Results 111 to 120 of about 88,734 (263)

Testing Times: Challenges in Disentangling Admixture Histories in Recent and Complex Demographies

, 2023
AbstractPaleogenomics has expanded our knowledge of human evolutionary history. Since the 2020s, the study of ancient DNA has increased its focus on reconstructing the recent past. However, the accuracy of paleogenomic methods in answering questions of historical and archaeological importance amidst the increased demographic complexity and decreased ...
Williams, Matthew P., Flegontov, Pavel, Maier, Robert, Huber, Christian D.   +3 more
openaire   +2 more sources

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé, Lukas Neubert, Anton Yehorov, Till M. J. Stadtmüller, Christos G. Aneziris, Olena Volkova   +5 more
wiley   +1 more source

A Thermodynamic 3D Model for the Simulation of Diffusion‐Controlled Alloying Processes in Heterogeneous Material Structures

Advanced Engineering Materials, EarlyView.
A numerical model resulting from irreversible thermodynamics for describing transport processes is introduced, focusing on thermodynamic activity gradients as the actual driving force for diffusion. Implemented in CUDA C++ and using CalPhaD methods for determining the necessary activity data, the model accurately simulates interdiffusion in aluminum ...
Ulrich Holländer, Leonhard Holländer, André Langohr, Hans Jürgen Maier   +3 more
wiley   +1 more source

Influence of Sample Preparation and Processing Procedures on the Thermal Diffusivity of MgO‐C Refractories

Advanced Engineering Materials, EarlyView.
The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan, Rhena Wulf, Till M. J. Stadtmüller, Christos G. Aneziris, Tobias M. Fieback   +4 more
wiley   +1 more source

Genome-wide analysis of unrecognised ethnic group Chuanqing people revealing a close affinity with Southern Han Chinese

Annals of Human Biology, 2020
Background Chuanqing is an unrecognised ethnic group in Guizhou, southwest China. The genetic history of the Chuanqing people is hotly debated due to a lack of available genetic data.
Jiani Lu, Hongling Zhang, Zheng Ren, Qiyan Wang, Yubo Liu, Yingxiang Li, Guanglin He, Jianxin Guo, Jing Zhao, Rong Hu, Lan-Hai Wei, Gang Chen, Jiang Huang, Chuan‑Chao Wang   +13 more
doaj   +1 more source

The life history consequences of admixture between intentionally and unintentionally introduced populations of Trissolcus japonicus in Europe

Biological Control
Introducing classical biological control agents from laboratory-reared populations into regions where adventive populations already exist could alter life history traits of the resulting admixed populations, having positive or negative consequences for ...
Nina Häner, Paul K. Abram, Tim Haye
doaj   +1 more source

Laser Metal Powder Deposition of Titanium Microalloyed HSLA Steel FeC0.12Si0.25Mn1.3

Advanced Engineering Materials, EarlyView.
This study investigates the additive manufacturing of titanium‐doped high‐strength low‐alloy (HSLA) steel via laser metal deposition. It reveals distinct process‐structure relationships for elemental powder blends compared to prealloyed feedstocks.
Olaf Stelling, Matthias Steinbacher, Nils Ellendt   +2 more
wiley   +1 more source

Editorial: Forensic investigative genetic genealogy and fine-scale structure of human populations

Frontiers in Genetics, 2023
He Guanglin, Wei Lan-Hai, Wang Mengge
doaj   +1 more source

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source

Admixture history of the South African "Coloured" populations

, 2019
Admixed people formed from colonial era migrations are a major feature of present-day diversity. In Southern Africa, establishment of the Dutch Cape Colony instigated the so-called "Coloured" communities, associated, essentialistically, with 'mixed descent'. This multi-way admixture involved diverse regional groups producing a fascinating genetic story.
openaire   +2 more sources