نتایج جستجو برای: tabun

تعداد نتایج: 177  

2014
Sameh El Sayed Lluís Pascual Alessandro Agostini Ramón Martínez-Máñez Félix Sancenón Ana M Costero Margarita Parra Salvador Gil

The synthesis, characterization and sensing features of a novel probe 1 for the selective chromogenic recognition of diisopropylfluorophosphate (DFP), a sarin and soman mimic, in 99:1 (v/v) water/acetonitrile and in the gas phase is reported. Colour modulation is based on the combined reaction of phosphorylation of 1 and fluoride-induced hydrolysis of a silyl ether moiety. As fluoride is a spec...

Journal: :Lithic technology 2023

This study examines parameters, causes, and spatio-temporal patterns of handaxe shape variation from Tabun cave in the Levant, Khall Amayshan 4B Khabb Musayyib northern Arabia. These assemblages span range most pointy to rounded handaxes found anywhere during Acheulean. The AGMT3D program is used conduct high resolution geometric morphometric analysis form 3D models. Shape tested against blank ...

Journal: :American Journal of Animal and Veterinary Sciences 2021

Journal: :Journal of human evolution 2005
Rainer Grün Chris Stringer Frank McDermott Roger Nathan Naomi Porat Steve Robertson Lois Taylor Graham Mortimer Stephen Eggins Malcolm McCulloch

In order to resolve long-standing issues surrounding the age of the Skhul early modern humans, new analyses have been conducted, including the dating of four well-provenanced fossils by ESR and U-series. If the Skhul burials took place within a relatively short time span, then the best age estimate lies between 100 and 135 ka. This result agrees very well with TL ages obtained from burnt flint ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2009
Timothy D Weaver Jean-Jacques Hublin

Childbirth is complicated in humans relative to other primates. Unlike the situation in great apes, human neonates are about the same size as the birth canal, making passage difficult. The birth mechanism (the series of rotations that the neonate must undergo to successfully negotiate its mother's birth canal) distinguishes humans not only from great apes, but also from lesser apes and monkeys....

2002
Milford H. WOLPOFF Sang-Hee LEE

The human remains from the Late Pleistocene Mousterian sites in modern day Israel raised the issue of variation for the first time in the history of paleoanthropology. Their current interpretation is both problematic, in that the sources of their variation still remain unresolved, and historic, in that attempts at resolution reflect the currently accepted philosophy of the paleoanthropologists ...

Journal: :Immunology letters 2005
Jennifer K Johnson Douglas M Cerasoli David E Lenz

The study of monoclonal antibodies raised against defined hapten epitopes has been a useful approach to understanding antibody repertoire. The situation in which antibodies are raised against different epitopes of the same hapten but have some common recognition or binding features has been less frequently examined. To explore the latter situation, we have characterized three monoclonal antibod...

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