gebhart/patrepeval huggingface dataset:
Contribution a la reconstruction de scenes constituees d'objets cylindriques et polyedriques a partir de sequences d'images acquises par une camera en mouvement (1992)

La perception de l'environnement est un processus important qui permet a un robot d'intervenir dans un milieu etranger. Bien qu'il existe de nombreux capteurs pour lui donner la vue, la camera video semble jouer un role preponderant. Les travaux presentes dans ce memoire portent sur la reconstruction de scenes constituees d'objets cylindriques et polyedriques a l'aide de sequences d'images acquises avec une camera en mouvement. Deux procedes de reconstruction s'appuyant sur l'evolution des contours apparents des objets dans une sequence sont exposes. La premiere approche a ete developpee en considerant que le mouvement de la camera est parfaitement connu. En depit des resultats interessants obtenus avec cette technique, son utilisation est contraignante, car elle impose des conditions particulieres. Pour s'affranchir de l'evaluation minutieuse des deplacements de la camera, une seconde methode est presentee, qui realise simultanement l'estimation des parametres des objets et de recalage de la camera. Cette approche utilise, au mieux, une connaissance grossiere des deplacements de la camera fournie par le systeme de commande du robot, sur lequel ce capteur est embarque. La prise en compte optimale d'une information a priori et le caractere dynamique du modele a estimer, nous ont amene a mettre en uvre le filtre de kalman. Des essais de reconstruction pour ces deux procedes avec des images de synthese et des images reelles demontrent leur validite. Une procedure de calibrage pour les cameras video est egalement proposee, afin que les representations des scenes issues des procedes de reconstruction soient les plus fideles possibles
ChemInform Abstract: Molecular Modeling of Biological Electron Transfer via Molecular Recognition — Synthetic Receptor for Ubiquinone and Cytochrome C (1999)

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.
Nerve Agents and Their Detection (2014)

Nerve agents are major chemical warfare agents with the "G series" and "V series" being the most widely known because of their lethal effect. Although not conspicuously used in major wars, the potential detrimental impact on modern society had been revealed from the sarin terror attack on Tokyo subway, which affected thousands of people. In this mini-review, major nerve agents of the "G series" and "V series" have been described along with various types of their detection methods. The physical properties and hydrolysis mechanisms of the major nerve agents are discussed since these are important factors to be considered in choosing detection methods, and specifying the procedures for sample preparations in order to enhance detection precision. Various types of extraction methods, including liquid-phase, solid-phase, gas-phase and solid-phase microextraction (SPME), are described. Recent development in the use of gas sensors for detecting nerve agents is also summarized.
Current status of gastrointestinal tonometry (2000)

The use of gastric tonometry for the measurement of splanchnic perfusion as a surrogate of tissue oxygen delivery is a well-established technique, but one that has not enjoyed widespread clinical usage. Automated air tonometry, together with the measurement of gastric to arterial or end-tidal alveolar differences in carbon dioxide tension, is starting to replace the use of saline tonometry and the measurement of intramucosal pH. Although this technique is in the early stages of validation, it is thought that it will be a more clinically useful tool.
Dual Roles of RNF2 in Melanoma Progression (2015)

The role of epigenetic regulators in cancer progression is being increasingly appreciated. We show novel roles for RNF2 in melanoma tumorigenesis and metastasis, albeit via different mechanisms. Our findings support the notion that epigenetic regulators, such as RNF2, directly and functionally control powerful gene networks that are vital in multiple cancer processes.
Crystal Structure of 3a-Hydroxy-3,5a,9-trimethyl 1,3,3a,4,5,5a,6,7,8,9b decahydro-2H naphtha[1,2c]-imidazole-2-one Monohydrate from the Plant Sphaeranthus indicus (2005)

The title compound, C14H22N2O2·H2O, derived from a plant Sphaeranthus indicus, has crystallized in non-centro symmetric space group P212121 with one molecule in the asymmetric unit. The crystal structure is stabilized by C-H…N and O-H…O intramolecular hydrogen bonds and the molecular packing is stabilized by intermolecular O-H…O hydrogen bonds.
Cervicovaginal Safety of the Formulated, Biguanide‐Based Human Immunodeficiency Virus Type 1 (HIV‐1) Inhibitor NB325 in a Murine Model (2011)

