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Online since: January 2015
Authors: Nikolay Sergeevich Bolshakov, Sergey Aleksandrovich Krivoy, Xeniya Mikhailovna Rakova
Introduction Environmental issues and energy security increasingly affect our lives.
Wind turbine ‒ a set of technical devices designed for converting the kinetic energy of wind stream into mechanical energy of generator rotor rotation.
It is known for example that the shape of the building affects thermal insulation properties (due to convex qualities of building) [18].
Furthermore, it affects the speed and direction of wind that ventilate building or construction [19].The project proposal to strengthen the wind flow by streamlining facades is considered in this article.
Due to the fact that the site of the school is elevated, and the surrounding buildings are not represented by high-rise buildings, which would significantly affect the wind direction and speed, height of the tower should take no more than the average height of the school (5-10 meters).
Online since: September 2013
Authors: Tijjani Adam, U. Hashim, M. Wesam Al-Mufti
Using heat transfer model at the macro-scale and experimentally reported material’s thermoelectric properties (S, σ, κ), the performance of SiNW as a thermoelectric material is re-evaluated in a realistic scenario here(2).
In nanowire as nanotechnology using by the piezoelectric model in COMSOL Multiphysics, piezoelectric effect can be seen as a transfer of electric to mechanical energy and vice-versa.
Buddharaju presented Poly nanowire (Si-NW) based thermoelectric device (TED) has potential applications, Christian Falconi presented in Piezoelectric nanostructures can transduce mechanical energy into electrical energy for powering implantable microsystems for in-vivo biomedical applications(5,6).
In addition, they factor in the electrical contact resistance and investigate how such effect can prove detrimental to its thermoelectric performance.
Hypothetically, the size of the Si-NW will affect the contact resistance due to the difference in the area contacted to the metal electrodes, i.e. when the diameter of the Poly-Si-NW is reduced, the electrical contact resistance should increase as well.
Online since: March 2022
Authors: Jiena Lynne R. Pauco, Erwin P. Enriquez
Inkjet printing of electrochemical sensors is commonly based on the use of metal nanoparticle inks whose conducting properties exceed that of their bulk counterpart [4], [5].
Factors such as surface tension, viscosity, nanoparticle concentration, and solvent drying rate play an important role in achieving stable, single, satellite-free drops upon jetting [18].
Cyclic voltammetry (CV) is an electrochemical technique commonly employed for investigating the reduction-oxidation process in the analyte solution, and the surface properties of the electrodes.
To investigate the properties of the inkjet-printed (IJP) three-electrode system, the diffusion-controlled electrode reaction of the widely studied, reversible ferri(III)/ferro(II)cyanide redox couple was conducted using cyclic voltammetry (CV).
Moon, “Influence of fluid physical properties on ink-jet printability,” Langmuir, vol. 25, no. 5, pp. 2629–2635, 2009, doi: 10.1021/la900059m
Online since: May 2014
Authors: Anthony J. DeArdo, Xiao Jun Liang, Ming Jian Hua
The exact nature of this minor transformation product depends on several factors including bulk composition, segregation and cooling rate.
Interestingly, MA is believed to be one of the main factors causing the deterioration of toughness of steels.
Although the macro-properties of these high strength steels are quite good, the nature of the bainitic and martensitic reactions can create problems in certain cases.
Bhadeshia, Bainite in steels : transformations, microstructure and properties, Institute of Materials, London, 1992
DeArdo, AIST Steel Properties and Applications Conference Proceedings - Combined with MS and T'12, Materials Science and Technology 2012, Pittsburgh,PA, 2012, pp. 77-86
Online since: July 2022
Authors: Mathias Liewald, David Briesenick
Furthermore, these advanced material properties lead to relatively high process loads for the presses and tools during forming and shear cutting operations, accelerating their wear [2].
It is mainly caused by an elastic strain recovery of material after unloading and can significantly affect the dimensional quality of the formed part.
Research work by ul Hassan et al. [5] identified the strain dependency of Young’s modulus and strain hardening as two important and sensitive factors on springback.
