نتایج جستجو برای: carex

تعداد نتایج: 967  

ژورنال: :مجله گیاهشناسی ایران 2002
فاطمه زرین کمر عادل جلیلی بهنام حمزه یونس عصری جی هودگسون

ساختار تشریحی برگ در 7 گونه از جنس carex (تیره جگن) از منطقه حفاظت شده ارسباران مطالعه شد. صفات جالبی از ساختمان آناتومی برگ شامل ویژگی سلولهای اپیدرم، اندیس روزنه و مشخصات بافتهای مختلف در برش عرضی بررسی و تحلیل شد. این مطالعه اطلاعات جامعی از آناتومی برگ در این جنس ارائه می دهد. علاوه بر آن، این بررسی گویای توانایی سازگاری جنس (carex) با محیط طبیعی مرطوب و تالابی خود می باشد. از جمله نکات ج...

Journal: :Journal of Experimental Botany 2009
Florence Baptist Guillaume Tcherkez Serge Aubert Jean-Yves Pontailler Philippe Choler Salvador Nogués

Intense efforts are currently devoted to disentangling the relationships between plant carbon (C) allocation patterns and soil nitrogen (N) availability because of their consequences for growth and more generally for C sequestration. In cold ecosystems, only a few studies have addressed whole-plant C and/or N allocation along natural elevational or topographical gradients. (12)C/(13)C and (14)N...

Journal: :International journal of occupational and environmental health 2005
Dario Mirabelli Timo Kauppinen

To update estimates of the prevalence of occupational exposures to carcinogens in Italy, the 85 CAREX agents were re-assessed. The original exposure estimates in the CAREX database were updated, taking into account changes in exposure patterns and in numbers of employees by industrial class. The 21.8 million employees in Italy, 19.4 in industry and services, 2.4 in agriculture, had 4.2 million ...

2017
Ingibjörg S. Jónsdóttir Magnus Augner Torbjörn Fagerström Helena Persson Anna Stenström

Journal: :Canadian bulletin of medical history = Bulletin canadien d'histoire de la medecine 2000
J Duffin P Potter

On 24 October 1950, fourteen people met at the invitation of the abbé Arthur Maheux in the Institut d’Histoire et de Géographie, of the Université Laval in Quebec City to form the Société canadienne d’histoire de la médecine (SCHM). Among them were physicians, historians, and archivists. Dr. Sylvio Leblond (1901-1990), internist and instructor of medical history at Laval, was elected president ...

Journal: :Bulletin de la Société Botanique de France 1926

2017
E Pernilla Brinkman Ciska E Raaijmakers Wietse de Boer Wim H van der Putten

It is increasingly acknowledged that soil biota may influence interactions among plant species; however, little is known about how to change historical influences of previous land management on soil biota, the so-called 'biotic soil legacy effect'. We used a two-phase plant community-soil feedback approach to study how plant species typical to original (i.e. undisturbed) and degraded fen meadow...

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