gebhart/patrepeval huggingface dataset:
Asymmetric Synthesis of α‐Aminophosphonic Acids by Cycloaddition of <i>N</i>‐Glycosyl‐<i>C</i>‐dialkoxyphosphonoylnitrones (1982)

Abstract Addition of dialkyl phosphites to the nitrone 6 , formed in situ from the oxime 5 and formaldehyde gave the hydroxylamines 7 (86%) and 8 (88%), which reacted with p ‐benzoquinone in the presence of ethylene via the C ‐dialkoxyphosphonoylnitrones 9 and 10 to yield the cycloaddition products 11 – 14 (80–85%) with a diastereoselectivity of about 50%. The cycloaddition products were transformed into the monoisopropylidene derivatives 15 – 18 and the diacetates 19 – 22 . Comparison of the NMR spectra and the specific rotations of the compounds 19 – 22 with those of the corresponding α‐ammo‐acid derivatives 23 – 26 of known configuration indicated preferential formation of the L ‐isomers. The cycloaddition products were transformed in good yield into the L ‐α‐aminophosphonic acids 29 , 30 , 36 , and 39 .
UNDERSTANDING OF SUSPENSION PLASMA SPRAYING (2004)

The aim of this paper is to present the recent advances regarding the Suspension Plasma Spraying process (SPS). The latter is devoted to synthesize finely structured coatings which are of great interest for the electrolytes (of low thickness, 20-30 μm) of Solid Oxide Fuel Cells (SOFC). Powders of Yttria (13.5wt%) Stabilised Zirconia (YSZ) are dispersed in ethanol to produce a stable suspension. The latter is injected by using a mechanical injection into a plasma jet generated by a DC plasma torch. Four centimetre square coatings are built with a deposition efficiency ranging between 50 and 60 % and a deposition rate up to 15 μm.h−1.m−2. The injection pressure of suspensions is optimized by using a pulsed infra-red illumination of the atomization processes of suspensions which is observed with a fast shutter camera. The influences of the preheating and roughness of the substrates, the plasma gas composition and the particle size distribution on the flattening degree of collected splats are investigated. Moreover, the effect of these experimental parameters on the coating microstructures is then studied. It is shown that substrates have to be polished and preheated to enable the most favorable flattening of splats. Moreover, the particle size distribution of powder in suspension has to be narrow with a size adapted to the spraying conditions, for example, centered on about l μm for a plasma enthalpy of 17.5 MJ.kg−1. The results about splats are confirmed when analyzing coating microstructures which present micro-sized porosity.
Extracted-Pole Filter Manifold Multiplexing (1982)

A transformation method is introduced for enabling filters of the extracted-pole variety to be match-multiplexed onto a manifold using standard waveguide multiplexer computer programs. Thus the advantages that accrue from the extracted-pole realization for filters may now be extended to multiplexers, which will be particularly useful in narrow-band high-power low-loss multiplexing applications. The measured performance of a 12-GHz contiguous-channel quadraplexer comprising TE/sub 011/ cavity extracted-pole elliptic filters is presented, demonstrating the very low insertion losses attainable with this form of realization. Since the majority of applications envisaged for this type of multiplexer is in high-power output circuitry, a discussion on thermal aspects is included.
The random camera, the coded aperture camera, and other cameras (2007)

I'll describe two cameras and a comparison of many cameras. In the random camera, we use a lens which creates a pseudo-random relationship between incoming light rays and resulting sensor locations. We studied various properties (both good and bad) of the resulting camera and have built a prototype. The coded aperture camera is a conventional SLR camera but with a coded pattern of holes in the aperture. This gives a depthdependent blur which is both easy to identify and easy to deblur, allowing us to estimate, from the captured image, both an all-focus image and (roughly) the depth everywhere. Finally, we analyze cameras as linear projections of the 4-d lightfield and develop a Bayesian framework to study how well any given camera can recover the incident lightfield from its data. This gives a common framework in which to compare the performance of ordinary lenses, stereo cameras, random cameras, lenticular arrays, pinhole cameras, coded aperture cameras, etc.Joint work with Fredo Durand, Rob Fergus, Anat Levin, and Antonio Torralba.
IETF Standardization in the Field of the Internet of Things (IoT): A Survey (2013)

