gebhart/patrepeval huggingface dataset:
EMS Induction of Early Flowering Mutants in Spring Rape (<i>Brassica napus</i>) (1992)

Abstract Studies were undertaken to induce early flowering mutants by ethyl methanesulphonate (EMS) treatments of Brassica napus seeds. EMS treatments for 12 h of a highly inbred B. napus line TBS had adverse effects on M 1 plant development and fertility only when concentrations were greater than 1%. However, an EMS concentration of 1.5% did not reduce M 1 plant fertility to an extent which significantly reduced production of M 2 seeds. Genetic changes induced by EMS treatment and affecting flowering time were of three main types: (1) Changes within a polygenic system reflected by increased variation in flowering time among M 2 families. As the increase in variation was due primarily to a higher frequency of later flowering plants, these polygenic changes would be of little value in developing better‐adapted cultivars. (2) Induction of a recessive mutation at a major gene locus which caused M 3 plants homozygous for the mutant gene to flower at least 20 days earlier than the parental line TB8. (3) Induction of a dominant mutation at a major gene locus which affects flowering time by causing a substantial reduction in vernalization requirement. M 2 plants carrying the mutant gene flowered as early as 59 days before the parental line. These major gene mutations could be rapidly exploited in the development of agronomically superior cultivars for short‐season, lower rainfall environments in Western Australia.
The Hedgehog signalling pathway regulates autophagy (2012)

Autophagy is a highly conserved degradative process that removes damaged or unnecessary proteins and organelles, and recycles cytoplasmic contents during starvation. Autophagy is essential in physiological processes such as embryonic development but how autophagy is regulated by canonical developmental pathways is unclear. Here we show that the Hedgehog signalling pathway inhibits autophagosome synthesis, both in basal and in autophagy-induced conditions. This mechanism is conserved in mammalian cells and in Drosophila, and requires the orthologous transcription factors Gli2 and Ci, respectively. Furthermore, we identify that activation of the Hedgehog pathway reduces PERK levels, concomitant with a decrease in phosphorylation of the translation initiation factor eukaryotic initiation factor 2α, suggesting a novel target of this pathway and providing a possible link between Hedgehog signalling and autophagy.
Análisis y diseño de controladores lineales para el convertidor elevador (boost) bidireccional en corriente (2005)

Los convertidores de voltaje DC-DC juegan dentro de la tecnologia actual un papel fundamental, actuan como puentes de transferencia de energia entre fuentes y cargas, ambas de corriente continua, que no son compatibles por naturaleza, por ejemplo, una carga puede necesitar ser alimentada con un potencial “v” mientras que la fuente disponible provee un voltaje “v1“que puede ser mayor o menor a “v”. El convertidor “Boost” o “Elevador” ofrece especial interes, pues como su nombre lo indica, puede proveer en su salida un voltaje mayor al que posea en la entrada y que ademas es de implementacion relativamente simple. Es de vital interes el conocer las limitaciones que se tienen para controlar el comportamiento de este tipo de dispositivos, para esto se creara un modelo del sistema que permita conocer las restricciones con las que se cuenta al trabajar con estas estructuras.
Fluorescence diagnosis of upper respiratory tract infections (2015)

The pharyngitis and laryngitis are respiratory tract infections highly common. Pharyngitis can be accompanied by fever, especially if caused by a systemic infection. Laryngitis is an inflammation of your voice box (larynx) from irritation or infection. The conventional treatment is the antibiotics administration, which may be responsible by an increase of identification of bacterial strains resistant to drug. This fact associated to high incidence of these infections become important to develop new technologies for diagnosis. This study aims to evaluate the use of widefield fluorescence imaging for the characterization of oropharynx infections, in order to diagnose the bacteria colonization. The imaging system for wide field fluorescence visualization is Evince® (MMOptics, Sao Carlos, SP, Brazil) coupled to an Apple iPhone® cell phone device. The system consists of Light Emitting Diodes (LEDs) operating in the violet blue region centered at green-red spectrum 450 nm and optical filters that allow viewing of fluorescence. A tongue depressor was adapted to Evince® for mouth opening. The same images were captured with white light and fluorescence with an optical system. The red fluorescence may be a bacterial marker for physiological monitoring of oropharynx infection processes. The bacterial biofilm on tissue were assigned to the presence of protoporphyrin IX. This work indicates that the autofluorescence of the tissue may be used as a non-invasive technique to aid in the oropharynx infection diagnostic.
Fibrous ceramic insulation (1982)

