gebhart/patrepeval huggingface dataset:
Surface Phonons Studied by Raman Scattering in GaN Nanostructures (2017)

We study Raman scattering from surface phonon polaritons in regularly arrayed GaN nanowalls and nanocolumns. The surface phonon mode around 705 cm−1 decreases in intensity with increasing wall width w under a constant interval period p = 355 nm in the nanowalls, and it disappears in the film. This suggests that the interaction between them on the adjacent walls works so as to satisfy the selection rule in the film. The Raman peak from the surface phonon polariton in the nanocolumns is much broader than that in the nanowalls. It decreases in intensity and increases in width with decreasing column diameter d, and it is not observed when d = 75 nm. This behavior is discussed in terms of the quantization of the azimuthal wave vector of a surface phonon polariton on the circumference of the columnar structure. The Raman spectrum of the surface phonon polariton in the regularly arrayed GaN nanocolumns is compared with that of the Fröhlich mode in irregularly arrayed ones.
A palmitoyl transferase chemical genetic system to map ZDHHC-specific S -acylation (2023)

Abstract The 23 human ZDHHC S -acyltransferases catalyze long-chain S -acylation at cysteine residues across an extensive network of hundreds of proteins important for normal physiology or dysregulated in disease. Here we present a technology platform to directly map the protein substrates of a specific ZDHHC for the first time at the whole proteome level, in intact cells. Structure-guided engineering of paired ZDHHC ‘hole’ mutants and ‘bumped’ chemically tagged fatty acid probes enabled probe transfer to specific protein substrates with excellent selectivity over wild type ZDHHCs. Chemical genetic systems were exemplified for five ZDHHCs (3, 7, 11, 15 and 20), and applied to generate the first de novo ZDHHC substrate profiles, identifying &gt;300 unique and shared substrates across multiple cell lines and S -acylation sites for novel functionally diverse substrates. We expect that this powerful and versatile platform will open a new window on S -acylation biology for a wide range of models and organisms.
Growth of passivation layer on Co in BTA-H<sub>2</sub>O<sub>2</sub> solutions (2021)

Slurries for chemical mechanical polishing (CMP) are aqueous solutions that contain an abrasive, an oxidant, a complexation reagent, a corrosion inhibitor, and a pH conditioner. In advanced metal CMP, the CMP mechanism proceeds through metal complex layer formation by the oxidizer and complexation reagent, and removal of the metal-complex layer by abrasive friction. H2O2 is commonly used as an oxidant in slurries and benzotriazole (BTA) is a typical corrosion inhibitor. Full understanding of surface chemistry in mixtures of H2O2 and BTA is crucial to develop new slurries as well as advanced planarization processes. The removal Co has been recently acquiring a crucial interest in view of its application to Cu capping and lower level local interconnect, whereas a very limited number of studies have been reported for CMP wet chemistry of Co. In this work, the growth of a passivation layer on Co in aqueous solutions containing a corrosion inhibitor and an oxidation reagent was studied.
Trimming Nanostructured Walls While Fluorinating their Surfaces: A Route to Making and Widening Pores of Nanoporous Materials and Efficient Catalysts (2010)

We report on the synthesis and characterization of highly ordered mesoporous fluorosilicas (OMFs) and nanoporous and corrugated fluorosilica nanospheres which contain 2.4−7.0 wt % F, corresponding to a loading of 1.3−3.7 mmol/g. Synthesis of these materials is carried out from parent mesoporous silicas (MCM-41 and SBA-15) and silica nanospheres under ambient conditions using dilute nonaqueous solutions of triethyloxonium tetrafluoroborate (Et3OBF4). As evidenced by nitrogen physisorption measurements, small angle powder X-ray diffraction (XRD), and transmission electron microscopy (TEM), fluorination of the mesostructures is accomplished with only minor alteration of the materials’ overall order. Detailed compositional analyses before and after fluorination are carried out with the aid of FTIR spectroscopy and X-ray photoelectron spectroscopy (XPS) as well as elemental analysis proving the existence of silicon oxyfluoride species. FTIR studies show the appearance of new absorptions (730−750 cm−1) upon fluorination corresponding to [F6−nSi(OH)n]2−, O4/2SiF species or Si−O−Si stretches altered by the presence of nearby Si−F species as well as general broadening of the Si−O−Si asymmetric stretching region (1000−1200 cm−1). XPS analyses exhibit two distinct F species observed at 690.5 and 687.6 eV corresponding to silicon oxyfluoride (SiOF) and silicon fluoride (SiF), respectively. Surface silanol content is evaluated by 29Si HP-MAS NMR spectroscopy, which shows significant reductions in (Q2+Q3)/Q4 ratios from 1.26, 0.61, and 1.07 to 0.22, 0.38, and 0.61 for SBA-15, trimethylsilyl-capped SBA-15, and MCM-41 mesoporous silicas, respectively, because of the formation of (SiO3)SiF or pentacoordinated (SiO4)SiF species. The as-described synthetic procedure is also applied to sulfonic acid (−SO3H)-functionalized SBA-15. Enhancement of the acid-catalyzed ring opening of styrene oxide by aniline to produce the corresponding β-aminoalcohol by the fluorinated materials is presented. Ring opening of styrene oxide by aniline at room temperature after 4 h using −SO3H functionalized SBA-15 result in 77% conversion, whereas the as-synthesized OMF and OMF-SO3H materials exhibit 79% and 87% conversions, respectively. Fluorination of silica nanospheres with Et3OBF4 under similar conditions also produces etched nanoporous fluorosilica nanospheres with different degrees of exfoliation depending on the fluorination temperature.
Re: Collective and Single Cell Behavior in Epithelial Contact Inhibition (2012)

