Results 21 to 30 of about 227,470 (164)

1,1‐Disubstituted Vinylbromides: Versatile Building Blocks for the Synthesis of Nitrogen‐Containing Heterocycles

European Journal of Organic Chemistry, EarlyView.
1,1‐Disubstituted vinylbromides are key intermediates for constructing nitrogen‐containing heterocycles. This review provides an overview of the synthetic applications of 1,1‐disubstituted vinylbromides and summarizes recent developments in reaction methodologies, mechanistic insights, and the structural diversity of N‐heterocyclic compounds accessible
Anne Westermeyer, Jun Fang, Chonghuo Liu, Guillaume Lefèvre, Gérard Guillamot, Phannarath Phansavath, Virginie Ratovelomanana‐Vidal   +6 more
wiley   +1 more source

Evaluación de feromona sexual microencapsulada en control de polilla de la manzana (Cydia pomonella L.) [PDF]

, 2004
34 p.La polilla de la manzana (Cydia pomonella L.) es la plaga de mayor incidenciaCeconómica en los huertos de pomáceas en Chile. Recientemente se ha desarrollado una nueva tecnología para su control, la cual consiste en utilizar microcápsulas con ...
Fuentes Contreras, Eduardo (Prof. Guía), Huerta Tudela, Mauricio Enrique   +1 more
core  

Eficacia de las medidas preventivas y evaluación del riesgo químico en una empresa avícola

Revista Colombiana de Salud Ocupacional, 2014
Objetivo: Elaborar un diagnóstico inicial de exposición a sustancias químicas en una empresa avícola del Valle del Cauca (Colombia) y un análisis de los medios técnicos de control y de vigilancia que tiene la empresa. Metodología: Estudio descriptivo
Francelly Sánchez, Johana Peláez
doaj   +1 more source

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

Journal of Surfactants and Detergents, EarlyView.
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, Raphael Ribeiro da Silva, João Pedro Gonçalves de Souza Soares, José Cavalcante de Queiroz Neto, Maria Eduarda Araújo Pessoa, Rafael Peixoto Alves, Fabiola Dias da Silva Curbelo   +6 more
wiley   +1 more source

Eficacia del control químico preventivo de Erwinia carotovora en maíz dulce regado por pivote [PDF]

, 2016
40 p.Con el fin de evaluar la efectividad de diferentes ingredientes activos, para el control de Erwinia carotovora en maíz, se realizó un ensayo en la localidad de San Carlos, región del Bio Bio.
González Hernández, Francisco Sebastián, Núñez Abarca, Fernanda Beatriz (Prof. Informante), Sandoval Briones, Claudio (Prof. Guía)   +2 more
core   +1 more source

Suppression of Lolium multiflorum Lam. with Vicia villosa Roth combined with residual herbicides

RIA: Revista Investigaciones Agropecuarias, 2022
Lolium multiflorum Lam. (raigrás anual) es una especie de maleza problemática, especialmente en los sistemas de labranza cero en el sur de Buenos Aires (Argentina).
J.P. Renzi, C. Pérez Aagaard, G.R. Chantre, R. Gigón, O. Reinoso, M. Quintana, I. Ducos, M.A. Cantamutto   +7 more
doaj  

Pretreatment Effects of Conventional and Reactive Extrusion on LLDPE Waste Pyrolysis

Polymer Engineering &Science, EarlyView.
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, Débora M. V. Miranda, Larissa L. A. Carvalho, Natasha K. Sitton, Ana Paula de Azeredo, Regina F. Nonemacher, Raquel S. Mauler, Luiz Eduardo P. Borges, José Carlos Pinto   +8 more
wiley   +1 more source

Efecto de la ceniza volcánica sobre la supervivencia de ortópteros en la Patagonia [PDF]

, 2015
El objetivo de este trabajo fue evaluar la toxicidad de las cenizas volcánicas del volcán Puyehue-cordón Caulle en la supervivencia de dos especies de Orthoptera: la tucura Dichroplus vittigerum y la langosta verde Brugilis sp.
Amadio, María Emilia, Becker, Guillermo, Bruzzone, Octavio Augusto, Enriquez, Andrea Soledad, Fernandez Arhex, Valeria Cristina, Pietrantuono, Ana Laura   +5 more
core  

Berberis microphylla: A species with phenotypic plasticity in different climatic conditions [PDF]

, 2018
Berberis microphylla G. Forst., commonly called as "calafate" produces small fruits with high content of carbohydrates, phenols and antioxidants. The objective of this work was to characterize the vegetative and reproductive cycle of Berberis microphylla
Alonso, Marta, Arena, Miriam Elisabet, Radice, Silvia   +2 more
core   +1 more source

Complex multitrophic species interactions and fitness costs: Intricate consequences of jasmonate and salicylate induced plant defences

Journal of Animal Ecology, EarlyView.
This study reveals how long‐term activation of jasmonic and salicylic acid signalling reshapes arthropod communities and plant fitness across seasons. By showing that induced defences generate contrasting outcomes and cascading trade‐offs across trophic levels, it challenges the assumption that induced resistance is uniformly beneficial in natural ...
Mônica F. Kersch‐Becker, Guilherme P. Pinheiro, Thaís S. Schweller, Martin Pareja, Victoria M. Pocius, José R. Trigo, Gustavo Q. Romero   +6 more
wiley   +1 more source