39 research outputs found
Forschungsinformationsmanagement
Die Bedeutung von Forschungsberichterstattung für Universitäten nimmt kontinuierlich zu. So müssen Universitäten Berichtspflichten gegenüber Geldgebern und Ministerien erfüllen, Informationen zur internen Entscheidungsfindung und Steuerung bereithalten sowie Rechenschaft über ihre Geldgeber gegenüber der Öffentlichkeit ablegen. Forschungsberichterstattung ist somit von hoher strategischer Bedeutung für die Steuerungs- und Wettbewerbsfähigkeit der Universitäten sowie für die Sichtbarkeit und Transparenz ihrer Forschungsleistungen nach außen. Gleichzeitig stellen die steigenden Anforderungen an die Forschungsberichterstattung die Universitäten in Baden-Württemberg vor schwierige Aufgaben, da die benötigten Daten zu Forschungsaktivitäten oft nur verteilt und in uneinheitlicher Form in den Institutionen vorliegen. Dies führt zu einem hohen administrativen Aufwand in der Forschungsberichterstattung. Aus diesem Grund empfiehlt auch der Wissenschaftsrat den Hochschulen, ihre Forschungsberichterstattung zu professionalisieren. Dieses Papier des Think Tank Forschungsinformationsmanagement schlägt daher vor, dass sich die baden-württembergischen Universitäten zu einem Verbund zum Thema Forschungsinformationssysteme („BW.CRIS“) zusammenschließen. Ziel des Verbundes ist, Kompetenzen in diesem Bereich zu bündeln, gemeinsame Lösungen für gemeinsame Herausforderungen zu erarbeiten und im gegenseitigen Austausch von den Erfahrungen der anderen Universitäten zu lernen. Im Verbund erhalten die Landesuniversitäten zudem eine starke Stimme und können so die Landesinteressen gegenüber Softwareanbietern, der KFiD oder weiteren Akteuren auf Bundesebene erfolgreich vertreten. Ein zentraler Erfolgsfaktor für den Anschub und die nachhaltige Arbeit eines solchen Verbundes wäre seine gezielte Unterstützung auf Landesebene. Eine solche baden-württembergische Landesinitiative zum Thema Forschungsinformationssysteme würde die baden-württembergischen Universitäten in der Digitalisierung ihrer Forschungsberichterstattung erheblich voranbringen und so die strategische Steuerungsfähigkeit der Hochschulleitungen maßgeblich erhöhen
Novel recombinant mycobacterium bovis BCG, ovine atadenovirus, and modified vaccinia virus ankara vaccines combine to induce robust human immunodeficiency virus-specific CD4 and CD8 T-cell responses in rhesus macaques
Mycobacterium bovis bacillus Calmette-Guérin (BCG), which elicits a degree of protective immunity against tuberculosis, is the most widely used vaccine in the world. Due to its persistence and immunogenicity, BCG has been proposed as a vector for vaccines against other infections, including HIV-1. BCG has a very good safety record, although it can cause disseminated disease in immunocompromised individuals. Here, we constructed a recombinant BCG vector expressing HIV-1 clade A-derived immunogen HIVA using the recently described safer and more immunogenic BCG strain AERAS-401 as the parental mycobacterium. Using routine ex vivo T-cell assays, BCG.HIVA401 as a stand-alone vaccine induced undetectable and weak CD8 T-cell responses in BALB/c mice and rhesus macaques, respectively. However, when BCG.HIVA401 was used as a priming component in heterologous vaccination regimens together with recombinant modified vaccinia virus Ankara-vectored MVA.HIVA and ovine atadenovirus-vectored OAdV.HIVA vaccines, robust HIV-1-specific T-cell responses were elicited. These high-frequency T-cell responses were broadly directed and capable of proliferation in response to recall antigen. Furthermore, multiple antigen-specific T-cell clonotypes were efficiently recruited into the memory pool. These desirable features are thought to be associated with good control of HIV-1 infection. In addition, strong and persistent T-cell responses specific for the BCG-derived purified protein derivative (PPD) antigen were induced. This work is the first demonstration of immunogenicity for two novel vaccine vectors and the corresponding candidate HIV-1 vaccines BCG.HIVA401 and OAdV.HIVA in nonhuman primates. These results strongly support their further exploration
Colloidal ZnO quantum dots in ultraviolet pillar microcavities
Three dimensional light confinement and distinct pillar microcavity modes in the ultraviolet have been observed in pillar resonators with embedded colloidal ZnO quantum dots fabricated by focused ion beam milling. Results from a waveguide model for the mode patterns and their spectral positions are in excellent agreement with the experimental data
VENUS, Virtual ExploratioN of Underwater Sites
