gebhart/patrepeval huggingface dataset:
Intelligent multi-mission radar resources management (2008)

Summary form only given. The capabilities of modern military multifunction/multi-mission/multi-role radars cannot be fully realised by using older sensor control strategies, due to the advance in radar technology and the complexity of the tactical environment. The most obvious radar management imperative is the real-time optimisation of radar functionality & radar resource management to meet the changing operational mission, according to an assessment of the current environment conditions and tactical requests from an external centre. The objective of the tutorial is to present: main principles of intelligent radar resources management; strategies for radar time budget regulation; algorithms for: threat assessment, dynamic dwell priority allocation, real-time dwell planning/scheduling, load handling/control,... new advanced tools for radar management simulation on complex scenarios. The tutorial will be illustrated with simulation and campaign results of advanced Thales Multi-function/Mission Radars (e.g. MASTER A radar).
Wide-range BER measurement scheme by estimating BER of discarded frames for 10 G-EPON systems (2011)

This paper describes a new BER measurement method obtaining the BER by estimating the number of error bits in discarded frames using the rate of discarded frames. The BER is obtained precisely by the method.
Interventional catheterization decreases plasma levels of atrial natriuretic peptide (ANP) in children with congenital heart defects (1998)

Atrial natriuretic peptide (ANP) is one of the cardiac peptides implicated in volume and sodium homeostasis. We investigated the effect of interventional catheterization on plasma levels of ANP, aldosterone, and cortisol in 28 children with various congenital heart defects (CHD). Patients were divided by age into two groups: group A--infants and children over 3 months of age (n = 22), and group B--newborns (n = 6). These were compared to age-matched control groups. In group A, interventions included pulmonic valvotomy (n = 8), aortic valvotomy (n = 4), balloon angioplasty of native coarctation of the aorta (n = 3), balloon dilatation of the mitral valve (n = 1), and Rashkind double umbrella closure of patent ductus arteriosus (n = 6). Group B interventions included pulmonic valvotomy (n = 3), aortic valvotomy (n = 1), and balloon atrial septosomy (n = 2). In group A, mean ANP levels were markedly higher than in age-matched controls (125.2+/-15.8 vs. 24.6+/-4.6 pg/ml) (P <0.0001), and decreased immediately after intervention (75.6+/-11.4 pg/ml, P <0.02), and more markedly on follow-up (42.9+/-5.0 pg/ml, P < 0.0001). In group B (newborns), mean basal plasma levels were high before and after intervention and were not different from age-matched controls (243+/-42.1 vs. 220.8+/-16.2 pg/ml). There was a significant decrease on follow-up measurement (62.1+/-12.7 pg/ml, P < 0.005). In both groups, plasma cortisol levels increased significantly immediately following catheterization (P < 0.02), and normalized on follow-up. Basal aldosterone levels were normal in group A and high in Group B (9.9+/-3.8 vs. 167.6+/-16.9 ng/dl) (P < 0.001). It is suggested that plasma ANP levels are increased in children with CHD, without overt heart failure, and decrease significantly following successful intervention. In newborns with CHD, the physiological high ANP levels obscure the effect of the CHD.
Hyperadrenergic states (1991)

Based on knowledge of the pharmacology of sympathomimetic agents and the physiologic consequences of adrenergic receptor stimulation, it is possible to prevent undesirable catecholamine effects and to utilize these agents to achieve desired therapeutic goals.
Piezoelectric tuning fork probe for atomic force microscopy imaging and specific recognition force spectroscopy of an enzyme and its ligand (2013)

Piezoelectric quartz tuning fork has drawn the attention of many researchers for the development of new atomic force microscopy (AFM) self-sensing probes. However, only few works have been done for soft biological materials imaging in air or aqueous conditions. The aim of this work was to demonstrate the efficiency of the AFM tuning fork probe to perform high-resolution imaging of proteins and to study the specific interaction between a ligand and its receptor in aqueous media. Thus, a new kind of self-sensing AFM sensor was introduced to realize imaging and biochemical specific recognition spectroscopy of glucose oxidase enzyme using a new chemical functionalization procedure of the metallic tips based on the electrochemical reduction of diazonium salt. This scanning probe as well as the functionalization strategy proved to be efficient respectively for the topography and force spectroscopy of soft biological materials in buffer conditions.
In vitro generation of three-dimensional functional ovarian structures (2012)

