gebhart/patrepeval huggingface dataset:
Novel thiophene-aryl co-oligomers for organic thin film transistors (2005)

A series of thiophene-aryl co-oligomers with phenyl-based central units, i.e. phenyl, biphenyl, fluorene and phenanthrene, were synthesized, and their optical properties and charge carrier transporting properties were characterized. The co-oligomers with biphenyl and phenanthrene units exhibited significantly improved thermal stability. Absorption measurements and electrochemical characterization revealed that all co-oligomers have broader band gap and lower HOMO levels than the corresponding thiophene oligomer, α,ω-dihexylsexithiophene (DHα6T). Introduction of biphenyl and phenanthrene units afforded co-oligomers with the broadest band gap and lowest HOMO levels in comparison with the counterparts of phenyl and fluorene central units. Depending on the structure of the central units, the field-effect mobility (μTFT) of the co-oligomers from top-contact thin film transistors is in the range of (1–6.7) × 10−2 cm2 V−1 s−1. The rigid and planar central unit is favorable for good device performance. Among the co-oligomers, 2,7-bis(5′-hexyl-2,2′-bithien-5-yl)phenanthrene (DH-TTPhTT) exhibits the highest μTFT of 6.7 × 10−2 cm2 V−1 s−1, comparable to that of DHα6T in the same device configuration and fabrication conditions.
Natural Zeolites in Energy Applications (2006)

Natural zeolites have been used in a wide variety of applications over the world. Among these, its utilization for carrying energy in energy conversation and heat exchanging systems is noteworthy. The main objective of the present study is to investigate potential and utilization opportunities of natural zeolites in energy-related applications. In this regard, the reserve potential of natural zeolites in Turkey is presented, while their worldwide application areas, current, and other utilization opportunities are given. High water adsorption capability and energy storage properties of natural zeolites are studied. The results of experimental studies conducted to determine the physical and chemical properties as well as the thermal conductivity values of the Gördes zeolite (Clinoptilolite type) with highly qualified, about one billion ton of mine deposit as energy storage material, are also presented. Keywords: energyutilization of zeoliteszeoliteClinoptiloliteGördesTurkeythermal conductivity Acknowledgment The authors wish to thank Mr. Aziz Kirveli, Agricultural Engineer, M.Sc., Member on Management Board of Enli Mining Corporation, Izmir, Turkey, for his support with this study. Additional informationNotes on contributorsSerpil Ozaydin Dr. Serpil Ozaydin is currently working for Enli Mining Corporation as Manager of R&D Department, 2131 Sk., No. 31/2, 35010, Bayrakli/Izmir, Turkey
Pre-TCR signaling inactivates Notch1 transcription by antagonizing E2A (2009)

Precise control of the timing and magnitude of Notch signaling is essential for the normal development of many tissues, but the feedback loops that regulate Notch are poorly understood. Developing T cells provide an excellent context to address this issue. Notch1 signals initiate T-cell development and increase in intensity during maturation of early T-cell progenitors (ETP) to the DN3 stage. As DN3 cells undergo beta-selection, during which cells expressing functionally rearranged TCRbeta proliferate and differentiate into CD4(+)CD8(+) progeny, Notch1 signaling is abruptly down-regulated. In this report, we investigate the mechanisms that control Notch1 expression during thymopoiesis. We show that Notch1 and E2A directly regulate Notch1 transcription in pre-beta-selected thymocytes. Following successful beta-selection, pre-TCR signaling rapidly inhibits Notch1 transcription via signals that up-regulate Id3, an E2A inhibitor. Consistent with a regulatory role for Id3 in Notch1 down-regulation, post-beta-selected Id3-deficient thymocytes maintain Notch1 transcription, whereas enforced Id3 expression decreases Notch1 expression and abrogates Notch1-dependent T-cell survival. These data provide new insights into Notch1 regulation in T-cell progenitors and reveal a direct link between pre-TCR signaling and Notch1 expression during thymocyte development. Our findings also suggest new strategies for inhibiting Notch1 signaling in pathologic conditions.
5120 km RZ-DPSK transmission over G652 fiber at 10 Gb/s with no optical dispersion compensation (2005)

