gebhart/patrepeval huggingface dataset:
An Inductive and Capacitive Combined Wireless Power Transfer System With <italic>LC</italic>-Compensated Topology (2016)

This paper proposes a combined inductive and capacitive wireless power transfer (WPT) system with LC -compensated topology for electric vehicle charging application. The circuit topology is a combination of the LCC-compensated inductive power transfer (IPT) system and the LCLC-compensated capacitive power transfer (CPT) system. The working principle of the combined circuit topology is analyzed in detail, providing the relationship between the circuit parameters and the system power. The design of the inductive and capacitive coupling is implemented by the finite-element analysis. The equivalent circuit model of the coupling plates is derived. A 3.0-kW WPT system is designed and implemented as an example of combined inductive and capacitive coupling. The inductive coupler size is 300 mm × 300 mm and the capacitive coupler is 610 mm × 610 mm. The air-gap distance is 150 mm for both couplers. The output power of the combined system is the sum of the IPT and CPT system. The prototype has achieved 2.84-kW output power with 94.5% efficiency at 1-MHz switching frequency, and performs better under misalignment than the IPT System. This demonstrates that the inductive-capacitive combined WPT system is a potential solution to the electric vehicle charging application.
Memory Devices: Eliminating Negative‐SET Behavior by Suppressing Nanofilament Overgrowth in Cation‐Based Memory (Adv. Mater. 48/2016) (2016)

On page 10623, Q. Liu, M. Liu and co-workers have demonstrated that the negative-SET behavior, which can cause reset failure, is related to the conductive filament overgrowth phenomenon in cation-based resistive switching memory. In addition, they propose an effective solution (inserting an ion/atom-blocking layer, i.e. graphene) to eliminate the negative-SET phenomenon fundamentally. The fabricated graphene-based device shows good and stable resistive switching performances.
New sensors for new applications: force sensors for human/robot interaction (2003)

Conventional force sensors are overdesigned for use in measuring human force inputs, such as is needed in research and application of human/robot interaction. A new type of force sensor is introduced that is suited to human-robot interaction. This sensor is based on optoelectronic measurements rather than strain gauges. Criteria for material selection and dimensioning are given, and results for linearity, noise, and drift are reported.
Compositional redistribution during casting of Hg sub 0.8 Cd sub 0.2 Te alloys (1986)

A series of Hg(0.8)Cd(0.2)Te ingots was cast both vertically and horizontally under well-defined thermal conditions by using a two-zone furnace with isothermal heat-pipe liners. The main objective of the experiments was to establish correlations between casting parameters and compositional redistribution and to develop ground-based data for a proposed flight experiment of casting of Hg(1-x)Cd(x)Te alloys under reduced gravity conditions. The compositional variations along the axial and radial directions were determined by precision density measurements, infrared transmission spectra, and X-ray energy dispersion spectrometry. Comparison between the experimental results and a numerical simulation of the solidification process of Hg(0.8)Cd(0.2)Te is described.
Organic vapor jet printing at micrometer resolution using microfluidic nozzle arrays (2011)

Organic vapor jet printing with a print head comprised of a microfluidic Si nozzle array is used to deposit parallel lines of an organic semiconductor thin film with a line width of 16 μm and edge resolution of 4 μm. Line width and feature size are functions of process conditions, depending strongly on nozzle-to-substrate separation distance. Experimental results are accurately characterized by a direct simulation Monte Carlo model. The model suggests that feature sizes of &lt;1.5 μm are attainable by this printing process. The ability of the print head to codeposit doped films is demonstrated by growing the emissive layer of a green phosphorescent organic light emitting diode sandwiched between hole and electron transport layers deposited by vacuum thermal evaporation. This device had an external quantum efficiency of 8.8±1.3%, comparable to a similar device entirely grown by vacuum thermal evaporation.
Evidence of presentation of multiple HIV-1 cytotoxic T lymphocyte epitopes by HLA-B*3501 molecules that are associated with the accelerated progression of AIDS (1997)