International audienceThe VENUS project aims at providing scientific methodologies and technological tools for the virtual exploration of deep underwater archaeology sites. Underwater archaeological sites, for example shipwrecks, offer extraordinary opportunities for archaeologists due to factors such as darkness, low temperatures and a low oxygen rate which are favourable to preservation. On the other hand, these sites cannot be experienced first hand and today are continuously jeopardised by activities such as deep trawling that destroy their surface layer. The VENUS project will improve the accessibility of underwater sites by generating thorough and exhaustive 3D records for virtual exploration. The project team plans to survey shipwrecks at various depths and to explore advanced methods andtechniques of data acquisition through autonomous or remotely operated unmanned vehicles with innovative sonar and photogrammetry equipment. Research will also cover aspects such as data processing and storage, plotting of archaeological artefacts and information system management. This work will result in a series of best practices and procedures for collecting and storing data. Further, VENUS will develop virtual reality and augmented reality tools for the visualisation of and immersive interaction with a digital model of an underwater site. The model will be made accessible online, both as an example of digital preservation and for demonstrating new facilities of exploration in a safe, cost-effective and pedagogical environment. The virtual underwater site will provide archaeologists with an improved insight into the data and the general public with simulated dives to the site. The VENUS consortium, composed of eleven partners, is pooling expertise in various disciplines: archaeology and underwater exploration, marine robotics and instrumentation, knowledge representation and photogrammetry, virtual reality and digital data preservation
Tailoring Spatiotemporal Light Confinement in Single Plasmonic Nanoantennas
Plasmonic nanoantennas are efficient devices to concentrate
light
in spatial regions much smaller than the wavelength. Only recently,
their ability to manipulate photons also on a femtosecond time scale
has been harnessed. Nevertheless, designing the dynamical properties
of optical antennas has been difficult since the relevant microscopic
processes governing their ultrafast response have remained unclear.
Here, we exploit frequency-resolved optical gating to directly investigate
plasmon response times of different antenna geometries resonant in
the near-infrared. Third-harmonic imaging is used in parallel to spatially
monitor the plasmonic mode patterns. We find that the few-femtosecond
dynamics of these nanodevices is dominated by radiative damping. A
high efficiency for nonlinear frequency conversion is directly linked
to long plasmon damping times. This single parameter explains the
counterintuitive result that rod-type nanoantennas with minimum volume
generate by far the strongest third-harmonic emission as compared
to the more bulky geometries of bow-tie-, elliptical-, or disk-shaped
specimens
Novel Recombinant Mycobacterium bovis BCG, Ovine Atadenovirus, and Modified Vaccinia Virus Ankara Vaccines Combine To Induce Robust Human Immunodeficiency Virus-Specific CD4 and CD8 T-Cell Responses in Rhesus Macaques▿
Mycobacterium bovis bacillus Calmette-Guérin (BCG), which elicits a degree of protective immunity against tuberculosis, is the most widely used vaccine in the world. Due to its persistence and immunogenicity, BCG has been proposed as a vector for vaccines against other infections, including HIV-1. BCG has a very good safety record, although it can cause disseminated disease in immunocompromised individuals. Here, we constructed a recombinant BCG vector expressing HIV-1 clade A-derived immunogen HIVA using the recently described safer and more immunogenic BCG strain AERAS-401 as the parental mycobacterium. Using routine ex vivo T-cell assays, BCG.HIVA401 as a stand-alone vaccine induced undetectable and weak CD8 T-cell responses in BALB/c mice and rhesus macaques, respectively. However, when BCG.HIVA401 was used as a priming component in heterologous vaccination regimens together with recombinant modified vaccinia virus Ankara-vectored MVA.HIVA and ovine atadenovirus-vectored OAdV.HIVA vaccines, robust HIV-1-specific T-cell responses were elicited. These high-frequency T-cell responses were broadly directed and capable of proliferation in response to recall antigen. Furthermore, multiple antigen-specific T-cell clonotypes were efficiently recruited into the memory pool. These desirable features are thought to be associated with good control of HIV-1 infection. In addition, strong and persistent T-cell responses specific for the BCG-derived purified protein derivative (PPD) antigen were induced. This work is the first demonstration of immunogenicity for two novel vaccine vectors and the corresponding candidate HIV-1 vaccines BCG.HIVA401 and OAdV.HIVA in nonhuman primates. These results strongly support their further exploration