Some of the reusable heat shielding materials used to protect the Space Shuttles, their manufacturing processes, properties, and applications are discussed. Emphases is upon ceramic materials. Space Shuttle Orbiter tiles are discussed.
Kinetics of the Iodide-catalyzed Reaction between Cerium(IV) and Arsenic(III)<sup>1</sup> (1956)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics of the Iodide-catalyzed Reaction between Cerium(IV) and Arsenic(III)1John Stanley Yates and Henry C. ThomasCite this: J. Am. Chem. Soc. 1956, 78, 16, 3950–3953Publication Date (Print):August 1, 1956Publication History Published online1 May 2002Published inissue 1 August 1956https://pubs.acs.org/doi/10.1021/ja01597a023https://doi.org/10.1021/ja01597a023research-articleACS PublicationsRequest reuse permissionsArticle Views103Altmetric-Citations5LEARN 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
Extraction of scandium with tetraphenyl imidodiphosphate and its sulfur analogues, and the radiation stability of the reagent (1990)

Solvent extraction of scandium from perchloric or hydrochloric acid aqueous systems into benzene solutions of tetraphenyl imidodiphosphate, (PhO) 2 P(O)NHP(O)(PhO) 2 (HA), and its sulfur analogues containing the P(O)NHP(S) or P(S)NHP(S) groups was studied. Behaving as weak acids in the aqueous phase, the reagents form complex extractable compounds ScA 3 with scandium. The extraction constants were measured and found lower for the sulfur analogues than for the oxygen reagent. The configuration changes induced in the reagent by gamma irradiation from a 60 Co source were studied by examining the extraction of scandium with it and by 31 P NMR measurements. Whereas the changes in the solid reagent are not very marked and appear only at doses in excess of 800 kGy, the reagent dissolved in benzene exhibits configuration changes even on the application of doses at the 10 kGy level. This fact is related to the presence of benzene and dissolved oxygen in the system.
Anguidine: a broad phase II study of the Southeastern Cancer Study Group. (1984)

Anguidine, a phase II agent, was used to treat 276 patients with solid tumors. The overall evaluability rate was 68%. Hematologic toxicity was substantial but not prohibitive. There were no complete responses, two partial responses, and 12 stabilizations.
Use of a hospital emergency service by children and adolescents for primary care. (1969)

This study was planned to determine the extent to which the emergency service of a large general hospital in Vancouver was providing a primary medical care function for children and adolescents. The data were collected during 14-day study periods in each season of the year. Medical data and physician urgency rating were obtained on all patients. Demographic and socioeconomic data and data pertaining to patterns of medical care were obtained by interview of a one-third sample.The study identified a group of patients receiving primary medical care for non-urgent and non-traumatic conditions. This group resided close to the hospital and had lower socioeconomic indices than the remainder of the patients.The trend to utilize the emergency department for reasons other than the accident and emergency function was confirmed. These findings will be incorporated in the planning of the New Children's Hospital in Vancouver with the provision of separate facilities for the care of non-urgent attenders.
Human albumin is effective in prevention of severe OHSS (2001)

