gebhart/patrepeval huggingface dataset:
Texture Evolution in Ni Substrate Prepared by Powder Metallurgy and Casting Methods (2007)

Cube textured Ni substrate were fabricated for YBCO coated conductors from the initial specimens prepared by powder metallurgy (P/M) and casting and the effects of annealing temperature and reduction ratio on texture formation and microstructural evolutio were evaluated. The initial specimens were rolled by 98.6% and 99.2% reduction ratio and then annealed in the temperature range of 600°C to 1200°C. The microstructure and texture were evaluated by optical microscopy and X-ray pole-figure analysis. We observed that microstructure of the initial specimen varied with preparation methods.Texture analysis indicated that a strong cube texture formed for substrate made by P/M, and the degree of texture did not significantly vary with annealing temperature of 600°C~1100°C. On the other hand, the texture of substrate made by casting was more dependent on the annealing temperature and twin texture ({221}&lt;221&gt;) and several minor texture components started to form at 1000°C. In addition, the texture of substrate made by P/M was significantly dependent on the reduction ratio.
Tuning the Magnetic Properties of Nanoparticles (2013)

The tremendous interest in magnetic nanoparticles (MNPs) is reflected in published research that ranges from novel methods of synthesis of unique nanoparticle shapes and composite structures to a large number of MNP characterization techniques, and finally to their use in many biomedical and nanotechnology-based applications. The knowledge gained from this vast body of research can be made more useful if we organize the associated results to correlate key magnetic properties with the parameters that influence them. Tuning these properties of MNPs will allow us to tailor nanoparticles for specific applications, thus increasing their effectiveness. The complex magnetic behavior exhibited by MNPs is governed by many factors; these factors can either improve or adversely affect the desired magnetic properties. In this report, we have outlined a matrix of parameters that can be varied to tune the magnetic properties of nanoparticles. For practical utility, this review focuses on the effect of size, shape, composition, and shell-core structure on saturation magnetization, coercivity, blocking temperature, and relaxation time.
Cryo-SEM Study of Liquid Crystals in a Thiol-ene Polymer (2007)

Extract Extended abstract of a paper presented at Microscopy and Microanalysis 2007 in Ft. Lauderdale, Florida, USA, August 5 – August 9, 2007
MINIATURE RADIATION DOSIMETER FOR IN-VIVO RADIATION MEASUREMENTS (1986)

We have made initial characterization measurements on a miniature radiation dosimeter which can be used for in vivo radiation measurements. It consists of a radiation sensing field effect transistor (RADFET) mounted in a 0.8 mm OD plastic catheter. The RADFET acts as a dosimeter by storing trapped charge proportional to absorbed dose. The stored charge signal can be differentiated to give dose rate. We report on the techniques for mounting, a circuit for dose readout, drift of the readings, linearity of response, temperature and angular dependence, and unpowered operation of the device.
Ribonucleotide incorporation in yeast genomic DNA shows preference for cytosine and guanosine preceded by deoxyadenosine (2020)

Despite the abundance of ribonucleoside monophosphates (rNMPs) in DNA, sites of rNMP incorporation remain poorly characterized. Here, by using ribose-seq and Ribose-Map techniques, we built and analyzed high-throughput sequencing libraries of rNMPs derived from mitochondrial and nuclear DNA of budding and fission yeast. We reveal both common and unique features of rNMP sites among yeast species and strains, and between wild type and different ribonuclease H-mutant genotypes. We demonstrate that the rNMPs are not randomly incorporated in DNA. We highlight signatures and patterns of rNMPs, including sites within trinucleotide-repeat tracts. Our results uncover that the deoxyribonucleotide immediately upstream of the rNMPs has a strong influence on rNMP distribution, suggesting a mechanism of rNMP accommodation by DNA polymerases as a driving force of rNMP incorporation. Consistently, we find deoxyadenosine upstream from the most abundant genomic rCMPs and rGMPs. This study establishes a framework to better understand mechanisms of rNMP incorporation in DNA.
ChemInform Abstract: ISOLATION OF STABLE SECONDARY CATIONIC IRON CARBENE COMPLEXES DICARBONYL(η5‐CYCLOPENTADIENYL)PHENYLCARBENEIRON HEXAFLUOROPHOSPHATE AND CARBONYL(η5‐CYCLOPENTADIENYL)TRIPHENYLPHOSPHINE(PHENYLCARBENE)IRON HEXAFLUOROPHOSPHATE (1977)

