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111.
Polarization observables for the nucleon-nucleon (NN) scattering are investigated in the frame work of relativistic harmonic
model belowE
lab=250 MeV, with the inclusion of theσ andπ meson exchange. The results can be interpreted as the ‘Cheshire cat principle’ of NN interaction. 相似文献
112.
Confined-gluon-exchange among relativistically confined quark clusters is used to obtain singlet S and P wave N-N scattering
phase-shifts. A good agreement is obtained with the experimental results. 相似文献
113.
Lanthanum fluoride thin film has been deposited on glass substrates by PVD method at various deposition temperatures (Ts), viz, 300, 473, 573 and 673 K. The hexagonal phase LaF3 film has been detected by using glancing angle XRD analysis. The structural parameters such as lattice constants, grain size and micro-strain has been calculated from the XRD data. The F− ion conduction through the grain and grain boundary has been analyzed using impedance analysis. The modulus spectra reveals the non-Debye nature and the distribution of relaxation times of the film. 相似文献
114.
Energies of some Non-regular Graphs 总被引:1,自引:0,他引:1
The energy of a graph G is the sum of the absolute values of its eigenvalues. In this paper, we study the energies of some classes of non-regular
graphs. Also the spectrum of some non-regular graphs and their complements are discussed. 相似文献
115.
1-Carbethoxy-2,4,6,8-tetraaryl-3,7-diazabicyclo[3.3.1] nonan-9-ones (1, 2) were synthesized and their 1H and 13C NMR data are reported. Chemical shifts and spectral assignments for 2,4,6,8-tetrakis(4-chlorophenyl)-3,7-diazabicyclo[3.3.1]nonan-9-one (3), 2,4,6,8-tetraphenyl-3-thia-7-azabicyclo[3.3.1]nonan-9-one (4) and 2,4,6,8-tetraaryl-3,7-diazabicyclo[3.3.1]nonanes (5-7) are also included. 相似文献
116.
Vijayakumar N. Sonar M. Venkatraj Sean Parkin Peter A. Crooks 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(8):o493-o495
The asymmetric unit of the racemic form of the title compound, C12H15NOS, contains four crystallographically independent molecules. The olefinic bond connecting the 2‐thienyl and 1‐azabicyclo[2.2.2]octan‐3‐ol moieties has Z geometry. Strong hydrogen bonding occurs in a directed co‐operative O—H...O—H...O—H...O—H R44(8) pattern that influences the conformation of the molecules. Co‐operative C—H...π interactions between thienyl rings are also present. The average dihedral angle between adjacent thienyl rings is 87.09 (4)°. 相似文献
117.
The formation of an ion-association complex by the interaction of iodotellurate(IV) with cetyltrimethylammonium bromide is used as the basis of an extractive procedure to determine tellurium in the range 2.5-12.5 mug in a final aqueous phase volume of 20 ml. The method is simple, reliable and sensitive. Selectivity is achieved by separation of tellurium on aluminium hydroxide as collector. 相似文献
118.
Vijayakumar N. Sonar Sean Parkin Peter A. Crooks 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(2):o135-o136
In the title compound, C23H21N3O3, the indole ring is planar and the phenyl ring of the benzyl group makes a dihedral angle with the best plane of the indole ring of 73.77 (4)°. The double bond connecting the azabicyclic and indole moieties has Z geometry. 相似文献
119.
120.
Volatile organic compounds (VOCs) play a major role in the physical and chemical process of the tropospheric chemical reactions in both polluted and remote environments. A theoretical work has been presented on the VOC of allyl alcohol with O3 molecule is investigated using density functional theory methods. The reaction profile is initiated through the cycloaddition of ozone which leads to the formation of primary ozonide with minimal relative energy barrier of 1.31 kcal/mol which decomposes to form carbonyl molecule and carbonyl oxide. Carbonyl oxide, i.e. criegee intermediates reacts with various atmospheric species to produce more hazardous and toxic end products to the environment. The condensed form of Fukui function was calculated to predict reactive sites of the primary and secondary reaction profile. The rate coefficient using CVT with SCT over the temperature range of 258–358K is analysed and also to study the atmospheric effects of allyl alcohol in the atmosphere. The predicted rate coefficient for the favourable reaction pathway of kp1 found to be 1.190 ×10?15 cm3/molecule/sec and comparable with the experimental result at 298 K. The atmospheric lifetime of allyl alcohol was found to be around 10 hours in addition to that global warming potentials are compared with the CO2. 相似文献