gebhart/patrepeval huggingface dataset:
Influence de traitements de surface sur le comportement du Nickel en EDMA (2003)

Dans le but d'ameliorer la tenue a la corrosion du nickel immerge dans l'eau de mer artificielle differents traitements et revetements de surface en allant des plus simples (martelage, impactage) aux plus sophistiques (implantation ionique, irradiation aux electrons, depots assistes par faisceau d'ions) ont ete utilises. La resistance a la corrosion a ete determinee par differentes methodes dont les avantages et les inconvenients sont analyses. La spectrometrie d'impedance permet en particulier une etude fine en precisant les gammes de frequences caracteristiques des processus specifiques de la degradation. Un circuit equivalent est propose pour rendre compte des resultats experimentaux. En fonction du temps d'immersion deux stades distincts sont mis en evidence: l'un rapide et protecteur en debut d'immersion attribue a la passivation du materiau, l'autre, plus lent, caracteristique de la deterioration progressive du film passif sous l'action des ions Cl-.
The Two-User Causal Cognitive Interference Channel: Novel Outer Bounds and Constant Gap Result for the Symmetric Gaussian Noise Channel in Weak Interference (2016)

This paper studies the two-user causal cognitive interference channel (CCIC), where two transmitters aim to communicate independent messages to two different receivers via a common channel. One source, referred to as the cognitive, is capable of overhearing the other source, referred to as the primary, through a noisy in-band link and thus can assist in sending the primary's data. The authors of this paper recently characterized to within a constant gap the capacity of the symmetric Gaussian CCIC in: 1) the strong interference regime and 2) for a subset of the weak interference regime when the cooperation link is larger than a given threshold. This paper characterizes to within a constant gap the capacity for the symmetric Gaussian CCIC in the regime that was still open. To this end, two novel outer bounds of the types 2Rp + R <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">c</sub> and Rp + 2R <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">c</sub> are derived for the class of injective semideterministic CCICs, where the noises at the different source-destination pairs are independent. These outer bounds, as well as an achievable rate region based on Gelfand-Pinsker binning, superposition coding, and simultaneous decoding at the receivers, are then specialized to the Gaussian noise case. It is shown that the novel outer bounds are necessary to characterize the capacity within a constant gap when the cooperation link is weaker than the direct links, that is, in this regime unilateral cooperation leaves some system resources underutilized.
Automated Ortho-Rectification of UAV-Based Hyperspectral Data over an Agricultural Field Using Frame RGB Imagery (2016)

Low-cost Unmanned Airborne Vehicles (UAVs) equipped with consumer-grade imaging systems have emerged as a potential remote sensing platform that could satisfy the needs of a wide range of civilian applications. Among these applications, UAV-based agricultural mapping and monitoring have attracted significant attention from both the research and professional communities. The interest in UAV-based remote sensing for agricultural management is motivated by the need to maximize crop yield. Remote sensing-based crop yield prediction and estimation are primarily based on imaging systems with different spectral coverage and resolution (e.g., RGB and hyperspectral imaging systems). Due to the data volume, RGB imaging is based on frame cameras, while hyperspectral sensors are primarily push-broom scanners. To cope with the limited endurance and payload constraints of low-cost UAVs, the agricultural research and professional communities have to rely on consumer-grade and light-weight sensors. However, the geometric fidelity of derived information from push-broom hyperspectral scanners is quite sensitive to the available position and orientation established through a direct geo-referencing unit onboard the imaging platform (i.e., an integrated Global Navigation Satellite System (GNSS) and Inertial Navigation System (INS). This paper presents an automated framework for the integration of frame RGB images, push-broom hyperspectral scanner data and consumer-grade GNSS/INS navigation data for accurate geometric rectification of the hyperspectral scenes. The approach relies on utilizing the navigation data, together with a modified Speeded-Up Robust Feature (SURF) detector and descriptor, for automating the identification of conjugate features in the RGB and hyperspectral imagery. The SURF modification takes into consideration the available direct geo-referencing information to improve the reliability of the matching procedure in the presence of repetitive texture within a mechanized agricultural field. Identified features are then used to improve the geometric fidelity of the previously ortho-rectified hyperspectral data. Experimental results from two real datasets show that the geometric rectification of the hyperspectral data was improved by almost one order of magnitude.
Synthesis and structure of the unligated carbene of chromium (1993)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and structure of the unligated carbene of chromiumW. E. Billups, Sou Chan Chang, Robert H. Hauge, and John L. MargraveCite this: Inorg. Chem. 1993, 32, 8, 1529–1531Publication Date (Print):April 1, 1993Publication History Published online1 May 2002Published inissue 1 April 1993https://pubs.acs.org/doi/10.1021/ic00060a036https://doi.org/10.1021/ic00060a036research-articleACS PublicationsRequest reuse permissionsArticle Views52Altmetric-Citations9LEARN 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
Aesthetic chills cause an emotional drift in valence and arousal (2022)

