gebhart/patrepeval huggingface dataset:
Analysis of parallel coupled-line bandpass filters using a ground plane aperture (2004)

Parallel coupled-line bandpass filters using the ground aperture technique is analyzed in this paper. A design guide for this kind of coupled-line bandpass filters on commonly used both high and low permittivity substrates is presented Based on the proposed design curves, two sample bandpass filter configurations are designed. The design is simulated by Ansoft HFSS and validated by the measurement. Good agreement between simulated and measured responses is obtained.
Development of a biological cardiac pacemaker using gene therapy in a preclinical model (2008)

Objective: When cardiac atrioventricular nodal cells are damaged by disease, the implantation of a cardiac pacemaker becomes necessary. Several limitations and problems of artificial pacemakers have emerged during the past decades. In children and newborn babies with arrhythmia, initial size mismatch and their growth can pose a problem. Lead extraction and infections have additional risks. The aim of our study was the development of a biological cardiac pacemaker by in-vivo adenoviral transfection of ventricular cardiomyocytes in a large animal model with the gene encoding for Adenylate-Cyclase type VI (ACVI) in order to increase the intracellular concentration of cAMP and intrinsic rhythmic rate of the transfected cells, enabling ectopic pacing from the injection site.
Atomic-Step-Induced Screw-Dislocation-Driven Spiral Growth of SnS (2020)

The in-plane piezoelectricity or ferroelectricity of two-dimensional (2D) materials can vanish due to the appearance of inversion symmetry with increasing flake thickness, which drastically limits the development of their energy-harvesting application. Although the inversion symmetry breaking in spiral structure of 2D material may solve this problem, the control of spiral growth remains immature. Here, a novel technique to achieve high percentage of spiral SnS flakes with superior control of nucleation position is demonstrated. By introducing atomic steps on substrates, the screw dislocation can be easily formed when SnS partially grows across these steps and leads to over 90% of spiral SnS flakes grown by physical vapor deposition (PVD). Furthermore, the preference for SnS to nucleate at steps can introduce remarkable nucleation site control of spiral growth even on substrates with artificially transferred graphene atomic steps. Interestingly, it turns out that the spiral SnS structure exhibits centrosymmetric characteristic, indicating that single-spiral 2D materials with monolayer step height do not guarantee an inversion symmetry breaking structure. The high spiral flake percentage and precise control of nucleation sites in this study will facilitate future development of spiral 2D materials.
Large-Scale Management of Insect Resistance to Transgenic Cotton in Arizona - Can Transgenic Insecticidal Crops be Sustained? (2001)

A major challenge for agriculture is management of insect resistance to toxins from Bacillus thuringiensis (Bt) produced by transgenic crops. Here we describe how a large-scale program is being developed in Arizona for management of resistance to Bt cotton in the pink bollworm, Pectinophora gossypiella (Saunders) (Lepidoptera: Gelechiidae), and other insect pests of cotton. Financial support from growers makes this program possible. Collaboration between the Arizona Cotton Research and Protection Council, the University of Arizona, and government agencies has led to development of resistance management guidelines, a remedial action plan, and tools for monitoring compliance with the proposed guidelines. Direct participation in development of resistance management policies is a strong incentive for growers to invest in resistance management research. However, more research, regularly updated regulations, and increased collaboration between stakeholders are urgently needed to maintain efficacy of Bt toxins in transgenic crops.
Growth Temperature Influence on the Luminescence of Eu,Si-Codoped AlN Phosphors (2013)

Influence of the growth temperature on the luminescence properties of Eu,Si-codoped AlN was studied by means of SEM, XRD and CL. The Si and Eu concentrations were fixed at 2.2 and 0.1 at%, respectively, while the growth temperature was varied from 1600 to 1950°C. The synthesized Eu,Si-doped AlN powders emit in the ultraviolet range, with bands at 350 and 380 nm, and in the visible range, with bands at 460 and 560 nm. An increase of the 460 nm emission is observed with the temperature increase, while the 560 nm emission disappears above 1700°C. On the other hand, the luminescence distribution is strongly affected by the temperature. The luminescence variation is discussed in terms of dopants diffusion inside AlN grains.
Par-4: A New Activator of Myosin Phosphatase (2010)

