In this paper, a generalization of differential electromagnetic equations in fractional space is provided. These equations can describe the behavior of electric and magnetic fields in any fractal media. The time evolution of the fractional electromagnetic waves by using the time fractional Maxwell’s...

In this paper the influence of beforehand condition and sinter degree to capability of sintered dolomite has been investigated by means of measure actived degree and capability of high temperature sintered and property of resist hydrate of different material granularity after different beforehand sinter...

Ethyl 4-hydroxy-3-methoxycinnamate was synthesized by reaction of ethanol and 4-hydroxy-3- methoxycinnamic acid using an efficient cation-exchange resin as catalyst under microwave irradiation. The catalyst activity was investigate by single factor experiments. The reaction conditions - amount of catalyst,...

The magnesium alloys with rare earth element Gd were prepared by induction melting furnace. Influences of Gd on the microstructure and mechanical properties of AZ91D were investigated. The results showed that addition of Gd to AZ91D alloy could refine the microstructure including primary -Mg phase and...

The complex oil-water relation of study area related to sedimentary facies. But the unconformity resulted from frequent tectonic movements puzzled the study of sedimentary facies. Based on the detailed study on the cored wells, the main identification marks of sedimentary facies have been analyzed via...

Patents are the manifest output of nation’s market layout. This paper explores the development of five nanotechnology fields in Germany, including Nano- materials & process, nano- electronics & devices, nano- biology & medicine, nano- instrument & measurement and the others, through the analysis of nanotechnology...

Ni-P, Ni-P-TiO2 and Ni-P-SiC composite coatings on AZ91D magnesium matrix composite were prepared by the electroless composite depositing. The surface morphology of the coatings was observed by scanning electronic microscopy(SEM) and electron probe X-ray microanalyser(EPMA). The corrosion resistance...

A silicone resin as base material, composite powder as filler, and the electronic potting silicone material was prepared using a silane coupling agent -3(trimethylsilyl) propyl methacrylate (KH-570) to do surface treatment. The influence of surface modification and its amount on the flame retardant,...

Subcritical 1, 1, 1, 2-tetrafluoroethane (R134a) extraction is a modern extraction technology in natural product perpartion. The optimized process of extracting astaxanthin from Antarctic kill (Euphausia superba) through subcritical R134a was systematically investigated in this work with respect to the...

For the stern-shaft mechanical sealing device, spring pieces and sealing rings are the main study objects of mechanical behavior and characterization. Consequently, the in-situ compression tests for the spring pieces were performed, where special test equipments were applied to ensure the measurement...

Biomass is a feasible substitute for petrochemicals, providing many of the same chemical building blocks that are required to fabricate durable and high-performance materials. In this paper, the radiation crosslinking of a bio-based polyamide has been investigated over a range of irradiation dose (50–250...

Solidified structure and mechanical properties of Mg97Y2Cu1 alloy reinforced by long period ordered structure with 0-0.3%wt Sr addition were investigated. The results indicate that the addition of Sr ranging from 0.1% to 0.2%, solidified structure of the alloy refines and homogenizes gradually. When...

Copper (I) complexes comprise an important class of luminescent materials in organic light emitting diodes (OLED). A Cu(I) complexes, [Cu(POP)(fluPy-Imidazole)]+ (1), where fluPy-imidazole = 2-(4,5-dihydro-1H-imidazol-2-yl)-5-(9H-fluoren-2-yl)pyridine, POP= bis[2-diphenylphosphino]-phenyl]ether, was...

This paper describes an investigation of properties of 3 ACCMs, including cathodic disbonding, hot water dipping in, shear strength and bonding characteristic. According to standards of oil and gas pipeline, some experiments are carried to determine these characteristics. From these experimental results,...

The polycarboxylic slump-retaining admixture was synthesized by methyl allyl polyoxyethylene ether (TPEG) and unsaturated carboxylic acid in redox system. The factors influencing on performance of polycarboxylic slump-retaining admixture such as temperature, reaction time, acid alcohol ratio, the amount...

Microwave pyrolysis is a new research method for deeply processing of low-rank coal. This paper conducted comparative study on microwave co-pyrolysis products of low-rank coal under CH4 and N2 atmosphere, respectively. The composition and content of tar and bluecoke were analyzed by gas chromatography-mass...

The SNCR De-NOx system is an effective denitration technology for MSW incinerator. In this paper, an economic parameter-S: per unit NOx removal cost was established. The results clearly showed that parameter S has a significant change at different loads. The 90% load had the lowest per unit NOx removal...

Pnicogen bond is a Lewis acid-Lewis base intermolecular noncovalent attractive interaction in which a pnicogen atom (N, P, or As) is the Lewis acid. It has been known since 2011. In this paper, the topological properties of the particular set of pnicogen bond complexes formed with formaldehyde (HCHO)...

In this paper, the moisture sorption isotherms were measured of the profiled polyester (trefoil-shaped) fabric at different temperature and relative humidity, the influence of the temperature, relative humidity were summarized, and three kinds of commonly were used empirical models of moisture sorption...

A compound pore forming agent which can be decomposed constantly in sintering process was designed and prepared. A new cermet sinter was developed by adding the compound pore forming agent into the TiC/M2 matrix material. The influences of content of TiC, sintering temperature and pore forming agent...

The coupling between the pulverized coal combustion and raw meal decomposition in precalciner of the cement plant with capacity of 5000t/d was investigated by Fluent software. The standard k- model was proposed to simulate the three-dimension turbulence flow. The multiphase was calculated coupling process....

In this study, the AISI410 martensitic stainless steel was treated by plasma nitriding at different temperature, different time and different gas proportion. Then the hardness and microstructure were studied by a variety of analytical techniques. The results show that the hardness of nitrided layer decreases...

In this study, we use the technology of ultrafiltration to separate the natural active peptides from milk, and optimize the conditions of ultrafiltration. The density of the natural bioactive peptides could be assayed through Biuret method. The results showed that the optimized separation conditions...

