gebhart/patrepeval huggingface dataset:
Photochemistry and photophysics of bis(terpyridyl) complexes of ruthenium(II) in fluid solution. Evidence for the formation of an .eta.2-diphenylterpyridine complex (1985)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotochemistry and photophysics of bis(terpyridyl) complexes of ruthenium(II) in fluid solution. Evidence for the formation of an .eta.2-diphenylterpyridine complexJon R. Kirchhoff, David R. McMillin, Pascal A. Marnot, and Jean Pierre SauvageCite this: J. Am. Chem. Soc. 1985, 107, 5, 1138–1141Publication Date (Print):March 1, 1985Publication History Published online1 May 2002Published inissue 1 March 1985https://pubs.acs.org/doi/10.1021/ja00291a009https://doi.org/10.1021/ja00291a009research-articleACS PublicationsRequest reuse permissionsArticle Views508Altmetric-Citations78LEARN 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
<title>Refined normal approximations for a simple multiclass closed queueing network and its applications to admission control</title> (1999)

A particular closed queuing network consisting of two processor sharing servers and two types of customers with fixed routes, which are generated by two finite sources, is studied. A complete bottleneck classification is provided as the number of customers and service rates at processor sharing servers increase. Asymptotic approximations for the marginal distributions at the two processor-sharing nodes are derived, when both nodes are bottlenecks. These approximations imply the normal approximation whose mean and variance are explicitly expressed through network parameters. The results are applied to the problem of admission control in packet-switching communication networks.
Pulsated O2/Fuel Flame as a New Technique for Low NOxEmission (1993)

ABSTRACT A new primary NOx reduction method is described. It consists in pulsating one or both fluids from a oxy-gas burner by rotary-plug valve or solenoid electrovalve. The parameters to be set are C the constant fraction of the pulsated gas flow-rate, P the amplitude of the pulsated fraction of the gas flow-rate, O the duration of the maximum flow-rate, F the duration of the minimum flow-rate and the dephasing between the two pulsations when both gases are pulsated. Experiments on 20 kW and 50 kW pilot furnaces have shown that up to 90% NOx reduction can be achieved without lowering heat transfer when parameters are set as follows (both gases are pulsated): dephasing equal to 1/2, C/P around 0.2 and frequency (1/F+O)) as low as possible. Further developments are underway to perform test on a 1 MW pilot furnace before industrial trials
A Convenient and Stereoselective Synthesis of (3Z,5Z)-5-Fluorotetrade Cadien-1-yl Acetate, A Fluorinated Analog of the sex Pheromone of the CarpenterwormPrionoxistus robiniae(Peck) (1985)

A convenient synthesis of (3Z,5Z)-5-fluorote-tradecadien-1-yl acetate 1, a fluorinated analog of the sex pheromone of the carpenterworm Prionoxistsus robiniae (Peck), through reaction of (Z)-2-fluoro-2-undecenal 4 with the previously unreported Wittig reagent 5,5-dimethyl-4,6-dloxaoctyltripenylphosphonium chloride 6, is presented.
Performance of IP optical packet networks with deflection routing (2005)

This paper deals with optical packet switching in a full-IP transport network scenario. Given the technological limits of accomplishing packet buffering in the optical domain, deflection routing is here explored as an alternative technique for resolving packet contentions without buffering packets. Two different network topologies have been considered here, that is a regular six-node network with different connectivity factors and the classical NSF network. The performance improvements that can be obtained by deflection routing have been evaluated considering different methods for choosing the alternative paths where to deflect packets that cannot be transmitted onto the shortest: path to the addressed destination.
Bayesian time series analysis (2010)

