gebhart/patrepeval huggingface dataset:
Evaluation of a multi-line de-embedding technique for millimeter-wave CMOS circuit design (2010)

This paper presents the evaluation of a pad model which is made by using L-2L de-embedding method. The coplanar waveguide transmission line (CPWTL) is used to evaluate the de-embedding method. The pad circuit model is set up after obtaining the results of de-embedding. Two comparisons are carried out to accomplish the evaluation of the pad circuit model. The calculation error in quality factor of transmission line is less than 6% in experimental result. Employing the model to de-embed other DUTs, the process becomes simple and chip area can be saved.
Lower-Extremity Electromyography Measures During Walking With Ankle-Destabilization Devices (2014)

Both ankle-destabilization devices caused an alteration in muscle activity during walking, which may be favorable to an injured patient. Therefore, implementing these devices in rehabilitation programs may be beneficial to improving neuromuscular control.
A recombinant polypeptide model of the second predicted nucleotide binding fold of the cystic fibrosis transmembrane conductance regulator is a GTP‐binding protein (1996)

Association reactions of a recombinant CFTR-NBF-2 polypeptide fused to glutathione S-transferase with guanine nucleotides were monitored quantitatively by recording the fluorescence enhancement of excited trinitrophenol (TNP)-labelled GTP after binding to NBF-2. Binding of TNP-GTP to the recombinant NBF-2 polypeptide was characterized by a Kd value of 3.9 microM. The corrected Kd values for unlabelled guanine nucleotides were determined to be 33 microM for GTP, 92 microM for GDP and 217 microM for GMP. TNP-ATP bound to NBF-2 was competitively displaced by GTP indicating a common binding site for both nucleotides. The recombinant NBF-2 did not show an intrinsic GTPase activity above a detection limit of 0.007 min(-1). Our findings provide the first experimental evidence that NBF-2 can act as a GTP-binding subunit that would favor the release of GDP after GTP hydrolysis.
FORMATION OF 2N MEGAGAMETOPHYTES IN DIPLOID TUBER‐BEARING SOLANUMS (1986)

Development of megaspores and megagametophytes was analyzed for several diploid potato clones ( Solanum spp.) that exhibit either high (HI) or low (LO) seed set when crossed as female with the tetraploid cultivated potato S. tuberosum Group Tuberosa. The objectives were to determine the relationship between ploidy and diam of nuclei and nucleoli, and to determine the mechanism(s) and frequencies of 2 n megagametophyte formation. Sizes of nuclei and nucleoli were found to depend on ploidy. For HI clones, the distributions of sizes indicated that doubling occurred during meiosis, and that 30 to 50% of the megaspores and megagametophytes were 2 n rather than haploid. Omission of the second meiotic division led to formation of second division restitution (SDR) 2 n megagametophytes. Only one HI clone had abnormal meiosis I, in addition to omission of meiosis II in some meiocytes; this clone seemed to produce not only 1 n and 2 n , but also 4 n megagametophytes. The results indicated that high crossability of the HI clones as female with tetraploids largely was due to formation of SDR 2 n megagametophytes, a finding strongly supporting the hypothesis that sexual polyploidization is the driving force behind polyploidization of Solanums. The results contribute to increasing evidence that meiotic mutants and abnormalities play an important role in angiosperm evolution.
ChemInform Abstract: WASSERFREIE FLUSS‐SAEURE ALS CYCLISIERUNGSMITTEL BEI DER HERSTELLUNG EINIGER SUBSTITUIERTER OXAZOLE AUS N‐AROYL‐ALPHA‐AMINO‐KETONEN (1973)

Abstract Die beiden Amide (Ia) und (Ib) liefern in wasserfreier Flußsäure die Cyclisierungsprodukte (IIa) und (IIb) in hoher Ausbeute.
<i>Arabidopsis</i> SOMATIC EMBRYOGENESIS RECEPTOR KINASES1 and 2 Are Essential for Tapetum Development and Microspore Maturation (2005)