For these reasons, sophisticated process planning of forming tools and processes require an accurate springback prediction based on proper descriptions of elastic and plastic material properties.
First, a conventional determination of elastic-plastic material properties was done by standardized uniaxial tensile tests [11].
Online since: July 2025
Authors: Alif Alfarisyi Syah, Neena Zakia, Irma Kartika Kusumaningrum, Anugrah Ricky Wijaya, Al Izaa Hafilah
The difference in salinity levels can be caused by several factors, namely rainfall, water circulation patterns, evaporation, and the presence of river flow mixed in seawater [16].
These interactions are expected to make the properties of calcium alginate silica gel more stable and have high selectivity to NaCl.
Where, the higher the ion selectivity properties, the more ions will be absorbed [24].
Sodium Alginate Film: the Effect of Crosslinker on Physical and Mechanical Properties [20] Kamisyah, S., Sapar, A., Brilliantoro, R., & Sayekti, E. (2020).
Sodium alginate film: The effect of crosslinker on physical and mechanical properties.
Online since: September 2014
Authors: Ku Zilati Ku Shaari, Zakaria Man, Duvvuri Subbarao, Babar Azeem
However the superabsorbent polymer materials (SPMs) have recently got fame due to their interesting properties in terms of their use to produce CRU.
The coating thickness and solubility of UF were characterized as the controlling factors for the slow release such that higher thickness and lower solubility produced the best slow release characteristics.
Liu [6] exploited these properties and used SP technique to produce SPM-coated urea.
[6] Liu, M., “Synthesis of a slow‐release and superabsorbent nitrogen fertilizer and its properties”, Polymers for advanced technologies, vol. 17, no. 6, pp. 430-438, 2006
[7] Liang, R., “Preparation and properties of a double-coated slow-release and water-retention urea fertilizer”, Journal of agricultural and food chemistry, vol. 54, no. 4, pp. 1392-1398, 2006
Online since: February 2014
Authors: Wa Cao, Ruan Rong Yi
The red mud sintered bricks have good mechanical properties.
Tsakiridis [4] draw a conclusion that adding red mud would not affect properties of sintered bricks through a comparative experiments using a common ingredients and a gal 3.5% red mud materials.
However, red mud sintered brick failed to be industrialized in China, which still needs further work. 3.1.2 Subgrade materials Red mud has certain cementious properties and price advantage, commonly be used as subgrade materials.
SiO2, CaO, Na2O,A12O3, Fe2O3, TiO2, K2O, alkali components and trace other non-ferrous metal in red mud make the plastic products with addition of red mud have good anti-aging properties.
Conclusions Comprehensive utilization of red mud is a very important and urgent problem, though years of research has made some successful application, but most of the research failed to achieve industrial application because of economic factors, especially Bayer red mud.
Online since: January 2012
Authors: James C. Williams, Wei Jie Lu, Adam L. Pilchak
Introduction The role of microstructure in affecting fatigue behavior of titanium (Ti) alloys has been recognized for many years.
Continuous cycling fatigue life also is affected by the type and degree of microtexture.
Both factors contribute to the dissipation of plastic work during fracture and the resulting morphology on the fracture surface.
In this paper we describe the current understanding of fatigue crack initiation and the early stages of growth in α+β Ti alloys as affected by microtexture.
Such a sharp microstructural discontinuity is accompanied by a commensurate change in mechanical properties in the base metal and process zone.
Online since: September 2021
Authors: Madalina Albu
The application of these processes depends on the equilibria established between the following properties of the pollutants: solubility in water and air, adsorption in soil and air and the ratio between the liquid phase and the gas phase at different temperatures and pressures.
In addition to the characteristics of pollutants, an important role in the applicability of soil depollution processes with the help of air currents is played by the properties of the soil.
Soils are characterized by certain physical, chemical and biological properties.
The composition and arrangement of soil components determine a number of qualities or properties that influence the retention and migration of pollutants, while suggesting the possibility of depollution.
The preparation of soil samples for the determination of physical and mechanical properties is carried out, either on the soil as such, fresh or previously dried at room temperature, depending on the parameters we follow.
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