gebhart/patrepeval huggingface dataset:
Fabrication and Performance of Compound Eye Sensors with Scanning Receptor Arrays. (2001)

We have built a biomorphic micro visual sensor equipped with a mechanical scanning system. The sensor is inspired by the structure of the fly's compound eye which was found to possess a unique muscle and tendon actuation system for its scanning retina. The improvement in micro-opto-electro-mechanical systems encourages the design of reliable, efficient and integrated smart visual sensors for robotic applications in particular for the autonomous, visually-guided navigation of mobile robots. We have verified the effect of retinal scanning for a robotic visual system through the construction of a large-scale prototype at the millimeter-scale. The performance of a newly fabricated HEMS prototype whose size approaches the order of the insects' compound eyes is then evaluated in comparison with that of the large-scale prototype. The micro-sized visual sensor is composed of a scanning microlens array (120[μm] in lens diameter) and a photo-diode array. The actuation of the microlens array induces a rotation of the visual axes. According to the principle of retinal scanning, the micro-sensor is able to retrieve the local angular velocity with enhanced reliability.
Marked reduction of mortality in salt-loaded Dahl salt- sensitive rats by the new, selective endothelin ETA receptor antagonist, J-105859 (2000)

J-105859 is a selective, potent, orally active ETA-selective antagonist ETA antagonists may reduce morbidity as well as mortality in salt-sensitive hypertension.
Improvement in the Sensing Response of Nano-Crystalline ZnO-Based Hydrogen Sensor: Effect of Swift Heavy Ion Irradiation (2016)

Hydrogen gas sensing response of RF sputtered nano-crystalline ZnO thin film is improved by ~34.73% using swift heavy ion irradiation technique. X-ray diffraction reveals single crystalline wurtzite structure of ZnO thin films. Full width half maximum (FWHM) of (0002) diffraction peak is decreased with increase in ion fluences. However, at very high fluence 1 × 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">13</sup> ions/cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> , crystallinity is degraded while FWHM of diffraction peak increases. The ZnO films were grown under highly compressive stress, which was relaxed with incremental ion fluences up to 1 × 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">13</sup> ions/cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> . Cathodoluminescence spectroscopy shows intense predominant peak around ~3.23 eV, which indicates good optical quality of the films. As ion fluence increases, a blue shift appears in near band emission peak from 3.23 to 3.33 eV, which indicates that in-plane stress is decreased. Surface morphology shows generation of self-affine nanostructure and grain fragments as ion fluences were increased. Grain fragmentations had enhanced the surface reaction, and as a result, gas sensor's relative response has improved. It was observed that the gas sensor's sensitivity is strongly dependent on ion fluences and operating temperature. The sensitivity was enhanced from 66.68% to 89.84% with fluence variations from pristine to 1 × 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">12</sup> ions/cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> at 175 °C operating temperature.
Arm Power Control of the Modular Multilevel Converter in Photovoltaic Applications (2019)

In this paper, a control method is proposed that allows the extraction of maximum power from each individual photovoltaic string connected to the Modular Multilevel Converter (MMC) and inject balanced power to the AC grid. The MMC solution used does not need additional DC–DC converters for the maximum power point tracking. In the MMC, the photovoltaic strings are connected directly to the sub-modules. It is shown that the proposed inverter solution can provide balanced three-phase output power despite an unbalanced power generation. The maximum power of the photovoltaic string is effectively harnessed due to the increased granularity of the maximum power point tracking. An algorithm that tracks the sub-module capacitor voltages to their respective voltage references is proposed. A detailed modeling and control method for balanced operation of the proposed topology is discussed. The operation of the MMC under unbalanced power generation is discussed. Simulation results are provided that show the effectiveness of the proposed control under unequal irradiance.
Elastic‐Plastic Contact Damage in a Lead Lanthanum Zirconate Titanate (1986)

