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Using data samples collected with the BESIII detector at the BEPCII collider at six center-of-mass energies between 4.008 and 4.600 GeV, we observe the processes e+e− → φφω and e+e− → φφφ. The Born cross sections are measured and the ratio of the cross sections σ(e+e− → φφω)/σ(e+e− → φφφ) is estimated to be 1.75 ± 0.22 ± 0.19 averaged over six energy points, where the first uncertainty is statistical and the second is systematic. The results represent first measurements of these interactions.
We study the decays of J/ψ and ψ(3686) to the final states Σ(1385)0Σ¯(1385)0 and Ξ0Ξ¯0 based on a single baryon tag method using data samples of (1310.6±7.0)×106 J/ψ and (447.9±2.9)×106 ψ(3686) events collected with the BESIII detector at the BEPCII collider. The decays to Σ(1385)0Σ¯(1385)0 are observed for the first time. The measured branching fractions of J/ψ and ψ(3686)→Ξ0Ξ¯0 are in good agreement with, and much more precise, than the previously published results. The angular parameters for these decays are also measured for the first time. The measured angular decay parameter for J/ψ→Σ(1385)0Σ¯(1385)0, α=−0.64±0.03±0.10, is found to be negative, different to the other decay processes in this measurement. In addition, the "12\% rule" and isospin symmetry in the J/ψ and ψ(3686)→ΞΞ¯ and Σ(1385)Σ¯(1385) systems are tested.
The decays of χc2→K+K−π0, KSK±π∓ and π+π−π0 are studied with the ψ(3686) data samples collected with the Beijing Spectrometer (BESIII). For the first time, the branching fractions of χc2→K∗K¯¯¯¯¯, χc2→a±2(1320)π∓/a02(1320)π0 and χc2→ρ(770)±π∓ are measured. Here K∗K¯¯¯¯¯ denotes both K∗±K∓ and K∗0K¯¯¯¯¯0+c.c., and K∗ denotes the resonances K∗(892), K∗2(1430) and K∗3(1780). The observations indicate a strong violation of the helicity selection rule in χc2 decays into vector and pseudoscalar meson pairs. The measured branching fractions of χc2→K∗(892)K¯¯¯¯¯ are more than 10 times larger than the upper limit of χc2→ρ(770)±π∓, which is so far the first direct observation of a significant U-spin symmetry breaking effect in charmonium decays.
The decays of χc2→K+K−π0, KSK±π∓ and π+π−π0 are studied with the ψ(3686) data samples collected with the Beijing Spectrometer (BESIII). For the first time, the branching fractions of χc2→K∗K¯¯¯¯¯, χc2→a±2(1320)π∓/a02(1320)π0 and χc2→ρ(770)±π∓ are measured. Here K∗K¯¯¯¯¯ denotes both K∗±K∓ and K∗0K¯¯¯¯¯0+c.c., and K∗ denotes the resonances K∗(892), K∗2(1430) and K∗3(1780). The observations indicate a strong violation of the helicity selection rule in χc2 decays into vector and pseudoscalar meson pairs. The measured branching fractions of χc2→K∗(892)K¯¯¯¯¯ are more than 10 times larger than the upper limit of χc2→ρ(770)±π∓, which is so far the first direct observation of a significant U-spin symmetry breaking effect in charmonium decays.
By analyzing the large-angle Bhabha scattering events e+e− → (γ)e+e− and diphoton events e+e− → (γ)γγ for the data sets collected at center-of-mass (c.m.) energies between 2.2324 and 4.5900 GeV (131 energy points in total) with the upgraded Beijing Spectrometer (BESIII) at the Beijing Electron-Positron Collider (BEPCII), the integrated luminosities have been measured at the different c.m. energies, individually. The results are important inputs for the R value and J/ψ resonance parameter measurements.
Objective: The aim of this study was to report the basic cerebrospinal fluid (CSF) profile in patients with primary progressive multiple sclerosis (PPMS).
