gebhart/patrepeval huggingface dataset:
Pyroelectric conversion cycle of vinylidene fluoride-trifluoroethylene copolymer (1985)

Copolymers of vinylidene fluoride–trifluoroethylene P(VDF-TrFE) exhibit large piezoelectric and pyroelectric effects. In addition to the most common application of the pyroelectric effect (radiant detection) it is possible to convert heat directly into electrical energy by pyroelectric conversion. This study reports the first pyroelectric conversion cycle to be measured for the copolymer P(VDF-TrFE). It is found that standard isothermal D-E hysteresis loop measurements are not necessarily accurate predictors of pyroelectric conversion performance for this material. Conduction effects are found to obscure the observation of conversion cycles in most cases for the presently available materials. In spite of these difficulties, a conversion cycle was measured whose output electric energy density was 30 mJ/cm3. The output density is 15 times larger than any other polymer previously measured .
Light-Microscopic Demonstration of Methylene Blue Accumulation Sites in Mouse Brain after Supravital Staining (1992)

Mouse brains were stained supravitally with methylene blue and studied in paraffin sections by light microscopy. In the perikarya, the dye was found to bind primarily to the nuclei; only slight staining of the cytoplasm was observed. Dye accumulations within nerve fibers were found in the nodes of Ranvier and in the varicosities of the unmyelinated endings. Specific dye binding in dendrites corresponded mainly to beads and spines. The accumulation sites in terminal neuronal processes appeared to be closely related to the plasma membrane. These morphological data would explain the neurophysiologically proven interaction of the dye with calcium-binding sites in membranes.
DOE/Opt: a system for design of experiments, response surface modeling, and optimization using process and device simulation (1994)

Rapid modeling and optimization of manufacturing processes, devices, and circuits are required to support modern integrated circuit technology development and yield improvement. We have prototyped and applied an integrated system, called DOE/Opt, for performing Design of Experiments (DOE), Response Surface Modeling (RSM), and Optimization (Opt). The system to be modeled and optimized can be either physical or simulation based. Within the DOE/Opt system, coupling to external simulation or experimental tools is achieved via an embedded extension language based on Tcl. The external problem then appears to DOE/Opt as a model with user defined inputs and outputs. DOE/Opt is used to generate splits for experiments, to dynamically build and evaluate regression models from experimental runs, and to perform nonlinear constrained optimizations using either regression models or embedded executions. The intermediate regression modeling can appreciably accelerate the optimization task when simulation or physical experiments are expensive. The primary application of DOE/Opt has been to process optimization using coupled process and device simulation. DOE/Opt has also been applied to process and device simulator tuning, and to aid in device characterization. Such a DOE/Opt system is expected to augment the use of TCAD tools and to utilize data collected by CIM systems in support of process synthesis. We have demonstrated the application of the system to process parameter determination, simulator tuning, process control modeling, and statistical process optimization. We are extending the system to more fully support emerging device design and process synthesis methodologies.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Optimization of metallic microheaters for high-speed reconfigurable silicon photonics (2010)

The strong thermooptic effect in silicon enables low-power and low-loss reconfiguration of large-scale silicon photonics. Thermal reconfiguration through the integration of metallic microheaters has been one of the more widely used reconfiguration techniques in silicon photonics. In this paper, structural and material optimizations are carried out through heat transport modeling to improve the reconfiguration speed of such devices, and the results are experimentally verified. Around 4 micros reconfiguration time are shown for the optimized structures. Moreover, sub-microsecond reconfiguration time is experimentally demonstrated through the pulsed excitation of the microheaters. The limitation of this pulsed excitation scheme is also discussed through an accurate system-level model developed for the microheater response.
Inhibition of <i>Neisseria gonorrhoeae</i> by <i>Lactobacillus</i> Species That Are Commonly Isolated from the Female Genital Tract (2002)

Epidemiological studies suggest H(2)O(2)-producing lactobacilli protect women against gonorrhea. Here we demonstrate that Lactobacillus crispatus and Lactobacillus jensenii, the most common lactobacilli in the female genital tract, inhibit gonococci in both acidic and neutral pH conditions. Inhibition was neutralized by bovine catalase, suggesting that H(2)O(2) is the primary mediator of inhibition.
Seismic Considerations for Extended Pile Foundations (2012)

Current seismic design relies on built-in ductility at strategic locations to cope with any anticipated inelastic demand in the structure at the design level earthquake. A satisfactory response can be ensured by detailing the regions of inelastic deformation for ductility while non-ductile failures in other regions are protected by a hierarchy of strength between competing ductile and non-ductile failures. For bridge structures supported on extended pile-shafts, yielding may occur in the pile at some distance below the ground level depending on the soil condition. Unlike fixed-base columns, bending moment in extended pile-shafts is more gradual due to the distributed resistance of the soil. The lateral restraint provided by the surrounding soil enhances the ultimate compressive strain of the concrete, which in turn increases the ultimate curvature that can be tolerated by the pile. In this paper, a simple model suitable for estimating the lateral stiffness, lateral strength and ductility of the extended pile-shaft is presented. The elastic stiffness of the soil-pile system is estimated using the classical solution for an elastic beam supported on elastic Winkler foundation. The lateral strength is determined using the flexural strength of the pile and a suitably assumed ultimate soil pressure distribution. By considering a concentrated plastic hinge rotation at the location of maximum moment, a kinematic model for estimating the local curvature ductility demand is developed. The curvature ductility demand is shown to depend on the above-ground height, the stiffness of the pile and soil, the depth-to-maximummoment, and the plastic hinge length. Suggestions for selecting soil properties and examples are provided in the paper.
Differential expression of mRNA coding for heparin‐binding growth factor type 2 in human cells (1988)

The proliferation of normal human fibroblasts, keratinocytes, and melanocytes in vitro can be controlled by purified polypeptide growth factors and serum. We have studied the cellular expression of the heparin-binding growth factor type 2/basic fibroblast growth factor (HBGF-2/bFGF) gene to determine whether these cell types synthesize mRNA for this mitogen. Our results indicate that normal human fibroblasts synthesize four distinct mRNAs of 7.0, 3.7, 2.2, and 1.5 kilobases, which hybridize to a specific HBGF-2/bFGF cDNA probe. In fibroblasts, the level of all four of these transcripts increases dramatically (more than tenfold) within 4 hours of treatment of quiescent cells with fresh fetal bovine serum. Of the purified growth factors tested, transforming growth factor type-beta also increased HBGF-2/bFGF mRNA abundance, but not to the levels attained by serum treatment. Treatment of fibroblasts with cycloheximide before and during serum treatment blocked the ability of serum to induce the expression of the HBGF-2/bFGF gene. The gene is expressed at low levels in human fibroblasts rapidly growing in serum-free medium and at higher levels in cells rapidly growing in serum-containing medium. In contrast to fibroblasts, mRNA coding for HBGF-2/bFGF is undetectable in proliferating normal human keratinocytes, melanocytes, or mammary epithelial cells. Because keratinocytes and melanocytes proliferate in response to purified HBGF-2/bFGF, our results suggest that HBGF-2/bFGF may mediate the proliferation of epidermal cells through paracrine mechanisms involving stromal fibroblasts. Moreover, we have shown that a human squamous cell carcinoma cell line (SCC-25) expresses mRNA coding for HBGF-2/bFGF, suggesting that the gene may become activated in some carcinomas.
Physicochemical Properties of Gelatin from Jellyfish Rhopilema hispidum (2014)

Abstract The objective of this study was to elucidate the physicochemical characteristics of gelatin extracted from jellyfish Rhopilema hispidum . We investigated the proximate composition, amino acids, gel strength, gelling/melting points, dynamic viscoelastic properties, and viscosity of jellyfish gelatin. Jellyfish gelatin contained 12.2% moisture, 1.5% lipid, 2.1% ash, and 84.8% protein. Glycine, hydroxyproline, proline, and alanine were the predominant amino acids. The gelatin showed a gel strength of 31.2 kPa, a gelling point of 18.0°C, and melting point of 22.3°C. The gelatin was composed of α 1 -chain, α 2 -chain, β-chain, and γ-chain. During cooling and heating process, jellyfish gelatin showed lower elastic modulus (G') and loss modulus (G'') values than mammalian gelatin. Jellyfish gelatin did not show superior rheological properties to mammalian gelatin, like other fish gelatin; however, it can be used in various food and cosmetic products not requiring high gel strength.
SYSTEMATICS OF LEUCOPHYLLUM AND EREMOGETON (SCROPHULARIACEAE) (1985)

(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Purification and characterization of a phytase (<i>myo</i>-inositol-hexakisphosphate phosphohydrolase) accumulated in maize (<i>Zea mays</i>) seedlings during germination (1993)

Phytase (myo-inositol-hexakisphosphate phosphohydrolase, EC 3.1.3.8) has been purified from 5-7-day-old maize (Zea mays) seedlings, using a four-step purification procedure. The native protein has a molecular mass of about 76 kDa and is built up from two 38 kDa subunits. The pH and temperature optima of the purified enzyme were respectively 4.8 and 55 degrees C. The apparent Km for phytate was estimated to be 117 microM. Like other acidic phytases, the maize seedling enzyme exhibited a broad affinity for various phosphorylated substrates and especially for penta- and tri-phosphate esters of myo-inositol. The amino acid composition of the h.p.l.c.-purified protein indicated a high hydrophobicity (44% non-polar amino acids). Rabbit antibodies were produced in response to maize seedling phytase. Western-blot analyses clearly demonstrate that the increase of phytase activity observed during the first 7 days of germination corresponded to an accumulation of the protein in maize seedlings. Phytase accumulated essentially in the shoots (mesocotyl plus coleoptiles.
PATHOGENICITY TESTS OF NUCLEAR POLYHEDROSIS VIRUSES INFECTING THE EASTERN HEMLOCK LOOPER, <i>LAMBDINA FISCELLARIA FISCELLARIA</i> (LEPIDOPTERA: GEOMETRIDAE) (1970)

Abstract Larvae of the eastern hemlock looper, Lambdina fiscellaria fiscellaria (Guen.), are susceptible to a nuclear polyhedrosis virus as well as nuclear polyhedrosis viruses isolated from the western hemlock looper, L . f . lugubrosa (Hulst), and the western oak looper, L . f . somniaria (Hulst). The pathogenicity of these viruses was similar when tested on eastern hemlock looper larvae and it is suggested that the same virus infects the three subspecies. Resistance to the virus did not increase with age; second-, third-, and fourth-instar larvae were equally susceptible. The period from ingestion to death varied with concentration of virus and rearing temperature. Results of pathogenicity tests are given.
Film Music of the Quarter (1948)

Research Article| July 01 1948 Film Music of the Quarter Lawrence Morton Lawrence Morton Search for other works by this author on: This Site PubMed Google Scholar Hollywood Quarterly (1948) 3 (4): 395–402. https://doi.org/10.2307/1209312 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Cite Icon Cite Search Site Citation Lawrence Morton; Film Music of the Quarter. Hollywood Quarterly 1 July 1948; 3 (4): 395–402. doi: https://doi.org/10.2307/1209312 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 ContentFilm Quarterly Search This content is only available via PDF. Copyright 1947/1948 The Regents of the University of California Article PDF first page preview Close Modal You do not currently have access to this content.
Genome-wide analysis of DNA methylation and gene expression patterns in purified, uncultured human liver cells and activated hepatic stellate cells (2015)

Our study provides the first epigenetic blueprint of three distinct freshly isolated, human hepatic cell types and of epigenetic changes elicited upon HSC activation.
UWB Microwave Imaging for Breast Tumor Detection in Inhomogeneous Tissue (2005)

Inhomogeneous breast tissue has a strong scattering effect when the breast is illuminated by a detecting signal. This effect influences the tumor's response signal and makes the imaging result worse. This paper presents an efficient imaging approach to detect breast tumor in inhomogeneous tissue. We separated the transmitter and receiver to lower the rigorous request for antenna design. An ultra wideband microwave pulse was transmitted into the breast and the backscatter signal was received by each antenna in an array. The transmitter was set at four different locations sequently and four-group backscatter data were received and added together as the response signal from the tumor. Results of signal processing demonstrate that this method is superior to the previous methods and can localize the tumor efficiently.
Effect of gloss and texture on the color of injection‐molded pigmented plastics (2005)

Abstract A model that describes the influence of gloss on the measured (reflected) color, initially developed for xerographic prints and which takes into account the geometry of the color measuring device, was applied to colored injection‐molded plastics used in the interior of a car. The model is shown to give reasonable results for the material used (acrylonitrile‐butadiene‐styrene polymer) in four different colors. The gloss dependence of the measured color can also be expressed in terms of suitable surface topography descriptors, in this case the root‐mean‐square roughness and the lateral correlation length. The relation between the color of these pigmented plastics and material properties such as the light absorption and scattering coefficients is described using the Kubelka‐Munk equation for pigment‐paste mixtures. The scattering coefficient was found to be significantly affected by the surface texture, with a coarser texture giving a higher scattering. POLYM. ENG. SCI. 45:733–744, 2005. © 2005 Society of Plastics Engineers
Implicit Buffer Overflow Protection Using Memory Segregation (2011)

Computing systems continue to be plagued by malicious corruption of instructions and data. Buffer overflows, in particular, are often employed to disrupt the control flow of vulnerable processes. Existing methods of protection against these attacks operate by detecting corruption after it has taken place or by ensuring that if corruption has taken place, it cannot be used to hijack a process' control flow. These methods thus still allow the corruption of control data to occur but, rather than being subverted, the process may terminate or take some other defined error. Few methods have attempted to prevent the corruption of control data, and those that have only focused on preventing the corruption of the return address. We propose the use of multiple memory segments to support multiple stacks, heaps, bss, and data sections per process with the goal of segregating control and non-control data. By segregating these different forms of data, we can prevent the corruption of control data by overflow and address manipulation of memory allocated for non-control data. We show that the creation of these additional data segments per process can be implemented through modifications to the compiler.
Mechanical Behavior of Sapphire Whiskers at Elevated Temperatures (1962)

The tensile behavior of sapphire whiskers was measured at temperatures ranging from 25–2030°C. At room temperature, the tensile strength of the whiskers is size dependent and varies from several hundred thousand psi to 1 500 000 psi. With increasing temperature the strength decreases and becomes less size dependent. The whiskers exhibit delayed fracture above 630°C, the time to fracture being exponentionally related to the applied stress. Delayed fracture occurs in both hydrogen and oxygen atmospheres and hence is not believed to be due to stress corrosion. The mechanical behavior of the whiskers has been rationalized by assuming that they are essentially dislocation free and that failure occurs by thermally activated crack propagation preceded, at high temperatures, by localized dislocation nucleation.
Objective speech quality measure for cellular phone (2002)

Cellular phone network speech quality monitoring is a regular task performed by the cellular service providers. Objective speech quality measures are needed in such tasks to provide a reasonably accurate estimate of subjective quality of the network. We performed an experiment to collect real distorted data, conducted a survey to obtain subjective quality measure of the collected speech samples and studied the statistical correlation of 32 objective speech quality measures with the subjective measures. Four of the objective measures were found to be good. Synchronization was found to be important.
Development of a multi-disciplinary computing environment (MDICE) (1998)

The growing need for and importance of multi-component and multi-disciplinary engineering analysis has been understood for many years. For many applications, loose (or semi-implicit) coupling is optimal, and allows the use of various legacy codes without requiring major modifications. For this purpose, CFDRC and NASA LeRC have developed a computational environment to enable coupling between various flow analysis codes at several levels of fidelity. This has been referred to as the Visual Computing Environment (VCE), and is being successfully applied to the analysis of several aircraft engine components. Recently, CFDRC and AFRL/VAAC (WL) have extended the framework and scope of VCE to enable complex multi-disciplinary simulations. The chosen initial focus is on aeroelastic aircraft applications. The developed software is referred to as MDICE-AE, an extensible system suitable for integration of several engineering analysis disciplines. This paper describes the methodology, basic architecture, chosen software technologies, salient library modules, and the current status of and plans for MDICE. A fluid-structure interaction application is described in a separate companion paper.
Ex Vivo Analysis of Thymic CD4 T Cells in Nonobese Diabetic Mice with Tetramers Generated from I-Ag7/Class II-Associated Invariant Chain Peptide Precursors (2003)

The MHC determines susceptibility and resistance to type 1 diabetes in humans and nonobese diabetic (NOD) mice. To investigate how a disease-associated MHC molecule shapes the T cell repertoire in NOD mice, we generated a series of tetramers from I-A(g7)/class II-associated invariant chain peptide precursors by peptide exchange. No CD4 T cell populations could be identified for two glutamic acid decarboxylase 65 peptides, but tetramers with a peptide mimetic recognized by the BDC-2.5 and other islet-specific T cell clones labeled a distinct population in the thymus of young NOD mice. Tetramer-positive cells were identified in the immature CD4(+)CD8(low) population that arises during positive selection, and in larger numbers in the more mature CD4(+)CD8(-) population. Tetramer labeling was specific based on the use of multiple control tetramers, including one with a single amino acid analog peptide in which a critical TCR contact residue was substituted. The T cell population was already present in the thymus of 2-wk-old NOD mice before the typical onset of insulitis and was detected in B10 mice congenic for the NOD MHC locus, but not B10 control mice. These results demonstrate that a T cell population can expand in the thymus of NOD mice to levels that are at least two to three orders of magnitude higher than estimated for a given specificity in the naive T cell pool. Based on these data, we propose a model in which I-A(g7) confers susceptibility to type 1 diabetes by biasing positive selection in the thymus and later presenting peptides from islet autoantigens to such T cells in the periphery.
The Data Doughnut and the Software Hole (2006)

In computing, the data is the end, the programs merely the means.
Optically demodulated interferometric sensor system (1994)

We demonstrate the feasibility of optically demodulating and processing the output produced by an interferometric fiber sensor. A technique for providing the time filtering of an optical signal in the optical domain based on the use of a doped fiber section is reported. Optical processing is a field which offers enormous potential for rapid, parallel processing of information, and is an area which will continue to experience significant growth over the coming years. Optical sensors have a natural inherent compatibility with this form of processing, which could be utilized to great advantage for processesing the data from large arrays of sensors. Many forms of fiber optic sensor, however, produce an optical output which does not vary in a uniform fashion with the measurand field, and consequently require a linearization circuit. or 'demodulator' to provide a linear transfer function before a signal could be converted back to the optical domain and operated on by an optical processor. This is particularly true with interferometric fiber sensors which exhibit a cosine squared transfer function. To demodulate this form of output, a range of demodulation schemes have been developed, such as active phase tracking homodyne [1], phase generated carrier (PGC) passive homodyne [2], and synthetic heterodyne [3J. These techniques allow the detection of measurand-induced phase shifts down to the irad/'JHz level over a wide range of frequencies with high linearity and wide dynamic range. Certain forms of interferometric sensors designed for low frequency measurands, such as magnetometers and electhc field sensors, require the additional demodulation of a 'dither' induced phase carrier signal which is modulated by the DC and low frequency measurand information. In such systems, the overall demodulation process requires several electronic processing blocks after photodetection of the interferometer signal. In applications where arrays of such sensors are of interest, a significant amount of electronics may be required to fully demodulate the sensor outputs. We have examined the practicality of using optical techniques to perform much of the demodulation process, and in this paper demonstrate the feasibility of this concept.