gebhart/patrepeval huggingface dataset:
A Simple, Linearized, Phase-Modulated Analog Optical Transmission System (2007)

We describe and experimentally demonstrate a new technique to suppress third-order intermodulation distortion (IMD) in a coherent phase-modulated RF optical link. The anisotropic electrooptic coefficient of lithium niobate is exploited to simultaneously modulate orthogonally polarized fields. These fields are then combined to eliminate the third-order distortion. This technique uses a single phase modulator, requiring no external bias or control, for a highly linear photonic microwave relay. The resulting suboctave dynamic range is limited by fifth-order IMD instead of third-order IMD
The tribological properties and action mechanism of Schiff base as a lubricating oil additive (1995)

Abstract In this paper, an organic compound containing a nitrogen element, Schiff base, is synthesised, and its tribological characteristics are evaluated by four‐ball and Timken machines. Schiff base possesses friction‐reducing and antiwear properties, especially under low load. Results from X‐ray photoelectron spectroscopy (XPS) reveal that the binding energy of N 1s increases in the boundary film. Differential thermal analyses (DTA) indicate that Schiff base reacts with iron powder, forming complex compounds through hydroxy and azomethine. An action mechanism, with surface‐complex compound films being formed on the surface, is proposed.
Factors controlling the expression of mouse mammary tumour virus (1992)

Research Article| May 01 1992 Factors controlling the expression of mouse mammary tumour virus W H Günzburg; W H Günzburg 1GSF-Forschungszentrum für Umwelt und Gesundheit GmbH, Institut für Molekulare Virologie, D-8042 Neuherberg Search for other works by this author on: This Site PubMed Google Scholar B Salmons B Salmons *Lehrstuhl für Molekulare Tierzucht der Ludwig-Maximilians Universität, Veterinärstraße 13, D-8000 Munich, Germany Search for other works by this author on: This Site PubMed Google Scholar Biochem J (1992) 283 (3): 625–632. https://doi.org/10.1042/bj2830625 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter LinkedIn Cite Icon Cite Get Permissions Citation W H Günzburg, B Salmons; Factors controlling the expression of mouse mammary tumour virus. Biochem J 1 May 1992; 283 (3): 625–632. doi: https://doi.org/10.1042/bj2830625 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsBiochemical Journal Search Advanced Search This content is only available as a PDF. © 1992 The Biochemical Society, London1992 Article PDF first page preview Close Modal You do not currently have access to this content.
Smoke Exposure Exacerbates an Ethanol-Induced Defect in Mucociliary Clearance of Streptococcus pneumoniae (2005)

EtOH ingestion in our model facilitated movement of S. pneumoniae into rats' lungs, a phenomenon exacerbated by concurrent smoke exposure. Furthermore, the organism's movement into the lungs correlated with a blunting of the rats' ciliary response to an established stimulus. Defects in mucociliary clearance thus may be one cause of the increased risk of pneumococcal infections in people who abuse alcohol, particularly if they also smoke.
Predicting Epileptic Seizures in Scalp EEG Based on a Variational Bayesian Gaussian Mixture Model of Zero-Crossing Intervals (2013)

A novel patient-specific seizure prediction method based on the analysis of positive zero-crossing intervals in scalp electroencephalogram (EEG) is proposed. In a moving-window analysis, the histogram of these intervals for the current EEG epoch is computed, and the values corresponding to specific bins are selected as an observation. Then, the set of observations from the last 5 min is compared with two reference sets of data points (preictal and interictal) through novel measures of similarity and dissimilarity based on a variational Bayesian Gaussian mixture model of the data. A combined index is then computed and compared with a patient-specific threshold, resulting in a cumulative measure which is utilized to form an alarm sequence for each channel. Finally, this channel-based information is used to generate a seizure prediction alarm. The proposed method was evaluated using ∼ 561 h of scalp EEG including a total of 86 seizures in 20 patients. A high sensitivity of 88.34 % was achieved with a false prediction rate of 0.155 h⁻¹ and an average prediction time of 22.5 min for the test dataset. The proposed method was also tested against a Poisson-based random predictor.
Study on Non-Platinum Counter Electrode for Black-Dye-Sensitized Solar Cell (2008)