No AccessJournal of UrologyInvestigative Urology1 Oct 2012Re: Collective and Single Cell Behavior in Epithelial Contact Inhibition Anthony AtalaM.D. Anthony AtalaAnthony Atala More articles by this author View All Author Informationhttps://doi.org/10.1016/j.juro.2012.06.073AboutFull TextPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail "Re: Collective and Single Cell Behavior in Epithelial Contact Inhibition." The Journal of Urology, 188(4), pp. 1396–1397 © 2012 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 188Issue 4October 2012Page: 1396-1397 Advertisement Copyright & Permissions© 2012 by American Urological Association Education and Research, Inc.MetricsAuthor Information Anthony Atala More articles by this author Expand All Advertisement PDF downloadLoading ...
VisualEPG: Informing the TV Experience with Web Metadata (2007)

Video can increasingly be watched from Internet streamed, downloaded and recorded sources in addition to live broadcast television. The quantity and heterogeneity of these often long-tail video sources are likely to spur the creation of new methods to browse and consume video. In addition, as television advertising moves closer to the Web model of targeted advertising, an interactive television experience that integrates both kinds of content in an open way is required. In particular, users can now move between watching video and browsing the Web. These two media experiences can be made synergistic if we think of Web content as informing the video experience and vice versa. We illustrate this idea with a system for browsing live HDTV based on Web metadata and suggest it as a basis for a combined system for viewing both diverse video sources and related Web content.
On-chip fluorescence excitation and collection by focusing grating couplers (2016)

Fluorescence detection is a commonly used technique to detect particles. Microscopes are used for the fluorescence detection of the micro-particles. However, the conventional microscopes are bulky. It is cumbersome to integrate all the equipment used for detection in one setup. They can be replaced by photonic chips for the detection of micro-particles such as cells. Most of the biological detection techniques require the utilization of the visible range of the spectrum. SiN as a waveguide material stands out for biological applications due to its transparency in the visible spectrum. Specifically designed grating couplers can be exploited to focus from inside SiN waveguides at a designated location above the chip. Those SiN focusing grating couplers can mimic microscope objectives for on-chip biological detection applications such as fluorescence and Raman spectroscopy. In this report, we present a 2D SiN focusing grating coupler. We study the effect of the grating design on the focus properties of visible light using finite-difference time-domain simulations.
Single-strand and double-strand deoxyribonucleic acid breaks produced by several bleomycin analogs (1981)

Production of single-strand breaks (ssb) and double-strand breaks (dsb) of PM2 phage DNA by several structurally related bleomycin (BLM) analogues was studied by gel electrophoresis. BLM A2 and BLM B2 produced a comparable extent of dsb. In various experiments, BLM A2 and BLM B2, at 22-41 ng/mL, degraded 50% of the form I DNA into 33-38% form II and 12-17% form III DNA. BLM B1' produced ssb and dsb at a ratio similar to that of BLM A2, but both at a rate less than half that of BLM A2. Phleomycin (PLM) D1 induced an equivalent amount of ssb but only one-eighth of dsb induced by BLM B2. The relatively lower extent dsb production for PLM D1 was observed either in borate buffer (pH 9.5) or in Tris-HCl buffer (pH 7.5) and in the presence or absence of exogenous Fe(II). Deamido-BLM A2 produced ssb to an extent approximately half that of BLM A2 and dsb to less than one-eighth that of BLM A2. The following conclusions were drawn. (1) BLM analogues produced ssb and dsb to different extents and ratios. (2) The ratio of dsb to ssb varied depending on the analogue, indicating a lack of a direct correlation between ssb and dsb. (3) The extent of ssb and dsb was affected by modifications on both the C- and N-terminal half-molecules of BLM: modification of either the N-terminal amide or the bithiazole greatly reduced dsb, whereas changes in structure or charge in the C-terminal amine affected ssb and dsb to a similar extent.
Immune recognition of AIDS virus antigens by human and murine cytotoxic T lymphocytes. (1988)

