gebhart/patrepeval huggingface dataset:
Insulation properties of a CO2/N250% SF6gas mixture in a nonuniform field (2002)

Abstract This paper describes partial discharge (PD) inception and breakdown voltage characteristics of a CO 2 /N 2 /SF 6 gas mixture in a nonuniform field. These voltage characteristics were investigated with ac high voltage by changing the mixture rate of each gas of CO 2 , N 2 , and SF 6 gas and the gas pressure from 0.1 MPa to 0.6 MPa. It was found that adding a small amount of CO 2 gas into a N 2 /SF 6 mixture causes a drastic increase in the breakdown voltage. For instance, when the mixture rate of SF 6 in N 2 /SF 6 gas mixture is 50%, with the addition of 1% CO 2 the maximum breakdown voltage becomes 1.31 and 1.15 times higher than that of a 50% N 2 /50% SF 6 gas mixture and pure SF 6 gas, respectively. Moreover, those voltage characteristics of a CO 2 /N 2 /SF 6 gas mixture were also investigated by changing the electric field utilization factor as well as by applying positive and negative standard lightning impulse voltages in order to discuss the corona stabilization effect, which seems to be one reason for the drastic increase in the breakdown voltage. These results and breakdown mechanism of the CO 2 /N 2 /SF 6 gas mixture are discussed on the basis of the corona stabilization effect and the dissociation energies of the component gases by observing PD light images, PD light intensities through a blue and red filter, and PD current waveforms. © 2002 Wiley Periodicals, Inc. Electr Eng Jpn, 140(3): 34–43, 2002; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.10019
Trehalose-producing Operon treYZ from Arthrobacter ramosus S34 (2001)

Arthrobacter ramosus S34, which produces trehalose from maltooligosaccharide, was isolated. A trehalose-producing operon, treYZ, was cloned from the genome. Expression experiments with treY and treZ confirmed that they coded malto-oligosyltrehalose synthase and malto-oligosyltrehalose trehalohydrolase, respectively. The amino acid sequence of TreY from A. ramosus S34 and that from Arthrobacter sp. Q36 did not show high identity, nor did those of TreZ.
The Isometric Self-Organizing Map for 3D Hand Pose Estimation (2006)

We propose an isometric self-organizing map (ISO-SOM) method for nonlinear dimensionality reduction, which integrates a self-organizing map model and an ISOMAP dimension reduction algorithm, organizing the high dimension data in a low dimension lattice structure. We apply the proposed method to the problem of appearance-based 3D hand posture estimation. As a learning stage, we use a realistic 3D hand model to generate data encoding the mapping between the hand pose space and the image feature space. The intrinsic dimension of such nonlinear mapping is learned by ISOSOM, which clusters the data into a lattice map. We perform 3D hand posture estimation on this map, showing that the ISOSOM algorithm performs better than traditional image retrieval algorithms for pose estimation. We also show that a 2.5D feature representation based on depth edges is clearly superior to intensity edge features commonly used in previous methods.
Hopping mechanism of particles and cells escaping from optoelectronic tweezer traps (2018)

Optoelectronic tweezers (OET) is an opto-electro-fluidic micromanipulation technology that uses light-induced dielectrophoresis (DEP) for touch-free actuation of micro-scale objects in physical, chemical and biomedical studies. In this work, we introduce a new method to evaluate the behavior of particles trapped in OET traps and used this technique to study their escape mechanism. Particles experiencing negative DEP were made to move in a circular path on a microscope stage, such that the particles’ velocities and trajectories could be observed under different conditions. At high velocities, particles were observed to escape the trap vertically (into the suspending medium) before settling back onto the surface. Three-dimensional numerical simulations of electrical field distribution indicated that the vertical displacement phenomenon occurs when the particle experiences the strongest DEP force at the boundary of the light pattern, lifting the trapped particle to a region where viscous drag exceeds the local horizontal DEP force, thereby forcing it to escape OET confinement. Similar ‘hopping’ phenomena were also observed for cells and particles of different sizes. We propose that the escape mechanism clarified in this work is a general one for objects manipulated by negative DEP in an OET trap, which will be important to consider in the future design of OET-enabled micromanipulation tools for a wide range of applications.
Chip layout design of a Josephson LSI circuit for examining high-speed operability by using a standard cell automatic placement and routing technique (1994)