Chills are a peak emotional experience induced by stimuli such as music, films, and speeches. The emotional consequences of chills in terms of valence and arousal are still debated and the existing empirical data is conflicting. In this study, we tested the effects of ChillsDB, an open-source repository of chills-inducing stimuli, on the emotional ratings of 600+ participants. We found that chills have a positive effect on valence and arousal as participants experiencing chills reported a significantly greater valence and arousal after the experience than before, as compared to participants who did not experience chills. Furthermore, we found an interesting pattern in the valence ratings of participants, which tended to harmonize towards a similar mean after the experiment, though initially disparately distributed.
Deposition of TiO2 Coatings: Comparison between High Velocity Suspension Flame Spraying (HVSFS), Atmospheric Plasma Spraying and HVOF-spraying (2009)

A TiO2 (anatase) nanopowder suspension was processed by High Velocity Suspension Flame Spraying (HVSFS). The resulting coatings were characterized and compared to conventional atmospheric plasma sprayed (APS) and HVOFsprayed ones. The HVSFS operating parameters can be adjusted in order to achieve dense coatings, with a fine (nearnanosized) structure and a homogeneous distribution of anatase and rutile: these coatings have lower pore interconnectivity and higher wear resistance than APS and HVOF ones. Alternatively, quite large unmelted agglomerates of anatase nanoparticles can be embedded in the coating, increasing the porosity and the anatase content for enhanced photocatalytic efficiency.
Radiation pattern calculation for antennas installed in electrically large dielectric radomes (2008)

When an antenna is installed within a dielectric radome, it is desired that the influence of the radome to the radiation pattern and other parameters be as small as possible. However, due to the complicated shape and the presence of the finite dielectric thickness, the installed radiation pattern will eventually be different in some degree from that of the antenna alone in free-space. Hence, accurately predicting the installed radiation pattern is important to characterize the realistic performance of the antenna. Many numerical approaches exist for this purpose. For electrically small sized radomes, the analysis can be easily carried out using many full-wave methods such as presented in [1] and [2] in which the volume integral equation and surface integral equations are used. For electrically large and smooth dielectric radomes, an approximate method called thin dielectric sheet approximation (TDS) introduced in [4] will be very effective to perform the analysis since only a surface integral equation is involved.
Anomalous Preservation of Pure Methane Hydrate at 1 atm (2001)

Direct measurement of decomposition rates of pure, polycrystalline methane hydrate reveals a thermal regime where methane hydrate metastably "preserves" in bulk by as much as 75 K above its nominal equilibrium temperature (193 K at 1 atm). Rapid release of the sample pore pressure at isothermal conditions between 242 and 271 K preserves up to 93% of the hydrate for at least 24 h, reflecting the greatly suppressed rates of dissociation that characterize this regime. Subsequent warming through the H2O ice point then induces rapid and complete dissociation, allowing controlled recovery of the total expected gas yield. This behavior is in marked contrast to that exhibited by methane hydrate at both colder (193−240 K) and warmer (272−290 K) test conditions, where dissociation rates increase monotonically with increasing temperature. Anomalous preservation has potential application for successful retrieval of natural gas hydrate or hydrate-bearing sediments from remote settings, as well as for temporary low-pressure transport and storage of natural gas.
Etude et developpement d'un tomographe haute resolution pour la radio-imagerie gamma in vivo de petits animaux (1995)

