gebhart/patrepeval huggingface dataset:
Product distribution and stereochemistry in the reaction of the unsymmetrical bisphosphine Ph2P(CH2)6PEtPh with platinum(II) salts (1982)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProduct distribution and stereochemistry in the reaction of the unsymmetrical bisphosphine Ph2P(CH2)6PEtPh with platinum(II) saltsJosie C. Briggs, Charles A. McAuliffe, William E. Hill, David M. A. Minahan, John G. Taylor, and Geoffrey DyerCite this: Inorg. Chem. 1982, 21, 12, 4204–4210Publication Date (Print):December 1, 1982Publication History Published online1 May 2002Published inissue 1 December 1982https://pubs.acs.org/doi/10.1021/ic00142a018https://doi.org/10.1021/ic00142a018research-articleACS PublicationsRequest reuse permissionsArticle Views117Altmetric-Citations18LEARN 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
On optimal selection of lip-motion features for speaker identification (2005)

This paper addresses the selection of best lip motion features for biometric open-set speaker identification. The best features are those that result in the highest discrimination of individual speakers in a population. We first detect the face region in each video frame. The lip region for each frame is then segmented following the registration of successive face regions by global motion compensation. The initial lip feature vector is composed of the 2D-DCT coefficients of the optical flow vectors within the lip region at each frame. We propose to select the most discriminative features from the full set of transform coefficients by using a probabilistic measure that maximizes the ratio of intra-class and inter-class probabilities. The resulting discriminative feature vector with reduced dimension is expected to maximize the identification performance. Experimental results are also included to demonstrate the performance.
ChemInform Abstract: Medium and High Oxidation State Metal/Non‐Metal Fluoride and Oxide—Fluoride Complexes with Neutral Donor Ligands (2013)

Abstract Review: 429 refs.
Characteristic exponents for the triangular points in the elliptic restricted problem of three bodies (1970)

D ANBY3 studied the linear stability of the triangular points numerically using Floquet theory. He presented transition curves that separate the stable from the unstable orbits in the fj,-e plane (JJL is the ratio of the smaller primary to the sum of the masses of the two primaries, and e is the eccentricity of the primaries' orbit). These curves intersect the ju axis at ju a and juo, where ju0 = 0.03852 is the limiting value of /z for stable orbits in the circular case, and /z0 = 0.02859 is the value of JJL such that one of the periods of motion about the triangular points is exactly twice the period of the orbit of the primaries in the circular case. Bennett2 obtained a first-order complicated analytical expression for the transition curves JJLQ using an analytical technique for determination of characteristic exponents. Alfriend and Rand1 obtained second-order analytical expressions for the transition curves at \ia and JLIO using the method of multiple scales.57 Nayfeh and Kamel8 determined fourth-order analytical expressions for the transition carves using a perturbation technique. In this Note, we obtain a second-order analytical expression for the characteristic exponents and the transition curves using Floquet theory9 and a perturbation technique used by Whittaker10 in the treatment of Mathieu equation. We use the same formulation of Refs. 1 and 8. The first variational equation about the triangular points can be transformed into
Complex oxide nanostructures by pulsed laser deposition through nanostencils (2005)

We achieved parallel nanoscale patterning of ferroelectric complex oxides by pulsed laser deposition through a nanostencil (i.e., through a pattern of apertures in a thin free-standing membrane). Ordered arrays of nanostructured barium titanate (BaTiO3) were obtained onto different substrates in a single deposition step, at room temperature, replicating accurately the aperture patterns in the stencil membrane. After a postdeposition annealing treatment, x-ray diffraction pattern showed a nanocrystalline BaTiO3 structure close to the perovskite cubic phase with grains 30–35nm in size. Their local ferroelectric properties were detected using piezoresponse force microscopy.
Kadupul (2015)

Devices connected to the Internet today have a wide range of local communication channels available, such as wireless Wifi, Bluetooth or NFC, as well as wired backhaul. In densely populated areas it is possible to create heterogeneous, multihop communication paths using a combination of these technologies, and often transmit data with lower latency than via a wired Internet connection. However, the potential for sharing meshed wireless radios in this way has never been realised due to the lack of economic incentives to do so on the part of individual nodes.
T2‐weighted MR imaging of the chest: Comparison of electrocardiograph‐triggered conventional and turbo spin‐echo and nontriggered turbo spin‐echo sequences (1995)

