gebhart/patrepeval huggingface dataset:
New access to 2-(arylazo)-, 2-(arylhydrazo)-, and 2-aminoindoles, -benzofurans, and -thianaphthenes (1988)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNew access to 2-(arylazo)-, 2-(arylhydrazo)-, and 2-aminoindoles, -benzofurans, and -thianaphthenesTiziana Benincori and Franco SannicoloCite this: J. Org. Chem. 1988, 53, 6, 1309–1312Publication Date (Print):March 1, 1988Publication History Published online1 May 2002Published inissue 1 March 1988https://doi.org/10.1021/jo00241a035RIGHTS & PERMISSIONSArticle Views314Altmetric-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 InReddit PDF (607 KB) Get e-Alerts Get e-Alerts
Acenequinocumulenes: Lateral and Vertical π‐Extended Analogues of Tetracyanoquinodimethane (TCNQ) (2017)

We have designed a series of molecules and developed synthetic methodology that allows for the inclusion of structural diversity along both the lateral and vertical axes of the basic TCNQ skeleton. In the lateral direction, benzoannulation extends the π-system through (hetero)acene formation, whereas incorporation of a [3]cumulene increases delocalization vertically. The potential of these new molecules as semiconductors is explored through UV/Vis spectroscopy, cyclic voltammetry, X-ray crystallography, thin-film formation, and mobility measurements (using space charge limited current measurements).
Electrophilic C–H Borylation and Related Reactions of B–H Boron Cations (2013)

Catalytic procedures are described for aminedirected borylation of aliphatic and aromatic tertiary amine boranes. Sequential double borylation is observed in cases where two or more C-H bonds are available that allow 5-center or 6-center intramolecular borylation. The HNTf<sub>2</sub> catalyzed borylation of benzylamine boranes provides a practical means for the synthesis of ortho-substituted arylboronic acid derivatives, suitable for Suzuki-Miyaura cross-coupling applications.
Oncoplastic Wide Excision (2022)

The technique of therapeutic mammoplasty (TM) has grown in popularity due to its oncological safety record, reduction in radiotherapy side effects and its high aesthetic and patient satisfaction outcome measures. Uniquely, TM offers a reliable volume displacement breast reconstruction to a cohort of patients who would otherwise require mastectomy or significant morbidity incurred with volume replacement techniques. This chapter discusses the importance of pre-operative planning for this advanced oncoplastic technique and describes the author's experience in performing the most commonly used TM techniques. Oncological safety is of paramount concern with TM, with the available evidence indicating that this technique is oncologically safe. TM has many potential benefits beyond the avoidance of a total mastectomy.
FPT Approximation Schemes for Maximizing Submodular Functions (2015)

We investigate the existence of approximation algorithms for maximization of submodular functions, that run in fixed parameter tractable (FPT) time. Given a non-decreasing submodular set function $v: 2^X \to \mathbb{R}$ the goal is to select a subset $S$ of $K$ elements from $X$ such that $v(S)$ is maximized. We identify three properties of set functions, referred to as $p$-separability properties, and we argue that many real-life problems can be expressed as maximization of submodular, $p$-separable functions, with low values of the parameter $p$. We present FPT approximation schemes for the minimization and maximization variants of the problem, for several parameters that depend on characteristics of the optimized set function, such as $p$ and $K$. We confirm that our algorithms are applicable to a broad class of problems, in particular to problems from computational social choice, such as item selection or winner determination under several multiwinner election systems.
A 167-ps 2.34-mW Single-Cycle 64-Bit Binary Tree Comparator With Constant-Delay Logic in 65-nm CMOS (2013)

A single-cycle tree-based 64-bit binary comparator with constant-delay (CD) logic realized in a 65-nm, 1-V CMOS process is presented in this paper. Unlike dynamic logic yet domino-compatible, CD logic predischarges the output to logic “0” and conditionally makes a transition to logic “1” through the critical-path CLK PMOS transistors for an NMOS transistor network. The constant delay (regardless of the fan-in) feature makes it up to 2× faster than a dynamic logic gate during the D-Q mode for a complex logic such as a two-bit binary comparator. The proposed comparator's architecture is divided into two stages, where the first stage adapts a novel tree comparator structure specifically designed for static logic to achieve low-power consumption and the second stage utilizes CD logic to realize high performance without sacrificing the overall energy efficiency. At 1-V supply, the proposed comparator's measured delay is 167 ps, and has an average power and a leakage power of 2.34 mW and 0.06 mW, respectively. At 0.3-pJ iso-energy or 250-ps iso-delay budget, the proposed comparator with CD logic is 20% faster or 17% more energy-efficient compared to a comparator implemented with just the static logic.
Subcube allocation and task migration in hypercube multiprocessors (1994)

