Results 41 to 50 of about 27,159 (209)
Pengaruh tobacco specific nitrosamine terhadap karsinoma bronkogenik
JKS (Jurnal Kedokteran Syiah Kuala), 2008 Abstrak. 4-(methyl nitrosamino )-1-(3-pyridyl)- l-butanone (NNN) dan NNK merupakan metabolit dari Tooacco Specific Nitrosamine (TSNA) yang dihasilkan dari proses merokok dan kedua metabolit ini bersifal karsinogenik ...
MuJyadi MuJyadi
doaj
Oxydation de solutions d’acide iodhydrique par l’air en présence de lumière
CHIMIA, 1972 The reaction 4 HI + O2 →hν 2 H2O + I2 has been studied as a possibility of regeneration of the cathodic fuel in a cell using the cathodic reaction I2 + 2 e- → 2 I-.
A. Schlatter, E. Plattner, Ph. Javet
doaj +1 more source
Enantiopure Chiral Crystals: A Powerful Tool for Absolute Asymmetric Synthesis
Asian Journal of Organic Chemistry, Volume 14, Issue 8, August 2025.This review covers absolute asymmetric syntheses, which allow the preparation of enantiomerically enriched chiral compounds from achiral precursors. By exploiting the crystallization of certain compounds as a conglomerate, enantiopure chiral crystals are spontaneously obtained.
Jiacheng Li, Valérie Alezra
wiley +1 more source
Ökologische Untersuchungen zur Nitrifikation in Nord-und Ostsee [PDF]
, 1967 Ammonia, nitrite and nitrate were regularly estimated at several stations in the Kieler Bucht (western Baltic Sea) since November 1964. There are considerable seasonal changes in the contents of these 3 nitrogen compounds with impressive maxima of ...
C. E. Zobell +15 more
core +1 more source
Étude théorique d'un mécanisme de co-oxydation Theorical Analysis of Cooxidation Mechanism
Oil & Gas Science and Technology, 2006 L'étude théorique de la co-oxydation de deux substances oxydables RH et R'H est effectuée systématiquement à partir d'un schéma cinétique général et en envisageant successivement les différents cas possibles. Dans cette étude, on admet que RH s'oxyde, en
André J.-C., Baronnet F., Lemaire J.
doaj +1 more source
Jurnal Kimia Sains dan Aplikasi, 2018 This study aims to determine the mass of zeolite and charcoal required as lime nutrient adsorbent (Ca(OH)2) in reducing pH, TSS, COD, and SV values in tubs of oxidation of ditches I and II in Water Treatment and Composting Plant (WTCP) PT.
Rissa Kharismawati +2 more
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International Journal of Cosmetic Science, Volume 47, Issue 4, Page 604-625, August 2025.The protein carbonylation biomarker is validated as reliable molecular damage marker to monitor hair oxidative damage (chemical and photo oxidation). It is slightly more sensitive than the cysteic acid in the case of photochemical oxidation and allows to geolocate qualitatively and quantitatively the oxidation within the hair fibre substructures ...
Camille Grosjacques +5 more
wiley +1 more source
Oxydation de Fe2+ par O3 en réacteur semi-continu parfaitement agité
CHIMIA, 1972 Ferrous ion oxidation by ozonised air was carried out in a laboratory well-mixed semi-flow batch reactor. Ozone transfer is shown to proceed according to Astarita’s fast reaction regime. Experimental data are compared to figures obtained by means of the
André Schreiber
doaj +1 more source
Journal of Advances in Modeling Earth Systems, 2019 Permafrost soils and arctic wetlands methane emissions represent an important challenge for modeling the future climate. Here we present a process‐based model designed to correctly represent the main thermal, hydrological, and biogeochemical processes ...
X. Morel +6 more
doaj +1 more source
Biotropica, Volume 57, Issue 3, May 2025.Shade houses serve as effective scientific tools for ex situ cultivation and orchid conservation in tropical forests. A comparison of the floral scent chemistry of Cyrtorchis letouzeyi between shade houses and natural populations in Cameroon revealed the same dominant compound, identical qualitative compositions across sites, but variations in emission
Kamga Lydie Messado +4 more
wiley +1 more source