Now showing items 11-20 of 46
Schottky contributions in chemical thermodynamics
(Kluwer Academic Publishers; Wiley Heyden Ltd., Chichester and Akadémiai Kiadó, Budapest ; Springer Science+Business Media, 1985-11)
Cryogenic heat-capacity determinations provide a useful tool for the determination of the energetic spectrum of condensed phases and also reveal information on their discrete electronic level structures as well. We have ...
Vibrational analysis of peptides, polypeptides, and proteins. XXXII. Α-Poly( L -glutamic acid)
(Wiley Subscription Services, Inc., A Wiley Company, 1985-08)
The Raman and ir spectra of Α-helical poly( L -glutamic acid) have been assigned on the basis of a normal mode calculation for this structure. The force field was based on our previously refined main-chain force constants ...
Synthesis of fused pyrrolines by the intramolecular cycloadition of azides application to the pyrrolizidine alkaloids.
(Elsevier, 1985)
Intramolecular 1,3-dipolar cycloaddition of azide 4 proceeds through triazoline 5 and vinyl aziridine 6, resulting in the formation of the 1,5-homodienyl shift product 7 and the tetrahydropyrrolizines 8 and 9. Compound 8 ...
Laser optogalvanic spectroscopy of molecules: The red electronic system of titanium oxide (TiO)
(Elsevier, 1985-02-08)
The laser optogalvanic (LOG) spectrum of the (0,0) bands of the B 3[Pi] 3[Delta] transition of titanium oxide (TiO) has been observed. The TiO molecules were generated in a glow discharge by sputtering titanium metal and ...
Raman and normal mode studies of the polypeptide chain conformations in crystalline magnesium and calcium poly(-glutamate)s
(Elsevier, 1985)
An analysis of the Raman spectra of dry crystalline magnesium and calcium poly(-glutamate)s, based on a normal mode calculation of [alpha]-helical poly(-glutamate), shows that the polypeptide chains in both salts have an ...
Thermodynamics of thallium alkanoates I. Heat capacity and thermodynamic functions of thallium(I) n-hexanoate
(Elsevier, 1985-05)
The sub-ambient heat capacity of thallium(I) n-hexanoate is characterized by transitions at 203.5 and 208.3 K which show Cp, m/R maxima of about 400 and 2500 and ([Delta]Sm/R)'s of 1.03 and 1.07. Both appear to be essentially ...
Indirect determination of thallium by differential-pulse polarography
(Elsevier, 1985-06)
The method is based on the separation ofTl(I) as Tl2HPMo12O40, stripping of the molybdate, and measurement of the peak current in differential-pulse polarography of the molybdenum. The calibration graph is linear over the ...
Free-jet spectra and structure of o-, m- and p-dihydroxybenzenes
(Elsevier, 1985-11-15)
Analysis of the free-jet spectra of hydroquinone (para), catechol (ortho) and resorcinol (meta) shows the presence of multiple origins in each molecular spectrum which are interpreted as belonging to separate structural isomers.
Evidence for two cyclic photophosphorylation reactions concurrent with ferredoxin-catalyzed non-cyclic electron transport
(Elsevier, 1985-06-26)
Addition of ferredoxin to isolated spinach chloroplast thylakoid membranes reconstitutes phosphorylating electron transfer characterized by elevated P/O ratios (1.6). When oxygen is the terminal electron acceptor for reduced ...
Thermodynamics of uranium intermetallic compounds I. Heat capacities of URu3 and URh3 from 5 to 850 K
(Elsevier, 1985-11)
Heat capacities of carefully characterized samples of URu3 and URh3 were measured by adiabatic calorimetry from 5 to 350 K by adiabatic calorimetry and from 300 to 850 K by enthalpy-increment drop calorimetry. Values for ...