gebhart/patrepeval huggingface dataset:
Evidence of a leading role for VEGF in<i>Bartonella henselae</i>-induced endothelial cell proliferations (2001)

Bartonella henselae causes the vasculoproliferative disorders bacillary angiomatosis (BA) and bacillary peliosis (BP). The pathomechanisms of these tumorous proliferations are unknown. Our results suggest a novel bacterial two-step pathogenicity strategy, in which the pathogen triggers growth factor production for subsequent proliferation of its own host cells. In fact, B. henselae induces host cell production of the angiogenic factor vascular endothelial growth factor (VEGF), leading to proliferation of endothelial cells. The presence of B. henselae pili was associated with host cell VEGF production, as a Pil- mutant of B. henselae was unable to induce VEGF production. In turn, VEGF-stimulated endothelial cells promoted the growth of B. henselae. Immunohistochemistry for VEGF in specimens from patients with BA or BP revealed increased VEGF expression in vivo. These findings suggest a novel bacteria-dependent mechanism of tumour growth.
EUV scattering from CNT pellicles: measurement and control (2021)

EUV lithography is introduced in semiconductor fabrication processes, which makes maximizing yield and throughput increasingly important. One key component is the use of a high-transmission pellicle to keep particles out of the focal plane and thereby minimize their impact on imaging. Imec initiated the development of a promising pellicle approach based on a network of carbon nanotubes (CNT), which has the advantage of many tunable structural parameters to form a pellicle membrane. A balance between membrane robustness and particle non-permeability on one side and low EUV absorption and membrane scattering on the other, must be found. The membrane scatter is important for EUV flare effects during wafer printing. Therefore, it is important to verify its magnitude experimentally as a function of the tunable CNT structural parameters. However, this measurement can be very challenging for low-flare requirements. In this work, the EUV scatter measurements on CNT-based pellicle membranes have been performed and optimized in a stand-alone irradiation setup at RWTH Aachen University. Membranes with different CNT structures and network parameters are investigated, as well as membranes with protective coatings. These measurements, in combination with scattering calculations and printing performance, can serve as a guideline on acceptable scattering levels for industrial applications.
Instant Neural Radiance Fields (2022)

We extend our instant NeRF implementation [Müller et al. 2022] to allow training from an incremental stream of images and camera poses, provided by a realtime Simultaneous Localization And Mapping (SLAM) system. Camera poses are refined end-to-end by back-propagating the gradients from NeRF training. Reconstruction quality is further improved by compensating for various camera properties, such as rolling shutter, non-linear lens distortion, and variable exposure typical of digital cameras.
Highly conjugated organic polymers as heterogenous catalysts (II): The interaction of nitrogen monoxide and pyrolysed polyacrylonitrile (1980)

Abstract The interaction of nitrogen monoxide (nitric oxide, NO) with pyrolysed polyacrylonitrile (PANP) has been examined together with the feasibility of the use of PANP based catalysts for the removal of small quantities of NO from the exhaust systems of internal combustion engines. Kinetic studies indicated that PANP was capable of interacting with and removing NO from an inert carrier gas and that the initial specificity of this interaction was little affected by hydrogen, hydrocarbons, carbon monixide or oxygen, the initial rates of removal being appreciably higher than those obtainable with conventional inorganic catalysts or graphitised carbon. The activation energy and kinetic features of the reaction suggested that the interaction involved the odd electron nature of NO and the free spin generated at the polymer surface. Once adsorbed the nitric oxide decomposes to form dinitrogen oxide (N 2 O) which is further reduced to nitrogen with concurrent assimilation and rearrangement of oxygen within the polymer structure. As a result the PANP gradually loses its capacity to adsorb and decompose NO. In addition, it appears that the structural features which promote the oxidative instability of PANP also govern its NO removal ability. Consequently, the lifetime and therefore practical utility of these systems is governed by the limits of oxidative stability and catalytic capacity.
Dual Fumigant and Herbicide Use Optimizes Replanting Preparation in a Virus- and Nematode-Affected Vineyard (2017)

