gebhart/patrepeval huggingface dataset:
Constant-pressure aortic root perfusion versus cardioplegia and hypothermia. Comparison of methods of myocardial protection. (1979)

Both coronary perfusion and hypothermic cardioplegia are widely used methods of myocardial protection during aortic valve replacement. A theoretical objection to coronary perfusion is that it is not synchronized with cardiac contractions. Accordingly, a special pump was designed to provide perfusion at a constant range of pressure. Twenty dogs were studied during 4 hours of bypass. In six dogs no manipulations were carried out and hearts were allowed to beat in a nonworking state. Seven dogs underwent 2 hours of aortic cross-clamping and constant-pressure aortic root perfusion. Seven dogs underwent 2 hours of uninterrupted aortic occlusion with myocardial protection being maintained by cold potassium-induced arrest, Contractility did not change significantly in any of the three groups. All animals demonstrated significant hyperemia after bypass but normal endocardial/epicardial flow ratios. Although compliance deteriorated in all groups, the most striking changes were seen following 4 hours of bypass alone or constant-pressure aortic root perfusion. Hypothermic potassium arrest, in contrast, provided a slightly greater degree of myocardial protection, perhaps both by limiting the degree of ischemic injury directly and by excluding the heart from the circulating blood and the pump oxygenator system.
Influence of creativity and knowledge sharing on performance (2012)

Purpose The purpose of this paper is to investigate the influence of technological creativity for sports and knowledge sharing on individual performance, and to analyze the correlation among creativity for sports technologies, knowledge sharing, and individual performance, via the mediating effect of athletes' self‐efficacy. Design/methodology/approach This study selected 250 current athletes, including tennis players, track and field athletes, volleyball players, etc. as the subjects. Statistical methods, such as Cronbach's α, factor analysis, Pearson's correlation, regression analysis, and path analysis, were used to perform analyses. Findings It was found that among the technological creativity for sports, athletes' creativity and analytic capacity had significant positive influence on task performance and team performance in athletes' individual performance. In other words, the improvement in athletes' self‐efficacy may improve their creativity and level of technological capacity, which further improves team performance and task performance. Originality/value For coaches it is necessary to constantly strengthen athletes' self‐efficacy and provide them with the space for the development of creativity and technological capacity in order to specifically improve their athletic performance. This study integrated relevant theories of technological creativity with those of self‐efficacy to investigate issues regarding improvements in athletes' performance. At present, there is a lack of relevant studies on technological creativity for sports. The research results can serve as a reference to future studies for continuous clarification of investigations into technological creativity for sports.
Synthesis and Spectroscopic Studies of Novel β-Diketonate Copper(I) Compounds and Solid State Structure of Tetravinylsilane Tetrakis Copper(I) 1,1,1,5,5,5-Hexafluoroacetylacetonate (TVST[Cu]hfac) (2001)

Reactions between tetraalkene silanes SiR4 (R = vinyl and allyl), copper(I) oxide, and 1,1,1,5,5,5-hexafluoroacetylacetonate (hfac) gave novel multicoordinated β-diketonate copper(I) Lewis base ligand complexes. The synthesis and spectroscopic data of tetravinylsilane biscopper(I)hfac complex (TVSB[Cu]hfac) (1), tetravinylsilane tetrakiscopper(I)hfac (TVST[Cu]hfac) (2), and tetrallylsilane triscopper(I)hfac complex (TASTri[Cu]hfac) (3) are presented, and the structural characterization of tetravinylsilane tetrakiscopper(I)hfac (TVST[Cu]hfac) (2) is reported.
Early clinical experience with networked system for promoting patient self-management. (2011)

The system appears to be safe and effective in capturing and integrating adherence and physiologic data. Efforts are under way to enhance system functionalities and refine user interfaces. By providing context-rich information, this system may enhance patient-provider collaboration.
A New Disposable Microvascular Double Clip (1987)

A new disposable microvascular double clip made of polycarbonate has been designed. In order to investigate whether or not the clip causes vascular damage, experiments were conducted with scanning electron microscopy and light microscopy, using the common carotid arteries of Fischer rats. The study revealed that the new clip did not produce any damage to the arterial wall. The clip has also been used in 30 clinical cases, with generally good results. The new microvascular clip is economical, atraumatic to the vascular wall, and is always in the best condition, because of its disposability. The device is very useful for both laboratory and clinical microvascular surgery.
An overview of the HORNE logic programming system (1983)