We report the longest unregenerated reach achieved for a 10 Gb/s return-to-zero differential phase shift keying (RZ-DPSK) system on standard dispersion fiber (G652) with no optical dispersion compensation.
Subthalamic Nucleus Location: Relationships between Stereotactic AC-PC-Based Diagrams and MRI Anatomy-Based Contours (2009)

Subthalamic nucleus (STN) targeting is classically performed based on AC-PC probabilistic position. Nevertheless, MRI allows direct visualization and targeting. We aimed to compare the position localized on MR images with standard stereotactic diagrams. The STN was manually contoured on MR images (22 Parkinson's disease patients); boundaries were simplified in a schematic polygonal form. Front and lateral stereotactic diagrams were constructed according to Talairach and Benabid. We compared x, y and z coordinates of the geometrical center of MRI-based polygons and stereotactic diagrams (Wilcoxon matched-pairs tests). There was significant discordance between MRI-based polygons and AC-PC-based images. MRI shows the STN as more posterior, medial and slightly inferior.
Validating and refining clusters via visual rendering (2004)

The automatic clustering algorithms are known to work well in dealing with clusters of regular shapes, e.g. compact spherical/elongated shapes, but may incur higher error rates when dealing with arbitrarily shaped clusters. Although some efforts have been devoted to addressing the problem of skewed datasets, the problem of handling clusters with irregular shapes is still in its infancy, especially in terms of dimensionality of the datasets and the precision of the clustering results considered. Not surprisingly, the statistical indices works ineffective in validating clusters of irregular shapes, too. We address the problem of clustering and validating arbitrarily shaped clusters with a visual framework (VISTA). The main idea of the VISTA approach is to capitalize on the power of visualization and interactive feedbacks to encourage domain experts to participate in the clustering revision and clustering validation process.
Shear-Wave Polarizations and Subsurface Stress Directions at Lost Hills Field (1991)

This DOI is not currently attached to any metadata records. DOIs can’t actually ever be deleted (they’re persistent), but sometimes our members create DOIs in error. We do have a process to approximate deletion which we follow only in rare cases where the DOI has been genuinely created in error, and most crucially, if the DOI has never been published anywhere online or in print and never otherwise distributed to or communicated with anyone (authors, readers, reviewers, etc.
MIKROBIOLOGISCHE UND CHEMISCHE SYNTHESEN AUF DEM GEBIET DER CARDENOLIDE UND BUFADIENOLIDE (1973)

Die vorliegenden Ergebnisse zeigen, daß man auch Δ4–Bufatrienolide mit geeigneten Mikroorganismen in verschiedenen Positionen hydroxylieren, hydrieren, dehydrieren, ferner im Ring A aromatisieren und in Ring B zu 9,10–Seco–Phenolen abbauen kann.
Antifungal potential of <i>Spilanthes calva</i> after inoculation of <i>Piriformospora indica</i> (2004)

We investigated the influence of Piriformospora indica on the antifungal principle of Spilanthes calva, a plant of high commercial value. An antifungal efficacy was shown by aqueous and petroleum ether extracts of S. calva against Fusarium oxysporum and Trichophyton mentagrophytes. The petroleum ether extract of S. calva was more effective than the aqueous extract in inoculated as well as uninoculated plants. The antifungal activity of the plant was enhanced due to the increase in spilanthol content after inoculation of P. indica.
GraspZoom: Zooming and scrolling control model for single-handed mobile interaction (2009)

A pressure sensing based single-handed interaction model is presented in this paper. Unlike traditional desktop GUI model, mobile UI model has not been established yet. For example, Apple iPhone proposed Pinch operation, which use two fingers to zoom-in and zoom-out objects. However, in a today's hand-held situation, manipulation methods using two fingers are not always good solution because they require two hands in order to hold the device itself in most cases. We propose a single-handed UI scheme GraspZoom: multi-state input model using pressure sensing. Force Sensitive Resistor (FSR) attached on backside of a mobile phone was employed in order to evaluate effectiveness of pressure based control model. We also describe example applications which enable intuitive and continuous zooming and scrolling. By using tiny thumb gesture input along with this pressure sensing method, bi-directional operations (e.g., zoom-in and -out) are also achieved.
Profit Maximization for Online Advertising Demand-Side Platforms (2017)

