This study focused on the melamine-cyanuric acid crystals formation by melamine does alone, and to explore the resource of cyanuric acid and kidney failure repair.

The gases of nitrogen, oxygen, argon and carbon dioxide were employed as coolant and lubricant in metal cutting. Therefore, the smaller kinetic diameter of gas, leads to the lower cutting forces and deformation coefficient. A conical capillary model is proposed, based on the experimental results and...

This paper is concerned with the leader-follower flocking problem of networked nonholonomic multi-agent systems with non-identical unknown nonlinear dynamics. The leader motion to be synchronized is also non-linear and unknown. By employing the graph theory and a pinning control technique,a distributed...

The seismic performance of 7-story reinforced concrete shear wall structure is studied, by the shaking table test of the reduced-scaled model. Two test conditions are considered, namely, fixed base and considering soil structure interaction. Under above two conditions, the acceleration time history response...

Objective To establish methods for the quantitative and qualitative identify of Gukefuyao preparation. Methods Characteristic absorption peaks of Gukefuyao preparation powder and its different extracts were identified, compared and analyzed according to the peaks’ shape, position and intensity in infrared...

In combination with the composite material technology, add the glass fiber grid into gussasphalt deck pavement system to form glass fiber grid reinforced gussasphalt. Analysis shows that adding the grid can increase the bending performance. Three point bending test was did to do verification and results...

In this paper explore the terahertz (THz) wave generation based on cavity phase matching (CPM) difference frequency generation (DFG) in a GaAs crystal sheet. This scheme applying cavity phase matching (CPM) is proposed. The wave propagation of the higher frequency pump wave is parallel to the wave propagation...

The tungsten tailings include amount of SiO2,CaO, Al2O3.Tungsten tailings were modified by aluminate as modifier.The activation index of tungsten tailings powder was 64.5%,when aluminate dosage was 1.2%.FT-IR results showed that there were two new peaks which were vibration characteristic absorption...

Base on Hysplit model with Backwards Trajectory showed Yinchuan was dominated by westerly continental vapor throughout the year, and also was influenced by the maritime vapor in spring and summer. Owing to the high temperature, Yinchuan was remarkably effected by local evaporation of water vapor in spring...

By dint of isotope data of the atmospheric precipitation and NCEP reanalysis data, the changes characteristics of precipitation in Baotou were analyzed. It showed a positive correlation between the weighted average of 18O and precipitation, which was related to the semi-arid climate of Baotou. The slope...

The aim of this study was to analyze the heat transform models of phase change diving suit on the basis of the steady-heat transform theory, and determined the suitable melting temperature and latent heat of phase change materials impregnated in different suits. An insulation performance test was conducted...

Usually joints will produce decisive effects to failure properties of rock masses. This paper finished numerical tests of failure process on jointed rock masses with different inclined angles in directly tensile, found that the location and direction of main crack on rock masses without joint were uncertain...

A compartmented gas reservoir is defined as a reservoir involving two or more distinct blocks in hydraulic communication. A common one is a fault block gas reservoir separated into different fault blocks by partially sealing faults. The fault plane in fault block gas reservoir works as the migration...

According to the characteristics of the inevitable fuzziness and andomness in the slope stability evaluation,we proposed the model of rock slope stability evaluation based on cloud model, combined the combination weighting game theory considering subjective and objective weight,evaluate the slope instances.The...

Active crude oil water plugging is a kind of water plugging technology without damage to the reservoir selectivity, and can achieve a good water plugging and enhancing oil production of purpose. Aiming at some problems existing in water blocking activity of crude oil research, research and solve some...

Taking the mining influence on the gas desorption characteristics of coal body into consider, a new gas adsorption and desorption system of coal sample under compression was manufactured. Using this test system, the gas desorption characters of coal samples were experimented under different gas pressure...