Spherical indenters were used to produce elastic‐plastic contact damage in a lead lanthanum zirconate titanate (PLZT) under conditions of quasi‐static and impact loading. The extent of radial cracking produced under both loading conditions showed good correlation with the response predicted by an earlier fracture mechanics analysis for quasi‐static conditions. Calculated radial crack lengths corresponding to conditions of impact loading exhibited excellent agreement with experimentally measured values. The dynamic hardness of the PLZT was determined to be ∼ 1.5 times the quasi‐static hardness. Differences in the radial crack lengths produced under the two loading conditions were attributed primarily to this difference in hardness response.
Molecular motions and metastable phases in solid cyclooctane (1989)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular motions and metastable phases in solid cyclooctaneRobert C. Keller, Matthew S. Coffey, Martin J. Lizak, Mark S. Conradi, and William BunnelleCite this: J. Phys. Chem. 1989, 93, 9, 3832–3836Publication Date (Print):May 1, 1989Publication History Published online1 May 2002Published inissue 1 May 1989https://pubs.acs.org/doi/10.1021/j100346a090https://doi.org/10.1021/j100346a090research-articleACS PublicationsRequest reuse permissionsArticle Views48Altmetric-Citations2LEARN 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
Proteomic Analysis Permits the Identification of New Biomarkers of Arterial Wall Remodeling in Hypertension (2008)

Hypertension represents one of the main risk factors for vascular diseases. Genetic susceptibility may influence the rate of its development and the associated vascular remodeling. To explore markers of hypertension-related morbidity, we have used surface-enhanced laser desorption/ionization time-of-flight (SELDI-TOF) mass spectrometry to study changes in proteins released by the aorta of two rat strains with different susceptibilities to hypertension. Fischer and Brown Norway (BN) rats were divided into a control group and a group receiving low-dose N(Omega)-nitro-L-arginine methyl ester (L-NAME), a hypertensive drug, interfering with endothelial function. In spite of a significant elevation of blood pressure in both strains in response to L-NAME, BN rats exhibited a lower vascular remodeling in response to hypertension. Proteomic analysis of secreted aortic proteins by SELDI-TOF MS allowed detection of four mass-to-charge ratio (m/z) peaks whose corresponding proteins were identified as ubiquitin, smooth muscle (SM) 22alpha, thymosin beta4, and C-terminal fragment of filamin A, differentially secreted in Fischer rats in response to L-NAME. We have confirmed a strain-dependent difference in susceptibility to L-NAME-induced hypertension between BN and Fischer rats. The greater susceptibility of Fischer rats is associated with aortic wall hypertrophic remodeling, reflected by increased aortic secretion of four identified biomarkers. Similar variations in one of them, SM22alpha, also were observed in plasma, suggesting that this marker could be used to assess vascular damage induced by hypertension.
F- and H-Area Seepage Basins Water Treatment System Process Optimization and Alternative Chemistry Ion Exchange/Sorbent Material Screening Clearwell Overflow Study (2000)

This study investigated alternative ion exchange/sorbent materials and polishing chemistries designed to remove specific radionuclides not removed during the neutralization/precipitation/clarification process.
Posttranscriptional Regulation of Cell-Cell Interaction Protein-Encoding Transcripts by Zfs1p in Schizosaccharomyces pombe (2012)

Members of the tristetraprolin (TTP) family of CCCH tandem zinc finger proteins can bind directly to AU-rich elements in mRNAs and promote transcript deadenylation and decay. The yeast Schizosaccharomyces pombe expresses a single TTP family member, Zfs1p. In this study, we identified probable Zfs1p target mRNAs by comparing transcript levels in wild-type yeast and zfs1Δ mutants, using deep sequencing and microarray approaches. We also used direct RNA sequencing to determine polyadenylation site locations and to confirm the presence of potential Zfs1p target sequences within the target mRNA. These studies identified a set of transcripts containing potential Zfs1p binding sites that accumulated significantly in the zfs1Δ mutants; a subset of these transcripts decayed more slowly in the zfs1Δ mutants and bound directly to Zfs1p in coimmunoprecipitation assays. One apparent direct target encodes the transcription factor Cbf12p, which is known to increase cell-cell adhesion and flocculation when overexpressed. Studies of zfs1Δ cbf12Δ double mutants demonstrated that the increased flocculation seen in zfs1Δ mutants is due, at least in part, to a direct effect on the turnover of cbf12 mRNA. These data suggest that Zfs1p can both directly and indirectly regulate the levels of transcripts involved in cell-cell adhesion in this species.
Enhanced fragmentation of toluene through linear and nonlinear increase of the focal spot area of an ultrashort laser pulse (2005)

