Search results

Comparative Effects of Graphitic Carbon Nitride Precursors on the Photocatalytic Degradation of Pyrene Syarifah Nurhusna Qadirah Syed Abd Halim1,a, Noor Aina Mohd Nazri1,b* and Nik Abdul Hadi Md Nordin2,c 1Section of Chemical Engineering, Universiti Kuala Lumpur Branch Campus Malaysian Institute of Chemical and Bioengineering Technology (UniKL MICET), Lot 1988, Kawasan Perindustrian Bandar Vendor, Taboh Naning, 78000 Alor Gajah, Melaka, Malaysia 2Chemical Engineering Department, Universiti Teknologi Petronas, Seri Iskandar, 32610, Perak, Malaysia asyarifah.halim19@s.unikl.edu.my, bnooraina@unikl.edu.my, cnahadi.sapiaa@utp.edu.my Keywords: Water treatment, Pyrene, Photocatalytic degradation, Scavenging trapping reactive species, Composites g-C3N4.
Methods of degradation Material used Efficiency of degradation Time degradation Ref.
Materials and Methods Chemicals and reagents.
Acetonitrile of HPLC standard was purchased from Avantor Performance Materials Sdn Bhd.
This results demonstrated that g-C3N4-(DG) did not exhibit a photo-corrosion behaviour because it is made of metal-free materials, but the decreased efficiency could be attributed to the loss of the heterogeneous photocatalyst during the process.

Field Investigation of Influences of Load on Pile Top on Negative Skin Friction Behaviors Linong Xia1,2, a, Yundong Miao2,b , Shun Li1 and Xin Tong1 1Department of Civil Engineering, Changsha University, Changsha, Hunan, P.R.China 2College of Civil Engineering and Mechanics, Xiangtan University, Xiangtan, Hunan, P.R.China alnxia@126.com, bmiaoyundong@126.com Key words: Load On Pile Top; Negative Skin Friction; Influence; Field Investigation Abstract.
Engineering Geological Conditions and Design of Piles Engineering Geological Conditions.
According to the experience formula in the engineering geology manual, the relative density of the added sand (Dr) is 0.24, modulus of compressibility (Es) is 5.0MPa and friction angle (φ) is 27.3°.
The stress is calculated according to the tested strain and the material index of pile.
Fellenius: Canadian Geotechnical Journal Vol. 9 (1972), p. 323 [2] Shidong Ma: Rock and Soil Mechanics Vol. 18 (1997), p. 8(In Chinese) [3] Fuquan Chen, Xiaonan Gong and Shidong Ma: Journal of Building Structures Vol. 21 (2000), p. 77(In Chinese) [4] Linong Xia, Hongxia Liu and Mingxian Ou: Chinese Journal of Rock Mechanics and Engineering Vol. 28 (2009), p. 1177(In Chinese) [5] Qing Yang, Gangqiang Kong and Pengyi Zheng: Rock and Soil Mechanics Vol. 29 (2008), p. 1955(In Chinese) [6] Dengping Yuan, Hongwei Huang and Jinrong Ma: Underground Space Vol. 24 (2004), p. 456(In Chinese) [7] Linong Xia, Xinghua Wang: Mining and Metallurgical Engineering Vol. 25 (2005), p. 1(In Chinese) [8] Linong Xia, Xinghua Wang and Chunping Jiang: Journal of Disaster Prevention and Mitigation Engineering Vol. 25 (2005), p. 359(In Chinese) [9] Linong Xia, Yundong Miao and Xiaoping Liu: Rock and Soil Mechanics Vol. 30 supp.2 (2009), p. 319(In Chinese)

Murch2,a 1Retired from: Institut für Materialphysik, Universität Münster, Germany Now: Berghof 3, 73635 Obersteinenberg, Germany 2Centre for Mass and Thermal Transport in Engineering Materials, School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW 2308, Australia agraeme.murch@newcastle.edu.au Abstract.
Myssore Dayananda Professor Mysore Dayananda is professor emeritus of Materials Engineering of the Purdue University in West Lafayette, Indiana, USA.
Yongho Sohn Professor Yongho Sohn is professor in the Department of Materials Science and Engineering at the University of Central Florida, Orlando, USA.
He is now Professor Emeritus in the Department of Mechanical Engineering and Materials Science of the Duke University at Durham, USA, Teh Yu Tan conducted fundamental research in materials science and processes related to electronic materials.
Paul Shewmon (born 1930) was professor in the Department of Materials Science and Engineering at the Ohio State University.

