Sphingomonas sp. strain A4 is capable of utilizing acenaphthene as its sole carbon and energy source. To isolate the genes responsible for acenaphthene degradation, transposon mutagenesis was performed on strain A4 and four mini-Tn5-inserted mutants lacking the ability to utilize acenaphthene were isolated. In three of the four mini-Tn5 inserted mutants, the mini-Tn5s were inserted into the sam...

Bu çalışmanın amacı Türkiye’nin N11 ülkeleriyle olan dış ticaretin belirleyicilerini tahmin etmek ve bu doğrultuda politika önerilerinde bulunmaktır. (Next Eleven) ülkeleri Türkiye, Bangladeş, Mısır, Endonezya, İran, Güney Kore, Meksika, Nijerya, Pakistan, Filipinler Vietnam’dan oluşmaktadır. Değişik makroekonomik demografik göstergeler eşliğinde yapılan öngörülerde, ülkelerinin birçoğunun (öze...

A method for quantum computation in the presence of spontaneous emission is proposed. The method combines strong and fast ~dynamical decoupling! pulses and a quantum error correcting code that encodes n logical qubits into only n11 physical qubits. Universal, fault-tolerant, quantum computation is shown to be possible in this scheme using Hamiltonians relevant to a range of promising proposals ...

A method for the calculation of the hyper–Wiener index (WW ) of a benzenoid system B is described, based on its elementary cuts. A pair of elementary cuts partitions the vertices of B into four fragments, possessing nrs , r, s = 1, 2 vertices. WW is equal to the sum of terms of the form n11 n22 + n12 n21 . The applicability of the method is illustrated by deducing a general expression for WW of...

An experimental strategy for determining the extent to which multiply isotopically labeled fragments are incorporated intact into relatively complicated compounds of interest is presented. The NMR methods employed are based on isotope-filtered one-dimensional spectra and difference HSQC spectra incorporating a spin echo designed to report on the presence of a second NMR active isotope at a coup...

Pseudomonas sp. strain WBC-3 utilizes para-nitrophenol (PNP) as a sole carbon and energy source. The genes involved in PNP degradation are organized in the following three operons: pnpA, pnpB, and pnpCDEFG. How the expression of the genes is regulated is unknown. In this study, an LysR-type transcriptional regulator (LTTR) is identified to activate the expression of the genes in response to the...

The hyperparameter in image restoration by the Bayes formula is an important quantity. This communication shows a physical method for the estimation of the hyperparameter without approximation. For artificially generated images by prior probability, the hyperparameter is computed accurately. For practical images, accuracy of the estimated hyperparameter depends on the magnetization and energy o...

Salt stress is one of the most serious factors limiting the productivity of rice, the staple diet in many countries. Gibberellic acid has been reported to reduce NaCl-induced growth inhibition in some plants including rice. Most paddy soils have a natural population of Cyanobacteria, prokaryotic photosynthethic microorganisms, which synthesize and liberate plant growth regulators such as gibber...