gebhart/patrepeval huggingface dataset:
Deep Learning-based Moiré Pattern Removal from a Single Image: A Survey and Comparative Study (2020)

Moiré pattern in a single image is common in image visual quality degradation induced by frequency aliasing between cameras and monitors when taking a screen-shot photo. It is mainly resulted from the interference between the pixel grids of the camera sensor and the device screen. However, removal of the Moiré patterns is challenging based on the complex frequency distribution and imbalanced magnitude in color channels. Only a few studies in the literature focused on the solution of Moiré pattern removal from a single image. Traditional studies usually treated the problem as an image denoising problem and applied some filtering or signal decomposition operations based on some image priors (e.g., sparsity). Relying on the rapid development of the deep learning techniques, some deep learning-based approaches of Moiré pattern removal have been presented recently. This paper presents a brief survey and comparative study for the recent deep learning-based research works on Moiré pattern removal and discusses possible further research directions.
Antigen-specific human T-cell hybridomas with helper activity. (1982)

Human T cell hybridomas were produced by fusing the hypoxanthine phosphoribosyltransferase-deficient line of the human T cell lymphoma Jurkat with a continuous line of normal human T cells specific for tetanus toxoid (TeT). The hybridomas were selected for their ability to produce interleukin 2 after exposure to TeT on semiautologous monocytes and for their ability to bind to TeT-pulsed semiautologous monocytes. These antigen-specific T hybridomas demonstrated potent helper activity for semiautologous B cells as determined by the production of high levels of anti-TeT antibody in vitro.
Experimental and numerical acoustic characterization of ultrasonically absorptive porous materials (2018)

The paper addresses the experimental and numerical acoustic characterization of ultrasonically absorptive porous materials with random microstructure such as carbon fiber reinforced carbon ceramic C/C or C/C-SiC. The present study builds upon previous efforts by the authors,&#13;\nimproving and extending the established experimental method, complemented by a numerical analysis based on linear acoustics. The latter includes a blind-hole porosity approximation, only accounting for the larger cracks in the C/C with complex acoustic impedance given by the&#13;\ninverse Helmholtz Solver approach, and a highly parametrized homogeneous acoustic Absorber model, accounting for the complete volumetric structure of the porous absorber albeit with lower fidelity. The experimental approach is complemented by high-speed Schlieren visualization and Mach-Zehnder Interferometer measurements to qualitatively and quantitatively&#13;\nassess the interaction between an ultrasonic wave packet and a porous surface. It is found that neglecting the smaller pores and only accounting for the surface porosity, as done in the blind-hole porosity approximation, leads to the underestimation of the acoustic energy absorption coefficient. Phase shifts were found to be experimentally assessable, but remain to be corroborated by a numerical analysis. The comparisons carried out in this paper will pave&#13;\nthe way for accurate determination of impedance boundary conditions to be applied in direct numerical simulations of hypersonic transition delay over C/C. The main emphasis of the paper is to assess the potential and the limitations of the experimental methods and the comparison of the experimental results to the numerically obtained absorption characteristics.
Pathogenic and Antigenic Properties of Phylogenetically Distinct Reassortant H3N2 Swine Influenza Viruses Cocirculating in the United States (2003)

Swine influenza is an acute respiratory disease caused by type A influenza viruses. Before 1998, swine influenza virus isolates in the United States were mainly of the classical H1N1 lineage. Since then, phylogenetically distinct reassortant H3N2 viruses have been identified as respiratory pathogens in pigs on U.S. farms. The H3N2 viruses presently circulating in the U.S. swine population are triple reassortants containing avian-like (PA and PB2), swine-like (M, NP, and NS), and human-like (HA, NA, and PB1) gene segments. Recent sequence data show that the triple reassortants have acquired at least three distinct H3 molecules from human influenza viruses and thus form three distinct phylogenetic clusters (I to III). In this study we analyzed the antigenic and pathogenic properties of viruses belonging to each of these clusters. Hemagglutination inhibition and neutralization assays that used hyperimmune sera obtained from caesarian-derived, colostrum-deprived pigs revealed that H3N2 cluster I and cluster III viruses share common epitopes, whereas a cluster II virus showed only limited cross-reactivity. H3N2 viruses from each of the three clusters were able to induce clinical signs of disease and associated lesions upon intratracheal inoculation into seronegative pigs. There were, however, differences in the severity of lesions between individual strains even within one antigenic cluster. A correlation between the severity of disease and pig age was observed. These data highlight the increased diversity of swine influenza viruses in the United States and would indicate that surveillance should be intensified to determine the most suitable vaccine components.
Combined Immunochemotherapy with Rituximab Improves Overall Survival in Patients with Follicular and Mantle Cell Lymphoma: Updated Meta-Analysis Results. (2006)

