— The position of interstitial atoms involved in the Wcenter in KBr crystal has been determined with the double alignment channeling technique. An optical absorption measurement of KBr crystal irradiated with protons or heliums at liquid nitrogen temperature assured that the V4-center is the predominant radiation-induced interstitial defect. A well collimated beam of 1.25 Me V He ions was incid...

für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under a Creative Commons Attribution 4.0 International License. Dieses Werk wurde im Jahr 2013 vom Verlag Zeitschrift für Naturforschung in Zusammenarbeit mit der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. digitalisiert und unter folgender Lizenz veröffentlicht: Creative Commons Namen...

für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under a Creative Commons Attribution 4.0 International License. Dieses Werk wurde im Jahr 2013 vom Verlag Zeitschrift für Naturforschung in Zusammenarbeit mit der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. digitalisiert und unter folgender Lizenz veröffentlicht: Creative Commons Namen...

Epilepsy is a brain disorder defined by a person having two or more unprovoked seizures. Most seizures are caused by hyper excitable neuronal activity and may affect a number of behaviors, including motor, sensory, cognitive or autonomic functions. A broad range of seizure types can occur, and many are linked to mutations in ion channels. This review focuses on four ion channel mutations direct...

Rutting is one of the most important distresses in asphalt pavements due to its frequency. Rutting or channeling, could be classified in three types: 1) mechanical deformation (rutting in subgrade or base), 2) plastic flow (unstable asphalt layer), and 3) wheel path consolidation. The plastic flow of bituminous mixture depends on many factors; one of this is the type of asphalt used in the mixt...

Abstract The efficiency of deflection high-energy negatively charged particles by a bent crystal using planar channeling and stochastic mechanism is compared. comparison carried out on the example antiprotons with kinetic energy from 1 to 14 GeV, which will be achievable accelerators Facility for Antiproton Ion Research. showed that both mechanisms make it possible deflect part antiproton beam ...

Radioactive Cu atoms were accelerated to 60 keV at the online isotope separator ISOLDE at CERN, and implanted into a type IIa natural diamond sample to a dose of 2 x 10 cm. The channeling of β particles and conversion electrons emitted in the decay of Cu and Zn*, respectively, were monitored about the three major axial directions with a two dimensional position-sensitive detector. The electron ...

A novel bienzyme-channeling sensor was constructed by entrapping glucose oxidase (GOD) and horseradish peroxidase (HRP) in the mesopores of well-ordered hexagonal mesoporous silica structures (SBA-15). The SBA-15 mesoporous materials accelerated the electron transfer between the entrapped HRP and electrode. Both HRP and GOD retained their catalytic activities in the bienzyme-entrapped SBA-15 fi...