gebhart/patrepeval huggingface dataset:
Study of the reactivity of the single-chloro-bridged dissymmetric dinuclear rhodium species (CO)2(Cl)Rh(.mu.-Cl)Rh(CO)[PhP(OC(CH3)2CH2)2NH] (1987)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStudy of the reactivity of the single-chloro-bridged dissymmetric dinuclear rhodium species (CO)2(Cl)Rh(.mu.-Cl)Rh(CO)[PhP(OC(CH3)2CH2)2NH]Pierre Brun, Pierre Vierling, and Jean G. RiessCite this: Inorg. Chem. 1987, 26, 9, 1451–1453Publication Date (Print):May 1, 1987Publication History Published online1 May 2002Published inissue 1 May 1987https://pubs.acs.org/doi/10.1021/ic00256a026https://doi.org/10.1021/ic00256a026research-articleACS PublicationsRequest reuse permissionsArticle Views29Altmetric-Citations6LEARN 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-Alertsclose Get e-Alerts
Investigation of the Reactions and Distribution of Polycyclic Aromatic Hydrocarbons and Fullerenes in Extraterrestrial Material (2005)

The work funded by this research grant includes four specific projects: (1) Mapping the spatial distribution of polycyclic aromatic hydrocarbons (PAHs) in a variety of meteoritic samples and comparing this distribution with mineralogical features of the meteorite to determine whether a correlation exists between the two. (2) Developing a method for detection of fullerenes in extraterrestrial samples using microprobe laser-desorption laser-ionization mass spectrometry ( pL2MS) and utilizing this technique to investigate fullerene presence, while exploring the possibility of spatially mapping the fullerene distribution in these samples through in situ detection. (3) Investigating a possible formation pathway for meteoritic and ancient terrestrial kerogen involving the photochemical reactions of PAHs with alkanes under prebiotic and astrophysically relevant conditions. (4) Studying reaction pathways and identifying the photoproducts generated during the photochemical evolution of PAH-containing interstellar ice analogs as part of an ongoing collaboration with researchers at the Astrochemistry Lab at NASA Ames.
Pressure Behavior of Horizontal Wells with Multiple Fractures (1994)

Abstract Drilling horizontal wells to accelerate production and increase recovery efficiency of oil and gas has now become common. With the increasing number of wells, transient well tests have been conducted in many wells with different geological settings. In this paper, we present a number of analytical models for horizontal wells with multiple fractures in homogeneous and laterally composite reservoirs. These solutions are applicable to finite-conductivity transverse fractures, and infinite-conductivity transverse and longitudinal fractures. They may also be used for the fractured reservoirs where the wellbore intersects with multiple fractures. We examine the pressure behavior of horizontal wells with single and multiple fractures in homogeneous systems. It is shown that the wellbore cannot be neglected in the modeling of horizontal wells with fractures unless the fracture conductivity is high. If the fracture permeability (conductivity) variations in different zones are moderate, compared to the formation permeability, the multiple fractures have almost no effect on the pressure behavior of the system; the horizontal well dominates the system's pressure behavior. If the conductivities are high, the intersected fractures will dominate the behavior of the system at early times. It is also shown that multiple finite- and infinite-conductivity transverse fractures may exhibit multiple linear flow regimes before the onset of the first horizontal well radial flow regime.
Disparity estimation and disparity-coherent watermarking (2015)

In the context of stereo video, disparity-coherent watermarking has been introduced to provide superior robustness against virtual view synthesis, as well as to improve perceived fidelity. Still, a number of practical considerations have been overlooked and in particular the role of the underlying depth estimation tool on performances. In this article, we explore the interplay between various stereo video processing primitives and highlight a few take away lessons that should be accounted for to improve performances of future disparity-coherent watermarking systems. In particular, we highlight how lost correspondences during the stereo warping process impact watermark detection, thereby calling for innovative designs.
Magic-wave-inducedS01−P03transition in even isotopes of alkaline-earth-metal-like atoms (2007)

The circular polarized laser beam of the ``magic'' wavelength may be used for mixing the $^{3}P_{1}$ state into the long-living metastable state $^{3}P_{0}$, thus enabling the strictly forbidden $^{1}S_{0}\text{\ensuremath{-}}^{3}P_{0}$ ``clock'' transition in even isotopes of alkaline-earth-metal-like atoms, without a change of the transition frequency. In odd isotopes the laser beam may adjust to an optimum value the linewidth of the clock transition, originally enabled by the hyperfine mixing. We present a detailed analysis of various factors influencing resolution and uncertainty for an optical frequency standard based on atoms exposed simultaneously to the lattice standing wave and an additional ``state-mixing'' wave, including estimations of the ``magic'' wavelengths, Rabi frequencies for the clock and state-mixing transitions, ac Stark shifts for the ground and metastable states of divalent atoms.
Improving Lithium Batteries by Tethering Carbon-Coated LiFePO[sub 4] to Polypyrrole (2006)

