gebhart/patrepeval huggingface dataset:
The .pi.-.pi. interactions and bandwidths in molecular metals. A chemical, structural, photoelectron spectroscopic, and Hartree-Fock-Slater study of monomeric and cofacially joined dimeric silicon phthalocyanines (1984)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe .pi.-.pi. interactions and bandwidths in molecular metals. A chemical, structural, photoelectron spectroscopic, and Hartree-Fock-Slater study of monomeric and cofacially joined dimeric silicon phthalocyaninesE. Ciliberto, K. A. Doris, W. J. Pietro, G. M. Reisner, D. E. Ellis, I. Fragala, F. H. Herbstein, M. A. Ratner, and T. J. MarksCite this: J. Am. Chem. Soc. 1984, 106, 25, 7748–7761Publication Date (Print):December 1, 1984Publication History Published online1 May 2002Published inissue 1 December 1984https://pubs.acs.org/doi/10.1021/ja00337a018https://doi.org/10.1021/ja00337a018research-articleACS PublicationsRequest reuse permissionsArticle Views1013Altmetric-Citations107LEARN 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
Platinum–Nickel Nanowires and Nanotubes Arrays as Carbon-Free Cathodes for the Polymer Electrolyte Membrane Fuel Cell (2022)

The cathode is the most crucial component of the polymer electrolyte membrane fuel cell (PEMFC) because it is the most limiting in terms of performance, durability, and cost. Regarding the performance, the main losses are due to the cathode because of the negative coupling between a sluggish oxygen reduction reaction (ORR) and H+ and O2 transport loss issues. Therefore, many efforts have been conducted on the one hand to increase the kinetic of the ORR by developing a catalyst with improved activity and stability. On the other hand, attempts have been made to reduce mass transport losses in the cathode by tuning its nanostructure. This paper describes a multistep process to nanostructure the electrocatalyst in the view of simultaneously benefiting from enhanced activity toward the ORR and reduced O2 transport limitations. Thus, original carbon-free electrode’s architectures made of organized and well-ordered and oriented PtNi nanowires (PtNiNWs) and nanotubes (PtNiNTs) directly embedded onto a Nafion membrane were developed. Here, the nanotubes were templated from Ni nanowires grown on an anodic aluminum oxide (AAO) template. The fabrication process was optimized to improve the quality of the nanotubes and their integration into the membrane: the process includes thermal treatment in a H2/Ar environment and an acid leaching step as key steps to obtain the desired structure. After the electrodes were integrated in a complete membrane-electrode assembly (MEA), we tested the performance and durability of these nanostructures under real operating conditions. We compared the results to a Pt/C conventional electrode at low Pt loading (∼35 μgPt/cm2) exhibiting a roughness factor close to that of PtNiNWs and PtNiNTs electrodes. Results have shown a great improvement in the mass activity and stability of PtNiNTs electrodes in an accelerated stress test. Also, they have shown a significant sensitivity toward relative humidity variation.
Order—Disorder Conformational Transitions of Carbohydrate Polymers: The Calorimetry Contribution to Understand Polysaccharide Solution Properties (2005)

Abstract For Abstract see ChemInform Abstract in Full Text.
The Temporal Structure of Narratives: A Semantic Approach (1995)

. Computing the temporal structure of narratives is an important milestone in understanding stories and discourses. We propose structured representations for events based on their algebraic properties. We use these representations along with the situation type and aspect of the predicates involved to give detailed semantic postulates for various temporal connectives. These postulates---more detailed than previously proposed---are developed in conjunction with an analysis of a story from the New York Times. This story was proposed as a challenge to NL systems. 1. Introduction Much research in Computational Linguistics has been recently focused on the structure of events and their semantic interpretation (Grasso et al., 1990; Moens and Steedman, 1988; Passonneau, 1988; Eberle and Kasper, 1989; Lascarides and Asher, 1993a; Kamp, 1991; Terenziani and Torasso, 1991). Determining the structure of events is a key prerequisite to solving the problem of constructing appropriate representations...
Soft Materials with Recoverable Shape Factors from Extreme Distortion States (2016)

