Second spectrum of Chromium (Cr II) Part I: New energy level reanalysis

Chemistry & Theory of Chromium Deposition: Part I - Chemistry

Although electrodeposition of chromium has heen practiced for 75 years, the mechanism is still open to conjecture. Par t of the reason is the complexity of the chemistry ofchromic acidand its existencetnaqueoussolutionin the form of coordinated octahedral complexes. These complexes vary both structurally and kinetically a t different CrO, concentrations. Thechemistryoftriand hexavalent Chromium...

Part I : Part Ii : Part Iii : Part Iv

The theory of stick-slip is developed, based on the concept of a static and dynamic coefficient of friction. The dynamic coefficient is assumed to be independent of displacement and to depend wholly on normal stress across the surface. It is also assumed to be velocity-independent. The theory predicts that the stress drop during stick-slip is independent of machine stiffness. The displacement d...

Surgical Anatomy. Part II, Second Edition

Synthesis and crystal structures of the chromium(II) and chromium(III) hexafluoroacetylacetonate complexes trans-Cr(hfac)2(thf)2 and Cr(hfac)3

Treatment of a tetrahydrofuran solution of CrCl2(thf) with Na(hfac), hfac = 1,1,1,5,5,5-hexafluoroacetylacetonate, followed by crystallization from diethyl ether, affords the six-coordinate chromium(II) complex Cr(hfac)2(thf)2. The crystal structures of Cr(hfac)2(thf)2 and the chromium(III) complex Cr(hfac)3 have been determined by single-crystal X-ray diffraction. Cr(hfac)2(thf)2 adopts a tran...

Guest Editorial Spectrum and Energy Efficient Design of Wireless Communication Networks: Part II

SPECTRUM efficiency (SE) and energy efficiency (EE) are among the most important venues for technological advances in current and emerging wireless communication networks. The past decade has witnessed tremendous efforts and progress made by both the industry and academia for improving SE. We foresee that the emerging cognitive and self-organizing networks will further increase SE. In recent ye...