gebhart/patrepeval huggingface dataset:
SCR-Front-End Regenerative CHB Drive with Improved Harmonic Profile (2022)

Cascaded H-bridge (CHB) motor drive is an attractive solution for high-power industrial motor drives due to its modularity and scalability. The existing phase-shifting transformer in the CHB drive can eliminate the low-order harmonics at the grid, which makes CHB drives outperform other MV topologies due to their “perfect” harmonic profile. However, in the applications where frequent braking or regenerative capability are required, the conventional CHB drives cannot be employed due to the diode-front-end (DFE) structure. To obtain the regeneration capability, several solutions based on IGBT active front-end rectifier (AFE) have been proposed to convert the regenerative power to grid in each CHB power cell. However, these IGBT-based methods in regenerative CHB drives introduce the extra switching sideband harmonics that cannot be effectively eliminated by the existing phase-shifting transformers. The advantage of the CHB drives is thus sacrificed. In this paper, a new solution is discussed by replacing the DFE rectifier with an SCR (Silicon-Controlled Rectifier)-Front-End rectifier/inverter in each power cell. Unlike the existing IGBT-based solutions, the harmonics generated by the SCR rectifier/inverter can be eliminated by the existing phase-shifting transformer. Thus, to comply with the grid harmonic standard IEEE std 519–2014, a small <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$L$</tex> <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</inf> filter between the grid and SCR rectifier/inverter is required in each power cell. To further remove the additional filters while complying with IEEE standards, in this paper, a new 54 pulse phase-shifting transformer is introduced for a seven-level CHB drive and studied with an improved harmonic profile. Finally, the proposed SCR-Front-End solution is validated on a seven-level CHB inverter in simulation. This method can be generalized for any n-level CHB motor drive.
Combined orthogonal and non-orthogonal light-sheet microscopy for omniscale 3D imaging (2020)

In recent years light-sheet microscopy has emerged as a powerful technique for fast volumetric imaging of live specimens [1]. In light-sheet microscopy, a thin “sheet” of light optically (rather than physically) sections a specimen, such that fluorescence is only excited within one “optical section”. By using weakly-focused illumination light, the sheet maintains its sectioning ability over hundreds of microns, enabling high-speed capture of 2D images. And by scanning the specimen (or light sheet) a 3D dataset is quickly generated [2]. In most systems, the illumination and collection objectives are oriented orthogonally, such that the light sheet is co-planar with the focal plane of the collection objective [3]. However, more recently a class of lightsheet microscopes which use a single objective for both illumination and collection have been proposed. These non-orthogonal designs, known as oblique-plane microscopy (OPM), swept-confocally aligned planar excitation (SCAPE), epi-illumination selective-plane illumination microscopy (eSPIM), and scanned oblique-plane illumination microscopy (SOPi), illuminate samples with a light sheet which is imaged in a non-orthogonal fashion, which is rectified at a tilted remote image focus [4-8]. While this non-orthogonal arrangement results in slightly worse imaging performance (compared to the orthogonal arrangement), the use of a single objective enables more convenient and less physically restricted imaging geometries. To date, these non-orthogonal light-sheet microscopes have primarily been explored for dynamic imaging of live specimens, and more recently water-based expanded tissues. Here we combine this non-orthogonal architecture with a more traditional orthogonal light-sheet microscope. The non-orthogonal optical path providing micron to sub-micron resolution, and the orthogonal system providing lower magnification mesoscale imaging. Combined, the single system is able to provide omniscale 3D imaging.
Antibody-based Fluorescence Polarization Assay to Screen Combinatorial Libraries for Sweet Taste Compounds (2001)

Technological advances in instrumentation, chemical synthesis methods, molecular biology and biochemistry have fueled the recent growth in high throughput screening. Assays are available in a vast range for formats, including fluorescence, luminescence, absorbance, and scintillation detection. Antibodies represent a powerful tool for novel compound discovery and their utility in this regard should not be underestimated. We have designed a fluorescence polarization immunoassay for the identification of novel sweeteners. The assay is based on monoclonal antibodies that bind superpotent sweet taste compounds and libraries of suitable test compounds can be rapidly screened using these antibodies as "artificial taste receptors."
Solution‐Processed All‐Oxide Transparent High‐Performance Transistors Fabricated by Spray‐Combustion Synthesis (2016)

