The performance of high-strength bolt corrosion fatigue related to the safety of structure. It is generally thought that high-strength bolt crack size and the critical crack size conform to logarithmic normal distribution. If the probability density functions of crack size and the critical crack size...

Using dredged sediments as construction materials can alleviate the problem of sediment disposing, while properties have to be improved for corrosive environment. The effectiveness of using sodium bentonite and agent J(home-made agent) was investigated by means of laboratory tests to evaluate the compatibility...

Choosing cement and lime as inorganic binder, stabled chromium slag and then did the tests of the compaction, unconfined compressive strength and the stability for studying it as road base material, perfected the base material mixture ratio design and comparatively analyzed its mechanical properties...

Machine failure prognostic is concerned with the generation of long term predictions and the estimation of the probability density function of the remaining useful life. For this we propose a framework for data-driven prediction of RUL. To solve the problem of lacking direct condition information in...

In the absence of urea, urease is demonstrated to catalyze the hydrolysis and polycondensation of the SnCl2 aqueous system to form crystalline mesoporous SnO2 at room temperature. The resulting SnO2 has a high specific surface area of 231~248 m2 g-1 with uniform pore size at 3.3nm, and the porous structure...

The emissivity of different topographies of iridium films which were obtained using Ir(acac)3 (1.216×103 Pa) and hydrogen (5.575×104 Pa) in a cold-wall reactor at atmospheric pressure was studied. The bigger size the grains are, the uneven topography is obtained, the higher the emissivity is. The bigger...

Under the background of the catenaries of the second double line of Lan-Xin Railway in strong wind zone, we established the finite element mode of the four-span structure with catenary, and compared the value of model elastic to verify the correctness. Besides, we get some useful conclusions from the...

In order to improve the adsorption performance of Attapulgite (ATP) on dyes. ATP was modified by cetyl trimethyl ammonium bromide (CTAB), and the ATP before and after modified were characterized with XRD and FT-IR. The results showed that ATP had been modified with CTAB successfully, and crystal structure...

In order to improve the adsorption performance of Attapulgite (ATP) on dyes. The ATP activated with hydrochloric acid was organic modified with silane coupling agent KH570. And the modified attapulgites was characterized by Fourier transform infrared spectroscopy and X-ray diffraction technique. By evaluating...

In order to improve the dispersive and lipophilic properties of Nano-Al2O3 in composite coatings, surface modification of Nano-Al2O3 by titanate coupling agent TC-114 was researched. The modification effect on Nano-Al2O3 was measured with the activation index and the lipophilic degree. The influences...

working with waste water contain dyes presents challenges, so to find some photocatalyst artificial synthesized is a fascinating research job. Using Na2WO4•2H2O, Zn(NO3)2•6H2O, Bi(NO3)3•6H2O and HF as raw materials, three different mole ratio of photocatalyst of Bi2WO6-xF2x / ZnWO4 have been successfully...

An aqueous solution containing deionized water, cobalt nitrate hexahydrate (Co(NO3)2•6H2O), ethylene glycol (EG) and urea (NH2CONH2) were reacted in an autoclave with hydrothermal reaction method at 180 oC for 20 h to generate precursors with 0.1%, 0.2%, 0.3%, 0.4% and 0.5% of La (NO3)3. Then the precursor...

Using Ni(NO3)2•6H2O, Bi(NO3)3•5H2O and NH4VO3 as raw materials, Ni-doped BiVO4 photocatalysts with monoclinic scheelite were prepared by a low-temperature grinding method. The physical and optical properties of the samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM)...

Using Bi(NO3)3•5H2O, NH4VO3 and Zn(NO3)2•6H2O as raw material, Zn-doped BiVO4 photocatalysts were successfully prepared by a low-temperature grinding synthesis. And the samples were characterized by X-ray diffraction (XRD), Infrared spectroscopy (FT-IR) and UV-Vis diffuse reflectance spectroscopy (DRS)....

Fe/BiVO4 photocatalyst was synthesized via a low-temperature solid state method by using the Bi(NO3)3•5H2O, NH4VO3 and Fe(NO3)3•9H2O as starting materials. And X-ray diffraction (XRD), Scanning electron microscopy (SEM), Infrared spectroscopy (FT-IR) and Ultraviolet-visible diffuse reflectance spectra...

Using the Bi(NO3)3•5H2O, NH4VO3 and 50% Mn(NO3)2 solution as raw materials, the novel Mn2+-doped BiVO4 photocatalysts was successfully prepared by a low-temperature grinding synthesis. And characterized by X-ray diffraction(XRD) and scanning electron microscope(SEM). The Methyl Orange (MO) was simulated...

