gebhart/patrepeval huggingface dataset:
Dispersion of Pt Nanoparticle-Doped Reduced Graphene Oxide Using Aniline as a Stabilizer (2012)

In this study, a simple one-step method was developed to load small-sized Pt nanoparticles (3.1 ± 0.3 nm) in large quantities (50 wt %) on aniline-functionalized and reduced graphene oxide (r-fGO). In the process, an ethylene glycol solution and aniline-functionalized moiety play the roles of reducing agent and stabilizer for the Pt nanoparticles, respectively, without damaging the graphite structures of the r-fGO. The Pt nanoparticles loading on the surface of r-fGO with uniform dispersion have a great effect on the electrical conductivity.
Neural architectures for smart memories in analog VLSI (2003)

Some basic issues related to the engineering of smart memory systems for intelligent control are discussed. In particular, it is noted that neurally inspired architectures for MOS analog VLSI implementation of smart memories yield highly regular and dense designs with improved performance and low power consumption. These architectures use MOS transistors in the subthreshold region and current-mode circuits. The neural paradigm not only offers insight into the architectures, but also into the actual implementation details. The bidirectional associative memory, the simplest nonlinear two-layer neural network model with feedback, has been implemented on silicon and tested functionally. Associative recall rates of 100000 vectors/s have been obtained with power consumption of a few milliwatts.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Individual loss distribution measurement in 32-branched PON using pulsed pump-probe Brillouin analysis (2013)

We describe loss distribution measurement in a passive optical network (PON) using pulsed pump-probe Brillouin analysis. A preliminary experiment is demonstrated using a 32-branched PON constructed in the laboratory. We analyze the signal to noise ratio of this measurement and show that the method can realize a 25 dB dynamic range in 90 seconds (10000 times averaging), with an event location resolution of 10 m, and a fiber length identification resolution of 2 m.
Cationic amphiphiles with G-protein-stimulatory activity: studies on the role of the basic domain in the activation process. (1996)

2-Substituted histamines, which are cationic-amphiphilic, activate pertussis toxin-sensitive G-proteins by a receptor-independent mechanism. Lipophilicity is an important determinant for this G-protein activation, but the influence of basicity remained unclear. We prepared four imidazole-containing compounds and nine alkylamines with different basicity and studied their effcts on high-affinity GTP hydrolysis in HL-60 membranes. The substances contained a lipophilic domain (L) and polar (P) and/or cationic (C) domains. Compared to 2-substituted histamines (L-P-C), the corresponding L-C-P type compounds were less potent and effective which, however, were still more active than L-P-P type substances. Among alkylamines, 2-octadecylaminoethyl-N,N-diethylamine (11) was the most potent GTPase activator (pEC50 = 5.7; 100% stimulation above basal). Conversely, 3-(5-hydroxyundecylamino)propylamine (15) was the most efficient compound (pEC50 = 4.3; 160% stimulation above basal). Compared to compounds 11 and 15, which belong to the L-C-C type, the corresponding L-P-C type compounds were less active. Thus, among 2-substituted histamines and alkylamines, a terminal cationic domain is critical for potent and/or effective receptor-independent G-protein activation. An L-C-X structure (X = P or C) is more favorable for G-protein activation than a L-P-X structure. Potency and efficiency of receptor-independent G-protein activators are independently determined drug parameters.
Gene Composer: database software for protein construct design, codon engineering, and gene synthesis (2009)

We present a complete description of Gene Composer functionality, and an efficient PCR-based synthetic gene assembly procedure with mis-match specific endonuclease error correction in combination with PIPE cloning. In a sister manuscript we present data on how Gene Composer designed genes and protein constructs can result in improved protein production for structural studies.
Approximate Structural Matching over Ordered XML Documents (2007)

