Results 91 to 100 of about 265,312 (219)

Pesticide studies of tropical fruits with GC-ECD, GC-PFPD, GC-MS and LC-MS

open access: yes, 2014
A dolgozatom során megvizsgálom a citrusféléknél leggyakrabban alkalmazott hatóanyagok megoszlását a húsban és héjban négy különböző műszeres analitikai módszerrel (GC-PFPD, GC-ECD, GC-MS, LC-MS).
Ficsór, Lívia
core  

Heterociklusok oldat és szilárd ECD spektrumának számítása, abszolút konfigurációjuk meghatározása

open access: yes, 2015
A kvantummechanika segítségével képesek vagyunk számítógépes számítások által, különböző molekulák elektronátmeneteihez kapcsolódó rotátorerősségek és ezekből az ECD spektrumok számítására. Az ily módon számított spektrum azonos vagy tükörképi egyezése a
Váradi, Dániel
core  

Pyrethroids residues analysis in Indonesian commercial tea by GC-ECD

open access: yesAIMS Agriculture and Food, 2019
Monitoring of pesticides residue including pyrethroids is required since they are major contaminants in tea and have been regulated in European Union and countries such as China, Australia, Japan and America. This study aimed to analyze several pyrethroids in Indonesian commercial tea.
Mariska Margaret Pitoi   +3 more
openaire   +2 more sources

Polycaprolactone‐Based Bicontinuous Structures Stabilized by Nanoparticles as Selective Pesticide Delivery Systems in Agriculture

open access: yesParticle &Particle Systems Characterization, Volume 43, Issue 6, June 2026.
The specificity of the delivery system developed was then tested with plants, using an atrazine target plant (Brassica sp.) and a non‐target one (Zea mays). The results obtained demonstrate that controlled treatments based on atrazine loaded bijels can reduce the growing conditions only in target plants with higher performances respect to plants ...
Fabio Pizzetti   +4 more
wiley   +1 more source

A Meta‐Analysis of the Effects of Acute Sleep Deprivation on the Cortical Transcriptome in Rodent Models

open access: yesJournal of Sleep Research, Volume 35, Issue 3, June 2026.
How does sleep deprivation affect the brain? We performed a meta‐analysis of publicly available transcriptional profiling datasets characterising the effects of sleep deprivation on cortical gene expression (n = 293 mice, 16,290 genes) and validated our results in an independent sample (n = 222 mice).
Cosette A. Rhoads   +8 more
wiley   +1 more source

Investigation of directly suspended droplet micro extraction method for extraction of trihalomethane and halomethane in water samples

open access: yesEgyptian Journal of Petroleum, 2018
Simple and efficient directly suspended droplet micro extraction (DSDME) in conjunction with gas chromatography-electron capture detector (GC-ECD) has been developed for extraction and determination of Halomethane and Trihalomethane from water samples ...
Seyed Kamal Rajabi, Ahmad Nikserasht
doaj   +1 more source

Update of the risk assessment on dioxins and dioxin‐like PCBs in feed and food

open access: yesEFSA Journal, Volume 24, Issue 6, June 2026.
Abstract The European Commission asked EFSA to update its 2018 risk assessment on polychlorinated dibenzo‐p‐dioxins and dibenzofurans (PCDD/Fs) and dioxin‐like polychlorinated biphenyls (DL‐PCBs) in feed and food, based on the 2022 WHO Toxic Equivalency Factors (WHO2022‐TEFs).
EFSA Panel on Contaminants in the Food Chain (CONTAM Panel)   +27 more
wiley   +1 more source

VALIDAÇÃO DE MÉTODO PARA DETERMINAÇÃO DE PESTICIDAS DA SOJA EM ÁGUAS SUBTERRÂNEAS POR GC-ECD

open access: yesRevista Águas Subterrâneas, 2009
Devido ao continuo crescimento da produção de soja no Brasil, aumenta-se a preocupação em relação à possível contaminação de solo e água subterrânea pelo uso de agrotóxicos para combate a pragas do cultivo da soja.
Cristina Gonçalves   +5 more
doaj  

A rapid method for the extraction and determination of vitamin E metabolites in human urine

open access: yesJournal of Lipid Research, 2000
A method for the direct extraction and routine analysis of the vitamin E metabolites γ- and α-carboxyethyl hydroxychroman (γ- and α-CEHC) from human urine has been developed.
John K. Lodge   +3 more
doaj   +1 more source

Optimization of QuEChERS procedure coupled to GC-ECD for organochlorine pesticide determination in carrot samples

open access: yes, 2013
An optimised version of the Quick, Easy, Cheap, Effective, Rugged and Safe (QuEChERS) method for simultaneous determination of 14 organochlorine pesticides in carrots was developed using gas chromatography coupled with electron-capture detector (GC ...
Domingues, Valentina F.   +8 more
core   +1 more source

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