gebhart/patrepeval huggingface dataset:
Long term performance and aging characteristics of nuclear plant pressure transmitters (1993)

This report presents the results of a comprehensive research and development project conducted for the NRC to study the effects of normal aging on calibration and response time of nuclear plant pressure, level, and flow transmitters and to develop and validate new methods for testing the performance of the transmitters as installed in nuclear power plants. The project involved research in seven areas as follows: (1) Aging tests of complete transmitter assemblies, (2) Aging tests of critical components of transmitters, (3) Testing the effects of sensing line length, blockages, and voids on the response time of pressure sensing systems, (4) Oil loss phenomenon in Rosemount and other transmitters, (5) Validation of new methods for on-line testing of response times of pressure transmitters, (6) On-line detection of oil loss, in Rosemount transmitters, and (7) Analysis of Licensee Event Report (LER) and Nuclear Plant Reliability Data System (NPRDS) databases for failures of pressure sensing systems in nuclear power plants.
An Introduction to the Kalman Filter (1995)

In 1960, R.E. Kalman published his famous paper describing a recursive solution to the discrete-data linear filtering problem. Since that time, due in large part to advances in digital computing, the Kalman filter has been the subject of extensive research and application, particularly in the area of autonomous or assisted navigation.\n\nThe Kalman filter is a set of mathematical equations that provides an efficient computational (recursive) means to estimate the state of a process, in a way that minimizes the mean of the squared error. The filter is very powerful in several aspects: it supports estimations of past, present, and even future states, and it can do so even when the precise nature of the modeled system is unknown.\n\nThe purpose of this paper is to provide a practical introduction to the discrete Kalman filter. This introduction includes a description and some discussion of the basic discrete Kalman filter, a derivation, description and some discussion of the extended Kalman filter, and a relatively simple (tangible) example with real numbers &amp; results.
Comparison of coal IGCC with and without CO2 capture and storage: Shell gasification with standard vs. partial water quench (2009)

This work provides a techno-economic assessment of Shell coal gasification -based IGCC, with and without CO2 capture and storage (CCS), focusing on the comparison between the standard Shell configuration with dry gas quench and syngas coolers versus partial water quench cooling.
CORRELATION-BASED FEATURE SELECTION STRATEGY IN CLASSIFICATION PROBLEMS (2006)

In classification problems, the issue of high dimensionality, of data is often considered important. To lower data dimensionality, feature selection methods are often employed. To select a set of features that will span a representation space that is as good as possible for the classification task, one must take into consideration possible interdependencies between the features.
27.5 A 4GS/s time-interleaved RF ADC in 65nm CMOS with 4GHz input bandwidth (2016)

The performance and power consumption of high-speed ADCs has advanced such that some receiver architectures can directly sample the input without down-conversion. This work looks to extend the applicability of such high-speed ADCs by digitizing wireless communications bands up to 4GHz with a high level of spectral purity. Fabricated in foundry 65nm CMOS and operating up to 4GS/s with power consumption of 2.2W, the reported ADC achieves noise performance of over 60dBFS and linearity performance of 64dBc at 1.842GHz input frequency. At 3.8GHz input frequency, SNR is dominated by aperture jitter of 50fs and two-tone IMD3 is >60dBFS.
Formation of Porous Metal Plates by Electrolytic Reduction (1962)

Porous metal plates having high surface areas and considerable mechanical strength were produced by the reduction of pasted metal compounds under controlled physical pressures in an electrolytic cell. The porosity of the metal plate is a function of the pressure applied during electrolysis and the metal content of the compound being reduced. Successful reduction depends upon using the proper combination of metal compound and electrolyte. Porous metals formed successfully by this technique included Ag, Fe, Bi, Sn, Sb, Zn, Cu, Cd, Pb, and the following mixtures, Sn‐Pb, Zn‐Hg, Cd‐Zn, Ag‐Cu, and Cu‐Zn. Porosities as low as 42% and as high as 89% were obtained. A small variation in the porosity of such a metal electrode may have a serious effect on its capacity as a battery anode.
CFD modeling of center cones, vortex breakers and pressure relief slits in a wind speed accelerator. (2011)

