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Introduction Acrylic resins are materials used in dentistry as denture materials, removable denture bases, and also prosthesis repair [1].
References [1] Hatrick CD and Eakle WS 2016 Dental materials: Clinical applications for dental assistants and dental hygienists 3rd ed St.
Iasi. 111(2) 477-81 [14] Istiqlal N 2015 Pengaruh seduhan kopi arabika gayo terhadap kekasaran permukaan basis gigi tiruan resin akrilik heat cured Banda Aceh: Fakultas Kedokteran Gigi Unsyiah ix, 30 [15] Gupta G and Gupta T 2011 Evaluation of the effect of various beverages and food material on the color stability of provisional materials – An in vitro study J. 
Dent. 2 193-6 [20] Young BC 2010 A comparison of polymeric denture base materials [Master's thesis].
Scotland: University of Glasgow 101, 103 [21] Anusavice KJ, Shen C and Rawls HR 2013 Phillps' science of dental materials 12th ed St.

Several empirical interaction potentials have been proposed to describe semiconductors from elemental materials to III-V and II-VI compounds in the last 40 decades.
Even when just two-body potentials are used, what is usually suitable to describe properties of several elemental materials, they intrinsically contain may-body effects.
We use molecular dynamics simulations with the proposed potentials to describe structural and dynamical properties of these materials.
Vashishta, Journal of Chemical Physics Vol. 121, (2004) p. 4323
Jamieson, Science Vol. 139, (1963) p. 845

Materials and Methods Collection and preparation of GLE and CSP Guava leaves and coconut shells were obtained from Federal University of Technology, Owerri Farm and identified by a Botanist in the Department of Biology, Federal University of Technology Owerri (FUTO).
The mechanical behaviours of PMMA have been reported to be brittle as a thermoplastic materials, but the reinforcement using 5 - 50wt% of CSP as an additive make it hard and tough with increased mechanical properties [51, 52].
Buketova, Development of epoxy-polyester nanocomposite materials with improved physical and mechanical properties for increasing transport vehicle reliability.
Rezaei, An experimental investigation of HA/AL2O3 nanoparticles on mechanical properties of restoration materials.
Chen, Dynamic mechanical behaviour of polymer materials, in: Aspects of Polyurethanes, InTech Open, 2017, pp. 193 – 212.

Material behaviour, loading and boundary conditions.
Material properties were derived from the data available in the literature.
Ligaments were modelled as non-linear hyperelastic fibered materials, and the mechanical properties were obtained from previous works [25, 26, 27].
Acknowledgements This paper has been supported by NNSFC funds (National Natural Science Foundation of China), Grant number 50975013.
Lai, An analysis of the unconfined compression of articular cartilage, Journal of Biomechanical Engineering, 106 (1984) 165-173

Materials and Methods Materials The tools used in this research are mortar, pestle, oven, plastic wrap, 200 mesh sieve, furnace, porcelain crucible, scales, beaker, magnetic stirrer, pH meter.
PLOS ONE, vol. 11, no. 4, p. e0152783, Apr. 2016, doi: 10.1371/journal.pone.0152783
Praserthdam, “The Characteristics of Green Calcium Oxide Derived from Aquatic Materials,” Procedia Chem., vol. 9, pp. 53–61, 2014, doi: 10.1016/j.proche.2014.05.007
Oyedotun, “X-ray fluorescence (XRF) in the investigation of the composition of earth materials: a review and an overview,” Geol.
Gheorghe, “Calcium carbonate as silver carrier in composite materials obtained in green seaweed extract with topical applications,” J.

Nano-sized particle addition [1,2], heavy-ion irradiation [3,4] , post annealing [5], and element doping at different sites of (Bi1.6Pb0.4)Sr2Ca2Cu3O10 ((Bi,Pb)-2223) [6] or in YBCO have been reported to improve the superconducting properties of these materials.
The dried powders were calcined at 730 ºC for 12 h to remove the volatile materials.
Journal of Materials Science 35(9) (2000) 2325-2329 [9] R.

