gebhart/patrepeval huggingface dataset:
Lessons Learned From Relative Permeability Modifications in Colombia, South America (2009)

Abstract Description This paper discusses well-interventions in Colombia that use a new generation of polymeric selective-water-reduction (SWR) product for selected candidates, treatment definition, differences of composition, radius of penetration, stages according to formation petro-physical properties, and well-productivity response in the short and long term. The evolution and improvements in technology over the past five years and its application in Colombia will also be discussed. Previous papers have presented databases with information from interventions around the world, including case histories from Colombia (Dalrymple et al. 2007). This paper will focus on more detailed information for selection, treatment, and operational procedures in Colombian fields. Application There are hydrocarbon-producing formations in Colombia that have productivity limitations because of their high relative-permeability to water. This condition has generated increased tendencies to water-coning, historical and gradual water cut increases, and promoted a negative impact during the productive well life. This technological application includes new perforated wells (which are characterized for a potential rapid water-coning based on the geographical area or the formation) or producing wells in mature fields where the intervention still presents economical benefits. Information will be presented from wells with zones covering mid-to-high permeability, clean sandstones, and argillaceous sandstones at temperatures ranging from 125 to 250°F. Results, Observations, and Conclusions There are records of successful treatments, allowing for a reduction in the water to oil ratio, with increased productivity which has been maintained for more than three years. It has been possible to identify benefits from the technology, its evolution, and improvements during recent years. However, candidate-selection criteria have been continuously adjusted, which has generated more successful cases. Significance of Subject Matter Selective water reduction (SWR) is a viable technology with an extensive history of applications worldwide, and its usage has increased during the last five years in the productive basins of Colombia. A strong, continuous improvement effort has been in place for better reservoir characterization, understanding of water-production mechanisms, laboratory protocols, candidate selection, treatment design (volume estimation, placement techniques), and treatment follow-up.
Design and Development of Terrain-adaptive and User-friendly Remote Controller for Wheel-Track Hybrid Mobile Robot Platform (2011)

Various robot platforms have been designed and developed to perform given tasks in a hazardous environment for surveillance, reconnaissance, search and rescue, etc. We considered a terrain-adaptive and transformable hybrid robot platform that is equipped with rapid navigation capability on flat floors and good performance in overcoming stairs or obstacles. The navigation mode transition is determined and implemented by adaptive driving mode control of the mobile robot. In order to maximize the usability of wheel-track hybrid robot platform, we propose a terrain-adaptive and user-friendly remote controller and verify the efficiency and performance through its navigation performance experiments in real and test-bed environments.
Combined cooperative communication and multicast for minimum power cost in coded wireless sensor networks (2011)

This paper considers the problem of power allocation for cooperative communication with multicast in coded wireless sensor networks (WSNs). We formulate and solve the problem using a cross-layer optimization framework, in which a simplified cooperative communication scheme that does not require channel state information (CSI) is considered. When compared against conventional cooperative and non-cooperative communication schemes under the same packet error rate (PER) objectives, the performance analysis shows that the simplified cooperative communication scheme achieves the lowest power cost. We then combine the simplified cooperative communication scheme with multicast using a linear optimization model, and show that for a random network topology, up to 40% power saving is achieved under stringent PER objectives.
[The importance of the endogenous agent and environmental factor thiocyanate for nonspecific and specific resistance from the hygienic viewpoint]. (1990)

Thiocyanate (previous designation rhodanide, SCN-) is a physiological substance which is ubiquitously spread in the animate nature. As an essential constituent of cell it participates in important physiological resp. biochemical processes. From the hygienic and microbiological point of view the occurrence of SCN- as environmental factor, its alimentary significance and its vitalizing effect (stimulation of nonspecific and specific warding off, stimulation of proliferation, protective effect at toxic loading) are of interest for the fundamental and applied research.
Über Antamanid, XV. Einige Derivate der phenolischen Seitenkette des Tyrosin<sup>5</sup>‐ und Tyrosin<sup>6</sup>‐antamanids (1972)

Abstract Tyr 6 ‐antamanid ( 1 ) und Tyr 5 ‐antamanid ( 2 ) werden an der phenolischen OH‐Gruppe mit Diazomethan methyliert, mit Jodessigsäureäthylester carboxymethyliert und mit 1.3‐Propansulton sulfopropyliert. 1 wird auch mit Schwefelsäure mono‐verestert und mit Acetobrom‐glucose in ein Glucosid verwandelt. Für eine mögliche Röntgenstrukturanalyse wird 1 ferner zu einem kristallisierten 3′.5′‐Dibrom‐Derivat ( 1f ) bromiert. Die antitoxischen Dosen der Derivate sind aus Tabelle 1 ersichtlich.
Picosecond Photoreduction of Inducible Nitric Oxide Synthase by Rhenium(I)−Diimine Wires (2005)

