Results 81 to 90 of about 5,243 (239)

INFRARED MATRIX ISOLATION STUDY OF THE REACTION OF $B_{2}H_{6} $ WITH $NH_{3}$ AND THE METHYLAMINES.

open access: yes, 1991
Author Institution: Department of Chemistry, University of CincinnatiThe reaction products arising from the pyrolysis of mixtures of $B_{2}H_{6} $ with $NH_{3}$ and the methylamines have been isolated and characterized in argon matrices at 14 K.
Carpenter, John D., Ault, Bruce S.
core   +1 more source

Assessment the sanitary-hygienic conditions of workplace air in chemical productions of petrochemical industry in Eastern Siberia

open access: yesActa Biomedica Scientifica, 2014
The article presents sanitary-hygienic assessment of the state of air environment of chemical industries of Eastern Siberia of production of methyl alcohol and methylamines, butyl alcohol by oxosynthesis, methyl-tert-butyl ether (MTBE).
N. A. Taranenko   +2 more
doaj  

The occurrence and biogeochemical cycling of quaternary, ternary and volatile amines in marine systems

open access: yesFrontiers in Marine Science
This review provides a critical assessment of knowledge regarding the occurrence and behaviour of volatile, low molecular weight amines, particularly methylamines and quaternary amines, in marine aquatic systems.
Mark F. Fitzsimons, Ruth Airs, Yin Chen
doaj   +1 more source

Probiotic modulation of symbiotic gut microbial–host metabolic interactions in a humanized microbiome mouse model

open access: yesMolecular Systems Biology, 2008
The transgenomic metabolic effects of exposure to either Lactobacillus paracasei or Lactobacillus rhamnosus probiotics have been measured and mapped in humanized extended genome mice (germ‐free mice colonized with human baby flora).
Francois‐Pierre J Martin   +13 more
doaj   +1 more source

Condensing the Cage: Novel Insights Into the Reaction Pathway of Isowurtzitane Cage Formation

open access: yesPropellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT In this contribution, we propose an alternative reaction pathway for the formation of isowurtzitane cages. These cage products are the basis for the synthesis of CL‐20, a highly prized energetic material and propellant. Isowurtzitane cages are typically formed under acid‐catalysed conditions via the condensation reaction between glyoxal and ...
Campbell S. Wolfe   +6 more
wiley   +1 more source

The continuing significance of chiral agrochemicals

open access: yesPest Management Science, Volume 81, Issue 4, Page 1697-1716, April 2025.
In the time frame 2018–2023, around 43% of the 35 chiral agrochemicals introduced to the market (herbicides, fungicides, insecticides, acaricides, and nematicides) contain one or more stereogenic centers in the molecule, and almost 69% of them have been marketed as racemic mixtures of enantiomers or stereoisomers.
Peter Jeschke
wiley   +1 more source

An improved multiphase chemistry mechanism for methylamines: significant dimethylamine cloud production

open access: yesnpj Climate and Atmospheric Science
Monomethylamine (MMA), dimethylamine (DMA), and trimethylamine (TMA) are important compounds for atmospheric key processes, e.g., new particle formation (NPF). A description of their multiphase chemical processing within atmospheric models is incomplete,
Erik H. Hoffmann   +2 more
doaj   +1 more source

Screening and Isolation of Bacterial Strains Able to Degrade Trimethylamine

open access: yesMicroorganisms
Methylamines are present in numerous organisms and microorganisms capable of de novo trimethylamine (TMA) production are widely distributed, including microalgae.
Sebastião V. T. F. de Almeida   +2 more
doaj   +1 more source

(Retracted) Forms, Importance and Sources of Dissolved Organic Nitrogen (DON) in the Environment: A Review [PDF]

open access: yesSVU-International Journal of Engineering Sciences and Applications
Dissolved organic nitrogen (DON) is an integral part of the dissolved organic carbon (DOC) reservoir, encompassing substances with nitrogen content. Within aquatic ecosystems such as lakes and rivers, DON molecules originate from photosynthetic entities ...
Md Redowan Rashid   +3 more
doaj   +1 more source

Revisiting small‐molecule fluorescent probes in food freshness detection

open access: yesSmart Molecules, EarlyView.
Fluorescent probes serve as versatile tools for food freshness monitoring. This review summarizes recent advances in probes targeting biogenic amines, hydrogen sulfide, pH values, and other key spoilage markers, highlighting their design principles, sensing mechanisms, and practical applications in food quality monitoring. Abstract Food spoilage driven
Xinrui Wang   +5 more
wiley   +1 more source

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