gebhart/patrepeval huggingface dataset:
Effects of full-height nonstructural partitions on modal properties of two nominally identical building floors (2009)

This paper presents a combined experimental and numerical investigation of the modal properties of two full-scale and nominally identical steel–concrete composite floors. The floors were one above the other in the same fully operational multi-storey building. Both floors accommodated open-plan as well as partitioned offices. Multi-input-multi-output (MIMO) modal testing was employed to measure as-built modal properties of both floors. It was found that the two nominally identical floors had different modal characteristics, likely due to the different arrangement of partitions in the floor. It was also found that the measured modes on both floor levels experienced a considerable level of complexity, likely to be caused by nonproportional damping. Finite element (FE) models were developed in ANSYS for both floors using best engineering judgement and their features and properties were then tuned to match the measured counterparts. The tuning was done manually by trial-and-error and then automatically using sensitivity-based FE model updating procedure implemented in the FEMtools software. It was found that the initial and geometrically very detailed FE models, which did not feature any nonstructural components, underestimated the measured natural frequencies by up to a considerable 20%–25%, depending on the floor level. When full-height plasterboard and glass partitions were explicitly modelled as vertical springs connected to the floor and grounded at the other end, the correlation between the experimental and FE results improved considerably.
Peracid oxidation of imino ethers (1974)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPeracid oxidation of imino ethersDonald H. Aue and Darryl ThomasCite this: J. Org. Chem. 1974, 39, 26, 3855–3862Publication Date (Print):December 1, 1974Publication History Published online1 May 2002Published inissue 1 December 1974https://pubs.acs.org/doi/10.1021/jo00940a012https://doi.org/10.1021/jo00940a012research-articleACS PublicationsRequest reuse permissionsArticle Views512Altmetric-Citations38LEARN 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
Mucus Synthesis and Sulfhydryl Groups in Cytoprotection Mediated by Dehydroleucodine, a Sesquiterpene Lactone (1994)

The aerial parts of Artemisia douglasiana have been used in folk medicine as a cytoprotective agent against the development of peptic ulcer. Dehydroleucodine [1], its active principle, significantly prevents the formation of gastric lesions induced by the exposure of the rats to absolute ErOH. It was found in this study that (a) pretreatment of rats with 1 (40 mg/kg, po) caused a significant increase in glycoprotein synthetic activity, approximately sevenfold as large as that of the control; and (b) pretreatment of the rats with the thiol reagent N-methylmaleimide (NEM) significantly diminished the cytoprotection provided by 1. However, the protective effect of 1 was not totally abolished by pretreatment with a combination of indomethacin and NEM, indicating additional mechanisms are involved in the cytoprotective action of 1.
Monte Carlo Simulations of the GE Discovery Alcyone CZT SPECT Systems (2015)

Compact SPECT systems with cadmium zinc telluride (CZT) solid-state detectors with improved energy resolution and shorter acquisition times have recently been introduced. These systems have, however, different energy characteristics compared to NaI(Tl) crystal-based cameras; therefore, a need exists to develop new simulation models for these cameras. We modeled the charge transport within the CZT detectors for a GE Discovery 530c/570c SPECT system with multiple pinhole collimators employing the SIMIND Monte Carlo program and validated simulations against measurements. The incomplete charge collection between the anode and cathode in the pixilated CZT was modeled with the Hecht equation. The simulation also included charge-sharing effects across pixels due to physical interactions and charge diffusion. To validate our CZT-model, <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">99m</sup> Tc and <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">123</sup> I point sources and a <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">201</sup> Tl line source were acquired and measured. Measured energy spectra were compared with simulated energy spectra. The Monte Carlo simulated energy spectra agreed well with the experimental measurements within the photopeak, overestimated the k-edge x-ray escape peaks of cadmium and telluride, and slightly underestimated the remainder of the tail. Comparisons of system sensitivity and spatial resolution were also conducted for an array of point source locations with results showing excellent agreement. Lastly, to demonstrate a clinically realistic case, a simulation of an anthropomorphic phantom with a cardiac insert and an inferior defect was performed. Simulated projections were processed using the GE Xeleris software confirming the accuracy of the SIMIND geometry. We conclude that it is feasible to simulate the GE Discovery 530c/570c SPECT system using the SIMIND code.
Molecular biology and biochemistry of pyruvate dehydrogenase complexes <sup>1</sup> (1990)