The importance of Bayesian methods in econometrics has increased rapidly since the early 1990s. This has, no doubt, been fuelled by an increasing appreciation of the advantages that Bayesian inference entails. In particular, it provides us with a formal way to incorporate the prior information we often possess before seeing the data, it fits perfectly with sequential learning and decision making, and it directly leads to exact small sample results. In addition, the Bayesian paradigm is particularly natural for prediction, since we take into account all parameter or even model uncertainty. The predictive distribution is the sampling distribution where the parameters are integrated out with the posterior distribution and provides exactly what we need for forecasting, often a key goal of time-series analysis.
Impact of Time-of-Flight PET on Quantification Errors in MR Imaging–Based Attenuation Correction (2015)

TOF PET substantially reduces artifacts and improves significantly the quantitative accuracy of standard MRAC methods. Therefore, MRAC should be less of a concern on future TOF PET/MR scanners with improved timing resolution.
AUTOMOTIVE: A Case Study on AUTOmatic multiMOdal Drowsiness detecTIon for smart VEhicles (2021)

As technology and artificial intelligence conquer a place under the spotlight in the automotive world, driver drowsiness monitoring systems have sparked much interest as a way to increase safety and avoid sleepiness-related accidents. Such technologies, however, stumble upon the observation that each driver presents a distinct set of behavioral and physiological manifestations of drowsiness, thus rendering its objective assessment a non-trivial process. The AUTOMOTIVE project studied the application of signal processing and machine learning techniques for driver-specific drowsiness detection in smart vehicles, enabled by immersive driving simulators. More broadly, comprehensive research on biometrics using the electrocardiogram (ECG) and face enables the continuous learning of subject-specific models of drowsiness for more efficient monitoring. This paper aims to offer a holistic but comprehensive view of the research and development work conducted for the AUTOMOTIVE project across the various addressed topics and how it ultimately brings us closer to the target of improved driver drowsiness monitoring.
Real-time digital filtering, event triggering, and tomographic reconstruction of JET soft x-ray data (abstract) (1990)

Based upon the experience gained with the present soft x-ray data acquisition system, new techniques are being developed which make extensive use of digital signal processors (DSPs). Digital filters make 13 further frequencies available in real time from the input sampling frequency of 200 kHz. In parallel, various algorithms running on further DSPs generate triggers in response to a range of events in the plasma. The sawtooth crash can be detected, for example, with a delay of only 50 μs from the onset of the collapse. The trigger processor interacts with the digital filter boards to ensure data of the appropriate frequency is recorded throughout a plasma discharge. An independent link is used to pass 780 and 24 Hz filtered data to a network of transputers. A full tomographic inversion and display of the 24 Hz data is carried out in real time using this 15 transputer array. The 780 Hz data are stored for immediate detailed playback following the pulse. Such a system could considerably improve the quality of present plasma diagnostic data which is, in general, sampled at one fixed frequency throughout a discharge. Further, it should provide valuable information towards designing diagnostic data acquisition systems for future long pulse operation machines when a high degree of real-time processing will be required, while retaining the ability to detect, record, and analyze events of interest within such long plasma discharges.
The Effect of Additive Chemical Structure on the Tribofilms Derived from Varying Molybdenum-Sulfur Chemistries (2021)

Abstract Molybdenum disulfide (MoS 2 ) is an effective friction modifier that can be formed on surfaces from oil-soluble lubricant additives. Different additive chemistries can be used to form MoS 2 on a surface. The tribofilms formed from three different molybdenum additives (MoDTC Dimer, MoDTC Trimer, and molybdate ester) were studied in additive monoblends and fully formulated systems. The resulting tribofilms were then characterized by Raman spectroscopic spatial mapping, XPS, and FIB-TEM. The distribution of MoS 2 on the surface was much more sparse for the molybdate ester than the other additives. No crystalline molybdenum oxides were observed by Raman spectroscopy, but their presence was inferred from XPS analysis. XPS analysis showed very similar distributions of Mo oxidation states from each additive, such that the chemical nature of the films formed from all of the additives is likely similar. Each of the additive tribofilms was observed to have MoS 3 vibrations in Raman and persulfide XPS peaks associated with amorphous MoS 3 , as such this species is presented as a common frictional decomposition product for all the additives. The MoDTC trimer is more able to produce this amorphous species on the contacting surfaces due to its structural similarities to the co-ordination polymer MoS 3 . Graphical Abstract
One or Two Samples for Determination of Total Plasma Clearance of a Nonionic Contrast Medium in Patients Undergoing Enhanced CT (1992)

