gebhart/patrepeval huggingface dataset:
Indoor Power-Line Communications Channel Characterization Up to 100 MHz—Part I: One-Parameter Deterministic Model (2008)

Advanced communication technologies have allowed the power-line-communication (PLC) channel to be a transmission medium that enables the transfer of high-speed digital data over the classical indoor electrical wires. The development of PLC systems for Internet, voice, and data services requires measurement-based models of the transfer characteristics of the mains network suitable for performance analysis by simulation. This paper presents a deterministic model describing the magnitude and phase of complex transfer functions of power-line networks using only one parameter. First, a PLC channel classification is realized, and an average magnitude and phase channel model by class is proposed. Second, the multipath characteristic of PLC channels is introduced. A statistical-based channel magnitude generator is built, and a group delay-based phase model is suggested.
<title>Development of a confocal laser scanning fluorescence microscope using two-photon excitation in combination with time-gated detection</title> (1995)

Fluorescent molecules having single-photon absorption in the blue and the UV can be excited with infra-red light via a process known as two-photon excitation. The combination of this technique with scanning techniques can be exploited for 3D microscopic imaging. The two- photon process is confined to a restricted volume in the sample determined by the laser focus, resulting in inherent confocality. Other advantages are reduced photo-bleaching of the samples and a larger penetration depth of the excitation light. The implementation of time-gated detection techniques allows fluorescent lifetime imaging. This drastically improves the selectivity and contrast of the images.
Fuzzy control of ABR traffic flow in ATM LANs (2002)

High-speed LANs are beginning to migrate from shared media to switch based configurations (commonly based on ATM architectures). Because of the characteristics of ATM networks and nature of LAN traffic, there is a need for effective congestion control strategies to be developed in order to maintain the network utilization and throughput at optimum levels. We describe and report the simulation results of a novel congestion control strategy based on the principles of fuzzy logic control for the management of ABR traffic in ATM LANs. We propose that fuzzy logic control is an effective scheme for designing congestion control mechanisms in ATM LANs. Our simulations show that, proposed fuzzy backward congestion notification (FBCN) method is effective in minimizing cell losses at the switch queues and prevents time consuming packet retransmissions which can dramatically degrade the network throughput.
Transforming growth factor beta directly regulates primitive murine hematopoietic cell proliferation (1990)

We previously reported that transforming growth factor beta (TGF-beta) selectively inhibits colony-stimulating factor-driven hematopoietic progenitor cell growth. We report here that TGF-beta 1 can act directly on hematopoietic progenitors to inhibit the growth of the most primitive progenitors measurable in vitro. Highly enriched populations of hematopoietic progenitor cells were obtained by isolating lineage negative (Lin-), Thy-1-positive (Thy-1+) fresh bone marrow cells, or by isolating cells from interleukin-3 (IL-3) supplemented bone marrow cultures expressing Thy-1 antigen with the fluorescent activated cell sorter. TGF-beta 1 inhibited IL-3-induced Thy-1 expression on Thy-1-negative (Thy-1-) bone marrow cells in a dose-dependent manner with an ED50 of 5 to 10 pmol/L. In addition, TGF-beta 1 inhibited the formation of multipotent and mixed colonies by isolated Thy-1+ cells, while single lineage granulocyte and macrophage colonies were not affected. The growth of Thy-1+ Lin- cells incubated as single cells in Terasaki plates in medium supplemented with IL-3 were inhibited by TGF-beta, demonstrating a direct inhibitory effect. Hematopoietic stem cells, which have a high proliferative potential (HPP) when responding to combinations of growth factors in vitro, have been detected in the bone marrow of normal mice and mice surviving a single injection of 5-fluorouracil. TGF-beta 1 inhibited the growth of all subpopulations of HPP colony forming cells (CFC) in a dose-dependent manner with an ED50 of 5 to 10 pmol/L. Thus, TGF-beta directly inhibits the growth of the most immature hematopoietic cells measurable in vitro.
Controlled High-Speed Anionic Polymerization of Propylene Oxide Initiated by Onium Salts in the Presence of Triisobutylaluminum (2007)

