gebhart/patrepeval huggingface dataset:
Statistics of shadowing in indoor radio channels at 900 and 1900 MHz (2003)

The authors describe measurements which were performed to characterize shadowing in indoor radio environments. They investigated the suitability of the log-normal shadowing model for indoor mobile and portable radio channels and determined how the parameters of the log-normal shadowing model are dependent on frequency and topography. They show that the correlation coefficient can be completely independent of wavelength over a frequency octave; however, it is highly dependent on the specific topography of the building. Furthermore, they discuss mechanisms for shadowing which explain why the shadowing component is nearly identical for two frequencies in one environment, while in other environments, the shadowing components at two frequencies are virtually independent.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Adaptive Mechanical Stabilization of a Free-Floating Fully Implantable Hearing Aid (2016)

These results compare favorably with previous studies of a two-piezo transducer with digital feedback control and show the potential for the transducer as a hearing aid for high-frequency hearing loss.
Lithium Hexamethyldisilazide:  A View of Lithium Ion Solvation through a Glass-Bottom Boat (1999)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLithium Hexamethyldisilazide: A View of Lithium Ion Solvation through a Glass-Bottom BoatBrett L. Lucht and David B. CollumView Author Information Department of Chemistry, University of Rhode Island, Kingston, Rhode Island 02881 Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301 Cite this: Acc. Chem. Res. 1999, 32, 12, 1035–1042Publication Date (Web):November 30, 1999Publication History Received18 June 1999Published online30 November 1999Published inissue 1 December 1999https://pubs.acs.org/doi/10.1021/ar960300ehttps://doi.org/10.1021/ar960300eresearch-articleACS PublicationsCopyright © 1999 American Chemical SocietyRequest reuse permissionsArticle Views2012Altmetric-Citations164LEARN 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 SUBJECTS:Ethers,Ligands,Monomers,Oligomers,Solvation Get e-Alerts
Introduction (1986)

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 W. F. Krupke and G. Huber, "Introduction," J. Opt. Soc. Am. B 3, 79-79 (1986) Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
Turbine Blade Entropy Generation Rate: Part I — The Boundary Layer Defined (2000)

The profile loss of a gas turbine blade is normally associated with the entropy increase due to the boundary layer phenomena of viscous shear, Reynolds stress generation and heat transfer. To establish the relative contributions of laminar, transitional and turbulent adiabatic boundary layer flow, to the overall entropy generation (as described in part two of this paper), detailed hot film and hot wire measurements have been made over the suction surface of a turbine blade mounted within a subsonic linear cascade. At a Reynolds number of 185 × 103, a natural transition region was found between 53 and 70% suction surface length, followed by a slowly relaxing turbulent boundary layer. The wall shear stress distribution indicated a peak in the leading edge region, dropping to a minimum value prior to transition, with a sharp rise over the transitional length before decreasing within the turbulent portion. The measurements were compared with predictions obtained from a commercial computational fluid dynamics code, which utilised the renormalisation group theory (RNG) turbulence model.
Theoretical analysis of selection‐based strain improvement for microorganisms with growth dependent upon extracytoplasmic enzymes (2005)

This study analyzes selection in continuous culture as a means to improve the growth of microorganisms dependent upon the expression of extracytoplasmic enzymes. A quantitative, theoretical model was developed that considers increases in enzyme activity and/or expression due to mutation in conjunction with reaction and diffusion at the cell surface and in the surrounding boundary layer. This model was applied to a system consisting of a recombinant yeast cell growing on either soluble or insoluble substrates by virtue of extracytoplasmic enzymes either with or without tethering to the cell surface. Our results indicate that selection of faster-growing cells can be effective, arbitrarily defined as a faster-growing mutant representing 1% of the population in < or =3 months, but only under some conditions. For both soluble and insoluble substrates, tethering of enzymes to the cell surface is required for selection to be effective under the conditions examined. Significant increases in heterologous enzyme expression (2.5-fold for mutants as compared to the parent strain) are also required. In the soluble substrate/enzyme tethered case, the value of k(S) must also be low in order for selection to be effective. Cells growing on non-native substrates by virtue of extracytoplasmic enzyme production are expected to experience selective pressure in response to several additional factors, including cell shape, distance of the cell-substrate gap, properties of the gap, and perhaps mutation frequency. However, these factors exert a smaller impact on selection time and it is not clear that favorable values for these factors are required in order for selection to be effective.
Ten-Section Systems, Omaha Kinship, and Dispersed Alliance Among the Ancient Chinese [and Comments and Reply] (1983)