HORNE is a PROLOG-based logic-programming system embedded in LISP. Programming in HORNE involves a careful mixture of logic programming and LISP programming. Since the summer of 1981, HORNE has been continually evolving from its origin HCPRVR (Chester, 1979). The main implementation is in FRANZ LISP on a VAX; a scaled-down implementation also exists in UCI LISP on a PDP-10. Today, HORNE bears little resemblance to HCPRVR; the primary similarity being the manner of embedding logic in LISP and the LISP-logic interface. This paper conveys the flavor of the current state of the system sacrificing detail and completeness for succinctness and simplicity. After a brief overview of the basic system, this paper highlights those aspects of HORNE that differ from more conventional PROLOG systems. We assume that the reader is familiar with the rudiments of PROLOG and LISP. A more thorough account of the system may be found in the "Horne User's Manual" (Allen and Frisch, 1982).
Overview of Streaming Video Profile Amendment in MPEG-4 video standard (2002)

Streaming Video Profile is the subject of an Amendment in MPEG-4. It is developed in response to the growing need on a video coding standard for streaming video over the Internet. It provides the capability to distribute single-layer frame-based video over a wide range of bitrates with high coding efficiency. It also provides fine granularity scalability (FGS) and its combination with temporal scalability to address a variety of challenging problems in delivering video over the Internet. This paper provides an overview of the video coding techniques in this Amendment of the MPEG-4 video standard.
Colorimetric Detection of DNA Using Unmodified Metallic Nanoparticles and Peptide Nucleic Acid Probes (2009)

We have developed a colorimetric assay for DNA detection based on the aggregation of unmodified metallic nanoparticles. Charge neutral peptide nucleic acids (PNA) are used as a "coagulant" of citrate anion-coated particles and as hybridization probe. In the absence of a complementary target DNA, free PNA molecules in solution induce aggressive particle aggregation because of the removal of charge repulsion as a result of PNA coating on nanoparticles. When a complementary DNA is present and PNA-DNA complexes are formed, the particles remain stable because the negative charges of the DNA strands in the complexes adsorbed on the particle surface ensure sufficient charge repulsions. In this method, no probe immobilization is needed and PNA-DNA hybridization occurs in a homogeneous phase. The assay results are displayed as rapidly as the changes in color and/or in UV-vis adsorption spectra of the colloidal solutions. We have validated the assay principle using gold- and silver-nanoparticles (AuNPs and AgNPs), with the involvement of a shorter (13 mer) and a longer (22 mer) probe sequences. A specific DNA can be detected in the presence of at least 10 times of interference DNA, and the detection limit is at a DNA/PNA ratio of 0.05. When NaCl is added to accelerate the particle aggregation, the selectivity is further improved, and single-base-mismatch discrimination is achieved. A two-component assay using a mixture of AuNPs and AgNPs has also been constituted, aiming to improve the result accuracy by making use of the multiple aggregation signatures from the two types of particles. For single-base-mismatch discrimination, the AgNPs offer a higher sensitivity than AuNPs by showing more obvious spectra and color alternation, and the two-component assay offers three parameters in the UV-vis adsorption spectra.
Reconstruction of Root Morphology in Skeletonized Remains with Postmortem Dental Loss (1992)

A reversible technique is presented in which the root morphology of missing teeth in skeletonized human remains can be reconstructed for the purpose of radiographic comparison and postmortem identification. In this technique, which is based upon pilot studies with skeletonized mandibles of archival remains, the alveolar socket walls are sealed with a coat of cyanoacrylate cement and injected with a mixture of vinyl polysiloxane and barium sulfate. Radiographs are produced with the radiopaque mixture in place, which highlights the antemortem morphology of the roots. Subsequently, the impression material is removed, resulting in no gross alteration of the evidence. The radiographs made with this technique, as well as the impressions, can be stored for later use at a trial or pending the discovery of antemortem dental evidence.
On the stationary states in gradient echo imaging (1996)

A formalism is presented that concisely describes the magnetization of a sample subjected to a periodic series of RF pulses. In this formalism, the steady state of the magnetization is shown to be a sum of magnetic substates, each with unique contrast characteristics. When more than one substate contributes to a given image, the substates interfere with each other, producing ghosts and other artifacts. Properly designed gradient protocols can image single substates, producing ghost-free images. The contrast of the image depends largely on the choice of the imaged substate. Analytic solutions for unspoiled, RF spoiled, and gradient spoiled magnetizations are presented.
On the synthesis and manipulation of InAs quantum dots (2000)

A novel metalorganic route to small (ca. 2 nm diameter) InAs nanocrystals has been developed. The nanocrystals were analysed by a number of methods including HRTEM, photoluminescence and electronic spectroscopy. Distinct quantum size effects were observed in the optical properties, attributable to the nanoparticles having dimensions smaller than the Bohr exciton diameter of InAs (ca. 740 Å). The nanoparticles were spin coated into a thin film, the morphology of which was investigated by atomic force microscopy (AFM).
Miscibility and hydrolytic degradation of bioreabsorbable blends of poly(<i>p</i>‐dioxanone) and poly(<scp>L</scp>‐lactic acid) prepared by fusion (2006)