In 22 patients with a diverse range of thoracic abnormalities, T2-weighted magnetic resonance (MR) images of the chest were obtained with electrocardiograph (ECG)-triggered turbo spin-echo (TSE), ECG-triggered conventional spin-echo (CSE), and nontriggered TSE sequences, and the images were compared. A 5-point rating scale was used by three radiologists experienced in MR imaging of the chest to independently evaluate the images for (a) freedom from ghosting, (b) clarity of heart wall and cardiac chambers, (c) clarity of mediastinal structures, (d) conspicuity of abnormalities, and (e) overall image quality. Evaluations were analyzed with statistical methods. For freedom from ghosting, clarity of heart wall and cardiac chambers, clarity of mediastinal structures, and overall image quality, the ECG-triggered TSE images were rated higher than the TSE images, which, in turn, were rated higher than the ECG-triggered CSE images at the P = .05 level of significance. No significant differences were seen between the pulse sequences in the conspicuity of abnormalities, although some differences were observed in individual cases. Our results suggest that ECG-triggered TSE imaging provides improved, time-efficient T2-weighted images of the chest.
In vivo wear of polyethylene glenoid components in total shoulder arthroplasty (2005)

Abstract Loosening of the glenoid component after a total shoulder arthroplasty, leading to pain and the need for a revision operation, accounts for one third of all shoulder replacement complications. It has been shown that glenoid loosening could be a result of osteolysis of periprosthetic bone induced by polymeric wear debris. The aim of this study was to determine the amount and pattern of in vivo wear of polyethylene glenoid components by examining a set of so-called retrievals. Six glenoid components were retrieved and examined (5 all-polyethylene and 1 metal-backed). The average time of functioning of these components in human bodies was 10 years with the shortest time of 7 and longest 14 years. Four components were scanned using a laser scanner. The results of measurements have been used to generate geometrical models of the retrievals using CAD software. These models have been subsequently used to determine the maximum depth and volumetric wear rate for each component. All six retrievals were examined using scanning electron microscopy (SEM). The maximum volumetric wear rate and wear depth for the analyzed retrievals was 30 mm 3 /year and 0.2 mm/year, respectively. From SEM analysis of the retrievals it was found that at macroscopic level the worn surfaces consist of (a) polished and (b) scratched regions. Intensive wear areas and fine multidirectional scratches were dominant in all retrievals. Random scratches were also observed, most probably due to third body wear (cement particles). In two implants pitting areas and surface micro-cracks have been observed, which most likely result from subsurface fatigue.
The Major Histocompatibility Complex and its Role in Disease Resistance and Immune Responsiveness (2000)

Central to an animal's defence system is the ability to differentiate self from non-self and, thus, protect itself from disease. This unique quality is determined, in large part, by the major histocompatibility complex (MHC) genes of each species. In farm animals, the knowledge of the MHC genes has been growing, especially since the rapid advances in molecular biology. The general structure of the MHC of the pig, cow, chicken and horse is presented in this chapter. Disease and immune response associations are also described. Although in many instances these data are limited, it is clear that the MHC is strongly associated with health traits in farm animals. Understanding these MHC-disease resistance and immune-responsiveness relationships will allow genetic improvement to be made by marker-assisted selection, rather than by direct challenge of populations with pathogens.
Physiological Signals That Induce Flowering (1993)

Georges Bernier, , Claude Houssa, Anne Petitjean, Pierre Lejeune, Physiological Signals That Induce Flowering, The Plant Cell, Vol. 5, No. 10, Special Review Issue on Plant Reproduction (Oct., 1993), pp. 1147-1155
Three-Dimensional, Transgenic Cell Models to Quantify Space Genotoxic Effects (1999)

In this paper we describe a three-dimensional, multicellular tissue-equivalent model, produced in NASA-designed, rotating wall bioreactors using mammalian cells engineered for genomic containment of mUltiple copies of defined target genes for genotoxic assessment. The Rat 2(lambda) fibroblasts (Stratagene, Inc.) were genetically engineered to contain high-density target genes for mutagenesis. Stable three-dimensional, multicellular spheroids were formed when human mammary epithelial cells and Rat 2(lambda) fibroblasts were cocultured on Cytodex 3 Beads in a rotating wall bioreactor. The utility of this spheroidal model for genotoxic assessment was indicated by a linear dose response curve and by results of gene sequence analysis of mutant clones from 400micron diameter spheroids following low-dose, high-energy, neon radiation exposure
Ni<sub>2</sub>Al Versus Ni<sub>5</sub>Al<sub>3</sub>Ordering in Ni<sub>65</sub>Al<sub>35</sub>Austenite and Martensite (1995)

The formation of the Ni5Al3 phase in L10 martensite of Ni65Al35 material can be delayed by using slow quenching rates after the homogenisation of the material. This is of potential interest for the use of Ni-Al as a high temperature shape memory alloy. Based on the present results indicating a strong influence of the quenching rate on the ordering sequence in this material, some difficulties in previous interpretations can be clarified.
Evaluation of brush seals for limited-life engines (1993)

