gebhart/patrepeval huggingface dataset:
Wide field diffractive lenses for imaging, scanning, and Fourier transformation (1989)

Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text G. Michael Morris and D. A. Buralli, "Wide field diffractive lenses for imaging, scanning, and Fourier transformation," Optics News 15(12), 41-42 (1989) Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
Molar-Scale Synthesis of 1,2:5,6-Di-<i>O</i>-isopropylidene-α-<scp>d</scp>-allofuranose:  DMSO Oxidation of 1,2:5,6-Di-<i>O</i>-isopropylidene-α-<scp>d</scp>-glucofuranose and Subsequent Sodium Borohydride Reduction (2004)

Two variants of oxidation with DMSO followed by sodium borohydride reduction have been investigated to make the synthesis of 1,2:5,6-di-O-isopropylidene-α-d-allofuranose (4) suitable for large-scale manufacturing.
Intersection Warning System for Occlusion Risks Using Relational Local Dynamic Maps (2018)

This work addresses the task of risk evaluation in traffic scenarios with limited observability due to restricted sensorial coverage. Here, we concentrate on intersection scenarios that are difficult to access visually. To identify the area of sight, we employ ray casting on a local dynamic map providing geometrical information and road infrastructure. Based on the area with reduced visibility, we first model scene entities that pose a potential risk without being visually perceivable yet. Then, we predict a worst-case trajectory in the survival analysis for collision risk estimation. Resulting risk indicators are utilized to evaluate the driver's current behavior, to warn the driver in critical situations, to give suggestions on how to act safely or to plan safe trajectories. We validate our approach by applying the resulting intersection warning system on real world scenarios. The proposed system?s behavior reveals to mimic the general behavior of a correctly acting human driver.
<title>Higher-order statistical steganalysis of palette images</title> (2003)

In this paper, we describe a new higher-order steganalytic method called Pairs Analysis for detection of secret messages embedded in digital images. Although the approach is in principle applicable to many different steganographic methods as well as image formats, it is ideally suited to 8-bit images, such as GIF images, where message bits are embedded in LSBs of indices to an ordered palette. The EzStego algorithm with random message spread and optimized palette order is used as an embedding archetype on which we demonstrate Pairs Analysis and compare its performance with the chi-square attacks and our previously proposed RS steganalysis. Pairs Analysis enables more reliable and accurate message detection than previous methods. The method was tested on databases of GIF images of natural scenes, cartoons, and computer-generated images. The experiments indicate that the relative steganographic capacity of the EzStego algorithm with random message spread is less than 10% of the total image capacity (0.1 bits per pixel).
Novel Relativistic Magnetron With Lengthy Virtual Cathode And Magnetic Mirror (2017)

In our recent work <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sup> we described a relativistic magnetron with diffraction output (MDO) that uses a lengthy virtual cathode (VC) instead of a physical cathode as the source of electrons. Here we describe the use of a magnetic mirror instead of a VC at the output of the MDO to not only form a lengthy VC, but also to eliminate axial leakage current to achieve even higher efficiency operation. We believe this MDO with lengthy VC is ideally suited for long pulse and high repetition rate operation since gap closure is eliminated.
Type I PRMT inhibition protects against C9ORF72 arginine-rich dipeptide repeat toxicity (2020)

ABSTRACT The most common genetic cause of amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD) is a repeat expansion mutation in the C9orf72 gene. Repeat-associated non-AUG (RAN) translation of this expansion produces five species of dipeptide repeat proteins (DRPs). The arginine containing DRPs, polyGR and polyPR, are consistently reported to be the most toxic. Here, we uncover Type I protein arginine methyltransferase (PRMT) inhibitors as possible therapeutics for polyGR- and polyPR- related toxicity. Furthermore, we reveal data that suggest that asymmetric dimethylation (ADMe) of polyGR is a determining factor in its pathogenesis.
Biodegradable Magnetic Nanocomposite Spheres Fabrication by O∕O Emulsion∕Solvent Evaporation Technique for Drug Delivery Purposes (2008)

