New type of hybrid magnetic lens for practical applications of HTS bulk superconductors

Based on air cushion belt conveyor, a new type of belt conveyor named water cushion belt conveyor is proposed. It has a wide scope of applications for its features such as stability and reliability, capability of full load start-up, and environment-friendliness. This paper studies the working mechanism and lubricating mechanism of the water cushion belt conveyor. The basic lubrication equation of the water cushion is deduced from the universal form of the Reynolds equation used to study the pressure film properties of the water cushion. The design of the key part of the water cushion device is described in details. The research can be taken as a reference in practical applications.

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Introducing a Computer-Adaptive Testing System to a Small School District

Online Assessment and Measurement ◽

10.4018/978-1-59140-497-2.ch010 ◽

2011 ◽

pp. 143-156

Author(s):

Tim Pelton ◽

Leslee Francis Pelton

Keyword(s):

School District ◽

Essential Elements ◽

Testing System ◽

Measures Of Academic Progress ◽

Small School ◽

Northwest Evaluation Association ◽

Computer Adaptive Test ◽

Practical Applications ◽

Small School District ◽

New Type

A computer-adaptive test (CAT) is a relatively new type of technology in which a computer program “intelligently” selects and presents questions to examinees according to an evolving estimate of achievement and a prescribed test plan. A well written CAT can be expected to efficiently produce student achievement estimates that are more accurate and more meaningful than a typical teacher-generated paper and pencil (P&P) test with a similar number of questions. Although this method of testing sounds good in theory, many schools and districts are waiting for positive examples of practical applications and observable benefits before adopting a CAT. This chapter begins by describing the essential elements of meaningful measurement in education and the features of a typical CAT. Next, we describe the Measures of Academic Progress (MAP) system of the Northwest Evaluation Association (NWEA; 2004) and observations made during the introduction of this system into a small semirural school district. Finally, as independent observers, we provide a set of recommendations to help guide other districts as they consider the potentials of implementing a CAT system to guide instruction within their schools.

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Form-finding analysis for a new type of cable–strut tensile structures generated by semi-regular tensegrity

Advances in Structural Engineering ◽

10.1177/1369433216661335 ◽

2016 ◽

Vol 20 (5) ◽

pp. 772-783 ◽

Cited By ~ 7

Author(s):

JinYu Lu ◽

Xiao Dong ◽

XiLei Zhao ◽

XiaoLong Wu ◽

GanPing Shu

Keyword(s):

Design Method ◽

Geometric Transformation ◽

Structural System ◽

Form Finding ◽

Practical Applications ◽

New Type ◽

Equilibrium Matrix ◽

Cable Dome ◽

Value Decomposition ◽

Form Finding Analysis

A tensegrity structure is a type of self-balancing tensile structure, which consists of tension cables surrounding compression struts. Based on the geometry and topology of the classic half-octahedron tensegrity, this article presents a form-finding analysis of semi-regular tensegrity units using singular value decomposition of the equilibrium matrix. We propose the design formulas for the unit geometric transformation, obtain its internal self-stress modes and inextensional mechanism modes, and verify its geometric stability. Then, we devise a design method and compute the overall feasible self-stress of a tensegrity torus. A novel cable–strut tensile structural system is generated through combining a tensegrity torus and a Levy-type cable dome. Finally, a physical model is constructed to verify the feasibility of this structural system. This work enriches existing forms of tensegrity structures and contributes to further practical applications of tensegrity systems.

