gebhart/patrepeval huggingface dataset:
Hardware prototype demonstration of a cognitive radar with sparse array antennas (2020)

As a typical signal processing problem, direction‐of‐arrival (DOA) estimation has been adapted to a wide range of applications in radar‐based systems. A high DOA resolution requires a large number of antenna elements which increases the overall cost. To minimise the cost, it is desirable to choose an optimum sub‐array from a full array. To enable cognition, the subarrays are selected based on the present target scenario. By using deep learning (DL) based techniques, the authors show a cognitive sparse array selection technique. By using hardware simulations, they demonstrate the applicability of the deep learning (DL)‐based sparse antenna selection network in direction‐of‐arrival (DOA) estimation problems. They show that the DL‐based sub‐arrays lead to a higher direction‐of‐arrival (DOA) estimation accuracy by 6 dB over random array selection.
Ultrasound-Assisted Polyol Method for the Preparation of SBA-15-Supported Ruthenium Nanoparticles and the Study of Their Catalytic Activity on the Partial Oxidation of Methane (2004)

Metallic Ru nanoparticles have been successfully produced and incorporated into the pores of SBA-15 in situ employing a simple ultrasound-assisted polyol method. The product has been confirmed by X-ray diffraction, transmission electron microscopy, and X-ray photoelectron spectroscopy, where ultrasound provides both the energy for the reduction of the Ru(III) ion and the driving force for the loading of the Ru(0) nanoparticles into the SBA-15 pores. An ultrasound-assisted insertion mechanism has been proposed based on the microjets and shake-wave effect of the collapsed bubbles. The catalytic properties of the SBA-15-supported Ru nanoparticles have been tested by the partial oxidization of methane and show very high activity and high CO selectivity.
Polydopamine/palygorskite hybrid-reinforced epoxy coatings adhered to a concrete surface (2020)

Purpose The purpose of this study is to prepare a polydopamine (PDA)–palygorskite (Pal) hybrid-reinforced epoxy coating with high adhesion strength on wet concrete surface. Design/methodology/approach One synthetic step was adopted to prepare novel PDA–Pal hybrid epoxy coating. The process and product were analyzed and confirmed by FIRT, thermogravimetric analysis and scanning electron microscopy. The mass fraction of PDA–Pal hybrid affecting the adhesion strength of epoxy coating was analyzed and confirmed by pull-off test. Findings PDA–Pal hybrid mass fractions of 0, 1, 3 and 5 were added to the coatings. For a 5 Wt.% PDA–Pal hybrid content, the adhesive strengths on the saturated or underwater concrete surfaces increased to 4.0 and 2.5 MPa, respectively. In addition, the tensile mechanical property of the epoxy coating improved significantly after PDA–Pal addition. Practical implications This new epoxy coating hybrid by PDA–Pal could be applied as a concrete protective layer near water or in wet or damp environments. Originality/value Introduction of PDA–Pal hybrid to prepare epoxy coating with high adhesion strength on wet concrete surface has not been systematically studied previously.
Intravenous and Regional Paclitaxel Formulations (2004)

Paclitaxel has been proven to be effective against different types of cancer. A delivery system loaded with paclitaxel at tumor site should provide a high local concentration of the drug detrimental to malignant cells, which prevents the re-growth and metastasis of tumor. In this review, paclitaxel formulations for systemic and for intratumoral administration are discussed. Keywords: paclitaxel, delivery systems, polymers, intratumoral delivery, formulations
Skiplist-based concurrent priority queues (2002)