Abstract Die Behandlung der α‐Methoxybenzyl‐Fe‐Komplexe (I) mit den aufgeführten Säuren bei Temperaturen unter ‐10°C führt zu den als stabile Hexafluorophosphat‐Salze isolierbaren, kationi‐ 137 schen Benzyliden‐Komplexen (II), die NMR‐spektroskopisch charakterisiert werden.
Vibration Analysis of Rotor-Bearing Systems With Internal Damping and Torsional Effects (1999)

Abstract This paper extends the model of the linearly tapered Timoshenko shaft finite element developed by the authors to include the effect of internal viscous and hysteretic damping. The resulting model accounts, in addition to internal damping, for bending, rotary inertia, gyroscopic moments, transverse shear deformations and torsion. The developed model has been programmed in a fairly general way to be applicable to a general rotor-bearing system where both anisotropic bearings and internal damping are present. Numerical results of modal characteristics as well as dynamic responses are generated.
On nonlinear distortions of highly dispersive optical coherent systems (2012)

We investigate via experiments and simulations the statistical properties and the accumulation of nonlinear transmission impairments in coherent systems without optical dispersion compensation. We experimentally show that signal distortion due to Kerr nonlinearity can be modeled as additive Gaussian noise, and we demonstrate that its variance has a supra-linear dependence on propagation distance for 100 Gb/s transmissions over both low dispersion and standard single mode fiber. We propose a simple empirical model to account for linear and nonlinear noise accumulation, and to predict system performance for a wide range of distances, signal powers and optical noise levels.
A Reconfiguration Manager for Dynamically Reconfigurable Hardware (2005)

Dynamic reconfiguration has been a technology solution in search of the right problem to solve. Effective use of the technology requires new programming and task management models. This article describes an approach to dynamic reconfiguration that reduces reconfiguration latency to the point where dynamic multimedia applications can now exploit such platforms.
CIVA Computed Tomography Modeling (2012)

A new X-Ray computed tomography (CT) simulation module has recently been integrated into the CIVA software which completes the already available UT, ET and RT modules. The X-ray simulation software CIVA has been developed to help the design stage of radiographic systems, to enable performance demonstration and to optimize the testing process [1], [2]. In this context and to enlarge the capabilities of CIVA, the new computed tomography module is based on the RT module and takes benefit off all the tools already available in it. In this paper, we present an overview of the functionalities available in the CIVA CT module, with a description of the different reconstruction algorithms already implemented in CIVA. This paper also illustrates a validation procedure of the X-ray RT module and proposes a typical application case.
Physically-based Deformation of High-Resolution 3D Lung Models for Augmented Reality based Medical Visualization (2004)

Visualization tools using Augmented Reality Environments are effective in applications related to medical training, prognosis and expert interaction. Such medical visualization tools can also provide key visual insights on the physiology of deformable anatomical organs (e.g. lungs). In this paper we propose a deformation method that facilitates physically-based elastostatic deformations of 3D high-resolution polygonal models. The implementation of the deformation method as a pre-computation approach is shown for a 3D high-resolution lung model. The deformation is represented as an integration of the applied force and the local elastic property assigned to the 3D lung model. The proposed deformation method shows faster convergence to equilibrium as compared to other physically-based simulation methods. The proposed method also accounts for the anisotropic tissue elastic properties. The transfer functions are formulated in such a way that they overcome stiffness effects during deformations.
Percutaneous Coronary Intervention in the Current Era Compared With 1985–1986 (2000)

