gebhart/patrepeval huggingface dataset:
Investigations on laser-fired contacts for passivated rear solar cells (2002)

Scope of this work was to investigate the properties of 'laser-fired contacts (LFC)', a technique developed at Fraunhofer ISE for implementing the point or line contact pattern of passivated rear silicon solar cells. Prior to cell processing test structures have been used to optimize the laser process. The solar cell results achieved using this optimized process on 0.5 /spl Omega/cm and 2.0 /spl Omega/cm 250 /spl mu/m thick float zone wafers clearly indicate that a local back surface field is generated by laser alloying aluminum into the silicon. In comparison to photolithographically processed references with ohmic point contacts the LFC cells on 2 /spl Omega/cm material show on average a 17 mV higher open circuit voltage and more than 3% higher fill factor. In addition to cell processing, LBIC measurements have been performed in order to control and to illustrate the laser-fired local aluminum back surface field.
Fabrication of resonant patterns using thermal nano-imprint lithography for thin-film photovoltaic applications (2013)

A single-step, low-cost fabrication method to generate resonant nano-grating patterns on poly-methyl-methacrylate (PMMA; plexiglas) substrates using thermal nano-imprint lithography is reported. A guided-mode resonant structure is obtained by subsequent deposition of thin films of transparent conductive oxide and amorphous silicon on the imprinted area. Referenced to equivalent planar structures, around 25% and 45% integrated optical absorbance enhancement is observed over the 450-nm to 900-nm wavelength range in one- and two-dimensional patterned samples, respectively. The fabricated elements provided have 300-nm periods. Thermally imprinted thermoplastic substrates hold potential for low-cost fabrication of nano-patterned thin-film solar cells for efficient light management.
Synthesis and Binding of Mannose‐Specific Synthetic Carbohydrate Receptors (2020)

Synthetic carbohydrate receptors (SCRs) that selectively recognize cell-surface glycans could be used for detection, drug delivery, or as therapeutics. Here we report the synthesis of seven new C<sub>2h</sub> symmetric tetrapodal SCRs. The structures of these SCRs possess a conserved biaryl core, and they vary in the four heterocyclic binding groups that are linked to the biaryl core via secondary amines. Supramolecular association between these SCRs and five biologically relevant C<sup>1</sup> -O-octyloxy glycans, α/β-glucoside (α/β-Glc), α/β-mannoside (α/β-Man), and β-galactoside (β-Gal), was studied by mass spectrometry, <sup>1</sup> H NMR titrations, and molecular modeling. These studies revealed that selectivity can be achieved in these tetrapodal SCRs by varying the heterocyclic binding group. We found that SCR017 (3-pyrrole), SCR021 (3-pyridine), and SCR022 (2-phenol) bind only to β-Glc. SCR019 (3-indole) binds only to β-Man. SCR020 (2-pyridine) binds β-Man and α-Man with a preference to the latter. SCR018 (2-indole) binds α-Man and β-Gal with a preference to the former. The glycan guests bound within their SCR hosts in one of three supramolecular geometries: center-parallel, center-perpendicular, and off-center. Many host-guest combinations formed higher stoichiometry complexes, 2:1 glycan⋅SCR or 1:2 glycan⋅SCR, where the former are driven by positive allosteric cooperativity induced by glycan-glycan contacts.
Oxidative damage to 5-methylcytosine in DNA (1995)

Exposure of pyrimidines of DNA to ionizing radiation under aerobic conditions or oxidizing agents results in attack on the 5,6 double bond of the pyrimidine ring or on the exocyclic 5-methyl group. The primary product of oxidation of the 5,6 double bond of thymine is thymine glycol, while oxidation of the 5-methyl group yields 5-hydroxymethyluracil. Oxidation of the 5,6 double bond of cytosine yields cytosine glycol, which decomposes to 5-hydroxycytosine, 5-hydroxyuracil and uracil glycol, all of which are repaired in DNA by Escherichia coli endonuclease III. We now describe the products of oxidation of 5-methylcytosine in DNA. Poly(dG-[3H]dmC) was gamma-irradiated or oxidized with hydrogen peroxide in the presence of Fe3+ and ascorbic acid. The oxidized co-polymer was incubated with endonuclease III or 5-hydroxymethyluracil-DNA glycosylase, to determine whether repairable products were formed, or digested to 2'-deoxyribonucleosides, to determine the total complement of oxidative products. Oxidative attack on 5-methylcytosine resulted primarily in formation of thymine glycol. The radiogenic yield of thymine glycol in poly(dG-dmC) was the same as that in poly(dA-dT), demonstrating that 5-methylcytosine residues in DNA were equally susceptible to radiation-induced oxidation as were thymine residues.
Natural Lavas as Catalysts for Efficient Production of Carbon Nanotubes and Nanofibers (2007)

