gebhart/patrepeval huggingface dataset:
High Voltage Solar Array Development for Space and Thruster-Plume Plasma Environments (2022)

High-power solar arrays are in development by the National Aeronautics and Space Administration (NASA) for near-term high-power solar electric propulsion (SEP) missions. These high-voltage (HV) solar arrays use deployable flexible blanket configurations and need to be able to operate in the plasma environment of high-power Hall thrusters operating at tens of kilowatts of power. Array voltages of 300–800 V are desired both to minimize the copper bus mass in the system and to potentially operate the SEP Hall thrusters directly at high specific impulse without an in- series power processing unit. Coupons with multiple strings of solar cells (SCs) have been tested to high positive and negative biases in a plasma environment representative of the edge of Hall thruster plumes. Proper encapsulation of the exposed metals and triple points is required to avoid excessive current collection and arc initiation. Fully encapsulated test coupons have been successfully been tested at highest anticipated thruster plume plasma densities at voltages from 600 to 1000 V, which enables both very high power arrays and direct drive configurations for SEP missions.
Ultra-high temperature fiber optical chemical sensors based on nano-porous metal oxides (2015)

This paper presents fiber optical gas sensors based on nano-porous metal oxide functional materials for high-temperature energy applications. A solution-based approach was used to produce nano-porous functional metal oxide and their dopant variants as sensing films, which was integrated on high-temperature stable FBGs in D-shaped silica fibers and sapphire fibers. The Bragg grating peaks were used to monitor the refractive index change and optical absorption loss due to the redox reaction between Pd-doped TiO<sub>2</sub> and hydrogen from the room temperature to 800&deg;C. The experimental results show the sensor's response is reversible for hydrogen concentration between 0.1 vol.% to 5 vol. %. The response time of the hydrogen sensor is &lt;8s.
A Potentially Serious Default in Reverse Shoulder Surgery (2008)

Implant failure is a serious complication in reverse shoulder arthroplasty. We determined the incidence of glenosphere disengagement in a cohort of 479 reverse shoulder prostheses (468 Delta III TM (DePuy International Ltd, Leeds, UK), 11 Aequalis TM (Tornier, Grenoble, France)). We also determined whether disengagement adversely affected clinical outcomes. The minimum followup was 12 months (mean, 28.6 months; range, 12-72 months). Disengagement of the glenosphere occur- red in 16 of 479 shoulders (3.2%). In 13 patients, the disengagement was partial (clear step-off between the baseplate and the glenosphere) and was not associated with a poor functional outcome with this short-term followup. In three patients, the disengagement led to a fracture of the central screw, leading to a complete disengagement of the glenosphere from the baseplate, necessitating revision in two; the third refused revision. Partial disengagement was seen in five of 11 Aequalis TM prostheses (45.4%) and eight of 468 Delta III TM prostheses (1.7%). The three total dis- engagements with central screw breakage all occurred in Delta III TM prostheses. We believe differences in the type of locking screws may explain the differences observed between the two types of reverse prostheses. Level of Evidence: Level III, retrospective study. See the Guidelines for Authors for a complete description of levels of evidence.
Spread spectrum time-domain reflectometry for detecting and locating capacitive impedances (2019)

This paper describes new algorithms for spread spectrum time domain reflectometry (SSTDR) for detecting and locating faults in photovoltaic (PV) panels. Specifically, we present a new method for identifying the impedance of multiple loads (such as PV panels) on a single transmission line. This method is based on adapting a well-known algorithm, known as orthogonal matching pursuit, to match simulated waveforms with multiple reflections in an SSTDR waveform. We demonstrate that our method successfully extracts waveform data from the SSTDR experiments and correctly estimates load impedances corresponding to reflections in this waveform data. We experimentally demonstrate that our method correctly estimates the capacitance values of various capacitive loads on a transmission line with an error as low as4%.
Just ASK: Building an Architecture for Extensible Self-Service Spoken Language Understanding (2017)

This paper presents the design of the machine learning architecture that underlies the Alexa Skills Kit (ASK) a large scale Spoken Language Understanding (SLU) Software Development Kit (SDK) that enables developers to extend the capabilities of Amazon's virtual assistant, Alexa. At Amazon, the infrastructure powers over 25,000 skills deployed through the ASK, as well as AWS's Amazon Lex SLU Service. The ASK emphasizes flexibility, predictability and a rapid iteration cycle for third party developers. It imposes inductive biases that allow it to learn robust SLU models from extremely small and sparse datasets and, in doing so, removes significant barriers to entry for software developers and dialogue systems researchers.
SNR‐weighted regularization of ADC estimates from double‐echo in steady‐state (DESS) (2018)