A chip layout design technique for a high-speed Josephson LSI circuit using an automatic placement and routing technique with a standard cell method has been developed. A chip layout design of a Josephson LSI circuit with 1500 gates for examining high-speed operability with a 1 GHz clock frequency has been successfully obtained. Related to high-frequency power on a high-speed Josephson LSI circuit, a dividing method for a circuit and a balancing method for power loads are proposed.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Application of narrow-beam antennas and fractional loading factor in cellular communication systems (2001)

It is well known that cellular system capacity can be increased by reducing the cell cluster size N. Reducing the cluster size, however, increases cochannel interference. In the literature, several techniques have been proposed for controlling the cochannel interference and simultaneously reducing the cluster size. In this paper, we combine two proposed capacity improvement methods and explore the effectiveness of reducing cochannel interference using narrow-beam antennas ("smart antennas") with the fractional loading factor. As shown in this paper, it is possible to increase capacity by many times by decreasing the cluster size (i.e. increasing frequency reuse), although the proper combination of antenna specifications and fractional loading is surprisingly nonintuitive. The first cochannel mitigation technique uses base-station antennas with narrow beams in the direction of the desired mobile stations and significant side lobe attenuation in the direction of undesired users. The second technique exploits the fact that interference is related to the loading factor p/sub ch/, which defines the probability that a given channel is in use within a cell, We show that large capacity gains with respect to a reference cellular system (N=7, three sectors per cell) can be obtained by combining these two techniques. This paper provides insight for system-level deployment of high-capacity cellular systems and can be extended to fixed wireless systems as well.
Incorporating Heteroatoms into Fluorene-type Conjugated Polymers for Enhanced Photocatalytic Hydrogen Production (2019)

The photocatalytic performance of fluorene-type polymer photocatalysts for hydrogen production from water in the presence of a sacrificial hole scavenger is significantly improved by the incorporation of heteroatoms into the bridge-head. This improvement can be explained by a combination of factors, such as changes in thermodynamic driving-force, particle size, dispersibility under photocatalytic conditions, and light absorption.
Receive Antenna Selection for Time-Varying Channels Using Discrete Prolate Spheroidal Sequences (2012)

Receive antenna selection (AS) has been shown to maintain the diversity benefits of multiple antennas while potentially reducing hardware costs. However, the promised diversity gains of receive AS depend on the assumptions of perfect channel knowledge at the receiver and slowly time-varying fading. By explicitly accounting for practical constraints imposed by the next-generation wireless standards such as training, packetization and antenna switching time, we propose a single receive AS method for time-varying fading channels. The method exploits the low training overhead and accuracy possible from the use of discrete prolate spheroidal (DPS) sequences based reduced rank subspace projection techniques. It only requires knowledge of the Doppler bandwidth, and does not require detailed correlation knowledge. Closed-form expressions for the channel prediction and estimation error as well as symbol error probability (SEP) of M-ary phase-shift keying (MPSK) for symbol-by-symbol receive AS are also derived. It is shown that the proposed AS scheme, after accounting for the practical limitations mentioned above, outperforms the ideal conventional single-input single-output (SISO) system with perfect CSI and no AS at the receiver and AS with conventional estimation based on complex exponential basis functions.
Robust hashing for music copyright protection by combining beat segmentation and chroma (2010)

