gebhart/patrepeval huggingface dataset:
Pasteurella haemolytica cytotoxin neutralizing activity in sera from Ontario beef cattle. (1983)

A random sample of sera obtained from cattle necropsied as part of the Bruce County Beef Project in 1980-81 was assayed for the ability to neutralize the cytotoxin of Pasteurella haemolytica A1. Cattle dying of fibrinous pneumonia had significantly lower neutralizing activity in serum than cattle which died for reasons other than pneumonia. Activity in pneumonic cattle was also lower than the mean of twelve samples randomly chosen from sera of cattle bled on entry to feedlots in the fall of 1979. A role for the toxin neutralizing response in resistance to pneumonic pasteurellosis is proposed.
Quantitative assay using recombinant human islet glutamic acid decarboxylase (GAD65) shows that 64K autoantibody positivity at onset predicts diabetes type. (1993)

At and before onset, most insulin-dependent diabetics (IDDM) have islet GAD65 autoantibodies (GAD65Ab). Since IDDM also occurs in older patients where non-insulin-dependent diabetes is common, we studied GAD65Ab at onset to classify diabetes type. Our quantitative immunoprecipitation assay uses recombinant human islet GAD65 stably expressed in hamster fibroblasts. Electrophoretic mobility was identical to native islet GAD65. Like native antigen, recombinant GAD65 migrated as two bands during electrophoresis, but converted to one under stronger reduction. Immunoprecipitation was linear with respect to antibody or antigen concentration. In 120 population-based diabetic patients of all ages grouped by treatment at onset and after 18 mo, GAD65Ab were present in 70% on insulin (n = 37), 10% on oral agent (n = 62, P < 0.0001), 69% changing from oral agent to insulin (n = 16, P < 0.001), and 1 of 33 controls. 65% with GAD65Ab, versus 8% without, changed from oral agent to insulin (P < 0.01). The GAD65Ab quantitative index was remarkably stable, and only 2 of 32 patients changed antibody status during follow-up. Concordance between GAD65Ab and islet cell antibodies was 93%. Quantitative correlation was approximate but significant. This highly sensitive, quantitative, high capacity assay for GAD65Ab reveals treatment requirements better than clinical criteria, perhaps guiding immunomodulatory therapy.
A Monolithic Signal Processing IC for TV Receivers (1970)

A monolithic signal processing system which provides the AGC and sync. separation functions for a television receiver. Internal noise protection is provided for both functions. There is no noise threshold nor AGC detector level adjustment. Provision is made for both negative-and positive-going separated sync. output. Also included is a low impedance video output for driving the luminance channel or a video output stage.
A Proxy Signature-Based Swarm Drone Authentication With Leader Selection in 5G Networks (2022)

Drones are imperative for the 5G architecture as a mobile source to expand network coverage and support seamless services, particularly through enabling device-to-device (D2D) communication. Such deployment of drones in D2D settings raises various security threats in drone communication. While the existing D2D communication security standard within the 4G cellular architecture may address some of these issues, the standard includes heavy traffic toward the network core servers. If this security standard is to be adopted in the 5G D2D security services with the same traffic load, it may negatively impact the 5G network performance. Therefore, this paper proposes a lightweight proxy signature-based authentication mechanism for a swarm of drones compatible with the 5G D2D standard mechanisms. This paper proposes a distributed delegation-based authentication mechanism to reduce the traffic overhead toward the 5G core network. In this scheme, the legitimate drones are authorized as proxy delegated signers to perform authentication on behalf of the core network. Furthermore, we propose a mechanism to elect and relocate a new leader relay drone from the existing drone swarm. We implemented the proposed authentication algorithm in the 5G D2D-based communication package over NS-3 while performing the computational calculations on a RaspberryPi3 device to mimic the drone calculation process and delays. The performance of the proposed authentication shows a promising reduction in the authentication time and shows lightweight and reliable compatibility.
Polyphonic tone synthesizer with harmonic range selection (1987)