A linear approximation of a simplified model of the relationship between DESS signals allows for fast SNR-weighted regularization of ADC maps that reduces estimation error in relatively short T<sub>2</sub> tissue such as cartilage.
Edge termination effects on finite aperture polarizers for polarimetric imaging applications at mid wave IR (2006)

Polarimetric imaging applications at the 2 to 5 μm or Mid-Wave Infrared (MWIR) range use large pixel-count focal plane arrays (FPA) with small pixel size. This project is centered in designing, fabricating and testing micropolarizers that work in that wavelength regime and intended for that type of FPAs. The micro-polarizers will be used in conjunction with a FPA in snapshot mode and will be in the near field of the imaging device. The pixel pitches for some commercial FPAs are small enough that the finite apertures of the polarizing devices may significantly affect their performance given that their aperture size varies between 3 and 5 waves. We are interested in understanding the effect on extinction ratio due to variations in the edge terminations of a polarizer with a small aperture. Edge terminations are the spaces between the first or last wire with the perimeter of the aperture of the polarizer. While this parameter has negligible effects on a larger polarizer, it will be significant for apertures that are about 3 to 5 waves. We will present data that indicates significant variation in performance due to edge terminations.
Spatially resolved lipidome profiling of freshwater sentinel species Gammarus fossarum by shotgun lipidomics and mass spectrometry imaging (2020)

International audience
Enhanced T helper 1 (Th1) responses with Fluzone® adjuvanted with a synthetic TLR4 agonist in an emulsion (45.15) (2009)

Abstract Impairments in anti-influenza Th1 responses are associated with the significantly greater risk of influenza related mortality in the elderly population. Developing appropriate adjuvants for seasonal influenza vaccines could therefore improve protection against influenza in the elderly. In this study we compare the activity of three different adjuvants, an oil-in-water emulsion and a synthetic lipid A adjuvant formulated with or without an emulsion, to enhance the immunogenicity of the Fluzone influenza vaccine. Fluzone combined with lipid A plus an emulsion was the most effective vaccine tested in mice, which induced greater vaccine-specific IgG2a and IgG titers, enhanced HI titers and the production of Th1-mediated cytokine responses (IFN-γ and IL-2) to each of the Fluzone components. In contrast, while the Fluzone vaccine plus the emulsion induced good antibody responses and HI titers to all of the vaccine components following a boost, a Th2-mediated cytokine response (IL-5) and IL-10 was induced. We demonstrate that in addition to antibody responses, cytokine responses may also be needed for evaluation and characterization of new adjuvants formulations for influenza vaccines. This work was supported in part by Grant #42387 from the Bill &amp; Melinda Gates Foundation
Polypeptides having endoglucanse activity and polynucleotides encoding same (2023)

The present invention relates to isolated polypeptides having endoglucanase activity and polynucleotides encoding the polypeptides. The invention also relates to nucleic acid constructs, vectors, and host cells comprising the polynucleotides as well as methods of producing and using the polypeptides.
Synthesis of terminally aluminum-functionalized polypropylene (1992)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of terminally aluminum-functionalized polypropyleneTakeshi Shiono and Kazuo SogaCite this: Macromolecules 1992, 25, 13, 3356–3361Publication Date (Print):June 1, 1992Publication History Published online1 May 2002Published inissue 1 June 1992https://doi.org/10.1021/ma00039a006Request reuse permissionsArticle Views307Altmetric-Citations49LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (601 KB) Get e-Alertsclose Get e-Alerts
Dual Symbol Rate for Geran Uplink Evolution (2006)

In this paper the dual symbol rate (DSR) concept is proposed for GERAN networks. DSR doubles the modulation rate and user bit rate per radio time slot. Basic assumption is that the transmit signal of adjacent channels overlap in frequency domain. Interference rejection combining algorithms (IRC) are used to combat the introduced interference. Analysis of theoretical channel capacity suggests that data rates can be improved either by increasing the number of antennas or frequency bandwidth in the used radio links. Simulation results are given to demonstrate possible DSR deployment to the existing networks. Spectral efficiency, coverage and user bit rates are shown to be significantly improved
Swath-ms: a new data independent acquisition LC-MS methodology for quantitative complete proteome analysis (2011)