In this paper, the combustion features of dimethyl ether (DME) and liquefied natural gas (LNG) have been investigated by theoretical analysis. For the fuel consumption, the heat loss of the waste gas and the NO emission, we find that these indexes of LNG are higher than that of DME. However, the thermal...

a vacancy line defects on the [ ] and [ ] direction; the GaN single-layer terraces defects of GaN(0001) surfaces are studied by first-principle calculations based on density functional theory. The surface energy, charge density, and Mulliken charge population of defect surfaces are calculated, and the...

A novel magnetic nanocomposites (MNCs) adsorbent was synthesized for the removal of methylene blue (MB) dyes from wastewater. The inner core Mn0.6Zn0.4Fe2O4 magnetic nanoparticles (MNPs) were coated with an outer shell of silica based on a facile method using tetraethylorthosilicate (TEOS) as a precursor...

Fault in Tahe Oilfield southeast slope has a positive meaning for more oil and gas reservoir, it can be divided into eight groups. Three of them have significant control action for the gas-water including north-south, NNE and NEE. They have closely related with fracture and karst reservoir seam holes,...

Polymer flooding, as a promising method, can deliver conventional oil-displacing agents effectively to contaminants distributed within heterogeneous soil. In this study, combinations of polymer (xanthan) and common remediation agents (potassium permanganate and/or sodium persulfate) were used for polymer-enhanced...

Bluish-green BaSi2O2N2:Eu2+ phosphors were synthesized by a method using Ba2SiO4 as a precursor. The luminescence properties and formation process of BaSi2O2N2:Eu2+ phosphors formed by the method at varied Eu2+ concentrations and varied temperatures were investigated by X-ray diffraction (XRD), fluorescence...

To investigate the pollution situation of Pb in Zhengzhou city and obtain high bioaccumu- lation green plants, the Pb contents of plants leaves from the green belts on major traffic roads in Zhenzhou city, were analyzed by using graphite furnace atomic absorption spectrometry . The results showed that...

The effects of applying four accumulator species (Conyza canadensis, Cardamine hirsute, Eclipta prostrate and Nasturtium officinale) straws in cadmium (Cd) contaminated soil on phosphorus (P), potassium (K) and nitrogen (N) uptakes of Galinsoga parviflora were studied through the pot experiment. Five...

The effects of intercropping with accumulator species (Capsella bursa-pastoris, Cardamine hirsute and Galium aparine) on phosphorus (P) and potassium (K) uptakes of Galinsoga parviflora under cadmium (Cd) contaminated soil were studied through the pot experiment. Seven treatments were used in the experiment:...

A novel sulfur ion exchange fiber - thiosemicarbazide chelating ion exchange fiber (TSCIEF) was prepared by nucleophilic substitution reaction of chloramethylated polypropylene graft styrene (CPP-g-St) fiber and thiosemicarbazide, using anhydrous ethanol as swelling agent. The structure of TSCIEF was...

The effects of applying four accumulator species (Conyza canadensis, Eclipta prostrate, Nasturtium officinale and Cardamine hirsute) straws in cadmium (Cd) contaminated soil on phosphorus (P) and potassium (K) uptake and soil enzyme activity of Capsella bursa-pastoris were studied through a pot experiment....

The adsorption of CO2 on Bi-end and MoO-end Bi2MoO6 (010) surfaces has been investigated by density functional theory (DFT) calculations. The results indicate that CO2 exhibits physical absorption on both of the two surfaces, and Bi-end surface is more slightly active than MoO-end surface. Our results...

CFD modeling method was applied on simulation analysis for ice can structure impacting on flow field of ice tank in this article. The cross section of existing ice cans was rectangular structure. Velocity between frontal side and lee side of ice cans was close to zero, fluid resistance was large. Contrast...

The intergranular corrosion behavior of 430 ferritic stainless, with 0.025% up to 0.065% nitrogen contents, was studied by DL-EPR testing, SEM and EDS to elucidate the influence of nitrogen. The results indicated that, with the increase of the nitrogen content in the steel, the susceptibility to intergranular...

