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This article discusses a study that explores how Chinese readers use contextual cues to segment words in Chinese texts. The study found that both lexical-level and sentence-level contextual cues are important for word segmentation, with higher frequency words and words favored by the sentence context being more likely to be segmented correctly. The study also found that readers may use the sentence-level cue earlier in the segmentation process. Another experiment using eye-tracking technology showed that the presence of semantically related words and sentence-level context influenced readers' segmentation of sentences. Overall, the study suggests that Chinese readers rely on both types of contextual cues when segmenting words. [Extracted from the article]

The main objective of this study was to investigate the trends of Cu, Pb, Ni, Cr and Cd concentrations present in printed circuit boards of cathode ray televisions over the years. Dismantling, shredding, pulverisation, digestion and chemical analysis were followed for sorting, separation, and analysis of metal concentrations in printed circuit boards of cathode ray televisions. After digestion using EPA SW 846 method 3050B, the extracts were analysed for metal concentrations using atomic absorption spectrophotometric technique. The results obtained showed that the mean metal concentrations in all televisions' printed circuit boards studied were – Cu: 11.73 ± 2.91%, Pb: 3.30 ± 0.86%, Ni: 0.106 ± 0.138%, Cr: 0.00523 ± 0.00130% and Cd: 0.00291 ± 0.00148%. There was virtually no regular pattern in the average metal levels from 1975 to 1999; they initially decreased, increased and then decreased. However, an observable decrease in the level of these metals was noticed from 2000 to 2009. Cu, Pb, Ni, Cr and Cd were noticed to have decreased from 2000–2004 to 2004–2009. [ABSTRACT FROM AUTHOR]

[Display omitted] • Pb in lead glass was reduced to metal Pb by mechanochemical ball milling with Al. • More than 96 % of Pb can be extracted after reduction and HCl leaching process. • PbCl 2 can be recovered from leaching solution after cooling crystallization. The safe disposal of waste cathode ray tubes (CRTs) has always been a serious problem due to the stable microstructure of toxic lead (Pb) located in glass. Thousands of researches have been trying to explore environmental and efficient ways to dispose of waste CRTs. To recycle lead from waste CRT funnel glass effectively, a mechanochemical reduction method has been developed in this research. Aluminum was used as a reductant, and the hydrochloric acid solution was used in the leaching process to separate lead from the solution. After mechanochemical ball milling with aluminum, lead ion in CRT funnel glass was transferred into nano-sized element lead. Lead recovery from CRT funnel glass increased significantly as compared to non-activated leaded glass. Approximately 40 % of lead was leached after mechanical activation without aluminum, while over 96 % of lead in the CRT funnel glass could be recovered after mechanochemical reduction with aluminum. Lead chloride (PbCl 2) can be recycled from the leaching solution after cooling crystallization. Nano-sized Pb formation and the structural changes of leaded CRT funnel glass by mechanochemical reduction process contributed to obvious improvement in lead recovery. This research provided a high-efficiency and feasible approach for recovering lead in form of PbCl 2 crystal from leaded glass. [ABSTRACT FROM AUTHOR]

Commonly used technologies for visual pattern stimulation cannot operate in a magnetic resonance imaging room because they can interfere with the operation of the scanner and are vulnerable to its electromagnetic and magnetic fields. The aim of this single-center prospective observational study was to introduce a novel, structurally uncomplicated, easy-to-maintain, patterned edge-illuminated display (PEID) device for visual pattern-reversal stimulation, compare it with a commonly used cathode ray tube screen, and verify the equivalence of quantitative assays. The left and right eyes of 36 healthy participants with undilated pupils were examined on a commercial visual evoked potential (VEP) apparatus and on the PEID device, where pattern-reversal transient VEPs were elicited by checkerboard stimuli with large (0.89°; 0.86°–0.92°) and small (0.21°; 0.20°–0.23°) checks. The PEID device demonstrated the required reliability and dynamic characteristics, as well as precise time-locking required for a VEP diagnosis. The results of Deming's correlation analysis showed that both the commercial cathode ray tube monitor and the PEID device produced identical VEP results within the context of experimental uncertainty. The standard deviation of Deming's regression may indicate the uncertainty of the VEPs measured in clinical practice. The Bland-Altman analysis of the mean showed no significant difference in the amplitude and peak time of VEPs measured on the PEID device compared to that of the commercial cathode ray tube monitor. The presented PEID device meets all the required standards and can be easily installed in various types of commercial magnetic resonance imaging scanners. [ABSTRACT FROM AUTHOR]

This article extends recent research about the material impact of energy-consuming media technologies by describing the role of oil and its derivatives in the production and consumption of television in the United States after the Second World War. It starts by exploring reasons why the material dimensions of oil have received limited scholarly attention in media history. Then it examines television by describing how the component parts of a TV receiver—the cathode ray tube, the chassis into which it was set, and the cabinet housing the chassis—incorporated elements made with oil. Finally, interpreting prior historiography through the lens of oil, it describes the role these different components played in conflicting discourses about the space of the home, especially the living room, in postwar America. [ABSTRACT FROM AUTHOR]