The analysis of biomolecules in complex sample mixtures has relied for many years on LC-MS. In proteomics selected reaction monitoring (SRM) is a particularly attractive technique in cases in which reproducible data sets with high quantitative accuracy and wide dynamic range are required [1,2]. Despite the advances of SRM, the method presents certain limitations: the method requires a preliminary selection of reactions, and allows monitoring of a limited number of analytes per run.
Spin Dynamics in Patterned Magnetic Multilayers with Perpendicular Magnetic Anisotropy (2022)

The magnetization dynamics in nanostructures has been extensively studied in the last decades, and nanomagnetism has evolved significantly over that time, discovering new effects, developing numerous applications, and identifying promising new directions. This includes magnonics, an emerging research field oriented on the study of spin-wave dynamics and their applications. In this context, thin ferromagnetic films with perpendicular magnetic anisotropy (PMA) offer interesting opportunities to study spin waves, in particular, due to out-of-plane magnetization in remanence or at relatively weak external magnetic fields. This is the only magnetization configuration offering isotropic in-plane spin-wave propagation within the sample plane, the forward volume magnetostatic spin-wave geometry. The isotropic dispersion relation is highly important in designing signal-processing devices, offering superior prospects for direct replicating various concepts from photonics into magnonics. Analogous to photonic or phononic crystals, which are the building blocks of optoelectronics and phononics, magnonic crystals are considered as key components in magnonics applications. Arrays of nanodots and structured ferromagnetic thin films with a periodic array of holes, popularly known as antidot lattices based on PMA multilayers have been recently studied. Novel magnonic properties related to propagating spin-wave modes, exploitation of the band gaps, and confined modes, were demonstrated. Also, the existence of nontrivial magnonic band topologies has been shown. Moreover, the combination of PMA and Dzyaloshinskii-Moriya interaction leads to the formation of chiral magnetization states, including Néel domain walls, skyrmions, and skyrmionium states.
Quantum Size Effects in Amorphous Diamond-like Carbon Superlattices (1994)

Evidence for the existence of quantum size effects in amorphous diamond-like carbon superlattice structures from optical and electronic measurements together with theoretical predictions are reported. A `blue shift' in the optical gap is shown to occur with decreasing well width from which an effective mass for the electrons (and holes) is obtained. Regions of negative differential resistance are observed in the current-voltage characteristics at temperatures ranging from 4–300 K. Dark conductivity studies point to a current that is dominated by a tunnelling component rather than thermal carrier emission over the barrier layers of the superlattice. Activation energy studies show an increase in the activation energy with decreasing well width, in keeping with the observed optical `blue shift'. The voltage range over which negative differential resistance is measured agrees well with resonant tunnelling predictions.
Insights from brands in Facebook (2014)

Companies are increasingly turning to social media as a way to engage with their customers and to promote their brand and products. We analyzed the content of Facebook fan pages of the top 100 brands to gain insight into how companies utilize social media. These brands span 14 different categories from fashion and apparel to computer hardware. We find that different brands use different types of posts and get varying levels of engagement from users based on their business category. Interestingly, 45.53% of posts contained a reference to a company or a person with many of the companies referencing others.
Conservation Analysis of Rat and Human SP-A Gene Identifies 5′ Flanking Sequences of Rat SP-A that Bind Rat Lung Nuclear Proteins (1993)

As an initial step toward understanding regulation of tissue-specific expression of SP-A, 5' flanking sequences of the rat SP-A gene and human SP-A I gene were cloned, sequenced, and compared using dot matrix analysis. Two regions were identified, each with a considerable degree of homology between the two species. One region was proximal to the TATAA box, at position -225/-17 in rats and -226/-36 in humans, and the other at position -1115/-1026 in rats and -938/-851 in humans. Studies in rats revealed the specific binding of rat lung nuclear proteins to each of the conserved 5' flanking regions identified in rat SP-A. Binding studies using the rat proximal (rPPS) or distal (rDPS) promoter segments, or overlapping fragments of these segments, with rat nuclear extracts detected the presence of a number (1-4) of lung-specific DNA/protein complexes. When nuclear proteins from liver, a nonexpressing tissue, were used the binding profile of certain nuclear proteins differed from that of the lung. These studies, taken together, suggest that sequences within identified conserved DNA segments in the 5' flanking region of the rat SP-A gene contribute to its tissue-specific expression in rats.
An application of number theory to the organization of raster-graphics memory (1982)

