gebhart/patrepeval huggingface dataset:
Improvement on Diversity Gain with Filter Bandwidth Enlargement in Fractional Sampling OFDM Receiver (2010)

A diversity scheme with Fractional Sampling (FS) in an OFDM receiver has been investigated recently. Through FS, it is possible to separate multipath components and obtain diversity gain in OFDM systems. Enlargement of the bandwidth of the total frequency response between transmit and receive baseband filters allows the FS scheme to achieve path diversity. However, the transmit filter has to be designed according to the spectrum mask of the wireless standards such as IEEE802.11a/g to avoid interference to the other communication systems and the frequency response of the composite channel including the transmit and receive filters has often been set to minimal bandwidth to eliminate adjacent channel signals. In order to achieve the maximum signal-to-noise ratio (SNR), the same filter is commonly used in the transmitter and the receiver. In this paper, the trade-off among the SNR deterioration, adjacent channel interference, and the diversity gain due to the enlargement of the bandwidth of the receive filter is investigated. Numerical results from computer simulations indicate that the BER performance with wider bandwidth in the receiver shows better performance than that with the minimal bandwidth for maximizing the SNR in certain conditions.
Composition and Antimicrobial Activity of the Essential Oils of Two Origanum Species (2001)

The essential oils obtained from the aerial parts of Origanum scabrum and Origaum microphyllum, both endemic species in Greece, were analyzed by means of GC and GC-MS. Forty-eight constituents were identified, representing 98.59 and 98.66% of the oils, respectively. Carvacrol, terpinen-4-ol, linalool, sabinene, alpha-terpinene, and gamma-terpinene were found as the major components. Furthermore, both samples exhibited a very interesting antimicrobial profile after they were tested against six Gram-negative and -positive bacteria and three pathogenic fungi.
InN/InAlN Multiple Quantum Well Nanocolumns Grown on (111) Si Substrates by RF-Plasma Assisted Molecular Beam Epitaxy (2007)

High In content InxAl1-xN nanocolumns were successfully self- assembled on Si (111) substrates under nitrogen-rich conditions, by rf-plasma assisted molecular beam epitaxy. The InAlN nano-columns (XIn=0.87) were grown at 416 oC, and the room tempera-ture (RT) PL full-width-at-half-maximum (FWHM) was relatively broad at 164 meV. When the AlInN nanocolumns of 1.48mm wavelength (XIn=0.92) were grown at a higher temperature of 463 oC but increasing the V/III ratio, however the RT-PL- FWHM be-came narrower to be 106 meV. InN/In0.77Al0.23N multiple quantum well (MQW) structures of 100 wells were integrated into InAlN nanocolumns, where three such samples with the different InN well widths of 3, 2 and 1 nm were grown. The RT-PL peak wave-length shifted from 1.53 to 1.2 um depending on the well layer thickness. The quantum confinement shift is theoretically analyzed.
Anaesthetic Impairment of Immune Function Is Mediated via GABAA Receptors (2011)

Our results show that functional GABA(A) receptors are present on monocytes with properties similar to CNS GABA(A) receptors. The functional data provide a possible explanation as to why chronic propofol and thiopental administration can increase the risk of infection in critically ill patients: their action on GABA(A) receptors inhibits normal monocyte behaviour. The data also suggest a potential solution: monocyte GABA(A) receptors are insensitive to diazepam, thus the use of benzodiazepines as an alternative anesthetising agent may be advantageous where infection is a life threatening problem.
Comparison between conventional and frit-inlet channels in separation of biopolymers by asymmetric flow field-flow fractionation (2019)