Abstract Background Rituximab (R) has shown impressive response and prolonged progression free survival (PFS) in patients with indolent lymphoma when combined with CHOP. Randomized phase III trials adding rituximab to a variety of different regimen confirmed this benefit in both previously treated and untreated patients with advanced indolent lymphoma. Furthermore these trials indicating a trend towards improved overall survival (OS) for a combined immunochemotherapy with R. Here we report updated results of a comprehensive systematic review in this group of patients comparing R and chemotherapy with chemotherapy alone with respect to OS, disease control, overall response (OR) and toxicity. Methods Only randomized controlled trials (RCT) comparing R-chemo with chemotherapy alone in patients with newly diagnosed or relapsed indolent lymphoma and mantle cell lymphoma (MCL) were included. Medical databases (Cochrane Library, MEDLINE, EMBASE) and conference proceedings were searched (1990–2005). We included full-text and abstract publications. Number needed to treat (NNT) were calculated to facilitate interpretation. Results We included seven eligible RCTs involving a total of 1943 patients with follicular lymphoma (FL), MCL and other indolent lymphoma. Studies were published as full text (5), and in abstract form (2). OS was statistically significant improved in the R-chemo group when compared to chemotherapy alone (HR; hazard ratio: 0,65; 95% CI 0,54 – 0,78). OR (RR; relative risk: 1.21; 95% CI 1.16–1.27) and disease control (HR: 0.62; 95% CI 0.55–0.71) were also significantly superior after R-chemo. The RR for developing fever and leukocytopenia was significantly higher with R-chemo, but not associated with an increased risk of infection. Conclusion The systematic review demonstrated improved OS, OR and disease control for patients with indolent lymphoma and in the subgroups of follicular and mantle cell lymphoma when treated with R-chemo compared to chemotherapy alone.
Dysregulation of Catalase Activity in Newborn Myocytes During Hypoxia Is Mediated by c-Abl Tyrosine Kinase (2014)

In the adult heart, catalase (CAT) activity increases appropriately with increasing levels of hydrogen peroxide, conferring cardioprotection. This mechanism is absent in the newborn for unknown reasons. In the present study, we examined how the posttranslational modification of CAT contributes to its activation during hypoxia/ischemia and the role of c-Abl tyrosine kinase in this process. Hypoxia studies were carried out using primary cardiomyocytes from adult (>8 weeks) and newborn rats. Following hypoxia, the ratio of phosphorylated to total CAT and c-Abl in isolated newborn rat myocytes did not increase and were significantly lower (1.3- and 4.2-fold, respectively; P < .05) than their adult counterparts. Similarly, there was a significant association (P < .0005) between c-Abl and CAT in adult cells following hypoxia (30.9 ± 8.2 to 70.7 ± 13.1 au) that was absent in newborn myocytes. Although ubiquitination of CAT was higher in newborns compared to adults following hypoxia, inhibition of this did not improve CAT activity. When a c-Abl activator (5-(1,3-diaryl-1H-pyrazol-4-yl)hydantoin [DPH], 200 µmol/L) was administered prior to hypoxia, not only CAT activity was significantly increased (P < .05) but also phosphorylation levels were also significantly improved (P < .01) in these newborn myocytes. Additionally, ischemia-reperfusion (IR) studies were performed using newborn (4-5 days) rabbit hearts perfused in a Langendorff method. The DPH given as an intracardiac injection into the right ventricle of newborn rabbit resulted in a significant improvement (P < .002) in the recovery of developed pressure after IR, a key indicator of cardiac function (from 74.6% ± 6.6% to 118.7% ± 10.9%). In addition, CAT activity was increased 3.92-fold (P < .02) in the same DPH-treated hearts. Addition of DPH to adult rabbits in contrast had no significant effect (from 71.3% ± 10.7% to 59.4% ± 12.1%). Therefore, in the newborn, decreased phosphorylation of CAT by c-Abl potentially mediates IR-induced dysfunction, and activation of c-Abl may be a strategy to prevent ischemic injury associated with surgical procedures.
Improved overlay metrology device correlation on 90-nm logic processes (2004)

