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Table 1 the test results of different types of functional polymers Models Sample ID solid content (%) hydrolyzing degree (mol%) viscosity (mPa.s) Water insoluble (Wt%) dissolving rate (h) Grain grade % ≤0.2mm ≥1.0mm Type II JHW2007-1 88.72 20.5 61.0 0.09 <2 2.7 1.8 Type III JHW2007-2 90.93 33.2 48.9 0.09 <2 2.4 3.3 Evaluation of viscosity properties.
Table 5 flow experiments of functional polymer (Type II) Core numbers Permeability(md) Concentration (mg/L) Resistance factor Residual resistance factor 27j051114-9 102 1000 612 310.7 27j051114-1 216 1500 395.2 216.7 27j051114-3 314 2000 322.8 177.2 Table 6 flow experiments of functional polymer (Type III) Core numbers Permeability(md) Concentration (mg/L) Resistance factor Residual resistance factor 070727-2 98.7 1000 424.0 177.2 070613-B-2 214.5 1500 382.8 143.6 070613-B-3 333 2000 240.3 121.1 2.
Table 7 Functional polymers (type II, type III) experimental results of displacement Program Core numbers Permeability（md） Porosity（%） Oil saturation（%） Water displacement recovery（%） Chemical flooding recovery（%） The total recovery（%） Program 1 070911A-5 537.73 24.4 74.2 46.4 21.8 68.2 070816C-3 953.79 24.8 75.5 49.8 24.9 74.7 070508-1 2138.16 27.5 76.2 50.9 27.7 78.6 Program 2 070911A-4 523.31 23.6 74.5 47.0 19.8 66.8 070816C-6 951.62 24.9 75.4 49.3 20.6 69.9 070508-2 2138.40 28.3 76.8 50.3 26.6 76.9 Study on swept volume experiments of functional polymers after conventional polymer flooding.

After calcined at 600ºC, only X-rays peaks of Nb2O5, which could be matched with JCPDS file number 71-0005.
While calcining at 700ºC, the phase of Zn3Nb2O8 appears as shown in fig.4; these observations are associated with DTA peaks found at the same temperature range within the broad exothermic effects in fig.3; in a first approximation, this Zn3Nb2O8 phase has a corundum structure with a monoclinic unit cell (a=19.09 Å, b=5.927 Å, c=5.220 Å, β=90.000°, space group C2/c (no.15)), consistent with JCPDS file number 79-1164; only at 850ºC, do the X-rays become single phase as the same as Zn3Nb2O8 (PDF number is 79-1164) phase; Fig.4 also gives XRD patterns of Zn3Nb2O8 powders at different synthesis temperatures prepared by solid-state method, after heating at 900ºC, there still can observe some other phase.
The particle morphology of the calcined powder (850ºC for 4 hours) prepared by co-precipitation process was regulated in shape, and the structure of the crystal grains is tiny, rod-like (Fig.5).

Introduction Dust explosion (or detonation) hazard has been inherent part in modern industrial activities, such as in coal mine, metal powder applications and grain processing plants.
Numerical Modeling The mixtures consisting of solid particles with small diameter and spherical shape suspended in gaseous situations are usually modeled using the continuum media theory when the number of particles is large enough.
Np, and are the number density, density and diameter of the particle, respectively. dp0 is the initial particle diameter.
Re is the relative Reynolds number. , and are the burning rate constant, the surface reaction rate and the activity energy, which should be considered experientially.

This layer has a smaller surface area, possibly reducing the amount of light absorbed and the number of electrons and holes generated.
Conversely, the electrode with smaller particles has a larger surface area and a greater number of contact points between sintered particles, allowing for greater dye adsorption.
This layer exhibits a larger number of grain boundaries that electrons need to pass through, which results in a higher probability of electron trapping [7–9].

The base powder used is direct metal 50,which is a bronze based metal powder with a grain size of 50 microns and a composition of Copper 22-90%, Tin 2-10%, Nickel 10-70%, Phosphorous 3-6 %.
Taguchi approach was adopted to reduce the number of trials of the design of experiments in which multiple factors are involved.
The DMLS process based metallic components are expensive and time consuming process, therefore we consider the orthogonal array with minimum number of trials.
The Brinell harness number is calculated by dividing the load applied by the surface area of the indentation.

A number of studies have been conducted in WLAN location method [5].
Consider FPA first; it can be observed that the average errors of location determination are 9.97 meters, 9.92 meters, 11.02 meters, and 12.70 meters when the different numbers of the nearest locations (k) are from 1 to 4.
Therefore, we set the number of the nearest locations (k) as 2 and apply FPA in CGS.
Strivastava: Dynamic Fine-Grained Localization in Ad-Hoc Networks of Sensors.

