In order to explore the method of determining the parameters of two-dimen-sional dispersion,the laboratory test has been done in a large seepage trough(340cm×90cm×60cm)with sand-cobble stone as porous media and sodium chloride as tracer.
The characteristics of the chemical vapor infiltration (CVI) process and some typical aparatus were reviewed with emphasises on the processes of ceramic matrix composites in the systems of fSiC/SiC ,fSiC/Si3N4 ,fAl2O3/Al2O3,fAl2O3/MoSi2 etc.
Initial infiltration and stable infiltration capacities were 60 86 mm·min -1 and 24 32 mm·min -1 ,which were 2 8 times and 2 3 times for pure Chinese fir,and 2 5 times and 1 6 times for pure moso stand,respectively.
It was suggested that the mechanism for the eruption of heat was that La3+ ion damages the outer cell membrane and increases its permeability and the proton-electron potential energy across the cell membrane was reduced or couldn't even be initiated.
popularis, but a lower salt-induced increase of MDA and permeability was observed and lighter leaf necrosis occurred.
Preparation and permeability of ZSM-35 zeolite membranes on porous stainless steel tubes
However, a large volume and high energy consumption are needed in biotransformation, while the low permeability and stability must be solved in the membrane process.
Many characteristics were investigated, including thermal stability, liquid uptake, methanol permeability and proton conductivity.
Plentiful seepage phenomena were observed in the microcosmic experiments.
Coulomb-type solutions for passive earth pressure with steady seepage
Present paper deals with the computing of passive earth pressure acting on the vertical rigid retaining wall supporting the soil mass subjected to water seepage.
The complicated process of pollutant spread was modeled as an aggregate of four simpler models such as overland water flow, influent seepage, pollutants transport with surface runoff, and pollutant deposition (accumulation) on the land surface.
Shape of the fresh-water lens resulting from canal seepage
When the soil is covered only by litter, both the maximal rainfall amount and intensity in different forest stands are different if there is no water infiltration and runoff from the ground surface.
Impacts of fractal features of soil on moisture infiltration capacity of typical stands in Jinyun mountain of Chongqing city
The effect of soil fractal features on soil infiltration velocity and process was studied.
According to the soil infiltration process curve, the infiltration process was divided into three phases: (1) the initial phase (0-5 min), (2) the transition phase (5-30 min), and (3) the stable phase (30-180 min).
Soil infiltration process is influenced comprehensively by soil PSD, ASD, and SPD.
The copolyimides were characterized by Infra-red (IR), Nuclear Magnetic Resonance (NMR), Gel Permeation Chromatography (GPC), Ultraviolet Visual (UV-Vis), Thermogravimetic Analysis (TGA) and Dynamic Mechanical Analysis (DMA).
Similar sequence also obtained on the water-holding capacity and permeation capacity of soil (0-40 cm).
Permeation mechanism of a two-state potassium channel
A two-state hopping model was proposed to study the permeation of ion channel.
The resulting copolymers were characterized by FTIR, 1H NMR and Gel Permeation Chromatography (GPC) analyses, and it was found that the enchained ratio of AMO in the copolymers is far lower than its feed ratio.