Wind power has the potential to provide access to electricity to areas lacking the resources to create industrial power plants, as well as supplement residential energy supplies. The low resource investment and ease of installation make it ideal for these scenarios; however, it is limited by the availability of a stable power source. Only 13% of the world’s land area experiences wind speeds high enough to be usable by current technology. To improve this percentage, the use of wind concentrators has been suggested. A turbine within a concentrator would experience a higher wind speed than the surrounding body of air, reducing the ambient wind speed requirement to generate electricity. In this thesis, several concentrator designs were tested. In this thesis, several designs of the following concentrator components were tested: a flow straightener, vortex breaker, and pressure relief slits. Fluent 12.1, a computational fluid dynamics (CFD) program, was used to model air flow patterns through a prototype wind concentrator and optimize its performance. Through this method, it was determined that a concentrator with a trumpet shaped entrance and exit is effective at concentrating wind energy. A long, thin center cone was most effective at accelerating a wind stream, while vortex breakers were ineffective. Maximum velocities were obtained with the addition of pressure-relief slits in the inlet portion. With an ambient inlet air stream of 2 m/s, CFD results predicted the concentrator would accelerate the air velocity to 5.17 m/s. The concentrator also predicted similar accelerations at higher inlet velocities. This data was validated by results provided by WEST Wind Power Inc. Their prototype, built from the optimized model’s blueprints, observed wind speeds in the device throat within 8% of the predicted values.
Microwave assisted synthesis of 2,6‐substituted aromatic‐aminopurine derivatives (2011)

Abstract A series of novel 2, 6‐diaromatic‐aminopurines (6a–6t) have been synthesized from guanine and characterized fully. The effects of different catalysts on the N‐alkylation of 2‐position of purine ring were discussed. J. Heterocyclic Chem., (2011).
Methyl and monoglycol esters of hydroxymethylabietanoic acid and their derivatives (1971)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMethyl and monoglycol esters of hydroxymethylabietanoic acid and their derivativesGlen W. Hedrick, Kanneth K. Sugathan, and Wilmer A. RohdeCite this: J. Chem. Eng. Data 1971, 16, 2, 161–163Publication Date (Print):April 1, 1971Publication History Published online1 May 2002Published inissue 1 April 1971https://pubs.acs.org/doi/10.1021/je60049a039https://doi.org/10.1021/je60049a039research-articleACS PublicationsRequest reuse permissionsArticle Views22Altmetric-Citations2LEARN 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
Human neutrophils employ the myeloperoxidase-hydrogen peroxide-chloride system to convert hydroxy-amino acids into glycolaldehyde, 2-hydroxypropanal, and acrolein. A mechanism for the generation of highly reactive alpha-hydroxy and alpha,beta-unsaturated aldehydes by phagocytes at sites of inflammation. (1997)

Reactive aldehydes derived from reducing sugars and lipid peroxidation play a critical role in the formation of advanced glycation end (AGE) products and oxidative tissue damage. We have recently proposed another mechanism for aldehyde generation at sites of inflammation that involves myeloperoxidase, a heme enzyme secreted by activated phagocytes. We now demonstrate that human neutrophils employ the myeloperoxidase-H202-chloride system to produce alpha-hydroxy and alpha,beta-unsaturated aldehydes from hydroxy-amino acids in high yield. Identities of the aldehydes were established using mass spectrometry and high performance liquid chromatography. Activated neutrophils converted L-serine to glycolaldehyde, an alpha-hydroxyaldehyde which mediates protein cross-linking and formation of Nepsilon-(carboxymethyl)lysine, an AGE product. L-Threonine was similarly oxidized to 2-hydroxypropanal and its dehydration product, acrolein, an extremely reactive alpha,beta-unsaturated aldehyde which alkylates proteins and nucleic acids. Aldehyde generation required neutrophil activation and a free hydroxy-amino acid; it was inhibited by catalase and heme poisons, implicating H202 and myeloperoxidase in the cellular reaction. Aldehyde production by purified myeloperoxidase required H202 and chloride, and was mimicked by reagent hypochlorous acid (HOCl) in the absence of enzyme, suggesting that the reaction pathway involves a chlorinated intermediate. Collectively, these results indicate that the myeloperoxidase-H202-chloride system of phagocytes converts free hydroxy-amino acids into highly reactive alpha-hydroxy and alpha,beta-unsaturated aldehydes. The generation of glycolaldehyde, 2-hydroxypropanal, and acrolein by activated phagocytes may thus play a role in AGE product formation and tissue damage at sites of inflammation.
Vapor Phase Growth of Functional Pentacene Films at Atmospheric Pressure (2012)