Plasma clearance of nonionic iopamidol (300 mg I/ml) was measured in 50 patients in connection with enhanced CT. Before injection of either 50 or 100 ml of the contrast medium, S-creatinine and urine osmolality were measured. Employing Renalyzer PRX 90, the plasma concentration of iodine was determined in blood samples drawn approximately 3 and 4 h after injection of iopamidol. The glomerular filtration rate was calculated by the Renalyzer using 2 different formulas, one requiring only a single sample, and one requiring at least 2 samples (standard). Both the 3- and 4-h single sample values correlated well with the glomerular filtration rate expressed by the standard sample value. The result was independent of whether 50 or 100 ml had been administered and whether or not water soluble contrast medium had been given orally before CT. As could be expected S-creatinine and urine osmolality correlated poorly with the clearance values. It is concluded that in patients receiving either 50 or 100 ml contrast medium for enhanced CT, the glomerular filtration rate can be determined in a single sample as well as with 2 samples taken between 3 and 4 h after contrast medium injection.
Synthesis of Silicon Carbide Nanotubes by Chemical Vapor Deposition (2006)

Silicon carbide nanotubes (SiCNTs) were directly synthesized by chemical vapor deposition (CVD) in the paper. Methyltrichlorosilane (MTS) was selected as the SiC gaseous source and, ferrocence and thiophene as the catalyst and the cocatalyst, respectively. The influences of reaction temperature, contents of catalyst and cocatalyst, and content of gaseous source on the morphologies of the products were investigated, respectively. The products were identified by high-resolution transmission electron microscopy (HRTEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), and energy-dispersive X-ray (EDX), respectively. The synthesis of SiCNTs by CVD suggested a condition-dependent process. Novel SiCNTs, with 20 approximately 80 nm in outer diameter and 15 approximately 35 nm in inner diameter, respectively, were observed. The wall structure similar to that of carbon nanotubes was not found for the SiCNTs.
MPEG‐4 Visual (2003)

This chapter contains sections titled: Introduction Overview of MPEG-4 Visual (Natural Video Coding) Coding Rectangular Frames Coding Arbitrary-shaped Regions Scalable Video Coding Texture Coding Coding Studio-quality Video Coding Synthetic Visual Scenes Conclusions References
Toward a novel experimental model of infection to study American cutaneous leishmania braziliensis (2005)

Fundacação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasil
Influence of Morphology on Film Formation of Acrylic Dispersions (1996)

Latex drying behaviour and (film) properties as minimum film forming temperature (MFT), dynamic mechanical behaviour, hardness and tensile strength have been compared, for latices prepared according to two stage emulsion polymerisation and by blending low and high Tg single stage latices. Compared to single stage counterparts, having the same overall composition, two stage systems as well as blends remain a significant lower MFT up to high levels of high Tg polymer. All differences, including the ones in dynamic mechanical behaviour, can be ascribed to differences in latex morphology. For all latices, initial dry rates are observed which deviate from established film formation models and from experiments described in literature. It is shown that latex composition and latex morphology have a small, irrefutable influence on the initial water evaporation rate.
Effect of Experimental Dengue Virus Infection on Humoral and Cell-Mediated Immune Response to Thymus-Dependent Antigen (1980)