Myosin phosphatase (MP) is a key regulator of myosin light chain (LC20) phosphorylation, a process essential for motility, apoptosis, and smooth muscle contractility. Although MP inhibition is well studied, little is known about MP activation. We have recently demonstrated that prostate apoptosis response (Par)-4 modulates vascular smooth muscle contractility. Here, we test the hypothesis that Par-4 regulates MP activity directly. We show, by proximity ligation assays, surface plasmon resonance and coimmunoprecipitation, that Par-4 interacts with the targeting subunit of MP, MYPT1. Binding is mediated by the leucine zippers of MYPT1 and Par-4 and reduced by Par-4 phosphorylation. Overexpression of Par-4 leads to increased phosphatase activity of immunoprecipitated MP, whereas small interfering RNA knockdown of endogenous Par-4 significantly decreases MP activity and increases MYPT1 phosphorylation. LC20 phosphorylation assays demonstrate that overexpression of Par-4 reduces LC20 phosphorylation. In contrast, a phosphorylation site mutant, but not wild-type Par-4, interferes with zipper-interacting protein kinase (ZIPK)-mediated MP inhibition. We conclude from our results Par-4 operates through a "padlock" model in which binding of Par-4 to MYPT1 activates MP by blocking access to the inhibitory phosphorylation sites, and inhibitory phosphorylation of MYPT1 by ZIPK requires "unlocking" of Par-4 by phosphorylation and displacement of Par-4 from the MP complex.
ELECTROPHORETIC INHOMOGENEITY OF CRYSTALLINE BETA-LACTOGLOBULIN (1946)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTELECTROPHORETIC INHOMOGENEITY OF CRYSTALLINE BETA-LACTOGLOBULINChoh Hao LiCite this: J. Am. Chem. Soc. 1946, 68, 12, 2746–2747Publication Date (Print):December 1, 1946Publication History Published online1 May 2002Published inissue 1 December 1946https://pubs.acs.org/doi/10.1021/ja01216a530https://doi.org/10.1021/ja01216a530research-articleACS PublicationsRequest reuse permissionsArticle Views30Altmetric-Citations25LEARN 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
An optical device to measure the dynamics of apex rotation of the left ventricle (1993)

Systolic counterclockwise rotation of the left ventricular apex with respect to the base has been defined as left ventricular (LV) twist or torsion. If rotation of the base during systole is small, we hypothesized that the dynamics of twist can be well characterized through the measurement of apical rotation alone. A device was designed to measure apical rotation in a simpler, more direct fashion, providing continuous high-fidelity dynamic measurements. The device consists of a light source, a position-sensitive diode, and a small rotating mirror that is coupled to the apex of the heart by a wire. As the wire rotates, apical rotation (measured in degrees) can be calculated from the position of the deflected light beam. The timing of apical rotation was compared with simultaneous recordings of electrocardiogram, LV pressure, and LV diameter measurements. An initial clockwise rotation (untwist) of 4 +/- 2 degrees (SD) occurred during isovolumic contraction followed by counterclockwise rotation (twisting) through ejection, reaching maximum apical rotation of -15 degrees just before the end of systole. Rapid untwisting during isovolumic relaxation was shown with near-complete dissipation of twist by the first one-third of the diastolic filling period. Caval occlusion caused a downward and leftward shift of the pressure-apical rotation loops, and more twist/untwist was seen to occur during the respective isovolumic contraction and relaxation periods. We conclude that this device provides precise timing and definition of rapid changes during isovolumic contraction and relaxation, confirms results obtained by more laborious methods, and provides an easy method to measure the dynamics of apical rotation continuously during interventions such as load changes.
The determination of the stereochemistry of epoxides located at the 5,6-positions of decalinic systems: An empirical method based on <sup>13</sup>C NMR chemical shifts (2002)