In most organisms, the pyruvate dehydrogenase complex catalyzes the pivotal irreversible reaction that leads to the consumption of glucose in the aerobic, energy-generating pathways. A combination of biochemical and molecular biology studies have greatly expanded our understanding of the overall structural organization of this multicomponent system, delineated the locations and elucidated the functions of structural domains of the catalytic components, and revealed significant evolutionary changes. Important to this progress was the deduction of the primary amino acid sequences from cDNA clones for each of the catalytic components from several species. The greatest detail is available for the FAD-containing dihydrolipoamide dehydrogenase component, which is the only component for which tertiary structure information has recently emerged. For the dihydrolipoamide acetyltransferase core component, a similar but species-variable multidomain structure is established that is responsible for the distinct architectures of the inner cores, the peripheral binding of the other components, and the conveyance of reaction intermediates between distantly separated active sites. A second lipoyl-bearing component, protein X, has been shown to play a critical role in the organization and function of the complex from many higher organisms. Although much is known about the means of effector modulation of mammalian complex activity, identification of the signal eliciting its regulation by insulin still poses an exciting challenge.
Defining seedling specifications for<i>Eucalyptus globulus</i>: effects of seedling size and container type on early after-planting performance (2006)

Large and small seedlings (early- and late-germinated, respectively; with a two-fold height difference) were raised in Colmax 72 (volume 45 mL, 50 mm deep), Premium Plastic 104 (volume 85 mL, 73 mm deep) and Lannen 63 (volume 115 mL, 90 mm deep) containers in the Western Australia Plantation Resources (WAPRES) nursery, Manjimup, Western Australia (WA). The seedlings were planted into field trials at 'Oldhams' treefarm, a site near Manjimup (WA) considered of high risk to spring beetle attack, and at 'Capaul', 'Knebsworth', and 'Stribling' treefarms in the 'Green Triangle' (GT) region of western Victoria, Australia. The trials in the GT traversed an estimated production gradient that was strongly linked to average rainfall. At all sites, seedling height and diameter (and leaf area loss to spring beetles at Oldhams only) were assessed at planting and at 2, 4 and 6 mo after planting. Seedlings were harvested at 4 mo at Oldhams and at 2 and 4 mo in the GT trials for nitrogen and biomass analysis. Six months after planting, mortalities ranged from 0 to 2.5% in the GT trials, and from 4 to 11% at Oldhams, and were not related to nursery treatment. There was no effect of initial seedling size on growth 6 mo after planting, but a strong effect of container type in all GT trials. At Oldhams there was no effect of seedling size but there was an effect of container type at 6 mo after planting. In the GT trials, biomass and height growth at 6 mo was least in Colmax 72-raised seedlings, intermediate in Lannen 63-raised seedlings and greatest in Premium Plastic 104-raised seedlings. The performance of seedlings raised in Colmax 72 containers planted into the GT trials may be related to the effects of the small container size on root architecture and/or seedling nutrition. The intermediate growth of seedlings raised in Lannen 63 containers, that had the largest container volume, indicates that factors other than container volume affect seedling performance.
Engineering of Hyperbranched Polyethylene and its Future Applications (2008)