We develop an optimization model and corresponding algorithm for the management of a demand-side platform (DSP), whereby the DSP aims to maximize its own profit while acquiring valuable impressions for its advertiser clients. We formulate the problem of profit maximization for a DSP interacting with ad exchanges in a real-time bidding environment in a cost-per-click/cost-per-action pricing model. Our proposed formulation leads to a nonconvex optimization problem due to the joint optimization over both impression allocation and bid price decisions. We use Lagrangian relaxation to develop a tractable convex dual problem, which, due to the properties of second-price auctions, may be solved efficiently with subgradient methods. We propose a two-phase solution procedure, whereby in the first phase we solve the convex dual problem using a subgradient algorithm, and in the second phase we use the previously computed dual solution to set bid prices and then solve a linear optimization problem to obtain the allocation probability variables. On several synthetic examples, we demonstrate that our proposed solution approach leads to superior performance over a baseline method that is used in practice.
Relationship between oxygen consumption, growth and survival of larval fish (2011)

This work aimed to evaluate the relationship between morphological development, oxygen consumption and reduced mortality in larval fish. We measured the resting metabolic rate (RM), specific metabolic rate (SMR) and the change in the total length during the larval stage of four fish species. Resting metabolism decreased from hatching to mouth opening, and then increased after mouth opening. The changes in the SMR were variable during the larval stage. After hatching, there was no increase in SMR in yolk-sac larvae. However, SMR increased between mouth opening and the onset of notochord flexion and then decreased during notochord flexion before finally stabilizing. We observed two peaks in mortality during the larval period of all species: between mouth opening to the onset of notochord flexion and from the completion of notochord flexion to the juvenile stage based on the per cent mortality and the number of dead fish collected from the bottom of the rearing tank. Interestingly, the changes in SMR coincided with these periods of mortality. We hypothesize that larvae require more energy during these periods of larval development and are thus more susceptible to mortality when energy is insufficient. Thus, it is important to supply enough nutrition to larvae in during early development to prevent mass larval mortality.
Thesis Proposal: The Expected-Outcome Model of Two-Player Games (1986)

This paper introduces a new, crisp definition of two-player evaluation functions. These functions calculate a node's expected-outcome value, or the probability that a randomly chosen leaf beneath it will represent a win. The utility of these values to game programs will be assessed by a series of experiments that compare the performance of expected-outcome functions with that of some popular, previously studied evaluators. To help demonstrate the domain-independence of these new functions, the experiments will be run on variants of several games, including tic-tac-toe, Othello, and chess. In addition, the paper outlines a. new probabilistic model of game-trees which involves rethinking many long-accepted assumptions in light of the newly defined expected-outcome functions.
A hierarchical agent assisted MIPv6 handover scheme with QoS support (2006)

This paper proposes a hierarchical mobility management architecture providing adaptive QoS control to improve the performance during mobile handovers, especially break-before-make handovers. In the proposed scheme, the information for QoS configuration and location management is carried by the same set of messages. The interactions between the QoS Agents (QA) enable smooth handover, with better performance in terms of IP layer handover latency and QoS configuration latency when the MN is away from the home network.
Spectroscopic Characterization of Some Tetradentate Schiff Bases and Their Complexes with Nickel, Copper and Zinc (2001)

Abstract Three ligands have been formed by the 1:2 molar condensation of o‐phenylenediamine with salicyldhyde, 2‐hydroxy‐1‐naphthaldhyde or o‐hydroxyacetophenone. The potentially tetradentate ligands are N,N′‐bis(salicyldhyde)‐o‐phenylenediamine(SalophH 2 ), N,N′‐bis(2‐hydroxy‐1‐naphthaldhyde)‐o‐phenylenediamine (NophH 2 ) and N,N′‐bis(o‐hydroxyacetophenone)‐o‐phenylenediamine (AophH 2 ), respectively. These ligands form complexes (1:1 molar ratio) with nickel, copper and zinc ions. The complexes have been characterized by IR, 1 HNMR, MS, uv/vis spectra in addition to elemental analysis. The spectral data of the ligands and their complexes with nickel, copper and zinc are discussed in connection with the structural changes which occur due to complexation.
Analytical Solution for Lateral‐Torsional Buckling of Concrete‐Filled Tubular Flange Girders with Torsional Bracing (2020)