Although Dynamic Registry patients had more unstable and complex coronary disease than those in the 1985-1986 Registry, their rate of procedural success was higher whereas rates of complications and subsequent CABG were lower. Results of percutaneous coronary intervention have improved substantially over the past decade.
Molecular sensing: modulating molecular conduction through intermolecular interactions (2013)

We observe changes in the molecular conductivity of individual oligophenylene-vinylene (OPV) molecules due to interactions with small aromatic molecules. Fluorescence experiments were correlated with scanning tunneling microscopy measurements in order to determine the origin of the observed effect. Both nitrobenzene and 1,4-dinitrobenzene decreased fluorescence intensity and molecular conductivity, while toluene had no effect. The observed changes in the fluorescence and conduction of OPV correlate well with the electron withdrawing ability of the interacting aromatic molecules. These results demonstrate the potential usefulness of OPV as a sensor for aromatic compounds containing electron withdrawing groups.
Methods of epsilon-near-zero optical modulation (2023)

A method of optical modulation in a non-resonant epsilon-near-zero (EMZ) plasmonic electro-optical modulator is provided. An optical carrier is injected into a waveguide optically coupled to a layer of transparent conductive material having an epsilon-near-zero (ENZ) wavelength. The transparent conductive material layer constitutes a portion of a capacitive structure that includes a gate dielectric layer. A time-varying bias voltage applied across the gate dielectric layer shifts the ENZ wavelength toward the carrier wavelength, and thereby impresses a phase modulation pattern on the carrier wave.
Joint Transmit Beamforming for Multiuser MIMO Communications and MIMO Radar (2020)

Future wireless communication systems are expected to explore spectral bands typically used by radar systems, in order to overcome spectrum congestion of traditional communication bands. Since in many applications radar and communication share the same platform, spectrum sharing can be facilitated by joint design as a dual-function radar-communications system. In this paper, we propose a joint transmit beamforming model for a dual-function multiple-input-multiple-output (MIMO) radar and multiuser MIMO communication transmitter. The proposed dual-function system transmits the weighted sum of independent radar waveforms and communication symbols, forming multiple beams towards the radar targets and the communication receivers, respectively. The design of the weighting coefficients is formulated as an optimization problem whose objective is the performance of the MIMO radar transmit beamforming, while guaranteeing that the signal-to-interference-plus-noise ratio (SINR) at each communication user is higher than a given threshold. Despite the non-convexity of the proposed optimization problem, we prove that it can be relaxed into a convex one, where the relaxation is tight. We then propose a reduced complexity design based on zero-forcing the inter-user interference and radar interference. Unlike previous works, which focused on the transmission of communication symbols to synthesize a radar transmit beam pattern, our method provides more degrees of freedom for MIMO radar and is thus able to obtain improved radar performance, as demonstrated in our simulation study. Furthermore, the proposed dual-function scheme approaches the radar performance of the radar-only scheme, i.e., without spectrum sharing, under reasonable communication quality constraints.
Eigenvalue topology optimization via efficient multilevel solution of the frequency response (2018)

Summary The article presents an efficient solution method for structural topology optimization aimed at maximizing the fundamental frequency of vibration. Nowadays, this is still a challenging problem mainly because of the high computational cost required by spectral analyses. The proposed method relies on replacing the eigenvalue problem with a frequency response one, which can be tuned and efficiently solved by a multilevel procedure. Connections of the method with multigrid eigenvalue solvers are discussed in details. Several applications demonstrating more than 90% savings of the computational time are presented as well.
Initial Experimental Results with Unthrottled Load Control Using a Mechanical Fully Variable Valve Lift System for High-Speed Operation (2004)

&lt;div class="htmlview paragraph"&gt;The ‘UniValve’ fully variable mechanical valve lift system is rated for use at engine speeds up to 8500 rpm. This system varies the valve opening period together with the amount of valve lift. When the engine is idling and valve lift is approximately 0.3 mm, the opening period is about 90 degrees of crankshaft rotation; at the full valve lift of 9 mm, the valve remains open for 320 degrees of crankshaft rotation. Valve lift is adjusted by means of an extremely rigid eccentric shaft rotating in bearings in the cylinder head. The system has been applied to a single-cylinder engine. The valve gear's dynamic behavior at engine speeds up to 8500 rpm the first results are described here, together with the fuel-consumption and torque benefits and the system's influence on emissions. The effects of the new load control system on mixture formation and the resulting nvh of the single-cylinder engine, particularly at low running speeds and loads, are also examined.&lt;/div&gt;
Metabolism of Decoquinate in Chickens and Japanese Quail (1989)

