The electronic structures of the nitrogenase active sites, FeMoco and FeVco, have been investigated by a parallel study of the holoenzymes with synthetic cubane cluster models. Using high-resolution X-ray spectroscopies coupled with density functional theory calculations, key diff erences between FeMoco and FeVco have been identifi ed, rationalizing the isozymes’ diff erential affi nity for var...

Stomach cancer has an important place in medicine. Unfortunately, diagnosis of gastric is being established majority cases at the IV stage. So, yt necessary to detect tumors earliest stages carcinogenesis and evaluate treat precancerous diseases, such as atrophy intestinal metaplasia. Aims : To estimate value Narrow-band imaging Dual focus (NBI Focus) endoscopy capabilities differential metapla...

in this study we produced a new method for solving regular dierential equations with step size h and taylor series. this method analyzes a regular dierential equation with initial values and step size h. this types of equations include quadratic and cubic homogenous equations with constant coecients and cubic and second- level equations.

This paper examines the eff ect of neighborhood diversity on the nativity gap in homevalue appreciation in Australia. Specifi cally, immigrant homeowners experienced a 41.7 percent increase in median home values between 2001 and 2006, while the median value of housing owned by the native-born increased by 59.4 percent over the same period. We use a semi-parametric decomposition approach to asse...

This paper examines the eff ect of neighborhood diversity on the nativity gap in homevalue appreciation in Australia. Specifi cally, immigrant homeowners experienced a 41.7 percent increase in median home values between 2001 and 2006, while the median value of housing owned by the native-born increased by 59.4 percent over the same period. We use a semi-parametric decomposition approach to asse...

—We analyzed diff erences in wing morphology between sexes and among age classes of Western Sandpipers (Calidris mauri) to assess possible relationships with diff erential migration, acrobatic aerial displays, and potential vulnerability to predation, using size-constrained component analysis. Data on wing morphology of all four sex and age classes were available from birds spending the nonbree...

admitted to hospital for thunderclap headache, blurred vision and hypertension. Based on clinical manifestations, diagnostic work-up and follow-up, the authors diagnosed the case as posterior reversible encephalopathy syndrome (PRES) [1]. We agree that PRES should be considered in this case, while diff erential diagnosis such as subarachnoid hemorrhage (SAH) requires further investigation and e...

Comparative analysis of two ideologically distinct approaches in the theory of fuzzy di"erential equations is given. Domains of applications, advantages and shortcomings of those approaches are described. New de2nitions of solutions to fuzzy di"erential equations are proposed. c © 2002 Elsevier Science B.V. All rights reserved.

This work presents the arguments for the possibility of approximating some discontinuous dynamical systems with continuous or even smooth dynamical systems. The discontinuous di€erential equation, which describes the system, is transformed into a di€erential inclusion and then into a di€erential equation with continuous or smooth right-hand side. As an example a generalization of the equations ...

In this paper, we are concerned with a class of nonlinear implicit fractional di?erential equation adiscrete delay. By means the contraction mapping principle, prove existence unique solution.Then, investigate continuous dependence solution upon initial delay data and Ulamstability.