gebhart/patrepeval huggingface dataset:
Surface-enhanced resonance Raman scattering from water-soluble porphyrins adsorbed on a silver electrode (1982)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSurface-enhanced resonance Raman scattering from water-soluble porphyrins adsorbed on a silver electrodeTherese M. Cotton, Steven G. Schultz, and Richard P. Van DuyneCite this: J. Am. Chem. Soc. 1982, 104, 24, 6528–6532Publication Date (Print):December 1, 1982Publication History Published online1 May 2002Published inissue 1 December 1982https://pubs.acs.org/doi/10.1021/ja00388a008https://doi.org/10.1021/ja00388a008research-articleACS PublicationsRequest reuse permissionsArticle Views623Altmetric-Citations93LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
Interplay of SpkG kinase and the Slr0151 protein in the phosphorylation of ferredoxin 5 in <i>Synechocystis</i> sp. strain <scp>PCC</scp> 6803 (2018)

In Synechocystis 6803, the ferredoxin 5 (Fd5) phosphoprotein and the S/T protein kinase SpkG are encoded by the slr0148 and slr0152 genes, respectively, which belong to the slr0144-slr0152 cluster. Using a targeted proteomic approach, we showed that SpkG is responsible for the phosphorylation of Fd5 on residues T18 and T72. Sequence alignments and Fd5 structure modelling suggest that these phosphorylation events modulate protein-protein interaction. Furthermore, Fd5 phosphorylation is affected by the Slr0151 protein encoded by the gene preceding spkG in the gene cluster. We propose that Slr0151 functions as an auxiliary protein in the regulation of the ratio between phosphorylated and nonphosphorylated forms of Fd5.
On the effect of aging on martensitic transformations in Ni-rich NiTi shape memory alloys (2005)

We investigate the effect of 450 °C aging on the microstructure and on the martensitic transformations in a Ni-rich (50.8 at.% Ni) NiTi shape memory alloy using transmission electron microscopy (TEM), x-ray diffraction (XRD), neutron diffraction (ND) and differential scanning calorimetry (DSC). On cooling from the high temperature phase, DSC charts show two distinct peaks after short aging times, three peaks after intermediate aging times and two peaks again after long aging times (2-3-2 transformation behaviour). After 1.5 h 450 °C aging, three DSC peaks were obtained on cooling from the high temperature phase. The first peak on cooling represents the formation of R-phase and the second peak is associated with the formation of B19′. Due to a macroscopic microstructural heterogeneity a second B19′ peak (overall third peak) occurs at lower temperatures. We discuss our results in the light of recent remarks on burst-like events during the growth of thermoelastic martensite and on the effect of oxidation on NiTi microstructures.
Preliminary study of an intelligent sampling decision scheme for the AVM system (2014)

Wafer inspection plays a significant role in monitoring the quality of production wafers. However, it requires measuring tools and additional cycle time to do real metrology, which is costly and time-consuming. Therefore, reducing sampling rate to as low as possible is a high priority for many factories to reduce production cost. The most common way for inspecting process quality is to apply periodic sampling. If a manufacturing process is stable, then virtual metrology (VM) may be applied for monitoring the quality of wafers while real metrology is unavailable. Nevertheless, if a production variation occurs between periodic samplings, no real metrology is available during this period for updating the VM models, which may result in un-reliable VM predictions. The authors have developed the automatic virtual metrology (AVM) system for various VM applications. Therefore, this paper focuses on applying various indices of the AVM system to develop an Intelligent Sampling Decision (ISD) scheme for reducing sampling rate while VM accuracy is still sustained.
Application of Active Combustion Instability Control to a Heavy Duty Gas Turbine (1998)

During the prototype shop tests, the Model V84.3A ring combustor gas turbine unexpectedly exhibited a noticeable “humming” caused by self-excited flame vibrations in the combustion chamber for certain operating conditions. The amplitudes of the pressure fluctuations in the combustor were unusually high when compared to the previous experience with silo combustor machines. As part of the optimization program, the humming was investigated and analyzed. To date, combustion instabilities in real, complex combustors cannot be predicted analytically during the design phase. Therefore, and as a preventive measure against future surprises by “humming,” a feedback system was developed which counteracts combustion instabilities by modulation of the fuel flow rate with rapid valves (active instability control, AIC). The AIC achieved a reduction of combustion-induced pressure amplitudes by 86 percent. The Combustion instability in the Model V84.3A gas turbine was eliminated by changes of the combustor design. Therefore, the AIC is not required for the operation of customer gas turbines.
Food Chemical Studies of Soybean Protein (1973)

