排序方式: 共有22条查询结果,搜索用时 15 毫秒
1.
Djalal Trache Kamel Khimeche Mokhtar Benziane Abdallah Dahmani 《Journal of Thermal Analysis and Calorimetry》2013,112(1):215-222
Solid–liquid equilibria for three binary mixtures of N-(2-acetoxyethyl)-p-nitroaniline (1) + 2-nitrodiphenylamine (2), N-(2-acetoxyethyl)-p-nitroaniline (1) + ethyl centralite (2) and N-(2-acetoxyethyl)-p-nitroaniline (1) + methyl centralite (2) have been determined experimentally using differential scanning calorimeter (DSC). Simple eutectic behaviours for these systems have been observed. The experimental results have been correlated by means of NRTL and UNIQUAC equations. The root-mean-square deviations of the solubility temperatures for all measured data vary from 0.61 to 3.32 K and depend on the particular model used. The best solubility correlation has been obtained with the UNIQUAC model. 相似文献
2.
Mokhtar Benziane Kamel Khimeche Abdellah Dahmani Sawsen Nezar Djalal Trache 《Journal of Thermal Analysis and Calorimetry》2013,112(1):229-235
Solid–liquid equilibria for three binary mixtures of {n-eicosane (1) + methyl palmitate (2)}, {n-tetracosane (1) + methyl stearate (2)} and {n-octacosane (1) + methyl stearate (2)} were measured using differential scanning calorimeter. Simple eutectic behaviours for these systems were observed. The experimental results were correlated by means of the modified UNIFAC (Larsen and Gmehling versions), UNIQUAC and ideal models. The root-mean-square deviations of the solubility temperatures for all measured data vary from 0.21 K (for UNIQUAC model) to 1.07 K (for Ideal model) and depend on the particular model used. The best solubility correlation was obtained with UNIQUAC model. 相似文献
3.
Hardy JC Iacob VE Sanchez-Vega M Neilson RG Azhari A Gagliardi CA Mayes VE Tang X Trache L Tribble RE 《Physical review letters》2003,91(8):082501
The half-life, 3.8755(12) s, and superallowed branching ratio, 0.5315(12), for 22Mg beta decay have been measured with high precision. The latter depended on gamma-ray intensities being measured with an HPGe detector calibrated for relative efficiencies to an unprecedented 0.15%. Previous precise measurements of 0+ --> 0+ transitions have been restricted to the nine that populate stable daughter nuclei. No more such cases exist, and any improvement in a critical Cabibbo-Kobayashi-Maskawa unitarity test must depend on precise measurements of more exotic nuclei. With this branching-ratio measurement, we show those to be possible for T(z)=-1 parents. We obtain a corrected Ft value of 3071(9) s, in good agreement with expectations. 相似文献
4.
V. Kroha P. Bém V. Burjan J. Novák Š. Piskoř E. Šimečková J. Vincour A. Azhari C.A. Gagliardi A.M. Mukhamedzhanov X. Tang L. Trache R.E. Tribble F. Carstoiu 《Czechoslovak Journal of Physics》2001,51(5):471-489
The indirect method of determining astrophysical nuclear reaction rates is discussed. The overall normalization of the astrophysical S-factor for such reactions may be determined from one quantity, the asymptotic normalization coefficient of the overlap function of the bound state wave functions for the initial and final channels. These coefficients can be found also from peripheral transfer reactions whose amplitudes are determined by the same overlap function as the amplitudes of the corresponding astrophysical radiative capture processes. The experimental test of this approach and the last results of S17 measurements are presented. 相似文献
5.
V.Z. Goldberg B.T. Roeder G.V. Rogachev G.G. Chubarian E.D. Johnson C. Fu A.A. Alharbi M.L. Avila A. Banu M. McCleskey J.P. Mitchell E. Simmons G. Tabacaru L. Trache R.E. Tribble 《Physics letters. [Part B]》2010
We measured the excitation function for 13O + p elastic scattering to obtain data on the unknown 14F nucleus. The ground state and several low-lying excited states in 14F were observed and spin/parity assignments were made. 14F appears to be much less unstable than was predicted. We compare theoretical predictions for the 14F level scheme with the experimental results. 相似文献
6.
Assuming that the operators L1, L2 are self-adjoint and satisfy the generalized Davies-Gaffney estimates, we shall prove that the weighted Hardy space associated to operators L1, L2 on product domain, which is defined in terms of area function, has an atomic decomposition for some weight . 相似文献
7.
La Cognata M Spitaleri C Mukhamedzhanov AM Irgaziev B Tribble RE Banu A Cherubini S Coc A Crucillà V Goldberg VZ Gulino M Kiss GG Lamia L Mrazek J Pizzone RG Puglia SM Rapisarda GG Romano S Sergi ML Tabacaru G Trache L Trzaska W Tumino A 《Physical review letters》2008,101(15):152501
The 18O(p,alpha)15N reaction is of primary importance in several astrophysical scenarios, including fluorine nucleosynthesis inside asymptotic giant branch stars as well as oxygen and nitrogen isotopic ratios in meteorite grains. Thus the indirect measurement of the low energy region of the 18O(p,alpha)15N reaction has been performed to reduce the nuclear uncertainty on theoretical predictions. In particular the strength of the 20 and 90 keV resonances has been deduced and the change in the reaction rate evaluated. 相似文献
8.
9.
Mokhtar Benziane Kamel Khimeche Djalal Trache Abdellah Dahmani 《Journal of Thermal Analysis and Calorimetry》2013,114(3):1383-1389
Solid–liquid equilibria for binary mixtures of {methyl stearate (1) + biphenyl (2)}, {methyl stearate (1) + naphthalene (2)}, {methyl palmitate (1) + biphenyl (2)} and {methyl palmitate (1) + naphthalene (2)} were measured using differential scanning calorimeter. Simple eutectic behaviours for these systems were observed. The experimental results were correlated by means of the NRTL, Wilson, UNIQUAC and ideal models. The root-mean-square deviations of the solubility temperatures for all measured data vary from 0.5477 K (for UNIQUAC model) to 7.79 K; the deviations depend on the binary system studied and particular model used. The best solubility correlation was obtained with UNIQUAC model and this observation confirms previous results. 相似文献
10.