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991.
Hung Viet Le 《Journal of Mathematical Analysis and Applications》2004,296(1):44-64
In this paper we prove, for certain values of p, the Lp boundedness of the maximal operator
992.
In acetonitrile, the reaction of hydrated InCl(3) and 2-[(2-(pyridylamino)phenylazo]pyridine [HL] affords an ink-blue octahedral indium(III) complex having the formula [InCl(3)(HL)]. The compound is a zwitterion in which the positive and the negative charges reside on the extended ligand HL. The secondary amine nitrogen in it is deprotonated, while the free pyridyl nitrogen is protonated. The reaction of ZnCl(2), on the other hand, produces a di-metallic complex, [Zn(2)Cl(2)L(2)], where the two metal ions are bridged across the deprotonated ligand [L](-). The color of the di-zinc complex is also ink blue. Interestingly, the UV-vis spectrum of the indium compound is almost identical to that of the di-zinc compound. Long-wavelength transitions near 590 nm in these examples are assigned to intraligand pi-pi transitions. 相似文献
993.
N.P. Duong L.T. Hung T.D. Hien N.P. Thuy N.T. Trung E. Brück 《Journal of magnetism and magnetic materials》2007
A study of the half-metallic character of the semi Heusler alloys Co1−xCuxMnSb (0?x?0.9) is presented. We investigated the saturation magnetization MS at temperatures from 5 K to room temperature and the temperature dependence of the DC magnetic susceptibility χ above Curie temperature TC. The magnetic moments at 5 K, for most compositions are very close to the quantized value of 4 μB for Mn3+ ion, the compound with 90% Co substituted by Cu is still ferromagnetic with MS (5 K)=3.78 μB/f.u. These results emphasize the role of Co atoms in maintaining the ferromagnetic order in the material. The Curie temperature is decreased from 476 K to about 300 K as the Cu content increases from 0% to 90%. Above TC, the χ−1 vs T curves follow very well the Curie–Weiss law. The effective moment μeff and paramagnetic Curie temperature θ are derived. A comparison between the values of MS at 5 K and μeff shows a transition from localized to itinerant spin system in these compounds. 相似文献
994.
Truong TN Nayak M Huynh HH Cook T Mahajan P Tran LT Bharath J Jain S Pham HB Boonyasiriwat C Nguyen N Andersen E Kim Y Choe S Choi J Cheatham TE Facelli JC 《Journal of chemical information and modeling》2006,46(3):971-984
With the expansion of the Internet and World Wide Web (or the Web), research environments have changed dramatically. As a result, the need to be able to efficiently and securely access information and resources from remote computer systems is becoming even more critical. This paper describes the development of an extendable integrated Web-accessible simulation environment for computational science and engineering called Computational Science and Engineering Online (CSE-Online; http://cse-online.net). CSE-Online is based on a unique client-server software architecture that can distribute the workload between the client and server computers in such a way as to minimize the communication between the client and server, thus making the environment less-sensitive to network instability. Furthermore, the new software architecture allows the user to access data and resources on one or more remote servers as well as on the computing grid while having the full capability of the Web-services collaborative environment. It can be accessed anytime and anywhere from a Web browser connected to the network by either a wired or wireless connection. It has different modes of operations to support different working environments and styles. CSE-Online is evolving into middleware that can provide a framework for accessing and managing remote data and resources including the computing grid for any domain, not necessarily just within computational science and engineering. 相似文献
995.
Mulkern RV Barnes AS Haker SJ Hung YP Rybicki FJ Maier SE Tempany CM 《Magnetic resonance imaging》2006,24(5):563-568
Detailed measurements of water diffusion within the prostate over an extended b-factor range were performed to assess whether the standard assumption of monoexponential signal decay is appropriate in this organ. From nine men undergoing prostate MR staging examinations at 1.5 T, a single 10-mm-thick axial slice was scanned with a line scan diffusion imaging sequence in which 14 equally spaced b factors from 5 to 3,500 s/mm(2) were sampled along three orthogonal diffusion sensitization directions in 6 min. Due to the combination of long scan time and limited volume coverage associated with the multi-b-factor, multidirectional sampling, the slice was chosen online from the available T2-weighted axial images with the specific goal of enabling the sampling of presumed noncancerous regions of interest (ROIs) within the central gland (CG) and peripheral zone (PZ). Histology from prescan biopsy (n=9) and postsurgical resection (n=4) was subsequently employed to help confirm that the ROIs sampled were noncancerous. The CG ROIs were characterized from the T2-weighted images as primarily mixtures of glandular and stromal benign prostatic hyperplasia, which is prevalent in this population. The water signal decays with b factor from all ROIs were clearly non-monoexponential and better served with bi- vs. monoexponential fits, as tested using chi(2)-based F test analyses. Fits to biexponential decay functions yielded intersubject fast diffusion component fractions in the order of 0.73+/-0.08 for both CG and PZ ROIs, fast diffusion coefficients of 2.68+/-0.39 and 2.52+/-0.38 microm(2)/ms and slow diffusion coefficients of 0.44+/-0.16 and 0.23+/-0.16 um(2)/ms for CG and PZ ROIs, respectively. The difference between the slow diffusion coefficients within CG and PZ was statistically significant as assessed with a Mann-Whitney nonparametric test (P<.05). We conclude that a monoexponential model for water diffusion decay in prostate tissue is inadequate when a large range of b factors is sampled and that biexponential analyses are better suited for characterizing prostate diffusion decay curves. 相似文献
996.
997.
998.
Huu Hung Bui 《Proceedings of the American Mathematical Society》1998,126(4):1081-1088
We provide a -algebra structure on the bialgebra associated with a monoidal linear -functor. The -algebra obtained in this way is a compact quantum group in the sense of Baaj and Skandalis. We show that the category of finite dimensional unitary corepresentations of this -algebra is equivalent to the given category.
999.
1000.
The dependence of the relative intensityk on the thin film thickness has been measured. This dependence has enabled us to verify the Monte Carlo simulation. From the experimentally determined dependence, distributions of X-rays in the specimen ((z) functions) have been derived. It has been found that the intensities calculated by the present Monte Carlo model are always higher than those measured.The authors wish to thank Prof. R. Kuel of the Faculty of Mathematics and Physics, Charles University, Prague, for the measurement of the sputtered thin films thickness. 相似文献