We recently showed HLA-B35-restricted CTL activity for 10 HIV-1 epitopes in PBL from two HIV-1-infected individuals. In the present study, we established CTL clones specific for nine of these HIV-1 epitopes to confirm these HLA-B35-restricted epitopes. The specific CTL clones effectively killed the HLA-B*3501-positive target cells infected with the HIV-1 vaccinia recombinant virus. These results confirmed that nine HIV-1 CTL epitopes are presented by HLA-B*3501 molecules. The CTL activity specific for four Pol and two Nef epitopes was induced in the peptide-stimulated PBL from three or more of seven HIV-1-infected individuals, indicating that these six are common epitopes. Eight were considered strong epitopes because the specific CTL activity was detected in the cultured PBL that was once stimulated with peptides. Thus, the present study excluded the possibility that the disability of the presentation of HIV-1 epitopes by HLA-B35 molecules is associated with the accelerated progression of AIDS in HLA-B35-positive individuals. Analysis of mutated epitopes found in an HIV-1 type B strain using the CTL clones revealed that most mutated epitopes partially or markedly affect the recognition of CTL clones. Of 19 mutations that affected recognition of the CTL clones, 7 reduced peptide-HLA-B*3501 binding, while 12 affected TCR recognition. These results indicate that natural mutations of HLA-B35-restricted HIV-1 CTL epitopes affect the recognition of CTL by mechanisms that reduce both peptide binding and TCR recognition.
Josephson quantum interference computer devices (1977)

Josephson devices are potential elements for ultra-fast computers. Rather complex logic and memory circuits have been realized. Here quantum interference devices with improved speed and power performance are discussed. Latching and non-latching logic operation is possible and experiments with non-latching circuits are reviewed. Memory applications of quantum interference devices are also considered.
Improved capacitance ratio optimization methodology for stacked switched capacitor energy buffers (2015)

The recently proposed stacked switched capacitor (SSC) energy buffers with film or ceramic capacitors can increase the lifetime of single-phase ac/dc converters by eliminating the relatively short lifetime electrolytic capacitors used for twice-line-frequency energy buffering. This paper presents an improved methodology to minimize the passive volume of SSC energy buffers by optimally selecting their capacitance ratios while taking into account the variation in capacitor energy density with voltage rating. The proposed methodology is compared with the state-of-the-art approach for both unipolar and bipolar SSC energy buffers. It is shown that for designs with 10% voltage ripple, it reduces the passive volume by up to 43% depending on the capacitor technology and type of SSC energy buffer. The effectiveness of the proposed optimization methodology is validated using a prototype SSC energy buffer designed for an 8-W offline LED driver.
Magic state distillation at intermediate size (2018)

Recently [1] we proposed a family of magic state distillation protocols that obtains asymptotic performance that is conjectured to be optimal. This family depends upon several codes, called “inner codes” and “outer codes.” In Ref. [1], some small examples of these codes were given as well as an analysis of codes in the asymptotic limit. Here, we analyze such protocols in an intermediate size regime, using hundreds to thousands of qubits. We use BCH inner codes [2], combined with various outer codes. We extend the protocols of Ref. [1] by adding error correction in some cases. We present a variety of protocols in various input error regimes; in many cases these protocols require significantly fewer input magic states to obtain a given output error than previous protocols.
A contrast‐detail analysis of diagnostic ultrasound imaging (1982)

For diagnostic ultrasound imaging, as in computed tomography, a feature of prime importance is the detection of focal lesions of varying size and contrast (echo amplitude) from surrounding tissue. This study describes a new tissue-stimulating phantom which has been used to measure the threshold detection of varying contrast, simulated lesions. The phantom consists of a block of tissue-mimicking gelatin which contains a row of conical targets at a depth of 7 cm. Each cone contains a different tissue-mimicking material so that the echo amplitude of the cones relative to the background material covers a dynamic range of 20 dB. Cross-sectional B-scans, perpendicular to the lengths of the cones, result in images of disks of constant diameter but varying contrast. Parallel cross-sectional scans yield "lesions" varying in diameter from 20 to 1 mm. Relative contrast of the cones vs background tissue is obtained by varying scattering particle sizes from 90 to 300 microns. Ultrasound B-scans of the phantom were examined by medical physicist observers to determine threshold detection of lesions as a function of size and contrast. The results indicate that detection of high contrast targets is limited by the imaging system's spatial resolution. Detection of low contrast targets is limited by the image speckle, i.e., coherent noise.
Analysis of the output spectrum for direct digital frequency synthesizers in the presence of phase truncation and finite arithmetic precision (2001)

