gebhart/patrepeval huggingface dataset:
Relationship of soccer heading to computerized neurocognitive performance and symptoms among female and male youth soccer players (2011)

The current findings did not support a relationship between soccer heading and computerized neurocognitive performance and symptoms. The researchers suggest that any purported effects of soccer heading in youth are subtle and may affect only a small number of athletes. The reported sex differences in heading exposure warrant further attention.
Facile preparation of extra-large pore zeolite ITQ-37 based on supramolecular assemblies as structure-directing agents (2016)

The chiral germanosilicate zeolite ITQ-37 was prepared using a readily-obtained, semi-rigid achiral organic structure-directing agent (SDA) 1,1′,1′′-(2,4,6-trimethylbenzene-1,3,5-triyl)tris(methylene)tris-(3-methyl-1H-imidazol-3-ium) (denoted tmbi). The synthetic factors, including crystallization temperature, water content, germanium and tmbi concentrations for the crystallization of ITQ-37, were studied by means of single crystal X-ray diffraction, powder X-ray diffraction, thermogravimetric analysis, liquid and 13C/19F/29Si solid NMR and photoluminescence spectroscopy. The results showed that high Ge content, high tmbi concentration and low temperature (150 °C) conditions favor the formation of extra-large pore ITQ-37 when supramolecular interactions between tmbi molecules occur. On the other hand, a much diluted tmbi solution and a higher reaction temperature favor the crystallization of an unknown lamellar phase, wherein tmbi is present as monomers. These studies revealed that supramolecular assemblies of tmbi were formed during the zeolite synthesis and acted as SDAs for crystallization of ITQ-37, providing a general and applicable strategy for synthesizing large and extra-large pore zeolites.
THE ETHYLENE RESPONSE PATHWAY IN ARABIDOPSIS (1997)

▪ Abstract The simple gas ethylene influences a diverse array of plant growth and developmental processes including germination, senescence, cell elongation, and fruit ripening. This review focuses on recent molecular genetic studies, principally in Arabidopsis, in which components of the ethylene response pathway have been identified. The isolation and characterization of two of these genes has revealed that ethylene sensing involves a protein kinase cascade. One of these genes encodes a protein with similarity to the ubiquitous Raf family of Ser/Thr protein kinases. A second gene shows similarity to the prokaryotic two-component histidine kinases and most likely encodes an ethylene receptor. Additional elements involved in ethylene signaling have only been identified genetically. The characterization of these genes and mutants will be discussed.
Reinste Fettsäuren durch neuartige Fraktionierverfahren mit ACV‐Hochleistungskolonnen I (1971)

Abstract Nach einem Überblick über Art, Eigenschaften und Mengen der für Fettsäuren zur Verfügung stehenden Rohstoffquellen natürlichen und synthetischen Ursprungs werden eingehend die Bedingungen diskutiert, unter denen sich aus diesen Gemischen reine Fettsäureindividuen gewinnen lassen. Es wird gezeigt, wie die großtechnisch zur Verfügung stehenden Gemische der Fettsäuren, ihrer Ester sowie der Fettalkohole im wahrsten Sinne des Wortes in chemisch reine Komponeten mit Gehalten von über 99% an der jeweils gewünschten Verbindung zerlegt werden können. Als besonders wirksame Trenneinheiten niedrigen Druckverlustes haben sich hierfür die von der ACV entwickelten Regenschirmglocken‐ und vielflutige Siebbodenkonstruktionen bewährt. An den Beispielen der Cocos‐ und Baumwollsaatölfettsäure‐Aufarbeitung wird gezeigt, wie man durch sinnvolle Kombination verschiedener Kolonnen und Verdampferstufen zu praktisch beliebigen Reinheiten kommen kann, ohne daß sich dabei in geringer Menge enthaltene Neben‐ und Rückstandskomponenten anreichern können. Die gezeigten ACV‐Schaltungen zeichnen sich darüber hinaus gegenüber mit Treibdampf betriebenen Anlagen durch besonders niedrigen Betriebsmittelverbrauch von DM 12.50/t Geradeausdestillat, DM 35.29/t fraktionierte Fettsäureindividuen der Cocosrohsäure mit Reinheiten bis über 99.9% und DM 30.96/t einer 99%igen C 18 ‐Fraktion der Baumwollsaatölfettsäuren aus.
Ammonium transport in Escherichia coli: localization and nucleotide sequence of the amtA gene (1991)