Mount Etna provided the lava rocks used for the direct synthesis of carbon nanotubes and nanofibers by chemical vapor deposition (see image; scale bar: 15 μm). Since the iron oxide particles abundantly present serve as a natural catalyst, this could be an effective approach for the efficient production of nanocarbons.
Adenovirus-Based Vaccines against Rhesus Lymphocryptovirus EBNA-1 Induce Expansion of Specific CD8 <sup>+</sup> and CD4 <sup>+</sup> T Cells in Persistently Infected Rhesus Macaques (2014)

EBV is a common human pathogen that establishes a persistent infection through latency in B cells, where it occasionally reactivates. EBV infection is typically benign and is well controlled by the host adaptive immune system; however, it is considered carcinogenic due to its strong association with lymphoid and epithelial cell malignancies. Latent EBNA-1 is a promising target for a therapeutic vaccine, as it is the only antigen expressed in all EBV-associated malignancies. The goal was to determine if rhEBNA-1-specific T cells could be expanded upon vaccination of infected animals. Results were obtained with vaccines that target EBNA-1 of rhLCV, a virus closely related to EBV. We found that vaccination led to expansion of rhEBNA-1 immune cells that exhibited functions fit for controlling viral infection. This confirms that rhEBNA-1 is a suitable target for therapeutic vaccines. Future work should aim to generate more-robust T cell responses through modified vaccines.
Structure and Promoter Analysis of the Humanunc-33-like Phosphoprotein Gene (2000)

The human unc-33-like phosphoprotein (hUlip/CRMP-4) is a member of a family of developmentally regulated genes that are highly expressed in the nervous system. Mutations in the C. elegans unc-33 gene lead to worms with abnormal movements. The hUlip gene encodes a 570-amino acid protein with 98% homology to its murine (Ulip) (Byk, T., Dobransky, T., Cifuentes-Diaz, C., and Sobel, A. (1996) J. Neurosci. 16, 688-701) and rat (CRMP-4) (Wang, L. H., and Strittmatter, S. M. (1996) J. Neurosci. 16, 6197-6207) counterparts (Gaetano, C., Matsuo, T., and Thiele, C. J. (1997) J. Biol. Chem. 272, 12195-12201). The hUlip gene was isolated from a human genomic library. It contains 15 exons, including an exon defined by an anaplastic oligodendroglioma expressed sequence tag, and spans at least 61.7 kilobases. hUlip lacks sequences corresponding to the first six exons found in unc-33. unc-33 exons correspond to homologous hUlip exons as follows: VII to 1 and 2, VIII to 3-9, IX to 10-12, and X to 13 and 14. Using the hUlip clone 1 phage, fluorescence in situ hybridization analysis indicates that the hybridization signal localizes to human chromosome 5q32. Deletion analysis of 5'-flanking sequences delineated the sequences sufficient to express a reporter gene in both neuroblastoma cells and myoblasts. A consensus MyoD/myogenin binding site is located in a region of the downstream promoter that is nearly identical to its mouse homologue. Mutagenesis shows that this conserved MyoD/myogenin site is necessary for full promoter activity in both myoblasts and neuroblastoma cells.
Temperature Dependence of the Cyclotron Effective Mass in Zinc (1970)

