gebhart/patrepeval huggingface dataset:
Nicergoline in Mild to Moderate Dementia (1989)

In view of some controversies still existing about the real efficacy of ergot derivatives in the management of dementia, a double‐blind, randomized, parallel group trial extending up to 6 months was carried out to compare the effects of nicergoline, 60 mg daily, and placebo in 315 patients suffering from mild to moderate dementia. Clinical evaluation was performed by the SCAG scale. The trial, which included a 1‐month placebo run‐in period, showed that both placebo and nicergoline were associated with some degree of improvement. The effect of nicergoline, however, was significantly greater and more sustained, steadily increasing with time. In particular, the difference between nicergoline and placebo in mean total SCAG score was 5.5 at 3 months (95% confidence interval: 3.6–7.4) and increased to 9.8 at 6 months (95% confidence interval: 7.8–11.8). A comparison of nicergoline versus placebo in the frequencies of changes in each item of the SCAG showed also a significant difference at 6 months, the percent of patients displaying an improvement by at least 2 points ranging from 13.5 (bothersome) to 30.2 (disorientation) in nicergoline group, against 4.1 (self‐care) to 14.3 (fatigue) in placebo group. The safety of nicergoline, as judged by hemodynamic changes and drug‐related adverse reactions, was quite satisfactory.
Modeling and Fault Diagnosis of Automotive Lead-Acid Batteries (2006)

In a bid to perform model-based diagnostics on the electrical network of an automobile, experimental work and analysis was conducted to model an automotive lead-acid battery over the domain in which one is expected to operate. First, a thorough literature review discusses past attempts at modeling, as well as state and parameter estimation. Also, the literature on the aging and failure modes of batteries is presented. Next, the model selected is described, consisting of a locally linear time-invariant system approximation of a globally nonlinear time-variant battery. To obtain the parameters best enabling this approximation, a series of experiments were performed on a battery, the methodologies of which are detailed. Finally, the details of parameter extraction are also presented, along with their results.
Calibration of fisheye lenses by inversion of area projections (1986)

Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text Thomas J. Herbert, "Calibration of fisheye lenses by inversion of area projections," Appl. Opt. 25, 1875-1876 (1986) Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
Wavelet transform-based correlator for the recognition of rotationally distorted images (1995)

A novel wavelet-based joint transform correlator (WJTC) for rotation-invariant pattern recognition and applications in optical image processing and remote sensing is investigated. First an optimal set of filter parameters and a mother wavelet filter are selected. These are used to extract features at different resolution from a set of rotationally distorted training images. Then a composite reference feature is formulated from these features for use in the WJTC. Simulation results for both noisy and noiseless environments are presented to verify the effectiveness of this technique.
Modeling and Control of VSC-HVDC Links Connected to Weak AC Systems (2010)

For high-voltage direct-current (HVDC) transmission, the strength of the ac system is important for normal operation. An ac system can be considered as weak either because its impedance is high or its inertia is low. A typical high-impedance systemis when an HVDC link is terminated at a weak point of a large ac system where the short-circuit capacity of the ac system is low. Low-inertia systems are considered to have limited number of rotating machines, or no machines at all. Examples of such applications can be found when an HVDC link is powering an isand system, or if it is connected to a wind farm. One of the advantages of applying a voltage-source converter (VSC) based HVDC systemis its potential to be connected to very weak ac systems where the conventional linecommutated converter (LCC) based HVDC system has difficulties. In this thesis, the modeling and control issues for VSC-HVDC links connected to weak ac systems are investigated. In order to fully utilize the potential of the VSC-HVDC system for weak-ac-system connections, a novel control method, i.e., powersynchronization control, is proposed. By using power-synchronization control, the VSC resembles the dynamic behavior of a synchronous machine. Several additional functions, such as high-pass current control, current limitation, etc. are proposed to deal with issues during operation. For modeling of ac/dc systems, the Jacobian transfer matrix is proposed as a unified modeling approach. With the ac Jacobian transfer matrix concept, a synchronous ac system is viewed upon as one multivariable feedback system. In the thesis, it is shown that the transmission zeros and poles of the Jacobian transfer matrix are closely related to several power-system stability phenomena. The similar modeling concept is extended to model a dc system with multiple VSCs. It is mathematically proven that the dc system is an inherently unstable process, which requires feedback controllers to be stabilized. For VSC-HVDC links using power-synchronization control, the short-circuit ratio (SCR) of the ac system is no longer a limiting factor, but rather the load angles. The righthalf plane (RHP) transmission zero of the ac Jacobian transfer matrix moves closer to the origin with larger load angles, which imposes a fundamental limitation on the achievable bandwidth of the VSC. As an example, it is shown that a VSC-HVDC link using powersynchronization control enables a power transmission of 0.86 p.u. from a system with an SCR of 1.2 to a system with an SCR of 1.0. For low-inertia systemconnections, simulation studies show that power-synchronization control is flexible for various operation modes related to island operation and handles the mode shifts seamlessly.
Selective cyclooxygenase-2 inhibition directly increases human vascular reactivity to norepinephrine during acute inflammation (2008)

