نتایج جستجو برای: platanus acerifolia

تعداد نتایج: 394  

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...

2016
Michaël Sicard Rebeca Izquierdo Marta Alarcón Jordina Belmonte Adolfo Comerón José Maria Baldasano

We present for the first time continuous hourly measurements of pollen near-surface concentration and lidarderived profiles of particle backscatter coefficients and of volume and particle depolarization ratios during a 5-day pollination event observed in Barcelona, Spain, between 27 and 31 March 2015. Daily average concentrations ranged from 1082 to 2830 pollen m−3. Platanus and Pinus pollen ty...

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...

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: :Open Access Journal of Mycology & Mycological Sciences 2019

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