نتایج جستجو برای: dating back at least four thousand years
تعداد نتایج: 4739960 فیلتر نتایج به سال:
BACKGROUND Many practices in the UK have computerised information dating back to the 1990s. These health records provide contemporaneous collected longitudinal data for analysis of health trends and their management in primary care over time. OBJECTIVE This study examines the trends in common mental health problems (CMHPs), prescription of antidepressant, anxiolytics and hypnotics and medica...
Current models of the peopling of the higher-elevation zones of the Tibetan Plateau postulate that permanent occupation could only have been facilitated by an agricultural lifeway at ~3.6 thousand calibrated carbon-14 years before present. Here we report a reanalysis of the chronology of the Chusang site, located on the central Tibetan Plateau at an elevation of ~4270 meters above sea level. Th...
asadi’s shahnameh is a great epic consisting of twenty-four thousand distiches and is attributed to asadi or another poet of the same nickname. this work was created in the same line of development as ferdowsi’s shahnameh. the main theme is the old campaign of soleymān to iran to confront with rostam and keykhosrow and to repeat the pattern of rostam’s battles with his children in a state of an...
?anl?urfa is an important archaeological and cultural region where people have left permanent artifacts dating back to 12 thousand years. For this reason, it very record document the in heritage intense. With developing technology, has become easier historical transfer them future generations. In direction, can be recorded easily accurately with photogrammetry technique, which one of tools offe...
The Xujiayao-Houjiayao site in Nihewan Basin is among the most important Paleolithic sites in China for having provided a rich collection of hominin and mammalian fossils and lithic artifacts. Based on biostratigraphical correlation and exploratory results from a variety of dating methods, the site has been widely accepted as early Upper Pleistocene in time. However, more recent paleomagnetic a...
Dating back as far as 100 ka, the Blombos ochre and the Diepkloof ostrich egg engravings are considered among the earliest fossilized evidence of human symbolic behavior. Of special interest to this study is the temporal trajectory spanning more than 30 thousand years from earlier simpler parallel line patterns to later complex cross-hatchings suggesting adaptive compositional development. Thro...
BACKGROUND A major challenge for ancient DNA (aDNA) studies on insect remains is that sampling procedures involve at least partial destruction of the specimens. A recent extraction protocol reveals the possibility of obtaining DNA from past insect remains without causing visual morphological damage. We test the applicability of this protocol on historic museum beetle specimens dating back to AD...
Uranium-series dating of carbonatitic ejecta clasts constrains the crystallization and differentiation timescales of the Laacher See volcano, which erupted 6·3 km of magma (dense rock equivalent) during one of the largest Late Quaternary eruptions in Central Europe. Carbonatites form a distinct population among plutonic ejecta that are present in the middle and late erupted Laacher See tephra. ...
throughout human evolution history, beauty has always been one of the necessary integral components of human need. as greer (2010) said, “one of the prehistoric human’s responses to the animal life around them was to etch and paint these animals on the walls of their caves. turning them into art and rendering them beautiful was a natural response - a way to help make sense of a hostile and conf...
Traditional Chinese medicine (TCM) is today practiced worldwide, rivaling biomedicine in terms of its globalization. One of the most common TCM diagnoses is "Liver qi constraint," which, in turn, is commonly treated by an herbal formula dating back to the 10th century. In everyday TCM practice, biomedical disease categories such as depression or anxiety and popular disease categories such as st...
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