A l'aide du marquage radioactif de molecules, la biologie moleculaire nous revele aujourd'hui certains aspects des mecanismes du fonctionnement cerebral. Cependant l'etude in vivo de ces mecanismes integres sur des modeles de petits animaux, comme le rat ou la souris, necessite le developpement d'imageurs specifiques. La resolution spatiale des methodes d'imagerie tomographique par emission de positrons (pet) et par emission de photon unique (spect) ne permet pas d'aborder les recherches sur ces animaux dont la taille du cerveau est de l'ordre du centimetre cube et les noyaux a visualiser de quelques millimetres cube. Le tomographe haute resolution (tohr) decrit dans ce travail represente une approche originale au probleme de l'imagerie in vivo a petit champ permettant de s'affranchir du compromis entre l'efficacite de detection et la resolution spatiale. Il s'agit d'un compteur de radiation devant lequel se situe une structure collimatrice focalisante a grand angle solide. L'utilisation de radiomarqueurs emettant deux rayonnements en cascade permet, par la detection en coincidence, de bien cerner la zone d'analyse et d'optimiser ainsi la resolution spatiale. L'image est construite voxel par voxel en deplacant relativement cobaye et detecteur. On montre la faisabilite d'un tel systeme a resolution sub millimetrique par des simulations numeriques. La construction de deux modules de collimation et les resultats de leur caracterisation, permettent de conclure que la technologie de l'usinage par attaque chimique est bien adaptee a la realisation d'une structure collimatrice modulaire. Enfin on montre numeriquement l'applicabilite de tohr dans le domaine de la neuropharmacologie chez le rat. Ces resultats permettent d'envisager d'autres axes de recherche qui pourraient en beneficier comme, par exemple, la cancerologie (suivi in vivo des tumeurs), ou encore en therapie genique (suivi de la distribution cerebrale des particules virales injectees chez les rongeurs)
[The effects of enteral nutrition vs parenteral nutrition on gastric motility and gastroenteric hormones after subtotal gastrectomy: a perspective randomized compared clinical trial]. (2006)

The level of gastroenteric hormones and the gastric motility are decreased significantly after subtotal gastrectomy. In contrast with PN, EN could accelerate the recovery of some gastroenteric hormones and the gastric motility after subtotal gastrectomy. GAS, MTL, CCK and EGG are not accurate enough as the marks for prognosticating the postoperative gastroparesis.
Voltage Control of Metal-insulator Transition and Non-volatile Ferroelastic Switching of Resistance in VOx/PMN-PT Heterostructures (2014)

The central challenge in realizing electronics based on strongly correlated electronic states, or 'Mottronics', lies in finding an energy efficient way to switch between the distinct collective phases with a control voltage in a reversible and reproducible manner. In this work, we demonstrate that a voltage-impulse-induced ferroelastic domain switching in the (011)-oriented 0.71Pb(Mg1/3Nb2/3)O3-0.29PbTiO3 (PMN-PT) substrates allows a robust non-volatile tuning of the metal-insulator transition in the VOx films deposited onto them. In such a VOx/PMN-PT heterostructure, the unique two-step electric polarization switching covers up to 90% of the entire poled area and contributes to a homogeneous in-plane anisotropic biaxial strain, which, in turn, enables the lattice changes and results in the suppression of metal-insulator transition in the mechanically coupled VOx films by 6 K with a resistance change up to 40% over a broad range of temperature. These findings provide a framework for realizing in situ and non-volatile tuning of strain-sensitive order parameters in strongly correlated materials, and demonstrate great potentials in delivering reconfigurable, compactable, and energy-efficient electronic devices.
ChemInform Abstract: Manganese‐, Technetium‐ and Rhenium—Hydrogen (2001)

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.
Compensation through Functional Hyperconnectivity: A Longitudinal Connectome Assessment of Mild Traumatic Brain Injury (2015)