An improved spectrophotometric method for the determination of lipoxygenase activity and the heating method of the enzyme were developed and applied in studies of the purified enzyme and the enzyme in aqueous extract of soybean. The inactivation of the purified enzyme by heating at various temperature conformed to the first order reaction and the rate, k, versus heating temperature was straight lines overlapped one another at about 70°C; the enzyme was inactivated easily over about 70°C. The behavior of heat inactivation of the enzyme in aqueous extract of soybean was similar to that of the purified enzyme, but the enzyme in soybean meal had a greater resistance to dry heating than in the water extract.From the relation between k and 1/T in the case of the purified enzyme and the aqueous extract, the activation energy, E, and entropy, S, were calculated and these values changed remarkably at about 70°C.
New Method for Calculating the One-Particle Green's Function with Application to the Electron-Gas Problem (1965)

A set of successively more accurate self-consistent equations for the one-electron Green's function have been derived. They correspond to an expansion in a screened potential rather than the bare Coulomb potential. The first equation is adequate for many purposes. Each equation follows from the demand that a corresponding expression for the total energy be stationary with respect to variations in the Green's function. The main information to be obtained, besides the total energy, is one-particle-like excitation spectra, i.e., spectra characterized by the quantum numbers of a single particle. This includes the low-excitation spectra in metals as well as configurations in atoms, molecules, and solids with one electron outside or one electron missing from a closed-shell structure. In the latter cases we obtain an approximate description by a modified Hartree-Fock equation involving a "Coulomb hole" and a static screened potential in the exchange term. As an example, spectra of some atoms are discussed. To investigate the convergence of successive approximations for the Green's function, extensive calculations have been made for the electron gas at a range of metallic densities. The results are expressed in terms of quasiparticle energies $E(\mathrm{k})$ and quasiparticle interactions $f(\mathrm{k}, {\mathrm{k}}^{\ensuremath{'}})$. The very first approximation gives a good value for the magnitude of $E(\mathrm{k})$. To estimate the derivative of $E(\mathrm{k})$ we need both the first- and the second-order terms. The derivative, and thus the specific heat, is found to differ from the free-particle value by only a few percent. Our correction to the specific heat keeps the same sign down to the lowest alkali-metal densities, and is smaller than those obtained recently by Silverstein and by Rice. Our results for the paramagnetic susceptibility are unreliable in the alkali-metal-density region owing to poor convergence of the expansion for $f$. Besides the proof of a modified Luttinger-Ward-Klein variational principle and a related self-consistency idea, there is not much new in principle in this paper. The emphasis is on the development of a numerically manageable approximation scheme.
Assessment of laser-dazzling effects on TV-cameras by means of pattern recognition algorithms (2007)

Imaging systems are widespread observation tools used to fulfil various functions such as detection, recognition, identification and video-tracking. These devices can be dazzled by using intensive light sources, e.g. lasers. In order to avoid such a disturbance, dazzling effects in TV-cameras must be better understood. In this paper we studied the influence of laser-dazzling on the performance of pattern recognition algorithms. The experiments were performed using a black and white TV-CCD-camera, dazzled by a nanosecond frequency doubled Nd:YAG laser. The camera observed a scene comprising different geometrical forms which had to be recognized by the algorithm. Different dazzling conditions were studied by varying the laser repetition rate, the pulse energy and the position of the geometrical forms relative to the laser spot. The algorithm is based on edge detection and locates areas with forms similar to a reference symbol. As a measure of correspondence it computes the degree of correlation of the different areas. The experiments show that dazzling can highly affect the performance of the used pattern recognition algorithms by generating lots of spurious edges which mimic the reference symbol. As a consequence dazzling results in detrimental effects, since it not only prevents the recognizing of well defined symbols, but it also creates many false alarms.
Fault diagnosis of electronic systems using intelligent techniques: a review (2001)

In an increasingly competitive marketplace system complexity continues to grow, but time-to-market and lifecycle are reducing. The purpose of fault diagnosis is the isolation of faults on defective systems, a task requiring a high skill set. This has driven the need for automated diagnostic tools. Over the last two decades, automated diagnosis has been an active research area, but the industrial acceptance of these techniques, particularly in cost-sensitive areas, has not been high. This paper reviews this research, primarily covering rule-based, model-based, and case-based approaches and applications. Future research directions are finally examined, with a concentration on issues, which may lead to a greater acceptance of automated diagnosis.
Rheological behavior and stability of concentrated silica suspensions (1999)

