نتایج جستجو برای: we require a suitable dating method meanwhile
تعداد نتایج: 13942286 فیلتر نتایج به سال:
While a crystalline material is heated from room temperature to around 500°C, a weak but measurable light will be emitted. This light is known as thermoluminescence (TL) and is based on storage of energy from ionizing radiation in many naturally occurring TL minerals, including quartz and feldspar. The source of radiation is the radioactive materials such as uranium, thorium, potassium and cosm...
OBJECTIVE To investigate the relation between errors in calculation of gestational age and assessment of risk of Down's syndrome and to analyse the implications for screening programmes. DESIGN Retrospective analysis of dating of gestational age by menstrual history v ultrasound scan. Computer program with maternal age and concentrations of alpha fetoprotein and free beta human chorionic gona...
in the present work, a simple and sensitive method was developed for determination of morphine and heroin using gold nanoparticles as resonance rayleigh scattering (rrs) and colorimetric technique’s probe. synthesized gold nanoparticles by sodium citrate reduction method have a negative charge layer on their surfaces because of self-assembled citrate anions on their surface. binding of morphin...
Social networks play an important role in Web 2.0. For many users establishing contacts and staying in touch in the virtual world is more than just a spare time filler. In social networks like Facebook they provide much information about themselves in user profiles. Also for online dating the focus is on establishing new contacts. In general, three types of dating sites can be distinguished: mo...
with the increasing population and the need for more food, as well as with the development of science and technology, human approach to unnatural and often chemical inputs to increase agricultural production has been a great expansion and problems such as increased cancers, chronic diseases has created environmental pollution. implementation of organic organic is a solution to these problems . ...
Historical manuscript dating has always been an important challenge for historians but since countless manuscripts have become digitally available recently, the pattern recognition community has started addressing the dating problem as well. In this chapter, we present a family of local contour fragments (kCF) and stroke fragments (kSF) features and study their application to historical documen...
A recently developed dating method for glacier ice, based on the analysis of radiocarbon in carbonaceous aerosol particles, is thoroughly investigated. We discuss the potential of this method to achieve a reliable dating using examples from a midand a low-latitude ice core. Two series of samples from Colle Gnifetti (4450ma.s.l., Swiss Alps) and Nevado Illimani (6300ma.s.l., Bolivian Andes) demo...
Historical manuscript dating has always been an important challenge for historians but since countless manuscripts have become digitally available recently, the pattern recognition community has started addressing the dating problem as well. In this chapter, we present a family of local contour fragments (kCF) and stroke fragments (kSF) features and study their application to historical documen...
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