gebhart/patrepeval huggingface dataset:
ChemInform Abstract: N‐TERT‐BUTYLSULFONYLCARBAMATES FROM TERT‐BUTYLSULFINYL CHLORIDE AND N‐HYDROXYCARBAMATES. REACTION MECHANISM AND OBSERVATION OF CIDNP (CHEMICALLY INDUCED DYNAMIC NUCLEAR POLARIZATION) (1976)

Abstract tert.‐Butylsulfinyl= Chlorid (I) reagiert mit den N‐Hydroxy‐urethanen (II) über die Zwischenstufen (III) zu den Sulfonyl‐urethanen (IV) neben verschiedenen weiteren Verbindungen.
Ultra-short pulse laser-generated plasma flares in air and on dielectric surfaces (2010)

Summary form only given. We evaluate the use of an intense ultra-short pulse laser and a high-power millimeter wave beam or fiber laser beam to create and maintain a remote flare within the atmosphere or on the surface of a dielectric. The remote flare generation concept involves propagating an intense ultra-short pulse laser to generate the initial breakdown, followed by a longer high-energy millimeter-wave beam or laser to maintain the breakdown and deposit significant amounts of energy into the flare region. The localized plasma created by ultra-short laser pulse enhances the absorption of the longer pulse. The process involves a number of complex and inter-related nonlinear physical mechanisms that include photo-ionization, collisional ionization in air and solids, recombination, dielectric relaxation, plasma heating and hydrodynamics, the nonlinear propagation of the ultra-short pulse, and absorption in air. We analyze the physical processes discussed above and present laser, and millimeter wave requirements for initiating and sustaining the breakdown. In addition, we discuss future NRL experiments which will utilize an existing Ti-Sapphire ultra-short pulse laser, a 2 kW fiber laser, and a 15 kW 83 GHz gyrotron to demonstrate the breakdown. This concept has potential applications for electronic countermeasures, remote sensing, and guide star generation.
Berberine-induced apoptosis of human leukemia HL-60 cells is associated with down-regulation of nucleophosmin/B23 and telomerase activity (1999)

The steady-state level of nucleophosmin/B23 mRNA decreased during berberine-induced (25 microg/ml, 24 to 96 hr) apoptosis of human leukemia HL-60 cells. A decline in telomerase activity was also observed in HL-60 cells treated with berberine. A stable clone of nucleophosmin/B23 overexpressed in HL-60 cells was selected and found to be less responsive to berberine-induced apoptosis. About 35% to 63% of control vector-transfected cells (pCR3) exhibited morphological characteristics of apoptosis, while about 8% to 45% of nucleophosmin/B23-over-expressed cells (pCR3-B23) became apoptotic after incubation with 15 microg/ml berberine for 48 to 96 hr. DNA extracted from pCR3 cells contained more fragmented DNA than pCR3-B23 cells during treatment with 15 microg/ml berberine for 24 to 48 hr. Our results indicate that berberine-induced apoptosis is associated with down-regulation of nucleophosmin/B23 and telomerase activity. We also suggest that nucleophosmin/B23 may play an important role in the control of the cellular response to apoptosis induction.
Phonon related properties of transition metals, their carbides, and nitrides: A first-principles study (2007)

Lattice dynamics of body-centered cubic (bcc) Vb-VIb group transition metals (TM), and B1-type monocarbides and mononitrides of IIIb-VIb transition metals are studied by means of first-principles density functional perturbation theory, ultra soft pseudopotentials, and generalized gradient approximation to the exchange-correlation functional. Ground state parameters of transition metals and their compounds are correctly reproduced with the generated ultrasoft pseudopotentials. The calculated phonon spectra of the bcc metals are in excellent agreement with results of inelastic neutron scattering experiments. We show that the superconductivity of transition metal carbides (TMC) and transition metal nitrides (TMN) is related to peculiarities of the phonon spectra, and the anomalies of the spectra are connected to the number of valence electrons in crystals. The calculated electron-phonon interaction constants for TM, TMC, and TMN are in excellent agreement with experimentally determined values. Phonon spectra for a number of monocarbides and mononitrides of transition metals within the cubic NaCl- and hexagonal WC-type structures are predicted. Ideal stoichiometric B1 crystals of ScC, YC, and VC are predicted to be dynamically stable and superconducting materials. We also conclude that YN is a semiconductor.
Ripple Carry Adder for Micropipeline Circuits (2005)