In a continuing effort to unravel mechanistic questions associated with metalloenzymes, we are developing methods for rapid delivery of electrons to deeply buried active sites. Herein, we report picosecond reduction of the heme active site of inducible nitric oxide synthase bound to a series of rhenium-diimine electron-tunneling wires, [Re(CO)3LL']+, where L is 4,7-dimethylphenanthroline and L' is a perfluorinated biphenyl bridge connecting a rhenium-ligated imidazole or aminopropylimidazole to a distal imidazole (F8bp-im (1) and C3-F8bp-im (2)) or F (F9bp (3) and C3-F9bp (4)). All four wires bind tightly (Kd in the micromolar to nanomolar range) to the tetrahydrobiopterin-free oxidase domain of inducible nitric oxide synthase (iNOSoxy). The two fluorine-terminated wires displace water from the active site, and the two imidazole-terminated wires ligate the heme iron. Upon 355-nm excitation of iNOSoxy conjugates with 1 and 2, the active site Fe(III) is reduced to Fe(II) within 300 ps, almost 10 orders of magnitude faster than the naturally occurring reduction.
Natural Gas Converter Performance and Durability (1993)

<div class="htmlview paragraph">Natural gas-fueled vehicles impose unique requirements on exhaust aftertreatment systems. Methane conversion, which is very difficult for conventional automotive catalysts, may be required, depending on future regulatory directions. Three-way converter operating windows for simultaneous conversion of HC, CO, and NO<sub>x</sub> are considerably more narrow with gas engine exhaust. While several studies have demonstrated acceptable fresh converter performance, aged performance remains a concern.</div> <div class="htmlview paragraph">This paper presents the results of a durability study of eight catalytic converters specifically developed for natural gas engines. The converters were aged for 300 hours on a natural gas-fueled 7.0L Chevrolet engine operated at net stoichiometry. Catalyst performance was evaluated using both air/fuel traverse engine tests and FTP vehicle tests. Durability cycle severity and a comparison of results for engine and vehicle tests are discussed. An analysis of the vehicle exhaust gas environment and its influence on catalyst performance is made. Conclusions are drawn regarding the durability performance of individual formulations.</div>
Soliton switching using cascaded nonlinear optical loop mirrors (2005)

We demonstrate multiple-peaked switching in a nonlinear-optical loop mirror and present an experimental investigation of device cascading in the soliton regime based on a sequence of two independent nonlinear-optical loop mirrors.Cascading leads to an enhanced switching response with sharper switching edges, flattened peaks, and increased interpeak extinction ratios.We observe that pulses emerging from the cascade retain the sech 2 temporal profile of a soliton with minimal degradation in the spectral characteristics.
Strains of <i>Mycobacterium avium</i> differentially activate human dendritic cells (2009)

Animal models indicate that exposure to environmental strains of mycobacteria can modulate immune responses and influence the effectiveness of live mycobacterial vaccines. Here, we describe that between the two recently reported Mycobacterium avium isolates, strain WAg 206 (but not strain WAg 207) interferes with human monocyte-derived dendritic cell (MDDC) activation. WAg 206, unlike WAg 207, did not elicit inflammatory cytokine production (TNFalpha, IL-1beta, IL-12) or costimulatory molecule expression (HLA-DR, CD83, CD80, CD86) by human MDDCs in vitro. These data highlight the potential for environmental mycobacteria to modulate immune responses in humans, and suggest a mechanism by which earlier exposure to such microbes may compromise the efficacy of live mycobacterial vaccines, as has been observed in some human BCG vaccine trials.
Nanoencapsulated Essential Oils with Enhanced Antifungal Activity for Potential Application on Agri-Food, Material and Environmental Fields. (1957)

Nanotechnology is a new frontier of this century that finds applications in various fields of science with important effects on our life and on the environment. Nanoencapsulation of bioactive compounds is a promising topic of nanotechnology. The excessive use of synthetic compounds with antifungal activity has led to the selection of resistant fungal species. In this context, the use of plant essential oils (EOs) with antifungal activity encapsulated in ecofriendly nanosystems could be a new and winning strategy to overcome the problem. We prepared nanoencapsules containing the essential oils of <i>Origanum vulgare</i> (OV) and <i>Thymus capitatus</i> (TC) by the nanoprecipitation method. The colloidal suspensions were characterized for size, polydispersity index (PDI), zeta potential, efficiency of encapsulation (EE) and loading capacity (LC). Finally, the essential oil nanosuspensions were assayed against a panel of fourteen fungal strains belonging to the Ascomycota and Basidiomycota phyla. Our results show that the nanosystems containing thyme and oregano essential oils were active against various fungal strains from natural environments and materials. In particular, the minimum inhibitory concentration (MIC) and minimum fungicidal concentration (MFC) values were two to four times lower than the pure essential oils. The aqueous, ecofriendly essential oil nanosuspensions with broad-spectrum antifungal activity could be a valid alternative to synthetic products, finding interesting applications in the agri-food and environmental fields.
Diving with microparticles in acoustic fields (2012)