Toluene fragmentation by intense femtosecond laser pulses is experimentally investigated. A strong increase of the toluene fragmentation appears to correlate with an increase of the focal area due to changes in the focal geometry and nonlinear small-scale self-focusing. The scenario of Raman modes excitation proposed in an earlier publication [A.M. M\"uller et al., Phys. Rev. Lett. 88, 023001 (2002)] is ruled out as the dominant effect for the enhancement.
Biaxial Orientation of Poly(ethylene 2,5‐furandicarboxylate): An Explorative Study (2018)

Abstract The biaxial orientation behavior of poly(ethylene 2,5‐furandicarboxylate) (PEF) is studied in comparison to poly(ethylene terephthalate) (PET). PEF is a polyester that can be produced through similar steps as PET but using 100% biobased 2,5‐furandicarboxylic acid instead of terephthalic acid. This work highlights the stress–strain behavior of PEF during biaxial orientation at various temperatures. Strain hardening and strain‐induced crystallization in the oriented PEF samples generally appeared at higher stretch ratios for PEF than for PET at comparable molecular weight, while somewhat lower degrees of crystallinity are reached in PEF. Shrinkage in oriented PEF is found to be on par with PET in the region of the glass transition. Higher modulus and improved barrier properties, compared to PET, are found in the oriented materials when sufficiently high stretch ratios are applied in biaxial orientation.
N-acetyltransferase AAC(3)-I confers gentamicin resistance to Phytophthora palmivora and Phytophthora infestans (2019)

N-acetyltransferase AAC(3)-I is functional in Phytophthora oomycetes. In addition, the substrate specificity of the AAC(3)-I enzyme allows for re-transformation of geneticin-resistant strains. Our findings and resources widen the possibilities to study oomycete cell biology and plant-oomycete interactions.
Evaluating Single-Molecule Stokes and Anti-Stokes SERS for Nanoscale Thermometry (2015)

Plasmonic near fields, wherein light is magnified and focused within nanoscale volumes, are utilized in a broad array of technologies including optoelectronics, catalysis, and sensing. Within these nanoscale cavities, increases in temperature are expected and indeed have been demonstrated. Heat generation can be beneficial or detrimental for a given system or technique, but in either case it is useful to have knowledge of local temperatures. Surface-enhanced Raman spectroscopy (SERS), potentially down to the limit of single-molecule (SM) detection, has been suggested as a viable route for measuring nanoscale temperatures through simultaneous collection of Stokes and anti-Stokes SER scattering, as the ratio of their intensities is related to the Boltzmann distribution. We have rigorously verified SM detection in anti-Stokes SERS of rhodamine 6G on aggregated Ag nanoparticles using the isotopologue method. We observe a broad distribution in the ratio of anti-Stokes and Stokes signal intensities among SM events. An equivalent distribution in high-coverage, single-aggregate SERS suggests that the observed variance is not a SM phenomenon. We find that the variance is instead caused by a combination of local heating differences among hot spots as well as variations in the near-field strength as a function of frequency, effectively causing nonequivalent enhancement factors (EFs) for anti-Stokes and Stokes scattering. Additionally, we demonstrate that dark-field scattering cannot account for the frequency dependence of the optical near field. Finite-difference time-domain simulations for nanoparticle aggregates predict a significant wavelength dependence to the ratio of anti-Stokes/Stokes EFs, confirming that the observed variation in this ratio has strong nonthermal contributions. Finally, we outline the considerations that must be addressed in order to accurately evaluate local temperatures using SERS.
High thermal tolerance of 25-nm c-axis aligned crystalline In-Ga-Zn oxide FET (2018)