<h3>Summary</h3> <h3>Goal:</h3> An exploratory study evaluated best-management techniques for replanting a commercial vineyard suffering from both a high incidence of <i>Grapevine leafroll associated virus-3</i> and high densities of northern root-knot nematode (<i>Meloidogyne hapla</i>). The grower had two goals: to reduce the density of plant-parasitic nematodes, which can delay establishment of young vines, using a pre-plant fumigant, and to reduce survival of virus-infected vine tissue by applying an herbicide to the foliage prior to vine removal. <h3>Key Findings:</h3> Fall-applied metam sodium reduced densities of <i>M. hapla</i> in the following growing season. Its herbicidal properties also resulted in high root mortality. In cases where vines survived, only a few shoots (and suckers) emerged, displaying typical morphology. Fall-applied foliar glyphosate significantly reduced shoot and sucker regrowth, but did not kill root tissue. In the few instances where shoots and suckers grew the following spring, that tissue expressed typical symptoms of glyphosate phytotoxicity. While low rates of abnormal growth would eliminate much of the aerial reservoir of virus, the presence of live roots indicates that rogue vines and living root debris could contribute to infection of new, virus-free planting stock. Combining fumigant and foliar glyphosate was additive: nematode control, root mortality, and a lack of healthy shoot/crown sucker regrowth. <h3>Impact and Significance:</h3> This preliminary work showed that the combination of fall fumigation and foliar glyphosate application reduced nematode populations and vine survival. In situations where plant-parasitic nematodes are the sole issue facing replanting, fumigation alone suffices. Where virus alone is the impetus for replanting, fall-applied foliar glyphosate may provide sufficient overall vine mortality, with a caveat of low root mortality and its attendant risk of root-feeding vectors spreading the virus to new planting stock.
A Novel MEMS Micromirror Optical Switch (2008)

A novel optical switch based on micro electro mechanical systems (MEMS) technology has been proposed. Two types of switch configurations have been analyzed. The collimating lenses used in other MEMS switches have been eliminated thus making the switch smaller in size and cheaper in cost. Theoretical coupling losses as a function of radius of curvature for this switch at 645nm λ = have been compared with the experimental coupling losses.
The Anterolateral Structure of the Knee Does Not Affect Anterior and Dynamic Rotatory Stability in Anterior Cruciate Ligament Injury: Quantitative Evaluation With the Electromagnetic Measurement System (2019)

Recent growing interest about ALL reconstruction or ALS augmentation may not have a large role in controlling either anterior or dynamic rotatory knee instability in isolated ACL-deficient knees.
Kinetic and equilibrium studies of the ligand binding reactions of eight electrophoretic components of sperm whale ferrimyoglobin (1975)

The reactions of eight electrophoretic components of sperm whale ferrimyoglobin with fluoride, azide, and cyanide have been studied. There do not appear to be significant differences in rate constants or equilibrium constants among the various components. We conclude that at pH 7.0 in 0.05 M potassium phosphate these ligand binding kinetics and equilibria are insensitive to the net charge on the protein. The variation of the azide equilibrium constant with ionic strength from mu 0.01 M to 0.11 M is not in accord with the predictions of the Debye-Hückel theory. On the other hand, azide association kinetic and equilibrium constants are respectively six- and threefold greater for beef ferrimyoglobin than for the isoelectric whale ferrimyoglobin (band V). An examination of the data for whale, horse, and beef myoglobins reveals that large differences in azide (but not CO) association rate constants are associated with amino acid substitutions at residues 45 and 99 in the heme cavity.
Structure from Motion via Two-State Pipeline of Extended Kalman Filters (2007)

We introduce a novel approach to on-line structure from motion, using a pipelined pair of extended Kalman filters to improve accuracy with a minimal increase in computational cost. The two filters, a leading and a following filter, run concurrently on the same measurements in a synchronized producer-consumer fashion, but offset from each other in time. The leading filter estimates structure and motion using all of the available measurements from an optical flow based 2D tracker, passing the best 3D feature estimates, covariances, and associated measurements to the following filter, which runs several steps behind. This pipelined arrangement introduces a degree of noncausal behavior, effectively giving the following filter the benefit of decisions and estimates made several steps ahead. This means that the following filter works with only the best features, and can begin full 3D estimation from the very start of the respective 2D tracks. We demonstrate a reduction of more than 50% in mean reprojection errors using this approach on real data.
Turbo code at 0.03 dB from capacity limit (2003)