Vaginal microbicides that reduce or eliminate the risk of HIV-1 sexual transmission must do so safely without adversely affecting the integrity of the cervicovaginal epithelium. The present studies were performed to assess the safety of the biguanide-based antiviral compound NB325 in a formulation suitable for topical application. Experiments were performed using a mouse model of cervicovaginal microbicide application, which was previously shown to be predictive of topical agent toxicity revealed in microbicide clinical trials. Mice were exposed vaginally to unformulated NB325 or NB325 formulated in the hydroxyethyl cellulose "universal placebo." Following exposures to formulated 1% NB325 for 10 min to 24 h, the vaginal and cervical epithelia were generally intact, although some areas of minimal vaginal epithelial damage were noted. Although formulated NB325 appeared generally safe for application in these studies, the low but observable level of toxicity suggests the need for improvements in the compound and/or formulation.
Modified biconical antenna for ultrawideband applications (2016)

In this paper a compact antenna for ultrawideband applications is presented. The antenna is based on the biconical antenna design and has two identical elements. Each element is composed of a cone extended with a ring and an inner cylinder. The modification of the well-known biconical structure is made in order to reduce the influence of the radiation of the feeding cable. To obtain the optimum parameters leading to a less impact of the cable effect on the antenna performance, during the optimization process the antenna was coupled with a feeding coaxial cable. The proposed antenna covers the frequency range from 1.5 to 41 GHz with voltage standing wave ratio below 2 and has an omnidirectional radiation pattern. The realized total efficiency is above 85 % which indicates a good performance.
Solution Growth of Rubrene Single Crystals Using Various Organic Solvents (2008)

To fabricate organic field-effect transistors (OFETs) with high carrier mobility, we attempted to grow 5,6,11,12-tetraphenylnaphthacene (rubrene) single crystals from solution and to improve their quality. Investigations into solvents in which rubrene was highly soluble proved that its solubility depended on the presence or absence of aromatic rings and chloro groups rather than on the polarity of the solvents. Rubrene crystals were grown from aromatic solvents, specifically from toluene, p-xylene, and aniline solvents, as well as from 1,2-dichloroethane (DCE) solvent. As a result, rubrene single crystals larger than 1 mm were obtained. Powder X-ray diffraction (XRD) analysis showed that the crystals obtained from the p-xylene and toluene solvents were rubrene, and 1H-nuclear magnetic resonance (1H-NMR) measurement proved that the crystals had not incorporated the solvent at the detection level. In addition, atomic force microscopy (AFM) confirmed that the rubrene crystals grown from the p-xylene and aniline solvents had flat faces and that the crystal from the p-xylene solvent had monomolecular steps on parts of the surfaces. Rubrene single crystal OFETs with graphite electrodes and parylene as an insulator showed carrier mobilities of ∼0.75 cm2 V-1 s-1.
An improved PCP signaling detector with reduced implementation complexity (2009)

An adaptive Orthogonal Frequency Division Multiplexing (OFDM) system, having precoded cyclic prefix (PCP) was proposed earlier as a way to carry the control signaling parameters to provide much needed flexible transmission techniques in cognitive radio (CR) communications. The ultimate goal of the PCP-OFDM system is to achieve concurrent transmission of CR control signaling parameters with data information. Therefore, hardware and computational efficient demodulation of PCP is of huge importance to recover the signaling parameters and for the design of fair spectrum sharing mechanism in cognitive radio scenario. But due to the hardware and computational complexity of the conventional optimal matched filter, recently a demodulator was proposed in paper which has reduced complexity than the conventional approach. However, the complexity is still high which is often very difficult to implement and also not cost-effective. In this paper, we propose a low complexity demodulator for the efficient demodulation of the signaling information carried by the PCPs. Design of this demodulator is presented and performance is evaluated through the simulations in different channel scenarios. Along with a peak combining technique, impact of the multipath impairment can be mitigated to a reasonable extent. More importantly, the hardware and computational complexity is reduced substantially compared with the other techniques proposed earlier. It is also found from the numerical simulation results that this demodulation scheme provides the same performance as the conventional optimal matched filter, with significantly reduced hardware and computational complexity, therefore reducing the overall complexity and cost of the PCP-OFDM receiver.
ChemInform Abstract: A Facile Synthesis of Carboxamides by Dehydration Condensation Between Free Carboxylic Acids and Amines Using O,O′‐Di(2‐pyridyl) Thiocarbonate as a Coupling Reagent. (2000)

