Results 21 to 30 of about 13,982 (164)

Liquid‐phase oxidation of furfural catalyzed by magnetically separable metal oxide nanoparticles deposited on silica gel

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract Oxidation of furfural (FF), a bio‐based platform chemical, was investigated using a range of iron‐, vanadium‐ and iron–zinc‐oxalates supported on silica gel (FeVOx@silica and FeZnOx@silica, respectively) as precursor for FeV@silica and FeZn@silica oxide catalysts and H2O2 as a green oxidant.
Alexander Pokutsa, Alina Mariana Balu, Rafael Luque   +2 more
wiley   +1 more source

Control químico de malas hierbas [PDF]

, 1962
Las malezas o malas hierbas, métodos de lucha contra las malas hierbas, control químico de malas hierbas, herbicidas inorgánicos, herbicidas orgánicos, aplicación de los herbicidas, el uso de herbicidas en áreas cultivadas, otros usos de los ...
Gómez Obando, Humberto
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Sunlight‐Driven Green Synthesis of Platinum Nanoparticles From Double‐Vacancy Halide Perovskite Precursors for Methanol Reforming

Chemistry – A European Journal, EarlyView.
ABSTRACT The development of synthetic procedures for preparing metal nanoparticles with controlled size using sunlight opens new avenues toward more sustainable methods with lower energy consumption. Herein, we propose the use of double‐vacancy halide perovskites as precursors for engineering highly crystalline and small platinum nanoparticles (< 3 nm)
Kevin Mego, Saray Chacón‐Ruiz, Pedro Ruiz‐Campos, Herme G. Baldoví, Pedro Atienzar   +4 more
wiley   +1 more source

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

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  

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

Decoupling Formulation and Processing Effects in Thermoplastic Starch Through a Data‐Driven Structure–Property Framework

Polymer Engineering &Science, EarlyView.
Processing‐property relationships in thermoplastic starch (TPS): plasticizer type, starch source and melt‐processing temperature establish a hierarchy of effects that governs process‐induced changes and the resulting TPS properties. ABSTRACT Thermoplastic starch (TPS) is a melt‐processable biopolymer whose properties depend strongly on formulation and ...
Cristina Pavón, Nerea Martínez, Alexandra Llidó Barragán, Juan López‐Martínez   +3 more
wiley   +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

New Labor Governance? The German Supply Chain Act and National Governance Mechanisms in Brazil

Regulation &Governance, EarlyView.
ABSTRACT Due diligence laws respond to labor governance challenges and to a lack of public governance addressing human rights violations in Global Value Chains. Despite ongoing contestation, the German Supply Chain Due Diligence Act seeks to hold German‐based firms accountable for human rights risks in their supply chains.
Helena Gräf
wiley   +1 more source

Control interno en las cuentas por cobrar en el Colegio Químico Farmacéutico del Perú, Surco 2021 [PDF]

, 2022
La presente investigación tiene como objetivo fue determinar el control interno que incide en las cuentas por cobrar en el Colegio Químico Farmacéutico del Perú, Surco 2021.
Torres Huanca, Eliseo
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