gebhart/patrepeval huggingface dataset:
New Determination of the Astrophysical<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>S</mml:mi></mml:math>Factor<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>S</mml:mi><mml:mrow><mml:mi>E</mml:mi><mml:mn>1</mml:mn></mml:mrow></mml:msub></mml:math>of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">C</mml:mi><mml:mprescripts/><mml:none/><mml:mn>12</mml:mn></mml:mmultiscripts><mml:mo stretchy="false">(</mml:mo><mml:mi>α</mml:mi><mml:mo>,</mml:mo><mml:mi>γ</mml:mi><mml:mo stretchy="false">)</mml:mo><mml:mmultiscripts><mml:mi mathvariant="normal">O</mml:mi><mml:mprescripts/><mml:none/><mml:mn>16</mml:mn></mml:mmultiscripts></mml:math>Reaction (2007)

A new measurement of the beta-delayed alpha decay of 16N has been performed using a set of high efficiency ionization chambers. Sources were made by implantation of a 16N beam, yielding very clean alpha spectra down to energies as low as 400 keV. Our data are in good agreement with earlier results. For the S factor S(E1), we obtain a value of 74 +/- 21 keV b. In spite of improvements in the measurement, the error in S(E1) remains relatively large because of the correlations among the fit parameters and the uncertainties inherent to the extrapolation.
Lipase in serum--the elusive enzyme: an overview (1993)

Lipase is a glycoprotein with 420-449 amino acid residues and a M(r) of 46,000-56,000 for pancreatic lipase and 32,000-39,000 for serum lipase. Lipase is present in the pancreas, intestines, and a variety of other tissues. The concentration gradient between pancreatic tissue and serum lipase is approximately 20,000-fold. Serine, as part of an Asp-His-Ser triad, is the nucleophilic residue essential for catalysis. Lipase differs from other esterases by the presence of a hydrophobic recognition site. The optimal pH is between 7.5 and 10.0, depending on the reaction condition; the pI for the various forms of the enzyme has been reported as 5.80 and 5.85; 6.4, 6.8, and 7.0; and 7.4 for a purified fraction. Several authors report the presence of two molecular forms in the pancreas and three electrophoretic bands with lipolytic activity. In normal serum two bands have been observed; in pancreatitis as many as four bands have been seen. Lipolytic activity may not always be due to lipase. Assays specific for lipase require a triglyceride as substrate as well as the presence of colipase (a water-soluble and heat-stable protein, essential for lipase action), a secondary bile salt, and Ca2+. The clinical sensitivity of all modern assays is high because of selection of a low decision limit; the clinical specificity varies greatly but can be improved by increasing the cutoff point. Lipase determinations in pancreatitis are superior to amylase determinations. The reasons for the great variability of reports regarding the clinical utility of lipase are discussed, and the clinical utility of lipase determinations is summarized.
Parametric connectivity: feasibility of learning in constrained weight space (1989)

Consideration is given to the impact on the performance of selected learning algorithms when specific artificial neural models are constrained. The particular model of constraint under consideration is parametric connectivity (PC), in which the weights of the incoming links are constrained to be a function of a relatively small number of parameters. This can, in principle, be implemented in an electrooptical system, using such devices as photodetectors, miniature electrooptical cells, and laser diodes. Low-resolution holographic mirrors may be used to direct the global structure of the network architecture. A simulation using PC has been developed. Currently, layered PC networks that implement simple logic functions are being investigated. The performance of networks that use PC units (PCU) is measured. PC is incorporated into the generalized delta rule and into genetic algorithms to measure learning capacity. PC allows almost complete generality in network implementation, while taking advantage of optical system performance.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Spin-crossover in Chromium-catalyzed Ethylene Trimerization: Density Functional Theory Study (2014)

Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095-1569, United StatesReceived March 7, 2014, Accepted May 7, 2014Key Words : Chromium catalyst, Spin-crossover, Ethylene trimerization, Density functional theoryIndustrially important linear alpha-olefins are commonlyproduced by oligomerization of ethylene or by Fischer-Tropsch synthesis followed by purification. Biggest challengefor the linear alpha olefin industry is a Schultz-Flory di-stribution of products made by most of the processes.
Décomposition de l'Opérateur de Retournement Temporel appliquée à l'imagerie et à la caractérisation ultrasonore (2006)

L'analyse de la diffusion acoustique est un outil important pour l'imagerie et de la caractérisation avec des applications en contrôle non-destructif, imagerie médicale ou acoustique sous-marine. La méthode employée dans ce manuscrit est la Décomposition de l'Opérateur de Retournement Temporel ou méthode DORT. Elle consiste à étudier les invariants du Retournement Temporel. Pour un réseau donné de transducteurs, ceux-ci correspondent aux vecteurs singuliers obtenus par décomposition en valeur singulières de la matrice K des réponses inter-éléments du réseau. Chaque vecteur est associée avec une valeur singulière. La méthode DORT est ici utilisée pour caractériser différents objets élastiques : cylindre, tube, sphère et deux cylindres. Le formalisme de décomposition du champ diffusé en modes norme de vibrations, ou harmoniques, permet de déterminer les invariants du Retournement Temporel théoriques. Il est alors possible de réduire le problème de dimension N, le nombre de transducteurs du réseau, à un problème de dimension d'ordre 2koa+1, où a est la dimension caractéristique de l'objet et ko le nombre d'onde dans le fluide environnant. Cette approche fournit des expressions analytiques des valeurs singulières, notamment dans la limite petit objet (koa< 0,5) et dans la limite de Rayleigh (2a inférieur à la tache de focalisation). Ces résultats, bien vérifiés expérimentalement, sont en accord avec le point de vue qui prévalait jusqu'alors : pour un petit diffuseur, il existe une valeur singulière principale associée au vecteur singulier focalisant de façon isotrope sur l'objet. De plus, les analogies avec l'électromagnétisme à deux dimensions sont également présentées.
First order error propagation of the Procrustes method for 3D attitude estimation (2005)

The well-known Procrustes method determines the optimal rigid body motion that registers two point clouds by minimizing the square distances of the residuals. In this paper, we perform the first order error analysis of this method for the 3D case, fully specifying how directional noise in the point clouds affects the estimated parameters of the rigid body motion. These results are much more specific than the error bounds which have been established in numerical analysis. We provide an intuitive understanding of the outcome to facilitate direct use in applications.
Performance measurement intrusion and perturbation analysis (1992)

The authors study the instrumentation perturbations of software event tracing on the Alliant FX/80 vector multiprocessor in sequential, vector, concurrent, and vector-concurrent modes. Based on experimental data, they derive a perturbation model that can approximate true performance from instrumented execution. They analyze the effects of instrumentation coverage, (i.e., the ratio of instrumented to executed statements), source level instrumentation, and hardware interactions. The results show that perturbations in execution times for complete trace instrumentations can exceed three orders of magnitude. With appropriate models of performance perturbation, these perturbations in execution time can be reduced to less than 20% while retaining the additional information from detailed traces. In general, it is concluded that it is possible to characterize perturbations through simple models. This permits more detailed, accurate instrumentation than traditionally believed possible.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Improved antitumor activity of cis-Bis-neodecanoato-trans-R,R-1,2- diaminocyclohexaneplatinum (II) entrapped in long-circulating liposomes. (1995)