Time-scale modification and pitching shifting are two recognized challenging attacks to music copyright protection. To resist them simultaneously, a novel robust hashing method is proposed by combining the strength of music beat segmentation and chroma-based music feature. These two measures are aimed at solving the problem of desynchronization and frequency shifting respectively. Moreover, two layers of scrambling are performed to ensure the security. Experiments exhibit remarkable robustness against various attacks including pitch [email protected]%, time-scale [email protected]%, and [email protected]/10 etc.
Structural and functional ramifications of antigenic drift in recent SARS-CoV-2 variants (2021)

The protective efficacy of neutralizing antibodies (nAbs) elicited during natural infection with SARS-CoV-2 and by vaccination based on its spike protein has been compromised with emergence of the recent SARS-CoV-2 variants. Residues E484 and K417 in the receptor-binding site (RBS) are both mutated in lineages first described in South Africa (B.1.351) and Brazil (B.1.1.28.1). The nAbs isolated from SARS-CoV-2 patients are preferentially encoded by certain heavy-chain germline genes and the two most frequently elicited antibody families (IGHV3-53/3-66 and IGHV1-2) can each bind the RBS in two different binding modes. However, their binding and neutralization are abrogated by either the E484K or K417N mutation, whereas nAbs to the cross-reactive CR3022 and S309 sites are largely unaffected. This structural and functional analysis illustrates why mutations at E484 and K417 adversely affect major classes of nAbs to SARS-CoV-2 with consequences for next-generation COVID-19 vaccines.
Chronic exposure of astrocytes to interferon-α reveals molecular changes related to Aicardi–Goutières syndrome (2013)

Aicardi-Goutières syndrome is a genetically determined infantile encephalopathy, manifesting as progressive microcephaly, psychomotor retardation, and in ∼25% of patients, death in early childhood. Aicardi-Goutières syndrome is caused by mutations in any of the genes encoding TREX1, RNASEH2-A, -B, -C and SAMHD1, with protein dysfunction hypothesized to result in the accumulation of nucleic acids within the cell, thus triggering an autoinflammatory response with increased interferon-α production. Astrocytes have been identified as a major source of interferon-α production in the brains of patients with Aicardi-Goutières syndrome. Here, we study the effect of interferon-α treatment on astrocytes derived from immortalized human neural stem cells. Chronic interferon-α treatment promoted astrocyte activation and a reduction in cell proliferation. Moreover, chronic exposure resulted in an alteration of genes and proteins involved in the stability of white matter (ATF4, eIF2Bα, cathepsin D, cystatin F), an increase of antigen-presenting genes (human leukocyte antigen class I) and downregulation of pro-angiogenic factors and other cytokines (vascular endothelial growth factor and IL-1). Interestingly, withdrawal of interferon-α for 7 days barely reversed these cellular alterations, demonstrating that the interferon-α mediated effects persist over time. We confirmed our in vitro findings using brain samples from patients with Aicardi-Goutières syndrome. Our results support the idea of interferon-α as a key factor in the pathogenesis of Aicardi-Goutières syndrome relating to the observed leukodystrophy and microangiopathy. Because of the sustained interferon-α effect, even after withdrawal, therapeutic targets for Aicardi-Goutières syndrome, and other interferon-α-mediated encephalopathies, may include downstream interferon-α signalling cascade effectors rather than interferon-α alone.
Model-independent measurement of mixing parameters in D0 → K S 0 π+π− decays (2016)

The first model-independent measurement of the charm mixing parameters in the decay D 0 K 0 S + -is reported, using a sample of pp collision data recorded by the LHCb experiment, corresponding to an integrated luminosity of 1.0 fb -1 at a centre-of-mass energy of 7 TeV. The measured values are x = (-0.86 0.53 0.17) 10 -2 , y = (+0.03 0.46 0.13) 10 -2 , where the first uncertainties are statistical and include small contributions due to the external input for the strong phase measured by the CLEO collaboration, and the second uncertainties are systematic.
In vivo demonstration of magnetic guidewire steerability in a MRI system with additional gradient coils (2015)