There is an increasing need for an XML query engine that not only searches for exact matches to a query but also returns query-like structures. We have designed and developed XFinder, an efficient top K tree pattern query evaluation system, which reduces the problem of approximate tree structural matching to a simpler problem of subsequence matching. However, since not all subsequences correspond to valid tree structures, it is expensive to enumerate common subsequences between XML data and query and then filter the invalid ones. XFinder addresses this challenge by detecting and pruning structurally irrelevant subsequence matches as early as possible. Experiments show the efficiency of XFinder on various data and query sets.
Liquid-nitrogen-cooled submillimetre-wave silicon IMPATT diodes (1977)

400 and 300 GHz c.w. oscillation characteristics for liquid-nitrogcn-cooled silicon IMPATT diodes are described. Output powers of 2.2 and 4.5 mW have been obtained at 412 and 295 GHz, respectively, and a highest oscillation frequency of 430 GHz observed.
ONLY THE STRONG (1993)

Competition, consolidation, and couponing have made consumers savvier and brand loyalty shakier. As a result, nurturing the all-important brand demands a new level of creativity and an increased attention to strategy. Often it means a closer look at logos and package design.
CRUISE: using interface hierarchies to support software evolution (1988)

To facilitate the maintenance activity, the author proposes a representation scheme for the structural evolution of software that is based on a notion of hierarchies of interfaces. Such a notion enforces a distinction between design artifacts and implementation artifacts and allows a linkage to be maintained between the two. As the software system evolves, interface alterations can be analyzed to determine whether the linkages are still valid or not. The author believes that such a notion provides a rigorous basis for technical aspects of version control and configuration management.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Transport of Vitamin B <sub>12</sub> in <i>Escherichia coli</i> : Genetic Studies (1973)

The chromosomal location of two genetic loci involved in the transport of cyanocobalamin (B(12)) in Escherichia coli K-12 was determined. One gene, btuA, is believed to code for the transport protein in the cytoplasmic membrane, because a mutant with an alteration in this gene has lost the ability to accumulate B(12) within the cell although normal levels of the surface receptors for B(12) are present. The other locus, btuB, apparently codes for the surface receptor on the outer membrane. These mutants have lost the ability to bind B(12) and have greatly reduced transport activity, although growth experiments have shown that they can utilize B(12) for growth, but with decreased efficiency. This surface receptor for B(12) also appears to function as the receptor for the E colicins, because btuB mutants are resistant to the E colicins, and mutants selected for resistance to colicin E1 are defective in B(12) binding and transport. The gene order was determined by transduction analysis to be cyc-argH-btuA-btuB-rif-purD. In addition, mutations in metH, the gene for the B(12)-dependent homocysteine methylating enzyme, were obtained in this study. This gene was localized between metA and malB.
Voice activity detection system for smart earphones (2014)

This paper presents a real-time voice activity detection (VAD) algorithm implemented in a miniature Digital Signal Processor (DSP) for in-ear listening devices such as earphones or headphones. This system allows consumers to hear external speech signals such as public announcements or oral communication while listening to music without removing their listening devices. The proposed algorithm uses two normalized energy features that compare the energy in the frequency region containing speech information with the frequency regions typically containing noise. The extraction of the normalized features represents the key of the proposed VAD since it eliminates the need for a signal-to-noise ratio (SNR) estimator. The VAD's decision is made using two threshold comparison rules computed from the normalized features and a hangover scheme triggered after a given number of observations. The algorithm parameters, namely the frequency regions' boundaries, number of observations, two decision thresholds and hangover's duration, have been optimized offline using a genetic algorithm. The performance of the proposed VAD is compared to a benchmark algorithm in four noise environments and three SNRs. Results show that the average false positive rate (FPR) of the proposed algorithm is 4.2% and the average true positive rate (TPR) is 91.4 % compared to the benchmark algorithm which has a FPR average of 29.9 % and a TPR average of 79.0 %. The proposed VAD is implemented in hardware to validate its reliability and complexity.
An F factor based cloning system for large DNA fragments (1990)

