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991.
Some extension theorems for l-group-valued M-measures are proved. 相似文献
992.
Mária Hnátová Dušan Bakoš L’udmila ČCernáková Monika Michliková 《Chemical Papers》2016,70(9):1262-1267
Biocompatible polymer sponge materials based on biodegradable natural polymer chitosan, which can be loaded with clinician-selected drugs are still in the centre of interest for their wide use in clinical practice. This study shows possibilities of the technology which combines simple addition of β-cyclodextrin (β-CD), with dialdehyde starch (DAS) as a cross-linking agent of chitosan, to chitosan solutions for subsequent formation of sponge matrix. The advantage of such system is in avoiding chemical modifications and working only with natural substances. It is shown that, in matrix formation during lyophilisation, β-CD molecules tend to accumulate on the surface of the porous matrix structure. This was confirmed by a study of the known inclusion complex of β-CD and salicylic acid (SA) in heptane. The same study was applied to berberine (BER) which can also form an inclusion complex with β-CD in a water solution. Moreover, adsorption of drugs on the surface of the porous structure has to be also taken into account. This enables the production of sponge topical medical preparations useful for sustained release of BER. 相似文献
993.
İlknur Üstündağ Aslı Erkal Tamer Koralay Yusuf Kağan Kadıoğlu Seungwon Jeon 《Journal of Analytical Chemistry》2016,71(7):685-695
We obtained a gold nanomaterial/graphene oxide-modified glassy carbon electrode and characterized it using transmission electron microscope, scanning electron microscope, cyclic voltammetry (CV), and X-ray photoelectron spectroscopy techniques. A response of the electrode using square wave anodic stripping voltammetry for Pb2+, Cu2+, and Hg2+ was found linear in the range from 1 × 10–7 to 1 × 10–11 M. The detection limits of Pb2+, Cu2+ and Hg2+ were 0.14, 0.5 and 1.2 pM, respectively. The method was applied to the simultaneous determination of Pb2+, Cu2+ and Hg2+ in seawater samples from a coastal region of Anatolia, and the results corresponded well with the values obtained by inductively coupled plasma-optical emission spectroscopy. 相似文献
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İdris Dağ Ali Şahin Alper Korkmaz 《Numerical Methods for Partial Differential Equations》2010,26(6):1483-1503
The Galerkin method is used with quadratic B‐spline base functions to obtain the numerical solutions of Fisher's equation which is a one dimensional reaction‐diffusion equation. To observe the effects of reaction and diffusion, four test problems related to pulse disturbance, step disturbance, super‐speed wave and strong reaction are studied. A comparison is performed between the obtained numerical results and some earlier studies. © 2009 Wiley Periodicals, Inc. Numer Methods Partial Differential Eq, 2010 相似文献
997.
The bound state solution of Coulomb Potential in the Dirac equation is calculated for a position dependent mass function M(r) within the framework of the asymptotic iteration method (AIM). The eigenfunctions are derived in terms of hypergeometric function and function generator equations of AIM. 相似文献
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