Materials Literature
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The electrodeposited aluminum coating on Q235steel was obtained by electrodepositing in inorganic molten salt of AlCl3-NaCl-KCl with 1070aluminum as anode at 150℃,and the effects of electrodepositing parameters on surface morphology of aluminum coating were studied.SEM analysis shows that,with increasing of current de…
Monopolyethylene glycol maleate was synthesized by decompression melting method,and the synthetic process was discussed. Five factors were optimized,including alcohol acid mole ratio,amount of catalyst,inhibitor dosage,reaction temperature and reaction time,designing L16( 45) for orthogonal experiment. The best condit…
In order to improve the additional value and the comprehensive utilization of straw. In this paper,physic-chemical properties and mechanical pulping characteristics of several kinds of straw fibers were studied. Straw fiber morphology was determined by Leica microscope,statistical analysis of the length,width and leng…
Objective To observe the effects of sericine on neuropeptide Y( NPY) expression in islet cells of type 2 diabetes mellitus rats. Methods Methods 36 male SD rats were randomly divided into 3 groups with 12 rats in each group: normal control,diabetes mellitus model and sericine treatment groups. Type 2 diabetes mellitus…
In order to optimize the processing scheme for the brittle zone of shell material,increase the lethality of projectile and enhance the utilization ratio of material,the fracture processes for the alloy steel specimens with no brittle zone,asymmetrical distribution brittle zone and offset-containing crisscross brittle…
Two kinds of inorganic/organic membranes were fabricated via mixing the P2O5/SiO2powder and sol prepared by sol-gel method with SPEEK,respectively.The morphology,mechanical properties and proton conductivity of the membranes were studied.In contrast with the pure SPEEK membrane,the proton conductivity of the composite…
To research the epidemicology of the pig proliferative enteropathy(PPE)in different parts of Guangdong and at different ages of pig.In our paper,apolymerase chain reaction(PCR)was designed to diagnose PPE.The prevalence of PPE was confirmed as 16.29%in pigs in Guangdong.The infective rate was 8.6%,11.90%,25.48%,0.57%,…
Objective: To evaluate the influence of the 308 nm excimer laser on the level of the tumor necrosis factor-α( TNF-α) and the basic fibroblastic growth factor( bFGF) in the skin tissue fluid of patients with vitiligo vulgaris in stable stage. Methods: 28 patients with vitiligo vulgaris in stable stage receiving autolog…
The epitaxial strain effects and Born effective charge of the cubic LaAlO3( LAO) are investigated,using the first-principle based on density functional theory. From the results of the density of states( DOS) Mulliken distributions of LAO,the La-d,Al-s,p and O-p are predominant role of orbital electrons,and Al-O orbita…
Diatomite was used to partially substitute coarse ground calcium carbonate( GCC) to produce coated matte and dull papers. The effects of diatomite on the paper gloss,printing gloss,dry pick,and ink setoff rate were studied. The use of diatomite in paper coating can reduce the paper gloss effectively without increasing…
This paper summarizes the recent developments of methanol-to-olefin(MTO/MTP) conversion over ZSM-5 molecular sieves,including synthesis mechanism of MTO/MTP,influence of pore structure and surface acid of ZSM-5 on its catalytic activity for MTO/MTP conversion,as well as modification of molecular sieve. The review focu…
This article explores the influence of temperature and residence time on the formation process of gel in the dope of polyacrylonitrile fiber through the contrast test, and the further research on the effects of gel itself properties to dope characteristics were carried out, so as to fully grasp the nature of the gel.
The influences of injection molding parameters on the residual stress of polycarbonate specimens were investigated by using orthogonal method.The results show that the most significant factor is melt temperature followed by cooling time and mold temperature,and the injection pressure has less influence.Because of the…
The foaming properties of ovalbumin were enhanced by enzymatic modification with alkaline proteinase.The effects of some reaction conditions such as enzymatic treatment time,substrate concentration and alkaline proteinase concentration on foaming capability and foaming stability of ovalbumin were investigated.Based on…
The purpose of this work is to compare the physico-chemical properties of collagen extracted from tilapia skin by different methods, hot water extraction, acid extraction and ultrasonic-assisted enzymatic extraction. The collagens exhibited distinctive absorption peaks in the wavelength range of 220–232 nm. There was…
The TiO2 sols are prepared by the method of microwave heating in which tetrabutyl titanate and ethanol as the materials,then pull the films on the common glass substrates by dip-coating method. The anti-fogging property of the films is tested.The results show that,the microwave can lead the reaction system warming uni…
To improve the corrosion resistance of anodic oxide film of magnesium alloy,thickness of the oxide film was used as main index to determine the optimal electrolyte composition. Surface morphology and corrosion resistance of the film were studied by drip experiment,scanning electron microscopy( SEM)and potentiodynamic…
Background: The leak test temperature and startup and shutdown pressure-temperatue(P-T) limits for reactor pressure vessel are specified in the ASME code and in the U.S. Part 50 to Title 10 of the Code of Federal Regulations. The ASME Code Case N-629 has been integrated into the 2013 ASME code. The KIc curves indexed…
To study carbide dynamic evolution law in the process of austenitizing further,the influence of different austenitizing time on microstructure and hardness were studied using scanning electron microscopy( SEM), X-ray diffraction analysis and hardness test. The results show that,as the austenitizing time increases from…
This paper discusses the design and development of yarn-dyed tablecloth fabrics. The style and characteristics of the fabric series have been shown in different color, organizational change and weaving process.Meanwhile, the performance of the newly developed fabrics has been tested and the result has been compared an…