gebhart/patrepeval huggingface dataset:
Synthesis and processing of ceramic superconductors. Final report, 1 July 1987-1 July 1988 (1988)

This report includes these topics: Synthesis and Processing of Ceramic Superconductors, Powder Processing for Microstructural Control in Ceramic Superconductors, Ba/sub 2/YCu/sub 3/O6.9 Powder Preparation by Sol-Gel Emulsion Techniques, Magnetic Inducement of Texture in Ba/sub 2/YCu/sub 3/O6.9 Particle Assemblies Under Cryogenic Conditions, Reaction of Ba/sub 2/YCu/sub 3/O6.9 Films with Yttria-Stabilized Zirconia Substrates, and Synthesis of Ba/sub 2/YCu/sub 3/O6.9 Powder.
Molecular and submolecular scale effects of comb‐copolymers on tri‐calcium silicate reactivity: Toward molecular design (2017)

Abstract The impact of organic compounds on the processing and reactivity of inorganic materials has been a source of inspiration for materials scientists for decades and continues to trigger novel and innovative applications in a broad range of disciplines. However, molecular design of such compounds to reach targeted properties remains challenging, particularly for reactive and multicomponent systems. This outstanding challenge is met here by combining a model cement, hosting different coupled reactions of dissolution, nucleation and growth, together with comb‐copolymers that offer large and well‐controlled variations of their molecular architecture. We show that silicate reactivity is affected by a combination of molecular and submolecular scale effects of these polymers. The first can be described by scaling laws from polymer physics, whereas the second involves specific chemical interactions. In particular, the ability of these polymers to hinder dissolution appears to be crucial, something for which strong experimental evidence is provided.
Optical Mapping (2002)

Abstract Voltage‐sensitive fluorescent dyes that bind to cell membranes allow the transmembrane potential to be recorded without insertion of microelectrodes or the use of extracellular electrodes. Such optical mapping is used to record action potentials from cardiac and neuronal tissues.
Expression and activity of isoenzymes of superoxide dismutase in wheat roots in response to hypoxia and anoxia (2000)

ABSTRACT We investigated the effects of hypoxia, anoxia and reaeration on enzymatic activity and expression of superoxide dismutase (SOD) isoforms in wheat roots ( Triticum aestivum L.). Neither hypoxia nor subsequent re‐aeration caused significant changes in SOD isoenzyme pattern compared with aerated controls. However, anoxia led to the appearance of additional activity bands of SOD in native gels resulting in an increase in total activity. Additional isoformic bands remained also apparent in the following recovery period. Re‐aeration following both hypoxia and anoxia resulted in an increased content of hydrogen peroxide in roots. SOD transcript and protein levels were only slightly altered in response to hypoxia. Although SOD mRNA levels were diminished, protein content of different SOD isoforms increased with duration of anoxia. Incubation of roots with cycloheximide revealed that the additional activity bands and higher SOD protein content under anoxia were not due to de novo synthesis. Crude subcellular fractionation experiments implied that the anoxia‐responsive SOD isoforms might be plastid‐associated. We suggest that SOD is a very stable enzyme which, under anoxia, accumulates relative to total protein content and remains active even after protein modification under severe environmental stress conditions.
DoubleFusion: Real-Time Capture of Human Performances with Inner Body Shapes from a Single Depth Sensor (2018)

We propose DoubleFusion, a new real-time system that combines volumetric dynamic reconstruction with data-driven template fitting to simultaneously reconstruct detailed geometry, non-rigid motion and the inner human body shape from a single depth camera. One of the key contributions of this method is a double layer representation consisting of a complete parametric body shape inside, and a gradually fused outer surface layer. A pre-defined node graph on the body surface parameterizes the non-rigid deformations near the body, and a free-form dynamically changing graph parameterizes the outer surface layer far from the body, which allows more general reconstruction. We further propose a joint motion tracking method based on the double layer representation to enable robust and fast motion tracking performance. Moreover, the inner body shape is optimized online and forced to fit inside the outer surface layer. Overall, our method enables increasingly denoised, detailed and complete surface reconstructions, fast motion tracking performance and plausible inner body shape reconstruction in real-time. In particular, experiments show improved fast motion tracking and loop closure performance on more challenging scenarios.
Overcoming barriers to wider adoption of mobile telerobotic surgery (2008)

A portable robotic telesurgery network could remove the geographic disparity of surgical care and provide expert surgical support for first responders to traumatic injury. This is particularly relevant to battlefield medicine where surgical intervention is currently not available to the most perilous fighting circumstances. Similar utility applies to the peacetime healthcare mission. The authors identify the potential advantage to healthcare from a mobile robotic telesurgery system and specify barriers to the employability and acceptance of such a system. This presentation will describe a collaborative effort to design and develop one or more portable robotic systems for telesurgery and develop those systems through successful animal trials. Recent advances in engineering, computer science and clinical technologies have enabled prototypes of portable robotic surgical platforms. Specific challenges remain before a working platform is suitable for animal trials, such as the inclusion of image-guidance and automated tasks
Decentralized planning for complex missions with dynamic communication constraints (2010)