These observations suggest that the inhibition of COX-2 directly potentiates the human vascular tone induced by NE under inflammatory conditions.
Homelessness and student learning (2009)

As increased foreclosure creates more homelessness and children change schools frequently, learning suffers. The author surveys the research and makes a case for urgent action.
Ion charge neutralization effects in scanning electron microscopes. (1980)

The use of low energy ion charge neutralization to stabilize surface potentials in scanning microscopes leads to the observation of new effects. Among the most important of these, are effects which result from the primary beam being scanned in a raster. A new theory which describes raster charge-up for highly insulating specimens is presented. It is shown that the required neutralizing ion current is a surprisingly strong function of the primary electron current, the raster parameters, specimen parameters, and magnification. Contrary to intuition, the required ion current is not linearly related to the primary electron current. Methods of adjusting parameters to achieve better ion charge neutralization are discussed.
CD23(FcεRII) Expression on Splenic B Cells in<i>Paragonimus Westermani</i>-infected Mice (1996)

Object Elevation of serum lgE is the most characteristic immune response in helminthic infections. Recently, expression of CD23(FcεRII on B lymphocytes play a major role in lgE production in allergic diseases. However, the mechanisms causing increased lgE production during helminthic infections are poorly understood. In the present study, the expression of CD 23 on splenic B lymphocytes during the course of infection with Paragonimus westermani was examined. Methods Female, 4-6-week old BALB/c mice were inoculated orally with 20 metacercariae of P. westermani. For detection of CD23 positive B lymphocytes by flow cytometry, splenocytes from infected mice and non-infected age matched controls were stained with FITC-conjugatedrat anti-mouse DB23 and PE-conjugated rat anti-mouse CD45R/B220 mono-clonal antibody. And also, to observe the effect of metacercarial ESP on the expression of CD23 antigen, splenocytes from non-infected mice were incubated in the presence of ESP at 37℃ for 6 h and 24 h. Results The frequency of CD23 positive B lymphocytes of infected mice was increased significantly(p<0.05) at two and three weeks after infection(43.4±7.52% and 44.4±2.99%, respectively) and persisted the higher levels at four and six weeks after infection. Expression of CD23 antigen of cultured splenocytes from non-infected mice in the presence of metacercarial ESP was increased significantly(p<0.05) at 24 h after incubation(60.1±7.54%). Conclusion These results suggest that the expression of CD23 antigen induced by metacercarial ESP might play a important role in serum lgE production in mice infected with P. westermani.
Information visualization of the stock market ticks : toward a new trading interface (2003)

Thesis (S.M.)--Massachusetts Institute of Technology, Sloan School of Management, February 2004.
Robust Direct Bandgap Characteristics of One- and Two-Dimensional ReS2 (2015)

Two-dimensional (2D) transition-metal dichalcogenides (TMDs), most notably, MoS2 and WS2, have attracted significant attention due to their sizable and direct bandgap characteristics. Although several interesting MoS2 and WS2-based optoelectronic devices have been reported, their processability and reproducibility are limited since their electrical properties are strongly dependent of the number of layers, strain and sample sizes. It is highly desirable to have a robust direct bandgap TMD, which is insensitive to those factors. In this work, using density functional theory, we explore the effects of layer number, strain and ribbon width on the electronic properties of ReS2, a new member in the TMD family. The calculation results reveal that for monolayer ReS2, the nature (direct versus indirect) and magnitude of its bandgap are insensitive to strain. Importantly, the predicted bandgap and also charge carrier mobilities are nearly independent of the number of layers. In addition, the direct bandgap of ReS2 nanoribbons is only weakly dependent on their width. These robust characteristics strongly suggest that ReS2 has great potential for applications in optoelectronic nanodevices.
THE REARRANGEMENT OF THE ISOMERIC 1,2-DIMETHYLAMINOCHLOROPROPANES. THE SYNTHESIS OF AMIDONE (1947)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTHE REARRANGEMENT OF THE ISOMERIC 1,2-DIMETHYLAMINOCHLOROPROPANES. THE SYNTHESIS OF AMIDONEWallace R. Brode and Max W. HillCite this: J. Am. Chem. Soc. 1947, 69, 3, 724Publication Date (Print):March 1, 1947Publication History Published online1 May 2002Published inissue 1 March 1947https://pubs.acs.org/doi/10.1021/ja01195a519https://doi.org/10.1021/ja01195a519research-articleACS PublicationsRequest reuse permissionsArticle Views146Altmetric-Citations13LEARN 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
Enantioselective Formation of All-Carbon Quaternary Centers via C–H Functionalization of Methanol: Iridium-Catalyzed Diene Hydrohydroxymethylation (2016)