• Electronic recycling exposes workers to toxic metals, e.g. lead, cadmium and nickel. • Metals and dust concentrations are associated with the volume of materials treated. • Dismantling of cathode ray tubes generates more lead and yttrium than other devices. • Exposures to metal mixtures increase risk of renal and nervous system disorders. • Occupational health & safety practices are inadequate in most facilities. Electronic waste recycling (e-recycling) involves manual operations that expose workers to toxic metals. We aim to describe occupational health and safety practices and workers' exposures to metals in the Canadian formal e-recycling industry, and to estimate the health risk associated with multiple exposures. This cross-sectional study documented practices through observations and questionnaires, and assessed metal exposures using personal air samples and biomarkers. Health risks were estimated relative to recognised occupational exposure guidelines, and using an additive approach for consideration of multiple exposures. Six e-recycling and one commercial recycling facilities were investigated, and the metal exposures of 99 workers (23 women) were measured. In most facilities, dust control was inadequate and personal protective equipment was improperly worn. In e-recycling, lead was detected in all air samples and in most blood samples, up to 48 µg/m3 and 136 µg/l, respectively. Other quantified metals included beryllium, mercury, arsenic, barium, cadmium, chrome, cobalt, copper, indium, manganese, nickel and yttrium. When handling cathode ray tube screens, workers were 4.9 times and 8.5 times more likely to be exposed to lead and yttrium, respectively, than workers who were not assigned to a specific type of electronics. Overall, exposures were largely associated with facility size and airborne dust concentration. The additive hazard indices for airborne exposures raised concerns for kidney disorders, for peripheral and central nervous systems, and for the male reproductive system. Minimizing airborne dust through collective control methods and adequately using personal protection should reduce metal exposures and associated health risks in this growing industry. [ABSTRACT FROM AUTHOR]

One of the essential requirements in modern civil engineering is a sustainable building, with the aim of reducing the harmful impact on the environment. Since the early XXI century, usage of recycled materials has been insisted on, which could, at least partly, substitute traditionally used materials. Although there is no serial manufacturing of TV sets with cathode ray tubes anymore, piles of cathode ray tube glass (CRT) at the waste disposal sites have still been on the increase. This experimental research was supposed to determine the potential for using subtly milled CRT glass as a supplementary cementitious material and to check the resistance of similar concretes to the sulphate action. Six testing concrete batches were made. The percentage of cement replacement percentage with CRT was: 5%, 10%, 15%, 20% and 35%, by mass. Durability assessment of concrete to sulphate action was done by visual estimation of concrete appearance as well as through testing the compressive strength variations of treated concrete specimens 3, 6, 12 and 36 months old. After soaking the specimens in a 5% solution of Na2SO4 for 36 months, concretes with 15% to 20% of replaced cement with finely ground CRT glass have simultaneously satisfactory compressive strength and resistance to sulfate attack. In this sense, this range of replacement of cement with finely ground CRT glass can be recommended for practical application. [ABSTRACT FROM AUTHOR]

Long period digital random sequence plays an important role in reliable communications and high security scenarios. This paper improved the method of generating long period digital random sequences based on the Residue Number System (RNS) and the Chinese Remainder Theorem (CRT), and a sequence mapping method after CRT extension. This paper proves that the period of sequence after mapping will not degenerate if the modulus used in the mapping stage is coprime with the period of the original sequence. By using the parallelism of RNS, the proposed method can generate sequences at high speed with fewer hardware resources. The NIST test results show that the pass rate of each test item is above 98.40%, which meets the NIST test confidence requirements, confirming the randomness of the generated sequences. An image encryption test is given as one of the example applications of the generated sequences. On the theoretical basis, by jointly optimizing the sequence mapping and iteration procedure, a hardware implementation architecture is also presented in this paper. The implementation is based on Xilinx XC7Z020CLG484-3 FPGA and compared with the implementations of classical chaotic maps. The results show that the proposed architecture has longer sequence period with less hardware resource consumption and higher generation speed and is more general. Meanwhile, the proposed architecture has fast phase switching ability, which is about 10 clock periods. This is one of the key attributes when the sequence is used in communication systems. [ABSTRACT FROM AUTHOR]

The present investigation was aimed at the utilization of alternate materials, emphasizing hazardous industrial products (red mud and cathode ray tubes), as constituents of radiation shielding concrete. The usage of these hazardous industrial products improves the sustainability and performance of the radiation shielding concrete. Five concrete blocks were cast and their density, compressive strength, gamma shielding factors, radiation absorption ratio, and transmission factor were explored. For this purpose, gamma-ray shielding measurements were done with the help of an HPGe detector. Mix-1, with zero contents of red mud and CRTs, had the lowest LAC. The LAC results demonstrated that the shielding performance of the current concretes would be better with the increase in red mud and cathode ray tube glass. The Transmission factor (TF) for the prepared concretes with a thickness of 2 cm varied between 11.9–26.1% at 0.06 MeV, while it varied between 4–13% for a thickness of 3 cm. The TF results showed that the composites with a thickness of 2, 3, or 5 cm are good shields against lower energy radiation. The radiation absorption ratio (RAR) for the prepared concretes is high at low energy, suggesting that these new composites can absorb most of the low-energy photons. The RAR results emphasize that the increase in CRTs in the new composites enhanced the radiation shielding features, and when the CRT glass is at a maximum, more attenuation was achieved. [ABSTRACT FROM AUTHOR]

