gebhart/patrepeval huggingface dataset:
Suppression of the Random Narrow-band Noise With Mixed Frequencies in Partial Discharge With the Optimal Harmonic Wavelet Packet Transform (2013)

During the electrical equipment partial discharge(PD) online monitoring, when the frequencies of the multiple random periodic narrow-band noise lie in the monitor band of the sensor, it will seriously affect the credibility and accuracy of monitoring, but it's lack of good method to suppress this kind of noise. Therefore, this dissertation took advantage of the strict box-shaped spectral characteristic of harmonic wavelet and proposed a new PD de-noising method based on the optimal discrete harmonic wavelet packet transform(DHWPT). The energy of the narrow-band noise with different frequencies was concentrated in a single sub-band respectively and the sub-band containing narrow-band noise was identified according to the value of the sub-band Shannon entropy ratio. After the corresponding wavelet coefficients set to zero and reconstruction, the de-noised PD signal was obtained. The sub-band spectral leakage of discrete wavelet packet transform(DWPT) was overcome and the adaptive optimization decomposition of PD monitoring signals was achieved. Through de-noising processing of the random narrow-band noise with mixed frequencies that lied in the frequency band of the simulated and measured PD signal, and compared with the result of DWPT method, it shows that the energy loss and waveform distortion of the PD signal is smaller after the optimal DHWPT de-noising. This is beneficial to the subsequent pattern recognition of the PD signal, and the de-noising problem when the noise frequencies lie in the monitoring band is solved.
Epidermoid Carcinoma of the Lacrimal Sac (1956)

Both benign and tumors of the lacrimal sac are uncommon. Prior to 1938 Penman and Wolff1were able to find only 64 cases of lacrimal sac tumor described and reported in the world literature. Ashton, Choyce, and Fison2have stated that there were 73 such tumors reported up until 1950. In 1952 Duke-Elder3described an additional 60 cases of tumor of the lacrimal sac. However, 26 of these were granulomas. When these 26 cases are disregarded, the total number of cases of true neoplasms of the lacrimal sac is now in excess of 100. It appears that epithelial tumors are slightly commoner than nonepithelial tumors. It is probable that the diagnoses of carcinoma, malignant papilloma, and epithelioma represent different stages of cylindrical-cell carcinoma and that such tumors form about 50% of all reported cases. In most cases of lacrimal sac tumor described in the literature the
Synthetic Design and Characterization of Polycyclic Aromatic Compounds in Molecular and Extended System (2019)

The work presented herein focuses on the synthesis and characterization of polycyclic aromatic compounds for a wide variety of toxicological, analytical, and electronic applications. First, the modular synthesis of 12 dibenzo- and naphtho- fluoranthene polycyclic aromatic hydrocarbons (PAHs) via a Pd-catalyzed five-membered ring closing procedure is discussed. By understanding the various modes through which the Pd migrates during transformation, structural rearrangements were bypassed, obtaining regioselectivity through various redesigns in the synthetic route. Each compound in the serious was rigorously characterized via 1D/2D NMR, absorption and emission spectroscopy as well as cyclic voltammetry, which shows vast differences due to small structural changes between these constitutional isomers. Next, a series of polyphenylated organic ligands for zirconium metal organic frameworks is presented as materials for post-synthetic Scholl cyclodehydrogenation. Lastly, a series of organic linkers featuring covalently anchored redox-active pendants is explored for tuneable redox activity in Zr-based metal-organic frameworks. Thin-films were grown onto fluorine-doped tin-oxide glass electrodes and analyzed by cyclic voltammetry. This is the first reported pre-synthetic incorporation of covalently-bound ferrocenyl pendants into such a system. By attenuating the proportions of redox active and inactive links the oxidative peak currents could be tuned. This body of work represents a contribution toward the practical design and synthesis of polycyclic aromatic for a wide variety of analytical and electrochemical applications.
Box-Scan: An Efficient and Effective Algorithm for Box Dimension Measurement in Conveyor Systems using a Single RGB-D Camera (2019)

