gebhart/patrepeval huggingface dataset:
Controlled Experiments on Instabilities and Transition to Turbulence on a Sharp Cone at Mach 3.5 (2022)

An experiment was conducted which was aimed at documenting the linear and nonlinear development of pairs of oblique waves over a 7-degree half-angle cone in the Mach 3.5 'quiet' tunnel at NASA Langley Research Center. The first element of this work was the calibration of a constant-current hot-wire anemometer to obtain quantitative mean and time-resolved measurements in the supersonic boundary layer at frequencies up to 100 kHz. Secondly an actuator hub was designed to introduce controlled disturbances into the flow at up to 70 kHz. An azimuthal array of glow discharge actuators was positioned near branch I of the TS instability and excited the oblique waves with a prescribed initial amplitude, frequency and azimuthal wave number. Spectra of the hot-wire voltage fluctuations without excitation, revealed an amplified band offrequencies which were consistent with the most amplified based on linear theory. With excitation, we observed discrete modes at the excitation frequency at the upstream locations. As this developed downstream, a subharmonic was also found to emerge. Azimuthal measurements showed these two modes to have azimuthal amplitude variations which were consistent with helicalmode pairs. The amplitude of the subharmonic was also found to vary exponentially with the initial amplitude of the fundamental mode. Measurementsat angle-of-attack were also considered to investigate the development of a cross-flow instability.
Decay ofCs55129 (1965)

The decay of $_{55}^{129}\mathrm{Cs}$ [produced by the ($\ensuremath{\alpha},2n$) reaction on ${\mathrm{I}}^{127}$] has been studied by use of the techniques of scintillation spectroscopy. The half-life of this activity was measured as 32.06\ifmmode\pm\else\textpm\fi{}0.06 h. Gamma rays with energies 94, 174, 270, 278, 321, 375, 416, 549, 591, 904, and 945 keV have been observed in the singles and coincidence measurements. The 270-keV gamma ray was observed only in the coincidence measurements. Considerable effort was made to derive accurate energy and intensity information from the spectroscopic data. The electron-capture branching ratios to the ground state and excited states were determined from the coincidence measurements; $log\mathrm{ft}$ values for the various decay branches were derived from these ratios and the gamma-ray intensity measurements. A decay scheme is presented and compared with the pairingmodel calculations of Kisslinger and Sorensen.
Identifying crosstalk genetic biomarkers linking a neurodegenerative disease, Parkinson’s disease, and periodontitis using integrated bioinformatics analyses (2022)

Five genes (i.e., FMNL1, MANSC1, PLAUR, RNASE6, and TCIRG1) were identified as crosstalk biomarkers linking PD and periodontitis. The significant correlation between these crosstalk genes and immune cells strongly suggests the involvement of immunology in linking both diseases.
Identification of universally optimal circular designs for the interference model (2017)

Many applications of block designs exhibit neighbor and edge effects. A popular remedy is to use the circular design coupled with the interference model. The search for optimal or efficient designs has been intensively studied in recent years. The circular neighbor balanced designs at distances 1 and 2 (CNBD2), including orthogonal array of type I ($\mathrm{OA}_{I}$) of strength $2$, are the two major designs proposed in literature for the purpose of estimating the direct treatment effects. They are shown to be optimal within some reasonable subclasses of designs. By using benchmark designs in approximate design theory, we show that CNBD2 is highly efficient among all possible designs when the error terms are homoscedastic and uncorrelated. However, when the error terms are correlated, these designs will be outperformed significantly by other designs. Note that CNBD2 fall into the special catalog of pseudo symmetric designs, and they only exist when the number of treatments is larger than the block size and the number of blocks is multiple of some constants. In this paper, we elaborate equivalent conditions for any design, pseudo symmetric or not, to be universally optimal for any size of experiment and any covariance structure of the error terms. This result is novel for circular designs and sheds light on other similar models in the search for optimal or efficient asymmetric designs.
Menthol Cigarette Smoking and Oesophageal Cancer (1989)

