gebhart/patrepeval huggingface dataset:
Incidence and oncologic outcome of renal cell carcinoma in hemodialysis patients detected by annual computed tomography (CT) screening. (2012)

426 Background: Patients with maintenance hemodialysis (HD) have been recognized as a high risk group for cancer. The aim of this study was to verify the incidence and oncological outcomes of patients on maintenance hemodialysis with renal cell carcinoma (RCC) compared with RCC patients without renal dysfunction. Methods: We have been carried out annual screening for renal mass for the hemodialysis patients.The oncological outcome of pT1N0M0 RCC detected by annual screening of CT imaging were retrospectively reviewed in 1217 patients with HD between January 2002 and December 2010 at Oyokyo kidney Research Institute and Hirosaki University Hospital, Hirosaki, Japan. Overall and cancer specific survival was compared with age matched 106 of pT1N0M0 RCC patients without renal dysfunction who performed radical nephrectomy at the same periods. Results: Among the hemodialysis patients, 14 RCCs were incidentally detected by screening CT examinations and RCC detection rate in HD patients was 0.27% per year. Total 119 pT1N0M0 RCC patients (13 with HD group, 106 normal kidney function group) were incidentally detected by regular abdominal CT imaging without symptoms. There were no significant differences on age and gender between HD and normal kidney function group. Cancer specific survival after tumor diagnosis was not different, but overall survivals were significantly superior in patients without renal dysfunction compared to those with chronic renal failure (P < 0.0001). Cancer specific and Overall 5-year survival was 95% and 96% in patients without renal dysfunction, 92% and 54% in those with chronic renal failure. Conclusions: There was no significant difference in cancer specific survival of pT1 RCC between the two groups. However, overall survival was significantly worse in HD patients. Oncological effectiveness of annual CT screening for the HD patients was not evident in the present retrospective study.
Robust predictive dual‐loop control strategy with reactive power compensation for single‐phase grid‐connected distributed generation system (2013)

A robust predictive dual‐loop control strategy with reactive power compensation is proposed for single‐phase grid‐connected distributed generation (DG) system located at the end of the feeder. The proposed control strategy mainly includes improved reactive current detection and robust predictive dual‐loop control. To reduce the long time delay in the conventional reactive current detection, the improved reactive current detection method based on the derivative and i p − i q algorithm is presented. In the inner current loop, a robust predictive deadbeat control (RPDC) is proposed to reduce the control delay in digital signal processor, and also enhances system robustness due to the filter inductance mismatch. In the outer loop, proportional–integral controller is applied to stabilise the dc‐link voltage, and power feedforward is used to speed up the system response. In z ‐domain, the stability of RPDC is discussed, and the proper parameters are selected. Simulation and experimental results verified the validity of the proposed strategy.
Controlling formations of multiple mobile robots (2002)

We investigate feedback laws used to control multiple robots moving together in a formation. We propose a method for controlling formations that uses only local sensor-based information, in a leader-follower motion. We use methods of feedback linearization to exponentially stabilize the relative distance and orientation of the follower, and show that the zero dynamics of the system are also (asymptotically) stable. We demonstrate in simulation the use of these algorithms to control six robots moving around an obstacle. These types of control laws can be used to control arbitrarily large numbers of robots moving in very general types of formations.
<title>High-resolution Ionospheric and Thermospheric Spectrograph (HITS) on the Advanced Research and Global Observing Satellite (ARGOS): quick look results</title> (1999)

The High-resolution Ionospheric and Thermospheric Spectrograph (HITS) is a very high resolution (> 0.5 angstroms resolution over the 500 - 1500 angstroms passband) Rowland circle spectrograph that is currently flying on the USAF Advanced Research and Global Observing Satellite (ARGOS, launched 23 February 1999). The ARGOS is in a sun- synchronous, near-polar orbit at 833 km altitude with an ascending node crossing time of 2:30 PM. The instrument is designed to spectrally resolve the 834 angstroms triplet to demonstrate a new technique for remotely sensing the electron density in the F-region ionosphere. In addition, the HITS can spectrally resolve the rotational structure of the N<SUB>2</SUB> Lyman-Birge-Hopfield bands, which can be used to infer the thermospheric temperature. The HITS can resolve the radiative recombination continuum produced by recombining O<SUP>+</SUP> ions and electrons, which can be used to infer the electron temperature. The HITS will also produce a high spectral resolution array of the 500 - 1000 angstroms passband to produce a more accurate identification of some of the previously unresolved features of the dayglow spectrum. The instrument operates as a limb imager with a limb scan occurring every 100 seconds throughout the expected three year mission life. Its field-of-view is 0.06 degree(s) X 4.6 degree(s), which corresponds to 3 km (altitude) X 230 km (along the horizon) at the limb. The instrument's field-of-regard is 17 degree(s) X 4.6 degree(s), which covers the 100 - 750 km altitude range. We will present an overview of the instrument and discuss its calibration and in-flight performance.
Inelastic Electron Scattering from<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">V</mml:mi></mml:mrow><mml:mrow><mml:mn>51</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math> (1962)