• We recycled cathode ray tubes waste glasses using melt-quench process. • Bi 2 O 3 addition strategies are achieved. • Mass density increased from 2.86 to 3.08 g/cm3. • Maximum attenuation is found around 1.586 cm2/g for energy of 0.1 MeV. • CRT-Bi20 has a potential use for shielding application. Cathode-ray tubes (CRTs) from computer monitors and television sets are considered as one of the main sources of waste materials worldwide. Therefore, a new application for such out of use materials is required to solve the relatively huge amount of this waste. In this paper, the popular melt-quench technique was used to synthesis glass samples with the structure: x Bi 2 O 3 –(100- x) waste CRTs (where x = 0, 10 & 20 wt%) and designated as CRT-Bi0, CRT-Bi10, and CRT-Bi20 accordingly. The physical, structural, optical and radiation absorption competence of the glasses were investigated. The XRD analysis of the glasses reveals an amorphous structure while the mass density increased linearly with the Bi 2 O 3 content of the glasses from 2.86 to 3.08 g/cm3. The optical absorbance of the glasses initially increased and later declined in the visible region as the weight fraction of Bi 2 O 3 increased. The direct optical bandgap E g values were found to be 3.26, 2.72, and 2.64 eV whereas the indirect E g values were equal to 3.15, 2.30, and 2.26 eV for CRT-Bi0, CRT-Bi10, and CRT-Bi20, respectively. The gamma-ray interaction parameters of the glasses obtained through FLUKA simulations and XCOM computation showed that mass attenuation falls within the range 0.6991–0.0256, 1.1426–0.0276, 1.5860–0.0301 cm2/g for photon energy range 0.1–10 MeV. Generally, the computed gamma ray interaction quantities show that the gamma ray shielding ability of the CRT-Bi glasses follows the order: CRT-Bi0 < CRT-Bi10 < CRT-Bi20. This order is conserved in the computed interaction cross sections for thermal (25 meV) neutrons. On the other hand the fast neutron removal cross section follows a reverse order with values of 0.0891 cm−1, 0.0867 cm−1, and 0.0850 cm−1 for weight fraction of Bi 2 O 3 from 0 to 20 wt%. The comparison of the gamma–ray attenuation capacity of the CRT-Bi20 with common shielding materials reveals good potential for shielding application. Out of use CRT glasses may thus be recycled for use as radiation shielding glasses as described in this study for gamma radiation protection applications. [ABSTRACT FROM AUTHOR]

Geopolymers, recognized as an ecological alternative to cement concrete, are gaining more and more interest from researchers and the construction industry. Due to the registrable electrical conductivity, this material also attracts the interest of other fields of science and industry as a potential functional material. The article discusses the used geopolymer material, created on the basis of metakaolin and waste Cathode Ray Tubes (CRT) glass, reinforced with ultra-long in-house carbon nanotubes (CNT), in the context of its use as a smart material for Structural Health Monitoring. Long in-house made carbon nanotubes were added to enhance the electrical conductivity of the geopolymer. The impedance spectroscopy method was applied to investigate the conductive properties of this material. The paper shows the microscopic and mechanical characteristics of the materials and presents the results of promising impedance spectroscopy tests. [ABSTRACT FROM AUTHOR]

Schemes of reversible data hiding in encrypted domain (RDH-ED) based on symmetric or public key encryption are mainly applied in the scenarios of end-to-end communication. To provide security guarantees for the multi-party scenarios, a RDH-ED scheme for secret image sharing based on Chinese remainder theorem (CRT) is presented. In the application of ($t$ , $n$) secret image sharing, an image is first shared into $n$ different shares of ciphertext. Only when not less than $t$ shares obtained, can the image be reconstructed. In our scheme, additional data could be embedded into the image shares. To realize data extraction from the image shares and the reconstructed image separably, two data hiding methods are proposed: one is homomorphic difference expansion in encrypted domain (HDE-ED) that supports data extraction from the reconstructed image by utilizing the addition homomorphism of CRT secret sharing; the other is difference expansion in image shares (DE-IS) that supports the data extraction from the marked shares before image reconstruction. Experimental results demonstrate that the proposed scheme could not only maintain the security and the threshold function of secret sharing system, but also obtain a better reversibility and efficiency compared with most existing RDH-ED algorithms. The maximum embedding rate of HDE-ED could reach 0.500 bits per pixel and the average embedding rate of DE-IS could reach 0.4652 bits per pixel. [ABSTRACT FROM AUTHOR]

Phase unwrapping (PU) is a key processing step in interferometric synthetic aperture radar (InSAR). To date, a number of skillful single-baseline (SB) and multibaseline (MB) PU methods exhibiting different advantages have been proposed. However, as the basic principles of SB and MB PUs are essentially different, it is difficult to effectively and systematically compare the performance of SB and MB PUs, despite the knowledge that this type of analysis is important for allowing the ever-increasing number of InSAR practitioners to choose a suitable approach for practical applications and to optimally plan future InSAR satellite missions. Recently, the framework of the two-stage programming approach (TSPA) was proposed, and this allows for the majority of the existing SB PU methods to be transplanted into the MB domain, to allow practitioners to feasibly and comprehensively compare SB and MB PU methodologies. In this study, the digital elevation model (DEM) reconstruction accuracy is compared between the classical SB PU methods and their corresponding TSPA-framework-based MB PU methods using the $L^{p}$ -norm model. Interestingly, we observed that although the number of PU residues in the MB case is larger than that in the SB case, the MB PU performance is better. The reason for this is that the type of MB residue is typically dipole, so the average length of the required MB branch-cut is shorter than that of SB. It is also demonstrated that the TSPA framework can effectively improve the PU accuracy of many existing SB PU methods when the number of input interferograms is sufficient. [ABSTRACT FROM AUTHOR]