Spray-combustion processed all-oxide thin film transistors (TFTs) integrating a high-quality ZrO2 or Al2O3 gate dielectric, a high-mobility indium zinc oxide or indium gallium zinc oxide semiconductor, and indium tin oxide electrodes are reported. High-quality porosity-free, well-defined layers with uniform thickness across the transparent TFT stacks ensure good gate modulation, low operating voltages, high carrier mobilities, good on/off current ratio, and excellent reliability. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
Carbon nanotube induced enhancement of electroluminescence of phosphor (2009)

Electroluminescence (EL) was observed on conventional cathodoluminescent (CL) phosphor with the incorporation of carbon nanotube (CNT) at ambient air. The role of CNT can be understood as enhancing the local electrical field, which allows electron injection to the active center of phosphor at relatively low operating voltages. In this EL device, the brightness of CL phosphor was significantly improved from no light emission in the case of no addition of CNT to 35 cd/m2 with 1 wt % CNT at 10 kHz of ac 300 V.
Electron Microscopy and EDS of Nanoparticles Generated During Friction Stir Welding (2009)

Extended abstract of a paper presented at Microscopy and Microanalysis 2009 in Richmond, Virginia, USA, July 26 – July 30, 2009
An Optimized Network Selection and Handover Triggering Scheme for Heterogeneous Self‐Organized Wireless Networks (2014)

Optimizing the balance between different handover parameters for network selection is one of the challenging tasks for seamless communication in heterogeneous networks. Traditional approaches for network selection are mostly based on the Receive Signal Strength (RSS) from the Point of Attachment (PoA) of a network. Most of these schemes are suffered from high handover delay, false handover indications, and inappropriate network selection for handover. To address these problems, we present an optimized network selection scheme based on the speed of a mobile node. A mechanism based on two different thresholds on the speed of a Mobile Node (MN) is integrated in the proposed scheme. If the speed of an MN is greater than any of the threshold, the MN performs handover to a particular network. We employ Grey Relational Analysis (GRA) in the proposed scheme to select the best PoA of the selected network. Similarly, to deal with false handover indications, we proposed an optimized handover triggering technique. We compare our proposed scheme with existing schemes in context of energy consumption for scanning, frequent and failed handovers, packet loss ratio, and handover delay. The proposed scheme shows superior performance and it outperforms existing schemes used for similar purpose. Moreover, simulation results show the accuracy and performance of the proposed scheme.
Nd:YAG loop resonator with a Cr/sup 4+/:YAG self-pumped phase-conjugate mirror (2005)

We demonstrate a Nd:YAG loop resonator with a self-pumped phase conjugate, mirror in a Cr/sup 4+/:YAG crystal, in the nanosecond regime. A maximum extraction of 29 mJ and a maximum reflectivity of 3.3 are obtained. The output beam is a high-quality diffraction-limited TEM/sub 00/ mode and has a pulse shape of /spl sim/20-ns duration, showing the self Q-switching ability of the resonator. In addition, we demonstrate an original and specific configuration of the anisotropic Cr/sup 4+/:YAG crystal that compensates not only for phase aberrations but also for polarization aberrations induced into the loop resonator.
Targeted Sequencing of Genomic Repeat Regions Detects Circulating Cell-free Echinococcus DNA (2020)

This study provides evidence that hydatid cysts release cfDNA fragments into patient plasma. Using the repeat region targeted sequencing method, highly specific detection of Echinococcus infection was achieved. This study paves a new avenue for potential non-invasive screening and diagnosis of echinococcosis.
The Use of Directional Sound to Improve the Safety of Auditory Warnings (2000)

