Quasicrystal metasurfaces,a kind of two-dimensional artificial optical materials with subwavelength meta-atoms arranged in quasi-periodic tiling schemes,have attracted extensive attentions due to their novel optical *...
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Quasicrystal metasurfaces,a kind of two-dimensional artificial optical materials with subwavelength meta-atoms arranged in quasi-periodic tiling schemes,have attracted extensive attentions due to their novel optical *** a recent work,a dual-functional quasicrystal metasurface,which can be used to simultaneously generate the diffraction pattern and holographic image,is experimentally *** proposed method expands the manipulation dimensions for multi-functional quasicrystal metasurfaces and may have important applications in microscopy,optical information processing,optical encryption,etc.
In this paper,a semi-analytical calculation model for the coefficient of friction(COF)of single spherical protrusions is *** allows the prediction of the deformative friction part(μ_(def))and adhesive friction part(...
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In this paper,a semi-analytical calculation model for the coefficient of friction(COF)of single spherical protrusions is *** allows the prediction of the deformative friction part(μ_(def))and adhesive friction part(μ_(def))of the friction pairings steel|polyethylene with ultra-high molecular weight(PE-UHMW)and polyoxymethylene(POM)|*** experimental studies included unlubricated friction tests,which served to determine the total COF(μ_(def)),as well as tests being lubricated with silicone oil,from whichμ_(def)is *** on the verification tests,it could be shown that both states of lubrication result in the same deformation and that the relationship between the rear angle(w)andμ_(def)postulated in the calculation model is ***,friction tests with segmented spheres were carried out,which allow a specific variation of *** can be concluded that for both pairings theμ_(def)is generally of minor significance(approx.1/3μ_(tot))and the influence of theμ_(adh)predominates(approx.2/3μ_(tot))the friction *** themtot decreases with increasing contact pressure especially in the low pressure range and depends on the form of motion(continuous and discontinuous).
This study aimed to identify the impact of a brain-oriented motor program on the accuracy element of Jordanian university students. The sample of the study consisted of 50 students from the study community. The resear...
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Steel shear wall (SSW) is an efficient system used to construct and improve many structures over the past decades. The main weakness of the traditional flat plate SSW is the premature buckling of the plate, for which ...
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The extensive research initiative focuses on the application of MobileNet techniques for identifying Heart diseases through the examination of electrocardiogram (ECG) images. Given the critical importance of accurate ...
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In this study, correlation between volume of tumor sub-regions and their corresponding Magnetic Resonance (MR) image intensities of patients of Glioblastoma Multiforme (GBM) are analyzed. For this, FLAIR and T2 -weigh...
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Aluminium metal matrix composites, have emerged as a potentially useful high class of materials in recent years. The surface roughness and wear characteristics of the material are the fundamental material factors that...
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Industrialization is the vital to the development of any country’s economy. However, on the other hand, the production of industrial waste is increasing enormously, which adversely effects the environment and natural...
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The research concentrates to treat wastewater by natural method. Wastewater treatment consumes the prospective to reduce water demand. Constructed Wetlands are a wastewater treatment method for optimizing their perfor...
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ISBN:
(纸本)9781032803722
The research concentrates to treat wastewater by natural method. Wastewater treatment consumes the prospective to reduce water demand. Constructed Wetlands are a wastewater treatment method for optimizing their performance to meet treated discharge standards. These systems have progressed and effective replacement for conventional wastewater treatment. Natural wetlands act as the "kidneys of the Earth." The demand for water has increased as the urban population, urbanization, and economic development have expanded, particularly in water-scarce regions. The Conventional wastewater treatment methods pollute environmental and many numbers of labour for their operation and maintenances, and huge construction cost. Therefore, this paper summarizes an environmentally friendly technology for treating wastewater. The main aim of the study is to reduce the carbon footprint of the environmental for wastewater treatment process. There are four phases for experimental investigations, the first phase is to optimize the ratio of materials from earlier studies with different parameters such as different filter media, different plantations and different in and outflow. In the second stage, the experimental work is carried out to find the optimal result. The third phase of research is to develop a prototype of wetland system. The fourth phase of research is involved in predicting recycling and reduction technology for solid waste generation and wastewater treatment process. Based on the research, the biological oxygen demand (BOD) was reduced by 68.5 percent, 52 percent for Chemical Oxygen Demand (COD), 79.4 percent for Total Suspended Solids (TSS), 68.5 percent for Total Dissolved Solids (TDS), 32 percent for Total Nitrogen(N), and 38.2 percent for Total Phosphorous in wastewater from the UTAS-Shinas after treatment. The efficiency of wetlands system is compared between before and after treatment of wastewater in UTAS – Shinas. The treated water can be reused in many uses, such as
The electrochemical CO_(2)reduction reaction to produce multi-carbon(C_(2+)) hydrocarbons or oxygenate compounds is a promising route to obtain a renewable fuel of high energy ***,producing C_(2+)at high current densi...
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The electrochemical CO_(2)reduction reaction to produce multi-carbon(C_(2+)) hydrocarbons or oxygenate compounds is a promising route to obtain a renewable fuel of high energy ***,producing C_(2+)at high current densities is still a ***,we develop a Cu-Zn alloy/Cu-Zn aluminate oxide composite electrocatalytic system for enhanced conversion of CO_(2)to C_(2+)*** Cu-Zn-Al-Layered Double Hydroxide(LDH) is used as a precursor to decompose into uniform Cu-Zn oxide/Cu-Zn aluminate *** electrochemical reduction,Cu-Zn oxide generates Cu-Zn alloy while Cu-Zn aluminate oxide remains *** alloy and oxide are closely stacked and arranged alternately,and the aluminate oxide induces the strong electron interaction of Cu,Zn and Al,creating a large number of highly active reaction interfaces composed of 0 to+3 valence metal *** the help of the interface effect,the optimized Cu_(9)Zn_(1)/Cu_(0.8)Zn_(0.2)Al_(2)O_(4)catalyst achieves a Faradaic efficiency of 88.5% for C_(2+)products at a current density of 400 mA cm^(-2)at-1.15 V versus reversible hydrogen *** in-situ Raman and attenuate total reflectance-infrared absorption spectroscopy(ATR-IRAS) spectra show that the aluminate oxide at the interface significantly enhances the adsorption and activation of CO_(2)and the dissociation of H2O and strengthens the adsorption of CO intermediates,and the alloy promotes the C-C coupling to produce C_(2+)*** work provides an efficient strategy to construct highly active reaction interfaces for industrial-scale electrochemical CO_(2)RR.
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