Abstract Compared to traditional vacuum evaporation techniques for small organic molecules, organic vapor phase deposition (OVPD) possesses a extra processing parameter: the pressure of process gas P ch . Here, the influence of large P ch variations (from 0.1 mbar to atmospheric pressure) on pentacene thin film growth is explored. OVPD operation at higher P ch is characterized by lower carrier gas velocities and lower organic diffusivities. These result in an invariance of the material utilization efficiency over the entire pressure span and in an advantageous equilibrium evaporation regime in the source. An increase in P ch yields rough pentacene layers. Classical nucleation theory is applied to demonstrate how the pressure rise triggers homogeneous nucleation in the gas phase, causing the observed roughening. The use of lower deposition rates, higher dilution flow rates, and higher substrate temperatures result in the suppression of gas phase nucleation and the growth of smooth pentacene films at atmospheric pressure. Using these optimized conditions, state‐of‐the‐art pentacene thin film transistors with saturation mobilities above 0.9 cm 2 /Vs are reproducibly fabricated. p‐Type circuits are also made and a 19‐stage ring oscillator with a stage delay of 51 μs at a supply voltage of 15 V is demonstrated.
The ABC Training Orchestra's First Year (1968)

Discusses the requirements of professional orchestra players which includes a high technical and musical standard and to have considerable sight-reading ability and also a sound knowledge of the standard orchestral repertoire. The task of mapping out a training programme aimed to achieve the varied objects of the orchestra are discussed.
Moisture-Related Properties of Cotton-Polyester Blend Fabrics (1976)

The moisture-related properties of a series of cotton-polyester blend broadcloths and sheetings were investigated. The composition of the broadcloth ranged from all-cotton to 68% polyester and 32% cotton, and the sheeting varied from all-cotton to 50% polyester and 50% cotton. The moisture properties measured were drop absorbency, wicking time, moisture regain, vapor transport, liquid transport, and total absorbency. The fabrics were tested untreated and finished with various durable-press treatments. Chemical additives either decreased or increased a number of measured moisture properties, some of which might be related to comfort.
Involvement of thioredoxin in rheumatoid arthritis: its costimulatory roles in the TNF-alpha-induced production of IL-6 and IL-8 from cultured synovial fibroblasts. (1999)

Thioredoxin (TRX) is a cellular reducing catalyst induced by oxidative stress and is involved in the redox regulation of transcription factors such as NF-kappaB. We found that the serum TRX concentration was elevated in patients with rheumatoid arthritis (RA) as compared with values from healthy individuals and patients with osteoarthritis (33.6 +/- 35.1 vs 11.8 +/- 6.6 ng/ml, p < 0.01). Moreover, the TRX concentration in the synovial fluid (SF) was much more elevated in RA patients than in osteoarthritis patients (103.4 +/- 53.3 vs 24.6 +/- 17.4 ng/ml, p < 0.001). Multiple regression analysis revealed that the serum C-reactive protein value was better correlated with the linear combination of SF TNF-alpha and SF TRX values than with SF TNF-alpha alone, suggesting that TRX might play a subsidiary role in the rheumatoid inflammation. We thus examined the effect of TRX on the TNF-alpha-induced IL-6 and IL-8 production using rheumatoid synovial fibroblast cultures. The extents of IL-6 and IL-8 production in response to TNF-alpha were greatly augmented by TRX as compared with TNF-alpha alone. TRX alone did not have such effects. We also found that TRX appeared to accelerate the nuclear translocation of NF-kappaB, a major transcriptional regulator for production of IL-6 and IL-8 on stimulation with TNF-alpha. Consistent with these findings, the IkappaBalpha phosphorylation at Ser32 and its subsequent degradation in response to TNF-alpha was facilitated by TRX. These findings indicate that the elevated TRX concentration in SF of RA patients might be involved in the aggravation of rheumatoid inflammation by augmenting the NF-kappaB activation pathway.
Administradores de hecho y concurso: " da mihi factum, dabo tibi ius " (2011)