Joo, Sunyoung MD; Sivanandane, Sittadjody PhD; Opara, Emanuel C. PhD; Jackson, John D. PhD; Yoo, James J. MD, PhD; Atala, Anthony MD, FACS Author Information
Structures of atypical chemokine receptor 3 reveal the basis for its promiscuity and signaling bias (2022)

Both CXC chemokine receptor 4 (CXCR4) and atypical chemokine receptor 3 (ACKR3) are activated by the chemokine CXCL12 yet evoke distinct cellular responses. CXCR4 is a canonical G protein-coupled receptor (GPCR), whereas ACKR3 is intrinsically biased for arrestin. The molecular basis for this difference is not understood. Here, we describe cryo-EM structures of ACKR3 in complex with CXCL12, a more potent CXCL12 variant, and a small-molecule agonist. The bound chemokines adopt an unexpected pose relative to those established for CXCR4 and observed in other receptor-chemokine complexes. Along with functional studies, these structures provide insight into the ligand-binding promiscuity of ACKR3, why it fails to couple to G proteins, and its bias toward β-arrestin. The results lay the groundwork for understanding the physiological interplay of ACKR3 with other GPCRs.
Jet properties in PbPb and pp collisions at $$ \sqrt{s_{\mathrm{N}\;\mathrm{N}}}=5.02 $$ TeV (2018)

A bstract Modifications of the properties of jets in PbPb collisions, relative to those in pp collisions, are studied at a nucleon-nucleon center-of-mass energy of $$ \sqrt{s_{\mathrm{N}\;\mathrm{N}}}=5.02 $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:msub> <mml:mi>s</mml:mi> <mml:mrow> <mml:mi>N</mml:mi> <mml:mspace/> <mml:mi>N</mml:mi> </mml:mrow> </mml:msub> </mml:msqrt> <mml:mo>=</mml:mo> <mml:mn>5.02</mml:mn> </mml:math> TeV via correlations of charged particles with the jet axis in relative pseudorapidity (Δ η ), relative azimuth (Δ ϕ ), and relative angular distance from the jet axis $$ \varDelta \mathrm{r}=\sqrt{{\left(\varDelta \eta \right)}^2+{\left(\varDelta \phi \right)}^2} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>Δ</mml:mi> <mml:mi>r</mml:mi> <mml:mo>=</mml:mo> <mml:msqrt> <mml:mrow> <mml:msup> <mml:mfenced> <mml:mrow> <mml:mi>Δ</mml:mi> <mml:mi>η</mml:mi> </mml:mrow> </mml:mfenced> <mml:mn>2</mml:mn> </mml:msup> <mml:mo>+</mml:mo> <mml:msup> <mml:mfenced> <mml:mrow> <mml:mi>Δ</mml:mi> <mml:mi>ϕ</mml:mi> </mml:mrow> </mml:mfenced> <mml:mn>2</mml:mn> </mml:msup> </mml:mrow> </mml:msqrt> </mml:math> . This analysis uses data collected with the CMS detector at the LHC, corresponding to integrated luminosities of 404 μ b −1 and 27.4 pb −1 for PbPb and pp collisions, respectively. Charged particle number densities, jet fragmentation functions, and jet shapes are presented as a function of PbPb collision centrality and charged-particle track transverse momentum, providing a differential description of jet modifications due to interactions with the quark-gluon plasma.
ChemInform Abstract: MACROEXPANSION METHODOLOGY: AN EFFICIENT EIGHT UNIT RING EXPANSION (1981)

Abstract Cyclohexenoxid (I) liefert in der angegebenen Weise den ungesättigten Aldehyd (II), der durch Wittig‐Reaktion, Reduktion und erneute partielle Oxidation zum Dienon (III).
Tips for pure laparoscopic right hepatectomy in the live donor (2017)

Donor right hepatectomy is a technically complex and challenging procedure. It is one of the most debated applications of laparoscopy and donor safety is the main concern. The technique described herein uses pure laparoscopic approach with five trocars. After mobilization of the right liver, the right hepatic artery and portal vein are dissected. The liver parenchyma is then divided using an ultrasonic aspirator and an energy device. The middle hepatic vein is kept intact with the left remaining liver. Intra-operative cholangiography allows to determine a safe site for right bile duct division. When parenchymal section is completed, the right liver graft is taken out in a bag through a Pfannenstiel incision.
A new 1-D colour model and its application to image filtering (2011)