A simple algorithm is presented for the calculation of the output spectrum of direct digital frequency synthesizers (DDFS) in the presence of phase accumulator truncation and finite arithmetic precision. Using no approximations, a simple formula calculates the magnitudes of the spurious noise frequencies (spurs) due to phase accumulator truncation and due to finite precision implementation. Their spectral position is also determined by a simple expression. The derivation process itself provides strong insight into spur magnitude and spectral location, and it makes evident that the set of spurs due to phase word truncation and the set resulting from finite arithmetic precision are disjoint.
Long term outcomes of biomaterial-mediated repair of focal cartilage defects in a large animal model (2021)

The repair of focal cartilage defects remains one of the foremost issues in the field of orthopaedics. Chondral defects may arise from a variety of joint pathologies and left untreated, will likely progress to osteoarthritis. Current repair techniques, such as microfracture, result in short-term clinical improvements but have poor long-term outcomes. Emerging scaffold-based repair strategies have reported superior outcomes compared to microfracture and motivate the development of new biomaterials for this purpose. In this study, unique composite implants consisting of a base porous reinforcing component (woven poly(ε-caprolactone)) infiltrated with 1 of 2 hydrogels (self-assembling peptide or thermo-gelling hyaluronan) or bone marrow aspirate were evaluated. The objective was to evaluate cartilage repair with composite scaffold treatment compared to the current standard of care (microfracture) in a translationally relevant large animal model, the Yucatan minipig. While many cartilage-repair studies have shown some success in vivo, most are short term and not clinically relevant. Informed by promising 6-week findings, a 12-month study was carried out and those results are presented here. To aid in comparisons across platforms, several structural and functionally relevant outcome measures were performed. Despite positive early findings, the long-term results indicated less than optimal structural and mechanical results with respect to cartilage repair, with all treatment groups performing worse than the standard of care. This study is important in that it brings much needed attention to the importance of performing translationally relevant long-term studies in an appropriate animal model when developing new clinical cartilage repair approaches.
Definition and design of an experiment to test raster scanning with rotating unbalanced-mass devices on gimbaled payloads (1992)

An experiment designed to test the feasibility of using rotating unbalanced-mass (RUM) devices for line and raster scanning gimbaled payloads, while expending very little power is described. The experiment is configured for ground-based testing, but the scan concept is applicable to ground-based, balloon-borne, and space-based payloads, as well as free-flying spacecraft. The servos used in scanning are defined; the electronic hardware is specified; and a computer simulation model of the system is described. Simulation results are presented that predict system performance and verify the servo designs.
Low Corrosive Chemical Decontamination Method Using pH Control, (I) Basic System (2001)

A new low corrosive decontamination method was developed which uses both oxalic acid and hydrazine as the reducing agent and potassium permanganate as the oxidizing agent. Less corrosion of structural materials during the decontamination is realized by pH control of the reducing agent. The pH of 2.5, attained by adding hydrazine to oxalic acid, was the optimum pH for maintaining a high decontamination effect and lowering the corrosion at the same time. As this reducing agent can be decomposed into carbon dioxide, nitrogen and water by using a catalyst column with hydrogen peroxide, the amount of secondary radioactive waste is small. These good features were demonstrated through actual plant decontamination tasks.
Formaldehyde-free melamine microcapsules as core/shell delivery systems for encapsulation of volatile active ingredients (2017)

The release of volatile bioactive molecules, such as fragrances, can be controlled by microencapsulation in core–shell polymeric delivery systems.
Genetics of pertussis toxin (1989)