The bonding between glass and other materials plays a crucial role when glass is used in industrial products. In this study, we propose a new approach to enhance the bonding strength of glass with other materials by fabricating nanoscale porous structures on glass surfaces via a chemical reaction with hydrogen fluoride gas. Herein, we present a methodology for controlling the thickness of the porous structure, clarify the relationship between the thickness and adhesion strength, investigate the shape of the formed porous structure, and propose a method to control its shape. Our findings reveal that the fabricated porous structure greatly improves the adhesion strength of the adhesive owing to the microscopic anchoring effect induced by the penetration of the adhesive into the porous structure. This approach is expected to be applied to architectural and automobile window glasses, solar panels, sensor cover glasses of autonomous vehicles, display devices (including smartphones), and wearable devices.
.NET Development for the web; Using Microsoft Office SharePoint Server 2007 and ASP.NET (2009)

For a company or organisation, it has become very important to 'exist on the web', that is\nto provide a webpage where information, goods available for purchase and services etc. are\navailable for the customers. As a natural consequence of an increased interest for the Internet\nand its fast growth, software developing companies sometimes needs to adapt their solutions\nfor the web. In this thesis, several methods and solutions for web development within .NET\nare proposed.\nThe solutions are in most cases related to Microsoft Office Excel where the possibilities\nand limitations for web publishing of workbooks are investigated. The main focus is on\nMicrosoft Office SharePoint Server 2007 and ASP.NET solutions. In SharePoint, several\nsolutions are proposed for dealing with limitations with Excel Services and Excel Web Access\nwhen publishing workbooks. SharePoint is also examined further for solutions for database\nhandling and COM automation. An application that publish Excel workbooks on the web is\ndeveloped with ASP.NET, and presenting ways of displaying and interacting with a workbook\npublished to a server. We also look at a way of presenting data visually on the web, using\nMicrosoft Chart Controls for .NET Framework 3.5 which can present data in chart format.\nOffice Open XML are proposed as an alternative for COM automation when publishing Excel\nworkbooks on the web.
The histone variant macroH2A1 marks repressed autosomal chromatin, but protects a subset of its target genes from silencing (2009)

MacroH2A1 is a histone variant that is enriched on the inactive X chromosome (Xi) in mammals and is postulated to play an important, but unknown, role in the repression of gene expression. Here we show that, although macroH2A1 marks repressed autosomal chromatin, it positively regulates transcription when located in the transcribed regions of a subset of its target genes. We used chromatin immunoprecipitation (ChIP) coupled with tiling microarrays (ChIP-chip) to determine the genomic localization of macroH2A1 in IMR90 human primary lung fibroblasts and MCF-7 breast cancer cells. The patterns of macroH2A1 deposition are largely similar across the autosomes of both cell lines. Our studies revealed a genomic localization pattern unique among histone variants; namely, the occupation by macroH2A1 of large chromatin domains (>500 kb in some cases) that contain repressive chromatin marks (e.g., histone H3 Lys 27 trimethylation). The boundaries of macroH2A1-containing domains tend to occur in promoter-proximal regions. Not all promoters, however, serve as macroH2A1 boundaries; many macroH2A1-containing chromatin domains invade the transcribed regions of genes whose products play key roles in development and cell-cell signaling. Surprisingly, the expression of a subset of these genes is positively regulated by macroH2A1. MacroH2A1 also plays a role in augmenting signal-regulated transcription, specifically for genes responsive to serum starvation. Collectively, our results document an unexpected role for macroH2A1 in the escape from heterochromatin-associated silencing and the enhancement of autosomal gene transcription.
Hyperspectral system for the detection of foreign bodies in meat products (2011)