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Ralph Deutsch; Polyphonic tone synthesizer with harmonic range selection. J. Acoust. Soc. Am. 1 February 1987; 81 (2): 584. https://doi.org/10.1121/1.394868 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAcoustical Society of AmericaThe Journal of the Acoustical Society of America Search Advanced Search |Citation Search
100-kHz-Repetition-Rate Terahertz-Wave Parametric Generator for Imaging Applications (2018)

We investigated the performance of an injection-seeded THz-wave parametric generator at a repetition frequency in the 100-kHz regime. We obtained a THz-wave output of ~30 μW in the range of 1.0–2.8 THz.
Low-Latency Speaker-Independent Continuous Speech Separation (2019)

Speaker independent continuous speech separation (SI-CSS) is a task of converting a continuous audio stream, which may contain overlapping voices of unknown speakers, into a fixed number of continuous signals each of which contains no overlapping speech segment. A separated, or cleaned, version of each utterance is generated from one of SI-CSS's output channels nondeterministically without being split up and distributed to multiple channels. A typical application scenario is transcribing multi-party conversations, such as meetings, recorded with microphone arrays. The output signals can be simply sent to a speech recognition engine because they do not include speech overlaps. The previous SI-CSS method uses a neural network trained with permutation invariant training and a data-driven beamformer and thus requires much processing latency. This paper proposes a low-latency SI-CSS method whose performance is comparable to that of the previous method in a microphone array-based meeting transcription task.This is achieved (1) by using a new speech separation network architecture combined with a double buffering scheme and (2) by performing enhancement with a set of fixed beamformers followed by a neural post-filter.
The tin dioxide gas sensor (1993)

An introduction to the tin dioxide (SnO2) ceramic gas sensor and its electrical characterization is presented, followed by details of some methods of active material preparation. Problems of sensitivity, selectivity and their modification are then considered. The basic measurand is the conductance of the sensor, which means that the active material must always bridge a pair of electrodes; it must also be heated to several hundred degrees Celsius above ambient for successful operation. Descriptions of basic design approaches to the relevant electronic circuits are presented.
Particle Size of Pneumatically Conveyed Powders Measured Using Impact Duration (2007)

Abstract CSIRO Minerals has developed a technique for measuring particle size in pneumatically conveyed powders [1] by measurement of the acoustic waves produced by particle impacts upon a specially designed transducer. Previous work has focused on using the peak acoustic wave amplitude to determine particle size. This produces a spectrum that is hard to determine the particle size from, as the peak amplitude is a non‐linear function of particle diameter, and is strongly affected by angle of incidence and velocity of the impacting particle. In this paper impact duration measurements are used to overcome these difficulties while retaining the advantages of being able to measure in high solids loadings of up to at least 0.5 kg/m 3 of powder. In laboratory tests the impact size monitor's (ISM) results have been correlated with optical diffraction measurements of the mean (by number) powder size with a correlation coefficient of 0.985 and a relative error of 5.5 %. The ISM operated successfully in the laboratory at a loading of 0.5 kg/m 3 of powder and measured particles down to 50 microns in size.
A deep learning approach for 18F-FDG PET attenuation correction (2018)

We have developed an automated approach (deepAC) that allows generation of a continuously valued pseudo-CT from a single <sup>18</sup>F-FDG non-attenuation-corrected (NAC) PET image and evaluated it in PET/CT brain imaging.
Demonstration of in-line monitoring and compensation of polarization-dependent loss for multiple channels (2002)

We use polarization scrambling at the beginning of the link and monitor down stream the power fluctuation induced by in-line components that exhibit polarization-dependent loss (PDL). Compensation of PDL is realized by minimizing this power fluctuation when a variable PDL element is tuned. We demonstrate in-line monitoring and compensation of PDL for an 800-km optical link with a 2.4-dB average PDL and 14-ps average polarization-mode dispersion. By scrambling the polarization of an ancillary wavelength located at the center of a four-channel 10-Gb/s nonreturn-to-zero wavelength-division-multiplexing system, the 2% power-penalty distribution tail is reduced from 6.5 dB to <2 dB within a 6-nm PDL-compensation bandwidth.
Application of the Karhunen–Loeve transform temporal image filter to reduce noise in real-time cardiac cine MRI (2009)