The problem of range estimation based on noisy measurements with phase ambiguity can be solved using signals across multiple frequencies by existing algorithms based on either the Chinese Remainder Theorem or lattice theory. The performances of these algorithms are constrained by the trade-off between SNR of measurements and required estimation accuracy. In this paper, we firstly propose an algorithm to find a set of wavelengths satisfying the conditions to apply the closed-form lattice algorithm from a given interval. Then we propose an enhanced lattice algorithm for range estimation based on existing lattice approaches. In the conventional lattice algorithm, the selection of an integer vector by the estimator often fails to be the ground truth because of noise. As a result, the true value can be a neighbouring lattice point of the estimated point where neighbours are defined in terms of a distance depending on the noise characteristics. In this paper, all neighbouring lattice points of the estimated point obtained by a conventional lattice algorithm are regarded as candidates for the new estimate. Then an efficient estimator is presented to choose one of those candidates to be the new estimate. The performance of the proposed algorithm, i.e. the successful probability of reconstruction, is derived mathematically. Additionally, a computation-reduced algorithm is presented to reduce the overhead of computation. The calculated probability and simulation results demonstrate the efficiency of the proposed algorithm. [ABSTRACT FROM AUTHOR]

The article features Commander Rick Husband of Texas and how he became a member of the American Astronaut Corps. Also cited are the tragic accident involving the Space Shuttle Columbia that led to the deaths of Husband, Willie McCool, David Brown, Laurel Clark, Ilan Ramon, Mike Anderson, and Kalpana Chawla, and how members of the astronaut corps are selected.

The Chinese remainder theorem (CRT)-based multiplier is a new type of hybrid bit-parallel multiplier, which can achieve nearly the same time complexity compared with the fastest multiplier known to date with reduced space complexity. However, the current CRT-based multipliers are only applicable to trinomials. In this article, we propose an efficient CRT-based bit-parallel multiplier for a special type of pentanomial $x^m+x^{m-k}+x^{m-2k}+x^{m-3k}+1, 5k+1

Summary: High Power cathodes for Vacuum Electron Tubes In the following contribution at first the historical development of different cathode types, linked to the application in specific vacuum electron tubes, is presented, especially of thoriated tungsten cathodes, of Barium (Ba) oxide cathodes, of Ba dispenser cathodes and finally of Ba scandate cathodes. The development of different types of cathodes happened in connection with different tube applications such as radio tubes, cathode ray tubes, microwave tubes and others and was enabled by progress in high and ultrahigh vacuum techniques. The performance data of these cathode types are compared, the actual emission data of Ba Scandate cathodes are presented and an outlook on future applications is given. [ABSTRACT FROM AUTHOR]

As a small theatre in a diverse community, these plays caused "linguistic disorientation" when audiences failed to register jokes or key information (Snyder-Young 2020: 114). I Playing Real: Mimesis, media, and mischief i begins with Lindsay Brandon Hunter's memory of a television advert, in which the camera pulls away from a closeup of a woman's face to show that she was an "image on a large CRT [cathode ray tube] television screen"(xiii). Edited by Dani-Snyder Young Evanston, IL: Northwestern University Press, 2020; pp.192. [Extracted from the article]

[Display omitted] • Optimization of leaching of Y and Eu from waste CRT phosphor using RSM. • ANOVA showed the significant effect of temperature and acid concentration. • Complete leaching of Y and Eu was achieved under optimum conditions. • Selective recovery of Y and Eu using precipitation at low solution pH. • Y and Eu from leaching solution were recovered as REE(PO 4). The optimization study of rare earth elements (REEs) leaching from electronic waste is imperative for industrial-scale development with cost- and energy-efficient processing. Response surface methodology (RSM) with the principle of central composite design (CCD) was utilized to optimize the Y and Eu leaching process from waste cathode ray tube (CRT) phosphor in subcritical water extraction. The analysis of variance (ANOVA) demonstrated that acid concentration and leaching temperature had a significant effect on the leaching efficiency of Y and Eu in subcritical water extraction. The obtained optimum conditions of Y and Eu leaching from waste CRT phosphor were 1.15 mol/L H 2 SO 4 solution as the leaching agent, 166 ± 1 °C, for 27 min in subcritical water at a 20 g/L of solid to liquid (S/L) ratio. The experiment under optimum conditions resulted in 99.07 % and 99.62 % leaching efficiency of Y and Eu, respectively, which had a relative error of less than 1 % from the value predicted by the model. Selective separation of Y and Eu from the leaching solution was carried out as well and it resulted in 87.72 % and 95.11 % recovery of Y and Eu, respectively. The recovery product consists mainly of REE(PO 4). This study could be the alternative process for electronic waste utilization as the secondary resources of valuable rare metals promoting the circular economy. [ABSTRACT FROM AUTHOR]