This paper attempts to establish a structural relationship between the kinship regimes of the Shang (1766-1122 B.C.) and Eastern Chou (770-221 B.C.) dynasties of ancient China as they have been described in the works of P. H. Liu and Y. F. Ruey respectively. At present, the findings of Liu and Ruey stand as isolated analyses of the kinship regimes of two dynasties separated in time by some 500-600 years. Recognition of the structural relation between them not only lends credence to the arguments of both anthropologists, but also reveals a fairly clear instance of transition between elementary and complex structures of kinship. This finding is seen to have important implications for appreciating ancient Chinese historiography in a new light as well as for revising Levi-Strauss's grand theorizing concerning the spatial distribution of systems of generalized and restricted exchange.
Compact Full Duplex MIMO Radios in D2D Underlaid Cellular Networks: From System Design to Prototype Results (2016)

This paper considers the implementation and application possibilities of a compact full duplex multiple-input multiple-output (MIMO) architecture where direct communication exists between users, e.g., device-to-device (D2D) and cellular link coexisting on the same spectrum. For the architecture of the compact full duplex radio, we combine an analog self-interference canceler based dual-polarization with high cross-polarization discrimination (XPD) and Long Term Evolution (LTE)-based per-subcarrier digital self-interference canceler. While we consider the compactness and power efficiency of an analog solution, we focus on the digital canceler design with robustness to a frequency-selective channel and high compatibility with a conventional LTE system. For an over-the-air wireless experiment of full duplex testbed with a two-user-pair, we implement a full duplex MIMO physical layer (PHY), supporting 20 MHz bandwidth, on an FPGA-based software-defined radio platform. Further, we propose a novel timing synchronization method to construct a more viable full duplex MIMO link. By having the full duplex link prototype fully operating in real-time, we present the first characterization of the proposed compact full duplex MIMO performance depending on the transmit power of the full duplex node. We also show the link quality between nodes. One of the crucial insights of this work is that the full duplex operation of a user is capable of acquiring the throughput gain if the user has self-interference capability with guaranteed performance.
The Epstein-Barr Virus (EBV) major envelope glycoprotein gp350/220-specific antibody reactivities in the sera of patients with different EBV-associated diseases (1998)

gp350 of Epstein-Barr virus (EBV) induces a strong immune response in EBV-infected individuals, but relatively little is known about the clinical relevance of this response in patients with different EBV-associated malignancies and other diseases. Using our gp350-expressing cell clones, we studied gp350-specific humoral immune responses in the sera of individuals with nasopharyngeal carcinoma (NPC), chronic symptomatic EBV infection (CEI), Hodgkin's disease (HD), acute infectious mononucleosis (IM) and healthy EBV-seropositive individuals (HI). The titres of antibody-dependent cellular cytotoxicity (ADCC) antibodies were highest in HI followed by CEI, HD and NPC. EBV-neutralizing (NA) and gp350-specific IgG antibody profiles in these conditions were: CEI > HI > NPC > HD, whereas IgA titres were the highest in NPC sera followed by CEI and HD. The sera from IM patients were found to be negative for gp350-specific ADCC and IgA activities. Sera from HI were also negative for gp350-specific IgA. A significant positive correlation was found between serum gp350 IgA and viral capsid antigen IgA and a significant negative one between IgM and ADCC titres. High IgA titres were also found in CEI and EBV-genome positive HD in addition to NPC. Importantly, gp350-specific IgA titres were of prognostic value in NPC patients. Our data provide new insights about the clinical relevance of gp350-specific immune responses in these diseases.
Structure and spectroscopic properties of the dimeric copper(I) N-heterocyclic carbene complex [Cu2(CNCt-Bu)2](PF6)2 (2015)