Asymmetric flow field-flow fractionation (AF4) is a separation technique in which a focusing/relaxation step is used after the sample is injected onto the separation channel. During the focusing/relaxation step, the sample is focused by two counter-directed flows. This allows sample components to establish a diffusion-dependent equilibrium concentration profile. The focusing step may, in some cases, cause a loss of sample due to adsorption into the accumulation wall (i.e. the membrane) or due to aggregation of the sample. In addition, the increase in sample concentration during the focusing step may prevent complete relaxation and cause overloading effects. In this study, a modified AF4 channel equipped with a frit inlet (FI-AF4) is utilized, where the sample is relaxed hydrodynamically as it enters to the channel through the frit. The main advantage of the FI-AF4 channel is to omit the focusing step. The FI-AF4 channel could also allow higher injection mass than in a conventional channel while still avoiding overloading. The purpose of the present study is to compare two channels (conventional and FI-AF4 channels) in terms of the plate height (H), resolution (R<sub>s</sub>) and the mass recovery for analysis of a mixture of glycogen and pullulan. In addition, waxy maize (WM) starch was used to compare the mass overloading of the two channels. The results show that the type of relaxation method (i.e. focusing or hydrodynamic relaxation) had no significant effect on mass recovery. The resolution (R<sub>s</sub>), was higher in the conventional AF4 channel than in the FI-AF4 channel for the separation of glycogen and pullulan. The results also show that it was possible to inject a higher mass of WM starch (i.e. twice the mass) onto the FI-AF4 channel, compared to a conventional AF4 channel, without observing an overloading effect.
Monitoring the Formation of Polymer Nanoparticles with Fluorescent Molecular Rotors (2022)

We present an experimental approach to studying the kinetics of polymer nanoparticle formation using molecular rotor molecules as fluorescence probes. By combining fluorescence lifetime analysis and fluorescence correlation spectroscopy, it is possible to simultaneously monitor the evolution of the local environment in the nanoparticles and their size. To assess the generality of the method, we select two common but very different methods for nanoparticle preparation: emulsion-solvent evaporation and miniemulsion polymerization. In both cases, three stages of the nanoparticle formation process were identified on the basis of their polymer content. In the initial stage of the process, the polymer content is low. Then it increases rapidly because of solvent evaporation or polymerization during the second stage. Finally, it reaches a plateau value. Furthermore, significant heterogeneities in the final nanoparticles were found that can be attributed to remaining solvent or monomer and the spatial variation of the polymer-free volume.
Aromatic ionomer membranes: II. Evaluation as separators for advanced alkaline water electrolyzers (1985)

Abstract The sorption and transport properties of newly developed aromatic carboxylate polymers have been investigated in the context of their application as membrane separators for water electrolyzers. Conductance measurements of aromatic carboxylates of various equivalent weights have been performed as a function of current density, temperature, and electrolyte environment. Results have been compared with those for Nafion 117. The sorption results in dilute and concentrated solution show large water and electrolyte uptake for the aromatic carboxylate films. Furthermore, relatively large sodium ion self‐diffusion coefficients have been found in both dilute and concentrated solution environments. The results of these measurements are characteristic of microporous films. The de conductance behavior of the aromatic carboxylate ionomers is quite different from that found for nonporous 1150 equivalent weight Nafion membranes. This difference is caused primarily by the microporous structure of the aromatic carboxylates, which results in large membrane specific conductances.
Magnetic Resonance Imaging Monitors Physiological Changes With Antihedgehog Therapy in Pancreatic Adenocarcinoma Xenograft Model (2008)

Magnetic resonance imaging VVF using magnetic iron oxide nanoparticles may serve as a noninvasive measure of biological response to Shh PDAC therapy with easy translation to the clinic.
Respiration and Parturition Affected by Conditional Overexpression of the Ca 2+ -Activated K + Channel Subunit, SK3 (2000)

In excitable cells, small-conductance Ca2+-activated potassium channels (SK channels) are responsible for the slow after-hyperpolarization that often follows an action potential. Three SK channel subunits have been molecularly characterized. The SK3 gene was targeted by homologous recombination for the insertion of a gene switch that permitted experimental regulation of SK3 expression while retaining normal SK3 promoter function. An absence of SK3 did not present overt phenotypic consequences. However, SK3 overexpression induced abnormal respiratory responses to hypoxia and compromised parturition. Both conditions were corrected by silencing the gene. The results implicate SK3 channels as potential therapeutic targets for disorders such as sleep apnea or sudden infant death syndrome and for regulating uterine contractions during labor.
In Vivo Imaging of Kidney Microcirculation Using Doppler Optical Coherence Tomography (2011)

