gebhart/patrepeval huggingface dataset:
Encapsulation of Emissive Polymers within a Fluorinated Matrix (1996)

ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTEncapsulation of Emissive Polymers within a Fluorinated MatrixGuillermo C. Bazan, Michelle L. Renak, and Benjamin J. SunView Author Information Department of Chemistry, University of Rochester, Rochester, New York 14627 Cite this: Macromolecules 1996, 29, 3, 1085–1087Publication Date (Web):January 29, 1996Publication History Received21 September 1995Revised27 November 1995Published online29 January 1996Published inissue 1 January 1996https://pubs.acs.org/doi/10.1021/ma951429rhttps://doi.org/10.1021/ma951429rrapid-communicationACS PublicationsCopyright © 1996 American Chemical SocietyRequest reuse permissionsArticle Views183Altmetric-Citations13LEARN 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 InRedditEmail Other access optionsGet e-Alertsclose SUBJECTS:Homopolymers,Ligand exchange,Metals,Physical and chemical properties,Polymers Get e-Alerts
Placental Elastography reveal Viscoelastic Signatures ex-vivo with Single-Track Location Maximum a Posteriori Probability Spectroscopy (2022)

Viscoelasticity assessments in placenta is an emerging marker of fetal health. Non invasive bio-rheological measurements with shear waves have so far relied on ideal elastic assumptions for mapping material properties. However, shear waves in soft tissues undergo losses due to dispersion and attenuation while propagation. We present a framework of viscoelasticty reconstruction in frequency domain that incorporates both dispersion and attenuation of the propagating wave from its spatio-temporal profile. Such a framework, in contrast to conventional dispersion curve fitting, is able to exploit the full shear wave data set for rheological parameter mapping. Our shear wave excitation-detection scheme, known as Single Track Location Acoustic radiation Force Impulse (STL-ARFI), minimizes bias due to differential speckle at tracking zones, which enable creating a robust cross-spectral density estimate of the wave and aid in including absorption in dynamic elastography. We demonstrate feasibility of the technique on ex-vivo human placenta by creating quasi-local estimates of viscoleasticity over a broad bandwidth (10–350 Hz) mapped by a two time constant Generalized Maxwell Model (GMM). Furthermore, we demonstrate that our measurements are invariant when probed under different imaging configurations, reinforcing their robustness.
A comparison of close-cell, stripe-cell, and orthogonal-cell low voltage superjunction trench power MOSFETs for linear mode application (2018)

Trade-offs between the On Resistance and Linear Mode performance have been compared for different Low Voltage superjunction cell structures, including stripe-cell, closed-cell & orthogonal-cell. The closed-cell has measured R <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">SP</sub> of 4.4mΩ·mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> , which is 20% lower than that of the stripe-cell for the same die size and same pitch at the same package. Despite higher trans-conductance, the closed-cell linear mode performance is the same as that of the stripe-cell. The orthogonal-cell has the best linear mode performance, but has high Rds(on) due to current conduction path partially blocked by p-type superjunction column. The tested maximum load current is 38.4A at a drain voltage Vds of 10V and turn-on time of 10 mSec from the orthogonal-cell, which is the highest among the competitors' parts for a power 5×6 clip package. The Rds(on) for orthogonal-cell can be further improved by device optimization.
Engineering resistance against physalis mottle tymovirus by expression of the coat protein and 3' noncoding region (1999)

A 748 nucleotides cDNA fragment corresponding to the 3' terminal of physalis mottle virus, PhMV (formerly known as belladonna mottle virus) ($\\#$Y16104) genomic RNA encompassing the tymobox, coat protein ORF and 3' noncoding region was cloned into the binary vector pKYLX 71 35 $S^2$ and introduced into N. tabacum cv. Havana plants using Agrobacterium-mediated transformation. The R0 transgenic plants showed accumulation of coat protein which self-assembled into capsids in vivo. The transgenic R1 and R2 plants showed delay in symptom expression and virus accumulation upon challenge with PhMV. 55 and 65% of the plants showed no detectable symptoms in the R1 and R2 transgenic plants respectively, when challenged with 10 $\\mu$g/ml virus. Further, no detectable symptoms were observed in 75% and 25% of the R1 and R2 transgenic plants respectively, after 50 days of post infection when challenged with 10 $\\mu$g/ml RNA. Thus the expression of PhMV coat protein and 3' noncoding sequence confers a high level of resistance against PhMV infection.
A programming system for the imagine media processor (2002)

