Based on preliminary studies to optimize the ultrasonic extraction of polysaccharides Coix chinensis Tod. conditions using orthogonal test method, the test results showed that: In order to obtain a higher extraction rate, optimization of process parameters for each factor A3B3C2D1, namely ultrasonic...

The system of urban water supply network is an important part of the lifeline engineering. In the earthquake, the water supply network suffers devastating damage, and that will cause serious casualties and national economic losses. Moreover, China's water supply systems mostly are not formal seismic...

This study intends to quantify the energy consumption and environmental emissions in the entire life cycle of a scroll compressor produced in a Chinese factory and to determine the stage with the largest environmental impact. The results show that energy consumption, CO2 and dust are three predominant...

On the analysis of the electrochemical abrasive belt polishing technology, the main process parameters and equipments for the compressor crankshaft are selected; a set of finishing experiment plan is designed. The results show that the polishing process can reduce the surface roughness obviously, and...

Progress of studies in the mechanism of the membrane fouling of Membrane Bioreactor was introduced from aspects of membrane characteristics, the operating conditions and the properties of microorganisms the feedwater. The usual control strategies of the membrane fouling were summarized such as optimizing...

Take Hangzhou as an example, ecological safety evaluation of urban land provides the basis for promoting urban ecological security.21 indicators were chose to set up the evaluation system. By using BP neural network method, the study followed is trying to evaluate ecological security of urban land. The...

The urban spatial layout, traffic demand forecast, and traffic planning cannot work without the support of system science. There is the interaction between the urban spatial layout and the traffic demand. The former is the generating source of the latter, and the latter has a guiding role on the former....

The ecological garden is the inheritance and development of traditional garden experience; follow the principle of ecology, the construction of multi-level and multiple structures, multi-function plant community of science. To establish new order of the associated humans, animals, plants and ecological...

Paddy soil microbial community composition and functional diversity changes after a long-term fertilization were studied by BIOLOG. The results showed that the AWCD value eventually reached after a long-term fertilization was increased at some extent compared with the no fertilization. The diversity...

In order to provided background material of cyanide pollution history of Jiaozhou Bay, this paper analyzed the pollution and source of cyanide inJiaozhou Bay in 1982. Results showed that Jiaozhou Bay had not been polluted by cyanide in 1982. The contents of cyanide in June and October in surface waters...

The supported heteropoly acid catalysts were prepared by loading Phosphotungstic acid on the MCM-41 molecular sieve via the impregnation method, which were characterized by FT-IR, N2 adsorption-desorption and applied in the synthesis of butyl lactate. The results show that heteropoly acids supported...

Elastic index is the required important parameters in the theoretical analysis and design calculation of components. Mechanical testing method and electrical measuring method are commonly used in engineering mechanics experimental. This article discusses the ultrasonic method which is used to measure...

Fatigue failure is very common phenomenon in engineering field, and fatigue problem is more and more prominent with the development of modern social production to high speed, high temperature, high strength load. In process of college undergraduate course graduation design and innovative experiments,...

In this investigation, the removals of pollutants especially 2,4,6-trichlorophenol by MBR and a simultaneous application of powdered activated carbon with MBR using flat sheet membrane were contrasted. The results displayed that both the two systems could effectively remove ammonia-N, total organics...

Groundwater is an important source of drinking water in the coastal areas of Hainan Island. In order to fully understand the condition of groundwater and impact of seawater intrusion, chemical data of logging groundwater in the northeast coast of Hainan Island, which was acquired by continuous sampling...

The microstructure (before and after quenching), phase (before quenching), carbide content and hardness were studied by scanning electron microscopy, X-ray diffraction, optical software and Rockwell hardness tester. The results indicate that carbides of Cr5 steel have different morphology features and...

Mesoporous indium oxide has been successfully obtained by a simple nanocasting method. The characterization indicated that the powders havea good crystalline structure, and the synthesis was successfully controlled in nanoscale (meso-structure). The elcctrochemicalsensor based on mesoporousindium oxide...

The carbon nanotubes and carbon nanotubes reinforced aluminum matrix composite materials was described, the basic characteristics about carbon nanotubes preparation methods of aluminum matrix composites and preparation process problems and solutions. Finally, the carbon nanotubes reinforced aluminum...