We developed FETs having gate lengths of 25 and 60 nm that are suited for high-temperature operation, using c-axis aligned crystalline In-Ga-Zn oxide (CAAC-IGZO) as its channel material. The FETs with a gate length of 60 nm achieved off-state leakage currents of 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-20</sup> A at 150°C. Furthermore, cutoff frequency the FETs with a gate length of 25 nm was 33 GHz at room temperature and changing the temperature from room temperature to 150°C changed the cutoff frequency by only -13% against -36% in Si FET. The CAAC-IGZO FET enables integrated circuits that consume little power even under high-temperature environments.
ChemInform Abstract: Nucleic Acids and Nucleosides Containing Carboranes (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.
Regioselective and Stereoselective Nucleophilic Ring Opening Reactions of A Phenyl-Substituted Aziridine:  Enantioselective Synthesis of β-Substituted Tryptophan, Cysteine, and Serine Derivatives (2002)

The asymmetric synthesis of beta-phenyl-substituted cysteine, tryptophan, and serine derivatives was successfully developed. In this approach, the key intermediate, enantiomerically pure 3-phenylaziridine-2-carboxylic ester 7, was prepared from alpha,beta-unsaturated ester 1 by employing the Sharpless asymmetric dihydroxylation. The aziridine 7 was treated with 4-methoxybenzylthiol, indole, and acetic acid to give beta-phenyl-substituted cysteine, tryptophan, and serine, respectively, in a clean S(N)2 type ring opening at the C3 position. This general approach can be used to synthesize a variety of beta-substituted novel amino acids.
The effect of standard- and high-dose epinephrine on coronary perfusion pressure during prolonged cardiopulmonary resuscitation (1991)

We studied the effect of standard and high doses of epinephrine on coronary perfusion pressure during cardiopulmonary resuscitation in 32 patients whose cardiac arrest was refractory to advanced cardiac life support. Simultaneous aortic and right atrial pressures were measured and plasma epinephrine levels were sampled. Patients remaining in cardiac arrest after multiple 1-mg doses of epinephrine received a high dose of 0.2 mg/kg. The increase in the coronary perfusion pressures was 3.7 ± 5.0 mm Hg following a standard dose, not a statistically significant change. The increase after a high dose was 11.3 ± 10.0 mm Hg; this was both statistically different than before administration and larger than after a standard dose. High-dose epinephrine was more likely to raise the coronary perfusion pressure above the previously demonstrated critical value of 15 mm Hg. The highest arterial plasma epinephrine level after a standard dose was 152 ± 162 ng/mL, and after a high dose, 393 ± 289 ng/mL. Because coronary perfusion pressure is a good predictor of outcome in cardiac arrest, the increase after high-dose epinephrine may improve rates of return of spontaneous circulation. (<i>JAMA</i>. 1991;265:1139-1144)
Three-dimensional (3D) morphological and liquid absorption assessment of sustainable biofoams absorbents using X-ray microtomography analysis (2022)

The three-dimensional (3D) microstructure of sustainable and biodegradable protein foam absorbents is correlated to their liquid absorption characteristics using X-ray microtomography. The physicochemical relationships between the protein material pore size and liquid penetration and distribution allow for understanding how the pores' interconnectivity impacts the absorption, particularly considering capillary-driven transport phenomena within the thin nano cell walls. The foams were made via lyophilization of protein solutions containing cellulose nanofibers to emphasize the impact of the processing on the foam microstructure. The results show gaseous and solid phases of the foams covering ca. 1000 pores, providing information that cannot be obtained using traditional 2D analysis (SEM). A correlation with the channel tortuosity was established based on the statistical accuracy of the diameter and number of pores per mm3. The relationship between absorption kinetics and physical parameters enables the designing of biofoams with functionality also resembling commercial synthetic products that currently generate a high amount of nondegradable waste in our society.
A simple and robust procedure for preparing graphene-oxide cryo-EM grids (2018)

