gebhart/patrepeval huggingface dataset:
Kinetics of the hydrogen-oxygen difluoride reaction in Monel (1972)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics of the hydrogen-oxygen difluoride reaction in MonelThomas W. Asmus and Thomas J. HouserCite this: Inorg. Chem. 1972, 11, 2, 234–237Publication Date (Print):February 1, 1972Publication History Published online1 May 2002Published inissue 1 February 1972https://pubs.acs.org/doi/10.1021/ic50108a005https://doi.org/10.1021/ic50108a005research-articleACS PublicationsRequest reuse permissionsArticle Views32Altmetric-Citations4LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
Development of Miniaturized Devices Using X -Ray Microlithography in Poly(methyl Methacrylate) for Chemical Monitoring and Microfluidic Applications. (2000)

The research presented in this document is focused on the development and characterization of novel microfluidic devices using X-ray photolithography in poly(methyl methacrylate) (PMMA). A conductivity detector cell was developed and characterized as a sensitive detector for DNA and KCl using flow injection, then was integrated into a high-performance liquid chromatography system for the purification of PCR amplicons. A planar conductivity cell was then developed on a microchip and its detection sensitivity was characterized by pressure pumping KCl through the detector and monitoring the change in conductivity. Also, the topography of the device was characterized using scanning electron and optical microscopy images. A novel computer-controlled mechanical syringe-pump is described which uses a piezoelectric actuator and a pivoted lever for amplification of the linear displacement of the piezo to deliver solvents free from pump pulsations at volumetric flow rates approaching 1 nanoliter per minute even at high loading levels (high output pressures). The piezo-pump was found to adequately deliver stable flow of solutions with loading pressures as high as 3.79 x 10 5 Pa (actual loading pressure at the piezo = 3.41 x 106 Pa). Monitoring the flow stability using fluorescence indicated that the volume flow was fairly noise-free at pumping rates from 4--150 nL/min. A diffuser/nozzle system was fabricated which allowed automatic refilling of the syringe pump and was micromachined into PMMA using X-ray lithography. The diffuser/nozzle system contained channels that were 50 mum in depth and tapered from 300 to 30 mum. The modification of a PMMA surface was demonstrated and characterized by monitoring the contact angles of water and laser-induced fluorescence confocal microscopy. The surface was shown to be amenable to attachment of biomolecules. A Hae III restriction enzyme was immobilized on the surface of the PMMA and used for solid phase DNA digestion without affecting the activity of the enzyme. Also, 35-mer single-stranded oligonucleotides were immobilized to PMMA and hybridization experiments were performed which demonstrate the utility of the PMMA substrate for DNA microarrays applications.
Histogram-based morphological edge detector (1994)

Presents a new edge detector for automatic extraction of oceanographic (mesoscale) features present in infrared (IR) images obtained from the Advanced Very High Resolution Radiometer (AVHRR). Conventional edge detectors are very sensitive to edge fine structure, which makes it difficult to distinguish the weak gradients that are useful in this application from noise. Mathematical morphology has been used in the past to develop efficient and statistically robust edge detectors. Image analysis techniques use the histogram for operations such as thresholding and edge extraction in a local neighborhood in the image. An efficient computational framework is discussed for extraction of mesoscale features present in IR images. The technique presented in the present article, called the Histogram-Based Morphological Edge detector (HMED), extracts all the weak gradients, yet retains the edge sharpness in the image. A new morphological operation defined in the domain of the histogram of an image is also presented. An interesting experimental result was found by applying the HMED technique to oceanographic data in which certain features are known to have edge gradients of varying strength.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
ChemInform Abstract: Studies on Vitamin D (Calciferol) and Its Analogues. Part 37. A‐Homo‐ 11‐hydroxy‐3‐deoxyvitamin D: Ring Size and π‐Facial Selectivity Effects on the (1,7)‐Sigmatropic Hydrogen Shift of Previtamin D to Vitamin D. (1991)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Coupling CRFs and Deformable Models for 3D Medical Image Segmentation (2007)

