Search results

The lake basin shrank and water became shallow and the edge of multi-Delta basin formed a single entity, shaping a braided lake forwarding delta sediment system, of which the nearby distributaries channel shore were mostly thick-massive fine-grained sandstone [1].
Grained fine contains mica feldspar sandstone.
The authigenic quartz is the gap filling occurrence, illite has been distributed in intergranular, chlorite pore lining occurrence, siliceous and feldspathic to increase output or to grain filling in pore, zero base, particle, point - line contact, cementation type is mainly the pore type, etc. 1.3 Feature of the reservoir physical property 1.3.1 Porosity features According to the porosity analysis of 232 samples in the Dongrengou region, the maximum porosity of Chang 2 reservoir is 21.4% and the minimum is 4.7%, the average is 14.9%.
Table 3 Results of composite plugging organic and inorganic acid blockage plugging core number formula（%） permeability（μm2） damage（%） effect（%） CLO2 HCL HF K0 K1 K2 K3 K4 17-1 3.0 12 2 101.20 0.13 31.86 50.25 56.37 99.87 55.7 17-2 3.5 14 2 99.85 0.11 38.07 62.49 68.50 99.89 68.6 17-3 4.0 16 3 97.64 0.09 41.36 68.06 74.99 99.91 76.8 17-4 4.5 18 3 105.10 0.14 50.14 80.39 89.12 99.87 84.8 17-5 5.0 20 4 106.40 0.15 55.32 82.68 91.40 99.86 86.9 According to experimental data in table 3, the composite plugging acid solution is effective in removing organic and inorganic blockage.
Project number: 2013JK0877.

To characterize the increase in the number of crystals when a multicomponent alloy passes the crystallization interval, the crystallization rate was calculated.
Chemical Composition of Metallurgical Grade Silicon The main portion of metallic impurities is concentrated at the boundaries between silicon grains in the form of silicides (FeSi, FeSi2, FeAl3Si2, FeAlTiSi, FeSi2Ti, TiSi2, etc.) and other phase inclusions [6, 9].
The constructed diagram is divided into 4 elementary triangles of co-existing phases, and the same number of points of ternary eutectics is obtained (Table 1).
Initially, the number of boron crystals increases sharply; after the mixture reaches the straight liquidus, the boron con-tent decreases, but the portion of titanium increases (up to the eutectic point).
The constructed diagram is divided into 8 simplices (elementary triangles of coexisting phases), and the same number of points of ternary eutectics corresponding to different compositions is obtained.

A number of novel methods have been proposed for HAP ceramic coating offering the potential for better control of film structure.
(a) Preparing a homogeneous solution of easily purified precursors (b) Converting the solution to the ‘sol’ form by treatment with a suitable reagent e.g. water with HCl for oxide ceramics (c) Allowing /inducing the sol to change in to ‘gel’ by polycondensation (d) Shaping the gel (or viscous sol) to the finally desired forms such as thin film, fibres, spheres, or grains and (e) Finally converting (sintering) the shaped gel to the desired ceramic materials at temperature (̴ 500˚C) generally much lower than those required in the conventional procedure of melting oxide together.
The sol gel method of fabricating thin films offer potential advantages over traditional technique as below [13]: (a) Low temperature processing (b) Easy coating of large surface (c) Small thickness (d) High optical quality (e) High purity Particularly, HAP coatings by the sol–gel method have received global attention in the biomedical field and the coatings deposited by dip coating method offers a number of benefits over other coating methods.
Circular shaped HAPs are seen both at the boundary and over the grain.
Thus it is inferred from the above analysis that thickness increases with the repeated number of coatings. 2.4 EDX analysis EDX spectrum of HAP coated on alumina thermally treated at 200˚C is presented in Fig. 5.

Introduction The composition of essential amino acids in oats are basically the same as the standard that adults daily intake, it can effectively promote the growth and development of human body and the amino acids of the protein in it is the most balanceable of all the grains[1].There are more researches about the application of oats in oatmeal, beverage, noodles and bread[2-5], it has important researchful significance to add the oat flour to the Quick-frozen dumplings and develop a new kind of Quick-frozen oat dumplings and study the application of oat in quick-frozen prepared food.
Dumpling freezing and cracking rate calculated in accordance with the following: frozen cracking rate(%)=B/A×100% Where A is the number of experimental dumplings, B is the number of the cracking dumplings.
Rating Panel is composed of five members, randomly select a number of samples of dumplings to taste and score, taking the average with two decimal places.
Oat flour does not contain the gluten protein, after adding oat flour in the flour, it dilutes dough gluten network structure, the more grains add the more multiples that the gluten network structure is diluted and the higher the cracking rate of the quick-frozen dumplings.