Abstract not Available.
Non-localized states and high hole mobility in amorphous germanium (2019)

Covalent amorphous semiconductors, such as amorphous silicon (a-Si) and germanium (a-Ge), are commonly believed to have localized electronic states at the top of the valence band and the bottom of the conduction band. Electrical conductivity is thought to be by the hopping mechanism through localized states. The carrier mobility of these materials is usually very low, in the order of ~10^-3 - 10^-2 cm^2/(Vs) at room temperature. In this study, we present the Hall effect characterization of a-Ge prepared by self-ion implantation of Ge ions. The a-Ge prepared by this method is highly homogenous and has a mass density within 98.5% of the crystalline Ge. The material exhibits an exceptionally high electrical conductivity and carrier mobility (~100 cm^2/(Vs)) for an amorphous semiconductor. The temperature-dependent resistivity of the material is very-well defined with two distinctive regions, extrinsic and intrinsic conductivity, as in crystalline Ge. These results are direct evidence for a largely-preserved band structure and non-localized states of the valence band in a-Ge, as proposed by Tauc et al. from optical characterization alone. This finding is not only significant for the understanding of electrical conductivity in covalent disordered semiconductors, but the exceptionally high mobility we have observed in amorphous Ge opens up device applications not previously considered for amorphous semiconductors.
Advantages of intranasal vaccination and considerations on device selection (2009)

Oral and Intramuscular vaccination has been considered till date as the ultimate ways, but nasal route offers advantages such as ease of self administration and induction of mucosal as well as systemic immunity. Both liquid and dry powder formulations can be given via intranasal route. A great consideration has to be given while selecting a suitable device for nasal administration since the volume delivered is very low. A number of devices are available based on number of doses to be administered and type of dosage formulation.
α-Galactosylceramide, a Ligand of Natural Killer T Cells, Inhibits Allergic Airway Inflammation (2005)

alpha-Galactosylceramide (alpha-GalCer) is a specific ligand of natural killer T cells (NKT cells) that regulates the immune responses such as tumor rejection and autoimmunity by producing interferon (IFN)-gamma and interleukin (IL)-4. However, it has not been determined whether alpha-GalCer-activated NKT cells modulate allergic inflammation. Because alpha-GalCer induces a large amount of IFN-gamma production by NKT cells, we hypothesized that an in vivo administration of alpha-GalCer could inhibit allergic airway inflammation in mice. Strikingly, a single intraperitoneal injection of alpha-GalCer almost completely abrogated an infiltrate with eosinophils in the lung tissue as well as in the bronchoalveolar lavage. This inhibition of allergic inflammation was associated with a significant decrease in the levels of IL-4, IL-5, and IL-13 in bronchoalveolar lavage fluid and in the number of goblet cells. In addition, this ligand significantly inhibited airway hyperresponsiveness to inhaled methacholine and raised the serum levels of ovalbumin-specific IgG2a with a decrease in those of ovalbumin-specific IgE. In IFN-gamma knockout mice, however, alpha-GalCer failed to exert such inhibitory effects in this asthma model. These results indicate that alpha-GalCer prevents allergic airway inflammation possibly through IFN-gamma production by ligand-activated NKT cells, suggesting the potential therapeutic application of alpha-GalCer in asthma.
Diagnostic Relevance of Pressure-Controlled Discography (2006)

Discogenic pain is a leading cause of chronic low back pain. The authors investigated the efficacy of pressure-controlled discography to determine its role in clinical decision-making for the management of patients with discogenic pain. Pressure-controlled discography was performed in 21 patients (51 discs) with pain-provocation, followed by post-discography computerized tomography scans. Pain response was classified as positive response and negative response, and measured with visual analog scale scores. Discographic findings were graded by the modified Dallas discogram scale. Elastance, pain provocation on intradiscal pressure, pressure and volume of initial pain response, and pain response intensity were statistically analyzed. Elastance showed significant differences between Grade 0 and Grade 4 and 5. Decreased elastance with positive pain response group was a good indicator to imply that disc degeneration presumably is a pain generator. Results of pain response were well correlated with intradiscal pressure but not with the amount of injected volume. Among 31 discs of Grade 4 and 5, 74% showed negative pain response and 26% showed positive response. It was concluded that pressure-controlled discography was useful to diagnose discogenic pain and excellent guide in decision-making for spinal operations.
Characterization of Salvia Miltiorrhiza ethanol extract as an anti-osteoporotic agent (2011)