The first catalytic enantioselective C-C couplings of methanol (>30 × 10<sup>6</sup> tons/year) are reported. Insertion of 2-substituted dienes into the methanol C-H bond occurs in a regioselective manner to form all-carbon quaternary centers with excellent levels of enantioselectivity using an iridium-PhanePhos catalyst. Mechanistic studies corroborate a Curtin-Hammett scenario in which methanol dehydrogenation triggers rapid, reversible diene hydrometalation en route to regioisomeric allyliridium-formaldehyde pairs, yet single constitutional isomers are formed.
Current Approaches to Histocompatibility Testing a Short Overview (1997)

(1997). Current Approaches to Histocompatibility Testing a Short Overview. Acta Clinica Belgica: Vol. 52, No. 2, pp. 92-98.
High order Bragg grating microfluidic dye laser (2004)

We demonstrate a single mode distributed feedback liquid dye laser, based on a short 133 'rd order Bragg grating defined in a single polymer layer between two glass substrates.
High-capacity upgrade of a PON by means of wavelength-routers and WDM techniques (1997)

A concept for an all-optical wavelength division multiplexing (WDM) overlay on a passive optical network (PON) and its experimental verification is presented. The WDM overlay at 1.5 /spl mu/m is realised leaving the outside fibre plant and the operation of the existing PON at 1.3 /spl mu/m unaltered. Arrayed waveguide gratings (AWG) are used to establish a point to point connectivity via individual wavelength paths between central office (CO) and each optical network unit (ONU). To keep the remote node (RN) totally passive the AWG at the RN can be monitored from the central office.
AN EXPERIMENTAL ELECTRONIC STETHOSCOPE FOR AIRCRAFT USE. (1967)

An experimental electronic stethoscope for use aboard aeromedical evacuation flights and on flight lines was developed. Preliminary evaluation has indicated that such an instrument is both feasible and useful aboard aeromedical-evacuation aircraft and in patient staging areas on the flight line. Utilization of a noise-shielded pickup and earphones mounted in a noise-protection earmuff, plus the use of appropriate filter circuits, substantially excludes environmental noise while enhancing the audibility of desired sounds. (Author)
Overexpression of <i>ATG8</i> in Arabidopsis Stimulates Autophagic Activity and Increases Nitrogen Remobilization Efficiency and Grain Filling (2018)

Autophagy knock-out mutants in maize and in Arabidopsis are impaired in nitrogen (N) recycling and exhibit reduced levels of N remobilization to their seeds. It is thus impoortant to determine whether higher autophagy activity could, conversely, improve N remobilization efficiency and seed protein content, and under what circumstances. As the autophagy machinery involves many genes amongst which 18 are important for the core machinery, the choice of which AUTOPHAGY (ATG) gene to manipulate to increase autophagy was examined. We choose ATG8 overexpression since it has been shown that this gene could increase autophagosome size and autophagic activity in yeast. The results we report here are original as they show for the first time that increasing ATG8 gene expression in plants increases autophagosome number and promotes autophagy activity. More importantly, our data demonstrate that, when cultivated under full nitrate conditions, known to repress N remobilization due to sufficient N uptake from the soil, N remobilization efficiency can nevertheless be sharply and significantly increased by overexpressing ATG8 genomic sequences under the control of the ubiquitin promoter. We show that overexpressors have improved seed N% and at the same time reduced N waste in their dry remains. In addition, we show that overexpressing ATG8 does not modify vegetative biomass or harvest index, and thus does not affect plant development.
EUV and Soft X-Ray Quantum Efficiency Measurements of a Thinned Back-Illuminated CMOS Active Pixel Sensor (2011)

We report the first absolute effective quantum efficiency (e-h pairs collected/predicted) measurements of a monolithic thinned back-illuminated CMOS active pixel sensor (APS) in the extreme ultraviolet and soft X-ray region (13-600 Å). The sensor was designed and fabricated under a joint Rutherford Appleton Laboratory/e2v research program and characterized in the Lockheed Martin Solar and Astrophysics calibration facility. We compare our QE results to the data and models developed for thinned CCDs with similar back surface passivation. Our results demonstrate that CMOS APS arrays show significant promise for use in space-based solar physics and astrophysics missions.
Sensorless Control of Permanent Magnet Generator in Wind Turbine Application (2006)

This paper discusses a new and simple speed estimator, to be used by a permanent magnet generator, for maximum power tracking in a small size variable speed wind turbine. Moreover, a vector control approach is introduced to control the output voltage and current of a single-phase voltage source inverter, such that the active and reactive power can be controlled independently. Using the proposed speed estimator, system only needs two measurements to estimate the generator speed and implement the maximum power-tracking algorithm. Accuracy of the speed estimator is verified by simulation and experimental results
The Skin They Were In: Leather and Tanning in Antiquity (2015)