Shell-model predictions of the relative inelastic electron scattering cross section for excitation of the first four excited states of ${\mathrm{V}}^{51}$ are made using effective single-particle operators and the known configurations of these states. The predicted cross sections for excitation of three of these levels are compared with measured scattering cross sections determined at scattering angles less than 60\ifmmode^\circ\else\textdegree\fi{} using electrons of primary energy 183, 300, and 600 MeV.
Photoinduced χ<sup>(2)</sup> for second harmonic generation in stoichiometric silicon nitride waveguides (2017)

We present for the first time second harmonic generation in amorphous stoichiometric Si<sub>3</sub>N<sub>4</sub> waveguides grown via low pressure chemical vapor deposition. An effective second-order susceptibility (χ <sup>(2)</sup>) is established via the coherent photogalvanic effect. A waveguide was designed to phase match a horizontally (parallel to the waveguide width) polarized hybrid EH<sub>00</sub> mode at 1064 nm with the higher-order hybrid transverse EH<sub>02</sub> mode at 532 nm. A mode-locked laser delivering 6.2-ps pulses at 1064 nm with a repetition rate of 20 MHz was used as pump. When pumped with a constant average power, it was found that the photoinduced χ <sup>(2)</sup> is established over a time of the order of 1000 s in as-manufactured waveguides, during which the second harmonic signal grows from below noise to a saturation value. The life-time of the photoinduced χ <sup>(2)</sup> is at least a week. In steady state, we obtain a maximum conversion efficiency close to 0.4% for an average pump power of 13 mW inside the waveguide. The effective second-order susceptibility is found to be 8.6 pm/V.
Mechanisms of mixing and creation of structure in laminar stirred tanks (2002)

Abstract Although stirred tanks have been the most commonly used fluid mixing devices since the beginnings of the industrial era, little is known about how and why they mix, and, therefore, about how to improve their performance, particularly when operated in the laminar regime. In laminar conditions, chaos is the only route to achieve efficient mixing. From the body of research in 2‐D chaotic flows, very minute perturbations in the velocity field can lead to widespread chaos and substantial enhancement of mixing performance, but these observations have not been systematically applied to industrially relevant 3‐D flows. Using planar laser induced fluorescence and direct numerical simulations, the mechanisms of creation and evolution of mixing structures were studied in Newtonian and non‐Newtonian flows. The observed dynamical behaviors are related to geometric features of the system. In Newtonian flow systems, the passing of the impeller blades triggers the onset of chaos by introducing small perturbations to the underlying regular 2‐D flow that is observed when impellers are substituted with discs. In non‐Newtonian viscoelastic systems, nonlinearity in the stress field introduced by the fluid rheology drives the system to spontaneous chaos even when concentric discs are used to stir the fluid.
Flutter Investigation in the Transonic Range of Six Airfoils Attached to Three Freely Falling Bodies (1948)

Report presenting testing of six flutter wings, two swept 45 degrees and four unswept, attached to three freely falling bodies. Flutter frequency and phasing were recorded.
Light absorption enhancement in heterostructure organic solar cells through the integration of 1-D plasmonic gratings (2012)

The integration of a plasmonic lamellar grating in a heterostructure organic solar cell as a light trapping mechanism is investigated with numerical Finite Elements simulations. A global optimization of all the geometric parameters has been performed. The obtained wide-band enhancement in optical absorption is correlated with both the propagating and the localized plasmonic modes of the structure, which have been identified and characterized in detail.
CCDC 850695: Experimental Crystal Structure Determination (2014)

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
The tumor suppressor gene 14-3-3 sigma is commonly methylated in normal and malignant lymphoid cells. (2003)

14-3-3 sigma/Stratifin was first identified as an epithelial cell antigen (HME-1) exclusively expressed in epithelia. However, the functional role of sigma in cell proliferation and apoptosis would suggest that this protein could be relevant to the regulation of growth and differentiation of multiple cell types. Recent evidence demonstrates that sigma acts as a tumor suppressor gene that is inactivated by methylation of its 5' CpG islands in epithelial tumor cells. In normal epithelia, sigma is commonly unmethylated. The objective of this study was to determine the methylation status of sigma in lymphoid cells. We now demonstrate by methylation-specific PCR analysis that sigma is also methylated in normal and malignant lymphocytes. Such methylation, however, fails to completely silence its expression. Compared with the robust expression in epithelial cells, lymphocytes showed basal, but clearly evident, levels of sigma as determined by reverse transcription-PCR and Western blot. The finding of sigma 5' region methylation in lymphocytes has direct implications in the use of body fluids on methylation tests for noninvasive monitoring of occult epithelial tumor cells and suggests that sigma may not be an adequate biomarker for methylation-specific PCR analysis.
Failure Modes, Effects and Criticality Analysis for Wind Turbines Considering Climatic Regions and Comparing Geared and Direct Drive Wind Turbines (2018)

