gebhart/patrepeval huggingface dataset:
Chemical Water & Gas Shutoff Technology – An Overview (2001)

Abstract Numerous chemical options are available for addressing excessive water and gas production problems. The chemistry of most of these options is complicated. A petroleum engineer with an average chemistry background has difficulties understanding these to a level that enables him/her to choose and apply a proper option to the problem at hand. In this paper, we provide a brief overview of all chemical water/gas shutoff (WGSO) options available to date. Monomer systems, polymer gels, relative permeability modifying polymers, inorganic gels, plastics etc. are commonly used chemical options. Less common options include viscous flooding, selective plugging with induced mineral precipitation and other miscellaneous grouting materials. Pros and cons of all these options are also discussed.
Disposing of power plant fly ash can be effected in an environmentally safe manner (1984)

At Indian River power plant, Delaware, USA, dry disposal of fly ash has been practised since 1982. The plant uses 5150 ton/day of bituminous coal and generates some 180,000 tons of dry ash annually. The landfill has been closely monitored, particularly for its effect on ground water, as well as for dust emission. A ground water monitoring network was set up, comprising 25 observation wells and 2 stream-gauge stations. Both ground water and surface-water quality are examined quarterly for heavy metals and other constituents. Column-leachate tests were carried out and the results were used to predict time-dependent leachate properties of ash and attenuation/adsorption properties of soil. A water-balance was also calculated for the site. A computer model was used to simulate ground water flow beneath the site. This confirmed that the flow is away from adjacent private property.
MR-NTD: Manifold Regularization Nonnegative Tucker Decomposition for Tensor Data Dimension Reduction and Representation (2016)

With the advancement of data acquisition techniques, tensor (multidimensional data) objects are increasingly accumulated and generated, for example, multichannel electroencephalographies, multiview images, and videos. In these applications, the tensor objects are usually nonnegative, since the physical signals are recorded. As the dimensionality of tensor objects is often very high, a dimension reduction technique becomes an important research topic of tensor data. From the perspective of geometry, high-dimensional objects often reside in a low-dimensional submanifold of the ambient space. In this paper, we propose a new approach to perform the dimension reduction for nonnegative tensor objects. Our idea is to use nonnegative Tucker decomposition (NTD) to obtain a set of core tensors of smaller sizes by finding a common set of projection matrices for tensor objects. To preserve geometric information in tensor data, we employ a manifold regularization term for the core tensors constructed in the Tucker decomposition. An algorithm called manifold regularization NTD (MR-NTD) is developed to solve the common projection matrices and core tensors in an alternating least squares manner. The convergence of the proposed algorithm is shown, and the computational complexity of the proposed method scales linearly with respect to the number of tensor objects and the size of the tensor objects, respectively. These theoretical results show that the proposed algorithm can be efficient. Extensive experimental results have been provided to further demonstrate the effectiveness and efficiency of the proposed MR-NTD algorithm.
Effect of ${Y_2}{O_3}$Buffer Layer on the Characteristics of Pt/$YMnO_3$/$Y_2$$O_3$/Si(MFIS) Structure (2000)

The Pt/YMnO/YO/Si structure for metal/ferroelectric/insulator/semiconductor(MFIS)-FET was fabricated and effect of Olayer on the properties of MFIS structure was investigated. The O thin films on p-type Si(111) substrate deposited by Pulsed Laser Deposition were crystallized along (111) orientation irrespective of the deposition temperatures. Ferroelectric YMnO thin films deposited directly on p-type Si (111) by MOCVD resulted in Mn deficient layer between Si and YMnO. However, YMnO thin films having good quality and stoichiometric composition can be obtained by adopting O buffer layer. The memory window of the Othin films with YMnO film is greater than that of the YMnO thin films without O film after the annealing at 85 in vacuum ambient(100mtorr). The memory window is 1.3V at an applied voltage of 5V.
Structure, function and mechanism of exocyclic DNA methyltransferases (2006)