Thirty mature chicken hens and 40 mature Japanese quail hens were used in an experiment to compare pathways of decoquinate (DQ) excretion. Labelled DQ was injected into chickens (.5 microCi via wing vein puncture) and quail (.25 microCi via cardiac puncture) on Day 0. Blood was sampled at 0, 1.5, 3, 6, 9, 12, 24, and 48 h postinjection. Eggs and excreta of chickens and quail were collected for 28 and 14 days, respectively, and analyzed for 14C. Six chickens and eight quail were sacrificed prior to 14C-DQ injection and also on Days 1, 7, 14, and 34 or 32 postinjection. Samples of liver, heart, kidney, bile, skin, fat, and muscle were analyzed for 14C. Blood rapidly cleared 14C in both species, and the half-time of 14C excretion via excreta was more rapid in quail (.37 day) than in chickens (.92 day). Little 14C was found in the eggs of quail (.32% of dose) and chickens (.17% of dose). Quail appeared to excrete peak amounts of detectable 14C 1 day earlier (Day 4) than chickens (Day 5). Liver contained the greatest concentration of 14C on Day 1 in both species. By the end of the experiment, less than 1% of the dose remained in liver or other organs. Results indicate that chickens and quail metabolize 14C-DQ at comparable rates and by similar pathways.
Genome-wide analysis of 102,084 migraine cases identifies 123 risk loci and subtype-specific risk alleles (2022)

Migraine affects over a billion individuals worldwide but its genetic underpinning remains largely unknown. Here, we performed a genome-wide association study of 102,084 migraine cases and 771,257 controls and identified 123 loci, of which 86 are previously unknown. These loci provide an opportunity to evaluate shared and distinct genetic components in the two main migraine subtypes: migraine with aura and migraine without aura. Stratification of the risk loci using 29,679 cases with subtype information indicated three risk variants that seem specific for migraine with aura (in HMOX2, CACNA1A and MPPED2), two that seem specific for migraine without aura (near SPINK2 and near FECH) and nine that increase susceptibility for migraine regardless of subtype. The new risk loci include genes encoding recent migraine-specific drug targets, namely calcitonin gene-related peptide (CALCA/CALCB) and serotonin 1F receptor (HTR1F). Overall, genomic annotations among migraine-associated variants were enriched in both vascular and central nervous system tissue/cell types, supporting unequivocally that neurovascular mechanisms underlie migraine pathophysiology.
Sparse Signal Recovery Using MPDR Estimation (2019)

Utilizing the array processing minimum power distortionless response (MPDR) beamformer framework, we present a new perspective on the sparse Bayesian learning (SBL) algorithm used in sparse signal recovery. In addition to providing more insight into the SBL algorithm, this new perspective allows us to extend the algorithm to more general non-Gaussian priors. Finally, we use the connection between the MPDR and the LMMSE estimator to lower the complexity of the algorithm using a generalized approximate message passing (GAMP) based LMMSE estimator. The result is a GAMP based algorithm with improved convergence properties.
Evaluation of the Performance Characteristics of the Lightning Imaging Sensor (2019)