The present study is concerned with the modification of hyper branched polyethylene (HBPE) via peroxide initiation and grafting with maleic anhydride. High-temperature solution modification using xylene as solvent was conducted, and the resultant material was characterized in terms of its structural, rheological, and physical properties, and compared to its unmodified counterpat. Moreover, the susceptibility of hyperbranched polyethylene to degradation/ crosslinking is investigated and compared to other commercially available polyolefins. Nevertheless, crosslinking of maleic anhydride grafted hyperbranched polyethylene is conducted in exploration of potential applications for this material. Peroxide initiated modification of hyper branched polyethylene was conducted to examine its vulnerability to degradation/ crosslinking relative to other commercially available polyolefins. Creep recovery was used to measure the percentage change in zero shear viscosity upon modification while <sup>13</sup>C-NMR was used to give the number of methyl, methylene, and methane groups. The work elucidated that the dominant reaction undergone by hyperbranched polyethylene upon peroxide initiated modification is degradation, in a fashion similar to polypropylene, which is due to its high degree of branching. Peroxide initiated grafting of hyper branched polyethylene with maleic anhydride was conducted and the effects of reaction time, reaction temperature, monomer concentration, initiator type, and initiator concentration were systematically examined. The structure of the resultant functionalized polymer was confirmed via FTIR and <sup>13</sup>C-NMR, and a maximal grafting density of 1.7 % was achieved using 2 wt.% MAH and 2 wt.% DCP in the preparation process. Alternating dominancy between the grafting reaction and other side reactions was noticeable when varying the initiator and the monomer concentrations. Moreover, a drop in the water contact angle upon modification suggested that the grafted polymer is more compatible with polar substrates. Furthermore, rheological characterizations showed that functionalized HBPE exhibits a Newtonian behavior, which is characteristic of its unmodified counterpart; however showed some slight shear thinning behavior at low temperatures. Crosslinking of HBPE-g-MAH using a diamine was conducted in solution and in melt in an effort to find a potential application for the resultant polymer. The structure of the resultant polymer was confirmed through FTIR and the effect of reaction time, reaction temperature, and diamine concentration on the degree of cross linking was investigated. A maximal degree of crosslinking of 70% was achieved, where the structure of the polymer was found to have tremendous effect on the concentration of diamine necessary to gel the polymer. Nonetheless, the formation of a soft solid material from two liquid reactants suggested that HBPE-g-MAH could be a potential material for reaction injection molding applications.
Efficient Direct Formic Acid Fuel Cells (DFAFCs) Anode Derived from Seafood waste: Migration Mechanism (2017)

Commercial Pt/C anodes of direct formic acid fuel cells (DFAFCs) get rapidly poisoned by in-situ generated CO intermediates from formic acid non-faradaic dissociation. We succeeded in increasing the Pt nanoparticles (PtNPs) stability and activity for formic acid oxidation (DFAFCs anodic reaction) by embedding them inside a chitosan matrix obtained from seafood wastes. Atop the commercial Pt/C, formic acid (FA) is predominantly oxidized via the undesired poisoning dehydration pathway (14 times higher than the desired dehydrogenation route), wherein FA is non-faradaically dissociated to CO resulting in deactivation of the majority of the Pt active-surface sites. Surprisingly, PtNPs chemical insertion inside a chitosan matrix enhanced their efficiency for FA oxidation significantly, as demonstrated by their 27 times higher stability along with ~400 mV negative shift of the FA oxidation onset potential together with 270 times higher CO poisoning-tolerance compared to that of the commercial Pt/C. These substantial performance enhancements are believed to originate from the interaction of chitosan functionalities (e.g., NH<sub>2</sub> and OH) with both PtNPs and FA molecules improving FA adsorption and preventing the PtNPs aggregation, besides providing the required oxygen helping with the oxidative removal of the adsorbed poisoning CO-like species at low potentials. Additionally, chitosan induced the retrieval of the Pt surface-active sites by capturing the in-situ formed poisoning CO intermediates via a so-called "migration mechanism".
A 28-GHz CMOS Direct Conversion Transceiver With Packaged <inline-formula> <tex-math notation="LaTeX">$2 \times 4$ </tex-math> </inline-formula> Antenna Array for 5G Cellular System (2018)