Abstract Blends of two semicrystalline polymers, poly( L ‐lactic acid) (PLLA) and poly( p ‐dioxanone) (PPD), were prepared by melting the polymers in different proportions. The miscibility, thermal behavior, dynamic‐mechanical properties, and morphology of these blends were studied using differential scanning calorimetry (DSC), dynamic‐mechanical analysis (DMA), and scanning electron microscopy (SEM). The melting temperature of PPD, determined by DSC, did not change with increasing PLLA content, suggesting that this system was immiscible. The presence of two glass transition temperatures detected by DMA also indicated the total immiscibility of the two polymers and this phase separation was confirmed by SEM. The stability of blends immersed in tubes containing phosphate buffer (pH = 7.4) in a thermally controlled bath at (37 ± 1)°C was assessed using DSC, thermogravimetric analysis (TGA), and SEM. PLLA degraded more slowly than PPD, whereas the blends had a degradation rate that was intermediate to these two polymers. This finding indicated that it was possible to control the degradation rate of the blend by changing its composition. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 1899–1912, 2006
Morphological features in aluminum nitride epilayers prepared by magnetron sputtering (2015)

Abstract The aim of this study is to characterize the surface topography of aluminum nitride (AlN) epilayers prepared by magnetron sputtering using the surface statistical parameters, according to ISO 25178-2:2012. To understand the effect of temperature on the epilayer structure, the surface topography was investigated through atomic force microscopy (AFM). AFM data and analysis of surface statistical parameters indicated the dependence of morphology of the epilayers on their growth conditions. The surface statistical parameters provide important information about surface texture and are useful for manufacturers in developing AlN thin films with improved surface characteristics. These results are also important for understanding the nanoscale phenomena at the contacts between rough surfaces, such as the area of contact, the interfacial separation, and the adhesive and frictional properties.
Bovine mu-calpain (CAPN1) gene: new SNP within intron 14. (2004)

The calpain system originally comprised molecules: two Ca2+-dependent proteases, mu-calpain and m-calpain, and a third polypeptide, calpastatin, whose only known function is to inhibit the two calpains. This proteolytic system plays a key role in the tenderisation process that occurs during post-mortem storage of meat under refrigerated conditioning. Their polymorphism is examined from the point of view of their effect on corresponding production traits. The calpain genes are investigated as potential candidate genes for a quantitative trait locus (QTL) affecting meat tenderness. In this study a new single nucleotide polymorphism (SNP) was found within intron 14 of the bovine CAPN1 gene, being transition C --> T at position 4685 nt (consensus sequence - GenBank No. AF 248054), as this mutation creates a new FokI restriction site detected with PCR-RFLP analysis. This sequence fragment of the SNP position has already been deposited in the GenBank database under accession No. AY639597. The RFLP-FokI polymorphism was studied in 141 bulls of seven breeds, including the native Polish Red (PR, preserved), and Polish Black-and White (BW) breed. The frequency of alleles T and C varied between the breeds considered, the mean reaching 0.38 and 0.62, respectively. Associations between CAPN1/FokI gene polymorphism and meat production traits were studied in BW (n = 84) young bulls. In the animals of the TT genotype the lean share in valuable cuts (%) was found more favourable than in CC animals.
Chromate conversion coated aluminium as a light-weight and corrosion-resistant current collector for aqueous lithium-ion batteries (2015)

We report chromate conversion coated (CCC) aluminium foil as a corrosion-resistant current collector in aqueous lithium-ion battery cathodes. CCC aluminium-based electrodes show better cycling stability and higher coulombic efficiency than those fabricated on stainless steel and titanium foils.
Analysis of Miniature Frequency Selective Surfaces Based on Fractal Antenna–Filter–Antenna Arrays (2012)

A novel type of miniature bandpass frequency selective surface (FSS) based on fractal antenna-filter-antenna (AFA) array is proposed. The AFA-based FSSs exhibit superior frequency selectivity and have lower profile than conventional FSSs. However, they commonly occupy considerably large unit sizes. Fractal geometries are utilized in this letter to reduce the unit cell of AFA-based FSSs. The iteration order and iteration factors of the utilized fractals including Minkowski island-shaped transmit/receive patches and fractal cross-shaped coupling aperture are analyzed. A prototype of the proposed FSS operated at C-band is fabricated and tested using waveguide measurement setup, and good agreement is obtained between measured and simulated results.
Power-Law Flow through a Packed Tube (1965)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPower-Law Flow through a Packed TubeR. H. Christopher and Stanley MiddlemanCite this: Ind. Eng. Chem. Fundamen. 1965, 4, 4, 422–426Publication Date (Print):November 1, 1965Publication History Published online1 May 2002Published inissue 1 November 1965https://pubs.acs.org/doi/10.1021/i160016a011https://doi.org/10.1021/i160016a011research-articleACS PublicationsRequest reuse permissionsArticle Views2130Altmetric-Citations345LEARN 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 options Get e-Alerts
The Ammonia Solution: Ammonia engines and fuel cells in cargo ships could slash their carbon emissions (2021)