Sound can move particles. A good example of this phenomenon is the Chladni plate, in which an acoustic wave is induced in a metallic plate and particles migrate to the nodes of the acoustic wave. For several years, acoustophoresis has been used to manipulate microparticles in microscopic scales. In this fluid dynamics video, submitted to the 30th Annual Gallery of Fluid Motion, we show the basic mechanism of the technique and a simple way of visualize it. Since acoustophoretic phenomena is essentially a three-dimensional effect, we employ a simple technique to visualize the particles in 3D. The technique is called Astigmatism Particle Tracking Velocimetry and it consists in the use of cylindrical lenses to induce a deformation in the particle shape, which will be then correlated with its distance from the observer. With this method we are able to dive with the particles and observe in detail particle motion that would otherwise be missed. The technique not only permits visualization but also precise quantitative measurements that can be compared with theory and simulations.
Synthesis of Oligoarabinofuranosides from the Mycobacterial Cell Wall (2003)

Abstract Oligoarabinofuranosides 1 − 4 , fragments of the arabinan components found in the mycobacterial cell wall have been synthesized. 1 and 2 are representative of the structural features of the internal core of arabinogalactan, arabinomannan and lipoarabinomannans. 3 is the capping motif of the lipoarabinomannan of Mycobacterium tuberculosis and M. bovis BCG while 4 is the hexasaccharide found at the non‐reducing end of arabinogalactan. Complete stereocontrol was achieved for the elaboration of glycosidic linkages between arabinofuranoside units: α‐glycosides were obtained by participation of an ester or carbonate group on the 2‐position, while β‐arabinofuranosides were secured by an internal aglycon delivery approach. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)
Gender-Specific High-Flexion Knee Prosthesis in Indian Women: A Prospective Randomised Study (2012)

The perceived advantage of a gender-specific prosthesis over a standard prosthesis did not translate into better clinical and functional outcome scores.
Preventive vaccination against Herpesvirus saimiri-induced neoplasia. (1976)

In this paper we discuss the use of Herpesvirus saimiri as a model for the development of vaccines against herpesvirus-induced neoplasia in primates. Attempts at protection against the oncogenicity of H. saimiri have centered on the inactivation of virus by heat and formalin, the production of temperature-sensitive H. saimiri mutants, and the attenuation of the virus. Each of these approaches has provided information of use in the development of vaccines that may possibly be used in man.
ChemInform Abstract: Diastereoselective Reduction of β‐Hydroxyketones with Amineboranes in the Presence of Lithium Perchlorate. (1998)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Stereospecific vinylcyclopropane rearrangement due to hindered rotation in the biradical (1971)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStereospecific vinylcyclopropane rearrangement due to hindered rotation in the biradicalJohn S. Swenton and Allan WexlerCite this: J. Am. Chem. Soc. 1971, 93, 12, 3066–3068Publication Date (Print):June 1, 1971Publication History Published online1 May 2002Published inissue 1 June 1971https://pubs.acs.org/doi/10.1021/ja00741a053https://doi.org/10.1021/ja00741a053research-articleACS PublicationsRequest reuse permissionsArticle Views79Altmetric-Citations17LEARN 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
Interventricular heterogeneity in rat heart responses to hypoxia: the tuning of glucose metabolism, ion gradients, and function (2011)

The matching of energy supply and demand under hypoxic conditions is critical for sustaining myocardial function. Numerous reports indicate that basal energy requirements and ion handling may differ between the ventricles. We hypothesized that ventricular response to hypoxia shows interventricular differences caused by the heterogeneity in glucose metabolism and expression and activity of ion transporters. Thus we assessed glucose utilization rate, ATP, sodium and potassium concentrations, Na, K-ATPase activity, and tissue reduced:oxidized glutathione (GSH/GSSG) content in the right and left ventricles before and after the exposure of either the whole animals or isolated blood-perfused hearts to hypoxia. The hypoxia-induced boost in glucose utilization was more pronounced in the left ventricle compared with the right one. ATP levels in the right ventricle of hypoxic heart were lower than those in the left ventricle. Left ventricular sodium content was higher, and hydrolytic Na, K-ATPase activity was reduced compared with the right ventricle. Administration of the Na, K-ATPase blocker ouabain caused rapid increase in the right ventricular Na(+) and elimination of the interventricular Na(+) gradients. Exposure of the hearts to hypoxia made the interventricular heterogeneity in the Na(+) distribution even more pronounced. Furthermore, systemic hypoxia caused oxidative stress that was more pronounced in the right ventricle as revealed by GSH/GSSG ratios. On the basis of these findings, we suggest that the right ventricle is more prone to hypoxic damage, as it is less efficient in recruiting glucose as an alternative fuel and is particularly dependent on the efficient Na, K-ATPase function.
Prospectively Randomized Comparison of Different Mechanical Aortic Valves (2000)

