Results 141 to 150 of about 746,394 (372)

Molecular study of lipids in humic acids by sequential chemical degradation [PDF]

open access: yes, 2009
Lipidy v půdě vykazují poměrně vysokou resistenci k biodegradaci, mohou proto tak zajistit informace o zdrojích organické hmoty a diagenetických procesech. Půdní organická hmota je vysoce heterogenní a vyskytují se v ní různé dynamické systémy.
Bachratá, Radka
core  

High‐Performance Field‐Effect Transistors and Phototransistors Array Based on Solution‐Processed Quasi‐1D Van der Waals Ta2Pd3S8 Crystals

open access: yesAdvanced Functional Materials, EarlyView.
Herein, the synthesis of Ta₂Pd₃S₈ nanowires is reported via scalable liquid cascade exfoliation and their integration into high‐mobility field‐effect transistors (FETs) and sensitive photodetectors, achieving carrier mobility of up to 27.3 cm2 V⁻¹ s⁻¹ and responsivities of 322.40 A W⁻¹ and 1.85 mA W⁻¹ for single nanowire and network devices ...
Kyung Hwan Choi   +13 more
wiley   +1 more source

CHLOROFORM AS AN ANÆSTHETIC. [PDF]

open access: yesJournal of the American Medical Association, 1886
While interne in the Long Island College Hospital fifteen years ago I had many excellent tutors; taken all in all the faculty as a whole seemed to me the personification of wisdom and professional enthusiasm. On one point, however, there was a serious breach of harmony: one used chloroform, one ether, another a mixture of the two, with or without ...
openaire   +2 more sources

The Influence of the Structure of Organochlorine Compounds on Their Decomposition Process in a Dielectric Barrier Discharge

open access: yesReactions
The decomposition efficiency of C2HCl3 and CHCl3 in a barrier discharge is very different, even though these compounds differ little in chemical composition. In both compounds, there are three chlorine atoms and one hydrogen atom.
Bogdan Ulejczyk
doaj   +1 more source

Extractive Differential Pulse Polarography of Mo (VI) Oxinate in Chloroform and its Application in the Determination of Molybdenum in Steel [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2003
The voltammetric characteristics of Mo (VI) oxinate at the mercury electrode, in the presence of tri-butylammonium perchlorate (tri-BAP) and piperidinium perchlorate (PP) + piperidine (P) as  two different types supporting electrolytes, have been studied
Mohammad Hossein Pournaghi-Azar   +1 more
doaj  

New isoquinoline alkaloid from Carduus crispus L.

open access: yesMongolian Journal of Chemistry, 2014
A new isoquinoline alkaloid, along with other known 4 bioactive compounds (1 isoquinoline alkaloid, 2 flavonoids, 1 coumarin), were isolated from the ethanol extract of aerial parts of Carduus crispus L.
J Tunsag, G Davaakhuu, D Batsuren
doaj   +1 more source

Covalent Adaptable Networks with Associative Siloxane Exchange Enabled by Amide‐Based Internal Catalysis: Designing for Reprocessability and Extrudability by Increasing the Cross‐Link Density

open access: yesAdvanced Functional Materials, EarlyView.
Internally catalyzed siloxane dynamic chemistry is demonstrated resulting from amides covalently linked through alkyl chains to siloxanes. The alkyl length in the siloxane‐containing monomer tunes the network cross‐link density. Siloxane exchange dynamics are faster with increasing cross‐link density, because associative exchange is second order in ...
Nathan S. Purwanto   +5 more
wiley   +1 more source

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