Abstract Graphene oxide (GO) sheets have been used successfully as a supporting substrate film in several recent cryogenic electron-microscopy (cryo-EM) studies of challenging biological macromolecules. However, difficulties in preparing GO-covered holey carbon EM grids have limited its widespread use. Here, we report a simple and robust method for covering holey carbon EM grids with GO sheets and demonstrate that these grids are suitable for high-resolution single particle cryo-EM. GO substrates adhere macromolecules, allowing cryo-EM grid preparation with lower specimen concentrations and providing partial protection from the air-water interface. Additionally, the signal from images of the GO lattice beneath the frozen-hydrated specimen can be discerned in many motion-corrected micrographs, providing a high-resolution fiducial for evaluating beam-induced motion correction.
3D Network of Sepia Melanin and N‐ and, S‐Doped Graphitic Carbon Quantum Dots for Sustainable Electrochemical Capacitors (2021)

Abstract Organic electrode materials operating in aqueous electrolytes offer the opportunity to avoid toxic, critical, and expensive materials for electrochemical energy storage. When deposited on carbon current collectors, redox active organic materials add faradaic to electrostatic capacitance contribution to the electrodes. Here, a 3D network electrode material is reported upon, based on sepia melanin, a quinone macromolecule, and nitrogen‐ and sulfur‐doped graphitic carbon quantum dots (N,S GCQDs) designed to achieve good electronic conductivity and electrolyte wettability. The effect of various undoped and doped carbon quantum dots is also investigated, synthesized from acetic acid and sucrose instead of graphite, on the electrochemical performance of sepia melanin. Sepia/N,S GCQD shows optimum areal capacitance (≈180 mF cm −2 ) that is about twice as high as sepia (≈77 mF cm −2 ) with lower charge transfer resistance (1 ohm for sepia/N,S GCQDs compared to 10 ohms for sepia). The sepia/N,S GCQD symmetric supercapacitor in 0.5 m Na 2 SO 4(aq) exhibits promising capacitance retention ≈92% after 10 000 cycles at 5 A g −1 , 100% coulombic efficiency, 11 µW h cm −2 and 102 mW cm −2 maximum energy and power densities. The work paves the way for stable and potentially biodegradable supercapacitor electrode materials for environmentally benign electrochemical energy storage.
Dry-Type Phantom Emulating Quadrupole-Like Magnetic Field Distribution for Evaluation of Magnetoneurography (2023)

This study proposes a dry-type phantom for evaluating the accuracy of magnetoneurography (MNG). The phantom emulates the quadrupole-like pattern of the typical magnetic field distribution observed in MNG. It is composed of a printed circuit board patterned with long rectangular coils, whose short and long edges measure 5 and 360 mm, respectively. The magnetic field distribution from the dry-type phantom was obtained using a 132-ch MNG system equipped with an array of vector-type superconducting quantum interference device (SQUID) flux sensors, and it showed a clear quadrupole-like pattern. The dry-type phantom is easier to handle, and provides comparable or higher accuracy than that of the previously developed wet-type phantom in terms of goodness-of-fit.
AlGaInP light-emitting diodes with SACNTs as current-spreading layer (2014)

Transparent conductive current-spreading layer is important for quantum efficiency and thermal performance of light-emitting diodes (LEDs). The increasing demand for tin-doped indium oxide (ITO) caused the price to greatly increase. Super-aligned carbon nanotubes (SACNTs) and Au-coated SACNTs as current-spreading layer were applied on AlGaInP LEDs. The LEDs with Au-coated SACNTs showed good current spreading effect. The voltage bias at 20 mA dropped about 0.15 V, and the optical power increased about 10% compared with the LEDs without SACNTs.