Severe OHSS is an iatrogenic, potentially life-threatening complication of controlled ovarian hyperstimulation. Intravenous human albumin, administered around the time of oocyte retrieval has been claimed to prevent development of this serious event. It was hypothesized that albumin acts through its osmotic pressure and through the binding and inactivation, at a critical time of the cycle, of an hCG-mediated factor secreted by the corpora lutea, that impedes capillary integrity and leads to the development of OHSS. The present article evaluates the available evidence in the medical literature whether albumin is effective in reducing the risk of severe OHSS. Several trials have been identified, most of them were retrospective and few were prospective randomized controlled trials. Although albumin prophylaxis cannot offer absolute protection, all three randomized placebo-controlled trials, that have been published so far, demonstrated a significant reduction in the incidence of severe OHSS.
Neutrophil-activating polypeptides IL-8 and NAP-2 induce identical signal transduction pathways in the regulation of lysosomal enzyme release. (1991)

Interleukin-8 (IL-8/NAP-1), the neutrophil-activating peptide 2 (NAP-2), and formyl-peptides (fMLP) have been described as potent stimulators for human neutrophils (PMN). We have compared the mechanism of signal transduction induced by these factors during neutrophil activation (elastase release), by using activators and inhibitors and by direct measurement of the enzymatic activity of kinases. Moreover, costimulation kinetics of the combined factors were analyzed. Our results show that each of these stimulators induces elevated levels of cAMP, indicating the activation of adenylate-cyclase. Further results obtained with the kinase inhibitor H-7 and the cAMP analogue dibutyryl-cAMP (dbcAMP) gave evidence that cAMP-dependent kinases are involved in the down-regulation of the activation process. Degranulation could not be prevented by the inhibitor W-7, nor did the treatment of cells with calcium ionophore (A23187) lead to elevation of intracellular calcium levels. Both phenomena exclude the participation of calcium calmodulin-dependent kinases. Further results obtained with the novel protein kinase C (PKC) inhibitor BM 41440 as well as by direct measurement of PKC enzyme activity demonstrated the involvement of PKC in fMLP-mediated stimulation but not with IL-8/NAP-1 or NAP-2. Analysis of costimulation experiments conducted with these three factors and TPA confirmed these results and gave evidence that fMLP activates two different signaling pathways, one of which is PKC dependent, while the other is not. Moreover, our data indicate that NAP-2, IL-8/NAP-1, and fMLP use identical PKC-independent transduction mechanisms.
Dynamic load balance for approximate parallel simulations with consistent hashing (2015)

Parallel simulation is a powerful tool to evaluate the performance of large-scale systems. However when it comes to simulating large scale Web search engines, the parallel simulation execution can introduce imbalance among processors because event occurrence is driven by user behavior which is unpredictable, making events take place in different parts of the system in an irregular manner. In this paper, we study the impact of load balance strategies on the performance of a parallel simulation strategy. In particular, we present a consistent hashing load balance algorithm aimed to reduce queuing waiting times, evenly distribute the costs of executing events among processors, and more importantly migration of logical processes only occurs between neighbor processors. We use a Web search engine composed by services deployed on a cluster of processors as the application case study. Our simulations are driven by actual query log traces. We evaluate our proposed load balance algorithm in terms of running time, communication, memory consumption and accuracy. Results show that the proposed load balance strategy is capable of reducing the execution times of simulations and maintaining quality of results.
A 24/60GHz dual-band millimeter-wave on-chip monopole antenna fabricated with a 0.13-&#x03BC;m CMOS technology (2009)

A 24 / 60GHz dual-band millimeter-wave on-chip antenna fabricated in TSMC 0.13-μm CMOS process is presented here. We design the feeding network by using the coplanar waveguide (CPW) structure. For the dual-band design, there are two major current paths to radiate. To avoid the harmonic frequency band of the low frequency-band, we add two strips to couple the harmonic frequency of the low frequency-band. Besides, the two strips let the higher frequency-band performance better. At this work, the simulator is based 3-D full-wave EM solver, Ansoft HFSS. The on-chip antenna size is 0.76 X 1.045 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> . The bandwidth of the lower band and higher is about 180MHz and 700MHz, respectively. The simulated gain is about −9dB for 24GHz and about 1dB for 60GHz
Effects of air gun firing time vatiations of signal stability (1992)