The selection of cement slurry with different consistency and different concentrations of Sodium silicate, design and test research on the mixture ratio of cement-Sodium silicate grouting material, 4 W/C and 4 0Bé co design 16 groups of proportion, through the collation and analysis of experimental data,...

In the premise of selecting different consistency of cement slurry, deploy different concentrations of Sodium silicate, design 16 groups of ratio, design and test research on cement and Sodium silicate double liquid grouting material mixture ratio, through the collation and analysis of experimental data,...

On the premise of fixed slurry consistency and concentration of sodium silicate, adjust proportion design of fly ash content 8 groups, cement-sodium silicate double liquid grouting material experimental study and mixture ratio design, through the collation and analysis of experimental data, concluded...

On the premise of fixed cement slurry consistency and sodium silicate concentration, adjust the content of slag powder design 8 groups of ratio, cement and sodium silicate double liquid grouting material mix design and test research, through the collation and analysis of experimental data, obtained the...

Cuprous oxide (Cu2O)nanomaterial has been successfully obtained by a simple sol-gel technique. The characterization indicated that the powders have a good crystalline structure, and the synthesis was successfully controlled in nanoscale.Cyclic voltammetry (CV) revealed that Cu2O cubebox exhibited a direct...

Nanodiamond (ND) as a filler material provides a nucleation effect on polyphenylene sulfide (PPS) and promotes its crystallization. The effects of ND on crystallization behavior and kinetics of composites were investigated by DSC. The results show that ND acts as an nucleating agent for PPS to accelerate...

According to the cement sulfate corrosion resistance properties of Portland cement mixed burning shale to determine the erosion test method, and analyzes the influence of different system of calcined shale sulphate corrosion resistance properties of Portland cement. The results show that: calcined shale...

In order to obtain the higher activity DS enzyme through genetic engineering technology. The point mutation method is used to get a higher activity recombinant DS enzyme from Corynebacterium glutamicum. At last the point 183 was mutated from L to Q in LG-322.The mutation type is a fundermental of construct...

In this paper, CuW alloy is successfully coated on copper substrate by microwave sintering. A wedged load test and scanning electronic microscopy (SEM) are employed to investigate the interface bonding performance. The results show that the CuW coating bonds firmly to the copper substrate without any...

In this paper catastrophic optical mirror damage(COMD) mechanism of the semiconductor laser is analyzed. COMD is one of major device damage mechanisms, which is drastically limited laser lifetime and output optical power. The theoretical model that based on heat source with injection current and optical...

The high vacuum cleaving passivation characteristic on 980nm diode laser is presented. In this research, diode lasers are cleaved in high vacuum cleaving system, and then coated with thin ZnSe passivation layer in the front and the back facet. The function of the passivation layer is to protect diode...

The the tin and zinc enrichment in the Manjiazhai ore segment ore-bearing strata were studied in this paper, Exploration samples database for 3D model was designed. Variogram analysis show that the strata ore-controlling characteristic is significant. Tin is mainly enriched in the lower layers and zinc...

Total Alkaloids are important active materials of Actinidia arguta. However, no study has been conducted to explore the content determination method of the Actinidia arguta total alkaloid. An effective method was established in order to determine the total alkaloids from different parts of Actinidia...

To study on optimal conditions for extracting the higher content of total alkaloid from Actinidia arguta fruits, the effects of ethanol concentration, temperature, time and solid-liquid ratio on extraction efficiency total alkaloid were explored. The results showed that the optimum extraction conditions...

China railway passenger cars from 25B green cars to the development of high speed EMU, the battery is still followed the lead-acid battery and cadmium nickel battery, battery containing heavy metal railway passenger cars will bring great harm to the environment. Through access to a large number of data...

Manganese (Mn) is known to be essential for maintaining the proper function and regulation of many biochemical. To investigate the toxicity of Mn on bird brains, 50-day-old cocks were fed either a commercial diet or a Mn-supplemented diet. the following were determined: Mn concentration, Ca2+ concentration,...