We demonstrated 3D Doppler optical coherence tomography (DOCT) imaging of rat kidney microcirculation within the glomerulus in vivo. Dynamic changes in blood flow were detected under altered physiological conditions demonstrating real-time DOCT imaging.
Acoustic noise background and sound transmission tests in a slurry line at the HYGAS Pilot Plant (1979)

A State-of-the-Art report on instrumentation needs for coal conversion demonstration plants indicated that acoustic/ultrasonic techniques may be applied to measure two-phase flows found in coal conversion processes. Later theoretical feasibilities studies on the feasibility of acoustic/ultrasonic techniques to measure mass flow in coal conversion process streams were reported. These studies were based on limited theoretical and experimental results found in the literature. In the present work actual experimental results necessary to design a flowmeter for coal/liquid streams are presented. Acoustic data obtained from tests at the low pressure slurry line of the HYGAS char conversion pilot plant are presented. The data consist of the acoustic noise background and the sound transmission loss for the cases of 0, 18, and 33% char by weight in toluene and benzene. Spectra of noise background were scanned from 10 kHz to 1 MHz. Most acoustic energy of the noise background was shown to be below 500 kHz. Isolated acoustic events were also observed; such events represent either the acoustic resonance of the pipe or the resonant response of the transducer. Relative sound transmission losses were measured by the pitch catch pulse mode operation over the frequency range of 100 kHz to 1 MHz. Strong char concentration dependence with attenuation was observed. Results are discussed in terms of the sonar equation to indicate the feasibility of an ultrasonic or acoustic device applied to char conversion processes.
Broadband surface plasmon jets: direct observation of plasmon propagation for application to sensors and optical communications in microscale and nanoscale circuitry (2017)

A system and method for generating and using broadband surface plasmons in a metal film for characterization of analyte on or near the metal film. The surface plasmons interact with the analyte and generate leakage radiation which has spectral features which can be used to inspect, identify and characterize the analyte. The broadband plasmon excitation enables high-bandwidth photonic applications.
Development of a laser glass for the National Ignition Facility (2007)

We review the development of a new glass formulation and manufacturing technology for a neodymium-doped phosphate based laser glass used in the LLNL National Ignition Facility (NIF) and the French Laser MegaJoule (LMJ). The glass development process built on both accumulated experience and the utilization of glass science principles, and the resultant new glass offers superior laser properties in combination with improvements in physical properties to enhance manufacturing yield. Essentially in parallel, a continuous melting production line was also conceived, designed and operated to meet both the schedule and cost targets of the NIF. Prior to 1997, phosphate laser glasses were manufactured by a discontinuous pot-melting process with limited production rate and associated high costs. The continuous melting process met several technical challenges, including producing glass with low residual water content and absence of inclusions which become damage sites when used in the NIF laser system.
Hydrogen adsorption on ultra-fine metal-carbon composite particles (2002)

This is an investigation on the storage of hydrogen at 288∼308 K on ultra-fine particles. We studied the pore structure by nitrogen adsorption at 77 K on thermal-treated ultra-fine particles with CO 2 and pristine ultra-fine particles.
Recognition of Polyfluorinated Compounds Through Self-Aggregation in a Cavity (2014)

Polyfluorinated aliphatic compounds were encapsulated by a self-assembled M6L4 coordination host in aqueous media. NMR titration and X-ray crystallographic analyses clearly revealed that the aggregation of the fluorinated moieties of the guests in the host cavity plays a significant role in the binding. Polyfluorinated aromatics did not show such aggregation in the cavity because of their "nonfluorous" nature.
Aberrantly expressed cytokeratin 1, a tumor-associated autoantigen in papillary thyroid carcinoma (1997)

Papillary thyroid carcinoma (PTC) is a somewhat puzzling disease, combining a propensity to metastasize with an indolent clinical course. The often pronounced T cell-dominated inflammatory infiltrate seen in PTC tumors has prompted us to search for signs of a tumor-induced immune response. In previous studies, we have demonstrated large tumor-specific deposits of IgG and complement in PTC tissue and isolated a putative target antigen. This investigation examines the presence of autoantibodies to cytokeratin 1, a high m.w. cytokeratin normally expressed only in suprabasal keratinocytes, in the serum and tumor tissue of PTC patients. Using immunoprecipitation and Western blot, cytokeratin 1-reactive autoantibodies were demonstrated in 80% of the PTC sera tested, and tumor-derived antibodies were shown to precipitate cytokeratin 1. Using immunohistochemistry, cytokeratins 1 and 10 were found in a large proportion of PTC tumors (39/44) but were absent from normal thyrocytes of most PTC-bearing glands. Our results indicate that this protein is expressed aberrantly in neoplastic cells and is immunogenic in this context.
High security optical tags for automotive/avionics parts anticounterfeiting (2010)