Oesophageal cancer incidence and mortality among American blacks is over three times the rate for whites. Between 1950 and 1977 the age-adjusted oesophageal cancer mortality rate approximately doubled in non-whites while remaining virtually unchanged in whites. Between World War II and the 1970s menthol cigarette sales dramatically increased, roughly paralleling the increase in oesophageal cancer among blacks. The present study uses existing data from a large hospital-based case-control study to test whether menthol cigarette smoking is related to oesophageal cancer. Oesophageal cancer cases were current smokers. Controls were matched to the cases on age (+/- 5 years) and sex, had conditions thought not to be related to tobacco use, and were also current smokers. Tabular analyses showed no change in risk for males ever-smoking menthol versus those never smoking menthol cigarettes. For women, however, there was an increased risk. Results of logistic regression analyses performed to account for potential confounding factors showed a marginally significant (P = 0.08) decrease in risk among male short term (less than 10 years) menthol smokers versus male never-menthol smokers (OR = 0.50, 95% Cl: 0.23-1.07) but no increased risk for menthol smoking of longer duration. Duration of menthol smoking fitted as a continuous variable showed no increased risk (P = 0.9) after accounting for non-menthol cigarette smoking duration (about 2% per year increase, P = 0.02). For females, the logistic analysis produced a marginally significant (P = 0.07) increased risk for longer menthol use (OR = 2.30, 95% Cl: 0.93-5.72).(ABSTRACT TRUNCATED AT 250 WORDS)
Gold(III) π‐Allyl Complexes (2019)

Abstract Gold(III) π‐complexes have been authenticated recently with alkenes, alkynes, and arenes. The key importance of Pd II π‐allyl complexes in organometallic chemistry (Tsuji–Trost reaction) prompted us to explore gold(III) π‐allyl complexes, which have remained elusive so far. The (P,C)Au III (allyl) and (methallyl) complexes 3 and 3′ were readily prepared and isolated as thermally and air‐stable solids. Spectroscopic and crystallographic analyses combined with detailed DFT calculations support tight quasi‐symmetric η 3 ‐coordination of the allyl moiety. The π‐allyl gold(III) complexes are activated towards nucleophilic additions, as substantiated with β‐diketo enolates.
Light Field Reconstruction Using Sparsity in the Continuous Fourier Domain (2014)

Sparsity in the Fourier domain is an important property that enables the dense reconstruction of signals, such as 4D light fields, from a small set of samples. The sparsity of natural spectra is often derived from continuous arguments, but reconstruction algorithms typically work in the discrete Fourier domain. These algorithms usually assume that sparsity derived from continuous principles will hold under discrete sampling. This article makes the critical observation that sparsity is much greater in the continuous Fourier spectrum than in the discrete spectrum. This difference is caused by a windowing effect. When we sample a signal over a finite window, we convolve its spectrum by an infinite sinc, which destroys much of the sparsity that was in the continuous domain. Based on this observation, we propose an approach to reconstruction that optimizes for sparsity in the continuous Fourier spectrum. We describe the theory behind our approach and discuss how it can be used to reduce sampling requirements and improve reconstruction quality. Finally, we demonstrate the power of our approach by showing how it can be applied to the task of recovering non-Lambertian light fields from a small number of 1D viewpoint trajectories.
ChemInform Abstract: REACTIONS OF PI‐CYCLOPENTADIENYLDICARBONYLRHODIUM AND PI‐CYCLOPENTADIENYLDICARBONYLIRIDIUM WITH DISUBSTITUTED ACETYLENES (1973)

Abstract Die Reaktion von π‐Cyclopentadienyldicarbonylrhodium und Diphenylacetylen in Xylol unter Rückfluß liefert neben dem Hauptprodukt (I) die neuen mehrkernigen Komplexe (IIa), (III), (IVa) sowie (V) und ein nicht identifiziertes Produkt.
Epigenetic Allelic States of a Maize Transcriptional Regulatory Locus Exhibit Overdominant Gene Action (1998)