International audience
Enzymes: Specific Tools Coming of Age (1975)

Cellulose chemistry has long represented a difficult battleground for researchers who have successfully applied science to other fields. The seeming simplicity and the true complexity of the cellulose "package"---the fiber structure---have served to entrap those who would unravel its mysteries and use if efficiently. Combining the mysteries of cellulose and enzymes has produced an area containing little fact and much fiction. The studies of this paper provide methods to predict enzymatic hydrolysis of cellulose and indicate a practical method for rapid conversion of cellulosic substrates into glucose.
Neural network identification and control in the presence of noise (2002)

This paper examines the performance of a control system design in the presence of noise. An architecture from the seminal work of Narendra and Parthasarathy (1990) is modified to institute recurrence in the neural net and the recurrent system performance is compared to the feedforward system response. The process of comparing the feedforward to the recurrent system is repeated for ten networks each having unique weights. The weights of each network are processed to obtain certain previously derived performance measures. The results of the experiments show that bias and variance performance of neural network control and identification systems can be improved by using the performance measures in the design process.
Development of a Methodology for Service Lifetime Prediction of Renewable Energy Devices (1996)

Emerging advanced multilayer renewable energy devices, such as reflector materials and photovoltaic modules, are expected to exhibit significantly increased service lifetimes compared to existing devices. Such devices must be capable of 20 to 30 years of operation under harsh outdoor weathering conditions. Industrial manufacturers cannot afford to wait extended periods of time to determine whether such lifetimes are realistic. Consequently, a flexible, robust, and accurate method for predicting the service lifetime of such devices is essential. Two requirements for developing such a method are first, to correlate the accelerated lifetime test methods with anticipated life under real-world operating environments; and second, to establish statistical models for predicting service lifetimes based on environmental stress factors. The relative significance of the weathering stress factors ultraviolet light (UV), temperature (T), and relative humidity (RH) was ascertained. Optical properties of new reflector materials were measured and their loss of performance with exposure time was modelled as a function of an appropriate combination of stress factors. Then, the functional relationship between performance measurements and time in accelerated lifetime tests was investigated. The basic framework of this approach is SPt analysis because it intends to explain the bridge functions from Stresses (S) to Performance (P) and from Performance to lifetime (t) of the materials. The results show that the cumulative dosage of ultraviolet radiation between 290–320 nm (UV-B) with synergistic effects of T and RH is a very critical factor in inducing performance loss. Finally, the SPt model developed for accelerated laboratory data was verified for data obtained from outdoor sites, and excellent agreement was found.
Automatic Instrument Recognition In A Polyphonic Mixture Using Sparse Representations. (2007)

[TODO] Add abstract here.
Branching fraction and charge asymmetry measurements in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>B</mml:mi><mml:mo>→</mml:mo><mml:mi>J</mml:mi><mml:mo>/</mml:mo><mml:mi>ψ</mml:mi><mml:mi>π</mml:mi><mml:mi>π</mml:mi></mml:math>decays (2007)