This first evaluation of selective catheterization of aortic branches with a magnetic guidewire provided a successful steering in the less angled side branches and this modified guidewire was advanced in the aorta without inadvertent selective catheterization when manipulated without magnetic actuation.
The distribution of immunoreactive topoisomerase II Protein in human tissues and neoplasms. (1992)

Western blotting experiments with topoisomerase II antiserum were performed to measure type II topoisomerase content in human tissues. In this study, antiserum produced against the C-terminus of recombinant HeLa topoisomerase II recognized both p170 and p180 forms of the enzyme. Antisera specifically made against p180 selectively recognized that enzyme form. By using these antisera, a remarkable difference in topoisomerase content between the tissues studied was observed. Tissues with a high proportion of cycling cells contained predominantly the p170 form of the enzyme, but also smaller amounts of p180. In terminally differentiated organs or in neoplasms with a low percentage of cycling cells, topoisomerase II immunoprotein was not detected in whole tissue extracts. In term human placenta, this was because this tissue contained predominantly the p180 enzyme form, yet the concentration of this form of the enzyme was apparently in too low a concentration to be detected by the antibody in crude extracts. It was readily observed after concentration by chromatography on hydroxylapatite.
A 65nm CMOS 60 GHz Class F-E Power Amplifier for WPAN Applications (2020)

This work presents a two-stage 60 GHz Power Amplifier designed in a 65nm CMOS technology dedicated to low cost Wireless Personal Area Network (WPAN) applications. In order to provide a high efficiency operation, the PA is based on a Class E power stage. A Class F driver stage is also designed to provide a square waveform signal to the Class-E power stage. To realize the output networks of both driver and power stage at 60 GHz, distributed elements are used instead of lumped elements. The post-layout simulation results show a saturated output power of 15 dBm with a peak PAE of 26% at 60 GHz. It achieves a gain of 15dB at 60 GHz.
Design and Synthesis of 5‐Morpholino‐Thiophene‐Indole/ Oxindole Hybrids as Cytotoxic Agents (2020)

Abstract A series of new 5‐morpholino‐thiophene‐indole/oxindole hybrids has been designed and synthesized using molecular hybridization approach. The synthesized compounds were evaluated for their in vitro cytotoxic potential against selected human cancer cell lines such as triple negative breast (MDA‐MB‐231), liver (SK‐Hep‐1), breast (MCF‐7), colon (HCT‐116) mouse melanoma (B16F10) and compared with normal human lung epithelial cell line (BEAS‐2B). Among the tested hybrids 11a – o and 13a – d , the compound 11f [( Z )‐ N ′‐((1‐Benzyl‐1 H ‐indol‐3‐yl)methylene)‐5‐morpholino‐4‐( p ‐tolyl)thiophene‐2‐carbohydrazide] showed significant cytotoxic activity on HCT‐116 cancer cell line with IC 50 value of 8.98 ± 0.6 μM. Cell cycle analysis revealed that compounds arrested the cell cycle in sub‐G1 phase. Moreover, JC‐1, acridine orange, DAPI nucleic acid, DCFDA staining studies suggest that one of the representative compound 11 f inhibited the cell proliferation through apoptosis. Further, molecular docking and relative viscosity studies of 11 f indicated the minor groove binding towards CT‐DNA.
Implementation of a Reputation System for Pervasive Social Networking (2011)

A Mobile Ad Hoc Network (MANET) is becoming a practical platform for pervasive social networking. People chat with each other via MANET for instant social activities. How to help mobile users to build up trust in such an environment is becoming an important issue. We develop a reputation system for pervasive social networking. We implement it by applying Nokia N900 smartphones as MANET nodes based on a distributed energy-efficient social networking platform. Our system can indicate each user's local reputation during chatting. It also provides detailed reputation information and supports on-chat voting and afterwards voting. This demo paper introduces the system design and its principal functionalities.
THz generation in a photo-activated periodically-biased semiconductor (2010)