Smart embedded objects will become an important part of what is called the Internet of Things. However, the integration of embedded devices into the Internet introduces several challenges, since many of the existing Internet technologies and protocols were not designed for this class of devices. In the past few years, there have been many efforts to enable the extension of Internet technologies to constrained devices. Initially, this resulted in proprietary protocols and architectures. Later, the integration of constrained devices into the Internet was embraced by IETF, moving towards standardized IP-based protocols. In this paper, we will briefly review the history of integrating constrained devices into the Internet, followed by an extensive overview of IETF standardization work in the 6LoWPAN, ROLL and CoRE working groups. This is complemented with a broad overview of related research results that illustrate how this work can be extended or used to tackle other problems and with a discussion on open issues and challenges. As such the aim of this paper is twofold: apart from giving readers solid insights in IETF standardization work on the Internet of Things, it also aims to encourage readers to further explore the world of Internet-connected objects, pointing to future research opportunities.
A 3‐year clinical follow‐up study of pulpotomized primary molars treated with the formocresol technique (1975)

The purpose of the present investigation was to evaluate the prognosis of primary molars treated with pulpotomy employing formocresol. The material consisted of 98 primary molars. The study included clinical and radiographic observations 3, 12, 24 and 36 months after treatment. The survival rate at the 3-month follow-up was 91%, whereas the rate was 83%, 78% and 70% - 12, 24 and 36 months respectively after the treatment. The results were computed according to the life table method.
Metal complexes of 1,4,8,11-tetramethyl-1,4,8,11-tetraazacyclotetradecane, N-tetramethylcyclam (1973)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMetal complexes of 1,4,8,11-tetramethyl-1,4,8,11-tetraazacyclotetradecane, N-tetramethylcyclamE. Kent Barefield and Frank WagnerCite this: Inorg. Chem. 1973, 12, 10, 2435–2439Publication Date (Print):October 1, 1973Publication History Published online1 May 2002Published inissue 1 October 1973https://pubs.acs.org/doi/10.1021/ic50128a042https://doi.org/10.1021/ic50128a042research-articleACS PublicationsRequest reuse permissionsArticle Views1561Altmetric-Citations143LEARN 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
Synthesis and nuclear magnetic resonance investigation of some fluorothiophenes (1971)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and nuclear magnetic resonance investigation of some fluorothiophenesRobert D. Schuetz and George P. NillesCite this: J. Org. Chem. 1971, 36, 15, 2188–2190Publication Date (Print):July 1, 1971Publication History Published online1 May 2002Published inissue 1 July 1971https://pubs.acs.org/doi/10.1021/jo00814a036https://doi.org/10.1021/jo00814a036research-articleACS PublicationsRequest reuse permissionsArticle Views241Altmetric-Citations16LEARN 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
TAM: A Tiered Authentication of Multicast Protocol for Ad-Hoc Networks (2011)

Ad-hoc networks are becoming an effective tool for many mission critical applications such as troop coordination in a combat field, situational awareness, etc. These applications are characterized by the hostile environment that they serve in and by the multicast-style of communication traffic. Therefore, authenticating the source and ensuring the integrity of the message traffic become a fundamental requirement for the operation and management of the network. However, the limited computation and communication resources, the large scale deployment and the unguaranteed connectivity to trusted authorities make known solutions for wired and single-hop wireless networks inappropriate. This paper presents a new Tiered Authentication scheme for Multicast traffic (TAM) for large scale dense ad-hoc networks. TAM combines the advantages of the time asymmetry and the secret information asymmetry paradigms and exploits network clustering to reduce overhead and ensure scalability. Multicast traffic within a cluster employs a one-way hash function chain in order to authenticate the message source. Cross-cluster multicast traffic includes message authentication codes (MACs) that are based on a set of keys. Each cluster uses a unique subset of keys to look for its distinct combination of valid MACs in the message in order to authenticate the source. The simulation and analytical results demonstrate the performance advantage of TAM in terms of bandwidth overhead and delivery delay.
Evaluating Electrocatalysts for Solar Water-splitting Reactions (2018)

