gebhart/patrepeval huggingface dataset:
Automatic and simultaneous migration velocity analysis and waveform inversion of real data using a MBTT/WKB J formulation (1995)

PreviousNext No AccessSEG Technical Program Expanded Abstracts 1995Automatic and simultaneous migration velocity analysis and waveform inversion of real data using a MBTT/WKB J formulationAuthors: Rene‐Edouard PlessixYann‐Herve' De RoeckGuy ChaventRene‐Edouard PlessixIFREMER, Yann‐Herve' De RoeckIFREMER, and Guy ChaventINRIA, all Francehttps://doi.org/10.1190/1.1887624 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Permalink: https://doi.org/10.1190/1.1887624FiguresReferencesRelatedDetailsCited ByElastic reflection waveform inversion with variable densityYuanyuan Li, Qiang Guo, Zhenchun Li, and Tariq Alkhalifah27 May 2019 | GEOPHYSICS, Vol. 84, No. 4Datum-based waveform inversion using a subsurface-scattering imaging conditionQiang Guo and Tariq Alkhalifah24 May 2019 | GEOPHYSICS, Vol. 84, No. 4Selective data extension for full-waveform inversion: An efficient solution for cycle skippingZedong Wu and Tariq Alkhalifah23 February 2018 | GEOPHYSICS, Vol. 83, No. 3Elastic reflection-based waveform inversion with a nonlinear approachQiang Guo and Tariq Alkhalifah16 October 2017 | GEOPHYSICS, Vol. 82, No. 6Elastic reflection waveform inversion with variable densityYuanyuan Li, Zhenchun Li, Tariq Alkhalifah, and Qiang Guo17 August 2017Extension of migration velocity analysis to transmitted wavefields16 August 2016 | Geophysical Journal International, Vol. 207, No. 1A nonlinear approach of elastic reflection waveform inversionQiang Guo and Tariq Alkhalifah1 September 2016Full-waveform inversion with reflected waves for 2D VTI mediaSonali Pattnaik, Ilya Tsvankin, Hui Wang, and Tariq Alkhalifah1 September 2016Full-model wavenumber inversion: An emphasis on the appropriate wavenumber continuationTariq Alkhalifah6 April 2016 | GEOPHYSICS, Vol. 81, No. 3The natural combination of full and image-based waveform inversion15 June 2015 | Geophysical Prospecting, Vol. 64, No. 1Simultaneous inversion of the background velocity and the perturbation in full-waveform inversionZedong Wu and Tariq Alkhalifah2 September 2015 | GEOPHYSICS, Vol. 80, No. 6Velocity macro-model estimation from seismic reflection data by stereotomographyGeophysical Journal International, Vol. 135, No. 2 SEG Technical Program Expanded Abstracts 1995ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 1995 Pages: 1566 publication data© 1995 Copyright © 1995 Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished: 10 Feb 2005 CITATION INFORMATION Rene‐Edouard Plessix, Yann‐Herve' De Roeck, and Guy Chavent, (1995), "Automatic and simultaneous migration velocity analysis and waveform inversion of real data using a MBTT/WKB J formulation," SEG Technical Program Expanded Abstracts : 1099-1102. https://doi.org/10.1190/1.1887624 Plain-Language Summary PDF DownloadLoading ...
Direct identification of microorganisms from positive blood cultures using the lysis-filtration technique and matrix assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS): a multicentre study. (2015)

Microbial identification from blood cultures is essential to institute optimal antibiotic therapy and improve survival possibilities. Matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) has been successfully applied to identify bacteria and yeasts from positive blood cultures broths. The aim of this multicentre study was to evaluate the reliability of the lysis-filtration technique associated with MALDI-TOF MS to directly identify microorganisms from 765 positive blood cultures collected in six Italian hospitals. Overall, 675/765 (78.1%) blood isolates were correctly identified at the species level, with significant differences between Gram-negative and Gram-positive bacteria (92.6%, and 69.8%, respectively). Some difficulties arise in identifying Streptococcus pneumoniae, Staphylococcus aureus, yeasts and anaerobes. The lysis-filtration protocol is a suitable procedure in terms of performance in identifying microorganisms, but it is quite expensive and technically time-consuming since the time of filtration is not regular for all the samples. The application of the MALDI-TOF MS technique to the direct microbial identification from positive blood cultures is a very promising approach, even if more experience must be gained to minimize errors and costs.
STUDY OF PYRIMIDINE DIMERS IN MAMMALIAN CELLS SURVIVING LOW DOSES OF ULTRAVIOLET RADIATION* (1967)