In this paper we present a hybrid probabilistic framework for 3D image segmentation, using Conditional Random Fields (CRFs) and implicit deformable models. Our 3D deformable model uses voxel intensity and higher scale textures as data-driven terms, while the shape is formulated implicitly using the Euclidean distance transform. The data-driven terms are used as observations in a 3D discriminative CRF, which drives the model evolution based on a simple graphical model. In this way, we solve the model evolution as a joint MAP estimation problem for the 3D label field of the CRF and the 3D shape of the deformable model. We demonstrate the performance of our approach in the estimation of the volume of the human tear menisci from images obtained with optical coherence tomography.
Stability and Infectivity of Cytolethal Distending Toxin Type V Gene-Carrying Bacteriophages in a Water Mesocosm and under Different Inactivation Conditions (2012)

Two cytolethal distending toxin (Cdt) type V-encoding bacteriophages (Φ62 and Φ125) were induced spontaneously from their wild-type Escherichia coli strains and from the lysogens generated in Shigella sonnei. The stability of Cdt phages was determined at various temperatures and pH values after 1 month of storage by means of infectivity tests using a plaque blot assay and analysis of phage genomes using real-time quantitative PCR (qPCR): both were highly stable. We assessed the inactivation of Cdt phages by thermal treatment, chlorination, UV radiation, and in a mesocosm in both summer and winter. The results for the two Cdt phages showed similar trends and were also similar to the phage SOM23 used for reference, but they showed a much higher persistence than Cdt-producing E. coli. Cdt phages showed maximal inactivation after 1 h at 70°C, 30 min of UV radiation, and 30 min of contact with a 10-ppm chlorine treatment. Inactivation in a mesocosm was higher in summer than in winter, probably because of solar radiation. The treatments reduced the number of infectious phages but did not have a significant effect on the Cdt phage particles detected by qPCR. Cdt phages were quantified by qPCR in 73% of river samples, and these results suggest that Cdt phages are a genetic vehicle and the natural reservoir for cdt in the environment.
ChemInform Abstract: Chiral Lewis Acids for Enantioselective C‐C Bond Formation. (1987)

Abstract The optically active Lewis acid ent‐(VII) is prepared from styrene (I) as shown in the reaction scheme.
Theory of single-electron charging of quantum wells and dots (1991)

Single-electron charging effects similar to those in small-area metallic tunnel junctions should take place in semiconductor heterostructures, in particular, small-area quantum wells. Our analysis shows that dc current-voltage characteristics of such a well should exhibit an interplay between single-electron charging and energy-quantization effects. Relative magnitude of the single-electron charging effects is determined by the same parameter which scales multielectron charging in the conventional (large-area) quantum wells.
Automatic Contingency Selection (1979)

A fast technique has been developed for the automatic ranking and selection of contingency cases for a power system contingency analysis study. A contingency list is built containing line and generator outages which are ranked according to their expected severity as reflected in voltage level degradation and circuit overloads. An adaptive contingency processorcan be set up by performing sequential contingency tests starting with the most severe contingencies at the top of the list and proceeding down the list, stopping when the severity goes below a threshold. Computational results of this technique applied to different test systems are presented.
A reduced complexity block iterative DFE for dispersive wireless applications (2005)

For wireless applications, the computational complexity of the filter design is an important drawback of existing decision feedback equalizers (DFEs). We propose a new iterative block DFE (IBDFE) which operates iteratively on blocks of the received signal. Two design methods are considered. In the first method, hard detected data are used as input of the feedback and filters are designed according to the correlation between detected and transmitted data. In the second method, the feedback signal is directly designed from soft detection of the equalized signal at the previous iteration. From performance evaluations on a wireless dispersive Rayleigh fading channel we observed that the IBDFE outperforms existing DFEs with a significant reduction of computational complexity. Moreover, the two design methods provide a tradeoff between complexity and performance.
Power Beaming - Energy Transmission at 35 GHz and Higher Frequencies (1992)

