gebhart/patrepeval huggingface dataset:
Grafting of Methyl Acrylate and Methyl Methacrylate onto Jute fiber: Physico-Chemical Characteristics of the Grafted Jute (2013)

The graft copolymerization of methyl acrylate and methyl methacrylate vinyl monomers onto jute fiber using potassium persulfate and ferrous sulfate redox system was investigated in an aqueous medium. Optimized reaction conditions for the graft copolymerization were established for parameter variables, of monomer concentration, initiator concentration, catalyst concentration, reaction time, and reaction temperature. The grafting degrees were found to depend on the above mentioned variables. A maximum graft yield of 17.3% for MA and 19.4% for MMA was obtained under effective optimized conditions for grafting. The attachment of the monomer on the grafted fiber was confirmed by FTIR studies. Dyeing was affected by monomer characteristics, and due to the development of hydrophobic nature on jute fiber by grafting, a lower amount of dye absorption occurred. Grafting has a favorable influence on tenacity, color fastness, and other properties of jute fiber.
Wideband Capon Beamforming for a Planar Phased Radar Array with Antenna Switching (2009)

A wideband beamforming algorithm for estimating the azimuth angle, elevation angle, velocity, and range using a planar phased radar array with antenna switching is proposed. It uses the time-variant steering vector model. Simulation results illustrating the performance of the proposed beamformer are presented.
Evaluation of five different cDNA labeling methods for microarrays using spike controls (2003)

Several different cDNA labeling methods have been developed for microarray based gene expression analysis. We have examined the accuracy and reproducibility of such five commercially available methods in detection of predetermined ratio values from target spike mRNAs (A. thaliana) in a background of total RNA. The five different labeling methods were: direct labeling (CyScribe), indirect labeling (FairPlay™ – aminoallyl), two protocols with dendrimer technology (3DNA® Array 50™ and 3DNA® submicro™), and hapten-antibody enzymatic labeling (Micromax™ TSA™). Ten spike controls were mixed to give expected Cy5/Cy3 ratios in the range 0.125 to 6.0. The amounts of total RNA used in the labeling reactions ranged from 5 – 50 μg. The 3DNA array 50 and CyScribe labeling methods performed best with respect to relative deviation from the expected values (16% and 17% respectively). These two methods also displayed the best overall accuracy and reproducibility. The FairPlay method had the lowest total experimental variation (22%), but the estimated values were consistently higher than the expected values (36%). TSA had both the largest experimental variation and the largest deviation from the expected values (45% and 48% respectively). We demonstrate the usefulness of spike controls in validation and comparison of cDNA labeling methods for microarray experiments.
Immunohistochemical localization of cdc6 in squamous and glandular neoplasia of the uterine cervix. (2002)

Cdc6 expression is a marker for high-grade cervical squamous and glandular dysplasia and carcinoma and is associated with HPV infection. The mechanistic basis of the association between HPV infection and Cdc6 immunopositivity remains to be determined but may represent either up-regulation of Cdc6 expression or stabilization of the Cdc6 protein.
Synthesis and Anti-HIV Activity of 4′-Substituted 4′-Thiothymidines: A New Entry Based on Nucleophilic Substitution of the 4′-Acetoxy Group (2008)

Diacetoxylation of 1-(2,5-dideoxy-beta-L-glycero-pent-4-eno-4-thiofuranosyl)thymine (13) with Pb(OAc) 4 allowed introduction of an acetoxy leaving group to the 4'-position. Nucleophilic substitution of the resulting 4'-acetoxy derivative (14) with silicon reagents enabled us to prepare the 4'-phenylthio (17a), 4'-azido (18a), 4'-methoxy (20a), and 4'-allyl (21a) analogues of 4'-thiothymidine. 4'-Cyano ( 25a) and 4'-ethynyl (31) nucleosides were also synthesized from 3',5'-bis-O-TBDMS derivative (24). Among novel 4'-substituted 4'-thiothymidines, the 4'-azido (33), 4'-cyano (36), and 4'-ethynyl (37) derivatives were found to show potent inhibitory activity against HIV-1 and HIV-2. It is noteworthy that 36 and 37 were also inhibitory against replication of HIV variant resistant to 3TC (HIV-1 M184V), being as potent as against HIV-1 IIIB.
Health public private mix and the basic package (2008)