Drug targeting systems are important research areas for many diseases treatments (e.g., cancer, nerve damage, heart and artery, diabetic, eye and other medical treatments). Currently, magnetic field, electric field, ultrasound, temperature, UV light and∕or mechanical force systems are considered more for research and development. Magnetic targeted drug delivery system is usually preferred because targeted systems improve the therapeutic index of drug molecules by minimizing the toxic side effects on healthy cells and tissues. In this study, magnetic nanoparticles (∼10nm) were prepared by a chemical coprecipitation of ferric and ferrous chloride salts in the presence of a strong base (ammonium hydroxide) and used for a drug delivery purposes. An oil-in-oil emulsion∕solvent evaporation technique was chosen for the synthesis of nanocomposite spheres. Percentages of magnetic nanoparticles (%5, %10, %20 and%30) and poly(D,L-lactide-co-glycolide) were combined together to produce nanocomposite particles with diameters of 500nmto1.2micronmeter. The effect of particle concentrations on nanocomposite particle size and distribution and morphology were investigated by using scanning electron microscopy (SEM) and laser light scattering (LLS). Additionally, external magnetic fields with various magnet distance, magnetic field, pump speed and solid contents were applied to the nanocomposite particles in a liquid media to find out the effect of variables for the targeting of drug carrying nanocomposite spheres.
Preparation of Composite Black Iron Oxide particle by Carbon Black Coating (2000)

Black pigments with finer size, higher blackness, greater tinting strength, and better weathering resistance are required for the production of better coloring materials. In this paper, we prepared black iron oxide particles by coating carbon black with the assist of methyltriethoxysilane as an adhesive agent on magnetite and Mn modified hematite. The blackness, tinting strength, and weathering resistance of the iron oxide particles were largely improved by the carbon coating. TEM photographs indicated that the carbon black is firmly bound to the surface of the black iron oxide particles as a distinct layer.
Dielectric substrate effects on ultra wideband loop antenna (2007)

A loop antenna of non-uniform current offers the potential of wideband impedance matching to a specified characteristic impedance. For characteristic impedances above 100 Omega, the antenna can operate over a wide bandwidth without a dielectric substrate backing. The antenna's metallization alone cannot provide input impedances significantly less than 100 Omega, so backing must be used. The effects of including a dielectric substrate with the proposed wideband antenna are examined. Experimental data confirms the validity of the simulations.
Cell manipulation using magnetic nanowires (2003)

The use of magnetic nanowires is demonstrated as a method for the application of force to mammalian cells. Magnetic separations were carried out on populations of NIH-3T3 mouse fibroblast cells using ferromagnetic Ni wires 350 nm in diameter and 35 μm long. Separation purities in excess of 90% and yields of 49% are obtained. The nanowires are shown to outperform magnetic beads of comparable volume.
Tunable Enhanced Mid-Infrared Light Absorption in Graphene (2017)

We demonstrate extraordinary ~45% absorption of light by graphene in mid-infrared region by exciting graphene surface plasmons. The absorption wavelength is tunable by gate voltage. Further, we show that the absorption bandwidth depends on the carrier mobility of graphene.
Cross-linking of surface IgM stimulates the Ras/Raf-1/MEK/MAPK cascade in human B lymphocytes. (1994)

The mechanism by which mitogen-activated protein kinase (MAPK) is activated in human B cells following cross-linking of the antigen receptor was investigated. Following anti-IgM antibody and phorbol 12-myristate 13-acetate (PMA) stimulation, we demonstrate the activation of Ras, Raf-1, and MAPK/ERK kinase (MEK), all of which are thought to participate in an important signaling cascade that leads to MAPK activation. We detected the kinase activities of Raf-1 and MEK toward purified recombinant substrates for each in this pathway (MEK for Raf-1 and MAPK for MEK). Following stimulation with either anti-IgM or PMA, Ras activation was observed, and the ability of Raf-1 to phosphorylate recombinant kinase-inactive MEK was increased by approximately 10-fold. Similarly, MEK activity toward kinase-active or -inactive recombinant MAPK also increased upon anti-IgM or PMA treatment. Furthermore, the activation of both MAPK and p90rsk was demonstrated under identical conditions in the B cells. We conclude that activation of B lymphocytes through the antigen receptor stimulates distinct members of the Ras/Raf-1/MEK cascade and this mechanism is likely to be responsible for MAPK and p90rsk activation in these cells.
L<inf>1</inf> adaptive controller for multi-input multi-output systems in the presence of nonlinear unmatched uncertainties (2010)

This paper presents the L <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sub> adaptive controller for a class of multi-input multi-output nonlinear systems in the presence of unmatched uncertainties. The L <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sub> controller ensures uniformly bounded transient response for system's input and output signals simultaneously, in addition to steady-state tracking. Simulation results verify the theoretical findings.
Room-Temperature Quantum Sensing in CMOS: On-Chip Detection of Electronic Spin States in Diamond Color Centers for Magnetometry (2018)

In this paper, we report the first on-chip quantum sensor that combines compact and multifunctional CMOS integrated circuit technologies with nitrogen-vacancy (NV) centers in diamond. The system performs two critical functions for quantum magnetometry with NV centers: strong generation and efficient delivery of microwave for quantum-state control, and optical filtering/detection of spin-dependent fluorescence for quantum-state readout. In particular, we experimentally demonstrate on-chip optically detectable magnetic resonance (ODMR) for the first time.
Measurement of phase and frequency variations in radio-frequency signals (2003)