• A Mesoporous humidity control materials was prepared from stone sludge and CRT waste panel glass. • Stone sludge and CRT waste panel glass comprises a substantial amount of extractable and processable alumino-silicate. • The Al-MCM-41 has abundant mesoporous, large specific surface area and pore volume. • Mesoporous in Al-MCM-41 is in favor of capillary condensation and moisture adsorption. • Amine-grafted Al-MCM-41 with humidity control capability was successfully prepared. This study sought to overcome the high energy consumption of mechanical dehumidifiers by synthesizing humidity control materials using alumino-silicate raw materials extracted from stone sludge and cathode ray tube (CRT) waste panel glass. The structure of the synthesized materials matches that of Mobil Composition of Matter No. 41 (MCM-41) mesoporous molecular sieves, which was subjected to amine functionalization using (3-Aminopropyl) triethoxysilane at various concentrations (2.5, 5, 7.5 vol.%). The resulting materials were characterized using X-ray fluorescence analysis, small angle X-ray diffractometry, Fourier transform infrared spectroscopy, transmission electron microscopy, the Brunauer–Emmett–Teller method, and 27Al solid-state nuclear magnetic resonance spectrometry. Al-MCM-41 molecular sieves with 5.0% grafted amine functional groups presented high specific surface area and high pore uniformity resulting in the highest equilibrium moisture content (39.4 kg/kg). The high thermal and humidity buffer capacity of the proposed material could greatly enhance the comfort of interior spaces without the energy consumption of mechanical dehumidifiers. [Display omitted] [ABSTRACT FROM AUTHOR]

[Display omitted] • Calibrations for two WEEE were developed for a XRF portable spectrometer. • Direct analysis of the WEEE were explored. • Grinding is unnecessary for heterogeneous samples of CRT phosphors. • Analysis of REE on NdFeB magnets, despite being affected by matrix effects and peak overlaps, provides reliable results. Rare earth elements (REE) are a series of chemical elements characterized by physicochemical properties that give them special niche applications. Neodymium-based permanent magnets and cathode-ray tube (CRT) phosphors are important components, widely used in critical electric and electronic devices that rely on those elements. Recycling rare earth elements from these residues is very beneficial from environmental and economic points of view. Energy-dispersive X-ray fluorescence (ED-XRF) is a conventional non-destructive technique that delivers fast and accurate results regarding chemical composition, particularly appropriate for field analyses when using a portable equipment. However, neither rare earth elements nor this kind of matrixes are included in portable XRF spectrometer manufacturer's calibrations, making this technique difficult to be used to evaluate the presence of REE. Therefore, in this work, calibrations for rare earth elements and other main elements present in cathode-ray tube phosphors and neodymium-based permanent magnets were developed, mimicking target matrixes with metal oxides and sulphides using different composition combinations according to literature reported contents. Calibrations were installed in a portable XRF equipment with the objective of providing an easy and fast method for operational industry measurements. Spectra obtained were treated using proprietary software taking in consideration the overlap of peaks and matrix effects. The final installed calibrations were tested with simulated and real waste specimens of waste materials. Implementing these calibrations on a portable XRF spectrometer can aid screening of target WEEE and estimation of REE content at e-waste recycling plants in a fast and accurate way. The results show quantification is possible in real samples for all key elements in CRT phosphors and NdFeB magnets, but also that magnets are far more challenging to work with. [ABSTRACT FROM AUTHOR]

We study the codes of the title by the CRT method, that decomposes such codes into constituent codes, which are shorter codes over larger alphabets. Criteria on these constituent codes for self-duality and linear complementary duality of the decomposed codes are derived. The special class of the one-generator codes is given a polynomial representation and exactly enumerated. In particular, we present some illustrative examples of binary optimal linear codes with respect to the Griesmer bound derived from the $\mathbb {Z}_{2} \mathbb {Z}_{4}$ -additive quasi-cyclic codes. [ABSTRACT FROM AUTHOR]

A hierarchical porous carbon framework derived from betel-nut is synthesized and employed as a bifunctional cathode in a Li-O2/air battery. The prepared betel nut derived activated porous carbon (BNAPC) material exhibits an ordered and merged tube-like porous morphology and a high specific surface area of 768m²/g. The presence of both meso and micro porous leads to a well-developed 3D interconnected carbon framework, which provides an efficient path for the diffusion of the reactant (oxygen as well as air) and also allows stocking the discharge product of Li2O2. Therefore, it exhibits a high specific capacity and excellent rate performance. A maximum discharge capacity of 9560 and 2000 mAh/g at a current density of 100 mA/g for oxygen and ambient air respectively as the reactant is achieved. The prepared material also exhibits reversible cyclic stability of 27 cycles with a specific capacity of 1000 mAh/g at a 100 mA/g current density in oxygen atmosphere. [ABSTRACT FROM AUTHOR]

The present study is extremely associated with the evaluation of cathode ray tube (CRT) waste which is a growing hazardous waste management and disposal issue. The Er-added recycled glasses derived from CRT have been successfully fabricated as a component for Na 2 O–Al 2 O 3 –SiO 2 –K 2 O–CaO–SrO–BaO–PbO–Fe 2 O 3 –TiO 2 –Er 2 O 3 glass systems. The waste cathode ray tube panel glass (WPG) series were obtained by inserting the Er 2 O 3 in substitution for CRT in the amounts of 0, 1, 3 and 5 mol%. The synthesized WPG series were then subjected to numerous characterization analysis. One can firmly report that the insertion ratio from 0 to 5 mol% in Er 2 O 3 increased the glass density from 2.9216 to 2.9763 g/cm3. Further, there exists no crystalline formation with the addition of Er 2 O 3 , instead, an amorphous nature in all WPG series emerges. Microstructural images captured by the SEM technique also confirm the non-crystallinity of the fabricated samples. Energy dispersive spectroscopy (EDS) in SEM, besides, paved the way for revealing the elemental mapping of the WPG series. From the perspective of radiation shielding competencies, nuclear shielding features have been evaluated in terms of μ m and related attenuation parameters at several photon energies of 276.4–1332.5 keV by utilizing narrow beam transmission methods. The experimental data have been also confirmed to those of theoretical results by WinXCom software. The HVL results revealed superior photon radiation shielding performances for recycled WPG glasses in comparison to various concretes. In addition, exposure buildup factor (EBF) values estimated utilizing the G-P fitting approach would be useful to design or develop the synthesized glass systems for shielding applications. Furthermore, the macroscopic effective removal cross-sections for fast neutron (Σ R) have been estimated. In conclusion, the findings clearly demonstrated that Er-incorporated CRT glasses can effectively be implemented in radiation shielding applications instead of Pb having toxic effects. [ABSTRACT FROM AUTHOR]