To investigate the Manganese(Mn)-induced toxicity on crucial oxidative damage parameters on brain of birds, 50-day-old male Hyline cocks were fed either a commercial diet or a Mn-supplemented diet. The following were determined: restraining ability to OH•, the activities of Na+-K+-ATPase, Mg2+-ATPase...

The new kind of bio-based polyamide56 fiber has been synthesized by adipic acid and 1,5-pentanediamine, which was prepared by fermenting a variety of starch. The spin ability, physical and thermal properties of bio-based PA56, PA 6 and PA 66 were evaluated through systematic investigation and measurement....

The brick crusher hammers were used in factory, which wear-resisting was poorer. According this phenomenon, the single structure was designed in symmetrical fission structure. Firstly, high chromium cast and low alloy steel were casted into half of the bimetal hammer head, then two new type bimetal hammer...

According to the working conditions and performance requirements of relieving, this topic designed four groups of chemical composition for the text and put forward a complete set of heat treatment process. And found a set of optimal component ratio and the heat treatment process by the experimental steel...

A novel photoelectrochemical biosensor incorporating nanosized ZnO semiconductor crystals with enzyme to enhance photochemical reaction has been investigated. In this work, the ZnO nanoparticles and acetylcholinesterase (AChE) were immobilized on Pt electrode by chitosan (CHI) via layer-by-layer technique...

A novel tyrosinase (Tyr) biosensor based on liposome bioreactor and chitosan (CS) nano-composite has been developed for the detection of phenolic compounds. The encapsulation efficiency and drug loading content of the Tyr-loaded Liposome-based bioreactors were about 46.35± 0.85% and 41.15±0.95%, respectively....

An electrodeposited Ni-Fe alloy with a nickel content of 75% was introduced in this paper, thickness of this Ni-Fe alloy is 1mm. Microstructure, tensile mechanical, and hardness and the phase were studied by using field emission scanning electron microscopy (FE SEM), tensile test, hardness tester and...

The interaction among Lanthanum, Arsenic and Iron at high temperature in a pressure-tight reactor machined by H08 steel were studied by means of electron probe microanalysis, optical microscopy and X-ray diffraction to understand what compounds could be developed on the condition that the atomic ratio...

In order to study the failure modes and hysteretic behaviors of square tubular T-joints, three specimens were made to conduct the cyclic loading test. The test stimulated the constrain condition with hinge connection of both ends of chord member, and the brace was subjected to axial cyclic loading. Based...

Recently, coal mining in Jining has extended to the crowded cities and villages, bringing out the deformation of the rock in these areas, which leads to the damage of the civil and industrial buildings. Therefore, the ground surface deformation and the damage characteristics of the buildings have been...

Based on the two major methods for the construction of domain ontology, that is, ontology engineering and thesaurus-based ontology construction, this paper puts forward a construction methodology of agricultural domain ontology based on thesaurus. This paper details all parts of the methodology. Under...

Modified mechanism of asphalt of PPA in conjunction with SBS is studied on from the microscopic view by experiments. These experiments include four constituents fluorescence microscopy infrared spectroscopy and DSC. The results show that the proportion of asphaltene increase and the proportion of colloid...

As a new welding method, combustion synthesis welding technology caused widespread concern at home and abroad in recent years. The combustion synthesis technology, the concept of combustion synthesis welding, classification, welding process characteristics and influence factors were introduced. The combustion...

The leakage reasons for a boiler enclosure wall superheater were discussed based on experimental results of macro fracture observation, chemical composition analysis, metallurgical microstructure examination, SEM and EDS analysis. It was presumed that weld flaw firstly formed due to large weld process...

Properties of the products derived from the reaction of 6-aminopenicillanic acid (6-APA) with varying number of H+ have been researched by B3LYP method of the Density Function Theory (DFT) on the basis of 6-31G* sets. It is found that the products are all unstable, and easily open their beta lactam rings....

This investigation was undertaken to evaluate a new kind of polycarboxylate superplasticizer .Used polyoxyethylene ether (TPEG), acrylic acid (AA) functional monomer (A)and as the monomer, hydrogen peroxide (H2O2) as initiator, Vitamin C (Vc)as reducing agent, TGA as chain transfer agent, synthesised...