An effective technique using an Escherichia coli plasmid system was developed to clone fragments of exogenous DNA of as large as 100 kilobase pairs. The characteristic features of this technique are the use of a low copy number (one to two) mini-F based plasmid vector and the introduction of artificial lambda cosR ends into the termini of DNA sources and then of the cosL ends into those of linearized vector molecules. This terminal modification greatly facilitated the formation of active large recombinant molecules, which was rarely achieved when the modification was omitted. The efficiency with which large recombinant clones can be generated is high enough to allow construction of a comprehensive library of higher organisms. All analyses of the plasmids recovered have revealed that the inserts were faithful replicas of the human DNAs used as sources.
A treadmill exercise regimen for identifying cardiovascular phenotypes in transgenic mice (1997)

Cardiovascular stress in response to treadmill exercise is frequently used to detect cardiac abnormalities that are not readily apparent at rest. Herein we describe a treadmill exercise protocol for mice that allows for quantitation of the performance of an animal and the ability to gather metabolic information in a nonrestraining manner using telemetry implant devices. Transgenic (TG) mice overexpressing ventricular myosin regulatory light chain (MLC2v) were subjected to a 5-wk exercise regimen. The TG mice had significant decreases in their capacity for exercise at relatively high treadmill speeds compared with their nontransgenic (NTG) littermates. There was no indication of a hypertrophic response occurring in TG or NTG animals in response to the exercise protocol, and exercise had no effect on MLC2v phosphorylation. Ultrastructural examination of TG atria showed overtly normal myofibrillar organization but a proliferation of the transverse-axial tubular system. This exercise protocol should prove useful in detecting subtle phenotypes that occur in mice as a result of genetic manipulation of the cardiac compartment.
Nickel Base Superalloys Single Crystal Growth Technology for Large Size Buckets in Heavy Duty Gas Turbines (1991)

A larger size bucket with superior high temperature strength is required for future land based gas turbines. From the viewpoint of high temperature mechanical properties, single crystal alloys are rather promising. To grow larger sized single crystals of nickel base superalloys, a two stage heating and bypass process in which single crystal growth paths are incorporated into large cross sectional positions such as platforms has been developed. It results in successful single crystal growth of alloys for buckets with a total length of 170mm and large lateral cross section. Characteristics of single crystal buckets made by the bypass process and properties of an alumina mold prepared for a single crystal casting are described herein.
Adaptive Downlink/Uplink Bandwidth Allocation in IEEE 802.16 (WiMAX) Wireless Networks: A Cross-Layer Approach (2007)

In this paper, we study adaptive bandwidth allocation for uplink and downlink channels in time division duplex (TDD)-based IEEE 802.16 (WiMAX) wireless networks. In a TDD system, uplink and downlink transmissions share the same frequency at different time intervals. The TDD framing can be adaptive in the sense that the downlink to uplink bandwidth ratio can vary with time. For WiMAX channels, we consider the impact of improper bandwidth ratio on the performance of TCP and propose an adaptive bandwidth allocation scheme (ABAS) which adjusts the bandwidth ratio according to the current traffic profile. Our scheme also cooperates with the scheduler to throttle the TCP source when acknowledgements are infrequent. The performance of our mechanism is validated via ns-2 simulations. The results show that our scheme outperforms static allocation in terms of higher aggregate throughput.
Transients in output feedback adaptive systems with observer‐like reference models (2015)

This note presents analysis and quantification of transient dynamics in Model Reference Adaptive Control (MRAC) with output feedback and observer-like reference models. A practical design methodology for this class of systems was first introduced in 1, 2, where an output error feedback was added to the reference model dynamics. Here, this design is complemented with an analysis of the corresponding transients. Specifically, it is shown that employing observer-like reference models in MRAC leads to a trade-off between achieving fast transient dynamics and using large error feedback gains in the modified reference model. For clarity sake, only systems with matched uncertainties are analyzed, yet the reported results can be extended to a broader class of uncertainties by utilizing MRAC modifications for robustness 3, 4. The note ends with a summary of the derived results and a discussion on practical design guidelines for adaptive output feedback controllers with observer-like reference models. Copyright © 2015 John Wiley & Sons, Ltd.
Recent Developments in Yeast Aging (2007)