Air gun arrays typically contain many single air gun units. These are mechanical devices and their firing time, though remarkably accurate, cannot approach that of electrical networks in spite of the introduction many years ago of computer management systems . Gun timing variations depend upon many factors which include the size and design of the air gun itself, the interral pressure, the condition of the gun and its internal wals and veear rings, the condition of the solenoid and the degree, if any, to which electrical leakage may be present in the wiring. The magnitude of these timing variations may range from orders of magnitude below that of the seismic trace sampling period which is exceptionally good to about the same order of magnitude as the sampling period which gives cause for concern. To be more precise, timing errors may vary from numbers less than +/-0 .1 msec to numbers like 2 or 4 msec or even more in severe cases . Certainly, clearer insight into the ranges of timing errors, their causes and effects on the stability of the seismic signal would be helpful .
Eosinophils in the blood of hematopoietic stem cell transplanted patients are activated and have different molecular marker profiles in acute and chronic graft‐versus‐host disease (2014)

While increased numbers of eosinophils may be detected in patients with graft-versus-host disease (GVHD) following hematopoietic stem cell transplantation, it is not known if eosinophils play a role in GVHD. The aims of this study were to determine: whether eosinophils are activated during GVHD; whether the patterns of activation are similar in acute and chronic GVHD; and the ways in which systemic corticosteroids affect eosinophils. Transplanted patients (n = 35) were investigated for eosinophil numbers and the expression levels of 16 eosinophilic cell surface markers using flow cytometry; all the eosinophil data were analyzed by the multivariate method OPLS-DA. Different patterns of molecule expression were observed on the eosinophils from patients with acute, chronic, and no GVHD, respectively. The molecules that provided the best discrimination between acute and chronic GVHD were: the activation marker CD9; adhesion molecules CD11c and CD18; chemokine receptor CCR3; and prostaglandin receptor CRTH2. Patients with acute or chronic GVHD who received systemic corticosteroid treatment showed down-regulation of the cell surface markers on their eosinophils, whereas corticosteroid treatment had no effect on the eosinophil phenotype in the patients without GVHD. In summary, eosinophils are activated in GVHD, display different activation profiles in acute and chronic GVHD, and are highly responsive to systemic corticosteroids.
CO Adsorption on Reconstructed Ir(100) Surfaces from UHV to mbar Pressure: A LEED, TPD, and PM-IRAS Study (2016)

Clean and stable surface modifications of an iridium (100) single crystal, i.e., the (1 × 1) phase, the (5 × 1) reconstruction, and the oxygen-terminated (2 × 1)-O surface, were prepared and characterized by low energy electron diffraction (LEED), temperature-programmed desorption (TPD), infrared reflection absorption spectroscopy (IRAS) and polarization modulation IRAS (PM-IRAS). The adsorption of CO in UHV and at elevated (mbar) pressure/temperature was followed both ex situ and in situ on all three surface modifications, with a focus on mbar pressures of CO. The Ir(1 × 1) surface exhibited c(4 × 2)/c(2 × 2) and c(6 × 2) CO structures under low pressure conditions, and remained stable up to 100 mbar and 700 K. For the (2 × 1)-O reconstruction CO adsorption induced a structural change from (2 × 1)-O to (1 × 1), as confirmed by LEED, TPD, and IR. For Ir (2 × 1)-O TPD indicated that CO reacted with surface oxygen forming CO<sub>2</sub>. The (5 × 1) reconstruction featured a reversible and dynamic behavior upon CO adsorption, with a local lifting of the reconstruction to (1 × 1). After CO desorption, the (5 × 1) structure was restored. All three reconstructions exhibited CO adsorption with on-top geometry, as evidenced by IR. With increasing CO exposure the resonances shifted to higher wavenumber, due to adsorbate-adsorbate and adsorbate-substrate interactions. The largest wavenumber shift (from 2057 to 2100 cm<sup>-1</sup>) was observed for Ir(5 × 1) upon CO dosing from 1 L to 100 mbar.
Exploiting inter-frame correlations in compound video coding (2011)