The CTL response to HIV was analyzed in humans and in mice. By using a novel and strictly autologous lymphocyte culture system, human CTL lines were established with PBL from seropositive asymptomatic donors and from patients suffering from AIDS or presenting AIDS-related complex. CTL from HLA-A2 donors recognize and kill murine P815 mastocytoma cells doubly transfected with the human HLA-A2 gene and the HIV env gene; they also kill HLA-compatible human macrophages infected with HIV. CTL specific for the HIV env Ag were also generated in BALB/c mice by immunization with syngeneic murine cells transfected with the HIV env gene. Human and murine HIV-immune CTL populations belong to the CD8 subset of T lymphocytes and are restricted by class I HLA or H-2 transplantation Ag, respectively, in the recognition of HIV env Ag. The two different experimental systems presented here can be used to study CD8 lymphocyte immunity against HIV. The murine model of CTL immunity offers the additional advantage of avoiding the manipulation of infectious virus isolates.
Racial Differences in the Outcome of Left Ventricular Dysfunction (1999)

Blacks with mild-to-moderate left ventricular systolic dysfunction appear to be at higher risk for progression of heart failure and death from any cause than similarly treated whites. These results suggest that there may be racial differences in the outcome of asymptomatic and symptomatic left ventricular systolic dysfunction.
Surveillance of avian influenza viruses in Papua New Guinean poultry, June 2011 to April 2012 (2013)

We investigated the circulation of avian influenza viruses in poultry populations throughout Papua New Guinea to assess the risk to the poultry industry and human health. Oropharyngeal swabs, cloacal swabs and serum were collected from 537 poultry from 14 provinces of Papua New Guinea over an 11-month period (June 2011 through April 2012). Virological and serological investigations were undertaken to determine the prevalence of avian influenza viruses. Neither influenza A viruses nor antibodies were detected in any of the samples. This study demonstrated that avian influenza viruses were not circulating at detectable levels in poultry populations in Papua New Guinea during the sampling period. However, avian influenza remains a significant risk to Papua New Guinea due to the close proximity of countries having previously reported highly pathogenic avian influenza viruses and the low biosecurity precautions associated with the rearing of most poultry populations in the country.
miR−21 and NT-proBNP Correlate with Echocardiographic Parameters of Atrial Dysfunction and Predict Atrial Fibrillation (2020)

This study aimed to investigate the association of circulating biomarkers with echocardiographic parameters of atrial remodelling and their potential for predicting atrial fibrillation (AF). In patients with and without AF (<i>n</i> = 21 and <i>n</i> = 60) the following serum biomarkers were determined: soluble ST2 (sST2), Galectin-3 (Gal-3), N-terminal pro-brain natriuretic peptide (NT-proBNP), microRNA (miR)-21, -29a, -133a, -146b and -328. Comprehensive transthoracic echocardiography was performed in all participants. Biomarkers were significantly altered in patients with AF. The echocardiographic parameter septal PA-TDI, indicating left atrial (LA) remodelling, correlated with concentrations of sST2 (r = 0.249, <i>p</i> = 0.048), miR-21 (r = -0.277, <i>p</i> = 0.012), miR-29a (r = -0.269, <i>p</i> = 0.015), miR-146b (r = -0.319, <i>p</i> = 0.004) and miR-328 (r = -0.296, <i>p</i> = 0.008). In particular, NT-proBNP showed a strong correlation with echocardiographic markers of LA remodelling and dysfunction (septal PA-TDI: r = 0.444, <i>p</i> < 0.001, LAVI/a': r = 0.457, <i>p</i> = 0.001, SRa: r = 0.581, <i>p</i> < 0.001). Multivariate Cox regressions analysis highlighted miR-21 and NT-proBNP as predictive markers for AF (miR-21: hazard ratio (HR) 0.16; 95% confidence interval (CI) 0.04-0.7, <i>p</i> = 0.009; NT-proBNP: HR 1.002 95%CI 1.001-1.004, <i>p</i> = 0.006). Combination of NT-proBNP and miR-21 had the best accuracy to discriminate patients with AF from those without AF (area under the curve (AUC)= 0.843). Our findings indicate that miR-21 and NT-proBNP correlate with echocardiographic parameters of atrial remodeling and predict AF, in particular if combined.
Fine gate TFT circuits fabricated with a new printing technology (2002)

