Results 51 to 60 of about 40,444 (202)

Carbon Nanotube‐Supported Mo, Ni, and Co Nitrides as Stable Catalysts for Levulinic Acid Conversion: Influence of Metal–Nitrogen Interactions and Confinement Effects

open access: yesChemistryOpen, Volume 14, Issue 11, November 2025.
Nitride‐phase catalysts (MxNy/CNT) are active in levulinic acid conversions. Ni3N/CNT shows the best performance due to hydrogenation‐active sites within and on the surface of CNT graphene layers. The CNT support also enhances the Ni3N phase stability, maintaining catalytic activity over multiple recycling tests.
Ivet Pafian   +6 more
wiley   +1 more source

A New Fuzzy Harmony Search Algorithm Using Fuzzy Logic for Dynamic Parameter Adaptation

open access: yesAlgorithms, 2016
In this paper, a new fuzzy harmony search algorithm (FHS) for solving optimization problems is presented. FHS is based on a recent method using fuzzy logic for dynamic adaptation of the harmony memory accepting (HMR) and pitch adjustment (PArate ...
Cinthia Peraza   +4 more
doaj   +1 more source

Spartan Daily, May 19, 1952 [PDF]

open access: yes, 1952
Volume 40, Issue 146https://scholarworks.sjsu.edu/spartandaily/11735/thumbnail ...
San Jose State University, School of Journalism and Mass Communications
core   +1 more source

GNSS and InSAR Integration for 3‐D Crustal Deformation in California and Western Nevada

open access: yesJournal of Geophysical Research: Solid Earth, Volume 130, Issue 11, November 2025.
Abstract The regions of California and Nevada are shaped by dynamic tectonic and hydrologic processes that drive significant crustal deformation. In this study we use the method of Shen and Liu (2020), https://doi.org/10.1029/2019ea001036 to integrate Global Navigation Satellite System (GNSS) and Interferometric Synthetic Aperture Radar (InSAR ...
Z.‐K. Shen, Z. Liu
wiley   +1 more source

Tijuana's Dynamic Unemployment and Output Growth [PDF]

open access: yes
During the 1990's, Mexico successfully implemented a program of economic reforms and free trade aimed at a complete restructuring of its economy. Surprisingly, the reform process seems to have had little impact on unemployment.
Alejandro Diaz-Bautista
core  

Sexual Harassment: A Maquila Reality [PDF]

open access: yes, 2007
ILRF_Mexico2006.pdf: 956 downloads, before Oct.
International Labor Rights Forum
core   +1 more source

Integrative taxonomy of the Ceratozamia mexicana Brongn. (Zamiaceae) species complex from a phylogeographic perspective

open access: yesPlant Species Biology, Volume 40, Issue 6, Page 530-546, November 2025.
Recent research has ignited a renewed interest in Ceratozamia cycads, unveiling their remarkable diversity. While previous studies primarily focused on morphology, this investigation employs a multidisciplinary approach, integrating phylogenetics, morphology, and ecological niches. Our methods identify seven distinct lineages as separate species.
Anwar Medina‐Villarreal   +2 more
wiley   +1 more source

El Niño in the City: Vulnerability assessment in Tijuana during the winter of 1997-98

open access: yesGeofísica Internacional, 2003
Un estudio piloto de la hidrología superficial de las cuencas que incluyen a la ciudad de Tijuana y la caracterización por medio de un Sistema de Información Geográfica de los riesgos resultantes de las precipitaciones extremas asociadas al event de El ...
Alain Winckell, Michel Le Page
doaj   +1 more source

Fluorescent Sensing of SO2 by MFM‐300(M) Metal–Organic Frameworks: Influence of Semi‐Open Metal Centres

open access: yesSmall, Volume 21, Issue 42, October 23, 2025.
The MFM‐300(M) series is investigated as a fluorescent platform for SO2 detection, highlighting how the nature of metal centers modulates fluorescence emission. MFM‐300(Al) displays the brightest emission and strongest response. Experimental and computational studies reveal distinct quenching mechanisms depending on the metal center, highlighting the ...
Valeria B. López‐Cervantes   +13 more
wiley   +1 more source

Power‐Dependent Modeling of Microwave FET Intrinsic Elements Using X‐Parameters

open access: yesMicrowave and Optical Technology Letters, Volume 67, Issue 9, September 2025.
ABSTRACT This study introduces and validates an alternative approach for modeling microwave FETs using power‐dependent electrical equivalent circuits extracted from conventional X‐parameters (ZL = 50 Ω). The proposed method expands the use of the conventional X‐parameters measurements by generating a model that is more practical and intuitive.
Alfredo Sánchez‐Ramos   +5 more
wiley   +1 more source

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