Compound images/videos are a mixture of text, graphics and natural images/video. Despite extensive research on compound image coding, rare research on compound video coding has been reported in the literature. This paper proposes three approaches to exploit inter-frame correlations in compound video. One is the motion compensation aided base color (MCA-BC) approach, which handles a special type of motion on text/graphics parts: foreground/background color change. The other two are motion-compensated residue base color and index map (MC-BCIM) and the motion-compensated residue scalar quantization (MC-RSQ) approach, both of which exploit spatial correlations among motion compensated residues. Experiments based on the High-Efficiency Video Coding (HEVC) reference software HM0.9 show that the proposed scheme largely improves the coding efficiency for more than 3dB on compound video with text/graphics and still keep a comparable performance on natural video content.
Modeling and Design of PWM based Sliding Mode Controller for Active Clamp Forward Converter (2018)

This paper presents the step by step design procedure to model and design of sliding mode controller for Forward Converter with Active Clamp circuit (ACFC). Brief review on working principle and mathematical modeling of Converter is first given. The importance of sliding mode controller for forward converter and design procedure of the considered controller is described in detail. And the validity of designed controller and achievement of desired compensation is confirmed by the obtained results. Finally the results are analyzed by applying disturbances at source end and at load side.
Audio retrieval using perceptually based structures (2002)

Despite growing interest in multimedia data management, audio retrieval has received little attention. In part, this can be attributed to existing unstructured audio representations that do not easily lend themselves to content based retrieval and especially browsing. This paper aims to address this oversight. It begins by reviewing existing techniques and the specific problems posed by unstructured representations. Some characteristics of audio perception that may be exploited in the solution to these problems are then presented. A new structured representation is then detailed that is designed to support content based retrieval and browsing. Finally, the suitability of this representation for its intended purpose is discussed.
Impact of Microalgae-Bacteria Interactions on the Production of Algal Biomass and Associated Compounds (2016)

A greater insight on the control of the interactions between microalgae and other microorganisms, particularly bacteria, should be useful for enhancing the efficiency of microalgal biomass production and associated valuable compounds. Little attention has been paid to the controlled utilization of microalgae-bacteria consortia. However, the studies of microalgal-bacterial interactions have revealed a significant impact of the mutualistic or parasitic relationships on algal growth. The algal growth, for instance, has been shown to be enhanced by growth promoting factors produced by bacteria, such as indole-3-acetic acid. Vitamin B12 produced by bacteria in algal cultures and bacterial siderophores are also known to be involved in promoting faster microalgal growth. More interestingly, enhancement in the intracellular levels of carbohydrates, lipids and pigments of microalgae coupled with algal growth stimulation has also been reported. In this sense, massive algal production might occur in the presence of bacteria, and microalgae-bacteria interactions can be beneficial to the massive production of microalgae and algal products. This manuscript reviews the recent knowledge on the impact of the microalgae-bacteria interactions on the production of microalgae and accumulation of valuable compounds, with an emphasis on algal species having application in aquaculture.
Synthesis and Characterization of a Quasi‐One‐Coordinate Lead Cation (2004)

Easily lead: The demethylation of [PbMe(2,6-Trip2C6H3)] (Trip=2,4,6-iPr3C6H2) with tris(perfluorophenyl)borane in toluene affords [Pb(2,6-Trip2C6H3)⋅(η2-MeC6H5)][B(Me)(C6F5)3] (see picture), in which the lead center is singly bound to the 2,6-Trip2C6H3 moiety and also weakly solvated by toluene.