The temperature dependence of the cyclotron effective masses of three orbits in zinc has been measured in the temperature range of 4.2-11\ifmmode^\circ\else\textdegree\fi{}K, and the masses were found to increase as the absolute temperature squared. The experimental results presented are in reasonable agreement with the theoretical calculations of Allen and Cohen reported in the following paper for the temperature dependence of the electron-phonon mass enhancement. The experiments were performed in the usual Azbel'-Kaner geometry. The zinc specimens used had optically flat surfaces and had ${\ensuremath{\omega}}_{\mathrm{rf}}\ensuremath{\tau}$ as large as 45.
Epigenetics within the matrix (2012)

Fibrosis of any tissue is characterized by excessive extracellular matrix accumulation that ultimately destroys tissue architecture and eventually abolishes normal organ function. Although much research has focused on the mechanisms underlying disease pathogenesis, there are still no effective antifibrotic therapies that can reverse, stop or delay the formation of scar tissue in most fibrotic organs. As fibrosis can be described as an aberrant wound healing response, a recent hypothesis suggests that the cells involved in this process gain an altered heritable phenotype that promotes excessive fibrotic tissue accumulation. This article will review the most recent observations in a newly emerging field that links epigenetic modifications to the pathogenesis of fibrosis. Specifically, the roles of DNA methylation and histone modifications in fibrotic disease will be discussed.
Vector control of voltage source inverter fed induction motor drive using space vector PWM technique (2017)

Induction motors are widely used in industrial applications due to their relatively low cost, high reliability and almost free maintenance. It is rugged, lower cost and weight, reliable and almost free maintenance when compared to DC motor. There are a number of ways of controlling induction motors. Among these, V/f control is the most traditional method. As induction motor requires a coordinated control of stator current magnitude, frequency and phase, which is not possible in V/f control of induction motor drives, this method gives a low dynamic performance. Vector control, also known as Field-Oriented Control (FOC) is an alternative. Vector control involves decoupled control of flux and torque. This is achieved through the four control loops which are controlled using PI controllers. PI controllers under saturation give delayed response. This can be overcome by implementing an Anti-windup PI controller, which keeps track of the output under saturation. IGBT based Voltage Source Inverter (VSI) feeds the Induction Motor Drive. Space Vector PWM (SVPWM) technique is used for generating gating pulses. Vector control is a popular control method, but the design seems to be a complicated task. The paper aims at a detailed design of vector control in a simple manner.
Mixing analog and digital techniques for silicon neural networks (2002)

Some of the problems which arise during the design of dedicated implementations of artificial neural networks are described, with emphasis on the selection tradeoffs between analog and digital circuits. It is shown that mixing both techniques may result in an overall performance improvement. A cell based on this principle is described. The analysis of several implementation problems of silicon ANNs (artificial neural networks) shows that precision is not essential for adaptive networks and that pulse-stream circuits represent a good compromise between performance, size and speed. Pulse-stream methodologies are chosen because they allow a noise-insensitive, hence efficient, transmission of information. Although this has not been the selection criterion, it is worth noting that the use of pulse streams has a counterpart in natural neural networks, which use these techniques heavily to transmit analog information in a noisy environment and to reduce the total power dissipation.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
The Art of Modeling Dynamic Systems : Forecasting for Chaos, Randomness, and Determinism (1992)

First Page
Characterization of the human sex hormone binding globulin (SHBG) gene and demonstration of two transcripts in both liver and testis (1989)

A genomic cosmid clone for human sex hormone binding globulin (SHBG), a liver-secreted plasma glycoprotein that binds sex steroids, was isolated with a previously characterized liver cDNA as probe. Southern blot analysis of genomic DNA indicated that only one SHBG gene is present in the human haploid genome. A 3.8 Kb Xba I-fragment of the clone containing the entire coding region of SHBG was sequenced. The SHBG gene has 8 exons. The 5'-end preceding the translation start site had no TATA box or CAAT box promoter elements. Screening of a human testis cDNA library resulted in the isolation of two distinct cDNA forms. One cDNA was identical with the previously characterized liver SHBG cDNA, thus suggesting that human SHBG and the androgen binding protein (ABP) produced by Sertoli cells are coded for by the same gene. The second cDNA differed from the first by having exon I exchanged with a completely different sequence and exon VII deleted. An exon coding for the 5'-end of this cDNA was found in the cosmid clone 1.5 kb upstream of the first SHBG exon. Primer extension experiments showed the alternatively spliced transcript corresponding to the second cDNA to be present in both liver and testis. From the primary structure of this putative SHBG-gene-related protein, it may be deduced that it is a protein very different from SHBG and probably without steroid binding activity.
Identification of a matrix-associated region 5' of an immunoglobulin heavy chain variable region gene. (1991)