We all recognise the siren of an emergency vehicle, but none of us is able to tell which direction it is coming from. We can identify “what” but not “where”. This is due to the narrowband nature of traditional sirens which, due to the paucity of frequencies utilised, make it impossible for the brain to compute the location of the approaching emergency vehicle. Trials of a new siren sound which comprises broadband noise have shown that roadusers react positively to the new sound, resulting in journey times reduced by up to 10%. The Localizer™ is thus safer for roadusers and emergency service personnel.
Strain anisotropy and shear strength of shock compressed tantalum from in-situ Laue diffraction (2014)

Laser driven shock experiments were performed at the Omega facility to study the dynamic yield strength of ~5 μm thick single crystal tantalum using in-situ Laue diffraction. Tantalum samples were shocked along the [001] direction to peak stresses up to 50 GPa and probed using a 150 ps pulse of bremsstrahlung radiation from an imploding CH capsule x-ray source timed for when the shock was halfway through the sample. The capsule implosion was monitored by a combination of pinhole cameras and DANTE x-ray diode scopes. Diffraction spots for both the undriven and driven regions of the sample were recorded simultaneously on image plate detectors. The strain state of the material was found by combining the strain anisotropy found from the driven diffraction pattern and with simultaneous VISAR measurements.
Screening of a library of hemisalen ligands in asymmetric H-transfer: Reduction of aromatic ketones in water (2014)

A library of chiral hemisalen ligands ( 30 ) was realized. The ligands were synthesized by the condensation of salicylaldehyde derivatives with amino-alcohols (amino-indanol or substituted amino-ethanol) and characterized. These ligands associated with ruthenium (II) precursors were tested on the asymmetric transfer hydrogenation (ATH) of aromatic ketones by sodium formate in water. The different substituent pattern on the ligand (electronic and hindrance effects on different positions) as well as the ruthenium precursor were investigated. The best compromise in terms of conversion and chiral induction led to the complex [RuCl 2 ( mesitylene )] 2 coordinated to ( 1S,2R )-1-((E)-(3-(dimethyl(phenyl)silyl)-2-hydroxy-5-methoxy benzylidene) amino)-2,3-dihydro-1 H -inden-2-ol ( L25 ). It reduces acetophenone in 95% yield and 91% ee in 18 h at 30 °C.
Adenovirus and “Culture-Negative Sepsis” in a Preterm Neonate (2016)

<b>Background</b> Respiratory viral infections remain an underrecognized cause of morbidity and mortality among preterm infants in the neonatal intensive care unit (NICU). <b>Case Report</b> An eight day old, 650 gram birth weight, 23 weeks' gestational age female developed "culture-negative" sepsis manifested by respiratory deterioration, hypoxia, leukocytosis, and thrombocytopenia. She was diagnosed with pneumonia and hepatitis due to adenovirus HAdV-D (H29F9) by polymerase chain reaction (PCR) testing, but died at the age of 18 days despite treatment with cidofovir and immune globulin intravenous. <b>Conclusion</b> As the ability to diagnosis respiratory viral infections in the NICU has improved greatly with the use of PCR testing, the impact and contribution of these viruses to neonatal disease is now being recognized and the notion of "culture-negative" sepsis needs reassessment. The diagnosis of these infections in high risk infants is important not only for etiologic and epidemiologic reasons but ultimately for informing antimicrobial stewardship efforts.
An ace model for SARS-CoV-2 infection (2020)

Developing effective in vivo models for SARS-CoV-2 infection is crucial for mechanistic studies of COVID-19 disease progression. In this issue of JEM, Israelow et al. (https://doi.org/10.1084/jem.20201241) generate a model that supports SARS-CoV-2 infection in mice, which they use to characterize type I IFN-driven pulmonary inflammation.
A class of wavelet kernels associated with wave propagation (2002)

Wavelet kernels in the form of complex exponentials with linear instantaneous frequencies are discussed. These wavelets do not satisfy the commonly used admissibility condition; furthermore, they are neither band-, nor space-limited functions and they are not absolutely integrable. It is shown, however, that the wavelet transforms using these kernels are still invertable and the inversion formulas are given. Such kernels are closely related to wave propagation related phenomena like the diffraction and the holography, and therefore, the obtained mathematical results coincide to well known optical applications. The kernels may be useful in space-depth analysis of data obtained from diffraction related imaging techniques.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
New Insights in the Production of Simulated Moon Agglutinates: the Use of Natural Zeolite-Bearing Rocks (2021)