In the last decade, research into the molecular determinants of aging has progressed rapidly and much of this progress can be attributed to studies in invertebrate eukaryotic model organisms. Of these, single-celled yeast is the least complicated and most amenable to genetic and molecular manipulations. Supporting the use of this organism for aging research, increasing evidence has accumulated that a subset of pathways influencing longevity in yeast are conserved in other eukaryotes, including mammals. Here we briefly outline aging in yeast and describe recent findings that continue to keep this "simple" eukaryote at the forefront of aging research.
Removing noises caused by motion artefacts in microcirculation maps of human skin <i>in vivo</i> (2015)

This paper presents a zero-padding and cross-correlation technique-based correlation mapping optical coherence tomography (ZPCC-cmOCT) to reconstruct microcirculation maps of human skin in vivo, which can remove the background decorrelation noise caused by motion artefacts. In conventional correlation mapping optical coherence tomography method, the correlation degree of static tissue may be lowered by the motion artefacts due to cardiac and respiratory motion, resulting in background decorrelation noise in microcirculation maps. In zero-padding and cross-correlation technique-based correlation mapping optical coherence tomography method, structural images are first obtained by performing Fourier transform on zero-padded interference fringes, and then cross-correlation-based image registration is utilized to align local areas in two adjacent structural images. Finally, correlation mapping optical coherence tomography method is performed to generate microcirculation maps. Both phantom experiments and in vivo experiments were implemented and the results demonstrate that the proposed method is capable of providing microcirculation maps with the background decorrelation noise removed.
The borehole tubewave damper probe (1992)

PreviousNext No AccessSEG Technical Program Expanded Abstracts 1992The borehole tubewave damper probeAuthors: W. Thomas BaloghW. Thomas BaloghHigh Resolution Seismics Inc.https://doi.org/10.1190/1.1822028 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InReddit Permalink: https://doi.org/10.1190/1.1822028FiguresReferencesRelatedDetailsCited byBorehole seismic characterization of a heterogeneous rockInternational Journal of Rock Mechanics and Mining Sciences, Vol. 38, No. 6 SEG Technical Program Expanded Abstracts 1992ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 1992 Pages: 1410 publication data© 1992 Copyright © 1992 Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 10 Feb 2005 CITATION INFORMATION W. Thomas Balogh, (1992), "The borehole tubewave damper probe," SEG Technical Program Expanded Abstracts : 159-162. https://doi.org/10.1190/1.1822028 Plain-Language Summary PDF DownloadLoading ...
Core selection for & design aspects of an integrated-magnetic forward converter (1986)

Core size determination, window area selection and winding methods of an integrated-magnetic switchmofe converter are discussed, using the popular forward topology as a baseline. Alternate winding arrangements are presented for this converter, including two-bobbin approaches. Criteria is developed for rapid projection of weights and volume savings that can be achieved by the user of an integrated-magnetic system in this coverter circuit.
Phase I clinical trial of spirogermanium. (1980)

Spirogermanium is a new azaspirane antitumor agent, with the metal germanium substituted for a one-carbon moiety in the ring structure. This drug inhibits DNA and RNA synthesis in HeLa cells, is cytotoxic in vitro, and has curative in vivo antitumor activity against the ascitic Walker 256 carcinosarcoma in rats. No hematologic toxicity was recorded during the preclinical toxicologic evaluation. The principal clinical toxic effects observed in this phase I trial were neurologic, manifested as lethargy, dizziness, and ataxia, while a grand mal seizure was produced after an accidental overdose. There was no evidence of hematologic, renal, or hepatic toxicity. A partial response was achieved in a patient with a well-differentiated lymphocytic lymphoma. We recommend that phase II trials be conducted with a twice or thrice weekly dose of 50-80 mg/m2, administered in a 30-minute iv infusion.
Amplify-and-Forward Scheme in Cooperative Spatial Multiplexing (2007)