In this experiment, Sm (NO3) 3•6H2O, hexamethylene tetramine (HMT) and glucose as the main raw material, nanosized Sm2O3 was prepared by hydrothermal method. Sm2O3 samples were characterized by XRD, SEM, FT-IR, TG-DTA and DRS respectively. It found that plus C elements could increase the crystallinity...

Electromagnetic radiation pollution has become the fourth pollution sources on a threat to people's health. This paper selects ferrite as an absorbing agent, preparing a new anti-electromagnetic radiation gypsum board. The results show that, absorbing properties of gypsum board decreases first and then...

Kenitic of thermal degradation of PPS were studied undernitrogen, oxygen and airin formal works. The integral Coats-Redfern method based on single heating rate is employed for the kinetic analysis of the pyrolysis processunder different oxygen concentrations. The results indicated that only one stage...

As a result of resin mineral composite (RMC) possesses excellent vibration alleviating properties, it has attracted much attention in the field of elementary machine components. However, applications of RMC are restricted due to its limited mechanical properties. In this paper, the effects of baking...

Development of green clean energy has become one of promising challenge recently. One popular application of solar energy is photocatalysis, where semiconductors were used as photocatalyst to convert solar light into photoelectrons/holes. Photocatalysis technology has been widely applied for water splitting...

Na-MMT/Poly-Vinyl acetate-Acrylate (PVA) nanocomposite emulsion was prepared by in situ emulsion polymerization in the presence of exfoliated Na-MMT suspension. Effect Na-MMT content on the polymerization process and stability of the emulsion was studied. The water-proofing, thermal stability and anti-aging...

This paper use plum-blossom tourmaline as anion additive, filled to PET recycling material as modifying agents. Successfully prepared a composite material can release anions. The effect of different percent composition on heat distortion temperature and anion releasing performance of polyester recycled...

At present, tissue engineering scaffolds in the process of clinical medicine plays an irreplaceable important role. Based on the in-situ precipitation combined with frozen extraction, good n-HA dispersion and three-dimensional (3D) structure of n-HA/PLLA-PCL composite nanofibrous scaffolds were prepared....

A novel solvent-free photosensitive polyester based on the hyperbranched aliphatic polyesters has been studied. The hyperbranched aliphatic polyesters (Polymer A), which was prepared from 2,2-dihydroxymethyl butyric acid(DMBA) containing one carboxylic group and two hydroxylic groups, Trimethylolpropane(TMP)...

With the sustainable development of economy, solar energy has been widely used as a clean energy, photovoltaic industry has been rapid development. This article summarizes the summary and classification of solar photovoltaic modules frame; Comparative analysis is mainly focused on the aluminum frame,...

Reviewed the summary and classification of PV mounting system for solar power station. Analyzed the advantages and disadvantages of the optimum tilt angle of fixed, the horizontal single-axis tracking type, the diagonal single axis tracking type and the dual axis tracking type mounting system for solar...

Diamond-like carbon (DLC) film has drawn an intensive concern, but suffers from its poor toughness. Characterization method for the film toughness is not available to date, which hampers the researches for toughening DLC films. This work attempts to reveal the scratch failure mechanism from stress aspects,...

Hydraulic maintenance vehicle for aviation is a critical ground device to ensure the flight safety and the provision of hydraulic oil. A novel multi-functional vehicle for aerial hydraulic maintenance is designed for proposing a maintenance approach for modern aircraft. Aiming at issues of existing ground...

Photodegradation of Polycyclic Aromatic Hydrocarbons (PAHs) is a main environmental behavior and plays an important role in the fate of PAHs in environment. In order to understand the photodegradation law of Polycyclic Aromatic Hydrocarbons?PAHs?in soil, aeolian sand in blow-sand region of Northern Shaanxi...

The synthesis and fluorescence properties of water-soluble ZnSe:Fe/ZnS core/shell quantum dots with L-cysteine as the stabilizer in aqueous solution are reported in this paper. The structure, component and fluorescence properties of quantum dots were characterized by X-ray powder diffraction (XRD),infrared...

Deposition of few-layer graphene films on dielectric substrate by using a novel GaxNi1-x flux LPG (Liquid Phase Growth) method is demonstrated. The graphene films shape themselves as circular thin films. The influence of the ingredients in the GaxNi1-x system on the quality of synthesized graphene is...

In this study, a simple photochemical method for preparation of Ag/SnO2 composites is presented. Ag nanoparticles were grown on the surface of SnO2 particles in situ by UV light induced photoreduction of silver nitrate. Scanning electron microscopy (SEM), energy dispersive spectrometry (EDS) and X-ray...