In the present article, the rheological behavior and phase stability of concentrated silica suspensions were investigated experimentally by examining the effects of particle size and temperature. The silica particles were stabilized by adsorption of a silane coupling agent, γ-methacryloxypropyl triethoxy silane (MPTES). The MPTES-coated silica particles behaved like hard spheres and exhibited the dispersion stability in tetrahydrofurfuryl alcohol which was used as a refractive-index matching solvent. For a monodisperse suspension, the limiting viscosities at high shear rates were correlated satisfactorily with the Krieger–Dougherty equation until the particle volume fraction φ reached 0.45 above which the limiting high-shear-rate viscosities did not exist. The highly concentrated monodisperse suspensions above φ=0.50 displayed the rapidly shear thinning viscosity at low shear rates and underwent the shear thickening at high shear rates. Specifically, the onset of shear thickening shifted to a higher shear rate either as temperature rose or as the suspension became stable. The dichroism from light passed in the flow-gradient direction probed the most effectively the order–disorder transition such as disappearance of hexagonally ordered layered structure and formation of particle clustering, which caused shear thickening at high shear rates. The abrupt change in dichroism caused by the breakdown of hexagonally layered structure occurred almost 1 decade before the onset of shear thickening. Finally, the bimodal suspensions prepared here possessed the reduced shear viscosity and stress in comparison with the monodisperse suspensions of identical volume fraction. The degree of the viscosity reduction became conspicuous for concentrated suspensions usually above φ=0.40.
Low symmetry phase in (001) BiFeO3 epitaxial constrained thin films (2005)

The lattice of (001)-oriented BiFeO3 epitaxial thin film has been identified by synchrotron x-ray diffraction. By choosing proper scattering zones containing the fixed (001) reflection, we have shown that low-symmetry phases similar to a MA phase exist in the thin film at room temperature. These results demonstrate a change in phase stability from rhombohedral in bulk single crystals, to a modified monoclinic structure in epitaxial thin films.
Facile Synthesis of Poly(phenylcarbyne): a Precursor for Diamondlike Carbon (1994)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFacile Synthesis of Poly(phenylcarbyne): a Precursor for Diamondlike CarbonReuben D. Rieke and Tian-An ChenCite this: Chem. Mater. 1994, 6, 5, 576–577Publication Date (Print):May 1, 1994Publication History Published online1 May 2002Published inissue 1 May 1994https://pubs.acs.org/doi/10.1021/cm00041a003https://doi.org/10.1021/cm00041a003research-articleACS PublicationsRequest reuse permissionsArticle Views164Altmetric-Citations17LEARN 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
Cause analysis on the break of isolator helical spring (2010)

Carries on the fracture macroscopic analysis, the SEM analysis, degree of hardness inspection, the chemical element analysis and the organization analysis to the break isolator helical spring, thought the isolator spring because of the surface decarburization level existence, receives the outer layer fixed friction to cause the micro crack the germination, the expansion is the spring break primary cause‥
A flexible multimedia cooperative product design platform framework (2003)

Cooperative work is becoming a comprehensive and effective product design method, and the application of multimedia and multiple design modes has made cooperative design system more natural and easier to use. By now, most of the cooperative design is specific-task oriented and carried out through a specific multimedia cooperative design tool. But with the improved requirements of agility and design efficiency of product design, more and more attention is paid to the design platform that supports multiple design tasks using multiple cooperative design tools. Based on the analysis of a comprehensive cooperative design model, this paper presents a framework supporting multimedia and multiple design modes. This framework is based on an open hierarchy, which is able to embed multiple cooperative design tools. And it also provides a series of cooperative design services. Then several key technologies of the framework are discussed: the intelligent agent based cooperative tool configuration technique, synchronous/asynchronous design mode control, consistency control of the cooperative design object, and at last the extensible multimedia organization model. Finally, this paper will present an application example of the framework, and then will evaluate the framework and draw a conclusion.
Covid-19 Breakthrough Infections in Vaccinated Health Care Workers (2021)

Among fully vaccinated health care workers, the occurrence of breakthrough infections with SARS-CoV-2 was correlated with neutralizing antibody titers during the peri-infection period. Most breakthrough infections were mild or asymptomatic, although persistent symptoms did occur.
Detection of Sialic Acid Residues and Studies of Their Organization in Normal and Tumor α<sub>1</sub>-Acid Glycoproteins as Probed by Surface-Enhanced Raman Spectroscopy (1993)