Concrete‐filled tubular flange girders have been used in bridges, and torsional bracings are widely used in them to increase the lateral‐torsional buckling strength. This article proposes an analytical solution for the lateral‐torsional buckling (LTB) of concrete‐filled tubular flange steel girders with torsional bracing under a concentrated load. The modal trial functions of lateral displacement and the torsional angle are expressed by the first six terms of the trigonometric function. By introducing dimensionless parameters, the variational solution of energy for the buckling equation of the LTB of the girders is obtained, and the formula for the dimensionless critical moment of its LTB is derived using 1stOpt based on 32,550 data sets. Compared with the finite element method, the proposed critical formula is highly accurate and can be applied to engineering design. Finally, parametric studies were conducted on the effects of the stiffness of torsional bracing, the span of the girder, and the flange steel ratio.
Face recognition based on discriminative manifold learning (2004)

In this paper, a discriminative manifold learning method for face recognition is proposed which achieved the discriminative embedding the high dimensional face data into a low dimensional hidden manifold. Unlike the recently proposed LLE, Isomap and Eigenmap algorithms, which are based on reconstruction purpose, our method uses the RCA algorithm to achieve nonlinear embedding and data discrimination at the same time. Also, the LLE and Isomap algorithms are crucially depends on the appropriateness of the neighborhood construction rule, in this paper, a CK-nearest neighborhood rule is proposed to achieve better neighborhood construction. Experimental results indicate the promising performance of the proposed method.
On the Effect of Removal of the Pronephros of the Amphibian Embryo (1916)

Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans the biological, physical, and social sciences.
Ferrate Oxidimetry (1950)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFerrate OxidimetryJ. M. Schreyer, G. W. Thompson, and L. T. OckermanCite this: Anal. Chem. 1950, 22, 5, 691–692Publication Date (Print):May 1, 1950Publication History Published online1 May 2002Published inissue 1 May 1950https://pubs.acs.org/doi/10.1021/ac60041a022https://doi.org/10.1021/ac60041a022research-articleACS PublicationsRequest reuse permissionsArticle Views253Altmetric-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
Reductive detoxification as a mechanism of fungal resistance to singlet oxygen-generating photosensitizers. (1992)

Fungi that are resistant or sensitive to the singlet oxygen-generating toxin cercosporin were assayed for their ability to detoxify it by reduction. Cercosporin reduction was assayed microscopically by using bandpass filters to differentiate between fluorescence emission from cercosporin and reduced cercosporin. Hyphae of the resistant Cercospora and Alternaria species emitted a green fluorescence, indicative of reduced cercosporin. Hyphae of nonviable cultures and of cercosporin-sensitive fungi did not reduce cercosporin. Sensitive fungi occasionally reduced cercosporin when incubated with reducing agents that protect against cercosporin toxicity. Cercosporin could not be efficiently photoreduced in the absence of the fungus. Cercospora species were also resistant to eosin Y but were sensitive to rose bengal. Microscopic observation demonstrated that Cercospora species were not capable of reducing rose bengal but were capable of reducing eosin Y. These observations were supported by in vitro electrochemical measurements that revealed the following order with respect to ease of reduction: cercosporin >> eosin Y > rose bengal. The formal redox potential (E 0') of cercosporin at pH 7.5 was found to be -0.14 V vs. the normal hydrogen electrode. We conclude that Cercospora species protect themselves against cercosporin by the reduction and detoxification of the toxin molecule.
Mycorrhizal Response of Two Tomato Genotypes Relates to their Ability to Acquire and Utilize Phosphorus (1998)