We investigate and propose a new amplify-and-forward cooperative spatial multiplexing scheme in which the transmitter (source), equipped with a single antenna, forms virtual antenna array from a collection of distributed single-antenna wireless terminals, and broadcasts identical signal to those terminals (relays). Each relay amplifies and forwards different portion of the received signal at a reduced data rate to the receiver (destination). The receiver, equipped with multiple antennas, nulls and cancels the interference from different relays in order of the signal-to-noise ratio, and detects the original signal transmitted from the source. The combination of transmitter, relays, and receiver forms a virtual MIMO system in single-antenna wireless terminals environment. Unlike the conventional spatial multiplexing scheme, the proposed scheme does not require multiple antennas at the transmitter side, making it to be particularly useful for uplink (mobile to base-station) data transmissions. It is shown that the performance of the proposed system approaches and, in some cases, surpasses that of the conventional MIMO spatial multiplexing scheme.
Epidemiology of human ancylostomiasis among rural villagers in Nanlin County (Zhongzhou village), Anhui Province, China: age-associated prevalence, intensity and hookworm species identification. (1999)

Hookworm infection has traditionally been highly endemic to Anhui Province, China. Zhongzhou village in southwestern Anhui was identified as an endemic focus of infection caused by the hookworm Ancylostoma duodenale. This species was found to predominate over Necator americanus in ratios ranging from 35:1 based on the recovery of third-stage infective larvae (L,) to 21:1 based on the recovery of adult hookworms after anthelmintic chemotherapy. The overall prevalence of Ancylostoma infection in Zhongzhou was 33.2% with a greater prevalence among males. Unlike the age-associated prevalence patterns for N. americanus in Hainan and other southern Chinese provinces that show increasing prevalence with age and the highest prevalence among the elderly, the age-associated prevalence for A. duodenale in Zhongzhou exhibited a peak in middle-aged adults with subsequent decline. The age-associated intensity pattern exhibited a similar trend although the most of the hookworm infections were light or moderate infections as defined by quantitative egg counts.
Synthesis of carbon nanotube peapods directly on Si substrates (2005)

Carbon nanotubes encapsulating fullerenes, peapods, have been synthesized directly on Si substrates. High-density and high-quality singe-walled carbon nanotubes (SWNTs) were grown on a SiO2∕Si substrate by dip-coating of metal acetate solution and alcohol chemical vapor deposition technique. The caps of SWNTs were opened by annealing in dry air. Then, fullerene doping into the SWNTs was performed by vapor phase doping technique. Encapsulations of C60 and Gd@C82 were confirmed by transmission electron microscopy. Raman scattering spectroscopy was performed for synthesized peapods. From Raman scattering spectroscopy of synthesized peapods, the smallest diameters of the SWNTs capable of fullerene encapsulation were estimated to be 1.28 nm for C60 and 1.43 nm for Gd@C82.
Novel species of <i>Mycosphaerellaceae</i> and <i>Teratosphaeriaceae</i> (2009)

Recent phylogenetic studies based on multi-gene data have provided compelling evidence that the Mycosphaerellaceae and Teratosphaeriaceae represent numerous genera, many of which can be distinguished based on their anamorph morphology. The present study represents the second contribution in a series describing several novel species in different capnodealean genera defined in a previous study. Novelties on Eucalyptus from Australia include: Penidiella pseudotasmaniensis, P. tenuiramis, Phaeothecoidea intermedia, P. minutispora, Pseudocercospora tereticornis, Readeriella angustia, R. eucalyptigena, R. menaiensis, R. pseudocallista, R. tasmanica, Teratosphaeria alboconidia, T. complicata, T. majorizuluensis, T. miniata, T. profusa, Zasmidium aerohyalinosporum and Z. nabiacense, while Teratosphaeria xenocryptica is described on Eucalyptus from Chile. Novelties on other hosts include Phaeophleospora eugeniicola on Eugenia from Brazil, and Zasmidium nocoxi on twig litter from the USA.