gebhart/patrepeval huggingface dataset:
Helicobacter pylori-negative gastric ulcer (1993)

Causes of Helicobacter pylori (HP)-negative gastric ulcers (GUs) have not previously been systematically studied. In this study we examined possible causes of HP-negative GUs. Among 115 consecutive patients with endoscopic diagnoses of GU, 71 (62%) had HP infection, and 44 (38%) were found to be HP-negative. Of the 71 HP-positive patients, 47 (66%) had no other detectable causal factors, 21 (30%) were regularly taking nonsteroidal antiinflammatory drugs (NSAIDs), and three (4%) had malignant Of the 44 HP-negative patients, 29 (66%) were taking NSAIDs, two (5%) had a malignant GU, whereas 13/44 (30%) (11% of total 115) patients had no identifiable cause. These patients were classified as having idiopathic GU. Some 38/115 (33%) GUs occurred on the lesser curve, and these were more often (p = 0.012) HP-positive (76%) than prepyloric GUs (60/115 (52%)). We conclude that although most patients have an identifiable cause of GU, around 11% will have no apparent contributing factor. HP-positive GUs are more frequently located on the lesser curve. It is now important to identify the cause of GU, because this may dictate choice of management.
Editorial for focused issue “Wilson Disease: From Genetics to Management of Disease” (2019)

Wilson disease was previously called hepatolenticular degeneration. It is a rare inherited disorder preventing the body from removing copper via bile. Accordingly, copper builds up in liver and spills over to other organs, i.e., the basal ganglia of the brain.
Photocurable polymeric coatings for improved stability and multifunctionality in solution-processable photovoltaics (2017)

Photovoltaic (PV) technology has evolved rapidly in the past few decades and now encompasses a large variety of materials and device structures. A key aspect to be taken into account in any PV technology is the operational durability of these systems in outdoor conditions. Clearly, loss of performance during operation represents a significant drawback and limitation for their commercialization. In this context, the large compositional flexibility of polymeric materials as well as their proven easy processability may be of great help in imparting improved durability to PV systems. In this contribution, a series of photocurable fluoropolymeric systems will be presented that find application as multifunctional coatings for different solution-processable PV devices, including dye-sensitized solar cells (DSSCs), organic PVs (OPVs) and perovskite solar cells (PSCs). Aspects related to the chemical functionalization of the coating precursors will be addressed in view of the incorporation of multiple functionalities into the final coating material, such as high photochemical durability, luminescent down-shifting, UV-screening, high hydrophobicity and easy-cleanability. In addition, a thorough chemical and physical characterization of the coating materials will be presented. The functional properties of these systems will be evaluated by integrating them into operating DSSC, OPV and PSC devices. It will be demonstrated that by synthetically tuning the functionality of the coating system as a function of the target PV technology, improved power conversion efficiency and unmatched long-term operational stability can be achieved on all PV systems investigated. The general approach presented here gives a clear demonstration of the enormous potential of this technology for the straightforward fabrication of solution-processable PV devices with improved performance and enhanced stability without altering the chemistry of the photoactive layer.
Low Linewidth Enhancement Factor and High Optical Feedback Resistance of p-Doped Silicon Based Quantum Dot Lasers (2018)

This work shows that p-doped quantum dot lasers grown on silicon exhibit a low linewidth enhancement factor and hence a high resistance against optical feedback which are promising for isolator-free transmissions in photonic integrated circuits.
Treatment of metastatic renal cell carcinoma with high-dose bolus interleukin-2 in a non-intensive care unit: an analysis of 124 consecutively treated patients. (2001)

The frequency of objective antitumor responses in patients with ECOG scores of 1 suggests that high-dose IL-2 therapy may have comparable effectiveness in symptomatic and asymptomatic patients. High-dose IL-2 can be administered in a non-ICU setting with acceptable toxicity and the chance of clinical benefit.
Tunable single-mode output of a multimode laser in a tunable fibre grating external cavity (1987)

Tunable single-mode oscillation has been obtained from a 1.3μm multimode laser using a tunable fibre grating reflector in a fibre external cavity. The output was tuned over a 26 nm range with a secondary mode suppression greater than 25 dB at the centre of the gain profile.
Loading Actinides in Multilayered Structures for Nuclear Waste Treatment: The First Case Study of Uranium Capture with Vanadium Carbide MXene (2016)