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.
Unified Atomic Mass Unit (2016)

This document contains recommendations for terminology in mass spectrometry. Development of standard terms dates back to 1974 when the IUPAC Commission on Analytical Nomenclature issued recommendations on mass spectrometry terms and definitions. In 1978, the IUPAC Commission on Molecular Structure and Spectroscopy updated and extended the recommendations and made further recommendations regarding symbols, acronyms, and abbreviations. The IUPAC Physical Chemistry Division Commission on Molecular Structure and Spectroscopy’s Subcommittee on Mass Spectroscopy revised the recommended terms in 1991 and appended terms relating to vacuum technology. Some additional terms related to tandem mass spectrometry were added in 1993 and accelerator mass spectrometry in 1994. Owing to the rapid expansion of the field in the intervening years, particularly in mass spectrometry of biomolecules, a further revision of the recommendations has become necessary. This document contains a comprehensive revision of mass spectrometry terminology that represents the current consensus of the mass spectrometry community.
<title>Reactive sputtering of Si/SiN<formula><inf><roman>x</roman></inf></formula> quarter-wave dielectric mirrors using in-situ laser reflectometry</title> (1992)

We demonstrate a computer automated system for reactive sputter deposition of silicon and silicon nitride that features a laser reflectometer as an in-situ monitoring tool. A hollow anode was designed specifically for this purpose and enables in-situ reflectivity measurements at normal incidence to the wafer. We describe the use of this system for in-situ determination of the deposition rate and the material optical properties (refraedve index and loss). Finally we describe the fabrication of high precision Si/SiNx quarter-wave dielectric mirrors for opto-electronic applications by means of an in-situ feedback control algorithm.
High‐Throughput Characterisation of Materials by Photoluminescence Spectroscopy (2004)

An automatic system for high-throughput (HT) characterisation of large libraries of solid materials by photoluminescence spectroscopy is described. The system provides time-resolved transient emission spectra in the microsecond scale and can be employed for characterisation of materials of interest in the fields of catalysis and electroluminescence, amongst others. Here, we present its application to the optimisation of the ship-in-a-bottle synthesis of a novel electroluminescent polymer (PPV) and a photocatalyst (TP+), both encapsulated in large-pore zeolites.
MRI-coupled fluorescence tomography of murine glioma metabolic activity (2008)

Protoporphyrin IX fluorescence activity in mouse model gliomas is imaged in nude mice using an MRI-coupled spectroscopy scanner. Segmented MR images acquired simultaneously with fluorescence spectra are used to guide fluorescence yield reconstruction.
Formation of Fine Particles of Zinc Sulfide from Thiourea Complexes by Spray Pyrolysis (1995)

Fine particles of ZnS were able to be prepared by ultrasonic spray pyrolysis of an aqueous solution containing Zn(NO 3 ) 2 and SC(NH 2 ) 2 in appropriate molar ratios, the carrier gas being N 2 . The particles obtained were spherical with smooth surfaces ranging from 0.5 to 1.3 µ m in diameter. Their crystalline phase was hexagonal when deposited at around 800° C; the particles obtained at low temperatures such as 400° C were amorphous, whereas the pyrolysis at 900° C produced ZnS particles including a zinc oxide phase.
Rethinking the mobile and wireless network architecture: The METIS research into 5G (2014)

The METIS project is laying the foundation of 5G mobile and wireless communication systems putting together the point of view of vendors, operators, third party players and academia. In particular, METIS is developing and evaluating the key technology components of 5G systems. In this framework, a new mobile and wireless network architecture is required to accommodate those technical enablers and communication paradigms while taking into account existing and emerging architectural trends. This article provides an overview of the METIS system and architecture research into this future mobile and wireless network, discussing various alternatives and perspectives.
Path Encoding in Segment Routing (2015)

