gebhart/patrepeval huggingface dataset:
Technetium-phosphonite complexes. Synthesis of hexacoordinate technetium(II) and technetium(III) complexes of diethyl phenylphosphonite and the crystal structure of dichlorotetrakis(diethyl phenylphosphonite)technetium(II) (1977)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTechnetium-phosphonite complexes. Synthesis of hexacoordinate technetium(II) and technetium(III) complexes of diethyl phenylphosphonite and the crystal structure of dichlorotetrakis(diethyl phenylphosphonite)technetium(II)Ulderico Mazzi, Dore A. Clemente, Giuliano Bandoli, Luciano Magon, and Angelo A. OrioCite this: Inorg. Chem. 1977, 16, 5, 1042–1048Publication Date (Print):May 1, 1977Publication History Published online1 May 2002Published inissue 1 May 1977https://pubs.acs.org/doi/10.1021/ic50171a016https://doi.org/10.1021/ic50171a016research-articleACS PublicationsRequest reuse permissionsArticle Views43Altmetric-Citations23LEARN 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 Get e-Alerts
The General Characteristics of a Birnavirus Isolated from Cultured Loach(Misgurnus anguillicaudatus) in Taiwan. (1993)

A birnavirus was isolated from cultured loach (Misgurnus anguillicaudatus) in Taiwan with TO-2 cell line. Evident cytopathic effects of the virus, including karyopycnosis, cytoplasmic inclusion bodies and cell destruction, were observed in TO-2 cells by light microscopy. The naked icosahedral virion layered by a single capsid with a diameter of 69 ± 4 nm was observed by electron microscopy. Sometimes, complete virions were found to be enclosed by lysosomes to form cytolysome. The virus propagated in several fish cell lines and its replication cycle was completed in 24 hours at its optimum multiplication temperature of 25°C. This virus has a two segmented double-stranded RNA genome and 3 structural proteins, showing 1.33 g/cm3 buoyant density in CsCl. The chemico-physical properties of the virus together with the result of cross neutralization test indicated that it is a birnavirus and is closely related to Ab serotype of infectious pancreatic necrosis virus (IPNV).
Experimental motion planning in airpath control for HCCI engine (2006)

A motion planning based control strategy is proposed for the airpath control of turbocharged diesel engines using exhaust gas recirculation (EGR). The considered model uses simple balance equations. The fully actuated dynamics are easily inverted, yielding straightforward open-loop control laws. This approach is complemented by experimentally derived lookup tables to cast the driver's requests into transients between operating points. Estimation of required variables from the intake pressure measurements is addressed and experimental tests are reported on a 4-cylinder engine in homogeneous charge compression ignition (HCCI) mode. Conclusions stress the possibility of taking into account the non-minimum phase effects of this system by a simple, yet efficient in practice, control law. Observed transients are accurate and fast
[Ultrasonic scanning in the diagnosis of hepatic alveococcosis]. (1989)

The echotomographic picture of liver alveococcosis was described on the basis of investigation of 132 patients (the diagnosis in 22 was verified by biopsy). Some features of alterations were determined over time. Radionuclide scanning was shown to be less effective in the diagnosis of liver alveococcosis than echotomography.
On the evaluation of speech recognizers and data bases using a reference system (2005)

The most straightforward way to compare the performance of speech recognizers is to test them with an identical data base. An agreement on such data base to be used as a standard could be difficult to reach. An alternative is to agree on a set of algorithms (a reference system) and compare each system to this reference. Furthermore, the reference is used to quantify the difficulty of the test sets. Differences in performance between the system under test and the reference will be meaningful to the speech community if the reference system is made widely available. The complete specifications (in FORTRAN) of a set of speech analysis and pattern discrimination algorithms are proposed here for this purpose. This recognizer uses dynamic time warping to optimize the match between unknown and reference utterances. Every utterance is coded as a sequence of vectors of cepstral coefficients. These coefficients are obtained from a short time power spectrum expressed on a mel frequency scale.
OpenQFlow: Scalable OpenFlow with Flow-Based QoS (2013)