This colorless fuel emits no carbon dioxide when burned. It's abundant and common, and it can be made using renewable electricity, water, and air. Both fuel cells and internal combustion engines can use it. Unlike hydrogen, it doesn't need to be stored in high-pressure tanks or cryogenic dewars. And it has 10 times the energy density of a lithium-ion battery. For all these reasons, ammonia (NH <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> ) is gaining favor in the global shipping industry, a multitrillion-dollar machine in need of cleaner fuels to power the freighters and tankers that haul manufactured goods and bulk materials across the ocean. Shipping companies seek climate-friendlier alternatives to petroleum that can propel their behemoth vessels for days or weeks at sea and still leave room on board for cargo.
The Formation of ReS<sub>2</sub> Inorganic Fullerene-like Structures Containing Re<sub>4</sub> Parallelogram Units and Metal−Metal Bonds (2002)

The encapsulation of ReO(x) within ReS(2) inorganic fullerene-like cages is described for the first time. The encapsulate was prepared by the sulfidization of both hand-milled and ball-milled samples of ReO(2); partial conversion of the oxide to the sulfide was achieved with the degree of sulfidization depending on the exposure to the sulfidizing agent, H(2)S.
A comparison of load commutated inverter systems for induction heating and melting applications (1991)

A comparative analysis of a current source inverter and a voltage source inverter suitable for induction heating and melting applications is presented. Both power supplies considered operate on the principle of load commutation. The comparison is based on criteria such as input power factor, component ratings, maximum and minimum operating frequencies, operation under varying load conditions, inverter starting capability, and system and control simplicity. The voltage source series resonant inverter is found to offer the best overall performance with respect to converter utilization.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Copulation induces an acute increase in epididymal sperm numbers in rats (1985)

The temporal changes in epididymal sperm numbers during the month after sexual contact were examined in 80 adult albino rats. The comparably sexually experienced males in 6 experimental groups were allowed 3 ejaculations with ovariectomized females in which oestrus was induced by hormone injections. Epididymides were removed from the experimental males 1 h, 1 day, 2 days, 3 days, 7 days or 30 days later. Control males were sexually inexperienced or sexually experienced and living with females. Epididymal sperm counts revealed a pattern that resembled an inverted V-shaped function with a peak at 48 h after copulation. We suggest that sexual activity provokes an acute attenuation of sperm disposal within the epididymis with the result that more spermatozoa are available for ejaculation during sexually active times.
The concept of ‘doping’ of conducting polymers: the role of reduction potentials (1985)

Abstract The conductivity of certain organic polymers can be raised to metallic levels by chemical or electrochemical ߢp-doping’ (oxidation), or ‘n-doping’ (reduction). Polyacetylene, (CH)x, the prototype conducting polymer, has been studied more extensively than any other conducting polymer and the doping concepts involved appear to be applicable to other polymer systems. The doping of an organic polymer to achieve certain metallic properties is phenomenologically similar to the doping of a classical inorganic semiconductor in that very large increases in conductivity are observed when the material takes up very small amounts of certain chemical species. However, mechanistically it is different in that the doping of an organic polymer involves simply the partial oxidation or reduction of the polymer, each oxidation state exhibiting its own characteristic reduction potential. The dopant ion incorporated may be derived from the chemical dopant species or it may be completely unrelated to it. The reduction potentials of neutral trans-(CH)x its various oxidized or reduced states, and also the band gap of cis- and trans-(CH)x have been determined electrochemically. The reduction potentials have been used, together with known standard reduction potentials of a variety of redox couples, to rationalize the doping of (CH)x to achieve metallic conductivity by using a number of dopant species, including I2, Li, AgClO4, gaseous O2, H2O2 or benzoquinone (the last three species in aqueous HBF4) and aqueous HClO4, etc. The stability of p-doped polyacetylene in aqueous acidic media is ascribed to the fact that a positive charge on a CH unit in trans-(CH)x is delocalized over approximately fifteen carbon atoms in what is termed a ‘positive soliton’. This reduces the ease of nucleophilic attack of the partly oxidized polymer chain. The O2-doping of (CH)x permits the use of (CH)x as an electrocatalytic electrode for the spontaneous reduction of oxygen at one atmosphere pressure and at room temperature in strong aqueous HBF4 solutions. It is concluded that reduction potentials can be used to rationalize the ability of certain dopants to increase the conductivity of selected organic polymers by many orders of magnitude and that they may also be used to predict new chemical species that are therm odynamically capable of acting as p- or n-dopants.