Standardization in evaluating and reporting electrocatalytic performance for the oxygen evolution reaction and hydrogen evolution reaction is crucial to the development of new catalysts for solar-water splitting devices. The goal of the Benchmarking project at the Joint Center for Artificial Photosynthesis was to propose standard protocols for evaluating water-splitting catalysts that facilitate cross-comparison of catalytic activity and stability. In this chapter, we provide an overview of the evaluation and reporting methods developed by the Benchmarking project and summarize our studies evaluating solid-state, heterogeneous electrocatalysts for electrocatalytic water splitting. The chapter will specifically overview the choice of appropriate electrochemical apparatus and electrodes for conducting electrocatalytic studies, provide details regarding the use and limitations of the benchmarking protocols used in our studies to evaluate catalyst activity and stability, and summarize the general results of our investigations of catalyst performance.
Unsupervised learning of probabilistic models for robot navigation (2002)

Navigation methods for office delivery robots need to take various sources of uncertainty into account in order to get robust performance. In previous work, we developed a reliable navigation technique that uses partially observable Markov models to represent metric, actuator and sensor uncertainties. This paper describes an algorithm that adjusts the probabilities of the initial Markov model by passively observing the robot's interactions with its environment. The learned probabilities more accurately reflect the actual uncertainties in the environment, which ultimately leads to improved navigation performance. The algorithm, an extension of the Baum-Welch algorithm, learns without a teacher and addresses the issues of limited memory and the cost of collecting training data. Empirical results show that the algorithm learns good Markov models with a small amount of training data.
Transfer of Fetal Cells With Multilineage Potential to Maternal Tissue (2004)

The detection of microchimeric male cells, bearing epithelial, leukocyte, or hepatocyte markers, in a variety of maternal tissue specimens suggests the presence of fetal cells that may have multilineage capacity.
Transmission of stroking sensation on a skin by higher-psychological perception (2007)

Humans are able to communicate with each other by using not only verbal media but also the five senses such as vision, audition, olfaction and tactility. Our emotions and feelings are directly transmitted through non-verbal media, especially tactile sensation senses the physical information about an object or an environment. We have paid attention to the information transmission through the higher-psychological perception of tactility, and are now constructing a tactile transmission system for presenting stroking sensation. This paper introduces the development of a tactile display using a shape-memory alloy, and describes the transmission of stroking sensation by the higher-psychological perception such as the phantom sensation (PS) and the apparent movement (AM) of the tactility.
Thyroid Effects on Adenosine 3′,5′-Monophosphate Levels and Adenylate Cyclase in Cultured Neuroblastoma Cells* (1987)

Using neuroblastoma cells as a model of developing neurons, we have tested the hypothesis that thyroid hormones alter cAMP metabolism. Neuroblastoma cells were grown in serum-free defined medium for 48 h with or without thyroid hormones. Treatment with 20-200 nM 3,5,3'-triiodo-L-thyronine (T3) increased the accumulation of cAMP by intact cells without altering growth, gross morphology, or DNA or protein content. The increase in cAMP accumulation could be detected 5 h after the addition of T3 and was abolished by the addition of cycloheximide. The maximum stimulation produced by prostaglandin E1 was increased in T3 cells without a significant alteration of the half-maximal concentration. T4 and D-T3 in concentrations up to 20 microM did not increase cAMP accumulation. Adenylate cyclase activity in response to forskolin, guanine nucleotides, and stimulatory hormones was increased in purified membranes from cells grown in T3, suggesting that increased adenylate cyclase is probably the major mechanism of the observed response to thyroid hormone.
The American Academy of Advertising: The Early Years (1992)

Abstract Abstract The first seven years of the American Academy of Advertising were crucial. It was the first and only organization ever formed specifically for advertising educators. In the beginning, many advertising educators did not see the need for such an organization and many others had a "wait and see" attitude. The Academy survived; and, at the end of the period, more than 300 teachers had joined. It also was recognized by the advertising profession. This article serves as a synopsis of those seven years.
Fabrication and properties of superconducting device structures in YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-x</sub>thin films (1987)

The authors report the results obtained from thin-film superconducting tunnel-junction structures in high-transition-temperature materials. Two classes of structure have been studied; firstly that in which a single layer of YBa2Cu3O7-x is overlain by cross strips of Nb, and secondly multilayer high-critical-temperature YBa2Cu3O7-x superconducting thin films that incorporate an Y2O3 artificial barrier. Preliminary device structures prepared from the samples incorporating this artificial barrier have demonstrated distinct Josephson supercurrents in these materials, although only at this stage for tunnelling through the 'natural' tunnel barriers that commonly form between neighbouring high-Tc grains. Experiments also indicate the survival of the artificial tunnel barrier. The results obtained with the Nb strips provide a measurement of a superconducting energy gap in the high-Tc material which is consistent with values previously reported in La-based high-Tc materials.
Acute Effects of Exercise in Patients With Previous Deep Venous Thrombosis: Impact of the Post-thrombotic Syndrome. (2003)