Efficient nuclear waste treatment and environmental management are important hurdles that need to be overcome if nuclear energy is to become more widely used. Herein, we demonstrate the first case of using two-dimensional (2D) multilayered V2CTx nanosheets prepared by HF etching of V2AlC to remove actinides from aqueous solutions. The V2CTx material is found to be a highly efficient uranium (U(VI)) sorbent, evidenced by a high uptake capacity of 174 mg g(-1), fast sorption kinetics, and desirable selectivity. Fitting of the sorption isotherm indicated that the sorption followed a heterogeneous adsorption model, most probably due to the presence of heterogeneous adsorption sites. Density functional theory calculations, in combination with X-ray absorption fine structure characterizations, suggest that the uranyl ions prefer to coordinate with hydroxyl groups bonded to the V-sites of the nanosheets via forming bidentate inner-sphere complexes.
A Semi-Distributed Fast Channel Change Framework for IPTV Networks (2011)

In IPTV networks, channel change latency is a major concern for achieving the desired quality of experience at the subscribers. Since IPTV connections are established over limited capacity links, the number of channels available to each subscriber's use, at any given point in time, is strictly limited. As a direct consequence of this limitation, channel change requests need to go through the IP infrastructure, causing significant, and oftentimes unacceptable, channel switching delays. To minimize this latency, various approaches have been proposed. Among these approaches, server-based approaches are shown to achieve the best latency performance. However, since server-based approaches typically utilize unicast-based delivery techniques, they are susceptible to introducing significant overhead at the designated servers, leading to scalability related problems. In this paper, we address these problems by proposing a semi-distributed, i.e., user-assisted server-based, channel change framework. The proposed approach integrates the capabilities of a dedicated channel change server with that of IPTV subscribers to create a resource-efficient and scalable channel change framework. Through extensive simulations, we showed that the proposed framework can achieve sufficiently low channel change latency values, while significantly improving the servicing capacity of the network when compared to server-based-only channel change policies.
Low-dimensional photonic crystal waveguide modulators for 100-Gbs applications (Conference Presentation) (2017)

Optical communication networks – long-haul and short-reach as well as classical and quantum-based networks of the future – require modulators that actively alter the phase, amplitude, wavelength, and polarization of light. For decades, lithium niobate electro-optic (EO) modulators have met the requirements for EO modulation in long-haul networks. However, as optical links continue to present ever-greater advantages at shorter length scales, other more compact and integrable material platforms have been investigated, including silicon, indium phosphide, and, most recently, two-dimensional materials. Although much progress has been made on Si and InP and there is much promise for 2D materials, no technology to date has been shown with the concomitant properties of high EO bandwidth, wide optical range, low voltage, and compact size. To address this need, we have taken the approach of developing thin film BaTiO3 as an optoelectronic platform for high frequency, low voltage, and compact modulators. Epitaxial BaTiO3 films are a silicon-compatible optoelectronic material with among the highest known EO coefficient, more than 10 times larger than that of LiNbO3. Using BaTiO3 thin films with 1 mm long interaction length, we have previously demonstrated intensity modulators with voltage-length products nearly an order of magnitude smaller than that of silicon. We have also shown the potential for high frequency operation by demonstrating modulation out to 50 GHz and 28 GHz 3 dB EO bandwidth. Here we demonstrate the high-frequency and low-voltage phase modulation of light using epitaxial thin film BaTiO3. Clear EO phase modulation of 1550 nm light is measured out to 50 GHz using an optical spectral analysis method. We also show that, by incorporating low dimensional, photonic crystal (PC) waveguides to enhance the EO coefficient, the operating voltage can be significantly reduced.
The Cancer Genome Atlas Comprehensive Molecular Characterization of Renal Cell Carcinoma (2018)

Renal cell carcinoma (RCC) is not a single disease, but several histologically defined cancers with different genetic drivers, clinical courses, and therapeutic responses. The current study evaluated 843 RCC from the three major histologic subtypes, including 488 clear cell RCC, 274 papillary RCC, and 81 chromophobe RCC. Comprehensive genomic and phenotypic analysis of the RCC subtypes reveals distinctive features of each subtype that provide the foundation for the development of subtype-specific therapeutic and management strategies for patients affected with these cancers. Somatic alteration of BAP1, PBRM1, and PTEN and altered metabolic pathways correlated with subtype-specific decreased survival, while CDKN2A alteration, increased DNA hypermethylation, and increases in the immune-related Th2 gene expression signature correlated with decreased survival within all major histologic subtypes. CIMP-RCC demonstrated an increased immune signature, and a uniform and distinct metabolic expression pattern identified a subset of metabolically divergent (MD) ChRCC that associated with extremely poor survival.
Electrically coupled multi-band antenna with reactance loading (2012)

