Results 31 to 40 of about 28,390 (226)

LiVGe2O6, an anomalous quasi 1D, $S = 1$ system, as revealed by NMR

open access: yes, 2000
We report the results of $^{7}$Li nuclear magnetic resonance (NMR) studies of LiVGe$_{2}$O$_{6}$, a quasi one--dimensional spin $S = 1$ model system, at low temperatures.
Gavilano, J. L.   +4 more
core   +1 more source

Etude de la dégradation de quelques composés organochlorés volatils par photolyse du peroxyde d'hydrogène en milieux aqueux [PDF]

open access: yes, 1988
Le travail a eu pour but d'étudier l'efficacité de la photolyse du peroxyde d'hydrogène sur la dégradation de quelques composés organochlorés aliphatiques saturés (chiorométhanes et chloroéthanes) en milieu aqueux (pH 7,5).
De Laat, J.   +4 more
core   +1 more source

π‐Expanded BODIPYs and Related Analogs as Long‐Wavelength Absorbing Photosensitizers for Green Energy Conversion

open access: yesChemNanoMat, Volume 12, Issue 1, January 2026.
The versatile modification capability of BODIPYs and the related analogs with excellent photophysical properties allows chemists to propose photosensitizers applicable to energy‐related materials. This review mainly focuses on the π‐extension strategy for achieving sunlight‐harvesting capabilities. The insights and challenges for future research on red
Yuji Kubo, Masato Ito
wiley   +1 more source

Utilisation des lipides : oxydation ou stockage ?

open access: yesOléagineux, Corps gras, Lipides, 2008
The stability of body weight and composition requires an equilibrium between the intakes and outputs of energy and macronutrients. Fat mass depends on the equilibrium between the input and output of lipid but also on the metabolic fate of lipids ...
Beylot Michel
doaj   +1 more source

Reaktivität von Koordinationsverbindungen XX : Redoxverhaiten von Oxo-3,5-disulfobrenzcatechinato-vanadium(V)

open access: yesCHIMIA, 1969
The oxydation of pyrocatechole-3,5-disulfonic acid by vanadium(V) in acidic solution has been studied spectrophotometrically. Analysis of kinetic data suggests two parallel reaction paths: (a) An initially formed intensely coloured VO2+ substrate ...
D. Braun-Steinle, S. Fallab
doaj   +1 more source

The Superconducting Proximity Effect as a Tool to Investigate Metal Films and Interfaces

open access: yes, 2004
052The superconducting proximity effect is measured in sandwiches of thin Pb films and the alkali metals Cs, Rb, K and Na. The $T_{c}$-dependence provides information about the interface barriers between Pb and the alkalis.
Ashida   +26 more
core   +1 more source

Oxydation d'un acide humique aquatique par le bioxyde de chlore. Incidences sur une post-chloration et sur un traitement au charbon actif [PDF]

open access: yes, 1990
Cette étude de laboratoire a eu pour but d'examiner la réactivité du bioxyde de chlore sur un acide humique d'origine aquatique en solution aqueuse et en milieu neutre (pH = 7,5) et de préciser en particulier l'incidence d'une préoxydation chimique au ...
Ben Amor, H., De Laat, J., Doré, M.
core   +1 more source

Modelling the Impact of Drained and Undrained Conditions on GHG Emissions in Croplands: A Case Study in Lincolnshire, UK

open access: yesIrrigation and Drainage, Volume 74, Issue 4, Page 1751-1765, October 2025.
ABSTRACT Agricultural drainage plays a crucial role in land management and crop productivity but significantly impacts greenhouse gas (GHG) emissions. This study examines the effects of drained and undrained soil conditions on GHG emissions in croplands via a case study in Lincolnshire, United Kingdom.
Talha Özçelik, Matthias Kuhnert
wiley   +1 more source

Ultra high resolution stepper motors design, development, performance and application [PDF]

open access: yes, 1979
The design and development of stepper motors with steps in the 10 arc sec to 2 arc min range is described. Some of the problem areas, e.g. rotor suspension, tribology aspects and environmental conditions are covered.
Moll, H., Roeckl, G.
core   +1 more source

Oxydation du diuron et identification de quelques sous-produits de la réaction [PDF]

open access: yes, 1999
Ce travail étudie la dégradation en milieu aqueux de l'herbicide diuron (N-(3,4 dichlorophényl)-N'-(diméthyl)-urée) par oxydation radicalaire. Des solutions de diuron (0,01 mg L-1 et 5 mg L-1) tamponnées à pH=7 ont été traitées par l'ozone et par le ...
Ramirez Zamora, R. M., Seux, R.
core   +3 more sources

Home - About - Disclaimer - Privacy