Results 61 to 70 of about 21,740 (289)

Unveiling an Alternative Mechanism for Lewis Basic Selenium as a C─H Hydrogen Bond Catalyst and Its Application in the Halogenation of Arenes

open access: yesAngewandte Chemie, EarlyView.
This work demonstrates an unconventional mechanism in Lewis basic selenium‐catalyzed electrophilic halogenation, where in situ oxidation of selenourea by the halogen source generates hypervalent Se‐imidazolium species. These intermediates function as hydrogen‐bond catalysts to activate N‐haloamide reagents, enabling efficient and mild halogenation of ...
Jingxian Huang   +6 more
wiley   +2 more sources

Neonicotinoid Insecticide-Degrading Bacteria and Their Application Potential in Contaminated Agricultural Soil Remediation

open access: yesAgrochemicals
Recent advances in the microbial degradation of persistent organic pollutants have the potential to mitigate the damage caused by anthropogenic activities that are harmfully impacting agriculture soil ecosystems and human health.
Yuechun Zeng   +4 more
doaj   +1 more source

Assessing Agricultural Green Total Factor Productivity in Latin America

open access: yesAgribusiness, EarlyView.
ABSTRACT The agricultural sector in Latin America plays a vital role in ensuring food security while impacting the environment. However, there remains a lack of analysis regarding the inputs responsible for pollution within its sub‐technologies. Hence, this article aims to assess agricultural green total factor productivity (TFP) through a novel ...
Tianxiang Li   +2 more
wiley   +1 more source

Platinum‐Catalysed Hydrofluorination of Alkynes at Room Temperature Promoted by a Fluoride Shuttle

open access: yesAngewandte Chemie, EarlyView.
This work presents an air and moisture tolerant platinum‐catalysed hydrofluorination system that gives selectively (Z)‐fluoroalkenes. Experimental and computational investigation on the mechanism allowed for the identification of catalytic species. The hydrofluorination is mediated by complexes between the fluorinated anion and HF, resulting into BF3 ...
Ouchan He   +5 more
wiley   +2 more sources

Dicamba and 2,4-D in the Urine of Pregnant Women in the Midwest: Comparison of Two Cohorts (2010–2012 vs. 2020–2022)

open access: yesAgrochemicals
Currently, there are no known human biomonitoring studies that concurrently examine biomarkers of dicamba and 2,4-D. We sought to compare biomarkers of exposure to herbicides in pregnant women residing in the US Midwest before and after the adoption of ...
Joanne K. Daggy   +7 more
doaj   +1 more source

How Competitive Is Myanmar's Rice Sector? A Comparison of Production Costs and Efficiency

open access: yesAgribusiness, EarlyView.
ABSTRACT This paper analyzes the cost competitiveness of rice production in Myanmar by examining production costs, cost efficiency, and the potential effect of improving cost efficiency on the country's global competitiveness. To achieve this, we conduct a comparative analysis of production costs among major rice‐producing countries and estimate the ...
Nandar Aye Chan   +3 more
wiley   +1 more source

Iron‐Catalyzed Carbonylation Reactions with Carbon Monoxide

open access: yesAngewandte Chemie, EarlyView.
Recent developments in iron‐catalyzed carbonylative transformations using CO as a C₁ feedstock are summarized in this minireview. Reaction mechanisms of selected reactions and the potential for further advancements in this field are also discussed. Abstract The utilization of carbon monoxide (CO) as an inexpensive and indispensable C1 feedstock for the
Kangkang Sun   +3 more
wiley   +2 more sources

Antioxidant Activity of Essential Oils Extracted from Apiaceae Family Plants

open access: yesAgrochemicals
The importance of antioxidants has gained much attention due to the increase in the prevalence of various non-communicable diseases such as cancer, diabetes mellitus, and cardiovascular diseases, which occur due to excess reactive species. The widespread
Yasasvi Jayakodi   +5 more
doaj   +1 more source

New Discoveries in Agrochemicals [PDF]

open access: yes, 2004
Previously, the development of new agrochemicals has begun on the chemist's bench, screened via bioassays, and brought to the marketplace following field trials. Since the evolution of molecular, combinatorial and green chemistry techniques, our approach to new discoveries in agrochemicals has fundamentally changed.
Hideo Ohkawa, J. Marshall Clark
openaire   +2 more sources

Sustainability Strategies in the Cocoa‐Chocolate Value Chain: An Analysis Using Stakeholder Theory, Global Value Chain Theory, and Resource Dependence Theory

open access: yesAgribusiness, EarlyView.
ABSTRACT The cocoa‐chocolate value chain faces significant environmental and social challenges, driving firms to adopt sustainability strategies ranging from individual practices to third‐party certifications. This study investigates the factors associated with these strategies by analyzing 304 cocoa‐chocolate companies using firm‐level data from the ...
Stella Marschner   +3 more
wiley   +1 more source

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