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991.
We generalize and improve several inequalities of the ?eby?ev-Grüss-type using least concave majorants of the moduli of continuity of the functions involved. Our focus is on normalized positive linear functionals. We discuss a problem posed by the two Gavreas and also give the solution of a stronger one. In a section about the non-multiplicativity of positive linear operators it is demonstrated that the previous use of second moments is not quite the right choice. This is documented in the case of the classical Hermite-Fejér and de La Vallée Poussin convolution operators. 相似文献
992.
993.
Mihai Mihăilescu Gheorghe Moroşanu Vicenţiu Rădulescu 《Comptes Rendus Mathematique》2009,347(9-10):521-526
We establish sufficient conditions for the existence of solutions to a class of nonlinear eigenvalue problems involving nonhomogeneous differential operators in Orlicz–Sobolev spaces. To cite this article: M. Mih?ilescu et al., C. R. Acad. Sci. Paris, Ser. I 347 (2009). 相似文献
994.
Nilay Bereli Gizem Ertürk M.Aşkın Tümer Rıdvan Say Adil Denizli 《Biomedical chromatography : BMC》2013,27(5):599-607
Antibodies are used in many applications, especially as diagnostic and therapeutic agents. Among the various techniques used for the purification of antibodies, immunoaffinity chromatography is by far the most common. For this purpose, oriented immobilization of antibodies is an important step for the efficiency of purification step. In this study, Fc fragment‐imprinted poly(hydroxyethyl methacrylate) cryogel (MIP) was prepared for the oriented immobilization of anti‐hIgG for IgG purification from human plasma. Non‐imprinted poly(hydroxyethyl methacrylate) cryogel (NIP) was also prepared for random immobilization of anti‐hIgG to compare the adsorption capacities of oriented (MIP/anti‐hIgG) and random (NIP/anti‐hIgG) cryogel columns. The amount of immobilized anti‐hIgG was 19.8 mg/g for the NIP column and 23.7 mg/g for the MIP column. Although the amount of immobilized anti‐hIgG was almost the same for the NIP and MIP columns, IgG adsorption capacity was found to be three times higher than the NIP/anti‐hIgG column (29.7 mg/g) for the MIP/anti‐hIgG column (86.9 mg/g). Higher IgG adsorption capacity was observed from human plasma (up to 106.4 mg/g) with the MIP/anti‐hIgG cryogel column. Adsorbed IgG was eluted using 1.0 m NaCl with a purity of 96.7%. The results obtained here are very encouraging and showed the usability of MIP/anti‐hIgG cryogel prepared via imprinting of Fc fragments as an alternative to conventional immunoaffinity techniques for IgG purification. Copyright © 2012 John Wiley & Sons, Ltd. 相似文献
995.
996.
Tosun Serap Gençtürk Uzun Davut Yeşilot Serkan 《Journal of Solid State Electrochemistry》2021,25(4):1271-1281
Journal of Solid State Electrochemistry - A series of novel KxNa0.6-xMn0.35Fe0.35Co0.3O2 (x = 0, 0.005, 0.01, 0.05, 0.1) materials were successfully synthesized by the solid-state... 相似文献
997.
Er Ozge Eksin Ece Soylu Hale Melis Göçmen Bayram Nalbantsoy Ayşe Yurt Fatma Erdem Arzum 《Applied biochemistry and biotechnology》2019,187(4):1539-1550
Applied Biochemistry and Biotechnology - Snake venoms are a natural biological source that has potential therapeutic value with various protein compounds. Disintegrins originally were discovered as... 相似文献
998.
This paper justifies dynamic programming PDEs for optimal control problems with performance criteria involving curvilinear
integrals. The main novel feature, relative to the known theory, is that the multitime dynamic programming PDEs are now connected
to the multitime maximum principle. For the first time, an interesting and useful connection between the multitime maximum
principle and the multitime dynamic programming is given, characterizing the optimal control by means of a PDE system that
may be viewed as a multitime feedback law. 相似文献
999.
Yuri V. Rogovchenko Fatoş Tuncay 《Nonlinear Analysis: Theory, Methods & Applications》2008,69(1):208-221
For a second-order nonlinear differential equation with a damping term, we obtain new oscillation criteria without an assumption that has been required for related results reported in the literature over the last two decades. Two approaches refining the standard integral averaging technique suggested in the paper can be used to derive a variety of simpler oscillation theorems for different classes of nonlinear differential equations, and both sets of oscillation criteria established in the paper are of independent interest. Several examples are provided to illustrate the relevance of the new theorems. 相似文献
1000.
Ayşegül Gölcü 《Journal of Analytical Chemistry》2008,63(6):538-543
A sensitive, extraction, derivatization, evaporation and complexation-free, direct spectrophotometric method is developed
for the determination of some anthypertensive drugs such as acebutolol hydrochloride (ACH), atenolol (ATE), and propranolol hydrochloride (PRH) in bulk and pharmaceutical formulations. The optimum conditions for the analysis of aqua solutions of drugs are established.
The method permits the determination of ACH, ATE, and PRH over a concentration range of 37.3–111.9, 53.3–213.1 and 14.8–51.8
μg/mL, respectively. Detection and quantification limits are calculated. The obtained results showed good recoveries of 99.60,
99.20 and 99.80% with relative standard deviations of 0.82, 0.79 and 1.70% for ACH, ATE, and PRH, respectively. The repeatability
and reproducibility of the drugs for aqua media are determined. Precision and accuracy of the developed methods are used for
the recovery studies. The proposed method is applicable for the assay of the three drugs under investigation in dosage forms
and the results are in good agreement with those obtained by the literature method.
The text was submitted by the author in English. 相似文献