The demand for rechargeable lithium batteries, which have ushered in the wireless revolution and have found a place in the hybrid electric vehicle, is rapidly expanding. Commercial use commonly requires high power, high energy density, and high rate capability. However, achieving a high capacity at a high charge/discharge rate has proven difficult. In this paper, we show a remarkable improvement in the rate capability and capacity of cathodes using carbon-coated by replacing the carbon plus Teflon additives with polypyrrole (PPy) bonded to the oxide particles by the carbon coat. An excellent charge/discharge performance at a rate as high as 10C, and even a 3 min (20C) charge, is demonstrated with a cathode containing PPy. Attaching a conductive polymer to an active oxide particle is a general strategy that also promises to enhance the rate capability of other cathode composites used in rechargeable lithium batteries.
Structure−Activity Relationships in a Series of Bisquaternary Bisphthalimidine Derivatives Modulating the Muscarinic M2-Receptor Allosterically (2000)

Hexane-bisammonium-type compounds containing lateral phthalimide moieties are well-established ligands of the common allosteric binding site of muscarinic M(2) receptors. Previous structure-activity relationships (SAR) revealed two positively charged centers and two lateral phthalimide moieties in a defined arrangement to be essential of a high allosteric potency. The purpose of this study was to replace one carbonyl group of the phthalimides with hydrogens, hydroxy, alkoxy, phenyl, benzyl, and benzylidene groups in order to check the influence of these substituents on the allosteric activity in antagonist-linked receptors. The analysis of the quantitative SAR indicated that a high allosteric potency is related to a certain amount of rigidity as well as polarizibility and the ability to form hydrophobic interactions.
Evaluation of a Modified Three Cable Guardrail Adjacent to Steep Slope (2008)

The three cable guardrail system is most commonly used to protect motorists from roadside slopes. Due to the fact that the system is limited to sites where relatively large barrier displacement is acceptable, concern arises when the system must be placed close to steep roadside slopes. The objective of this study was to evaluate a three cable carrier system placed adjacent to 1.5H:1V slopes. The three cable system in this test utilized quarter-post spacing. In addition, the offset from the slope break point was 1,219 mm (4 ft.) One full-scale crash test, a 2,032-kg (4,481-lb) pickup truck impacting at a speed of 99.1 km/h (61.6 mph) and at an angle of 23.6 degrees, was conducted and reported in accordance with the requirements specified in the National Cooperative Highway Research Program (NCHRP) Report Number 350, Recommended Procedures for the Safety Performance Evaluation of Highway Features. Based on the results and analysis of the full scale test, it was determined that the three cable guardrail system with quarter-post spacing and 1,219mm (4ft) offset from the slope break point performed adequately according to NCHRP Report Number 350 TL-3 requirements.
LOW NOx EMISSIONS IN A FUEL FLEXIBLE GAS TURBINE (2004)

In alignment with Vision 21 goals, a study is presented here on the technical and economic potential for developing a gas turbine combustor that is capable of generating less that 2 ppm NOx emissions, firing on either coal synthesis gas or natural gas, and being implemented on new and existing systems. The proposed solution involves controlling the quantity of H2 contained in the fuel. The presence of H2 leads to increased flame stability such that the combustor can be operated at lower temperatures and produce less thermal NOx. Coal gas composition would be modified using a water gas shift converter, and natural gas units would implement a catalytic partial oxidation (CPOX) reactor to convert part of the natural gas feed to a syngas before fed back into the combustor. While both systems demonstrated technical merit, the economics involved in implementing such a system are marginal at best. Therefore, Praxair has decided not to pursue the technology any further at this time.
Monovalent Cations Sequester within the A-Tract Minor Groove of [d(CGCGAATTCGCG)]2, (2000)

ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTMonovalent Cations Sequester within the A-Tract Minor Groove of [d(CGCGAATTCGCG)]2†,§Kristen Kruger Woods, Lori McFail-Isom, Chad C. Sines, Shelley B. Howerton, Rasheeda K. Stephens, and Loren Dean WilliamsView Author Information School of Chemistry & Biochemistry Georgia Institute of Technology Atlanta, Georgia 30332-0400 Cite this: J. Am. Chem. Soc. 2000, 122, 7, 1546–1547Publication Date (Web):February 4, 2000Publication History Received11 June 1999Published online4 February 2000Published inissue 1 February 2000https://pubs.acs.org/doi/10.1021/ja9919579https://doi.org/10.1021/ja9919579rapid-communicationACS PublicationsCopyright © 2000 American Chemical SocietyRequest reuse permissionsArticle Views210Altmetric-Citations63LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-AlertscloseSupporting Info (1)»Supporting Information Supporting Information SUBJECTS:Cations,Cesium,Electron density,Molecules,Nucleic acid structure Get e-Alerts
Artifact characterization and reduction in scanning X-ray Zernike phase contrast microscopy (2015)

Zernike phase contrast microscopy is a well-established method for imaging specimens with low absorption contrast. It has been successfully implemented in full-field microscopy using visible light and X-rays. In microscopy Cowley's reciprocity principle connects scanning and full-field imaging. Even though the reciprocity in Zernike phase contrast has been discussed by several authors over the past thirty years, only recently it was experimentally verified using scanning X-ray microscopy. In this paper, we investigate the image and contrast formation in scanning Zernike phase contrast microscopy with a particular and detailed focus on the origin of imaging artifacts that are typically associated with Zernike phase contrast. We demonstrate experimentally with X-rays the effect of the phase mask design on the contrast and halo artifacts and present an optimized design of the phase mask with respect to photon efficiency and artifact reduction. Similarly, due to the principle of reciprocity the observations and conclusions of this work have direct applicability to Zernike phase contrast in full-field microscopy as well.
A modified Bischler-Napieralski procedure for the synthesis of 3-aryl-3,4-dihydroisoquinolines (1991)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA modified Bischler-Napieralski procedure for the synthesis of 3-aryl-3,4-dihydroisoquinolinesRobert D. Larsen, Robert A. Reamer, Edward G. Corley, Paul Davis, Edward J. J. Grabowski, Paul J. Reider, and Ichiro ShinkaiCite this: J. Org. Chem. 1991, 56, 21, 6034–6038Publication Date (Print):October 1, 1991Publication History Published online1 May 2002Published inissue 1 October 1991https://doi.org/10.1021/jo00021a014RIGHTS & PERMISSIONSArticle Views2788Altmetric-Citations93LEARN 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 InReddit PDF (697 KB) Get e-AlertsSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts
Conformer-Kernel with Query Term Independence at TREC 2020 Deep Learning Track. (2020)

We benchmark Conformer-Kernel models under the strict blind evaluation setting of the TREC 2020 Deep Learning track. In particular, we study the impact of incorporating: (i) Explicit term matching to complement matching based on learned representations (i.e., the “Duet principle”), (ii) query term independence (i.e., the “QTI assumption”) to scale the model to the full retrieval setting, and (iii) the ORCAS click data as an additional document description field. We find evidence which supports that all three aforementioned strategies can lead to improved retrieval quality.
A single-crystal copper (111) current collector for anode-free lithium batteries (2022)

Anode-free lithium (Li) batteries that function via direct Li plating/stripping from cathodes have led to a surge of interest in metallic lithium as an ideal negative electrode. Despite its great promise, its practical use has been hampered by dendritic growth of Li metal, which results in low coulombic efficiencies and cell shorting. In addition, such dendritic growth of Li makes a larger unoccupied space in the battery, which causes dramatic reduction in volumetric energy density. We report that Li plating is a collective motion of Li adatoms influenced by the crystallographic orientation of the Cu substrate, and that Li adatoms can be redistributed by interacting with individual Cu grains via surface migration. By comparing centimeter-sized single-crystal Cu(111) and Cu(410) foils, we found that Cu(111) foil inhibits dendritic growth of metallic Li and that, per our modeling, this is likely due to the near-zero migration barrier of Li adatoms. We suggest that understanding, and ‘controlling’ the Li adatom surface migration ‘behavior’ opens a new avenue for achieving high-performance anode-free Li batteries.
INITIATION OF DEGRADATION IN POLYCRYSTALLINE SODIUM- BETA ALUMINA ELECTROLYTES (1980)