Phase-change materials have attracted more and more attention in the fields of both academic research and industrial application. To develop a simple, efficient and environment-friendly method for preparing polymer phase-change materials, microwave-assisted technology was employed to synthesis urea-formaldehyde...

The chitosan was modified with L-alanine, which was used for the adsorption of cesium ion in aqueous solution. The results showed that: chitosan modified with L-alanine can remove cesium ions in the solution. When the initial concentration was kept as 150mg.L-1, the optimal adsorption conditions were:...

Large amounts of carbon dioxide (CO2) emissions caused more and more extreme weather. In this study, the maximum reduction of power CO2 emissions is the management objective based on three significant ways in the planning period, which are energy conservation, reduction project and power structure adjustment....

Power industry as the main source of CO2 emissions, is facing tremendous challenge of CO2 emission reduction during the periods of “12th Five-year” and “13th Five-year”. How to maximize the reduction of power CO2 emissions under the premise of regional economic development and energy requirements is...

We propose and demonstrate Sodium Zinc Molybdenum Tellurite glasses (Na2O-ZnO-MoO3-TeO2 or NZMT) as suitable hosts for rare earth ion Holmium (Ho3+) operating at 1.2?m and 1.37?m wavelength. The density, the refractive indices, the optical absorption have been measured. The Judd-Ofelt intensity parameters...

A simple, inexpensive, and efficient one-pot synthesis of 1,4-dihydropyridine via Hantzsch reaction was achieved in good to excellent yields under catalyst free conditions by using PEG400 as solvent. In this reaction, PEG-400 was used as the solvent, which has such advantages: absolutely nontoxic, inexpensive,...

The Pd Nanoparticles attached on graphene nanosheet (GNS) were synthesized by a simple method. The morphology, structure and component for the a obtained graphene/Pd hybrids have been characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and X-ray photoemission spectroscopy...

a hybrid material of three-dimensional graphene sheets beaded with bimetallic PtPd nanoparticle was prepared by using a simple process. The three-dimensional graphene/PtPd hybrids exhibited an interconnected microporous framework with PtPd NPs dispersed and encapsulated within the graphene sheet layers....

Manganese oxide/mesoporous carbon (MnO2/MCs) spherical composites were prepared by hydrothermal method. The resorcinol and potassium permanganate were used as carbon source and manganese source,respectively. The morphology and pore character of the carbon materials were investigated by scanning electron...

The aim of this paper was to investigate adsorption of cupric ionin wastewater with a new type of adsorbent, namely natural oxidized celluloses(NOCs), whichwas synthesized in a specialselective oxidation system withraw cellulose. The characterization of NOCs was investigated by FTIR and the morphology...

A simple and reliable method combining dispersive liquid-liquid microextracion (DLLME) with capillary gas chromatography (GC) using flame ionization detection was developed for simultaneous determination of phenol (PN), p-methyl phenol (p-MPN), o-nitrophenol (o-NPN), and 2, 4-dichlorophenol (DCPN) in...

Heat-sealing BOPP films are used widely as commercial packages in recent years. However, nowadays there are some obstacles in heat-sealing BOPP films producing, for example the heat sealing strength is relatively low, which makes heat-sealing BOPP films not satisfy the increasing demands of the modern...

Objective: a fast, simply, reliably and accurately high-performance liquid chromatography (HPLC) method for the simultaneous quantitation of commonly used organic acid and monosaccharides in food industry such as benzoic, malic, citric and quinic acid, fructose, glucose has been developed. Methods: In...

According to the situation of water plugging in horizontal well using screen pipe completion in Liaohe oilfield, emulsion polymer gel, relative permeability correctives and oil soluble resin are studied in the paper. Three systems are evaluated in the lab. The results indicate that emulsion polymer gel...

The preparation of peroxyacetic acid (PAA) using acetic acid and hydrogen peroxide (H2O2) in the presence of perfluorinated resinsufonic acid (Nafion-H) in room temperature has been studied. The prepared PAA is determinate with Au electrode by cyclic voltammograms of after background subtraction. A form...

The aim of this work is to study the possibilities of structural-phase transformations of carbon-containing raw materials by mechanical activation and plastic deformation on dispersion strengthening and modification of aluminium composites. We studied the processes of structure formation of ligatures...

Graphitized steel in some cases, due to its intermediate position in composition and properties between low-carbon steel and cast iron, can provide the necessary combination of properties of structural material. They are successfully replace ductile iron, carbon and low-alloy steel in the manufacture...