Performance of Salak (Salacca zalacca) Seed Extract to Green Corrosion Inhibitor on AISI 1040 Steel Muhammad Rifani1,a, Daffa Irsyad D.2,b, Ade Wahyu Yusariarta3,c, Jatmoko Awali4,d, Fredy Kurniawan5,e, Masato Tominaga6,f, Yusairie Mohd7,g, Yunita Triana8,h* 1,2,3,4,8Department of Material and Metallurgical Engineering, Institut Teknologi Kalimantan, Balikpapan 76127, Indonesia 5Department of Chemistry, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia 6Department of Chemistry and Applied Chemistry, Graduate School of Science and Engineering, Saga University, 840-8502 7Faculty of Applied Science, Universiti Teknologi MARA, Shah Alam, Selangor 40450, Malaysia a06191042@student.itk.ac.id, b06191017@student.itk.ac.id, cadewahyu27@lecturer.itk.ac.id, djatmoko.awali@lecturer.itk.ac.id, efredy@chem.its.ac.id, fmasato@cc.saga-u.ac.jp, gyusairie@uitm.edu.my, hnita@lecturer.itk.ac.id Keywords: AISI, Corrosion, Green, Inhibitor, Salacca zalacca, Seed Abstract.
These compounds have been widely studied and can be used as materials to inhibit the process of corrosion [28], [29].
Experimental Materials The metal specimen used in this study was AISI 1040 steel.
S., Elboujdaini, M., Heimann, Oxide Scale Behavior in High Temperature Metal Processing Corrosion and Corrosion Control Corrosion Handbook - Corrosive Agents and Their Interaction with Materials Corrosion Inspection and Monitoring Corrosion Prevention and Protection Plasma Spray Coati. 2012
Zhang, “Organic Compounds as Corrosion Inhibitors for Carbon Steel in HCl Solution: A Comprehensive Review,” Materials (Basel)., vol. 15, no. 6, pp. 1–59, 2022, doi: 10.3390/ma15062023.

Biomimetic Design and Manufacturing of Anti-Erosion Functional Surfaces Inspired from Desert Scorpion Zhiwu Han1, a, Mingkang Yang1, b, Wei Yin2, c, Junqiu Zhang1, d * 1Key Laboratory of Bionics Engineering of Ministry of Education, Jilin University, Changchun 130022, China 2State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China aemail: zwhan@jlu.edu.cn, bemail: yangmk14@mails.jlu.edu.cn, cemail: yinwei@mail.tsinghua.edu.cn, demail: junqiuzhang@jlu.edu.cn Keywords: desert scorpion, anti–erosion, biomimetic surfaces design and manufacturing, simulation, bionic centrifugal fan blades Abstract: Sand erosion is a phenomenon that solid particles impinging to a wall cause serious mechanical damages to its surface.
It has been recognized as a serious problem in various engineering applications, including helicopter rotor blades, impeller blades, aircraft engine blades, missile components, etc.
Hence, researchers in material erosion, including composites[4-6], surface hardening[7,8], material modification[9,10] and other fields[11] are trying their best to solve the concerning issue from the viewpoint of saving materials, reducing energy consumption and prolonging the material life.
Although these methods improved the wear resistance of materials to some extent, unnegligiblely, it always results in cost increasing.
Finally, we installed the sample blades in the centrifugal fan and explored their performance. 2 Materials and Methods 2.1 Animals and morphological observation Adult specimens of the desert scorpion A. australis and the Asia rainforest scorpion H. spinifer, were purchased from pet suppliers.