Different algorithms for object dimension measurement have recently been proposed, leveraging the power of RGB-D cameras. However, most of these algorithms are not suitable for deployment in the logistics industry: they are only able to deal with non-moving objects and/or the usage of multiple cameras introduces time delays. In this paper, we introduce Box-Scan, a novel algorithm that enables real-time box dimension measurement in conveyor systems using a single RGB-D camera. We discuss the industrial setting in which our algorithm needs to operate, as well as a prototype that integrates the proposed algorithm. Furthermore, we provide an analysis of the effectiveness of our prototype as a function of the conveyor speed, demonstrating that the prototype built comes with a maximum measurement error of less than 5% at a conveyor speed of 3.4 km/h.
Generalized suffix trees for biological sequence data: applications and implementation (1994)

This paper addresses applications of suffix trees and generalized suffix trees (GSTs) to biological sequence data analysis. We define a basic set of suffix trees and GST operations needed to support sequence data analysis. While those definitions are straightforward, the construction and manipulation of disk-based GST structures for large volumes of sequence data requires intricate design. GST processing is fast because the structure is content addressable, supporting efficient searches for all sequences that contain particular subsequences. Instead of laboriously searching sequences stored as arrays, we search by walking down the tree. We present a new GST-based sequence alignment algorithm, called GESTALT. GESTALT finds all exact matches in parallel, and uses best-first search to extend them to produce alignments. Our implementation experiences with applications using GST structures for sequence analysis lead us to conclude that GSTs are valuable tools for analyzing biological sequence data.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
A new inrush detection algorithm for transformer differential protection (2014)

Some power transformers, especially new designs with the core material improved for lower losses, produce low levels of second harmonic in their inrush magnetizing currents. Transformer differential relays face security problems when the second harmonic falls below the traditional 15 or 20 percent setting level. This paper derives a new protection method for detecting inrush conditions. The new algorithm is based on dwell-time periods in the inrush current. In each power cycle of a true inrush current, a period occurs where the differential current is both small and flat (dwell time). The new algorithm combines the absolute values of the instantaneous differential current with the absolute values of the differential current derivative to positively confirm both the low level and the flatness of the dwell-time currents. By utilizing the “flatness” feature of the waveshape, the algorithm performs well even under current transformer (CT) saturation. The new algorithm incorporates a separate method to cancel the inrush inhibit signal, allowing very fast operation for internal faults, particularly during inrush conditions. This dedicated element is based on a bidirectional instantaneous overcurrent principle.
Super Barrier Rectifier—A New Generation of Power Diode (2008)

The main principle behind the new super barrier rectifier (SBR) approach is to create the ldquosuperrdquo barrier for majority carriers without unreliable metal-semiconductor Schottky contact. The SBR technology creates such barrier in the MOS channel. The height of this barrier can be easily adjusted by the doping concentration in the channel. This paper demonstrates that the new power diodes combine high performance and high reliability for low voltage applications (below 100 V). The underlying concepts and analysis of operation are presented as well as the laboratory test results that compare performance and reliability between Schottky and the new SBR diode.
An RTP-based synchronized hypermedia live lecture system for distance education (1999)

In this article, we have introduced a “Live Synchronized Hypermedia Live Lecture (SHLL) System” using RTP to synchronize the live presentation of streaming video lecture, HTML-based lecture notes, and HTML page Navigation Events. The SHLL framework consists of three major modules: (1) SHLL Recorder- for recording the temporal information of the AV lecture and the HTML-based lecture notes navigation processes. (2) SHLL Event Server- for receiving, depositing, and multicasting SHLL events. (3) SHLL Browser- for presentation of the synchronized AV lecture and HTML-based lecture notes navigation.
Integrated X-band Sweeping Superheterodyne Receiver (1971)