Elastomeric polysiloxane nanocomposites with elongations of >5000% (more than 3× greater than any previously reported material) with excellent shape recovery are presented. Highly deformable materials are desirable for the fabrication of stretchable implants and microfluidic devices. No crosslinking or domain formation is observed by a variety of analytical techniques, suggesting that their elastomeric behavior is caused by polymer chain entanglements.
Diversity performance of modurated scattering array antenna (2007)

The diversity performance of the modurated scattering array antenna (MSAA) with various array spacing is measured in Rayleigh fading environment to investigate experimentally the relation between the array spacing and the diversity performance of the MSAA. A 2-element modulated scattering monopole array antenna with various array spacing which is supposed to be used for mobile handset applications is used as the measurement model. It is found that the diversity performance of the MSAA can be improved by reducing the array spacing as small as about 0.2 wavelength.
A 1V 2GHz CMOS up-converter using self-switching mixers (2005)

A 2 GHz up-converter uses 0.25 /spl mu/m CMOS. Current adding and self-switching mixers are used for 1 V operation. A -40 dBc LO leakage within a 20 mV offset is achieved using a DC offset canceller. The measurement results at 1 V supply are 6.7 dB conversion gain, 6.5 dBm OIP3, /spl plusmn/2 dB gain deviation from -33 to 75/spl deg/, and 49 mW consumption.
An altered T2β translocase of the glucose-6-phosphatase system in the membrane of the endoplasmic reticulum from livers of Ehrlich-ascites-tumour-bearing mice (1995)

The inhibitory interactions of orthophosphate (P1) with the glucose-6-phosphatase system of intact microsomes derived from the livers of normal and Ehrlich-ascites-tumour-bearing mice reveal the appearance of a novel form of the T2 beta translocase component of the glucose-6-phosphatase system in tumour-stressed mice. Kinetic studies, with and without 20 mM P1, show a strictly classical competitive inhibition, with a K1,P1 of 4.2 mM, with disrupted microsomes from both control and tumour-bearing mouse liver. Inhibition was also observed with intact microsomes from livers of control mice, and contributions by both competitive and non-competitive components of inhibition were quantified by calculation of Kis,P1 and Kii,P1 values respectively. However, little inhibition was noted with intact microsomes from the livers of tumour-bearing mice. It is concluded that this novel form of T2 beta is less able to transport Pi, from the cytosol to the endoplasmic reticulum lumen, perhaps because of the tumour-related increased Km for Pi transport in this direction.
Unsupervised discovery of solid-state lithium ion conductors (2019)

Although machine learning has gained great interest in the discovery of functional materials, the advancement of reliable models is impeded by the scarcity of available materials property data. Here we propose and demonstrate a distinctive approach for materials discovery using unsupervised learning, which does not require labeled data and thus alleviates the data scarcity challenge. Using solid-state Li-ion conductors as a model problem, unsupervised materials discovery utilizes a limited quantity of conductivity data to prioritize a candidate list from a wide range of Li-containing materials for further accurate screening. Our unsupervised learning scheme discovers 16 new fast Li-conductors with conductivities of 10<sup>-4</sup>-10<sup>-1</sup> S cm<sup>-1</sup> predicted in ab initio molecular dynamics simulations. These compounds have structures and chemistries distinct to known systems, demonstrating the capability of unsupervised learning for discovering materials over a wide materials space with limited property data.
A New Strategy for the Synthesis of Valuable Benzenoid Aromatics from Bioderived 5-Hydroxymethylfurfural (HMF) under Mild Conditions (2022)