Horus technologies develops novel optical tags based on planar digital micro-optics. These tags are calculated by computer, fabricated as masters via optical microlithography and replicated in mass by plastic embossing. Such tags are composed of several different levels of anti-counterfeating features, ranging from traditional holographic patterns, to OVIDs, to micro-holograms, to machine readable digital holograms storing holographic 1D and 2D bar codes. These tags have a double aim: anti-counterfeating of automotive/avionic parts and providing the engineer using an appropriate tag reader with all the technical information referring to these parts.
TRPV1 Antagonism: From Research to Clinic (2014)

The capsaicin receptor, TRPV1, has been one of the most extensively studied molecules in sensory research. Its contribution to the sensation of pain in numerous pre-clinical inflammatory and neuropathic paradigms has been well-established and expression analysis suggests a potential role clinically in pain and bladder conditions. The field has now reached an exciting point in time with the development of a number of high quality TRPV1 antagonist drug candidates and the release of clinical data. What has become apparent from this work is that inhibition of TRPV1 function brings with it the potential liabilities of increased body temperature and altered thermal perception. However, there is cause for optimism because it appears that not all antagonists have the same properties and compounds can be identified that lack significant on-target side-effects whilst retaining efficacy, at least pre-clinically. What is perhaps now more critical to address is the question of how effective the analgesia provided by a TRPV1 antagonist will be. Although tantalizing clinical data showing effects on experimentally-induced pain or pain following molar extraction have been reported, no clear efficacy in a chronic pain condition has yet been demonstrated making it difficult to perform an accurate risk-benefit analysis for TRPV1 antagonists. Here we provide an overview of some of the most advanced clinical candidates and discuss the approaches being taken to avoid the now well established on-target effects of TRPV1 antagonists.
Nonuniform image representation in area-of-interest systems (1995)

This paper is concerned with image representation by data distributed nonuniformly and in particular with a representation scheme suitable for "area-of-interest" imaging. The class of signals under consideration, whose information density varies with position, can be represented according to a nonuniform sampling scheme. Position-varying projection operators are presented as simple low-pass filtering operations in a Fourier-like domain. Sequential projections are used for pyramidal representation of nonuniformly sampled images. It is shown that irregular random sampling, prevents, under certain mild restrictions, aliasing effects.
Spinocerebellar Ataxia Type 2 (2006)

Spinocerebellar ataxia type 2 (SCA2) is an autosomal dominantly inherited neurodegenerative disease caused by CAG repeat expansion in the first coding exon of the ATXN2 gene. The mutation results in an expanded polyglutamine (polyQ) domain. SCA2 is characterized by progressive ataxia and involves primarily Purkinje cells (PCs) but also other neurological systems. Depending on the length of the CAG repeats, ATXN2 repeat expansions can act as recessive, dominant, or risk alleles (reviewed in Pulst, ). With a focus on work in our group, this chapter describes the characteristics of SCA2 patients and reviews ATXN2 molecular features and animal models as well as progress toward the identification of treatments for SCA2.
Quantitative Replacement of Cetyl Trimethylammonium Bromide by Cationic Thiol Ligands on the Surface of Gold Nanorods and Their Extremely Large Uptake by Cancer Cells (2011)

Stabil und biokompatibel: Die chemische Zusammensetzung von kationischen thiolatgeschützten Nanostäbchen wurde präzise bestimmt. In-vitro-Experimente an Zellkulturen zeigten keine Zytotoxizität dieser Nanostäbchen, und pro Krebszelle wurden mehr als zwei Millionen dieser Stäbchen aufgenommen (siehe Bild).
Regolith Biological Shield for a Lunar Outpost from High Energy Solar Protons (2008)