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On the relationship between fundamental science and contemporary applied research in the field of high-rate laser Nanowhiskerography

Nexo Revista Científica ◽

10.5377/nexo.v34i06.13139 ◽

2021 ◽

Vol 34 (06) ◽

pp. 1730-1739

Author(s):

Sergey Nikoloaevich Maksimovsky ◽

Alexandr Nikolaevich Bobkov ◽

Aleksey Urievich Stavtsev

Keyword(s):

High Pressures ◽

High Rate ◽

Condensed State ◽

Threshold Power ◽

Practical Applications ◽

Relevant Today ◽

New Type ◽

Solar Silicon ◽

Nobel Prize Laureates ◽

The Relationship

In practice, in various areas of life, there is often a need to use materials that have mutually exclusive requirements. Therefore, the study of the issues related to manufacturing materials in certain states for certain technical applications, and methods of controlling structurally sensitive properties to obtain specified effects, is quite relevant today. A new effect was discovered, namely, the rapid growth of amorphous and composite materials in the form of “coherent” nanowhiskers using laser-induced plasma at temperatures exceeding 4,000oC and high pressures up to 100 thousand atmospheres at a rate reaching 80-100 m/s. This method of growing whiskers is based on fundamental studies of pulsed laser radiation and predictions of Nobel Prize laureates – Ch.H. Townes, A.M. Prokhorov (splitting of a laser beam of above-threshold power) and G.A. Askaryan (effects of self-focusing of light in the condensed state of matter, and sublimation evaporation). The authors show possible practical applications of this method, such as protection of securities, banknotes, and plastic cards, as well as production of a new type of silicon batteries, automotive catalysts, and solar silicon batteries.

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Simulation of proton radiography terminal at the Institute of Modern Physics

Laser and Particle Beams ◽

10.1017/s0263034615000440 ◽

2015 ◽

Vol 33 (3) ◽

pp. 439-447 ◽

Cited By ~ 1

Author(s):

Yan Yan ◽

Lina Sheng ◽

Zhiwu Huang ◽

Jie Wang ◽

Zeen Yao ◽

...

Keyword(s):

Detection Efficiency ◽

Heavy Ion ◽

Transmission Efficiency ◽

Maximum Energy ◽

Proton Radiography ◽

Magnetic Lens ◽

Radiography System ◽

Modern Physics ◽

High Detection Efficiency ◽

New Type

AbstractProton radiography is used for advanced hydrotesting as a new type radiography technology due to its powerful penetration capability and high detection efficiency. A new proton radiography terminal will be developed to radiograph static samples at the Institute of Modern Physics of Chinese Academy of Science. The proton beam with the maximum energy of 2.6 GeV will be produced by Heavy Ion Research Facility in Lanzhou-Cooling Storage Ring. The proton radiography terminal consists of the matching magnetic lens and the Zumbro lens system. In this paper, the design scheme and all optic parameters of this beam terminal for 2.6 GeV proton energy are presented by simulating the beam optics using WINAGILE code. My-BOC code is used to test the particle tracking of proton radiography beam line. Geant4 and G4beamline codes are used for simulating the proton radiography system. The results show that the transmission efficiency of proton without target is 100%, and the effect of secondary particles can be neglected. To test this proton radiography system, the proton images for an aluminum plate sample with two rectangular orifices and a step brass plate sample are respectively simulated using Geant4 code. The results show that the best spatial resolution is about 36 μm, and the differences of the thickness are not >10%.

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Tunable negative permittivity in Ti3SiC2 MAX phase/Polymethyl methacrylate metacomposites at radio-frequency region

Functional Materials Letters ◽

10.1142/s1793604718501011 ◽

2019 ◽

Vol 12 (01) ◽

pp. 1850101

Author(s):

Yunpeng Qu ◽

Guohua Fan ◽

Yao Liu

Keyword(s):

