An L-glutaminase producing microorganism was isolated and identified as Bacillus subtilis RSP-GLU. The production pattern of the enzyme by isolated microorganism was studied in submerged fermentations (Smf). Initially various process parameters such as pH, incubation temperature, inoculum concentration and agitation speed were optimized based on the one-at-a-time method. It was noticed that at ...

This paper describes the use of Fiber Bragg Grating (FBG) sensors to investigate the thermomechanical properties of saline ice. FBG sensors allowed laboratory measurements of thermal expansion of ice samples with a range of different sizes and geometries. The high sampling frequency, accuracy, and resolution of the FBG sensors provide good quality data across a temperature range from 0C to −20C...

Let V be a non empty zero structure. An element of Cthe carrier of V is said to be a C-linear combination of V if: (Def. 1) There exists a finite subset T of V such that for every element v of V such that v / ∈ T holds it(v) = 0. Let V be a non empty additive loop structure and let L be an element of Cthe carrier of V . The support of L yielding a subset of V is defined by: (Def. 2) The support...

Received October 6, 1992; revised manuscript received October 4, 1993; permission to publish received July 6, 1994 A novel approach involving a delay-trigger method and doped, glassy polymers has been developed to determine the contribution of the electric-field-induced third-order effect to the second-order macroscopic susceptibility x(2) of nonlinear optical dyes. A submillisecond, variable t...

High-pressure synchrotron X-ray diffraction was carried out on a single crystal of mascagnite, compressed in diamond anvil cell. The sample maintained its structure up to ~18 GPa. volume–pressure data were fitted by third-order Birch–Murnaghan equation state (BM3-EOS) yielding K0 = 20.4(7) GPa, K’0 6.1(2), and V0 499(1) Å3, as suggested the F-f plot. axial compressibilities, calculated with BM3...

Para definir su capacidad de producción grano e introducir al amaranto (Amaranthus spp.) como cultivo para el ciclo agrícola Otoño–Invierno (OI) en noreste México, Campo Experimental la Facultad Agronomía Universidad Autónoma Nuevo León, Marín N. L., se condujo un experimento bajo diseño bloques completos azar con arreglo parcelas divididas y dos repeticiones. Se probaron cuatro genotipos Amara...

Dissimilar metals friction welding of austenitic–martensitic stainless steels is commonly used in order to manufacture engine valves in the automobile industry. In this study, X53CrMnNiN219 (austenitic stainless steel) and X45CrSi93 (martensitic stainless steel) valve steel rods were welded by friction welding process. The welded joint was then heat treated at 760 0C for 60 min. Mechanical prop...

dissimilar metals friction welding of austenitic–martensitic stainless steels is commonly used in order to manufacture engine valves in the automobile industry. in this study, x53crmnnin219 (austenitic stainless steel) and x45crsi93 (martensitic stainless steel) valve steel rods were welded by friction welding process. the welded joint was then heat treated at 760 0c for 60 min. mechanical prop...