Results 41 to 50 of about 9,048 (281)

Synthese, Kristallstruktur und Eigenschaften von Tetraaminophosphonium-iodid P(NH2)4I [PDF]

open access: yes, 1994
The title compound has been prepared starting from phosphorothionic triamide SP(NH2)3 by methylation of the sulfur atom and subsequent ammonolysis reaction in dry acetonitrile and dichloromethane, respectively, both at room temperature.
Horstmann, Stefan, Schnick, Wolfgang
core   +1 more source

Formate dehydrogenase [PDF]

open access: yesFEMS Microbiology Letters, 1990
Formate is a substrate, or product, of diverse reactions catalyzed by eukaryotic organisms, eubacteria, and archaebacteria. A survey of metabolic groups reveals that formate is a common growth substrate, especially among the anaerobic eubacteria and archaebacteria.
openaire   +2 more sources

The elusive abnormal CO2 insertion enabled by metal-ligand cooperative photochemical selectivity inversion

open access: yesNature Communications, 2018
The development of molecular catalysts for the reverse water–gas shift reaction is impeded by the general selectivity of CO2 insertion into M–H bonds to formates.
Felix Schneck   +6 more
doaj   +1 more source

A new way to make oxalic acid from CO2 and alkali formates: Using the active carbonite intermediate

open access: yesSustainable Chemistry for Climate Action, 2022
Conversion of CO2 to valuable chemicals such as polymers via the electrochemical reduction of CO2 to formate followed by the formate to oxalate coupling reaction (FOCR) is an interesting concept to replace fossil feedstocks with renewable ones.
Eric Schuler   +3 more
doaj   +1 more source

Biografisierung der Supervision und Wandel der Nachfrage oder wohin geht die DGSv

open access: yesForum Supervision, 2014
"Ach, Supervision oder Coaching, das sind doch nur Begriffe, Hauptsache ich bekomme den Aufrag", so oder ähnlich arbeiten und "argumentieren’ viele Supervisorinnen und Supervisoren, die auf das Profil von Supervision und Coaching reagieren und sich ...
Katharina Gröning
doaj   +1 more source

Thermocatalytic Decomposition of Dimethyl Methylphosphonate Based on CeO2 Catalysts with Different Morphologies

open access: yesApplied Sciences, 2023
The catalytic performances of the catalysts and decomposition mechanisms of dimethyl methylphosphonate (DMMP), a commonly used nerve agent simulant, are well understood based on previous studies.
Weimin Kong   +6 more
doaj   +1 more source

Galaxy formation [PDF]

open access: yesSymposium - International Astronomical Union, 1987
Theories of galaxy formation via hierarchical clustering of cold dark matter and by fragmentation of gaseous pancakes or shells are reviewed and compared. Dissipative processes are crucial to all theories of galaxy formation, and are discussed in terms of a simple model involving multiple cloud interactions.
openaire   +1 more source

Evidence of Volatility Metals and Metalloids at Environment Conditions

open access: yesApplied Sciences, 2022
Tailings represent a significant risk to the environment globally, but very little is known about the composition of the near-surface air. We conducted laboratory experiments to determine the sizes of the particles and the chemical composition of the ...
Svetlana B. Bortnikova   +4 more
doaj   +1 more source

ANTIBODY FORMATION [PDF]

open access: yesThe Journal of Experimental Medicine, 1963
Injection of a sufficient dose of bacteriophage ϕX 174 into guinea pigs results in the formation of rapidly sedimenting antibody molecules (19S), and later, slowly sedimenting molecules (7S). Above a threshold dose of antigen, the relative rate of 19S formation is maximal and dose-independent; below this dose, slower relative rates are obtained.
Martin S Finkelstein, Jonathan W Uhr
openaire   +1 more source

In Situ Kinetics Study of the Accelerated Aging of Poly(ethylene oxide) Using PhotoDSC [PDF]

open access: yes, 2006
PhotoDSC has been applied to follow the global kinetics of chain scissions resulting from the UV light irradiation or from the thermal degradation of a high molecular weight PEO (4 106 gâmol-1).
Baba, Mohamed   +4 more
core   +3 more sources

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