The solvent extraction of iron ( ) from acidic chloride solutions by decanol in kerosene has been investigated. The solvent extraction results demonstrated that the dissolved iron was present as HFeCl4.2Decanol. Extraction of iron ( ) increased with increased hydrochloric acid concentration in the aqueous...

3-Praziquantel-4-(4-chlorophenylsulfonyl)-1,2,5-oxadiazol-2-oxide was synthesized via the coupling reaction of praziquante and 1,2,5-oxadiazole in ethylene glycol, and its molecular structure was confirmed by the melting point and spectroscopic data (UV, IR, and 1H NMR). Moreover, it may be a potential...

[Cu(phen)(OAc)2]2( -H2O) (phen =1,10-phenanthroline) was characterized by Fourier Transform Infrared Spectrometer and Thermogravimetric analysis, and its catalytic performances were investigated in the oxidative carbonylation of methanol to dimethyl carbonate. The results showed that [Cu(phen)(OAc)2]2(...

Based on the dependence between the AuNPs size and the naked-eye visible color change. This study was designed to develop a highly selective and sensitive towards colorimetric sensing of cysteine in fetal bovine serum by the competitive binding of ATP and thiol compounds (cysteine and homocysteine) towards...

Based on design of chemical composition, reasonable adjustment and optimization of smelting and continuous casting process, reheating process, rolling process and cooling process etc., Anyang Iron And Steel Group Co., Ltd. produced successfully 5.5 mm high carbon steel wire rod grade C82DA for conversion...

Electrolytic method is applied to recover nickel from the simulated nickel-containing electroplating wastewater. The experiment studied the main parameters affecting the recovery of nickel, including titanium plate, titanium mesh and graphite as cathode materials, other parameters such as initial concentration...

Basing on TG-DTG-FTIR technology, researching about kinetic activation energy E about eucalyptus and absorption bands and characteristic peaks of volatile product under the heating rate 10 min-1, 30 min-1, 60 min-1respectively. The experimental results show that eucalyptus pyrolysis process can be divided...

On the basis of the thermoviscoelastic constitutive equation and classical Kirchhoff thin plate theory, the motion differential equation of viscoelastic rectangle plate is deduced. Then the expression of rectangle plate deflection under circle distributed dynamic load and temperature is deduced via Laplace...

Different from the traditional “physical manufacturing” mold injection, UV curing mold injection is a new manufacturing method which combines mold injection process and UV curing technology. On the basis of the traditional mold injection process the photochemical mold manufacturing process parameters...

Nanoemulsion (NE) has been widely added into fracturing fluid as flowback additive to enhance fracturing fluid recovery. An environmental friendly nanoemulsion has been formulated. The particle size distribution of the nanoemulsion has been determined. The surface tension and contact angle of the nanoemulsion...

An electrochemistry sensor composed of glass carbon electrode modified with [ZnSO4{ZnCl2(u-S-CH2CH2NH2}]n was used for the determination of mercury(II) ions with differential pulse voltammetry(DPV) in 0.1mol/L KCl solutions. The proposed electrochemistry sensor had good operating characteristics towards...

As a new kind of environmental protection building material, premixed wet mortar possesses a wide application prospect. The technical difficulty is to maintain the workability of premixed wet mortar as long as construction required setting time by choosing suitable raw materials and mix proportion. In...

From Cinnamomum camphora, ten compounds were isolated and identified as 4-hydroxysesamin (1), 3,3 -dihydroxy-4,4 -dimethoxytetrahydrofuran lignanoid (2), 3, 4- methylenedioxyphenyl-3 ,9-dihydroxy-4 -methoxy- tetrahydrofuran lignanoid (3), lyoniresinol (4) , (+)-3 -(3, 4 – methylenedioxyphenyl)- 1,2-...

Continuous roll forming is a new sheet metal forming process for three-dimensional surface parts. In the process, the sheet metal is thinned non-uniformly in transverse direction by controlling the distribution of the gap between the upper and lower forming rolls, the longitudinal elongation is different,...

To research the results of criterion-meeting assessment method used for the operation test in fundamentals of nursing.101 nursing undergraduates who entered Nursing College, Beihua Univercity in 2011, who were randomly divided into experimental group and control group. The students in the control group...

Purpose In order to help the aged acute myocardial infarction (AMI) patients to take an active part in disease assessment, monitoring, treatment and improve the compliance, the AMI patients can relieve their somatic symptoms effectively, and at meanwhile, the incidence of complications can also be reduced.Method...

The nanograde particles of magnesium hydroxide [Mg(OH)2] with lamella morphology were synthesized by the method of electrodeposition. The effects of operation parameters, such as Mg2+ concentration and electric current density, interpolar distance and Na+ concentration on current efficiency of synthesis...

Miriplatin, a novel lipophilic platinum complex has been developed to treat hepatocellular carcinoma. An improvd synthetic route was designed and used to prepare the target compound. Pt(C6H14N2)I2 was reacted with CH3(CH2)12COOAg in water subsequently product was separated from AgI by dissolved in ethanol....

Based on analyzing the mechanism of coupled heat and moisture transfer in building material, this paper takes temperature and moisture potential as driving force. We constructed the model of coupled heat and moisture transfer in building material, solved this model and got the analytical solutions for...

Biological phenotypes of mutant strain 1681 that was the pathogenicity-reduced strain in Colletotrichum gloeosporioides of Stylosanthes guianensia were analyzed by testing growth rate, colonial morphologies and sporulation ability. TAIL-PCR was used to identify the T-DNA integration site and the genes...

Previous studies have found that banana flowers, leaves, pseudostems, roots, infructescence stalks, and peels (M. paradisiacal (Linn.)) have antihyperglycemic effect. The banana peel (Musa nana Lour.) might have the antihyperglycemic activity, its antihyperglycemic activity and active ingredients remain...

The Objective of this paper is to establish a method for determination of six synthetic colorants (sunset yellow, tartrazine, amaranth, carmine, allura red, brilliant blue)in pickles and sauerkrauts. The samples were adsorbed by polyamide then desorbed by aqueous alkali. After purified and extracted,...

