gebhart/patrepeval huggingface dataset:
Delaunay Graph Based Inverse Distance Weighting for Fast Dynamic Meshing (2017)

Abstract A novel mesh deformation technique is developed based on the Delaunay graph mapping method and the inverse distance weighting (IDW) interpolation. The algorithm maintains the advantages of the efficiency of Delaunay graph mapping mesh deformation while it also possesses the ability of better controlling the near surface mesh quality. The Delaunay graph is used to divide the mesh domain into a number of sub-domains. On each sub-domain, the inverse distance weighting interpolation is applied, resulting in a similar efficiency as compared to the fast Delaunay graph mapping method. The paper will show how the near-wall mesh quality is controlled and improved by the new method
Distributed Resource Allocation in5GCellular Networks (2016)

Future wireless networks are expected to be highly heterogeneous, with the co-existence of macrocells and small cells as well as the provisioning for device-to-device communication. In such heterogeneous and multi-tier systems, centralized radio resource allocation and interference management schemes will not be scalable. Therefore, distributed resource allocation schemes will need to be designed. However, designing such distributed schemes is one of the fundamental research challenges for 5G multi-tier cellular wireless networks. After a brief overview of 5G cellular systems, this chapter highlights three novel approaches that can be used to solve the distributed-resource allocation problems in future heterogeneous networks. Specifically, we utilize the concepts of stable matching, factor-graph-based message passing, and distributed auctions and show their effectiveness in obtaining distributed solutions to the resource allocation problem. To this end, a brief qualitative comparison in terms of performance metrics, such as complexity, convergence, and signaling overhead, is presented.
Disappearance of morphine-induced hyperalgesia after discontinuing or substituting morphine with other opioid agonists (1994)

Hyperalgesia and allodynia in 4 cancer patients treated with morphine disappeared after discontinuing or substituting morphine with other opioid agonists. The first case describes a young female who developed hyperalgesia and myoclonus during intravenous morphine infusion. The hyperalgesia and myoclonus disappeared when the morphine administration was discontinued and she felt comfortable on small and sporadic oral doses of methadone. The second case describes hyperalgesia occurring after a small dose of sustained-release morphine which disappeared after alternative use of oral ketobemidone. The third case describes hyperalgesia following high doses of intramuscular morphine which disappeared after alternative use of continuous subcutaneous infusion of sufentanil. The fourth case describes a boy developing hyperalgesia after high doses of oral and intramuscular morphine. The hyperalgesia disappeared after discontinuing morphine administration but withdrawal symptoms developed due to too small doses of methadone. Possible mechanisms of morphine-induced hyperalgesia are discussed.
Design of an OFDMA-Based MAC Protocol for an Underwater Glider Network With Motion Prediction (2018)

Underwater glider is a cost-effective underwater unmanned vehicle with high endurance for applications in both civilian and military fields. Mobile underwater acoustic sensor networks are consisted of underwater gliders confront with several unique challenges, including high spatial-temporal uncertainty and long propagation delay of acoustic signal. In this paper, we propose an OFDMA-based MAC protocol named G-MAC for an underwater glider network, which leverages dynamic sub-channel allocation and transmission power adjustment. G-MAC is a multichannel MAC protocol dedicated for using in underwater centralized networks, which aims to maximize the network's goodput. To solve the optimal problem, G-MAC allows for concurrent data transmissions by applying Nash equilibrium to allocate transmission subchannel and related power adjustment. In addition, to reduce the negative impact from spatial uncertainty, a motion prediction method based on the characteristic of underwater glider is applied. Simulation results document that G-MAC outperforms the existing solutions in terms of network goodput and energy consumption in the representative network scenario.
Peripherally Inserted Central Catheter-Associated Nocardia nova Endocarditis in a Patient Receiving Intravenous Antibiotics for Chronic Lyme Disease (2021)

Long-term antibiotics are not effective for the therapy of patients with persistent symptoms and a history of Lyme disease. However, some clinicians still prescribe these therapies. We present a case of peripherally inserted central catheter-associated <i>Nocardia nova</i> endocarditis in a patient who had been receiving intravenous antibiotics for the management of chronic Lyme disease. This case highlights an important risk associated with the unscientific use of indwelling peripheral catheters and intravenous antibiotics for the management of such patients.
Mineral components in canned squid var. Illex (1990)

Abstract According to literature data the edible parts of squid contain significant amounts of mineral components as well as of trace elements and heavy metals [2, 4, 5, 7]. Their levels may be approximate to those allowed in Poland for canned fish. The aim of this work was to determine the content of the selected mineral components in canned squid var. Illex.
Responses of Neurons in Macaque Area V4 During Memory-guided Visual Search (2001)

