gebhart/patrepeval huggingface dataset:
Metal supported carbon nanostructures for hydrogen storage (2012)

Carbon nanocones are the fifth equilibrium structure of carbon, first synthesized in 1997. They have been selected for investigating hydrogen storage capacity, because initial temperature programmed desorption experiments found a significant amount of hydrogen was evolved at ambient temperatures. The aim of this thesis was to study the effect of impregnation conditions on metal catalyst dispersion and to investigate whether the metal loaded cones had improved hydrogen storage characteristics. Pre-treatment of carbon nanocones with hydrogen peroxide was carried out, followed by metal decoration in aqueous solution by an incipient wetness technique. Two methods of reducing the metal catalyst have been applied: in hydrogen at room temperature (RT) and in an aqueous solution of NaBH4. X ray diffraction (XRD) technique confirmed the complete metal reduction and transmission electron microscope (TEM) analysis showed that the reduction technique affected the catalyst dispersion. Very fine dispersions of ca. 1 nm diameter metal clusters at catalyst loadings of 5 wt% were achieved and high dispersions were retained for loadings as high as 15 wt%. Hydrogen uptakes at RT were measured and an increase with metal loading was observed. In comparison the same route of pre-treatment and metal impregnation has been done over graphite nanofibres (GNF) and the hydrogen uptake showed an adsorption superior of the cumulative contribution of the substrate and metal catalyst attributing this to hydrogen spillover.\n\nThe GNF have been impregnated also with another metal catalyst Ni showing as well the phenomenon of hydrogen spillover. \n\nThe attempt to impregnate the carbon nanocones with a mixture of Pd-Ni, Pd-Cu and Pd-Ag resulted in an increase of hydrogen uptake for the first two but a decrease for the last of these. \n\nThe carbon nanocones have been also impregnated with a Mg organometallic precursor dibutyl magnesium (DBM) and then decomposed without the use of hydrogen environment synthesizing successfully MgH2. The stoichiometry and the enthalpy of this decomposition have been studied.\n\nFurthermore, the DBM has been mixed with another hydride LiALH4 and the decomposition reaction of the complex hydride has been studied.
Local Administration of Morphine for Analgesia after Iliac Bone Graft Harvest (2002)

To the Editor:-Dr. Bernards' conclusion that gene therapy may be in our future, albeit in a very limited way, may be based on too limited a view of what clinical anesthesiology could become. 1 For example, several laboratories in departments of anesthesiology are looking for new classes of biopharmaceuticals that target gene expression, not to mention viral vectors and other means of inserting novel genes, for the purpose of preconditioning vital organs that are likely to be jeopardized during pending surgery. How many of us could have foreseen the confluence of gene therapy and cerebral preconditioning 10 yr ago? And how many unforeseen applications of gene therapy in anesthesiology will be under investigation in 2011?
Near infrared spectroscopy (NIRS) of the thenar eminence in anesthesia and intensive care (2012)

Near infrared spectroscopy of the thenar eminence (NIRSth) is a noninvasive bedside method for assessing tissue oxygenation. The NIRS probe emits light with several wavelengths in the 700- to 850-nm interval and measures the reflected light mainly from a predefined depth. Complex physical models then allow the measurement of the relative concentrations of oxy and deoxyhemoglobin, and thus tissue saturation (StO2), as well as an approximation of the tissue hemoglobin, given as tissue hemoglobin index.Here we review of current knowledge of the application of NIRSth in anesthesia and intensive care.We performed an analytical and descriptive review of the literature using the terms "near-infrared spectroscopy" combined with "anesthesia," "anesthesiology," "intensive care," "critical care," "sepsis," "bleeding," "hemorrhage," "surgery," and "trauma" with particular focus on all NIRS studies involving measurement at the thenar eminence.We found that NIRSth has been applied as clinical research tool to perform both static and dynamic assessment of StO2. Specifically, a vascular occlusion test (VOT) with a pressure cuff can be used to provide a dynamic assessment of the tissue oxygenation response to ischemia. StO2 changes during such induced ischemia-reperfusion yield information on oxygen consumption and microvasculatory reactivity. Some evidence suggests that StO2 during VOT can detect fluid responsiveness during surgery. In hypovolemic shock, StO2 can help to predict outcome, but not in septic shock. In contrast, NIRS parameters during VOT increase the diagnostic and prognostic accuracy in both hypovolemic and septic shock. Minimal data are available on static or dynamic StO2 used to guide therapy.Although the available data are promising, further studies are necessary before NIRSth can become part of routine clinical practice.
VLSI architectures for real-time moving image resampling (2002)

