In this work, aqueous-based tape casting was used to produce nano-zirconia substrates. Rheological properties of the slurries were measured at room temperature. The acrylic-based suspensions showed a pseudoplastic beh...
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In this work, aqueous-based tape casting was used to produce nano-zirconia substrates. Rheological properties of the slurries were measured at room temperature. The acrylic-based suspensions showed a pseudoplastic behavior and remained stable and homogeneous. Warm pressing was used to laminate two or more cast tapes, in order to produce SOFC structures. Strength behavior of the sintered and laminates tapes was also evaluated.
ALICE is a large experiment at the CERN Large Hadron Collider. Located 52 meters underground, its detectors are suitable to measure muons produced by cosmic-ray interactions in the atmosphere. In this paper, the studi...
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The sodium‐ion battery is a promising battery technology owing to its low price and high abundance of sodium. However, the sluggish kinetics of sodium ion makes it hard to achieve high‐rate performance, therefore im...
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The sodium‐ion battery is a promising battery technology owing to its low price and high abundance of sodium. However, the sluggish kinetics of sodium ion makes it hard to achieve high‐rate performance, therefore impairing the power density. In this work, a fiber‐in‐tube Co 9 S 8 ‐carbon(C)/Co 9 S 8 is designed with fast sodiation kinetics. The experimental and simulation analysis show that the dominating capacitance mechanism for the high Na‐ion storage performance is due to abundant grain boundaries, three exposed layer interfaces, and carbon wiring in the design. As a result, the fiber‐in‐tube hybrid anode shows a high specific capacity of 616 mAh g −1 after 150 cycles at 0.5 A g −1 . At 1 A g −1 , a capacity of ca. 451 mAh g −1 can be achieved after 500 cycles. More importantly, a high energy density of 779 Wh kg −1 and power density of 7793 W kg −1 can be obtained simultaneously.
We demonstrate a large-scale day-time radiative cooling metafilm that is fabricated by a roll-to-roll process. The metafilm has demonstrated 93 W/m2 cooling power at noon-time, which is a performance promising for lar...
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The inventory control systems has an important role to monitor the condition of the goods at the supply chain stage of goods distribution from the central warehouse to retail in accordance with consumer demand. The re...
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Developing efficient electrocatalysts for practical applications in energy conversion and storage systems is receiving considerable attention. In the present study, graphene oxide supported cobalt hydroxide (GO/Co(OH)...
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Cassava is an agricultural material that is considered as important raw resources in the industrial sector. The benefits are even greater after being modified using lactic acid bacteria. However, the mocaf industry of...
Cassava is an agricultural material that is considered as important raw resources in the industrial sector. The benefits are even greater after being modified using lactic acid bacteria. However, the mocaf industry often causes water and air pollution. Environmental problems arise after the fermentation process. Determination problems with lightness, TDS (Total Dissolved Solid), conductivity and pH analysis are required to measure the impact to the environment. This research was used waste water from mocaf during 3 days fermentation. The wastewater had the highest color level (Lightness) on initial day of fermentation at 83.7±3.73 and then decrease along the day of fermentation at the averages of 65.2±2.0. The highest TDS was resulted from the mocaf wastewater at a value of 1218 ± 4.6 ppm which continued to decline until day 4. The conductivity and pH showed a decrease along the day of fermentation. As conclusion, physical characteristic of wastewater from mocaf production could be analyzed specifically and determined through color, TDS, conductivity, and pH.
Revealing the structural/electronic features and interfacial interactions of monolayer MoS2 and WS2 on metals is essential to evaluating the performance of related *** this study,we focused on the atomic-scale feature...
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Revealing the structural/electronic features and interfacial interactions of monolayer MoS2 and WS2 on metals is essential to evaluating the performance of related *** this study,we focused on the atomic-scale features of monolayer WS2 on Au(001) synthesized via chemical vapor *** tunneling microscopy and spectroscopy reveal that the WS2/Au(001) system exhibits a striped superstructure similar to that of MoS2/Au(001) but weaker interfacial interactions,as evidenced by experimental and theoretical ***,the WS2/Au(001) band gap exhibits a relatively intrinsic value of ~ 2.0 ***,the band gap can gradually decrease to ~ 1.5 eV when the sample annealing temperature increases from ~370 to 720 ℃.In addition,the doping level (or Fermi energy) of monolayer WS2/Au(001) varies little over the valley and ridge regions of the striped patterns because of the homogenous distributions of point defects introduced by ***,this work provides an in-depth investigation into the interfacial interactions and electronic properties of monolayer MX2 on metal substrates.
This paper describes a proof of concept for X-ray backscatter imaging beyond its common 2D radiograph capabilities by utilizing energy discrimination on detectors in an X-ray backscatter system. This study is a direct...
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ISBN:
(纸本)9781538622834
This paper describes a proof of concept for X-ray backscatter imaging beyond its common 2D radiograph capabilities by utilizing energy discrimination on detectors in an X-ray backscatter system. This study is a direct improvement over previous works, which required a separate scan for each depth being imaged;the current study achieves depth sensitive images with just a single scan. This technique is applicable to images generated from materials found in both medical and non-destructive testing environments. The system consists of a collimated pencil-beam of radiation surrounded by detectors that measure the fluence of backscattered photons coming from the object under investigation. Since X-ray tubes emit a spectra of radiation and the penetration depth of a photon is energy dependent, detectors using energy discrimination will measure signals generated from different depths within the object. The stochastic radiation transport code MCNP6 was used to simulate and test this concept. The simulated backscatter system used a 5 mm pencil-beam surrounded by four 5 cm diameter detectors, with the photon spectra modeled after a 150 kVp lead target X-ray tube. The system raster scanned over a phantom made of tissue that had the letters U and F embedded 6 cm and 8 cm deep, respectively. The letter U was made of air while the letter F was made of compact bone. The measured signals were discriminated into two energy groups, one consisting of photons less than 90 keV and the other anything above it. The two resulting images clearly proved the depth sensitive imaging capability, with the lower energies detected only showing the letter U, while the higher energies showed both the letters U and F. This technique should easily be applicable to industrial materials, though higher interrogation energies are likely needed.
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