there are two methods for identifying formation interface in oil wells: core analysis, which is a precise approach but costly and time consuming, and well logs analysis, which petrophysists perform, which is subjective and not completely reliable. in this paper, a novel coupled method was proposed to detect the formation interfaces using gr logs. second approximation level (a2) of gr log gained...

Let r(= r(n))!1 with 3 r n1 for an arbitrarily small constant > 0, and let Gr denote a graph chosen uniformly at random from the set of r-regular graphs with vertex set f1; 2; : : : ; ng. We prove that with probability tending to 1 as n!1, Gr has the following properties: the independence number of Gr is asymptotically 2n log r r and the chromatic number of Gr is asymptotically r 2 log r .

in this study production of iranian uf white cheese with probiotic strains of lactobacillus acidophilus and bifidobacterium lactis was investigated. cheese samples were ripened at 6°c for 60 days. the viability of probiotic strains and chemical compositions such as dry matter, ph, salt, protein and fat were assayed during ripening days. cheese samples also were analyzed in terms of textural pro...

Smoked salmon contaminated with Listeria monocytogenes has been implicated in foodborne listeriosis. The objectives of this study were to model the growth characteristics and examine the growth relationship of L. monocytogenes and native microflora in smoked salmon. Smoked salmon samples with a native microflora count of 2.9 log(10) CFU/g were inoculated with a 6-strain mixture of L. monocytoge...

The purpose of this study was to identify the formation interfaces from geophysical well log data using the wavelet transform, and a combination of the wavelet transform and the Fourier transform methods. In the wavelet transform method, the identification of formation interfaces is based on the wavelet coefficients from the wavelet transform of spontaneous potential (SP) log and gamma ray (GR)...

Let A be a subset of the primes. Let δP (N) = |{n ∈ A : n ≤ N}| |{n prime : n ≤ N}| . We prove that, if δP (N) ≥ C log log logN (log logN)1/3 for N ≥ N0, where C and N0 are absolute constants, then A ∩ [1, N ] contains a non-trivial three-term arithmetic progression. This improves on Green’s result [Gr], which needs δP (N) ≥ C s log log log log logN log log log logN .

We present elemental abundances for multiple HII regions in Leo A and GR 8 obtained from long slit optical spectroscopy of these two nearby low luminosity dwarf irregular galaxies. As expected from their luminosities, and in agreement with previous observations, the derived oxygen abundances are extremely low in both galaxies. High signal-to-noise ratio observations of a planetary nebula in Leo...

We present an algorithm that checks the duality of a pair of monotone Boolean expressions in disjunctive normal form in polynomial time plus O(log n/ log logn) nondeterministic guesses, where n is the size of the input, thus improving a previous result of Kavvadias and Stavropoulos [IPL, 85(1):1–6, 2003] and Eiter et al. [STOC 2003] which placed the problem in co-NP[log n], the subclass of co-N...

The surfaces of ready-to-eat meats are susceptible to postprocessing contamination by Listeria monocytogenes. This study examined and modeled the growth characteristics of L. monocytogenes on cooked ham treated with lactic acid solutions (LA). Cooked ham was inoculated with L. monocytogenes (ca. 10(3) CFU/g), immersed in 0, 0.5, 0.75, 1.0, 1.25, 1.5, and 2.0% LA for 30 min, vacuum packaged, an...