Materials Literature
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The drying of biological materials plays an important role in influencing energy savings, quality of end-products and also environmental issues.Several new approaches in application of solar dryers and a great number of biological materials have been developed.In the paper the background of solar drying, current solar…
Biobased materials are becoming of increasing interest as potential structural materials for the future. A useful concept in this context is the fibre reinforcement of materials by stiff and strong fibres. The bio-resources can contribute with cellulose fibres and (bio) polymers from hemicelluloses. This offers the po…
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The main objective of this paper is obtaining the optimal carburizing hours which impacts geometric tolerances, OPD(Over Pin Diameter), runout, hardness and fatigure strength of SCM415 spur gear. In order to observe the deformation of the gear, the circularity, squareness, OPD(Over Pin Diameter) and runout were measur…
The test site is located at Nordre Ringgade near the town called Dronninglund in the northern Jutland in Denmark. The site area is relatively flat, and was chosen because it has a size of approximately 3 ha and contains a relatively thick deposit of silty soils. Furthermore the groundwater was encountered at approxima…
Thermal decomposition of the polymeric hydrocarbons, including rubber and other kinds of plastics is examined. Thermal decomposition - pyrolysis of heavy polymeric com- pounds has a great contrast to the thermal degradation of light hydrocarbon compounds based on general laws. The temperature regime of the pyrolysis u…
The spinel Ni-Zn ferrites for a long time has been used in various electromagnetic applications and electronic devices, such as transformer cores, microwave absorbing materials and devices, inductors etc. Currently there is interest to make nanostructured Ni-Zn ferrite in order to increase resistivity and reduce energ…
The aim of the present paper was to evaluate the reactivity of two diatomites samples, representative of two distinct geological environments (Quiquel and Terao), localized in the Chilo e Island, southern Chile in the synthesis of the NaP-GIS zeolite. This zeolite crystallized with dierent morphologies from gels prepa…
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The effect of Euphorbia hirta leaf extract on the corrosion of aluminium in 0.5M HCl was investigated by using the gravimetric technique. It was shown that the presence of E. hirta leaf extract inhibited corrosion of aluminium in the test solutions and that the inhibition efficiency depended on the concentration of th…
The present paper describes the deposition of nanostruc- tured diamond films with low surface roughness, high hard- ness and fracture toughness by microwave PECVD in the ASTeX type reactor from mixture of methane and hydrogen. Films were deposited on a mirror polished (111) oriented n- doped silicon substrate. The fil…
In this paper we analyze an extremely large, one-layer slab consisting of magnetodielectric spheres. The theory of vector spherical harmonics and the vector additiontheorem with infinite array approximationswere used todetermine the sphere scattering coefficients, and subsequentlythe homogeneous
Natural fibers are the most common fibers available on earth in various forms such as plant fibers, animal fibers and mineral fibers. Plant fibers are the upcoming novel fibers used in omposites as a reinforcement material. Natural fibers have lot of potential in the materials field due to its immense advantage and it…
Simultaneous Composite Injection Molding (SCIM) is an important method for evaluating interfacial adhesion between two distinct polymers. SCIM was performed to combine Polyoxymethylene (POM) and Poly (lactic acid) (PLA). These two polymers are different in terms of chemical as well as crystalline structures but succes…
La soldadura por fricción (Friction Welding o FW) de dos piezas metálicas es un antiguo proceso que se consolidó industrialmente en los años 60 y que se conseguía combinando una semifusión por fricción controlada de los materiales a unir con la presión ejercida para consolidar la unión. Se practicaba la fricción girat…
This work aims to prepare a composite material based on epoxy resin reinforced by fiber and dust particle from low carbon steel with various volume fractions and so, studying their effect on tensile and flexural strength. Fibers from low carbon steel, with 0.20 mm in diameter and low carbon steel dust particles were u…
Both civil and mechanical engineers have to deal with loads of the force-controlled type (qualified as "primary") or of the displacement-controlled type (qualified as "secondary").Question about of which type is a seismic load has been discussed for decades by different authors with either civil or mechanical backgrou…
Organomodified clays are widely used in many applications, among others as sorption materials for nonpolar organic compounds from soils and aqueous media. Vermicullite is a clay that is still little utilized. Its structure is similar to smectites with layered structure and interlayer space filled with inorganic cation…
The studies of the mechanical action on molecular organic crystals include: a) fundamental research of the chemical interactions and of the mechanisms of dynamic and structural transitions in various molecular systems, and b) applied research with potential applications in such fields as pharmaceutical industry and th…
对4个无偶极矩的八极分子(1,3,5-triazine and 1,3,5-tricyano-benzene derivatives with the donor groups 4-N, N-diethylaminophenyl and 4-N, N-diethlaminophenylethynyl)的静态一阶超极化率β0 进行了理论计算。先在HF/D95V水平计算了一阶超极化率，比较好地重现了实验值的变化趋势。然后根据模型分子的计算，考察了电子相关效应和溶剂效应对分子非线性光学性质的影响。在假设电子相关效应和溶剂效应对相似体系的超极化率的影响幅度有相似性的基础上，粗略估计了这四个大的八极分子的一阶超极率，得到与实验值趋势一致的结…