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71.
Arjunan V Rani T Varalakshmy L Mohan S Tedlamelekot F 《Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy》2011,78(5):1449-1454
The Fourier transform infrared (FTIR) and FT-Raman spectra of p-cyanobenzoic acid (CBA) have been recorded in the range 4000-400 and 4000-100 cm(-1), respectively. The complete vibrational assignment and analysis of the fundamental modes of the compound were carried out using the observed FTIR and FT-Raman data. The vibrational frequencies determined experimentally were compared with theoretical wavenumbers obtained from ab initio HF and DFT-B3LYP gradient calculations employing 6-31G**, 6-311++G** and cc-pVTZ basis sets for the optimised geometry of the compound. The geometry and normal modes of vibration obtained from the HF and DFT methods are in good agreement with the experimental data. The normal coordinate analysis was also carried out with ab initio force fields utilising Wilson's FG matrix method. The interactions of cyano and carboxylic acid groups with the skeletal vibrational modes were investigated. 相似文献
72.
Professor Miguel A.F. Sanjuán 《Contemporary Physics》2013,54(1):97-98
Reactor Physics. By R. Schulten and W. Güth. Translated by W. K. Mansfield. In two volumes. (Harrap, 1967.) [Vol. I: pp. viii + 144; Vol. II: pp. vi+ 154.] 22s. 6d. each volume. Principles of Atomic Spectra. By B. W. Shore and D. H. Menzel. (John Wiley, 1968.) [Pp. xiv + 538.] £8. 18s. 0d. Les Transitions Electroniques dans les Solides Non Conducteurs. (Colloque de la Société Français de Physique.) (Presses Universitaires de la France, 1967.) [Pp. 177.] 35 F. Mechanics. Point Objects and Particles. By Terry Triffet. (John Wiley, 1968.) [Pp. ix + 546.] 32s. Traité ?Électricité Théorique, Vol. IV: Electromagnetism, etc. By Marc Jouguet. (Paris: Gauthier-Villars, 1968.) [Pp. 350.] 94 F. Modern Physics: An Introductory Survey. By Arthur Beiser. (Addison-Wesley, 1968.) [Pp. ix + 221.] 26s. Perpetual Motion: Electrons and Atoms in Crystals. By Alec T. Stewart. (Heinemann Educational Books, 1968.) [Pp. x + 146.] 25s. An Introduction to the Theory of Superconductivity. By C. G. Kuper. (Clarendon Press: Oxford University Press, 1968.) [Pp. vii + 301.] 60s. Scope: Textbook. Level: Postgraduate; Undergraduate. Progress in High Temperature Physics and Chemistry. Edited by C. A. Rouse. (Pergamon Press, 1968.) [Pp. 176.] 75s. Ondes dans las Plasmas. By Daniel Quémada. (Paris: Hermann, 1968.) [Pp. 384.] 48 Fr. Plasmas et Milieux Ionisés. By Evry Schatzman.(Presses Universitaires de la France, 1968.) [Pp. 134.] 16 Fr. Mechanics. By R. C. Smith and P. Smith. (John Wiley &; Sons, 1968.) [Pp. xviii + 263.] 80s. Scope: Textbook. Level: Undergraduate. Materials of High Vacuum Technology. Vol. 2: Silicates. By Werner Espe. (Pergamon Press, 1968.) [Pp xxiii + 660.] £16. Glassblowing for Laboratory Technicians. By R. Barbour. (Pergamon Press, 1968.) [Pp XV + 245.] 40s. Equilibrium Thermodynamics. By J. C. Adkins. (McGraw-Hill, 1968.) [Pp. xii + 283.] 48s. Scope: Textbook. Level: Undergraduate. Introduction to Thermodynamics of Irreversible Processes. (Third Edition.) By I. Prigogigne. (John Wiley (Interscience), 1968.) [Pp. xv + 147.] 56s. Scope: Library. Level: Specialist/postgraduate. Introduction to Physical Statistics. By Bruce R. Lindsay. (Dover Books (Constable), 1968.) [Pp. ix + 306.] 26s. 6d. Scope: Textbook. Level: Undergraduate. Solid State Physics. An Introduction to its Theory. By H. Clark. (Macmillan, 1968.) [Pp. vii + 239.] 40s. Scope: Textbook. Level: Specialist/postgraduate. Wave Mechanics. By Gunther Ludwig. (Pergamon Press, 1968.) [Pp. v + 230.] 30s. hard cover; 21s. flexi. Introduction to Special Relativity. By Robert Resnick. (John Wiley, 1968.) [Pp. x + 226.] 70s. 相似文献
73.
Anita Rani Surender Kumar N. R. Bannerjee 《Fresenius' Journal of Analytical Chemistry》1987,328(1-2):33-36
Summary A Potassium ion-selective electrode based on dibenzo-18-crown-6-tungstophosphoric acid precipitate membrane is prepared and conditions for the best functioning have been investigated. The working concentration and pH-range of the electrode is 2.0×10–2 to 1.3×10–6 mol/l and 2.9–6.5, respectively. The selectivity coefficient values for a large number of cations are quite low except for caesium and ammonium ions. The electrode can tolerate non-aqueous content upto 20%.
Kaliumion-sensitive Membranelektrode auf Basis von Kronenether-Heteropolysäure相似文献
74.
75.
Hima Rani Kalita 《Tetrahedron letters》2007,48(29):5047-5049
Cuprous iodide has been found to be a very effective catalyst for allylation of aldehydes with allyltributylstannane. The catalytic system efficiently promotes the allylation reaction in DMF to produce homoallylic alcohols in high yield. 相似文献
76.
Let Гr,n—r denote the infimum of all number Г > 0 such that for any real indefinite quadratic form inn variables of type (r, n—r), determinantD ≠ 0 and real numbers c1; c2,…, cn, there exist integersx
1,x2,…,xn satisfying 0 < Q(x1+c1,x2 + c2,…,xn + cn) ≤(Г|Z > |)1/n. All the values of Гr,n—r are known except for г1,4. Earlier it was shown that 8 ≤Г1,4 ≤16. Here we improve the upper bound to get Г1,4 < 12. 相似文献
77.
The expressions for the Clark, Gazis and Wallis type of angular forces are rederived in the caseof fcc metals. These expressions are now foundtobe equivalent to the deLauney type of angular forces. 相似文献
78.
We have studied the mean free path of He fragments from projectile beams of Ar, Fe and Kr of energy 1 ? E ?2A GeV at different distances from their production point and found that they are the same, independent of their (i) energy, (ii) target size, (iii) target excitation, (iv) He multiplicities and (v) production angles. 相似文献
79.
Hard sphere diameters of liquid alkali metal alloys (Na-Cs and K-Rb) are calculated at 373 K ensuring the minimum Helmholtz
free energy of the system. These diameters are then used to fix the packing density of the alloy. On alloying, the hard sphere
diameters of Na in Na-Cs and K in K-Rb alloys expand whereas those of Cs and Rb contract. 相似文献
80.
The lattice dynamics of the b.c.c. lattice has been investigated using the central and the angular forces which are in general rotationally invariant. It has been observed that the four force constants are related to three elastic constants only. Dispersion curves for sodium were calculated and were found to be in excellent agreement with experiment. 相似文献