The preventive effect of SM was presumably due to its anti-oxidative stress partly via modulation of osteoclast maturation and number. In current study, SM appears to be a promising osteoporosis therapeutic natural product.
Relationships between factor VIII:Ag and factor VIII in recombinant and plasma‐derived factor VIII concentrates (2004)

A variety of plasma-derived (pd) and recombinant (r) factor VIII (FVIII) concentrates are used to prevent and treat bleeding in severe hemophilia A patients. A significant side effect of FVIII replacement is the development of FVIII neutralizing antibodies (inhibitors) in up to 30% of patients receiving FVIII concentrates. The FVIII protein content (FVIII:Ag) per unit of FVIII:C in FVIII concentrates, and how effectively the FVIII:Ag in FVIII concentrates binds to von Willebrand factor (VWF) may provide information relevant for the survival of FVIII:C in vivo and for estimating the risk for inhibitor development. The FVIII:Ag content of nine r-FVIII and nine pd-FVIII concentrates were quantified in this study using two enzyme-linked immunosorbent assay (ELISA) platforms. The two ELISA platforms were based on the use of a monoclonal anti-(FVIII light chain)-IgG and polyclonal anti-FVIII antibodies as capture antibodies and both ELISAs were equally able to detect > or =0.005 IU of FVIII:Ag. Measured in international units, the r-FVIII concentrates contained significantly higher FVIII:Ag per unit of FVIII:C than the pd-FVIII concentrates. The VWF-binding profiles of the r-FVIII and pd-FVIII concentrates were also determined by gel filtration chromatography. Unlike the plasma-derived products, the r-FVIII concentrates invariably contained a fraction of FVIII:Ag molecules (approximately 20%) which was unable to associate with VWF. Given that VWF regulates both factor VIII proteolysis and survival of FVIII:Ag in vivo, the fraction of FVIII:Ag unable to bind to VWF may have a reduced survival and be more susceptible to proteolytic degradation in vivo. The extent to which the fractions of FVIII:Ag in concentrates able and unable to bind to VWF contribute to inhibitor development in severe FVIII-deficient patients is unknown.
Microwave, millimeter wave and sub-millimeter wave free-space Faraday rotators (2002)

We report new loss and dispersive measurements on SrM hexagonal ferrites both in sintered form and in a plastic matrix showing their potential for providing high performance, free-space Faraday Rotators over large frequency ranges. SrM polycrystalline ferrites show a strong dispersion at frequencies below 150GHz which helps to account for their wideband performance at W-band. These ferrites have the advantage that they operate in their remnant state and require no external magnetic field and can act as isolators over extremely large apertures.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Dressware: wearable piezo- and thermoresistive fabrics for ergonomics and rehabilitation (2002)

Polymeric semiconductors in the form of spun fibers and fiber coatings possess electromechanical transduction properties suitable for the implementation of smart fabrics incorporating distributed strain and temperature sensors and contractile actuators. In addition, "all-polymer" flexible devices acting as active electronic components (transistors) have been recently disclosed (F. Garnier et al., Science, vol. 265, p. 1684-6, 1994), making eventually possible the implementation of processing functions into fabric substrates. The key element to realize sensorized fabrics systems is to reach a form which allows their integration into wearable garments.
Noninvasive detection of nonsteroidal anti-inflammatory drug-induced gastropathy in dogs. (1995)

