نتایج جستجو برای: reproduction physiology

تعداد نتایج: 153431  

Journal: :Entomologia Experimentalis Et Applicata 2023

As descendants of social cockroaches, termites have an intriguing biology that makes them highly suitable study subjects in a wide variety fields, such as eusocial evolution, ageing mechanisms, wood decomposition, ecosystem engineering, and pest management. This special section presents four studies ranging from the role chemical compounds foraging behaviour food digestion to genetics physiolog...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده علوم 1389

ارسنیک از فراوان ترین و بالقوه ترین عناصر سرطان زا است . سدیم ارسنیت قادر است با القای استرس اکسیداتیو ناهنجاریهای تولید مثلی در جنس نر بوجود آورد. ویتامین e آنتی اکسیدانت اصلی در سیستم دفاعی آنتی اکسیدانت سلول می باشد و اصلی ترین نقش زیستی آن حفاظت از اسیدهای چرب غیر اشباع چندگانه (polyunsaturated fatty acids pufas) و دیگر ترکیبات غشای سلول و لیپوپروتیین های کم چگال در برابر اکسیداسیون توسط را...

ژورنال: پژوهش در پزشکی 2018

Abstract Introduction: Physiology of reproduction is very complex and many factors influence on animal infertility.Today, researchers simulate weightlessness physiology  for investigation about  space biology. The best successful model for microgravity physiology simulation on the floor is in the rat hind-limb suspenion .The aim of this study is evaluation and comparision of  the effect of v...

Journal: :Advances in physiology education 2005
Martin E Feder

Physiology may play an important, if not essential role, in a liberal arts education because it provides a context for integrating information and concepts from diverse biological and extra-biological disciplines. Instructors of physiology may aid in fulfilling this role by clarifying the core concepts that physiological details exemplify. As an example, presented here are the core principles t...

Journal: :Proceedings. Biological sciences 2016
Tobias Pamminger David Treanor William O H Hughes

The ubiquitous trade-off between survival and costly reproduction is one of the most fundamental constraints governing life-history evolution. In numerous animals, gonadotropic hormones antagonistically suppressing immunocompetence cause this trade-off. The queens of many social insects defy the reproduction-survival trade-off, achieving both an extraordinarily long life and high reproductive o...

Journal: :Toxics 2023

Methylene blue (MB) is a disinfectant used in aquaculture to prevent and treat fish diseases. However, the release of MB can pose risk receiving water bodies. Zooplankton are most sensitive organisms among aquatic life. Hence, this study examined acute chronic toxic effects on zooplankton using Daphnia magna (D. magna) as test organism provide basic data for assessment. The results show that 48...

Journal: :The Yale Journal of Biology and Medicine 1957
William U. Gardner

This volume presents, in 14 chapters by different authors, the formal papers presented at a symposium held at the University of Liverpool in July 1954. The title of the book is taken from the sub-title of the symposia on comparative endocrinology of vertebrates. Each chapter is followed by a page or so of discussion so almost all of the 58 participants at the symposium contributed. Each chapter...

Journal: :Plant, cell & environment 2016
Jessica A Savage Michael J Clearwater Dustin F Haines Tamir Klein Maurizio Mencuccini Sanna Sevanto Robert Turgeon Cankui Zhang

Despite the crucial role of carbon transport in whole plant physiology and its impact on plant-environment interactions and ecosystem function, relatively little research has tried to examine how phloem physiology impacts plant ecology. In this review, we highlight several areas of active research where inquiry into phloem physiology has increased our understanding of whole plant function and e...

Journal: :The Yale Journal of Biology and Medicine 2008
Harold E. Himwich

Those facts which should be included in any good textbook of physiology are reviewed, together with a systematic consideration of the subject matter of general physiology, the neuro-muscular mechanisms, the circulation, respiration, metabolism, excretion, reproduction, and the internal secretions. The book does not afford the more detailed information necessary for the advanced worker. Moreover...

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