The wind industry is looking for ways to accurately predict reliability and availability of newly installed wind turbines. Failure modes, effects and criticality analysis (FMECA) is a technique utilized to determine the critical subsystems of wind turbines. There are several studies in the literature which have applied FMECA to wind turbines, but no studies so far have used it considering different weather conditions or climatic regions. Furthermore, different wind turbine design types have been analyzed applying FMECA either distinctively or combined, but no study so far has compared the FMECA results for geared and direct-drive wind turbines. We propose to fill these gaps by using Koppen-Geiger climatic regions and two different turbine models of direct-drive and geared-drive concepts. A case study is applied on German wind farms utilizing the Wind Measurement & Evaluation Programme (WMEP) database which contains wind turbine failure data collected between 1989 and 2008. This proposed methodology increases the accuracy of reliability and availability predictions and compares different wind turbine design types and eliminates underestimation of impacts of different weather conditions.
Handwritten Digit Recognition by Fourier-Packet Descriptors (2012)

Any statistical pattern recognition system includes a feature extraction component. For character patterns, several feature families have been tested, such as the Fourier-Wavelet Descriptors. We are proposing here a generalization of this family: the Fourier-Packet Descriptors. We have tested a set of 72 of these features on handwritten digits: the error rate was 2.44% with classifier 1NN for 19 features selected from the set and 1.72% with classifier SVM for all the set.
Effect of Chain Length Distribution on Elastomeric Properties. 2. Comparisons among Networks of Varying Degrees of Randomness (1979)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffect of Chain Length Distribution on Elastomeric Properties. 2. Comparisons among Networks of Varying Degrees of RandomnessJ. R. Falender, G. S. Y. Yeh, and J. E. MarkCite this: Macromolecules 1979, 12, 6, 1207–1209Publication Date (Print):November 1, 1979Publication History Published online1 May 2002Published inissue 1 November 1979https://pubs.acs.org/doi/10.1021/ma60072a038https://doi.org/10.1021/ma60072a038research-articleACS PublicationsRequest reuse permissionsArticle Views119Altmetric-Citations29LEARN 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
Cross-Reactivity with SIVmac in East African HIV-1-Positive Sera: Evidence against Double Infection with HIV-1 and a SIVmac/HIV-2-like Virus (1990)

IgG antibodies reactive with simian immunodeficiency virus isolated from a rhesus monkey suffering from simian acquired immunodeficiency syndrome (SIVmac, strain 239, a virus which is very closely related to human immunodeficiency virus type 2-HIV-2) were found in 18 of 120 Swedish and 8 of 11 east African confirmed HIV-1 antibody positive (HIV-1 ab+) sera, both by enzyme immunoassay and electrophoretic immunoblotting (p = 1 x 10(-6). In electrophoretic immunoblotting most of the cross-reactivity of SIVmac-reactive sera occurred on p27, the major gag protein of SIVmac. The possibility that SIVmac antibody reactivity could be due to double infection with HIV-1 and a SIVmac-related virus was eliminated by the results of absorptions between sera of Swedish and west and east African origin and viral antigens (SIVmac and North American or African/Haitian strains of HIV-1) coupled to agarose beads. HIV-2 ab+ and SIVmac reactive west African sera recognized SIVmac epitopes unrelated to HIV-1, whereas HIV-1 ab+, SIVmac reactive east African, and Swedish sera recognized SIVmac epitopes cross-reactive with epitopes present in both African and North American HIV-1 strains. No unique SIVmac-reactive African HIV-1 epitopes could thus be defined. Neither did absorption of Swedish and African HIV-1-positive sera with different HIV-1 strains (1 Haitian, 2 Zairian, and 1 North American) give evidence for unique epitopes.
An Improved Empirical Model for Describing Auto-ignition (2008)

<div class="htmlview paragraph">This paper develops an improved empirical autoignition model that includes the cool-flame phenomenon. It is calibrated for primary reference fuel (PRF) blends from 0 to 100 octane and also blends of methanol with 80 PRF. Methanol does not exhibit a cool-flame and hence the blends provide insight regarding the probable blending profile of multi-component gasolines and future synthetic fuels. The model was calibrated using ∼1500 detailed chemical kinetic simulations mapping a wide pressure, temperature and air-fuel ratio domain. Besides being a computationally elegant autoignition predictor for engine simulations, the model also provides a technically defensible structure for encapsulating experimental data from autoignition research devices such as rapid-compression machines.</div>
An attractive curriculum in power engineering (1992)

