Results 21 to 30 of about 5,463,250 (252)

Pyrolysis of Municipal Sewage Sludge to Investigate Char and Phosphorous Yield together with Heavy-Metal Removal—Experimental and by Thermodynamic Calculations

open access: yesEnergies, 2021
Sewage sludge is regarded as a potential source for soil fertilizer However, the direct utilization of sewage sludge in agricultural land is restricted since it also contains heavy metals, pathogens, and toxic compounds.
Naeimeh Vali   +4 more
doaj   +1 more source

Recent advances in high-temperature fractionation of polyolefins

open access: yes, 2022
S.77-140The synthesis and characterization of polyolefins continues to be one of the most important areas for academic and industrial research. One consequence of the development of new ""tailor-made"" polyolefins is the need for new and improved ...
Macko, Tibor   +2 more
core   +1 more source

Copper isotope evidence for large-scale sulphide fractionation during Earth’s differentiation [PDF]

open access: yes, 2015
The differentiation of Earth into a metallic core and silicate mantle left its signature on the chemical and isotopic composition of the bulk silicate Earth (BSE).
Savage, P.S.   +7 more
core   +1 more source

Base specific fractionation of double stranded DNA: affinity chromatography on a novel type of adsorbant [PDF]

open access: yes, 1978
Bünemann H, Müller W. Base specific fractionation of double stranded DNA: affinity chromatography on a novel type of adsorbant. Nucleic Acids Research.
Werner Mliller   +4 more
core   +1 more source

Carbon isotope fractionation during aerobic biodegradation of trichloroethene by Burkholderia cepacia G4: a tool to map degradation mechanisms [PDF]

open access: yes, 2002
The strain Burkholderia cepacia G4 aerobically mineralized trichloroethene (TCE) to CO2 over a time period of similar to20 h. Three biodegradation experiments were conducted with different bacterial optical densities at 540 nm (OD(540)s) in order to test
Schuth, Christoph   +25 more
core   +1 more source

Extractability and mobility of mercury from agricultural soils surrounding industrial and mining contaminated areas [PDF]

open access: yes, 2010
This study focussed on a comparison of the extractability of mercury in soils with two different contamination sources (a chlor-alkali plant and mining activities) and on the evaluation of the influence of specific soil properties on the behaviour of the
Reis, Ana Teresa   +4 more
core   +4 more sources

Sensitive elements based on bacteriorhodopsin for fiber-optics sensors of chemical components [PDF]

open access: yes, 2005
The sensitive thin film elements based on bacteriorhodopsin in polymeric matrixes for the multichannel fiber-optical sensor system of measurement of chemical composition of gas mixtures are offered. It is shown, that modification of films compositions
Trikur, I. I.   +7 more
core   +1 more source

Silicon isotope fractionation during silica precipitation from hot-spring waters: Evidence from the Geysir geothermal field, Iceland [PDF]

open access: yes, 2015
This study aims to explore the extent and controls of silicon isotope fractionation in hot spring systems of the Geysir geothermal area (Iceland), a setting where sinter deposits are actively formed.
Keller, Nicole S.   +14 more
core   +2 more sources

Chemical diffusivity of boron in melts of haplogranitic composition [PDF]

open access: yes, 1993
Chemical diffusivities of B in synthetic melts of haplogranitic composition have been measured by the diffusion couple technique at 1 atm between 1200–1600°C.
Chaussidon, Marc   +2 more
core   +1 more source

The Organic Matter of Chernozem

open access: yesБюллетень Почвенного института им. В.В. Докучаева, 2017
Theories and points of view of soil science classics, such as V. V. Dokuchaev, I. V. Turin and M. M. Kononva on chernozem organic matter are reviewed in this work.
B. M. Kogut
doaj   +1 more source

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