Real-time dynamic magnetic resonance imaging (MRI) typically sacrifices the signal-to-noise ratio (SNR) to achieve higher spatial and temporal resolution. Spatial and/or temporal filtering (e.g., low-pass filtering or averaging) of dynamic images improves the SNR at the expense of edge sharpness. We describe the application of a temporal filter for dynamic MR image series based on the Karhunen-Loeve transform (KLT) to remove random noise without blurring stationary or moving edges and requiring no training data. In this paper, we present several properties of this filter and their effects on filter performance, and propose an automatic way to find the filter cutoff based on the autocorrelation of the eigenimages. Numerical simulation and in vivo real-time cardiac cine MR image series spanning multiple cardiac cycles acquired using multi-channel sensitivity-encoded MRI, i.e., parallel imaging, are used to validate and demonstrate these properties. We found that in this application, the noise standard deviation was reduced to 42% of the original with no apparent image blurring by using the proposed filter cutoff. Greater noise reduction can be achieved by increasing the length of the image series. This advantage of KLT filtering provides flexibility in the form of another scan parameter to trade for SNR.
Robust Mapping of Incoherent Fiber-Optic Bundles (2007)

A method and apparatus for mapping between the positions of fibers at opposite ends of incoherent fiber-optic bundles have been invented to enable the use of such bundles to transmit images in visible or infrared light. The method is robust in the sense that it provides useful mapping even for a bundle that contains thousands of narrow, irregularly packed fibers, some of which may be defective. In a coherent fiber-optic bundle, the input and output ends of each fiber lie at identical positions in the input and output planes; therefore, the bundle can be used to transmit images without further modification. Unfortunately, the fabrication of coherent fiber-optic bundles is too labor-intensive and expensive for many applications. An incoherent fiber-optic bundle can be fabricated more easily and at lower cost, but it produces a scrambled image because the position of the end of each fiber in the input plane is generally different from the end of the same fiber in the output plane. However, the image transmitted by an incoherent fiber-optic bundle can be unscrambled (or, from a different perspective, decoded) by digital processing of the output image if the mapping between the input and output fiber-end positions is known. Thus, the present invention enables the use of relatively inexpensive fiber-optic bundles to transmit images.
Multi-focus ultrasonic transducer (1983)

Abstract An ultrasonic transducer concept is described where a plurality of different focal lengths, within a unitary structure, are the result of combining the one-dimensional focusing by individual zones of a piezoelectric spiral-shaped cylindrical surface with orthogonal focusing due to individual Fresnel zone electrode patterns.
Partial hydrogenation of fatty acid methyl esters at supercritical conditions (1999)

