Thứ Hai, 18 tháng 9, 2017

Thứ Sáu, 25 tháng 8, 2017

Some remarks and examples on domain of sums of series in banach spaces

Authors: Dau, The Cap
Le, Xuan Truong
Keywords: Banach Spaces
Issue Date: 2003
Publisher: H. : ĐHQGHN
Series/Report no.: Vol. 19;No. 4 (2003)
Abstract: In this note we present some remarks on the domains of sums of series and some examples on domains of sums of series in infinite - dimensional Banach spaces.
Description: p. 9-12
URI: http://repository.vnu.edu.vn/handle/VNU_123/58235
ISSN: 2588-1124
Appears in Collections:Mathematics and Physics

Mechanics of Nano-composite material

Authors: Nguyen, Dinh Duc
Keywords: Mechanics;Nano-composite material
Issue Date: 2003
Publisher: H. : ĐHQGHN
Series/Report no.: Vol. 19;No. 4 (2003)
Abstract: Nano material has just been exploited and employed recently. However, its extraodinary and marvelous characteristic opend a new and significal prospect in new material field. There have been numerous mechanical problems that should be taken into consider and being solved. In this article, we want to introduce the concept of nanocrystal, our new results in researching on the material, and problems posing on this industry.
Description: p. 13-18
URI: http://repository.vnu.edu.vn/handle/VNU_123/58244
ISSN: 2588-1124
Appears in Collections:Mathematics and Physics

Thứ Ba, 22 tháng 8, 2017

One result of the cyclic inequality

Authors: Nguyen, Vu Luong
Keywords: cyclic inequality
Issue Date: 2006
Publisher: H. : ĐHQGHN
Series/Report no.: Vol. 22;No. 3 (2006)
Abstract: In this paper we present One result of the cyclic inequality .
Description: p. 39-47
URI: http://repository.vnu.edu.vn/handle/VNU_123/57659
ISSN: 2588-1124
Appears in Collections:Mathematics and Physics

Conditions for the approximated analytical solution of a parametric oscillation problem described by the mathieu equation

Authors: Nguyen, Dang Bich
Ngo, Dinh Bao Nam
Keywords: analytical solution;parametric oscillation problem;mathieu equation
Issue Date: 2006
Publisher: H. : ĐHQGHN
Series/Report no.: Vol. 22;No. 2 (2006)
Abstract: This paper presents the scientific detailed basis and the involving conditions for finding the approximated analytical solution of a parametric oscillation problem described by the Mathieu equation.
Description: p. 9-16
URI: http://repository.vnu.edu.vn/handle/VNU_123/57762
ISSN: 2588-1124
Appears in Collections:Mathematics and Physics

Thứ Tư, 9 tháng 8, 2017

Study of the Effect of Sulfamic Acid on Formation Cu-Se Compounds by CV and EQCM

Authors: Dang, Thi Bich Hop
Pham, Hong Quang
Do, Thi Kim Anh
Do, Phuc Quan
Keywords: Cyclic voltammetry;EQCM;Cu-Se compounds;electrodeposition;thin films
Issue Date: 2014
Publisher: H. : ĐHQGHN
Series/Report no.: Vol. 30;No. 2 (2014)
Abstract: A combination of Cyclic Voltammetry (CV) and Electrochemical Quartz Crystal Microbalance (EQCM) has been used to study the effect of sulfamic acid as a complexing agent on the formation of Cu-Se compounds. It has been found that sulfamic acid does not affect the deposition of Cu in the absent of Se. However, when Cu and Se are simultaneously, sulfamic acid was found to affect strongly the formation of Cu-Se compounds, namely it causes and facilitates the reactions forming Cu-Se compounds. Furthermore, at high concentration, sulfamic acid causes a mass-loss process, leading to a change of composition and a poor surface morphology. A suitable concentration of sulfamic acid can be concerned from these studies.
Description: p. 25-32
URI: http://repository.vnu.edu.vn/handle/VNU_123/56063
ISSN: 2588-1124
Appears in Collections:Mathematics and Physics

The Systems for Generalized of Vector Quasiequilibrium Problems and Its Applications

Authors: Le, Huynh My Van
Nguyen, Van Hung
Keywords: Systems of generalized quasiequilibrium problems;quasiequilibrium problems;quasivariational inequality problem;fixed-point theorem;existence;closedness
Issue Date: 2014
Publisher: H. : ĐHQGHN
Series/Report no.: Vol. 30;No. 2 (2014)
Abstract: In this paper, we study the systems of generalized quasiequilibrium problems which includes as special cases the generalized vector quasi-equilibrium problems, vector quasiequilibrium problems, and establish the existence results for its solutions by using fixed-point theorem. Moreover, we also discuss the closedness of the solution sets of systems of generalized quasiequilibrium problems. As special cases, we also derive the existence results for vector quasiequilibrium problems and vector quasivariational inequality problems. Our results are new and improve recent existing ones in the literature.
Description: p. 33-46
URI: http://repository.vnu.edu.vn/handle/VNU_123/56066
ISSN: 2588-1124
Appears in Collections:Mathematics and Physics