This paper introduces a new 1-D model to encode coloured images for an efficient subsequent processing. This representation is equivalent to, but more compact than, the 3-D HCL conical representation. It consists in gathering all the hue, chroma and luminance information in one component, namely, the cumulative spiral angle, where the spirals in question are defined as a sampling of the solid HCL cone. We use the proposed model for joint bilateral upsampling of low-resolution depth maps. The results show that, in addition to preserving the perceptual properties of the HCL colour representation, using the proposed model leads to a solution that is more accurate than when using grayscale images.
Human Neuroteratocarcinoma Cells as a Neural Progenitor Graft Source for Cell Transplantation in Stroke (2007)

The use of neuroteratocarcinoma cells for transplantation in stroke has emerged as a strategy for cell replacement therapy and has begun its transition from laboratories to clinical settings. Procurement logistics and novel neuroprotective functions associated with these cells allow their use to serve as an efficacious alternative to the use of fetal cells as donor cell grafts for stroke therapy. However, the optimal transplantation regimen must still be determined. Specifically, the limitations of current stroke management reveal an urgent need to examine the efficacy of experimental treatment options, such as neural transplantation, to develop better therapies. This chapter discusses the characteristics of NT2N cells, the role of the host brain microenvironment and NT2N cell grafts, laboratory research and clinical trials for the intracerebral transplantation of NT2N cells in stroke, the mechanisms underlying the grafts’ effects, and NT2N cell grafts and the need for immunosuppression. This chapter also highlights some of the most recent findings regarding NT2N cells.
Combining Asphaltene Science and Downhole Fluid Analysis for Improved Reservoir Characterisation (2013)

Abstract Understanding reservoir complexities such as compartmentalisation and compositional gradients early in the life of a field is crucial for its optimal development. That's especially true for deepwater reservoirs. Deepwater exploration and development has become a key area for most E&amp;P companies because of the increased global demand for oil and gas and the limited accessibility of other potential unexploited resources. Modern wireline formation testers can provide a wide range of downhole rock and fluid properties at in-situ reservoir conditions and can help diagnose deepwater reservoir issues such as compartmentalisation and compositional grading early on. Advanced downhole fluid analysis (DFA) performed by wireline formation testing tools provides real time quantitative measurement of variation in asphaltene content as manifested though fluorescence and fluid coloration. Gas-oil ratio (GOR), another key determinant in asphaltene stability and gradients, is also measured downhole with the DFA technique. Building on recent advances in asphaltene molecular and colloidal physics, a new asphaltene equation of state (EoS) can be used to model asphaltene gradients in crude oils in the same way that a traditional cubic EoS is used for modeling GOR gradients. In this paper, we analyze a deepwater case study showing increases in asphaltenes content with depth due to destabilisation resulting from secondary gas charging at the top of the column and with solid hydrocarbon/tar depositing at the base. These seemingly contradictory observations are shown to follow from a new nanoscience model of asphaltenes. A simple model is proposed for this tar mat formation and consisting of disequilibrium gas charging, large disequilibrium gradients of asphaltene and GOR, asphaltene instability in the oil, and tar in the core. Likely compartmentalisation will also be identified using DFA analysis and verified using lab data analysis, allowing integration into the reservoir modeling process.
Application of the Mars Organic Analyzer to Nucleobase and Amine Biomarker Detection (2006)

The Mars Organic Analyzer (MOA), a portable microfabricated capillary electrophoresis instrument being developed for planetary exploration, is used to analyze a wide variety of fluorescamine-labeled amine-containing biomarker compounds, including amino acids, mono and diaminoalkanes, amino sugars, nucleobases, and nucleobase degradation products. The nucleobases cytosine and adenine, which contain an exocyclic primary amine, were effectively labeled, separated, and detected at concentrations <500 nM. To test the general applicability of the MOA for biomarker detection, amino acids and mono- and diamines were extracted from bacterial cells using both hydrolysis and sublimation followed by analysis. The extrapolated limit of detection provided by the valine biomarker was approximately 4 x 10(3) cells per sample. Products of an NH(4)CN polymerization that simulate a prebiotic synthesis were also successfully isolated via sublimation and analyzed. Adenine and alanine/serine were detected with no additional sample cleanup at 120 +/- 13 microM and 4.1 +/- 1 microM, respectively, corresponding to a reaction yield of 0.04% and 0.0003%, respectively. This study demonstrates that the MOA provides sensitive detection and analysis of low levels of a wide variety of amine-containing organic compounds from both biological and abiotic sources.
ChemInform Abstract: Reactivity of 3‐Methyl‐4‐nitro‐5‐styrylisoxazoles with S‐Nucleophiles. (2011)