Under supercritical or near-critical conditions propane is a very good solvent for both lipids and hydrogen. Thus, it is possible to generate an essentially homogeneous phase, in which the transport resistances for the hydrogen are eliminated. Therefore, the hydrogen concentration at the catalyst surface can be greatly increased, resulting in extremely high reaction rates and products having low trans fatty acid contents. In this study we present results from hydrogenation of rapeseed fatty acid methyl esters under near-critical and supercritical conditions. Temperature, residence time, hydrogen pressure, and catalyst life were varied systematically, using a statistical experimental design, in order to elucidate reaction rate and trans fatty acid formation as functions of the above variables. The experiments were carried out in a microscale fixed-bed reactor, using a 3% Pd-on-aminopolysiloxane catalyst. At 92 °C, a hydrogen pressure of 4 bar, and a residence time of 40 ms we obtained a trans content of 3.8 ± 1.7% at a iodine value of 70. Our results support the findings from traditional processes that at a constant iodine value (IV) the trans content decreases with decreasing temperature, increasing pH2, and increasing residence time. The reaction rate at our best conditions was roughly 500 times higher than in traditional batch hydrogenation. Partielle Hydrierung von Fettsäuremethylestern bei überkritischen Bedingungen.Im überkritischen oder nahekritischen Zustand besitzt Propan sehr gute Lösungseigenschaften für sowohl Fette als auch Wasserstoff. Dies ermöglicht es, eine im wesentlichen homogene Reaktionsmischung zu erzeugen, in der die Transportwiderstände für den Wasserstoff eliminiert sind. Dadurch kann die Wasserstoffkonzentration an der Katalysatoroberfläche wesentlich erhöht werden, was zu extrem hohen Reaktionsgeschwindigkeiten führt. Außerdem können auf diese Weise Produkte mit einem niedrigen Gehalt an trans-Fettsäuren erzielt werden. In der vorliegenden Studie präsentieren wir die Ergebnisse der partiellen Hydrierung von Rapsöl-Fettsäuremethylestern bei nahekritischen und überkritischen Bedingungen. Unter Verwendung eines statistischen Versuchsdesigns wurden Temperatur, Aufenthaltszeit, Wasserstoffpartialdruck und Katalysatorlebensdauer systematisch variiert, um die Reaktionsgeschwindigkeit und die Bildung von trans-Fettsäuren als Funktionen dieser Variablen darzustellen. Die Versuche wurden in sehr kleinem Maßstab in einem Festbettreaktor durchgeführt. Der verwendete Katalysator bestand aus 3% Pd auf einem Aminopolysiloxan-Träger. Bei 92 °C, einem Wasserstoffdruck von 4 bar und einer Aufenthaltszeit von 400 ms erreichten wir einen trans-Gehalt von 3,8 ± 1,7% bei einer Jodzahl von 70. Unsere Ergebnisse bestätigen die für den traditionellen Prozeß gefundenen Trends, daß bei konstanter Jodzahl der trans-Gehalt abnimmt, wenn die Temperatur gesenkt, der Wasserstoffdruck erhöht, bzw. die Aufenthaltszeit verkürzt wird. Die höchsten von uns erzielten Reaktionsgeschwindigkeiten waren rund 500-fach höher als in herkömmlichen Batch-Prozessen.
VIRAL SATELLITE RNA AS A BIOLOGICAL CONTROL AGENT FOR PLANTS (2013)

Biological control technology based on viral satellite mediated protection is a novel concept of the viral disease control strategies. Cucumber mosaic virus (CMV) is considered one of the most economically damaging viruses among field grown vegetables such as tomato (Solanum lycopersicum L). CMV can harbor molecular parasites known as satellite RNAs that dramatically alter the symptom phenotype induced by the virus. Two indigenous strains of CMV satellite RNA were isolated and have been sequenced. One of these strains designated as CMV‐KU1 reduced the viral disease to a virtually asymptomatic condition. The other strain was found to aggravate the symptoms and cause severe crop loss and tomato necrosis. Thus, satellites have been referred to as “natural inhibitors of crop damaging viruses’. These satellites RNAs are small nucleic acids whose nucleotide sequences are unrelated to, but are replicatively dependent upon the viral genome; they have a molecular parasitic relationship. Particularly, the KU1 strain may be used to protect plants against a particular viral strain of CMV, referred to as the KU2 strain. The attenuating properties of some satellite RNAs can be exploited to control viral diseases by preinoculating crops with an attenuating satellite RNA variant combined with virus. This technique can effectively protect against CMV disease in the field.
Linear calculation model for prediction of color rendering index performance associated with correlated color temperature of white light-emitting diodes with two phosphors (2012)

Linear calculation models are proposed and demonstrated to evaluate the color rendering index (CRI) performance associated with the correlated color temperature (CCT) of a white light emitting diode with two phosphors. All the three proposed models are simple and easy, and the error in predicting the CRI is within 1, while the deviation of the CCT is around 300 K and less. Such models can be useful in evaluating the chromatic performance of a specific recipe with two phosphors.
Identification of compounds that decrease the fidelity of start codon recognition by the eukaryotic translational machinery (2011)

