gebhart/patrepeval huggingface dataset:
Transition metal phthalocyanine and porphyrin complexes as catalysts for the polymerization of alkenes (2001)

Vanadium phthalocyanine and porphyrin complexes, in conjunction with methylaluminoxane (MAO) or EtAlCl 2 cocatalyst, have been found to catalyze the homopolymerization of ethene. In addition, the copolymerization of ethene with propene and 1-decene was achieved with the vanadium phthalocyanine complex and MAO. Nickel phthalocyanine complex was also found to catalyze the polymerization of ethene in the presence of MAO. However, only dimerization was observed when EtAlCl 2 was used as the cocatalyst.Key words: phthalocyanine, porphyrin, polymerization, copolymerization, ethene, propene, 1-decene.
D-4F-mediated reduction in metabolites of arachidonic and linoleic acids in the small intestine is associated with decreased inflammation in low-density lipoprotein receptor-null mice (2011)

To test the hypothesis that intestine is a major site of action for D-4F, LDLR(-/-) mice were fed a Western diet (WD) and administered the peptide subcutaneously (SQ) or orally. Plasma and liver D-4F levels were 298-fold and 96-fold higher, respectively, after SQ administration, whereas peptide levels in small intestine only varied by 1.66 ± 0.33-fold. Levels of metabolites of arachidonic and linoleic acids known to bind with high affinity to D-4F were significantly reduced in intestine, liver and hepatic bile to a similar degree whether administered SQ or orally. However, levels of 20-HETE, which is known to bind the peptide with low affinity, were unchanged. D-4F treatment reduced plasma serum amyloid A (SAA) and triglyceride levels (P < 0.03) and increased HDL-cholesterol levels (P < 0.04) similarly after SQ or oral administration. Plasma levels of metabolites of arachidonic and linoleic acids significantly correlated with SAA levels (P < 0.0001). Feeding 15-HETE in chow (without WD) significantly increased plasma SAA and triglyceride levels and decreased HDL-cholesterol and paraoxonase activity (P < 0.05), all of which were significantly ameliorated by SQ D-4F (P < 0.05). We conclude that D-4F administration reduces levels of free metabolites of arachidonic and linoleic acids in the small intestine and this is associated with decreased inflammation in LDL receptor deficient mice.
Insulin acutely regulates the expression of the peroxisome proliferator-activated receptor-gamma in human adipocytes. (1999)

Peroxisome proliferator-activated receptor (PPAR)-gamma is one of the key actors of adipocyte differentiation. This study demonstrates 1) that PPAR-gamma mRNA expression is not altered in subcutaneous adipose tissue (n = 44) or in skeletal muscle (n = 19) of subjects spanning a wide range of BMIs (20-53 kg/m2) and 2) that insulin acutely increases PPAR-gamma mRNA expression in human adipocytes both in vivo and in vitro. The effect of insulin was investigated in abdominal subcutaneous biopsies obtained before and at the end of a 3-h euglycemic-hyperinsulinemic clamp. Insulin significantly increased PPAR-gamma mRNA levels in lean subjects (88 +/- 17%, n = 6), in type 2 diabetic patients (100 +/- 19%, n = 6), and in nondiabetic obese patients (91 +/- 20%, n = 6). Both PPAR-gamma1 and PPAR-gamma2 mRNA variants were increased (P < 0.05) after insulin infusion. In isolated human adipocytes, insulin induced the two PPAR-gamma mRNAs in a dose-dependent manner, with half-maximal stimulation at a concentration of approximately 1-5 nmol/l. However, PPAR-gamma2 mRNA was rapidly (2 h) and transiently increased, whereas a slow and more progressive induction of PPAR-gamma1 was observed during the 6 h of incubation. In explants of human adipose tissue, PPAR-gamma protein levels were significantly increased (42 +/- 3%, P < 0.05) after 12 h of incubation with insulin. These data demonstrate that PPAR-gamma belongs to the list of the insulin-regulated genes and that obesity and type 2 diabetes are not associated with alteration in the expression of this nuclear receptor in adipose tissue.
To improve the efficiency of thermally activated delayed fluorescence OLEDs by controlling the horizontal orientation through optimizing stereoscopic and linear structures of indolocarbazole isomers (2018)

By optimizing linear and stereoscopic structure of emitter to obtain preferential horizontal orientation, a high EQE green device of 30.0% based on <bold>IndCzpTr-2</bold> was realized.
A Compact Dual-Band Dual-Polarized Antenna With Filtering Structures for Sub-6 GHz Base Station Applications (2018)