As the prehistoric human creature expanded geographically toward more extreme climates, early man began to use the pelts of other animals for clothing or shelter and for protection from the elements or other physical dangers. With further technological development, skins and hides found additional uses as shoes, writing material, armor, or other equipment such as livestock harnesses. In order for this to be practical, means of retarding or preventing the rapid decomposition of the hide material was necessary. A variety of treatment processes were developed, with many of them also altering the physical properties of the hides, rendering the leather material harder, stiffer, or more durable than the original hides. The treatment methods available to early tanners will be discussed, including archaeological evidence of these methods and discussion of the chemical changes that occur during these tanning processes.
Metal–Organic CVD of Tantalum Oxide from tert-Butylimidotris(diethylamido)tantalum and Oxygen (2000)

Communication: Tantalum oxide is a high dielectric material suitable for DRAM applications. CVD results using tert-butylimidotris(diethylamido)tantalum precursor are encouraging. AFM (see Figure), XRD, XPS, and Auger indicate that, on annealing, the deposited films crystallize to β-Ta2O5 with uniform Ta and O distribution. Metal oxide semiconductor (MOS) capacitors fabricated from these films are also evaluated.
Branched trichain sulfosuccinates as novel water in CO2 dispersants (2006)

A series of highly branched trichain sulfosuccinate surfactants have been synthesized and studied in condensed CO<sub>2</sub> and aqueous environments. Aqueous critical micelle concentrations (CMCs) showed a general trend of increasing CMC with decreasing chain length, whereas increased branching appeared to increase solubility in CO<sub>2</sub> and aid the dispersion of water. Near infrared spectra confirmed observed cloud with a large increase in solubility above the cloud pressures in this solvent.
The meaning of good sleep: a longitudinal study of polysomnography and subjective sleep quality (1994)

The present study sought to investigate the meaning of subjectively good sleep, using a longitudinal and intraindividual design. Eight subjects slept in an isolation unit according to an irregular schedule of 6 h sleeps and 1 h naps, designed to give normal amounts of time in bed (1/3 of total), but variable sleep quality. Eight sleeps and eight naps were used for longitudinal simple and multiple regression analyses with standard polysomnographical sleep variables as predictors and subjective sleep quality as dependent variables. The results showed that subjective sleep quality (and related variables) was closely related to sleep efficiency, but not sleep stages. At least 87% efficiency was required for ratings of 'rather good' sleep. In addition, sleep quality ratings improved with closeness (of the awakening) to the circadian acrophase (17.00-21.00 hours) of the rectal temperature rhythm. The subjective ease of awakening differed from most other other variables in that it was related to low sleep efficiency. Objective and subjective homologues of sleep length and sleep latency showed high mean intraindividual correlations (r = 0.55 and 0.64, respectively). It was concluded that objective measures of sleep continuity were closely reflected in perceived sleep quality and that sleep quality essentially means sleep continuity.
Herpes simplex virus glycoproteins gB and gD and their role in virus penetration. (1988)

Previously, monoclonal antibodies (MAb's) and MAb resistant (mar) mutants were used to define 5 antigenic sites on herpes simplex virus type 1 (HSV-1) glycoprotein B (gB) and 4 on glycoprotein D (gD). Here, the use of these reagents in the study of HSV-1 penetration is described. MAb's specific for gB and gD were shown to neutralize virus by preventing penetration of cell surface membranes. In addition, antibodies reduced the rate of virus penetration and cell-to-cell spread. For gB, these effects were shown to be associated with MAb's specific for sites I, III, and IV whereas no correlation with a particular epitope or epitopes was seen with gD-specific MAb's. Antigenic variation in site II of gB caused altered penetration kinetics and double mar mutants affected in both site II and III showed impaired gB processing, cell surface transport of gB, and production of virus particles with reduced infectivity at high temperature (39$\sp\circ$C). In addition, sites II and III were lost in defective gB molecules produced by other temperature sensitive mutants grown at 39$\sp\circ$C. Immunoprecipitation of lethal gB insertion mutants showed that sites II and III were affected by small additions (2 to 28 residues) throughout the external domain of gB, suggesting that MAb's specific for these sites recognized a tertiary structure that is required for the maintenance of glycoprotein function. Immunoprecipitation of truncated gB polypeptides indicated that sites I, III, and IV were located in the first 441 amino acids of gB while recognition of site II involved residues closer to the transmembrane domain (596-737). Sequence analysis of gB mar mutant genes showed single amino acid changes near the predicted recognition sites. Furthermore, mar mutations which caused alterations in the synthesis and function of gB were located near where mutations causing similar defects have been found. These data suggested that different regions of HSV-1 gB contain structures that possess distinct functional characteristics.