Results 131 to 140 of about 63,836 (241)

Microbicidas Metodo de Prevencion en VIH/SIDA Controlado por Mujeres. [PDF]

open access: yesHisp Health Care Int, 2009
Ruiz C, Torres V, Cianelli R, Ferrer L.
europepmc   +1 more source

Importància biogeoquímica del pol·len i les espores en un sistema litoral

open access: yes, 2018
Trabajo final de grado presentado por Sílvia Guillem Ullés en la Facultat de Bilogia de la Universitat de Barcelona (UB), realizado bajo la dirección del Dr. Francesc Peters del Institut de Ciències del Mar (ICM-CSIC)
openaire   +1 more source

Molecular‐Tailored Ultrathin Hydrophobic Interphases for High‐Stable Zinc Metal Anodes

open access: yesCarbon Energy, EarlyView.
Through a systematic comparison of the effects of alkyl small molecules with different backbone chain lengths and terminal structural distributions on the surface coverage and ordering of hydrophobic interfacial layers, the highly ordered FT‐SAMs are successfully constructed.
Jiajin Song   +9 more
wiley   +1 more source

Interface‐Engineered Li–Ni–O/Ni Heterostructures With Tunable Vacancies on Biochar Enable Biomass‐to‐Hydrogen Conversion

open access: yesCarbon Energy, EarlyView.
This study shows that lithium induces Li–Ni–O/Ni heterostructures on biochar, creating oxygen vacancies and optimal acid–base environments that enhance steam activation and suppress carbon deposition. These interfacial effects and synergistic modulation lead to high hydrogen yields at moderate temperatures, providing a scalable catalyst design strategy
Jiali Guo   +7 more
wiley   +1 more source

Monosubstituted N‐Arylhydroxylamine Chemistry: Integrating Contemporary Synthetic Approaches for the Efficient Construction of Diverse Heterocyclic Scaffolds

open access: yesChemistry – A European Journal, EarlyView.
Monosubstituted N‐arylhydroxylamines represent a unique subclass of hydroxylamines that act as pivotal intermediates in redox transformations and as versatile platforms for further synthetic transformations. They serve as key building blocks in the synthesis of architecturally complex heterocycles and other valuable organic compounds.
Michael G. Kallitsakis   +2 more
wiley   +1 more source

SO2 Transfer Enabled by an Easy‐to‐Handle Ionic Liquid

open access: yesChemistry – A European Journal, EarlyView.
Best of both worlds: The ionic liquid [NEt3Me][Cl(SO2)n] unites the atom economy and low cost of sulfur dioxide with the safety and applicability of common surrogates, streamlining SO2 transfer to access to 3‐sulfolenes, sulfonamides, and SuFEx reagents.
Johanna S. Sturm   +11 more
wiley   +1 more source

Espor oyuncularının oyun içi davranışlarının makine öğrenmesi yöntemleri ile incelenmesi

open access: yes
Bu tez çalışmasında, makine öğrenmesi metotları kullanarak farklı liglerdeki League of Legends oyuncularının belirli bir sezondaki verileri analiz edilmiş, bu oyuncuların profesyonel olma/olmama durumu makine öğrenmesi sınıflandırma algoritmaları ile tahmin edilmiş ve kullanılan algoritmaların performans ölçümleri kıyaslanmıştır.
openaire   +1 more source

From Inflammatory Bowel Disease to Cancer: Gut Microbiota–Immune Microenvironment Crosstalk and Natural Product‐Based Therapeutic Opportunities

open access: yesCancer Nexus, EarlyView.
ABSTRACT Inflammatory bowel disease (IBD), primarily Crohn's disease and ulcerative colitis, is a chronic relapsing inflammatory disorder of the gastrointestinal tract and an important risk factor for IBD‐associated cancer. Increasing evidence suggests that gut microbiota dysbiosis, epithelial barrier dysfunction, and immune microenvironment remodeling
Xue Zhang   +4 more
wiley   +1 more source

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