Escherichia coli expresses a concentrative ammonium (methylammonium) transport system which is strongly repressed under conditions of nitrogen excess. We have previously reported the cloning of a structural gene (amtA) for this transporter by complementation. In this study, a 3.4 kb HindIII-BamHI fragment containing amtA was cloned into the pBluescript KS(+) vector, and unidirectional nested deletions from each end of this 3.4 kb fragment were generated by exonuclease III digestion. The deletions were analysed by complementation of the structural gene mutation produced by Tn10 insertion. This allowed amtA to be localized within a 1.4 kb region which spans the site of the mutation. By application of the Sanger dideoxy method, we sequenced the region containing amtA. The gene contains an open reading frame which encodes a protein with a predicted molecular mass of 27 kDa. The open reading frame is preceded by a putative Shine-Dalgarno sequence and followed by an inverted repeat which might function as a simple transcription terminator. Hydropathic analysis of the inferred amino acid sequence of the gene product predicts that amtA encodes a cytoplasmic component of the ammonium transport system.
High Rate Electron Capture Dissociation Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (2004)

Advances in science and technology during the past decade have greatly enhanced the level of the structural investigation of macromolecules – peptides and proteins. Biological mass spectrometry has become one of the most precise and sensitive techniques in peptide and protein analysis. However, increasing demands of biotechnological applications require further progress to be made. In the present thesis the development and improvement of peptide and protein characterization methods and techniques based on ion-electron and ion-photon reactions in electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry are described. The focus is on the development of the electron capture dissociation method, recently discovered by the group of professor McLafferty, into a high rate, efficient tandem mass spectrometrical technique. The rate and reliability of the electron capture dissociation technique were greatly increased by implementation of low-energy pencil electron beam injection systems based on indirectly heated dispenser cathodes. Further implementation of a hollow electron beam injection system combined, in a single experimental configuration, two rapid fragmentation techniques, high rate electron capture dissociation and infrared multiphoton dissociation. Simultaneous and consecutive irradiations of trapped ions with electrons and photons extended the possibilities for ion activation/dissociation reaction schemes and lead to improved peptide and protein characterization. Using these improvements, high rate electron capture dissociation was employed in time-limited experiments, such as liquid chromatography–tandem mass spectrometry and capillary electrophoresis-tandem mass spectrometry. The analytical applications of the developed techniques have been demonstrated in top-down sequencing of peptides and proteins up to 29 kDa, improved sequencing of peptides with multiple disulfide bridges and secondary fragmentation (w-ion formation), as well as extended characterization of peptide mixtures separated by liquid chromatography and capillary electrophoresis. For instance, the dissociation of peptides resulting from enzymatic digestion of proteins provided complementary structural information on peptides and proteins, as well as their post-translational modifications.
Unexpected Transaminations of Some Aminopyrimidin-4( <i>3H</i> )-ones (1985)

Transamination reactions of 6-amino-2-methylthiopyrimidin-4-(3H)-one and some 2,6-diaminopyrimidin-4(3H)-ones with secondary amines are reported. The syntheses of various 6-amino-2-disubstituted aminopyrimidin-4(3H)-ones are described.
Multiple Regions on the <i>Escherichia coli</i> Heat Shock Transcription Factor ς <sup>32</sup> Determine Core RNA Polymerase Binding Specificity (1998)