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Tai T. Pham, Mohamed S. El‐Genk; Regolith Biological Shield for a Lunar Outpost from High Energy Solar Protons. AIP Conf. Proc. 21 January 2008; 969 (1): 474–483. https://doi.org/10.1063/1.2845005 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAIP Publishing PortfolioAIP Conference Proceedings Search Advanced Search |Citation Search
Multi-view action recognition by cross-domain learning (2014)

This paper proposes a novel multi-view human action recognition method by discovering and sharing common knowledge among different video sets captured in multiple viewpoints. To our knowledge, we are the first to treat a specific view as target domain and the others as source domains and consequently formulate the multi-view action recognition into the cross-domain learning framework. First, the classic bag-of-visual word framework is implemented for visual feature extraction in individual viewpoints. Then, we propose a cross-domain learning method with block-wise weighted kernel function matrix to highlight the saliency components and consequently augment the discriminative ability of the model. Extensive experiments are implemented on IXMAS, the popular multi-view action dataset. The experimental results demonstrate that the proposed method can consistently outperform the state of the arts.
Learning-Based Risk-Averse Model Predictive Control for Adaptive Cruise\n Control with Stochastic Driver Models (2020)

We propose a learning-based, distributionally robust model predictive control\napproach towards the design of adaptive cruise control (ACC) systems. We model\nthe preceding vehicle as an autonomous stochastic system, using a hybrid model\nwith continuous dynamics and discrete, Markovian inputs. We estimate the\n(unknown) transition probabilities of this model empirically using observed\nmode transitions and simultaneously determine sets of probability vectors\n(ambiguity sets) around these estimates, that contain the true transition\nprobabilities with high confidence. We then solve a risk-averse optimal control\nproblem that assumes the worst-case distributions in these sets. We furthermore\nderive a robust terminal constraint set and use it to establish recursive\nfeasibility of the resulting MPC scheme. We validate the theoretical results\nand demonstrate desirable properties of the scheme through closed-loop\nsimulations.\n
A Tandem Mass Spectrometry Triplex Assay for the Detection of Fabry, Pompe, and Mucopolysaccharidosis-I (Hurler) (2010)

This method demonstrates that a triplex assay in a single buffer and with minimal supplies and labor can be adapted to a high-throughput newborn screening laboratory for the analysis of Pompe, Fabry, and mucopolysaccharidosis-I (Hurler) diseases.
Sequenced Reactions with Samarium(II) Iodide. Sequential Intermolecular Carbonyl Addition/Intramolecular Nucleophilic Acyl Substitution for the Preparation of Seven-, Eight-, and Nine-Membered Carbocycles (1998)

Samarium(II) iodide has been employed to promote a tandem intermolecular carbonyl addition/intramolecular nucleophilic acyl substitution sequence, generating seven- through nine-membered monocyclic, bicyclic, and tricyclic ring systems with good yields and high diastereoselectivities. This tandem reaction consists of an intermolecular reaction followed by an intramolecular ring expansion that results in a formal [m + n] cycloaddition, starting from extremely simple, readily available substrates. The regioselectivity and stereoselectivity of the process arise from a tuning of the reducing power of samarium(II) iodide with nickel(II) iodide in the first step and irradiation with visible light in the second. By using this method, a variety of structural motifs have been assembled rapidly in good yields.
A new role for vault RNA–TEP1 complexes in mRNA production in trypanosomes (2019)

Vault RNAs, found in vault ribonucleoprotein complexes, are known to be one of many types of small noncoding RNAs (ncRNAs), but their specific function is not known. A new study identifies a small ncRNA from <i>Trypanosome brucei</i> as a vault RNA (vtRNA) based on sequence analysis and its association with the canonical vault component TEP1. Down-regulation of <i>T. brucei</i> vtRNA impairs mRNA splicing in a permeabilized cell system, suggesting new roles for these enigmatic biomolecules.
4’-Fluorouridine is a broad-spectrum orally efficacious antiviral blocking respiratory syncytial virus and SARS-CoV-2 replication (2021)

4'-Fluorouridine is an orally available ribonucleoside analog that efficiently treats RSV and SARS-CoV-2 infections <i>in vivo</i> .