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11.
The 68Zn(, α)66Cu reaction populating low-lying states in 66Cu has been studied at θlab = 4° using deuteron beams in the energy range 9.0 to 10.5 MeV. Tensor analyzing powers were calculated and natural- or unnatural-parity assignments were made for thirteen states in 66Cu. By combining these results with existing limits unambiguous Jπ assignments of 2+, 2+, 2+ and 1+ have been made for the levels at 186, 465, 822 and 1344 keV respectively. The previous tentative assignments to seven other levels have been confirmed while that for the 1247 keV level has been shown to be incorrect. The identification of the quartet of levels based on the configuration has been confirmed. 相似文献
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J.A. Kuehner J. Szücs P. Ikossi A.M. McDonald D.T. Petty 《Physics letters. [Part B]》1977,66(1):32-34
A new technique for gamma-ray angular correlation measurements using tensor polarized deuterons is illustrated with the reaction. The 4.77 MeV level of 22Na is assigned Jπ = 3+ and the transition to the 1.95 MeV level is determined to be pure magnetic dipole. 相似文献
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The reaction 18O(d, α)16N has been studied using a tensor-polarized deuteron beam at incident energies of 8.50, 9.25, 10.00, 10.30, 10.75 and 11.30 MeV. From measurement of the tensor analysing power of the reaction when the α-particles are emitted near 0°, spin-parity combinations have been deduced for thirteen levels in 16N up to 6.2 MeV excitation. These results, together with previous work, lead to new and unambiguous spin and parity assignments for four of these levels. 相似文献
15.
Z.M. Babar Wan Mohd Azizi Solachuddin JA Ichwan Qamar Uddin Ahmed Abul Kalam Azad Imranul Mawa 《Natural product research》2019,33(15):2266-2270
The current study provides a way of extraction for both active NSO and WSE from Nigella sativa seeds using 98% methanol. About 1?kg of ground seeds was macerated by 1:2.5 w/v (g/mL) for 72?hours. After rotary evaporation and 7 days of continuous drying and chilling at 50 and 4?°C, NSO and WSE were obtained at the same instant. Solubility tests of 24 solvents and 11 thin layer chromatographic analyses while 2, 2-diphenyl-1-picrylhydrazyl free radical scavenging assay of NSO (73.66) , WSE (33.32) and NSO?+?WSE (78.22) against ascorbic acid (IC50?=?4.28?mg/mL) was performed. WSE was found to be highly soluble in water and 5% NaOH exhibiting the same Rf value of 0.95 for EtOH:DMSO (9:1) against the honey. WSE has revealed more than twofold higher anti-oxidant activity than others. Formulation of WSE with Tualang honey may provide better targeted hydrophilic drug delivery systems. 相似文献
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Zhang Y Shen Y Kuehner D Wu S Su Z Ye S Niu L 《Chemical communications (Cambridge, England)》2008,(36):4273-4275
Both the behavior and the general key factors for assembling flexible SWNT films at the water/oil interface were investigated; the electron transfer, one of the most fundamental chemical processes, at the SWNT-sandwiched water/oil interface was also firstly illustrated using scanning electrochemical microscopy. 相似文献
17.
Joel P. Kuehner F. Andrew Tessier Jr. Allan Kisoma Jonathan G. Flittner Michael R. McErlean 《Experiments in fluids》2010,48(3):421-430
Instantaneous temperature measurements were obtained in an underexpanded jet using electrostrictive laser-induced gratings.
Evaluation of the technique under static, low-pressure conditions provided a baseline uncertainty or precision for single-shot
temperature measurements of 4.4% of the local mean temperature, which represents the minimum detectable temperature fluctuation.
The underexpanded jet was operated at a nozzle pressure ratio of 2.39 and a fully expanded jet Mach number of 1.19. Data were
acquired along the centerline and over two radial traverses through the shear layer. Mean temperature data agree well with
expectations, describing the shock-cell structure and the compressible shear layer. The growth in shear-layer width with downstream
distance can be identified in the mean and fluctuating temperature measurements. Temperature fluctuations are near the baseline
detection limit in the jet core and surrounding ambient air, and reach a maximum in the shear layer. The temperature fluctuation
measurements compare well with previous computational and experimental work, confirming the application of the technique to
a turbulent, supersonic flow. 相似文献
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