The realization of the special physical properties of metamaterials depends on the artificially designed constitutive relations, and their mechanical properties become the key research point. In order to enhance the analysis efficiency of mechanical properties of three-dimensional (3D) pentamode metamaterials,...

Luminescent gold nanoparticles(NPs) modified by Polyvinylpyrrolidone (PVP) with high stability and well dispersed property were successfully via synthesized hydrothermal method. UV-visible spectrophotometer, fluorescence spectrophotometer, fourier transform infrared spectrophotometer (FT-IR) and transmission...

For investigating the effects of gradient energy coefficients on the void-matrix interface thickness during Czochralski silicon single crystal, an established phase field model and the corresponding program code were used to simulate the evolution process of a single void. Based on the given criterion...

This article discusses the role of reactive oxygen species in plants,composition of antioxidant system,composition and role of antioxidant enzymes, and effect of heavy metals stress on the individual antioxidant enzymes activity.Under normal circumstances,in plants bodies, reactive oxygen species production...

Femtosecond pulsed laser(800nm, 120fs, 1000Hz) was used. And methods of element doping, abaxially rolling and moving were applied. Problems of conflict between transmission and inner-stress, and large area asymmetric of diamond like carbon (DLC) films deposited by pulsed laser were overcome. Hydrogen-free...

The deformation behavior of aluminum alloy 5052 is studied by isothermal hot compression in a wide range of temperatures ranging from 300 °C to 450 °C and strain rates ranging from 0.01 s-1 to 1 s-1. The results show that the peak stress increases with the strain rate while decreases with the temperature....

A modulated float-assisting, Bulletproof, stab resistant cloth is designed; the preparation method and corresponding product are brought forward. The cloth is composed of the coat, the standardized modules and components. The cloth has a neck protection body, the coat and crotch portion protecting body....

The calculation method and formula of orifice area and area gradient of double triangular groove and U shaped groove assembled shape orifice is analyzed, the calculating program of valve orifice area is established in MATLAB software. It uses polynomial segmentation to fit the combination valve orifice...

The hydrogen peroxide photometric method for analyzing main constituent titanium in vanadium alloy were investigated in the paper, including the sample digestion method, chromogenic conditions, Lambert-Beer’s law range, matrix interferences, method precision, recovery of standard addition, sample analysis...

The nylon-12 as raw material of balloon catheter and paclitaxel as coating drug, the paclitaxel drug-coating balloon was made by directing coating method. This paper investigated the effect of paclitaxel drug-coating on the balloon physical performances by Hydraulic Pressure Tester, Laser Diameter Gauge,...

The plasma spraying Al2O3-13%TiO2 (hereinafter referred to as AT-13) ceramic coating on Q235B steel surface was dealt with laser remelting technique , then change of the microstructure and properties of the laser remelting AT-13 coating was studied. The experiment results show that the microstructure...

The separation performance of the teetered bed separator for coarse coal slurry has been investigated. Experimental results show that the stability of the teeter bed has huge impact on separation efficiency. A number of data describe that the recovery of the separator involves both particle density and...

A kind of green compound corrosion inhibitor has been made from sodium molybdate, benzotriazole, calcium gluconate, sodium polyphosphate and zinc sulfate. The inhibition capability of the corrosion inhibitor in seawater for carbon steel is carried out by weight-loss method and electrochemical method....

Ultrasonic surface rolling process (USRP) as a novel surface nanocrystallization method generates severe plastic deformation in material surface through combined static extrusion and dynamic impact. Since the dynamic impact acts at ultrasonic frequency, the elastic-plastic deformation is mainly induced...

The optical fiber has been extensively used as a sensor in some special fields. Because the optical fiber exists crackles itself and also produce the micro-crack as well as local damage, the fatigue behavior of the optical fiber become the main problem we care about. This paper presents the experimental...

Fiber-optic sensors are widely used in the long-term health monitoring of major engineering structures, and it will generate heat fatigue damage under the influence of the environment, which greatly affect the stability of the optical fiber sensor. In this paper, experimental analysis for optical properties...