Abstract Michael addition of title compounds (I) with benzyl mercaptan (II) proceeds with good yields in the presence of piperidine.
CO-Tolerant, Sulfided Platinum Catalysts for PEMFCs (2004)

Tolerance to small amounts of CO is important for proton exchange membrane fuel cells (PEMFCs) operating on hydrogen obtained by reforming carbon-based fuels. Platinum-based catalysts used today suffer high anode polarization losses, reducing performance and fuel efficiency. Here, findings in the search for CO-tolerant catalysts are reported. Novel platinum-based catalysts were discovered that show low polarization for oxidation of hydrogen containing 104 ppm CO, and little adsorbed CO was observed in CO stripping studies. Platinum in these catalysts is believed to have sulfur in its structure obtained from sodium thiosulfate used in the synthesis of the Pt catalysts. The activity of the catalyst varies with the amount of free platinum surface available, with one catalyst showing better activity than the Pt-Ru catalyst. Sulfur present in the catalysts resulted in redox activity at lower potentials than that shown by adsorbed sulfur on Pt and was stable during cyclic potential sweeps. © 2004 The Electrochemical Society. All rights reserved.
All-Polymer Integrated Optical Resonators by Roll-to-Roll Nanoimprint Lithography (2018)

Polymers are a highly versatile class of materials for micro and nanofabrication. They have been studied for applications in photonics as they can be readily processed, integrated, and doped with a wide range of materials, and can be flexible and stretchable, providing numerous opportunities such as wearable devices and structures with tunable photonic response. Roll-to-roll nanoimprint lithography (R2RNIL) is a method to produce all-polymer devices, which provides the opportunity to target applications where low cost and high throughput are needed most. Here, finite difference time domain simulations are performed to determine the requirements for R2RNIL in order to produce functional photonic integrated circuits. A wide range of nanophotonic devices are fabricated, including waveguides, photonic crystals, diffraction gratings, and ring resonators. Loaded quality factors as high as 57500 are measured in ring resonators at the telecom wavelength range, enabling on-chip high resolution sensors and spectrometers.
22nm STT-MRAM for Reflow and Automotive Uses with High Yield, Reliability, and Magnetic Immunity and with Performance and Shielding Options (2019)

We demonstrate high yield results from a solder-reflow-capable spin-transfer-torque MRAM embedded in 22nm ultra-low leakage (ULL) CMOS technology. The technology supports -40 to 150°C operation and data retention though six solder reflow cycles and far exceeding 10 years at 150°C. Ten year native magnetic field immunity is >1100 Oe at 25°C at the 1ppm bit upset level. A shield-in-package solution demonstrates <; 1ppm bit upset rates from a disc magnet providing 3.5 kOe disturb field exposure for ~80 hours at 25°C. Trading off reflow capability, using smaller CD magnetic tunnel junctions, higher performance is achieved, for example read signal development times of 6ns at 125°C and average write pulse times slightly over 30ns at -40°C in a 20Mb design.
A decomposition method for directional Total Variation with application to needle reconstruction in interventional imaging (2022)

In interventional radiology, 3D reconstruction of devices such as needles would increase the precision of procedures. Doing so with CBCT is time-consuming and increases the X-ray dose. Needles being sparse, a compressed-sensing reconstruction approach seems viable. We thus investigate the interest of directional total variation as an adequate prior for anisotropic devices. We introduce a decomposition method that allows several a priori directions to be considered at once as well as excludes the anatomical background that is not sparse. The capacity of the method is illustrated on simulations of limited-angle acquisitions. It is shown to allow good reconstruction of the needles from a small angular coverage, even if the anatomical background cannot be recovered.
High-speed traveling-wave electroabsorption modulators (2001)