Hyperspectral imaging is a powerful technique that combines information of spatial distribution and of the chemical composition. In this study a hyperspectral system has been used to asses the feasibility of this technology to detect defects and properties related to the composition of meat products. Foreign bodies were added to pork tenderloin samples, which were processed to obtain the corresponding hyperspectral datacubes. Multivariate analysis was applied to process the datasets and artificial images of each sample were created to display the results. The obtained results show the great potential of this technique that combines the advantages of traditional machine vision and spectroscopy.
Natural genetic resources of <i>Arabidopsis thaliana</i> reveal a high prevalence and unexpected phenotypic plasticity of <i>RPW8‐</i>mediated powdery mildew resistance (2008)

Here, an approach based on natural genetic variation was adopted to analyse powdery mildew resistance in Arabidopsis thaliana. Accessions resistant to multiple powdery mildew species were crossed with the susceptible Col-0 ecotype and inheritance of resistance was analysed. Histochemical staining was used to visualize archetypal plant defence responses such as callose deposition, hydrogen peroxide accumulation and host cell death in a subset of these ecotypes. In six accessions, resistance was likely of polygenic origin while 10 accessions exhibited evidence for a single recessively or semi-dominantly inherited resistance locus. Resistance in the latter accessions was mainly manifested at the terminal stage of the fungal life cycle by a failure of abundant conidiophore production. The resistance locus of several of these ecotypes was mapped to a genomic region containing the previously analysed atypical RPW8 powdery mildew resistance genes. Gene silencing revealed that members of the RPW8 locus were responsible for resistance to Golovinomyces orontii in seven accessions. These results suggest that broad-spectrum powdery mildew resistance in A. thaliana is predominantly of polygenic origin or based on RPW8 function. The findings shed new light on the natural variation of inheritance, phenotypic expression and pathogen range of RPW8-conditioned powdery mildew resistance.
Agmatine: multifunctional arginine metabolite and magic bullet in clinical neuroscience? (2017)

Agmatine, the decarboxylation product of arginine, was largely neglected as an important player in mammalian metabolism until the mid-1990s, when it was re-discovered as an endogenous ligand of imidazoline and α<sub>2</sub>-adrenergic receptors. Since then, a wide variety of agmatine-mediated effects have been observed, and consequently agmatine has moved from a wallflower existence into the limelight of clinical neuroscience research. Despite this quantum jump in scientific interest, the understanding of the anabolism and catabolism of this amine is still vague. The purification and biochemical characterization of natural mammalian arginine decarboxylase and agmatinase still are open issues. Nevertheless, the agmatinergic system is currently one of the most promising candidates in order to pharmacologically interfere with some major diseases of the central nervous system, which are summarized in the present review. Particularly with respect to major depression, agmatine, its derivatives, and metabolizing enzymes show great promise for the development of an improved treatment of this common disease.
Development of SNMP‐XML translator and gateway for XML‐based integrated network management (2003)

Abstract The research objective of our work is to develop a SNMP MIB to XML translation algorithm and to implement an SNMP‐XML gateway using this algorithm. The gateway is used to transfer management information between an XML‐based manager and SNMP‐based agents. SNMP is widely used for Internet management, but SNMP is insufficient to manage continuously expanding networks because of constraints in scalability and efficiency. XML–based network management architectures are newly proposed as alternatives to SNMP‐based network management, but the XML‐based Network Management System (XML‐based NMS) cannot directly manage legacy SNMP agents. We also implemented an automatic specification translator (SNMP MIB to XML Translator) and an SNMP‐XML gateway. Copyright © 2003 John Wiley &Sons, Ltd.