As an important component of coal structure, the macropores have a great influence on CBM recovery. In this paper, characteristic two samples collected from 3# seam in south Qinshui Basin, China was analyzed basic mercury intrusion porosimetry, and fully coupled triple-porosity/double permeability mathematical model for recovery established according to physical structure non-Darcy flow methane...

BACKGROUND The efficiency of enzymatic hydrolysis is reduced by the structural properties of cellulose. Although efforts have been made to explain the mechanism of enzymatic hydrolysis of cellulose by considering the interaction of cellulolytic enzymes with cellulose or the changes in the structure of cellulose during enzymatic hydrolysis, the process of cellulose hydrolysis is not yet fully un...

Abstract It is well-known that the presence of geometry heterogeneity in porous media enhances solute mass mixing due to fluid velocity heterogeneity. However, laboratory measurements are still sparse on characterization role high-permeability inclusions transport, particularly concerning fractured media. In this study, transport solutes quantified after a pulse-like injection soluble fluoresce...

newcastle disease (nd) is one of the most serious illnesses of chickens. live vaccines are widely used to prevent chicken from the disease all over the world. to access the effective and potentiate nd vaccine, a homogenous subpopulation from lasota strain was selected following cultivation of the virus on primary chicken embryofibroblast (cef) cells. pathogenicity indices and molecular characte...

BACKGROUND AND AIM: According to the effect of the adhesive and substrate type on the bond strength, examination of the adhesive is required in all aspects. The aim of this study was to evaluate the shear bond strength of different adhesive systems to normal dentin (ND) and caries affected dentin (CAD) in permanent teeth. METHODS: Thirty extracted molars with small occlusal caries were selected...

introduction: capnography, is an easy, fast and practical method which its application in the diagnosis of pulmonary thromboendarterectomy (pte) has recently been studied. this study aimed to assess the diagnostic value of end-tidal co2 (etco2) and the alveolar dead space (avds) in the diagnosis of patients suspected to pte who have been referred to the emergency department. materials and metho...

removal of smear layer and disinfection of canals are important objectives of teeth root canal cleaning. in order to achieve this purpose, rinsing substances, intra canal drugs as well as ultrasound are used. today, use of laser to remove smear layer and to disinfect root canals has increasingly attracted the attentions. till now different lasers such as co2, nd:yag, er:yag, er,cr:ysgg have bee...