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The singularity may result in anomalous amount of energy release or material accumulation within a narrow spatial-temporal interval.
A high gravity value indicates the presence of geological objects with higher average density than the materials surrounding them.
Earth Science-Journal of China University of Geosciences, 34(2):232-242(in Chinese with English abstract)
Li, et al., “Study on ore-forming fluids of the Guilaizhuang gold deposits in Pingyi, Western Shangdong,” Journal Mineral Petrol, 29(1):38-44, 2005(in Chinese)

Introduction Mechanical alloying (MA) technique is a powerful method for the elaboration of powdered nanostructured materials.
In the case of nanostructured ferromagnetic materials, if the cristallite size decreases down to the nanometric scale a change in the magnetic properties is frequently observed, which has been well explained by the random anisotropy model (RAM) [3, 4].
Shameli, Nanostructured soft magnetic materials synthesized via mechanical alloying: a review, J Mater Sci: Mater Electron, Journal of Materials Science: Materials in Electronics, 29(2), (2017) 1690–1717
Herzer, Nanocrystalline soft magnetic materials, J.
Graham, Introduction to Magnetic Materials, John Wiley and Sons, Inc., Hoboken, New Jersey, 2009

Formation of Microstructure during Sub-Zero Treatments of Chromium and Chromium-Vanadium Ledeburitic Steels JURČI Peter Faculty of Material Sciences and Technology of the STU in Trnava, J.
Thus, the sub-zero treatment transformed from the "black-art" to the accepted topic of science.
In addition, Gavriljuk et al. [7] used powder metallurgy steel while conventional cast and wrought materials were used in other cited works.
Pendray, Cryoprocessing of Materials: A Review of Current Status, Mater.
Trnava: Faculty of Materials and Technology, Trnava, 2015

While studies of eggshell concrete or rubberized concrete are present, it is a new approach to replace both cement and sand with waste materials.
Many researches also attempted to derive a more accurate expression especially when replacement materials were involved [41-42].
(Sciences Eng., 62 (2013) 95–101
Strukar, Recycled rubber as an aggregate replacement in self-compacting concrete-literature overview, Materials (Basel)., 11 (2018)
Rashad, A comprehensive overview about recycling rubber as fine aggregate replacement in traditional cementitious materials, Int.

Silva1,a*,Tae jo Kim1 and Tong Yuan Koo3 1Department of Food Science, Nutrition and Health Promotion, Mississippi State University, Mississippi State, MS 39762, USA. 2 Department of Business Administration, TransWorld University, Touliu 640, Taiwan, ROC 3 Department of Industrial Engineering and Management, National Yunlin University of Science and Technology, Touliu 640, Taiwan, ROC a*jsilva@foodscience.msstate.edu, b*shin@twu.edu.tw Keywords: Enzyme Utilization, Food Industries, Response Surface Methodology, Catfish Nuggets Abstract.
Materials and Methods Materials.
Acknowledgment Approved for publication as Journal Article No.
Enzymic processing of marine raw materials.

By means of test data, CHEOL et al built up the intelligent models of material removal rate, surface roughness, grinding residual stress and so on for the grinding of cylindrical insert type [3].
Grinding Experiment Conditions of Spiral Bevel Gears Gear Material and Machining Process Here 20CrMnTi of spiral bevel gears was commonly selected in automobile gear material.
This showed that grinding temperature in this area already achieved ACcm of material or overtaked AC3.
Acknowledgements This project is supported by National Natural Science Foundation of China (Grant No. 51375161 and 51375160) , and Hunan Provincial Natural Science Foundation of China (Grant No. 13JJ6064).
International Journal of Refractory Metals & Hard Materials,2008,26:84-90

Each of the process requires inputs such as energy and raw materials, and outputs such as products and emissions.
However, such methodology may not be applicable for Philippine scenario due to its unique raw material supply-chain and its environmental constraints.
Witt, Evaluating and improving environmental performance of HC’s recovery system: A case study of distillation unit, Chemical Engineering Journal, 140, (2008), 201-213
Transactions of the National Academy of Science and Technology 33(2): (2012) 177-178.
Transactions of the National Academy of Science and Technology 30: (2008) 289-295.

Every violation of optimal production technology causes irreversible changes in the material that are visible on the fracture after breaking.
Material degradation of engineering components can occur when any of production technologies is applied.
The using of scanning electron microscopy (SEM), allowing simple and operational evaluation of micromorphology of fracture surfaces, brought huge development to the fractography science.
The flakes are occurring by acting of hydrogen content and high internal stress due to cooling of a material to the relative low temperatures.
Pietikeinen, Observations about tempered martensite embrittlement, Scandinavien journal of Metalurgy, 34, 2005, 1

Puchkov, Materials Science Forum Vols. 467-470 (2004) pp 323-328 [5] P.
XL, 2002, pp. 1105-1116 [6] Marmulev A.V., Herman G., Poliak E.I., Kaputkina L.M., Proceeding of International Conference Materials Science and Technology (MS&T) 2011, 2011, October 16-20, Columbus, Ohio, USA, p. 470 – 476 [7] J.K.
Wilshire, Journal of Materials Processing Technology, V.120, (2002), pp. 316-321 [8] S.

Journal Citation (to be inserted by the publisher ) Copyright by Trans Tech Publications Effect of Surface Morphology and Crystal Structure on Bioactivity of Titania Films Formed on Titanium Metal via Anodic Oxidation in Sulfuric Acid Solution Tian-Ying Xiong 1 , Xin-Yu Cui 1,2 , Hyun-Min Kim 3 , Masakazu Kawashita2 , Tadashi Kokubo4 , Jie Wu1 , Hua-Zi Jin1 and Takashi Nakamura5 1 Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang, 110016, P.R.
China tyxiong@imr.ac.cn 2 Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan 3 Department of Ceramic Engineering, School of Advanced Materials Engineering, Yonsei University 134 Shinchon-dong, Seodaemun-gu, Seoul 120-749, Korea 4 Research Institute for Science and Technology, Chubu University, 1200 Matsumoto-cho, Kasugai-shi, Aichi 487-8501, Japan 5 Department of Orthopaedic Surgery, Graduate School of Medicine, Kyoto University, Sakyo-ku, Kyoto 606-8507, Japan Keywords: titanium metal, anodic oxidation, sulfuric acid solution, apatite, simulated body fluid Abstract.
They are called bioactive ceramics, and have been used as important bone repairing materials.
An essential requirement for an artificial material to bond to living bone is the formation of a bonelike apatite layer on its surface in a body environment.