Nonsteroidal anti-inflammatory drugs (NSAID) are widely used for treatment of people and animals. Their use is limited by frequent side effects commonly involving the gastrointestinal tract, most important of which is development of ulcerating lesions principally in the stomach. Unfortunately, presence of such lesions is often unsuspected because clinical signs may be overlooked until a complication develops. We reported that such damage can be detected by measuring the increase in gastric permeability that is a hallmark of this condition. Sucrose is a novel probe molecule for determination of site-specific gastric permeability. As a disaccharide, it is large enough to be effectively excluded by the intact gastric epithelium, and because it is rapidly digested within the small intestine, absorption of the intact molecule implies damage proximal to this site. Recently, we found that increased sucrose permeability is useful in predicting presence of endoscopically relevant gastric damage in people. We extended these results to the detection of NSAID-induced gastropathy in dogs. Dogs treated with aspirin developed NSAID-induced gastropathy (including gastric ulceration), and the degree of endoscopically detectable damage correlated well with sucrose permeability. Furthermore, healing of these lesions could also be monitored by sequential measurements of sucrose permeability. Sucrose permeability decreased more rapidly than the disappearance of gastric ulcers, suggesting that this technique is more sensitive to generalized mucosal damage than is the presence of discrete, endoscopically visible ulceration. This was confirmed by creating artificial ulcers in the antrum and observing that sucrose permeability was not increased in the setting.(ABSTRACT TRUNCATED AT 250 WORDS)
Nano-watt 0.3 V supply resistorless voltage reference with Schottky diode (2016)

The analysis and design of a resistorless sub-bandgap voltage reference using Schottky diode and Low-VTo transistors is presented herein. The circuit is self-biased and works in the nano-ampere consumption range, achieving full operation at 0.3 V of supply voltage. The design is validated through post-layout simulations including process variability analysis, for a commercial 130 nm CMOS process. A voltage reference of 102.8 mV is reached under Vdd = 1.2V and 92.5 mV for VDD = 0.3V, with a temperature coefficient (TC) of 215.7 ppm/°C and 216 ppm/°C, respectively using curvature correction to improve the TC in the range from −40° C to 120° C. The current consumption is 212 nA with VDD = 1.2V at 27°C, and the chip area is 0.0068 mm2.
Associations of allelic variants of the multidrug resistance gene (ABCB1 or MDR1) and Inflammatory Bowel Disease and their effects on disease behavior: A case-control and meta-analysis study (2006)

These results indicate that ABCB1 sequence variants are associated with a small increase in the risk of developing UC and may influence disease behavior.
Shear Noise Attenuation and PZ Matching for OBN Data with a New Scheme of Complex Wavelet Transform (2013)

In processing of ocean-bottom-node (OBN) data, vertical particle velocity (Vz) data, recorded by geophones, and pressure (P) data, recorded by hydrophones, can be used conjunctively for up- and down-going wavefield separation. However, shear noise attenuation needs to occur in the Vz data before it can be matched to the P data. The noise attenuation and the matching can be achieved in one step by local attribute matching in the dual-tree complex wavelet transform (DTCWT) domain. Shear noise on Vz data can be characterized as low frequency and composed of a wide range of local dips. Conventional DTCWT does recursive band analysis only in the LL-band (low-f and low-k band). Therefore, shear noise with k in the higher half-band cannot be well-resolved in the frequency domain due to the poor frequency resolution in the LH band. As a result, the attenuation of high-k shear noise can be inadequate in conventional DTCWT domain. This paper proposes a new scheme to do 2D complex wavelet transformations that can provide adaptive angular-resolving capability for each analysis stage and thus solve the problem of poor high-k shear noise suppression with conventional 2D DTCWT.
Impaired autologous mixed lymphocyte reaction with normal concanavalin A-induced suppression in adult polymyositis/dermatomyositis. (1983)

Polymyositis/dermatomyositis (PM/DM) is an autoimmune disorder of unknown aetiology. In order to study whether immunoregulatory abnormalities might be involved in this autoimmune state, we investigated the autologous mixed lymphocyte reaction (AMLR) and concanavalin A-induced suppressor cell function (Con A-induced suppression) in adult patients with primary PM/DM. We found the AMLR to be significantly depressed in patients; responsiveness could not be enhanced by increasing the numbers of non-T stimulator cells in culture, nor by varying the day on which cultures were harvested. Con A-induced suppression of T cell proliferative responses to mitogenic stimuli was normal. These findings implicate abnormal immunoregulation in the pathophysiology of PM/DM. Further, the dissociation of AMLR reactivity from Con A-inducible suppression suggests that events important for immunoregulatory competence may occur in the AMLR culture, despite the absence of an observed proliferative response.
A Multipath Routing Mechanism in Optical Networks with Extremely High Bandwidth Requests (2009)

