Search results

Compatibility of Polyvinylidene difluorid/Polyurethane and Preparation of Composite Tubular Membrane Dan-Ying Zuo1, Hong-Jun Li*2, Chang-Hai Yi1 and Hou-Lei Gan1 1 State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Hubei, 430073, P.
China 2 Department of Industrial Engineering, Wuhan Textile University, Hubei, 430073, P.
Polyurethane (PU) with excellent toughness and good hydrophilicity is a proper modified material for PVDF membrane because PU could compensate greatly the tenacity and hydrophilicity. 
Experimental Materials PVDF (FR904, Mw = 2×106, Mn = 4.7×105) was supplied by Shanghai 3F Ltd.

In theory, a part can be designed on a computer using one of the ubiquitous software packages for engineering drawings, and that drawing can be transferred to a 3D printing machine, which then produces the computer-drawn part with no custom machinery or tooling.
Because titanium is a viable material for PEMFC BPPs, DMLS lends itself naturally to this application.
Surface preparation and corrosion coating: A key attribute of fuel cell BPPs is that they must be highly conductive as I2R losses can add significant inefficiencies to the fuel cell operating, plus create unnecessary heat.
The choice of die radius and total material elongation is particularly important to avoid tearing, as can be seen in the micrograph in Fig. 5.
The BPPs are then assembled into a stack with the appropriate sealing material and end plates to apply the correct compression to the system.

A Smart Hydrothermal Synthesis for Cobble-Like Porous CeO2 and their Superior Catalytic Performance for NH3-SCR of NOx Xiaofei Niu1,a*, Furong Tu1 1Anhui Key Laboratory of Spintronics and Nanomaterials Research, Suzhou University, Suzhou 234000, Anhui, PR China aszniuxf0123@126.com Keywords: Hydrothermal method; Nanoparticles; Porous structure; Defects; Catalytic performance Abstract.
In consideration of these features, ceria-containing materials have attracted widely attention as SCR catalysts for NOx decrease both in stationary and mobile sources.
The selected area electron diffraction (SAED) pattern (Fig. 2f) indicates that each cobble-like CeO2 nanoparticles is a polycrystalline material.
It is worth noting here that the above reactions took place at mixed solution of the alcoholic and deionized water, for the reaction rate could be slowed down due to a high viscosity of ethanol, which may result in a lower nucleation rate in the reaction system to form loosened and porous materials.
Qu, Surface engineering on CeO2 nanorods by chemical redox etching and their enhanced catalytic activity for CO oxidation, Nanoscale 7 (2015) 11686-11691

Preparation and Spectrial Studies of Silicon Nitride Thin Films Containing Amorphous Silicon Quantum Dots Sun Jiaxina, Zhou Bingqingb*, Gu Xinc Key Laboratory of Physics and Chemistry for Functional Material, College of Physics and Electron Information, Inner Mongolia Normal University, Huhhot 010022, China a2637255253@qq.com, bzhoubq@imnu.edu.cn, c1558910050@qq.com Keyword: plasma enhanced chemical vapor deposition, silicon-rich silicon nitride film, annealing Abstract: Silicon-rich silicon nitride thin films are prepared on P-type monocrystalline silicon wafer (100) and glass substrate by plasma chemical vapor deposition with reaction gas sources SiH4 and NH3.
As that dimension of the amorphous silicon quantum dot is limit by the embedded matrix material, the Si-rich silicon nitride thin film with the above two sets of optimized experimental parameters are studied and further annealed.
The substrate material is N-type silicon wafer which is cleaned and etched by 2.5% HF.
References [1] ZHANG Lin-rui, ZHOU Bing-qing, ZHANG Na, et al, Influence of Nitrogen Flow Rate on the Structure and Luminescence Properties of Silicon-Rich Silicon Nitride Film Materials in a High Hydrogen Atmosphere, J.
[2] The Properties of SiNx Films with Silicon Quantum Dots and Their Applications in Solar Cells, Thesis Submitted in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in Engineering.(2012)