The basic package of health services is a key component of a public and private mix in health care. But to develop a basic package is a difficult task due to all constraints of public demand, health budget, and the population ability to pay. There are some elements that have to be taken into consideration and balanced in the evaluation of the health services. Universality, comprehensiveness, and type of services are the most critical, and within a given budget these components are difficult to be increased all at once. Therefore there are services that need to be left outside the basic package and to be covered with private schemes. In this evaluation the elasticity of health services can be used to define the behaviour of health services consumption and refine the decision. Key words: public and private mix, basic health package, health care.
Selective instruction compression for memory energy reduction in embedded systems (1999)

Article Selective instruction compression for memory energy reduction in embedded systems Share on Authors: Luca Benini Universitià di Bologna, Bologna, Italy 40136 Universitià di Bologna, Bologna, Italy 40136View Profile , Alberto Macii Politecnico di Torino, Torino, Italy 10129 Politecnico di Torino, Torino, Italy 10129View Profile , Enrico Macii View Profile , Massimo Poncino Politecnico di Torino, Torino, Italy 10129 Politecnico di Torino, Torino, Italy 10129View Profile Authors Info & Claims ISLPED '99: Proceedings of the 1999 international symposium on Low power electronics and designAugust 1999 Pages 206–211https://doi.org/10.1145/313817.313927Online:17 August 1999Publication History 74citation585DownloadsMetricsTotal Citations74Total Downloads585Last 12 Months8Last 6 weeks0 Get Citation AlertsNew Citation Alert added!This alert has been successfully added and will be sent to:You will be notified whenever a record that you have chosen has been cited.To manage your alert preferences, click on the button below.Manage my AlertsNew Citation Alert!Please log in to your account Save to BinderSave to BinderCreate a New BinderNameCancelCreateExport CitationPublisher SiteGet Access
Rate two full-diversity space-frequency code design for MIMO-OFDM (2005)

In this paper we propose a high-rate full-diversity space-frequency code (SFC) for MIMO-OFDM system over multipath fading channels. The proposed SFC can achieve full-diversity with a transmission rate up to 2 symbols per channel use (pen) for two transmit antennas. The theoretical claims are confirmed by simulations and the performance compared with existing SFC.
Deep Autoencoding Gaussian Mixture Model for Unsupervised Anomaly Detection (2018)

Unsupervised anomaly detection on multi- or high-dimensional data is of great importance in both fundamental machine learning research and industrial applications, for which density estimation lies at the core. Although previous approaches based on dimensionality reduction followed by density estimation have made fruitful progress, they mainly suffer from decoupled model learning with inconsistent optimization goals and incapability of preserving essential information in the low-dimensional space. In this paper, we present a Deep Autoencoding Gaussian Mixture Model (DAGMM) for unsupervised anomaly detection. Our model utilizes a deep autoencoder to generate a low-dimensional representation and reconstruction error for each input data point, which is further fed into a Gaussian Mixture Model (GMM). Instead of using decoupled two-stage training and the standard Expectation-Maximization (EM) algorithm, DAGMM jointly optimizes the parameters of the deep autoencoder and the mixture model simultaneously in an end-to-end fashion, leveraging a separate estimation network to facilitate the parameter learning of the mixture model. The joint optimization, which well balances autoencoding reconstruction, density estimation of latent representation, and regularization, helps the autoencoder escape from less attractive local optima and further reduce reconstruction errors, avoiding the need of pre-training. Experimental results on several public benchmark datasets show that, DAGMM significantly outperforms state-of-the-art anomaly detection techniques, and achieves up to 14% improvement based on the standard F1 score.
Engagement of Heterogeneous Nuclear Ribonucleoprotein M with Listeriolysin O Induces Type I Interferon Expression and Restricts Listeria Monocytogenes Growth in Host Cells (169.12) (2012)