Segment Routing (SR) is emerging as an innovative traffic engineering technique compatible with traditional MPLS data plane. SR relies on label stacking, without requiring a signaling protocol. This greatly simplifies network operations in transit nodes. However, it may introduce scalability issues at the ingress node and packet overhead. Therefore, specific algorithms are required to efficiently compute the label stack for a given path. This study proposes two algorithms for SR label stack computation of strict routes that guarantee minimum label stack depth. Then, SR scalability performance is investigated. Results show that, in most of the cases, SR uses label stacks composed of few labels and introduces a limited packet overhead. However, relevant scalability issues may arise in specific cases, e.g., large planar topologies.
Performance analysis of replicated self‐routing switch model with multiple priority classes (1999)

In this paper, we propose the input-buffered replicated self-routing switch model with multiple priority classes in order to satisfy different demands of several traffic cell classes. The priority path setup discipline at each switching element is proposed in order to perform priority path setup when two cells of higher- and lower-priority classes arrive at the switching element. The nonpreemptive priority discipline at the external input buffers outside the switch for each class of cells is employed so that a higher-priority cell is served first at the head of the line (HOL), whereas it has to wait in the buffer until the completion of the low-priority cell in service. We analyze the system delay of every priority class cell for the random sharing model which distributes the cells randomly on the R planes, as well as the alternate sharing model which avoids contentions in the first log2R stages of each plane which serves Bernoulli arrival cells. Furthermore, when the buffer size for high-priority cells is limited, we consider the relation between the cell loss probability and input buffer sizes for two classes, and obtain the proper buffer size for the high-priority cells by computer simulation. It is seen that the proposed model is effective in showing the priority for different class cells. © 1999 Scripta Technica, Electron Comm Jpn Pt 1, 82(7): 1–11, 1999
Plasma Protein Binding by Monosodium Urate Crystals (1983)

Using 2-dimensional O'Farrell gel electrophoresis, we have mapped the proteins from undiluted plasma and serum which bind to monosodium urate (MSU) crystals. More than 30 crystal-associated polypeptides were visualized, including anionic and cationic species. Proteins increased on the crystals relative to plasma included C1q, C1-r, C1-s, fibronectin, fibrinogen, and kininogen. Crystal-bound polypeptides derived from IgG, albumin, and transferrin were recovered in decreased amounts relative to plasma. Direct evidence for activation of the complement and coagulation systems in plasma was provided by the identification of crystal-associated activation fragments of C1 and kininogen. Plasmas deficient in selected proteins (e.g., C1q and IgG) were used to define the role of these proteins in such activation events and confirmed activation of C1 in immunoglobulin-deficient plasma by MSU crystals. In summary, we have described a high resolution, semiquantitative approach to analyze protein binding to crystals, have documented the complexity of crystal-plasma protein interaction, and have provided direct evidence for the binding of coagulation system proteins and binding and activation of complement by MSU crystals, in whole plasma and IgG-deficient plasma.
Expression of PTEN and phosphorylated Akt in human cholesteatoma epithelium (2008)

In cholesteatoma, p-Akt expression was significantly higher than in RA skin, whereas PTEN expression was significantly lower in cholesteatoma when compared with skin (p < 0.05). Immunohistochemical analysis showed that weak PTEN immunoreactivity was observed in the nuclei of cholesteatoma epithelium, whereas strong PTEN immunoreactivity was detected in the nuclei of skin. Also, strong p-Akt immunoreactivity was observed in the cytoplasm of cholesteatoma epithelium, whereas very weak or no p-Akt immunoreactivity was observed in the RA skin. Furthermore, we found that a significant inverse correlation exists between PTEN and p-Akt expression (r = -0.796).
Analysis and evaluation of Metropolitan Mesh Machine networks performance in Smart Grid and Smart Metering scenarios (2012)

The impact of propagation parameters on Metropolitan Mesh Machine Network performances is investigated in different smart metering scenarios based on a Monte Carlo simulation model. The impact of transmission power and the variation of node density have been investigated to maximize network performance.
Group X Secretory Phospholipase A2 Enhances TLR4 Signaling in Macrophages (2011)

