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| 1 | EMBRITTLEMENT OF Fe-Cr-Al ALLOYS AND EFFECT OF Y ADDITION显示文摘A high temperature embrittlement occures in Fe-15Cr-4AI and Fe-20Cr-4Al alloys treatedover 1000 C.It is caused mainly by 475℃ brittleness during cooling.When a secondarytreatment at 500℃ was conducted,the 475℃ brittleness developed very rapidly.After only15 rain of the treating,little plasticity was remained for all samples pretreuted at the temper-atures over 1000℃ and cooled in water.However,no 475℃ brittleness was generated whenpretreating temperature was below 1000℃,Addition of Yttrium can inhibit not only graingrowth,but also 475℃ brittleness.For the alloys with 0.2—0.4 wt-%Y,after treating at800—1300℃,the plasticity did not decrease and the properties of furnace cooled sampleswere not lower than those of water cooled samples. | LI Bei WU Shuangxia LI Dianchen Baotou Research Institute of Rare Earth Ministry of Metallurgical Industry,Baotou,ChinaMA Ruzhang University Science and Technology Beijing,Beijing,China Baotou Research Institute of Rare Earth,Ministry of Metallurgical Industry,Baotou 014010,China | 1993 | Acta Metallurgica Sinica(English Letters)1993，6，2： | 4 |
| 2 | Electrochemical Hydrogen Storage Performance of the Nanocrystalline and Amorphous Pr-Mg-Ni-based Alloys Synthesized by Mechanical Milling显示文摘The PrMg12-type composite alloy of PrMg_(11)Ni + x wt% Ni (x=100,200) with an amorphous and nanocrystalline microstructure were synthesized through the mechanical milling.Effects of milling duration and Ni content on the microstructures and electrochemical hydrogen storage performances of the ball-milled alloys were methodically studied.The ball-milled alloys obtain the optimum discharge capacities at the first cycle.Increasing Ni content dramatically enhances the electrochemical property of alloys.Milling time varying may obviously impact the electrochemical performance of these alloys.The discharge capacities show a significant upward trend with milling duration prolonging,but milling for a longer time more than 40 h induces a slight decrease in the discharge capacity of the x=200 alloy.As milling duration increases,the cycle stability clearly lowers,while it first declines and then augments under the same condition for the x=200 alloy.The high-rate discharge abilities of the ball-milled alloys show the optimum values with milling time varying. | 侯忠辉 YUAN Zeming FENG Dianchen SUN Hao 张羊换 | 2021 | Journal of Wuhan University of Technology(Materials Science)2021，36，1： | 2 |
| 3 | Modifying activated carbon with hybrid ligands for enhancing aqueous mercury removal显示文摘 | Jianzhong Zhu Baolin Deng John Yang Dianchen Gang | 2009 | Carbon2009，，8： | 1 |
| 4 | Using chlorine demand to predict TTHM and HAA9 formation显示文摘 | Daniel Dianchen Gang Robert L Segar Jr Thomas E Clevenger | 2002 | J AWWA2002，94，10： | 1 |
| 5 | Computing the solu- tion of the m-Korteweg-de Vries equation on Turing machines显示文摘 | LU Dianchen WANG Qingyan | 2008 | Electronic Notes in Theoretical Comput- er Science2008，202，3： | 1 |
| 6 | New exact solutions for the generalized BBM and Burgers - BBM equations 显示文摘 | Hong Baojian Lu Dianchen | 2008 | World Journal of Modelling and Simulation2008，4，4： | 1 |
| 7 | Adsorptive removal of resorcinol on a novel ordered mesoporous carbon(OMC) employing COK-19 silica scaffold:Kinetics and equilibrium study显示文摘Phenolic compounds and their derivatives have been found in industrial wastewater, which pose threats to the natural environment. Ordered mesoporous carbon(OMC) has been identified as an ideal adsorbent possessing high specific surface area and large pore volume to alleviate these pollutants. A novel ordered mesoporous carbon was prepared using COK-19 template with the cubic Fm3 m structure for the first time. Ordered mesoporous silica COK-19 was synthesized and reported in 2015. Sucrose as the carbon precursor was impregnated into the mesopores of silica and converted to carbon through carbonization process using sulfuric acid as a catalyst. Ordered mesoporous carbon was obtained after the removal of silica framework using hydrofluoric acid. Boric acid was employed for the preparation of OMCs with tunable pore sizes in the range of 6.9–16.6 nm. Several characterization techniques such as nitrogen adsorption–desorption isotherms, transmission electron microscope(TEM), Fourier transform infrared spectroscopy, Boehm titration and elemental analysis were employed to characterize the OMCs. The pore size analysis and TEM images confirmed that OMC has replicated the mesostructure of the COK-19. Results obtained from adsorption kinetics and isotherms suggest that the Pseudo-second-order model and Langmuir isotherm well described the experimental data. | Zaki Uddin Ahmad Qiyu Lian Mark E.Zappi Prashanth R.Buchireddy Daniel Dianchen Gang | 2019 | Journal of Environmental Sciences2019，31，1： | 1 |
