanitized (comparison group).
 Results. result medians comparison group by 1.658 times exceeded median main (р = 0,004315) made up for 114 (64; 144) pg/ml 189 (117; 485) pg/ml. No differe...
Mind can be considered as a process that regulates the flow of sensory inputs and information, much of it largely unobserved. Mindful self-awareness is a disciplined means of directing attention to the thoughts, affect, intentions, and physiologic shifts that occur moment to moment. These, along with the perception of signals observed from another person, shape behavior in an ongoing interactio...
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