Abstract Listeriolysin O (LLO) is a key virulence factor secreted by the Gram-positive, facultative intracellular pathogen Listeria monocytogenes (LM). Its role in host cell response is still not very clear. Using pull-down assay, mass spectrometry analysis and immunoprecipitation approaches, we found that LLO interacted with heterogeneous nuclear ribonucleoprotein M (hnRNP M), a member of RNA splicing complex apparatus, and the binding domain of LLO for hnRNP M was located between amino acids 26-176. Knockdown of hnRNP M inhibited LLO-induced activation of IFN-α, IFN-β and AP-1 promoters and enhanced LM growth in host cells. Thus, engagement of hnRNP M with LLO induces type I interferon expression and restricts LM growth in host cells, suggesting a critical role of hnRNP M in LLO-induced immune responses in host cells. These findings will contribute to further understandings of the molecular mechanisms underlying the host defense against LM infection.
Gene expression analysis uncovers similarity and differences among Burkitt lymphoma subtypes (2011)

Burkitt lymphoma (BL) is classified into 3 clinical subsets: endemic, sporadic, and immunodeficiency-associated BL. So far, possible differences in their gene expression profiles (GEPs) have not been investigated. We studied GEPs of BL subtypes, other B-cell lymphomas, and B lymphocytes; first, we found that BL is a unique molecular entity, distinct from other B-cell malignancies. Indeed, by unsupervised analysis all BLs clearly clustered apart of other lymphomas. Second, we found that BL subtypes presented slight differences in GEPs. Particularly, they differed for genes involved in cell cycle control, B-cell receptor signaling, and tumor necrosis factor/nuclear factor κB pathways. Notably, by reverse engineering, we found that endemic and sporadic BLs diverged for genes dependent on RBL2 activity. Furthermore, we found that all BLs were intimately related to germinal center cells, differing from them for molecules involved in cell proliferation, immune response, and signal transduction. Finally, to validate GEP, we applied immunohistochemistry to a large panel of cases and showed that RBL2 can cooperate with MYC in inducing a neoplastic phenotype in vitro and in vivo. In conclusion, our study provided substantial insights on the pathobiology of BLs, by offering novel evidences that may be relevant for its classification and possibly future treatment.
One-step field-assisted ion exchange for fabrication of buried multimode optical strip waveguides (1987)

A method for one-step field-assisted silver-sodium ion exchange is proposed for the preparation of buried multimode optical strip waveguides in glass. Silver ions were supplied by a silver strip. A sodium nitrate melt was used as the anode, as well as for waveguide burial. The method provides good control over the waveguide cross-section.
El deseo de enredarse y el peligro de liarse. Un autodiagnóstico sobre los procesos de apropiación de internet por parte de los movimientos sociales y la ciudadanía activa (2006)

Los movimientos sociales y la ciudadania activa intenta apropiarse de internet y de la logica de la red. Sin embargo, junto a estos deseos de enredarse, surgen una serie de dificultades endogenas y exogenas que pueden liar mas que enredar. El presente documento ofrece un diagnostico general sobre las oportunidades y debilidades que, en el actual contexto de la globalizacion capitalista y de la sociedad informacional, ofrece internet a los movimientos sociales.
Extending healthcare's reach (2002)

Telemedicine, or treating patients from afar, promises to alter the medical landscape. Technological solutions are being implemented that can spread critical medical expertise across a region and around the globe. For example, a U.S. company believes that the shortage of physicians specializing in intensive care can be mitigated by its telemedicine system. The performance of transatlantic surgery by remote control proved that, with the right equipment, surgeons can perform and teach advanced procedures from thousands of kilometers away. Finally, in the nations and territories of the Pacific Rim, healthcare information networks are granting the regions widely scattered citizens new access to medical expertise.
Tools and methods for capturing Twitter data during natural disasters (2012)

During the course of several natural disasters in recent years, Twitter has been found to play an important role as an additional medium for many-to-many crisis communication. Emergency services are successfully using Twitter to inform the public about current developments, and are increasingly also attempting to source first-hand situational information from Twitter feeds (such as relevant hashtags). The further study of the uses of Twitter during natural disasters relies on the development of flexible and reliable research infrastructure for tracking and analysing Twitter feeds at scale and in close to real time, however. This article outlines two approaches to the development of such infrastructure: one which builds on the readily available open source platform yourTwapperkeeper to provide a low-cost, simple, and basic solution; and one which establishes a more powerful and flexible framework by drawing on highly scaleable, state-of-the-art technology.
Reactions of Low-Valent Titanocene(II) Fragments with <i>trans</i>-4,4′-Azobispyridine (RN═NR, R = C<sub>5</sub>H<sub>4</sub>N): Formation of Tetranuclear Molecular Squares by <i>trans</i>−<i>cis</i> Isomerization (2009)

