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Materials and Methods In the present study, we used bentonite sodic clays of national origin, Industrializas Bentongel, manufacturer Bentonisa, and Brasgel PA manufacturer Bentonit União Nordeste, both being from the city of Boa Vista-PB.
The surfactants used in the organophilic synthesis process were ionic surfactant Praepagem ® WB (distearyl dimethyl ammonium chloride), with 75% of the active material derived from the company CLARIANT located in Sao Paulo, SP.
This classification proves what was predicted by Fagundes (2009), when he stated that for geological materials the class L and C are often used.
Similar to the results obtained for the Bentongel clay, as expected because it is a geological material, Brasgel clay isotherms are classified as type L and C.
[8] GILES, C.H.; SMITH, D.Y.; HUITSON, Theoretical Journal of Colloid and Interface Science, 47(3):755-765, 1974

The synthesis of semiconductor devises of the last generation is somehow based on the application of high-alloy materials and corresponding technologies [1].
The latter fact makes it possible to significantly diminish the considered inhomogeneities of the barrier in the contact when using semiconductor materials with dielectric permeability .
Acknowledgements This work was performed under the government order of the Ministry of Education and Science of RF project # 11.5861.2017.
Electronic processes in non-crystalline materials.
Journal of Surface Investigation, 4(5), 859-861 (2010). doi:10.1134/S1027451010050290 [19] M.V.

However, the very low surface energy of PTFE usually prevents a reliable and stable homogenization of both materials in the dispersion as well as in the final film.
Materials PAI Torlon 4000 T (Solvay), PTFE TF 2025 (Dyneon/3M), NMP EMPLURA® (Merck), Aerosil® R 972 (Evonik), Xylane© 1070 (Whitford) Methods Transmission light microscopy.
Scheler, Modification of perfluorinated polymers by high-energy irradiation, Journal of Fluorine Chemistry 125 (2004) 863-873
Lehmann, Influence of Absorbing Materials on the Funtionalization of Poly(tetrafluoroethylene) During g-Irradiation, J. of Applied Polymer Science 130 (2013) 1787-1793

Introduction It is well known that the size of crack tip plastic zone is a factor of fundamental importance in the fracture behavior of metallic materials.
However in metallic materials, the crack propagation need more energy than that consumed by new formed free surfaces [3], which implies that there is always a region around the crack tip where plastic deformation occurs, inferring that the stress singularity does not in fact exist.
Second, the effect of material yielding is omitted on the value of KI.
Orowan E, “Energy criteria of fracture,” Welding Journal. 1955;34:157-160
Yu MH, “Advances in strength theories for materials under complex stress state in the 20th century,” J.

Cast material properties were assigned from ProCastTM database.
Material properties were obtained from ProCastTM database.
Karimi-Sibaki, Heat Transfer Coefficient at Cast-Mold Interface During Centrifugal Casting: Calculation of Air Gap, Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science. 49 (2018) 1421–1433. https://doi.org/10.1007/s11663-018-1220-0
[16] American Society for Metals, ASM Handbook Volume 02 - Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM International, Ohio, 1990
Stefanescu, Science and engineering of casting solidification, Springer, 2015.

Only the interaction of these two different materials generates the properties required in lightweight designs, such as high stiffness and strength, compared to unreinforced plastics [1].
Polypropylene is very suitable as a matrix material because of its low density, chemical resistance and low material costs.
Experimental Materials.
DiBenedetto, Materials Science and Engineering A 302 (2001) 74-80
Plueddemann, Journal of Adhesion Science and Technology 5 (1991) 261-277.

Influence of Welding Sequence on Residual Stress and Distortion in Rectangular Welding of 6061 Aluminum Alloy Yi Jie1, 2, 3, a, Li Can3 and Zhonggang Sun1 1Hunan Industry Polytechnic 2State Key Laboratory Of Advanced Design And Manufacturing Vehicle Body 3College of Materials and Engineering of Hunan University aemail:ejay2011@sina.com Key words: Aluminum alloy; Finite element; Welding sequence; Welding distortion Abstract: This paper presented a detailed finite element simulation on the basis of elastic-plastic method combined with thermo-mechannical coupling algorithm，and the software abaqus was used for the welding simulation of thin-walled 6061-T6 aluminum.
The simulation of deformation using thermal elastic plastic finite element method ,which takes account of many material nonlinear factors, makes results more directly and easy to facilitate comparison analysis.
Aluminum ang aluminum welding guide[M].Changsha：Hunan Science and Technology Press，2004, 56-61
International Journal of Pressuer Vessels and Piping, 2008, 85:265-274
Modeling and Simulation in Materials Science and Engineering, 2005, 13:553-565

The latest editions of Building construction Materials and Methods textbooks have added sections on sustainable practices.
Construction management, materials, transportation, and structures disciplines would be of more impact in the economic dimension than geotechnical.
Table 1: Traditional content in some building construction and construction management tracks courses within CVE Traditional Courses Traditional Content Building Construction Materials and Methods Covers traditional and alternative building systems, the principals, materials, methods, codes and standards, and discusses their advantages and limitations.
Journal of Professional Issues in Engineering Education and Practice. 133(3):188-191. 9.
Journal of Professional Issues in Engineering Education and practice. 127(3): 104-108. 11.

Sludge from WWTP facilities mostly disposed of as soil amendment, or by open drying contain toxic materials and heavy metals which easily ionize in soil, and hence plants' roots absorb these toxic materials, metals and bioaccumulate in the tissues of the plant [6].
Due to its adsorptive properties, biochar could be used to purify, detoxify, and filter the concentration of many liquids and gaseous materials.
Modification by carbonaceous materials increases biochar surface area.
Materials like carbon nanotubes and graphene effectively adsorb heavy metals and organic pollutants [51].
Biochar surface area can also be modified with carbonaceous materials. 8.

Materials and Methods Plants The test materials were picked on Huping Mountain, Shimenn County, Changde City of Hunan province in July 2013.
The seedlings of cultivation was in XiangTan Research Institute of Forestry Science until before the test.
[3] Wang.W.L,The response of plants to water stress[J].plant physiology communic- ation science,1981(5):55-64
[5] Ma.J,Liu.G.L,Jie.F.F,ect.Effect of Water Stress on Growth and Physiological Characteristics of Sedum spectabile, China Agricultural Science Bulletin, 2011, 27
Zhejiang Journal of Agricultural Sciences in plant resistance to 2006,25 (18): 12-17.