In recent years, the use of copper N-heterocyclic carbene (NHC) complexes has expanded to fields besides catalysis, namely medicinal chemistry and luminescence applications. In the latter case, multinuclear copper NHC compounds have attracted interest, however, the number of these complexes in the literature is still quite limited. Bis[μ-1,3-bis(3-tert-butylimidazolin-2-yliden-1-yl)pyridine]-1κ(4)C(2),N:N,C(2');2κ(4)C(2),N:N,C(2')-dicopper(I) bis(hexafluoridophosphate), [Cu2(C19H25N5)2](PF6)2, is a dimeric copper(I) complex bridged by two CNC, i.e. bis(N-heterocyclic carbene)pyridine, ligands. Each Cu(I) atom is almost linearly coordinated by two NHC ligands and interactions are observed between the pyridine N atoms and the metal centres, while no cuprophilic interactions were observed. Very strong absorption bands are evident in the UV-Vis spectrum at 236 and 274 nm, and an emission band is observed at 450 nm. The reported complex is a new example of a multinuclear copper NHC complex and a member of a compound class which has only rarely been reported.
Optical-optical double resonance photoionization spectroscopy of nf Rydberg states of nitric oxide (2004)

The spectra of vibrationally excited nf Rydberg states of nitric oxide were recorded by monitoring the photoion current produced using two-photon double resonance excitation via the NO A (2)Sigma(+) state followed by photoexcitation of the Rydberg state that undergoes autoionization. The optical transition intensities from NO A state to nf Rydberg states were calculated, and the results agree closely with experiment. These results combined with circular dichroism measurements allow us to assign rotational quantum numbers to the nf Rydberg states even in a spectrum of relatively low resolution. We report the positions of these nf (upsilon,N,N(c)) Rydberg levels converging to the NO X (1)Sigma(+) upsilon(+) = 1 and 2 ionization limits where N is the total angular momentum excluding electron and nuclear spin and N(c) represents the rotational quantum number of the ion core. Our two-color optical-optical double resonance measurements cover the range of N from 15 to 28, N(c) from 14 to 29, and the principal quantum number n from 9 to 21. The electrostatic interaction between the Rydberg electron and the ion core is used to account for the rotational fine structure and a corresponding model is used to fit the energy levels to obtain the quadrupole moment and polarizability of the NO(+) core. Comparison with a multichannel quantum defect theory fit to the same data confirms that the model we use for the electrostatic interaction between the nf Rydberg electron and the ion core of NO well describes the rotational fine structure.
A Key Regulatory Role of the Transcription Factor NFATc2 in Bronchial Adenocarcinoma via CD8+ T Lymphocytes (2009)