Two natural zeolite-bearing rocks (one containing clinoptilolite and the other chabazite, phillipsite, and analcime) were Fe-exchanged and thermally treated in a reducing atmosphere at 750 °C for 2 h. Two nanocomposites, formed by the dispersion of Fe nanoparticles in a ceramic matrix, were obtained. The prepared lunar dust simulants also contain Na+, K+, Ca2+, and Mg2+ and other mineral phases originally present in the starting materials. The samples were fully characterized by different techniques such as atomic absorption spectrometry, X-ray powder diffraction, followed by Rietveld analysis, transmission electron microscopy, N2 adsorption/desorption analysis at 77 K, measurements of grain size distribution, magnetic property measurements, broad-band dielectric spectroscopy, and DC conductivity measurements. The results of this characterization showed that the obtained metal–ceramic nanocomposites exhibit a chemical and mineralogical composition and electrical and magnetic properties similar to real moon dust and, thus, appear valid moon dust simulants.
The graft‐versus‐neuroblastoma effect of allogeneic hematopoietic stem cell transplantation, a review of clinical and experimental evidence and a perspective on mechanisms (2014)

Despite aggressive treatment, patients with high-risk neuroblastoma face high relapse rates and bleak prognoses. Increasing evidence that neuroblastoma cells are or can become immunogenic has stimulated research into novel therapies based on triggering or enhancing tumor immunity. Here we review clinical and experimental studies on this subject, the underlying immune mechanisms and perspectives for clinical application. Allogeneic hematopoietic stem cell transplantation has proven to be of substantial benefit in the treatment of certain leukemias through the generation of a graft-versus-leukemia-effect and has become of interest as a possible treatment for patients with solid tumors, including neuroblastoma.
Une maison sans passé n’a pas d’avenir. Entretien avec Tamara Préaud, archiviste honoraire de la manufacture de Sèvres (1969 - 2009) (2022)

Lajoix Anne. Une maison sans passé n’a pas d’avenir. Entretien avec Tamara Préaud, archiviste honoraire de la manufacture de Sèvres (1969 - 2009). In: Sèvres. Revue de la Société des Amis du musée national de Céramique, n°31, 2022. pp. 152-157.
2019 Thirteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials) (2019)

Resonators composed of two mirrors, such as Fabry-Perot cavities, provide a simple but effective approach to achieve wave transmission with high finesse. Further increase of the quality factor requires reflectors with higher conductivity or multi-mirror solutions. However, the analytical complexity of resonators with more than two mirrors prevents the design of optimal structures without recurring to numerical methods. This work considers an alternative approach to this problem by using cavities which do not produce any electromagnetic scattering. We demonstrate that these invisible cavities can be placed inside one another, resulting in a `matryoshka-doll'-like resonator. The standing-wave distribution of the inner resonator can be controlled without disturbing that of the outer one, whereas the whole system remains non-scattering.
Arrangement and Decomposition of Grain Boundary Dislocations: Two-Mode Phase-Field Crystal Simulation (2022)

The grain-boundary dislocation arrangement and decomposition during constant-volume deformation of a nanoscale bi-crystal system in fcc-structured materials were studied by using the two-mode phase-field crystal (2PFC) method. The effects of different grain boundary misorientations (GBMs) and tensile deformation directions on the dislocation arrangement and decomposition are analyzed. In three different symmetrical tilt grain boundaries evaluated by PFC, the atomic density profile of grain boundaries changed periodically at equilibrium. The initial grain boundary dislocation arrangement of the three samples is almost the same when tensile deformation is applied to the samples in the x - or y - direction, and all are symmetrically arranged in a “bowknot ”structure. The stress at the grain boundary is concentrated with the increase of strain, and dislocation decomposition can effectively reduce the stress concentration. The time steps of dislocation decomposition at grain boundaries decreases with increasing strain rate. This work facilitates the application of PFC in the analysis of grain-boundary mechanics in an extended range of materials.
ALLOGRAFT VEIN PATENCY IN A CANINE MODEL (1991)