To refine the microstructure and improve the mechanical properties of the metal tubes, a new kind of severe plastic deformation process of the cyclic rotating bending (CRB) process was newly proposed. This study focused on the investigation of evolution of microstructure and mechanical properties of...

A finite element model was built for the sheet metal multi-point stretch forming (MPSF), and the numerical simulation of the MPSF for the saddle and spherical surface workpiece were performed. The simulation results show that to hyperbolicity workpiece, the influence on precision is different in dissimilar...

During the power spinning process of large ellipsoidal heads with variable thicknesses (LEHVT), material parameters of the blank have a significant effect on the quality of LEHVT and the determination of forming parameters. In this paper, the influences of hardening exponent, yield stress and elastic...

Under processing condition that were the average power of 20 W, repetition frequency of 2 kHz, pulse width of 80 ns, spot diameter less than 20 m, cutting speed of 10 mm/s, we succeeded in making 300 m thick gold interconnectors for solar cell panels, by utilizing an optical fiber laser with high power...

In order to improve the contact state of the friction surfaces of various parts, reduce friction and wear, improve the mechanical efficiency of power transmission system, and the reliability life of the vehicle,the reliable running-in must be carried out in a short time.In this paper,different running-in...

We can get conclusion from experimental effect comparison of electrostatic spray and general pressure spray that electrostatic spray can reduce droplet diameter and narrow droplet spectrum scope as well as increase droplet evenness; influenced by electrostatic absorptive effect, droplet coverage rate...

The present work reported and discussed the results of investigation of employing nano-ZnO and general ZnO (AR grade) to prepare Ni0.15Cu0.35Zn0.5Fe2O4 ferrites. The samples were prepared by using conventional ceramic processing route and sintered between 1150-1250oC. The comparison of sintered samples...

Carbon nano fiber (CNF) was modified by acid oxidation and maleic anhydride (MA) graft in current modification. The CNF filler surface properties were characterized by energy dispersive spectrometer (EDS) and X-ray photoelectron spectroscopy (XPS). In addition, the properties of epoxy resin with modified...

A novel special purpose equipment for inner hole plating of rectangular crystallizer copper tube in continuous casting machine was put forward. The design requirements and the main structure of the special purpose equipment were introduced. The principle and structures of the automatically centered mechanism...

The contraction-expansion flow is a benchmark problem for exploring the rheological behavior of polymer melts by numerical method. In this study, DCPP and S-MDCPP models were adopted to describe the rheological behavior of branched polymer. The discrete elastic-viscous stress split (DEVSS) , streamline-upwind...

Three kinds pit array on the surface of cylinder liner were prepared by using laser device, the diameter were 250 m, 350 m and 400 m respectively. Then, the textured surface was nitriding treated by using nitriding salt bath device. The friction coefficient of the piston ring and the three kinds of surface...

The metal particles flow law of the turbine forging process is very hard got to know, due to the complex shape and large deformation of this process. For this situation, a 3D finite element mold was build for this forging process with DEFORM-3D. The results shows that the metal particle flow law in three...

The saturated magnetization and coercive force of TP347H tube from SC units and is temperature oxidation have been measured by vibration specimen magnetometer. The oxidation has higher Ms and lower Hc compared with the base metal of TP347H. The basic difference of the oxidation and the stainless tube...

The outer surface of the continuous caster brass processing, for example, research and discussion process for the grinding of non-ferrous metal surfaces.

In this study, a catalyst was fabricated based on Pt nanoparticles on MoS2/graphene (MoS2/GN). The Pt-MoS2/GN was formed from graphite by modi ed Hummers and Offeman’s method, hydrothermal method and polyol synthesis method. The graphene oxide (GO) sheets were synthesized by modi ed Hummers and Offeman’s...

The SbFeO3 was reduced to obtain the SbFe and Sb2Fe alloys, and the SbGeO3.5 was reduced to obtain the Sb-Ge metal composite powder. The simulation lithium ion battery was prepared by using the SbFe and Sb2Fe alloys or the Sb-Ge metal composite powder as anode material. The analysis of the XRD and the...