Media processing applications motivate new processor architectures that place new burdens on the compiler. These applications demand very high arithmetic rates and data bandwidth, but lack data reuse. The Imagine Media Processor (Imagine) is a new architecture that introduces two innovations to meet these demands. It uses multiple register files connected to the ALUs by shared buses and register file ports, and a large on-chip memory called the stream register file (SRF) to hold sequences of records called streams. The compiler is responsible for allocating the shared interconnect and SRF. 
This thesis describes a programming system that enables efficient application development for Imagine and other architectures that include these innovations. It introduces an implementation of the stream programming model. The stream programming model divides a media processing application into a series of kernels, computation-intensive functions that operate on streams, and a stream program that defines the high-level control- and data-flow between kernels. This thesis introduces KernelC, a C-like language used to write kernels. It describes a KernelC compiler that uses a new technique called communication scheduling to allocate the shared buses and register file ports and manage data flow between multiple functional units and register files. This thesis introduces a language extension called StreamC used with C++ to write stream programs. It describes a StreamC compiler that uses a new technique called stream scheduling to allocate the stream register file and determine when to load and store streams. 
The Imagine programming system has been used to implement sophisticated, high-performance applications for Imagine such as stereo depth extraction, MPEG2 encoding, and polygon rendering. Experimental results for a set of image processing, signal processing, and graphics benchmarks show that communication scheduling delivers schedule lengths for an Imagine Media Processor with multiple partitioned register files and shared interconnect that are within 1% of the same architecture with one multi-ported register file that is estimated to be eight times larger. For these benchmarks, stream scheduling allocates the SRF as well or better than experienced Imagine programmers can by hand using assembly language.
Functional 31P MRS in the visual cortex at 9.4 T (2023)

Even after a large number of studies with varying outcome, the effect of brain activation on the 31 P spectrum is still unclear. Here, the SNR gain expected from a field strength of 9.4 T is used to determine changes in the metabolite peaks during a 5 min stimulus. In spite of the high SNR and spectral quality, no significant variations were found. Especially the amplitude and linewidth of the PCr-peak did not change, and, while the signal of extracellular inorganic phosphate was well visible after averaging over all subjects, no variations in its amplitude or position were observed.
Regiospecific generation of lithioenamines from .alpha.,.beta.-unsaturated imines. An alternative method for reduction-alkylation of enones (1978)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRegiospecific generation of lithioenamines from .alpha.,.beta.-unsaturated imines. An alternative method for reduction-alkylation of enonesPaul A. Wender and Michael A. EissenstatCite this: J. Am. Chem. Soc. 1978, 100, 1, 292–294Publication Date (Print):January 1, 1978Publication History Published online1 May 2002Published inissue 1 January 1978https://pubs.acs.org/doi/10.1021/ja00469a055https://doi.org/10.1021/ja00469a055research-articleACS PublicationsRequest reuse permissionsArticle Views330Altmetric-Citations37LEARN 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 InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
Learned Fine-Tuner for Incongruous Few-Shot Learning. (2020)

Model-agnostic meta-learning (MAML) effectively meta-learns an initialization of model parameters for few-shot learning where all learning problems share the same format of model parameters -- congruous meta-learning. We extend MAML to incongruous meta-learning where different yet related few-shot learning problems may not share any model parameters. A Learned Fine Tuner (LFT) is used to replace hand-designed optimizers such as SGD for the task-specific fine-tuning. Here, MAML instead meta-learns the parameters of this LFT across incongruous tasks leveraging the learning-to-optimize (L2O) framework such that models fine-tuned with LFT (even from random initializations) adapt quickly to new tasks. As novel contributions, we show that the use of LFT within MAML (i) offers the capability to tackle few-shot learning tasks by meta-learning across incongruous yet related problems (e.g., classification over images of different sizes and model architectures), and (ii) can efficiently work with first-order and derivative-free few-shot learning problems. Theoretically, we quantify the difference between LFT (for MAML) and L2O. Empirically, we demonstrate the effectiveness of LFT through both synthetic and real problems and a novel application of generating universal adversarial attacks across different image sources in the few-shot learning regime.
New Charge Transporting Host Material for Short Wavelength Organic Electrophosphorescence:  2,7-Bis(diphenylphosphine oxide)-9,9-dimethylfluorene (2006)