This work deals with the improvement of perceived speech quality of flat screen TV-sets on the various broadcasting platforms of the Italian radio and TV broadcasting company Rai. It is well known that the reduced thickness of flat TVs implied a degradation of the audio quality due to the adoption of miniaturised and cheap loudspeakers compared to the ones in the former Cathode Ray Tube televisions. The research activity gave rise to a Transfer Function (TF), which modifies in real-time the frequency spectrum of the audio signal from the TV station before the transmission to the broadcasting tower. In this way, the final users receive the processed audio signal without the need of additional hardware. A Digital Audio Optimizer dynamically equalizes the sound level, boosting the audio signal towards a flat frequency response without any increase in the loudness levels. Given that the majority of the broadcasted audio signals have speech or singing contents, the TF boosts the speech level in the frequency range that is more important for speech intelligibility, i.e., between 1 kHz and 4 kHz. Subjective evaluations of the proposed TF have been carried out in a laboratory in compliance with the standard ITU-R BS.1116. Three different commercial TV-set models, 30 audio excerpts from video tracks divided into the three genres Speech, Sing and Music, and Sport, and 72 subjects aged between 21 and 53 years, were part of the study. Overall, the perceived improvement in the audio quality compared to the non-processed signal was 25.3% on average among the three TV-set models and the three genres. In order to estimate the perceived improvement directly from the audio signal, regression analyses have been performed, which allow the estimation of subjective outcomes from objective indexes based on intensity features and frequency content of the signal, with standard errors between 10% and 14%. [ABSTRACT FROM AUTHOR]

Luminescent nanomaterials are used in everyday life due to their employment in distinct fields of science and technology, like cathode ray tubes (CRTs), flat panel display devices, temperature sensors, lasers, solar-cells, biological imaging, and solid-state lighting but also as carriers for miscellaneous therapeutic drugs. We have prepared dysprosium Dy3+ (0.5 mol %) doped lanthanum phosphate (LaPO4) phosphor by solid state reaction method. The excitation spectra of synthesized phosphor at 595 nm monitoring were composed of broadband and a series of sharp peaks, the strongest excitation peak at 254, 271, and 350 nm. The main emission spectra of samples under 254, 271, and 350 nm excitation are Dy3+ (0.5 mol %) doped LaPO4 phosphor observed at 477 and 573 nm corresponding to blue and yellow color. The broadband emission is the characteristic of the allowed f-h transition of Dy3+ ions. The corresponding emission band is observed due to the (blue emission) 4f9/2→6h15/2, (yellow emission) 4f9/2→6h13/2 transition of Dy3+ ions. All the samples have been characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and photoluminescence (PL) techniques. [ABSTRACT FROM AUTHOR]

Recently, collaborative representation classification (CRC) has attracted extensive interest for hyperspectral images (HSIs) classification. However, for collaborative representation with Tikhonov (CRT), a testing sample is collaboratively represented by training samples from all the classes, which may result in high computational cost. In this article, we select the first $k$ class training samples that are nearest to the testing sample for representation, namely, $k$ -nearest class CRT (KNCCRT) algorithm. In order to improve the performance of KNCCRT for HSI classification, the idea of random subspace-based KNCCRT ensemble framework is proposed. KNCCRT is adopted as base classifier and random subspace (RS) contributes to diversity by selecting feature randomly. Moreover, to further increase the classification accuracy, shape-adaptive (SA) neighborhood constraint is utilized in RS ensemble framework to incorporate spatial information. Experimental results on three real hyperspectral data sets demonstrate the effectiveness of the proposed methods for HSI classification. The combination of KNCCRT and RS framework provides a reliable accuracy for HSI classification. [ABSTRACT FROM AUTHOR]

We report on a new technique for obtaining off-Hugoniot pressure vs. density data for solid metals compressed to extreme pressure by a magnetically driven liner implosion on the Z-machine (Z) at Sandia National Laboratories. In our experiments, the liner comprises inner and outer metal tubes. The inner tube is composed of a sample material (e.g., Ta and Cu) whose compressed state is to be inferred. The outer tube is composed of Al and serves as the current carrying cathode. Another aluminum liner at much larger radius serves as the anode. A shaped current pulse quasi-isentropically compresses the sample as it implodes. The iterative method used to infer pressure vs. density requires two velocity measurements. Photonic Doppler velocimetry probes measure the implosion velocity of the free (inner) surface of the sample material and the explosion velocity of the anode free (outer) surface. These two velocities are used in conjunction with magnetohydrodynamic simulation and mathematical optimization to obtain the current driving the liner implosion, and to infer pressure and density in the sample through maximum compression. This new equation of state calibration technique is illustrated using a simulated experiment with a Cu sample. Monte Carlo uncertainty quantification of synthetic data establishes convergence criteria for experiments. Results are presented from experiments with Al/Ta, Al/Cu, and Al liners. Symmetric liner implosion with quasi-isentropic compression to peak pressure ~1000GPa is achieved in all cases. These experiments exhibit unexpectedly softer behavior above 200GPa, which we conjecture is related to differences in the actual and modeled properties of aluminum. [ABSTRACT FROM AUTHOR]