<div class="htmlview paragraph">Microwave power beaming systems have been investigated for more than 30 years. The concept has recently become more practical for terrestrial and space applications with the development of rectifying antennas at higher frequencies (35 and 94 GHz) and power sources at high frequencies and high powers.</div>
Lossless image compression scheme with binary layers scanning (2014)

In this work a novel lossless coding approach for color images is considered. It is based on local-adaptive combination of inter- and intra-component prediction. New context modeling method based on decomposition to binary layers is used for prediction errors. Compression performance of proposed algorithm is proved by experimental results obtained for popular public benchmarks.
Highly Efficient Solid-State Near-infrared Organic Light-Emitting Diodes incorporating A-D-A Dyes based on α,β-unsubstituted “BODIPY” Moieties (2017)

We take advantage of a recent breakthrough in the synthesis of α,β-unfunctionalised 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY) moieties, which we symmetrically conjugate with oligothienyls in an unexpectedly stable form, and produce a "metal-free" A-D-A (acceptor-donor-acceptor) oligomer emitting in the near-infrared (NIR) thanks to delocalisation of the BODIPY low-lying lowest unoccupied molecular orbital (LUMO) over the oligothienyl moieties, as confirmed by density functional theory (DFT). We are able to retain a PL efficiency of 20% in the solid state (vs. 30% in dilute solutions) by incorporating such a dye in a wider gap polyfluorene matrix and demonstrate organic light-emitting diodes (OLEDs) emitting at 720 nm. We achieve external quantum efficiencies (EQEs) up to 1.1%, the highest value achieved so far by a "metal-free" NIR-OLED not intentionally benefitting from triplet-triplet annihilation. Our work demonstrates for the first time the promise of A-D-A type dyes for NIR OLEDs applications thereby paving the way for further optimisation.
St. Williams, Scotland and Selkirk strawberries (1993)

St. Williams strawberry (Fragaria × ananassa Duch.) has average size fruits with a high yield. The fruits have high quality and are outstanding for freezing. It is recommended as suitable for processing. Scotland strawberry has large extremely firm fruits, is very late maturing and can be decapped by machine. It is recommended for machine harvesting for processing. Selkirk has large, firm, high quality fruits with good yields. It is suitable for both the fresh and processing markets. Key words: Cultivar description, processing, machine harvesting
PDE4D plays a critical role in the control of airway smooth muscle contraction (2003)

The airways of mice deficient in the cAMP phosphodiesterase PDE4D gene are refractory to muscarinic cholinergic stimulation. This study was undertaken to determine whether altered smooth muscle contractility causes the PDE4D-/- phenotype. A major disruption in contractility was observed in isolated PDE4D-/- tracheas, with a 60% reduction in maximal tension and a fivefold decrease in sensitivity to muscarinic cholinergic agonists. Conversely, responses to KCl or arginine vasopressin were unaffected. PDE4D is the predominant PDE4 form in tracheal extracts and PDE4D mRNA is expressed in smooth muscle where muscarinic binding sites are most abundant. Cyclic AMP accumulation in response to acute G(s)alpha-coupled receptor stimulation was increased up to fourfold in the airway of PDE4D-/- mice when compared with wild-type. This increase in cAMP was associated with an increased sensitivity to PGE2-induced relaxation of the PDE4D-/-tracheas. Furthermore, a blockade of prostanoid accumulation in PDE4D-/- tracheas restored the response to muscarinic cholinergic stimulation in vitro and in vivo. These results demonstrate that PDE4D plays a key role in balancing relaxant and contracting cues in airway smooth muscle, suggesting that natural mutations in the PDE4D gene have profound effects on airway tone.
Filters for HST Wide Field Camera 3 (2006)