., Zhengzhou 450000 China 2 School of civil engineering Zhengzhou University, Zhengzhou 450001, China alifeng20030109@163.com, bguoyc@zzu.edu.cn, cshigang@zzu.edu.cn, dqianhui@zzu.edu.cn Key words: foundation pit; excavation; soil nail; axial force; time-dependent characteristic Abstract.
It can be noted that the predicted value is larger than back-analyzed one with a relative error permissible in engineering, which can meet the engineering requirement.
Hence, the formula given in the paper can be used in engineering design to predict soil nail axial force.
The nonlinear time-varying mechanics analyses of three-dimensional excavation in the underground engineering.
China civil engineering journal Vol.40(11)(2007), p.78-85 (in Chinese) [3] Fengwu Lv.

6-O-(10-undecylenoyl)-D-Glucose: Controlled Enzymatic Synthesis and Structure Elucidation by 1H and 13C NMR Yinzhen Wang 1, Qunliang Li1,a, Wu Yue 1,2 , Pingjia Yao 2,b, Yuanan Wei2, c 1 College of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P.
China 2 Guangxi Key Lab for Subtropical Bio-Resource Conservation and Utilization, Guangxi University, Nanning 530004, P.
Introduction Fatty acid esters of sugar have been used widely in food, cosmetic, detergent, and pharmaceutical industries due to their non-toxic, completely biodegradable characteristics, as well as the fact that sugar is an inexpensive and renewable raw material [1-2].
Materials and methods Candia antarctia lipase enzyme was purchased from Novo Nordisk Inc.

A study on objective functions for springback control in multi-objective optimization of sheet metal forming process Yang Xiang-an1,2,a Ruan Feng1,b 1 School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou, Guangdong, China 2 Key Laboratory of Numerical Control Technology of Guangdong Higher Education Institutes, Guangdong Polytechnic Normal University, Guangzhou, Guangdong, China a wodeyouxiang2008@126.com, b mefruan@scut.edu.cn Keywords: springback; objective function; multi-objective optimization; sheet metal forming Abstract.
Wide application of advanced high strength steels and light alloys which aims to reduce stamped part weight makes springback more severe for its particular material properties [1, 2].
The blank was modeled with LS-DYNA material 36, a 3-parameters Barlet model.
The material properties were representative of aluminium alloy, AA6111.

Removal of Zinc ions from aqueous solutions by Micro-electrolysis and Iron Hydroxide Self-flocculation Tianguo Li1, a, XiaoJun Xu1, b, Shuli Liu1, c, Rui Nie1, d Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China a550788873@qq.com, bxuxiaojun88@sina.com, c1203293826 @qq.com, d552943524@qq.com Key words: Zinc, Smelting wastewater, Removal, Micro-electrolysis, Self-flocculation Abstract: This study was performed to determine the feasibility of enhancing removal of zinc ions from aqueous solutions using an iron-carbon internal micro-electrolysis (ICIME) followed by iron hydroxide self-flocculation (IHSF) process.
Reverse osmosis, adsorption, ion-exchange can effectively reduce metal ions, but their uses were limited due to high material, operational cost and so on [9,10,11].
Table 1 Characteristic of water quality（mg/L） Properties H2SO4 Pb Zn Total Fe As F Cu Cd Concentration 5% 94.61 147 400 39.59 242.7 3.86 0.46 Materials and methods All the reagents used were of AR grade.

Olinto Meireles, 65 - 30.640-010 - Belo Horizonte - MG - Brazil 2Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais, R.
Experimental Method A C-Mn steel with chemical composition as follows: 0.20C, 1.44Mn, 0.24Si, 0,12Cr, all numbers in wt%, was used as experimental material in this research.
Use of this model was important in the design of hot torsion laboratory experiments capable of reproducing some key features of the industry process.