| 8 | Relationship of chlorine decay and THMs formation to NOM size显示文摘 | GANG Dianchen ELEVENGER T E BANERJI S | 2003 | Journal of Hazardous Materials2003，96，： | 1 |
| 9 | As ( III ) removal using an iron-impregnated chitosan sorbent 显示文摘 | Daniel Dianchen Gang Deng Baolin Lin LianShin | 2010 | Journal of Hazardous Materials2010，182，10： | 1 |
| 10 | Electroacupuncture improves neurological deficits and enhances proliferation and differ-ofendoge- nousnerve stem cells in ratswith focal cerebral is- chemia显示文摘 | Jing Tao Xie HuaXue Li DianChen | 2010 | Neurol- Res2010，32，2： | 1 |
| 11 | New exact solutions for the generalized BBM and Burgers = BBM equations显示文摘 | Baojian Hong Dianchen Lu | 2008 | World Journal of Modeling and Simulation2008，4，4： | 1 |
| 12 | α-丙二醇-水相中氯代二噁英的催化加氢脱氯降解显示文摘二噁英类物质由于具有亲脂性、高毒性、化学结构稳定、难生物降解而在环境中持久存在,成为持久性有机污染物的典型代表.二噁英的去除方法研究,一直是国际研究的热点.以5%钯/炭为催化剂,氢气作为氢源,以环境友好的α-丙二醇-水为溶剂,在1mol/L氢氧化钠的碱性条件下,研究了1,2,7,8-四氯代二噁英(1,2,7,8-TCDD)的催化加氢脱氯降解.探讨了反应温度、初始浓度、反应时间、催化剂用量等对1,2,7,8-TCDD去除率的影响.结果表明,在反应初期(前5min),反应速率较快;在反应温度为45℃,催化剂用量为0.5g/mL,反应时间为150min的条件下,1,2,7,8-TCDD的去除率达97.0%;初始浓度对1,2,7,8-TCDD的去除率没有影响.初步试验结果表明,催化加氢脱氯降解是去除环境中氯代二噁英的有效手段,但实际应用还有待于进一步研究. | 金士威 华晔 李晨曦 邹彬 Daniel Dianchen Gang | 2013 | 武汉工程大学学报2013，35，12： | 0 |
| 13 | Numerical solutions of nonlinear fractional Wu-Zhang system for water surface versus three approximate schemes显示文摘This paper examines the effects of three distinct numerical schemes(Adomian Decomposition,quintic&septic Spline methods)to investigate semi-analytical and approximate solutions on Wu-Zhang(ZW)system.It describes the(1+1)-dimensional dispersive long wave in two horizontal directions on shallow waters.The ZW model is one of the fractional nonlinear partial differential equations.Conformable derivatives properties are employed to convert the nonlinear fractional partial differential equation into an ordinary differential equation with integer order so as to obtain the approximate solutions for this model.The solutions obtained for each technique were compared to reveal their relationship to their characteristics illustrated under the suitable choice of the parameters values.The obtained solutions showed the power,easiness,and effectiveness of these methods on nonlinear partial differential equations. | Mostafa M.A.Khater Raghda A.M.Attia Dianchen Lu | 2019 | Journal of Ocean Engineering and Science2019，4，2： | 0 |
| 14 | Spatiotemporal variations in ecological quality of Otindag Sandy Land based on a new modified remote sensing ecological index显示文摘Otindag Sandy Land in China is an important ecological barrier to Beijing;the changes in its ecological quality are major concerns for sustainable development and planning of this area.Based on principal component analysis and path analysis,we first generated a modified remote sensing ecological index(MRSEI)coupled with satellite and ground observational data during 2001–2020 that integrated four local indicators(greenness,wetness,and heatness that reflect vegetation status,water,and heat conditions,respectively,as well as soil erosion).Then,we assessed the ecological quality in Otindag Sandy Land during 2001–2020 based on the MRSEI at different time scales(i.e.,the whole year,growing season,and non-growing season).MRSEI generally increased with an upward rate of 0.006/a during 2001–2020,with clear seasonal and spatial variations.Ecological quality was significantly improved in most regions of Otindag Sandy Land but degraded in the southern part.Regions with ecological degradation expanded to 18.64%of the total area in the non-growing season.The area with the worst grade of MRSEI shrunk by 15.83%of the total area from 2001 to 2020,while the area with the best grade of MRSEI increased by 9.77%of the total area.The temporal heterogeneity of ecological conditions indicated that the improvement process of ecological quality in the growing season may be interrupted or deteriorated in the following non-growing season.The implementation of ecological restoration measures in Otindag Sandy Land should not ignore the seasonal characteristics and spatial heterogeneity of local ecological quality.The results can explore the effectiveness of ecological restoration and provide scientific guides on sustainable development measures for drylands. | ZHAO Xiaohan HAN Dianchen LU Qi LI Yunpeng ZHANG Fangmin | 2023 | Journal of Arid Land2023，15，8： | 0 |