In this paper, we propose to apply multipath routing in optical networks for the emerging high-performance applications with extremely high bandwidth requirements, typically larger than the capacity of one wavelength. To this end, we present a novel Multipath lightpath Provisioning mechanism and derive an optimal solution by an ILP (Integer Linear Programming) approach, with differential delay and bandwidth as constraints to multipath finding. Our mechanism can set up multiple lightpaths over multiple fiber-level paths not only to satisfy the extremely high bandwidth requirements, but also to reduce the minimum bandwidth required for backup paths as it reduces the amount of traffic affected by single fiber breaks. For comparison, we also present an ILP-based Single Path Lightpath Provisioning mechanism and show that its multipath counterpart performs better independently of the mesh topology under study. The performance results demonstrate that the proposed multipath lightpath provisioning mechanism outperforms the traditional single path routing by decreased bandwidth request blocking ratio, while reducing the amount of traffic that may be affected by single link failures.
THE KINETICS OF THE REACTION OF SILICA WITH GROUP I HYDROXIDES (1961)

A method is presented for preparing a reproducible silica glass or quartz surface that does not craze during rate of solution measurements in solutions of the five group I hydroxides. For silica glass, initial rates are a maximum at 8 M for at least NaOH and KOH and are an inverse function of ion size for the five cations and tetramethyl ammonium ion. A proposed mechanism of water addition followed by reaction with hydroxyl ion is used to explain the maximum rate and the effect of solution products and the substitution of methanol for water as a solvent. For quartz an explanation is offered for the lower rate and for the absence of a maximum rate below 27 M NaOH. A common temperature coefficient of 20 kcal mole −1 is reported for all reactions in water. The crazing of finely ground or polished silica glass surfaces is related to the presence of surface cracks and their enlargement by possible conversion of some silica to quartz in NaOH solution.
A Magnifying Glass Approach to Augmented Reality Systems. (1997)

This paper proposes a novel way to realize augmented reality (AR) systems. Unlike previous AR systems, which use head-mounted or head-up displays, our approach employs a palmtop-sized video see-through device to present computer augmented view of the real world. This configuration, which we call the magnifying glass approach, has several advantages over traditional head-up or head-mounted configurations. A user doesn&apos;t have to put on any cumbersome head gear. Like a magnifying glass, the user can easily move the device around and compare real and augmented images. We have built a prototype augmented reality system called NaviCam, based on the proposed magnifying glass approach. NaviCam uses a miniature gyro sensor to determine the orientation of device. It also has a vision-based ID recognition capability to detect a rough position of the device in the real world, and real world objects in front of the device. The experiment conducted by using NaviCam shows the great potential of the v...
Jitter-based policies to improve asynchronous bandwidth exploitation in fieldbus communication systems (2002)

An important problem in time-critical process control networks is to exploit the bandwidth fully and, at the same time, try to minimize the data delivery delay and serve all the stations fairly. The problem is particularly felt in fieldbuses which have to support traffic with hard time constraints. In this paper we present and evaluate some policies which, by allowing a controlled jitter on periodic traffic, allow the performance of asynchronous traffic produced by alarm signals, processing results, human operations, etc to be improved.
Control of Intramolecular Orbital Alignment in the Photodissociation of Thiophenol: Conformational Manipulation by Chemical Substitution (2008)

Intramolekulare Orbitalausrichtungen können gesteuert werden, indem man die Anfangslage des Wellenpakets auf der zweidimensionalen Potentialenergiefläche von Thiophenol durch Feinabstimmung der Konformation verändert (siehe Bild; CI=konische Durchschneidung). para-Substituenten am Thiophenol bewirken Konformationsänderungen, die zu einer drastischen Änderung des Verzweigungsverhältnisses der X̃-und Ã-Zustände des Phenylthiylradikals führen.