We propose a rate 1/3 infinite-length irregular turbo code capable of achieving an error rate P/sub eb/=10/sup -5/ at signal-to-noise ratio E/sub b//N/sub 0/=-0.46 dB, which is at distance 0.03 dB from Shannon capacity limit. Our turbo code is derived by a simple modification of the original Berrou-Glavieux code.
Point-plane SLAM for hand-held 3D sensors (2013)

We present a simultaneous localization and mapping (SLAM) algorithm for a hand-held 3D sensor that uses both points and planes as primitives. We show that it is possible to register 3D data in two different coordinate systems using any combination of three point/plane primitives (3 planes, 2 planes and 1 point, 1 plane and 2 points, and 3 points). Our algorithm uses the minimal set of primitives in a RANSAC framework to robustly compute correspondences and estimate the sensor pose. As the number of planes is significantly smaller than the number of points in typical 3D data, our RANSAC algorithm prefers primitive combinations involving more planes than points. In contrast to existing approaches that mainly use points for registration, our algorithm has the following advantages: (1) it enables faster correspondence search and registration due to the smaller number of plane primitives; (2) it produces plane-based 3D models that are more compact than point-based ones; and (3) being a global registration algorithm, our approach does not suffer from local minima or any initialization problems. Our experiments demonstrate real-time, interactive 3D reconstruction of indoor spaces using a hand-held Kinect sensor.
Comment: influence of illuminating beyond the object support on Zernike-type phase contrast filtering (2003)

In this comment, we clarify some serious misinterpretations that can arise from an uncritical use of the results presented in [Appl. Opt. 41, 2607, (2002)]. In particular, we point out that their suggestion of using "illumination beyond the object support" for measuring phase disturbances can result in distorted or strongly inaccurate interference patterns. We also point out that Llave and Castillo have misinterpreted our previous work describing the effect of phase object fill factor on the output interference patterns, which is in fact one of the key factors considered in the generalized phase contrast (GPC) method. Unlike the Zernike method, the GPC method results in an optimized visualization of the phase disturbance by the achievement of a matching condition between the applied filter and the spatial average of a given phase disturbance, thereby implying the optimal use of fill factor information.
A low-power high-flow shape memory alloy wire gas microvalve (2012)

In this paper the use of shape memory alloy (SMA) wire actuators for high gas flow control is investigated. A theoretical model for effective gas flow control is presented and gate microvalve prototypes are fabricated. The SMA wire actuator demonstrates the robust flow control of more than 1600 sccm at a pressure drop of 200 kPa. The valve can be successfully switched at over 10 Hz and at an actuation power of 90 mW. Compared to the current state-of-the-art high-flow microvalves, the proposed solution benefits from a low-voltage actuator with low overall power consumption. This paper demonstrate that SMA wire actuators are well suited for high-pressurehigh-flow applications.
Author response: A genome-wide view of the de-differentiation of central nervous system endothelial cells in culture (2019)

In vitro culture of brain endothelial cells leads to a rapid loss of the blood-brain barrier transcriptional and accessible chromatin landscapes that is resistant to the effects of beta-catenin stabilization.
Binary Power Control in Dynamic Spectrum Access (2011)

In future wireless networks there is a need for distributed power allocation algorithms which are simple, but at the same time yields sufficient spectral efficiency. In this paper we investigate binary power control schemes in a wireless multiuser, multiband interference system, where each user
Poster: X60 (2017)

We introduce X60, the first SDR-based testbed for 60 GHz WLANs, featuring fully programmable MAC/PHY/Network layers, multi-Gbps rates, and a user-configurable 12-element phased antenna array. These features provide us with an unprecedented opportunity to revisit the most important aspects of 60 GHz signal propagation and obtain new insights on performance expected from practical 60 GHz systems. X60's unique capabilities make it an ideal platform for experimentation and prototyping across layers.
Synthesis and Crystal Structures of Thiolate-Bridged Diruthenium Complexes Containing Two Olefinic Ligands (1996)

Abstract A series of thiolate-bridged dinuclear ruthenium complexes containing two electron-deficient olefinic ligands [Cp*Ru(μ-SR)2(η2-C2H3R′)2RuCp*] (R = Pri, Et, 2,6-C6H3Me2 or 2,4,6-C6H2Me3; R′ = CN, COOMe or CHO) have been synthesized from Ru(II)-Ru(II), Ru(II)-Ru(III) and/or Ru(III)-Ru(III) precursors, three of which have been characterized by X-ray structural analysis.
Association of Body Mass Index With Coronary Artery Calcium and Subsequent Cardiovascular Mortality (2020)