Two important issues in managing processors in a hypercube are addressed: subcube allocation and task migration to eliminate the system fragmentation caused by allocation and deallocation of subcubes. It is proven that the subcube allocation strategy using a binary reflected Gray code (BRGC), called the GC strategy, possesses the best subcube recognition ability among all strategies using sequential searches. A binary code (BC) is defined as the binary representation of a nonnegative integer, and an extended binary code (EBC) is obtained by permutating the bits of a BC. Similarly, an extended Gray code (EGC) is obtained from a BRGC. The subcube recognition ability of an allocation strategy using multiple EBCs is analyzed and compared to that using multiple EGCs. >
Thermodynamic analysis of alkali metal complex formation of polymer-bonded crown ether (2017)

The complex formation of two crown ethers with colored alkali metal salts was investigated by UV/Vis spectroscopy. Complexation was accomplished with free benzo-15-crown-5 (B15C5) and 15-crown-5 bonded to a diblock copolymer (Poly15C5). The diblock copolymer was synthesized by two controlled polymerization techniques and copper(i)-catalyzed azide-alkyne cycloaddition. Depending on the inserted cation, 1 : 1- or 1 : 2-complexes are formed. A significant difference of the stability constants was determined by concentration dependence solvent extraction with sodium or potassium salt. For Poly15C5 the stability constants increase for both salts compared to the stability constants of B15C5, which suggests a more effective complexation. Evaluation of the thermodynamics (ΔH, ΔS, ΔG) of cation complexation was achieved by temperature dependence phase extraction on the basis of established thermodynamic equations. Remarkably, in all cases the entropic gain seems to be the major propulsion facilitating the complexation between alkali metal salts and crown ethers. Indeed, by using Poly15C5 a more pronounced dependency of enthalpy and entropy on the complex formation is calculated.
Ontology-based technologies for disaster preparedness, response and recovery (2022)

Natural disasters such as forest fires, earthquakes, floods and heat waves have a tremendous impact on the economy, the environment and the people. Every year, manmade and natural disasters lead to human and property losses and resettlement, the disintegration of infrastructures and degradation of society's resilience. The key role in the efficient management of such a crisis is information and knowledge management. The fusion of heterogeneous information, sensors and data processing is the stepping stone for every system architecture. This paper proposes the use of ontology-based technologies for disaster preparedness, response and recovery to ensure effectiveness. Innovative semantic structures that have been used in relevant EU projects are explored and adapted in the respective framework.
Cytokine control of interstitial collagenase and collagenase-3 gene expression in human chondrocytes (1996)

Page 23579, Fig. 3 legend should read: FIG. 3. Sequences of AP-1 sites from various promoters. Nucleotides common to all AP-1 sites are in bold and represent the consensus sequence. The single base change made in the mutant stromelysin AP-1 site is indicated by an asterisk. Sequences are derived from the following sources: collagenase-1 AP-1 (15), collagenase-3 AP-1 (C. Lopez-Otin, unpublished data), gelatinase B AP-1 (20), stromelysin-1 AP-1 (21), MCP AP-1 (22), metallothionein IIA AP-1 (23), mouse collagenase AP-1 (P. Angel, unpublished data). All sequences are from human genes except mouse collagenase. Page 23581, the Acknowledgments should read: We thank Dr. David Woolley for providing the primary cells, Dr. Peter Angel for the unpublished sequence of the mouse collagenase AP-1 site, Dr. Carlos Lopez-Otin for the unpublished sequence of the human collagenase-3 AP-1 site and for the human collagenase-3 probe, and Dr. Hal Van Wart for his support.
Tree structural watershed for stereo matching (2012)

We present a new method for dense stereo matching based on a tree structural cost volume watershed (TSCVW) and a region combination (RC) process. Given a cost volume as the data cost and an initial segmentation result, the proposed TSCVW method reliably estimates the disparities in a segment by using energy optimization to control plane segmentation and plane fitting. Then the disparities in the incorrectly fitted and occluded regions are refined using our RC process. Experimental results show that our method is very robust to different initial segmentation results and the shape of a segment. The comparison between our algorithm and the current state-of-the-art algorithms on the Middlebury website shows that our algorithm is very competitive.
Characterization of a hamster melanoma-associated ganglioside antigen as 7-O-acetylated disialoganglioside GD3 (1993)