Abstract To mitigate the effects of global warming, synthesis of aromatic chemicals that play indispensable roles in our daily lives from renewable resources is of great importance. Herein, we present a new strategy to synthesize bio-based C6-aromatics from 5-hydroxymethylfurfural (HMF) under very mild conditions. The versatile bio-based intermediate 2,5-dioxohexanal (DOH) containing three carbonyl groups was successfully synthesized from HMF in high yield. Simple intramolecular aldol condensation of DOH and secondary amines, depending on the acid, selectively produced a range of bio-based 4-substituted phenols and 1,4-di-(dialkylamino)benzenes (Wurster’s blue analogues) in satisfactory yields. In the absence of amines, the industrially important hydroquinone was also synthesized from DOH under acidic condition. Using a similar approach, catechol was prepared from HMF via 4,5-dioxohexanal (DOA) as intermediate.
Synthesis and use of (perfluoroaryl) fluoro-aluminate anion (2023)

A trityl perfluorophenyl alumninate such as tris(2,2',2"-nonafluorobiphenyl)-fluoroaluminate (PBA.sup..crclbar.) and its role as a cocatalyst in metallocene-mediated olefin polymerization is disclosed. Gallium and indium analogs are also disclosed, as are analogs with different anyl groups or different numbers of flourine atoms thereon.
Alkyl chain length-dependent surface reaction of dodecahydro-N-alkylcarbazoles on Pt model catalysts (2014)

The concept of liquid organic hydrogen carriers (LOHC) holds the potential for large scale chemical storage of hydrogen at ambient conditions. Herein, we compare the dehydrogenation and decomposition of three alkylated carbazole-based LOHCs, dodecahydro-N-ethylcarbazole (H12-NEC), dodecahydro-N-propylcarbazole (H12-NPC), and dodecahydro-N-butylcarbazole (H12-NBC), on Pt(111) and on Al2O3-supported Pt nanoparticles. We follow the thermal evolution of these systems quantitatively by in situ high-resolution X-ray photoelectron spectroscopy. We show that on Pt(111) the relevant reaction steps are not affected by the different alkyl substituents: for all LOHCs, stepwise dehydrogenation to NEC, NPC, and NBC is followed by cleavage of the C-N bond of the alkyl chain starting at 380-390 K. On Pt/Al2O3, we discern dealkylation on defect sites already at 350 K, and on ordered, (111)-like facets at 390 K. The dealkylation process at the defects is most pronounced for NEC and least pronounced for NBC.
Novel design of RFID UHF passive tag for wideband applications by direct and contactless chip connection (2012)

In this paper, we present two different designs for Ultra High Frequency (UHF) Radio Frequency Identification (RFID) passive tags. The first proposed design has been mounted on AK3 Tagsys <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">®</sup> loop, which is a small loop antenna already connected to the chip while the second approach is connected directly with RFID chip. The optimized designs have compact size and bandwidth for worldwide UHF RFID applications (860MHz to 960 MHz). The advantages and disadvantages of each approach will be also discussed. From the experimental results, these designs have the acceptable read-range for ETSI regulations of RFID (9.6m and 5.97m) and can be applied for real-world applications. However, the calibration between the simulation and the characterization in order to remove the tolerance of fabrication process should be executed in future steps to obtain the best performance by improving the proposed designs.
Video coding and transport layer techniques for H.264/AVC-based transmission over packet-lossy networks (2004)

Standard compliant enhancements of the emerging H.264/AVC coding algorithm for transmission over lossy IP-based networks are described with the error resilience features being presented in greater detail. Standard compliant encoder and decoder enhancements as well as the exploitation of transport layer mechanisms to improve the quality in packet lossy environments are presented. Different schemes are compared and appropriate experimental results based on common test conditions are discussed. Finally, the selection of suitable features is discussed.
eyeView (2005)

In this paper, we describe the design of eyeView, a video conferencing system that uses participant looking behavior to determine the size of online video conferencing windows. The system uses an elastic windowing algorithm that enlarges the image of the person most looked at by others, while maintaining a contextual view of other remote participants. eyeView measures interest by gauging whom participants look at using an eye tracker embedded in the display. Users can enter side conversations by looking at each other, and pressing the space bar. Cocktail-party filtering is aided by attenuating audio sources outside the social network constituted by glances between participants. By allocating both screen and audio real estate according to the joint attention of participants, eyeView supports smooth allocation of focus on the speaker, while maintaining awareness of the group.
Suitability of 3D-Printed Root Models for the Development of Transcatheter Aortic Root Repair Technologies (2018)

