Results 111 to 120 of about 32,100 (229)

Catalytic Hydrogenation of Lignin‐Derived Aromatics With Rhodium Oxide in Water

open access: yesEuropean Journal of Organic Chemistry, Volume 29, Issue 14, 15 April 2026.
The easily available, easy‐to‐handle rhodium(III) oxide, Rh2O3, is shown to be a competent catalyst for arene hydrogenation, including chemoselective reduction of α,β‐unsaturated aryl ketones. Catalytic arene hydrogenation offers a direct pathway to saturated carbocycles. It can also be exploited to upgrade lignin‐derived aromatics.
Zhenyu Chen   +8 more
wiley   +1 more source

Detection of microbes in the subsurface [PDF]

open access: yes
The search for evidence of microbial life in the deep subsurface of Earth has implications for the Mars Rover Sampling Return Missions program. If suitably protected environments can be found on Mars then the instrumentation to detect biomarkers could be
Tunlid, Anders, White, David C.
core   +1 more source

Thermodynamic Aspects of Supercritical Fluids Processing: Applications of Polymers and Wastes Treatment Aspects thermodynamiques des procédés mettant en oeuvre des fluides supercritiques : applications aux traitements des polymères et des déchets

open access: yesOil & Gas Science and Technology, 2006
Supercritical fluid processes are of increasing interest for many fields : in supercritical fluid separation (petroleum-chemistry separation and purification, food industry) and supercritical fluid chromatography (analytical and preparative separation ...
Beslin P., Cansell F., Rey S.
doaj   +1 more source

Extraction, Characterization and Storage Stability of Oils from Selected Plant Seeds [PDF]

open access: yes, 2009
There is a great demand for renewable sources of raw materials that have nutritional and industrial potential. To meet the increasing demand for vegetable oils, improvements are being made with conventional crops as well as with selected plant species
Nyam, Kar Lin
core  

Extracción con Fluidos Supercríticos:Aplicaciones de Interés Farmacéutico [PDF]

open access: yes, 2018
Dentro del proceso de análisis de muestras, existen muchas técnicas yprocedimientos por las que se hacen pasar la muestra antes de realizar la determinación del analito. Las técnicas de separación son
Reyes Vargas, José
core  

NASA Thesaurus Supplement: A three part cumulative supplement to the 1982 edition of the NASA Thesaurus (supplement 2) [PDF]

open access: yes
The three part cumulative NASA Thesaurus Supplement to the 1982 edition of the NASA Thesaurus includes: part 1, hierarchical listing; part 2, access vocabulary, and part 3, deletions. The semiannual supplement gives complete hierarchies for new terms and

core   +1 more source

What Type of Research Is Done in the Laboratory of Pharmaceutical Analytical Chemistry of the University of Geneva?

open access: yesCHIMIA, 1997
This article presents briefly the main research projects developed in the Laboratory of Pharmaceutical Analytical Chemistry at the University of Geneva.
Jean-Luc Veuthey, Philippe Christen
doaj  

Supercritical fluid extraction (SFE) in environmental analysis [PDF]

open access: yes, 1997
This thesis deals with the use of supercritical fluid extraction (SFE) in environmental analysis. Traditionally SFE in environmental analysis has been used for quantitative extraction. In this thesis, quantitative extraction as well as other applications
Berglöf, Tomas
core  

Métodos de extração de hidrocarbonetos policíclicos aromáticos em amostra de solo, sedimento e lodo. [PDF]

open access: yes, 2011
bitstream/item/12265/1/documentos_79 ...
FERRACINI, V. L.   +2 more
core   +1 more source

Carbon-13 and proton nuclear magnetic resonance analysis of shale-derived refinery products and jet fuels and of experimental referee broadened-specification jet fuels [PDF]

open access: yes
A proton and carbon-13 nuclear magnetic resonance (NMR) study was conducted of Ashland shale oil refinery products, experimental referee broadened-specification jet fuels, and of related isoprenoid model compounds.
Bailey, B. K.   +2 more
core   +1 more source

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