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Online since: October 2010
Authors: Chiara Tardini, Maurizio Piazza, Mariapaola Riggio, Maria Adelaide Parisi
The new elements, produced with different materials and technology and having generally higher mass and stiffness, enhanced the weakness of the masonry to which they were connected.
The timber roof trusses of the Loggia dei Cannoni (cannons loggia), in particular, were to be subjected to a very precise study of the geometry, of the characteristics of materials, of the details and state of conservation of the joints.
Data regarding geometry, details, materials, and state of conservation are collected by filling a form.
, corresponding to a C rating. 21.1.1 Rafter l r circular rectangular x x other: Dimensions (bxh) cm: 20x23 25x21 Decay: 21.1.3 Tie-beam circular rectangular x other: Dimensions (bxh) cm: 30x21 Decay: 21.1.4 Post n° 1 circular rectangular x other: Dimensions (bxh)cm: 29x37 Decay: from insects 21.1 TRUSS n° 1 - MEMBER ANALYSIS Section Section local from insects, local from mushrooms at the tie-beam right joint extended insect attack in the sapwood Section l r birdsmouth joint x x double step joint reverse birdsmouth joint Skew angle: ~ 30° Decay: Other: l r Half depth x Dovetail Other: tenon and mortice x Decay: Open joint tenon and mortice x stirrup bolted joint Other: Decay: 21.2 TRUSS n° 1 - JOINT ANALYSIS 21.2.1Rafter - Tie beam notch depth: 21.2.3 Post - Tiebeam Restrained double tie-beam fixed 21.2.2 Tie-beam - Wall plate (left) tenon and mortice Metal connectors: laterally restrained within a double tie-beam timber keys
"Seismic vulnerability indicators for timber roof structures," in Proc. of the joint 9 th US National and 10th Canadian Conference of Earthquake Engineering, Toronto, July 25-29, 2010
Online since: November 2012
Authors: Yue Hua Li, Hao Deng, Suo Lei Zhang, Yu Long Liu
The Adsorption and Desorption Characteristics of a Novel Sorbent in Groundwater Remediation: Modified Oil Sludge Yuehua Li1,2, Yulong Liu*1,a, Hao Deng1, Suolei Zhang1 1 Research Institute of Safety & Environment Technology, China National Petroleum Corporation, Beijing, 100083,China 2Beijing Key Laboratory of Water Resources and Environmental Engineering, China University of Geosciences (Beijing), Beijing, 100083,China a liuyulong98@yahoo.com.cn Keywords: Modified oil sludge (MOS); Methyl tert-butyl ether (MTBE); Benzene; Trichloroethylene (TCE); Adsorption; Desorption.
Materials and Methods MOS making procedure.
The adsorption process of MTBE, TCE and benzene by MOS is also very complicated, and the mechanism of this adsorption maybe mainly due to the adsorption of the organic materials in MOS.
Basis on the results, follow conclusions are obtained: (i) the adsorption removal rate of TCE and benzene was more than 99%, but it was lower for MTBE (but still >93%); (ii) Freundlich model is used to stimulate the adsorption of MTBE, TCE and benzene, and the adsorption mechanism is the adsorption of the organic materials in MOS; (iii) the desorption quantity of TCE and benzene was lower (0.4% and 1%, respectively), but it was larger for MTBE (about 10%); (iv) for groundwater remediation, it is an efficient and economic way to reutilize MOS as an absorbent in adsorption technology.
Online since: January 2019
Authors: Xiao Ze Jiang, Dan Yue Wang, Jia Ming Xu, Han Tong, Mei Fang Zhu
Preparation and Characterization of pH Responsive Complex Micelles with Dynamic Boronate Cross-Linking Jiaming Xua, Danyue Wangb, Han Tongc, Xiaoze Jiangd* and Meifang Zhue College of Materials Science and Engineering, State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China a18021054459@163.com, bwang.danyue@163.com, c15000768276@163.com d*xiaozejiang@dhu.edu.cn, ezhumf@dhu.edu.cn Keywords: pH responsive, complex micelles, boronate, dynamic covalent cross-linking Abstract.
Experimental Section Materials.