Among the >200 members of the leucine-rich repeat receptor kinase family in Arabidopsis thaliana, only a few have been functionally characterized. Here, we report a critical function in anther development for the SOMATIC EMBRYOGENESIS RECEPTOR KINASE1 (SERK1) and SERK2 genes. Both SERK1 and SERK2 are expressed widely in locules until stage 6 anthers and are more concentrated in the tapetal cell layer later. Whereas serk1 and serk2 single insertion mutants did not show developmental phenotypes, serk1 serk2 double mutants were not able to produce seeds because of a lack of pollen development in mutant anthers. In young buds, double mutant anthers developed normally, but serk1 serk2 microsporangia produced more sporogenous cells that were unable to develop beyond meiosis. Furthermore, serk1 serk2 double mutants developed only three cell layers surrounding the sporogenous cell mass, whereas wild-type anthers developed four cell layers. Further confocal microscopic and molecular analyses showed that serk1 serk2 double mutant anthers lack development of the tapetal cell layer, which accounts for the microspore abortion and male sterility. Taken together, these findings demonstrate that the SERK1 and SERK2 receptor kinases function redundantly as an important control point for sporophytic development controlling male gametophyte production.
Identification of novel catalysts and conditions for the highly efficient and stable heterogeneous oligomerization of ethylene (1991)

J. Heveling, C. P. Nicolaides and M. S. Scurrell, J. Chem. Soc., Chem. Commun., 1991, 126 DOI: 10.1039/C39910000126
Sensitivities and Other Properties of Reagents for the Spectrophotometric Determination of Boron. (1963)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSensitivities and Other Properties of Reagents for the Spectrophotometric Determination of Boron.G. W. Goward and V. R. WiederkehrCite this: Anal. Chem. 1963, 35, 10, 1542–1545Publication Date (Print):September 1, 1963Publication History Published online1 May 2002Published inissue 1 September 1963https://pubs.acs.org/doi/10.1021/ac60203a059https://doi.org/10.1021/ac60203a059research-articleACS PublicationsRequest reuse permissionsArticle Views60Altmetric-Citations11LEARN 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
Gibberellin Concentration and Transport in Genetic Lines of Pea (1992)

Effects of the Na and Le loci on gibberellin (GA) content and transport in pea (Pisum sativum L.) shoots were studied. GA(1), GA(8), GA(17), GA(19), GA(20), GA(29), GA(44), GA(8) catabolite, and GA(29) catabolite were identified by full-scan gas chromatography-mass spectrometry in extracts of expanding and fully expanded tissues of line C79-338 (Na Le). Quantification of GAs by gas chromatography-single-ion monitoring using deuterated internal standards in lines differing at the Na and Le alleles showed that na reduced the contents of GA(19), GA(20), and GA(29) on average to <3% and of GA(1) and GA(8) to <30% of those in corresponding Na lines. In expanding tissues from Na le lines, GA(1) and GA(8) concentrations were reduced to approximately 10 and 2%, respectively, and GA(29) content increased 2- to 3-fold compared with those in Na Le plants. There was a close correlation between stem length and the concentrations of GA(1) or GA(8) in shoot apices in all six genotypes investigated. In na/Na grafts, internode length and GA(1) concentration of nana scions were normalized, the GA(20) content increased slightly, but GA(19) levels were unaffected. Movement of labeled GAs applied to leaves on Na rootstocks indicated that GA(19) was transported poorly to apices of na scions compared with GA(20) and GA(1). Our evidence suggests that GA(20) is the major transported GA in peas.
75 Inhibition of GRK2 Suppressed TNFα-Induced Inflammatory Signaling and Pro-Fibrotic Factor in Cardiomyocytes (2019)

TNFα is significantly elevated in burned patients and plays a role in the pathogenesis of cardiac dysfunction. In addition, increased G protein-coupled receptor kinase 2 (GRK2) modulates cardiac dysfunction. Therefore inhibition of GRK2 and TNFα signaling may be a viable option for burn induced cardiac dysfunction. However, the relationship between the two pathways has not been elucidated. In the present study, we explored the effect of GRK2 inhibitor (GRK2-I) on TNFα-induced pro-inflammatory and pro-fibrotic signaling in cardiomyocytes. H9c2 cardiomyocytes were exposed to TNFα and were treated with or without GRK2-I. Cellular proteins were analyzed with Western blot and immunofluorescence assay. TNFα treatments dramatically increased pro-inflammatory cytokine MCP1, which plays a major role in myocarditis and ischemia/reperfusion injury in cardiomyocytes. Pre-treatment with GRK2-I inhibited TNFα-induced MCP-1 secretion in dose-dependent fashion. Simultaneously, GRK2-I suppressed TNFα-induced NF-κB activation as evidenced by blocking NF-κB p65 nuclear translocation and inhibiting TNFα-stimulated IκBα phosphorylation and degradation. NF-κB chemical inhibitors abrogated TNFα-induced MCP-1 secretion in H9c2 cells. Our data demonstrated that GRK2-I significantly decreased endogenous and inflammatory stimulator-induced fibronectin expression in H9c2 cells. GRK2-I inhibited TNFα-induced inflammation through the NF-κB pathway and attenuated the expression of pro-fibrosis protein fibronectin. GRK2-I may represent a promising cardio-protective agent for burn patients.
Conceptual Design of a Structural-Battery Hybrid-Electric Aircraft (2017)