Technological innovation has transformed the role of electronics in education, work, and society. However, rapid adoption and obsolescence of consumer electronics has also led to new concerns about resource consumption and waste management. Past research to address these sustainability challenges has been constrained by data that do not reflect nascent trends in product evolution and consumer adoption, thereby limiting the ability to create and assess proactive solutions. This study presents a dynamic analysis of electronic waste (e‐waste) in the United States using material flow analysis and highly resolved electronic product sales and material composition data. Findings contradict expectations that e‐waste is growing with mobile device proliferation, instead showing that the total mass of the e‐waste stream is actually declining (10% decrease since the estimated peak in 2015) with phase‐out of large, legacy products like cathode ray tube TVs. The evolving material profile of consumer electronics being purchased and disposed sees reduced risks of e‐waste toxicity from hazards like lead and mercury, but greater risks from reliance on scarce metals and product designs that limit recycling. This study highlights concerns that extended producer responsibility regulations currently implemented in many U.S. states for e‐waste management may become less effective if they continue to rely only on mass‐based collection targets. This article met the requirements for a gold‐gold JIE data openness badge described at http://jie.click/badges. [ABSTRACT FROM AUTHOR]

Vacuum arc cathode spot motion was investigated on a "roof-shaped" aluminum cathode under an external magnetic field. The cathode included a flat roof-top and four sloped sides, inclined by an angle α. A high speed camera was used to observe cathode spot motion. The spot velocity on the slopes and the distribution of cathode spots on the roof and slopes was determined. It was obtained that under a magnetic field, the spot motion on the roof was slow (<1m/s) and mainly random, while on the slopes fast retrograde motion was observed. This velocity increased linearly with the magnetic field and decreased slightly with α. [ABSTRACT FROM AUTHOR]

The article presents a study on the occurrence of severe violations of independence assumptions at short stop-signal delay (SSD) in response inhibition tasks. It discusses the factors that modulate the violations, removal of short SSDs prone to violations, the variable potency of inhibition across SSDs, and the implications of the study for trigger failure models.

In this article, the effects of the O2 ratio on the electrical characteristics, including the I-V characteristic curve, Panchen’s curve, and I-P curve, were tested in a sample of O2/Ar gaseous mixture . The sample was produced by plasma-based DC magnetron sputtering with niobium metal as a target material. The inter-electrode spacing value was 4 cm. Plasma diagnosis via the Optical Emission Spectroscopy (OES) method was used to achieve Te and Ne mixture values of 20 %, 30 %, 50%, and 70% in the Ar/O2 system. The results showed that the discharge is operating in the abnormal glow region and the discharge current was decreased by increasing O2 percentage. In addition, the experimental results showed that the discharge is optimal at 30% gas ratio. It was found that the electron temperature was decreased with increasing working pressure and increased with increasing the O2 percentage, while electron density was increased with increasing both working gas pressure and O2 percentage. [ABSTRACT FROM AUTHOR]

In this study, a new lead (Pb) and chlorine (Cl) recovery process via the thermal co-treatment of Municipal solid waste (MSW) incineration fly ash (FA) and waste cathode-ray tubes (CRT) was developed and the synergistic effects under different CRT ratios, temperatures, and residence times were comprehensively investigated. Thermogravimetric experiments revealed that the co-processing of FA and CRT exhibited a remarkable synergistic effect as evidenced by the considerable increase in mass loss and mass-loss rate when compared with the theoretical values. When the mixtures with 50% CRT addition was treated at 1200 °C for 60 min, Pb removal rate reached the maximum value of 98.67%, and the Cl removal rate considerably increased by 37.32% compared to that with FA treatment alone. Additionally, the Cl content in the residue was < 2%. It was mainly attributed to the volatilization of chlorides, such as PbCl 2 , NaCl, and KCl. CaCl 2 generated from the decomposition of CaClOH in FA was conducive to improve Pb removal in CRT through indirect chlorination and destroying the glass structure in CRT. Co-processing of FA and CRT demonstrates promising potential for several benefits, including the reduction in melting temperature, recovery of Pb and Cl from secondary fly ash, and the reutilization of calcium-rich slag. [Display omitted] • Thermal co-treatment of FA and CRT to recover Pb and Cl from the ash was studied. • Adding CRT to FA increased the mass loss and mass loss rate at high temperature. • The addition of CRT reduced the ash fusion temperature. • The Pb and Cl removal rate considerably increased with the addition of 30–50% CRT. • CaCl 2 or CaClOH in FA was the main component to promote Pb volatilization in CRT. [ABSTRACT FROM AUTHOR]

