Materials Literature
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Due to increasing energy demand and concern over the urban environment, there is a need to develop a hydrogen based economy or turning to hydrogen as a source of fuel. The rapid development of fuel cells can be considered a solution as it can generate power with higher efficiency and zero emissions. Hence, a safe and…
The most important pathogen for apples is Penicillium expansum that is the causal organism of blue mould. Postharvest losses are controlled with chemical fungicides such as TBZ but a growing concern for human health and a greater awareness for environmental conservation have multiplied the studies on new ecological te…
The processes developing in various rat tissues after implantation of polymeric polyhydroxyalkanoate (PHA) film fragments with adsorbed autologous multipotent stromal (mesenchymal) cells of bone marrow origin (AMMSCBM), were studied by methods of light microscopy. After the implantation of PHA film with AMMSCBM, the n…
The effect of alkoxysilane external donors on propylene polymerization catalyzed by Ziegler-Natta catalyst was studied and the as-polymerized polypropylene(PP) was characterized by means of DSC,GPC and WAXRD.The results indicate that dialkoxysilanes show the high activity and stereo-regularity while tetraalkoxysilanes…
Multi-wall carbon nanotubes (MWCNTs)- doped polyaniline (PANI) nanopowders were prepared by chemical oxidation polymerization. Then, the MWCNTs- doped PANI nanopowders were modified by a radio fre- quency (RF) oxygen plasma source. The morphology and structure of modified MWCNTs-doped PANI nanorods were analyzed by SE…
A shot blasting process is to improve the surface quality of stainless steels. The process is similar to a well-known shot peening that is used to strengthen the surface via the residual stress. In the shot blasting process, it is important to decide many parameters, such as the size, incident angle and velocity of sh…
The cationic surfactant,cetyl trimethyl ammonium bromide(CTAB),was added into the nano-hydroxyapatite(HA) colloid for dispersion of HA nano powders.The effects of surfactants on the size,shape and dispersion effect of HA powders were studied.The results show that with increase of CTAB concentration the dispersion effe…
Tianwan NPP Units 1 and 2 plans to transit to long fuel cycle from the year of 2014.The new type fuel assembly TVS-2Mwill be introduced into the reactor core composed by AFA assemblies.After three fuel cycles,the reactor core will be loaded by all TVS-2M fuel assemblies and realize long fuel cycle. The thermal-hydraul…
Under the high temperature and high pressure(5.0GPa,1500 ℃)conditions,PDC was prepared by mix-powder method using Ni70 Mn25 Co5 alloy as sintering aids.SEM and Micro-Raman spectroscopy were used to investigate the morphology and structure of diamonds sintered body,and the results show that the diamonds,after sintering…
The fine grained high strength(SFG) IF steel is taken as the research object.The annealing experiment is carried out at different holding time of 850 ℃.The microstructure observation is studied by optical microscopy,and the morphology of secondary particles and composition analysis are carried out on the transmission…
Combined with the main features of superhard coating material,the properties of diamond coating,diamond-like coating,cubic boron nitride coating and manometer multiple layer structure coating and their application in modern engineering were discussed.
Light is an exquisite reagent for controlling the activity of biological systems, often offering improved temporal and spatial resolution over strictly genetic, biochemical, or pharmacological manipulations. This chapter describes a general approach for developing small molecules that, upon irradiation with light, may…
This paper analyzes wear mechanism on water wall of circulating fluidized bed boiler, expounds laser cladding preparation coating technology and its superiority and reaches the possibility for generalization of this new technology on supercritical circulating fluidized bed boiler.
Cellulose as the main structural and component of plant cell wall is the most abundant renewable resource in nature.However,cellulose utilization is extremely difficult because of the chemical and physical complexity of plant cell walls.Cellulase is an efficient approach for degradation of cellulose.Recently,Cellulase…
The layered LiNi0.25Co0.5Mn0.25O2 cathode material for Li-ion batteries was synthesized by high temperature solid-state method.XRD,SEM,XPS and charge-discharge cycling measurements were used to characterize the structure,morphology and electrochemical performance.The results show that the sample synthesized at 950 ℃ f…
Two sex-limited marking varieties of Chinese strain named Jin and Xiu and one sex-limited marking variety of Japanese strain named Xiang were bred by means of hybridization,back-crossing and pedigree selection after directional selection among multiple generations under different climatic circumstances of spring,summe…
Perovskite structure manganese oxide thermal control coatings were synthesized by solid-state reaction method.The relationship between the total hemispherical emittance(eH)and the temperature of the thermal control coatings was measured on a calorimetric emissometer which was based on the steady state calorimetric met…
Radiation crosslinked product of bromobutyl rubber(BIIR)was achieved by electron beam(EB)irradiation curing.Gelling dose of BIIR was estimated to be 12kGy.Various polyvinyl monomers were tested to enhance EB crosslinking of BIIR in order to obtain a high crosslinking degree at a low dose to avoid main chain degradatio…
The structure and property for forgings,syphons and heads pressure-bearing components and splicing welds and cladding plates during high temperature forming and heat treatment were discussed.It is introduced the methods of recovering and improving structure and property in accordance with the actual produce and provid…
A nickel layer was electrodeposited on the surface of magnesium alloy and its pretreatment process was studied carefully.The phase structure and composition of each treated layer were analyzed by X-ray diffraction(XRD),the surface morphology observed by scanning electron microscopy(SEM),and the corrosion resistance of…