Results 81 to 90 of about 9,076 (227)
StructuraI correlation between soil humins and kerogens as seen by analyticaI pyrolysis [PDF]
, 1995 3 pages, 1 figure, 1 table, 10 references. Publicación incluida en: Select papers from the 17th International Meeting on Organic Geochemistry. 4-8/09/1995, San Sebastián, España.The possibility of the accumulation in soils of stable aliphatic materials ...
Almendros Martín, Gonzalo +3 more
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Heterogeneous Catalytic Transformations of Saccharides by Sn Lewis Acid: Recent Progress
ChemCatChem, Volume 18, Issue 2, 28 January 2026.The review addresses recent advances in heterogeneous catalytic transformations of lignocellulosic saccharides by tin‐containing materials. ABSTRACT Carbohydrates have been considered as important renewable substrates which are readily available in large quantities from waste streams.
Irina Delidovich
wiley +1 more source
Bioinorganic Chemistry and Applications, 2005 Batch and column experiments were performed to determine the Cu(II) binding capacity of silica-immobilized humin biomass. For column studies, 500 bed volumes of a 0.1 mM Cu(II) solution were passed through humin packed columns at the flow rates of 1, 1.5,
Jorge L. Gardea-Torresdey +3 more
doaj +1 more source
Untersuchungen zum Einsatz von Pflanzenstärkungsmitteln im ökologischen Futtererbsenanbau [PDF]
, 2005 There is a great requirement for cultivation of grain legumes (e.g. peas) in organic farming systems (protein supply for animals, biological nitrogen fixation, previous crop effects). The occurrence of pests and diseases, e.g.
Böhm, Dr. Herwart +2 more
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Optimasi Ekstraksi Asam Humat Dari Na-humat Dan Karakterisasinya Dengan Ftir [PDF]
, 2003 OPTlMASI EKSTRAKSI ASAM HUMAT DARI Na-HUMAT DAN KARAKTERISASINYA DENGAN FTIR. Telah dilakukan optimasi ekstraksi asam humat dari Na-humat dan karakterisasinya dengan FTIR.
Muzakky, M. (Muzakky) +2 more
core +2 more sources
Analusis, 1999 Our poor knowledge of the structure and formation of humic substances stems from the lack of suitable tools which enable the study of the molecular structure of these complex, yellow-brownish materials. Here, several findings using a combination of isotopic, pyrolytic, microscopic and gas chromatographic methods lead to the proposal of a novel model of
openaire +4 more sources
ChemCatChem, Volume 18, Issue 2, 28 January 2026.ABSTRACT The catalytic conversion of biomass‐derived sugars to 5‐hydroxymethylfurfural (5‐HMF) over zeolites is challenging due to internal mass transfer limitations arising from their microporous framework. To overcome this chronic issue, we prepared a set of micro‐mesoporous zeolites (22 samples), whose properties were fully characterized in our ...
Yuna Han +3 more
wiley +1 more source
The late holocene upper montane cloud forest and high altitude grassland mosaic in the Serra da Igreja, Southern Brazil. [PDF]
, 2015 Many soils of the highlands of Serra do Mar, as in other mountain ranges, have thick histic horizons that preserve high amounts of carbon. However, the age and constitution of the organic matter of these soils remain doubtful, with possible late ...
CURCIO, G. R. +2 more
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ChemElectroChem, Volume 13, Issue 1, January 2026.This study focuses on understanding the electro‐oxidative dehydrogenation (EOD) of aldehydes on copper foam electrodes. It examines how electrode morphology, substrate type and concentration, and electrolyte composition influence reaction pathways, efficiency, and side reactions, providing insights to guide catalyst design and optimize low‐potential ...
Sonja D. Mürtz +4 more
wiley +1 more source
Use of high-dimensional spectral data to evaluate organic matter, reflectance relationships in soils [PDF]
Recent breakthroughs in remote sensing technology have led to the development of a spaceborne high spectral resolution imaging sensor, HIRIS, to be launched in the mid-1990s for observation of earth surface features. The effects of organic carbon content
Baumgardner, M. F. +4 more
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