Abstract— Ultraviolet‐induced pyrimidine dimers were not found to be excided from the DNA of Chinese hamster cells in small oligounucleotides. At doses whereby many cells survive the radiation, the dimers were still associates with the large polynucleotides even after 48 hr of postirradiation incubation.
Is VLSI neural learning robust against circuit limitations? (2002)

An investigation is made of the tolerance of various in-circuit learning algorithms to component imprecision and other circuit limitations in artificial neural networks. Supervised learning mechanisms including backpropagation and contrastive Hebbian leaning, and unsupervised soft competitive learning are all shown to be tolerant of those levels of arithmetic inaccuracy, noise, nonlinearity, weight decay, and statistical variation from fabrication that the authors have experienced in 1.2 /spl mu/m analog CMOS circuits employing Gilbert multipliers as the primary computational element. These learning circuits also function properly in the presence of offset errors in analog multipliers and adders, provided that the computed weight updates are constrained by the circuitry to be made only when they exceed certain minimum or threshold values. These results are also relevant for compact (low bit rate) digital implementations.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Gastrointestinal safety of low-dose aspirin. (2002)

The cardioprotective benefits of aspirin support the use of low-dose regimens for primary and secondary prevention of cardiovascular disease. However, these cardioprotective benefits must often be balanced against the well-documented gastrointestinal (GI) effects of aspirin. Recent research suggests that the GI effects of aspirin may be dose-dependent; however, even low-dose aspirin can cause significant GI sequelae. Similarly, the use of nonaspirin nonsteroidal antiinflammatory drugs (NSAIDs), including cyclooxygenase (COX)-2 inhibitors, has also been shown to increase the risk of GI effects, and the concomitant use of aspirin and nonaspirin NSAIDs can significantly increase the risk of GI ulceration and bleeding. Therefore, clinicians should use the lowest effective dose of aspirin (ie, 75 to 150 mg/day) that affords cardiovascular benefits without increasing the risk of GI effects. Low-dose aspirin therapy can complicate the concurrent use of analgesics. When an analgesic is needed in addition to aspirin, concomitant use of aspirin and nonaspirin NSAIDs or COX-2 inhibitors should be used with caution, or with concomitant gastroprotective agents, to minimize the risk of GI complications. In contrast, because acetaminophen does not cause GI irritation, it should therefore be considered when an analgesic is needed.
Metchnikowin, a Novel Immune‐Inducible Proline‐Rich Peptide from Drosophila with Antibacterial and Antifungal Properties (1995)

One of the characteristics of the host defense of higher insects is the rapid and transient synthesis of a variety of potent antimicrobial peptides. To date, several distinct inducible antimicrobial peptides or peptide families have been totally or partially characterized. We present here the isolation and characterization of a novel 26‐residue proline‐rich immune‐inducible peptide from Drosophila , which exhibits both antibacterial (Gram‐positive) and antifungal activities. Peptide sequencing and cDNA cloning indicate the presense of two isoforms in our Drosophila Oregon R strain, which differ by one residue (His compared to Arg) as a consequence of a single nucleotide change. The gene, which maps in position 52A1‐2 on the right arm of the second chromosome, is expressed in the fat body after immune challenge. The novel peptide, which we propose to name metchnikowin, is a member of a family of proline‐rich peptides, and we discuss the possible evolutionary relationships within this family.
The Effects of a Water Spray Cooling System During Real Scale Halon 1301 Replacement Testing on Post Fire Suppression Compartment Reclamation. (1997)

Abstract : Real scale tests were conducted aboard me ex-USS SHADWELL with HFP with limited baseline comparison tests with Halon 1301. Two of the objectives of the full scale machinery space testing were to determine the optimum post fire suppression hold time (time prior to venting) and to evaluate the option of using a water spray cooling system (WSCS) to reduce compartment temperature and acid decomposition products and therefore expedite compartment reclamation. Results show that the WSCS system employed is a viable option for rapid reduction of compartment temperature. The low water pressure WSCS tested provided very rapid compartment temperature reduction in 15 seconds with less than 20 gallons of water.
Turn-off length and lateral field in the p-base layer of a GTO thyristor (1985)

The turn off of a GTO is studied by measuring the infrared radiation. It is shown that the turn-off region length is determined by the balance of the diffusion current from the ON region and the drift current against it, and the lateral field in the p-base has a role in determining the turn-off of a GTO.
Diabetes Eye Screening in Urban Settings Serving Minority Populations (2014)

In a DR telemedicine screening program in urban clinic or pharmacy settings in the United States serving predominantly ethnic/racial minority populations, DR was identified on screening in approximately 1 in 5 persons with diabetes. The vast majority of DR was background, indicating high public health potential for intervention in the earliest phases of DR when treatment can prevent vision loss. Other ocular conditions were detected at a high rate, a collateral benefit of DR screening programs that may be underappreciated.
OC10.06: Breaking bad news due to fetal abnormalities during prenatal ultrasound examination: can simulation training be done? (2019)

Breaking bad news (BBN) to a pregnant woman with fetal abnormalities on ultrasound (US) examination is a growing challenge. The way patients receive and deal with BBN is directly influenced by how the news is communicated. Physicians receive little or no training in BBN. Simulation training and SPIKES protocol are tools for teaching it. The objective of our study was to create and evaluate simulation scenarii of BBN for fetal abnormalities discovered during US examination. We also evaluate the usefulness of using SPIKE protocol in this situation. In Simulation laboratory, we associated US simulator (US Mentor, Symbionixâ) with simulated patient (SP) portraying the mother. We created 2 scenarii of BBN for fetal abnormalities discovered (hydrocephalus and cleft lip). Scenarii objectives was to perform US examination, diagnose fetal abnormalities and break it to SP. Thanks to video recording, two investigators fulfilled checklist derived from SPIKES protocol. After simulation, SP rated another checklist derived from SPIKES. We included resident, physician and fetal medicine specialists (FMS). After simulation, each of them fulfilled questionnaires about their proper feeling during fetal US and breaking BN as well and the usefulness of this type of simulation. We included 9 physicians (3 residents, 4 physicians and 2 FMS). 18 scenarii had be completed. 75 % of physician thought simulation was like real situation of BBN during US examination. Majority of participant (89%) found that this type of simulation training could help them to increase their ability to announce bad news and that it can be used to teach resident (89%) but although physician (100%). For investigators, FMS had better SPIKES checklist than physician (p = 0,004). Simulation training in BBN on US examination can be done combining US simulator and SP and can help increase knowledge and ability about BBN. SPIKES protocol can be useful but a validated checklist should be created for this type of BBN.
Effect of Axial Substitution on the Optical Limiting Properties of Indium Phthalocyanines (2000)

Nonlinear absorption, refraction, and optical limiting by a series of monoaxially chloro- and aryl-substituted indium(III) phthalocyanines are described. The absorption cross sections and temporal evolution of the low-lying excited states are also reported. A large nonlinear absorption that increased with wavelength between 500 and 590 nm was observed in each material. The nanosecond nonlinear absorption and the optical limiting are shown to be dominated by a strong excited state absorption from an orientationally averaged triplet state. We derive and experimentally confirm the relation between the molecular absorption cross sections and the fluence-dependent nonlinear absorption coefficients. The effective nonlinear refraction on the nanosecond time scale was reduced because the electronic contribution to the nonlinear refractive index was of the opposite sign from the thermal contribution. An optical limiter using the new material, p-(trifluoromethyl)phenylindium(III) tetra-tert-butylphthalocyanine [(t-Bu)4PcIn(p-TMP)], showed a much lower threshold for optical limiting and a much lower transmission at high fluences than previously reported indium phthalocyanine limiters. This improved optical limiting was due both to the larger nonlinear absorption coefficient and to the design of the limiter device. The optical properties of the In phthalocyanine moiety were found to be surprisingly robust to structural changes in the axial position.
Study of inclusive J/ψ production in two-photon collisions at LEP II with the DELPHI detector (2003)

Inclusive J/ψ production in photon–photon collisions has been observed at LEP II beam energies. A clear signal from the reaction γγ→J/ψ+X is seen. The number of observed N(J/ψ→μ+μ−) events is 36±7 for an integrated luminosity of 617 pb−1, yielding a cross-section of σ(J/ψ+X)=45±9(stat)±17(syst) pb. Based on a study of the event shapes of different types of γγ processes in the PYTHIA program, we conclude that (74±22)% of the observed J/ψ events are due to ‘resolved’ photons, the dominant contribution of which is most probably due to the gluon content of the photon.
An overview and management of osteoporosis (2016)

Osteoporosis -related to various factors including menopause and aging- is the most common chronic metabolic bone disease, which is characterized by increased bone fragility. Although it is seen in all age groups, gender, and races, it is more common in Caucasians (white race), older people, and women. With an aging population and longer life span, osteoporosis is increasingly becoming a global epidemic. Currently, it has been estimated that more than 200 million people are suffering from osteoporosis. According to recent statistics from the International Osteoporosis Foundation, worldwide, 1 in 3 women over the age of 50 years and 1 in 5 men will experience osteoporotic fractures in their lifetime. Every fracture is a sign of another impending one. Osteoporosis has no clinical manifestations until there is a fracture. Fractures cause important morbidity; in men, in particular, they can cause mortality. Moreover, osteoporosis results in a decreased quality of life, increased disability-adjusted life span, and big financial burden to health insurance systems of countries that are responsible for the care of such patients. With an early diagnosis of this disease before fractures occur and by assessing the bone mineral density and with early treatment, osteoporosis can be prevented. Therefore, increasing awareness among doctors, which, in turn, facilitates increase awareness of the normal populace, will be effective in preventing this epidemic.
Normal-Metal–Insulator–Superconductor Tunnel Junction With Atomic-Layer-Deposited Titanium Nitride as Superconductor (2014)

We report the fabrication of 70-350-nm-thick superconducting titanium nitride (TiN <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">x</sub> ) films using the atomic layer deposition (ALD) technique and the subsequent fabrication of normal metal-insulator-superconductor (NIS) tunnel junction devices from the ALD films. The films were deposited on a variety of substrates: silicon, silicon nitride, sapphire, and magnesium oxide. Superconductivity, with transition temperatures (T <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">C</sub> ) ranging from 1.35 to 1.89 K, was observed in all films. TC was found to depend on both the substrate type as well as film thickness. Cu-TiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">x</sub> -TiN <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">x</sub> NIS tunnel junction devices were fabricated from the TiN film deposited on silicon, using electron beam lithography and shadow angle evaporation techniques. These devices exhibit temperature-dependent current-voltage characteristics and good thermometric response from 0.1 K to slightly above T <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">C</sub> . Nonlinearity in the current-voltage characteristics was observed even at temperatures as high as 5T <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">C</sub> , indicating the presence of a pseudogap in these TiNx films.
Automating the identification of DNA variations using quality-based fluorescence re-sequencing: analysis of the human mitochondrial genome (1998)

Diagnostic re-sequencing plays a central role in medical and evolutionary genetics. In this report we describe a process that applies fluorescence-based re-sequencing and an integrated set of analysis tools to automate and simplify the identification of DNA variations using the human mitochondrial genome as a model system. Two programs used in genome sequence analysis (Phred, a base-caller, and Phrap, a sequence assembler) are applied to assess the quality of each base call across the sequence. Potential DNA variants are automatically identified and 'tagged' by comparing the assembled sequence with a reference sequence. We also show that employing the Consed program to display a set of highly annotated reference sequences greatly simplifies data analysis by providing a visual database containing information on the location of the PCR primers, coding and regulatory sequences and previously known DNA variants. Among the 12 genomes sequenced 378 variants including 29 new variants were identified along with two heteroplasmic sites, automatically detected by the PolyPhred program. Overall we document the ease and speed of performing high quality and accurate fluorescence-based re-sequencing on long tracts of DNA as well as the application of new approaches to automatically find and view DNA variants among these sequences.
Prevention of nephrolithiasis by an extract of Ammi visnaga L. in stone forming rats (2008)