The purpose of this study was to determine how a plant's response to colonization by mycorrhizal fungi relates to its ability to acquire and utilize phosphorus for growth and reproduction. Two tomato genotypes previously found to be either responsive (' LA1709 ') or unresponsive (' large cherry ') to mycorrhizal colonization during early vegetative growth were examined in detail. Plants were grown at four levels of added phosphate or with mycorrhizal inoculum. Vegetative and reproductive growth, phosphorus uptake and root length density were measured during the course of plant development. Mycorrhizal symbiosis significantly increased above-ground dry mass, root length, phosphorus content and yield under low phosphorus conditions in ' LA1709 ', while it had less effect on these characteristics in ' large cherry '. When uninfected, however, ' LA1709 ' grew and reproduced poorly unless high amounts of phosphorus were added to the soil, while ' large cherry ' grew well under very low phosphorus conditions. This was because ' large cherry ' had significantly higher root length densities than ' LA1709 ', enabling plants from this genotype to explore more soil volume and acquire greater amounts of phosphorus when grown without mycorrhizal fungi in low phosphorus soil. ' Large cherry ' also had higher phosphorus use efficiency and allocated a greater proportion of phosphorus to reproduction when uninfected than ' LA1709 '. It appears traits that affect a plant's ability to acquire and utilize phosphorus efficiently for growth and reproduction can also affect its response to mycorrhizal colonization in tomato.
Luminescent nitro derivatives of benzotriazolo[2,1<i>a</i>]benzotriazole (1993)

Abstract Fluorescence was enhanced and laser activity introduced by substitution in 5,11‐dehydro‐5H,11H‐benzotriazolo[2,1‐a]benzotriazole 6 to give 2‐nitro, 2,8‐dinitro, 2,4,8‐trinitro, and 2,4,8,10‐tetranitro derivatives 9a–d . Luminescence for compounds 6 and 9a–d and the 2,8‐dinitro‐3,9‐dimethyl and 2,3,8,9‐tetramethyl‐4,10‐dinitro derivatives 11a,b was erratically solvent dependent when examined in ethyl acetate, acetonitrile, and acetone and was most efficient in the 2,8‐dinitro derivative 9b [λ f 479 nm (ethyl acetate) Φ 0.98, λ f 501 nm (acetonitrile) Φ 0.58, and λ f 494 nm (acetone) Φ 0.61] and in the tetranitro derivative 9d [λ f 509 nm (acetonitrile) Φ 0.81 and λ f 511 nm (acetone) Φ 0.66]. With laser activity at 560–590 nm (acetonitrile) the dye 9b was 30% as efficient as rhodamine 6G (ethanol) in power output. Luminescence was quenched by the reduction of nitro groups to give 2‐amino and 2,8‐diamino derivatives 9e,f and by the conversion of the tetranitro compound 9d to an unassigned diazido dinitro derivative 9g . Luminescence was not detected in 2,5‐dimethyl‐3,6‐dinitro‐1,3a‐4,6a‐tetraazapentalene 14 and ethyl 2,5‐dimethyl‐1,3a,4,6a‐tetraazapentalene‐3,6‐dicarboxylate 15 . Azidoazobenzenes were obtained from 4‐methyl‐ and 4,5‐dimethyl‐1,2‐phenylene diamines via oxidation with lead dioxide to aminoazobenzene derivatives followed by treatment of the diazotized amines with sodium azide and thermolysis of azido intermediates to give 3,9‐dimethyl and 2,3,8,9‐tetramethyl derivatives 10a,b of the triazolotriazole 6 . Nitration converted the triazole 6 to the 2,4,8‐trinitro derivative 9c and the alkyltriazoles to their dinitro derivatives 11a,b .
Augmented reeb graphs for content-based retrieval of 3D mesh models (2004)

This work presents an improved method of 3D mesh models indexing for content-based retrieval in database with shape similarity and appearance queries. The approach is based on the multiresolutional Reeb graph matching presented by Hilaga et al. (2001). The original method only takes into account topological information what is often not sufficient for effective matchings. Therefore we proposed to augment this graph with geometrical attributes. We also provide a new topological coherence condition to improve the graph matching. Moreover 2D appearance attributes and 3D features are extracted and merged to improve the estimation of the similarity between models. Besides, all these new attributes are user-dependent as they can be weighted by variable terms. We obtain a flexible multiresolutional and multicriteria representation called augmented Reeb graph (ARG). Good preliminary results have been obtained in a shape-based matching framework compared to existing methods based only on statistical measures. In addition, our study lead us to an innovative part matching scheme based on the same approach as our augmented Reeb graph matching.