Online since: July 2020
Authors: Darminto Darminto, Bambang Triono, Putu Eka Dharma Putra, Resky Irfanita, Malik Anjelh Baqiya
Coexistence of Weak Ferromagnetism and Paramagnetism in T’-Pr2-xCexCuO4+α-δ Nanoparticles Putu Eka Dharma Putra1,a, Resky Irfanita1,2, Bambang Triono1, Malik Anjelh Baqiya1,b*, Darminto1,3,c 1Advanced Materials Research Group, Department of Physics, Institut Teknologi Sepuluh Nopember (ITS), ITS Campus, Keputih Sukolilo, Surabaya 60111, Indonesia 2Material Physics Laboratory, Department of Physics, Faculty of Mathematics and Natural Science, Universitas Negeri Makassar, Jalan Daeng Tata Raya, Makassar 90223, Indonesia 3Center of Excellence in Automotive Control and System, Institut Teknologi Sepuluh Nopember (ITS), ITS Campus, Keputih, Sukolilo, Surabaya 60111, Indonesia aputu16@mhs.physics.its.ac.id, b*malikabits@physics.its.ac.id, cdarminto@physics.its.ac.id Keywords: Ferromagnetism, nanoparticles, oxygen vacancy, paramagnetism, PCCO Abstract.
Experimental The nanoparticles of T'-PCCO with x = 0, and 0.10 were synthesized from raw materials Pr6O11 (99.9%), CeO2 (99.9%), and CuO (99%) using the chemically dissolved method followed by HNO3 as a dissolving agent according to Ref. [4].
The lattice parameter and crystal size were estimated by Rietveld analysis using materials analysis using diffraction (MAUD) software [8].
This signifies the key role of the defect density modification in enhancing magnetization as reported in Ref. [5].
Yi, Enhanced ferromagnetism in WS 2 via defect engineering,J.Alloys Compd. 772 (2019) 740–744. doi:10.1016/j.jallcom.2018.09.088.
Online since: May 2015
Authors: Koichi Nakamura
Electronic State and Piezoresistivity Analysis of Zinc Oxide Nanowires for Force Sensing Devices Koichi Nakamura1,2,a 1Center for the Promotion of Interdisciplinary Education and Research, Kyoto University, Kyoto 615-8540, Japan 2Department of Materials Science and Engineering, Egypt-Japan University of Science and Technology, New Borg El-Arab, Alexandria 21934, Egypt akoichi@cpier.kyoto-u.ac.jp Keywords: Piezoresistivity; Zinc oxide; Nanowire; First-principles calculation; Strain gauge factor; Force sensor Abstract.
Introduction Investigation of novel high-sensitivity piezoresistive materials is indispensable for extending the usability and operability of future force sensing nano-electro-mechanical-system (NEMS) devices [1].
These devices can operate with the Schottky barriers, and in addition, the detailed prediction of electromechanical properties of ZnO itself at the nanoscale level is quite valuable for the application of ZnO to NEMS sensing devices, because these properties in a low-dimensional material are considered to be remarkably different from those in the same material at the microscale level.
Abd El-Moneim: Key Eng.
Online since: May 2013
Authors: Akio Kagawa, Aiko Motoishi, Yutaka Tagawa, Makoto Matsuzaki, Masataka Yamamoto, Kunihiko Tanaka
Mechanism of Cancer Cell Death Induced by Hydrogen Discharged from Palladium Base Hydrogen Storage Alloy Makoto Matsuzaki1,b, Akio Kagawa2,a, Aiko Motoishi1,c, Kunihiko Tanaka3,d, Masataka Yamamoto2,e and Yutaka Tagawa3,f 1 Graduate school, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan. 2 Division of Chemistry and Materials Science, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan. 3 School of Medicine, Nagasaki university, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan.
%Ni alloy (denoted HSA hereafter) was prepared by arc-melting using pure materials (palladium > 99.9 wt% and nickel > 99.9 wt%) under argon gas atmosphere.
Kagawa : Key Engineering Materials Vol.457 (2011), p.447 Fig.3 ESR spectra for medium solution after 24h immersion of H+ HSA.