We have analyzed the core RNA polymerase (RNAP) binding activity of the purified products of nine defective alleles of the rpoH gene, which encodes sigma32 in Escherichia coli. All mutations studied here lie outside of the putative core RNAP binding regions 2.1 and 2.2. Based on the estimated K(s)s for the mutant sigma and core RNAP interaction determined by in vitro transcription and by glycerol gradient sedimentation, we have divided the mutants into three classes. The class III mutants showed greatly decreased affinity for core RNAP, whereas the class II mutants' effect on core RNAP interaction was only clearly seen in the presence of sigma70 competitor. The class I mutant behaved nearly identically to the wild type in core RNAP binding. Two point mutations in class III altered residues that were distant from one another. One was found in conserved region 4.2, and the other was in a region conserved only among heat shock sigma factors. These data suggest that there is more than one core RNAP binding region in sigma32 and that differences in contact sites probably exist among sigma factors.
Treatment of premenstrual syndrome by spironolactone: A double‐blind, placebo‐controlled study (1995)

Spironolactone appears to be an effective therapy for the negative mood changes and somatic symptoms in PMS.
Electronic Structure Of Metallic Glasses (2018)

This chapter describes the theoretical and experimental work on the electronic structure of metallic glasses. The problem of determining the electronic structure of metallic glasses can be compared with the corresponding problem in crystalline metals, crystalline alloys, and intermetallic compounds. The chapter examines the microscopic origin of superconductivity and attempts to relate the electronic structure of metallic glasses. The importance of electronic structure in determining the systematics of superconductivity is stressed. The formation of localized moments and spin fluctuations are particularly important in understanding superconductivity in alloys. The chapter reviews the problem of electronic transport. J. P. Gaspard has theoretically examined the effects of chemical short range order on the electronic structure of metallic glasses using a tight binding description on the d bands. Since a large number of glass forming alloys contain transition and rare-earth metals as principle constituents, it is appropriate to discuss electronic structure models based on the atomic orbitals approach.
Novel Photoactive Nonlinear Optical Polymers for Use in Optical Waveguides (1994)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNovel Photoactive Nonlinear Optical Polymers for Use in Optical WaveguidesIain A. McCullochCite this: Macromolecules 1994, 27, 7, 1697–1702Publication Date (Print):March 1, 1994Publication History Published online1 May 2002Published inissue 1 March 1994https://pubs.acs.org/doi/10.1021/ma00085a006https://doi.org/10.1021/ma00085a006research-articleACS PublicationsRequest reuse permissionsArticle Views156Altmetric-Citations17LEARN 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
Metamaterial inspired patch antenna miniaturization technique (2010)

A new methodology is introduced to design miniaturized patch antennas based on an in situ GA optimization of a single horizontal complementary resonant structure. Simulation results show that the resonant frequency can be shifted from 5 GHz to 500 MHz providing a size reduction of 90%. At each frequency, the target reflection coefficient, which was set to -15 dB, was obtained within 10 iterations of the GA. These results are not necessarily optimal, and a reduction greater than 90% might be achieved by optimizing on efficiency as well as reflection coefficient. Further analysis using a multi-objective fitness function should provide significant improvement.
Space efficient conservative garbage collection (1993)

We call a garbage collector conservative if it has only partial information about the location of pointers, and is thus forced to treat arbitrary bit patterns as though they might be pointers, in at least some cases. We show that some very inexpensive, but previously unused techniques can have dramatic impact on the effectiveness of conservative garbage collectors in reclaiming memory. Our most significant observation is that static data that appears to point to the heap should not result in misidentified references to the heap. The garbage collector has enough information to allocate around such references. We also observe that programming style has a significant impact on the amount of spuriously retained storage, typically even if the collector is not terribly conservative. Some fairly common C and C++ programming style significantly decrease the effectiveness of any garbage collector. These observations suffice to explain some of the different assessments of conservative collection that have appeared in the literature.
Demosaicing Method for Digital Cameras with White-RGB Color Filter Array (2015)