Electroabsorption modulators (EAMs) based on the quantum confined Stark effect in multiple quantum wells (MQWs) have advantages for high-speed, low drive voltage, and high extinction ratio applications. In this paper, a traveling-wave electrode structure is proposed to achieve high bandwidths with long devices and lower drive voltages at 1.55µm wavelength. An InGaAsP/InGaAsP MQW traveling-wave electroabsorption modulator (TWEAM) with a bandwidth above 20 GHz is fabricated. A drive voltage of 1.2 V for an extinction ratio of 20-dB is demonstrated. The effects of microwave transmission on the high-speed performance of TWEAMs are discussed. Successful data transmission experiments at 30 Gbit/s show a promising system performance of these devices. By using an integrated tandem TWEAM, pulse data transmission above 100 Gbit/s is achieved.
Spectroscopy and laser action of Rhodamine 6G doped aluminosilicate xerogels (1990)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSpectroscopy and laser action of Rhodamine 6G doped aluminosilicate xerogelsJohn M. McKiernan, Stacey A. Yamanaka, Bruce. Dunn, and Jeffrey I. ZinkCite this: J. Phys. Chem. 1990, 94, 15, 5652–5654Publication Date (Print):July 1, 1990Publication History Published online1 May 2002Published inissue 1 July 1990https://pubs.acs.org/doi/10.1021/j100378a007https://doi.org/10.1021/j100378a007research-articleACS PublicationsRequest reuse permissionsArticle Views171Altmetric-Citations78LEARN 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 options Get e-Alerts
Growth of Er-doped silicon using metalorganics by plasma-enhanced chemical vapor deposition (1996)

Epitaxial growth of Er-doped silicon films has been performed by plasma-enhanced chemical vapor deposition at low temperature (430 °C) using an electron cyclotron resonance source. The goal was to incorporate an optically active center, erbium surrounded by nitrogen, through the use of the metalorganic compound tris (bis trimethyl silyl amido) erbium. Films were analyzed by Rutherford backscattering spectrometry, secondary ion mass spectroscopy, and high resolution x-ray diffraction. The characteristic 1.54 μm emission was observed by photoluminescence spectroscopy. Previous attempts to incorporate the complex (ErO6) using tris (2,2,6,6-tetramethyl- 3,5-heptanedionato) erbium (III) indicated that excessive carbon contamination lowered epitaxial quality and reduced photoluminescent intensity. In this study, chemical analysis of the films also revealed a large carbon concentration, however, the effect on epitaxial quality was much less destructive. A factorial design experiment was performed whose analysis identified the key processing parameters leading to high quality luminescent films. Hydrogen was found to be a major cause of crystal quality degradation in our metalorganic plasma-enhanced process.
Experimental analysis of the signal-to-noise ratio of digital ISDB-TB TV receivers and multipath in the VHF-high band (2015)

This paper presents an evaluation of the performance of digital TV receivers focusing the parameter signal-to-noise ratio achieved from measurements in laboratory tests and from field tests, and also the multipath data achieved from field tests. The mentioned field tests are a field measurement campaign performed in Brazil aiming the evaluation of ISDB-TB standard digital TV operation in the VHF-high band. From the static measurements of field tests, the parameter signal-to-noise ratio was achieved employing two methodologies, one from direct measurements and the second from noise injection. These results were compared to laboratory tests and to the technical norm of operation in the VHF band. An assessment of the influence of multipath in the digital signal reception and some correlation to the measured signal-to-noise ratio values is also presented.
Front Matter: Volume 6846 (2008)

This PDF file contains the front matter associated with SPIE Proceedings Volume 6846, including the Title Page, Copyright information, Table of Contents, Introduction (if any), and the Conference Committee listing.
Feature-Based Synthesis: Mapping Acoustic and Perceptual Features onto Synthesis Parameters (2006)

Substantial progress has been made recently in finding acoustic features that describe perceptually relevant aspects of sound. This paper presents a general framework for synthesizing audio manifesting arbitrary sets of quantifiable acoustic features of the sort used in music information retrieval and other sound analysis applications. The methods described have broad applications to the synthesis of novel musical timbres, processing by analysisresynthesis, efficient audio coding, generation of psychoacoustic stimuli, and music information retrieval research.