This paper describes a 28-GHz CMOS direct conversion transceiver with packaged 2 × 4 patch antenna array for 5G communication. Beamforming antenna and reconfigurable transceiver architecture are used for high effective isotropic radiated power (EIRP). For low error vector magnitude (EVM), switchless matching transmitter (Tx)/receiver (Rx) to antenna and 28-GHz injection-locked local oscillator (LO) generator are employed. Test chip was fabricated in 28-nm RF CMOS process. Measurement results show Tx EIRP <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">sat</sub> of 31.5 dBm (P <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">sat</sub> of 10.5 dBm in one power amplifier (PA)), EIRP <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">max</sub> 24 dBm (Pmax of 2 dBm with backoff of 7.5 dB in one PA), Rx noise figure of 6.7 dB, and integrated LO phase noise of -38.7 dBc (0.67°). After IQ mismatch calibration, Tx LO leakage and image power are less than -35 dBc. Rx and Tx EVM show 2.2% (-33 dB) at medium RF power (Rx P <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">in</sub> of -60 dBm and Tx EIRP of 0 dBm) with well-fit beam control capability.
Differential aging of the human striatum: longitudinal evidence. (2003)

Although cross-sectional estimates suggested preservation of some striatal nuclei, longitudinal shrinkage of the whole striatum was evident even in a selected group of healthy adults. Moreover, the magnitude of observed longitudinal change was greater than predicted from cross-sectional studies.
Estimation of the area under the ROC curve (2002)

The area under the receiver operating characteristic curve is frequently used as a measure for the effectiveness of diagnostic markers. In this paper we discuss and compare estimation procedures for this area. These are based on (i) the Mann-Whitney statistic; (ii) kernel smoothing; (iii) normal assumptions; (iv) empirical transformations to normality. These are compared in terms of bias and root mean square error in a large variety of situations by means of an extensive simulation study. Overall we find that transforming to normality usually is to be preferred except for bimodal cases where kernel methods can be effective.
Internet security SECRETS (1996)

With the growth of the Internet, there has also been a growth in the numbers of hackers and viruses. This book contains up-to-date security software that aims to keep hackers and viruses out of computer systems.
Parallel implementation of linear prediction model for lossless compression of hyperspectral airborne visible infrared imaging spectrometer images (2005)

We present the implementation of a lossless hyperspectral image compression method for novel parallel environments. The method is an interband version of a linear prediction approach for hyperspectral images. The interband linear prediction method consists of two stages: predictive decorrelation that produces residuals and the entropy coding of the residuals. The compression part is embarrassingly parallel, while the decompression part uses pipelining to parallelize the method. The results and comparisons with other methods are discussed. The speedup of the thread version is almost linear with respect to the number of processors.
A Reference Voltage Interpolation-Based Calibration Method for Flash ADCs (2015)

A 6-bit flash analog-to-digital converter (ADC) using reference-voltage-interpolated calibration to improve linearity and reduce power dissipation is presented. In the ADC, the digital calibration logic employs the successive approximation algorithm and the minimized residue algorithm to determine precise calibration levels. Implemented by a 90-nm CMOS process, the proposed ADC can achieve a signal-to-noise-and-distortion ratio of 36 dB for a low input frequency and 33.5 dB for a Nyquist-rate input frequency at a 2-GS/s sampling rate. The peaks of integral and differential nonlinearities after calibration are 0.36 and 0.42 least significant bit, respectively. The power consumption is 25 mW at 2 GS/s from a 1.2 V supply. The core area is 0.32 mm × 0.62 mm, and the figure of merit is 0.34 pJ/conversion step.
New type of turn insulation for medium-sized, high-voltage electrical machines (1977)