Surface-enhanced Raman scattering (SERS) spectra of sialic acid (SA) benzyl, and methyl glycosides as well as natural sialylated glycoproteins from human cells of healthy donors and tumor patients have been analyzed in view of the fact that peripheral fragments of many bioactive glycoconjugates are SA residues. SA residues can be detected by SERS at concentrations as low as 10 −6 M. The pattern of interaction of SA with the surface of a silver hydrosol involves the C-8 and C-9 hydroxy groups of SA. SERS spectroscopy is sensitive to changes in the content and type of branching of sialylated sugar chains in sialylglycoproteins. The differences in sialylated sugar-chain organization for α 1 -acid glycoproteins from healthy donors and tumor patients have been detected by means of SERS spectroscopy. The first example of the detection of SA residues for a suspension of living cells has been presented.
Carbodiimide Hardening of Gelatin (1968)

AbstractCarbodiimides con rapidly and effectively crosslink gelatin solutions and films. By proper choice of gelatin concentration and pH, these fast acting hardeners can be incorporated in gelatin solutions which have stable viscosity and can be cast into films which rapidly harden without after-hardening. Carbodiimides are attractive os hardeners for gelatin—silver halide photographic emulsions. NotesPaper presented at a symposium on "Photographic Gelatin", organized by the Science Committee of the Royal Photographic Society on 19–22 September 1963 in Cambridge, England.
A simplex-like method with bisection for linear programming<sup>1</sup> (1991)

The simplex method carries out the pivoting operation on a series of the canonical systems. Using an opposite type of canonical system and according pivoting operation, the proposed method also generates a sequence of points, leading to an optimal vertex; however, these points are generally no longer vertices of the underlying polyhedron. Starting with a bracket on the optimal value and at a “good” basis, it proceeds with objective function values under full control, and promisingly reducing computational cost. The method does not introduce artificial variables.
Low threshold, room temperature pulsed operation of 1.5 /spl mu/m vertical-cavity surface-emitting lasers with an optimized multi-quantum well active layer (1994)

Room temperature, pulsed operation of 1.5 μm vertical-cavity surface-emitting laser is demonstrated by the optimization of an InGaAs/InGaAsP multi-quantum well active layer, especially the number of quantum wells and the barrier thickness considering matched gain effect. Low threshold currents of 17 mA in 5×7 μm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> -devices and 25 mA in 7×10 μm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> -devices were achieved.
Morphogenesis: An Essay on Development (1952)

Morphogenesis: An Essay on Development Morphogenesis: An Essay on Development. Bonner John T.. 296 pp., 9 plates and 90 text figures. Princeton University Press, Princeton, N. J. ( 1952) $5.00. AIBS Bulletin, Volume 2, Issue 3, July 1952, Page 10, https://doi.org/10.1093/aibsbulletin/2.3.10-d Published: 01 July 1952
Feature selection using Deep Neural Networks (2015)

Feature descriptors involved in video processing are generally high dimensional in nature. Even though the extracted features are high dimensional, many a times the task at hand depends only on a small subset of these features. For example, if two actions like running and walking have to be identified, extracting features related to the leg movement of the person is enough. Since, this subset is not known apriori, we tend to use all the features, irrespective of the complexity of the task at hand. Selecting task-aware features may not only improve the efficiency but also the accuracy of the system. In this work, we propose a supervised approach for task-aware selection of features using Deep Neural Networks (DNN) in the context of action recognition. The activation potentials contributed by each of the individual input dimensions at the first hidden layer are used for selecting the most appropriate features. The selected features are found to give better classification performance than the original high-dimensional features. It is also shown that the classification performance of the proposed feature selection technique is superior to the low-dimensional representation obtained by principal component analysis (PCA).
Tectonic Evolution and Paleogeography of the Neuquén Basin, Argentina (1995)

The tectonic evolution of the Neuquen basin spans about 220 m.y. of Mesozoic-Cenozoic subsidence. Initial rifting in the Triassic was driven by extensional collapse of the Permian-Triassic orogen. This period of extension was accommodated by inherited structural inhomogeneities and a southwest-oriented extensional stress field. From the Aalenian onward, fault-controlled subsidence was replaced by regional subsidence. Several episodes of structural inversion modified the shape of the depocenter and rejuvenated fringing sedimentary source areas. The most significant inversion occurred in the late Oxfordian-earliest Kimmeridgian when the Dorsal de Huincul was formed. This Late Jurassic diastrophism marks a fundamental reorganization of extensional stress fields related to fragmentation of southwestern Gondwana and the Atlantic opening. Late Jurassic-Cretaceous extension was northwest directed. This history of tectonic evolution is reflected in a complex structural framework, at least two major hydrocarbon source rock intervals, and numerous reservoir zones.