Stable carbon isotope analysis on fossil Cedrus pollen shows summer aridification in Morocco during the last 5000 years
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چکیده
منابع مشابه
Stable Isotope Analysis of Fossil Bone
The biological signal hidden in stable carbon, nitrogen, oxygen and strontium stable isotope ratios in archaeological and fossil skeletal finds give clues to a variety of palaeoecological parameters. In contrast to trace element analysis, these parameters can be assessed on the individual level, which is a major advantage for palaeoanthropology, where single finds prevail over multiple finds at...
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in the present study, the effect of e-64 at different concentrations (0.5, 1, 5 and 10 µm) added to (1) the ivm medium on oocyte nuclear maturation and developmental competence of ovine oocytes, and (2) to the ivc medium on embryonic development of ovine embryos were investigated.
Multidecadal climate variability in Brazil’s Nordeste during the last 3000 years based on speleothem isotope records
[1] We present the first high resolution, approximately 4 years sample spacing, precipitation record from northeastern Brazil (hereafter referred to as ‘Nordeste’) covering the last 3000 yrs from Th-dated stalagmites oxygen isotope records. Our record shows abrupt fluctuations in rainfall tied to variations in the intensity of the South American summer monsoon (SASM), including the periods corr...
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The Islamic Revolution, as the greatest historical evolution of contemporary times, has caused America`s interests face many challenges. Understanding the tools and strategies used by the United States against the Islamic Republic of Iran helps us to better understand and confront the country. In this regard, using the theory of invasive realism, American strategies against the Islamic Republic...
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Introduction: Assessing the course of Alzheimer's disease and other dementias is very important due to lack of a definitive treatment, increase in life expectancy, and aging population. This study aimed to investigate the long-term trend in the incidence and mortality rate of Alzheimer's and other dementias in Iran during 1990-2019. Materials and Methods: Age-Standardized Incidence Rate (ASIR) ...
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ژورنال
عنوان ژورنال: Journal of Quaternary Science
سال: 2019
ISSN: 0267-8179,1099-1417
DOI: 10.1002/jqs.3103