In a typical scene with many different objects, attentional mechanisms are needed to select relevant objects for visual processing and control over behavior. To test the role of area V4 in the selection of objects based on non-spatial features, we recorded from V4 neurons in the monkey, using a visual search paradigm. A cue stimulus was presented at the center of gaze, followed by a blank delay period. After the delay, a two-stimulus array was presented extrafoveally, and the monkey was rewarded for detecting the target stimulus matching the cue. The array was composed of one 'good' stimulus (effective in driving the cell when presented alone) and one 'poor' stimulus (ineffective in driving the cell when presented alone). When the choice array was presented in the receptive field (RF) of the neuron, many cells showed suppressive interactions between the stimuli as well as strong attention effects. Within 150--200 ms of array onset, responses to the array were determined by the target stimulus. If the target was the good stimulus, the response to the array became equal to the response to the good stimulus presented alone. If the target was the poor stimulus, the response approached the response to that stimulus presented alone. Thus the influence of the nontarget stimulus was filtered out. These effects were reduced or eliminated when the poor stimulus was located outside the RF and, therefore, no longer competing for the cell's response. Overall, the results support a 'biased competition' model of attention, according to which objects in the visual field compete for representation in the cortex, and this competition is biased in favor of the behaviorally relevant object.
Hierarchy of Stable Morse Decompositions (2012)

We introduce an algorithm for construction of the Morse hierarchy, i.e., a hierarchy of Morse decompositions of a piecewise constant vector field on a surface driven by stability of the Morse sets with respect to perturbation of the vector field. Our approach builds upon earlier work on stable Morse decompositions, which can be used to obtain Morse sets of user-prescribed stability. More stable Morse decompositions are coarser, i.e., they consist of larger Morse sets. In this work, we develop an algorithm for tracking the growth of Morse sets and topological events (mergers) that they undergo as their stability is gradually increased. The resulting Morse hierarchy can be explored interactively. We provide examples demonstrating that it can provide a useful coarse overview of the vector field topology.
Role of hydroxyl radical in polymorphonuclear leukocyte-mediated bactericidal activity. (1980)

Among the antimicrobial systems of polymorphonuclear leukocytes (PMNs) are those that are oxygen-dependent. Recent interest has been directed at the hydroxyl radical(OH.), a highly reactive reduction product of oxygen, as a possible mediator of microbicidal activity. The role of OH. in PMN microbicidal activity is discussed in relation to the observations that (1) an enzymic OH. generating system consisting of xanthine oxidase plus acetaldehyde is bactericidal, (2) phagocytosing PMNs convert substrates like methional and 5,5-dimethyl pyrroline-1-oxide to products suggestive of OH.-mediated reactions and (3) PMN-mediated microbicidal activity is partially inhibited by scavengers of OH.
Anion‐Directed Conformation Switching and Trigonal Distortion in Hexakis(methylamine)nickel(II) Cations (2022)

Abstract The homoleptic [Ni(NH 2 CH 3 ) 6 ] 2+ cations have dozens of energetically feasible conformational isomers (conformers), and we herein show their conformation is tunable using counter anions. The reaction of Ni(NO 3 ) 2 or NiCl 2 with aqueous methylamine in dimethylformamide gave [Ni(NH 2 CH 3 ) 6 ](NO 3 ) 2 ( 1 ) or [Ni(NH 2 CH 3 ) 6 ]Cl 2 ( 2 ) in which methylamine ligands have axial or equatorial orientation with respect to the three‐fold principal axis, respectively. Interestingly, the conformation of methylamine ligands affects geometry around nickel(II) so that the nickel octahedron is trigonally compressed in 1 , whereas it is trigonally elongated in 2 , causing different visible light absorption properties between 1 and 2 . Density functional theory calculations showed that nitrate anions stabilize the axial conformer through two‐point hydrogen bonding interactions with methylamines, whereas spherical chloride anions promote deformation of the axial conformer into the equatorial conformer through formation of three‐point hydrogen bonding interactions.
Tetrahedral Bond Length Variations in Anorthite (1973)

With data from a refinement of primitive anorthite (Wainwright and Starkey, 1971), stepwise multiple linear regression analyses were undertaken to determine the factors most highly correlated with individual Si-O and Al-O bond lengths. All 4 calciums were assumed to be 7-coordinated, and 10 independent parameters were considered in the analyses of the 32 Si-O and, 32 A1-O distances. Only two parameters >[l/(Ca-O)'] and -1/cos(Al-O-Si) were found to be statistically significant. These two parameters are positively correlated to Si-O and Al-O distances, yielding multiple correlation coefficients of A.94 and 0.89 for the Si-O and A1-O populations, respectively.
Characterization of Multi-User Augmented Reality over Cellular Networks (2020)