In this study, The aim is to establish the determination method for six preservatives of Benzoic acid, Sorbic acid and four para-hydroxybenzoic acid esters (methyl p-hydroxybenzoate, ethyl p-hydroxybenzoate, propyl p-hydroxybenzoate, butyl p-hydroxybenzoate) in beverage by high performance liquid chromatography(HPLC)...

Strength of cement stabilized macadam which added early strength agent improves quickly. This shortens the construction period of road maintenance. This study explores the difference of fatigue performance between the cement stabilized macadam which added early strength agent and the ordinary cement...

In this paper, a numerical method for solving a class of fractional partial differential equations with variable coefficients based on Chebyshev polynomials is proposed. The fractional derivative is described in the Caputo sense. The properties of Chebyshev polynomials are used to reduce the initial...

Molybdenum doped vanadium oxide (Mo doped V2O5) xerogel films are prepared by cathodic electrodeposition on indium tin oxide substrate from Mo doped V2O5 sol. As an anodic and cathodic coloration electrochromic material, the electrodeposited Mo doped V2O5 film presents multi-electrochromic behavior (orange–yellow–green–blue)...

Inhalable particles are harmful to public health and cause serious environmental problems. In this paper, surfactant sprays and gas jet were introduced into the agglomeration chamber to encourage the agglomeration of inhalable particles. The coupling effect of double gas jet and surfactant spray could...

Inhalable particles from coal-fired plant were an important atmosphere pollutants. The removal technology has been investigated widely. A computational fluid dynamics model, coupled with population balance model (CFD-PBM), could be used to predict the particles agglomeration in turbulent flow. The calculation...

Influence of hydroxymethylated reaction in different conditions on complexing capacity of sodium lignosulfonate (SL) with Cu( ), Zn( ) and Mg( ) was investigated. By single factor experiment, the optimal reaction conditions were as follows: dosage of formaldehyde was 0.22 g (g SL)-1, temperature was...

West Oil Product pipeline always take batch transportation, conveying three different qualities of oil product. Crude oil pipeline takes a task of oil transportation from three oilfields in Xinjiang. In accordance with the principles of higher prices for better quality of crude oil, it takes batch transportation...

The curing processes of epoxy resin cured with curing agents containing aromatic ring were analyzed quantitatively with FT-IR. The internal standard and baseline correction were used to decrease the analysis error. Due to the existence of aromatic ring in curing agent, the effects of curing agent dosage...

Phosphorus and boron containing polyethylene glycol esters (PB-PEG) toughening agent was synthesized by the esterification of phosphorus pentaoxide (P2O5), boric acid and polyethylene glycol (PEG). Phenolic foams toughened with PB-PEG were prepared. It is found that the flexural and compression strength...

±1100kV Ultra-high Voltage DC Engineering will adopt JL1X/G2A-1520/125-481 large-section aluminum twisted line of steel core, 1520 mm2 large-section aluminum twisted line of steel core is of four-layer structure and has the same aluminum strand layers of 900 mm2 and 1000 mm2 large-section aluminum twisted...

The ordinary poly(ethylene vinyl acetate) (EVA) resin can’t meet the requirements of encapsulating photovoltaic (PV) modules, so the service life of them has not been prolonged for 25 years. The chemical modifications of EVA were studied in this paper to improve the properties of PV encapsulants. It...

Disulphide derivatised mesoporphyrin (DSDMP) and its cobalt complex Co(II)DSDMP were conveniently synthesized and successfully immobilized onto gold surface by monolayer self-assembly of disulfide. The modified electrode was characterized by Infrared Spectrometer (IR) and X-ray photoelectron spectroscopy...

Collagen hydrolysate of S and C were prepared by enzymatic hydrolysis decalcified tilapia scale and pepsin-solubilised collagen extracted from decalcified tilapia scale. The antioxidative activity of C and S were evaluated by their effects on scavenging ability of superoxide anion O2- radicals, 1,1-diphenyl-2-picrylhydrazyl...

The infrared spectra of serum from cancer patients can be measured using Fourier Transform Infrared Spectroscopy (FTIR). The changes of infrared absorption peak position in phosphor diester groups from cancer cells using OriginPro8.1 software indicates that nucleic acids contents in the cancer serum...

4-(4'-quinazolin-ylamino) phenyl-4-(N,N- dimethylamino) phenyl propenyl ketone with total yield of 68.0% was synthesized with 2-aminobenzonitrile and N,N-dimethylformamide dimethyl acetal as a starting material, the synthesis of N-(2-cyanophenyl)-N,N-dimethyl formami- dine, and then amino acetophenone...

In this paper, using high performance liquid chromatography HPLC , trans resveratrol and trans piceid contents in different style wines (red,white,fresh,aged) from three typical grape regions in China(Hebei Huailai, Ningxia Qingtongxia,Xinjiang Changji) were determined. The role of grape varieties, grape...

This paper develops a fuzzy clustering method based on the fuzzy t-norm, and uses the data of China securities market to analyze the factors influencing the portfolio selection. Furthermore, this paper estimates an investment portfolio based on fuzzy clustering. The results show that the investor can...

the functional film is the development and application of nanotechnology, along with the development of computer, semiconductor, solar energy and other industries, a related functional materials -- transparent conductive oxide thin films produced, developed, researching on ZnO: Al ZnO films doped with...

cerebral venous malformation (CVM) is a rare disease which often result in misdiagnosis and missed diagnosis for its non-specific symptoms. we encountered a case of cerebral venous malformation with recurrent manifestations of perennial headache in 40-year-old woman.Through studying the main image features...

Using the method of complex analysis and through constructing appropriate conformal mapping, the paper has analyzed the plane elasticity problem of dynamic cracks in finite-width single-edged cracked strips, and provided an analytical solution to the crack-tip stress intensity factor. In addition, when...

Organic diamines and their derivatives are important compounds in organic chemistry, which are useful and applicable in many fields. Among them, organic diamines have two NH2 groups, which can be enabled to react with aldehyde, acyl chloride and anhydride to give out schiff base, amide and amic acid,...

The ultrasonic-microwave synergistic extraction process parameter of Tengjiao (Zanthoxylum schinifolium) oil, such as time, temperature, ratio of solid to liquid, microwave power and ultrasonic power, have been studied by orthogonal experiments. The results indicate that, using colza oil as the extraction...

