Results 71 to 80 of about 232,788 (284)

Dual Ligand‐Enabled Nondirected C─H Olefination of (Hetero)Arenes for the Synthesis of Clickable Derivatives

open access: yesChemistry – A European Journal, EarlyView.
We report an efficient method for late‐stage installation of “clickable” alkyne groups into diverse (hetero)arenes. Using a dual‐ligand palladium catalyst that combines an NASA ligand with an N‐heterocycle, an acrylate unit bearing a terminal alkyne can be introduced via nondirected C─H activation.
Tommaso Braga   +2 more
wiley   +1 more source

Spray volumes in the industrial treatment on the physiological quality of soybean seeds with different levels of vigor

open access: yesJournal of Seed Science
: The aim of this work was to evaluate the effect of different spray volumes, via industrial treatment, on the physiological quality of soybean seeds with different levels of vigor. The experimental design was completely randomized in a 2x5 factor scheme,
Cristian Rafael Brzezinski   +6 more
doaj   +1 more source

EFFECTS OF ATROPINE SULFATE AFTER POISONING WITH ORGANOPHOSPHORUS COMPOUNDS [PDF]

open access: yesJournal of Process Management and New Technologies, 2013
Organophosphorus compounds are most toxic synthesized substances. This group consists of the substances used in the composition of chemical weapons. Less toxic substances in this group are used as insecticides. These compounds are inhibitors of the
Milena Nikolić, Mladen Nikolić
doaj  

The efficacy of some synthetic monoterpenes and Yucca extract for controlling Tribolium castaneum (Herbst) in wheat grain [PDF]

open access: yesJournal of Plant Protection Research
The study’s objective was to assess the efficacy and to identify the toxic mechanisms of action of some plant-derived monoterpenes and yucca extract as alternatives to chemical insecticides against the red flour beetle, Tribolium castaneum.
Aly Derbalah   +5 more
doaj   +1 more source

Residue Analysis of Insecticides in Potatoes by QuEChERS-dSPE/UHPLC-PDA

open access: yesFoods, 2020
Insecticides are broadly applied in agriculture to defend crops from illnesses and pest attacks, consequently guaranteeing high production. However, their residual deposits in food products are becoming a main concern with regard to human consumption. As
Débora Reis   +3 more
doaj   +1 more source

Innovative electrospun geopolymer/zeolite/PVA composite membranes

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Proposed scheme of gas adsorption mechanisms on electrospun geopolymer/zeolite/PVA composite membranes. Abstract Innovative electrospun poly(vinyl alcohol) (PVA)–geopolymer–zeolite 13X composite membranes were successfully fabricated and systematically characterized.
Mariana Schneider   +7 more
wiley   +1 more source

Western corn rootworm pyrethroid resistance confirmed by aerial application simulations of commercial insecticides [PDF]

open access: yes, 2019
The western corn rootworm (Diabrotica virgifera virgifera LeConte) (WCR) is a major insect pest of corn (Zea mays L.) in the United States (US) and is highly adaptable to multiple management tactics.
Fritz, Bradley K.   +6 more
core   +1 more source

Abundance and Identification of the Leafmining Guild on Apple in the Mid-Atlantic States [PDF]

open access: yes, 2017
The leafmining guild on apple in the northeastern United States was studied from 1983 to 1988. Ten species of leafminers, all Lepidoptera, were encountered during the sampling. Phyllonorycter spp. (P. blancardella and P.
Brown, M. W
core   +2 more sources

Nanofiber PVA‐Based Membranes Incorporating Functionalized Spanish Broom Derivatives for Sustainable Water Purification

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This study investigates Spanish broom (Spartium junceum) as a renewable source for electrospun composite membranes in sustainable water purification. MCC and biochar were functionalized with eco‐friendly precursors and nanomaterials (i.e., HNT, β‐CDs) to develop hybrid PVA nanofiber composites.
Giulia Rando   +7 more
wiley   +1 more source

Resistance status of the carmine spider mite, Tetranychus cinnabarinus and the twospotted spider mite, Tetranychus urticae to selected acaricides on strawberries. [PDF]

open access: yes, 2015
The carmine spider mite, Tetranychus cinnabarinus (Boisduval) and the twospotted spider mite, Tetranychus urticae Koch, are serious pests of strawberries and many other horticultural crops.
Bi, Jian-Long   +3 more
core   +1 more source

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