Autogenous saphenous vein is the preferred conduit for many cardiovascular operations. Attempts to use allograft veins for arterial reconstruction have had poor results. To define circumstances under which allograft veins might prove to be acceptable vascular conduits, dogs underwent femoral artery bypass using reversed saphenous veins. Veins were transplanted fresh or after cryopreservation. Group I dogs received a fresh autograft to replace one femoral artery (group I F) and a cryopreserved (CP) autograft (group I C) to replace the other. Group II dogs received fresh allograft veins, and group III received CP allograft veins, neither group receiving additional treatment. Group IV received fresh allograft veins and Group V received CP allograft veins; both groups received cyclosporine 15 mg/kg. Animals were maintained until grafts occluded or until six months elapsed. Patency was observed in all group I F grafts throughout the observation period. Six-month patency rates in the other groups were: group I C, 9/10 (P = NS vs. group I F); group II, 0/10 (P less than 0.01), group III, 0/10 (P less than 0.01), group IV, 1/10 (P less than 0.01), group V, 7/11 (P = NS). In a separate series of observations 10 cryopreserved allograft veins were implanted in 10 dogs that received CsA for 30 days. CsA was then discontinued. All of these grafts occluded within 30 days of discontinuing the CsA. Long-term patency of saphenous vein allografts was achieved only with the combination of cryopreservation and immunosuppression with continued CsA.
Reduced graphene oxide integrated poly(ionic liquid) functionalized nano-fibrillated cellulose composite paper with improved toughness, ductility and hydrophobicity (2021)

Reduced graphene oxide/poly (ionic liquid) functionalized nano-fibrillated cellulose composite paper with significant enhancement of mechanical strength, ductility, toughness and hydrophobicity was fabricated by vacuum filtration assisted assembly.
Oxidative Polymerization of Dopamine: A High-Definition Multifunctional Coatings for Electrospun Nanofibers - An Overview (2018)

The invention that catecholamines undergo oxidative polymerization under alkaline conditions and form adhesive nanocoatings on wide variety of substrates has ushered their potential utility in engineering and biomedical applications. The oxidative polymerization of catecholamines can be triggered by light, chemical and physical methods, thus representing one of the widely explored surface coating methods. The overall objectives of this chapter are to compile the various methods of accomplishing surface coatings and compare the structural diversity of catecholamines. The progress achieved so far on polydopamine (pDA) coatings on electrospun polymers will be discussed. Finally, we will summarize the research efforts on catecholamine coatings for biomedical applications as well as their potential as a high definition coating method.
High ferroelectric polarization in c-oriented BaTiO3 epitaxial thin films on SrTiO3/Si(001) (2016)

The integration of epitaxial BaTiO3 films on silicon, combining c-orientation, surface flatness, and high ferroelectric polarization is of main interest towards its use in memory devices. This combination of properties has been only achieved so far by using yttria-stabilized zirconia buffer layers. Here, the all-perovskite BaTiO3/LaNiO3/SrTiO3 heterostructure is grown monolithically on Si(001). The BaTiO3 films are epitaxial and c-oriented and present low surface roughness and high remnant ferroelectric polarization around 6 μC/cm2. This result paves the way towards the fabrication of lead-free BaTiO3 ferroelectric memories on silicon platforms.
Constrained iterative restoration algorithms (1981)

This paper describes a rather broad class of iterative signal restoration techniques which can be applied to remove the effects of many different types of distortions. These techniques also allow for the incorporation of prior knowledge of the signal in terms of the specification of a constraint operator. Conditions for convergence of the iteration under various combinations of distortions and constraints are explored. Particular attention is given to the use of iterative restoration techniques for constrained deconvolution, when the distortion band-limits the signal and spectral extrapolation must be performed. It is shown that by predistorting the signal (and later removing this predistortion) it is possible to achieve spectral extrapolation, to broaden the class of signals for which these algorithms achieve convergence, and to improve their performance in the presence of broad-band noise.