This paper describes an innovative hybrid-electric aircraft concept employing structural batteries (SB), i.e. multifunctional materials capable of storing electric energy and sustaining mechanical loads. This cutting-edge technology, currently under advanced development, is expected to impact deeply on multiple application fields in the future. SB mechanical characteristics are still relatively poor, but their energy storage capacity is significant, making them suitable for aeronautical applications. This inspired a concept that integrates SB in the whole airframe, avoiding the need for carrying too large an amount of heavy classic batteries to achieve a reasonable range. This concept is applied to a 4-seat, single-propeller airplane emerged as a promising answer to the stagnation observed in the field of General Aviation. The design aims at showing the potential benefits in drastic chemical and noise pollution reduction, while providing competitive operating costs and flight performance.
Transition from vortex to transverse walls in NiFe nano-structures (2006)

In this work, we investigate possible transitions from vortex to transverse walls in NiFe nano-structures between the two types wall types induced by a rotating magnetic field. The Landau-Lifshitz-Gilbert (LLG) equation is solved numerically using a finite element method.
Constraints on the petrologic structure of the subduction zone slab-mantle interface from Franciscan Complex exotic ultramafic blocks (2003)

Ultramafic blocks within mud-matrix mélange of the Franciscan Complex, California, preserve a series of metasomatic mineral zones generated by infiltration of Si-rich hydrous fluids during subduction. We describe the petrology and geochemistry of the metasomatic zones and compare them to current model predictions for the metasomatism of the mantle wedge by subduction zone fluids. Fluid flow affected a Cr-spinel lherzolite protolith to form first serpentinite, then a talc-dominated rock, and finally an amphibole-rich assemblage. A diverse suite of accessory minerals in the amphibole-rich zone (titanite + clinozoisite + zircon + apatite) suggests that the trace element signature of subduction zone fluids may be fractionated in this zone. Oxygen isotopic evidence suggests that the ultramafic blocks equilibrated with metasomatic fluids during serpentinization and that subsequent reactions occurred in equilibrium with these fluids in a temperature range of 450–500 °C. Whole-rock geochemistry indicates mobility of many elements into and out of the blocks during metasomatism, including elements such as Ti which are currently considered to have low solubilities in such fluids.\n\nTaken as a whole, the blocks appear to preserve the metasomatic structure of the slab-mantle interface in subduction zones and imply that the chemistry of slab-derived fluids is modified as they pass through these metasomatic zones in the mantle wedge. Our results suggest that the primary composition of subduction zone fluids is not likely reflected by arc magmas. Instead, we propose that arc magmas are derived from regions of the mantle fluxed by fluids residual to the metasomatic processes we observe.
Extracellular vesicles from biological fluids as potential markers in castration resistant prostate cancer (2022)

Some of the EV proteins identified from our analyses have potential to be used as CRPC markers. These markers may depict a pattern in cancer progression through non-invasive sample collection.
Analysis of Lipid Export in Hydrocarbonoclastic Bacteria of the Genus<i>Alcanivorax</i>: Identification of Lipid Export-Negative Mutants of<i>Alcanivorax borkumensis</i>SK2 and<i>Alcanivorax jadensis</i>T9 (2009)