We report the synthesis, crystal structure, and photophysical and electroluminescent properties of a new charge transporting host material for short wavelength phosphor-doped organic light emitting devices (OLEDs) based on 2,7-bis(diphenylphosphine oxide)-9,9-dimethylfluorene (PO6). The PO moiety is used as a point of saturation between the fluorene bridge and the outer phenyl groups so that the triplet exciton energy of PO6 is 2.72 eV, similar to that of a dibromo substituted fluorene, but it is more amenable to vacuum sublimation and has good film forming properties. Computational analysis (B3LYP/6-31G*) predicts the highest occupied molecular orbital and lowest unoccupied molecular orbital energies of PO6 to be lower by 1.5 and 0.59 eV, respectively, compared to a similar diphenylamino substituted derivative. In a simple bilayer OLED device, PO6 exhibits structured UV electroluminescence at a peak wavelength of 335 nm and structured lower energy emission with peaks at 380 and 397 nm, similar to the solid film and crystalline solid photoluminescence spectra. The longer wavelength peaks are attributed to aggregate formation via strong intermolecular interactions (PO···HC and edge-to-face CH···π contacts) and longer range electrostatic interactions between PO moieties leading to ordered regions in the film. Devices incorporating PO6 as the host material doped with iridium(III)bis(4,6-(difluorophenyl)pyridinato-N,C2)picolinate (FIrpic) exhibited sky blue emission with peak external quantum efficiency (ηext,max) of 8.1% and luminous power efficiency (ηp,max) of 25.1 lm/W. At a brightness of 800 cd/m2, generally considered to be sufficient for lighting applications, the ηext and ηp are 6.7% and 11.8 lm/W and the operating voltage is 5.6 V, which is significantly lower than has been demonstrated previously using this dopant.
Range Expansion for Wireless Power Transfer Using Joint Beamforming and Waveform Architecture: An Experimental Study in Indoor Environment (2021)

Far-field Wireless Power Transfer (WPT) has emerged as a potential power source for the Internet of Things (IoT) and Wireless Sensor Network (WSN). The expansion of the power transfer range is one of the key challenges to make the technology viable. In this letter, we experimentally study a channel-adaptive joint beamforming and waveform architecture to expand the power transfer range. WPT experiments have been conducted in a variety of wireless channels at various distances in a realistic indoor environment. The measurement data have been fitted using a simple analytical model to analyze the output DC power and achievable range improvement depending on the signal design schemes and the number of tones and antennas. The model shows a clear relationship between signal design versus output DC power and achievable range, and highlight the significant benefit of the proposed architecture to expand the power transfer range.
Some Reactions of α-Trifluoromethylsulphonyloxy-Penicillanate Esters (1982)

Abstract The preparation of 6α-trifluaromethylsulphoey-oxy striflate) derivatives (1), (2) of penicillanic acid esters has been described by the pfizer group.
Systemic Methotrexate Toxicity (1976)

Methotrexate pharmacokinetic studies, performed on a patient with renal impairment who had toxic effects following 20 mg/sq m of intrathecally administered methotrexate, demonstrated prolonged serum concentrations of the drug, which accounted for the condition. After the return of normal renal function, pharmacokinetic studies were repeated following the same dose and route of administration of methotrexate. On this occasion there was a rapid clearance of serum methotrexate below toxic levels.
Fabrication method for LMA multi-cald Yb-doped silica PM fibers (2010)

The fabrication of a polarization-maintaining version of a large-mode-area multi-clad fiber design with high Yb concentrations and a robust output beam represents a significant challenge due to the high risk of cracking of the doped silica multi-clad next to the core during the drilling procedure. A new preform fabrication approach permitting the realization of a large first-clad fiber featuring a high birefringence, while preserving the preform integrity is presented. The birefringence was improved by locating the stress-applying-parts in the first-clad region and by increasing their boron content. The preform and fiber fabrication will be presented as well as the fiber performances in a pulsed amplifier configuration.
A single chip PPG sensor with enhanced IR sensitivity for low power and small size (2021)

A single chip Photoplethysmography(PPG) sensor was developed for continuous measurements of heart rate from a mobile device. In order to utilize it in various mobile applications, it was necessary to achieve low power and small size of PPG sensors. For low power and small chip size of the PPG sensor, a photodiode(PD) for sensing signals and an analog front end(AFE) for signal amplification and ADC should be implemented in a single chip. The single chip PPG sensor which is implemented on a standard CMOS process with low operating voltage could be more suitable for mobile devices. In order to operate at a low voltage, reduction of Si thickness is required, and for this, high quantum efficiency(QE) of 43% at 940nm were obtained at 3um thickness by back side trench(BST) pattern and ARL optimization. In addition, to improve the performance of the PPG sensor, the leakage current of &lt;0.1nA and capacitance of &lt;200pF were measured by 20um pixel array. As a result, the low-power, small size single-chip PPG sensor showed similar performance to conventional high-voltage and large PPG sensor.
Single-Event Transient Space Characterizations in 28-nm UTBB SOI Technologies and Below (2020)

In this article, we present a study of single-event transients (SETs) through an integrated test vehicle. This block was designed and manufactured within two test-chips in 28- and 22-nm fully depleted silicon-on-insulator (FDSOI) advanced technologies. Radiation testing was performed on those test chips in order to characterize SETs. The results are cross-coupled with Monte Carlo simulations and discussed.
Formation of embedded fine copper patterns in various resins by the transfer of plated metal patterns (2017)

