Sökning: "in-flight experiments"

Visar resultat 1 - 5 av 7 avhandlingar innehållade orden in-flight experiments.

  1. 1. Spectroscopic Studies of Isomers Produced in Relativistic Projectile Fragmentation and In-Flight Fission

    Författare :Milena Mineva; Kärnfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Projectile fragmentation; nuclear structure; isomeric states; lifetimes; production rates; Kärnfysik; isomeric ratios; Nuclear physics; Fysicumarkivet A:000; in-flight fission;

    Sammanfattning : This thesis is based on a number of experiments performed at the FRagment Separator (FRS) at the Gesellschaft für Schwerionenforschung mbH (GSI) in Darmstadt, Germany, in which heavy-ion reactions at relativistic energies have been used to produce nuclei far from stability. In April 1999 projectile fragmentation of 208Pb at 1 GeV/nucleon was used to study so called K-isomers in the neutron-rich isotopes of Lu (Z=71) to Hg (Z=80). LÄS MER

  2. 2. Transition delay in boundary-layer flows via reactive control

    Författare :Nicolò Fabbiane; Dan S. Henningson; Shervin Bagheri; Denis Sipp; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; flow control; drag reduction; net energy saving; adaptive control; model-based control; optimal control; flat-plate boundary layer; laminar-to- turbulent transition; plasma actuator; direct numerical simulation; in-flight experiments; strömningsstyrning; friktionsreduktion; netto energibesparing; adaptiv styrning; modellbaserad styrning; optimal kontroll; gränsskikt öve en plan platta; laminärt till turbulent omslag; plasma aktuator; DNS; flyg prov; Teknisk mekanik; Engineering Mechanics;

    Sammanfattning : Transition delay in boundary-layer flows is achieved via reactive control of flow instabilities, i.e. Tollmien-Schlichting (TS) waves. Adaptive and model-based control techniques are investigated by means of direct numerical simulations (DNS) and experiments. LÄS MER

  3. 3. Tilted Foils Nuclear Spin Polarization and Measurement with Coulomb Excitation

    Författare :Hans Törnqvist; Chalmers University of Technology; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Tilted; Foils; Polarization; Excitation; Coulomb; Nuclear; Spin;

    Sammanfattning : Developing new experimental tools is essential to expand the possibilites of probing the structure of atomic nuclei. The better the currently known properties of nuclei can be manipulated, the more information can be extracted from data collected in nuclear reaction experiments. LÄS MER

  4. 4. Assessment of Aircraft Radar Cross-Section for Detection Analysis

    Författare :Björn Persson; Martin Norsell; Peter Bull; Ulf Ringertz; João Tasso de Figueiredo Borges de Sousa; Försvarshögskolan; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Försvarssystem; Military Technology; Aerospace Engineering; Flyg- och rymdteknik;

    Sammanfattning : Hiding from and surprising an opponent are tactics that have been used in warfare throughout history. They were features that aircraft originally possessed when they were first used in military operations. However, development of military technology is an endless struggle between advances in technology and counter technology. LÄS MER

  5. 5. Olfactory mechanisms of host selection in phytophagous insects : behavior, neuron, and receptor

    Författare :Muhammad Binyameen; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :;

    Sammanfattning : The most challenging tasks for phytophagous insects are the location and selection of mates, food sources, and oviposition sites, all crucial for survival and reproduction. To perform these tasks insects rely largely on their sense of smell (olfaction). LÄS MER