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Now showing items 33 - 48 of 118061

  • Optimization of a Delta E - E detector for Ca-41 AMS

    Hosoya, Seiji   Sasa, Kimikazu   Matsunaka, Tetsuya   Takahashi, Tsutomu   Matsumura, Masumi   Matsumura, Hiroshi   Sundquist, Mark   Stodola, Mark   Sueki, Keisuke  

    A series of nuclides (C-14, (26)AI, and Cl-36) was measured using the 12UD Pelletron tandem accelerator before replacement by the horizontal 6 MV tandem accelerator at the University of Tsukuba Tandem Accelerator Complex (UTTAC). This paper considers the modification of the accelerator mass spectrometry (AMS) measurement parameters to suit the current 6 MV tandem accelerator setup (e.g., terminal voltage, detected ion charge state, gas pressure, and entrance window material in detector). The Particle and Heavy Ion Transport code System (PHITS) was also used to simulate AMS measurement to determine the best. conditions to suppress isobaric interference. The spectra of Ca-41 and K-41 were then successfully separated and their nuclear spectra were identified; the system achieved a background level of (41)ca/Ca-40 similar to 6 x 10(-14). (C) 2017 Elsevier B.V. All rights reserved.
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  • A violência familiar e a criança e o adolescente com deficiências

    Barros, Ana Cláudia Mamede Wiering de; Deslandes, Suely Ferreira; Bastos, Olga Maria  

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  • Search for a heavy dark photon at future e(+)e(-) colliders

    He, Min   He, Xiao-Gang   Huang, Cheng-Kai   Li, Gang  

    A coupling of a dark photon A' from a U(1)(A') with the standard model (SM) particles can be generated through kinetic mixing represented by a parameter epsilon. A non-zero also induces a mixing between A' and Z if dark photon mass m(A') is not zero. This mixing can be large when m(A') is close to m(z) even if the parameter epsilon is small. Many efforts have been made to constrain the parameter for a low dark photon mass m(A') compared with the Z boson mass m(z). We study the search for dark photon in e(+)e(-) -> gamma A' -> gamma mu(+)mu(-) for a dark photon mass m(A'), as large as kinematically allowed at future e(+)e(-) colliders. For large m(A'), care should be taken to properly treat possible large mixing between A' and Z. We obtain sensitivities to the parameter for a wide range of dark photon mass at planed e(+)e(-) colliders, such as Circular Electron Positron Collider (CEPC), Intemational Linear Collider (ILC) and Future Circular Collider (FCC-ee). For the dark photon mass 20 GeV less than or similar to m(A') less than or similar to 330 GeV, the 2 sigma exclusion limits on the mixing parameter are epsilon less than or similar to 10(-3)-10(-2). The CEPC with root s =3D 240 GeV and FCC-cc with root s =3D 160 GeV are more sensitive than the constraint from current LHCb measurement once the dark photon mass m(A') greater than or similar to 50 GeV. For m(A') greater than or similar to 220 GeV, the sensitivity at the FCC-cc with root s =3D 350 GeV and 1.5 ab(-1 is) better than that at the 13 TeV LHC with 300 fb(-1), while the sensitivity at the CEPC with root s =3D 240 GeV and 5 ab(-1) can be even better than that at 13 TeV LHC with 3 ab(-1) for m(A') greater than or similar to 180 GeV. We also comment on sensitivities of e(+)e(-) -> gamma A' with dark photon decay into several other channels at future e(+)e(-) colliders.
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  • Morte e linguagem no conto “A hora e a vez de Augusto Matraga”

    Ribeiro, Glória Maria Ferreira  

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  • Beauvoir e a situação das mulheres: entre subjetividade e facticidade

    De Souza, Thana Mara  

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  • Beauvoir e a situação das mulheres: entre subjetividade e facticidade

    De Souza, Thana Mara  

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  • Search for a heavy dark photon at future e+e? colliders

    He, Min   He, Xiao-Gang   Huang, Cheng-Kai   Li, Gang  

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  • Atteggiamenti e usi linguistici in Ogliastra e a Cagliari

    Igor Deiana  

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  • Cultura e Sociedade e o tr=C3=A2nsito entre a "alta" e "baixa" cultura

    Leite, Adriana Naomi  

    Looking through the articles that comprise the book Cultura e Sociedade: Brasil e Argentina, this review aims to reflect on how cultural products, especially the so-called cultural industry, have been addressed by sociology of culture in Brazil, and, at the same time, it seeks to identify new possibilities and approaches to this issues.=09
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  • Arte, cultura e conhecimento escolar: a integração é possível!

    De Laplane, Adriana Lia Friszman   Gonçalves, Dayane   Portela, Tatiana Brochado  

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  • "É a macroeconomia, idiota!"

    Lavinas, Lena  

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  • A cidade e o alimento

    Niebuhr, Pedro De Menezes  

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  • 舌癌の診断と治療

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  • Hepatitis E: A Literature Review

    Guerra, Juliana Ayres de Alencar Arrais; Kampa, Katia Cristina; Morsoletto, Daphne Gonçalves Benatti; Junior, Alcindo Pissaia; Ivantes, Cláudia Alexandra Pontes  

    Hepatitis E is the fifth known form of human viral hepatitis. Although not very common in our clinical practice, the incidence in Western countries is increasing. Infection with the hepatitis E virus (HEV) may be related to acute illness, liver failure, chronic hepatitis and cirrhosis. HEV itself is an RNA virus, with eight described genotypes (HEV 1-8), four of which more commonly affect humans and have, thus, been better studied. Besides liver manifestations, genotype 3 is also related to extra-hepatic manifestations, such as neurological, renal and rheumatological. Evolution to chronic disease occurs especially in patients who underwent transplantation, have hematological malignancies requiring chemotherapy, or have infection with the human immunodeficiency virus. The diagnosis may be difficult because of the low availability of tests and due to low sensibility and specificity. The acute form of illness does not have to be treated, but the chronic one does. We present here a literature review of hepatitis E and the relation between chronic hepatitis E and transplantation.
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  • A Holistic Top-down Assessment of E/E Architecture

    Johannes Reuter,Eduard Zimmer  

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  • A Holistic Top-down Assessment of E/E Architecture

    Johannes Reuter   Eduard Zimmer  

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