The 13 C NMR spectra of a series of 5,6-epoxides in decalinic systems were studied. The interpretation of the chemical shifts allowed us to formulate an empirical rule to predict the epoxide stereochemistry. A discussion of the scope and limitations of this method and its extension to larger carbon skeletons is also presented.Key words: epoxide stereochemistry, 13 C NMR, NMR, decalinic systems, oxiranes.
Using of Modified Plastic Waste Based on Poly(ethylene‐co‐acrylic acid) Grafts to Solve Transportation Problem of Petroleum Crude Oil (2007)

Polyethylene acrylic acid copolymer (PEAA) was modified with different types of alkanols and hydroxybenzoic acids to produce three types of esterified grafts. The molecular structures of the synthesized dispersants were performed using 1H NMR analysis. The molecular weights of the synthesized dispersants were determined by GPC technique. The activity of PEAA derivatives as asphaltene stabilizer in the crude oil was evaluated by means of flocculation measurements. The effect of asphaltenes on the rheological behavior of highly asphaltenic crude oils was studied to evaluate the transportation parameters of crude oils. The rheological properties were measured at different temperature ranges of 5°C to 25°C in presence and absence of PEAA additives. It was observed that the PEAA having side chain lengths below C16 show non‐Newtonian pseudoplastic relationships at temperatures from 25°C to 5°C. While, PEAA additives having side chain lengths equal or above C16 show Newtonian relationship even at low temperature (5°C) for all tested crude oils. Keywords: Asphaltene dispersantrheologypolyethylene acrylic acidplastic wastecrude oiltransportationflow improver
Characteristics of combustion in an IDI diesel engine with a swirl chamber made of ceramics. (1991)

There is a concept that the increase in the temperature of the charge in a combustion chamber and the shield of heat transfer through a chamber wall can facilitate soot oxidation and reduce soot discharge. In the experiments presented here, an IDI diesel engine installed with a bigger-size cylindrical swirl chamber with two quartz windows, which can be considered to be a piston cavity in a DI diesel engine, was used to inspect the concept. The experiments were carried out using two types of swirl chambers to examine the effects mentioned above. The first chamber was made of ceramics and the other was made of steel. In case of the ceramics chamber, the evaporation of fuel oil is promoted more, the vapor is spread more, the ignition delay is shorter, the area of the flame is larger, the area of high flame temperature is larger, a stabler combustion is maintained until the flame vanishes, the maximum pressure is higher and soot is distributed in a wider zone than in that of the steel chamber.
Two independent conjugal transfer systems operating in Bacteroides fragilis V479-1 (1982)

Bacteroides fragilis V479-1 (also designated strain 92) has previously been shown to contain a conjugative plasmid, pBF4, that specifies resistance to clindamycin (Cc). A report of inducible tetracycline (Tc) resistance in this strain suggested that this phenotype was also plasmid associated (G. Privitera et al., Nature [London] 278:657-659, 1979) and prompted further investigation. Mating experiments with V469-1 and a Cc-sensitive derivative of V479-1, V598, showed that Tc resistance transfer occurred by a conjugation-like event which was insensitive to DNase, was not mediated by donor culture cell-free filtrates, and required cell-to-cell contact. Results from transfer experiments with V479-1 indicated that Tc and Cc resistance determinants were not linked and segregated independently in matings. Progeny recovered from matings with the V479-1 or V598 donor strain were able to transfer the Tc resistance marker in secondary crosses. Tc resistance transfer from V479-1 or V598 was greatly stimulated by pregrowth in the presence of Tc but not Cc. pBF4-mediated Cc resistance transfer was not affected by pregrowth in the presence of Cc or Tc. Filter blot DNA hybridization studies revealed that pBF4 sequences were not involved in either the Tc resistant phenotype or its associated conjugal transfer properties. The Tc resistance transfer element was not associated with pBF4 or any other extrachromosomal DNA element.
The stochastic growth of metal whiskers (2017)