A Simple and High-performance Hydrazine Sensor Based on Graphene Nano Platelets Supported Metal Nanoparticles Yi Liu1, Beibei Li1, Wei Wei1, Qijin Wan1,a and Nianjun Yang1 1 School of Chemical Engineering and Pharmacy, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan, China arsqijinwan@163.com Keywords: Hydrazine; AuPd nanoparticles; Graphene; Electrodeposition Abstract.
In this work, we use graphene as base material, AuPd nanoparticles are electrodeposited on the surface of graphene by a co-deposition method from a mixture of HAuCl4 and HPdCl4 to parepared the AuPd/GR/GCE.
Li, Advanced Materials 23 (2011) 1044
Kuang, Journal of Materials Chemistry 22 (2012) 1781.

Mechanical Design Engineering, Chungnam National University, Taejon, Korea a hkkim1@kaeri.re.kr, bbruce95@hanmail.net, cex-leeyh@kaeri.re.kr, d yhjung@kaeri.re.kr, e kimjhoon@cnu.ac.kr Keywords: Fretting wear, Nuclear fuel, Slip displacement, Vibration behaviour, Supporting condition Abstract.
Material of the supports as well as the tube is the same Zirconium alloy whose mechanical properties and chemical compositions are listed in Table 1.
The specimens were fabricated from the as-received materials for the commercial nuclear fuels.
The key point of the present method is to evaluate the slip displacement at the contacts with the variation of the distance between the tube and the sensors, δ
Int'l Meeting on LWR Fuel Performance (2004), Paper No. 1005 [5] P.A Engel: Impact Wear of Materials (Elsevier Scientific Publishing Co., The Netherlands 1978) Table 2 Evaluated slip ranges (at center oscillation range 0.7mm) Axial slip (µm) Transverse slip (mm) Location of contact 5N Gap 0.2mm 5N Gap 0.2mm Spring (S) 0.28 9.49 0.06 6.11 Left dimple (DL) 0.77 10.0 0.15 6.76 Right dimple (DR) 0.17 8.92 0.05 5.51

Here, the purpose is to focus on the aspects related to the financial evaluation, which represents one of the key elements in the predisposition of a configuration management and organisation of services and activities of a system to valorisation, once fixed the social-cultural ones.
Table 2 Costs and operating revenues (first year of full activity) Operating costs Year 3 Purchasing & consumption of goods and services € 29.510,00 Ordinary maintenance € 1.790,00 Staff € 54.500,00 Extraordinary maintenance € 9.000,00 Consumption € 7.100,00 Other fixed costs € 3.800,00 Other variable costs € 6.750,00 Total € 112.450,00 Returns from tariffs Total € 112.450,00 Balance Net Total Operating Costs € 112.450,00 Total Returns from tariffs € 112.450,00 Total Balance Net € 0,00 As far as it concerns the source of revenues, it has been identified service delivery of a cultural nature (such as guided tours, organization of University stages, sale of promotional material and entrance tickets to the Park).
Tajani: The transfer of development rights for the regeneration of brownfield sites In: Applied Mechanics and Materials Vols. 409-410 (2013) pp 971-978 © (2013) Trans Tech Publications, Switzerland, doi:10.4028/www.scientific.net/AMM.409-410.971 [7] F.
In: 2nd International Conference on Civil Engineering, Architecture and Sustainable Infrastructure (ICCEASI 2013).
Applied mechanics and Materials, vol. 438-439, p. 1830-1835, Trans Teach Publications Ltd, ISSN: 1660-9336, doi: 10.4028/ www.scientific.net/ AMM.438-439.1830, (2013)