The development of an integrated low-noise sweeping superheterodyne receiver is described. Based upon a receiver performance tradeoff study, a group of components were designed and integrated within a single housing occupying 5.9 in/sup 3/, less connectors. The integrated receiver weighs 6.4 oz, including magnets, and contains the following components: a wide-band low-noise tunnel-diode amplifer (TDA), an image-rejection balanced mixer, a varactor-tuned Gunn oscillator, a four-stage IF amplifier, and a quasi-complementary IF output filter. The housing also contains an interstage ferrite isolator, a bias distribution network with subminiature potentiometers, and a branch-line coupler. This coupler permits the injection of an external oscillator and allows the system to be evaluated outside the band covered by the internal Gunn oscillator. This receiver is the first kind to integrate within a minimum volume all the components necessary for a wide-band low-noise rapid-scan X-band imageless superheterodyne receiver. Varactor tuning permitted the entire receiver to be integrated in a package having about one fifth the weight and two fifths the volume of other similar receiver designs (e.g., a receiver utilizing a YIG-tuned oscillator).
Protein-Leaking Membranes for Hemodialysis (2005)

A new class of membranes that leak protein has been developed for hemodialysis. These membranes provide greater clearances of low molecular weight proteins and small protein-bound solutes than do conventional high-flux dialysis membranes but at the cost of some albumin loss into the dialysate. Protein-leaking membranes have been used in a small number of clinical trials. The results of these trials suggest that protein-leaking membranes improve anemia correction, decrease plasma total homocysteine concentrations, and reduce plasma concentrations of glycosylated and oxidized proteins. However, it is not clear yet that routine use of protein-leaking membranes is warranted. Specific uremic toxins that are removed by protein-leaking membranes but not conventional high-flux membranes have not been identified. It is also unclear whether protein-leaking membranes offer benefits beyond those obtained with conventional high-flux membranes used in convective therapies, such as hemofiltration and hemodiafiltration. Finally, the amount of albumin loss that can be tolerated by hemodialysis patients in a long-term therapy has yet to be determined. Protein-leaking membranes offer a new approach to improving outcomes in hemodialysis, but whether their benefits will outweigh their disadvantages will require more basic and clinical research.
In-Situ Measurement and Monitoring of Fiber Preform Permeability for Liquid Composite Molding (2000)

Abstract In a liquid composite molding (LCM) process such as resin transfer molding (RTM), quality control depends on an in-situ permeability profile of the fibrous preform taken just before resin injection. However, the conventional permeability measurement method, which uses liquid (oil or resin) as its working fluid, only measures the average preform permeability in an off-line mode. It cannot be used to create an in-situ permeability profile because of fiber pollution, and cannot be used to reveal local permeability variations of preform. This study develops a new permeability characterization method that uses gas flow and pressure profiles to measure preform permeability variation in a closed mold assembly. This method is based upon two research findings: (1) that the air permeability of a preform can be obtained through measuring the pressure profile of gas flow, and (2) that resin permeability is highly correlated with air permeability for the same fiber preform. In this paper, the validity of this method is discussed. Experimental results of gas permeability measurement with defective and defect-free preforms are presented, and quantitative models for correlation of gas permeability versus pressure profile and of gas permeability versus resin permeability are also provided. Finally, the efficacy of the proposed method is illustrated through experimental results.
Experimental verification of the <scp>TEMPTATION</scp> (temperature simulation) software tool (1998)

Predicting the temperature rise during electron-beam lithography (EBL) is an important practical problem in the development of new EBL systems and in the optimization of new exposure processes. The TEMPTATION software tool was developed. This software uses an analytic solution of heat propagation in a multilayered substrate. The software attains both high speed and good accuracy. Experimental verification of the software was done. Simulated data were verified versus experiments made with variably shaped EBL systems using three different resists. Change of effective absorbed energy due to heating was simulated and compared to published data. Good agreement of predicted and measured data for both long-range and short-range resist heating was shown.
Heavy Ion Injection for Stripping in the Central Region of the Cevil (1966)