Secretory phospholipase A(2)s (sPLA(2)) hydrolyze glycerophospholipids to liberate lysophospholipids and free fatty acids. Although group X (GX) sPLA(2) is recognized as the most potent mammalian sPLA(2) in vitro, its precise physiological function(s) remains unclear. We recently reported that GX sPLA(2) suppresses activation of the liver X receptor in macrophages, resulting in reduced expression of liver X receptor-responsive genes including ATP-binding cassette transporters A1 (ABCA1) and G1 (ABCG1), and a consequent decrease in cellular cholesterol efflux and increase in cellular cholesterol content (Shridas et al. 2010. Arterioscler. Thromb. Vasc. Biol. 30: 2014-2021). In this study, we provide evidence that GX sPLA(2) modulates macrophage inflammatory responses by altering cellular cholesterol homeostasis. Transgenic expression or exogenous addition of GX sPLA(2) resulted in a significantly higher induction of TNF-α, IL-6, and cyclooxygenase-2 in J774 macrophage-like cells in response to LPS. This effect required GX sPLA(2) catalytic activity, and was abolished in macrophages that lack either TLR4 or MyD88. The hypersensitivity to LPS in cells overexpressing GX sPLA(2) was reversed when cellular free cholesterol was normalized using cyclodextrin. Consistent with results from gain-of-function studies, peritoneal macrophages from GX sPLA(2)-deficient mice exhibited a significantly dampened response to LPS. Plasma concentrations of inflammatory cytokines were significantly lower in GX sPLA(2)-deficient mice compared with wild-type mice after LPS administration. Thus, GX sPLA(2) amplifies signaling through TLR4 by a mechanism that is dependent on its catalytic activity. Our data indicate this effect is mediated through alterations in plasma membrane free cholesterol and lipid raft content.
Expression Microdissection (2004)

Tissue microdissection is an important method for the study of disease states. However, it is difficult to perform high-throughput molecular analysis with current techniques. We describe here a prototype version of a novel technique (expression microdissection) that allows for the procurement of desired cells via molecular targeting. Expression microdissection (xMD) offers significant advantages over available methods, including an increase in dissection speed of several orders of magnitude. xMD may become a valuable tool for investigators studying cancer or other disease states in patient specimens and animal models.
Evidence of specific inflammatory condition in nucleus tractus solitarii of spontaneously hypertensive rats (2009)

Since the nucleus tractus solitarii (NTS) is a pivotal region for regulating the set-point of arterial pressure, we proposed a role for it in the development of neurogenic hypertension. Recent studies have suggested that proinflammatory molecules, such as junctional adhesion molecule 1 (JAM-1) are highly expressed in the NTS of an animal model of human essential hypertension, the spontaneously hypertensive rat (SHR), compared with normotensive rats (Wistar-Kyoto, WKY). Moreover, we have also shown endogenous leukocyte accumulation inside capillaries within the NTS of SHR but not WKY rats. Based on this evidence, we hypothesized that gene expression of cytokines/chemokines is altered in the NTS of SHR. We have screened for abnormally expressed inflammatory mediators in the NTS of SHR using the RT2 Profiler PCR arrays, which were designed specifically to target major cytokines/chemokines. The specific PCR array revealed that seven genes were less expressed in the NTS of SHR compared with WKY rats (more than twofold differences), while only two genes were more expressed in the SHR. Moreover, we identified that some of these validated molecules exhibit important functional roles for cardiovascular homeostasis at the level of the NTS. We suggest that abnormal gene expression of proinflammatory molecules, such as JAM-1, causes leukocyte accumulation within the vasculature in the NTS of SHR. Consequently, gene expression of specific cytokines/chemokines may be downregulated to avoid further strong inflammatory activity in the NTS of SHR at the expense of an alteration in neuronal activity that leads to cardiovascular autonomic pathology. Importantly, to allow translation of our work, these novel insights need to be assessed in hypertensive human brainstem tissue; their confirmation could lead to novel therapeutic approaches for one of the world's most prevalent diseases.