Demosaicing, or color filter array (CFA) interpolation, estimates missing color channels of raw mosaiced images from a CFA to reproduce full-color images. It is an essential process for single-sensor digital cameras with CFAs. In this paper, a new demosaicing method for digital cameras with Bayer-like W-RGB CFAs is proposed. To preserve the edge structure when reproducing full-color images, we propose an edge direction–adaptive method using color difference estimation between different channels, which can be applied to practical digital camera use. To evaluate the performance of the proposed method in terms of CPSNR, FSIM, and S-CIELAB color distance measures, we perform simulations on sets of mosaiced images captured by an actual prototype digital camera with a Bayer-like W-RGB CFA. The simulation results show that the proposed method demosaics better than a conventional one by approximately +22.4% CPSNR, +0.9% FSIM, and +36.7% S-CIELAB distance.
Effects of powdered Montmorency tart cherry supplementation on an acute bout of intense lower body strength exercise in resistance trained males (2015)

Short-term supplementation of Montmorency powdered tart cherries surrounding a single bout of resistance exercise, appears to be an effective dietary supplement to attenuate muscle soreness, strength decrement during recovery, and markers of muscle catabolism in resistance trained individuals.
The Diet of Worms: A Study of Polychaete Feeding Guilds (1979)

Current information on the eating habits of polychaetes are reviewed. The polychaete families are arranged in alphabetical order and the feeding habits of each are summarized. Feeding guilds are defined based on a joint consideration of food, eating habits, and locomotory patterns. An understanding of the sympatric occurrance in the deep sea of several congeners with extremely limited morphological differentiation was of particular interest. This review contains 355 references, 23 figures, and 33 tables.
Newspaper archives + text mining = rich sources of historical geo-spatial data (2016)

Newspaper archives are rich sources of cultural, social, and historical information. These archives, even when digitized, are typically unstructured and organized by date rather than by subject or location, and require substantial manual effort to analyze. The effort of journalists to be accurate and precise means that there is often rich geo-spatial data embedded in the text, alongside text describing events that editors considered to be of sufficient importance to the region or the world to merit column inches. A regional newspaper can add over 100,000 articles to its database each year, and extracting information from this data for even a single country would pose a substantial Big Data challenge. In this paper, we describe a pilot study on the construction of a database of historical flood events (location(s), date, cause, magnitude) to be used in flood assessment projects, for example to calibrate models, estimate frequency, establish high water marks, or plan for future events in contexts ranging from urban planning to climate change adaptation. We then present a vision for extracting and using the rich geospatial data available in unstructured text archives, and suggest future avenues of research.
3D Macroporous Solids from Chemically Cross-linked Carbon Nanotubes (2014)

Suzuki reaction for covalently interconnected 3D carbon nanotube (CNT) architectures is reported. The synthesis of 3D macroscopic solids made of CNTs covalently connected via Suzuki cross-coupling, a well-known carbon-carbon covalent bond forming reaction in organic chemistry, is scalable. The resulting solid has a highly porous, interconnected structure of chemically cross-linked CNTs. Its use for the removal of oil from contaminated water is demonstrated.
Fast Generation of Micro-Channels on Cylindrical Surfaces by Elliptical Vibration Texturing (2014)

Micro-structured surfaces are assuming an ever-increasing role since they define the ultimate performance of many industrial components and products. Micro-channels, in particular, have many potential applications in micro-fluidic devices, micro heat exchangers, and friction control. This paper proposes an innovative vibration-assisted machining method to generate micro-channels on the external surface of a cylinder. This method, referred to as elliptical vibration texturing, was originally developed by the authors to generate dimple patterns. It uses the modulation of the depth-of-cut by tool vibrations to create surface textures. The most promising features of the proposed method are its high efficiency, low cost, and scalability for mass production. It is shown that with proper combinations of the process parameters the created dimples start to overlap and form channels. An analytical model is established to predict channel formation with respect to the overlapping ratios of the dimples. Channel formation criteria and expressions for channel geometries are given along with a channel generation map that relates channel geometry to the process parameters. Experimental results are given to verify the model. A further example of micro-pattern generation is also given to showcase the flexibility of the process.
Different Concentrations of TSP, PM10, PM2.5, and PM1 of Several Urban Forest Types in Different Seasons (2015)