The drag reduction effects of a non-Newtonian fluid (CMC aqueous solution with 50-1000wppm) in a sinusoidal wavy-walled tube were investigated experimentally in the Reynolds numbers range from 25 to 360. Based on the pressure drop method, drag reduction was measured and the maximum drag reduction achieved...

Chemical engineering calculation is the basis of chemical engineering science and a required course for students of chemical engineering specialty. In chemical engineering calculation, the division and determination of the balance system are an important link. Taking the material balance as an example,...

Synthesis of polycarbonate diols from diphenyl carbonate and 1,4-butyl diol has been demonstrated in the presence of metal acetate catalysts. Alkali metal acetate and alkaline earth metal acetate catalysts showed much higher catalytic activity, of them, lithium acetate was the most active. And the catalytic...

This review gives a summary about the application of enzyme assisted extraction in natural products, especially, the mechanism of enzyme assisted extraction and its further improvement. The target of this review is to find the potential value of biotechnology for industrial application.

A method for the determination of acrylamide in roasted coffee by UPLC-MS/MS was established. Acrylamide was extracted with water, and clean up on a HLB and MCX SPE cartridge, separated on a C18 column using acetonitrile-0.1% formic acid as mobile phase, and then detected under multiple reaction monitoring...

The photocatalysts of S-doped K2Ta2O6 have been successfully synthesized by hydrothermal method. Effects of S doping to the K2Ta2O6 on the structure and photocatalytic performance are systematically investigated. The S was successfully introduced into the lattice sites of Ta5+ at the state of S6+. The...

The individual ZnO nanowire was prepared through thermal evaporation of ZnO powder. A new test platform which contained the micromanipulator nanoprobe system installed in the scanning electron microscopy (SEM) chamber was introduced for the test of the mechanical properties of individual ZnO nanowire....

We report a simple and effective route to fabricate ultrathin curved In2S3 nanoflakes-functionalized natural cotton cellulose nanofibers by combining electrospinning and hydrothermal growth technique. Cotton cellulose nanofibers(CCNFs) were obtained by electrospinning technique. Curved and interconnected...

Effect of the addition of carbon on the sintering properties of pressureless sintered boron carbide ceramics was investigated by using carbon black and phenolic resins as the main additives. There were three ways for adding Carbon, carbon black adding, phenolic resins adding and adding carbon black and...

Nanoscale hydroxyapatite (HA) is an optimal candidate biomaterial for bone tissue engineering because of its excellent bioactive and osteoconductive properties. Here we have been successfully synthesized the faceted hexagonal hydroxyapatite nanotubes by one-step hydrothermal method. The obtained product...

Due to the influence of the working environment, there is always unbalance fault in rotating machinery which is difficult to detect by sensors. In order to solve this problem, the unbalanced rotor model is established by using modal analysis theory in this paper. The first six mode shapes of the simulated...

Phloroglucinol–resorcinol–formaldehyde (PRF) carbon aerogels were synthesized using Na2CO3 as the catalyst. Acidizing process was introduced to the sol–gel reactions system. The results show that the acidizing process of trifluoroacetic acid acetone solution can decrease the shrinkage factor of carbon...

Objective To study the technological parameters of the purification process of phenols from Callicarpa nudiflora (C. nudiflora) with HP-20 macroporous resin. Methods The kinetic adsorption and desorption experiments were carried out on HP-20 macroporous resin (HP-20) to optimize the separation process...

The antibacterial activity of the five dimeric quaternary ammonium amphiphiles against Escherichia coli were evaluated by determining the minimum inhibitory concentration (MIC) and compared with one monomeric quaternary ammonium amphiphile. The antibacterial activity of dimeric amphiphiles is superior...

Turpentine oil is one of the most important nature essential oil of the world and it is particularly rich in China. -pinene is one of the principle components of turpentine oil. Turpentine has a high application value, but more applications are prepared terpene resin by polymerization. This paper reviewed...

Weft knitted fabrics and their reinforced composites have good extensibility, high production efficiency, good formability, impact resistance and low production costs.The two kinds of weft knitted float stitch fabrics are made of glass continuous filament yarns, and were knitted on computerized flat...

Eight Capsicum annuum were studied for genetic diversity using ISSR markers. After screen of 30 ISSR primers, 21 pairs could amplify clear bands. And 382 bands were amplified by using above 21 pair of primers, of which 270 bands (70.6%) presented polymorphism. According to Nei and Li, the genetic similarity...

(-)-Dibornyl oxalate was synthesized by the reaction of natural (-)-borneol with oxalyl chloride under the optimized reaction conditions: temperature 35 , time 1 h and the molar ratio of (-)-borneol and oxalyl chloride 1.0 : 0.6. The reaction underwent in good selectivity as 99 % for target product which...

Thermoelectric generators(TEG) is considered as a promising technology for utilizing low-grade thermal energy, while the cooling system plays a key role in TEG. A two-dimensional numerical model of jet impinging jet cooling is developed based on the commercial code FLUENT. The influences of several factors...

Carbon nanofibers (CNFs) was synthesized by simple electrospinning, followed by thermal treatment over a carbonization temperature of 900 °C. The morphology and microstructure of CNFs were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results indicate...

This paper provides an elaborate summary and review on the development and progress in the preparation and application of p-menthane-1,8-diol monohydrate.

Nitrofurazone residues in fishery products were dangerous for human health , semicarbazide (SEM) was the nitrofurazone metabolite could residues in fishery in a long time . To detect SEM residues in fishery products rapidly by immune method, preparation of high quality polyclonal antibody against SEM...

A method for the determination of flavomycin in shrimp by high performance liquid chromatography was established. Flavomycin in sample was extracted by methanol solution and defatted with n-hexane. The lower was cleaned through the membrane and determined by HPLC. The calibration curve was linear. The...

A method was developed for the simultaneous determination of Afiatoxin ( AFB1 AFB2 AFG1 AFG2) in chrysanthemum is developed by Liquid chromatograPhy with fluoreseence detection after immunoaffinity column clean up and Pre cloumn derivatization.four south medicine samples were extracted with methanol...