Using alleles of the maize purple plant locus (pl), which encodes a transcriptional regulator of anthocyanin pigment synthesis, we describe a case of single-locus heterosis, or overdominance, where the heterozygote displays a phenotype that is greater than either homozygote. The Pl-Rhoades (Pl-Rh) allele is subject to epigenetic changes in gene expression, resulting in quantitatively distinct expression states. Allelic states with low-expression levels, designated Pl'-mahogany (Pl'-mah), are dominant to the high-expression state of Pl-Rh. Pl'-mah states retain low-expression levels in subsequent generations when homozygous or heterozygous with Pl-Rh. However, Pl'-mah alleles frequently exhibit higher expression levels when heterozygous with other pl alleles; illustrating an overdominant allelic relationship. Higher expression levels are also observed when Pl'-mah is hemizygous. These results suggest that persistent allelic interactions between Pl'-mah and Pl-Rh are required to maintain the low-expression state and that other pl alleles are missing sequences required for this interaction. The Pl-Rh state can be sexually transmitted from Pl'-mah/pl heterozygotes, but not from Pl'-mah hemizygotes, suggesting that fixation of the high-expression state may involve synapsis. The existence of such allele-dependent regulatory mechanisms implicates a novel importance of allele polymorphisms in the genesis and maintenance of genetic variation.
Free standing tapes of donor doped BaTiO3 for multilayer positive temperature coefficient thermistors (2020)

A disruptive method of fabricating free-standing tapes of La-doped (BaCaSrPb)TiO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf> thermistors is demonstrated. The greatest advantage is that the free-standing tapes do not require high temperature co-firing of electrodes or reduced environment cofiring — soft oxidation cycle to obtain thermal sensitivity. The approach thus solves the long-standing problem with the ceramic thermistor technology that eluded its compatibility with surface mount technology (SMT) and miniaturization. Stencil printing is employed that can fabricate up to 500 μm thick tapes in a single step, saving huge cost and processing steps for application requiring thicker films. The pastes suitable for freestanding tapes are reported. The method provides a novel route to integrate PTC elements into the chips of passive components and would lead to a massive reduction in cold resistivity when developed in multilayer laminated stacks.
The Effect of Piperidinecarboxamide Derivatives on Isolated Human Plasma Cholinesterase1 (1963)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Effect of Piperidinecarboxamide Derivatives on Isolated Human Plasma Cholinesterase1A. Lasslo, J. G. Beasley, G. G. Nelms, and G. J. EppersonCite this: J. Med. Chem. 1963, 6, 6, 811–813Publication Date (Print):November 1, 1963Publication History Published online1 May 2002Published inissue 1 November 1963https://doi.org/10.1021/jm00342a046RIGHTS & PERMISSIONSArticle Views42Altmetric-Citations13LEARN 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 (407 KB) Get e-Alerts Get e-Alerts
Coherent versus noncoherent massive SIMO systems: Which has better performance? (2015)

We consider one single-antenna transmitter communicating over a block-fading channel with a receiver that has a large number of antennas. We analyze coherent schemes with training overhead and noncoherent schemes with no training overhead. The latter systems only know the large scale fading statistics and the additive Gaussian noise power. In contrast to prior work on capacity characterizations of such systems, our approach is based on comparing error exponents with an increasing number of receive antennas. We provide an analytical lower bound on the error exponent for both coherent and noncoherent systems, and describe it explicitly for the case of a communication system with PSK constellations. Based on these analytic expressions, we show that noncoherent schemes can significantly outperform coherent schemes in channels with a strong line of sight component, low SNR or a short coherence time. We present numerical comparisons of our analytical BER performance bounds with Monte Carlo simulations for typical PSK constellations, system sizes and fading/noise statistics.
On the Perils of Unexpected Silane Generation (2010)