This letter presents a novel compact dual-band dual-polarized antenna with filtering structures for Sub-6 GHz base station applications. It is operating at the LTE (2500-2690 MHz) and Sub-6 GHz of 5G (3300-3600 MHz) bands, where the center frequency of upper-band (UB) is 1.32 times of lower-band (LB). Mutual coupling between LB and UB is suppressed by the introduction of the filtering stubs near the feeding lines. A sufficiently high isolation between LB and UB (>25 dB) is also obtained. The size of the proposed antenna is only 0.43 λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sub> × 0.43 λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sub> × 0.26 λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sub> (λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sub> is the free-wavelength at 2.6 GHz). The half power beam widths are 650 ± 50 over both bands at horizontal planes. A four-element array, which consists of four hybrid antennas (the UB element is nested in the LB element) with a small array width (only 105 mm) is also studied. The proposed antenna and its array are suitable for wireless communication applications.
Identifying redundant gate replacements in verification by error modeling (2002)

This paper considers verification of combinational circuits by test vectors under assumption of gate and wire replacement faults. Identifying redundant faults is critical to the quality and speed of such verification schemes. We propose the first known exact redundancy identification of gate replacement faults, together with its efficient approximations. While both solutions use the SAT formulation of redundancy identification, we propose the means to effectively use any single stuck-at-value redundancy identification in the approximate schemes, with varying detection accuracy. Critical to the latter are the novel uses of don't care approximations that detect many redundant faults and quickly identify those that can be detected by methods for stuck-at value faults. A test generation scheme that uses the error-correcting properties of Arithmetic Transforms is incorporated into the overall verification procedure, and is shown to provide high fault coverage for these fault models.
Wind farm power prediction: a data‐mining approach (2008)

Abstract In this paper, models for short‐ and long‐term prediction of wind farm power are discussed. The models are built using weather forecasting data generated at different time scales and horizons. The maximum forecast length of the short‐term prediction model is 12 h, and the maximum forecast length of the long‐term prediction model is 84 h. The wind farm power prediction models are built with five different data mining algorithms. The accuracy of the generated models is analysed. The model generated by a neural network outperforms all other models for both short‐ and long‐term prediction. Two basic prediction methods are presented: the direct prediction model, whereby the power prediction is generated directly from the weather forecasting data, and the integrated prediction model, whereby the prediction of wind speed is generated with the weather data, and then the power is generated with the predicted wind speed. The direct prediction model offers better prediction performance than the integrated prediction model. The main source of the prediction error appears to be contributed by the weather forecasting data. Copyright © 2008 John Wiley & Sons, Ltd.
Developments in high‐resolution positron emission tomography at MGH (1989)

Abstract The development of high resolution PET systems is important for the wider application of this techniques. The resolution of PET is limited by a number of physical factors such as positron range, small angle deviation, and sampling frequency. The design of the detector array and its sensitivity remain critical factors; designs incorporating analog coding have proven to be useful. PCR‐I, a single plane PET system, has demonstrated the concept and has produced useful images in animal studies. PCR‐II will extend the concept to a two dimensional detector array resulting in a system with high resolution and high sensitivity.
Analysis and testing of adhesive bonds (1977)

An adhesive fracture mechanics approach is described with reference to the identification and design of the best tests for evaluating a given adhesive, the definition of the most meaningful fundamental parameters by which adhesives might be characterized, and the application of these parameters to the design of joints and to the prediction of their performance. Topics include standard adhesive test techniques, the theory of adhesive fracture, and adhesive fracture energy tests. Analytical methods and computer techniques for adhesive bonding, chemical and physical aspects of adhesive fracture, and specific applications and aspects of adhesive fracture mechanics are discussed.
Fundamentals of metal-matrix composites (1994)

Processing Microstructure and characterisation Microma=echanics and mechanics of deformation Damage micromechanisms and mechanics of failure Applications.
Sequence Dependence of Peptide Fragmentation Efficiency Curves Determined by Electrospray Ionization/Surface-Induced Dissociation Mass Spectrometry (1994)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSequence Dependence of Peptide Fragmentation Efficiency Curves Determined by Electrospray Ionization/Surface-Induced Dissociation Mass SpectrometryJennifer L. Jones, Ashok R. Dongre, Arpad Somogyi, and Vicki H. WysockiCite this: J. Am. Chem. Soc. 1994, 116, 18, 8368–8369Publication Date (Print):September 1, 1994Publication History Published online1 May 2002Published inissue 1 September 1994https://pubs.acs.org/doi/10.1021/ja00097a055https://doi.org/10.1021/ja00097a055research-articleACS PublicationsRequest reuse permissionsArticle Views696Altmetric-Citations147LEARN 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
Determination of an Acidic Scale in Room Temperature Ionic Liquids (2003)

The acidity scale of different Brønsted acids in ionic liquids such as [BMIM][NTf2], [BMIM][BF4], and [BMMIM][BF4] has been investigated by determination of Hammett functions, using a spectrophotometric indicator method. This scale should permit one to correlate the acidity strength of ionic liquid systems with their ability to achieve acid-catalyzed reactions.
Timeliner Integrated Development Environment (2005)

Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2005.
Genetic screening of Hrp type III‐related pathogenicity genes controlled by the HrpB transcriptional activator in <i>Ralstonia solanacearum</i> (2004)

As in many other Gram-negative phytopathogenic bacteria, the Hrp type III secretion system is essential for the pathogenicity of Ralstonia solanacearum on host plants. The expression of most of the type III effector genes previously isolated from R. solanacearum is co-regulated with those of hrp genes by an AraC-type transcriptional activator, HrpB. In order to isolate type III-related pathogenicity genes, we screened hrpB-regulated genes in R. solanacearum. Using a transposon-based system, we isolated 30 novel hpx (hrpB-dependent expression) genes outside the hrp gene cluster. Most of the hpx genes contain a PIP (plant-inducible promoter) box-like motif in their putative promoter regions. Seven hpx genes encoded homologues of known type III effectors and type III-related proteins found in other animal and plant pathogens. Four encoded known enzymes, namely, glyoxalase I, Nudix hydrolase, spermidine synthase and transposase. Interestingly, six hpx genes encoded two types of leucine-rich repeat (LRR) protein. Products of the remaining genes did not show any significant homology to known proteins. We also identified two novel hrpB-regulated genes, hpaZ and hpaB, downstream of hrpY in the hrp cluster. The hpaB gene of R. solanacearum, but not hpaZ, was required for both the pathogenicity and ability to induce hypersensitive reaction on plants. We show that a hpaB null mutant still produces Hrp pili on the cell surface although it shows a typical Hrp-defective phenotype on plants.
NLOS ranging error mitigation in a distributed positioning algorithm for indoor UWB ad-hoc networks (2006)

A convenient technique for mitigating the impact of non-line of sight (NLOS) ranging errors on the positioning accuracy within indoor ultra wideband (UWB) ad-hoc networks is proposed in this paper. At first, classical ranging error models are adapted to the specific indoor UWB context by considering real channel measurements, which were performed in the band [2:6] GHz. Then, it is demonstrated that a prior knowledge of the ranging statistics coupled with a cooperative maximization of the global likelihood among the network, make it possible to reduce significantly the uncertainty on the estimated positions. This algorithm preserves a reasonable level of complexity in each node by adopting a distributed and asynchronous approach for the maximization process. Some simulations have been carried out to illustrate the relevance of such an approach, and predict the achievable performances of the proposed algorithm in typical 3D indoor environments. Results seem to show that the NLOS error mitigation is all the more efficient relative to traditional least-squares techniques since the connectivity is high.
Mechanical Strength Responses of Poled Lead Zirconate Titanate Under Extreme Electric Field and Various Temperature Conditions (2016)

PZT (lead zirconate titanate), particularly PZT-5A, is used in a variety of critical actuation and sensing systems because of its high Curie temperature and large piezoelectric coefficients. However, PZT is susceptible to mechanical failure. The evaluation of the mechanical strength of the material under the target working conditions is very important. This study presents part of the recent experimental developments in mechanical testing and evaluation of PZT materials at Oak Ridge National Laboratory. Ball-on-ring and four-point bending testing setups were used, with modifications made to account for testing requirements from high-level electric field and elevated temperature. The poled PZT-5A or equivalent material was tested under various specimen and testing conditions. The parameters of the distribution of strengths (characteristic strength and Weibull modulus) are discussed in relation to the testing conditions. Fractographic results based on scanning electron microscopy are also presented and discussed. The related data can serve as input for the design of piezoceramic devices, not only those used in energy systems like fuel injectors in heavy-duty diesel engines, but also those used in structural health monitoring, energy harvesting, and other critical systems in aerospace and civil engineering.
Experimental realisation of all-dielectric bianisotropic metasurfaces (2016)

All-dielectric reciprocal metasurface based on bianisotropic scatterers operating at microwave frequencies is demonstrated experimentally. Experimental studies of a single bianisotropic particle supporting both electric and magnetic Mie-type resonances are performed, and reveal that the particle with a broken symmetry exhibits different back-scattering for the opposite excitation directions. A metasurface composed of the all-dielectric bianisotropic particles is fabricated and experimentally investigated in the frequency range of 4–9 GHz. The measured data demonstrate that the metasurface is characterized by different reflection phases when being excited from the opposite directions. At the frequency 6.8 GHz, the metasurface provides a 2π phase change in the reflection spectrum with the amplitude close to 1.
Wavelength-tunable optical filters with phase-shifted DFB structures (1997)