A combination of two techniques was used to form metal patterns embedded in flexible resin films. First, metal patterns were formed on sacrificial glass substrates using a photodefinable metal complex solution to form a latent catalyst image. Then, copper was selectively deposited on the catalyst image by electroless plating. In the first step, copper mesh patterns with ca. 90%T visible light transmittance and sheet resistance less than 1 Ω/□ were formed on glass substrates. In the next step, copper patterns were transferred by forming flexible thin resin films on sacrificial glass surfaces with the copper patterns, then curing the resin and delaminating the resin films from the glass. Height differences on the nanometre scale between the film surface and embedded copper pattern showed that complete embedding of the copper structures was attained. After the transfer, change in the optical and electrical properties of the mesh pattern was not detected.
Self-Healing of Unentangled Polymer Networks with Reversible Bonds (2020)

Self-healing polymeric materials are systems that after damage can revert to their original state with full or partial recovery of mechanical strength. Using scaling theory we study a simple model of autonomic self-healing of unentangled polymer networks. In this model one of the two end monomers of each polymer chain is fixed in space mimicking dangling chains attachment to a polymer network, while the sticky monomer at the other end of each chain can form pairwise reversible bond with the sticky end of another chain. We study the reaction kinetics of reversible bonds in this simple model and analyze the different stages in the self-repair process. The formation of bridges and the recovery of the material strength across the fractured interface during the healing period occur appreciably faster after shorter waiting time, during which the fractured surfaces are kept apart. We observe the slowest formation of bridges for self-adhesion after bringing into contact two bare surfaces with equilibrium (very low) density of open stickers in comparison with self-healing. The primary role of anomalous diffusion in material self-repair for short waiting times is established, while at long waiting times the recovery of bonds across fractured interface is due to hopping diffusion of stickers between different bonded partners. Acceleration in bridge formation for self-healing compared to self-adhesion is due to excess non-equilibrium concentration of open stickers. Full recovery of reversible bonds across fractured interface (formation of bridges) occurs after appreciably longer time than the equilibration time of the concentration of reversible bonds in the bulk.
Surface behavior of low-temperature molten salt mixtures during the transition from liquid to solid (2018)

We report on surface investigations of cesium and tetraphenylphosphonium bis(trifluoromethylsulfonyl)imide (Cs[Tf2N], [PPh4][Tf2N]) molten salts and their mixtures. Depending on composition, these ionic compounds combine low melting points with exceptionally high thermal stability, and thus, exhibit considerably enlarged thermal operation windows compared to conventional ionic liquids. To elucidate their liquid-solid transition behavior in the near-surface region, temperature-dependent angle-resolved X-ray photoelectron spectroscopy (ARXPS) investigations were performed using our unique laboratory electron spectrometer DASSA (“Dual Analyzer System for Surface Analysis”), dedicated for investigations of macroscopic liquid samples. We followed temperature-induced changes in bulk and surface composition within the first nanometers of the neat salt melts and of Cs[Tf2N] : [PPh4][Tf2N] = 3 : 1 and 1 : 3 mixtures. In the mixtures, pronounced surface enrichment of Cs+ on expense of the bulky [PPh4]+ ions was found in the liquid state at temperatures close to the liquid-solid transition. In the solid state of Cs[Tf2N]-rich mixtures, [PPh4]+ completely vanishes from the near-surface region probed by XPS.
Dynamic Distortion Characteristics of Silicon Evanescent Detectors and Phase Modulators (2009)

The linearity of silicon evanescent modulators and quantum well detectors was measured for the first time. An output IP3 of 21 dBm for detectors and a peak phase input IP3 of 2.6π for reverse biased phase modulators was achieved at 500 MHz.
Enterprise Security: A Community of Interest Based Approach. (2006)

Enterprise networks today carry a range of mission crit-ical communications. A successful worm attack within an enterprise network can be substantially more devastating to most companies than attacks on the larger Internet. In this paper we explore a brownfield approach to hardening an enterprise network against active malware such as worms. The premise of our approach is that if future communica-tion patterns are constrained to historical “normal ” com-munication patterns, then the ability of malware to exploit vulnerabilities in the enterprise can be severely curtailed. We present techniques for automatically deriving individual host profiles that capture historical communication patterns (i.e., community of interest (COI)) of end hosts within an en-terprise network. Using traces from a large enterprise net-work, we investigate how a range of different security poli-cies based on these profiles impact usability (as valid com-munications may get restricted) and security (how well the policies contain malware). Our evaluations indicate that a simple security policy comprised of our Extended COI-based profile and Relaxed Throttling Discipline can effec-tively contain worm behavior within an enterprise without significantly impairing normal network operation. 1