In this study, six types of urban green land in Beijing Olympic Park, including grassland, shrub, conifer, broadleaf tree, mixed trees, and a control, were selected to study the relationship between urban green land and particulate matter (PM). For all particles -coniferous tree forest type, broadleaf tree forest type, and broadleaf and coniferous mixed trees type -the common point was that they have big leaf areas that can absorb a large number of particles. So the concentrations in the three forest types were very low. Leaf area is a big factor for absorbing and reducing concentrations of four types of particles.
NEW MEASUREMENTS OF INTENSITY-DEPENDENT CHANGES IN THE REFRACTIVE INDEX OF LIQUIDS (1966)

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation P. D. McWane, D. A. Sealer; NEW MEASUREMENTS OF INTENSITY‐DEPENDENT CHANGES IN THE REFRACTIVE INDEX OF LIQUIDS. Appl. Phys. Lett. 1 June 1966; 8 (11): 278–279. https://doi.org/10.1063/1.1754437 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAIP Publishing PortfolioApplied Physics Letters Search Advanced Search |Citation Search
High quality coding of telephone speech and wideband audio (1990)

Advances in signal processing which have created several new technologies for high-quality digital audio are discussed. For traditional telephony, characterized by a signal bandwidth of about 3.2 kHz, the transmission rate for network quality speech is now down to 16 kb/s, with the prospect of a new standard from the CCITT. Robust communications quality appropriate for cellular radio has been realized at 8 kb/s. The current focus is on 4 kb/s, with the aim of improving naturalness and speaker identification. In the coding of wideband audio, an important point of reference is the CCITT standard for 7 kHz speech at a rate of 64 kb/s. Results of recent research are pointing to better capabilities-higher signal bandwidth at 64 kb/s, and 7 kHz bandwidth at lower bit rates such as 32 kb/s. The coding of audio with a signal bandwidth of 20 kHz is receiving significant attention due to recent activity in the ISO (International Standards Organization), with a goal of storing a CD-grade monophonic audio channel at a bit rate not exceeding 128 kb/s. Prospects for accomplishing this are found to be very good. As a side result, emerging algorithms will offer very attractive options at lower rates such as 96 and 64 kb/s.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Evolutionary Robotics: What, Why, and Where to (2015)

Evolutionary robotics applies the selection, variation, and heredity principles of natural evolution to the design of robots with embodied intelligence. It can be considered as a subfield of robotics that aims to create more robust and adaptive robots. A pivotal feature of the evolutionary approach is that it considers the whole robot at once, and enables the exploitation of robot features in a holistic manner. Evolutionary robotics can also be seen as an innovative approach to the study of evolution based on a new kind of experimentalism. The use of robots as a substrate can help address questions that are difficult, if not impossible, to investigate through computer simulations or biological studies. In this paper we consider the main achievements of evolutionary robotics, focusing particularly on its contributions to both engineering and biology. We briefly elaborate on methodological issues, review some of the most interesting findings, and discuss important open issues and promising avenues for future work.
Phytochemical Research Using Accelerator Mass Spectrometry (2004)

Vegetables and fruits provide an array of microchemicals in the form of vitamins and secondary metabolites (phytochemicals) that may lower the risk of chronic disease. Tracing these phytochemicals at physiologic concentrations has been hindered by a lack of quantitative sensitivity for chemically equivalent tracers that could be used safely in healthy people. Accelerator mass spectrometry is a relatively new technique that provides the necessary sensitivity (in attomoles) and measurement precision (<3%) towards 14Clabeled phytochemicals for detailed kinetic studies in humans at dietary levels.