In a large sample undergoing CAC scoring, obesity was associated with a higher risk of CAC and subsequent coronary heart disease, CVD, and all-cause mortality. However, overweight individuals did not have a higher risk of mortality despite a higher risk for CAC.
Neue Perspektiven - Wie 3D-Stadtmodelle erstellt und verwendet werden (2005)

An vielen Stellen wird ein dreidimensionales Modell den herkömmlichen Stadtplan künftig ablösen. Anwohner können sich dann im Internet einen realistischen Eindruck verschaffen, wie ihr Wohnort in ein paar Jahren aussehen soll, oder sogar zum virtuellen Flug über das eigene Viertel starten. In den Navigationssystemen von morgen helfen die Modelle Autofahrern und auch Fuss gängern, intuitiver den richtigen Weg zu finden.
Does primary myelofibrosis involve a defective stem cell niche? From concept to evidence (2008)

Primary myelofibrosis (PMF) is the rarest and the most severe Philadelphia-negative chronic myeloproliferative syndrome. By associating a clonal proliferation and a mobilization of hematopoietic stem cells from bone marrow to spleen with profound alterations of the stroma, PMF is a remarkable model in which deregulation of the stem cell niche is of utmost importance for the disease development. This paper reviews key data suggesting that an imbalance between endosteal and vascular niches participates in the development of clonal stem cell proliferation. Mechanisms by which bone marrow niches are altered with ensuing mobilization and homing of neoplastic hematopoietic stem cells in new or reinitialized niches in the spleen and liver are examined. Differences between signals delivered by both endosteal and vascular niches in the bone marrow and spleen of patients as well as the responsiveness of PMF stem cells to their specific signals are discussed. A proposal for integrating a potential role for the JAK2 mutation in their altered sensitivity is made. A better understanding of the cross talk between stem cells and their niche should imply new therapeutic strategies targeting not only intrinsic defects in stem cell signaling but also regulatory hematopoietic niche-derived signals and, consequently, stem cell proliferation.
Elettropneumatica per l'articolazione dell'anca (2012)

L'articolo descrive una modellazione di tutore atto alla neuroriabilitazione robotizzata. In particolare è stato modellizzato il controllo e l'articolazione dell'anca. Sono stati confrontati alcuni risultati sperimentali con alcuni risultati teorici e i primi risultati sono buoni
300-μJ pulse-energy, 2-ns pulse fiber amplifier at 1567 nm (2005)

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 F. Di Teodoro, M. Savage-Leuchs, and M. Norsen, "300-μJ pulse-energy, 2-ns pulse fiber amplifier at 1567 nm," in Advanced Solid-State Photonics, Technical Digest (Optica Publishing Group, 2005), paper TuC4. Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
Intracavity laser beam control (1999)

The overview of the works on the intracavity laser beam control and formation of different types of lasers are presented in this paper. Also, the design of the different types of the bimorph correctors for the low-order aberrations compensation is discussed. An example of the efficiency of the use of the bimorph mirror to change the output excimer laser beam profile is given.
Oxidic Composite for Dental Purposes: Effect of the Laminin 1 Adsorption on Cells Growth (2013)

As major molecules of the basement membrane (BM), laminins are important protein fragments for the epithelial cell adhesion and migration. Since oxidic ceramics are potentially suitable for dental applications, the present paper is focused on the study of laminin interaction with the surface of two alumina-zirconia composites with different percentage in ZrO2, both with submicrometric grain size. Laminin 1 (Ln-1) was adsorbed onto the surface and the interaction was studied via XPS. The cells grown on the laminin-functionalized materials showed good vitality and spreading.
1-bit compressed sensing with edge detection for compressed radio wave data transfer (2012)