To provide scientific data of the internal transcribed spacer (ITS) and trnL-F sequences for the authentication of Potentilla discolor Bge., we extracted the genome DNA from the leaves of Potentilla discolor Bge., purchased from Hebei Province, amplified the ITS region using ITS universal primers of...

Ginsenoside Re is employed as the reference substance for the determination of contents, elution rate of the total saponins from Sindora glabra seeds is as the evaluation index, the optimum extraction technology derives from the L9 (34) orthogonal experiments designed for purpose of the maximum extraction...

A method was proposed for the determination of copper, iron, nickel, cobalt, gold and silver in industrial wastewater by ICP-AES. Working conditions of the instrument and selection of analytical spectral lines were tested and optimized. The detection limit was 0.002,0.003,0.002,0.008,0.008,0.002mg/L....

Shale gas reservoirs have been proposed as feasible choices of location for injection of CO2 because this method could enhance recovery of natural gas resources, while at the same time sequester CO2 underground. In this paper, a fully coupled multi-continuum multi-component simulator which incorporates...

Walnut peptides were obtained through special enzyme or hydrolytic enzyme enzymolysis with walnut residue as raw materials and degree of hydrolysis as index. The results showed that special enzyme was the optimum proteinase. The optimum hydrolytic conditions were as followed: the optimal enzymatic hydrolysis...

The phosphorus content, molar radio of calcium and phosphorus and the effects of magnesium on calcium content in chicken bones were studied, comparing with different three groups which was fed with magnesium salt. The result showed that calcium content and phosphorus content of experimental groups have...

This paper focuses on the issues of the fibre-reinforced composite material microstructure and presents a new numerical method to generate random fibre distributions and predict the macroscopic mechanical properties of composite materials based on the represent volume element (RVE). The method, named...

Three 3-substituted derivatives of quercetin were synthesized in 10-80% overall yields. Their structures were characterized by 1HNMR. Three target compounds (4a~4c) have not been reported before. The results showed that: pre-treated of PC-12 cells with, cell survival rate was higher than that of quercetin....

Seven novel 3'-mono-substituted chalcone derivatives were synthesized from 2,4-dihydroxyacetophenone in 4 steps in 18-31% overall yield. Their structures were confirmed by 1H NMR. The anticancer activity of these new target compounds (4~10) against human leukemia K562 cells were evaluated by MTT assay...

Objectives: To prepare curcumin tablets, and evaluate their in vitro dissolution. Methods: Curcumin was dissolved in acetone, wet-granulation and tableting. The amount of Poloxamer 188 and Gremophor RH40 were chosen as factors, and the in vitro dissolution at 120 min was used as evaluation index. The...

In this paper, current situation of the development of new construction materials were summed up and analyzed, and the future development trend of new construction materials is analyzed in view of the current market demand of new construction materials.

Green building materials is one of the specific embodiment of the sustainable development strategy in the field of architecture. Because of the differences in geographical, concepts and technology, the countries’ understanding of green building materials and the application are different, and the power...

With the new materials, new technology are being widely applicated in the construction, the requirements has been further, such as how to enrich and expand knowledge and improve their professional qualities. To learn to master modern technology and materials from practice is an effective way. The trend...

This paper determined calcium and magnesium in bioleaching solution of uranium ore by optimized EDTA method. This method used acid chrome blue K-naphthol green B mixed indicator after adding reducing agent hydroxylamine hydrochloride, masking agent triethanolamine and masking agent L-cysteine. This method...

An exhaustive study should be carried on Crumb Rubber Concrete deterioration caused by sulphate attack in this paper. the crumbed tire rubber powder were used to replace fine aggregates of concrete, whose grain size is 0.28mm. The replacement levels were 5%, 10%, 15% and 20 % by volume of the fine aggregates....

Curl mechanism in cold rolled steel strip coiler is the key part for strip curling. This paper established the 3D model of cold rolled steel strip coiler. Based on it, the structure of the curl mechanism is designed and analyzed. The stress distribution of the drum and the drum shaft in the curl mechanism...

Our objective to study the expression and activity of the apoptosis protease Caspase-3 in E. coli BL21 (DE3) Plyss. The cDNA of Caspase-3 was amplified by PCR and inserted into the cell of K562, it was then cloned to prokaryotic expression vector pET-21b, after which Caspase-3 was induced by IPTG. The...

AZ31B was used as the basic material in electroless Plating of Ni-Co-P, The optimium formula and process conditions were obtained by using the orthogonal experiment methods. XRD, SEM and EDS were used to characterize phase structure,compositon and morphology of Ni-Co-P coating. The morphology,corrosion...

the relationship between loopholes of stress concentrated coefficients and stress consolidate coefficients were illustrated The relationship between impact value and loopholes sensitivity were found The relationship between crack forming energy and crack forming life was studied.

The new ternary compound Co4NiNd had been prepared by melting with stoichiometric elemental constituents, and the crystal structure had been studied by the means of X-ray powder diffraction technique. The results show that the new compound of Co4NiNd is the hexagonal structure, space group p6/mmm(No.191),...

When the vehicle is running on the wet road, the contact force between tire and road decreases and the driving controllability of the vehicle becomes worse due to the hydrodynamic force of water. The finite element model of the steel belted radial tire hydroplaning with complex pattern was derived in...

A scientific method by combination of PIXE measurement and fuzzy cluster analysis was established to distinguish blue and white porcelains from two different kilns. Twenty two blue and white porcelain samples from Jiajing official kiln and Dehua Housuo kiln are applied for this process . The chemical...

Using phase change material (PCM) as an energy storage medium is one of the most efficient ways of storing thermal energy. An important organic PCM is paraffin. There are a lot of advantages of paraffin, but an undesirable property of paraffin wax is its low thermal conductivity. The main methods to...

La2NiO4 conductive particles were incorporated into Cu matrix for enhanced electrical contact performance, while their effect on the arc erosion behavior of contacts was investigated. The results indicate that the particles in the hot-pressed Cu/La2NiO4 composites accelerate the separation of oxide scales...