Kahn, S R; Azoulay, L; Hirsch, A; Haber, M; Strulovitch, C; Shrier, I Author Information
Hollow fiber solvent extraction removal of toxic heavy metals from aqueous waste streams (1993)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHollow fiber solvent extraction removal of toxic heavy metals from aqueous waste streamsChang H. Yun, Ravi Prasad, Asim K. Guha, and Kamalesh K. SirkarCite this: Ind. Eng. Chem. Res. 1993, 32, 6, 1186–1195Publication Date (Print):June 1, 1993Publication History Published online1 May 2002Published inissue 1 June 1993https://pubs.acs.org/doi/10.1021/ie00018a026https://doi.org/10.1021/ie00018a026research-articleACS PublicationsRequest reuse permissionsArticle Views562Altmetric-Citations157LEARN 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
Orbital Mechanisms of Electron-Spin Manipulation by an Electric Field (2003)

A theory of spin manipulation of quasi-two-dimensional (2D) electrons by a time-dependent gate voltage applied to a quantum well is developed. The Dresselhaus and Rashba spin-orbit coupling mechanisms are shown to be rather efficient for this purpose. The spin response to a perpendicular-to-plane electric field is due to a deviation from the strict 2D limit and is controlled by the ratios of the spin, cyclotron, and confinement frequencies. The dependence of this response on the magnetic field direction is indicative of the strengths of the competing spin-orbit coupling mechanisms.
Hydrogen termination of CVD diamond films by high-temperature annealing at atmospheric pressure (2013)

A high-temperature procedure to hydrogenate diamond films using molecular hydrogen at atmospheric pressure was explored. Undoped and doped chemical vapour deposited (CVD) polycrystalline diamond films were treated according to our annealing method using a H2 gas flow down to ~50 ml∕min (STP) at ~850 °C. The films were extensively evaluated by surface wettability, electron affinity, elemental composition, photoconductivity, and redox studies. In addition, electrografting experiments were performed. The surface characteristics as well as the optoelectronic and redox properties of the annealed films were found to be very similar to hydrogen plasma-treated films. Moreover, the presented method is compatible with atmospheric pressure and provides a low-cost solution to hydrogenate CVD diamond, which makes it interesting for industrial applications. The plausible mechanism for the hydrogen termination of CVD diamond films is based on the formation of surface carbon dangling bonds and carbon-carbon unsaturated bonds at the applied tempera-ture, which react with molecular hydrogen to produce a hydrogen-terminated surface.
Understanding security group usage in a public IaaS cloud (2016)

To ensure security, cloud service providers employ security groups as a key tool for cloud tenants to protect their virtual machines (VMs) from attacks. However, security groups can be complex and often hard to configure, which may result in security vulnerabilities that impact the entire cloud platform. The goal of this paper is to investigate and understand how cloud tenants configure security groups and to assist them in designing better security groups. We first conduct a measurement-based analysis of security group configuration and usage by tenants in an IaaS cloud. We then propose and develop a tool called Socrates, which enables tenants to visualize and hence understand the static and dynamic access relations among VMs. Socrates also helps diagnose potential misconfigurations and provides suggestions to refine security group configurations based on observed traffic traversing tenants' VMs. Applying Socrates to all tenants hosted on the IaaS cloud, we analyze the common usage (“good” as well as “bad” practices) of cloud security groups and report the key lessons learned in our study. To the best of our knowledge, our work is the first to analyze cloud security group usage based on real-world datasets, and to develop a system to help cloud tenants understand, diagnose and better refine their security group configurations.
Hot isostatic pressing of Y2O3-partially stabilized zirconia (1985)

Strength enhancement of Y2O3-partially stabilized zirconia (Y2O3-PSZ) was achieved by hot isostatic pressing. Improvement of strength in hot isostatic pressed materials depended strongly on the conditions of presintering. Results of fractography observations suggest that the hot isostatic pressing yields the elimination of large pores in the presintered body, with subsequent strength enhancement. The Y2O3-compositional dependence of strength is examined 3 mol pct Y2O3-PSZ exhibited mean bending strength as high as 1500 MPa. 15 references.