Brush seals are a relatively new concept for replacing labyrinth seals in gas turbine engines. An evaluation was performed to assess the potential of brush seals for limited-life gas turbine engines. A rotating rig was designed and built to test labyrinth and brush seals over a range of simulated engine conditions. An initial set of brush seals was rig-tested to determine leakage and wear performance and identify potential optimum configurations. The measured results showed that brush seals offer significant improvements over labyrinth seals with a factor of three or more reduction in leakage flow. Brush seals exhibit an initial wear-in period but retain significantly reduced leakage over labyrinth seals for times exceeding most limited-life engine applications. Consequently, brush seals offer the potential to precisely meter cooling/leakage air, thereby decreasing parasitic leakage and improving fuel consumption and thrust. Thus, brush seals are a definite candidate for replacing labyrinth seals in gas turbine engines.
Side effects of light therapy in seasonal affective disorder (1993)

The authors report the frequency of side effects of light therapy in 105 patients with seasonal affective disorder treated with three intensities of light. Common symptoms to emerge during treatment were headache (19%), eyestrain (17%), and feeling "wired" (14%). There was no relationship between side effects and intensity of light used.
Recommendations for clinical interpretation of variants found in non-coding regions of the genome (2022)

These recommendations aim to increase the number and range of non-coding region variants that can be clinically interpreted, which, together with a compatible phenotype, can lead to new diagnoses and catalyse the discovery of novel disease mechanisms.
Stereoselective Thallium-induced Ring Contraction of Glycals (1999)

Various glycals, treated with Tl(NO3)3·3H2O under mild conditions in an acetonitrile–methanol solvent mixture, underwent ring contraction in a stereoselective fashion, affording stable acetal products.
Convenient Synthesis of Functionalized Cyclopropa[c]coumarin-1a-carboxylates (2018)

A simple method has been developed for the synthesis of cyclopropa[<i>c</i>]coumarins, which belong to the donor-acceptor cyclopropane family and, therefore, are promising substrates for the preparation of chromene-based fine chemicals. The method, based on the acetic acid-induced intramolecular transesterification of 2-arylcyclopropane-1,1-dicarboxylates, was found to be efficient for substrates containing hydroxy group directly attached to the aromatic ring.
Optimierung der Darstellung von <sup>111</sup> In-Oxinat zur Markierung von Thrombozyten und Leukozyten (1982)

Bei der Darstellung von Indiumoxinat aus Indiumchlorid und 8-Hydroxychinolin kann es bei Anwesenheit geringster Mengen von Schwernetallverunreinigungen (> 2 × 10−6 g) zu einer kompetitiven Hemmung der Oxinatbildung kommen. Die dadurch erfordcrliche Erhöhung der Oxinmenge führt zu einer abnehmenden Stabilität der damit markierten Thrombozyten bzw. Leukozyten. Es wird eine optimierte Methode zur Reinigung des Indutmchlorids mittels Ionenaustauscherchromatographie beschrieben, die eine Abtrennung aller störenden Fremdionen bei einem minimalen zeitlichen und apparativen Aufwand ermöglicht.
Covert channels-here to stay? (2002)

We discuss the difficulties of satisfying high-assurance system requirements without sacrificing system capabilities. To alleviate this problem, we show how trade-offs can be made to reduce the threat of covert channels. We also clarify certain concepts in the theory of covert channels. Traditionally, a covert channel's vulnerability was measured by the capacity. We show why a capacity analysis alone is not sufficient to evaluate the vulnerability and introduce a new metric referred to as the "small message criterion".< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Scalable internet servers (2000)

article Free Access Share on Scalable internet servers: issues and challenges Authors: Krishna Kant Intel Corporation Intel CorporationView Profile , Prasant Mohapatra Michigan State Univ. Michigan State Univ.View Profile Authors Info & Claims ACM SIGMETRICS Performance Evaluation ReviewVolume 28Issue 2Sept. 2000pp 5–8https://doi.org/10.1145/362883.362891Published:01 September 2000Publication History 22citation320DownloadsMetricsTotal Citations22Total Downloads320Last 12 Months37Last 6 weeks4 Get Citation AlertsNew Citation Alert added!This alert has been successfully added and will be sent to:You will be notified whenever a record that you have chosen has been cited.To manage your alert preferences, click on the button below.Manage my AlertsNew Citation Alert!Please log in to your account Save to BinderSave to BinderCreate a New BinderNameCancelCreateExport CitationPublisher SiteeReaderPDF
Fracture Gradient Modelling – Best Practices? (2009)

The fracture gradient is typically recognized as the upper pressure limit in the borehole annulus while drilling in clastic rocks. Above this limit significant mud losses into the formation can be encountered due to the creation of drilling-induced fractu
Mode shaping in semiconductor broad area lasers by monolithically integrated phase structures (2013)

