Results 71 to 80 of about 62,214 (183)

Antimycobacterial and Nitric Oxide Production Inhibitory Activities of Goyazensolide and Centratherin Isolated From Eremanthus crotonoides by High‐Speed Countercurrent Chromatography

Chemistry &Biodiversity, Volume 23, Issue 3, March 2026.
ABSTRACT In this study, bioassay‐guided fractionation of the ethanolic extract from Eremanthus crotonoides leaves enabled the isolation of two bioactive sesquiterpene lactones, centratherin and goyazensolide, which were evaluated for their antimycobacterial and anti‐inflammatory properties.
Natalie Giovanna da Rocha Ximenes, Sanderson Dias Calixto, Thatiana Lopes Biá Ventura Simão, Elena B. Lassunskaia, Patrícia de Homobono de Brito Moura, Ivana Ramos Correa Leal, Michelle Frazão Muzitano, Shaft Corrêa Pinto   +7 more
wiley   +1 more source

Isolation, RP‐UHPLC‐ESI‐LIT‐Orbitrap‐MS/MS‐Based Metabolic Profiling and Anticandidal Activity of the Root and Leaf Secondary Metabolites of Monotes Kerstingii Gilg (Dipterocarpaceae)

Chemistry &Biodiversity, Volume 23, Issue 3, March 2026.
This paper describes the isolation and antifungal activity of secondary metabolites from the leaves and roots of Monotes kerstingii. The distribution of these metabolites in the roots and leaves was achieved through comprehensive RP‐UHPLC‐Orbitrap‐MS and MS/MS analysis.
Sorelle Kache Fotsing, Dominique Ngnintedo, Yanick Kevin Dongmo Melogmo, Alena Soboleva, Kevine Dongmo Jumeta, Bruno Ndjakou Lenta, Fabrice Fekam Boyom, Andrej Frolov, Norbert Arnold, Ludger A. Wessjohann, Norbert Sewald, Bonaventure Tchaleu Ngadjui, Ghislain Wabo Fotso   +12 more
wiley   +1 more source

Physics‐Guided Transfer Learning for Predicting Stress–Strain Curves With Limited Experimental Data

cScience, Volume 2, Issue 1, March 2026.
ABSTRACT Many measurements in materials science are expressed as full response curves rather than single scalar values. Nevertheless, predicting entire curves reliably from limited experimental data remains challenging. Here, we address this problem for hot‐deformation stress–strain curves using a physics‐guided transfer learning (PGTL) framework that ...
Jiaxuan Ma, Jie Xiong, Sheng Xu, Tianyi Zhou, Shuai Chen   +4 more
wiley   +1 more source

Hot workability, microstructural evolution, and dual path DRX mechanism of the 70Cu–30Ni alloy

Journal of Materials Research and Technology
This work systematically investigates the hot deformation behavior of the 70Cu–30Ni alloy for marine engineering through hot compression tests. The microstructural evolution and dynamic recrystallization (DRX) mechanisms were thoroughly analyzed via ...
Qiuhua Guo, Xiaoyu Jiang, Linhan Li, Shifang Li, Zhu Xiao, Yonghui Sun, Zhou Li   +6 more
doaj   +1 more source

Effect of Dynamic Recrystallization on the Transformed Ferrite Microstructures in HSLA Steel

Metals, 2020
The flow stress behavior of high-strength low-alloy (HSLA) steel at different true strains was studied using a hot compression test. The effect of dynamic recrystallization (DRX) on the transformed ferrite microstructures was investigated with electron ...
Ning Li, Wilasinee Kingkam, Renheng Han, Ming Tang, Hexin Zhang, Chengzhi Zhao   +5 more
doaj   +1 more source

Microstructure control and DRX characteristics of Ni–Co–W superalloys affected by changing deformation direction on [001] columnar grain

Journal of Materials Research and Technology
Controlling the evolution process of columnar grains is benefits to achieve microstructure regulation during subsequent hot processing in superalloys.
Hao Yu, Qingqi Meng, Yongquan Ning, Zhaotian Wang, Shuo Huang, Wenyun Zhang   +5 more
doaj   +1 more source

A review on kinetic models of dynamic recrystallization for magnesium alloys

Journal of Materials Research and Technology
Mg alloys are the lightest metallic structural material with tremendous application value. Dynamic recrystallization (DRX) is the most important grain refining and texture weakening mechanism for Mg alloys.
Tong Wang, Xin Liu, Minghai Wang, Yanchao Jiang, Chen Zhou, Qichi Le   +5 more
doaj   +1 more source

Análisis mineralógico integrado (QEMSCAN y DRX) de lutitas negras: los depósitos Tithonianos basales de la Formación Vaca Muerta (Cuenca Neuquina, Argentina)

Latin American Journal of Sedimentology and Basin Analysis
Se estudia la composición por difracción de rayos X y QEMSCAN (19 muestras) de fangolitas y margas de la Formación Vaca Muerta, acumuladas durante la transgresión tithoniana de la Cuenca Neuquina.
Luis Spalletti, Duncan Pirrie, Gonzalo D Veiga, Ernesto Schwarz, Gavyn Rollinson, Robin Shail, David Haberlah, Alan Butcher   +7 more
doaj  

Strain rate dependence of dynamic recrystallization and texture evolution in hot compressed Mg-Gd-Er-Zr alloy

Journal of Magnesium and Alloys
Hot deformation with high strain rate has been paid more attention due to its high efficiency and low cost, however, the strain rate dependent dynamic recrystallization (DRX) and texture evolution in hot deformation process, which affect the formability ...
Ning Ding, Wenbo Du, Shubo Li, Ke Liu, Xian Du, Zijian Yu   +5 more
doaj   +1 more source

ANÁLISIS ESTRUCTURAL Y MORFOLÓGICO DE PELÍCULAS DE NITRURO DE ALUMINIO OBTENIDAS POR DEPOSICIÓN DE LÁSER PULSADO

Ciencia e Ingeniería Neogranadina, 2010
En este trabajo, se presentan los resultados preliminares de peliculas nanoestructuradas de nitruro de aluminio (AlN), que fueron depositadas con el metodo de deposicion por laser pulsado (PLD).
Jaime Andrés Pérez Taborda, Henry Riascos Landázuri, Francy Nelly Jiménez García, Julio César Caicedo Angulo   +3 more
doaj