2,809 research outputs found

    A Literary Journey Back in Time

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    Before I began writing, I reflected on the effect literature has had on my life. I brainstormed different experiences in which I found literature to be very influential. I talked with various people including my parents and past teachers to ensure the accuracy of the various childhood stories I decided to write about. When it came time to put the final draft together, I focused on my various experiences with literature and the grand effect it has had on my life. I also incorporated why I value being a literate person today as a university student. Editor\u27s note: For this paper, the author received the journal\u27s award for Best Literacy Narrative ($100 prize)

    Pride of Missouri: The Adventures of Missouri Farm Boys in 1940s World Conflict

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    In collaboration with the Museum of Missouri Military History, an exhibition for the 203rd Coast Artillery Battalion (Anti-Aircraft) housed in the National Guard Headquarters exhibit case will be on display March 2020 through April 2020 in Jefferson City, Missouri. The exhibit will show the Missouri men deployed for military service, newspaper articles the men wrote, and objects the men brought back from the time of service. The paper is a historical narrative essay about the mobilization of the 203rd Coast Artillery Battalion (Anti-Aircraft) during World War II, and from the research, a physical exhibit and an online exhibit have been created. The goal of the project is to encourage people to remember World War II by telling the story of Missourians who went to war, and the importance of hometown identity and pride by showing how the men kept the connection to hometowns by writing to the hometown newspapers

    Pride of Missouri: The Adventures of Missouri Farm Boys in 1940s World Conflict

    Get PDF
    In collaboration with the Museum of Missouri Military History, an exhibition for the 203rd Coast Artillery Battalion (Anti-Aircraft) housed in the National Guard Headquarters exhibit case will be on display March 2020 through April 2020 in Jefferson City, Missouri. The exhibit will show the Missouri men deployed for military service, newspaper articles the men wrote, and objects the men brought back from the time of service. The paper is a historical narrative essay about the mobilization of the 203rd Coast Artillery Battalion (Anti-Aircraft) during World War II, and from the research, a physical exhibit and an online exhibit have been created. The goal of the project is to encourage people to remember World War II by telling the story of Missourians who went to war, and the importance of hometown identity and pride by showing how the men kept the connection to hometowns by writing to the hometown newspapers

    Neutron activation of natural zinc samples at kT = 25 keV

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    The neutron-capture cross sections of 64Zn, 68Zn, and 70Zn have been measured with the activation technique in a quasistellar neutron spectrum corresponding to a thermal energy of kT = 25 keV. By a series of repeated irradiations with different experimental conditions, an uncertainty of 3% could be achieved for the 64Zn(n,g)65Zn cross section and for the partial cross section 68Zn(n,g)69Zn-m feeding the isomeric state in 69Zn. For the partial cross sections 70Zn(n,g)71Zn-m and 70Zn(n,g)71Zn-g, which had not been measured so far, uncertainties of only 16% and 6% could be reached because of limited counting statistics and decay intensities. Compared to previous measurements on 64,68Zn, the uncertainties could be significantly improved, while the 70Zn cross section was found to be two times smaller than existing model calculations. From these results Maxwellian average cross sections were determined between 5 and 100 keV. Additionally, the beta-decay half-life of 71Zn-m could be determined with significantly improved accuracy. The consequences of these data have been studied by network calculations for convective core He burning and convective shell C burning in massive stars

    Dispersion of longitudinal momentum distributions induced in fragmentation reactions

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    On the basis of systematic measurements of fragmentation reactions, which provide a detailed overview on the velocity distributions of residual nuclei, an improved description of the kinematical properties of the fragmentation residues is established. This work is dedicated to the fluctuations of their momentum distributions. In contrast to previous investigations, limited to close-to-projectile fragments, we extended our study to the entire production range, down to the lightest observed fragments. In this context, beside the contribution of abrasion and evaporation processes, we considered the effect of the thermal break-up on the width of the momentum distributions. Using approximated theoretical descriptions of the different reaction stages, a new analytical formula for the variance of the momentum distribution is derived, which is well adapted to technical applications.Comment: 14 pages, 3 figures, background info. at http://www-wnt.gsi.de/charms

    New Stellar (n,γ)(n,\gamma) Cross Sections and The "Karlsruhe Astrophysical Database of Nucleosynthesis in Stars"

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    Since April 2005 a regularly updated stellar neutron cross section compilation is available online at http://nuclear-astrophysics.fzk.de/kadonis. This online-database is called the "Karlsruhe Astrophysical Database of Nucleosynthesis in Stars" project and is based on the previous Bao et al. compilation from the year 2000. The present version \textsc{KADoNiS} v0.2 (January 2007) includes recommended cross sections for 280 isotopes between 1^{1}H and 210^{210}Po and 75 semi-empirical estimates for isotopes without experimental information. Concerning stellar (n,γ)(n,\gamma) cross sections of the 32 stable, proton-rich isotopes produced by the pp process experimental information is only available for 20 isotopes, but 9 of them have rather large uncertainties of \geq9%. The first part of a systematic study of stellar (n,γ)(n,\gamma) cross sections of the pp-process isotopes 74^{74}Se, 84^{84}Sr, 102^{102}Pd, 120^{120}Te, 130^{130}Ba, 132^{132}Ba, 156^{156}Dy, and 174^{174}Hf is presented. In another application \textsc{KADoNiS} v0.2 was used for an modification of a reaction library of Basel university. With this modified library pp-process network calculations were carried out and compared to previous results.Comment: Proceedings "International Conference on Nuclear Data for Science and Technology 2007", Nice/ Franc

    A new Time-of-flight wall for R3BR^3B

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    Stellar (n,gamma) cross sections of p-process isotopes PartI: 102Pd, 120Te, 130,132Ba,and 156Dy

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    We have investigated the (n,gamma) cross sections of p-process isotopes with the activation technique. The measurements were carried out at the Karlsruhe Van de Graaff accelerator using the 7Li(p,n)7Be source for simulating a Maxwellian neutron distribution of kT = 25 keV. Stellar cross section measurements are reported for the light p-process isotopes 102Pd, 120Te, 130,132Ba, and 156Dy. In a following paper the cross sections of 168Yb, 180W, 184Os, 190Pt, and 196Hg will be discussed. The data are extrapolated to p-process energies by including information from evaluated nuclear data libraries. The results are compared to standard Hauser-Feshbach models frequently used in astrophysics.Comment: 13 pages, 4 figure
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