Translation initiation in eukaryotes involves more than a dozen protein factors. Alterations in six factors have been found to reduce the fidelity of start codon recognition by the ribosomal preinitiation complex in yeast, a phenotype referred to as Sui(-). No small molecules are known that affect the fidelity of start codon recognition. Such compounds would be useful tools for probing the molecular mechanics of translation initiation and its regulation. To find compounds with this effect, we set up a high-throughput screen using a dual luciferase assay in S. cerevisiae. Screening of over 55,000 compounds revealed two structurally related molecules that decrease the fidelity of start codon selection by approximately twofold in the dual luciferase assay. This effect was confirmed using additional in vivo assays that monitor translation from non-AUG start codons. Both compounds increase translation of a natural upstream open reading frame previously shown to initiate translation at a UUG. The compounds were also found to exacerbate increased use of UUG as a start codon (Sui(-) phenotype) conferred by haploinsufficiency of wild-type eukaryotic initiation factor (eIF) 1, or by mutation in eIF1. Furthermore, the effects of the compounds are suppressed by overexpressing eIF1, which is known to restore the fidelity of start codon selection in strains harboring Sui(-) mutations in various other initiation factors. Together, these data strongly suggest that the compounds affect the translational machinery itself to reduce the accuracy of selecting AUG as the start codon.
Survey of Approaches for Postprocessing of Static Analysis Alarms (2022)

Static analysis tools have showcased their importance and usefulness in automated detection of defects. However, the tools are known to generate a large number of alarms which are warning messages to the user. The large number of alarms and cost incurred by their manual inspection have been identified as two major reasons for underuse of the tools in practice. To address these concerns plentitude of studies propose postprocessing of alarms: processing the alarms after they are generated. These studies differ greatly in their approaches to postprocess alarms. A comprehensive overview of the postprocessing approaches is, however, missing. In this article, we review 130 primary studies that propose postprocessing of alarms. The studies are collected by combining keywords-based database search and snowballing. We categorize approaches proposed by the collected studies into six main categories: clustering, ranking, pruning, automated elimination of false positives, combination of static and dynamic analyses, and simplification of manual inspection. We provide overview of the categories and sub-categories identified for them, their merits and shortcomings, and different techniques used to implement the approaches. Furthermore, we provide (1) guidelines for selection of the postprocessing techniques by the users/designers of static analysis tools; and (2) directions that can be explored by the researchers.
Radioisotope stents (2002)

Intracoronary stent placement following PTCA improves the long-term outcome of the treated patient, but in-stent restenosis remains problematic, especially in smaller vessels and longer lesions. Intravascular brachytherapy is a rapidly evolving field of research and clinical treatment, with a number of different irradiation techniques being used clinically. Many clinical data are now available that indicate clearly that either <FONT FACE="MetaPress 7">n</FONT> or <FONT FACE="MetaPress 7">g</FONT> radiation can reduce, and hopefully cure restenosis. The combination of radiation with stents has several distinct advantages over radiation with balloon angioplasty. It should be possible to use the stent as the radioactive source, as the radioactivity levels required by a permanent implant are extremely safe (< 1/1000 of the radioactivity of the least radioactive brachytherapy catheters). Once the stent has been implanted, the procedure is complete; catheter-based brachytherapy requires a second procedure after stent implantation. Unfortunately, in many human studies of the efficacy of radioisotope stents, although an excellent result in terms of a dramatically reduced neointima was seen in the stent, the incidence of an 'edge effect', with a reduced lumen just beyond the stent-edge occurred at an unacceptable rate. The encouraging results of the 'hot ends' study, where the stent ends were made more radioactive to reduce the edge effect, coincided with even more encouraging results from sirolimus drug-eluting stents. As a result, most work on radioisotope stents for the treatment of restenosis has been abandoned. There may, however, be applications for radioisotope stents in the treatment of malignant ducts, such as the esophagus and bronchia, which could justify further study of the devices.