In the accompanying report (C. F. Webb, C. Das, S. Eaton, K. Calame, and P. Tucker, Mol. Cell. Biol. 11:5197-5205, 1991), we characterize B-cell-specific protein-DNA interactions at -500 and -200 bp upstream of the mu immunoglobulin heavy chain promoter whose abundances were increased by interleukin-5 plus antigen. Because of the high A + T/G + C ratio of these sequences and the consistent findings by others that enhancer- and promoterlike regions are often located near matrix-associated regions, we asked whether these sequences might also be involved in binding to the nuclear matrix. Indeed, DNA fragments containing the -500 binding site were bound by nuclear matrix proteins. Furthermore, UV cross-linking studies showed that the DNA binding site for interleukin-5-plus-antigen-inducible proteins could also bind to proteins solubilized from the nuclear matrix. Nuclear matrix-associated sequences have also been demonstrated on either side of the intronic immunoglobulin heavy chain enhancer. Our data suggest a topological model by which interactions among proteins bound to the promoter and distal enhancer sequences might occur.
Celeb-DF: A Large-scale Challenging Dataset for DeepFake Forensics (2019)

AI-synthesized face-swapping videos, commonly known as DeepFakes, is an emerging problem threatening the trustworthiness of online information. The need to develop and evaluate DeepFake detection algorithms calls for large-scale datasets. However, current DeepFake datasets suffer from low visual quality and do not resemble DeepFake videos circulated on the Internet. We present a new large-scale challenging DeepFake video dataset, Celeb-DF, which contains 5,639 high-quality DeepFake videos of celebrities generated using improved synthesis process. We conduct a comprehensive evaluation of DeepFake detection methods and datasets to demonstrate the escalated level of challenges posed by Celeb-DF.
Undershooting using the vertical hydrophone array: The South Marsh Island experiment (1993)

PreviousNext No AccessSEG Technical Program Expanded Abstracts 1993Undershooting using the vertical hydrophone array: The South Marsh Island experimentAuthors: N. MoldoveanuR. HermanJ. LangM. ChangN. MoldoveanuGECO‐PRAKLA, Inc., R. HermanGECO‐PRAKLA, Inc., J. LangGECO‐PRAKLA, Inc., and M. ChangGECO‐PRAKLA, Inc.https://doi.org/10.1190/1.1822542 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Permalink: https://doi.org/10.1190/1.1822542FiguresReferencesRelatedDetailsCited ByNonstretch normal moveout through iterative partial correction and deconvolutionEttore Biondi, Eusebio Stucchi, and Alfredo Mazzotti4 June 2014 | GEOPHYSICS, Vol. 79, No. 4The drive for better bandwidth and resolution1 January 2005 | Geological Society, London, Petroleum Geology Conference series, Vol. 6, No. 1 SEG Technical Program Expanded Abstracts 1993ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 1993 Pages: 1396 publication data© 1993 Copyright © 1993 Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished: 10 Feb 2005 CITATION INFORMATION N. Moldoveanu, R. Herman, J. Lang, and M. Chang, (1993), "Undershooting using the vertical hydrophone array: The South Marsh Island experiment," SEG Technical Program Expanded Abstracts : 536-539. https://doi.org/10.1190/1.1822542 Plain-Language Summary PDF DownloadLoading ...
Towards big linked data (2012)

In light of the challenges of effectively managing Big Data, we are witnessing a gradual shift towards the increasingly popular Linked Open Data (LOD) paradigm. LOD aims to impose a machine-readable semantic layer over structured as well as unstructured data and hence automate some data analysis tasks that are not designed for computers. The convergence of Big Data and LOD is, however, not straightforward: the semantic layer of LOD and the Big Data large scale storage do not get along easily. Meanwhile, the sheer data size envisioned by Big Data denies certain computationally expensive semantic technologies, rendering the latter much less efficient than their performance on relatively small data sets.
Glycogen metabolism: a <sup>13</sup>C‐NMR study on the isolated perfused rat heart (1984)