In order to study the effect of the temperature of reaction system on the properties of polycarboxylate-based superplasticizers (PC) and on the cement workability, the PC are synthesized in different initiatory temperature from 10 to 40 . Fourier transform infrared spectroscopy (FTIR), and gel permeation...

In this work, we synthesized a new viscosity modifying agents with AA, AM as monomer and ammonium persulfate as initiator. Through the discussion on the AA dosage, the polymerization conditions, we determined the optimum technological conditions of the new VMA: the optimum molar ratio of AA to AM is...

Under the condition of unchangeable reaction time, the dosage of initiator and chain transfer agent, the molar volume of unsaturated double bond, we synthesized a series of polycarboxylate superplasticizer via free radical polymerization. These polycarboxylate superplasticizer had a similar structure...

The effect of three typical commercial clays (Na-MMT, Illite and Kaolin) upon the dispersion of polycarboxylate (PCE) was investigated by mini slump test and viscosity analysis. PCE adsorption on clays or cement was determined by method of total organic carbon. Mini slump test results showed adding more...

Air-entraining agents have been regarded as essential for the workability of concrete since the 1930s, the uniform, stable tiny bubbles in concrete can improve the workability of concrete, reduce segregation and bleeding in fresh concrete, improve freeze-thaw durability and increase pump-ability of fresh...

The shortcoming of polycarboxylate superplasticizer could delay the early strength of concrete, this limit its use in winter. In order to satisfy the application of polycarboxylate superplasticizer in the early strength constructional buildings. TEA was introduced into molecular chain of polycarboxylate...

Amide-modified polycarboxylate superplasticizer (PCE) has shown many advantages compared with conventional polycarboxylate superplasticizer due to its unique molecular structure. In this study, we introduced three types of clay, montmorillonite, kaolinite and muscovite into cement and their influence...

The effect of ferrous ions on the molecular weight and molecular weight distribution of PCE is investigated by Gel permeation chromatography (GPC). The effect of ferrous ions on the dispersion properties of PCE is measured by the fluidity of cement pastes. The results indicate that ferrous sulfate adopted...

Through analyzing and testing the microstructure and chemical component of the samples after laser remelting, the influence of laser remelting on K423A nickel-base superalloy were studied. The results showed that, laser remelting had a significant influence on surface topography of K423A nickel-base...

The surface properties of coating layer have an important influence on printing quality. In this research, the main objective was to investigate into the coating surface topography and characteristics related to binder. The surface microstructure and properties were explored in the method of numerical...

The welding property of the Aluminized steel is analyzed in this article, TIG welding technology of Aluminized steel is presented on the base of mass experimentations, it proves that this technology can effectively prevent the welding crack and improve the property of the weld joint.

Possible solutions of this problem and environmental security are considered in this article, solutions are based on a scientific study on recovery and recycling of oily waste. The method of oil extraction in the purification of oil-containing wastes using solar energy is worked out, given method based...

Aluminum has great application in the machinery, transportation, aviation and military and other fields, because of its light weight, rich in resources, good comprehensive properties. Structure determines the properties, in order to obtain good properties, the key is to get the fine and uniform equiaxed...

Combined with Wuhan Yongqing commercial zone slab requirements, the engineering application concrete mix ratio is determined by testing the durability and mixing optimization, finally realizing one-time continuous pouring 25000 m3 C60 High-strength Mass Concrete Foundation Slab and ensuring the engineering...

Cu and Sr ions doped hydroxyapatite (Ca10(PO4)6(OH)2, HA) whiskers were synthesized by hydrothermal homogeneous precipitation method. The morphology, structure and the phase composites of the products were characterized by XRD, FTIR and SEM. The results showed that Cu2+ or Sr2+ partially substituted...

Effects of phosphate bioglass on sintering of hydroxyapatite (Ca10(PO4)6(OH)2,HA) scaffolds prepared by freeze-drying casting was studied. The phosphate bioglass, acted as a binder, was added in a mixture of HA powders and forming additives. The result shows that the phosphate bioglass binder could improve...

Analysis of turbulence on the naphthenic acid corrosion specimens under scouring of 90m/s high flow rate fluid by Fluent indicated that maximum turbulence existed at the center of specimen, the turbulence in other zones decreased nonlinearly with the distance from the center. The average corrosion rate...