Augmented reality (AR) apps where multiple users interact within the same physical space are gaining in popularity (e.g., shared AR mode in Pokemon Go, virtual graffiti in Google's Just a Line). However, multi-user AR apps running over the cellular network can experience very high end-to-end latencies (measured at 12.5 s median on a public LTE network). To characterize and understand the root causes of this problem, we perform a first-of-its-kind measurement study on both public LTE and industry LTE testbed for two popular multi-user AR applications, yielding several insights: (1) The radio access network (RAN) accounts for a significant fraction of the end-to-end latency (31.2%, or 3.9 s median), resulting in AR users experiencing high, variable delays when interacting with a common set of virtual objects in off-the-shelf AR apps; (2) AR network traffic is characterized by large intermittent spikes on a single uplink TCP connection, resulting in frequent TCP slow starts that can increase user-perceived latency; (3) Applying a common traffic management mechanism of cellular operators, QoS Class Identifiers (QCI), can help by reducing AR latency by 33% but impacts non-AR users. Based on these insights, we propose network-aware and network-agnostic AR design optimization solutions to intelligently adapt IP packet sizes and periodically provide information on uplink data availability, respectively. Our solutions help ramp up network performance, improving the end-to-end AR latency and goodput by ~40-70%.
Investigations into Multi-Scale Retinex (1998)

The main thrust of this paper is to investigate the multi-scale retinex (MSR) approach to image enhancement to explain the effect of the processing from a theoretical standpoint. This leads to a new algorithm with fewer arbitrary parameters that is more flexible, maintains colour fidelity, and still preserves the contrast-enhancement benefits of the original MSR method. To accomplish this we identify the explicit and implicit processing goals of MSR. By decoupling the MSR operations from one another, we build an algorithm composed of independent steps that separates out the issues of gamma adjustment, colour balance, dynamic range compression, and colour enhancement, which are all jumbled together in the original MSR method. We then extend MSR with colour constancy and chromaticity-preserving contrast enhancement.
A genetic approach to inactivating chemokine receptors using a modified viral protein (2020)

We have developed a genetic system, called degrakine, that specifically and stably inactivates chemokine receptors (CKR) by redirecting the ability of the HIV-1 protein, Vpu, to degrade CD4 in the endoplasmic reticulum (ER) via the host proteasome machinery. To harness Vpu’s proteolytic targeting capability to degrade new receptors, we fused a chemokine with the C terminal region of Vpu. The fusion protein, or degrakine, accumulates in the ER, trapping and functionally inactivating its target CKR. We have demonstrated that degrakines based on SDF-1 (CXCL12), MDC (CCL22) and RANTES (CCL5) specifically inactivate their respective receptor functions. Using a retroviral vector expressing the SDF-1 degrakine, we have established that CXCR4 is required for the homing of hematopoietic stem/progenitor cells (HSPC) to the bone marrow immediately after transplantation. Thus the degrakine provides an effective genetic tool to dissect receptor functions in a number of biological systems in vitro and in vivo.
Evidence against the involvement of 0,0-diradical intermediates in the pyrolysis of five-membered ring azo compounds (1972)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEvidence against the involvement of 0,0-diradical intermediates in the pyrolysis of five-membered ring azo compoundsDavid H. White, Paul B. Condit, and Robert G. BergmanCite this: J. Am. Chem. Soc. 1972, 94, 22, 7931–7933Publication Date (Print):November 1, 1972Publication History Published online1 May 2002Published inissue 1 November 1972https://pubs.acs.org/doi/10.1021/ja00777a050https://doi.org/10.1021/ja00777a050research-articleACS PublicationsRequest reuse permissionsArticle Views57Altmetric-Citations14LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
Yellow Coatings Produced on Glasses and Aluminum by the Sol‐Gel Process (1986)

The preparation of CeO 2 ‐TiO 2 coatings by the sol‐gel dip‐coating process, with curing at 500°C, was studied. The films were brilliant yellow and adherent to soda‐lime glass, a PbO‐containing glass, and aluminum foil. The transmittance, chromaticity, thickness, phase content, and surface microstructure of the films were determined.
Performance evaluation for 64-ary and 16-ary optically pre-amplified PPM systems with Fabry-P&#x00E9;rot filters and finite extinction ratio (2013)

In this study, we compare the end-to-end performance of optically pre-amplified 16-ary and 64-ary pulse position modulation (PPM) systems for the use in free-space optical communications. Simulations were carried out to evaluate the bit-error-ratio (BER) versus E <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">b</sub> /N <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> for several scenarios where E <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">b</sub> is the energy per bit and N <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> is the effective single-sided power spectral density of the noise at the amplifier input. For the optimum full width half maximum (FWHM) of the Fabry-Pérot filter combined with the optimal 3-dB bandwidth of the butterworth electrical filter in the presence of dual polarized amplifier noise and no extinction ratio, the required E <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">b</sub> /N <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> = 8.37 dB for 16-ary and E <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">b</sub> /N <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> = 7.1 dB for 64-ary at BER=10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-4</sup> . At extinction ratio of 15 dB, the 16-ary PPM system outperforms the 64-ary PPM system with E <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">b</sub> /N <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> = 10.8 dB for 16-ary and E <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">b</sub> /N <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> = 12.64 dB for 64-ary since the orthogonality of the M-ary PPM is not maintained any further. The results also indicate that 16-ary PPM systems are more suitable than 64-ary PPM systems for 10 Gbps inter-satellite optical links.
Protein thiols in spermatozoa and epididymal fluid of rats (1991)