Isolated and dense patterns were formed at process layers from gate through to back-end on wafers using a 90 nm logic device process utilizing ArF lithography under various lithography conditions. Pattern placement errors (PPE) between AIM grating and BiB marks were characterized for line widths varying from 1000nm to 140nm. As pattern size was reduced, overlay discrepancies became larger, a tendency which was confirmed by optical simulation with simple coma aberration. Furthermore, incorporating such small patterns into conventional marks resulted in significant degradation in metrology performance while performance on small pattern segmented grating marks was excellent. Finally, the data also show good correlation between the grating mark and specialized design rule feature SEM marks, with poorer correlation between conventional mark and SEM mark confirming that new grating mark significantly improves overlay metrology correlation with device patterns.
Intraurethral activation of excitatory bladder reflexes in persons with spinal cord injury (2009)

Electrical activation of an excitatory reflex between sensory fibers in the pudendal nerve and the bladder has been demonstrated in cats and is a potential means of restoring micturition function in persons with spinal cord injury. We investigated the clinical feasibility of activating this reflex to restore bladder function in persons with spinal cord injury by using intraurethral electrical stimulation to activate pudendal sensory fibers innervating the urethra. Excitatory bladder responses (contractions) were evoked by trains of electrical pulses applied to either the proximal (29.7 +/- 11.6 cmH2O) or distal (30.2 +/- 11.6 cmH2O) segment of the urethra. The results indicate that an excitatory reflex between pudendal nerve afferents and the bladder exists in humans with spinal injury and may provide a substrate for restoring micturition function.
The Revisited Frequency-Shift Method for Shear Wave Attenuation Computation and Imaging (2022)

Ultrasound (US) shear wave (SW) elastography has been widely studied and implemented on clinical systems to assess the elasticity of living organs. Imaging of SW attenuation reflecting viscous properties of tissues has received less attention. A revisited frequency shift (R-FS) method is proposed to improve the robustness of SW attenuation imaging. Performances are compared with the FS method that we originally proposed and with the two-point frequency shift (2P-FS) and attenuation measuring US SW elastography (AMUSE) methods. In the proposed R-FS method, the shape parameter of the gamma distribution fitting SW spectra is assumed to vary with distance, in contrast to FS. Second, an adaptive random sample consensus (A-RANSAC) line fitting method is used to prevent outlier attenuation values in the presence of noise. Validation was made on ten simulated phantoms with two viscosities (0.5 and 2 Pa [Formula: see text]) and different noise levels (15 to -5 dB), two experimental homogeneous gel phantoms, and six in vivo liver acquisitions on awake ducks (including three normal and three fatty duck livers). According to the conducted experiments, R-FS revealed mean reductions in coefficients of variation (CV) of 62.6% on simulations, 62.5% with phantoms, and 62.3% in vivo compared with FS. Corresponding reductions compared with 2P-FS were 45.4%, 77.1%, and 62.0%, respectively. Reductions in normalized root-mean-square errors for simulations were 63.9% and 48.7% with respect to FS and 2P-FS, respectively.
Die-level processing for 3-D monolithic integration of piezoelectric MEMS on CMOS (2017)

SMRs and FBARs allow for a wide variety of applications such as IR and mass sensors, RF filters, and signal generators. By integrating devices directly on CMOS, bonding and attachment parasitics can be eliminated, permitting the optimization of the design for each application. Using full wafers in a research environment is not cost-effective and developing a die process that allows the use of MPWs is of great benefit for research environments. In this work, we demonstrate several of the techniques that allow for 3D integration using small dies, and show the value of these techniques for piezoelectric MEMS structures.
Abstract 489: Ex vivo Porcine Coronary Artery Remodeling With Seeded Endothelial Cells (2018)