OpenFlow, originally proposed for campus and enterprise network experimentation, has become a promising SDN architecture that is considered as a widely-deployable production network node recently. It is, in a consequence, pointed out that OpenFlow cannot scale and replace today's versatile network devices due to its limited scalability and flexibility. In this paper, we propose OpenQFlow, a novel scalable and flexible variant of OpenFlow. OpenQFlow provides a fine-grained flow tracking while flow classification is decoupled from the tracking by separating the inefficiently coupled flow table to three different tables: flow state table, forwarding rule table, and QoS rule table. We also develop a two-tier flow-based QoS framework, derived from our new packet scheduling algorithm, which provides performance guarantee and fairness on both granularity levels of micro- and aggregate-flow at the same time. We have implemented OpenQFlow on an off-the-shelf microTCA chassis equipped with a commodity multicore processor, for which our architecture is suited, to achieve high-performance with carefully engineered software design and optimization.
Motion and Disparity Compensated Coding for Multiview Video (2007)

We investigate the rate-distortion efficiency of motion and disparity compensated coding for multiview video. Disparity compensation exploits the correlation among the view sequences and motion compensation makes use of the temporal correlation within each view sequence. We define a matrix of pictures with <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">N</i> view sequences, each with K temporally successive pictures. For experimental coding purposes, a scheme based on H.264/AVC is devised. We assess the overall rate-distortion efficiency for matrices of pictures of various dimensions ( <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">N</i> , <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">K</i> ). Moreover, we discuss the impact of inaccurate disparity compensation within a matrix of pictures. Finally, we propose and discuss a theoretical model for multiview video coding that explains our experimental observations. Performance bounds are presented for high rates.
Profiling hoax callers (2016)

Hoax calls annually cost law enforcement and security agencies over a billion dollars, and sometimes lives. Bogus bomb threats, “swatting” calls to the police, hoax calls to the coast guard etc. cause these agencies to respond, deploying personnel and resources needlessly. The response itself could cause direct danger to innocent citizens, while also drawing resources away from genuine emergencies that could otherwise have been expeditiously attended to. Law enforcement agencies would hence benefit greatly from technologies that could assist them in identifying the circumstances of a hoax call, or identifying the hoax callers themselves. These could lead to more informed responses to hoax calls, or to the arrest of the perpetrators. In this paper we describe technologies to profile hoax callers. Profiling in this context refers to the estimation of the speaker's personal traits, and of their physical surroundings, from their voice. This is a difficult task, particularly because the hoax calls are often very short, degraded in audio quality, and highly dramatized, with the callers attempting to disguise their voices to prevent identification. We present aspects of current technology in various fields that we have applied to this problem, and the challenges that remain in formulating reliable solutions.
Sterols. CIV. Diosgenin from Certain American Plants (1940)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSterols. CIV. Diosgenin from Certain American PlantsRussell E. Marker, D. L. Turner, and Paul R. UlshaferCite this: J. Am. Chem. Soc. 1940, 62, 9, 2542–2543Publication Date (Print):September 1, 1940Publication History Published online1 May 2002Published inissue 1 September 1940https://pubs.acs.org/doi/10.1021/ja01866a076https://doi.org/10.1021/ja01866a076research-articleACS PublicationsRequest reuse permissionsArticle Views243Altmetric-Citations12LEARN 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
Smad3 mediates the TGF‐β‐induced contraction of type I collagen gels by mouse embryo fibroblasts (2003)

Abstract TGF‐β signals through TGF‐β receptors and Smad proteins. TGF‐β also augments fibroblast‐mediated collagen gel contraction, an in vitro model of connective tissue remodeling. To investigate the importance of Smad2 or Smad3 in this augmentation process, embryo‐derived fibroblasts from mice lacking expression of Smad2 or Smad3 genes were cast into native type I collagen gels. Fibroblast‐populated gels were then released into 0.2% FCS‐DMEM alone or with recombinant human TGF‐β1, β2, β3, or recombinant rat PDGF‐BB. Gel contraction was determined using an image analyzer. All three isoforms of TGF‐β significantly augmented contraction of collagen gels mediated by fibroblasts with genotypes of Smad2 knockout (S2KO), Smad2 wildtype (S2WT), and Smad3 wildtype (S3WT), but not Smad3 knockout (S3KO) mice. PDGF‐BB augmented collagen gel contraction by all fibroblast types. These results suggest that expression of Smad3 but not Smad2 may be critical in TGF‐β augmentation of fibroblast‐mediated collagen gel contraction. Thus, the Smad3 gene could be a target for blocking contraction of fibrotic tissue induced by TGF‐β. Cell Motil. Cytoskeleton 54:248–253, 2003. © 2003 Wiley‐Liss, Inc.
The ABA-1 allergen of <i>Ascaris lumbricoides</i>: sequence polymorphism, stage and tissue-specific expression, lipid binding function, and protein biophysical properties (2000)