This research utilized polydimethylsiloxane (PDMS) as LoC material since it has been an eminent material for drug testing [17,18].
Material and methods Mold preparation Copper is prepared into two rectangular blocks with area of 5 x 4.5 cm2 and 4 mm thickness as top and bottom compartment.
Before the test conducted, LoC is assembled with additional material between bottom and top compartments: Advantec membrane filter 0.45 μm.
PDMS Surface Modification Using Biomachining Method for Biomedical Application, Journal of Biomimetics, Biomaterials and Biomedical Eng. 26 (2016) 66-72 [22] Katragkou, Aspasia, et al., In vitro interactions between farnesol and fluconazole, amphotericin B or micafungin against Candida albicans biofilms, J.
[23] Suwandi, Dedi, Yudan Whulanza, and Jos Istiyanto, Visible Light Maskless Photolithography for Biomachining Application, Applied Mech. and Materials 493 (2014) 552-557

Electronic structure and doping effect of Ni and Co in the kink on the edge dislocation of bcc iron Li-qun Chen a and Zheng-chen Qiub College of Sciences, Central South University of Forestry & Technology, Changsha 410004, China aldclqun@163.com, bclqun123@sohu.com Keywords: Electronic structure, doping effect, alloy element, dislocation, kink Abstract: Using the first-principles self-consistent discrete variational method based upon density functional theory, we investigated the energetics and the electronic structure of the 3d impurities Ni and Co in a kink on the [100](010) edge dislocation (ED) in bcc iron.
Dislocations are always present in most crystalline materials and influence a variety of properties, including mechanical, electric, optical and magnetic [2].
It is commonly accepted that the dislocation motion in materials having a high Peierls relief is accomplished by the nucleation and propagation of kinks along the dislocation line [2].
However, this very transparent but simplified concept is insufficient to describe the mechanical properties of real materials, where the impurity-kink interactions play a crucial role in kink dynamics.
Qiu, C.Y.Wang and T.Yu, "Electronic effect of boron impurity on the kink in bcc iron", Journal of Alloys and Compounds (2006), in press [11] D.

., it requires an accurate geometric shape and parameters with a low roughness of a machined surface, it requires machining of parts and materials to which only the process of grinding can be utilized, or the other processes are almost out of use (e.g., machining of hardened steels), as it demands machining of components for which the grinding process is the most efficient. [6] Advantages of hard turning Among main advantages of the technology mentions that a reduction of material is relatively high compared to grinding, heat emission is limited to the sphere of a point of a machine and thus a heat impact of a surface level of a work piece is reduced, the technology shows a high flexibility level especially while working of sectional rotation surfaces, it demonstrates a significant reduction of a work piece period and in continuous production period compared to grinding, limits, resp. elimination of cutting fluids which is beneficial to ecologization of production.
Acknowledgement The article was funded by the grant project VEGA 1/0773/12 - “Implementation of technical ceramic material research to increase the innovation of hybrid products”.
Applied Mechanics and Materials, pp. 284-291, (2014) [3] A.
Ceclan, “Calibration of 5 axis CNC machine tool with 3d quickset measurement system”, Academic Journal of Manufacturing Engineering, VOL. 12, ISSUE 1/2014, pp. 24-28, (2014) [8] N.
Cubonova: Postprocessing of CL Data in CAD/CAM System Edgecam using the constructor of Postprocessors, Manufacturing Technology : J. for Science, Research and Production, vol. 13, No. 2, pp.158-164, (2013) [9] J.

Material used in diamond beads manufacture may be of natural or synthetic origin.
The main difference between both is the addition of an abrasive material to the water to increase the cutting power of the water jet when using the abrasive water method. [9].
This methodology can treat, without reducing the productivity, rock of very thin thickness and particularly fragile materials, thus allowing to enlarge the market of applications of the technology that makes use of the water jet, both for cutting and for surface finishing [12].
While the water jet technique is used in quarries for cutting and extracting rock blocks "in situ", the abrasive material combined with water jet (Abrasive Water Jet) is used in the cutting and molding of decorative parts.
South African Journal of Science.