Pertussis toxin (PT) is the major virulence factor of Bordetella pertussis. The cloning and nucleotide sequencing of the PT genes from B. pertussis, Bordetella parapertussis and Bordetella bronchiseptica has elucidated the evolution of the Bordetella species and allowed considerable advances towards the understanding of their gene expression and the development of safer vaccines against pertussis.
Effect of an activating agent on the physicochemical properties and supercapacitor performance of naturally nitrogen-enriched carbon derived from Albizia procera leaves (2020)

The present study reports the preparation of naturally nitrogen-doped carbon nanostructured materials from Albizia procera leaves with enhanced electrochemical supercapacitance properties. The doped carbon materials were prepared by the pyrolysis of Albizia procera leaves at 850 °C. The effect of using various activating agents such as NaHCO3 and ZnCl2 was checked and compared on the structural and textural properties, specific capacitance, surface functional groups, and surface area. The Brunauer–Emmett–Teller (BET) analysis shows that NaHCO3-activated nitrogen-doped carbon (NaNC) has a higher specific surface area compare to ZnCl2-activated nitrogen-doped carbon (ZnNC) and nitrogen-doped carbon prepared without an activating agent (WANC). Overall, the BET and microscopic analyses confirmed that NaNC is composed of carbon nanosheets with macropores and mesopores, as well as a large number of micropores, which is completely different from the composition of ZnNC and WANC. In addition, the XPS analysis confirmed the existence of higher amount of nitrogen in NaNC compared to that of ZnNC, and WANC. NaNC exhibits a specific capacitance of 231 F g−1 at 1 A g−1 current with good energy and power densities, and an outstanding charging-discharging stability thanks to its unique features such as the existence of high amounts of nitrogen, high SSA, and the nanosheet-type morphology.
Chemically stable battery membrane (1988)

For batteries containing strong oxidizing electrolytes and a membrane separating two electrolyte solutions, e.g., a zinc/ferrocyanide battery, an improved oxidation-resistant, conductive, ion-selective membrane fabricated from an inert porous perfluorinated polymer sheet, e.g., of poly(tetrafluoroethylene), radiatively grafted with {proportional to}-methylstyrene and adequately sulfonated. A minor quantity of a divinyl compound is preferably added to the {proportional to}-methylstyrene to crosslink the grafted structure. 5 figs.
Single-antenna projection algorithm to discriminate super-imposed Secondary Surveillance Radar Mode S signals (2007)

This paper presents a novel, effective algorithm to discriminate and separate super-imposed SSR (Secondary Surveillance Radar) Mode S signals. Our goal is a blind separation of multiple SSR sources using a single channel receiver. Other algorithms perform sources separation exploiting space diversity or statistical properties, but with the practical inconvenience of the need for a multi-channel receiver. As today SSR stations are equipped with single-channel receivers (for Multilateration and Wide Area Multilateration applications, M-LAT, WAM) the proposed algorithm is aimed to be operationally useful.
Fast HEVC Intra Mode Decision Based on RDO Cost Prediction (2018)

High efficiency video coding (HEVC) increases the number of intra coding modes to 35 to provide higher coding efficiency than previous video coding standards. This results in an increased encoder complexity, since there are more modes to be processed by the high resource-demanding rate-distortion optimization (RDO). In this paper, we propose a novel method to reduce the HEVC intra mode decision computational complexity and encoding time. This method is based on the prediction of the RDO cost of intra modes from a low-complexity sum of absolute transformed differences-based cost. By predicting the RDO cost, we are able to exclude non-promising modes from further processing and thereby save substantial computations. Also, a gradient-based method, using the Prewitt operator, is proposed to eliminate the non-relevant directional modes from the list of candidates. For even more complexity reduction, a mode classification is proposed to adaptively reduce chroma intra modes based on block texture. Experimental results show that we achieve a 47.3% encoding time reduction on average with a negligible quality loss of 0.062 dB for the Bjøntegaard delta peak signal-to-noise ratio when we compare our method to the HEVC test model 15.0.
Influence of Electrolyte Composition on the Electrochemical Reaction Mechanism of Bismuth Fluoride Electrode in Fluoride Shuttle Battery (2019)

