نتایج جستجو برای: especially during quaternary period therefore

تعداد نتایج: 2715562  

Journal: :iranian journal of earth science 0
saeed saadat department of geology, mashhad branch, islamic azad university, mashhad, iran charles r. stern department of geological sciences, university of colorado, boulder, co, usa

the lut block in eastern iran is a micro-continental block within the convergent orogen between the arabian, eurasian and indian plates. large areas of the north-central, eastern, and western lut block are covered by volcanic rocks of paleogene, neogene and quaternary age.  peak volcanic activity took place in the north-central part of the lut block during the eocene, and then dramatically decr...

2017
Seokhyun Yoon Si Joon Kim Young Jun Tak Hyun Jae Kim

We report a method for fabricating solution-processed quaternary In-Ga-Zn-O (IGZO) thin-film transistors (TFTs) at low annealing temperatures using a vertical diffusion technique (VDT). The VDT is a deposition process for spin-coating binary and ternary oxide layers consecutively and annealing at once. With the VDT, uniform and dense quaternary oxide layers were fabricated at lower temperatures...

2004
JOHN W. WILLIAMS BRYAN N. SHUMAN THOMPSON WEBB PATRICK J. BARTLEIN PHILLIP L. LEDUC

This paper integrates recent efforts to map the distribution of biomes for the late Quaternary with the detailed evidence that plant species have responded individualistically to climate change at millennial timescales. Using a fossil-pollen data set of over 700 sites, we review late-Quaternary vegetation history in northern and eastern North America across levels of ecological organization fro...

2017
Eduardo Ottimofiore Camille Albouy Fabien Leprieur Patrice Descombes Michel Kulbicki David Mouillot Valeriano Parravicini Loïc Pellissier

Coral reefs and their associated fauna are largely impacted by ongoing climate change. Unravelling species responses to past climatic variations might provide clues on the consequence of ongoing changes. Here, we tested the relationship between changes in sea surface temperature and sea levels during the Quaternary and present-day distributions of coral reef fish species. We investigated whethe...

Journal: :nursing practice today 0
shilan azizi department of nursing, isfahan (khorasgan) branch, islamic azad university, isfahan, iran. narges sadeghi department of nursing, isfahan (khorasgan) branch, islamic azad university, isfahan, iran. mitra molaeinezhad department of midwifery, isfahan (khorasgan) branch, islamic azad university, isfahan, iran.

background & aim : neonatal period is one of the most high-risk stages of human life affected by some factors associated to pre- and post-delivery stages, such as invasive procedures. anxiety is found to be one of the most common psychological disorders during prenatal period, especially the third trimester. until now, significant negative consequences of anxiety on newborn’s health are reporte...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2012
Graham W Prescott David R Williams Andrew Balmford Rhys E Green Andrea Manica

The late Quaternary period saw the rapid extinction of the majority of the world's terrestrial megafauna. The cause of these dramatic losses, especially the relative importance of climatic change and the impacts of newly arrived people, remains highly controversial, with geographically restricted analyses generating conflicting conclusions. By analyzing the distribution and timing of all megafa...

Journal: :محیط زیست طبیعی 0
جلیل ایمانی هرسینی کارشناس ارشد رشتة محیط زیست، دانشکدة منابع طبیعی، دانشگاه تهران محمد کابلی دانشیار گروه محیط زیست، دانشکدة منابع طبیعی، دانشگاه تهران جهانگیر فقهی دانشیار گروه جنگلداری و اقتصاد جنگل، دانشکدة منابع طبیعی، دانشگاه تهران علی طاهرزاده کارشناس ارشد سنجش از دور سازمان فضایی ایران عاطفه اسدی کارشناس ارشد رشته مهندسی منابع طبیعی ـ محیط زیست گرایش زیستگاه ها و تنوع زیستی، دانشکده محیط زیست و انرژی، دانشگاه آزاد اسلامی واحد علوم تحقیقات تهران

during the time, land cover and as a result land use patterns go through fundamental changes and human factors can have the most important role in this process. knowing these changes could be of great help to the future management of this region. according to this, the main purpose of this study is to monitor the land use-cover changes in the hamedan province area during the three recent decade...

2010

As FAR BACK as the days of Pliny in the first century, and probably long before, horses, cows, sheep, goats, dogs, and chickens were known to be infested with fleas, bots, and lice. Until the white man arrived in America not one of these animals had been present on this continent for a long time, with the possible exception of the dog. It is natural to assume therefore that all of the specific ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید