gebhart/patrepeval huggingface dataset:
A Real-Time Region Tracking Algorithm Tailored to Endoscopic Video with\n Open-Source Implementation (2022)

With a video data source, such as multispectral video acquired during\nadministration of fluorescent tracers, extraction of time-resolved data\ntypically requires the compensation of motion. While this can be done manually,\nwhich is arduous, or using off-the-shelf object tracking software, which often\nyields unsatisfactory performance, we present an algorithm which is simple and\nperformant. Most importantly, we provide an open-source implementation, with an\neasy-to-use interface for researchers not inclined to write their own code, as\nwell as Python modules that can be used programmatically.\n
The Protrusion Behaviors in Cu-TSV during Heating and Cooling Process (2018)

The Cu protrusion phenomena and thermal stresses in TSV structures were studied using finite element analysis. When the TSV model was heated from 25°C to 100°C, 200°C, 300°C, 400°C and then cooled down to 25°C, the change of the Cu protrusion height was estimated as a function of annealing temperature. It is concluded from the protrusion height-temperature hysteresis curve that Cu shows a combination of reversible thermal expansion and irreversible plastic deformation which cannot be recovered after annealing the Cu protrusion. The plastic deformation has been found to initiate at the top of the Cu and Si-via interface because of the large mismatch in the coefficients of thermal expansion. The thermally induced plastic flow causes Cu protrusion in the TSV. The simulation and experimental values of Cu protrusion height are respectively 0.93 μm and 1.02 μm at 400°C, showing the validity of the present model.
Theory and experiments on multistep parametric processes in nonlinear optics (2011)

We present a comprehensive model for the description of different types of parametric interactions, associated with simultaneous phase-matching of several optical processes: the so-called multistep parametric interactions. Our approach is based on a recently derived single-wave broadband equation that is able to describe general quadratic nonlinear optical interactions and can be solved with modest computational effort. We compare theoretical results with experiments on simultaneous second- and third-harmonic generation performed in periodically poled lithium tantalate crystals.
Endovascular Repair of Abdominal Aortic Aneurysm Using a Pararenal Fenestrated Stent-Graft (1999)

The use of a fenestrated stent-graft is feasible, but the type of fenestration in this case has limited applicability owing to the rarity of patients with suitable anatomy.
Approche spatialisée en bioclimatologie : méthodes pour le transfert d'échelle (1996)

National audience
Exome Sequencing Finds a Novel <i>PCSK1</i> Mutation in a Child With Generalized Malabsorptive Diarrhea and Diabetes Insipidus (2013)

Whole-exome sequencing provides a powerful diagnostic tool to clinicians managing rare genetic disorders with multiple perplexing clinical manifestations.
The role of surface diffusion of adatoms in the formation of nanowire crystals (2006)

A model of the formation of nanowire crystals on surfaces activated by droplets of the catalyst of growth is developed. In the model, the diffusion of adatoms from the surface of the substrate to the lateral surface of the crystals is taken into account. The exact solution of the diffusion problem for the flow of adatoms from the surface to the nanowire crystals is obtained, and the particular cases of the solution for the short and long diffusion lengths of adatoms, λs, are analyzed. A general expression for the length of the nanowire crystals, L, in relation to their radius R and to the conditions of growth is derived. The expression is applicable to a large variety of technologies of growth. The theoretical results are compared with the experimental dependences L(R) in the range of R = 20–250 nm for GaAs nanowire crystals grown by molecular-beam epitaxy on the GaAs (111) V Ga surface activated by Au. It is shown that, in some range of the parameters, the dependence L(R) follows the function 1/R 2ln(λs/R), which is radically different from the classical diffusion dependence 1/R.
Lineage-Specific Epigenomic and Genomic Activation of Oncogene HNF4A Promotes Gastrointestinal Adenocarcinomas (2020)

Gastrointestinal adenocarcinomas (GIAC) of the tubular gastrointestinal (GI) tract including esophagus, stomach, colon, and rectum comprise most GI cancers and share a spectrum of genomic features. However, the unified epigenomic changes specific to GIAC are poorly characterized. Using 907 GIAC samples from The Cancer Genome Atlas, we applied mathematical algorithms to large-scale DNA methylome and transcriptome profiles to reconstruct transcription factor (TF) networks and identify a list of functionally hyperactive master regulator (MR) TF shared across different GIAC. The top candidate HNF4A exhibited prominent genomic and epigenomic activation in a GIAC-specific manner. A complex interplay between the HNF4A promoter and three distal enhancer elements was coordinated by GIAC-specific MRTF including ELF3, GATA4, GATA6, and KLF5. HNF4A also self-regulated its own promoter and enhancers. Functionally, HNF4A promoted cancer proliferation and survival by transcriptional activation of many downstream targets, including HNF1A and factors of interleukin signaling, in a lineage-specific manner. Overall, our study provides new insights into the GIAC-specific gene regulatory networks and identifies potential therapeutic strategies against these common cancers. SIGNIFICANCE: These findings show that GIAC-specific master regulatory transcription factors control HNF4A via three distal enhancers to promote GIAC cell proliferation and survival. GRAPHICAL ABSTRACT: http://cancerres.aacrjournals.org/content/canres/80/13/2722/F1.large.jpg.
Do autoreactive memory B cells form as a consequence of extrafollicular activation? (130.18) (2007)

Abstract Memory B cells could be responsible for chronic autoimmunity, as suggested by results in SLE patients and SLE-prone mice: The frequency of AM14 RF transgenic B cells fluctuates in the peripheral blood of aged MRL/lpr mice. Activation of RF B cells in autoimmune MRL/lpr mice results in an extrafollicular response that undergoes somatic mutation. Lineage trees of RF clones suggest mutation upon secondary antigen exposure. We recently found that this response can be recapitulated in AM14 Tg mice that were exposed to IgG2a anti-chromatin Abs. The mechanism controlling extrafollicular activation and whether this response leads to a form of memory is unclear. When AM14 heavy chain knock-in B cells are transferred into non-transgenic recipients, followed by exposure to IgG2a anti-chromatin, an extrafollicular response that includes class switch ensues. We are tracking the development and function of these cells over time to determine if autoreactive resting memory B cells form, or alternatively, whether the maintenance of autoreactive B cell clones requires continuous autoantigen exposure and activation. Supported by 1F31AI071694-01 (RAS) and AI36529 (MJS)
A Repeatable and Efficient Canonical Reference for Surface Matching (2012)

The paper investigates on canonical references used for local surface description and matching. We formulate a novel proposal and carry out an extensive experimental evaluation addressing two major surface matching scenarios, namely shape registration and object recognition. We provide also a methodological contribution as, unlike previous work in the field, we propose a repeatability metric that captures the actual impact of the adopted local reference frame algorithm within surface matching tasks based on local 3D descriptors. Our proposal outperforms existing algorithms by a wide margin on several datasets acquired with different devices, such as laser scanners, stereo cameras and the Kinect, and in experiments relying on randomly extracted feature as well as state-of-the art key points.
Superresolving magnetic robotic system for wide-coverage real-time UXO detection (1999)

This paper introduces an advanced robotic system which combines both a sophisticated super resolving detection algorithm and a sate of the art magnetic sensor used for a real time unexploded ordinance detection and mapping.
Spine Update Functional Restoration (1995)

Therapeutics as diverse as surgery, manipulation, and behavior modification can be intended to restore function for people with spinal disorders. However, the term "functional restoration" was coined by Tom Mayer and Vert Mooney to specify interdisciplinary programmatic care geared toward minimizing disability. Functional restoration emphasizes physical and behavioral improvements over pain eradication and relies heavily on guidance from repeated quantification of function. Unlike a comprehensive review, this report is meant to briefly update the reader on selected issues in functional restoration and to suggest directions for future developments.
β-Cyclodextrin-Derived Monolithic, Hierarchically Porous Polyimides Designed for Versatile Molecular Separation Applications (2018)

ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTβ-Cyclodextrin-Derived Monolithic, Hierarchically Porous Polyimides Designed for Versatile Molecular Separation ApplicationsEric E. LeonhardtEric E. LeonhardtDepartment of Chemistry, Department of Chemical Engineering, and Department of Materials Science & Engineering and The Laboratory for Synthetic-Biologic Interactions, Texas A&M University, College Station, Texas 77842-3012, United StatesMore by Eric E. Leonhardt, Mary Ann B. MeadorMary Ann B. MeadorNASA Glenn Research Center, 21000 Brookpark Road, Cleveland, Ohio 44125-3127, United StatesMore by Mary Ann B. Meadorhttp://orcid.org/0000-0003-2513-7372, and Karen L. Wooley*Karen L. WooleyDepartment of Chemistry, Department of Chemical Engineering, and Department of Materials Science & Engineering and The Laboratory for Synthetic-Biologic Interactions, Texas A&M University, College Station, Texas 77842-3012, United States*(K.L.W.) E-mail: [email protected]More by Karen L. Wooleyhttp://orcid.org/0000-0003-4086-384XCite this: Chem. Mater. 2018, 30, 18, 6226–6230Publication Date (Web):September 10, 2018Publication History Received5 July 2018Revised5 September 2018Published online10 September 2018Published inissue 25 September 2018https://pubs.acs.org/doi/10.1021/acs.chemmater.8b02843https://doi.org/10.1021/acs.chemmater.8b02843rapid-communicationACS PublicationsCopyright © 2018 American Chemical SocietyRequest reuse permissionsArticle Views2203Altmetric-Citations18LEARN 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-AlertscloseSupporting Info (1)»Supporting Information Supporting Information SUBJECTS:Adsorption,Macrocyclic compounds,Materials,Oligosaccharides,Polyimides Get e-Alerts
Application of Carbonate Looping to Cement Industry (2012)

In the present work, cycle experiments of different types of limestone, cement raw meal and a mixture of limestone and clay were carried out in laboratory scale setups at more realistic conditions (i.e. calcination temperature is 950°C and CO2 concentration is 80%) to simulate the performance of sorbents in carbonate looping processes. The results show that the CO2 carrying capacity of limestone is much lower at realistic conditions than at mild conditions, which are often used in laboratory experiments. BET and SEM analyses show that the surface area of calcined limestone decreases significantly with an increase in the CO2 partial pressure during calcination, indicating enhancement of sintering by the presence of CO2. As sorbents, cement raw meal and the mixture of limestone and clay show a similar trend as limestone with respect to the decay of the CO2 carrying capacity and this capacity is lower than that of limestone at the same conditions in most cases. SEM and XRD analyses indicate that a combination of severe sintering and formation of calcium silicates attributes to the poor performance of the cement raw meal.
Analysis of photoinduced current transient spectroscopy (PICTS) data by a regularization method (1992)

In order to get information about the deep levels of a semiconductor from photoinduced current transient spectroscopy (PICTS), the thermal relaxation times must be calculated from the time dependence of the photoinduced current. If the deep levels have a bandwidth their contribution to the photoinduced current must be described by a relaxation time spectrum. In this case a regularization method as implemented, for example, in the program FTIKREG should be used for the calculation. The advantages of the regularization method in comparison with the customary two-gate technique are demonstrated by the analysis of simulated and real experimental data. The experimental data have been obtained from a high-resistivity CdTe:Br crystal.
Yttrium aluminum garnet based thermal barrier coatings (2023)

Embodiments of a microstructure that allows arrest of contaminant infiltration includes an inter layer and at least one highly reactive ceramic layer. The inter layer is not reactive to an infiltrating reactive species. The HRC layer includes materials that react with a reactive contaminant species to slow or arrest infiltration of such contaminant species.
Design of a Single Chip, Single Core, ZVS Buck Converter in MHz Domain (2021)

Venturing into MHz switching frequency promotes the integration of inductive DC-DC converter into mobile devices. Combining GaN power switch with low-loss ferrite core materials opens up new possibilities for high-frequency operations. In this work, we investigate the design of a single core inductor and single chip half-bridge switch for ZVS buck converter. Design guidelines are accompanied by preliminary performance assessment via simulations. To demonstrate the performance of our device, we fabricated and tested a 20 W prototype converting 6 - 12 V to 4 V at 2 MHz switching frequency. The prototype achieves η > 90 % at Pout > 15 W and power density of 9.26 W/m <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> with <; 5 mm thickness.
Computational prediction of a two-dimensional semiconductor <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>SnO</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math> with negative Poisson's ratio and tunable magnetism by doping (2020)

Based on first-principles calculations, we predict a stable two-dimensional semiconductor, namely tin dioxide ${\mathrm{SnO}}_{2}$. By investigating its dynamical, thermal, and mechanical properties, we find that ${\mathrm{SnO}}_{2}$ monolayer is an auxetic material with a large in-plane negative Poisson's ratio. Furthermore, our results show that ${\mathrm{SnO}}_{2}$ is an indirect-gap semiconductor with a band gap in the region of 3.7 eV and an extremely high electron mobility, $\ensuremath{\sim}{10}^{3}\phantom{\rule{4pt}{0ex}}{\mathrm{cm}}^{2}\phantom{\rule{0.16em}{0ex}}{\mathrm{V}}^{\ensuremath{-}1}\phantom{\rule{0.16em}{0ex}}{\mathrm{s}}^{\ensuremath{-}1}$. Interestingly, the band structure of ${\mathrm{SnO}}_{2}$ presents double Mexican-hat-like band edges in the valence bands near the Fermi level. Due to such a unique band feature, a ferromagnetic phase transition takes place with a half-metallic ground state that can be induced by hole doping within a very wide concentration range. Such a magnetic phase can be well explained by the Stoner mechanism. A peculiar feature of the magnetic state is the presence of large magnetocrystalline anisotropy that can switch from in-plane to out-of-plane upon hole doping. Hence, ${\mathrm{SnO}}_{2}$ monolayer can be tuned to be either an $XY$ magnet or an Ising one, with a magnetic critical temperature above room temperature at proper hole concentrations. These findings demonstrate that the predicted phase of ${\mathrm{SnO}}_{2}$ is a rare example of $p$-type magnetism and a possible candidate for spintronic applications.
Determination of vitexin and isovitexin in pigeonpea using ultrasonic extraction followed by LC‐MS (2008)

A method based on ultrasonic extraction (USE) followed by LC-MS is presented for the determination of vitexin and isovitexin in pigeonpea extracts in this study. The influential parameters of the USE procedure were optimized, and the optimal conditions were as follows: extraction solvent, 60% ethanol solution; liquid/solid ratio 10:1 (mL/g), extraction power, 250 W; temperature, 40-50 degrees C; and three extraction cycles, each cycle 15 min. Validation of the USE method was performed in terms of repeatability and reproducibility. RSDs for extraction yields were lower than 5.85 and 8.09%, respectively. The LOD and LOQ of chromatographic determination were 0.96 and 3.2 ng/mL for vitexin and 0.84 and 2.8 ng/mL for isovitexin. The method was also successfully applied for the determination of vitexin and isovitexin in stems, leaves, and root extracts of pigeonpea. From all these results, we may conclude that the developed method is appropriate for the quality control of pigeonpea and other plant extract products developed from pigeonpea.
Elliptical x-ray microprobe mirrors by differential deposition (2000)

A differential coating method is described for fabricating high-performance x-ray microfocusing mirrors. With this method, the figure of ultrasmooth spherical mirrors can be modified to produce elliptical surfaces with low roughness and low figure errors. Submicron focusing is demonstrated with prototype mirrors. The differential deposition method creates stiff monolithic mirrors which are compact, robust, and easy to cool and align. Prototype mirrors have demonstrated gains of more than 104 in beam intensity while maintaining submilliradian divergence on the sample. This method of producing elliptical mirrors is well matched to the requirements of an x-ray microdiffraction Kirkpatrick–Baez focusing system.
Risk Factors For Hematogenous Complications of Intravascular Catheter--Associated Staphylococcus aureus Bacteremia (2005)