The Ca(2+)-regulated calcineurin/nuclear factor of activated T cells (NFAT) cascade controls alternative pathways of T-cell activation and peripheral tolerance. Here, we describe reduction of NFATc2 mRNA expression in the lungs of patients with bronchial adenocarcinoma. In a murine model of bronchoalveolar adenocarcinoma, mice lacking NFATc2 developed more and larger solid tumors than wild-type littermates. The extent of central tumor necrosis was decreased in the tumors in NFATc2((-/-)) mice, and this finding was associated with reduced tumor necrosis factor-alpha and interleukin-2 (IL-2) production by CD8(+) T cells. Adoptive transfer of CD8(+) T cells of NFATc2((-/-)) mice induced transforming growth factor-beta(1) in the airways of recipient mice, thus supporting CD4(+)CD25(+)Foxp-3(+)glucocorticoid-induced tumor necrosis factor receptor (GITR)(+) regulatory T (T(reg)) cell survival. Finally, engagement of GITR in NFATc2((-/-)) mice induced IFN-gamma levels in the airways, reversed the suppression by T(reg) cells, and costimulated effector CD4(+)CD25(+) (IL-2Ralpha) and memory CD4(+)CD127(+) (IL-7Ralpha) T cells, resulting in abrogation of carcinoma progression. Agonistic signaling through GITR, in the absence of NFATc2, thus emerges as a novel possible strategy for the treatment of human bronchial adenocarcinoma in the absence of NFATc2 by enhancing IL-2Ralpha(+) effector and IL-7Ralpha(+) memory-expressing T cells.
Reaction of Triethyl Phosphonoacetate Anion with Phenylhydrazones: A New Method for the Preparation of 3(2H)-Pyridazinones (1991)

Abstract Various 5,6-disubstituted-2-phenyl-3(2H)-pyridazinones 4 have been synthesised by reacting triethyl phosphonoacetate anion with monophenylhydrazone of 1,2-dicarbonyl compounds 2.
Rhodopsin Reconstituted into a Planar-Supported Lipid Bilayer Retains Photoactivity after Cross-Linking Polymerization of Lipid Monomers (2005)

Transmembrane proteins (TMPs), particularly ion channels and receptors, play key roles in transport and signal transduction. Many of these proteins are pharmacologically important and therefore targets for drug discovery. TMPs can be reconstituted in planar-supported lipid bilayers (PSLBs), which has led to development of TMP-based biosensors and biochips. However, PSLBs composed of natural lipids lack the high stability desired for many technological applications. One strategy is to use synthetic lipid monomers that can be polymerized to form robust bilayers. A key question is how lipid polymerization affects TMP structure and activity. In this study, we have examined the effects of UV polymerization of bis-Sorbylphosphatidylcholine (bis-SorbPC) on the photoactivation of reconstituted bovine rhodopsin (Rho), a model G-protein-coupled receptor. Plasmon-waveguide resonance spectroscopy (PWR) was used to compare the degree of Rho incorporation and activation in fluid and poly(lipid) PSLBs. The results show that reconstitution of Rho into a supported lipid bilayer composed only of bis-SorbPC, followed by photoinduced lipid cross-linking, does not measurably diminish protein function.
Synthesis and High Alkaline Chemical Stability of Polyionic Liquids with Methylpyrrolidinium, Methylpiperidinium, Methylazepanium, Methylazocanium, and Methylazonanium Cations (2019)

Herein, we present the synthesis of five styrene-based poly(ionic liquids) (PILs) containing (covalently linked) saturated <i>N</i>-heterocyclic cations with various ring sizes (i.e., methylpyrrolidinium, methylpiperidinium, methylazepanium, methylazocanium, and methylazonanium). High alkaline chemical stability was confirmed by <sup>1</sup>H NMR spectroscopy after 4 weeks in 40 mol equiv of KOH (1.0 M KOH in D<sub>2</sub>O) at 80 °C for PILs with 5-, 6-, 7-, and 8-membered ring cations; a requirement for polymer electrolyte separators in long-lasting alkaline fuel cells. Additionally, ion conductivity of PILs increased by 4 orders of magnitude with increasing water content, where a master percolation power law curve was observed, that is, similar conductivity versus water volume fraction for all PILs, regardless of cation size.
Older versus younger adults with gastric cancer receiving perioperative treatment: Results from the CRITICS trial (2020)

ClinicalTrials.gov identifier: NCT00407186. EudraCT number: 2006-00413032.
Optimal design of a 5kW/dm<sup>3</sup> / 98.3% efficient TCM resonant transition single-phase PFC rectifier (2010)