Polymethyl Methacrylate ◽

Low Frequency ◽

Frequency Region ◽

Negative Permittivity ◽

Max Phase ◽

Practical Applications ◽

Impedance Response ◽

Conduction Behavior ◽

New Type ◽

Conductivity Spectra

Metacomposites with negative permittivity have triggered tremendous fundamental and practical attention in recent years. In this paper, Ti3SiC2 MAX phase/Polymethyl methacrylate (PMMA) metacomposites with different Ti3SiC2 content were prepared. Weakly negative permittivity value (between [Formula: see text] and 0) was observed near percolation (Ti3SiC2 content of 60[Formula: see text]wt.%), attributing to moderate carrier concentration in Ti3SiC2 networks, and negative permittivity was tuned by tailoring conductive Ti3SiC2 networks. AC conductivity spectra and negative permittivity spectra of composites over percolation were explained by Drude model, indicating metal-like conduction behavior and low-frequency plasmonic oscillation in composites. The impedance response of composites was analyzed by equivalent circuit models, manifesting correspondence between inductor and negative permittivity. This work presented a new type of metacomposite constructed by Ti3SiC2 MAX phase and further revealed the generation mechanism of negative permittivity, which will greatly facilitate the practical applications of MAX phase in metacomposites.

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New type of sludge density meter using microwaves for application in sewage treatment plants

Water Science & Technology ◽

10.2166/wst.1996.0005 ◽

1996 ◽

Vol 33 (1) ◽

pp. 53-60

Author(s):

Seiji Yamaguchi

Keyword(s):

Phase Difference ◽

Sewage Treatment ◽

Field Tests ◽

Measuring Method ◽

Microwave Measurement ◽

Sewage Treatment Plants ◽

Practical Applications ◽

Treatment Processes ◽

Wide Range ◽

New Type

Sludge density is an important index for the control of sewage and sludge treatment processes. A new measuring method for sludge density, the microwave phase difference method, has been tested with a good correlation between density and phase difference. Comparison tests with conventional ultrasonic density meters have shown characteristics that are superior to the flow-through type and equivalent to the defoaming type. We developed a sludge density meter that uses this method and made long-term field tests on the sludge pipelines in sewage treatment plants. Results demonstrated a good correlation with the values that were obtained by manual analysis, with excellent linearity from low density of less than 1% to high density of about 30%. This new microwave measurement method is less affected by soil build-up and air bubbles, is able to measure a wide range of densities from low to high, and is capable of continuous measurement. It is a highly reliable measuring method for practical applications.

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Synergy between NIR luminescence and thermal emission toward highly sensitive NIR operating emissive thermometry

Scientific Reports ◽

10.1038/s41598-020-76851-3 ◽

2020 ◽

Vol 10 (1) ◽

Author(s):

Lukasz Marciniak ◽

Karolina Trejgis ◽

Radosław Lisiecki ◽

Artur Bednarkiewicz

Keyword(s):

Thermal Emission ◽

Thermal Sensitivity ◽

Relative Sensitivity ◽

Black Body ◽

Temperature Dependent ◽

Host Matrix ◽

Practical Applications ◽

Highly Sensitive ◽

New Type ◽

Nir Luminescence

AbstractThere are many figures of merit, which determine suitability of luminescent thermometers for practical applications. These include thermal sensitivity, thermal accuracy as well as ease and cost effectivness of technical implementation. A novel contactless emission thermometer is proposed, which takes advantage of the coexistence of photoluminescence from Nd3+ doping ions and black body emission in transparent Nd3+ doped-oxyfluorotellurite glass host matrix. The opposite temperature dependent emission from these two phenomena, enables to achieve exceptionally high relative sensitivity SR = 8.2%/°C at 220 °C. This enables to develop new type of emissive noncontact temperature sensors.

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Renewable high-density spiro-fuels from lignocellulose-derived cyclic ketones

Chemical Communications ◽

10.1039/c7cc05101h ◽

2017 ◽

Vol 53 (74) ◽

pp. 10303-10305 ◽

Cited By ~ 23

Author(s):

Junjian Xie ◽

Xiangwen Zhang ◽

Lun Pan ◽

Genkuo Nie ◽

Xiu-Tian-Feng E ◽

...

Keyword(s):

Freezing Point ◽

High Density ◽

Cyclic Ketones ◽

Practical Applications ◽

New Type ◽

First Time

Renewable high-density spiro-fuels are synthesized from lignocellulose-derived cyclic ketones for the first time, which show high density, low freezing point and represent a new type of renewable high-density fuel attractive for practical applications.

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