A high-intensity short laser pulse, propagating obliquely to the surface of a periodically biased semiconductor array can photo-ionize the medium and generate a periodic current density. The transient current density can be a source of THz radiation over a wide frequency range.
A simplified Radioimmunoassay for serum aldosterone (1977)

A simplified direct radioimmunoassay system for serum aldosterone measurement was developed by using radio iodine-labeled aldosterone and highly specific antiserum to aldosterone.8-anilino-1-naphthalene sulfonic acid (ANS) was used to prevent the binding of aldosterone to serum proteins. Polyethylene glycol was used to separate the antibody-bound aldosterone from the free aldosterone as the precipitant.The minimum measurable concentration of aldosterone is 30pg/ml of serum by short incubation method (at 25°C for 3hr incubation) and 15pg/ml of serum by long incubation method (at 4°C for 20hr incubation) respectively.Present radioimmunoassay eliminates extraction of the aldosterone from serum and chromatographic separation procedures, and requires only 0.1ml of serum sample for assay.The intra-assay precision was C. V. 6.9% (average of 4 samples) and the inter-assay precision was C. V. 10.7% (average of 4 samples).There is an excellent correlation between the extraction method and this direct method in serum aldosterone value obtained (correlation coefficient, 0.96). The normal value was 36.8±25.9 pg/ml (recumbent) and 113.6±61.5pg/ml (upright).
Viscoelastic properties of aromatic ionomers (1981)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTViscoelastic properties of aromatic ionomersM. Rigdahl, B. A. Reinhardt, F. W. Harris, and A. EisenbergCite this: Macromolecules 1981, 14, 3, 851–855Publication Date (Print):May 1, 1981Publication History Published online1 May 2002Published inissue 1 May 1981https://pubs.acs.org/doi/10.1021/ma50004a073https://doi.org/10.1021/ma50004a073research-articleACS PublicationsRequest reuse permissionsArticle Views68Altmetric-Citations5LEARN 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
Line width roughness reduction by rational design of photoacid generator for sub-millisecond laser post-exposure bake (2014)

Sub-millisecond laser post-exposure bake (PEB) is an alternative technology to address the excessive acid diffusion for chemically amplified photoresist systems. By rationally designing the resist, laser post-exposure bake is able to improve the resolution and reduce the line width roughness (LWR) compared to patterns exposed under the same conditions but using conventional hotplate PEB. It was found that only the resist with high deprotection activation energy and low diffusion activation energy showed improved performance using laser PEB. Accordingly, a PAG was designed to have low acid diffusivity by binding the counter ions to a molecular glass core while keeping photophysical properties and processing conditions similar to a conventional PAG. By reducing the diffusivity of the counter ions, the PAG was able to further reduce LWR by 60% using laser PEB.
Adobe PDF - Supplementary_Data.pdf from Antitumor Efficacy Profile of PKI-402, a Dual Phosphatidylinositol 3-Kinase/Mammalian Target of Rapamycin Inhibitor (2023)

Adobe PDF - Supplementary_Data.pdf from Antitumor Efficacy Profile of PKI-402, a Dual Phosphatidylinositol 3-Kinase/Mammalian Target of Rapamycin Inhibitor
Design of a 1 Tb/s Superchannel Coherent Receiver (2016)

We describe the design of a trained and pilot-aided digital coherent receiver, capable of detecting a 1 Tb/s superchannel with a single optical front-end. Algorithms for receiver training are described, which calculate the equalizer coefficients, subchannel SNRs, and centroids of the transmitted constellations. Algorithms for pilot-aided operation are then described in detail, providing pilot-aided constant modulus equalization and joint carrier-phase estimation over several coherent subchannels. We demonstrate the detection of a superchannel with net bit rate in excess of 1 Tb/s with a single coherent receiver. An <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$11\times 10$ </tex-math></inline-formula> GBd DP-64QAM Nyquist superchannel is used, with 1.32 Tb/s gross bit rate.