The turbulence and flow rate around the specimens were analyzed by Fluent and results indicated that specimens installed in the pipeline varied the fluid flow direction, highly increased the flow rate nearby and formed strong turbulence around the specimens, the max turbulence in work areas could reach...

Fluent6.2 was used to analog the turbulence and flow rate around the specimens installed in the pipeline and results indicated that the specimens varied the fluid flow direction and increased flow rate of fluid from 20m s-1 to 50m s-1, strong turbulence was formed around the specimens and the max turbulence...

In order to characterizing the binder distribution, Changed drying temperatures were used to alter binder distribution in coating drying process, which was used to investigate into the effect of drying condition on the binder distribution and characterize the binder migration in the method of numerical...

In the chemical industry, chemical machinery is essential production equipment, the corrosion problems of the chemical equipment will bring negative economic problems to the enterprises. In order to improve the anticorrosion ability of chemical machiery, the types of corrosion were introduced, the principle...

The aim of this article is a presentation of the results of laboratory tests and numerical and analytical modeling of timber-concrete composite beams with semi-rigid joints made of steel plates and convex nails. Due to good quality of used materials, composite timber-concrete constructions are considered...

The microstructure and texture analysis of Ti-6Al-4V are investigated through SEM (Scanning Electron Microscope). Based on original references, the results show that, the to phase transformation at the welding center enhances yield strength and ultimate strength through orientations distribution. In...

Theoretical studies on the broadband operating mode of anisotropic acousto-optic deflector (AOD) using tellurium dioxide crystal are carried out, the operating properties of the bandwidth and the central frequency of the AOD are systematically studied by solving the Dixon equation that characterizes...

Bacterial infection is one of the most common problems after orthopedic implant surgery. If not prevented, bacterial infection can result in serious and life threatening conditions such as osteomyelitis. Thus, in order to reduce chances of such serious complication, patients are often subjected to antibiotic...

In this study, prickle sensation was investigated for wear fabrics having different compositions and physical surface characteristics using 1-7 rating scale. Rating score test for prickle sensory discomfort wear fabric test was conducted on 31 subjects. It was found that prickleness sensation arise during...

The interfacial and electrical properties of the multilayer TiON/TaON/InGaAs and TaON/TiON/InGaAs metal-oxide-semiconductor (MOS) capacitors fabricated by alternately RF-sputtering method are investigated and compared. Experimental results show that the former exhibits lower interface-state density,...

Through the study on technological mineralogy of anshan type lean hematite ore, proved the stope in the southern district of ore minerals in the ore is mainly hematite, limonite, magnetite, hematite, siderite images, accounts for some 40% of the content of rock,the gangue minerals are mainly quartz,...

Using a single screw extruder for extruding pure UHMWPE, one of the necessary conditions is to generate large enough extrusion pressure [4]. This article launches a comprehensive and detailed study of raw material of the pure UHMWPE resin powder, establishes a mathematical model of extrusion molding...

Taking 5083 aluminum alloy plate in cold bending test for example, according to the different measuring results of the elastic rebound angle, the bending properties of 5083 aluminum alloy is studied.And the data statistics and analysis are finished,The experience curve of “the rebound angle with R/s”...

This paper analyzed the temporal and spatial distributions of volatile phenols in surface waters in Jiaozhou Bay in 1982. Results showed that the contents of volatile phenols in wet seasons were higher than in dry seasons yet were very low. Ocean current and overland runoff were major sources of volatile...

The application of molybdenum was limited as a candidate material for working at a high temperature because molybdenum has a poor oxidation resistance. MoSi2 is typically selected to solve the problem since it can form a dense SiO2 coating to protect the substrate molybdenum. MoSi2 coating on the surface...

The verification certified reference material about thermal conductivity detector (TCD) of gas chromatograph was studied and the preparation was introduced. This article in detail introduced uniformity, stability assessment of certified reference material and analyzed the uncertainty evaluation. The...

The interactions of chlorotetracycline (CTC) and enoxacin (ENX) with human serum albumin (HSA) had been studied by molecular modeling method. Molecular docking revealed that both CTC and ENX bound to site I (subdomain IIA) of HSA through multiple interactions, such as hydrogen bonds, hydrophobic effect...