We previously reported a hamster animal model of melanoma in which the tumor tissue expresses gangliosides GM3, GD3, and O-acetyl GD3. This ganglioside pattern is similar to that in human melanomas (Ren, S., A. Slominski, and R. K. Yu. 1989 Cancer Res. 49: 7051). In this study, we isolated and purified these gangliosides using chloroform-methanol extraction, Folch partition, chromatographies on DEAE-Sephadex A-25, and Iatrobeads columns. The yields of gangliosides GM3, GD3, and O-acetyl GD3 were 44.1 mg, 19.6 mg, and 9 mg per 100 g of Ma melanotic melanoma tissues, respectively. The structures of these gangliosides were characterized by periodate oxidation, gas chromatographic (GC) analysis, fast-atom bombardment-mass spectrometry (FAB-MS), and nuclear magnetic resonance (NMR) studies. The structure of hamster melanoma O-acetyl GD3 is different from the 9-O-acetyl GD3 previously reported in human melanoma. The major fatty acids of this ganglioside are C16:0, C18:0, C20:0, C22:0, and C24:0 and the long-chain base is C18-sphingosine.
Sécurité alimentaire et traçabilité (2005)

La décennie 90 a été marquée par plusieurs crises: l'ESB, la présence d'hormones et la crise de la dioxine. La communauté scientifique a réagi en recherchant une meilleure sécurité alimentaire et une traçabilité efficace. La contribution de plusieurs chercheurs de la Faculté des Sciences Agronomiques et du Centre Wallon de Recherches Agronomiques est présentée dans cet exposé.
Nonlinear Fourier Transform for Analysis of Coherent Structures in Dissipative Systems (2019)

The conventional Fourier transform is widely used mathematical methods in science and technology. It allows representing the signal/field under study as a set of spectral harmonics, that it many situations simplify understanding of such signal/field. In some linear equations, where spectral harmonics evolve independently of each other, the Fourier transform provides a straightforward description of otherwise complex dynamics. Something similar is available for certain classes of nonlinear equations that are integrable using the inverse scattering transform [1,2], also known as the nonlinear Fourier transform (NFT). Here we discuss potential of its application in dissipative, non-integrable systems to characterize coherent structures. We present a new approach for describing the evolution of a nonlinear system considering the cubic Ginzburg-Landau Equation (CGLE) as a particularly important example in the context of laser system modeling: i[(∂U)/(∂z)] + <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sup> /2 [(∂ <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> U)/(∂t <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> )] + |U | <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> U -i (σU + α[(∂ <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> U)/(∂t <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> )] + δ|U | <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> U ) = 0.
Telehealth for Family Guidance: Acceptance and Commitment Therapy, Parent-Focused Preference Assessment, and Activity Based Instruction for the Support of Children with Autism Spectrum Disorder and their Families (2020)

A five-stage protocol was used to support board certified behavior analysts providing telehealth support for children with autism spectrum disorder and their families. Stage 1 of the protocol involves two acceptance and commitment therapy exercises. Specifically, the Valued Living Questionnaire is used to identify a family member’s values, and the Bull’s-Eye Values Survey is employed to determine the extent to which a family member is living in accordance with stated values. Stage 2 of the protocol involves administering an adult version of the Meaningful Activity Participation Assessment (MAPA) to identify preferred activities of parents of a child with autism spectrum disorder. During Stage 3 of the protocol, the goals and objectives of a child with autism spectrum disorder are yoked with the preferred activities of a family member in order to promote child–parent engagement. Stage 4 of the protocol is focused on parent-implemented interventions, and Stage 5 of the protocol is designed as a primer for comprehensive support within an acceptance and commitment therapy model. The five-stage protocol provides guidelines for board certified behavior analysts interested in structuring telehealth sessions and optimizing engagement between a family member and a child with autism spectrum disorder.
Knockdown of glycine decarboxylase complex alters photorespiratory carbon isotope fractionation in Oryza sativa leaves (2019)