This paper extends the consensus-based bundle algorithm (CBBA), a distributed task allocation framework previously developed by the authors, to address complex missions for a team of heterogeneous agents in a dynamic environment. The extended algorithm proposes appropriate handling of time windows of validity for tasks, fuel costs of the vehicles, and heterogeneity in the agent capabilities, while preserving the robust convergence properties of the original algorithm. An architecture to facilitate real-time task replanning in a dynamic environment is also presented, along with methods to handle varying communication constraints and dynamic network topologies. Simulation results and experimental flight tests in an indoor test environment verify the proposed task planning methodology for complex missions.
Supplementary Figure Legends from Cancer-Associated Fibroblasts Expressing CXCL14 Rely upon NOS1-Derived Nitric Oxide Signaling for Their Tumor-Supporting Properties (2023)

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Thermochemical Reactions between Nano-Polycrystalline Diamond and Grinding Tool Made of Polycrystalline Diamond (2011)

A dry grinding test of a nano-polycrystalline diamond (NPD) using a polycrystalline diamond (PCD) disc as a truer was conducted to clarify the mechanism of thermochemical reactions to remove chips from the NPD. The PCD disc, in which the cobalt used as a second phase was replaced with several transition metals by electrochemical machining and radio frequency sputtering, was used as a truer. It was verified through the grinding test that at least two types of thermochemical reactions generated and affected layers on the ground surface of the NPD were abraded by diamond grains on the PCD truer. One is an affected layer, in which the covalent binding of diamond was weakened by loosing electrons engaged in the binding owing to the transition metal attracting electrons towards itself. Machining efficiency increased and ground surface roughness became rough with an increase in the electronegativity of transition metals when this type of affected layer was generated. The other type of affected layer is a heat-damaged layer, which has the same crystal structure as a laser- machined surface, formed by the friction heat between the NPD and the truer. A generation of this type of affected layer increased and surface roughness became fine by increasing the specific heat capacity of transition metals.
Correction to "Eliminate Reactive Power and Increase System Efficiency of Isolated Bidirectional Dual-Active-Bridge DC–DC Converters Using Novel Dual-Phase-Shift Control" [Nov 08 2905-2914] (2012)

Presents corrections to the above titled paper (ibid., vol. 23, no. 6, pp. 2905-2914, Nov. 2008).
Protection from Inflammatory Organ Damage in a Murine Model of Hemophagocytic Lymphohistiocytosis Using Treatment with IL-18 Binding Protein (2012)

Hemophagocytic lymphohistiocytosis (HLH) is a life-threatening condition due to the association of an infectious agent with lymphocyte cytotoxicity defects, either of congenital genetic origin in children or presumably acquired in adults. In HLH patients, an excess of lymphocyte or macrophage cytokines, such as IFN-γ and TNFα is present in serum. In animal models of the disease, IFN-γ and TNF-α have been shown to play a central pathogenic role. In humans, unusually high concentrations of IL-18, an inducer of IFN-γ, and TNF-α have been reported, and are associated with an imbalance between IL-18 and its natural inhibitor IL-18 binding protein (IL-18BP) resulting in an excess of free IL-18. Here we studied whether IL-18BP could reduce disease severity in an animal model of HLH. Mouse cytomegalovirus infection in perforin-1 knock-out mice induced a lethal condition similar to human HLH characterized by cytopenia with marked inflammatory lesions in the liver and spleen as well as the presence of hemophagocytosis in bone marrow. IL-18BP treatment decreased hemophagocytosis and reversed liver as well as spleen damage. IL-18BP treatment also reduced both IFN-γ and TNF-α production by CD8(+) T and NK cells, as well as Fas ligand expression on NK cell surface. These data suggest that IL-18BP is beneficial in an animal model of HLH and in combination with anti-infectious therapy may be a promising strategy to treat HLH patients.
Female Urology, 2nd ed.RazS.: Female Urology. Philadelphia: W. B. Saunders Co.1996. 666 pages. (1997)

No AccessJournal of UrologyBook Review1 May 1997Female Urology, 2nd ed. Arthur L. BurnettMD Arthur L. BurnettArthur L. Burnett More articles by this author View All Author Informationhttps://doi.org/10.1016/S0022-5347(01)64919-XAboutFull TextPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail "Female Urology, 2nd ed.." The Journal of Urology, 157(5), pp. 2033–2034 Department of Urology, James Buchanan Brady Urological Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland.© 1997 by American Urological Association, Inc.FiguresReferencesRelatedDetails Volume 157Issue 5May 1997Page: 2033-2034 Advertisement Copyright & Permissions© 1997 by American Urological Association, Inc.MetricsAuthor Information Arthur L. Burnett More articles by this author Expand All Advertisement PDF downloadLoading ...
6G Wireless Communications: From Far-field Beam Steering to Near-field Beam Focusing (2022)