• Extract the silicon and aluminum sources rich from stone sludge and CRT waste panel glass. • Surfactant (CTAB) is grafted on the mesoporous material to control the humidity. • Effectively synthesize low-cost and environmentally friendly mesoporous materials. There is a growing need for economical methods by which to reuse industrial waste. This paper reports on the recycling of industrial waste in the preparation of amine functionalized mesoporous molecular sieves (Al-MCM-41), for use as a building material applicable to the energy-free regulation of indoor humidity. The preparation of amine functionalized Al-MCM-41 for experiments involved combining stone sludge, cathode ray tube panel waste glass, an alkali agent (sodium hydroxide), and cetyltrimethylammonium bromide with aminopropyltriethoxysilane in various proportions. The water vapor adsorption of amine functionalized Al-MCM-41 (42.85 g/m2) far exceeded of amine functionalized Al-MCM-41 without surface grafting (28.64 g/m2). Al-MCM-41 with 2.5 vol% amine functional groups achieved the highest 24-h water vapor adsorption performance in compliance with JIS A 1470 standards. This research provides an economical approach to the recovery and recycling of industrial waste that is rich in silicon and aluminum. [ABSTRACT FROM AUTHOR]

In this study, waste cathode ray tube screen glass (WCSG) doped with Li 2 O and Y 2 O 3 was prepared and investigated for physical properties, structural definition, and their charged radiation and neutron shielding competence through a series of experimental and theoretical approaches. Using the cold isostatic press method, WCSG-infused Li 2 O + Y 2 O 3 composite glass ceramic samples were prepared. The Li 2 O + Y 2 O 3 composite concentrations were varied from 0 (STV), 10 (STV-YLI1), and 20 (STV-YLI2) wt%. The prepared glasses were sintered, and their crystal structure and surface microstructure were probed using the XRD technique and SEM images. The prepared samples were analysed for their radiation shielding abilities, starting from the computation of parameters related to their interaction with charged radiation and neutrons. The ESTAR, PSTAR, ASTAR, and STRIM software. In addition, the fast neutron (FN) removal cross section (FNRCS) and thermal neutron (TN) total cross-section (σ t o t) for the prepared glasses were evaluated theoretically using established models. The XRD spectra of the samples showed distinct crystalline structure and the formation of glass-ceramic material. The addition of the Li 2 O + Y 2 O 3 composite reduced surface pores, increased hardness, and increased the sample density. The Vickers hardness values were calculated as 495, 527, and 552 HV for the STV, STV-YLi1, and STV-YLi2 samples, respectively, while the corresponding densities were 2.506, 2.592, and 2.634 g/cm3. The addition of Li 2 O + Y 2 O 3 to the WCSG slightly improved the glass-ceramic system's charged particle shielding ability. The FNRCS of STV, STV-YLi1, and STV-YLi2 are 0.0775, 0.0827, and 0.0867 cm-1 respectively. The ability of the prepared glass ceramics to absorb fast and thermal neutrons improved with the addition of Li 2 O + Y 2 O 3. The materials are recommended for use as environmental friendly radiation shields. • TV screen waste glasses. • Recycling potential by Li 2 O and Y 2 O 3 addition. • Cold isostatic press method. • Promising uses in radiation applications. [ABSTRACT FROM AUTHOR]

Cathode ray tube (CRT) panel glass is processed into glass foams by using carbon and Mn 3 O 4 as foaming agents. We investigate the foaming ability and foaming mechanism of the mixture by varying the composition and the temperature. Carbon load of 5 wt% inhibits the sintering of the glass powder, while 2 wt% carbon promotes the coalescence of pores during foaming. Carbon load of ≤0.4 wt% is suitable for achieving low density foams (0.15–0.23 g cm-3) with closed pores (75–100%). Foaming is initiated by the reaction between carbon and Mn 3 O 4 and this is the main source of melt expansion. Reduction of cations in the glass melt, including Mn3+ dissolved from Mn 3 O 4 , makes an important contribution to the melt foaming at >800 °C. The main gaseous product is CO 2 (67–95 vol%). CO appears above 800 °C and the concentration increases with temperature. [ABSTRACT FROM AUTHOR]

Cylindrical reflex triodes (CRTs) driven by a pulsed power generator can produce relatively low-endpoint X-ray spectra (~250 keV) that can be suitable for certain radiation–matter interaction studies. CRTs have several advantages over other reflex triode configurations, the most significant being the ability to operate multiple concentric CRTs, connected either in parallel or in series. Such configurations can result in increased X-ray output without increasing the endpoint or changing the pulsed-power generator. This article describes results from, and modeling of, experiments employing a single CRT and two CRTs in a series configuration. The modeling includes an analytic, physics-based model of CRT electrical operation; measured and calculated radiation distributions and spectra; and predicted effects of several configuration variations. [ABSTRACT FROM AUTHOR]

The cathode ray tube (CRT) is a common and important tool that has been in use for decades, with which behavioral and visual neuroscientists deliver specific visual images generated by computers. Considering the operating principle of the CRT, the image it presents can flick at a constant rate, which will introduce distractions to the visual experiments on subjects with higher temporal resolutions. While this entrainment has been proved common in recordings of the primary visual cortex of mammals, it is uncertain whether it also exists in the intermediate to deep layers of pigeon's optic tectum, which is relevant to the spatial attention. Here, we present continuous visual stimuli with different refresh rates and luminances couples shown on a CRT to pigeons. The recordings in the intermediate to deep layers of optic tectum were significantly phase locking to the refresh of the CRT, and lower refresh rates of the CRT with higher brightness more likely introduced artifacts in electrophysiological recordings of pigeons, which may seriously damage their visual information perception. [ABSTRACT FROM AUTHOR]