Abstract The Lightning Imaging Sensor (LIS) that was on board the Tropical Rainfall Measuring Mission (TRMM) satellite captured optical emissions produced by lightning. In this work, we quantify and evaluate the LIS performance characteristics at both the pixel level of LIS events and contiguous clusters of events known as groups during a recent 2-yr period. Differences in the detection threshold among the four quadrants in the LIS pixel array produce small but meaningful differences in their optical characteristics. In particular, one LIS quadrant (Q1, X ≥ 64; Y ≥ 64) detects 15%–20% more lightning events than the others because of a lower detection threshold. Sensitivity decreases radially from the center of the LIS array to the edges because of sensor optics. The observed falloff behavior is larger on orbit than was measured during the prelaunch laboratory calibration and is likely linked to changes in cloud scattering pathlength with instrument viewing angle. Also, a two-season comparison with the U.S. National Lightning Detection Network (NLDN) has uncovered a 5–7-km north–south LIS location offset that changes sign because of periodic TRMM yaw maneuvers. LIS groups and flashes that had any temporally and spatially corresponding NLDN reports (i.e., NLDN reported the radio signals from the same group and/or from other groups in the same flash) tended to be spatially larger and last longer (only for flashes) than the overall population of groups/flashes.
A new particle mounting method for surface analysis (2021)

The chemical analysis of microparticles is challenging due to the need to mount the particles on a substrate for analysis; double‐sided adhesive tape is often used (sometimes conductive), however that is usually coated with poly (dimethyl siloxane) (PDMS) that is often used as a release agent. PDMS is a common surface contamination that can mask surface chemistries and hinder material performance where it is dependent on this contaminated interface. It is known that PDMS contains a very mobile oligomeric fraction that readily diffuses across surfaces resulting in the contamination of mounted particulate samples before and during surface chemistry analysis. This makes it impossible to determine whether the PDMS has arisen from the analysis procedure or from the sample itself. A new sample preparation method is proposed where polymer microparticles are mounted on a poly (hydroxyethyl methacrylate) (pHEMA) polymer solution, which we compare with particles that have been mounted on adhesive discs using time‐of‐flight secondary ion mass spectrometry (ToF‐SIMS) and 3D OrbiSIMS analysis. Particles mounted on the pHEMA substrate results in a reduction of PDMS signal by 99.8% compared with microparticles mounted on adhesive discs. This illustrates how a simple, quick and inexpensive polymer solution can be used to adhere particles for analysis by ToF‐SIMS, or other surface chemical analysis techniques such as X‐ray photoelectron spectroscopy (XPS), without introduction of large amounts of silicone contaminant.
Pyrrolidone and Caprolactam‐Based Materials in Adhesion Related Applications (2021)

Abstract Adhesion is the process of attachment of substances due to the presence of intermolecular forces of attraction between them. Polyvinyl pyrrolidone (PVP) polymers have widespread use in the adhesive industry because of their favorable physicochemical properties. In an aqueous environment, the adhesive properties of pyrrolidone‐based materials are correlated to their polarities. Pressure sensitive adhesives (PSA) are an unusual class of adhesive polymers. A PSA composition should also exhibit high‐cohesive strength and elasticity. Lactam‐based vinyl monomers are widely employed in ultraviolet and electron beam curable adhesives commonly found in coatings, inks, optical materials, and packaging applications. Urea‐formaldehyde thermoset resins are one of the most important classes of adhesive resins for producing wood‐based panels. The adhesives were made by coaxial‐electrospinning of polycaprolactam as the core and PVP as the adhesive sheath. The resulting material was radiation‐crosslinked to yield matrices that were composed of fibrous layered materials.
The influence of scar on the spatio-temporal relationship between electrical and mechanical activation in heart failure patients (2019)

Scar decreases the association between electrical and mechanical activation, even when scar is remote from late activated regions.
ChemInform Abstract: Synthesis of 4‐Substituted Imidazo[1,2‐a]quinoxalines. (1999)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Unguiculins A-C: cytotoxic bis-guanidine alkaloids from the French Polynesian sponge, Monanchora n. sp (2017)

Two new acyclic bis-guanidine alkaloids, unguiculins B-C (2-3), were isolated from a French Polynesian sponge Monanchora n. sp. together with the known compound unguiculin A (1). Their structures were established by spectroscopic data interpretation and comparison with the literature. Unguiculins A-C displayed antiproliferative and cytotoxic efficacy against several human cancer cells with IC<sub>50</sub> values in the micromolar range.
LED modulation characteristics (2006)

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Control of light polarization using spin-injected VECSELS (2013)

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