The service life of hot-end components in gas turbine for gas-fired power plant is hard to detect and evaluate. The relationship between temperature characteristics of hot-end components and the power load is established using the basic theory of gas turbine power cycle. The operating mode of gas turbine...

The simulation of thickness control of different thickness galvanized steel sheet was researched in this paper the simulation method featured by making use of bilateral calculation model to research Gas-jet wiping pressure of air knife. Regularity of the effect of steel strip and baffle gap on the thickness...

In this paper, the dispersion stability of multi-walled carbon nanotubes in combination with different metal particles was investigated. The available time of dispersions of metal-coated carbon nanotubes prepared by water bath ultrasonic dispersion was obtained. The UV-vis spectrophotometer was then...

In this paper, based on finite element (FE) software MSC.Marc, a two-dimensional nonlinear thermo-mechanical coupled model is established to investigate the hot shrink-fit process for the reactor coolant pump rotor-can. By using this model, the limited time and temperature evolution for hot shrink-fit...

Al alloy anodized coating was prepared in boric-sulfuric acid with the addition of silica sol or not. The current and voltage transients of the anodizing process were collected by ZF-10B data collection instrument. The corrosion resistance was examined by neutral salt spray, electrochemical impedance...

High voltage and large current dynamic test for SiC diodes and hybrid module was studied. Then high voltage dynamic test for 1700V-25A 4H-SiC junction barrier schottky (JBS) diodes and high current dynamic test for a 1700V-200A half-brige SiC hybrid module were performed. With the change of test conditions,...

The hot deformation behavior of INCO718 alloy was investigated by hot compressive tests with Gleeble 3800 thermal simulator in the temperature range from 950 C to 1150 C and strain rate range from 0.1 s 1 to 10 s 1. In consideration of the temperature, the flow stress curves were corrected by one simple...

In this paper, the solidification structure of hypoeutectic grey iron under different vacuum conditions in lost foam casting (LFC) were discussed. In order to better research solidification structure under different cooling conditions, we designed different thickness step test casting and took actual...

Different temperature and time parameters were adopted in the stress relieving annealing processes of 5B70 and 5A06 aluminum alloys. Then, the mechanical properties and the variation regularity of residual stress of 5B70 and 5A06 aluminum alloys before and after stress relieving annealing were studied....

In order to predict incremental spacing in press bend forming of Aluminum alloy integral panel the typical integral panel test piece was taken as an example. By using numerical simulation method this paper analyzed the effects of different incremental spacing on integral panel forming quality which included...

CFRP laminates are used for various aircraft structural components because of their good mechanical and physical properties. Metallic inserts are one kind of aerospace fasteners, which are usually installed in the metallic components by an interference fit. However, when metallic inserts are installed...

The HA composite coating with different TiO2 contents was prepared by electrophoretic deposition in this study. The composite coatings were characterized by scanning electron microscopy (SEM), Ca/P atomic ratio in composite coatings was analyzed by Energy Dispersive Spectrometer (EDS), and the adhesion...

Basic copper carbonate [Cu2(OH)2CO3]with sphere-like morphology had been prepared via a direct precipitation route by controlled reaction conditions. Crude materials were cupric chloride solution and sodium carbonate solution. The factors like reaction temperature and reaction pH were studied. Scanning...

Polyurethane hydrogel(PUHG), which exhibits pH, temperature and ionic intensity sensitive, was synthesized by using the toluene diisocyanate(TDI), polyethylene glycol(PEG-6000), dimet hylol propionic acid(DMPA) and triethylene tetramine(TEFA).The effect of pH, temperature, ionic intensity and crosslinking...

Some new heterogeneous catalysts used to synthesize the tributyl citrate (TBC) and aspirin were prepared and characterized by brunauer-emmett-teller (BET), field emission scanning electron microscope (FE-SEM) and X-ray diffraction (XRD). The effect of temperature, catalyst loading and the concentration...

