Suchergebnisse
Suchergebnisse:
Vor 6 Tagen · Irving Langmuir. Irving Langmuir ordnete die Oktette in Schalen an, deren Durchmesser den Bahnen im Bohrschen Atommodell entsprachen. Er konnte anhand der Oktett-Regel das individuelle Verhalten der chemischen Elemente erklären: Die Edelgase haben bereits ein vollständiges Valenzelektronen-Oktett und sind nicht geneigt, chemische ...
Vor einem Tag · This is the case with the high-vacuum electron tube claim as well. Since what Langmuir actually did was to improve upon German inventor Wolfgang Gaede’s mercury vacuum pump in 1912, (4) which Gaede had invented in Germany in 1905 (5) and use this improvement to produce better hard-vacuum electron tubes which his employer – General Electric ...
Vor 5 Tagen · Our results represent a solid step toward building a complete theory for understanding and controlling chemically active colloids, from the molecular level to their mesoscopic superstructures and ultimately to the macroscopic properties of the assembled materials.
Vor 2 Tagen · It is well known that in the year 1916, Irving Langmuir postulated an experimental isotherm model. The model is helpful in establishing monolayer adsorption over homogeneous surfaces and in providing values of different thermodynamic parameters like change in Gibb’s free energy (ΔG°), enthalpy (ΔH°), entropy (ΔS°), etc., during the adsorption process. The linear form of the Langmuir ...
Vor 5 Tagen · In 1916, Irving Langmuir published a new model isotherm for gases adsorbed to solids, which retained his name. It is a semi-empirical isotherm derived from a proposed kinetic mechanism. This isotherm was based on different assumptions one of which is that dynamic equilibrium exists between adsorbed gaseous molecules and the free ...
Vor 5 Tagen · In this study, a monodisperse magnetic polystyrene mesoporous composite microsphere (MPPS) composed of Fe 3 O 4 nanoparticles loaded on polystyrene mesoporous microspheres is introduced. These microspheres serve as effective adsorbents for the swift removal of cationic dyes.
Vor 5 Tagen · The optimization of a dual negative voltage waveform is proposed to achieve stable droplet jetting for the ultralow viscosity (0.71 mPa·s) photoresist with a 1:10 dilution ratio employed in the semiconductor packaging processes.
