In the present work, B-ZSM-5 zeolite membranes were synthesized on porous tubular α-alumina supports by several subsequence in situ crystallization hydrothermal treatments. The TiO2- Bohmite and ɣ- alumina intermediate layers were applied to improve the lattice matching between zeolite layer and the support. The uniform membrane intermediate layers with low permeation resistance were...

Abstract In this paper we present the distribution of molecular gas in Milky Way Galactic plane from l = [59.75, 74.75]° and b [−5.25, +5.25]°, using MWISP 12 CO/ 13 CO/C 18 O emission-line data. The region can be mainly attributed to Local Spur, Arm, Perseus arm, Outer arm. Statistics physical properties each such as excitation temperature, optical depth, column density, are presented. Using D...

Abstract In this work, we study the properties of molecular clouds in second quadrant Milky Way Midplane, from l = 104.°75 to 119.°75, and b ?5.°25 5.°25, using 12 CO, 13 C 18 O J 1 ? 0 emission line data Imaging Scroll Painting project. We identify 857 300 CO spectral cubes, respectively, DENDROGRAM + SCIMES algorithms. The distances are estimated, physical such as mass, size, surface densitie...

the enzyme pgalactosidase from a mutant strain of a. niger uv-5 was partially purified using ammonium sulfate and acetone. the saturation range of 60-80% ammonium sulfate was found to yield 60.5% enzyme recovery with 2.4 fold purification. acetone precipitation at enzyme: acetone ratio of 1 : 1.5 brought about a higher yield i.e. 68% and three-fold purification. the combined procedures of 1.5 v...