We study the decays ${B}^{0}\ensuremath{\rightarrow}J/\ensuremath{\psi}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ and ${B}^{+}\ensuremath{\rightarrow}J/\ensuremath{\psi}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{0}$, including intermediate resonances, using a sample of $382\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B\overline{B}$ pairs recorded by the BABAR detector at the PEP-II ${e}^{+}{e}^{\ensuremath{-}}$ $B$ factory. We measure the branching fractions $\mathcal{B}({B}^{0}\ensuremath{\rightarrow}J/\ensuremath{\psi}{\ensuremath{\rho}}^{0})=(2.7\ifmmode\pm\else\textpm\fi{}0.3\ifmmode\pm\else\textpm\fi{}0.2)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$ and $\mathcal{B}({B}^{+}\ensuremath{\rightarrow}J/\ensuremath{\psi}{\ensuremath{\rho}}^{+})=(5.0\ifmmode\pm\else\textpm\fi{}0.7\ifmmode\pm\else\textpm\fi{}0.3)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$. We also set the following upper limits at the 90% confidence level: $\mathcal{B}({B}^{0}\ensuremath{\rightarrow}J/\ensuremath{\psi}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}\text{ }\mathrm{\text{nonresonant}})<1.2\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$, $\mathcal{B}({B}^{0}\ensuremath{\rightarrow}J/\ensuremath{\psi}{f}_{2})<4.6\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$, and $\mathcal{B}({B}^{+}\ensuremath{\rightarrow}J/\ensuremath{\psi}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{0}\text{ }\mathrm{\text{nonresonant}})<7.3\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$. We measure the charge asymmetry in charged $B$ decays to $J/\ensuremath{\psi}\ensuremath{\rho}$ to be $\ensuremath{-}0.11\ifmmode\pm\else\textpm\fi{}0.12\ifmmode\pm\else\textpm\fi{}0.08$.
Inkjet-Printed Transparent Antennas Integrated on Solar Cells (2010)

Many variables should be considered in the approach to patients with pneumatosis intestinalis. The challenge facing the surgeons is in truly identifying those who really would benefit and need surgical intervention. The watch and wait policy as a first step seems reasonable, reserving surgery only for patients who are unstable or with high suspicion of bowel ischemia, necrosis, or perforation.
Quasi-simultaneous laser welding of polymers - the process and applications for mass-production (2005)

Welding time is often the most critical parameter when welding plastics in mass-production. The required welding time can be reached with several different parameter combinations with the quasi-simultaneous laser welding technique. The parameters that effect the most to the welding time are welding speed and the number of passes around the welding path. Both of these parameters effect to the laser power needed to achieve adequate weld strength and joint quality. The effect of welding speed, number of passes and laser power varied in order to determine the effect on weld strength, weld quality and visual appearance. Air gap bridging capability of quasi-simultaneous laser welding was also compared to contour laser welding.
Navier-Stokes simulation of transonic afterbody flows with jet exhaust (1990)

Three-dimensional Navier-Stokes simulations have been made for the transonic flow past a nonaxisymmetric nozzle typical of those advocated for advanced fighter airplanes. Jet exhaust simulation is evaluated as are the Baldwin-Lomax (1978) and Goldberg (1986) turbulence models. Solutions are presented for Mach numbers of 0.80 and 0.94 at 0-deg angle of attack and a Reynolds number of 20 x 10 to the 6th. The numerical results are compared to wind-tunnel data. They show that including the jet exhaust in the calculations gives the most accurate solution near the nozzle exit. Also, the two turbulence models predict considerably different flow fields.
Studies in the regulation of intestinal iron absorption. (1963)

Experiments were carried out to elucidate the regulatory mechanisms operative in the transport of iron from the lumen of the intestine into the blood. By the development of a surgical procedure, we were able to continuously monitor and record the rate at which Fe/sup 59/ introduced into a washed segment of the gut appeared in the circulation of an intact rabbit. Chelation of the metal plays a fundamental role in its availability for transport across the intestinal membranes. Both Fe/sup 2+/ and Fe/sup 3+/ are rapidly absorbed when presented to the mucosal wall suitably chelated with fructose. No demonstrable time lag for the entry of activity, other than that required for the labeled blood to move from the circulatory system of the bowel into the detector, has been observed. The entry of iron into the blood from the lumen appears to be a function of the level of unbound ironbinding capacity of the plasma. The injection of unsaturated transferrin into an animal whose uptake of iron has reached a plateau caused the immediate resumption of the transport of activity. Neither saturated transferrin from anemic plasma nor dense suspensions of red blood cells was effective in increasing iron uptake. A hypothesismore » for the regulation of iron uptake based upon control by chelation and equilibrium binding is proposed and discussed in the light of our own as well as other investigators' results. (auth)« less
Maximum likelihood DSSS code acquisition in the presence of multipath propagation, Doppler shift and data modulation (2002)