Wide-Field Camera 3 (WFC3) has been built for installation on the Hubble Space Telescope (HST) during the next servicing mission. The WFC3 instrument consists of both a UVIS and an IR channel, each with its own complement of filters. On the UVIS side, a selectable optical filter assembly (SOFA) contains a set of 12 wheels that house 48 elements (42 full-frame filters, 5 quadrant filters, and 1 UV grism). The IR channel has one filter wheel which houses 17 elements (15 filters and 2 grisms). While the majority of UVIS filters exhibited excellent performance during ground testing, a subset of filters showed filter ghosting; improved replacements for these filters have been procured and installed. No filter ghosting was found in any of the IR filters; however, the new IR detector for WFC3 will have significantly more response blueward of 800 nm than the original detector, requiring that two filters originally constructed on a fused silica substrate be remade to block any visible light transmission. This paper summarizes the characterization of the final complement of the WFC3 UVIS and IR filters, highlighting improvements in the replacement filters and the projected benefit to science observations.
Heteroantisera prepared against B lymphocytes at different stages of differentiation. II. Functional analysis of cytotoxicity to different B-cell populations. (1977)

Functional studies on heteroantisera raised against mouse B cells in rabbits suggest a correlation between thymus-independent B cells and LPS-responsive B cells, and differences in either from thymus-dependent B cells. Furthermore it seems possible to follow B-lymphocyte differentiation from antigen-uncommitted precursors to antigen committed immature B cells to mature B lymphocytes by the loss and acquisition of surface markers distinguished by these heteroantisera. Additional evidence is provided that there are distinctive antigenic differences between antibody forming cells raised from the same B-cell source after in vivo or in vitro immunization.
Motion and Strain Along the Musculotendon Junction of the Biceps Femoris: Shortening vs. Lengthening Contractions (2009)

Acute muscle strain injuries typically occur during active lengthening contractions, and tend to present along or near a musculotendon junction (MTJ) [1]. For example, among sprinters, the majority of hamstring strain injuries involve the proximal MTJ of the biceps femoris long head [1,2]. We have previously shown that post-injury scarring at the MTJ can persist for many months after return to sport [2], which may contribute to the high risk for re-injury associated with these injuries. Thus, it is pertinent to understand why the MTJ is susceptible to injury, and ultimately how post-injury remodeling may alter in-vivo mechanics. The purpose of the current study was to use dynamic magnetic resonance (MR) imaging to visualize muscle tissue displacements and mechanical strains during active lengthening contractions in the biceps femoris. We hypothesized that active lengthening contractions would induce greater mechanical strain along the proximal MTJ, when compared to shortening contractions of similar loads and ranges of motion.
LPS and specific T cell responses: interleukin 1 (IL 1)-independent amplification of antigen-specific T helper (TH) cell proliferation. (1985)

Lipopolysaccharide (LPS) fraction of endotoxin induces a significant potentiation of the antigen-specific proliferative response of T helper (TH) cell lines. This effect was obtained with LPS from different bacterial sources and reproduced with the lipid A moiety of endotoxin. Purified adherent spleen cells used as antigen-presenting cells (APC) support this LPS-enhanced TH cell proliferation. In addition, the effect of endotoxin on specific TH cell responses was found to be absolutely dependent on the interaction between TH lymphocytes and APC through antigen-specific recognition. Thus, it was not observed in the absence of specific antigen or when monoclonal antibodies against class II MHC products or against L3T4 antigens were used to inhibit the T cell-APC interaction. Similarly, it was found that APC from the B6.CH-2bm12 mutant do not support the LPS-mediated enhancing effect. Furthermore, interleukin 1 (IL 1) appears not to be involved in LPS-mediated enhancement, and this effect is not reproduced by muramyl dipeptide (MDP)-mediated activation of APC.
Chronic total occlusion treatment in post‐CABG patients: Saphenous vein graft versus native vessel recanalization—Long‐term follow‐up in the drug‐eluting stent era (2007)

