Results 31 to 40 of about 9,114 (295)
Calculations of positron binding and annihilation in polyatomic molecules [PDF]
A model-potential approach to calculating positron-molecule binding energies and annihilation rates is developed. Unlike existing ab initio calculations, which have mostly been applied to strongly polar molecules, the present methodology can be applied ...
Gribakin, G. F., Swann, A. R.
core +2 more sources
Effects of heterofunctional alkali-metal formate doping on perovskite solar cell performance
Various internal and external defects present in the perovskite film are one of the main factors that cause low efficiency and stability, and in order to realize high-performance perovskite solar cells, it is necessary to develop a method to effectively ...
Sakshi Thakur +3 more
doaj +1 more source
The integrated method to select drilling muds for abnormally high pressure formations [PDF]
The article describes the method for choosing a drilling mud for drilling abnormally high pressure formations. A carefully selected drilling mud formulation would not only enhance an array of interrelated fluid properties, but also minimize the impact on
Boyko, Igor Alekseevich +4 more
core +1 more source
FORMATS TECHNIQUES, FORMATS COMMUNAUTAIRES, FORMATS D’ENGAGEMENT:
A l'image des communautés virtuelles traitées par Howard Rheingold, la plupart des travaux sur cettethématique partent de l'offre technique pour analyser la communauté qui se développe autour de (sur, dans, avec, grâce à) cette infrastructure (l'incertitude sur la préposition qui va qualifier la relation est significative).
Boullier, Dominique +2 more
openaire +3 more sources
Synthese, Kristallstruktur und Eigenschaften von Tetraaminophosphonium-iodid P(NH2)4I [PDF]
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
This opinion concerns the re‐authorisation of ammonium, calcium and sodium formates as preservatives in feed for all animals and the use of ammonium and sodium formates as silage additives.
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP)
doaj +1 more source
Preserving and analytically examining daguerreotypes is particularly challenging because of their multi-material and multi-component structure. Various sensors have been exploited to examine mainly the image plates of the daguerreotypes even though the ...
Diego Quintero Balbas +6 more
doaj +1 more source
Penelitian ini dibuat untuk meningkatkan pengetahuan terkait format pemerintahan “hubungan kewenangan pemerintah pusat dan daerah”. Istilah sistem pemerintahan berasal dari gabungan dua kata sistem dan pemerintahan. Kata sistem merupakan terjemahan dari kata system (bahasa Inggris) yang berarti susunan, tatanan, jaringan, atau cara.
openaire +1 more source
Development and screening of selective catalysts for the synthesis of clean liquid fuels [PDF]
This article is a compilation of the research carried out under EEC contract EN3V-0400-D at the Institut für Energieverfahrenstechnik in Jülich and at the Faculty of Chemical Technology and Materials Science, Delft, concerning the development and ...
Drecken, C.-B. von der +9 more
core +2 more sources
Construction of offshore gas wells is characterized by increased requirements for both the technological process in general and the technological parameters of drilling fluids in particular. Parameters and properties of the used drilling muds must meet a
Ekaterina Leusheva +2 more
doaj +1 more source