A high-resolution raster-graphics display is usually combined with processing power and a memory organization that facilitates basic graphics operations. For many applications, including interactive text processing, the ability to quickly move or copy small rectangles of pixels is essential. This paper proposes a novel organization of raster-graphics memory that permits all small rectangles to be moved efficiently. The memory organization is based on a doubly periodic assignment of pixels to M memory chips according to a Fibonacci lattice. The memory organization guarantees that if a rectilinearly oriented rectangle contains fewer than M/√5 pixels, then all pixels will reside in different memory chips, and thus can be accessed simultaneously. We also define a continuous amdogue of the problem which can be posed as, What is the maximum density of a set of points in the plane such that no two points are contained in the interior of a rectilinearly oriented rectangle of area N. We give a lower bound of 1/2N on the density of such a set, and show that 1/√5N can be achieved.
Alternately double‐sided growth of low‐curvature GaN templates on sapphire substrates using hydride vapor phase epitaxy (2016)

GaN layers have been grown on double‐side‐polished sapphire substrates using hydride vapor phase epitaxy. The GaN layers on each side of the substrate were alternately grown using a new susceptor with a rotating mechanism. Although a conventional GaN layer grown on one side of a sapphire substrate exhibits a small radius of curvature, the alternately double‐sided‐grown GaN template exhibits a large radius of curvature. The radius of curvature of the alternately double‐sided‐grown GaN template with a thickness of 180 μm was found to be approximately 16.4 m, and was larger than the 0.5 m radius of curvature of the conventional GaN template.
A 65nm CMOS fully integrated 31.5 dBm triple SFDS Power Amplifier dedicated to W-CDMA application (2010)

This paper presents a 65nm CMOS-Power Amplifier (PA) designed for UMTS standard. It is based on a triple Stacked Folded pseudo-Differential Structure (triple SFDS) power stage and a differential cascode driver stage. The PA provides 31.5 dBm maximal output power (P <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">max</sub> ) with 20% of maximal power added efficiency (PAE <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">max</sub> ) at 1.95 GHz. The linear gain is 37 dB and the compression point (OCP1) is 29.5 dBm. In order to fulfill the W-CDMA requirements, the PA respects the ACLR requirements until 23 dBm.
ChemInform Abstract: Plants as Industrial Chemical Factories: New Oils from Genetically Engineered Soybeans (1998)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Programming Colloidal Crystal Habit with Anisotropic Nanoparticle Building Blocks and DNA Bonds (2016)

Colloidal crystallization can be programmed using building blocks consisting of a nanoparticle core and DNA bonds to form materials with controlled crystal symmetry, lattice parameters, stoichiometry, and dimensionality. Despite this diversity of colloidal crystal structures, only spherical nanoparticles crystallized with BCC symmetry experimentally yield single crystals with well-defined crystal habits. Here, we use low-symmetry, anisotropic nanoparticles to overcome this limitation and to access single crystals with different equilibrium Wulff shapes: a cubic habit from cube-shaped nanoparticles, a rhombic dodecahedron habit from octahedron-shaped nanoparticles, and an octahedron habit from rhombic dodecahedron-shaped nanoparticles. The observation that one can control the microscopic shape of single crystals based upon control of particle building block and crystal symmetry has important fundamental and technological implications for this novel class of colloidal matter.
<title>Real-time monitoring and control during MBE growth of GaAs/AlGaAs Bragg reflectors using multiwave ellipsometry</title> (1997)

New multi-wavelength in-situ ellipsometer acquiring accurate ellipsometric data at 44 wavelength form 415 to 750 nm in less than 1s is directly mounted on a MBE growth system. Compared to single wavelength ellipsometers enough measured data are available to have access to layer thickness, composition, temperature and exact angle of incidence. In- situ monitoring and real time analysis was used to control the process of GaAs/AlGaAs Bragg reflectors with center wavelength of 1000 nm. The layer thickness is controlled very accurately even though ellipsometric data was acquired only every 3 seconds. The accuracy of shutter timing can be made very precisely even for slow ellipsometric acquisition rates and substrate wobble due to MBE substrate rotation. The control algorithm for two reflectors did not attempt to control the Al composition of an individual AlGaAs layer, but the measured composition was used to adjust the Al cell temperature for the next AlGaAs layer. In comparison for another reflector, the FastDyn fitting routine were used to simultaneously control the thickness and surface composition of the AlGaAs layers. An overview about the hardware and software integration on the MBE system will be given. The in-situ measurements during the growth control were later compared with ex-situ measurements made with spectroscopic ellipsometer system VASE.