Thiol (SH) oxidation to disulphides (SS) is thought to be involved in sperm chromatin condensation and tail structure stabilization, which occur during maturation of spermatozoa. Previously developed procedures, using the fluorescent labelling agent monobromobimane (mBBr), enabled us to study the thiol-disulphide status of spermatozoa. Electrophoretic separation of labelled sperm proteins from the caput and cauda regions showed that during maturation thiol oxidation occurs in many protein fractions from the tail and that the magnitude of oxidation differs between proteins. Among the protein bands, one major band (MPB), probably a dense fibre constituent, is quantitatively prominent. N-Ethylmaleimide (NEM) or mBBr alkylation (of intact spermatozoa) changes the mobility of the caput MPB, but not that of the cauda MPB. The results indicated that the altered mobility of MPB is mainly due to a change in its shape, possibly resulting from the alkylation of a few critical SH groups. Epididymal fluid proteins contain both SH and SS. The thiol and disulphide content of the various epididymal proteins appears similar, although some diminution in fluorescence is seen in epididymal fluid proteins from the cauda region as compared with those from the caput region. The prominent changes in thiol status occur in the spermatozoa.
Broadband tunable liquid crystal terahertz waveplates driven with porous graphene electrodes (2015)

Abstract Versatile devices, especially tunable ones, for terahertz imaging, sensing and high-speed communication, are in high demand. Liquid crystal based components are perfect candidates in the optical range; however, they encounter significant challenges in the terahertz band, particularly the lack of highly transparent electrodes and the drawbacks induced by a thick cell. Here, a strategy to overcome all these challenges is proposed: Few-layer porous graphene is employed as an electrode with a transmittance of more than 98%. A subwavelength metal wire grid is utilized as an integrated high-efficiency electrode and polarizer. The homogeneous alignment of a high-birefringence liquid crystal is implemented on both frail electrodes via a non-contact photo-alignment technique. A tunable terahertz waveplate is thus obtained. Its polarization evolution is directly demonstrated. Furthermore, quarter-wave plates that are electrically controllable over the entire testing range are achieved by stacking two cells. The proposed solution may pave a simple and bright road toward the development of various liquid crystal terahertz apparatuses.
Exogenous iron redistribution between brain and liver after administering 57Fe3O4 ferrofluid to a rat brain ventricle (2017)

The natural excretion of 57Fe enriched magnetic nanoparticles from a rat’s brain through its blood–brain barrier is studied. Dextran-coated iron oxide nanoparticles are transcranially injected into the rat’s brain ventricle. The injected nanoparticles undergo biotransformation into iron-containing proteins distributed over the brain tissues, while the exogenous iron transported from the brain to other organs is eliminated from the body over time.
Design, analysis and control of a fast nanopositioning stage (2008)

We present a fast flexure-based, piezoelectric stack-actuated XY nanopositioning stage which is suitable for high-speed, accurate nanoscale positioning applications. The performance of the design are analyzed using finite-element-analysis software. Experiments demonstrate that the design has a high first resonant mode at 2.7 kHz, a low cross-coupling of -35 dB and a relatively large traveling range of 25times25 mum. These results are in close agreement with the predicted FEA results. Non-linearities due to hysteresis of the piezoelectric stack actuators are present in the stage. The hysteresis effect is minimized using charge actuation. The Integral Resonant Control (IRC) method is applied to damp the first resonant mode. By implementing feedforward inversion technique, high-speed and accurate scanning performances, up to 400 Hz, are achieved.
Microarray analysis of Shigella flexneri-infected epithelial cells identifies host factors important for apoptosis inhibition (2010)

Infection of epithelial cells with S. flexneri induces a pro-survival state in the cell that results in apoptosis inhibition in the presence and absence of staurosporine. The bacteria may target these host factors directly while some induced genes may represent downstream effects due to the presence of the bacteria. Our results indicate that the bacteria block apoptosis at multiple checkpoints along both pathways so that even if a cell fails to prevent apoptosis at an early step, Shigella will block apoptosis at the level of caspase-3. Apoptosis inhibition is most likely vital to the survival of the bacteria in vivo. Future characterization of these host factors is required to fully understand how S. flexneri inhibits apoptosis in epithelial cells.