Nanostructured TiAlSi-CN:Me/a-CN:Si3N4 Composite Coatings Deposited by Advanced PVD Technique Uldis Kandersa*, Janis Lungevicsb, Armands Leitansc, Irina Boikod, Karlis Berzinse and Zane Trubinaf Riga Technical University, Institute of Mechanics and Mechanical Engineering, Latvia auldis.kanders@rtu.lv, bjanis.lungevics@rtu.lv, carmands.leitans@rtu.lv, dirina.boiko@rtu.lv, ekarlis.berzins_3@rtu.lv, fzane.trubina@rtu.lv Keywords: nanostructured composite coatings; low friction and low wear rate; carbonitrides; high-power reactive magnetron sputtering; hafnium.
Furthermore, the addition of small amounts of Al and Si constituents to the nanocomposite structure of these materials considerably improved their tribological and anti-corrosive properties at operating temperatures exceeding 400 °C, such as hardness and wear resistance, thermal stability and denitrification temperatures [4].
High-power magnetically confined plasma sputtering allows to achieve several underlying key objectives: (i) to produce high density ion-plasma within a range of 1011 – 1013 cm-3 nearby MST; erosion zone; (ii) to deposit high density coatings because characteristic island-like nucleation processes are suppressed due to high sputtering rates; (iii) to stretch less dense ion-plasma region between MST and sample holders due to magnetically unbalanced MSDs; (iv) to improve chemical reactivity of the sputtered particles due to enhanced surface diffusion activated by ion-plasma immersion conditions.
The NSC film-samples showed foremost a positive skin effect up to a penetration depth of about 500 nm while bulk steel substrate in the same indentation depth-range of 12 – 500 nm demonstrated convincingly a negative skin effect or normal indentation size effect (ISE) that is characteristic for bulk material samples.
Bajajb, A critical review of diamond like carbon coating for wear resistance applications, International Journal of Refractory Metals & Hard Materials. 78 (2019)107-122

Numerical Study of heat transfer of RP-3 at Supercritical Pressure REN Yu-zhou1, a, ZHU Jian-qin1, b, DENG Hong-wu1, c 1 National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics, School of Jet Propulsion, Beihang University, Beijing 100191, China arainboat8@yahoo.com.cn, bzhujianqinbuaa@sina.com, cdenghw@buaa.edu.cn Keywords: supercritical pressure; RP-3; surrogate fuel; heat transfer Abstract.
Density ρ,viscosity coefficient µ and coefficient of thermal conductivityλof surrogate fuel are calculated by adopting the Extended Corresponding States to, namely, the results is got according to the corresponding relation between surrogate fuel and reference materials.
Reference material is propane, its state equation adopts the MBWR (Modified Benedict - Webb - Rubin) equation[8] of 32 parameters, and the detailed calculation process please see TRAPP (transport properties prediction) stated in the reference [9].
During the calculation of the thermodynamic properties Cp and specific enthalpy h, firstly the state parameter of surrogate fuel is transformed into reference materials’ (Extended Corresponding States), and then according to the p-v-T relationship of propane, Cp and h of surrogate fuel can be calculated.
Figure 6 Contrast between experiment data and calculated data of outside wall temperature From figure 6, it can be seen that numerical simulation of flow heat transfer in vertical pipe can not only reflect the change trend of wall temperature, also meet the engineering requirements in the numerical accuracy and the maximum error is no more than 10%, the accuracy of the property model and calculation method is validated.

Preparation of Carbaryl-imprinted Capillary Monolithic Column for Screening of Carbaryl from Three Carbamates Mixture Can ZHANG1,a* , Jian-rong CAI1, Yu-qing DUAN1, Liang XU 2,b,* 1 School of Food & Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China 2Tianjin Key Laboratory on Technologies Enabling Development Clinical Therapeutics and Diagnostics (Theranostics), School of Pharmacy, Tianjin Medical University, Tianjin 300070, China aemail: zhangcan@ujs.edu.cn, bemail: xuliang@tmu.edu.cn *Corresponding author: Can Zhang1,a* Liang Xu1,b* Keywords: Organic-inorganic hybrid, Carbaryl-imprinted capillary monolith, Separate.
Because anti-carbaryl antibody was used as the sensing material in some assays, such as ELISA and CEIA, carbaryl can be recognized rapidly and sensitively.
Materials and Methods Materials Carbaryl, fenobucarb and metolcarb were purchased from Sigma (St Louis, MO, USA).