نتایج جستجو برای: erysiphe platani on platanus orientalis

تعداد نتایج: 8411822  

ژورنال: :فیزیولوژی محیطی گیاهی 0
سیده مهدخت مداح گروه زیست شناسی، دانشکده علوم پایه ،دانشگاه آزاد اسلامی واحد یادگار امام خمینی (ره) شهرری، تهران ، ایران

درخت چنار یکی از درختان مهم در فضای سبز شهر تهران است که در سال های اخیر تحت تاثیر آلودگی شدید هوای تهران دچار خزان زود هنگام شده است. در پژوهش حاضر به منظور مشخص شدن علت این پدیده صفاتی نظیر سطح برگ وزن خشک، هدایت روزنه، مقاومت روزنه، رطوبت نسبی برگ، غلظت نسبی کلروفیل، مقادیر عناصر کلسیم، منیزیوم، سرب و کادمیوم مورد سنجش قرار گرفت. برگ درختان چنار در اواخر بهار از سه منطقه شهر تهران با مقادیر ...

Journal: :reports of biochemistry and molecular biology 0
mojtaba sankian immunology research center, mashhad university of medical sciences, mashhad, iran fatemeh vahedi razi vaccine & serum research institute, mashhad, iran nazanin pazouki immunology research center, mashhad university of medical sciences, mashhad, iran malihe moghadam immunology research center, mashhad university of medical sciences, mashhad, iran farahzad jabbari azad allergy research center, mashhad university of medical sciences, mashhad, iran abdol-reza varasteh tel: +98 511-711 24 10; fax: + 98 511- 711 26 16

background: allergy is a clinical disorder affecting the human population with wide geographical distribution. platanus orientalis (p. orientalis) trees are planted in many countries and their pollen causes allergic reactions. cyclophilin has recently been identified as one of the most important allergens of p. orientalis pollen. we aimed to clone and purify this allergen in escherichia coli fo...

Journal: :International Journal of Environment, Agriculture and Biotechnology 2017

2010
S. A. A. Korori

Tehran, one of the heavily-populated capitals, is severely suffering from increasing air pollution. To show a documented trend of such pollutants during last years, plane tree species (Platanus orientalis) were suited to be studied as indicators, for the species have been planted throughout the city many years ago. Two areas (Saadatabad and Narmak districts) allotting different contents of crow...

Journal: :International journal of environment and geoinformatics 2021

In this study, activated carbon was produced from platanus orientalis leaves and the adsorption of methylene blue onto investigated. Facile chemical activation route conducted for process lignocellulosic leaves. ZnCl2 used as activating agent with different ratios. Morphological, structural characteristics samples were determined by using optical microscopy, Fourier transform infrared spectrosc...

Journal: :محیط زیست طبیعی 0
سارا تیموری دکتری جنگلداری دانشکدۀ منابع طبیعی، دانشگاه تهران مجید مخدوم فرخنده استاد گروه جنگلداری دانشکدۀ منابع طبیعی، دانشگاه تهران جهانگیر فقهی دانشیار گروه جنگلداری دانشکدۀ منابع طبیعی، دانشگاه تهران نادیا عباس زاده تهرانی استادیار پژوهشگاه فضایی، سازمان فضایی ایران

due to the different factors and complexity of their effects on healthy and sustainability of urban forest, this study has been tried by means of determining effective factors in ecosystem, and dividing sorkhe hesar man made forest park to homogeneous units according to natural factors (slope, aspect, high, soil depth, mixture and pure planting system) and human factors (amount of irrigation an...

ژورنال: سلامت و محیط زیست 2019

Background and Objective: Today, the presence and increase of particulate matter is one of the serious factors that threaten human health. In the meantime, trees can accumulate airborne particles by their foliage. In this study, the accumulating ability of various PM by the leaf of some tree and shrub species was evaluated in Isfahan. Materials and Methods: 12 species of trees and shrubs were ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید