gebhart/patrepeval huggingface dataset:
Dielectrophoresis of DNA: Time- and Frequency-Dependent Collections on Microelectrodes<tex>$^dagger$</tex> (2006)

This paper reports measurements that characterize the collection of DNA onto interdigitated microelectrodes by high-frequency dielectrophoresis. Measurements of time-dependent collection of 12 kilobase pair plasmid DNA onto microelectrodes by dielectrophoresis show significant reduction in the response as the frequency increases from 100 kHz to 20 MHz. Collection time profiles are quantitatively measured using fluorescence microscopy over the range 100 kHz to 5 MHz and are represented in terms of two parameters: the initial dielectrophoretic collection rate, and the initial to steady-state collection transition. Measured values for both parameters are consistent with trends in the frequency-dependent real part of the effective polarizability measured for the same plasmid DNA using dielectric spectroscopy. The experimentally measured parameters are qualitatively compared with trends predicted by theory that takes into account dielectrophoretic particle movement and diffusion. The differences between experiment and theory are discussed with suggested improvements to theoretical models, for example, including the effects of electrohydrodynamically driven fluid motion.
Minorities and Women in State and Local Government: 1973–1980 (1986)

The 1972 Equal Employment Opportunity Act extended federal prohibitions against discrimination in hiring, firing, promotion, compensation, and other conditions of employment to state and local governments. This research examines the increase in the number of women and minorities employed by state and local governments between 1973 and 1980. It also examines the increase in the salaries of minorities and women during the same period. The total number of minorities and women in state and local government increased by 20 percent during this period. Most of this increase resulted from the hiring of women, particularly white women. Although the salaries of minorities and women increased more than 50 percent, the salaries of white males increased similarly. The salary gap between white males and minorities and women was not decreased significantly.
Computed Tomographic Measurement of the Xenon Brain—Blood Partition Coefficient and Implications for Regional Cerebral Blood Flow: A Preliminary Report (1978)

The calculation of regional cerebral blood flow requires, in addition to the measurement of the clearance, a knowledge of the regional brain-blood partition coefficient. The usual 133Xe washout techniques do not measure this latter parameter but use published values for normal brain tissue. This may lead to large errors in pathological tissue because the partition coefficient changes significantly in brain tumors. Investigations have begun into the use of CT and stable xenon to produce a cross sectional view of the brain in terms of its brain-blood partition coefficients. Results of experiments using an iodine phantom and xenon inhalation in animals are presented.
Methylobacterium oryzae Influences Isoepoxydon Dehydrogenase Gene Expression and Patulin Production by Penicillium expansum (2021)

Biofilms can be considered the main source of microorganisms in drinking water distribution systems (DWDS). The ecology of a biofilm is dependent on a variety of factors, including the presence of microbial metabolites excreted by its inhabitants. This study reports the effect of the Gram-negative bacteria Methylobacterium oryzae on the idh gene expression levels and patulin production of Penicillium expansum mature biofilms. For this purpose, a RT-qPCR method to quantify idh mRNA levels was applied. In addition, the idh expression levels were compared with the patulin production. The results obtained revealed that the effect of the bacterium on pre-established P. expansum biofilms is dependent on the time of interaction. More mature P. expansum biofilms appear to be more resistant to the inhibitory effect that M. oryzae causes towards idh gene expression and patulin production. A positive trend was observed between the idh expression and patulin production values. The results indicate that M. oryzae affects patulin production by acting at the transcriptional level of the idh gene.
Bright small molecular white organic light-emitting devices with two emission zones (2002)

Bright multilayer organic light-emitting devices (OLEDs) containing both perylene-doped [4,4′-bis(9-carbazolyl) biphenyl (CBP)] and [4-(dicyano-methylene)-2-methyl-6-(p-dimethyl aminostyryl)-4H-pyran (DCM1)-doped tris-(8-hydroxy quinoline) Al (Alq3)] are described. The electroluminescence spectra consist of blue and green bands at 453, 487, and 524 nm due to perylene and a red band at 600 nm due to DCM1, although these two emitting layers are separated by a layer of [2-(4-biphenylyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole (Bu-PBD)]. As the thickness of the hole-injecting [N,N′-diphenyl-N,N′-bis(1-naphthyl-phenyl)-1, 1′-biphenyl-4,4′-diamine (NPB)] and perylene:CBP layers increases and that of the DCM1:Alq3 layer decreases the perylene emission intensifies strongly relative to the DCM1 emission. For 350 Å thick NPB, 350 Å thick perylene:CBP, 100 Å Bu-PBD, and 150 Å DCM1:Alq3, the brightness reaches 3750 Cd/m2 at 20 V, the efficiency is 2.4 Cd/A at 19 V, and the (x,y) CIE coordinates are well within the white region. However, as the bias is increased the intensity of the perylene emission increases relative to the DCM1 emission. Both the layer thickness and bias dependence are believed to result from changes in the recombination zone and in the field- and cathode-mirror-induced quenching of DCM1 singlet excitons.
Asymmetric Correlation: A Noise Robust Similarity Measure for Template Matching (2013)

We present an efficient and noise robust template matching method based on asymmetric correlation (ASC). The ASC similarity function is invariant to affine illumination changes and robust to extreme noise. It correlates the given non-normalized template with a normalized version of each image window in the frequency domain. We show that this asymmetric normalization is more robust to noise than other cross correlation variants, such as the correlation coefficient. Direct computation of ASC is very slow, as a DFT needs to be calculated for each image window independently. To make the template matching efficient, we develop a much faster algorithm, which carries out a prediction step in linear time and then computes DFTs for only a few promising candidate windows. We extend the proposed template matching scheme to deal with partial occlusion and spatially varying light change. Experimental results demonstrate the robustness of the proposed ASC similarity measure compared to state-of-the-art template matching methods.
An integrative hypothesis concerning the pathogenesis and progression of Alzheimer??s disease (1987)

Observations, in Alzheimer's disease, in the pattern of nerve cell damage and loss, the pathology, microchemistry and immunology of senile plaques and neurofibrillary tangles and alterations in blood vessels are drawn together into a hypothesis that attempts to explain the pathogenesis and progression of the disorder. At the heart of this hypothesis lies a defect in blood brain barrier function and/or structure within the cerebral cortex and this defect may be the cause of the cerebral vessel amyloidosis common in many patients with Alzheimer's disease. Age-related alterations in blood brain barrier allow for damage to nerve terminals and limited formation of senile plaques within cerebral cortex; neurofibrillary tangles are formed within cortical and subcortical nerve cells which project to or near damaged vessels/senile plaques. Uptake of neurotoxin at affected terminals and retrograde transport to perikarya causes neurofibrillary tangles to be formed; their accumulation leads to perikaryal changes culminating in cell death and loss. Loss of cells in cortically projecting areas of subcortex such as nucleus basalis, locus caeruleus and dorsal raphe, which terminate on cerebral vessels, causes further blood brain barrier dysfunction, new plaque formation and continued cell loss in cortex and subcortex. Once started, such a process could be self-perpetuating and the initial site of damage could lie within the amygdala/hippocampus with putative pathogenic agent accessing the brain via the olfactory pathways.
Auction Mechanisms for Efficient Advertisement Selection on Public Displays (2006)

Abstract. Public electronic displays can be used as an advertising medium when space is a scarce resource, and it is desirable to expose many adverts to as wide an audience as possible. Although the efficiency of such advertising systems can be improved if the display is aware of the identity and interests of the audience, this knowledge is difficult to acquire when users are not actively interacting with the display. To this end, we present BluScreen, an intelligent public display, which selects and displays adverts in response to users detected in the audience. Here, users are identified and their advert viewing history tracked, by detecting any Bluetooth-enabled devices they are carrying (e.g. phones, PDAs, etc.). Within BluScreen we have implemented an agent system that utilises an auction-based marketplace to efficiently select adverts for the display, and deployed this within an installation in our Department. We demonstrate, by means of an empirical evaluation, that the performance of this auction-based mechanism when used with our proposed bidding strategy, efficiently selects the best adverts in response to the audience presence. We benchmarked our advertising method with two other commonly applied selection methods for displaying adverts on public displays; specifically the Round-Robin and the Random approaches. The results show that our auction-based approach, that utilised the novel use of Bluetooth detection, outperforms these two methods by up to 64%. 1
Compact FPGA-based beamformer using oversampled 1-bit A/D converters (2005)

A compact medical ultrasound beamformer architecture that uses oversampled 1-bit analog-to-digital (A/D) converters is presented. Sparse sample processing is used, as the echo signal for the image lines is reconstructed in 512 equidistant focal points along the line through its in-phase and quadrature components. That information is sufficient for presenting a B-mode image and creating a color flow map. The high sampling rate provides the necessary delay resolution for the focusing. The low channel data width (1-bit) makes it possible to construct a compact beamformer logic. The signal reconstruction is done using finite impulse reponse (FIR) filters, applied on selected bit sequences of the delta-sigma modulator output stream. The approach allows for a multichannel beamformer to fit in a single field programmable gate array (FPGA) device. A 32-channel beamformer is estimated to occupy 50% of the available logic resources in a commercially available mid-range FPGA, and to be able to operate at 129 MHz. Simulation of the architecture at 140 MHz provides images with a dynamic range approaching 60 dB for an excitation frequency of 3 MHz.
MICROFILM DURABILITY TEST FOR ASPHALT (1955)

A DURABILITY TEST FOR ASPHALT USING THE SLIDING PLATE (MICROFILM) VISCOMETER IS DESCRIBED AS FOLLOWS: A 5 MICRON FILM OF ASPHALT IS AGED ON GLASS PLATES FOR 2 HOURS AT 225 F. THE HARDENING WHICH OCCURS IS DETERMINED BY MEASURING THE VISCOSITY OF THE ASPHALT BEFORE AND AFTER AGING. THE DURABILITY IS REPORTED AS AN AGING INDEX WHICH IS THE RATIO OF THE VISCOSITY OF THE AGED SAMPLE TO THAT OF THE ORIGINAL, BOTH VISCOSITIES HAVING BEEN DETERMINED AT THE SAME RATE OF SHEAR ( 5 X MINUS 100 SEC). A LOW AGING INDEX SIGNIFIES A MORE DURABLE ASPHALT. THE ORIGINAL VISCOSITY IS OBTAINED FROM A FILM PREPARED IN THE SAME MANNER BUT AGED. DATA WERE ALSO OBTAINED ON SAMPLES AGED IN NITROGEN. FROM THE DATA OBTAINED BY AGING IN AIR AND NITROGEN, INFORMATION IS OBTAINED CONCERNING THE RELATIVE EFFECTS OF OXIDATION AND VOLATILIZATION.
Infrared magnetic response in a random silicon carbide micropowder (2009)

We generalize the theoretical model of magnetic metamaterials made of dielectric particles to treat random particle sizes, shapes, and orientations. We demonstrate that the magnetic-dipole response of these randomly shaped subwavelength particles can be approximated with Mie theory as though they were spheres, while a quasistatic ellipsoidal approximation is used for the electric-dipole response. We verify our model with experimental measurement of a bulk magnetic response in a micropowder of milled SiC particles. Using such a crude powder could lead to immensely simplified negative permeability inclusions for negative index metamaterials.
Reconfigurable photonic crystal waveguides created by selective liquid infiltration (2012)

We experimentally demonstrate reconfigurable photonic crystal waveguides created directly by infiltrating high refractive index (n≈2.01) liquids into selected air holes of a two-dimensional hexagonal periodic lattice in silicon. The resulting effective index contrast is large enough that a single row of infiltrated holes enables light propagation at near-infrared wavelengths. We include a detailed comparison between modeling and experimental results of single line defect waveguides and show how our infiltration procedure is reversible and repeatable. We achieve infiltration accuracy down to the single air hole level and demonstrate control on the volume of liquid infused into the holes by simply changing the infiltration velocity. This method is promising for achieving a wide range of targeted optical functionalities on a "blank" photonic crystal membrane that can be reconfigured on demand.
A Case of Lamellar Ichthyosis with Rickets and Carcinoma of the Hypopharynx (2014)

Lamellar ichthyosis (LI) is an autosomal recessive disorder rarely associated with systemic organ involvement and development of carcinoma. Rickets has occasionally been described with LI owing to impaired vitamin D synthesis following altered keratinization. There has also been a high association of cutaneous cancers in patients of LI. We as Dermatologists should therefore be very meticulous while doing a full work up of these patients. We report here a case of LI associated with rickets and carcinoma of the hypopharynx.
Research on the model of spectral BRDF for space target surface material (2010)

In this paper, a five-parameter statistic model of spectral Bidirectional Reflectance Distribution Function (BRDF), which contains both of specular and diffuse reflection factors, is introduced for space target surface material. The optimal five parameters of the model at different wavelength are independently retrieved by using simulated annealing algorithm (SAA). An absolute measurement method of BRDF data is presented. A spectral radiation meter with 3nm resolution and a three-dimensional rotating system with 0.01° accuracy are utilized to establish the automatic measurement platform. The spectral BRDF data of typical space target sample (silver tinfoil) is measured in the range of 380-2500nm. The modeling results are coincided with the measured results, which verifies the validity of five-parameter statistic model.
Regulation of the hexosamine biosynthetic pathway in the water mold <i>Blastocladiella emersonii:</i> Sensitivity to endproduct inhibition is dependent upon the life cycle phase (1980)

Chitin, a homopolymer of N-acetylglucosamine (GlcNAc), is the major macromolecular constituent of Blastocladiella emersonii cell walls. Zoospores do not possess a wall nor do they contain sufficient total hexosamine to account for the chitin content of the wall abruptly formed during germination. UDPGlcNAc, both the endproduct of hexosamine biosynthesis and the substrate for chitin synthesis, is present in zoospores in sufficient concentration to inhibit the first hexosamine pathway-specific enzyme activity. Net chitin accumulates in register with dry weight during exponential growth, but does not accumulate appreciably during the succeeding sporulation phase. Predicted relationships among net rates of chitin synthesis, UDPGlcNAc concentrations, and UDP plus UTP concentrations throughout the life cycle are explored, as are the assumptions upon which the predictions were based. We find that the sensitivity of the first hexosamine pathway-specific enzyme to endproduct inhibition is not constant throughout the life cycle; sensitivity is very high in the zoospore phase, decreases dramatically during germination, remains very low through the growth phase, and increases gradually to the zoospore level during sporulation. The organism appears to have evolved endproduct regulation in this case as an adaptation to "hard-times" phases of the life cycle-i.e., as a safeguard against overproduction of end product (UDPGlcNAc) when its utilization in cell wall (specifically chitin) synthesis is curtailed. Conversely, the organism effectively discards this mode of regulation during "good times," when the demands for end product are evidently greater than endproduct inhibition would otherwise permit.
Fractionation of C-esterase from the hog's kidney extract (1960)

Research Article| November 01 1960 Fractionation of C-esterase from the hog's kidney extract F. Bergmann; F. Bergmann 1Department of Pharmacology, The Hebrew University-Hadassah Medical School, Jerusalem, Israel Search for other works by this author on: This Site PubMed Google Scholar Sara Rimon Sara Rimon 1Department of Pharmacology, The Hebrew University-Hadassah Medical School, Jerusalem, Israel Search for other works by this author on: This Site PubMed Google Scholar Biochem J (1960) 77 (2): 209–214. https://doi.org/10.1042/bj0770209 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Facebook Twitter LinkedIn MailTo Cite Icon Cite Get Permissions Citation F. Bergmann, Sara Rimon; Fractionation of C-esterase from the hog's kidney extract. Biochem J 1 November 1960; 77 (2): 209–214. doi: https://doi.org/10.1042/bj0770209 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 ContentAll JournalsBiochemical Journal Search Advanced Search This content is only available as a PDF. © 1960 CAMBRIDGE UNIVERSITY PRESS1960 Article PDF first page preview Close Modal You do not currently have access to this content.
A novel low-temperature method to fabricate MEMS resonators using PMGI as a sacrificial layer (2005)

A method to fabricate microelectromechanical systems (MEMS) clamped–clamped resonators using polymethylglutarimide (PMGI) as a sacrificial release layer has been developed. Control of the critical air-gap dimension between the resonator beam and drive electrode was maintained by varying the sacrificial PMGI thickness, allowing fabrication of devices with resonator-to-electrode gaps as small as 100 nm. The resonator beam was constructed by depositing a low stress, low temperature bi-layer alpha-TaN/SiON (50/2000 nm) film over the PMGI layer, followed by a multi-step etch process. Physical characterization of devices with varying beam lengths was performed via focused ion beam and scanning electron microscopy analyses to verify complete release of the resonator structures. Electrical testing showed a resonant frequency of 11.3 MHz, which agreed well with simulated results. The measured RF characteristics are fitted with a lumped element model that used Young's modulus and the device quality factor as adjustable parameters. Young's modulus of the individual components of the TaN/SiON bi-layer was measured and found to be in good agreement with the values used to fit the measured resonance.
The structure of two-dimensional vitreous silica (2012)

Glasses are ubiquitous in nature and technology. They are generally classified by a lack of periodicity and order. Therefore, it is a great challenge to investigate the atomic arrangement in a glass. Silica is the prototype glass network former. The corner-sharing interconnection of the tetrahedral building units provides high flexibility in its atomic configuration. Silica glass, also known as vitreous silica, has been studied by various techniques for more than 80 years. However, most methods fail to give a direct view on the atomic arrangement in glass. Scanning probe methods possess the potential to resolve atomic surface structures in real space. To study glasses by these methods, a new class of two-dimensional glassy structures had to be designed. In this work, we address a metal-supported silica bilayer at the atomic level. A combination of low energy electron diffraction, Auger electron spectroscopy, low temperature scanning tunneling microscopy and noncontact atomic force microscopy was applied in ultrahigh vacuum. The growth mode of the thin silica films was characterized. Local measurements revealed crystalline and vitreous regions in the silica bilayer film. We analyzed high resolution images of the vitreous bilayer at different ranges of order yielding a better understanding of vitreous structures in general. In addition, the atomic arrangement in crystalline and vitreous bilayer areas was resolved and thoroughly compared to each other. Ultimately, we unraveled the crystalline--vitreous interface in the two-dimensional silica film. The presented results show that the vitreous silica bilayer qualifies for a versatile glass model system.
Schematizzazione e modellazione degli edifici in muratura soggetti ad azioni sismiche (1991)

On propose des solutions directement utilisables aux problemes lies a la methode POR, preconisee en Italie pour tous les travaux de rehabilitation necessites par les seismes recents. Par cette methode, le bâtiment est modelise par un ensemble de parois avec ouvertures, solidarises par des planchers infiniment rigides, chaque paroi est ensuite discretisee en bandes horizontales et en panneaux verticaux aux proprietes differentes. Exemples. (CSTB)
Fire Performance of Rack Mounted PV Modules on Roofing Assemblies (2011)

In current fire safety standards, the fire performance ratings of photovoltaic (PV) modules installed on roofs are based upon separate testing of the PV module and the roofing materials. This research was carried out to determine if this component level assessment would be representative of a PV module installed on a roof, specifically a rack mounted PV module. The tests in the fire safety standards (UL 790/1703) that were part of this research were the Spread of Flame test and the Burning Brand test. In addition to testing, results from the fire modeling of the Spread of Flame test are presented. The research strongly suggests that the presence of a rack mounted PV module on a roof could adversely affect the fire performance of the roofing system. The extent of the performance degradation depends upon the PV/roof installation parameters.
Cutting Edge: Bacterial DNA and LPS Act in Synergy in Inducing Nitric Oxide Production in RAW 264.7 Macrophages (1999)

LPS is well recognized for its potent capacity to activate mouse macrophages to produce NO, an important inflammatory mediator in innate host defense. We demonstrate here that, although inducing little NO alone, DNA from both Gram-negative and Gram-positive bacteria synergizes with subthreshold concentrations of LPS (0.3 ng/ml) to induce NO in cultures of RAW 264.7 macrophages. The effects of the DNA are mimicked by synthetic CpG-containing oligodeoxynucleotides but not by non-CpG-containing oligodeoxynucleotides. This synergistic activity is not inhibited by neutralizing Abs against IFN. Preincubation of macrophages with DNA for 8-24 h suppresses subsequent synergistic macrophage responses to DNA/LPS, whereas prolonged pretreatment with LPS enhances synergy. RT-PCR analysis indicates that the mRNA levels of the inducible NO synthase gene are also coordinately suppressed or induced. These findings indicate that temporally controlled, synergistic interactions exist between microbial DNA and LPS in the induction of macrophage NO via enhanced inducible NO synthase gene expression.