6G networks will be required to support higher data rates, improved energy efficiency, lower latency, and more diverse users compared with 5G systems. To meet these requirements, electrically extremely large-scale antenna arrays are envisioned to be key physical-layer technologies. As a consequence, it is expected that some portion of future 6G wireless communications may take place in the radiating near-field (Fresnel) region, in addition to the far-field operation as in current wireless technologies. In this article, we discuss the opportunities and challenges that arise in radiating near-field communications. We begin by discussing the key physical characteristics of near-field communications, where the standard plane-wave propagation assumption no longer holds, and clarifying its implication on the modelling of wireless channels. Then, we elaborate on the ability to leverage spherical wavefronts via beam focusing, highlighting its advantages for 6G systems. We point out several appealing application scenarios which, with proper design, can benefit from near-field operation, including interference mitigation in multi-user communications, accurate localization and focused sensing, as well as wireless power transfer with minimal energy pollution. We conclude by discussing some of the design challenges and research directions that are yet to be explored to fully harness the potential of near-field operation.
Development of a simple model device for in vitro gastric digestion investigation (2011)

There have been some reports in the literature of model gastric digestion systems to mimic the dynamic physiological processes within the gastrointestinal tract. However, such devices often require the specification of many control parameters making routine digestion tests unfeasible. This paper introduces a simple in vitro digestion device, comprising of a water-jacketed glass vessel into which a spherical Teflon probe of variable diameter can be inserted. The probe is controlled by a texture analyser to simulate the kinetics of a food digestion process. Using this device under well controlled hydrodynamic flow and biochemical conditions key digestion parameters such as pH, food particle size, protein release, lipid release, cloudiness, etc, can be determined. Feasibility tests of the model device have been conducted using roasted and non-roasted peanuts particles. The status of peanut digestion was examined by the changes in particle size distribution and the mean particle size. Significant differences of surface microstructure have also been observed for peanut particles after the digestion. The influence of parameters such as food to gastric juice ratio, the probe speed and pepsin concentration have been examined in this work. Initial results confirm that all these factors influence the kinetic process of gastric digestion considerably and should be well regulated in any in vitro digestion investigations. We propose that the model device has the advantages of easy control and operation and furthermore could be an ideal tool for routine in vitro gastric digestion studies.
Effect of Collagen-Enhanced Fibrin Sealant on Seroma Formation in a Rat Mastectomy Model (2020)

Background: Seromas are caused by leakage of lymphovascular fluid into postoperative dead space. This is the most common complication after reconstructive breast surgery. The purpose of this study is to demonstrate the utility of seroma-preventing substances by using a collagen-enhanced fibrin sealant on a rat mastectomy model.Methods: Thirty-six Sprague-Dawley rats were divided into three groups. After mastectomy and axillary lymph node dissection, normal saline was applied to the dead spaces in group 1 (control). In group 2, a collagen-enhanced fibrin sealant was applied, and in group 3, triamcinolone acetate solution was applied. Afterwards, the amount of seroma was measured by three-dimensional micro-computed tomography (3D micro-CT) volumetry analysis and manual aspiration after 7 and 14 days, respectively.Results: The volume of seroma were significantly reduced in groups 2 and 3 compared to group 1 in both 3D micro-CT volumetry analysis and manual aspiration on postoperative day 7 (P&lt;0.001). In addition, the results observed in day 14 also showed a decrease in the amount of seroma analyzed by CT in groups 2 and 3 compared to group 1 (P&lt;0.05). In histopathologic examination inflammation was observed more frequently in group 1 and angiogenesis was more active in group 2.Conclusion: The use of a collagen-enhanced fibrin sealant (Collaseal) is as effective as triamcinolone control injected in a rat mastectomy model.
Compressive shift retrieval (2013)

The classical shift retrieval problem considers two signals in vector form that are related by a cyclic shift. In this paper, we develop a compressive variant where the measurement of the signals is undersampled. While the standard procedure to shift retrieval is to maximize the real part of their dot product, we show that the shift can be exactly recovered from the corresponding compressed measurements if the sensing matrix satisfies certain conditions. A special case is the partial Fourier matrix. In this setting we show that the true shift can be found by as low as two measurements. We further show that the shift can often be recovered when the measurements are perturbed by noise.
Effect of Spray Method and Sprayed Material on Creep Behavior of MCrAlY Coating (2022)

