Results 51 to 60 of about 150,499 (207)

Improving the Efficiency of a Bioreactor Equipped With Mixed‐Flow Impellers

open access: yesChemical Engineering &Technology, Volume 48, Issue 7, July 2025.
The present work investigated the biological performance of mixed‐flow impellers. To the authors’ knowledge, this is the first experimental study on such impellers in a fermentation process using A. vinelandii, which was chosen as a microorganism due to its high oxygen demand.
David Posadas‐Navarro   +6 more
wiley   +1 more source

Guía Pedagógica: Química Orgánica [PDF]

open access: yes, 2015
Guía ...
Avila Cordoba Liliana Ivette
core  

Grazing Modulates the Multiscale Spatial Structure of Dryland Vegetation

open access: yesGlobal Change Biology, Volume 31, Issue 7, July 2025.
We studied how grazing pressure affects plant spatial patterns in drylands by using satellite images, field plant size and abundance data, and a mathematical model. We found that increasing grazing pressure has opposite effects on vegetation spatial structure to those of aridity, which might be explained by the fact that grazing decreases plant size ...
Benoît Pichon   +19 more
wiley   +1 more source

Los egresados de la UAM en el mercado de trabajo : investigación evaluativa sobre la calidad de la oferta de servicios educativos [PDF]

open access: yes, 1997
1 archivo PDF (155 páginas)El libro está constituido en dos secciones: La primera comprende una breve introducción del proyecto, así como los principales criterios metodológicos que guiaron la investigación.
González Robles, Rosa O.   +3 more
core  

Improvement of the Antimicrobial Peptide Activity by Means of Chitosan‐Based Nanoparticles

open access: yesBiotechnology Journal, Volume 20, Issue 6, June 2025.
Graphical Abstract and Lay Summary This study demonstrated the enhancement of the bioactivity of two different antimicrobial peptides (AMPs), Cm‐p1 and Lip1, against Botrytis cinerea by encapsulating them in chitosan nanoparticles (CS‐NPs). The use of computational predictions allowed us the analysis and optimization of various parameters associated ...
Sara Gálvez‐Rodríguez   +5 more
wiley   +1 more source

Tools in Spanish Universities to facilitate the transmission from High School to University and their assessment. [PDF]

open access: yes, 2011
Incoming students in the University have education deficiencies, so universities studies require a sound basis of scientific knowledge. In this project are analysed instruments to reinforcing knowledge in those areas related to the studies that ...
Ayuga Téllez, Esperanza   +3 more
core   +1 more source

Hydrological Connectivity Enhances Fish Biodiversity in Amazonian Mining Ponds: Insights From eDNA and Traditional Sampling

open access: yesMolecular Ecology, Volume 34, Issue 11, June 2025.
ABSTRACT Artisanal and small‐scale gold mining (ASGM) expansion in the Madre de Dios region of the Peruvian Amazon has transformed primary forests into a novel wetland complex of thousands of abandoned mining ponds. Despite their ecological relevance, post‐mining recovery of these systems remains understudied, particularly regarding fish biodiversity ...
Camila Timana‐Mendoza   +7 more
wiley   +1 more source

La Química como Materia Básica de los Nuevos Grados de Ingeniería [PDF]

open access: yes, 2010
Los planes de estudio de diferentes ingenierías (por ejemplo las de la rama industrial) deben incluir, según las órdenes ministeriales, al menos seis créditos ECTS de Química Básica.
Martínez Urreaga, Joaquín   +1 more
core   +1 more source

Enhancing Stability of Microwave‐Synthesized Cs2SnxTi1‐xBr6 Perovskite by Cation Mixing

open access: yesChemSusChem, Volume 18, Issue 9, May 5, 2025.
This research introduces a microwave radiation synthesis technique for synthesizing Cs2SnxTi1‐xBr6 lead‐free double perovskite powders. By incorporating Sn4+ cations, the stability of the material is improved, particularly at elevated temperatures and outside conditions.
Emmanuel Reyes‐Francis   +9 more
wiley   +1 more source

Aportaciones de la Ingeniería Química al desarrollo y evolución de la industria alimentaria [PDF]

open access: yes, 2011
La industria alimentaria se ocupa de la elaboración, transformación, preparación, conservación y envasado de los alimentos, productos destinados al consumo humano y animal.
Durán-Barrantes, María de la Montaña   +1 more
core  

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