In this paper, we present hexa-bands internal antenna (LTE (band-13&band-17)/GSM850/GSM900/DCS/PCS/UMTS-1) for Smart phone applications. Proposed antenna achieved wide band performance by electrically coupled feeding and a reactance loading on radiator pattern. An antenna has a small volume of about 2.5 cc with low profile (the height is 4.5 mm) and wide-band performance (low-band bandwidth is about 51 % at 931 MHz and high-band bandwidth is about 39% at 2085 MHz).
Adversarial Autoencoders for Metasurface Design Optimization (invited) (2020)

We have coupled adversarial autoencoder deep generative network with adjoined topology optimization technique for metasurface design optimization. We have demonstrated that such approach ensures not only efficient optimization search of highly efficient metasurface designs but also provides unparalleled control over compressed design space distribution. The latter fact assures scalability of the approach to highly-constrained optimization problems.
Measuring Gait Velocity and Stride Length with an Ultrawide Bandwidth Local Positioning System and an Inertial Measurement Unit (2021)

One possible modality to profile gait speed and stride length includes using wearable technologies. Wearable technology using global positioning system (GPS) receivers may not be a feasible means to measure gait speed. An alternative may include a local positioning system (LPS). Considering that LPS wearables are not good at determining gait events such as heel strikes, applying sensor fusion with an inertial measurement unit (IMU) may be beneficial. Speed and stride length determined from an ultrawide bandwidth LPS equipped with an IMU were compared to video motion capture (i.e., the "gold standard") as the criterion standard. Ninety participants performed trials at three self-selected walk, run and sprint speeds. After processing location, speed and acceleration data from the measurement systems, speed between the last five meters and stride length in the last stride of the trial were analyzed. Small biases and strong positive intraclass correlations (0.9-1.0) between the LPS and "the gold standard" were found. The significance of the study is that the LPS can be a valid method to determine speed and stride length. Variability of speed and stride length can be reduced when exploring data processing methods that can better extract speed and stride length measurements.
Experimental Testing of a Metamaterial Slow Wave Structure for High-Power Microwave Generation (2017)

Experimental Testing of a Metamaterial Slow Wave Structure for High-Power Microwave Generation by Kevin Aaron Shipman B.S., Exercise Science, University of New Mexico, 2008 A.S., Mathematics, San Juan College, 2014 M.S., Electrical Engineering, University of New Mexico, 2018 Abstract A high-power L-band microwave source has been developed using a metamaterial (MTM) to produce a biperiodic double negative slow wave structure (SWS) for interaction with an electron beam. The beam is generated by a ~700 kV, ~6 kA short pulse (~ 10 ns) electron beam accelerator. The design of the metamaterial SWS (MSWS) consists of a cylindrical waveguide, loaded with alternating split-rings that are linearly arrayed axially down the waveguide. The beam is guided down the center of the rings by a strong axial magnetic field. The electrons interact with the MSWS producing electromagnetic radiation in the form of high-power microwaves (HPM). The Power is extracted axially by a conical horn antenna. Microwave generation is characterized by an external cutoff waveguide detector, as well as the radiation pattern of the RF. Mode characterization is performed using a neon bulb array, where the bulbs are lit by the electric field in such a way that the pattern in which they are excited resembles the field pattern. A time integrated image is of this pattern is taken by an SLR camera. Since the MTM structure has electrically small features, breakdown within the device is a concern. Therefore, a fiber-optic-fed, sub-ns photomultiplier tube array diagnostic has been developed and used to characterize light emission from breakdown. A description of the diagnostic developed and experimental results will be presented.
Annual report on SIGIR, July 1999 – June 2000 (2000)

article Share on Annual report on SIGIR, July 1999 – June 2000 Author: Susan Dumais View Profile Authors Info & Claims ACM SIGIR ForumVolume 34Issue 1April 2000 pp 11–14https://doi.org/10.1145/373593.373613Online:01 April 2000Publication History 0citation118DownloadsMetricsTotal Citations0Total Downloads118Last 12 Months1Last 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 SiteeReaderPDF
Experimental measurement of scattering coefficients in mesoscopic conductors (1992)

We describe a general experimental approach yielding the entire transmission matrix of a multiprobe mesoscopic conductor. Results are presented for several new investigations with ballistic semiconductor nanostructures enabled by this technique. We measure the transmission coefficients for an open cross junction employing a sample design which is an almost literal realization of the Landauer-B\"uttiker model and verify that these transmission coefficients are consistent with Hall and bend resistance anomalies obtained by resistance measurements at low magnetic fields. Other investigations utilize a pinched cross junction in which two of the probes are separated from the channel by quantum point contacts. This series arrangement of point contacts allows a sensitive momentum spectroscopy of the emitted distribution. Even in the case of a single propagating mode, through the constrictions we observe modal features in the outgoing distribution. This indicates that the potential is spatially nonadiabatic even though conductance quantization is observed. This pinched geometry also allows the first fully characterized realization of weakly coupled probes.
Effects of Cellular Activation on Anti-HIV-1 Restriction Factor Expression Profile in Primary Cells (2013)