Triacylglycerols (TAGs), wax esters (WEs), and polyhydroxyalkanoates (PHAs) are the major hydrophobic compounds synthesized in bacteria and deposited as cytoplasmic inclusion bodies when cells are cultivated under imbalanced growth conditions. The intracellular occurrence of these compounds causes high costs for downstream processing. Alcanivorax species are able to produce extracellular lipids when the cells are cultivated on hexadecane or pyruvate as the sole carbon source. In this study, we developed a screening procedure to isolate lipid export-negative transposon-induced mutants of bacteria of the genus Alcanivorax for identification of genes required for lipid export by employing the dyes Nile red and Solvent Blue 38. Three transposon-induced mutants of A. jadensis and seven of A. borkumensis impaired in lipid secretion were isolated. All isolated mutants were still capable of synthesizing and accumulating these lipids intracellularly and exhibited no growth defect. In the A. jadensis mutants, the transposon insertions were mapped in genes annotated as encoding a putative DNA repair system specific for alkylated DNA (Aj17), a magnesium transporter (Aj7), and a transposase (Aj5). In the A. borkumensis mutants, the insertions were mapped in genes encoding different proteins involved in various transport processes, like genes encoding (i) a heavy metal resistance (CZCA2) in mutant ABO_6/39, (ii) a multidrug efflux (MATE efflux) protein in mutant ABO_25/21, (iii) an alginate lyase (AlgL) in mutants ABO_10/30 and ABO_19/48, (iv) a sodium-dicarboxylate symporter family protein (GltP) in mutant ABO_27/29, (v) an alginate transporter (AlgE) in mutant ABO_26/1, or (vi) a two-component system protein in mutant ABO_27/56. Site-directed MATE, algE, and algL gene disruption mutants, which were constructed in addition, were also unable to export neutral lipids and confirmed the phenotype of the transposon-induced mutants. The putative localization of the different gene products and their possible roles in lipid excretion are discussed. Beside this, the composition of the intra- and extracellular lipids in the wild types and mutants were analyzed in detail.
Seroprevalence of pestivirus in Eurasian tundra reindeer in Finland, Sweden, Norway, Iceland and Russian Federation (2019)

Reindeer herding is of great importance for the indigenous people of the Fennoscandia peninsula and northern Russia. There are also free-ranging feral populations of reindeer in Finland, Iceland, Norway and Russian Federation. The genus <i>Pestivirus</i> contains several viral species that infect ungulates and often show capacity to transmit between different host species. Sera from 520 Eurasian tundra reindeer (<i>Rangifer tarandus tarandus</i>) from Finland, Sweden, Norway, Iceland and Russian Federation were analysed and the prevalence of pestivirus-specific antibodies was determined. Seropositivity proportion was 48.5% for Sweden and 41.2% for Norway, but only 1.6% for Iceland and 2.5% for Finland. All Russian reindeer investigated were seronegative. Pan-pestivirus RT-PCR of seronegative animals (n = 156) from seropositive herds confirmed their negative status. These results indicate unexpectedly non-uniform circulation of an as yet uncharacterised pestivirus in Eurasian reindeer populations. The high seroprevalence in some regions warrants further studies of pestivirus infection dynamics, effects on reindeer health and population dynamics.
Probing Surface-Adlayer Conjugation on Organic-Modified Si(111) Surfaces with Microscopy, Scattering, Spectroscopy, and Density Functional Theory (2009)

Highly conjugated molecules bound to silicon are promising candidates for organosilicon electronic devices and sensors. In this study, 1-bromo-4-ethynylbenzene was synthesized and reacted with a hydrogen-passivated Si(111) surface via ultraviolet irradiation. Through an array of characterization and modeling tools, the binding configuration and morphology of the reacted molecule were thoroughly analyzed. Atomic force microscopy confirmed an atomically flat surface morphology following reaction, while X-ray photoelectron spectroscopy verified reaction to the surface via the terminal alkyne moiety. In addition, synchrotron X-ray characterization, including X-ray reflectivity, X-ray fluorescence, and X-ray standing wave measurements, enabled sub-angstrom determination of the position of the bromine atom with respect to the silicon lattice. This structural characterization was quantitatively compared with density functional theory (DFT) calculations, thus enabling the π-conjugation of the terminal carbon atoms to be deduced. The X-ray and DFT results were additionally corroborated with the vibrational spectrum of the organic adlayer, which was measured with sum frequency generation. Overall, these results illustrate that the terminal carbon atoms in 1-bromo-4-ethynylbenzene adlayers on Si(111) retain π-conjugation, thus revealing alkyne molecules as promising candidates for organosilicon electronics and sensing.
UVA tanning is involved in the increased incidence of skin cancers in fair-skinned young women (2009)