The wet sludge receiving, storage and feeding subsystem is the core of the sludge treatment plant project, and is apt to lead to the odor generation and the dust leakage, which will do damage to the environment. Based on the SIEMENSS S7-400 homogenizing treatment of the sludge through the control system...

Electronic structures and optical properties of bulk -FeSi2 are investigated in detail by first principles pseudo-potential methods based on the density function theory. The calculated results show that -FeSi2 is a quasidirect band gap material with gap value of 0.74eV. The density of states is mainly...

The use of airbags can improve the safety of the car. Since the airbag appears to now, fabric for airbags has gone from the coated fabric to the uncoated fabric. The raw materials for airbag fabric has been nylon, especially nylon 66, which also prompts researchers from all of the countries continue...

Since transparent conducting oxides can be as a buttom layer of complex film electrodes, electrodeposition technique may produce ZnO films depending on variety conditions and modified surface layers of substrates in electrochemical procedures. Here we invested the structure and morphologies of ZnO films...

Systematic research on monomolecular layer of asymmetrically substituted Copper ( ) Phthalocyanine (CuPc) and mixed CuPc with arachidic acid (AA) has been done. In this paper an attention is focused upon the molecular orientation in the film by means of the surface pressure-area ( -A) isotherm method,...

The optical beacon is an important position indicator in aviation, sea transportation and the sea lifesaving. As an optical indicator, the optical beacon has been applied in many fields With the need of the remote indication, the optical beacon with LED sources, owing to high brightness and luminous...

In order to study basic method for measuring elastic modulus of glued laminated beams using vibration method, the theoretical basis of measurement was introduced. A forced vibration method was used to measure the natural frequency of glued laminated beams in simple supported condition. Compared with...

In this article, through the numerical simulation of the wind turbine under different wind speed, we can observe the changes of the blade surface pressure. If the air pressure of the blade surface is larger, the erosion is more serious. In consequence the erosion degree will be more and more serious...

Double chamber microbial fuel cell with anaerobic and aerobic was used in treatment of coking wastewater. The influence of electrode materials, initial COD and temperature on the power generation performance of microbial fuel cell was investigated. The results shown that, the electricity production performance...

The W-2 high-temperature enamel coating which coated on the surface of the K403 guide vane, presents the faults of coating’s collapsing and cracking frequently in use because of the greater difference between W-2 high-temperature enamel coating and K403 alloy in coefficient of thermal expansion. In order...

Zr-based bulk metallic glass possesses the highest potential as a structural material among metallic glasses. However, its potential application has been restricted by a number of issues, such as fragility, small size and difficult fabrication into different shapes. In this paper, an attempt is made...

The snaking of strip in the continuous annealing furnace affects both the process stability of production line significantly and the quality of final products. This paper for the first time proposed the self-centering ability of tapered hearth roll on initial flatness of strip travelling in the furnace...

Cube concrete samples (150×150×150mm) of five ages (7, 14, 21, 28 and 35d) under different stress conducted the ultrasound examination by non-metallic detector and universal testing machine. The results show that the relationship curve of the stress and the ultrasound amplitude can be divided into four...

Three Ti-Nb microalloyed high strength steels with varying Ti contents were refined in laboratory 50 kg vacuum induction furnace. Microstructure observation and TEM analysis were conducted. Tensile tests were performed. The results show that both yield strength and ultimate tensile strength increase...

Effect of the particle size of Cu, Cr on the microstructure of Cu60Cr40 alloys was investigated using the method of mechanical alloying and microwave sintering. The particle size of Cu, Cr was analysised by the BT-9300S type laser particle size distribution analyzer, and Cu60Cr40 alloys has been investigated...

The physical weak-discontinuous problem of an axis-directional interfacial crack between homogeneous material and functionally graded materials (FGMs) cylindrical shells is studied. Base on Reissner plate theory, the governing equations are derived for weak-discontinuous problems of cylindrical shells....

The near-tip fields of an anti-plane crack in functionally graded piezoelectric materials(FGPMs) are investigated. To make the analysis tractable as usual, the elastic stiffness, piezoelectric parameter, and dielectric permittivity of FGPMs are assumed to be exponential functions of x parallel to the...

The problem of an anti-plane crack situated in the interface of functionally graded piezoelectric materials (FGPMs) and homogeneous piezoelectric materials (HPMs) is considered under the impermeable assumption of crack surfaces. The mechanical and electrical properties of the FGPMs are assumed to be...

In order to investigate the structural evolution and the capability of resistance to -ray irradiation of natural minerals, the zircon from metamorphic rock in the middle region of Hainan was investigated. The morphologic characteristic of cracked rocks was observed and zircon crystals were selected under...

Steel samples under different pulse magnetic field are produced using self-developed pulsed magnetic field generator, and the discharge voltage of the pulsed magnetic field selected from the experiment is 0V, 40V, 80V, and 100V four gradient levels. The morphology of the microstructure is photographed...

The formation energy, electronic structure, density of states and optical properties of ZnO doped by Mg in substitutional and interstitial positions are studied. It is found that the band gap of ZnO is enlarged by doping Mg in the substitutional position, and the ZnO doped by interstitial Mg becomes...

In order to study the seismic behavior of SRC-RC transfer column under low-cycle loading, the open source finite element software OpenSEES was used to establish models of SRC-RC transfer column based on fiber model and conduct numerical analysis. Compared with experimental results, numerical analysis...

The adsorption of xylitol residue in 200mg/L of Cr(VI) solution at different ionic strength was studied. Results show 97-99% of Cr(VI) can be effectively adsorbed when Ca and Na ion concentration was ten time of Cr, and the adsorbing ratio decreases with the increasing of Ca and Na concentration, indicating...

A novel N, N-(4-amino phenyl maleimide) diglycidyl amine (APMDGA) was synthesized from maleic anhydride, 4-nitroaniline, and epichlorohydrin by a few-step reactions via intermediate products N-(4-nitrophenyl)maleimide and N-(4-aminophenyl)maleimide. The chemical structure of APMDGA is confirmed by 1H-NMR,...