The reactions of the low-valent titanocene sources [Cp*2Ti(η2-C2(TMS)2)] (2) and [tBuCp2Ti(η2-C2(TMS)2)] (3) with trans-4,4′-azobispyridine (8) leads to novel supramolecular squares [(Cp*2Ti)4(μ2-N,N′;η2-N,N′-C10H8N4)2] (10) and [(tBuCp2Ti)4(μ2-N,N′;η2-N,N′-C10H8N4)2] (11). These complexes consist of four bent-titanocene corner units and two azo ligands 8. Within this self-assembly process the azo ligands experience a conformational rearrangement from trans to cis. The titanocene moieties are embedded with two different N-donor environments, provided by the pyridyl rings and the azo functionality of 8. Single-crystal X-ray analyses of the tetranuclear compounds 10 and 11 revealed the structural features of these molecular polygons. Exclusively cis-configurated azopyridine units are detected in 10 and 11. Comparison of bond lengths and angles in coordinated and free ligands shows a reduced state of the bridging ligands in the low-valent titanium complexes 10 and 11. In such a way, the Nazo−Nazo distances are elongated from 1.251(2) Å in 8 to av 1.405(3) Å (10) and 1.434(3) Å (11), respectively. The syntheses and attributes of these novel compounds are discussed. From the reaction of [Cp2Ti(η2-C2(TMS)2)] (1) with 8, 1,2-bis(4-pyridyl)hydrazine (13) was isolated and fully characterized as a subsequent product.
Mapping Road Infrastructure in Developing Countries Applying Remote Sensing and GIS - The Case of the Taita Hills, Kenya (2007)

Road transport and –infrastructure has a fundamental meaning for the developing world. Poor quality and inadequate coverage of roads, lack of maintenance operations and outdated road maps continue to hinder economic and social development in the developing countries. This thesis focuses on studying the present state of road infrastructure and its mapping in the Taita Hills, south-east Kenya. The study is included as a part of the TAITA-project by the Department of Geography, University of Helsinki. The road infrastructure of the study area is studied by remote sensing and GIS based methodology. As the principal dataset, true colour airborne digital camera data from 2004, was used to generate an aerial image mosaic of the study area. Auxiliary data includes SPOT satellite imagery from 2003, field spectrometry data of road surfaces and relevant literature. Road infrastructure characteristics are interpreted from three test sites using pixel-based supervised classification, object-oriented supervised classifications and visual interpretation. Road infrastructure of the test sites is interpreted visually from a SPOT image. Road centrelines are then extracted from the object-oriented classification results with an automatic vectorisation process. The road infrastructure of the entire image mosaic is mapped by applying the most appropriate assessed data and techniques. The
Conductive Hybrids Based on Polyacetylene: Copolymers and Blends (1984)

Several approaches used to prepare hybrid polymers in which polyacetylene is an electroactive component are presented. Specifically, these involve the preparation of (1) composites by in-situ polymerization, (2) graft copolymers utilizing carbanions in n-type (CH)x as polymerization initiators, and (3) A-B diblock copolymers exploiting anionic-to-Ziegler-Natta transformation reactions.
Interaction of medicinals and porous powder. III. Effects of pore diameter of porous glass powder on crystalline properties. (1989)