In many applications single-phase PFC rectifiers should meet the demand for a high efficiency and a high power density at the same time. Depending on the weighting of these two design criteria, different topologies could be advantageous. As has been shown, with bridgeless PFC rectifiers an ultra high efficiency of 99.3% or a high power density of 5.6kW/dm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> could be realised. However, due to the hard switching operation it is not possible to achieve an exceptional efficiency and power density at the same time. Furthermore, SiC Schottky diodes are required for highly compact or highly efficient systems. Therefore, a triangular current mode (TCM), resonant-transition single phase PFC rectifier concept is presented in this paper, which overcomes both limitations. Besides a design procedure for optimising the chip area, also a simple and robust control concept, where a novel zero crossing detection concept is included, is explained and a prototype system as well as measurement results are presented for validating the concept and the design procedure.
Performance of photon reconstruction and identification with the CMS detector in proton-proton collisions at √s= 8 TeV (2015)

A description is provided of the performance of the CMS detector for photon reconstruction and identification in proton-proton collisions at a centre-of-mass energy of 8 TeV at the CERN LHC. Details are given on the reconstruction of photons from energy deposits in the electromagnetic calorimeter (ECAL) and the extraction of photon energy estimates. The reconstruction of electron tracks from photons that convert to electrons in the CMS tracker is also described, as is the optimization of the photon energy reconstruction and its accurate modelling in simulation, in the analysis of the Higgs boson decay into two photons. In the barrel section of the ECAL, an energy resolution of about 1% is achieved for unconverted or late-converting photonsfrom H→γγ decays. Different photon identification methods are discussed and their corresponding selection efficiencies in data are compared with those found in simulated events.
Polymer Composite with Carbon Nanofibers Aligned during Thermal Drawing as a Microelectrode for Chronic Neural Interfaces (2017)

Microelectrodes provide a direct pathway to investigate brain activities electrically from the external world, which has advanced our fundamental understanding of brain functions and has been utilized for rehabilitative applications as brain-machine interfaces. However, minimizing the tissue response and prolonging the functional durations of these devices remain challenging. Therefore, the development of next-generation microelectrodes as neural interfaces is actively progressing from traditional inorganic materials toward biocompatible and functional organic materials with a miniature footprint, good flexibility, and reasonable robustness. In this study, we developed a miniaturized all polymer-based neural probe with carbon nanofiber (CNF) composites as recording electrodes via the scalable thermal drawing process. We demonstrated that in situ CNF unidirectional alignment can be achieved during the thermal drawing, which contributes to a drastic improvement of electrical conductivity by 2 orders of magnitude compared to a conventional polymer electrode, while still maintaining the mechanical compliance with brain tissues. The resulting neural probe has a miniature footprint, including a recording site with a reduced size comparable to a single neuron and maintained impedance that was able to capture neural activities. Its stable functionality as a chronic implant has been demonstrated with the long-term reliable electrophysiological recording with single-spike resolution and the minimal tissue response over the extended period of implantation in wild-type mice. Technology developed here can be applied to basic chronic electrophysiological studies as well as clinical implementation for neuro-rehabilitative applications.
Vertically Stacked Piezoelectric Transformer for High-Frequency Power Amplifier (2023)

With high power density and quality factor, piezoelectrics have emerged as a promising alternative to replace magnetics. However, piezoelectrics have mostly been explored in the context of dc-dc converter with off-the-shelf piezoelectrics. This paper presents a novel piezoelectric transformer (PT), which is suitable for power amplifier and can easily scale for different conversion ratios. The proposed PT is vertically stacked, with a quartz in the middle for mechanical coupling. Primary and secondary sides of the PT are mounted on two sides of the quartz which eases the scaling for the transformer ratio. A prototype PT is built and tested to verify the proposed structure, with conductive traces additively manufactured using silver paste for high conductivity and rapid prototyping. Finally, the equivalent circuit of PT is modeled and analyzed which agrees both with COMSOL simulation and experimental results. Our prototype has only 6mm×6mm area which has the potential of improving power density by eliminating air-core inductor which is conventionally used in high-frequency power amplifier.