DNA MTases (methyltransferases) catalyse the transfer of methyl groups to DNA from AdoMet (S-adenosyl-L-methionine) producing AdoHcy (S-adenosyl-L-homocysteine) and methylated DNA. The C5 and N4 positions of cytosine and N6 position of adenine are the target sites for methylation. All three methylation patterns are found in prokaryotes, whereas cytosine at the C5 position is the only methylation reaction that is known to occur in eukaryotes. In general, MTases are two-domain proteins comprising one large and one small domain with the DNA-binding cleft located at the domain interface. The striking feature of all the structurally characterized DNA MTases is that they share a common core structure referred to as an 'AdoMet-dependent MTase fold'. DNA methylation has been reported to be essential for bacterial virulence, and it has been suggested that DNA adenine MTases (Dams) could be potential targets for both vaccines and antimicrobials. Drugs that block Dam could slow down bacterial growth and therefore drug-design initiatives could result in a whole new generation of antibiotics. The transfer of larger chemical entities in a MTase-catalysed reaction has been reported and this represents an interesting challenge for bio-organic chemists. In general, amino MTases could therefore be used as delivery systems for fluorescent or other reporter groups on to DNA. This is one of the potential applications of DNA MTases towards developing non-radioactive DNA probes and these could have interesting applications in molecular biology. Being nucleotide-sequence-specific, DNA MTases provide excellent model systems for studies on protein-DNA interactions. The focus of this review is on the chemistry, enzymology and structural aspects of exocyclic amino MTases.
Gedenkschrift in honour of Dr Les Heathcote, reader in geography (2012)

It is my pleasure to introduce this volume, produced to commemorate the life and work of Dr Les Heathcote, Reader in Geography at Flinders University for many years. The term gedenkschrift can be translated into English as 'memorial writing' and this collection of papers marks the significant contribution Les made to Geography internationally, and most especially in South Australia, over a prolonged period.
Influence of Anterior Mitral Leaflet Second-Order Chordae Tendineae on Left Ventricular Systolic Function (2003)

Dividing anterior leaflet strut chordae in sheep was associated acutely with regional LV systolic dysfunction near the chordal insertion sites. Caution is necessary when embarking on procedures that cut second-order chordae to treat ischemic mitral regurgitation, since this may compromise LV systolic function in ventricles that are already impaired.
High Interleukin 17 Expression Is Correlated With Better Cardiac Function in Human Chagas Disease (2012)

This study was designed to investigate whether the expression of interleukin 17 (IL-17) is associated with the indeterminate or cardiac clinical forms of Chagas disease and whether IL-17 expression can be correlated with patients' cardiac function. Our results demonstrated that cardiac Chagas patients have a lower intensity of expression of IL-17 by total lymphocytes and lower frequency of circulating T helper 17 cells. Correlative analysis showed that high IL-17 expression was associated with better cardiac function, as determined by left ventricular ejection fraction and left ventricular diastolic diameter values. Therefore, IL-17 expression can be a protective factor to prevent myocardial damage in human Chagas disease.
Utilisation industrielle actuelle et potentielle des plasmas : synthèses, traitement des poudres, traitements métallurgiques, traitements de surface (1980)