Coronary heart disease is the most common cardiovascular problem that causes 370,000 deaths in America annually. Replacing the diseased coronary artery with a conduit obtained from another part of the patients’ body is the gold standard for the current surgical interventions. The great saphenous veins are widely preferred as coronary bypass grafts since they are easy to harvest and can replace multiple arteries due to their abundance. However, the endothelial cells in saphenous vein lose their venous characteristics and cannot function properly, which causes frequent graft failure. Conversely, arterial grafts have higher patency rate due to better function of endothelium. Yet, arterial grafts are not abundantly available as saphenous veins. Tissue engineered blood vessels can potentially serve as an ample source for bypass conduits. However, small-diameter engineered vessels are also tending to fail without a healthy endothelium. Here we propose to investigate the potential of Sox17-overexpressing endothelial cells in the vessel lumens to prevent intimal hyperplasia. Sox17 expression leads to upregulation of arterial, anti-thrombotic and anti-inflammatory markers in endothelial cells. We used an ex-vivo porcine coronary artery model where we cultured the vessels in perfusion bioreactors to mimic arterial flow conditions. Our preliminary results show that the vessel wall injury, seeded endothelial cells and arterial shear acted synergistically on smooth muscle cell death in the media layer (Fig. 1). The present ex vivo vessel culture platform is a promising tool to study remodeling by isolating factors like endothelial cells, soluble and mechanical factors.
Reversible Markierung in lebenden Zellen mit retro‐konstruierten HaloTags ermöglicht hoch‐ und superauflösende Langzeitbildgebung (2023)

Abstract Selbstmarkierende Enzyme (SME) wie der HaloTag haben sich als leistungsstarke Werkzeuge in der hoch‐ und superauflösenden Fluoreszenzmikroskopie erwiesen. Neu entwickelte fluorogene SME‐Substrate ermöglichen die Bildgebung in Gegenwart von überschüssigem Farbstoff. Um diese Eigenschaft für die reversible Markierung zu nutzen, haben wir zwei Varianten von HaloTag7 mit wiederhergestellter Dehalogenase‐Aktivität entwickelt. Kinetische Studien in vitro zeigten unterschiedliche Umsatzkinetiken für reHaloTagS (≈0.006 s −1 ) und reHaloTagF (≈0.055 s −1 ). Die Bildgebung mittels konfokaler und Stimulated Emission Depletion Mikroskopie ergab eine drei‐ bis fünffach erhöhte Photostabilität der reHaloTag‐Markierung. Die Abbildung einzelner Moleküle mit reHaloTags ermöglichte eine kontrollierte und stabile Markierungsdichte über längere Zeiträume. Durch die Kombination mit strukturierter Beleuchtung wurde die gleichzeitige Visualisierung von Einzelmoleküldiffusion und organellarer Dynamik erreicht. Diese Anwendungen verdeutlichen das Potenzial der reHaloTag‐Markierung um die Grenzen fortschrittlicher Fluoreszenzmikroskopie‐techniken zu erweitern.
Model based prediction, preview and robust controls in motion control systems (2002)

This paper describes the role of mathematical models in various model-based control schemes such as predictive control and preview control. To prevent the deterioration of performance of these control approaches in the presence of model uncertainties and disturbances, model based methods for state estimation, disturbance estimation and parameter identification may be utilized to obtain robust high performance motion control system.
A new mechanism for the transition metal catalyzed copolymerization of conjugated dienes with olefins: The double coordination mechanism (1993)

Abstract We have focused our interest on the ethylene‐ butadiene copolymerizations catalyzed with Ziegler‐Natta type catalysts. The catalysts used are MgCl 2 supported titanium catalysts. The main features of these copolymerizations (stereospecificity of the butadiene enchainments, multiblock structure, gel formation) cannot be rationalized on the basis of the Cossee mechanism. We propose a new model: The double coordination mechanism. It explains all the phenomena observed. Experimental confirmations will be presented in this paper.
Preparation of c-axis oriented PbTiO3 thin films and their crystallographic, dielectric, and pyroelectric properties (1986)