This paper addresses the problem of designing scalable concurrent priority queues for large scale multiprocessors machines with up to several hundred processors. Priority queues are fundamental in the design of modern multiprocessor algorithms, with many classical applications ranging from numerical algorithms through discrete event simulation and expert systems. While highly scalable approaches have been introduced for the special case of queues with a fixed set of priorities, the most efficient designs for the general case are based on the parallelization of the heap data structure. Though numerous intricate heap-based schemes have been suggested in the literature, their scalability seems to be limited to small machines in the range of ten to twenty processors. This paper proposes an alternative approach: to base the design of concurrent priority queues on the probabilistic skiplist data structure, rather than on a heap. To this end, we show that a concurrent skiplist structure, following a simple set of modifications, provides a concurrent priority queue with a higher level of parallelism and significantly less contention than the fastest known heap-based algorithms. Our initial empirical evidence, collected on a simulated 256 node shared memory multiprocessor architecture similar to the MIT Alewife, suggests that the new skiplist based priority queue algorithm scales significantly better than heap based schemes throughout most of the concurrency range. With 256 processors, they are about twice as fast in performing deletions and up to 8 times faster in performing insertions.
Companion search around beta Pictoris with the newly commissioned L'-band vector vortex coronagraph on VLT/NACO (2013)

International audience
On the Impact of PA-Induced In-Band Distortion in Massive MIMO (2014)

Conventional downlink signals in massive mimo suffer from high PAR, which requires the power amplifiers of the base station to be backed off to avoid signal distortion, which lowers power efficiency. To improve efficiency, there are precoding schemes that produce signals with low PAR. To compare different precoding schemes, this article estimates their power consumptions through simulations, in which in-band distortion and amplifier efficiency effects are taken into consideration. It is found that, when only in-band distortion and the data rate requirement determine the back-off, the inband distortion is negligible and the power amplifiers can be operated at peak efficiency. It also turns out that low-PAR and conventional, high-PAR, precoding schemes consume approximately the same amount of power when the out-of-band part of the distortion is disregarded.
Effects of voluntary exercise on cerebral microvascular oxygenation in aged mice (2022)

Although the beneficial effects of regular physical exercise on brain aging and neurodegenerative diseases are well recognized, a clear understanding of how exercise leads to such benefits remains elusive. In this work, we investigated the effects of normal aging on cortical microvascular oxygenation, perfusion, and morphology and the impact of four months of voluntary wheel running on cortical microvascular oxygenation in 20 months old mice. We used two-photon microscopy to assess age-related and exercise-induced changes in the distributions of capillary oxygen partial pressure (PO2) and red-blood-cell flux across cortical depth in awake mice. Our finding suggests the mitigating effect of exercise on the progression of age-related changes in capillary oxygenation in deeper cortical layers which may be related to health-enhancing benefits of exercise in elderly individuals.
Synthesis and Characterization of a Novel Poly(aryl ether) Containing 4‐Chloro‐2,5‐diphenyloxazole (2004)

Abstract 4‐Chloro‐2,5‐bis(4‐fluorophenyl)oxazole monomer has successfully been synthesized using cyclization reaction of 4‐fluorobenzoyl cyanide with 4‐fluorobenzaldehyde. This monomer was converted to poly(aryl ether)s by nucleophilic substitution of the fluorine atoms on the benzene rings of oxazole monomer with bisphenol A. The influence of the reaction time on the molecular weight had been investigated. The polymers were identified by FT‐IR, 1 H‐NMR and TGA. The products exhibited weight‐average molar masses up to 2.81 x 10 4 g mol −1 in GPC. These poly(aryl ether)s showed very high thermal stability up to 363 °C for 5 % weight loss in TGA under N 2 .
A novel sequential design strategy for global surrogate modeling (2009)

In mathematical/statistical modeling of complex systems, the locations of the data points are essential to the success of the algorithm. Sequential design methods are iterative algorithms that use data acquired from previous iterations to guide future sample selection. They are often used to improve an initial design such as a Latin hypercube or a simple grid, in order to focus on highly dynamic parts of the design space. In this paper, a comparison is made between different sequential design methods for global surrogate modeling on a real-world electronics problem. Existing exploitation and exploration-based methods are compared against a novel hybrid technique which incorporates both an exploitation criterion, using local linear approximations of the objective function, and an exploration criterion, using a Monte Carlo Voronoi tessellation. The test results indicate that a considerable improvement of the average model accuracy can be achieved by using this new approach.
Coherent backscattering in optical microring resonators (2010)