The “Flexible Wireless System (FWS)” has been proposed as a networked system for the “User-Centric Wireless Network (UCWN)”. The UCWN will allow users to make network connections easily at all times without being conscious of any upgrades or differences in wireless systems. The FWS is a unified wireless platform that simultaneously deals with various types of wireless signals. It consists of flexible access points and a wireless signal processing platform. Various types of wireless signals are received at a distributed flexible access point and transferred to a server in the wireless signal processing platform through the wired access line. Transferred signals are separated and demodulated at the server. To achieve highly flexible and efficient radio wave data transfer between the access point and the FWS server, we consider compression of transfer data. In this paper, we propose 1-bit compressed sensing with smoothed edge detection, which enhances compression and reconstruction performance. This paper shows the performance of the proposed method by using computer simulations to explore the method's validity for transferring compressed radio wave data.
A Single Recombinant Adenovirus Expressing p53 and p21-targeting Artificial microRNAs Efficiently Induces Apoptosis in Human Cancer Cells (2009)

These results suggest that adenovirus-mediated transduction of p53 and p21-specific microRNAs may be useful for gene therapy of human cancers.
Global monitoring of fluidized-bed processes by means of microwave cavity resonances (2014)

We present an electromagnetic measurement system for monitoring of the effective permittivity in closed metal vessels, which are commonly used in the process industry. The measurement system exploits the process vessel as a microwave cavity resonator and the relative change in its complex resonance frequencies is related to the complex effective permittivity inside the vessel. Also, thermal expansion of the process vessel is taken into account and we compensate for its influence on the resonance frequencies by means of a priori information derived from a set of temperature measurements. The sensitivities, that relate the process state to the measured resonance frequencies, are computed by means of a detailed finite element model. The usefulness of the proposed measurement system is successfully demonstrated for a pharmaceutical fluidized-bed process, where the water and solid contents inside the process vessel is of interest.
Kinetics and mechanism for thermal and photochemical decomposition of 4,4′-azobis(4-cyanopentanoic acid) in aqueous media (2019)

The two diastereoisomers of 4,4′-azobis(4-cyanopentanoic acid) decompose at different rates in aqueous media. The major products (&gt;50%) are amides produced by trapping the ketenimines formed by C–N coupling.
Microwave Radiometry – Imaging Technology and Applications (2007)

Basics of microwave radiometry are presented. Present and future imaging technologies, systems and applications are illustrated.
Highly Scalable Raised Source/Drain InAs Quantum Well MOSFETs Exhibiting I ON = 482 μA/μm at I OFF = 100 nA/μ ma ndV DD = 0. 5V (2014)

We report raised source/drain (S/D) InAs quantum well MOSFETs incorporating a vertical spacer formed by metal- organic chemical vapor deposition epitaxial regrowth. By adopt- ing a 12-nm-thick vertical spacer between the channel and the N+ S/D, OFF-state characteristics are significantly improved. A device with a 40-nm-L g and 12-nm-thick spacer shows 2.5-mS/µm peak transconductance (gm), 86-mV/decade sub- threshold swing at V DS = 0.5 V, 83-mV/V drain-induced barrier lowering, and 482-µA/µm ON-current at 100-nA/µm OFF-current and V DD = 0.5 V. In addition, a 3.0-mS/µ mp eak gm at V DS = 0.5 V is achieved in an 18-nm-L g device with a 2-nm-thick spacer, the highest reported peak gm of any field- effect transistor.
Aligned PVDF-TrFE Nanofibers With High-Density PVDF Nanofibers and PVDF Core–Shell Structures for Endovascular Pressure Sensing (2014)

Nanostructures of polyvinyledenedifluoride-tetrafluoroethylene (PVDF-TrFE), a semicrystalline polymer with high piezoelectricity, results in significant enhancement of crystallinity and better device performance as sensors, actuators, and energy harvesters. Using electrospinning of PVDF to manufacture nanofibers, we demonstrate a new method to pattern high-density, highly aligned nanofibers. To further boost the charge transfer from such a bundle of nanofibers, we fabricated novel core-shell structures. Finally, we developed pressure sensors utilizing these fiber structures for endovascular applications. The sensors were tested in vitro under simulated physiological conditions. We observed significant improvements using core-shell electrospun fibers (4.5 times gain in signal intensity, 4000 μV/mmHg sensitivity) over PVDF nanofibers (280 μV/mmHg). The preliminary results showed that core-shell fiber-based devices exhibit nearly 40-fold higher sensitivity, compared to the thin-film structures demonstrated earlier.