This investigation identifies 4 host- and pathogen-related risk factors for hematogenous bacterial seeding and reaffirms the importance of prompt catheter removal.
A Novel Force Transducer and Load Cell Design Using "Leaky" Electromagnetic Waves (2004)

Phosphatidylinositol 4,5 bisphosphate (PI4,5P(2)) is a critical second messenger that regulates a myriad of diverse cellular activities including modulation of the actin cytoskeleton, vesicle trafficking, focal adhesion formation, and nuclear events. In order to effectively regulate these disparate cellular events, synthesis of PI4,5P(2) by phosphatidylinositol phosphate kinases (PIP kinases) must be both spatially and temporally regulated. Two subfamilies of PIP kinases, types I and II, allow the generation of PI4,5P(2) from independent pools of substrate, PI(4)P and PI(5)P respectively. In turn, type I and II PIP kinases show different subcellular localization and thus are involved in distinct signaling pathways. Additionally, several type I isoforms, and their splice variants, have now been shown to be differentially localized throughout the cell and to be involved in the synthesis of PI4,5P(2) at distinct sites. These findings implicate PIP kinases as the major regulators of PI4,5P(2)-mediated events, making them key signaling enzymes in a variety of processes. Understanding the mechanisms regulating spatial and temporal synthesis of PI4,5P(2) by PIP kinases is vital for understanding these processes as a whole. This review examines both structural and regulatory features that modulate activity, localization, and substrate usage of PIPKs.
Full Length Research Paper - Prevalence of blaSHV genes in clinical isolates of Klebsiella pneumoniae at Saint Camille medical Center in Ouagadougou. Isolation of blaSHV11-like gene (2004)

Five bacterial strains (4 Klebsiella pneumoniae \t and 1&#13;\nEscherichia coli ) representative of pathogenic species and&#13;\nresistant to β-lactam antibiotics are investigated to isolate the&#13;\ngenes responsible of β-lactamase activity. The use of engineering&#13;\ntechniques enables us to show the widespread of blaSHV genes&#13;\nparticularly in clinical isolates of K. pneumoniae. Our results&#13;\nhighlighted an atypical blaSHV-11 gene.
Divergent reaction pathways for phenol arylation by arynes: synthesis of helicenes and 2-arylphenols (2012)

Two reactions of phenols with arynes have been developed. If LiTMP base is employed, arynes generated from aryl chlorides react with phenols to form helicenes. <i>o</i>-Arylation of phenols can be achieved by employing <i>t</i>BuONa base in the presence of AgOAc. Direct arylation of binol was achieved leading to the shortest pathway to o,o'-diarylbinols.
CFD Simulation and Performance Analysis of CJD Burner for Intensified Flash Smelting Process (2012)

The flash smelting process has been widely acknowledged as a successful modern pyro-metallurgical technology because of its good production flexibility. In past decades, great efforts have been put on the equipment improvement in order to achieve a highly intensive and efficient flash smelting process. However, along with the increasing of the productivity and the intensification of the process, technical problems such as the un-smelted materials accumulated in the settler and the dust generation ratio going higher are found occurring more frequently than before. All these problems however indicate degeneration in the performance of the central jet distributor (CJD) burner. A study was then made on the combustion and reaction processes in the flash furnace equipped with a CJD burner. A steady-state turbulent model was developed and a discrete phase model was included to investigate the velocity and temperature changes of both the gaseous and particle phases in the reaction shaft. The deviation of the numerical model is estimated to be less than 6%. The simulation results reveal a serious delay in the ignition of concentrate particles after they are fed into the furnace. Minor modification was also made by CFD computation, attempting to improve the particle ignition speed, but it was found not so effective. The main reason for the decreased smelting efficiency is found to be the poor mixing between the gaseous and particle phases under the intensified condition. These appeal for a great improvement in the performance of the CJD burner.
Industrial Application and Processes Using Isomerases (2012)

This chapter contains sections titled: Isomerase Processes Syntheses Using Racemases and Epimerases Syntheses Using Intramolecular Oxidoreductases Syntheses Using Mutases Outlook References