Cis-bis-neodecanoato-trans-R, R-1,2-diaminocyclohexaneplatinum (II) (NDDP) has previously been formulated in conventional liposomes and shown to be nonnephrotoxic in humans, not cross-resistant with cisplatin in different in vitro and in vivo systems, and more active than cisplatin against murine models of experimental liver metastasis. The activity was attributed to the avid uptake of liposomes by the liver. To extend to the treatment of solid tumors outside the liver, NDDP was formulated, in this study, in long-circulating liposomes composed of egg phosphatidylcholine (PC), cholesterol (Chol) and polyethyleneglycol conjugated to phosphatidylethanolamine (PEG-PE). In vitro, PC/Chol/NDDP liposomes were barely toxic to murine melanoma cells B16-F0 (IC50 = 195.6 microM) as evaluated by tetrazolium dye colorimetric assay. Inclusion of PEG3000-PE into PC/Chol/NDDP liposomes significantly enhanced their cytotoxicity to a level that was comparable to that of DMPC/DMPG/NDDP liposomes (7.3 vs. 7.9 microM). Biodistribution study indicated that PC/Chol/PEG3000-PE/NDDP liposomes could preferentially localize in s.c. melanoma in C57BL/6 mice. PC/Chol/PEG3000-PE/NDDP liposomes were much more efficient in inhibiting tumor growth in vivo than free cisplatin, free NDDP or NDDP formulated in liposomes of other lipid composition. Compared with cisplatin, the in vivo toxicities of PC/Chol/PEG3000-PE/NDDP liposomes were also significantly reduced. Furthermore, if the tumor was treated with local hyperthermia after injection of PC/Chol/PEG3000-PE/NDDP liposomes, the tumor uptake of liposomes increased by 60%. The tumor inhibitory effect of PC/Chol/PEG3000-PE/NDDP was also significantly improved when combined with local hyperthermia.
Keyboard Method for Composing Chinese Characters (1975)

A keyboard method is described that allows a user to form Chinese characters. The user's keystrokes activate internal logic, which performs the necessary scaling and positioning of the character components. An initial design using a 40-key keyboard is described, together with approximations of the character shapes produced by given keying sequences. Rough estimates of speed range from eight to 33 characters per minute.
BIOSYNTHESIS OF β-D-GALACTOSIDASE CONTROLLED BY PHAGE-CARRIED GENES. I. INDUCED β-D-GALACTOSIDASE BIOSYNTHESIS AFTER TRANSDUCTION OF GENE z <sup>+</sup> BY PHAGE (1961)

Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans the biological, physical, and social sciences.
The frequency of Toxocara infection in mental retarded children (2004)

Human toxocariasis is commonly seen in places where stray and Toxocara canis-infected dog population is high. There is a strong correlation between frequency of Toxocara infection, life style, and infection risk. Institutionalization of mental retarded patients increases to risk of toxocariasis. In this study, we aimed at investigating the frequency of Toxocara infection among children with mental retardation not requiring institutionalization. The study included 96 cases, who had educatable mental retardation and 85 healthy subjects who comprised the control group. Anti-Toxocara IgG or IgM antibodies were investigated in all serum samples, using ELISA method. The frequency of Toxocara infection was found significantly higher in mental retarded cases than in those in the control group (18.8% and 7.1% respectively) (p < 0.05). There was no significant difference between mental retarded children and the control group in terms of mean age, age groups, gender, owning dogs and cats and duration of their ownership, socio-economic level and behavioural factors, and personal hygiene (p > 0.05). We did not find any significant difference between Toxocara seropositive and seronegative mental retarded children in terms of demographic factors and epidemiological factors that could increase the risk of Toxocara infection (p > 0.05). The present study is the first seroprevalence study carried out with a mental retarded group not requiring institutionalization. Determination of high frequency of Toxocara infection suggests that these subjects constitute a risk factor for Toxocara infection, which may be attributed to their behavioural patterns.
Synthesis of 2′‐deoxyguanosine containing a <i>N</i><sup>2</sup>‐polyamine (1993)

Abstract The synthesis of benzylated N 2 ‐(4,7,10,13‐tetraazatridec‐1‐yl)‐2′‐deoxyguanosines 4 was accomplished by a key nucleophilic reaction of the novel unsymmetrical polyamine 2 , with 3′,5′‐ O ‐(tetraisopropyldisiloxane‐1,3‐diyl)‐2‐chloro‐2′‐deoxyinosine ( 1 ).
Lossless compression of bi-level images based on context selection and hierarchical enumerative coding (2002)