We plan to inject a heavy ions beam, previously accelerated, into the median plane of the Orsay CEVIL. The heavily charged ions, obtained after the stripping operation in the central region of the cyclotron, can achieve an energy proportional to the square of the charge number. The choice of injection energy represents, in fact, a compromise between price and performance. The e/m ratio, chosen to be ≫ 0,1, will give the possibility of accelerating heavy ions up to bromine, and Krypton. The injector will be a linear accelerator, either pulsed or continuous. The distance between the linear accelerator and the cyclotron will allow the debunching of beam packets, at the RF frequency (25 Mc/s). The drift tube circuit is similar to the Manchester one. We have gone duply into the problem of the focusing system in order to obtain an accelerated beam of more than 100 μA. The chosen solution was strong focusing grids, obtained by means of two parallel tungsten strips placed at the beginning of each drift tube, each pair being at 90° to the preceeding one. The theoretical studies of this apparatus are well advanced at present ; the industrial production of the main elements is under way. The whole equipment should be completely finished in July 1967.
The technology and application of voice coil actuator (2011)

Based on the Lorentz Force Principle, voice coil actuator is a new-style versatile direct drive motors with special structure. Easy to be controlled, with high acceleration, high speed, high reliability, pony size, smooth force and fast actuation make it an ideal replacement for conventional electric motor. In this paper, the operation principle of voice coil actuator is expatiated, its sizing is discussed. And its current application fields is detailed.
Reduced E-cadherin expression contributes to the loss of p27 kip1 -mediated mechanism of contact inhibition in thyroid anaplastic carcinomas (2005)

In the present study, we have characterized several human thyroid cancer cell lines of different histotypes for their responsiveness to contact inhibition. We found that cells derived from differentiated carcinoma (TPC-1, WRO) arrest in G(1) phase at confluence, whereas cells derived from anaplastic carcinoma (ARO, FRO and FB1) continue to grow after reaching confluence. Furthermore, we provide experimental evidence that the axis, E-cadherin/beta-catenin/p27(Kip1), represents an integral part of the regulatory mechanism that controls proliferation at a high cell density, whose disruption may play a key role in determining the clinical behaviour of thyroid cancer. This conclusion derives from the finding that: (i) the expression of p27(Kip1) is enhanced at high cell density only in cells responsive to contact inhibition (TPC-1, WRO), but not in contact-inhibition resistant cells (ARO, FRO or FB1 cells); (ii) the increase in p27(Kip1) also resulted in increased levels of p27(Kip1) bound to cyclin E-Cdk2 complex, a reduction in cyclin E-Cdk2 activity and dephosphorylation of the retinoblastoma protein; (iii) antisense inhibition of p27(Kip1) upregulation at high cell density in confluent-sensitive cells completely prevents the confluence-induced growth arrest; (iv) proper expression and/or membrane localization of E-cadherin is observed only in cells responsive to contact inhibition (TPC-1, NPA, WRO) but not in unresponsive cells (ARO, FRO or FB1); (v) disruption of E-cadherin-mediated cell-cell contacts at high cell density induced by an anti-E-cadherin neutralizing antibody, inhibits the induction of p27(kip1) and restores proliferation in contact-inhibited cells; (vi) re-expression of E-cadherin into cells unresponsive to contact inhibition (ARO, FB1) induces a p27(kip1) expression and growth arrest. In summary, our data indicate that the altered response to contact inhibition exhibited by thyroid anaplastic cancer cells is due to the failure to upregulate p27(Kip1) in response to cell-cell interactions.
Total Synthesis of (+)-Amphidinolide J (1998)

ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTTotal Synthesis of (+)-Amphidinolide JDavid R. Williams and William S. KisselView Author Information Department of Chemistry Indiana University Bloomington, Indiana 47405 Cite this: J. Am. Chem. Soc. 1998, 120, 43, 11198–11199Publication Date (Web):October 16, 1998Publication History Received20 July 1998Published online16 October 1998Published inissue 1 November 1998https://pubs.acs.org/doi/10.1021/ja982572dhttps://doi.org/10.1021/ja982572drapid-communicationACS PublicationsCopyright © 1998 American Chemical SocietyRequest reuse permissionsArticle Views2271Altmetric-Citations97LEARN 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-AlertscloseSupporting Info (1)»Supporting Information Supporting Information SUBJECTS:Aldehydes,Anions,Chemical synthesis,Hydrocarbons,Organic synthesis Get e-Alerts
TNCs in Canada and Canadian TNCs (1983)

