نتایج جستجو برای: آلاینده pm

تعداد نتایج: 41399  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه - دانشکده اقتصاد 1393

در این تحقیق به مطالعه روابط موجود بین استراتژی سرمایه در گردش، عملکرد مالی و نرخ رشد شرکت در شرکت های پذیرفته شده در بورس اوراق بهادار تهران پرداخته ایم. همینطور به دنبال بررسی این موضوع هستیم که، اتخاذ کدامیک از استراتژی های سرمایه در گردش (جسورانه، محافظه کارانه و استراتژی های میانه رو) موجب بهبود در عملکرد مالی می شود. برای تبیین استراتژی سرمایه در گردش از نسبت های نقدینگی (lr) و برای بررسی...

A. Ronaghi J. Yasrebi M. Zarei R. Ghasemi-Fasaei R. Kazemi

Direct use of poultry manure (PM) as an organic fertilizer in agriculture may cause environmental concerns; therefore, application of its biochar might be an effective solution. A greenhouse experiment was conducted to investigate the influence of PM and its biochar (PMB) (control, 1% and 2% PM (w/w), 1% and 2% (W/W) PMB) on the growth and micronutrients concentration of corn under salinity str...

2007
Michelle L. Bell Jee Young Kim Francesca Dominici

BACKGROUND A critical question regarding the association between short-term exposure to ozone and mortality is the extent to which this relationship is confounded by ambient exposure to particles. OBJECTIVES We investigated whether particulate matter < 10 and < 2.5 microm in aerodynamic diameter (PM(10) and PM(2.5)) is a confounder of the ozone and mortality association using data for 98 U.S....

Mohammad Aziz Dollah Saadat Parhizkar, Suriani Binti Zulkifli

Objective(s):This study was designed to investigate the effect of Phaleria macrocarpa aqueous extract (PM) on spermatogenesis by observing the histological changes of testes in adult male rats. Materials and Methods: PM was prepared by boiling the dried slices of P. macrocarpa fruits followed by filtering, centrifugation and freeze-drying to obtain the powder form. Eighteen Sprague Dawley adult...

Journal: :Environmental Health Perspectives 2005
Susanne Becker Lisa A. Dailey Joleen M. Soukup Steven C. Grambow Robert B. Devlin Yuh-Chin T. Huang

Health effects associated with particulate matter (PM) show seasonal variations. We hypothesized that these heterogeneous effects may be attributed partly to the differences in the elemental composition of PM. Normal human bronchial epithelial (NHBE) cells and alveolar macrophages (AMs) were exposed to equal mass of coarse [PM with aerodynamic diameter of 2.5-10 microm (PM(2.5-10)], fine (PM(2....

Journal: :arya atherosclerosis 0
mshahnaz shahrokhi sedighe asgari alireza khosravi gholam-ali naderi mahin taheri

abstract  introduction: smoking is an important risk factor of coronary artery disease. nicotine replacement therapy (nrt) for smoking cessation should be considered, especially in coronary patients. methods: twenty-four healthy smokers, smoking an average of 20 cigarettes a day for 15 years and with moderate cigarette dependence (according to the fagershtrum questionnaire score) were randomly ...

Journal: :مجله علوم اعصاب شفای خاتم 0
sajad sahab negah a. department of neuroscience, mashhad university of medical sciences, mashhad, iran b. shefa neuroscience research center, khatam alanbia hospital, tehran, iran ali jahanbazi jahan-abad a. shefa neuroscience research center, khatam alanbia hospital, tehran, iran b. department of clinical biochemistry, shahid beheshti university of medical sciences, tehran, iran ali gorji a. department of neuroscience, mashhad university of medical sciences, mashhad, iran b. shefa neuroscience research center, khatam alanbia hospital, tehran, iran c. epilepsy research center, department of neurology, and department of neurosurgery, westfälische wilhelms-universität münster, münster, germany

traumatic brain injury (tbi) is described by a disruption in the normal function of the brain due to an injury following a trauma, which can potentially cause severe physical, cognitive, and emotional impairment. the use of human stem cells and self-assembling peptide scaffolds suggest huge potential for application in the treatment of tbi. in the present study, we surveyed the beneficial effec...

Journal: :Neuropsychologia 2012
Daniela Czernochowski Sebastian Horn Ute J Bayen

Behavioral and event-related potential (ERP) correlates of monitoring in an event-based prospective memory (PM) task were compared during blocks with rare versus frequent PM target presentations relative to an ongoing-task only condition. For both rare and frequent PM conditions, behavioral interference costs in terms of longer reaction times (RTs) were observed. Likewise, during both PM blocks...

2015
Hyunok Choi Steven Melly John Spengler Paul B. Tchounwou

In spite of a dramatic decrease in anthropogenic emissions, ambient concentrations of major pollutants have not changed within many urban locations. To clarify the relationship between ambient air quality trend and the population exposures, we compared the intraurban versus temporal variability of the collocated measurements of five major air pollutants including particulate matter (PM) with an...

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