Expression of cell-intrinsic antiviral factors suppresses HIV-1 replication. We hypothesized that cellular activation modulates host restriction and susceptibility to HIV-1 infection. We measured the gene expression of 34 antiviral factors in healthy peripheral blood mononuclear cells (PBMC). Cellular activation induced expression of interferon-stimulated gene 15 (ISG15), tripartite motif 5α (TRIM5α), bone marrow stromal cell antigen 2 (BST-2)/tetherin, and certain apolipoprotein B mRNA editing enzyme 3 (APOBEC3) family members. Expression of RTF1, RNA polymerase II-associated factor 1 (PAF1), TRIM11, TRIM26, and BST-2/tetherin correlated with decreased HIV-1 infectivity. This report demonstrates synchronous effects of activation-induced antiviral genes on HIV-1 infectivity, providing candidates for pharmacological manipulation.
Nanotechnology for Sustainability in ACS Sustainable Chemistry & Engineering: Some Pointers (2021)

ADVERTISEMENT RETURN TO ISSUEEditorialNEXTNanotechnology for Sustainability in ACS Sustainable Chemistry & Engineering: Some PointersThalappil PradeepThalappil PradeepMore by Thalappil Pradeephttps://orcid.org/0000-0003-3174-534X, Zhenxing LiZhenxing LiMore by Zhenxing Lihttps://orcid.org/0000-0002-4020-7490, and Rafael LuqueRafael LuqueMore by Rafael Luquehttps://orcid.org/0000-0003-4190-1916Cite this: ACS Sustainable Chem. Eng. 2021, 9, 43, 14327–14329Publication Date (Web):November 1, 2021Publication History Received14 October 2021Published online1 November 2021Published inissue 1 November 2021https://pubs.acs.org/doi/10.1021/acssuschemeng.1c07031https://doi.org/10.1021/acssuschemeng.1c07031editorialACS PublicationsCopyright © Published 2021 by American Chemical Society. This publication is available under these Terms of Use. Request reuse permissions This publication is free to access through this site. Learn MoreArticle Views1443Altmetric-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 PDF (605 KB) Get e-AlertscloseSUBJECTS:Green chemistry,Nanomaterials,Nanoparticles,Nanotechnology,Sustainability Get e-Alerts
Cascading One-Pot Synthesis of Biodegradable Uronic Acid-Based Surfactants from Oligoalginates, Semi-Refined Alginates, and Crude Brown Seaweeds (2023)

The present article describes a one-pot and cascade mode process using biocompatible/biodegradable reagents, for simply obtaining surfactant compositions comprising mixtures of d-mannuronic acid and l-guluronic acid directly from oligoalginates or semi-refined alginates (mixtures of alginate, cellulose, hemicellulose, laminaran, and fucan). Simple treatments of partial purification of the reaction crudes (elimination of the salts and/or the residual fatty alcohols) or isolation of the surfactant compositions result in sugar-based compounds having performance levels appropriate to applications in detergency. In addition, the challenging extension of this cascading one-pot synthesis technology to crude milled brown seaweeds was successfully carried out to provide promising surface-active compositions made up of alkyl uronate and alkyl glycoside monosaccharides.
Cyanelle DNA from Cyanophora paradoxa exists in two forms due to intramolecular recombination (1982)

The DNA of cyanelles which are described as endosymbiotic cyanobacteria from Cyanophora paradoxa (strain LB555UTEX) is equivalent to 127 kilobasepairs. It is characterized by two inverted repeat segments, 10 kilobasepairs in size, which are separated from each other by long single‐copy DNA segments of unequal size. This morphology of the chromosome is also found in the chloroplast DNA of most higher plants and some green algae. The cyanelle DNA exists in two forms of circular molecules which differ only in the orientation of the two single‐copy DNA segments relative to each other. This is likely due to intramolecular recombination within the inverted repeat segments.
Distributed AI and security issues in federated environments (2018)

Many real-world IoT solutions have to be implemented in a federated environment, which are environments where many different administrative organizations are involved in different parts of the solution. Smarter Cities, Federated Governance, International Trade and Military Coalition Operations are examples of federated environments. As end devices become more capable and intelligent, learning from their environment, and adapting on their own, they expose new types of security vulnerabilities and present an increased attack surface. A distributed AI approach can help mitigate many of the security problems that one may encounter in such federated environments. In this paper, we outline some of the scenarios in which we need to rethink security issues as devices become more intelligent, and discuss how distributed AI techniques can be used to reduce the security exposures in such environments.