Results 31 to 40 of about 5,142 (164)

Reglamento REACH: Registro, Evaluación, Autorización y Restricción de las sustancias y mezclas químicas en la Unión Europea

open access: yesRevista de Salud Ambiental, 2019
Desde el punto de vista sanitario, resulta fundamental para llevar a cabo una adecuada evaluación de los riesgos, y tomar decisiones encaminadas a reducirlos, disponer de la información relacionada con la peligrosidad de los productos químicos y los ...
Carolina María Sánchez Peña   +1 more
doaj   +2 more sources

Photoprotective and Therapeutic Potential in Skin Cancer of Amaryllidaceae Alkaloids

open access: yesProceedings, 2019
Skin cancer has evolved as the most common malignant disease, accounting for 4.5% of all new cancer cases. [...]
Carol Castañeda   +5 more
doaj   +1 more source

Stronger expression of crassulacean acid metabolism (CAM) requires effective cuticular transpiration barriers but not necessarily strong succulence

open access: yesNew Phytologist, Volume 249, Issue 6, Page 2760-2775, March 2026.
Summary Discovering functional and evolutionary interdependencies of hydraulic traits and crassulacean acid metabolism (CAM) is crucial to understand CAM phenotype diversity and convergence. In complex traits such as CAM, the co‐option of associated traits strongly impacts the evolutionary outcome.
Thibaud F. E. Messerschmid   +4 more
wiley   +1 more source

Síntesis, estudio teórico de aril-lactonas y evaluación de su actividad inhibidora de la formación de β-hematina y de la enzima β-lactamasa

open access: yesRevista CENIC Ciencias Químicas, 2009
Las enfermedades infecciosas se han convertido en un problema de salud pública debido a la emergencia de la resistencia microbiana. Más de cinco millones de personas en Colombia viven en regiones endémicas de malaria cuyo parásito es resistente a ...
Consuelo Jaramillo Florez   +3 more
doaj  

Multidimensional Perspective on the Quality of Green Onion: Between the Visible, the Measurable, and the Perceived

open access: yesFood Science &Nutrition, Volume 14, Issue 2, February 2026.
This graphical abstract presents a five‐phase framework to define green onion quality by integrating literature evidence, physicochemical and bioactive data, digital trends, field damage observations, and consumer perception, providing a multidimensional and measurable quality assessment.
Leslie Walessa Castaño‐Tarazona   +2 more
wiley   +1 more source

Presencia de agroquímicos en ecosistemas acuáticos de zonas costeras y análisis preliminar del riesgo ambiental.

open access: yesUniciencia, 1998
En el período que va de 1992 a 1997, Costa Rica importó alrededor de 41 millones de kilogramos de i.a. La cantidad total de i.a. importada en 1997 es un 61% mayor que la importada en 1992. La cantidad de i.a.
Elba De la Cruz, Luisa Eugenia Castillo
doaj  

Nanopesticides, a real breakthrough for agriculture?

open access: yesRevista Bio Ciencias, 2017
The expansion of agriculture in the world has provoked, amongst others, the increase in the use of chemical substances for plague control. Scientific advances have shown that nanomaterials have innovative properties that can be used in the ...
Mendoza Cantú, A.
doaj   +1 more source

Functional characterization of NRT1/PTR FAMILY transporters: looking for a needle in a haystack

open access: yesNew Phytologist, Volume 249, Issue 3, Page 1124-1144, February 2026.
Summary NRT1/PTR FAMILY (NPF) transporters play crucial roles in plant physiology and development due to their involvement in nitrogen nutrition and their ability to transport multiple signaling molecules and metabolites. Whereas most eukaryotic and prokaryotic NPF orthologs are peptide transporters, most flowering plant NPF transport other substrates ...
Laura Morales de Los Ríos   +6 more
wiley   +1 more source

Wound healing activity of Ullucus tuberosus, an Andean tuber crop

open access: yesAsian Pacific Journal of Tropical Biomedicine, 2017
Objective: This study was designed to investigate the wound healing activity of aqueous extracts of Ullucus tuberosus (U. tuberosus) using in vitro models. Methods: Lyophilized pulp and acetone extracts of U.
Nathalie Heil   +4 more
doaj   +1 more source

Aphid parasitism alters induced plant responses allowing a hyperparasitoid to locate its hidden parasitoid host

open access: yesNew Phytologist, Volume 249, Issue 4, Page 2055-2070, February 2026.
Summary Plants typically host insect communities composed of multiple trophic levels that are intricately linked through interactions mediated by the shared food plant. Hyperparasitoids are top‐level carnivores in such systems, preying on parasitoid larvae developing inside herbivores. These hyperparasitoids can dramatically reduce the effectiveness of
Mitchel E. Bourne   +6 more
wiley   +1 more source

Home - About - Disclaimer - Privacy