We propose a lossless compression algorithm for bi-level images based on context selection and hierarchical enumerative coding. To exploit inter-pixel correlation in an image, a context that is calculated from coded pixels is obtained to rearrange a 2-D image to a 1-D binary string, and the resulting 1-D sequence undergoes hierarchical enumerative coding. The proposed method attains performance similar or superior to existing state-of-the-art schemes. Also, since the required operations are only addition and comparison, its computational complexity is substantially low.
Optimum design of the hard-switching dual sign algorithm for adaptive echo cancellation (1993)

A practical design is presented to optimize the hard-switching dual sign algorithm (HS-DSA), formed by providing the sign algorithm (SA) with a time switch for the step size, in order to obtain for the fastest convergence in adaptive echo cancellation. For the optimized HS-DSA, the two step sizes and the switching instant are chosen to yield the most rapid convergence under fixed initial and desired residual echoes. Over the range of interest in practical applications, it is shown that the worst case initial residual echo can be used to estimate the optimum switching instant. As compared to previously known variants of the SA, the optimized HS-DSA offers improved convergence performance and retains the advantage of hardware simplicity. Computer simulations are employed to show the correctness and effectiveness of the algorithm.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Promoters of<i>Agrobacterium tumefaciens</i>Ti-plasmid virulence genes (1986)

The DNA sequences of the promoter and 5' upstream regions of six Agrobacterium tumefaciens Ti-plasmid encoded virulence (vir) genes were determined. The transcription initiation sites were mapped by the S1 nuclease protection assay. In the -10 region, the vir promoters share a consensus sequence that is homologous to a DNA sequence found in the same region of E. coli promoters. In contrast, the -35 region sequences are variable. Several vir genes contain two common hexanucleotide sequences, 5'CGAGTA3' and 5'GCAATT3'. Translation initiation codons for all vir genes, except virG, are preceded by sequences homologous to the ribosome binding site sequences found in E. coli.
Satellite SDR Gateway for M2M and IoT applications (2019)

Short-range terrestrial radio communications, in low-power and low-cost configurations are the current enabler for the IoT and M2M applications. The main drawback of such applications is the need of a gateway that enables them to communicate with the world. Satellite gateways have become in recent years more affordable, opening the possibility to the aforementioned applications to get even more present in the current technological development, but still the combined equipment and especially the access costs are still prohibitive for large scale deployments. The equipment costs for a satellite gateway could be substantially lowered using the Software Defined Radio (SDR) concept which can provide a high degree of flexibility in dynamically operating multiple wireless interfaces, especially combined with the plethora of terrestrial communication standards. The design of an embedded hardware device based on SDR technologies would therefore significantly lower the overall costs of satellite communication for IoT and M2M applications. Combining the presented elements, the main goal of this paper is to analyze the requirements of the satellite part of a SDR-based gateway for M2M and IoT applications and to present a hardware implementation of the gateway together with its operational characteristics.
The chemistry of the “insoluble red” woods. Part X. Syntheses of isoflavans, isoflav-3-enes, and isoflavylium salts (1966)

C. A. Anirudhan, W. B. Whalley and M. M. E. Badran, J. Chem. Soc. C, 1966, 629 DOI: 10.1039/J39660000629
Critical examination of a method for the analysis of .alpha. and .omega. linkages in peptides containing aspartic acid and glutamic acid (1983)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCritical examination of a method for the analysis of .alpha. and .omega. linkages in peptides containing aspartic acid and glutamic acidJohn T. Capecchi, Marvin J. Miller, and G. Marc LoudonCite this: J. Org. Chem. 1983, 48, 12, 2014–2021Publication Date (Print):June 1, 1983Publication History Published online1 May 2002Published inissue 1 June 1983https://doi.org/10.1021/jo00160a015Request reuse permissionsArticle Views174Altmetric-Citations5LEARN 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 (1016 KB) Get e-AlertscloseSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts
Score-Informed Source Separation for Music Signals (2012)