This paper presents a solution for real-time image resampling, using dedicated VLSI architectures. The spatial image resampling algorithm is based on the use of two levels for the interpolation and relies on a tradeoff between storage and calculation of the filter coefficients, improving the performance-cost tradeoff of the hardware. Efficient motion compensated temporal resampling is carried out with a high performance motion estimation algorithm. Multiprediction, multiresolution and hierarchical approaches lead to an overall reduced computation power compared to classical block-matching algorithms.
A Comparison of Various Alkali Gas Cell Atomic Frequency Standards (1986)

Abstract : The present calculations indicate that a Rubidium gas cell standard shows the greatest potential for frequency stability, and in this regard nature has been uncommonly propitious. One should not, however, interpret this result as a superiority of the Rb87 standard in all regards. For example, if it is of primary importance to construct a miniature gas cell standard; then cesium might prove to be more advantageous given the fact that its minimum volume cavity occupies less than half the volume of a corresponding Rb87 cavity. Additionally, magnetic field sensitivities are less for Cs133 as a consequence of its greater hyperfine transition frequency. The only statement one should make regarding the present results is that of all the possible alkali gas cell standards that could be considered, a Rb87 standard appears to yield the best attainable short-noise-limited performance.
Low-Complexity Frequency Offset Estimation for Probabilistically Shaped MQAM Coherent Optical Systems (2022)

Since the reduction of the proportion of high modulus constellation points with π/4 + <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">k</i> π/2 ( <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">k</i> = 0, 1, 2, 3) modulation phase in probabilistically shaped (PS)- <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">M</i> -ary quadrature amplitude modulation (MQAM) deteriorates the power spectrum peak of frequency offset from the 4th power signal, the conventional 4th power Fast Fourier Transform (FFT) algorithm is not suitable for PS-MQAM under moderate or strong shaping. In this paper a low-complexity multi-format frequency offset estimation (FOE) scheme is proposed, where the coarse estimation is based on extended quadrature phase shift keying (QPSK) partitioning and quasi-linear approximation in polar coordinates at the first stage, and the fine estimation in subsequent stage using Digital Amplification and 4th power FFT with Sparse Operation. The computational complexity is approximately reduced by 71% compared with radius directed (RD) 4th power FFT algorithm with the same mutual information (MI) performance under 2e-2 bit error rate (BER). Dual polarization (DP) PS-16/32/64QAM numerical simulations prove that the normalized mean square error (NMSE) of proposed FOE scheme is an order of magnitude lower than that of RD 4th power FFT algorithm. The higher FOE accuracy has been demonstrated experimentally in DP PS-16/32QAM systems.
User Interface Layout Recommendation Based on Pairing Model (2018)

In order to facilitate the generation of user interfaces from mockups, an approach was proposed to recommend User Interface (UI) layout based on Pairing Model. The absolute layout data of interfaces, including types, text, positions and sizes of components, are input into the model to generate layout. Paring Model is trained by machine-learning algorithms with features extracted from UI galleries. On the levels of functional and spatial relationship, the model decides pairing of input components and recommends a suitable layout. With use of component features, by machine-learning algorithms, the types of components are identified, which are the leaf nodes of the output layout hierarchy. The experiments on 3362 interface instances from 800 open source apps proved that the accuracy of the proposed approach, on average, exceeds 90%.
Swelling behaviors of polyacrylate superabsorbent in the mixtures of water and hydrophilic solvents (2000)