There are derivative many problems from electromagnetic (EM) wave radiation with the development of communication technique. To protect the human body from the EM radiation, in this study, the antibacterial nylon (AN)/ bamboo charcoal polyester (BC-PET)/ stainless steel wire (SSW) metal composite yarns...

For the aim that implement the visualization of plant villus vividly and effectively, do much work on the research of villus outward appearance, then put forward a method to simulate villus on computer, the method adopt segment to construct a single villus, and then, with the addition of parameters such...

The hydrolysis reaction of methyl ethyl ketone azine and the simulation of process are studied. The influence factors such as the plate number, the feed location, water and methyl ethyl ketone azine molar ratio and reflux ratio are studied respectively. The feeding method is single strand, reaction section...

In this paper, the separation process of ethylenediamine-water azeotropic mixture is investigated with Aspen Plus software. The sim- ulation results show that the extractive disti- llation column includes 26 theoretical plates, the D/F of azeotropic distillation column is 0.18, the feed location of azeotropic...

A new method for modeling shrinkage of a biomass particle is presented with the unreacted-core-shrinking model and shrinking core model for coal combustion. 2D model of biomass pyrolysis in a moving bed was established. The simulation was carried out with open source code MFIX by using Eulerian-Eulerian...

According to the first-principle based on density functional theory, the stability of the solid solutions of Au-Pd-M (M=Mo,Y,Zr) alloy systems were calculated. The results show that, adding the same percentage content, 1% Mo doped in Au-Pd solid solution is the most stable phase structure. When doped...

Epoxy resin composites filled with nanoparticles are widely used for electrical devices such as insulators, VLSI package and rocket engine shell materials. An experimental study on the mechanical property of SiO2-filled epoxy resin composite was carried out by the electronic universal testing machine....

Rift valley fever(RVF) and peste des petits ruminants(PPR) are both highly contagious diseases of ruminants caused by RVF virus (RVFV) and PPR virus (PPRV), which are both the notifiable multiple species diseases in the OIE list. In order to establish a rapid method for detecting of RVF and PPR, two...

The cyclic oxidation behaviors of Fe-15Cu alloys with different Al concentration at 800 oC were studied. The oxidation kinetics showed that the oxidation process of Fe-15Cu alloys followed the parabolic law, Fe-15Cu-5Al alloy was oxidized more seriously than that of Fe-15Cu-15Al alloy. Analysis of the...

The load-relieving material is described by Mooney-Rivlin model. Dynamical response of projectile-based CCD camera is derived by total Lagrangian Increment Method, and the results is simulated numerically by finite element method. The rule of variation of load-relieving materials’ elastic modulus on...

To research on the equivalent of perforating through LY12CZ aluminum alloy plates and 2 armor steel, based on the rule that the ultimate velocity, the penetration process of tungsten sphere into LY12CZ aluminum alloy plate and 2 armor steel plate was simulated with LS-DYNA finite element code, the numerical...

Concentrations of black carbon (BC) were determined in the sediments from the main stream and the tributary of the Changjiang River with CTO-375 method. Meanwhile, the total organic carbon (TOC) contents, grain size of sediments were also measured. BC contents ranged from 0.22 to 1.89 mg/g, which was...

Concentrations of polycyclic aromatic hydrocarbons (PAHs) were determined in the sediments from the main stream and the tributary of the Changjiang River. PAHs contents in the sediments from the Changjiang River ranged from 10.31 ng/g to 1239 ng/g, which were most likely related to human activities....

The surplus power of Liaoning Province is very obvious, and a lot of spare capacity needs to be consumptive. Haze and other pollution in Liaoning Province take place frequently in winter, and winter heating is one of the major factors. The study found that the implementation of conversion coal to electricity...

The haze is more and more serious environmental pollution in the city, how to reduce haze and even achieve energy conservation is currently a serious problem, energy alternative is a very feasible option. The study puts forward an energy alternative plan from the macro-policy and industrial environment...

This work presents the field and experimental studies conducted in China Three Gorges University, Yichang City, Hubei Province that reveal the distribution of inorganic phosphorus in four vegetation concrete samples and one natural forest sample. Several results of these studies have general application...