The ABA-1 protein of Ascaris lumbricoides (of humans) and Ascaris suum (of pigs) is abundant in the pseudocoelomic fluid of the parasites and also appears to be released by the tissue-parasitic larvae and the adult stages. The genes encoding the polyprotein precursor of ABA-1 (aba-1) were found to be arranged similarly in the two taxa, comprising tandemly repeating units encoding a large polyprotein which is cleaved to yield polypeptides of approximately 15 kDa which fall into 2 distinct classes, types A and B. The polyprotein possibly comprises only 10 units. The aba-1 gene of A. lumbricoides is polymorphic, and the majority of substitutions observed occur in or near predicted loop regions in the encoded proteins. mRNA for ABA-1 is present in infective larvae within the egg, and in all parasitic stages, but was not detectable in unembryonated eggs. ABA-1 mRNA was confined to the gut of adult parasites, and not in body wall or reproductive tissues. Recombinant protein representing a single A-type unit for the A. lumbricoides aba-1 gene was produced and found to bind retinol (Vitamin A) and a range of fatty acids, including the pharmacologically active lipids lysophosphatidic acid, lysoplatelet activating factor, and there was also evidence of binding to leukotrienes. It failed to bind to any of the anthelmintics screened. Differential Scanning Calorimetry showed that the recombinant protein was highly stable, and unfolded in a single transition at 90.4 degrees C. Analysis of the transition indicated that the protein occurs as a dimer and that the dimer dissociates simultaneously with the unfolding of the monomer units.
Multimodal UAV detection: study of various intrusion scenarios (2017)

Small unmanned aerial vehicles (UAVs) are becoming increasingly popular and affordable the last years for professional and private consumer market, with varied capacities and performances. Recent events showed that illicit or hostile uses constitute an emergent, quickly evolutionary threat. Recent developments in UAV technologies tend to bring autonomous, highly agile and capable unmanned aerial vehicles to the market. These UAVs can be used for spying operations as well as for transporting illicit or hazardous material (smuggling, flying improvised explosive devices). The scenario of interest concerns the protection of sensitive zones against the potential threat constituted by small drones. In the recent past, field trials were carried out to investigate the detection and tracking of multiple UAV flying at low altitude. Here, we present results which were achieved using a heterogeneous sensor network consisting of acoustic antennas, small FMCW RADAR systems and optical sensors. While acoustics and RADAR was applied to monitor a wide azimuthal area (360°), optical sensors were used for sequentially identification. The localization results have been compared to the ground truth data to estimate the efficiency of each detection system. Seven-microphone acoustic arrays allow single source localization. The mean azimuth and elevation estimation error has been measured equal to 1.5 and -2.5 degrees respectively. The FMCW radar allows tracking of multiple UAVs by estimating their range, azimuth and motion speed. Both technologies can be linked to the electro-optical system for final identification of the detected object.
Microtubule dynamics in vitro are regulated by the tubulin isotype composition. (1994)

The growing and shortening dynamics of individual bovine brain microtubules at their plus ends at steady state in vitro, assembled from isotypically pure alpha beta II, alpha beta III, or alpha beta IV tubulin dimers, were determined by differential interference contrast video microscopy. Microtubules assembled from the purified alpha beta III isotype were considerably more dynamic than microtubules made from the alpha beta II or alpha beta IV isotypes or from unfractionated phosphocellulose-purified tubulin. Furthermore, increasing the proportion of the alpha beta II isotype in a mixture of the alpha beta II and alpha beta III isotypes suppressed microtubule dynamics, demonstrating that microtubule dynamics can be influenced by the tubulin isotype composition. The data support the hypothesis that cells might determine the dynamic properties and functions of its microtubules in part by altering the relative amounts of the different tubulin isotypes.
A CAVITY RING-DOWN SPECTROSCOPY MERCURY CONTINUOUS EMISSION MONITOR (2003)

