29 research outputs found

    Validation parameters of the developed LC-MS/MS method.

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    <p>Validation parameters of the developed LC-MS/MS method.</p

    Recovery of Zearalenone group(ZEN) in animal feeds.

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    <p>Recovery of Zearalenone group(ZEN) in animal feeds.</p

    Intra- and inter- day precision and accuracy data of Zearalenone group(ZEN) determination (n: Independent replicates).

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    <p>Intra- and inter- day precision and accuracy data of Zearalenone group(ZEN) determination (n: Independent replicates).</p

    Structure of 17-estradiol, a similar chemical substance to ZEN.

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    <p>Structure of 17-estradiol, a similar chemical substance to ZEN.</p

    Determination of the contents (mg/kg) of 6 compounds in feed using the proposed method.

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    <p>Determination of the contents (mg/kg) of 6 compounds in feed using the proposed method.</p

    Multiple reaction monitoring (MRM) conditions for the six Zearalenone group (ZEN) compounds by LC-MS/MS.

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    <p>Multiple reaction monitoring (MRM) conditions for the six Zearalenone group (ZEN) compounds by LC-MS/MS.</p

    sj-docx-1-msj-10.1177_13524585231198754 – Supplemental material for Validation of the International MOGAD Panel proposed criteria

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    Supplemental material, sj-docx-1-msj-10.1177_13524585231198754 for Validation of the International MOGAD Panel proposed criteria by Ki Hoon Kim, Su-Hyun Kim, Na Young Park, Jae-Won Hyun and Ho Jin Kim in Multiple Sclerosis Journal</p

    Novel regulation of aflatoxin B1 biosynthesis in <i>Aspergillus flavus</i> by piperonal

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    <div><p></p><p>The present study investigated its inhibitory role in aflatoxin (AF) biosynthesis. Treating only AFB1- and B2-producing <i>Aspergillus flavus</i> with piperonal completely inhibited AFB1 production with high sclerotial formation, resulting in 20-fold higher AFG2 production. On the other hand, benzodioxole and eugenol suppressed AFB1 production without AFG formation, while methyleugenol showed potent inhibition of AFB1 production with slight production of AFG1. These results indicate that natural products may change aflatoxin biosynthesis, and highlight a novel regulation of AFG2 production by piperonal. It is the first report for chemical regulation on AFG2 production in non-AFG producing-aspergilli.</p></div

    Asymptomatic acute brain lesions in AQP4-IgG seropositive patients with NMOSD during an acute attack of optic neuritis or myelitis.

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    <p>Examples of acute hyperintense lesions in the deep white matter (Aa), periependymal lining of the lateral ventricle (Ba), corpus callosum (Ca), and internal capsule (Da) on T2/fluid-attenuated inversion recovery (FLAIR) images during an acute attack of optic neuritis or myelitis. Note that lesions were markedly decreased in size or resolved on follow-up brain magnetic resonance images (Ab, Bb, Cb, Db). Example of a hyperintense lesion on FLAIR images with a high signal on diffusion-weighted images observed in the left periependymal lining of the lateral ventricle (Ea,Eb) and hypothalamus (Fa,Fb).</p

    Search for vector-like quarks using jet substructure techniques with the CMS experiment

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    In this thesis, a search for pair produced vector-like TT quarks in pppp collision data from the LHC at s=13 TeV\sqrt{s} = 13\,\text{Te}\kern-0.06667em\text{V} is presented. The data were collected with the CMS detector and correspond to an integrated luminosity of up to 2.6 fb−12.6\,\mathrm{fb}^{-1}. Vector-like quarks are hypothetical new particles predicted by many extensions of the Standard Model in which the Higgs boson is a composite state of an unknown strong interaction.Vector-like TT quarks are assumed to decay via three different decay modes to either bWbW, tZtZ or tHtH, with branching fractions that are not fixed and can vary depending on the particular model featuring vector-like quarks.This search focuses on decays of the TT‾T{\overline T} system in which at least one muon or electron is present in the final state, and in which at least one of the TT quarks decays to a top quark and a Higgs boson.As the TT quarks are expected to be quite heavy, their decay products are significantly Lorentz-boosted in the reference frame of the TT‾T{\overline T} system. The subsequent decay products of the Higgs boson are then emitted with a very small angle between them. This search is optimised for the main decay channel of the Higgs boson to two bottom quarks and attempts to reconstruct the two bb quarks within a single jet with a large cone size. Dedicated jet substructure techniques, in combination with algorithms to identify jets originating from the fragmentation of a bb quark, are then used to reconstruct the entire H→bb‾H \rightarrow b{\overline b} decay.The event categories of this search are also combined with the categories of a search for pair-produced TT quarks that focuses on the T→bWT \rightarrow bW decay. This approach provides a high sensitivity to TT‾T{\overline T} production for many different combinations of branching fractions to the three possible decay modes.No excess of the data above the expected background contribution from the Standard Model is observed in any of the final event categories. Upper limits on the TT‾T{\overline T} production cross section are calculated at 95% confidence level and lower mass limits for vector-like TT quarks are set for various assumptions of their decays: for branching fractions corresponding to an electroweak isospin singlet TT quark, masses below 860 GeV\,\text{Ge}\kern-0.06667em\text{V} are excluded, while for an electroweak isospin doublet, TT quarks are excluded with masses up to 830 GeV\,\text{Ge}\kern-0.06667em\text{V}. For other branching fraction combinations, lower mass limits are derived ranging from 710 GeV\,\text{Ge}\kern-0.06667em\text{V} to 940 GeV\,\text{Ge}\kern-0.06667em\text{V}.These exclusion limits are comparable to and for some branching fraction assumptions even higher than exclusion limits set by the CMS experiment using a data set corresponding to 19.7 fb−119.7\,\mathrm{fb}^{-1} at s=8 TeV\sqrt{s} = 8\,\text{Te}\kern-0.06667em\text{V}
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