The swelling behaviors of polyacrylate superabsorbent in the mixtures of water and hydrophilic solvents, including methanol, ethanol, ethylene glycol, glycerol, acetone, dimethyl formamide, and dimethyl sulfoxide, were investigated. In 20 wt % solvent–water mixture, the superabsorbent with granularity between 40- and 80-mesh could reach swelling equilibrium at 25°C in several hours. It was also found that mixture temperature between 15 and 35°C had little influence on absorbency. Furthermore, the influence of water temperature between 0.5 and 99°C on absorbency was also rather limited when the superabsorbent was swelled by distilled water. The mixture concentration influenced absorbency significantly by changing the solubility parameter of the solvent–water mixture, particularly when the solubility parameter of the solvent–water mixture was < 20. The equilibrium absorbency was very high when the solubility parameter of the mixture was > 20, whereas the absorbing capacity of the superabsorbent was very low when the solubility parameter was < 17.5. The polarity fraction of solvents did not have any obvious influence on equilibrium absorbency, but not enough polarity fraction might affect the absorbing rate. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 75: 1331–1338, 2000
STUDY OF GOLD LEACHING WITH BROMINE AND BROMIDE AND THE INFLUENCE OF SULPHIDE MINERALS ON THIS REACTION (2014)

This paper presents experimental evidence that supports the use of bromine/bromide as a potential alternative to conventional cyanidation for gold leaching. The study evaluated a brominebased lixiviant, Stabilized Bromine, with considerably lower vapour pressure than liquid bromine. Using a rotating device, the rate of gold dissolution was determined at various concentrations of this reagent. The reactivity of pure pyrite, arsenopyrite and chalcopyrite minerals was also evaluated in stabilized bromine reagent. Furthermore, bromine leaching of gold in a number of gold bearing ores was undertaken. Results showed that significantly higher gold recovery can be achieved with bromine than with cyanide when leaching gold encapsulated in sulphides, but bromine consumption was high owing to simultaneous oxidation of the sulphides. The greatest promise for the bromine leach process was with oxidized gold ores. The recovery of gold from oxide ores with bromine was comparable to that achievable with cyanide and bromine consumption was reasonable when leaching was conducted at a near neutral pH of ~6. In the case of oxidized gold ores containing copper mineralization, it is possible that bromine consumption may be lower than cyanide consumption, since there is evidence to suggest that bromine is less reactive than cyanide with copper minerals.
Efficient Algorithm for Passivity Enforcement of $S$-Parameter-Based Macromodels (2009)

This paper presents an efficient and robust algorithm for passivity enforcement of <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">S</i> -parameter-based macromodels. The method computes updated values of the model residues by least squares fitting of nonpassive residuals of the scattering matrix. Several examples show that the proposed method yields accurate passive macromodels at a limited computational cost.
Isolation of circulating tumor cells in non-small-cell-lung-cancer patients using a multi-flow microfluidic channel (2019)

Circulating tumor cells (CTCs) carry a wealth of information on primary and metastatic tumors critical for precise cancer detection, monitoring, and treatment. Numerous microfluidic platforms have been developed in the past few years to capture these rare cells in patient bloodstream for deciphering the critical information needed. However, the practical need for a high-quality method of CTC isolation remains to be met. Herein, we demonstrate a novel multi-flow microfluidic device that is able to sensitively provide high purity (>87%) of separation outcome without labeling. Our device is constructed and configured based on the phenomenal effect of size-dependent inertial migration. The recovery rate of >93% has been achieved using spiked cancer cells at clinically relevant concentrations (10 cells per 5 mL and above). We have also successfully detected CTCs from 6 out of 8 non-small-cell-lung-cancer (NSCLC) patients, while none for 5 healthy control subjects. With these results, we envision our approach is a promising alternative for reliable CTC capture, and thus for facilitating the progress of extracting information from CTCs to personalize treatment strategies for solid tumor patients.
Toward common radar &amp; EW multifunction active arrays (2010)