The effects of backscattering induced by waveguide sidewall roughness in integrated ring resonators (RRs) are experimentally observed. We demonstrate that coherent backscattering, originated by multiple round trips in the RR, increases with the square of the effective group index of the cavity and can dramatically affect the behavior of integrated RRs even at moderate quality factors of 104. From our results backscattering emerges as one of the most severe limiting factors on the performance of RRs fabricated with state-of-the-art silicon-on-insulator nanowaveguides.
Supplementary Table S1 from Small-Molecule Polθ Inhibitors Provide Safe and Effective Tumor Radiosensitization in Preclinical Models (2023)

&lt;p&gt;Luciferase-based MMEJ assay in a panel of cancer cell lines.&lt;/p&gt;
Peginesatide in Patients with Anemia Undergoing Hemodialysis (2013)

Peginesatide, administered monthly, was as effective as epoetin, administered one to three times per week, in maintaining hemoglobin levels in patients undergoing hemodialysis. (Funded by Affymax and Takeda Pharmaceutical; ClinicalTrials.gov numbers, NCT00597753 [EMERALD 1], NCT00597584 [EMERALD 2], NCT00598273 [PEARL 1], and NCT00598442 [PEARL 2].).
An interleaved low-voltage half-bridge converter with master-slave peak current control (2002)

An interleaved low-voltage half-bridge converter is proposed in this paper. With a master-slave peak current control, charge balances of the main transformers are automatically achieved. Thus current runaway is avoided without an additional correction circuit. It is shown that the steady state analysis and simulation results are in good agreement. A 48 V input, 1.5 V/60 A output prototype is built to verify the proposed control method.
Comparison of hydrogenases from Clostridium butyricum and Thiocapsa roseopersicina: Hydrogenases of C-butyricum and T-roseopersicina (2006)

The properties related to the temperature and oxygen stability of the cytoplasmic hydrogenases from the fermentative strict anaerobic bacterium, Clostridium butyricum NCIB 9576 (Cl. butyricum), and purple sulfur phototrophic bacterium, Thiocapsa roseopersicina NCIB 8347 (T. roseopersicina), were compared. The optimum temperatures for the growth of Cl. butyricum and T. roseopersicina were 37C and 25°C, respectively, whereas those for the H 2 evolution of the cytoplasmic hydrogenases prepared from Cl. butyricum (C-H 2 ase) and T. roseopersicina (T-H 2 ase) were 45°C and 65°C, respectively. The T-H 2 ase was more thermostable than the C-H 2 ase and retained its full activity for 5 h at 50°C under anaerobic conditions and 90% of its activity at 60°C, whereas the C-H 2 ase lost its activity drastically at 50°C. The optimum pHs for H 2 oxidation of the C-H 2 ase and T-H 2 ase were 9.0 and 7.5, respectively. Both enzymes showed a maximum H 2 evolution activity at pH 7.0. Under aerobic conditions, 80% of the T-H 2 ase activity was retained for 10 h at 30°C, and 50% of the activity remained after 6 days under the same experimental conditions. However, the C-H 2 ase was labile to oxygen and lost its activity immediately on exposure to air. Therefore, these properties of the T-H 2 ase are expected to be advantageous for application in in vitro biological H 2 production systems.
Signal Propagation Through Piecewise Transmission Lines for Interpretation of Reflectometry in Photovoltaic Systems (2018)

We present a framework for analyzing electromagnetic signal propagation through piecewise-defined transmission lines with arbitrary, series-connected impedances. While the formulation is general and scalable, we apply it here to propagation through a photovoltaic module with cables on either side acting, with a home run cable, as a section of an inhomogeneous transmission line. Understanding propagation through this unit of a series-connected string of photovoltaic modules is necessary to enable the use of time-domain reflectometry techniques for monitoring the status of individual components in series-connected strings within large photovoltaic arrays.
Vehicle to Grid Systems (2009)

The potential economic implications of using vehicle batteries to store grid electricity generated at off-peak hours for off-vehicle use during peak hours were examined. Hourly electricity prices in three U.S. cities were used to arrive at daily profit values, while the economic losses associated with battery degradation were calculated based on data collected from A123 Systems LiFePO4/Graphite cells tested under combined driving and off-vehicle electricity utilization.
MR Imaging of Neuronal Transport in the Guinea Pig Facial Nerve: Initial Findings (1995)