Après un bref historique de l'évolution de l'utilisation des plasmas au cours des 20 dernières années, nous nous proposons de rappeler sommairement ce qu'est un plasma en précisant notamment la notion d'équilibre et de décrire rapidement les différents types de plasmas utilisés ; arc électrique, haute fréquence, micro-ondes, décharges couronnes, décharges luminescentes, décharges ioniques en indiquant leurs caractéristiques principales, leurs coûts et les quantités de produits que l'on peut traiter. Nous présenterons alors les problèmes posés par les réactions chimiques en plasma en insistant sur le mélange des réactifs et sur la trempe, puis nous caractériserons les réactions en phase gazeuse et les réactions en phase hétérogène. Nous aborderons ensuite les traitements de surface en plasma : carburation et nitruration, traitement des surfaces polymériques, gravure par plasma, dépots de films organiques et inorganiques, traitements de surface par pulvérisation cathodique et ion plating. La dernière partie de cet exposé, de loin la plus importante, sera consacrée aux applications industrielles actuelles et potentielles de la chimie des plasmas. Nous commencerons par situer le problème énergétique dans la conjoncture actuelle avant de passer aux applications que nous classerons en fonction de la valeur ajoutée et du tonnage produit. Dans les applications déjà industrialisées, nous verrons successivement pour les produits à moyenne valeur ajoutée : la sphéroïdisation, la refusion (fours à sole et à lingots), la production des particules ultrafines (pigments en particulier), la projection de divers matériaux (oxydes, carbures, borures, siliciures, cermets, composites...) et pour les produits à forte valeur ajoutée : les circuits électroniques, les traitements de surfaces organiques et inorganiques, les applications dans le domaine de la métrologie. Enfin nous examinerons les procédés potentiellement industrialisables : tout d'abord les produits à moyenne valeur ajoutée : acétylène, oxydes d'azote, production des ferroalliages et du silicium solaire, valorisation des minerais, puis les produits à moyenne ou forte valeur ajoutée : projections, traitements de surface, amélioration de la qualité des fibres naturelles, fabrication des fibres optiques, synthèses sélectives.
Application framework for rapid agent development (2002)

Network management usually employs 2- or 3-tier, sometimes, n-tier client-server architectures. The n/sup th/ tier, counting from the user side, often is implemented as an SNMP agent. The agent developer (like any server developer) has to deal with a suite of generic middleware issues: naming, location, persistency, referential integrity. The sheer number of ATM and network management standards and the rate of changes in this area indicates that some kind of layered architecture, some level of isolation is a requirement. This paper presents one approach to rapid agent development, the approach which employs code generation and usage of predefined C++ classes. While SNMP manipulates fine-grained MIB attributes, the agent developer "thinks" objects and is probably willing to create abstractions of equipment components and modules (hubs, modems, switches, ATM virtual circuits, ISDN connections, ports, services, software components) in a form of application objects and relationships.
Plasma lipids and lipoproteins of a patient with cholesteryl ester storage disease (1984)

The plasma lipids, lipoproteins and lipolytic enzymes of a patient suffering from cholesterol ester storage disease were investigated and followed over a time period of 3 years. The patient was hypertriglyceridaemic and cholesterolaemic and exhibited very low levels of high density lipoproteins. These lipoproteins consisted almost exclusively of the HDL-subfraction-3. Apolipoprotein-B was elevated and apoAI and AII were grossly reduced. The activity of lipoprotein lipase was normal, but hepatic lipase values were increased. Lecithin: cholesterol acyltransferase was in the upper normal range. The corresponding lipoprotein and enzyme values of one brother were within normal limits but some components measured in the plasma of the father were abnormal. It is speculated that the low plasma HDL levels in this disease may be a consequence of increased hepatic lipase activity in addition to a derangement in the reverse cholesterol flow.
The Importance of Lipid Type in the Diet after Burn Injury (1986)

The effects of different types of dietary lipids were tested in burned guinea pigs. All diets were identical except for the type of lipid, with total energy intake from lipids equaling 10%. All animals received a 30% total body surface area (TBSA) flame burn and were fed identically by pump-controlled gastrostomy feedings for 14 days. When compared to safflower oil (74% linoleic acid) as well as linoleic acid alone, fish oil (18% eicosapentaenoic acid or EPA) administration resulted in less weight loss, better skeletal muscle mass, lower resting metabolic expenditure, better cell mediated immune responses, better opsonic indices, higher splenic weight, lower adrenal weight, higher serum transferrin, and lower serum C3 levels. With the exception of better cell mediated immune responses in the animals fed linoleic acid, the administration of indomethacin made little difference. These findings can be explained by a reduction in the synthesis of the dienoic prostaglandins that are derived from the omega 6 series of fatty acids, some of which are significantly immunosuppressive. Regulation of dietary lipids may be an important therapeutic advance in nutritional support after burn injury, and controlled trials should be considered.
Recognition of motion-blurred images by use of the method of moments (2002)