The blade of gas turbines used in combined cycle power plant are exposed to a high-temperature combustion gas. In order to protect it from such a harsh environment, a thermal barrier coating (TBC) is applied to the surface of the blade. TBC consists of a top coat (TC), which is a thermal barrier layer, and a bond coat (BC), which increases the adhesion strength between the TC and the substrate. Thermal stress is caused by the thermal expansion mismatch between the TC and substrate, which leads to delaminating in TC. In order to reduce such thermal stress in TC, creep deformability of BC is essential. In this study, we attempted to evaluate the creep deformation property of BC by creep indentation test method developed by our group. CoNiCrAlY and CoCrAlY are selected as BC materials and APS and HVOF are also as thermal spraying methods, and the creep indentation tests were conducted at various temperatures. It was found that material differences had little effect on creep deformation properties, and that creep properties were strongly affected by the thermal spraying method even if the material systems had the same chemical composition.
Novel probabilistic approach for conditionally stable LNA design (2004)

A novel stability investigation method based on the probabilistic approach to low-noise amplifier design is presented. The main differences between existing stability determination, and the probabilistic method are shown. A new parameter called oscillation probability and a distribution law concept for input/output LNA impedances are applied.
When Idle Is Not Quiet: Energy-Efficient Platform Design in Presence of Network Background and Management Traffic (2010)

Today's platforms offer ubiquitous network connectivity through one or more communication interfaces and while the communication devices consume a small portion of the overall platform power the impact of network connectivity and individual packet processing on the overall platform energy consumption is significant, due to the non-deterministic characteristics of network traffic. In this paper we show that significant energy is unnecessarily wasted at the platform level while it is idle and connected to one or more networks, especially unlicensed networks like WiFi or Ethernet, because the system is constantly processing what we term "background/noise" traffic. We quantify the negative impact of network connectivity on platform energy-efficiency and provide novel techniques to mitigate this impact. We implemented these mitigation techniques in our wireless network interface cards and our results indicate that when our scheme is used the total platform sleep time increases by up to 40% with no performance degradation and no user experience impact.
A comparison of newer tests for the diagnosis of onchocerciasis (2000)

Samples of human serum, skin and urine, collected in Cameroon, were used to assess the value of some newer methods for the diagnosis of onchocerciasis. Parasite DNA was detected in skin snips and urine by PCR, and parasite antigen was detected in serum and urine by immunoblotting. Serum concentrations of IgG4 antibodies reacting with recombinant Onchocerca volvulus antigens (OC3.6 and OC9.3) were also measured, using an ELISA. The PCR-based tests of skin snips and the serological tests for antigen and antibody tests showed higher sensitivities (90%–100%) than the urine PCR (14%) or the urine antigen test (68%). Although antibody detection is much easier to perform than tests based on PCR or antigen detection, the latter have an advantage in that they are only positive in people with current infections. Thus, antibody testing may be more useful for screening populations for infection or exposure to O. volvulus, whereas PCR and antigen testing are potentially more useful for diagnosis of infections in individuals and for monitoring the success of therapy.
Advances in Our Clinical Understanding of Autonomic Regulation Therapy Using Vagal Nerve Stimulation in Patients Living With Heart Failure (2022)

The ANTHEM-HF, INOVATE-HF, and NECTAR-HF clinical studies of autonomic regulation therapy (ART) using vagus nerve stimulation (VNS) systems have collectively provided dose-ranging information enabling the development of several working hypotheses on how stimulation frequency can be utilized during VNS for tolerability and improving cardiovascular outcomes in patients living with heart failure (HF) and reduced ejection fraction (HFrEF). Changes in heart rate dynamics, comprising reduced heart rate (HR) and increased HR variability, are a biomarker of autonomic nerve system engagement and cardiac control, and appear to be sensitive to VNS that is delivered using a stimulation frequency that is similar to the natural operating frequency of the vagus nerve. Among prior studies, the ANTHEM-HF Pilot Study has provided the clearest evidence of autonomic engagement with VNS that was delivered using a stimulation frequency that was within the operating range of the vagus nerve. Achieving autonomic engagement was accompanied by improvement from baseline in six-minute walk duration (6MWD), health-related quality of life, and left ventricular EF (LVEF), over and above those achieved by concomitant guideline-directed medical therapy (GDMT) administered to counteract harmful neurohormonal activation, with relative freedom from deleterious effects. Autonomic engagement and positive directional changes have persisted over time, and an exploratory analysis suggests that improvement in autonomic tone, symptoms, and physical capacity may be independent of baseline NT-proBNP values. Based upon these encouraging observations, prospective, randomized controlled trials examining the effects on symptoms and cardiac function as well as natural history have been warranted. A multi-national, large-scale, randomized, controlled trial is well underway to determine the outcomes associated with ART using autonomic nervous system engagement as a guide for VNS delivery.