The conventional anionic polymerization of propylene oxide (POx) proceeds at a very slow rate in low polar media and is characterized by an important transfer reaction to monomer. This only allows the formation of poly(propylene oxide) oligomers. A new polymerization strategy allowing the fast and controlled anionic polymerization of POx has been developed. It is based on the formation of complexes with both the anionic initiator and the monomer. The influences of alkali metal alkoxides (i-PrONa), ammonium salts (NBu4Cl and NOct4Br), and phosphonium salts (PBu4Cl) as initiators, in combination with triisobutylaluminum, have been investigated in terms of reactivity, molar mass control, livingness, and polymerization mechanism. PPOx with narrow polydispersities and controlled molar masses, up to 150 000 g/mol, have been obtained in hydrocarbon media, at low temperature, and in short reaction times.
Novel hypertonic saline–sodium hydroxide (HS–SH) method for decontamination and concentration of sputum samples for Mycobacterium tuberculosis microscopy and culture (2008)

This study evaluated a new decontamination and concentration (DC) method for sputum microscopy and culture. Sputum samples from patients with suspected pulmonary tuberculosis (TB) (n=106) were tested using the proposed hypertonic saline-sodium hydroxide (HS-SH) DC method, the recommended N-acetyl-L-cysteine-sodium citrate-sodium hydroxide (NALC-NaOH) DC method and unconcentrated direct smear (Ziehl-Neelsen) techniques for the presence of mycobacteria using Löwenstein-Jensen culture and light microscopy. Of 94 valid specimens, 21 (22.3%) were positive in culture and were further characterized as Mycobacterium tuberculosis. The sensitivity for acid-fast bacilli (AFB) smears was increased from 28.6% using the direct method to 71.4% (HS-SH) and 66.7% (NALC-NaOH) using DC methods. Both concentration techniques were highly comparable for culture (kappa=0.794) and smear (kappa=0.631) for AFB. Thus the proposed HS-SH DC method improved the sensitivity of AFB microscopy compared with a routine unconcentrated direct smear; its performance was comparable to that of the NALC-NaOH DC method for AFB smears and culture, but it was methodologically simpler and less expensive, making it a promising candidate for evaluation by national TB control programmes in developing countries.
Incremental structuring of knowledge base—incremental construction method of rete network (1989)

Abstract It is useful in improving the efficiency of the inference execution in production systems to structure the rule set. With the increase of the scale of the rule base, however, the structuring processing itself is a great burden, thus decreasing the efficiency in development. When the knowledge base is to be developed in the sequential and trial‐and‐error programming style, the knowledge is frequently added or removed, which is a serious problem. From such a viewpoint, a function is provided in OPS5 and in other systems whereby the existing Rete network is modified incrementally when the rule is to be added or removed. There has been no detailed report, however, on such a function. This paper proposes a new structuring method by applying Rete algorithm and discussing its relation to the existing techniques. In the proposed method, the information needed for the modification of the network is derived by feeding the condition pattern composing the condition part of the rule to the current Rete network as a token. The information concerning the consistency between the added rule and the existing rules can also be obtained.
Molecular Analysis of Regulatory and Structural xyl Genes of the TOL Plasmid pWW53-4 (1987)

pWW53-4 is a cointegrate between RP4 and the catabolic plasmid pWW53 from Pseudomonas putida MT53, which contains 36 kbp of pWW53 DNA inserted close to the oriV gene of RP4; it encodes the ability to grow on toluene and the xylenes, characteristic of pWW53, as well as resistance to tetracycline, kanamycin and carbenicillin, characteristic of RP4. A physical map of the 36 kbp insert of pWW53 DNA for 11 restriction enzymes is presented, showing that the relative positions of the two xyl operons are different from those on the archetypal TOL plasmid pWW0. The location of the genes for 4-oxalocrotonate decarboxylase (xylI) and 4-oxalocrotonate tautomerase (xylH) were shown by subcloning and enzyme assay to lie at the distal end of the meta pathway operon. Although 2-oxopent-4-enoate hydratase (xylJ) and 4-hydroxy-2-oxovalerate aldolase (xylK) could be detected on a large cloned HindIII fragment, they could not be accurately located on smaller subcloned DNA, but the only credible position for them is between xylF and xylI. The gene order in the meta pathway operon is therefore xylDLEGF(J,K)IH. The regulatory genes xylS and xylR were located close to and downstream of the meta pathway operon, and the restriction map of the DNA in this region, as has previously been shown for the two operons carrying the structural genes, shows similarities with the corresponding region on pWW0. Evidence is also presented for the existence of two promoters, termed P3 and P4, internal to the meta pathway operon which support low constitutive expression of the structural genes downstream in Pseudomonas hosts but not in E. coli.
A rigorous approach to support the maintenance of large portable software (2002)