Certain dextran coated iron oxides such as MION (monocrystalline iron oxide nanocompound) coupled to wheat germ agglutinin (MION-WGA) have been shown to exhibit i) neuronal uptake ii) axonal transport and iii) strong magnetic effects on tissues (superparamagnetism) in which they are localized. In the current study, we utilized such an agent to visualize axonal transport in the facial nerve in vivo by magnetic resonance (MR) imaging. Following injection of the compound into the facial nerves of guinea pigs, MR images were obtained at multiple time points (1, 3 and 5 days) and the imaged tissues were processed for subsequent histological examination. In nerves that had been injected with MION-WGA, the entire nerve appeared as a uniformly hypointense structure with a calculated transport rate of 5 mm/day. By 3 days, the agent within the facial nerve was traceable by MRI from a site of injection in the buccal branch to the stylomastoid foramen. Fluorescence and autoradiography studies confirmed axonal transport. These results show that MION-based magnetopharmaceuticals can be used to demonstrate slow axonal transport, and thereby visualize functional peripheral nerves in vivo by MR imaging. The method holds promise for developmental neuroscience research as well as a method to detect neural abnormalities by MR imaging.
An efficient PBR targeted photosensitizer for breast cancer imaging and therapy (2010)

1134 Objectives Peripheral benzodiazepine receptor (PBR) overexpression has been reported in various human breast cancer cell lines. It was reported that the very aggressive human breast cancer cell MDA-231 has extremely high PBR expression. PK11195, an isoquinoline analog, is one of the PBR ligands of highest PBR binding affinity. Due to the long biological half life of our photosensitizers, there is a need to label it with a longer lived radioisotope. In our present study, our objectives were (i) To synthesize and characterize conjugates of highly efficient photosensitizer 2-(1-hexyloxyethyl)-2-devinyl pyropheophorbide-a (HPPH) developed in our laboratory with I-PK11195 for both imaging (PET) and Photodynamic therapy (PDT), (ii) detailed in vitro and in vivo studies are currently in progress to investigate the molecule affinity, target specificity and PDT efficacy. Methods I-PK11195 molecule was conjugated with HPPH by incorporating a six carbon amide linker. After investigating its PBR binding affinity, the molecule was converted into the corresponding 124I-derivatives. Its imaging ability was investigated on MDA-231 tumor bearing mice (Scid) using a high-resolution scanner (microPET Focus 120®). Comparative in vitro and in vivo PDT efficacy investigations were also performed. Results Excellent tumor localization of the conjugate molecule was observed. Conjugating photosensitizer with PK11195 improves its PBR binding affinity. Conclusions I- PK11195 can be a good vehicle to deliver photosensitizers to PBR over-expressed breast cancer regions and the conjugate molecule could be a very promising photosensitizer for both tumor imaging (PET) and PDT
Inclusion complexes involving a novel ligand superstructure: dioxygen adducts and other derivatives of retro-bridged cyclidene iron, cobalt, and nickel complexes (1987)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInclusion complexes involving a novel ligand superstructure: dioxygen adducts and other derivatives of retro-bridged cyclidene iron, cobalt, and nickel complexesJames H. Cameron, Masaaki Kojima, Bohdan Korybut-Daszkiewicz, Bradley K. Coltrain, Thomas J. Meade, Nathaniel W. Alcock, and Daryle H. BuschCite this: Inorg. Chem. 1987, 26, 3, 427–439Publication Date (Print):February 1, 1987Publication History Published online1 May 2002Published inissue 1 February 1987https://pubs.acs.org/doi/10.1021/ic00250a017https://doi.org/10.1021/ic00250a017research-articleACS PublicationsRequest reuse permissionsArticle Views129Altmetric-Citations21LEARN 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 Get e-Alerts
Adsorption Conformation of Comb-Shaped Polycarboxylate Ethers on Ettringite (100) Surface: An Atomic Scales Simulation (2020)

