Effect of α-ketoglutarate and its structural analogues on hysteretic properties of α-ketoglutarate dehydrogenase

AbstractThe burst of product accumulation during the KGD reaction was investigated. It has been shown not to be the obligatory feature of catalysis, but appears when increasing the enzyme saturation by KG. Structural analogues of KG and the SH-group modification suppress the initial burst without preventing catalysis. The results obtained are in favour of the existence of the regulatory site for binding KG and its structural analogues essential for hysteretic properties of KGD

ANALYSIS AND DEVELOPMENT OF THE MIMO OFDM MODEL

Increasing the efficiency of data transmission of wireless OFDM communication systems is an urgent task. The paper presents a model of the MIMO OFDM system, and also studies the dependence of the appearance of an error in a frame (BER) on the number of transmitting and receiving antennas

Realization of the Curve Fitting methods in the Maple visual environment

The modern programs must have a comfortable graphical user interface (GUI). Graphical interface is the environment for creation of graphical window with visual elements: buttons, edit text boxes, check boxes, list boxes, menu, toolbars etc., where a user chooses appropriate problem conditions, input data and sets proper options. For the development of such programs visual programming environments C++ Builder, Delphi, Visual Basic etc. were developed a decade ago. Recently user graphical interface technology was also implemented in the Computer Algebra Systems Maple (www.maplesoft.com), Mathematica (www.wolfram.com) and MatLab (www.mathworks.com). The present work investigates Maple graphical user interface creation facilities. It is possible to create GUI with Maplets package or in Maplet Builder design environment. This work examines these two methods with examples. The GUI creation facilities were tried investigating the curve fitting methods of Maple system. Some applied programs, using Maple Curve Fitting package, were created in Maple visual environment. The practical problem of speech sound formants variation curves fitting was also investigated. For that task some programs were created in the Maple visual environment.Švietimo akademijaVytauto Didžiojo universiteta