Image motion causes a blur that changes features of objects and therefore complicates the task of automatic recognition. In this work we develop two recognition methods for motion-blurred images. For the first method we assume that the motion function and direction during the exposure are given. We develop the relation between the blurred-image moments and the original-image moments based on the motion function only. The recognition is carried out by comparing the moments of the restored image against the moments of the image database. In the second method the motion function is not known. In this case image moments that are invariant with respect to the motion blur are identified, and only these moments are used for recognition. The advantage of the suggested methods is that no time-consuming image restoration is required prior to recognition.
Fatal Service Failures Across Cultures (2001)

Abstract This study tests the existence of service failure and recovery categories, previously defined in the United States within the Chinese cultural setting of Taiwan. The CIT method was applied and found a high similarity between U.S. and Taiwan restaurant failure types and recovery strategies, while some unique differences were discovered, suggesting a uniform approach to service may benefit international restaurant chains. Extending previous research findings, this study describes specific failure type and recovery strategies that stand out as fatal in leading to a level of dissatisfaction that cannot be recovered from and that increase in severity if ignored. These fatal failures are also shown to be more malleable to recovery strategies than non-fatal failures. This leads to increased opportunity for moderation, or amplification, of the negative impression the customer takes away from the service incident. Catastrophe theory is applied in explaining this differential reaction to failure types. Restaurant managers are encouraged to empower service employees so that non-fatal incidents can be prevented or quickly dealt with through low-cost and effective recovery strategies while establishing policies to identify and then reduce the negative consequences of fatal incidents that require more costly recovery efforts.
Lewis Acid and Hexamethyldisilazane-Promoted Efficient Synthesis of <i>N</i>-Alkyl- and <i>N</i>-Arylimide Derivatives (1997)

ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTLewis Acid and Hexamethyldisilazane-Promoted Efficient Synthesis of N-Alkyl- and N-Arylimide DerivativesPaidi Yella Reddy, Satoru Kondo, Takeshi Toru, and Yoshio UenoView Author Information Department of Applied Chemistry, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466, Japan Cite this: J. Org. Chem. 1997, 62, 8, 2652–2654Publication Date (Web):April 18, 1997Publication History Received25 November 1996Published online18 April 1997Published inissue 1 April 1997https://pubs.acs.org/doi/10.1021/jo962202chttps://doi.org/10.1021/jo962202cbrief-reportACS PublicationsCopyright © 1997 American Chemical SocietyRequest reuse permissionsArticle Views7403Altmetric-Citations183LEARN 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 SUBJECTS:Amines,Cyclization,Hydrocarbons,Lewis acids,Reaction products Get e-Alerts
High pressure jet injection of viscous solutions for endoscopic submucosal dissection (ESD): first clinical experience (2015)

Endoscopic submucosal dissection using high pressure injection of viscous macromolecular solutions is safe and effective in different parts of the digestive tract. It does not impede working with the endoscope in the maximal retroflexed position.
Acquired Copper Deficiency: A Potentially Serious and Preventable Complication Following Gastric Bypass Surgery (2009)

Copper is an essential cofactor in many enzymatic reactions vital to the normal function of the hematologic, vascular, skeletal, antioxidant, and neurologic systems. Copper deficiency in the United States is believed to be relatively rare but has been described in the setting of zinc supplementation, myelodysplastic syndrome, use of parenteral nutrition and chronic tube feeding, and in various malabsorptive syndromes, including following gastrectomy and gastric bypass surgery. Features of copper deficiency include hematologic abnormalities (anemia, neutropenia, and leukopenia) and myeloneuropathy; the latter is a rarer and often unrecognized complication of copper deficiency. We here describe two patients who presented with severe gait abnormalities and anemia combined with neutropenia several years after roux-en-Y gastric bypass (RYGB) surgery for obesity who were found to be severely copper deficient. Intravenous copper repletion resulted in the rapid correction of hematologic indices; combined intravenous and oral copper supplementation and eventual oral copper supplements alone normalized serum copper levels in each patient, but resulted in only partial resolution of the neurologic deficits. This report serves to alert physicians of the association between RYGB procedures and subsequent copper deficiency in order to avoid diagnostic delays and to improve treatment outcomes.
Influence of Rainfall Infiltration on Landslide Treatment Engineering (2012)