A number of functional group reductions reported in the literature utilize mixtures of triethoxysilane [(EtO3SiH)] and Lewis acids. It should be noted that this combination can produce the highly pyrophoric and toxic gas, silane (SiH4).
Velocity adaptive handoff algorithms for microcellular systems (1994)

Fast velocity adaptive handoff algorithms for microcellular systems capable of providing consistent and near optimal performance are presented and characterized. Guidelines are first developed for the amount of spatial averaging required for local mean estimation in microcellular systems. Afterwards, three different velocity estimators are introduced and compared with respect to their sensitivity to Rice factors, non-isotropic scattering, additive Gaussian noise, and performance in a adaptive handoff algorithm.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Potential Application of NASA Aerospace Technology to Ground-Based Power Systems (2000)

A review of some of the basic gas turbine technology being developed at the NASA John H. Glenn Research Center at Lewis Field, which may have the potential to be applied to ground based systems, is presented in this paper. Only a sampling of the large number of research activities underway at the Glenn Research Center can be represented here. The items selected for presentation are those that may lead to increased power and efficiency, reduced cycle design time and cost, improved thermal design, reduced fatigue and fracture, reduced mechanical friction and increased operating margin. The topic of improved material will be presented by Misra et al. in this conference and shall not be discussed here. The topics selected for presentation are key research activities at the Glenn Center of Excellence on Turbo-machinery. These activities should be of interest and utility to this ISABE Special Forum on Aero-Derivative Land-Based Gas Turbines and to the power industry.
Cross-media Similarity Metric Learning with Unified Deep Networks (2017)

As a highlighting research topic in the multimedia area, cross-media retrieval aims to capture the complex correlations among multiple media types. Learning better shared representation and distance metric for multimedia data is important to boost the cross-media retrieval. Motivated by the strong ability of deep neural network in feature representation and comparison functions learning, we propose the Unified Network for Cross-media Similarity Metric (UNCSM) to associate cross-media shared representation learning with distance metric in a unified framework. First, we design a two-pathway deep network pretrained with contrastive loss, and employ double triplet similarity loss for fine-tuning to learn the shared representation for each media type by modeling the relative semantic similarity. Second, the metric network is designed for effectively calculating the cross-media similarity of the shared representation, by modeling the pairwise similar and dissimilar constraints. Compared to the existing methods which mostly ignore the dissimilar constraints and only use sample distance metric as Euclidean distance separately, our UNCSM approach unifies the representation learning and distance metric to preserve the relative similarity as well as embrace more complex similarity functions for further improving the cross-media retrieval accuracy. The experimental results show that our UNCSM approach outperforms 8 state-of-the-art methods on 4 widely-used cross-media datasets.
ChemInform Abstract: Synthesis and Cytotoxic Activity of 1‐{3‐[1‐(5‐Organylsilylfuran‐2‐yl)silinan‐1‐yl]propyl}amines and Some Trimethylgermyl Analogues. (2015)

Abstract Substrates (III) are prepared following the method demonstrated for (IIIa).
Supplementary Figure 1 from Suppression of p53 by Notch in Lymphomagenesis: Implications for Initiation and Regression (2023)

Supplementary Figure 1 from Suppression of p53 by Notch in Lymphomagenesis: Implications for Initiation and Regression
Characterization of Global Patterns and the Genetics of Fusidic Acid Resistance (2011)

Fusidic acid binds to elongation factor G (EF-G), preventing its release from the ribosome, thus stalling bacterial protein synthesis. In staphylococci, high-level fusidic acid resistance is usually caused by mutations in the gene encoding EF-G, fusA, and low-level resistance is generally caused by the horizontally transferable mechanisms fusB and fusC that have a putative protective role on EF-G. In addition, fusD is responsible for intrinsic resistance in Staphylococcus saprophyticus, and alterations in the L6 portion of rplF (fusE) have a role in fusidic acid resistance. Fusidic acid has been used in Europe and Australia for decades. More recently, it has also been used in other countries and regions, but not in the United States. Worldwide fusidic acid resistance has been slow to develop, and the level of resistance and genetic mechanisms responsible generally reflect the time since introduction, indications for treatment, route of administration, and prescribing practices.
Genetic engineering of lignocellulosic biomass in grasses: from gene function analysis to targeted in planta deconstruction (2014)