Sodium-beta alumina solid electrolytes degrade during use in sodium sulfur cells. The degradation can take two forms: Mode I degradation involving the rapid propagation of macroscopic cracks driven by cathodic deposition of sodium in them; and Mode II degradation involving a slow degradation due to electron injection from the Na/..beta.. alumina contact. The initiation stage of Mode I is the most important one since cracks propagate rapidly once they are formed. The significance of the local microstructure on the Mode I initiation is discussed. It appears that grain boundaries can be favorable sites for Mode I failure initiation.
Plasmon‐Enhanced Single Extracellular Vesicle Analysis for Cholangiocarcinoma Diagnosis (2023)

Cholangiocarcinoma (CCA) is a fatal disease often detected late in unresectable stages. Currently, there are no effective diagnostic methods or biomarkers to detect CCA early with high confidence. Analysis of tumor-derived extracellular vesicles (tEVs) harvested from liquid biopsies can provide a new opportunity to achieve this goal. Here, an advanced nanoplasmonic sensing technology is reported, termed FLEX (fluorescence-amplified extracellular vesicle sensing technology), for sensitive and robust single EV analysis. In the FLEX assay, EVs are captured on a plasmonic gold nanowell surface and immunolabeled for cancer-associated biomarkers to identify tEVs. The underlying plasmonic gold nanowell structures then amplify EVs' fluorescence signals, an effective amplification process at the single EV level. The FLEX EV analysis revealed a wide heterogeneity of tEVs and their marker levels. FLEX also detected small tEVs not detected by conventional EV fluorescence imaging due to weak signals. Tumor markers (MUC1, EGFR, and EPCAM) are identified in CCA, and this marker combination is applied to detect tEVs in clinical bile samples. The FLEX assay detected CCA with an area under the curve of 0.93, significantly better than current clinical markers. The sensitive and accurate nanoplasmonic EV sensing technology can aid in early CCA diagnosis.
Three-Phase DC-Type Isolated Electric Vehicle Charger Featuring Zero Voltage Switching (2019)

This work presents a flexible isolated soft-switched AC-DC converter well-suited for implementing a Fast DC-type electric vehicle battery charger. The proposed topology is based on a modified direct-conversion galvanic isolated AC-DC forward-type converter featuring zero-voltage-switching or ZVS. The proposed circuit modifications allows the system to perform well in terms of losses when the converter is designed to cope with a wide range of electric vehicle battery voltages, e.g. 200 to 1000 V. In fact, the new functionality added limits the typical large free-wheeling times which would occurs in the state-of-art solutions for low battery voltage levels. This yield to great reduction on conduction losses in the semiconductors. The paper gives a detailed description of the proposed circuit, and suited modulation and feedback control schemes. Simulation results are shown attesting the feasibility and also verifies the advantages of the presented power converter for a 50 kW application.
Weighted Sum-Rate Maximization for Rate-Splitting Multiple Access Based Secure Communication (2022)

As investigations on physical layer security evolve from point-to-point systems to multi-user scenarios, multi-user interference (MUI) is introduced and becomes an unavoidable issue. Different from treating MUI totally as noise in conventional secure communications, in this paper, we propose a rate-splitting multiple access (RSMA)-based secure beamforming design, where user messages are split and encoded into common and private streams. Each user not only decodes the common stream and the intended private stream, but also tries to eavesdrop the private streams of other users. We formulate a weighted sum-rate (WSR) maximization problem subject to the secrecy rate requirements of all users. To tackle the non-convexity of the formulated problem, a successive convex approximation (SCA)-based approach is adopted to convert the original non-convex and intractable problem into a low-complexity suboptimal iterative algorithm. Numerical results demonstrate that the proposed secure beamforming scheme outperforms the conventional multi-user linear precoding (MULP) technique in terms of the WSR performance while ensuring user secrecy rate requirements.
Duplex and triple helix formation with dA19 and dT19: thermodynamic parameters from calorimetric, NMR, and circular dichroism studies (1993)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDuplex and triple helix formation with dA19 and dT19: thermodynamic parameters from calorimetric, NMR, and circular dichroism studiesHarry P. Hopkins, David D. Hamilton, W. David Wilson, and Gerald ZonCite this: J. Phys. Chem. 1993, 97, 24, 6555–6563Publication Date (Print):June 1, 1993Publication History Published online1 May 2002Published inissue 1 June 1993https://pubs.acs.org/doi/10.1021/j100126a036https://doi.org/10.1021/j100126a036research-articleACS PublicationsRequest reuse permissionsArticle Views123Altmetric-Citations23LEARN 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