But the tailing grade was generally high,fine grained useful minerals in a serious loss, low metal recovery.
The working principle of flotation column is that the upper ore feeding tube feed pulp, uniformly flow through the flotation column, compressed air in inflatable chamber that is the lower end of the columnar body through a vertical air pipe filling column, formating a large number of small bubbles uniformly distributed across the entire cross section, pulp under the action of gravity falling slowly, air bubbles from bottom to top rising slowly, and constantly meet the useful minerals pulp in the column.
In convection, due to the pharmacy's role, the selected minerals attached to the rising bubbles to the surface, formating the mineralized foam layer in the column upper, overflow the spill to concentrate tank, other minerals (usually gangue or non ore ) discharge from the lower end tailings discharge tube. the upper ore feeding tube in the flotation column has a variety of tube depth, the number of occurrences are depending on the size of the column diameter.
The ore in three village which is belonged to Luoyang Luanchuan Molybdenum Group Limited by Share Ltd are mainly skarn type, molybdenum and tungsten ore deposit belongs to the symbiosis, molybdenum is easy to choose, tungsten ore has low grade, is hard to choose, using CCF column flotation to recovery low grade scheelite in molybdenum tailings, compared with the pneumatic flotation machine, greatly reducing the number of operations, through once roughing and once scavenging to instead of once roughing three scavenging and three preconcentration, decreasing two times of scavenging and three preconcentration, greatly improve the production index, increase more than 20% in the recovery, the CCF column flotation equipment with high efficiency and energy saving, power consumption is about 8.5kW per hour and per ton of ore, lower 43.33% than the inflatable flotation machine power consumption.

Table 1 Chemical compositions of specimens (Weight %) Number C％ Cr％ Si％ Mn％ P％ S％ No.1 2.42 14.87 0.48 0.71 <0.03 <0.03 No.2 2.63 15.32 0.44 0.79 <0.03 <0.03 No.3 2.81 14.68 0.39 0.84 <0.03 <0.03 No.4 3.20 15.24 0.46 0.69 <0.03 <0.03 Results and discussion The microstructure changes of the high chromium white cast iron with different amounts of carbon are illustrated in Fig.1 - Fig.4.
Fig.1 Microscopic structure of specimen No.1 Fig.2 Microscopic structure of specimen No.2 Fig.3 Microscopic structure of specimen No.3 Fig.4 Microscopic structure of specimen No.4 Table 2 Constitution of structure and HRC of specimens (A and M represent austenite and martensite, respectively) Number Constitution of structure（volume fraction） HRC Microscopic structure Fig.1 77.67％A＋22.33％eutectic carbides 45 Structure of matrix is austenite Fig.2 71.50％A＋27％eutectic carbides ＋1％M 51 A little of austenitic transmutation product with a finite thickness which is martensite appears around some austenite, which is different from Fig.1 Fig.3 33.67％A＋30％eutectic carbides＋25％～30％M 55 Most austenite has transformed into martenite，and about 40% retained austenite.
Which caused a lowering of the Ms point and made abundant austenite preserve to room temperature. one austenite grain with divided equally into seven points in specimen No.2 was selected and performed energy spectrum analysis, According to compositions of these seven points, the distribution of carbon and chromium concentration curve was described in Fig.5.
Fig.5 The distribution of carbon and chromium concentration curve in specimen No.2 Table 3 Average contents (wt %) and microhardness of austenite Number C％ Cr％ Si％ Fe％ Microhardness (HV100g) No.1 2.79 10.00 0.40 86.81 368.5 No.2 3.33 9.10 0.48 87.09 429.5 No.3 2.79 8.52 0.43 88.26 501.4 Supersaturated carbon in primary austenite may combine with iron and chromium atoms and form secondary carbides during solidification, the precipitation of secondary carbides leaded to deterioration of primary austenite stability.

For other formulas with zeolite, it was seen that when the percentage of zeolite was increased, the number of crystals or grains of ettringite (short needle-like) and mullite (long needle-like) [15] are more.
However, all formulas were observed C-S-H gel and crystals of mullite and ettringite and this research SZ 0.5 presented the highest compressive strength, it might be confirmed that the higher number of ettringite crystals affected the better results of strength of specimens rather than the mullite crystals.
Moreover, SEM analysis of cement mortars was obviously observed that the percentage of zeolite was higher, the number of crystals increased and SZ 0.5 presented the best result with full of crystals and gel of C-S-H with less porosity and good packing property. 5.

Non-rotational symmetry of the optical surface structure is extremely unique, you can simplify the system structure, reducing the number and size of the lens, improving the performance and quality to new product design and enormous potential, attracted more and more attention.
Due to the relatively high single-crystal diamond hardness, wear better and sharp blade, it is widely used in precision or ultra-precision machining, but the cost is very high natural single crystal diamond, now with synthetic diamond grains are constantly fine technology, the strength continues to improve, the industry has been widely used as a synthetic single crystal diamond precision or ultra-precision machining of tool material.
In using the spiral track on the NRS surface machining, since cutting away from outside to inside, with the advance, the position of the cutting tool edge radius of curvature where the smaller cutting tool increasing arc length of weekly working short, the number of points needed less and less.
Therefore, after the use of the law of discrete angles were improved, the resulting discrete points is reduced with decreasing radius, thus greatly reducing the number of points at the center, so that a consistent quality of the surface processing, shown in Fig.5 is a modified discrete points on a projection tool XOY surface distribution.