Very often, portability of large software products is achieved via the empirical use of old tools like CPP, the preprocessor of the C language. Though powerful low level features like conditional compilation cause serious maintenance problems. There is a lack of adequate tools to support such activities. The paper presents our approach to this problem. We introduce APP, an abstract language semantically equivalent to CPP but based on traditional programming-in-the-small concepts. A rigorous description of the semantics of this language makes it possible to develop reliable reverse engineering tools.
The <i>Pseudomonas</i> Toxin Pyocyanin Inhibits the Dual Oxidase-Based Antimicrobial System as It Imposes Oxidative Stress on Airway Epithelial Cells (2008)

The dual oxidase-thiocyanate-lactoperoxidase (Duox/SCN(-)/LPO) system generates the microbicidal oxidant hypothiocyanite in the airway surface liquid by using LPO, thiocyanate, and Duox-derived hydrogen peroxide released from the apical surface of the airway epithelium. This system is effective against several microorganisms that infect airways of cystic fibrosis and other immunocompromised patients. We show herein that exposure of airway epithelial cells to Pseudomonas aeruginosa obtained from long-term cultures inhibits Duox1-dependent hydrogen peroxide release, suggesting that some microbial factor suppresses Duox activity. These inhibitory effects are not seen with the pyocyanin-deficient P. aeruginosa strain PA14 Phz1/2. We show that purified pyocyanin, a redox-active virulence factor produced by P. aeruginosa, inhibits human airway cell Duox activity by depleting intracellular stores of NADPH, as it generates intracellular superoxide. Long-term exposure of human airway (primary normal human bronchial and NCI-H292) cells to pyocyanin also blocks induction of Duox1 by Th2 cytokines (IL-4, IL-13), which was prevented by the antioxidants glutathione and N-acetylcysteine. Furthermore, we showed that low concentrations of pyocyanin blocked killing of wild-type P. aeruginosa by the Duox/SCN(-)/LPO system on primary normal human bronchial epithelial cells. Thus, pyocyanin can subvert Pseudomonas killing by the Duox-based system as it imposes oxidative stress on the host. We also show that lactoperoxidase can oxidize pyocyanin, thereby diminishing its cytotoxicity. These data establish a novel role for pyocyanin in the survival of P. aeruginosa in human airways through competitive redox-based reactions between the pathogen and host.
LCMV-Specific, Class II-Restricted Cytotoxic T Cells in β2-Microglobulin-Deficient Mice (1992)

Intracranial infection of normal mice with lymphocytic choriomeningitis virus (LCMV) causes meningitis and death mediated by CD8+ major histocompatibility complex (MHC) class I-restricted cytotoxic T lymphocytes (CTLs). beta 2-Microglobulin-deficient mice (beta 2M-/-) do not express functional MHC class I proteins and do not produce significant numbers of CD8+ T cells. When beta 2M-/- mice were infected with LCMV, many died from LCMV disease and produced a specific response to LCMV mediated by CD4+ CTLs that were class II-restricted. In these mice, CD4+ CTLs may compensate for the lack of CD8+ CTLs.
Enhanced uptake of [11C]TPMP in canine brain tumor: a PET study. (1999)

The enhanced uptake and prolonged retention in tumor suggest [11C]TPMP as a promising means for imaging of gliomas in dogs. The need for studies in humans is indicated.
A lightweight dynamic conversation controller for e-services (2002)

As services become more loosely coupled and increasingly autonomous, heterogeneous distributed services should be able to discover and converse with each other dynamically, with or without human intervention. Current paradigms of service interaction require service developers to hardcode their logic to adhere strictly to pre-defined conversation policies. We propose a mechanism for a conversation controller that can free service (and, to some extent, client) developers from having to couple business and conversation logic. We also describe our implementation of a prototype conversation controller. The conversation controller can direct and track spontaneous conversations between services and clients, thus enabling services to carry out an entire conversation without the service developers having to implement any explicit conversation control mechanisms.
Emerging modes of collective cell migration induced by geometrical constraints (2012)

The role of geometrical confinement on collective cell migration has been recognized but has not been elucidated yet. Here, we show that the geometrical properties of the environment regulate the formation of collective cell migration patterns through cell-cell interactions. Using microfabrication techniques to allow epithelial cell sheets to migrate into strips whose width was varied from one up to several cell diameters, we identified the modes of collective migration in response to geometrical constraints. We observed that a decrease in the width of the strips is accompanied by an overall increase in the speed of the migrating cell sheet. Moreover, large-scale vortices over tens of cell lengths appeared in the wide strips whereas a contraction-elongation type of motion is observed in the narrow strips. Velocity fields and traction force signatures within the cellular population revealed migration modes with alternative pulling and/or pushing mechanisms that depend on extrinsic constraints. Force transmission through intercellular contacts plays a key role in this process because the disruption of cell-cell junctions abolishes directed collective migration and passive cell-cell adhesions tend to move the cells uniformly together independent of the geometry. Altogether, these findings not only demonstrate the existence of patterns of collective cell migration depending on external constraints but also provide a mechanical explanation for how large-scale interactions through cell-cell junctions can feed back to regulate the organization of migrating tissues.
A programmable 1.8-18 MHz high-Q fully-differential continuous-time filter with 1.5-2 V power-supply (2002)