A new type of turn insulation for medium-sized electrical machines is described. The insulating material consists of an aromatic polyamide/mica paper, which is folded longitudinally along the enameled conductor, thereby forming an effective corona shield for the enamel. The main feature of the insulation is its space saving, which may increase the output of a high-voltage machine "by some 15% for a given size, or, alternatively, reduce the manufacturing costs by about 10% for a given power rating. The trade name for the new insulation is MICAFOLD®.
Physical and Thermal Characterization of Chicken Feather Fiber and Crumb Rubber Reformed Epoxy Resin Hybrid Composite (2018)

Abstract In this experimental investigation, the authors have analyzed the physical and thermal behavior of a chicken feather fiber (CFF) and crumb rubber (CR)-filled epoxy hybrid composite. Chicken feathers were treated with sodium hydroxide to improve their interfacial bonding and were taken in different weight percentages of 1, 3, 5, and 7. A fabricated composite with epoxy resin as the host polymer matrix was prepared using the hand layup technique. These composites with 5 wt. % of CFF and varying weight percentages of CR, e.g., 0, 0.5, 1, 1.5, 2, and 2.5, were analyzed. Results showed that for the hybrid composition, the density and percentage of water absorption increased. Thermal analysis predicted the stability of the hybrid composite, and it was concluded that a composite with 1 wt. % of CR and 5 wt. % of CFF showed the optimum results amongst all other combinations. Moreover, the properties showed significant improvement in the case of the hybrid composite as compared to the pure fiber–based composite.
Command Language For Supervisory Control Of Mining Teleoperation (2005)

This paper presents a knowledge-based user interface model system for support of a mining teleoperation. The model makes extensive use of non-verbal sentential structures (NVSS). The NVSS is built with the GURU/sup tm/ expert system and natural a language processing shell. Conceptually, the elements of the NVSS are built around the user intentions which allow knowledge representation about mining tasks as finite state grammars of behavioral as well as task trajectories. A prototype dialogue-based interaction system known as OASIP (Open Architecture for System Interaction Platform) is developed. OASIP is an adaptive system that exploits several sources of environmental knowledge from built-in blackboard cells.
A study on key technologies of unmanned driving (2016)

Although the development of machine intelligence is far from simulating all the cognitive competence of our brains, still it is absolutely possible to peel the driving activity from people's cognitive activities and then make the machine finish some low-level, complicated and lasting driving cognition by simulating our brains. The goal of driving is to replace drivers and free them from boring driving activities. Based on some studies on unmanned driving, this paper summarizes and analyzes the background, significance, research status and key technology of unmanned driving and the research group also introduces some research on brain cognition of driving and sensor placement of intelligent vehicles, which offers more meaningful reference to push the study of unmanned driving.
The Spectrum of Neurologic Disease Associated With Antiphospholipid Antibodies (1987)

Lupus anticoagulants and anticardiolipin antibodies are antiphospholipid immunoglobulins, predominantly of the IgG, IgM, or mixed class. Recently, these antiphospholipid autoantibodies have been associated with neurologic conditions including focal cerebral and ocular ischemia, the myelopathy of lupoid sclerosis and Degos' disease, Guillain-Barré syndrome, migraine, chorea, and seizures. We review the neurologic manifestations associated with this group of antibodies. Recognition of these conditions may lead to further insights into pathogenesis and therapy.
ChemInform Abstract: MECHANISM OF ACTION OF RETINYL COMPOUNDS ON WOUND HEALING PART 3, EFFECT OF RETINOIC ACID HOMOLOGS ON GRANULOMA FORMATION (1973)

Abstract Sechs Homologe (IVb), (VIb), (IXb), (X), (XI) und (XII) der Retininsäure (I), die teils bekannt sind und teils aus Retinin (II) gemäß dem Formelschema synthetisiert werden, werden auf ihre Wirkung auf die Geweberegeneration untersucht, wobei die C22‐Säure (IVb) am effektivsten erscheint.