Highly c-axis oriented and epitaxial PbTiO3 thin films were grown on MgO single crystals and epitaxial Pt film substrates by the rf-magnetron sputtering method. The films with a 98% c-axis orientation rate were obtained under low deposition rate (&amp;lt;20 Å/min) and low gas pressure (∼1 Pa) using a PbO-rich target. Phase transition of the PbTiO3 thin film was studied by high-temperature x-ray diffraction. It was found that the c-axis of the tetragonal phase was parallel to the substrate just below Tc and the c-axis becomes perpendicular to the substrate with lowering of temperature. These films show high resistivity (∼1010/Ω cm). It was found that significant pyroelectric currents are detected on all specimens without poling treatment. The polarization directions of the films are the same in all specimens. One of these films had a low relative dielectric constant of 97 and a high pyroelectric coefficient of 2.5×10−8 C/cm2 K without poling treatment. These films will be suitable for applications such as pyroelectric infrared detector and piezoelectric transducer.
Dynamics of Social Roles in the Context of Group Evolution in the Blogosphere (2018)

An important aspect of research carried out on social networks is the analysis of community dynamics. It can have many aspects related to size of community, existing groups and roles performed by users in them. This article focuses on the problem of studying the impact of the types of group reorganization on transitions between user roles. A set of roles has been defined and each role has been assigned to users having similar behavior, and main types of events have been identified that affect groups during their life cycle. A model for the evolution of the community has been developed. Analyzes of transitions between roles of given users as a result of individual events, which have a significant impact on the changing roles in the community by the users, have been carried out. The experiments have been performed on data from the Salon24 - Polish popular blog portal.
Design, modeling, estimation and control for aerial grasping and manipulation (2011)

This paper addresses mechanics, design, estimation and control for aerial grasping. We present the design of several light-weight, low-complexity grippers that allow quadrotors to grasp and perch on branches or beams and pick up and transport payloads. We then show how the robot can use rigid body dynamic models and sensing to verify a grasp, to estimate the the inertial parameters of the grasped object, and to adapt the controller and improve performance during flight. We present experimental results with different grippers and different payloads and show the robot's ability to estimate the mass, the location of the center of mass and the moments of inertia to improve tracking performance.
Anti-thrombotic Effects of Atorvastatin-An Effect Unrelated to Lipid Lowering (2002)

Statins (3-Hydroxy-3-methylglutaryl coenzyme A reductase inhibitors) have been shown to reduce clinical events in excess of what can be explained by altering lipid profile. Statins have been shown to possess modest antioxidant and antiplatelet aggregatory effect. We postulated that statins may accordingly inhibit arterial thrombus formation. To assess the antithrombotic effects of atorvastatin, a commonly used statin, in response to an oxidant stimulus, we fed Sprague-Dawley rats either regular chow, or chow mixed with atorvastatin (1.25 mg/kg) for 10 days (n = 16 in each group). Eight rats in each group were also given oxidized low-density lipoprotein intravenously prior to the induction of thrombus. An occlusive thrombus was created in the abdominal aorta by application of Whatman paper soaked in 35% FeCl3. The time to occlusive thrombus formation was not altered by administration of oxidized low-density lipoprotein in the rats fed regular chow or chow mixed with atorvastatin. However, time to thrombosis was increased in the group given chow mixed with atorvastatin (26 +/- 4 minutes vs. 20 +/- 5 minutes, P < 0.02). To determine the mechanism of atorvastatin's antithrombotic effect, we measured the expression of endothelial constitutive nitric oxide synthase (cNOS) in rat aortas by Western analysis. The cNOS protein expression was enhanced 75% in rats fed chow with atorvastatin (P < 0.01 vs. rats fed regular chow). Plasma levels of total cholesterol and low-density lipoprotein-cholesterol were similar in all groups. This study shows that atorvastatin delays thrombus formation in arterial channels exposed to oxidant stress. This effect of atorvastatin appears to be related to increased expression of cNOS, which is known to inhibit platelet aggregation and induce vasodilatation. The effects of atorvastatin are independent of its effects on plasma cholesterol levels.