The topics discussed include undergraduate studies at Tampere University of Technology, the student preference for power engineering, post-graduate studies, continuous education, cooperation in power system engineering research, and future plans. At present Tampere University educates approximately one-half of the diploma engineers majoring in power engineering in Finland. This popularity is due to the well-planned basic course, close contacts to utilities and industries, interesting research areas, comparatively modern laboratories, and young teachers.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Improved regression models for ventilation estimation based on chest and abdomen movements (2011)

Non-invasive estimation of minute ventilation is important for quantifying the intensity of physical activity of individuals. In this paper, several improved regression models are presented, based on the measurement of chest and abdomen movements from sensor belts worn by subjects (n = 50) engaged in 14 types of physical activity. Five linear models involving a combination of 11 features were developed, and the effects of different model training approaches and window sizes for computing the features were investigated. The performance of the models was evaluated using experimental data collected during the physical activity protocol. The predicted minute ventilation was compared to the criterion ventilation measured using a bidirectional digital volume transducer housed in a respiratory gas exchange system. The results indicate that the inclusion of breathing frequency and the use of percentile points instead of interdecile ranges over a 60 s window size reduced error by about 43%, when applied to the classical two-degrees-of-freedom model. The mean percentage error of the minute ventilation estimated for all the activities was below 7.5%, verifying reasonably good performance of the models and the applicability of the wearable sensing system for minute ventilation estimation during physical activity.
Naturally Occurring Class A ß-Lactamases from the <i>Burkholderia cepacia</i> Complex (2008)

Chromosomally encoded ss-lactamases from the Burkholderia cepacia complex species (formerly Pseudomonas cepacia) were characterized. Cloning and sequencing identified an Ambler class A ss-lactamase (PenB) from B. cenocepacia. It shares 82% amino acid identity with the PenA ss-lactamases previously identified from B. multivorans 249. Its expression was dependent upon a LysR-type regulatory protein. Its narrow-spectrum hydrolysis activity mostly included penicillins but also included expanded-spectrum cephalosporins and aztreonam at lower levels. In that study, Pen-like ss-lactamases (PenC, PenD, PenE, PenF) that shared 63 to 92% identity with PenB from B. cenocepacia were identified from other Burkholderia species. The corresponding ss-lactamase genes might be used as genetic tools for accurate Burkholderia species identification.
Wind turbine control (2020)

In the last decades, tremendous efforts have been put in advancements of wind turbine technology by scientific research and industrial developments. One of the focal areas has been the upscaling of turbines to increase power capacity. However, by enlarging turbine sizes, the square-cube law dictates rising costs per unit of power capacity. To break this trend of increased expenses, more advanced control techniques are key in facilitating load reductions and system level advances. The synthesis of novel controller designs, and advancements of existing strategies, are in this thesis effectuated by leveraging well-established control theory. This method resulted in analysis tools, that gave rise to practical applicable implementations, of which some are evaluated on real-world setups. The employed approach has thereby shown to stimulate further advancements of wind turbine technology...
Forward-model-based control system for robot manipulators (2004)

Although numerous sophisticated nonlinear control algorithms exist in literature, it is still state of the art to use simple linear joint controllers in industrial robotic systems. Most nonlinear concepts are based on a more or less accurate inverse model of the robot. In this paper a forward-model-based control system, the so-called Model Following Control (MFC), for robot manipulators is presented. Its theoretical basics and its concept are explained. The quality and the applicability of the MFC control concept has been analyzed in many experiments. The MFC system is compared with classical linear controllers and nonlinear feedforward controllers with respect to robustness. Qualitative as well as quantitative results are presented and discussed.
Crystallization in Natural Rubber. II. The Influence of Impurities (1955)

Abstract Experiments are described in which the effect of the presence of foreign substances on the rate of crystallization of natural rubber at −26° C is examined. It is shown that small amounts of suitable impurities, some of which are present in smoked sheet and other plantation rubbers, accelerate the crystallization process markedly at this temperature, presumably by promoting crystal nucleation.
Effects of chromium picolinate on reproduction and farrowing performance of parity one sows (1999)

We examined the influence ofchromium picolinate fed to gilts during the growing phase from 50 Ib through their first farrowing on reproductive and farrowing performance. No differences were detected in first service farrowing rate or total or live born litter size. These datafail to support a positive influence of chromium picolinate fed during development and gestation on reproductive and farrowing performance ofparity 1 sows.; Swine Day, Manhattan, KS, November 18, 1999