By using the data of logging, cuttings thin section identification and analysis in study area to four characteristics Nantun Formation reservoir their relationship, lower limit standard effective physical property is established by logging interpretation model mud content, porosity, permeability saturation, mercury injection method, oil production test method cumulative frequency statistics met...

The relationship between elastic wave velocities and water saturation in a water/gas reservoir depends strongly on whether saturation is heterogeneous (patchy) or homogeneous. Heterogeneity in saturation may result from lithologic heterogeneity because under conditions of capillary equilibrium, different lithologies within a reservoir can have different saturations, depending on their porositie...

Physical training in water might be included in a comprehensive pulmonary rehabilitation programme, but data on the feasibility and safety of this technique in chronic obstructive pulmonary disease (COPD) patients are lacking. We studied cardiorespiratory parameters of 20 stable COPD patients (10 with forced expiratory volume in one second (FEV1) < 35% of predicted value, and 10 with FEV1 > or ...

The spatial distribution of saturated areas is an important consideration in numerous applications, such as water resource planning or sighting of management practices. However, in humid well vegetated climates where runoff is produced by saturation excess processes on hydrologically active areas (HAA) the delineation of these areas can 5 be difficult and time consuming. Much of the non-point s...

A new and extremely sensitive method for measuring nitrogenase activity through acetylene reduction is presented. Ethylene produced by nitrogenase-mediated reduction of acetylene is detected by using laser photoacoustics (LPA). This method possesses a detection limit making it 3 orders of magnitude more sensitive than traditional gas chromatographic analysis. Photoacoustic detection is based on...

The procedures for culturing the experimental organism, P. jhorescens, and for preparing the crude cell-free extract have been described previously (1). Partial Purification of Crude Enzyme Preparation-Powdered ammonium sulfate was added to a given volume of the crude cell-free extract to obtain 20 per cent saturation. The resulting precipitate was collected by centrifugation for 30 minutes at ...

Since the past couple decades, there has been rising concerns about the increase in incidence of Type II Diabetes Mellitus worldwide. However, there has been contradictory evidence regarding how the macronutrients in the diet, such as carbohydrates, fats and proteins, and the quality of the food especially fat, such as the type of fat saturation, affects the onset of diabetes. In order to inves...

We investigate the effect of different saturation histories relevant to various oil displacement processes (including secondary and tertiary gas injections) on three-phase gas/oil/brine relative permeabilities of water-wet sandstone. It is found that three-phase water (wetting phase) relative permeability is primarily a function of water saturation and shows no dependency upon saturation histor...