Fine-gate polysilicon thin-film transistors (TFTs) and TFT circuits for large-area electronics have been successfully fabricated with a new printing technology. Electric characteristics for an experimental 3- mu m-gate n-channel TFT are comparable to those for conventional TFTs. A 5- mu m design-rule NMOS shift register and 8*8 liquid crystal display (LCD) operations have also been achieved. The printing technology can delineate patterns fine enough to produce large-area high-resolution TFT-LCDs without using an optical mask aligner.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
Electrostatic Effects Accelerate Decatungstate-Catalyzed C–H Fluorination Using [18F]- and [19F]NFSI in Small Molecules and Peptide Mimics (2019)

The site-selective fluorination of unactivated C(sp3)-H bonds provides unique opportunities to rapidly alter drug properties or generate radiotracers for positron emission tomography (PET) imaging. Toward this goal, photoactivated decatungstate (DT) is capable of generating carbon radicals through hydrogen atom transfer that subsequently undergo fluorination by reaction with N-fluorobenzenesulfonimide (NFSI) or [18F]NFSI. This process enables C(sp3)-H fluorination of a wide range of aliphatic compounds, though reaction rates can be highly variable and limit applications in radiotracer synthesis. Here, we demonstrate that cationic ammonium functions in aliphatic molecules promote formation of a precursor complex with DT that significantly increases the rate of C–H abstraction. The general utility of this rate-accelerating electrostatic effect is demonstrated on more than 30 ammonium-containing molecules, including amino acids, heterocycles, and pseudopeptides. Moreover, this effect is highlighted in the rapid production of [18F]Glu-U-FHLeu, a 18F-labeled prostate specific membrane antigen (PSMA)-binding ligand.
SMOS instrument calibration and level-1 processor performance after 10 years in orbit (2020)

16th Specialist Meeting on on Microwave Radiometry and Remote Sensing of the Environment, 16-20 November 2020
Caracterização e montagem de um sensor de ressonância de plasmon de superfície (SPR) (2016)

Este trabalho apresenta a caracterizacao, projeto e estudo de um sensor de ressonância de plasmon de superficie (SPR) usando tecnica de reflexao total atenuada (ATR ? atenuated total reflection) para verificacao e quantificacao da existencia de uma certa substância em um meio, que pode ser um liquido ou gasoso. Para esta interpretacao e necessaria a existencia de uma sensibilidade minima no sistema, que pode ser afetada pela interacao inadequada do meio com o sensor SPR ou por um erro na montagem que nao excite a superficie do sensor plasmonico. Este trabalho consiste no estudo em cima das formas apropriadas de acoplamentos do meio com a superficie do sensor plasmonico aplicando a tecnica de microfluidica e a aquisicao dos dados em uma plataforma de prototipagem eletronica, enfatizando os calculos e analises para ocorrer a excitacao adequada do sensor. O sistema final apresente o limite de deteccao em torno de ?9,89×10?^(-4), demonstrando ser adequado para a aplicacao proposta: deteccao de agua em etanol para controle de combustiveis. 
Abstract
1.2 Pb/s Throughput Transmission Using a 160 $\mu$m Cladding, 4-Core, 3-Mode Fiber (2019)

This paper extends a recent demonstration of 1.2 Pb/s transmission using a few-mode multi-core fiber with a cladding diameter of 160 μm. The fiber was a 3.37 km, 4-core, 3-mode few-mode multi-core fiber with spatial multiplexing and demultiplexing performed with especially designed mode-selective couplers. We transmitted 368 wavelength division multiplexed spatial super channels across the C and L bands. We selected polarization-division-multiplexed-256-quadrature amplitude modulation format to maximize the generalized mutual information of the transmitted signals, which were decoded using punctured soft-decision forward error correction with a code rate granularity of 0.01. The maximum crosstalk of the system was -31 dB between LP <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">11</sub> modes of adjacent cores, leading to a Q-factor penalty of approximately 0.5 dB. We estimated the system mode-dependent loss values ranging from 3 dB to 5 dB across C and L bands with negligible wavelength dependence.
SILDENAFIL CITRATE INHIBITS SUPEROXIDE FORMATION AND RESTORES ENDOTHELIAL FUNCTION IN A MOUSE MODEL OF SECOND-HAND SMOKE INDUCED ERECTILE DYSFUNCTION (2008)