Transcatheter aortic root repair (TARR) is still not available because of the complex anatomy. In order to develop future TARR technologies, a human-derived bench test model is required before performing animal tests. For this purpose, we aimed to validate computed tomography (CT)-derived 3D-printed root models for TARR technologies. Four human CT-derived roots were printed using different resins: Visijet M3 Crystal, Photopolymer gel SUP705, Formlabs flexible resin, and Materialise HeartPrint Flex. A stress test was performed using a 26-mm balloon-expandable Sapien valve deployed in aortic position. The too rigid Visijet M3 Crystal was not tested. Among the others, all but one (HeartPrint Flex, Materialise, Leuven, Belgium) ruptured during the test showing low wall resistances. Further tests were then performed in two roots made of HeartPrint Flex resin. The anatomic validation was performed comparing human CT scan-derived 3D reconstructions and CT scan measurements: a mean difference of 0.57 ± 0.4 mm for aortic annulus diameter and for the distance between the aortic annulus and the coronary ostia was measured. Concerning the coronary arteries, they are of paramount importance for new TARR technologies, and therefore, we tested the coronary flows of the HeartPrint Flex root at different pressure levels. At 60 mm Hg, right and left mean adjusted coronary flows were 471 and 663 ml/min; at 80 mm Hg, right and left mean coronary flows were 551 and 777 ml/min; and at 100 mm Hg, right and left mean coronary flows were 625 and 858 ml/min. In our study, 3D-printed root models correlate well with human anatomy and guarantee physiologic coronary flows for TARR technologies.
Different Modes of Variability over the Tasman Sea: Implications for Regional Climate* (2014)

Abstract A new approach is used to detect atmospheric teleconnections without being bound by orthogonality (such as empirical orthogonal functions). This method employs negative correlations in a global dataset to detect potential teleconnections. One teleconnection occurs between the Tasman Sea and the Southern Ocean. It is related to El Niño–Southern Oscillation (ENSO), the Indian Ocean dipole (IOD), and the southern annular mode (SAM). This teleconnection is significantly correlated with SAM during austral summer, fall, and winter, with IOD during spring, and with ENSO in summer. It can thus be described as a hybrid between these modes. Given previously found relationships between IOD and ENSO, and IOD’s proximity to the teleconnection centers, correlations to IOD are generally stronger than to ENSO. Increasing pressure over the Tasman Sea leads to higher (lower) surface temperature over eastern Australia (the southwestern Pacific) in all seasons and is related to reduced surface temperature over Wilkes Land and Adélie Land in Antarctica during fall and winter. Precipitation responses are generally negative over New Zealand. For one standard deviation of the teleconnection index, precipitation anomalies are positive over Australia in fall, negative over southern Australia in winter and spring, and negative over eastern Australia in summer. When doubling the threshold, the size of the anomalous high-pressure center increases and annual precipitation anomalies are negative over southeastern Australia and northern New Zealand. Eliassen–Palm fluxes quantify the seasonal dependence of SAM, ENSO, and IOD influences. Analysis of the dynamical interactions between these teleconnection patterns can improve prediction of seasonal temperature and precipitation patterns in Australia and New Zealand.
Plants with genetically modified events combined by conventional breeding: An assessment of the need for additional regulatory data (2010)

Crop varieties with multiple GM events combined by conventional breeding have become important in global agriculture. The regulatory requirements in different countries for such products vary considerably, placing an additional burden on regulatory agencies in countries where the submission of additional data is required and delaying the introduction of innovative products to meet agricultural needs. The process of conventional plant breeding has predictably provided safe food and feed products both historically and in the modern era of plant breeding. Thus, previously approved GM events that have been combined by conventional plant breeding and contain GM traits that are not likely to interact in a manner affecting safety should be considered to be as safe as their conventional counterparts. Such combined GM event crop varieties should require little, if any, additional regulatory data to meet regulatory requirements.
ChemInform Abstract: A Second Generation Pyranose‐Based Approach to the F Ring (C38‐C45) of Altohyrtin A. (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.
Modified Corporoplasty for the Treatment of Penile Curvature (1990)

