نتایج جستجو برای: 1318

تعداد نتایج: 457  

Journal: :Science 2017
Etienne Patin Marie Lopez Rebecca Grollemund Paul Verdu Christine Harmant Hélène Quach Guillaume Laval George H Perry Luis B Barreiro Alain Froment Evelyne Heyer Achille Massougbodji Cesar Fortes-Lima Florence Migot-Nabias Gil Bellis Jean-Michel Dugoujon Joana B Pereira Verónica Fernandes Luisa Pereira Lolke Van der Veen Patrick Mouguiama-Daouda Carlos D Bustamante Jean-Marie Hombert Lluís Quintana-Murci

Bantu languages are spoken by about 310 million Africans, yet the genetic history of Bantu-speaking populations remains largely unexplored. We generated genomic data for 1318 individuals from 35 populations in western central Africa, where Bantu languages originated. We found that early Bantu speakers first moved southward, through the equatorial rainforest, before spreading toward eastern and ...

2007
ANTONIO R. WEBB JIAN YANG GUILLERMO A. AMEER

A new method for determining the extent of reaction of thermoset elastomers was developed based on equilibrium swelling and dynamic mechanical analysis (DMA). The extent of reaction was defined based on the molecular weight between crosslinks (Mc) of a polymer sample in relation to Mc at the onset of gelation and at complete reaction. The molecular weight between crosslinks was measured using e...

2013
Alexander Volokh Günter Neumann

We describe our participation in the MTPIL Hindi Parsing Shared Task-2012. Our system achieved the following results: 82.44% LAS/90.91% UAS (auto) and 85.31% LAS/92.88% UAS (gold). Our parser is based on the linear classification, which is suboptimal as far as the accuracy is concerned. The strong point of our approach is its speed. For parsing development the system requires 0.935 seconds, whi...

2017
Anna Knaislová Pavel Novák Sławomir Cygan Lucyna Jaworska Marcello Cabibbo

Ti-Al-Si alloys are prospective material for high-temperature applications. Due to low density, good mechanical properties, and oxidation resistance, these intermetallic alloys can be used in the aerospace and automobile industries. Ti-Al-Si alloys were prepared by powder metallurgy using reactive sintering, milling, and spark plasma sintering. One of the novel SPS techniques is high-pressure s...

2001
M. G. Baik

cesss to a rye-grass pasture during 4 h/d. Brewery supplementation at the 75% level increased blood pH (P<0.01), reduced glucose (P<0.001), and tended to increase protein (P=0.10). Besides, there was a general correlation within glucose and protein, glucose and glutamic-oxaloacetic transaminase (GOT), pH and GOT, protein and GOT. In conclusion, high levels of brewery supplementation increase bl...

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