You have accessJournal of Urology1 Apr 2008SILDENAFIL CITRATE INHIBITS SUPEROXIDE FORMATION AND RESTORES ENDOTHELIAL FUNCTION IN A MOUSE MODEL OF SECOND-HAND SMOKE INDUCED ERECTILE DYSFUNCTION Trinity J Bivalacqua, Travis D Strong, Thomas Sussan, Shyman Biswal, Arthur L Burnett, and Hunter C Champion Trinity J BivalacquaTrinity J Bivalacqua More articles by this author , Travis D StrongTravis D Strong More articles by this author , Thomas SussanThomas Sussan More articles by this author , Shyman BiswalShyman Biswal More articles by this author , Arthur L BurnettArthur L Burnett More articles by this author , and Hunter C ChampionHunter C Champion More articles by this author View All Author Informationhttps://doi.org/10.1016/S0022-5347(08)60990-8AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail "SILDENAFIL CITRATE INHIBITS SUPEROXIDE FORMATION AND RESTORES ENDOTHELIAL FUNCTION IN A MOUSE MODEL OF SECOND-HAND SMOKE INDUCED ERECTILE DYSFUNCTION." The Journal of Urology, 179(4S), p. 338 © 2008 by American Urological AssociationFiguresReferencesRelatedDetails Volume 179Issue 4SApril 2008Page: 338 Advertisement Copyright & Permissions© 2008 by American Urological AssociationMetricsAuthor Information Trinity J Bivalacqua More articles by this author Travis D Strong More articles by this author Thomas Sussan More articles by this author Shyman Biswal More articles by this author Arthur L Burnett More articles by this author Hunter C Champion More articles by this author Expand All Advertisement PDF downloadLoading ...
Solution to the Surface Registration Problem Using X-Ray Standing Waves (1982)

Standing waves of x rays have been used to determine the positions of bromine atoms in submonolayer coverages on a (111) silicon surface. In addition to the bromine position normal to the crystal surface its components relative to a plane inclined to the surface are also measured. This information suffices to establish the registration of the surface atoms relative to the crystal below.
Role of the polypeptide backbone and post-translational modifications in cross-reactivity of Art v 1, the major mugwort pollen allergen (2009)

Artemisia vulgaris (mugwort) is one of the main causes of late summer pollinosis in Europe, with >95% of patients sensitized to the glycoallergen Art v 1. Despite the importance of this allergen, little is known about its cross-reactive behavior. Here we investigated the occurrence of conserved Art v 1 antigenic determinants in sources known to display clinically relevant cross-reactivity with mugwort pollen. For this purpose, monoclonal antibodies specific for a cysteine-stabilized epitope of the Art v 1 defensin domain and for carbohydrates attached to the proline domain were produced by hybridoma and phage display technologies. Using polyclonal Art v 1-specific rabbit sera and antibodies against both the Art v 1 carbohydrate and polypeptide moieties, we could identify cross-reactive structures in pollen from botanically related Asteraceae weeds (Artemisia absinthium, Helianthus annuus and Ambrosia sp.). Homologous allergens were also recognized by IgE from mugwort-sensitized patients and the reactivity could be decreased by serum pre-incubation with natural and recombinant Art v 1. As no cross-reactive structures could be found in foods associated with mugwort pollinosis, we conclude that Art v 1 is poorly involved in mugwort cross-reactivity to food allergens.
Optical, dosimetric, and scintillation properties of pure sapphire crystals (2014)

Optical, dosimetric, and scintillation properties of undoped sapphire (Al 2 O 3 ) single crystals fabricated by different methods of the Czochralski (Cz) and the Bridgman were investigated. In X-ray induced radioluminescence spectra, they showed emission peaks at 240 and 300 nm due to exciton and F + centers, respectively. Scintillation decay times of F + center was fast around few ns. As a dosimetric property, from 0.01 to 2 Gy X-ray was exposed to them and they exhibited a thermally stimulated luminescence (TSL) with a good linearity. The glow peaks of them were similar, 150, 250, and 325 °C. In TSL, the Bridgeman sample represented only F + -center emission while the Cz sample showed F at 400 nm and F + at 300 nm centers emission.