Melanomas are the most prevalent cancers in 25-29 yr old females and compose roughly 12% of cancers in 20-40 yr old women; under the age of 40, women have a higher incidence of melanomas than do men. Within the past few decades, the alarming trend to use commercial sunlamps for cosmetic pigmentation is of particular concern, especially since 71% of those patrons are women with 50% of patrons under the age of 29. A major problem may be the use of UVA-rich sunlamps which produce a visible tan but afford little to no protection from subsequent UV exposure. We hypothesize that the additional exposure of adolescents to unnaturally large amounts of UVA from artificial UV sources is implicated in the increasing incidence of malignant melanomas disproportionately in young women.
ChemInform Abstract: THE CHEMICAL DEPOSITION OF BORON‐NITROGEN FILMS (1980)

Abstract Filme der vermutlichen Zusammensetzung BÖNHX werden bei vermindertem Druck durch Reaktion von NH 3 und B 2 H 6 bei Temp. zwischen 250 und 600°C auf Si‐Plättchen abgeschieden.
Building maps of local apparent conductivity of the epicardium with a 2-D electrophysiological model of the heart (2006)

In this paper, we address the problem of estimating the parameters of an electrophysiological model of the heart from a set of electrical recordings. The chosen model is the reaction-diffusion model on the transmembrane potential proposed by Aliev and Panfilov. For this model of the transmembrane, we estimate a local apparent two-dimensional conductivity from a measured depolarization time distribution. First, we perform an initial adjustment including the choice of initial conditions and of a set of global parameters. We then propose a local estimation by minimizing the quadratic error between the depolarization time computed by the model and the measures. As a first step we address the problem on the epicardial surface in the case of an isotropic version of the Aliev and Panfilov model. The minimization is performed using Brent method without computing the derivative of the error. The feasibility of the approach is demonstrated on synthetic electrophysiological measurements. A proof of concept is obtained on real electrophysiological measures of normal and infarcted canine hearts.
Photochemical Remediation of Tetrachloroethylene: Reactor Design, Construction, and Preliminary Results (2003)

A custom designed pilot-scale photochemical remediation reactor is constructed for remediation of vapor-phase volatile organic halocarbons (VOHs), particularly chlorinated hydrocarbons such as PCE (tetrachloroethylene). Ultraviolet (UV) light, when emitted at an effective absorption frequency, cleaves a VOH’s carbon-chloride bond, transforming harmful contaminants to harmless products. The stainless steel reactor is of tubular-shape with an inner diameter of 32 cm and a length of 105 cm. The net volume of the reactor is approximately 73.7 L. Three stainless steel baffles are welded inside the reactor to create a well-mixed vapor phase and uniform UV contact time. Special low-pressure mercury amalgam UV lamps (Heraeus, Inc., Duluth, Ga.) are used as the photoenergy source. Two independent vapor-phase PCE destruction experiments are conducted using different influent contaminant concentrations. Both experiments show a PCE destruction efficiency of over 99%.
Wireless propagation in circular tunnels (2005)

We study models for propagation in circular tunnels. The excitation is either a circular magnetic or circular electric current loop. We produce expressions for the fields in terms of a Fourier transform over the axial variable. We then produce the modes in the lossy structure by contour integration techniques. We include numerical results for the field intensity both as a function of axial distance and as a function of radial distance for several frequencies, radii, and constitutive parameters of interest. We comment in particular concerning the specific form of the field both near to and far from the antenna source.
Enhancement of double-layer capacitance behavior and its electrical conductivity in layered poly (3, 4-ethylenedioxythiophene)-based nanocomposites (2005)

In this letter, we report on the enhanced double-layer capacitance of a layered poly (3, 4-ethylene dioxythiophene) PEDOT-MoO3 nanocomposite, which has been synthesized by a novel microwave irradiation method. The x-ray photoelectron spectroscopy analysis shows the changes in electron density and the shift in binding energy suggesting charge transfer from sulfur atoms upon PEDOT intercalation between MoO3 layers. The room-temperature conductivity for the PEDOT-MoO3 composite is found to be 1.82×10−1Scm−1, which is four orders of magnitude higher than that of the pristine oxide (3.78×10−5Scm−1). The enhanced double-layer capacitance of the PEDOT-MoO3 nanocomposite (∼300Fg−1) compared to that (∼40mFg−1) of pristine MoO3 is attributed to higher electronic conductivity, enhanced bidimensionality, and increase in surface area of the nanocomposite.