Results 131 to 140 of about 584,987 (262)

War and Natural Resource Exploitation [PDF]

Although the relationship between natural resources and civil war has received much attention, little is known about the underlying mechanisms. Controversies and contradictions in the stylized facts persist because resource extraction is treated as ...
Frederick Van der Ploeg, Dominic Rohner
core  

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

Advanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm, André B. Baldissera, Rainer Völkl, Uwe Glatzel   +3 more
wiley   +1 more source

Genomic and functional dissection of natural transformation-related genes in <i>Piscirickettsia salmonis</i>. [PDF]

Microbiol Spectr
Higuera-Llantén S, Ojeda N, Protz J, Marshall SH.   +3 more
europepmc   +1 more source

Markerless gene deletion in Ralstonia solanacearum based on its natural transformation competence. [PDF]

Front Microbiol, 2022
Yan J, Lin N, Wang X, Chen X, Wang H, Lin Q, Zhou X, Zhang L, Liao L.   +8 more
europepmc   +1 more source

Powder Optimization Strategies for Binder Jetting Printing of BaTiO3 and Ba0,6Sr0,4TiO3 Ceramics

Advanced Engineering Materials, EarlyView.
Powder optimization is investigated to enable binder jetting of BaTiO3 and Ba0.6Sr0.4TiO3 ferroelectric ceramics. The antagonistic relationship between flowability and binder compatibility is addressed through binder impregnation of granulated powders and fumed silica addition to fine powders.
Fanny Pruvost, Lionel Presmanes, Soléna Colin, Marie Vidal, Sophie Guillemet‐Fritsch   +4 more
wiley   +1 more source

Molecular mechanisms and applications of natural transformation in bacteria. [PDF]

Front Microbiol
Niu C, Wu H, Wang X, Hu L, Han Y, Qiao J.   +5 more
europepmc   +1 more source

The RecA-directed recombination pathway of natural transformation initiates at chromosomal replication forks in the pneumococcus. [PDF]

Proc Natl Acad Sci U S A, 2023
Johnston CHG, Hope R, Soulet AL, Dewailly M, De Lemos D, Polard P.   +5 more
europepmc   +1 more source

Influence of an Oxygen‐Free Atmosphere on Diamond‐Single‐Grain Scratching of Ti–6Al–4V

Advanced Engineering Materials, EarlyView.
Single‐grain scratching of Ti–6Al–4V is investigated under controlled, oxygen‐free, and ambient atmospheres using a novel experimental setup with in situ high‐speed imaging. The approach enables direct observation of chip formation and adhesion under suppressed oxidation.
Berend Denkena, Benjamin Bergmann, Michael Zenger   +2 more
wiley   +1 more source

A tripartite protein complex promotes DNA transport during natural transformation in Firmicutes. [PDF]

Proc Natl Acad Sci U S A
Dewailly M, Fauconnet Y, Ducrot C, Soulet AL, Campo N, Guerois R, Radicella JP, Polard P, Andreani J, Johnston CHG.   +9 more
europepmc   +1 more source

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

Advanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +1 more source