Results 41 to 50 of about 450 (135)

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

Chemical 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, Said Carrillo‐Tavera, María Soledad Córdova, Mauricio Trujillo‐Roldán, Marco Ramírez‐Argáez, Edtson Herrera‐Valencia, Gabriel Ascanio   +6 more
wiley   +1 more source

El plan de estudios de Ingeniería Química en la Sede de Bogotá: evolución de sus principales características

Ingeniería e Investigación, 1984
El propósito del presente documento es doble. Por una parte, se consigna brevemente el origen y desarrollo de la carrera de Ingeniería Química en la Universidad Nacional - Bogotá y sus relaciones con la evolución histórica de esa disciplina a escala ...
Arcesio López P.
doaj  

Grazing Modulates the Multiscale Spatial Structure of Dryland Vegetation

Global 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, Sonia Kéfi, Isabelle Gounand, Nicolas Gross, Yoann Le Bagousse‐Pinguet, Josquin Guerber, David Eldridge, Enrique Valencia, César Plaza, Jaime Martínez‐Valderrama, Hugo Saiz, Victoria Ochoa, Beatriz Gozalo, Emilio Guirado, Miguel García‐Gómez, Juan J. Gaitán, Sergio Asensio, Betty Josefina Mendoza, Sophie Donnet, Fernando T. Maestre   +19 more
wiley   +1 more source

Silviano Enríquez Correa, destacado catedrático y difusor de la química en el Estado de México (1853-1900)

Ciencia Ergo Sum, 2009
Silviano Enríquez Correa realizó sus estudios de nivel medio superior y de ingeniería en el Instituto Científico y Literario del Estado de México, del cual llegó a ser director y donde se interesó por la química. Además de ser un profesor autodidacta que
Elena González Vargas, María de la Paz Ramos Lara   +1 more
doaj  

Ejemplo para el uso de un simulador en los estudios de ingeniería química

Educación Química, 2018
En el presente trabajo se presenta un ejemplo para la aplicación de las estrategias de simulación, haciendo uso de un simulador profesional. Se explica la concepción del ejercicio a desarrollar por el colectivo de estudiantes y se ejemplifican los ...
José Luis Palomino, Lourdes Zumalacárregui de Cárdenas   +1 more
doaj   +1 more source

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

Biotechnology 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, Patricia Asensio‐Calavia, Andrea Otazo‐Pérez, Patricia Abad‐Chico, José M. Pérez de La Lastra, Edgar Pérez‐Herrero   +5 more
wiley   +1 more source

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

Molecular 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, Alonso Reyes‐Calderón, Patrick Venail, Ricardo Britzke, Monica C. Santa‐Maria, Julio M. Araújo‐Flores, Miles Silman, Luis E. Fernandez   +7 more
wiley   +1 more source

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

ChemSusChem, 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, Beatriz Julián‐López, Carlos Echeverría‐Arrondo, Jhonatan Rodríguez‐Pereira, Diego Esparza, Tzarara López‐Luke, Jaime Espino‐Valencia, Daniel Prochowicz, Iván Mora‐Seró, Silver‐Hamill Turren‐Cruz   +9 more
wiley   +1 more source

Reviewing Glycosyl‐Inositols: Natural Occurrence, Biological Roles, and Synthetic Techniques

ChemBioChem, Volume 26, Issue 6, March 15, 2025.
Overall, this comprehensive review underscores the significance of glycosyl inositols as versatile molecules with diverse biological functions and promising applications in scientific research and industry. Methods for their chemical and enzymatic synthesis are also reviewed, highlighting recent advances and challenges in the field.
Alfonso Miranda‐Molina, Laura Alvarez, Mayra Antunez‐Mojica, Benjamín Velasco‐Bejarano   +3 more
wiley   +1 more source

Low‐toxicity metal–organic frameworks: Sustainable solutions for versatile applications

Bulletin of the Korean Chemical Society, Volume 46, Issue 3, Page 265-280, March 2025.
Developing low‐toxicity Metal‐organic Frameworks (MOFs) involves challenges related to stability, scalability, and cost‐effectiveness. Research now focuses on improving MOF design to enhance robustness and exploring greener synthesis methods to minimize environmental impact. Abstract The conventional synthesis of metal‐organic framework (MOF) materials
Juan L. Obeso, Catalina V. Flores, Aldo G. Gutiérrez, Carolina Leyva, Juan Carlos Valdivia‐Corona, Leonardo D. Herrera‐Zúñiga, José Antonio de los Reyes, Ricardo A. Peralta, Ilich A. Ibarra   +8 more
wiley   +1 more source