Online since: January 2010
Authors: Renat M. Imayev, V.M. Imayev, Fritz Appel, Michael Oehring, Jonathan H.D. Paul, Uwe Lorenz
Lorenz1,f 1 GKSS Research Centre, Institute of Materials Research, Max-Planck-Str. 1, D-21502 Geesthacht, Germany 2 Inst. for Metals Superplasticity Problems, Russian Academy of Sciences, Khalturin Str. 39, 450001 Ufa, Russian Federation a michael.oehring@gkss.de, bfritz.appel@gkss.de, cjonathan.paul@gkss.de, d Renat_Imayev@mail.ru, evimayev@mail.ru, fuwe.Lorenz@gkss.de Keywords: Gamma TiAl alloys, solidification, β/α transformation, grain refinement through B.
According to the binary phase diagram [5], solidification of engineering γ titanium aluminide alloys occurs via the β and/or the peritectic α phase.
The investigated materials included binary as well as multicomponent alloys, which contained Al concentrations in the range 42 - 47 Al, varying Nb (5 - 8 at.%), B (0.1 - 0.2 at.%) and other alloying additions (Mo, W, Fe, C).
This material was then subjected to a second heat treatment in the β phase field at 1450 °C followed by air cooling or by furnace cooling with an initial rate of 1 K/s.
Conclusions Our experimental observations strongly indicate that the β/α transformation is the key factor to understand grain refinement in β solidifying alloys.
Online since: July 2012
Authors: He Jian Xiong, Longfei Cao, Huajun You, Qingpi Yan, Ying Ma
The proteolysis retains nutrition content in raw materials, and the proteins are broken down into peptides of varying chain lengths and free L-aminoacids, which are soluble in water, easily digested and better than the original flavor [9].
Materials and methods Material.
Table 1 Chemical composition of Tilapia frames Analysis [%, wet basis] Content Moisture 60.12±1.94 Fat 22.40±0.59 Proteins 13.10±0.24 Ash 1.27±0.12 For the enzymatic hydrolysis, the commercial proteases, Flavouzryme and Papain, were purchased from Novozymes (China) Biotechnology Co., Ltd. and Nanning Pangbo Biological Engineering Co., Ltd. respectively.
Determination of total amino acid in raw material: Sample was placed in a hydrolysis tube and was hydrolyzed with 6 M HCL at 110 °C for 12 h.
Acknowledgements This work was financially supported by the key Science and Technology Program of Fujian Province of China (2009I0019, 2009N0045); the Foundation for Innovative Research Team (2010A003) and the PAN Jin-long Scientific Research Foundation (ZC2010017) of Jimei University of China.
Online since: June 2011
Authors: Pavel A. Korzhavyi, Inna Soroka, Mats Boman, Börje Johansson
Thermodynamics of Stable and Metastable Cu-O-H Compounds Pavel Korzhavyi1,a, Inna Soroka2,b, Mats Boman2,c and Börje Johansson1,3,d 1Applied Materials Physics, Department of Materials Science and Engineering, Royal Institute of Technology, SE-100 44 Stockholm, Sweden. 2Department of Materials Chemistry, Uppsala University, Box 538, SE-751 21 Uppsala, Sweden. 3Materials Theory, Department of Physics and Astronomy, Box 516, SE-751 20 Uppsala, Sweden.
apavel@mse.kth.se, binna.soroka@mkem.uu.se, cmats.boman@mkem.uu.se, dborje.johansson@fysik.uu.se Key words: copper hydride, copper hydroxide, structural properties, thermodynamic properties.
Online since: January 2015
Authors: Xin Liu, You Ji Tao, Jun Wang, Yan Fen Guo, Gan Xin Jie, Xiao Dong Zhang, Li Fen Hu
Introduction Polystyrene (PS) has been widely used as an engineering plastics due to its high strength properties combined with long durability, translucency and easy manufacture [1,2].
Only data of the second stage were recorded and used for further analysis because the aim of first stage was to eliminate heat history of the material.
Similar result could be seen in J.F.Larche’s[13]and Quanlin Zhao’s[14] research that different properties of different materials could be used to characterize the weathering behavior or evaluated the correlation between two different weathering environments.
Moreover, for different materials different weathering devices and conditions should be used for artificial accelerated simulation or service lifetime prediction.
Material 2013 [12] Weihong Wang, Fanhua Bu, Zhengming Zhang, et al.
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