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Mostrando ítems 1121-1130 de 1960
Meroterpenes from Peperomia oreophila Hensch. and Peperomia arifolia Miq.
(Sociedade Brasileira de Química, 2012-04-01)
One new meroterpene, 4-[(2'E)-3',7'-dimethylocta-2',6'-dien-1'-yl]-5-methyl-2-(3‑methylbut-2-enyl)-benzene-1,3-diol, together with eight known compounds, was isolated from the MeOH extract from the leaves of Peperomia ...
Effects of Micelles and Vesicles on the Oximolysis of p-Nitrophenyl Diphenyl Phosphate: A Model System for Surfactant-Based Skin-defensive Formulations against Organophosphates
(JOHN WILEY & SONS INC, 2009)
The rates of oximolysis of p-nitrophenyl diphenyl phosphate (PNPDPP) by Acetophenoxime; 10-phenyl-10-hydi-oxyiminodecanoic acid; 4-(9-carboxynonanyl)-1-(9-carboxy-1-hydroyiminononanyl) benzene; 1-dodecyl-2-[(hydroxyimino ...
Heated tobacco products: Volatile emissions and their predicted impact on indoor air quality
(American Chemical Society, 2019-07-02)
This study characterized emissions from IQOS, a heated tobacco product promoted as a less harmful alternative to cigarettes. Consumable tobacco plugs were analyzed by headspace GC/MS to assess the influence of heating ...
Análise da biorremediação de compostos monoaromáticos em água através da pseudomonas aeruginosa
(Universidade Federal do Rio Grande do NorteBrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM ENGENHARIA QUÍMICA, 2016-01-29)
The monoaromatic compounds are toxic substances present in petroleum
derivades and used broadly in the chemical and petrochemical industries. Those
compounds are continuously released into the environment, contaminating ...
Direct C-H metalation with chromium(ii) and iron(ii): transition- metal host/benzenediide guest magnetic inverse-crown complexes
(Wiley VCH Verlag, 2009-04)
Check M(etal)ate: The chessboard and the figures represent a special reaction in which different low-polarity metals can metalate arenes directly when they are brought into the right position. In a combination of queen ...
Thermal and mechanical properties of nanocomposites based on a PLLA-b-PEO-b-PLLA triblock copolymer and nanohydroxyapatite
(Wiley, 2016-08-16)
Composites which combine biocompatible polymers and hydroxyapatite are unique materials with regards to their mechanical properties and bioactivity in the development of temporary bone-fixation devices. Nanocomposites based ...
Preparación de un potencial inhibidor de la corrosión tipo 1,2:5,6‐diisopropiliden‐ α ‐D‐glucofuranosil‐triazol‐bencilo
(Universidad Autónoma Metropolitana (México). Unidad Azcapotzalco. División de Ciencias Básicas e Ingeniería., 2022)
Los inhibidores orgánicos de corrosión han sido usados en la industria debido a su alta efectividad a un amplio rango de temperaturas y compatibilidad con materiales protegidos, un grupo importante en química orgánica son ...
Adsorción de dióxido de carbono en redes metal orgánicas de terbio
(Universidad Autónoma Metropolitana (México). Unidad Azcapotzalco. División de Ciencias Básicas e Ingeniería., 2021)
Los materiales tipo MOF (metal organic frameworks) tienen características fisicoquímicas modulables y son capaces de adsorber el CO₂, actúan como una especie de esponjas a escala molecular, cuyo tamaño de poros se define ...
Geochemical indicators of contamination by volatile organic compounds in groundwater on Lucaia's River Basin, Salvador, Bahia, BrazilIndicadores geoquímicos de contaminação por compostos orgânicos voláteis em águas subterrâneas da Bacia do Rio Lucaia, Salvador, Bahia
(Sociedade Brasileira de Geologia, 2012)
Síntese e caracterização estrutural de pirazolinil-tolil-sulfonas trialometil substituídas de interesse antimicrobiano
(Universidade Federal de Santa MariaBRQuímicaUFSMPrograma de Pós-Graduação em Química, 2006-02-02)
The present research describes the use of b-alcoxyvynil
trihalomethyl ketones [CX3C(O)CR2CR1R, where X= Cl, F; R= OMe, OEt; R1: H, Me, Ph, 4-MePh, 4-MeOPh, 4-BrPh, 4-ClPh, 4-FPh; R2= H, Ph] in the regiospecific synthesis ...