In recent years, the processing of audio recordings by exploiting additional musical knowledge has turned out to be a promising research direction. In particular, additional note information as specified by a musical score or a MIDI file has been employed to support various audio processing tasks such as source separation, audio parameterization, performance analysis, or instrument equalization. In this contribution, we provide an overview of approaches for score-informed source separation and illustrate their potential by discussing innovative applications and interfaces. Additionally, to illustrate some basic principles behind these approaches, we demonstrate how score information can be integrated into the well-known non-negative matrix factorization (NMF) framework. Finally, we compare this approach to advanced methods based on parametric models.
An Integrated High-Voltage Low-Distortion Current-Feedback Linear Power Amplifier for Ultrasound Transmitters Using Digital Predistortion and Dynamic Current Biasing Techniques (2014)

A novel integrated high-voltage linear power amplifier for medical ultrasonic transmitter applications is presented in this brief. The amplifier employs a current-feedback technique with two cascading push-pull class-AB buffers. It overcomes the gain-bandwidth product limitation of a conventional voltage-feedback amplifier, capable of generating high output signal swing with a wide closed-loop bandwidth. In addition, a dynamic current biasing topology is integrated on-chip using a voltage-controlled current source and a 7-bit digital-to-analog converter (DAC). To further improve the signal linearity of the amplifier output, a digital predistortion (DPD) technique is applied by using a DAC, an analog-to-digital converter, and a digital field-programmable gate array. The presented amplifier was fabricated using a 1-μm 200-V CMOS process. The measurement results show that this integrated linear power amplifier is capable of driving a load of a 100-Ω resistor in parallel with a 300-pF capacitor while achieving a signal swing up to 180 V <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">pp</sub> with a second-order harmonic distortion as low as -50 dB. Measurement results also show that the amplifier achieves a maximum slew rate of 4 V/ns and a power efficiency of 30%. As a result, this power amplifier is expected to greatly improve medical ultrasound image quality.
Antagonists of Tumor-Specific Immunity: Tumor-Induced Immune Suppression and Host Genes that Co-opt the Anti-Tumor Immune Response (2004)

Metastatic disease is the principle cause of death for most patients with breast cancer. Conventional therapies including radiation therapy and chemotherapy are largely uneffective against metastatic disease. It is now generally appreciated that the immune system can destroy tumor cells, and numerous novel immunotherapies are currently under development. Many of these immunotherapies are dependent on activation of the host's immune system so the success of a cancer vaccine will depend on the immune status of the patient. Tolerance to tumor antigens, tumor-induced immune suppression, and the presence of immunomodulatory genes that block the development of tumor-specific immunity can potentially interfere with the therapeutic efficacy of immune-based therapies. Studies from the authors' laboratory demonstrate that although mice with bulky primary mammary tumors are immunosuppressed for T cell and antibody-mediated immunity, surgical removal of the primary tumor reverses the suppression, even when disseminated metastatic disease is present. The post-surgical reversal is associated with a large decrease in myeloid suppressor cells. In addition to tumor-induced suppression, two genes, the Stat6 and CD1 genes, are also associated with inhibiting tumor-specific immunity, since mice deficient for these genes have dramatically enhanced resistance to metastatic mammary carcinoma. Therefore, optimal delivery of immunotherapy should be coordinated with methodology that decreases immune suppression and eliminates or blocks inhibitory factors.
On the alternating current resistance of solenoidal coils (1925)

Abstract In a paper published some time ago by the present writer a formula was given for computing the alternating current resistance of single-layer coils in which the spacing of the wires is not too close. Recently Mr. C. N. Hickman has made a comparison between the measured and computed values of the resistance of solenoidal coils and has used the above formula. Owing mainly to a misconception in regard to the scope of the formula, he came to the conclusion that the formula could be in error by as much as 300 per cent. It has been pointed out, however, that when the formula is legitimately applied the discrepancy is reduced to 30 per cent. In order to account for the outstanding difference it is necessary to extend the theory so as to include closely wound coils. This extension has been made in the present paper, with the result that the difference between theory.