Even though hot forming solves these particular problems, it has the potential to generate a number of additional problems.
For this novel process it is necessary to test a number of factors of the process.
But, if a slow air quench is used, precipitates are allowed to grow through the grain and at the grain boundaries for a longer time, thus making the material non-age hardenable. 10.0 s -1 1.0 s -1 0.1 s -1 0.01 s -1 0 10 20 30 40 50 60 -6 -4 -2 0 2 4 QuenchRate (ºC/s) Clearance (mm) Load (Tonnes) Quenching Method AQ 2.5 2.0 1.5 1.0 0.5 2.0 4.0 0.0 6.0 8.0 10.0 0,5 0,6 0,7 0,8 0,9 1 1 10 100 1000 Quench Rate (ºC/s) Achieved ultimate stress/ Ultimate stress when water quenched Fig. 5.
During the deformation, further dislocations are introduced into the material and (a) (b) Temperature Time Fast water quench Perfect quench Slow air quench hence a larger number of nucleation points are introduced.

The investigation on the performance of flood protection systems at home and abroad during a flood seanon made reference to a number of cases where signs of underseepage piping erosion may have occurred and contributed to the failure of the levees [1, 2].
According to a larger number of filed observations, initial phenomena of piping are different.
Some appear to be moderate, just out of water and sand boiling, the others show that a larger number of sand blast out intensely and the ground collapse.
Table 1 Grading analyze of model materials Material Grain size distribution Grain size coefficient d10/mm d30/mm d50/mm d60/mm Cu Cc Sand 1 0.34 0.52 0.75 0.90 2.65 0.88 Betonite 0.075 0.11 0.15 0.18 2.4 0.90 Sand 2 0.27 0.40 0.52 0.60 2.79 0.99 According to predetermined ratio, the bentonite, mixed with water and sand, is put into the bucket to stir until well-combined.

Therefore, the influence of stripe numbers on critical loads are further studied for higher anti-buckling enhancement.
Compared with the critical loads of the above models, it is found that with the stripe number rises, the critical loads increase at first and then decrease, thus too many vertical stripes will depress the anti-buckling enhancement.
While when the vertical stripe number rises, the critical load increases first and then decreases.
Ruan, Modeling grain size dependent optimal twin spacing for achieving ultimate high strength and related high ductility in nanotwinned metals, Acta Mater. 59 (2011) 5544-5557
Lu, Modelling the plastic deformation of nanostructured metals with bimodal grain size distribution, Int.

The total limiting water content within the rice grains was calculated and it agreed with that calculated from the known water/rice ratio used, indicating that both the concentration and distributions of water within the rice grains during cooking obtained from the NMR imaging were quantitatively reliable[6-8].
Parameter settings were: receiver frequency: 19.502MHz; pulse width: 50us; sampling number TD=8129; echoes number C0=380; repeated scanning number NS=16; repetition time D0=4s.

In nanocrystals, since the surface to volume ratio is much larger, there is an increase in the number of atoms on the surface compared to the number of atoms inside the particles.
Fig.4 shows a remarkable shift in peak position as well as in asymmetry of the Raman line towards higher wave number due to change in grain size [12] or the surface phonon effect due to small dispersion of LO phonon wave vector in the samples.
The change in grain size affects the vibrational properties.

Important parameters such as volume fraction, mean radius and number density of precipitates are experimentally determined and numerically simulated as a function of the heat treatment parameters time and temperature.
Introduction The term superalloy is generally used for a large number of different alloys.
The precipitation of a suitable quantity and size of coarse δ precipitates is used for controlling grain growth [3,4], whereas the precipitation of a large amount of fine-dispersed coherent γ' precipitates provides a large quantity of strengthening by precipitation hardening [5,6].
In Eq. 1, 0 represents the total number of potential nucleation sites.