During the initial synchronisation in a direct sequence spread spectrum system the time and frequency uncertainty contained in the received signal have to be estimated. In this paper, maximum likelihood (ML) acquisition is investigated in the presence of multipath propagation, Doppler shift, data modulation and noise. The resulting ML acquisition detector is given. It is shown, how the ML acquisition detector is related to the matched filter (MF) principle, which is better suited for implementations. The performance of both approaches is compared and it is shown, that the ML acquisition detector outperforms the MF acquisition detector in the investigated cases. Finally, the mean acquisition time of the ML acquisition detector is derived and compared to the well known threshold detector.
Growth of single-crystal fibers for non-linear optical applications using the micro-pulling down technique (µ-PD) (2011)

The versatility of the micro-pulling down technique has been investigated through the growth of single crystal fibers of three kinds of materials presenting different behaviours on melting. The materials studied were either congruently melting (LiNbO3), or incongruently melting through a peritectic reaction (Ca5(BO3)3F) or a solid solution (K3Li2-xNb5+xO15+2x). In each case, regular and transparent fibers free of macroscopic defects (bubbles, inclusions, cracks) could be obtained.
Exploiting coarse-grained task, data, and pipeline parallelism in stream programs (2006)

As multicore architectures enter the mainstream, there is a pressing demand for high-level programming models that can effectively map to them. Stream programming offers an attractive way to expose coarse-grained parallelism, as streaming applications (image, video, DSP, etc.) are naturally represented by independent filters that communicate over explicit data channels.In this paper, we demonstrate an end-to-end stream compiler that attains robust multicore performance in the face of varying application characteristics. As benchmarks exhibit different amounts of task, data, and pipeline parallelism, we exploit all types of parallelism in a unified manner in order to achieve this generality. Our compiler, which maps from the StreamIt language to the 16-core Raw architecture, attains a 11.2x mean speedup over a single-core baseline, and a 1.84x speedup over our previous work.
A5_4 Hanging with Aang: Flying like the Last Airbender (2020)

In this paper we devise a model describing flight as depicted using gliders in Avatar: The Last Airbender. This allowed us to find the windspeeds needed to sustain level flight over a range of possible human masses. We found that for the show’s protagonist, Aang, a windspeed of 15.11 ms−1 , was needed, and an average human would require windspeeds of 18.90 ms−1 .
Correction: Corrigendum: Diffraction data of core-shell nanoparticles from an X-ray free electron laser (2017)

This corrects the article DOI: 10.1038/sdata.2017.48.
Molecular recognition in cytochrome P-450: alteration of regioselective alkane hydroxylation via protein engineering (1989)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular recognition in cytochrome P-450: alteration of regioselective alkane hydroxylation via protein engineeringWilliam M. Atkins and Stephen G. SligarCite this: J. Am. Chem. Soc. 1989, 111, 7, 2715–2717Publication Date (Print):March 1, 1989Publication History Published online1 May 2002Published inissue 1 March 1989https://pubs.acs.org/doi/10.1021/ja00189a057https://doi.org/10.1021/ja00189a057research-articleACS PublicationsRequest reuse permissionsArticle Views301Altmetric-Citations90LEARN 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
Dynamic Estimation and Prediction of Freeway O-D Matrices with Route Switching Considerations and Time-Dependent Model Parameters (1996)

An enhanced Kalman Filtering algorithm for the dynamic estimation and prediction of freeway origin-and-destination (O-D) matrices is presented. The effects of traffic congestion and traffic diversion information on the O-D distribution pattern are explicitly captured through a behavioral model of route switching. Moreover, in view of the time-varying nature of traffic variables, the proposed algorithm updates the model parameters by using on-line traffic measurements. Preliminary simulation results demonstrate the importance of using time-dependent model parameters and accounting for the effect of traffic information in the estimation and prediction of dynamic freeway O-D demands.
Optimizing the initial 12-lead electrocardiographic diagnosis of acute myocardial infarction (2000)