A simple CMOS current-mode filter is presented. Its basic building block is a transconductor. It is comprised of a MOS transistor driver operating in the triode region cascoded with a MOS transistor current source at the output. This circuit can be employed in high-frequency continuous-time current-mode filters using a /spl plusmn/1 V power supply while dissipating less than 1 mW of power. To illustrate the methodology a second-order fully-differential bandpass filter with programmable f/sub 0/ and Q tuning is demonstrated. This filter dissipates less than 0.5 mW/pole with a /spl plusmn/1 V power supply and occupies an area of 0.6 mm/sup 2/ using a MOSIS Orbit 2 /spl mu/m CMOS technology.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
All-solution-processed-inverted polymer solar cells on PET substrates with CuOx thin film as an anode interlayer (2010)

Low-cost solution process becomes the strategic principle for the fabrication of polymer solar cell. However, the cathode or anode interlayer are usually deposited by using vacuum evaporation due to the hydrophobicity problem and the temperature restriction of PET substrates. Here, we have successfully fabricated copper oxide (CuO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">x</sub> ) thin film as an anode interlayer in the inverted P3HT:PC <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">61</sub> BM solar cells on the PET substrates at low temperature via the sol-gel method. The CuO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">x</sub> thin film can module the Schottky barrier and form an ohmic contact at the organic/metal interface, which make it a great hole transportation layer. In addition, we post- anneal the devices at 110°C to compensate the defect state at the organic/inorganic interface. Thus, the fill factor of the devices has been increased from 53.3% to 63.5% and the power conversion efficiency of devices has been improved from 3.04% to 3.95%.
Varietal differences and seasonal effects on fatty acid composition and stability of oil from 82 peanut genotypes (1972)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTVarietal differences and seasonal effects on fatty acid composition and stability of oil from 82 peanut genotypesR. E. Worthington, Ray O. Hammons, and John R. AllisonCite this: J. Agric. Food Chem. 1972, 20, 3, 729–730Publication Date (Print):May 1, 1972Publication History Published online1 May 2002Published inissue 1 May 1972https://pubs.acs.org/doi/10.1021/jf60181a032https://doi.org/10.1021/jf60181a032research-articleACS PublicationsRequest reuse permissionsArticle Views285Altmetric-Citations75LEARN 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
Role of prophylactic surgical ligation of patent ductus arteriosus in extremely low birth weight infants: Systematic review and implications for clinical practice (2009)

Current evidence does not support the use of prophylactic surgical ligation of PDA in the management of the preterm infants.
Management of central giant granuloma of mandible with intralesional triamcinolone injections: a case report. (2013)

A 31-year-old female presented with a central giant cell granuloma of the mandible. The patient was successfully treated with intralesional triamcinolone for a period of six weeks. At a two-year follow-up, the patient showed no clinical or radiographic signs of the lesion.
Neighboring residue effects: evidence for intramolecular assistance to racemization or epimerization of dipeptide residues (1986)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNeighboring residue effects: evidence for intramolecular assistance to racemization or epimerization of dipeptide residuesGrant Gill. Smith, Robert C. Evans, and Rocky. BaumCite this: J. Am. Chem. Soc. 1986, 108, 23, 7327–7332Publication Date (Print):November 1, 1986Publication History Published online1 May 2002Published inissue 1 November 1986https://pubs.acs.org/doi/10.1021/ja00283a031https://doi.org/10.1021/ja00283a031research-articleACS PublicationsRequest reuse permissionsArticle Views610Altmetric-Citations16LEARN 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
Towards robust distributed systems (abstract) (2000)

Current distributed systems, even the ones that work, tend to be very fragile: they are hard to keep up, hard to manage, hard to grow, hard to evolve, and hard to program. In this talk, I look at several issues in an attempt to clean up the way we think about these systems. These issues include the fault model, high availability, graceful degradation, data consistency, evolution, composition, and autonomy.