Background —The aim of this prospectively randomized study was to evaluate the hemodynamic and functional outcomes after aortic valve replacement with 3 different bileaflet mechanical valves. Methods and Results —Three hundred consecutive patients were randomly assigned to receive ATS (n=100), Carbomedics (n=100), or St Jude Medical Hemodynamic Plus (n=100) mechanical aortic valve replacement. There were no significant differences regarding patient age (average 61±8 years), body surface area (1.9±0.2 m 2 ), left ventricular function (ejection fraction 0.59±0.17), and presence of aortic stenosis (90%, 89%, and 91%), respectively. All patients had postoperative as well as 6-month and 1-year follow-ups that included transthoracic echocardiography. Multivariate statistical analysis was performed. Implanted valve sizes were comparable at 24±2 (ATS), 23.7±1.6 (CM), and 23.6±1.9 (SJM HP ) mm (NS). At 1-year follow-up, the following incidence of events was noted: death 3/1/1, all non–valve related; stroke 0/1/1; trivial transvalvular incompetence 3/3/2; paravalvular leak 2/3/2; and reoperation 0/1/1, respectively (NS). Transvalvular flow velocities were 2.5/2.6/2.4 m/s postoperatively ( P =0.03) and 2.4/2.4/2.3 m/s at 6-month follow-up, respectively (NS). There was a significant decrease in left ventricular mass for all patients but no significant differences among the groups. Conclusions —There are no clinically relevant differences among the tested bileaflet aortic valves. Regardless of valve type, there was a low complication rate. On the basis of these findings, all 3 bileaflet prostheses are well suited for aortic valve replacement.
Shadow Moiré & Projection Moiré – The Basic Relationships (2012)

This chapter contains sections titled: Introduction Basic Equation of Shadow Moiré Basic Differential Geometry Properties of Surfaces Connection between Differential Geometry and Moiré Projective Geometry and Projection Moiré Epipolar Model of the Two Projectors and One Camera System Approaches to Extend the Moiré Method to More General Conditions of Projection and Observation Summary of the Chapter References
Synthesis of 2-acetylbicyclo[2.2.1]hept-2-ene (1993)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of 2-acetylbicyclo[2.2.1]hept-2-eneLyndon A. M. Cornelius, Richard G. A. Bone, Riley H. Hastings, Matthew A. Deardorff, Randall A. Scharlach, Brett E. Hauptmann, Charles S. Stankovic, and Harold W. PinnickCite this: J. Org. Chem. 1993, 58, 11, 3188–3190Publication Date (Print):May 1, 1993Publication History Published online1 May 2002Published inissue 1 May 1993https://pubs.acs.org/doi/10.1021/jo00063a050https://doi.org/10.1021/jo00063a050research-articleACS PublicationsRequest reuse permissionsArticle Views543Altmetric-Citations7LEARN 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-AlertscloseSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts
Expert Systems and Expert Support Systems: The Next Challenge for Management (2011)

"December 1984. -- Revised September 1985."
Plasmonic Photocatalyst for Photodegradation with Spinning Optical Disk Reactor (2014)

Since concern has been raised over the environmental contamination issue, environmental remediation and green energy has become one of the most high-profile topics in recent years. In this work, we developed an environmental benign process of growing large-area ZnO nanorods on optical disk substrate, which can easily accompany with the spinning optical disk driver to significantly accelerate the surface photocatalytic degradation reaction[1].
Team Guessing with Lacunary Information (1983)

Let E be an event of probability q and let U 1 , …, U n be independent random variables. There are n observers, the ith observing the n-1 random variables other than U i . Each observer must guess whether E occurred. Then if p i is the probability of error of observer i, one has [Formula: see text] where p = max(q, 1 − q), and this bound is sharp. One application is related to a coding theorem. The coding is used to reduce degradation when data transmission is split over n parallel channels, any one of which might have broken down. The result also has a more symmetric corollary which can be stated as a probabilistic inequality of an unusual type.
Connexins Are Expressed in Primary Brain Tumors and Enhance the Bystander Effect in Gene Therapy (1999)

Most primary brain tumors express connexin-26 and connexin-43. This suggests that most primary brain tumors may be susceptible to the bystander effect of HSV-tk gene therapy. The bystander effect can be enhanced in vitro by overexpression of connexin-43 in a cell line with a high basal level of connexin-43 expression.