Methods: The results of CSF analysis from 254 patients with PPMS were collected at four university hospitals in Germany. Routine CSF parameters and different indices of intrathecal immunoglobulin synthesis were evaluated. We assessed possible correlations between the various CSF parameters and the expanded disability status scale (EDSS) both at the time of lumbar puncture and during the course of the disease.
Results: The median cell count and albumin concentration in the CSF did not deviate from normal values. The CSF-serum albumin-quotient (QALB) was elevated in 29.6% of the patients, while intrathecal immunoglobulin G (IgG) oligoclonal bands (OCBs) were detected in 91.1% of the patients. CSF-lactate levels as well as local IgM- and IgA-synthesis were correlated with the yearly disease progression rate, as assessed by EDSS.
Conclusion: We present the results of the hitherto largest and most detailed CSF biomarker profile in a cohort of 254 patients with PPMS. As reported previously, OCBs are the most sensitive marker for intrathecal IgG synthesis. CSF-lactate concentrations are positively correlated with the progression rate, which might suggest that mitochondrial dysfunction plays a relevant role in PPMS. The negative correlation between intrathecally produced IgM and IgA and disease progression may indicate their hitherto unexplored protective role.
Rationale: The AMP-activated protein kinase (AMPK) is stimulated by hypoxia, and although the AMPKα1 catalytic subunit has been implicated in angiogenesis, little is known about the role played by the AMPKα2 subunit in vascular repair.
Objective: To determine the role of the AMPKα2 subunit in vascular repair.
Methods and Results: Recovery of blood flow after femoral artery ligation was impaired (>80%) in AMPKα2-/- versus wild-type mice, a phenotype reproduced in mice lacking AMPKα2 in myeloid cells (AMPKα2ΔMC). Three days after ligation, neutrophil infiltration into ischemic limbs of AMPKα2ΔMC mice was lower than that in wild-type mice despite being higher after 24 hours. Neutrophil survival in ischemic tissue is required to attract monocytes that contribute to the angiogenic response. Indeed, apoptosis was increased in hypoxic neutrophils from AMPKα2ΔMC mice, fewer monocytes were recruited, and gene array analysis revealed attenuated expression of proangiogenic proteins in ischemic AMPKα2ΔMC hindlimbs. Many angiogenic growth factors are regulated by hypoxia-inducible factor, and hypoxia-inducible factor-1α induction was attenuated in AMPKα2-deficient cells and accompanied by its enhanced hydroxylation. Also, fewer proteins were regulated by hypoxia in neutrophils from AMPKα2ΔMC mice. Mechanistically, isocitrate dehydrogenase expression and the production of α-ketoglutarate, which negatively regulate hypoxia-inducible factor-1α stability, were attenuated in neutrophils from wild-type mice but remained elevated in cells from AMPKα2ΔMC mice.
Conclusions: AMPKα2 regulates α-ketoglutarate generation, hypoxia-inducible factor-1α stability, and neutrophil survival, which in turn determine further myeloid cell recruitment and repair potential. The activation of AMPKα2 in neutrophils is a decisive event in the initiation of vascular repair after ischemia.
The paper introduces the socio-anthropological concept of international representations to examine the relationship between a civilizational rhetoric, the West European and the international politics of otherization and containment of Southeast Europe, and an essentialist and timeless bias in international relations theory, including both radical and constructivist trends...
Der "Beratungs-Wegweiser, Beratungsstellen und Adressverzeichnis" wird vom Studien-Service-Center (SSC) als ergänzendes Angebot zum "Wegweiser für Erstsemester" sowie der Internetseite der Goethe-Universität herausgegeben und enthält studiengangbezogene Informationen und Kontaktdaten. Vertiefende Informationen zu diversitätsunterstützenden Angeboten der zentralen sowie fachübergreifenden Einrichtungen und der Fachbereiche können in der Broschüre "Diversity kompakt. Angebote für Studierende in unterschiedlichen Lebens und Studiensituationen" - herausgegeben von Di3 - nachgeschlagen werden.
Der viersemestrige Master-Studiengang Biochemie leitet sich aus der langjährigen Tradition in biomolekularer Forschung und Lehre in der Frankfurter Forschungslandschaft her und ist stark forschungsorientiert.
Ziel des Studienganges ist es, fachliche Kenntnisse, Fähigkeiten und Methodenkompetenzen zu vermitteln, mit denen die Absolventen in die Lage versetzt werden, in einem forschungsbezogenem Kontext selbstständig zu arbeiten.
Inhaltlich erstreckt sich der Studiengang von zellulärer Biochemie über Strukturbiologie bis hin zur Biophysik/Biophysikalischen Chemie und ermöglicht den Studierenden die Setzung individueller Schwerpunkte. Für eine forschungsnahe Ausbildung auf hohem Niveau ist der Studiengang integral mit dem lokalen Forschungsumfeld verknüpft, was neben dem Heimatfachbereich Biochemie / Chemie / Pharmazie auch die Fachbereiche Physik, Biowissenschaften, Medizin als auch außeruniversitäre Institutionen wie das Max-Planck-Institut für Biophysik und das Paul-Ehrlich-Institut involviert. Den besonderen Frankfurter Schwerpunkten Strukturbiologie und Membranproteinforschung wird im Studiengang Rechnung getragen.
Das Masterstudium am hochmodernen Life-Science Campus der Goethe-Universität bietet in einer einzigartigen Mischung aus Theorie und Praxis in Biochemie und Biophysikalischer Chemie das Rüstzeug für eine Karriere in der universitären sowie industriellen Umgebung. Die Beteiligung diverser Forschungsinstitute am Masterprogramm ermöglicht eine Spezialisierung in Immunologie, Tumorbiologie oder in Membranbiochemie. Die starke Vernetzung der Universität in nationale sowie internationale Forschungsverbünde gewährleistet den Studierenden einen engen Kontakt mit international führenden Wissenschaftlern und die Möglichkeit zu weltweiten Forschungsaufenthalten. ...
kurz und kn@pp news : Nr. 39
(2017)
Nachhaltige Mobilität für alle +++ Welche Rolle spielen die Jüngeren für die Mobilität der Zukunft? +++ Wissenschaftler empfehlen Neuausrichtung der Biodiversitätsforschung +++ A Plastic Ocean – Filmabend und Diskussion mit der Forschungsgruppe PlastX +++ Internationale Konferenz für Meereskunde und Binnengewässer: ISOE-Wissenschaftlerin stellt PlastX vor +++ Wasserressourcen und Klimawandel – Neue Modellierungsmethoden eröffnen Anpassungsstrategien +++ Abwasser als Ressource +++ Wohnraum clever nutzen: Projekt "LebensRäume" gestartet +++ ISOE unterstützt "March for Science" +++ ISOE-Lehrveranstaltungen im Sommersemester +++ Termine +++ Publikationen
CGC aktuell 01/2017
(2017)
Gleichstellungs-Monitor 2016
(2017)
This year’s conference of the AFK (German Association for Peace and Conflict Studies) and the European Peace Research Association (EuPRA) is on "Peace and Conflict Studies from the Margins to the Centre; Rethinking Europe in an Unequal World" (16 – 18 March 2017 in Schwerte (nearby Dortmund), Germany).
The virtual realm of the internet is often seen as an egalitarian world where differences such as those between young and established researchers do not seem so significant. While we do not fully agree with this thesis, we want to use this blog to make a model attempt at providing a platform in which those participating in the conference and others can enter discussion with young students, established researchers, and peace activists.
To make this possible, we started a project in cooperation with the Bretterblog – a young team of researchers who established this blog some years ago. Here we will discuss the topics of the conference and will inform a broader audience about the newest results in peace and conflict research from different countries.
CGC aktuell 02/2017
(2017)