The adsorption of five polycarboxylate ethers (PCEs) oligomers with different side-chain number and side-chain length on the ettringite (100) surface in explicit solution is studied by all-atom molecular dynamics (MD) simulations. The adsorption conformations, adsorption energies, the radial distribution functions (RDF) between PCEs and ettringite surface and density distribution profile of water perpendicular to the substrate are analyzed. After dynamic equilibrium, negatively charged carboxylate groups are absorbed on the surface of the disordered ettringite crystal and the side-chains are extended to solution. The influence of the number of side-chain on the adsorption strength of PCEs on the ettringite (100) surface is more significant than that of the length of side-chain. The less number of grafted side-chains, the weaker electrostatic shielding, the electrostatic interaction between PCEs and ettringite (100) surface is stronger, which is favorable for the adsorption. The conformation of adsorbed PCEs is closely related to the length of side chain. The greater the length of side-chains is, the larger will be the coverage area of PCE on surface and the degree of water reduction. The mechanism of adsorption of PCEs on ettringite surface is concluded and the major contribution to the adsorption includes ion pairs, hydrogen bonds and an entropic compensation.
Space Station Control Moment Gyroscope Lessons Learned (2010)

Four 4760 Nms (3510 ft-lbf-s) Double Gimbal Control Moment Gyroscopes (DGCMG) with unlimited gimbal freedom about each axis were adopted by the International Space Station (ISS) Program as the non-propulsive solution for continuous attitude control. These CMGs with a life expectancy of approximately 10 years contain a flywheel spinning at 691 rad/s (6600 rpm) and can produce an output torque of 258 Nm (190 ft-lbf)1. One CMG unexpectedly failed after approximately 1.3 years and one developed anomalous behavior after approximately six years. Both units were returned to earth for failure investigation. This paper describes the Space Station Double Gimbal Control Moment Gyroscope design, on-orbit telemetry signatures and a summary of the results of both failure investigations. The lessons learned from these combined sources have lead to improvements in the design that will provide CMGs with greater reliability to assure the success of the Space Station. These lessons learned and design improvements are not only applicable to CMGs but can be applied to spacecraft mechanisms in general.
DNA-dependent Protein Kinase Activity Is Not Required for Immunoglobulin Class Switching (2002)

Class switch recombination (CSR), similar to V(D)J recombination, is thought to involve DNA double strand breaks and repair by the nonhomologous end-joining pathway. A key component of this pathway is DNA-dependent protein kinase (DNA-PK), consisting of a catalytic subunit (DNA-PKcs) and a DNA-binding heterodimer (Ku70/80). To test whether DNA-PKcs activity is essential for CSR, we examined whether IgM(+) B cells from scid mice with site-directed H and L chain transgenes were able to undergo CSR. Although B cells from these mice were shown to lack DNA-PKcs activity, they were able to switch from IgM to IgG or IgA with close to the same efficiency as B cells from control transgenic and nontransgenic scid/+ mice, heterozygous for the scid mutation. We conclude that CSR, unlike V(D)J recombination, can readily occur in the absence of DNA-PKcs activity. We suggest nonhomologous end joining may not be the (primary or only) mechanism used to repair DNA breaks during CSR.
Reflection and emission properties of an infrared emitter (2007)

The reflection and emission properties of an infrared emitter, which is a plasmonic multilayer structure consisting of a relief metallic grating, a waveguide layer, and a metallic substrate are investigated both experimentally and theoretically. A localized surface plasmon polariton (SPP) mode which is angular-independent in almost the full range of incident angles is observed. The thermal emission of this structure is also measured. It is found that the emission peak coincides with the angular-independent localized SPP mode. In addition, the emission spectrum of the plasmonic emitter can be predicted by investigating the reflectance spectrum.
Illegal state extraction from Register Transfer Level (2010)

In this paper we present a new automated tool for illegal state identification at Register Transfer Level (RTL). This tool is the cornerstone of a new methodology for functional constraints extraction, to be applied in the ATPG process. Results show that our tool helps reducing overtesting and false error detection during verification.