A new binder system was developed to produce Magnesia-Carbon matreials in a cold batch process. The binder system comprises a liquid carbores and a high-melting carbores powder. Both components are graphitizable thus leading to an anisotropic carbon system resistant to spalling and oxidation. The system...

Different from traditional forming process, sheet soft punch process uses only a rigid die and the other tool set is a flexible medium, such as natural or synthetic rubbers. Soft punch stamping process for flow channel in stainless steel bipolar plates of the proton exchange membrane fuel cell (PEMFC)...

Through the research on low-pressure casting, combined with structure of aluminum alloy, this paper introduces the typical system design of low pressure casting process, including the designs of feeding system and exhaust system. The control techniques of the process parameters which include filling...

Influence of grid on peak of Heat Release Rate (pkHRR) test of cone calorimeter was researched, in which cotton, flame-retard cotton, PET, and flame-retard PET fabric were used. Results show that coefficients of variation (C.V) of pkHRR values of cotton and flame-retard cotton were reduced from 8.5%...

Ellipsoidal silicon nanoparticles were prepared by using the mesoporous silica as raw materials via an magneisothermic reduction reaction with the temperature program control method, while the sample get the corresponding ellipsoidal shape of mesoporous silica. The properties of the ellipsoidal silicon...

We report a facile method for the synthesis of cuprous oxide nanocrystals with three different structure. High surface roughness spheres, self-assembly layered Cubic and snowflake nanocrystals can be synthesized directly by hydrothermal method. F127, CTAB and EDTA was used to be a precise control of...

In this study, the microstructure of extrusion welds (including charge welds and seam welds) in a curtain wall hollow profile made of 6063 alloy is investigated using both Optical and Scanning Electron Microscopy (OM & SEM, respectively). The grain size and the morphology, size and distribution of particles...

The shape of welded joints directly affects the quality and stability of joints, so the weld shape prediction has great significance and engineering value to for process parameters selection. A mathematical model of fiber laser welding temperature field simulation is proposed for weld shape prediction...

In order to investigate the effect of moisture on methane desorption and diffusion characteristics, a series of experimental measurements were performed on coal samples with different moisture contents. The experimental data was fitted and the mechanism that accounts for the reduction in desorption amount...

In order to investigate the internal pore structure of coal, the adsorption isotherms of coal particles with different sizes were measured using the Quantachrome Autosorb iQ specific surface area and pore size analyzer. The pore characteristic parameters obtained were analyzed including the specific...

In order to improve the effect of water injection and dust prevention in coal seam, the wetting process with water in coal was described in this paper. The coal surface tensions with six different aqueous solutions were measured and the contact angle of coal samples from Zhaozhuang Mine was tested. The...

In2O3 films were deposited on K9 glass by direct current magnetron sputtering with different oxygen partial pressure percentage. It is found that the films have a body-centered cubic structure, a relatively high transmission in the visible range and an optical band gap of around 3.75 eV. The conductivity...

This paper summarized the preparation and mechanical properties of current biomedical metallic materials, which contained medical stainless steel, titanium based alloy, magnesium alloy. Preparation covered metal smelting, powder metallurgy and micro-arc oxidation technology. The mechanical properties...

The coatings of titanium dibordie (TiB2) on a high purity graphite substrate by chemical vapor deposition (CVD) was studied by using a gas mixture of TiCl4, BCl3 and H2. The reaction thermodynamics and the influences of TiCl4: BCl3 flow ratio on the growth rate of TiB2 are analyzed by using HSC software,...

In this paper, the analysis of various higher-order shear deformation theories for the free vibration of laminated composite plates is presented. A Navier-type analytical method was used to solve the governing differential equations. Natural frequencies of simply supported laminated composite plates...

The recycled aggregates were modified by sodium silicate, cement grout, cement mixed with superfine fly ash grout and polymer emulsion. The influence of the modified recycled aggregates to the mechanical properties of the concrete was studied. The results indicated that the recycled aggregates can reduce...

The article focuses on the self-drying curing characteristics of energy-saving and environmental friendly water-based self-drying / fast-drying foundry coating. Through check experiment, the differences of strength, humidity resistance and influence on the strength of resin sand when respectively using...

Test of the rheology behavior for modified skim rubber (MSR) were carried out with rubber processing analyzer (RPA), and mooney viscosity were carried out with Mooney Viscometer. The results showed that mooney viscosity of MSR is lower than skim rubber, and it is higher than SCR-5 (Chinese Standard Rubber-5)....

Six group of axial compression tests of sandstone were conducted in laboratory, and the infrasound signals of each test process were recorded synchronously then the time-frequency characteristics of all signals have been analyzed to find the failure precursor information, the results show that: The infrasound...

Tetra-(hydroxypheny-hexfluoropropyl) zinc(II) phthalocyanine was synthesized and its structure was characterized by elemental analysis, IR, MALDI-TOF mass, and 1HNMR methods. Its photophysical properties was measured by UV/Vis, steady-state, and time-resolved fluorescence spectroscopy. The bulky fluorinated...

A new dipping basalt fiber reinforced concrete (DBF-RC) was developed in this study. The surface of fiber was modified by dipping into epoxy resin. The mix of DBF was first researched on cement mortar, and then on concrete. The workability and mechanical properties of cementitious materials were investigated....

Evolution of adiabatic shear bands in zirconium alloy under dynamic deformation was investigated by means of split Hopkinson pressure bar impacted at different strains and strain rates. The results show that adiabatic shear bands were the main plastic deformation mechanism of zirconium alloy subjected...

This paper aims to implement the Arlequin method to simulate the bearing failure in composite bolted joints. Arlequin coupling elements are established by introducing Lagrange multipliers to couple the 3D coarse elements and 3D refined elements. Refined elements are meshed one element each ply the same...

The compound powders of VB2 with 25 wt% and 50 wt% Ni were mixed uniformly using a planetary ball miller, respectively. The discharge capacity of VB2/air battery with VB2-Ni as anode in KOH electrolyte was investigated at room temperature and ambient pressure. Meanwhile, the microstructure of VB2-Ni...