The phenomenon of spontaneously growing metal whiskers (MWs) raises significant reliability concerns due to their related arcing and shorting in electric equipment. The growth kinetics of MWs remains poorly predictable. Here, we present a theory describing the earlier observed intermittent growth of MWs as caused by local energy barriers related to variations in the random electric fields generated by surface imperfections. We find the probabilistic distribution of MW stopping times, during which MW growth halts, which is important for reliability projections.
Eli Yarnall, The Seer (1909)

Bulletin of Friends' Historical Society of Philadelphia - Volume 3, Number 2, Sixth Month (June) 1909
OBSERVATIONS OF OPPOSITELY DIRECTED UMBRAL WAVEFRONTS ROTATING IN SUNSPOTS OBTAINED FROM THE NEW SOLAR TELESCOPE OF BBSO (2016)

We study the umbral waves as observed by chromospheric imaging observations of two sunspots with the New Solar Telescope at the Big Bear Solar Observatory. We find that the wavefronts (WFs) rotate clockwise and form a one-armed spiral structure in the first sunspot, whereas two- and three-armed structures arise in the second sunspot where the WFs rotate anticlockwise and clockwise alternately. All the spiral arms display propagation outwards and become running penumbral waves once they cross the umbral boundaries, suggesting that the umbral and penumbral waves propagate along the same inclined field lines. We propose that the one-armed spiral structure may be produced by the WF reflections at the chromospheric umbral light bridge, and the multi-armed spirals may be related to the twist of the magnetic field in the umbra. Additionally, the time lag of the umbral oscillations in between the data of He i 10830 Å and Å is ∼17 s, and it is ∼60 s for that in between the data of 304 Å and Å. This indicates that these disturbances are slow magnetoacoustic waves in nature, and that they propagate upward along the inclined lines with fast radial expansions causing horizontal velocities of the running waves.
WETTING POWER IN CALCIUM-SOAP–OIL SYSTEMS (1944)

Contact angles of various mineral oils and water on relatively polar and non-polar calcium stearate surfaces prepared by special means were measured. Pre-moistening of the soap surface with small quantities of water decreased the subsequent contact angle against oil. The effect of the polarity of the oil was determined, and the action of water in the system is discussed.The sedimentation volume of calcium stearate in mineral oil, with and without various added materials, was measured. Water, glycerol, and alcohol effected an agglomeration of the suspended soap, and less polar liquids had no effect. Fatty acid in small quantities brought about a swelling of the soap at room temperature. The relation between wetting power and sedimentation volume is discussed.
The outcome of children with Fanconi anemia given hematopoietic stem cell transplantation and the influence of fludarabine in the conditioning regimen: a report from the Italian pediatric group (2007)

These data, useful for counselling, provide support to the concept that a relevant proportion of FA patients undergoing HSCT can now be successfully cured, even in the absence of an HLA-identical sibling, especially if the conditioning regimen includes fludarabine.
Release of gastrointestinal peptides during E. coli endotoxinaemia. (1984)

We have earlier reported an elevation of vasoactive intestinal polypeptide (VIP) plasma levels during endotoxinaemia in pigs (Revhaug et al., 1983). In the present study the plasma levels of pancreatic polypeptide (PP), somatostatin, gastric inhibitory peptide (GIP) and insulin have been measured by sensitive Ria methods during E. coli endotoxin (Difco) shock in six anaesthetized pigs. The plasma samples were drawn from the vena porta, cava superior, internal jugular vein and the aorta. A significant increase in plasma levels of PP, somatostatin, and insulin was observed in this model. The increased plasma levels were higher in the portal vein than in the other sampling site. GIP did not present any change in this model.
Preparation and Reactions of Mono- and Diethyldiboranes<sup>1</sup> (1958)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation and Reactions of Mono- and Diethyldiboranes1Irvine J. Solomon, Morton J. Klein, and Kiyo HattoriCite this: J. Am. Chem. Soc. 1958, 80, 17, 4520–4523Publication Date (Print):September 1, 1958Publication History Published online1 May 2002Published inissue 1 September 1958https://pubs.acs.org/doi/10.1021/ja01550a022https://doi.org/10.1021/ja01550a022research-articleACS PublicationsRequest reuse permissionsArticle Views38Altmetric-Citations13LEARN 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
A simple low-cost coplanar twin-slot active antenna oscillator for wireless applications (1999)

