Results 31 to 40 of about 131,050 (349)

The state and prospects of development of the mineral resource base of solid minerals of the Bolivarian Republic of Venezuela

Руды и металлы, 2022
The status and prospects of the mineral resource base of solid minerals of the Bolivarian Republic of Venezuela, as well as possibilities for developing the Russian-Venezuelan cooperation in the field of geology and mineral resource management are ...
Aslambek A. Germakhanov, Alexander I. Chernykh, Mikhail M. Girfanov, Valery A. Istomin, Andrey S. Svatkov   +4 more
doaj   +1 more source

Fabrication and mechanical properties of porous tantalum carbon composites by chemical vapor deposition

Scientific Reports
This study investigates the deposition of tantalum (Ta) coatings on carbon foams using the chemical vapor deposition (CVD) method to enhance their compressive strength.
Junyu Zhu, Wenting Li, Hongzhong Cai, Xian Wang, Xingqiang Wang, Wuxun Zhu, Yan Wei, Xuming Li, Xingdong Zhao, Guixue Zhang, Haohong Jiang   +10 more
doaj   +1 more source

Comparison of Electrochemically Deposited Bi and Sn Catalysts onto Gas Diffusion Electrodes for the Electrochemical CO₂ Reduction Reaction to Formate

Applied Sciences, 2023
In this publication, we report about the selectivity and stability of bismuth (Bi)- and tin (Sn)-based electrocatalysts for the electrochemical CO2 reduction reaction (eCO2RR) for formate production.
Mila Manolova, Joachim Hildebrand, Sebastian Hertle, Şeniz Sörgel, Holger Kassner, Elias Klemm   +5 more
doaj   +1 more source

Hands‐on protocol for preparing water‐soluble fractions from agri‐food samples for NMR‐based metabolomics analysis

FEBS Open Bio, EarlyView.
This research protocol outlines a workflow for nuclear magnetic resonance (NMR)‐based metabolomics in the agri‐food sector. Using two case studies—strawberry leaves (solid matrix) and wine (liquid matrix)—it details the procedures for sample preparation, data acquisition, and processing.
Andrea Fernández‐Veloso, Jaime Hiniesta‐Valero, Alejandra Guerra‐Castellano, Miguel A. De la Rosa, Irene Díaz‐Moreno   +4 more
wiley   +1 more source

Feasibility and Tolerability of Performing Portable MRI for Neurological Disorders in an Outpatient Neurology Clinic: A Prospective Cohort

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Accessing brain magnetic resonance imaging (MRI) can be challenging, especially for underserved patients, which may lead to disparities in neurological diagnosis. Method This mixed‐methods study enrolled adults with one of four neurological disorders: mild cognitive impairment or dementia of the Alzheimer type, multiple sclerosis ...
Maya L. Mastick, Nomin Enkhtsetseg, Joseph Sadok, Matheus Mochetti, Annabel Sorby Adams, Jennifer Guo, Cristina Trapaga Hacker, Isabella Gomez Hjerthen, Seungwon Lee, Siddharth Satish, Andrew S. Ham, Justin Hill, Denis Balaban, Kevin Kyle, Rebecca L. Gillani, Marcelo Matiello, Aleksandar Videnovic, Eric C. Klawiter, W. Taylor Kimberly, Farrah J. Mateen   +19 more
wiley   +1 more source

Synthesis and Performance of Deep-Red Phosphorescent Iridium Complexes with Pyrone as an Auxiliary Ligand

Molecules
Two bis-cyclometalated heteroleptic iridium complexes incorporating 1-phenylisoquinoline (piq) as the main cyclometalating ligand and 3-hydroxy-2-methyl-4-pyrone (ma) or 2-ethyl-3-hydroxy-4H-pyran-4-one (ema) as the auxiliary ligand, namely Ir(piq)2(ma) (
Wen Jiang, Wenming Hou, Caixian Yan, Zhifeng Nie, Qiaowen Chang, Xiangguang Li, Weiping Liu   +6 more
doaj   +1 more source

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez, Alejandro F. Manchón‐Gordón, Antonio Vidal‐Crespo, Rafael Caballero‐Flores, Jhon J. Ipus, Clara F. Conde   +5 more
wiley   +1 more source

Microstructure and mechanical properties of NiV/Cu joints by diffusion welding

Hanjie xuebao
In response to the need for high-quality weldingof NiV alloy targets, the vacuum hot press diffusion welding of NiV alloy and oxygen-free copper without an intermediate layer was investigated at different temperatures under a fixed pressure of 20 MPa and
Hai PENG, Jingyu LI, Ke TANG, Ming WEN, Sixie LI, Chuanjun WANG   +5 more
doaj   +1 more source

Pt-Sn/SAPO-11: A preferred high-performance, stable, and regenerable hydrogenation catalyst for Jatropha oil

Fuel Processing Technology
The sustainable aviation fuel derived from Jatropha oil helps to reduce the dependence of the aviation industry on fossil energy and decrease total carbon emissions.
Miaoxin Guo, Qiang Liu, Junchen Du, Feng Feng, Yubao Chen, Aimin Zhang   +5 more
doaj   +1 more source

The fractal analysis of precious metals market [PDF]

, 2018
Kıymetli madenler antik dönemlerden bu yana insan hayatında hem ödeme aracı hem de tasarruf aracı olarak kullanılmaktadır. Modern piyasaların gelişmesi ile beraber, yatırımcılar tarafından portföye dahil edilmesi mümkün bir finansal varlık özelliği ...
Moralı, Tuncay, Uyar, Umut
core   +1 more source