Before fluorescence detection of Titanium alloy components, acid pickling in HF-HNO3 solutions is always required in order to remove the superficial oxides of the components. According to the relative CPS document, the conditions for Titanium alloy pickling are HF arranged below 90g/L, HNO3 300-450g/L...

This work is the scenery complementary gas of biomass energy -equipment industry which is mainly to complete the biomass energy equipment,in order to provide the conditions of production and service for new biomass energy device. At the same time, based on China's renewable energy development , current...

In tissue regenerative cell therapy is an important limitation is the initial hypoxia. In order to increase growth and cell survival after implantation of our oxygen release material were tested. Calcium peroxide polymer matrix used as the oxygen source. Two polymers to slow and prolonged release oxygen,...

Alkaline peroxide mechanical pulp (APMP) is a kind of high yield pulp that comes with the comprehensive utilization of plant material, such as poplar. APMP has lots of benefits, such as easy preparation, good bulkness, good stiffness, excellent optical performance and good printability. However, it also...

At present, the wastewater, produced in pulp and paper industry, which contains lignin molecules, is still difficult to treat due to the structure complexity of lignin. In this paper, the industrial alkali lignin (AL) was treated with a Violuric acid(VA)-mediated electrochemical degradation system, and...

The ranking system of granite grindability is very important for high-efficiency grinding key technology. A new method by the combination of Fuzzy Analytic Hierarchy Process (FAHP) method with TOPSIS methods is developed to establish the dependence function and fuzzy relationship. The grindability of...

The devices based on dopant bis[2-(4-(2'-ethylhexyloxy)phenyl)-5-trifluoromethyl- pyridinto-C3, N] iridium (acetylacetonate) (EHO-5CF3-ppy)2Ir(acac) were fabricated by spin-casting and depositing technique. The dopant was chosen at the different concentration (2 and 8 wt. %) and doped in host materials...

Many red fluorescent materials were weak and even no luminescence in solid state due to concentration quenching. So a novel red fluorescent pigment bis(4-(N-(9-phenanthryl)-3,5-dimethyl- phenylamino)phenyl)fumaronitrile (PhMPAFN) was synthesized. PhMPAFN with a pair of antiparallel dipole suppressing...

The small-sized drilling rig such as XY-100 is widely used in survey engineering. With the development of underpinning technique, more and more micro-pile should be drill near buildings and structures. The higher rig shelf should be upgraded for suit with limited space. The excavation of deep foundation...

Performance-price ratio, safety and tensile mechanical properties of the new 3-strand fishing PP/PE composite monofilament rope (“PP/PE composite monofilament rope”) were studied in this paper. PP/PE composite monofilament rope was made with the fishing polypropylene/Polyethylene (PP/PE) composite monofilament...

Melt quality has a crucial influence on the subsequent processing of casting ingot and the performance of the final product. Filtration is one of the most common and important purification methods to remove inclusions in aluminum liquid during melt processing. In this paper, based on the characteristics...

The effect of quenching condition such as air cooled (AC) and water quenched (WQ) treatment on the corrosion behavior of 6063 Al alloy was investigated by optical microscope, field emission scanning electron microscope and electrochemical work station. The experimental results showed that the corrosion...

Spraying microcapsules with polymeric shell onto a solid wall may be a way to fabricate multilayer films. Better understanding of the deformation and breakup of the microcapsule under spraying is of great importance for developing this technique. A two-phase finite element model was developed using the...

Effect of alloying techniques of dollop-like yttrium, as-cast and extruded Mg-Y master alloy in AZ91D magnesium alloy on microstructure and the efficiency of alloying was studied by optical microscopy, scanning electron microscopy, XRD and inductively-coupled plasma (ICP) spectroscopy. The as-cast AZ91D-1.2wt.%Y...

Spiral milling is an efficient milling strategy due to reducing non-cutting tool paths. After investigating the characteristics of roughing, semi-finishing and finishing, a new machining process named extended finishing is proposed. The extended finishing has powerful flexibility to realize various machining...