The influence of reduced glycine decarboxylase complex (GDC) activity on leaf atmosphere CO2 and 13CO2 exchange was tested in transgenic Oryza sativa with the GDC H-subunit knocked down in leaf mesophyll cells. Leaf measurements on transgenic gdch knockdown and wild-type plants were carried out in the light under photorespiratory and low photorespiratory conditions (i.e. 18.4 kPa and 1.84 kPa atmospheric O2 partial pressure, respectively), and in the dark. Under approximately current ambient O2 partial pressure (18.4 kPa pO2), the gdch knockdown plants showed an expected photorespiratory-deficient phenotype, with lower leaf net CO2 assimilation rates (A) than the wild-type. Additionally, under these conditions, the gdch knockdown plants had greater leaf net discrimination against 13CO2 (Δo) than the wild-type. This difference in Δo was in part due to lower 13C photorespiratory fractionation (f) ascribed to alternative decarboxylation of photorespiratory intermediates. Furthermore, the leaf dark respiration rate (Rd) was enhanced and the 13CO2 composition of respired CO2 (δ13CRd) showed a tendency to be more depleted in the gdch knockdown plants. These changes in Rd and δ13CRd were due to the amount and carbon isotopic composition of substrates available for dark respiration. These results demonstrate that impairment of the photorespiratory pathway affects leaf 13CO2 exchange, particularly the 13C decarboxylation fractionation associated with photorespiration.
A 128 × 128 SPAD Motion-Triggered Time-of-Flight Image Sensor With In-Pixel Histogram and Column-Parallel Vision Processor (2020)

A 128 × 128 single-photon avalanche diode (SPAD) motion detection-triggered time-of-flight (ToF) sensor is implemented in STMicroelectronics 40 nm CMOS SPAD foundry process. The sensor combines vision and ToF ranging functions to acquire depth frames only when inter-frame intensity changes are detected. The 40 μm × 20 μm pixels integrate two 16-bit time-gated counters to acquire ToF histograms and repurpose them to compare two vision frames without the requirement for additional out-of-pixel frame memory resources. An embedded column-parallel ToF and vision processor performs on-chip vision frame comparison and binary frame output compression as well as controlling the time-resolved histogram sampling. The sensor achieves a maximum 32.5 kframes/s in vision modality and 500 frames/s in motion detection-triggered ToF over a measured 3.5 m distance with 1.5 cm accuracy. The vision function reduces the sensor power consumption by 70% over continuous ToF operation and allows the sensor to gate the ToF laser emitter to reduce the system power when no motion activity is observed.
Three‐Dimensional Nitrogen and Boron Co‐doped Graphene for High‐Performance All‐Solid‐State Supercapacitors (2012)

A simplified prototype device of high-performance all-solid-state supercapacitors (ASSSs) based on 3D nitrogen and boron co-doped monolithic graphene aerogels (BN-GAs) is demonstrated for the first time. The resulting ASSSs show high specific capacitance, good rate capability, and enhanced energy density or power density. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
Polarization-Conversion Guided Mode (PCGM) technique for exploring thin anisotropic surface layers (2007)

A Polarization-Conversion Guided Mode (PCGM) technique has been developed to quantify optical anisotropy as low as 10-5 for a surface layer only 10 nm thick. The optical geometry consists of an index-fluid matched prism-coupler and an air-gap waveguide comprising the thin sample on a glass plate as the incident surface with a gold reflector forming the other surface of the guide. This allows non-destructive characterization of the optical anisotropy of surface layers. The polarization conversion signal is extraordinarily sensitive. Thus the influence of the polarization purity of the incoming beam, very small twists and/or tilts between the normal to the prism bottom surface and the sample plane, have all been analyzed in detail to allow extraction of the sought for information about the thin layer. Rubbed polyimide thin films and incline-evaporated SiOx layers, both used for liquid crystal alignment, have been examined by this PCGM technique to demonstrate its power.
Write/Erase Cycling Endurance of Memory Cells With SiO&amp;lt;tex&amp;gt;$_2$&amp;lt;/tex&amp;gt;/HfO&amp;lt;tex&amp;gt;$_2$&amp;lt;/tex&amp;gt;Tunnel Dielectric (2004)

The write/erase cycling endurance of low voltage floating-gate memory cells programmed and erased by tunneling through a SiO/sub 2//HfO/sub 2/ dual layer tunnel dielectric stack is investigated. The use of fixed single pulse program and erase conditions leads to fast shifting (after /spl sim/1000 cycles) of the threshold voltage window, so that only a limited number of write/erase cycles can be achieved. Increasing the write and erase duration quickly leads to an excessive erase time so that a different erase method has to be used. Improvement of the erase behavior and cycling endurance has been obtained by a combination of two methods. Inclusion of soft write pulses between the erase pulses reduces the amount of charge trapped in the tunnel dielectric and therefore limits the increase in erase time. Also, the erase voltage can progressively be raised in order to further limit the erase time, leading to an endurance of 10 000 cycles on the considered cells. When combining the SiO/sub 2//HfO/sub 2/ stack with channel hot electron injection so that tunneling is only required in one direction, 100 000 write/erase cycles are demonstrated with minimal change of the memory window.