Different definitions of 'significant' ST elevation led to marked variations in sensitivity and specificity for diagnosis of acute myocardial infarction. Multiple QRST features in addition to ST elevation only marginally improved overall classification.
An EUV Spectrometer For Atmospheric Remote Sensing (1989)

We describe a sounding rocket experiment to investigate mechanisms governing the interactions between two of the fundamental components of the solar-terrestrial system: the solar ionizing radiation and the Earth's upper atmosphere. The experiment was designed to characterize the Extreme Ultraviolet (EUV) emissions resulting from these interactions in terms of physical parameters so that EUV remote sensing can be gainfully employed as a quantitative diagnostic of the terrestrial atmosphere and plasma environment. Although several EUV observations of the Earth's airglow have been made, these measurements have never been complemented with simultaneous measurements of the solar EUV flux, thereby making the interpretations somewhat ambiguous. The payload consisted of (1) a high resolution (-1.5 Å) spectrometer to measure the EUV emissions (980-1360 A) of the Earth's dayglow, (2) a moderate resolution (-10 Å) EUV spectrometer (250-1450 Å), to measure the solar irradiation responsible for the photoelectron production, and (3) a hydrogen Lyman Alpha photometer to monitor the solar irradiance and geocoronal emissions. The experiment was con-ducted from a four-stage Black Brant XII sounding rocket launched from NASA Wallops Flight Facility in Wallops Island, Virginia, on September 30, 1988.
Ventral Pallidal Representation of Pavlovian Cues and Reward: Population and Rate Codes (2004)

We recorded neural activity in the ventral pallidum (VP) while rats learned a pavlovian reward association. Rats learned to distinguish a tone that predicted sucrose pellets (CS+) from a different tone that predicted nothing (CS-). Many VP units became responsive to CS+, but few units responded to CS-. When two CS+ were encountered sequentially, the earliest predictor of reward became most potent. Many VP units were also activated when the sucrose reward was received [unconditioned stimulus (UCS)]. These VP units for UCS remained responsive to sucrose reward after learning, even when sucrose was already predicted by CS+. Neural representation of reward learning and reward itself was characterized by population codes. The population of units that responded to CS+ increased with learning, whereas the population that responded to UCS did not change. A relative firing rate code also represented the identities of conditioned stimuli and UCS. Firing rate differences among stimuli were acquired early and remained stable during subsequent training, whereas population codes and behavioral conditioned responses continued to develop during subsequent training. Thus, the VP makes use of dynamic CS population and rate codes to encode pavlovian reward cues in reward learning and uses stable UCS population and firing codes to encode sucrose reward itself.
Comment développer les compétences en matière de diversité culturelle? (2009)

Résumé Le développement des compétences en matière de diversité culturelle s’avère un important défi auquel fait face l’entreprise. Dans la première partie de l’article, nous nous demandons pourquoi il faut développer des compétences culturelles. Dans la deuxième partie, nous faisons un tour d’horizon des compétences que les organisations doivent acquérir pour mieux comprendre et intégrer la diversité. Puis, dans la troisième partie, nous nous tournons vers les compétences qui sont nécessaires aux membres de l’organisation pour relever le défi de la diversité. Enfin, dans la quatrième partie, nous voyons comment le déploiement des compétences individuelles en matière de diversité peut être favorisé. Des exemples d’organisations engagées dans ce domaine sont donnés et des compétences clés sont indiquées.
ChemInform Abstract: Discovery and Synthesis of Methyl 2,5‐Dimethyl‐4‐(2‐(phenylmethyl) benzoyl)‐1H‐pyrrole‐3‐carboxylate (FPL 64176) and Analogues: The First Examples of a New Class of Calcium Channel Activator. (1994)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Cardiac sympathetic nervous activity in congestive heart failure. Evidence for increased neuronal norepinephrine release and preserved neuronal uptake. (1993)

The marked increase in norepinephrine spillover from the heart in CHF attributable to coronary artery disease results primarily from an increase in sympathetic nerve firing and neuronal release of norepinephrine, not from faulty neuronal reuptake of norepinephrine.