A technique based on the Heineke-Mikulicz principle was used to straighten penile curvature instead of Nesbit corporoplasty. By horizontally closing the longitudinal incisions the longer portion of the tunica albuginea is made equal in length to the shorter side. This technique achieves the same results as Nesbit corporoplasty in a simpler manner. Because of the distance between the longitudinal incision and the neurovascular bundle or corpus spongiosum these structures become less susceptible to injuries during an operation and need not be mobilized. Our experience with 10 cases treated with this technique is presented.
Argus II Retinal Prosthesis Implantation Using Three-Dimensional Visualization System (2018)

Rachitskaya, Aleksandra MD; Lane, Leslie CST; Ehlers, Justis MD; DeBenedictis, Meghan MS, MEd; Yuan, Alex MD, PhDEditor(s): Williams, George A. Author Information
Size Distribution and Magnetic Property of Co-Pt Dots Fabricated by Self-Assembled Polymer Mask (2010)

Co-Pt dot arrays were prepared by ion milling etching using a self-assembled diblock copolymer mask. Two samples with different diameter of 24 nm and 38 nm, and similar size dispersion of 13-14 % were fabricated. The Co-Pt dots were indicated to have damaged portion, which has reversible magnetic propertiy, from the difference between the dc-demagnetization (DCD) curve and the hysteresis curve. It is estimated that the depth of the damaged portion is about 3 nm from the sidewall surface of the dot. The Switching Field Distribution (SFD) was roughly estimated by fitting the DCD curve. The DCD curve was successfully fitted by two SFD curves with high and low Hc's. The SFD curves at high-Hc are supposed to reflect the intrinsic SFD of the dots, and they show similar SFD of 12-15 % in spite of difference in the dot size.
ChemInform Abstract: A Stereoselective Total Synthesis of (‐)‐Andrachcinidine (VI) via an Olefin Cross‐Metathesis Protocol. (2008)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 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.
Formalizing and verifying protocol refinements (2013)

A (business) protocol describes, in high-level terms, a pattern of communication between two or more participants, specifically via the creation and manipulation of the commitments between them. In this manner, a protocol offers both flexibility and rigor: a participant may communicate in any way it chooses as long as it discharges all of its activated commitments. Protocols thus promise benefits in engineering cross-organizational business processes. However, software engineering using protocols presupposes a formalization of protocols and a notion of the refinement of one protocol by another. Refinement for protocols is both intuitively obvious (e.g., PayViaCheck is clearly a kind of Pay ) and technically nontrivial (e.g., compared to Pay , PayViaCheck involves different participants exchanging different messages). This article formalizes protocols and their refinement. It develops Proton, an analysis tool for protocol specifications that overlays a model checker to compute whether one protocol refines another with respect to a stated mapping. Proton and its underlying theory are evaluated by formalizing several protocols from the literature and verifying all and only the expected refinements.
Produktivität der Wälder (2019)

Die Kohlenstoffi nventur 2017 liefert nicht nur Zahlen zum Kohlenstoff, der in Waldern oder Holz gebunden wurde, sondern auch aktuelle Ergebnisse zur Leistung der Walder bezuglich der Holzproduktion. Trotz der gegenuber
der BWI 2012 deutlich geringeren Stichprobendichte, konnen einige Kennzahlen fur Baumarten und Altersklassen zum Zustand 2017 und zur Entwicklung in der Periode 2012 bis 2017 vorgestellt werden. Sie bestatigen grostenteils die Trends der letzten Jahre. Sie beinhalten jedoch nicht die Schadereignisse der letzten zwei Jahre.