RONO: Grant Reference: BBSRC/BB/J0042/1 (MB, JG, SD, LR) and BBSRC IBTI Studentship (BB/K500926/1) (RB, MB, JG).
Osteosarcoma hybrids can preferentially target alkaline phosphatase activity to matrix vesicles: Evidence for independent membrane biogenesis (1995)

Alkaline phosphatase is the marker enzyme for matrix vesicles, extracellular organelles that play a major role in primary bone formation and calcification. Recently, we developed osteosarcoma x fibrosarcoma hybrids in which alkaline phosphatase expression was greatly reduced, a phenomenon known as extinction. In the present study, we used to cell hybrids, LTA-1 and LTA-5, constructed from a human osteoblast-like osteosarcoma. TE85, and a mouse fibrosarcoma, La-t-, to examine the differential distribution of alkaline phosphatase between matrix vesicles and the plasma membrane, postulated to be the parent membrane from which matrix vesicles are derived. While alkaline phosphatase in plasma membranes was extinguished, enzyme activity in matrix vesicles from LTA-1 hybrid cells was 34.2% of that present in matrix vesicles from the TE85 parent cells and 200 times that found in La-t- matrix vesicles. Matrix vesicles from LTA-5 had alkaline phosphatase levels similar to La-t-. When other membrane enzymes (phospholipase A2, 5'-nucleotidase, and Na+/K+ ATPase) were examined, hybrid matrix vesicle and plasma membrane levels were similar to those of TE85 and significantly higher than in La-t- membrane fractions. Northern analysis detected mRNA for alkaline phosphatase in TE85 cells, but not in the hybrids or La-t- cells. In contrast, reverse transcription-polymerase chain reaction (RT-PCR) revealed alkaline phosphatase mRNA in the hybrid cells, but at very low levels. Taken together, the data indicate that regulation of plasma membrane and matrix vesicle alkaline phosphatase is independent and suggest that matrix vesicle biogenesis is independent and distinct from that of plasma membrane biogenesis. Analysis of 1B- and 1L-type alkaline phosphatase mRNA by RT-PCR showed that alternate promoter usage of the alkaline phosphatase gene was not responsible for the differential localization of this enzyme in matrix vesicle. Thus, it is likely that matrix vesicle and plasma membrane alkaline phosphatase are regulated differently at a post-transcriptional level.
Synthesis of enantiomeric chloroacetylcarnitine chlorides (1971)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of enantiomeric chloroacetylcarnitine chloridesRavindra C. Vasavada and Joseph G. TurcotteCite this: J. Med. Chem. 1971, 14, 11, 1142Publication Date (Print):November 1, 1971Publication History Published online1 May 2002Published inissue 1 November 1971https://pubs.acs.org/doi/10.1021/jm00293a042https://doi.org/10.1021/jm00293a042research-articleACS PublicationsRequest reuse permissionsArticle Views64Altmetric-Citations1LEARN 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
Experimental and theoretical study of blue InGaN/GaN multiple quantum well blue light-emitting diodes (2009)

A 2D simulation of electrical and optical characteristics of InGaN/GaN multiple quantum well blue light-emitting diodes by APSYS software with a dot-well model and well model are investigated. It shows that I-V and electrical luminescence simulation results based on the quantum dot model are in better agreement with the experimental data than that based purely on quantum well model. Moreover, simulation result also suggest that the non-equilibrium quantum transport plays an important role in the InGaN/GaN multiple quantum well light-emitting diodes.