Military Air platforms are fitted with Fire Control or Surveillance Radars, usually operating in X-band, Electronic Warfare Systems (EWS), and some radio links. Each of these systems is dedicated to a particular task and the cooperation is reduced to a minimal exchange of information between them mainly for avoiding mutual disturbances. Major system performance enhancements are to be expected thanks to close co-operations of one sensor to each others and thanks to the sharing of resources, especially in the field of multifunction AESA antenna sharing. The future co-operations can be ordered in four levels. The levels one to three lead progressively to a multi-functions sensor. The last one is the deployment, on a single or multiple platforms, of compact multi-functions sensors on a network basis. Another area of co-operation is the realization of R.F. functions such as “ad-hoc” communication functions using the Radar or the EWS multifunction R.F. and antennas.
Front Matter (2015)

No AccessJul 2015Front MatterAuthors/Editors: Tony ReadTony Readhttps://doi.org/10.1596/978-1-4648-0572-1_fmAboutView ChaptersFull TextPDF (0.8 MB) ToolsAdd to favoritesDownload CitationsTrack Citations ShareFacebookTwitterLinked In Next chapter FiguresreferencesRecommendeddetails View Published: July 2015ISBN: 978-1-4648-0572-1e-ISBN: 978-1-4648-0573-8 Copyright & Permissions Related RegionsAfrica PDF DownloadLoading ...
High Resolution Positive-Working Molecular Resist Derived from Truxene (2009)

A novel molecular resist based on a new amorphous molecule, a truxene derivative, was designed and synthesized. Truxene is characterized as an amorphous solid with a high glass transition temperature (Tg). H alf-pitch (hp) 50 nm line-and-space (1 : 1) positive pattern was fabricated by the exposure of an electron beam (30 keV) using the novel molecular resist. Design of novel molecular resists based on the truxene derivative is promising for development of more efficient molecular resists.
Impact of satellite surface wind observations on ocean surface wind analyses and numerical weather prediction (2010)

Since the 1970s, an extensive series of data impact studies has been performed to evaluate and enhance the impact of satellite surface wind data on ocean surface wind analyses and fluxes, atmospheric and oceanic modeling, and weather prediction. These studies led to the first beneficial impacts of scatterometer winds on numerical weather prediction (NWP), the development of the methodology to assimilate surface wind speeds derived from passive microwave radiometry, and the operational use of satellite surface winds by marine forecasters and NWP models. In recent years, the impact of these data on NWP has decreased as more competing data have become available; however, the results of our recent experiments still show a very significant impact of satellite surface winds on ocean surface wind analyses and on the prediction of selected storms over the oceans.
Generalized prolate spheroidal wave functions for optical finite fractional Fourier and linear canonical transforms (2005)

Prolate spheroidal wave functions (PSWFs) are known to be useful for analyzing the properties of the finite-extension Fourier transform (fi-FT). We extend the theory of PSWFs for the finite-extension fractional Fourier transform, the finite-extension linear canonical transform, and the finite-extension offset linear canonical transform. These finite transforms are more flexible than the fi-FT and can model much more generalized optical systems. We also illustrate how to use the generalized prolate spheroidal functions we derive to analyze the energy-preservation ratio, the self-imaging phenomenon, and the resonance phenomenon of the finite-sized one-stage or multiple-stage optical systems.
Chemical stability of a prostacyclin analog due to the absence of intramolecular catalysis (1988)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChemical stability of a prostacyclin analog due to the absence of intramolecular catalysisNils Aake Bergman and Torbjoern HalvarssonCite this: J. Org. Chem. 1988, 53, 11, 2548–2552Publication Date (Print):May 1, 1988Publication History Published online1 May 2002Published inissue 1 May 1988https://doi.org/10.1021/jo00246a027RIGHTS & PERMISSIONSArticle Views409Altmetric-Citations11LEARN 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 InReddit PDF (640 KB) Get e-AlertsSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts
Bioinspired supramolecular fibers for mercury ion adsorption (2013)