In selected cases, SVG reopening instead of the native vessel is feasible. In such a high-risk population, drug-eluting stent implantation in both SVG and native CTO lesions is associated with good long-term outcomes.
<title>Electromagnetic missiles from currents on fractal sets</title> (1990)

Electromagnetic pulses of finite total radiated energy can deliver energy to a distant receiver that decreases with distance much more slowly than the usual r exp -2. Such electromagnetic missiles can be generated by any of a class of current distributions over one or another set of points contained in a bounded region of a two-dimensional or three-dimensional space. For a given currrent-bearing set of points as a transmitter, one can explore various time and space dependencies of the transmitting current. Over some classes of dependencies, the energy reaching the receiver decreases as r exp -epsilon, where epsilon is a positive number that can vary from one current to another. Current-bearing sets so far explored have dimension 0, 1 or 2. For these, the requirement of finite total radiated energy establishes a greatest lower bound on epsilon, dependent on the dimensions of both the set and the space in which it resides. This infimum defines what can be called the pulse index of a set relative to the space containing it. One might conjecture that the pulse index can be defined for sets of fractional Hausdorff dimension. It will be shown that this is so, and that for certain sets of fractional dimension, the index is related to the dimension just as it is for integral dimensions.
Stresses developed on the surface of cylindrical joints subjected to multiple loads. (1968)

This thesis document was issued under the authority of another institution, not NPS. At the time it was written, a copy was added to the NPS Library collection for reasons not now known. It has been included in the digital archive for its historical value to NPS. Not believed to be a CIVINS (Civilian Institutions) title.
Cleavage of the X−Pro Peptide Bond by Pepsin Is Specific for the <i>trans</i> Isomer (1997)

Fluorine nuclear magnetic resonance studies of the cleavage of peptides containing a 4-fluorophenylalanine (FPhe)−Pro bond have been performed in order to determine the conformational specificity of FPhe−Pro bond cleavage by pepsin. The peptides selected were substrates of HIV protease or of avian sarcoma virus protease, both of which have been reported to be cleaved specifically at X−Pro by pepsin as well as by the corresponding viral protease enzyme. By working at 0 °C, it was possible to separate kinetically cleavage and cis/trans isomerization. For the case of the protease substrate, Ser-Gln-Asn-FPhe-Pro-Ile-Val-Gln, cleavage was shown to be specific for the trans conformation. A value for the rate constant for hydrolysis of the trans peptide divided by the Michaelis constant, ktH/KMtrans = 0.3 min-1 mM-1 was obtained with this substrate, and the Michaelis constant appears to be considerably higher than the substrate concentration, 3.7 mM, used in the study. On a slower time scale, additional cleavages can readily be detected. For the avian leukemia virus protease substrate, Thr-Phe-Gln-Ala-FPhe-Pro-Leu-Arg-Glu-Ala, the cleavage was both slower and less specific. In addition to the primary cleavage at the FPhe−Pro site, cleavage also occurs at the Ala-FPhe bond on a somewhat slower time scale. In addition to the conformational specificity of the cleavage reaction, these results indicate that pepsin is a better model for HIV protease than for avian leukemia virus protease.
Data security and data processing (1975)

HD28 .M414 no.771-, 75,
Dual‐Functional Semithiobambusurils (2014)

Semithiobambusurils, which represent a new family of macrocyclic host molecules, have been prepared by a convenient, scalable synthesis. These new cavitands are double functional: they strongly bind a broad variety of anions in their interiors and metal ions at their sulfur-edged portals. The solid-state structure of semithiobambus[4]uril with HgCl2 demonstrates the ability of these compounds to form linear chains of coordination polymers with thiophillic metal ions. The crystal structure of semithiobambus[6]uril with tetraphenylphosphonium bromide exhibits the unique anion-binding properties of the host cavity and the characteristics of the binding site.