Rainfall infiltration can induce landslides and influence engineering treatment effects. With a landslide uncounted in expressway construction in Shanxi province as an example, the bad effect of water was analyzed. Based on changes in soil strength caused by rainfall infiltration and shear experiments of undisturbed and water-saturated sliding zone soil under several conditions, the calculation parameters of soil were determined. Distribution of the maximum principal stress and shear stress inside the supported landslide before and after the rain was calculated through FEM numerical simulation and then deformation and failure mechanism of landslide was analyzed, the results reveal that for the supported landslide, the principal stress is mainly caused by gravity before and after the rain, meanwhile infiltration can induce increase in instantaneous strain and dramatic change in maximum shearing stress which is focused on the sliding surface adjacent to the bedding plane. As mentioned above, the drainage of surface water and groundwater in landslide treatment can delay landslide deformation effectively.
Orientation and Structure of Single Electrospun Nanofibers of Poly(ethylene terephthalate) by Confocal Raman Spectroscopy (2012)

The ability to characterize individual electrospun fibers is essential in order to understand and control this complex process. In this paper, we demonstrate that confocal Raman microscopy is a powerful method to quantify molecular orientation and structure at the individual fiber level using poly(ethylene terephthalate) as a model system. Highly reproducible polarized spectra with an excellent signal-to-noise ratio were measured in 1 min or less for fibers with a diameter as little as 500 nm. The orientation of smaller fibers can also be probed using a calibration procedure. Our results reveal a very broad distribution of molecular orientation and structure within the samples: some individual fibers are completely isotropic and amorphous while others present a ⟨P2⟩ orientation parameter as large as 0.75. The development of this large orientation is accompanied by a gauche-to-trans structural conversion into the mesomorphous phase. Even the most highly oriented fibers only present a very small degree of crystallinity.
Inhibition of cellular immune reactions by zymosan. (1991)

Mice treated intraperitoneally with zymosan showed a strong inhibition of the DTHR (delayed-type hypersensitivity reaction) against sheep erythrocytes (SE), ovalbumin (OA), and alloantigen. Furthermore, the rejection time of skin transplants was nearly doubled while antibody formation against SE was significantly enhanced. When a DTHR against OA and an antibody formation against SE were induced at the same time in the same animals, than the suppressive and stimulating effects cancelled each other. These results are discussed with regard to the sensitivity of lymphocyte subpopulations, which may be different if exposed to phagocytosis-induced oxygen radicals.
Crystal Structure of a Thermophilic Cytochrome P450 from the Archaeon Sulfolobus solfataricus (2000)

The structure of the first P450 identified in Archaea, CYP119 from Sulfolobus solfataricus, has been solved in two different crystal forms that differ by the ligand (imidazole or 4-phenylimidazole) coordinated to the heme iron. A comparison of the two structures reveals an unprecedented rearrangement of the active site to adapt to the different size and shape of ligands bound to the heme iron. These changes involve unraveling of the F helix C-terminal segment to extend a loop structure connecting the F and G helices, allowing the longer loop to dip down into the active site and interact with the smaller imidazole ligand. A comparison of CYP119 with P450cam and P450eryF indicates an extensive clustering of aromatic residues may provide the structural basis for the enhanced thermal stability of CYP119. An additional feature of the 4-phenylimidazole-bound structure is a zinc ion tetrahedrally bound by symmetry-related His and Glu residues.