Glycogen synthesis from D-[1-13C]glucose was observed in the perfused rat heart by 13C-NMR spectroscopy at 62.9 MHz. The glycogenogenesis was stimulated by pretreatment of the animals with isoprenaline. Whereas in hearts from control rats the incorporation of D-[1-13C]glucose into the glycogen remained below the detection threshold, 5 min proton-decoupled 13C-NMR spectra revealed, in hearts from treated rats, a significant labelling of the glycogen within the first minutes of the perfusion and a further linear increase of the glycogen resonance for up to 25 min. This model was used to monitor the appearance of 13C-labelled lactate during ischemia.
Active filtering of harmonic currents in three-phase, four-wire systems with three-phase and single-phase nonlinear loads (2003)

A novel active harmonic-neutralizing filter is proposed which eliminates current harmonic effects, caused by any configuration of nonlinear loads in a three-phase, four-wire systems. The authors present proposed filter topologies and simulation results verifying the concept. Theoretical analysis of the circuit is included to facilitate a detailed converter design. The proposed topology is shown to have distinct advantages over traditional approaches to the problem, particularly over the three single-phase inverter approach.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Polyurethane elastomers based on 1,3 and 1,4‐bis(isocyanatomethyl)cyclohexane (2009)

Abstract Most polyurethane elastomers in the market place are based on aromatic isocyanates. This is partially due to the higher cost of aliphatic isocyanates compared with aromatic isocyanates which are commonly used by the industry. However, more importantly, it has been the performance deficiency of polyurethane elastomers based on commercial aliphatic isocyanates that has significantly limited their use. Though aliphatic‐based polyurethane elastomers possess increased resistance to hydrolysis and thermal degradation in addition to greater light stability, these elastomers often experience a decrease in physical–mechanical properties when compared with aromatic isocyanate‐based materials. In this study, we investigated elastomers based on 1,3 and 1,4‐bis(isocyanatomethyl)cyclohexane, an experimental diisocyanate recently developed by The Dow Chemical Company. The physical properties of the elastomers are reported and discussed in comparison to similar elastomers prepared from commercially available aliphatic and aromatic isocyanates. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009
Micromachined microstrip patch antenna with controlled mutual coupling and surface waves (2001)

Silicon micromachining has been used to demonstrate the possibility of building high performance microwave and millimeter-wave antennas. To suppress higher order substrate modes and increase the bandwidth of a patch antenna, silicon substrate has been used and material has been selectively removed under the patch area. In addition, the effect of etched grooves around a patch element has been studied for performance improvement, it has been shown that micromachined substrate structure can effectively suppress unwanted surface wave modes resulting in improved radiation efficiency. Moreover, effective dielectric constant curves for the shielded micromachined substrates are provided for accurate design of patch antennas. We have demonstrated that mutual coupling between the radiating patch elements due to surface waves can be controlled using various micromachined substrate configurations.
High-speed and high-efficiency Si optical modulator with MOS junction, using solid-phase crystallization of polycrystalline silicon (2016)

Abstract We developed a high-speed and high-efficiency MOS-capacitor-type Si optical modulator (Si-MOD) by applying a low optical loss and a low resistivity of a polycrystalline silicon (poly-Si) gate with large grains. To achieve a low resistivity of a poly-Si film, a P-doped poly-Si film based on Si 2 H 6 solid-phase crystallization (SPC) was developed, which showed a comparable resistivity to that of P-doped single-crystal Si. In addition, high-temperature annealing (HTA) after SPC was effective for realizing low optical loss. We designed the optimum Si-MOD structure and demonstrated a very high modulation efficiency of 0.3 V cm, which is very efficient among the Si-MODs developed thus far. High-speed (15 Gbps) operation was achieved with a small footprint of the 200-µm-long phase shifter and a low drive voltage of 1.5 V pp at a low optical insertion loss of −2.2 dB and 1.55 µm wavelength.