In this paper, we examine the dynamic anti-plane behavior of interacting redial cracks emanating from the edges of two interfacial circular cavities in piezoelectric bimaterials under incident anti-plane shearing wave (SH-wave). Green’s functions for a semi-infinite piezoelectric medium with two circular...

Simulation of Micro Blanking Process of Square Hole with Fillet was carried out based on DEFORM-3D. The ratio of burnish depth, shear depth and fracture depth to sheet thickness under different relative blanking clearance (c/t) was analyzed. The results show that the burnish depth at the fillet increases...

SUV (Sport UtilityVehicle, SUV) HCG (Height of Center Gravity) is higher, relatively low rollover stability, higher rollover accident rate has become an important issue for cars safety. In this paper, Firstly, four-DOF kinematics theoretical vehicle model was established then combined with a SUV development...

According to the test results of the composition material of the all-lightweight aggregate concrete,design the mix proportion of the all-lightweight aggregate concrete of LC30 and LC35 levels,and make the compressive strength test, the splitting tensile test and the elasticity modulus test,analyze the...

In this work, the effects of cooling rate on the microstructure and tensile strength of A356 wheels during solidification were studied. Four cooling methods, including air cooling, wind cooling and two different water coolings, were a used to control the cooling rate of spoke. Comparing with the air...

Dynamic characteristics of droplets on the one-tier surface, which was a micropillared hydrophobic surface fabricated by lithography and two-tier surface, which was a micro-nano hydrophobic surface replaced by dry lotus leaf were studied under vertically vibration. Our experiments shown that the two-tier...

The abundance of one major and eight trace elements in 215 coal samples from the Mengjiawan exploration area, northern Shaanxi, China, were determined. As compared with Chinese coal, American coal and coal Clarke value, only Th content in the Mengjiawan coal is high. The abundance of the element is different...

TH values of low carbon non-microalloyed and boron-microalloyed steels before and after baking were measured and microstructures of low carbon non-microalloyed and boron-microalloyed steels before and after baking were observed by scanning electron microscope as well as transmission electron microscope...

Grinding is generally the final process, and it is closely related with the surface quality of the component. Now, it’s difficult to measure the surface roughness until the grinding process is finished. The purpose of this research was to study the roughness prediction and avoid the defect happening...

Systematic research on the performance of former designed plasma reactor was carried out in this paper. Numerical simulation method was performed, the distribution of electromagnetic field in microwave cavity by Finite Element Method (FEM). Microwave mode in waveguide, coaxial transformation part and...

The Lead brass is used in various fields of machinery manufaeturing widely because of its superior performanee,easy molding cutting and ability corrosion resistanee.However,the lead is harmful in the environment.The purpose of this research is to produce a kind of environmental and free-cutting brass,which...

The ES-U3160 reinforced fabrics with toughening function were prepared by carrying the Ex-situ elasticizer polyethersulphone homogeneously on reinforced fabrics according to Ex-situ toughening technology. ES-U3160/5284 CF reinforced epoxy resin matrix composites were prepared by RTM process taking ES-U3160...

The method of carbothermal reaction is used to prepare titanium boride (TiB2) in a DC electric arc furnance by using a powder mixture of TiO2, H2BO3 and C. The initial product is milled and the impurities are removed by pickling and reverse flotation. The final TiB2 powder with a purity of over 99% can...

ZnO thin films have been deposited on ITO substrates by pulsed laser deposition at various laser pulse energies. The crystalline structure, surface morphology and optical properties of ZnO thin films were characterized by X-ray diffraction (XRD), atomic force microscope (AFM) and UV-Visible measurements....

The photophysical properties of a novel dendrimer tetra-{3,5-di-(4-nitro benzyloxy) benzyloxy} zinc phthalocyanine (DZnPc) was studied by steady-state, time-resolved fluorescence and UV/Vis spectroscopy. DZnPc mainly existed as a monomer in DMF. Intra-molecular energy could be transferred from peripheral...

This paper experimentally study the process and characteristics of the bridge structure steel CTOD specimens weld seam fatigue crack prefabricated. The results provide an experimental base and computing foundations for the bridge This paper studies the CTOD (Crack tip opening displacement) fatigue precracking...

The paper introduces the basic principle of voltage space vector pulse wide modulation (SVPWM), presents the detailed method of realizing SVPWM under MATLAB/SIMULINK environment, and finally gives the experimental simulation results.

Due to the vital function of frequency-variable equipment in the energy-saving technology, the paper develops a suit of small power frequency -variable controlled equipment based on digital signal processor (DSP) TMS320LF2407 of American TI company. It designs holistic project of the equipment, researches...

The design of intelligent solar charging system, through the solar panel to convert solar energy into electrical energy, through DC/DC converter circuit processing, charging the battery. The entire system consists of DC/DC conversion circuit, a processor module, A/D sampling circuit, pulse width modulation...

The tensile behavior of secondary general single crystal superalloy DD6 with low Re was investigated at 1070 C. In this study, orientation of the specimens was selected along the [001] direction and the evolution of microstructure and dislocation configurations were analyzed by SEM and TEM in detail....

The problems like eutrophication and high chroma of surface water has aroused the attention of lots of people. Nowadays, the study on the treatment of chroma, ammonia nitrogen and phosphorus is mature. But, these technologies are always single and independent. In this study, we synthetize a material...

The modification and modulation of dicarboxylic amino acids on tellurium oxide nanoparticles (TeO2NPs) were investigated by Fourier transform infrared spectroscopy. The TeO2NPs prepared in aspartic acid (Asp) or glutamic acid (Glu) were spheres with main size distribution of 30-80 nm. TeO2NPs were bound...

The thesis studies the temperature characteristics of 5kW air natural convectional type proton exchange membrane fuel cell. The three-dimensional mathematical model of the proton exchange membrane fuel cell system is established. Using COMSOL software multiphysics simulation modeling, from the aspect...

The low- power and portable proton exchange membrane fuel cell has the features of quick start, high power density and efficient energy conversion. It is widely used in the small equipment’s power source devices. However, the characteristics of temperature change of proton exchange membrane fuel cell...