Abstract Canada's natural resources have been of vital importance to the economic development of the North American continent. Major US corporations have aquired control over important sectors of the Canadian minerals industry. At the same time Canadian resource corporations have expanded rapidly and made large investments abroad. The Raw Materials Group has selected extracts from two recent studies to illustrate this process.
µ‐Opioid Receptor Modulates Peptide Release From Rat Neurohypophysial Terminals By Inhibiting Ca<sup>2+</sup> Influx (2003)

The activation of opioid receptors in neurones of the central nervous system leads to a variety of effects including the modulation of diuresis and parturition, processes that are directly controlled by the hypothalamic-neurohypophysial system (HNS). The effects of mu-opioid receptor activation on peptide release, voltage-gated Ca2+ currents and intracellular calcium levels ([Ca2+]i) were studied in isolated nerve terminals of the HNS. The mu-receptor agonist, DAMGO ([d-Ala2,N-Me-Phe4,Gly5-ol]-enkephalin) inhibited high K+-induced peptide release in a dose-dependent manner, with oxytocin release being more sensitive to block than vasopressin release at all concentrations tested. The addition of the mu-receptor antagonist CTOP (d-Phe-Cys-Tyr-d-Trp-Orn-Thr-Pen-Thr amide) was able to overcome the inhibitory effects of DAMGO. By contrast to previous results, voltage-gated Ca2+ currents were sensitive to blockage by DAMGO and this inhibition was also prevented by CTOP. Furthermore, [Ca2+]i measurements with Fura-2 corroborated the inhibition by DAMGO of calcium entry and its reversal by the micro -receptor antagonist in these nerve terminals. Thus, the decrease in neuropeptide release, particularly for oxytocin, induced by the activation of mu-opioid receptors in neurohypophysial terminals is mediated, at least in part, by a corresponding decrease in Ca2+ entry due to the inhibition of voltage-gated Ca2+ channels.
A single stage single switch power factor correction converter (2002)

The flyback-flyback single stage converter operated in DCM+DCM is easy to control bus voltage, but hard to control switch stress. We propose a new converter having low voltage stress on its switch. The flyback converter is simplified into buck-boost form. Also, the PFC flyback transformer is replaced by an inductor. The switches of both PFC and DC/DC stages are merged, and a diode is used to force the direction of power flow. A 30 W prototype is built to evaluate the performance.
S100A8-targeting siRNA enhances arsenic trioxide-induced myeloid leukemia cell death by down-regulating autophagy (2011)

Chemoresistance has become a major obstacle to the successful treatment of leukemia. Autophagy, a regulated process of degradation and recycling of cellular constituents, has recently caught increasing attention for its roles in conferring resistance to various commonly used anticancer therapies. Here we showed that the member of the S100 calcium-binding protein family, S100A8, is a critical regulator of chemoresistance in the autophagy process. It positively correlated with the clinical status in childhood acute myeloblastic leukemia (AML) and it was released from leukemia cells after chemotherapy-induced cytotoxicity. Knockdown of S100A8 expression increased the sensitivity of leukemia cells to chemotherapy and apoptosis. Moreover, suppressing S100A8 expression decreased autophagy as evaluated by the increased expression of the autophagic marker microtubule-associated protein light chain 3 (LC3)-II, degradation of SQSTM1/Sequestosome 1 (p62) and formation of autophagosomes. Furthermore, stimuli that enhanced reactive oxygen species (ROS) promoted cytosolic translocation of S100A8 and thereby enhanced autophagy. S100A8 directly interacted with the autophagy protein Beclin1 displacing Bcl-2. These results suggest that S100A8 is a critical pro-autophagic protein that enhances cell survival and regulates chemoresistance in leukemia cells likely through disassociating the Beclin1-Bcl-2 complex.