Escherichia coli general NAD(P)H:flavin oxidoreductase (Fre) does not have a bound flavin cofactor; its flavin substrates (riboflavin, FMN, and FAD) are believed to bind to it mainly through the isoalloxazine ring. This interaction was real for riboflavin and FMN, but not for FAD, which bound to Fre much tighter than FMN or riboflavin. Computer simulations of Fre.FAD and Fre.FMN complexes showe...

Subject and Purpose. Results are presented of the solar corona investigations performed with world famous Ukrainian radio telescopes. The work has been aimed at offering a consistent review recent achievements in observations variety low-frequency emissions from Sun. Methods Methodology. studies quiet (thermal) sporadic (burst-like) Sun have car- ried out decameter-wavelength telescopes UTR-2, ...

The Integrated Energy System (IES) of Ukraine functions as part the European Union (EU) electric power system ENTSO-E. Each country whose IES operates in ENTSO-E structure must ensure presence a full-fledged fre-quency and automatic control (AFPCS, AFPC system) national IES. only exception is Ukraine, because its inclusion happened during martial law absence herewith system. It violates corners...

The scattering analysis from metallic Grid FSS consisting of rectangular perforations on a thick metallic screen illuminated by an oblique incident plane wave is presented. The grid structure is analyzed using Scale Changing Technique (SCT) which is based on the partition of the grid-plane into planar sub-domains defined at various scale-levels. Electromagnetic interaction between subsequent sc...

background : the aim of this study was to demonstrate similarities and differences between mothers and daughters regarding dietary and non-dietary risk factors for bone fractures and osteoporosis. methods : the study was carried out in 2007-2010 on 712 mothers (29-59 years) and daughters (12-21 years) family pairs. in the sub-sample (170 family pairs) bone mineral density (bmd) was measured for...

Background: Despite advances in the medical care of renal transplant recipients which have led to an improvement in allograft survival, renal allograft rejection is still a major ob-stacle to successful organ transplantation. Understanding the mechanisms contributing to allograft rejection will be of great importance for the development of efficient antirejection strategies. Objective: The aim ...

A quartz crystal oscillator can be thought ofas a resonator connected across an amplifier considered asa nonlinear dipole the impedance of which depends on theamplitude of the current that flows through it. The non-linear amplifier resistance and reactance are obtained byusing a time domain electrical simulator like SPICE (Simu-lation Program with Integrated Circuit Emph...

background: this study was conducted to explain the trend of cutaneous leishmaniasis (cl) in kermanshah province, western iran from 1991- 2012. methods: in this analytical-descriptive study, all of the patients suspected to cl in kermanshah province were studied. smears were prepared from most of them, stained with giemsa, and examined microscopically for leishman bodies. a few of the patients ...

In this paper, a three dimensional mathematical model for HTLV-1infection with intracellular delay and immune activation delay is investigated.By applying the frequency domain approach, we show that time delays candestabilize the HAM/TSP equilibrium, leading to Hopf bifurcations and sta-ble or unstable periodic oscillations. At the end, numerical simulations areillustrated.