Accurate reporting of mercury concentration requires a detailed model that includes experimental parameters that vary, such as: pressure, temperature, concentration, absorption cross-section, and isotopic structure etc. During this quarter a theoretical model has been developed to model the 253.7 nm mercury transition. In addition, while testing the interferent species SO{sub 2}, SRD was able to determine the absorption cross-section experimentally and add this to the theoretical model. Assuming that the baseline losses are due to the mirror reflectivity and SO{sub 2}, SRD can now determine the concentrations of both mercury and SO{sub 2} from the data taken. For the CRD instrument to perform as a continuous emission monitor it will be required to monitor mercury concentrations over extended periods of time. The stability of monitoring mercury concentrations over time with the CRD apparatus was tested during the past quarter. During a test which monitored the mercury concentration every 2 seconds it was found that the standard deviation, of a signal from about 1.25 ppb Hg, was only 30 ppt. SRD continued interferent gas testing during this past quarter. This included creating a simulated flue gas composed of the gases tested individually by SRD. The detection limits for mercury, although dependent on the concentration of SO{sub 2} in the simulated gas matrix, remained well below the ppb range. It was determined that for the gases tested the only measurable changes in the baseline level occurred for SO{sub 2} and mercury. Speciation studies continued with mercury chloride (HgCl{sub 2}). This included checking for spectral speciation with both Hg and HgCl{sub 2} present in the CRD cavity. There was no observable spectral shift. Also a pyrolysis oven was incorporated into the gas delivery system both for tests with HgCl{sub 2} as well as atomization of the entire gas stream. The pyrolysis tests conducted have been inconclusive thus far.
A Novel Role for Extracellular Signal-Regulated Kinase in Maintaining Long-Term Memory-Relevant Excitability Changes (2007)

Pyramidal neurons in the piriform cortex from olfactory-discrimination-trained rats show enhanced intrinsic neuronal excitability that lasts for several days after learning. Such enhanced intrinsic excitability is mediated by long-term reduction in the postburst afterhyperpolarization (AHP), which is generated by repetitive spike firing. AHP reduction is attributable to decreased conductance of a calcium-dependent potassium current, the sI(AHP). We have previously shown that such learning-induced AHP reduction is maintained by PKC activation. However, the molecular machinery underlying such long-lasting modulation of intrinsic excitability is yet to be fully described. Here we examine whether the extracellular signal-regulated kinase I/II (ERKI/II) pathway, which is known to be crucial in learning, memory, and synaptic plasticity processes, is instrumental for the long-term maintenance of learning-induced AHP reduction. PD98059 or UO126, which selectively block MEK, the upstream kinase of ERK, increased the AHP in neurons from trained rats but not in neurons from naive and pseudo-trained rats. Consequently, the differences in AHP amplitude and neuronal adaptation between neurons from trained rats and controls were abolished. This effect was not mediated by modulation of basic membrane properties. In accordance with its effect on neuronal excitability, the level of activated ERK in the membranal fraction was significantly higher in piriform cortex samples taken from trained rats. In addition, the PKC activator OAG (1-oleoyl-20acety-sn-glycerol), which was shown to reduce the AHP in neurons from control rats, had no effect on these neurons in the presence of PD98059. Our data show that ERK has a key role in maintaining long-lasting learning-induced enhancement of neuronal excitability.
Overcurrent protection for the LLC resonant converter with improved hold-up time (2011)

The LLC resonant converter topology enables high DC-DC conversion efficiency and has been recently adopted for power supplies in several application areas. In this paper a method for overcurrent protection of the LLC resonant converter is proposed, which avoids a reduction of the hold-up time resulting from the application of the protection scheme. The discussion covers the operation principle, design aspects and a detailed analysis of the circuit operation. Finally measurements on a prototype are presented showing an improvement in the hold-up time of up to 83%.
Change Blindness in the Absence of a Visual Disruption (2000)

Findings from studies of visual memory and change detection have revealed a surprising inability to detect large changes to scenes from one view to the next ('change blindness'). When some form of disruption is introduced between an original and modified display, observers often fail to notice the change. This disruption can take many forms (e.g. an eye movement, a flashed blank screen, a blink, a cut in a motion picture, etc) with similar results. In all cases, the changes are sufficiently large that, were they to occur instantaneously, they would consistently be detected. Prior research on change blindness was predicated on the assumption that, in the absence of a visual disruption, the signal caused by the change would draw attention, leading to detection. In two experiments, we demonstrate that change blindness can occur even in the absence of a visual disruption. In one experiment, subjects actually detected more changes with a disruption than without one. When changes are sufficiently gradual, the visible change signal does not seem to draw attention, and large changes can go undetected. The findings are discussed in the context of metacognitive beliefs about change detection and the strategic decisions those beliefs entail.
The impact of single event gate rupture in linear devices (2000)

A number of analog devices has exhibited permanent single event failure when exposed to heavy ions of LETs 26.6 MeV cm/sup 2//mg or higher. Single event gate rupture (SEGR) was uncovered to be the failure mode in several analog circuits using failure analysis tools and circuit modeling. A new approach to assessing the risk of SEGR for a system design will be presented which strongly depends on angles near normal incident and on the critical electric field where SEGR occurs.