A method to measure time-varying phase and frequency of radio-frequency signals using the Morlet transform is presented. The theoretical analysis and simulation results show that the method is suitable for detecting phase jitter, phase discontinuities, and frequency contents in telecommunication signals.
Generalization of Dual-Porosity System Representation for Hydraulic Fracturing–Stimulated Shale Reservoir (Part 2): Modeling, Simulation Workflow, and History Matching Studies (2011)

Abstract Recently, a new methodology has been developed to model hydraulic fracturing induced fracture network and simulate a shale reservoir as a dual porosity system. The reservoir geological and petrophysical data are integrated to build both structure and property models. Microseismic (MS) data are used to delineate stimulated reservoir volumes; event intensities are employed to estimate hydraulic fracture intensity. The fracture intensity is calibrated by using hydraulic fracturing job data and geomechanical properties through the fracture propagation mechanism. As part one of this title in previous study, a theoretical framework generalization for the new methodology was introduced. Modeling and calibration of fracture network by stage, by well, and by well pad are discussed. A superpositioning technique is used to process the overlapping of MS mapping responses from different stages. Different fracture network geometry and average fracture width are evaluated. Various stimulated volume expansion models are investigated for proppant placement estimations and fracture conductivity distributions. A procedure is also introduced to build a simulation model when MS data is lacking by utilizing treatment data, geomechanical parameters, and user experience on estimated stimulation volume configurations. In this paper, that framework generalization is updated with new analysis. We focus on details for implementation of the methodology, modeling workflow, and stepwise procedure. The process is comprehensive, giving full consideration to shale reservoir integrated modeling, data input, fracture network geometry configuration, intensity calibration, and calculation of dual-porosity model parameters for reservoir simulation and other fracture network properties. This extended methodology and workflow can be applied to single well and multiple-well modeling when the well drainage volumes are interconnected. It provides an effective means for modeling and simulation study as well as history-matching calibration of stimulated shale gas reservoirs. The new modeling methodology was applied to a Barnett shale field case, and sensitivity and history matching analyses were carried out.
Low-complexity finite precision decoders for low-density parity-check codes (2010)

ITC/USA 2010 Conference Proceedings / The Forty-Sixth Annual International Telemetering Conference and Technical Exhibition / October 25-28, 2010 / Town and Country Resort & Convention Center, San Diego, California
Solar Energy Applications of Plasmonics (2011)

Plasmonics has provided optics researchers new means to control dispersion and light localization at nanoscale dimensions. Now plasmonic design approaches are yielding light trapping structures for improved efficiency in thin solar cells and structures for solar fuel generation. 150-word Biography: Harry Atwater is currently Howard Hughes Professor and Professor of Applied Physics and Materials Science at the California Institute of Technology. His research interests center around two interwoven research themes: photovoltaics and solar energy; and plasmonics and optical metamaterials. Atwater and his group have been active in photovoltaics research for more than 20 years. Recently they have created new photovoltaic devices, including the silicon wire array solar cell, and layer-transferred fabrication approaches to III-V semiconductor III-V and multijunction cells, as well as making advances in plasmonic light absorber structures for III-V compound and silicon thin films. He is an early pioneer in surface plasmon photonics; he gave the name to the field of plasmonics in 2001. He has authored or co-authored over 200 publications, and his group’s developments in the solar and plasmonics field have been featured in Scientific American and in research papers in Science, Nature Materials, Nature Photonics and Advanced Materials. Atwater received his S.B. (1981), S.M. (1983), and Ph.D. (1987) in Electrical Engineering from the Massachusetts Institute of Technology. He currently serves as as Director of the DOE Energy Frontier Research Center on Light-Matter Interactions in Solar Energy Conversion (http://lmi.caltech.edu) and was recently named Director of the Resnick Institute for Science, Energy and Sustainability, http://resnick.caltech.edu/, Caltech’s largest endowed research program focused on energy. Atwater is founder and chief technical advisor for Alta Devices, a venture-backed company in Santa Clara, CA developing a transformational high efficiency/low cost photovoltaics technology, and Aonex Corporation, a compound semiconductor materials company. He has also served an editorial board member for Surface Review and Letters. Professor Atwater has consulted extensively for industry and government, and has actively served the materials community in various capacities, including Material Research Society Meeting Chair (1997), Materials Research Society President (2000), AVS Electronic Materials and Processing Division Chair (1999), and Board of Trustees of the Gordon Research Conferences. In 2008, he served as Chair for the Gordon Research Conference on Plasmonics. Atwater has been honored by awards including the MRS Kavli Lecturer in Nanoscience in 2010; Popular Mechanics Breakthrough Award, 2010; Joop Los Fellowship from the Dutch Society for Fundamental Research on Matter in 2005, A.T. & T. Foundation Award, 1990; NSF Presidential Young Investigator Award, 1989; IBM Faculty Development Award, 1989-1990; Member, Bohmische Physical Society, 1990; IBM Postdoctoral Fellowship, 1987. Article not available.
Integrated VLSI radiation/particle or with biased PIN (1993)