Mice injected with dengue virus showed a depressed primary and secondary humoral immune response to SRBC as measured by the number of antibody-forming cells, haemagglutinin and haemolysin titres. The time of administration of SRBC during the infection was found to be an important factor determining the response to SRBC. The cell-mediated immune response was also suppressed as measured by the delayed hypersensitivity reaction to SRBC in the footpad. While the immunosuppression of humoral immunity was only transient and the animals recovered within 30 days following infection, the cell-mediated immunity remained suppressed throughout this period. Immunofluorescent studies and LD50 determination of the infected brains demonstrated significant virus titres from 7 to 15 days postinfection. This period coincided with maximal immunosuppression.
Activation of cGMP-dependent Protein Kinase Iβ Inhibits Interleukin 2 Release and Proliferation of T Cell Receptor-stimulated Human Peripheral T Cells (2001)

Several major functions of type I cGMP-dependent protein kinase (cGK I) have been established in smooth muscle cells, platelets, endothelial cells, and cardiac myocytes. Here we demonstrate that cGK Ibeta is endogenously expressed in freshly purified human peripheral blood T lymphocytes and inhibits their proliferation and interleukin 2 release. Incubation of human T cells with the NO donor, sodium nitroprusside, or the membrane-permeant cGMP analogs PET-cGMP and 8-pCPT-cGMP, activated cGK I and produced (i) a distinct pattern of phosphorylation of vasodilator-stimulated phosphoprotein, (ii) stimulation of the mitogen-activated protein kinases ERK1/2 and p38 kinase, and, upon anti-CD3 stimulation, (iii) inhibition of interleukin 2 release and (iv) inhibition of cell proliferation. cGK I was lost during in vitro culturing of primary T cells and was not detectable in transformed T cell lines. The proliferation of these cGK I-deficient cells was not inhibited by even high cGMP concentrations indicating that cGK I, but not cGMP-regulated phosphodiesterases or channels, cAMP-dependent protein kinase, or other potential cGMP mediators, was responsible for inhibition of T cell proliferation. Consistent with this, overexpression of cGK Ibeta, but not an inactive cGK Ibeta mutant, restored cGMP-dependent inhibition of cell proliferation of Jurkat cells. Thus, the NO/cGMP/cGK signaling system is a negative regulator of T cell activation and proliferation and of potential significance for counteracting inflammatory or lymphoproliferative processes.
Theoretical and experimental total state-selected and state-to-state cross sections. III. The (Ar+H2)+ system (1990)

A detailed three-dimensional quantum mechanical study of the (Ar+H2)+ system along the energy range 0.4 eV≤Etot≤1.65 eV is presented. The main difference between this new treatment and the previously published one [J. Chem. Phys. 87, 465 (1987)] is the employment of a new version of the reactive infinite-order sudden approximation (IOSA), which is based on the ordinary inelastic IOSA carried out for an optical potential. In the numerical treatment we include three surfaces (only two were included in the previous treatment), one which correlates with the Ar+H+2 system and two which correlate with the two spin states of Ar+(2Pj); j=3/2,1/2. The results are compared with both trajectory-surface-hopping calculations and with experiments. In most cases, very good agreement is obtained.
Data Collection and End-to-End Learning for Conversational AI. (2019)

