OpenAccess

Infections with Streptococcus pyogenes are among the most important diseases caused by bacteria and are responsible for around 500,000 deaths every year. In 2024, macrolide-resistant S. [...]

HSP10 is a well-known human co-chaperone that interacts with HSP60 to comprise the HSP60/10 chaperonin complex which upholds mitochondrial proteostasis. HSP10 also demonstrates independent roles in binding to misfolded proteins and interacts with several amyloidogenic client proteins. [...]

Low-temperature superconductivity is treated at an introductory level. The topics include Meissner-Ochsenfeld effect and London equations, thermodynamic properties of the superconducting state, type I and II superconductors, flux quantisation, superconductors in microwave fields and superconducting quantum interference effects. [...]

The basics of superconductivity are outlined with special emphasis on the features which are relevant for the application in magnets and radio frequency cavities for high energy particle accelerators. The special properties of superconducting accelerator magnets are described in detail: design principles, magnetic field calculations, magnetic forces, quench performance, persistent magnetization currents and eddy currents. [...]

Nach einer Einführung in die Grundbegriffe der speziellen Relativitätstheorie möchte ich aus der Vielzahlmöglicher Themenkomplexe drei herausgreifen, mit denen ich mich während meiner Berufstätigkeit befasst habe und die die Auswirkungen der Relativitätstheorie in Physik und Technik in schöner Weise verdeutlichen:1) Elementarteilchenphysik und Beschleuniger2) Das Magnetfeld als relativistischer Effekt3) Der Freie-Elektronen-Laser, eine relativistische StrahlungsquelleDiese Ausarbeitung enthält mehr Material als meineinstündiger Vortrag in Bad Honnef. Um dem Leser dasNachvollziehen der Rechnungen zu erleichtern, wird auchder mathematische Formalismus der Relativitäts- undQuantentheorie ausführlicher dargestellt..

1) Algebraische Behandlung des harmonischen Oszillators 2) Quantisierung des elektromagnetischen Feldes 3) Emission und Absorption von Strahlung 4) Weitere Betrachtungen zur Quantenfeldtheorie

The first direct measurement of gravitational waves by the LIGO and Virgo collaborations has opened up new avenues to explore our Universe. This White Paper outlines the challenges and gains expected in gravitational-wave searches at frequencies above the LIGO/Virgo band. [...]

Highest resolution X-ray microscopy requires high numerical aperture (NA) optics ofexcellent quality which allow to focus X-ray beams to small focal points. MultilayerLaue lenses (MLLs) are a new type of diffractive optic with the capability to focushard X-rays with high efficiency to nanometer spots. [...]

Das vorliegende Manuskript ist eine erweiterte Fassung der Vorlesungen an der UniversitätHamburg, die ich wiederholt im Rahmen des Kurses Physik III für Studierende des 3. Semestersgehalten habe. [...]

When an electronically excited atom or molecule is embedded in a chemical environment as, e.g., in a liquid or a loosely bound cluster, it can de-excite through mechanisms where neighboring atoms or molecules are actively participating in the decay: either by donating or accepting energy or electrons. For such nonlocal decay channels, nuclear dynamics play a crucial role as they have a direct impact on the decay efficiency itself. [...]