| 15 | Impact of melting heat transfer in the time-dependent squeezing nanofluid flow containing carbon nanotubes in a Darcy-Forchheimer porous media with Cattaneo-Christov heat flux显示文摘This study aims to investigate the time-dependent squeezing of nanofluid flow, comprising carbon nanotubes of dual nature, e.g. single-walled carbon nanotubes, and multi-walled carbon nanotubes,between two parallel disks. Numerical simulations of the proposed novel model are conducted,accompanied by Cattaneo-Christov heat flux in a Darcy-Forchheimer permeable media. Additional impacts of homogeneous–heterogeneous reactions are also noted, including melting heat. A relevant transformation procedure is implemented for the transition of partial differential equations to the ordinary variety. A computer software-based MATLAB function, bvp4c, is implemented to handle the envisioned mathematical model. Sketches portraying impacts on radial velocity, temperature, and concentration of the included parameters are given, and deliberated upon. Skin friction coefficient and local Nusselt number are evaluated via graphical illustrations. It is observed that the local inertia coefficient has an opposite impact on radial velocity and temperature field. It is further perceived that melting and radiation parameters demonstrate a retarding effect on temperature profile. | Muhammad Ramzan Nomana Abid Dianchen Lu Iskander Tlili | 2020 | Communications in Theoretical Physics2020，72，8： | 0 |
| 16 | Three-dimensional mixed convection flow with variable thermal conductivity and frictional heating显示文摘In this article,three-dimensional mixed convection flow over an exponentially stretching sheet is investigated.Energy equation is modelled in the presence of viscous dissipation and variable thermal conductivity.Temperature of the sheet is varying exponentially and is chosen in a form that facilitates the similarity transformations to obtain self-similar equations.Resulting nonlinear ordinary differential equations are solved numerically employing the Runge-Kutta shooting method.In order to check the accuracy of the method,these equations are also solved using bvp4c built-in routine in Matlab.Both solutions are in excellent agreement.The effects of physical parameters on the dimensionless velocity field and temperature are demonstrated through various graphs.The novelty of this analysis is the self-similar solution of the threedimensional boundary layer flow in the presence of mixed convection,viscous dissipation and variable thermal conductivity. | M Qasim N Riaz Dianchen Lu S Shafie | 2020 | Communications in Theoretical Physics2020，72，3： | 0 |
| 17 | Solitary wave solutions for the generalized Zakharov-Kuznetsov-Benjamin-Bona-Mahony nonlinear evolution equation显示文摘In this paper,we utilize the exp(−ϕ(ξ))-expansion method to find exact and solitary wave solutions of the generalized Zakharov-Kuznetsov-Benjamin-Bona-Mahony nonlinear evolution equation.The generalized Zakharov-Kuznetsov-Benjamin-Bona-Mahony nonlinear evolution equation describes the model for the propagation of long waves that mingle with nonlinear and dissipative impact.This model is used in the analysis of the surface waves of long wavelength in hydro magnetic waves in cold plasma,liquids,acoustic waves in harmonic crystals and acoustic-gravity waves in compressible fluids.By using this method,seven different kinds of traveling wave solutions are successfully obtained for this model.The considered method and transformation techniques are efficient and consistent for solving nonlinear evolution equations and obtain exact solutions that are applied to the science and engineering fields. | Aly R.Seadawy Dianchen Lu Mostafa M.A.Khater | 2017 | Journal of Ocean Engineering and Science2017，2，2： | 0 |
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