A fundamental long-term goal of conversational AI is to merge two main dialogue system paradigms into a standalone multi-purpose system. Such a system should be capable of conversing about arbitrary topics (Paradigm 1: open-domain dialogue systems), and simultaneously assist humans with completing a wide range of tasks with well-defined semantics such as restaurant search and booking, customer service applications, or ticket bookings (Paradigm 2: task-based dialogue systems).The recent developmental leaps in conversational AI technology are undoubtedly linked to more and more sophisticated deep learning algorithms that capture patterns in increasing amounts of data generated by various data collection mechanisms. The goal of this tutorial is therefore twofold. First, it aims at familiarising the research community with the recent advances in algorithmic design of statistical dialogue systems for both open-domain and task-based dialogue paradigms. The focus of the tutorial is on recently introduced end-to-end learning for dialogue systems and their relation to more common modular systems. In theory, learning end-to-end from data offers seamless and unprecedented portability of dialogue systems to a wide spectrum of tasks and languages. From a practical point of view, there are still plenty of research challenges and opportunities remaining: in this tutorial we analyse this gap between theory and practice, and introduce the research community with the main advantages as well as with key practical limitations of current end-to-end dialogue learning.The critical requirement of each statistical dialogue system is the data at hand. The system cannot provide assistance for the task without having appropriate task-related data to learn from. Therefore, the second major goal of this tutorial is to provide a comprehensive overview of the current approaches to data collection for dialogue, and analyse the current gaps and challenges with diverse data collection protocols, as well as their relation to and current limitations of data-driven end-to-end dialogue modeling. We will again analyse this relation and limitations both from research and industry perspective, and provide key insights on the application of state-of-the-art methodology into industry-scale conversational AI systems.
A novel method using baculovirus-mediated gene transfer for production of recombinant adeno-associated virus vectors (2001)

The baculovirus Autographa californica multiple nucleopolyhedrosis virus causes non-productive infection in mammalian cells. Recombinant baculovirus therefore has the capability to transfer and express heterologous genes in these cells if a mammalian promoter governs the gene of interest. We have investigated the possibility of using baculovirus as a tool to produce recombinant adeno-associated virus (rAAV). AAV has become increasingly popular as a vector for gene therapy and functional genomics efforts, although its use is hampered by the lack of a simple and efficient vector production method. We show here that co-infection of mammalian producer cells with three viruses - a baculovirus containing the reporter gene flanked by AAV ITRs, a baculovirus expressing the AAV rep gene and a helper adenovirus expressing the AAV cap gene - produces infectious rAAV particles. This baculovirus-based chimeric vector method may in future improve large-scale rAAV vector preparations and circumvent present-day problems associated with rAAV production.
Seed-shattering phenology at soybean harvest of economically important weeds in multiple regions of the United States. Part 3: Drivers of seed shatter (2021)

Abstract Seed retention, and ultimately seed shatter, are extremely important for the efficacy of harvest weed seed control (HWSC) and are likely influenced by various agroecological and environmental factors. Field studies investigated seed-shattering phenology of 22 weed species across three soybean [ Glycine max (L.) Merr.]-producing regions in the United States. We further evaluated the potential drivers of seed shatter in terms of weather conditions, growing degree days, and plant biomass. Based on the results, weather conditions had no consistent impact on weed seed shatter. However, there was a positive correlation between individual weed plant biomass and delayed weed seed–shattering rates during harvest. This work demonstrates that HWSC can potentially reduce weed seedbank inputs of plants that have escaped early-season management practices and retained seed through harvest. However, smaller individuals of plants within the same population that shatter seed before harvest pose a risk of escaping early-season management and HWSC.
Climatology of tropospheric vertical velocity spectra (1986)

Vertical velocity power spectra obtained from Poker Flat, Alaska; Platteville, Colorado; Rhone Delta, France; and Ponape, East Caroline Islands using 50-MHz clear-air radars with vertical beams are given. The spectra were obtained by analyzing the quietest periods from the one-minute-resolution time series for each site. The lengths of available vertical records ranged from as long as 6 months at Poker Flat to about 1 month at Platteville. The quiet-time vertical velocity spectra are shown. Spectral period ranging from 2 minutes to 4 hours is shown on the abscissa and power spectral density is given on the ordinate. The Brunt-Vaisala (B-V) periods (determined from nearby sounding balloons) are indicated. All spectra (except the one from Platteville) exhibit a peak at periods slightly longer than the B-V period, are flat at longer periods, and fall rapidly at periods less than the B-V period. This behavior is expected for a spectrum of internal waves and is very similar to what is observed in the ocean (Eriksen, 1978). The spectral amplitudes vary by only a factor of 2 or 3 about the mean, and show that under quiet conditions vertical velocity spectra from the troposphere are very similar at widely different locations.