A new wavelength-tunable optical filter which is based on a phase-shift-controlled distributed feedback structure with two phase shifts along its active layer has been studied, in particular, the effects of phase shifts on tuning range, peak power transmissivity, and side-mode suppression ratio (SMSR). The analysis indicates that when ϕ1=ϕ4=π/2, the filter wavelength tuning range is 22.1 Å for the grating coupling coefficient κ=6/ mm while maintaining almost constant transmissivity (gain) of more than 35 dB. The filter SMSR ranges from 11.1 to 25.4 dB. The results for asymmetric values of ϕ1 and ϕ4 are also given. © 1997 John Wiley & Sons, Inc. Microwave Opt Technol Lett 16: 119–122, 1997.
An adaptive rational filter for interpretation of spectrometric data (2003)

The computer-based interpretation of spectrometric data is of great importance for applications of various kinds of spectroscopy in science, biomedical engineering, environmental engineering and industry. It is based on the use of algorithms of (generalized) deconvolution for correcting spectrometric data, i.e. compensating for the instrumental effects and natural bandwidth effects distorting those data. Among many sophisticated methods currently used for this purpose no one is able to properly deal with the irregularities in the data such as variable shape of peaks the interpreted spectrum is composed of. In this paper, a flexible and efficient algorithm of generalized deconvolution is proposed, viz. an adaptive rational filter, which is proven to satisfactorily solve this problem.
Deep Rewiring: Training very sparse deep networks (2017)

Neuromorphic hardware tends to pose limits on the connectivity of deep networks that one can run on them. But also generic hardware and software implementations of deep learning run more efficiently for sparse networks. Several methods exist for pruning connections of a neural network after it was trained without connectivity constraints. We present an algorithm, DEEP R, that enables us to train directly a sparsely connected neural network. DEEP R automatically rewires the network during supervised training so that connections are there where they are most needed for the task, while its total number is all the time strictly bounded. We demonstrate that DEEP R can be used to train very sparse feedforward and recurrent neural networks on standard benchmark tasks with just a minor loss in performance. DEEP R is based on a rigorous theoretical foundation that views rewiring as stochastic sampling of network configurations from a posterior.
The influence of aprotinin on regional absorption of soluble human insulin. (1988)

1. The absorption of 6U of soluble human insulin following subcutaneous injection into the anterior abdominal wall, thigh and into the thigh following admixture with aprotinin was assessed in normal subjects. The plasma immunoreactive insulin profiles were determined during a 6 h post injection period in subjects receiving concomitantly somatostatin to suppress endogenous insulin secretion. 2. Subcutaneous injection of human insulin into the anterior abdominal wall compared with the thigh led to significantly higher incremental insulin levels between 30 and 50 min (P less than 0.05) followed by lower values at 240-300 min (P less than 0.05). The absorption of soluble human insulin from a subcutaneous depot is faster from the anterior abdominal wall compared with the thigh associated with a faster clearance from plasma. 3. Injection into the thigh of insulin admixed with aprotinin resulted in higher plasma insulin levels at 10 min (P less than 0.001) and 20 min (P less than 0.05) compared with insulin given alone. Similarly, the insulin level was significantly higher with the admixture between 10 and 20 min (P less than 0.05) compared with insulin into the anterior abdominal wall. 4. Admixture of insulin with aprotinin therefore leads to an acceleration of the early phase of absorption from subcutaneous tissue due to a local hyperaemic effect.
Sheet Metal Forming Simulations with FEM (2011)

The design of new forming tools get more problemtic as the geometries get more complicated and the materials less formable. The idea with this project is to evaluate if an implementation of a simulation software in the designing process, to simulate the forming process before actually building the tools, could help Duroc Tooling avoid expensive mistakes. To evaluate this, the commercial FEM simulation software LS-DYNA was used in a complicated project, where the design of the forming tools for forming a girder was considered. The main objective was to avoid cracking and severe wrinkling which may result in the forming process. With help of simulations a stable forming process which did not yield cracks or severe wrinkling, was eventually found. The girder was almost impossible to form without cracking, but the breakthrough came when we tried to simulate a preforming step which solved the problem. Without a simulation software this would never have been tested since it would be to risky and expensive to try an idea which could turn out to be of no use. The simulations also showed that the springback - shape deformation occuring after pressing - was large and hard to predict without simulations. Therefore, the tools were also finally springback compensated. We concluded that simulations are very effective to quickly test new ideas which may be necessary when designing the tools for forming complicated parts. Simulation also provided detailed quantitative information about the expected cracks, wrinkles, and weaknesses of the resulting pieces. Even though there is cost associated with simulations, it is obvious from this project that a simulation software is a must if Duroc Tooling wants to be a leading company in sheet metal forming tools, and stand ready for the higher demands on the products in the future.
Alkali-Induced Corneal Neovascularization Is Independent of CXCR2-Mediated Neutrophil Infiltration (2006)

CXCR2-mediated neutrophil infiltration contributes only marginally to the subsequent development of CNV.