The physicochemical properties of drug molecules in a mixture with controlled-pore glass (CPG) were studied by using differential scanning calorimetry (DSC) and powder X-ray diffraction. The DSC data indicated the presence of three states of benzoic acid in the CPG mixtures below 500 A^^° CPG pore diamter. The proportions of the three states of benzoic acid in the CPG mixture varied with the content of benzoic acid and also with the pore diamter of CPG. The amount of crystalline fraction in the mixture increased with increasing pore diameter of CPG. When benzoic acid was mixed with different pore diameters of CPG (CPG120 and CPG1000), it was found that benzoic aicd molecules preferentially interacted with CPG of small pore diameter.
The Stereochemistry and Mechanism of Reversible Polymerization of 2,2-Disubstituted 1,3-Propanediol Carbonates (1958)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Stereochemistry and Mechanism of Reversible Polymerization of 2,2-Disubstituted 1,3-Propanediol CarbonatesShalom Sarel and Leo A. PohorylesCite this: J. Am. Chem. Soc. 1958, 80, 17, 4596–4599Publication Date (Print):September 1, 1958Publication History Published online1 May 2002Published inissue 1 September 1958https://pubs.acs.org/doi/10.1021/ja01550a044https://doi.org/10.1021/ja01550a044research-articleACS PublicationsRequest reuse permissionsArticle Views622Altmetric-Citations90LEARN 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
Evidence of Structural Strain in Epitaxial Graphene Layers on 6H-SiC(0001) (2008)

The early stages of epitaxial graphene layer growth on the Si-terminated 6H-SiC (0001) are investigated by Auger electron spectroscopy (AES) and depolarized Raman spectroscopy. The selection of the depolarized component of the scattered light results in a significant increase in the C-C bond signal over the second order SiC Raman signal, which allows us to resolve submonolayer growth, including individual, localized C=C dimers in a diamondlike carbon matrix for AES C/Si ratio of approximately 3, and a strained graphene layer with delocalized electrons and Dirac single-band dispersion for AES C/Si ratio >6. The linear strain, measured at room temperature, is found to be compressive, which can be attributed to the large difference between the coefficients of thermal expansion of graphene and SiC. The magnitude of the compressive strain can be varied by adjusting the growth time at fixed annealing temperature.
Garbage collection policy for flash-aware Linux swap system (2011)

Proposed is a swap-aware garbage collection policy, called SCATA, for a flash-aware Linux swap system. SCATA not only introduces an improved victim block selection method to reduce cleaning cost and improve the degree of wear-levelling, but also redefines the concept of hot page and cold page according to the least-recently-used page replacement algorithm and clusters hot pages separately from cold pages, and then redistributes them to different free blocks during the migration step of garbage collection operation to reduce cleaning cost and obtain much more free space. Swap I/O traces from the Linux kernel have been collected and trace-driven simulations performed, which show that the proposed policy greatly outperforms existing garbage collection policies.
FeMo cofactor maturation on NifEN (2006)

FeMo cofactor (FeMoco) biosynthesis is one of the most complicated processes in metalloprotein biochemistry. Here we show that Mo and homocitrate are incorporated into the Fe/S core of the FeMoco precursor while it is bound to NifEN and that the resulting fully complemented, FeMoco-like cluster is transformed into a mature FeMoco upon transfer from NifEN to MoFe protein through direct protein-protein interaction. Our findings not only clarify the process of FeMoco maturation, but also provide useful insights into the other facets of nitrogenase chemistry.
Implantation of the automatic cardioverter-defibrillator. (1990)

The automatic implantable cardioverter-defibrillator (AICD) is an electronic device that can be implanted in patients identified as being at high risk for sudden cardiac death (SCD) due to ventricular tachycardia or fibrillation (VT/VF). This device continuously monitors heart rhythm, senses malignant arrhythmias, and aborts them by means of an electronic shock. A previous assessment of the AICD concluded that the device is safe and clinically effective in patients selected on the basis of the demonstration of inducibile Vt/VF during baseline electrophysiological study (EPS). Recent clinical experience and data have indicated that the risk of recurrent VT/VF or SCD in survivors of prior episodes is significant and unpredictable, and that inducibility at baseline EPS cannot reliably discriminate all patients who might be at either high or low risk, or responders to any therapy. Although optimal treatment for noninducible patients remains controversial, the AICD is no longer regarded as a treatment of last resort and is frequently applied as the treatment of choice in patients who are resuscitated from SCD, unassociated with a concurrent myocardial infarction, and in whom a sustained monomorphic ventricular tachycardia cannot be induced in the electrophysiological laboratory.