Results 61 to 70 of about 9,389,724 (153)

Potes fumígenos, ovitrampas y otras herramientas con bajo impacto ambiental para controlar vinchucas y mosquitos

open access: yesRevista de Salud Ambiental, 2022
La chinche Triatoma infestans (conocida en Argentina como “vinchuca”) y cuatro especies de mosquitos (Aedes aegypti, Culex pipiens quinquefasciatus, Anopheles pseudopunctipennis y An. darlingi) son los principales insectos vectores de enfermedades en el
Mercedes M.N. Reynoso   +10 more
doaj  

Soil Microbiota and Rhizosphere Dynamics: Ecological Mechanisms Driving Crop Stress Adaptation in Climate‐Smart Agriculture

open access: yesFood and Energy Security, Volume 15, Issue 4, July/August 2026.
ABSTRACT Climate change‐mediated abiotic stresses limit crop performance, and plant responses are increasingly recognized as emergent properties of the coupling between soil, plants, and microbiomes rather than inherent plant characteristics. This review synthesizes mechanistic evidence from 2020 to 2025 on how rhizosphere microbiota contribute to crop
Alaba Adewole Adebayo   +5 more
wiley   +1 more source

Amidst centralized and distributed frequency control in power systems

open access: yes, 2016
We propose a novel frequency control approach in between centralized and distributed architectures, that is a generalized continuous-time feedback control version of the dual decomposition optimization method.
GRAMMATICO, SERGIO   +7 more
core   +1 more source

Efecto de Beauveria bassiana, Beauveria brongniartii y la aplicación de gasoil en el control de moscas caseras en galpones avícolas

open access: yesAIA Avances en Investigación Agropecuaria, 2009
Se realizó un experimento en el estado Trujillo, Venezuela, con el objetivo de evaluar en condiciones de campo la patogenicidad de Beauveria bassiana y Beauveria brongniartii (cepa: LF- 08 y LF-05, respectivamente) en comparación con la práctica común de
L. J. Cova   +6 more
doaj  

The Antiproliferative Effect of Cyclodipeptides from Pseudomonas aeruginosa PAO1 on HeLa Cells Involves Inhibition of Phosphorylation of Akt and S6k Kinases

open access: yesMolecules, 2017
Pseudomonas aeruginosa PAO1, a potential pathogen of plants and animals, produces the cyclodipeptides cyclo(l-Pro-l-Tyr), cyclo(l-Pro-l-Phe), and cyclo(l-Pro-l-Val) (PAO1-CDPs), whose effects have been implicated in inhibition of human tumor cell line ...
Laura Hernández-Padilla   +8 more
doaj   +1 more source

Microemulsion‐Based Drilling Fluids Incorporating Seashell Residue Powder: A Sustainable Approach to Fluid Loss Control

open access: yesJournal of Surfactants and Detergents, Volume 29, Issue 4, Page 537-547, July 2026.
Two microemulsion‐based drilling fluids incorporating SSRP were formulated using pine oil, the nonionic surfactant Alkonat L100W, and a glycerol/water solution. The results provide valuable insights into how surfactant‐assisted microemulsion systems can be engineered to enhance the performance and eco‐efficiency of drilling fluids.
Luara Ribeiro Viana   +6 more
wiley   +1 more source

Diseño e implementación de una secuencia didáctica para la enseñanza del concepto de elemento químico

open access: yesPraxis & Saber, 2020
Este estudio propone la implementación de una secuencia didáctica basada en el modelo de aprendizaje como investigación orientada, para la enseñanza del concepto de elemento químico en la educación secundaria.
Dulce María López
doaj   +1 more source

Pretreatment Effects of Conventional and Reactive Extrusion on LLDPE Waste Pyrolysis

open access: yesPolymer Engineering &Science, Volume 66, Issue 7, Page 5191-5199, July 2026.
Schematic overview of the pyrolysis study using original and pretreated LLDPE waste samples. Pretreatment was performed via twin‐screw extrusion at 450°C: without additives (REX), with peroxide (REX‐RO2), or with polypropylene (REX–PP). All four samples underwent pyrolysis at 450°C–475°C for 15–45 min.
Yasmin Fialho Siqueira   +8 more
wiley   +1 more source

Ludo Químico

open access: yes, 2014
Ensino Médio::QuímicaLudo Químico é um jogo de química, que possui um tabuleiro mostrando um caminho que será percorrido no decorrer das jogadas com o dado, podendo passar pelos quadrinhos sem responder as perguntas ou respondendo corretamente as ...
Guerreiro, Manuel
core  

Desempenho global do complexo químico no Brasil [PDF]

open access: yes, 1995
Periodicidade: irregularData de início e fim da coleção na biblioteca: 1994-1998Equipe técnica responsável: José Eduardo Pessoa de Andrade, Flávia Cruz EstevesO presente trabalho destaca o desempenho do complexo químico, focalizando dados globais de ...

core   +1 more source

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