By broadening the stripe width of the active waveguide region, it is possible to extract high optical powers from semiconductor broad area lasers. However, a weak output beam quality, optical filamentation, and high peak power densities will result, which are invoked by the amplification of higher order modes. We show an approach to influence the optical field inside the resonator by integrating optical phase structures directly into the waveguide. Those elements offer the possibility to enlarge the active gain area for the desired fundamental laser mode, while additional diffraction losses for higher order modes are generated, thus achieving an improved beam quality. We report on considerations in designing those elements and demonstrate a first experimental realization.
A new lithium insertion compound (lithium,copper) tantalum oxide, (Li,Cu)TaO3, with the LiNbO3-type structure (1989)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA new lithium insertion compound (lithium,copper) tantalum oxide, (Li,Cu)TaO3, with the LiNbO3-type structureNobuhiro Kumada, Satoru Hosoda, Fumio Muto, and Nobukazu KinomuraCite this: Inorg. Chem. 1989, 28, 18, 3592–3595Publication Date (Print):September 1, 1989Publication History Published online1 May 2002Published inissue 1 September 1989https://pubs.acs.org/doi/10.1021/ic00317a038https://doi.org/10.1021/ic00317a038research-articleACS PublicationsRequest reuse permissionsArticle Views299Altmetric-Citations10LEARN 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
Trading packet headers for packet processing (1996)

In high speed networks, packet processing is relatively expensive while bandwidth is cheap. Thus, it pays to add information to packet headers to make packet processing easier. While this is an old idea, we describe several specific new mechanisms based on this principle. We describe a new technique, source hashing, which can provide O(1) lookup costs at the data link, routing, and transport layers. Source hashing is especially powerful when combined with the old idea of a flow identifier (flow ID); the flow ID allows packet processing information to be cached and source hashing allows efficient cache lookups. Unlike virtual circuit identifiers (VCIs), source hashing does not require a round-trip delay for set up. In an experiment with the BSD packet filter implementation, we found that adding a flow ID and a source hash improved packet processing costs by a factor of seven. We also found a 45% improvement when we conducted a similar experiment with IP packet forwarding. We also describe two other new techniques: threaded indices, which allows fast VCI-like lookups for datagram protocols like IP; and a data manipulation layer (DML), which compiles out all the information needed for integrated layer processing (ILP) and scheduling into an easily accessible portion of each packet.
Generalized Onsager relations for electrokinetic effects in anisotropic and heterogeneous geometries (2004)

We lay down a general formalism to describe the linear electrohydrodynamic response of systems of arbitrary topology, symmetry and heterogeneity, and through an explicit proof, we demonstrate a set of general Onsager relations between the corresponding electrokinetic coefficients. This generalizes a classical result of Mazur and Overbeek [P. Mazur and J.T.G. Overbeek, Recl. Trav. Chim. Pays-Bas. 70, 83 (1951)] to situations that may become of practical relevance in particular in the field of microfluidic devices. Technically, our proof of the symmetry of the generalized conductance matrix relies on an adaptation of the reciprocal theorem of low-Reynolds-number hydrodynamics.
Phase Noise and Fading Effects on System Performance in MT-DS-SS (2005)

Multicarrier (MC) modulation and code division multiple access (CDMA) schemes have seen much recent attention for the high capacities and flexibility they can provide. A potential difficulty with these systems is their sensitivity to the effects of imperfect frequency up/down conversion due to local oscillator phase noise and frequency offset. In this paper, we provide a general method to upper bound and/or approximate system performance in multitone direct-sequence spread spectrum (MT-DS-SS) signaling in the presence of imperfect synchronization. We model phase noise as a slow random processes with small variance. In particular, we assume coherent detection with binary phase-shift keying (BPSK) modulation and use a phase noise model based upon one for a practical phase-locked loop (PLL). Comparisons between simulations and analysis show excellent agreement, and also show that system degradation is dominated by the common phase noise, and that the intersubcarrier-same-user interference (IS-SUI) contribution is very small. The approach we employ provides an effective analytical/numerical method for performance evaluation for low target error probability values, on the order of 10/sup -6/ or lower. In addition, our method can also be easily applied to any multicarrier system with other frequency offset/phase noise models.
Millimeter wave radar absorbing materials (1993)

It was anticipated that ferrimagnetic hexagonal compounds such as BaFe12019, SrFei 2019 andSrAl2Fe 10019 have magnetic resonance absorptions at frequencies beyond 30 GHz. We have mixedpowder specimens of such materials and deposited in paint form on one surface of a optically polishedfused silica glass substrate. The ferromagnetic resonance was then studied as functions of appliedexternal magnetic field intensity, specimen thickness and continuous frequency at millimeter wavelengthregion. A new dispersive Fourier transform spectrometer was designed and constructed to measure the realand imaginary parts of complex magnetic permeability and real and imaginary parts of complex dielectricpermittivity as a continuous function of frequency from about 10 mm wavelength to up to one millimeterwavelength range.