Hyperoxaluria is a major risk factor for renal stones [1]. Although effective treatments have been developed to remove kidney stones with minimum renal damage, the treatment of chronic stone occurrence remains frustrating [2]. The aim of this study was to evaluate whether oral administration of an aqueous extract prepared from the seeds of Ammi visnaga L. (Khella; Apiaceae) could prevent urolithiasis in stone-forming rats. Hyperoxaluria was induced in male Sprague-Dawley rats by giving 0.75% ethylene glycol (EG) and 1% NH4Cl via the drinking water. The Khella extract (KE; 125, 250 or 500mg/kg) was orally administered for 14 days. Rats were sacrificed after 2 weeks and kidneys were harvested for the histopathological assay of crystal formation. 24h urine samples were collected before the animals were sacrificed. The histopathology examination of the kidneys revealed that KE significantly reduced the incidence of calcium oxalate deposition (Crystal deposition scale, Control (Untreated): 0±0, EG: 3.13±1.23, KE 125mg/kg: 1.63±1.19, KE 250mg/kg: 1.86±0.83, and KE 500mg/kg: 1.25±0.71). In addition, KE significantly increased urinary excretion of citrate (Control: 1.38±0.27mg/day, EG: 1.10±0.21mg/day, KE 125mg/kg: 4.0±0.67mg/day, KE 250mg/kg: 4.02±0.34mg/day, and KE 500mg/kg: 5.85±2.45mg/day) along with a decrease of oxalate excretion (Control: 0.45±0.05mg/day, EG: 1.01±0.34mg/day, KE 125mg/kg: 0.80±0.34mg/day, KE 250mg/kg: 0.58±0.22mg/day, and KE 500mg/kg: 0.57±0.15mg/day). In addition, KE increased the urine pH (Control: 6.03±0.11, EG: 5.64±0.1, KE 125mg/kg: 5.84±0.17, KE 250mg/kg: 5.91±0.18, and KE 500mg/kg: 6.05±0.15) in a dose dependent manner. In summary, a reasonably good correlation was obtained between the incidence of crystal deposition and the increase in urine pH. Our data suggest that KE may be used as a potential therapeutic strategy in the prevention of kidney stones caused by hyperoxaluria.
Subpixel Accuracy Analysis Of Phase Correlation Registration Methods Applied To Aliased Imagery (2008)

Publication in the conference proceedings of EUSIPCO, Lausanne, Switzerland, 2008
Evaluation of New Zealand electricity generation expansion in meeting dry year demands (2011)

After the commencement of the New Zealand Electricity Market (NZEM) in October 1996, generation expansion was made based on the wholesale electricity prices rather than through coordinated government planning. Since then, the installed generation capacity in New Zealand has been observed to follow a bust and boom pattern, resulting in energy shortages during dry winter years. A System Dynamics (SD) model has been developed to study the bust and boom trend. The model is then extended to evaluate whether the generation expansion proposed by the 2008 Statement of Opportunity (SOO2008) will be able to meet future dry winter year demands under the current market mechanism. The evaluation takes into account New Zealand's main storage lake cycles and the El Niño-La Niña Southern Oscillation (ENSO) phenomenon. The evaluation shows New Zealand is likely to face future energy shortages during dry years unless mitigation actions are taken.
Self-Assembly of Low-Dimensional Arrays of Thiophene Oligomers from Solution on Solid Substrates (2000)

Bis-urea-oligothiophene (U2Tn) molecules are promising candidates for the construction of 1D semiconducting channels because of their strong tendency to self-aggregate in solution into elongated 1D arrays. Here is reported the self-assembly of low-dimensional aggregates of U2Tn molecules onto several substrates (the Figure shows aggregation into directed fibers on a silica surface).