Fluoride shuttle battery (FSB) is a promising next-generation battery candidate. In the FSB, metal fluoride and organic solvent containing supporting electrolyte salt and anion acceptor were used as active material and electrolyte. In this study, using bis[2-(2-methoxyethoxy)ethyl] ether (tetraglyme: G4) containing cesium fluoride (CsF; 0.45 mol dm–3 or saturated) and triphenylboroxine (TPhBX; 0.50 mol dm–3) as electrolyte (CsF(0.45)–TPhBX(0.50)–G4 and CsF(sat.)–TPhBX(0.50)–G4), the electrochemical performance of bismuth fluoride (BiF3) was assessed. Although the discharge and charge reactions of BiF3 electrode proceeded in both electrolytes, the cycling performance of BiF3 electrode in CsF(0.45)–TPhBX(0.50)–G4 was poorer than that in CsF(sat.)–TPhBX(0.50)–G4. The cause of differences in the electrochemical properties was investigated using atomic absorption spectrometry (AAS), X-ray photoelectron spectroscopy (XPS), and cross-sectional scanning electron microscopy (SEM)/energy dispersive X-ray spectroscopy (EDX). The AAS results indicate that the poor cycling performance with CsF(0.45)–TPhBX(0.50)–G4 was due to the dissolution of active material during charging. The XPS and cross-sectional SEM/EDX results indicate that the formation state of Bi, and the progress of electrolyte decomposition during discharging were affected by the CsF/TPhBX ratio in the electrolyte.
A new method for measuring antioxidant activity (1993)

Conference Article| May 01 1993 A new method for measuring antioxidant activity NICHOLAS J. MILLER; NICHOLAS J. MILLER 1Free Radical Research Group, Division of Biochemistry, UMDS - Guy's Hospital, London SE1 9RT, UK Search for other works by this author on: This Site PubMed Google Scholar CATHERINE RICE-EVANS; CATHERINE RICE-EVANS 1Free Radical Research Group, Division of Biochemistry, UMDS - Guy's Hospital, London SE1 9RT, UK Search for other works by this author on: This Site PubMed Google Scholar MICHAEL J. DAVIES MICHAEL J. DAVIES *Department of Chemistry, University of York, York YO1 5DD, UK Search for other works by this author on: This Site PubMed Google Scholar Biochem Soc Trans (1993) 21 (2): 95S. https://doi.org/10.1042/bst021095s Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter LinkedIn Cite Icon Cite Get Permissions Citation NICHOLAS J. MILLER, CATHERINE RICE-EVANS, MICHAEL J. DAVIES; A new method for measuring antioxidant activity. Biochem Soc Trans 1 May 1993; 21 (2): 95S. doi: https://doi.org/10.1042/bst021095s Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsBiochemical Society Transactions Search Advanced Search This content is only available as a PDF. © 1993 Biochemical Society1993 Article PDF first page preview Close Modal You do not currently have access to this content.
Use of Lock-In Thermography for Non-Destructive 3D Defect Localization on System in Package and Stacked-Die Technology (2011)

Abstract With the growing variety, complexity and market share of 3D packaged devices, package level FA is also facing new challenges and higher demand. This paper presents Lock-In Thermography (LIT) for fully non-destructive 3D defect localization of electrical active defects. After a short introduction of the basic LIT theory, two slightly different approaches of LIT based 3D localization will be discussed based on two case studies. The first approach relies on package internal reference heat sources (e.g. I/O-diodes) on different die levels. The second approach makes use of calibrated 3D simulation software to yield the differentiation between die levels in 8 die µSD technology.
Association-based bilingual word alignment (2005)

Bilingual word alignment forms the foundation of current work on statistical machine translation. Standard word-alignment methods involve the use of probabilistic generative models that are complex to implement and slow to train. In this paper we show that it is possible to approach the alignment accuracy of the standard models using algorithms that are much faster, and in some ways simpler, based on basic word-association statistics.