A novel photo-cross-linkable nanofiber based on a uracil-functionalized polymer, poly[1-(4-vinylbenzyl uracil)] (PVBU), was prepared using the electrospinning technique. This PVBU nanofiber can be converted into a covalent network nanofiber through exposure to UV light at a wavelength of 254 nm. This PVBU nanofiber is able to distinguish and selectively remove mercury ions (Hg2+) from other metal ions in aqueous solution. The maximum Hg2+ adsorption capacity of the PVBU nanofiber is 543.9 mg g−1, which is significantly higher than that of cyclic imide derivatives. The improved adsorption of Hg2+ allows a detection limit of less than 1 ppm, which has rarely been achieved for Hg2+ sensing. Furthermore, the PVBU fiber can be reused for 10 consecutive cycles using 1.0 M HCl treatment. This new material has significant potential for the simultaneous detection and separation of Hg2+ in environmental and industrial fields.
Replication of 0.1-μm geometries with x-ray lithography (1975)

The effective range of secondary electrons generated by Al Kα radiation is measured in polymethylmethacrylate (PMMA) as 400 Å. Lines with 0.1-μm linewidth with high aspect ratios are successfully replicated with x rays. Problems connected with the replication of very low contrast masks are discussed. Carbon Kα radiation is proposed as the radiation to be used for the replication of very fine geometries around or below 0.1 μm.
Introduction: 2013 Franz Edelman Award for Achievement in Operations Research and the Management Sciences (2014)

This special issue of Interfaces is devoted to the finalists of the 42nd annual competition for the Franz Edelman Award for Achievement in Operations Research and the Management Sciences, the profession’s prestigious award for the practice of operations research and business analytics. As in previous years, the six finalists this year cover a wide range of industries, functions, and countries around the globe.
Survivable traffic grooming in elastic optical networks &#x2014; Shared path protection (2012)

This study investigates the survivable traffic grooming problem for elastic optical networks with flexible grid employing new transmission technologies, e.g., orthogonal frequency-division multiplexing (OFDM). In such networks, the strict ITU-T wavelength grid is not followed. Instead, optical transponders are developed to be capable of properly tuning their rates. Equipping the network with gridless and elastic optical paths allows us to efficiently use the optical spectrum. In this paper, we propose a novel elastic shared path protection (ESPP), which does not only provide the traditional backup sharing of shared path protection (SPP) (i.e., the backup capacity of one optical path (i.e., lightpath) can be shared among multiple backup paths, provided that their corresponding working paths are link-disjoint), but also explores a new opportunity of sharing enabled by the tunability of the transponders: in fact, the backup spectrum can be shared between two adjacent lightpaths on a link, if their corresponding working paths are link-disjoint. The elasticity of the transponder enables the expansion and contraction of the lightpaths, so that at one time, the backup spectrum is used by only one of the adjacent lightpaths. Note that in traditional wavelength-division-multiplexing (WDM) networks, the lightpaths are fixed-grid, rigid-bandwidth, nor can they overlap each other. Our results show that ESPP is more spectrum efficient than traditional SPP.
Smooth symmetric bilinear forms on ${\mathcal L}_s(^2l_{\infty}^2)$ (2022)

In [Carpathian Math. Publ. 2020, 12 (2), 340-352], the author classified the extreme points and exposed points of the unit ball of the space of symmetric bilinear forms on the space ${\mathcal L}_s(^2l_{\infty}^2)$, where ${\mathcal L}_s(^2l_{\infty}^2)$ is the space of symmetric bilinear forms on the plane with the supremum norm. Motivated by this paper, we classify the smooth points of the unit ball of the space of symmetric bilinear forms on ${\mathcal L}_s(^2l_{\infty}^2).$
Laparoscopic herniorrhaphy: results and technical aspects in 450 consecutive procedures. (1993)

Laparoscopic inguinal herniorrhaphy is a safe and effective procedure. It compares favorably with other classic methods of hernia repair (especially use of a tensionless repair with mesh). Patients exhibit minimum morbidity and ambulate soon with minimal discomfort. This repair should be considered preferential in many subsets of patients.