This paper presents a compact, simple, low-cost coplanar waveguide active antenna oscillator which can be used for wireless communication applications. The circuit uses the active MGA86576 MMIC amplifier, which is biased through its output port using simple lumped elements. A closed feedback loop is implemented with two slot antennas fed by coplanar waveguide transmission lines. The paper presents a design procedure to systematically dimension the different parts of the structure until the oscillation condition is satisfied. An active antenna oscillator has been designed, manufactured, and tested, and measured results are in good agreement with predictions. The circuit exhibits a very clean, stable oscillation, and the radiation patterns are smooth and quasiomnidirectional. The measured gain of the active antenna is 3.2 dBi. ©1999 John Wiley & Sons, Inc. Microwave Opt Technol Lett 23: 18–25, 1999.
Pressurized fluidized-bed combustion. Volume III. Test 2 results (1981)

This report presents details and results from a test on a pressurized fluidized-bed combustor which was concerned with: demonstrating that load can be changed at a suitable rate in a PFBC by changing the bed height and thus altering the ratio of cooled surface between the bed and the freeboard; and operating at 1400/sup 0/F bed temperature and a bed depth of 6 ft, with and without cooling in the freeboard at a fluidising velocity, excess air and pressure of 4 ft/s, 50% and 75 psig, respectively. Most of the test was concerned with transferring bed material to-and-from a storage vessel at controlled but varying rates and at different bed temperatures. Bed levels were changed at rates of between 0.2 and 0.5 ft/min with no untoward excursions in gas composition. The most stringent conditions existed when changing bed temperature and pressure at the same time as changing bed level. It was concluded that changing load in this manner in a commercial unit would be a practical possibility. While changing bed height, heat transfer coefficients to cooled tubes in the splash zone were measured. The combustion efficiency was 97% without freeboard cooling, and 96% with freeboard cooling. Sulphur retention was aboutmore » 71% at a Ca/S ratio of 1.4. NO/sub x/ emission was about 0.35 lb/10/sup 6/ Btu. Elutriation from the combustor was about 19,000 ppM of dust, considerably higher that in a previous test, because the dolomite contained many more fines than in Test 1. Response rate measurements were made. Other data given in the report deal with alkali emissions and the performance of the gas cleaning equipment.« less
Morphological resonances detected from a cluster of two microspheres (1994)

Morphological resonances are detected in elastic scattering and fluorescence excitation spectra from a cluster of two spheres, each ~5 μm in radius, isolated and oriented in an electrodynamic levitator trap. Light scattering at 90° and perpendicular to the line of centers of the particles, by broadside illumination with polarization in the scattering plane, shows that an independent particle model may be used in describing resonance positions and the shape of the spectrum, even though the joined particles differ in size by slightly less than 10 nm. In end-fire illumination the fluorescence excitation spectrum is missing a number of resonances that are seen with broadside illumination.
Biochemical Studies on “Bakanae” Fungus. Part 69. Synthesis of Substances related to Gibberellins (1964)

Degradation of gibberellin C afforded methyl 1, 7-dimethyl-2α-hydroxy-8-oxo-7α-gibb-4a(4b)-ene-1, 10-diearboxylate, from which gibberellin C was reconstructed. Reactions of desoxogibberellin C are also described.