Mild traumatic brain injury (mTBI) is a major public health concern. Functional MRI has reported alterations in several brain networks following mTBI. However, the connectome-scale brain network changes are still unknown. In this study, sixteen mTBI patients were prospectively recruited from an emergency department and followed up at 4-6 weeks after injury. Twenty-four healthy controls were also scanned twice with the same time interval. Three hundred fifty-eight brain landmarks that preserve structural and functional correspondence of brain networks across individuals were used to investigate longitudinal brain connectivity. Network-based statistic (NBS) analysis did not find significant difference in the group-by-time interaction and time effects. However, 258 functional pairs show group differences in which mTBI patients have higher functional connectivity. Meta-analysis showed that "Action" and "Cognition" are the most affected functional domains. Categorization of connectomic signatures using multiview group-wise cluster analysis identified two patterns of functional hyperconnectivity among mTBI patients: (I) between the posterior cingulate cortex and the association areas of the brain and (II) between the occipital and the frontal lobes of the brain. Our results demonstrate that brain concussion renders connectome-scale brain network connectivity changes, and the brain tends to be hyperactivated to compensate the pathophysiological disturbances.
In,out‐Isomerism of Phosphorus Bridgehead Cage Compounds (2004)

Abstract For Abstract see ChemInform Abstract in Full Text.
Imaging atherosclerotic plaques by targeting Galectin-3 and activated macrophages using (89Zr)-DFO- Galectin3-F(ab')2 mAb (2020)

<b>Rationale:</b> The high expression of Galectin-3 (Gal3) in macrophages of atherosclerotic plaques suggests its participation in atherosclerosis pathogenesis, and raises the possibility to use it as a target to image disease severity <i>in vivo</i>. Here, we explored the feasibility of tracking atherosclerosis by targeting Gal3 expression in plaques of apolipoprotein E knockout (ApoE-KO) mice <i>via</i> PET imaging. <b>Methods:</b> Targeting of Gal3 in M0-, M1- and M2 (M2a/M2c)-polarized macrophages was assessed <i>in vitro</i> using a Gal3-F(ab')<sub>2</sub> mAb labeled with AlexaFluor®488 and <sup>89</sup>Zr- desferrioxamine-thioureyl-phenyl-isothiocyanate (DFO). To visualize plaques <i>in vivo</i>, ApoE-KO mice were injected i.v. with <sup>89</sup>Zr-DFO-Gal3-F(ab')<sub>2</sub> mAb and imaged via PET/CT 48 h post injection. Whole length aortas harvested from euthanized mice were processed for Sudan-IV staining, autoradiography, and immunostaining for Gal3, CD68 and α-SMA expression. To confirm accumulation of the tracer in plaques, ApoE-KO mice were injected i.v. with Cy5.5-Gal3-F(ab')<sub>2</sub> mAb, euthanized 48 h post injection, followed by cryosections of the body and acquisition of fluorescent images. To explore the clinical potential of this imaging modality, immunostaining for Gal3, CD68 and α-SMA expression were carried out in human plaques. Single cell RNA sequencing (scRNA-Seq) analyses were performed to measure LGALS3 (i.e. a synonym for Gal3) gene expression in each macrophage of several subtypes present in murine or human plaques. <b>Results:</b> Preferential binding to M2 macrophages was observed with both AlexaFluor®488-Gal3-F(ab')<sub>2</sub> and <sup>89</sup>Zr-DFO-Gal3-F(ab')<sub>2</sub> mAbs. Focal and specific <sup>89</sup>Zr-DFO-Gal3-F(ab')<sub>2</sub> mAb uptake was detected in plaques of ApoE-KO mice by PET/CT. Autoradiography and immunohistochemical analyses of aortas confirmed the expression of Gal3 within plaques mainly in macrophages. Moreover, a specific fluorescent signal was visualized within the lesions of vascular structures burdened by plaques in mice. Gal3 expression in human plaques showed similar Gal3 expression patterns when compared to their murine counterparts. <b>Conclusions:</b> Our data reveal that <sup>89</sup>Zr-DFO-Gal3-F(ab')<sub>2</sub> mAb PET/CT is a potentially novel tool to image atherosclerotic plaques at different stages of development, allowing knowledge-based tailored individual intervention in clinically significant disease.
Moving Hadoop into the Cloud with Flexible Slot Management and Speculative Execution (2016)

