Sökning: "Bombs"

Visar resultat 1 - 5 av 8 avhandlingar innehållade ordet Bombs.

1. 1. The diagnostic potential of the He I D3 spectral line in the solar atmosphere

   Författare :Tine Libbrecht; Jaime de la Cruz Rodríguez; Jorrit Leenaarts; Göran Scharmer; Valentín Martínez Pillet; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Sun; Line formation; Chromosphere; Spectro-Polarimetry; Flares; Reconnection; Astronomy; astronomi;

   Sammanfattning : The research question of my PhD is in a way a simple one: what can observations of the He I D3 line teach us about the solar chromosphere? This optical spectral line at 5876 Å is generally formed in the upper chromosphere, and is sensitive to the local magnetic field. The He I D3 line is also indirectly sensitive to heating of the transition region and corona, since it is resulting from a transition that occurs between levels in the triplet system of neutral helium. LÄS MER

3. 2. Morgondagens experter : Tekniken, ungdomen och framsteget i populärvetenskap och science fiction i Sverige under det långa 1950-talet

   Författare :Michael Godhe; Martin Kylhammar; Linköpings universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Popular science; science fiction; youth; tomorrow s expens; the idea of progress; the atomic bomb; the cold war; people s home; science fiction; ambivalence; Sweden; Populärvetenskap; science fiction; ungdomar; litteratur och teknik; teknikutveckling; framstegstanken; Sverige; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN;

   Sammanfattning : This study analyzes different views of science, technology and progress in popular science and science fiction published in Sweden during the 'long 1950s' (ca 1946-1964) and how they were related to youth. In the first part, popular technical periodicals are discussed - Teknikes Värld (Technical World) and Teknik för Alla (Technolvgy for Everyone). LÄS MER

4. 3. Forests, Spirits and High Modernist Development : A Study of Cosmology and Change among the Katuic Peoples in the Uplands of Laos and Vietnam

   Författare :Nikolas Århem; Hugh Beach; Jean Michaud; Uppsala universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Katu; Katuic; Nge; Ngeq; Kriang; Vietnam; Laos; Sekong; shifting cultivation; animism; Kulturantropologi; Cultural Anthropology;

   Sammanfattning : This thesis explores how Katuic-speaking indigenous groups in the Central Annamitic Cordillera of Vietnam and Laos understand their environment – hills, streams and forest. Katuic eco-cosmology assumes that the natural landscape is imbued with spirit agents, with whom people must continuously communicate lest misfortune will strike and their livelihoods fail. LÄS MER

5. 4. Warhead penetration in concrete protective structures

   Författare :Håkan Hansson; Anders Ansell; Mattias Unosson; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Warhead penetration; FE analysis; experiment; material modelling; fortifications; Stridsdelspenetration; FE-analyser; experiment; materialmodellering; fortifikationer;

   Sammanfattning : The analysis of penetration of warheads in concrete protective structures is an important part of the study of weapon effects on protective structures. This type of analysis requires that the design load in the form of a warhead is determined, and its characteristic and performance within a protective structure is known. LÄS MER

7. 5. Risk from radionuclides: a frog's perspective : Accumulation of 137Cs in a riparian wetland, radiation doses, and effects on frogs and toads after low-dose rate exposure

   Författare :Karolina Stark; Nils Kautsky; Petra Wallberg; Torbjörn Nylén; Michael Gilek; Dennis Woodhead; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; dose model; mass balance budget; overbank sedimentation; amphibian; phantom; thermoluminescence chip; radiosensitivity; DNA damage; Biology; Biologi;

   Sammanfattning : Threats from man-made radionuclides include waste issues, increasing number of power plants, underground bomb testing, nuclear weapons, and “dirty bombs”. Until recently the ionizing radiation protection system focused on protecting humans with an implied protection of biota. LÄS MER