A structure is described for an integrated detector for detection of radiation of ionizing particles, X-rays and light, the integrated detector being integrated on a substrate of a first conductivity type conductor with a front side surface and back side surface, said radiation impinging on said structure, said structure comprising: one or more PIN diodes with each of said PIN diodes having a junction near said back side surface of said substrate created by a diffusion of second conductivity type semiconductor opposite to said first conductivity type semiconductor of said substrate, one or more collection electrodes on said front side surface for collecting the charge generated by said radiation impinging on detector, means for causing charge generated by said radiation to focus on said collection electrodes, at least one electrode on said back side surface for contacting said diffusion creating said junction of said PIN diodes, wherein each of said electrodes associates with one of said PIN diodes, and readout circuitry associated with said collection electrodes on said front side of said substrate, peripheral regions containing extra readout circuitry and control circuitry for controlling said readout circuitry, and wherein said peripheral regions include dummy PIN diodes having grounded collection electrodesmore » on said front side surface« less
20 dB gain thulium-doped fluorozirconate fibre amplifier operating at around 0.8 μm (1991)

A thulium-doped fluorozirconate fibre amplifier pumped at 785 nm is described. Amplification is observed from 800 nm to 830nm. with a small signal gain in excess of 20dB at 806 nm.
Internally damped, self-arresting vertical drop-weight apparatus (1994)

A vertical dropped-weight impact test machine has a dropped-weight barrel vertically supported on upper and lower support brackets. The dropped-weight barrel is chambered to receive a dropped-weight assembly having a latch pin at its upper end, a damping unit in the middle, and a tup at its lower end. The tup is adapted for gathering data during impact testing. The latch pin releasably engages a latch pin coupling assembly. The latch pin coupling assembly is attached to a winch via a halyard for raising and lowering the dropped-weight assembly. The lower end of the dropped-weight barrel is provided with a bounce-back arresting mechanism which is activated by the descending passage of the dropped-weight assembly. After striking the specimen, the dropped-weight assembly rebounds vertically and is caught by the bounce-back arresting mechanism. The damping unit of the dropped-weight assembly serves to dissipate energy from the rebounding dropped-weight assembly and prevents the dropped-weight assembly from rebounding from the self-arresting mechanism.
Isolation of a Strain of <i>Clostridium thermoaceticum</i> Capable of Growth and Acetic Acid Production at pH 4.5 (1982)

Using a series of pH controlled batch fermentations operated in a fed-batch mode and adaptation and selection techniques where pH and acetic acid provided the selective pressures, we isolated a culture of Clostridium thermoaceticum that can grow and produce acetic acid at pH 4.5. At pH 4.5 the fastest mass doubling time was 36 h, and the highest acetic acid concentration reached was 4.5 g/liter. Generally, as the pH was decreased from 6.0 and the initial acetic acid concentration increased, the mass doubling time increased, and the final acetic acid concentration decreased. These observations can be explained in terms of inhibition by the free acetic acid concentration at a given pH, relative to the total acetic acid concentration (free acid plus acetate ion). We have thus reached one of the criteria determined by us to be required for an economically viable fermentation acetic acid process, i.e., pH 4.5. A second requirement for a mass doubling time of about 7 h (0.1/h dilution rate) can probably be reached by selection in continuous culture. The final requirement for an acetic acid concentration of 50 g/liter will be the most difficult to achieve in view of the organism's sensitivity to low concentrations of free acetic acid.
<title>Quantum well infrared photodetectors (QWIPs) for astronomy</title> (1998)

In recent years, many research groups in the world have demonstrated large format quantum well IR photodetector (QWIP) focal pane arrays for various thermal imaging applications. QWIPs as opposed to conventional low bandgap IR detectors, are limited by thermionic dark current and not tunneling current down to 30K or less. As a result the performance of QWIPs can be substantially improved by cooling from 70K to 30K. Cooling does not induce any nonuniformity or 1/f noise in QWIP focal plane arrays. In this paper, we discuss the development of highly uniform long-wavelength QWIPs for astronomical applications.