Load imbalance is a major source of overhead in parallel programs such as MapReduce. Due to the uneven distribution of input data, tasks with more data become stragglers and delay the overall job completion. Running Hadoop in a private cloud opens up opportunities for expediting stragglers with more resources but also introduces problems that often outweigh the performance gain: (1) performance interference from co-running jobs may create new stragglers; (2) there exists a semantic gap between the Hadoop task management and resource pool-based virtual cluster management preventing tasks from using resources efficiently. In this paper, we strive to make Hadoop more resilient to data skew and more efficient in cloud environments. We present <i>FlexSlot</i> , a user-transparent task slot management scheme that automatically identifies map stragglers and resizes their slots accordingly to accelerate task execution. FlexSlot adaptively changes the number of slots on each virtual node to balance the resource usage so that the pool of resources can be efficiently utilized. FlexSlot further improves mitigation of data skew with an adaptive speculative execution strategy. Experimental results show that FlexSlot effectively reduces job completion time up to <inline-formula><tex-math notation="LaTeX">$47.2$</tex-math></inline-formula> percent compared to stock Hadoop and two recently proposed skew mitigation and speculative execution approaches.
Is BAC Transgenesis Obsolete? State of the Art in the Era of Designer Nucleases (2012)

DNA constructs based on bacterial artificial chromosomes (BACs) are frequently used to generate transgenic animals as they reduce the influence of position effects and allow predictable expression patterns for genes whose regulatory sequences are not fully identified. Despite these advantages BAC transgenics suffer from drawbacks such as complicated vector construction, low efficiency of transgenesis, and some remaining expression variegation. The recent development of transcription activator-like effector nucleases (TALENs) and zinc finger nucleases (ZFNs) has resulted in new transgenic techniques which do not have the drawbacks associated with BAC transgenesis. Initial reports indicate that such designer nucleases (DNs) allow the targeted insertion of transgenes into endogenous loci by direct injection of the targeting vector and mRNA/DNA encoding the predesigned nucleases into oocytes. This results in the transgene being inserted at a specific locus in the mouse genome, thus circumventing the drawbacks associated with BAC transgenesis.
Efficiency of Embryo Rescue Technology in St. Augustinegrass Breeding (2017)

St. Augustinegrass [ Stenotaphrum secundatum (Walt.) Kuntze] is a popular warm‐season turfgrass in Gulf Coast regions of the United States. Diploid St. Augustinegrass produces fertile seed, but triploids and higher polyploids are mostly sterile. Polyploid St. Augustinegrass cultivars have been selected for their resistance to southern chinch bugs, St. Augustine Decline, and drought tolerance but lack the cold hardiness and shade tolerance of diploids. However, because of sterility barriers, the polyploid germplasm had not been fully used as breeding material until 2009 when we reported the development of interploid hybrids using embryo rescue technology. The objective of the present study was to backcross these first‐generation interploid hybrids with diploid males to produce second‐generation hybrids. Sterility barriers were found to be much greater with second‐generation crosses yielding only 0.00 to 2.69% progeny per interploid hybrid. Using this technique, the embryos are generally rescued 3 wk postpollination, thereby causing a heavy demand on one's time to process spikelets before embryos abort. Our preliminary findings show the use of cold storage at 7°C to potentially extend the processing period up to 2 mo with a slight drop off in efficiency (4.37–6.03% crossability). Our results also show the potential of first‐generation hybrids to exhibit superior performance under drought when compared with diploid cultivars Palmetto and Raleigh. Tested second‐generation interploids did not exhibit superior performance in drought. Nonetheless, our results emphasize the utility of embryo rescue technology in facilitating gene exchange between ploidy levels to generate hybrids with superior performance.