The solid-state photo-CIDNP effect

The solid-state photo-CIDNP effect is the occurrence of a non-Boltzmann nuclear spin polarization in rigid samples upon illumination. For solid-state NMR, which can detect this enhanced nuclear polarization as a strong modification of signal intensity, the effect allows for new classes of experiments. Currently, the photo- and spin-chemical machinery of various RCs is studied by photo-CIDNP MAS NMR in detail. Until now, the effect has only been observed at high magnetic fields with 13C and 15N MAS NMR and in natural photosynthetic RC preparations in which blocking of the acceptor leads to cyclic electron transfer. In terms of irreversible thermodynamics, the high-order spin structure of the initial radical pair can be considered as a transient order phenomenon emerging under non-equilibrium conditions and as a first manifestation of order in the photosynthetic process. The solid-state photo-CIDNP effect appears to be an intrinsic property of natural RCs. The conditions of its occurrence seem to be conserved in evolution. The effect may be based on the same fundamental principles as the highly optimized electron transfer. Hence, the effect may allow for guiding artificial photosynthesis

Machine vision for locating objects

Bakalárska práca sa zaoberá tvorbou systému strojového videnia pre lokalizáciu objektov a možnosťami aplikácie tohto typu úlohy strojového videnia. V práci je popísaný dizajn daného systému, a tiež všetky jeho komponenty, ich vlastnosti, a výhody a nevýhody ich použitia. Takisto je zostavená vlastná scéna pre snímanie ukážkového predmetu. Pre vyhodnocovanie obrazu je použitý bežný počítač s programom Vision assistant a jeho nástroje. V tomto programe sú vytvorené a následne porovnané výkonnosti dvoch postupov vyhodnocovania obrazu.The bachelor’s thesis deals with design of machine vision system for object localization and its application possibilities. Design approach, its components and their individual advantages and disadvantages for this type of machine vision system are described. This thesis also includes simple model of machine vision system for object localization using regular PC. For image processing is used Vision Assistant and its tools. Two scripts are made in this software and their performance is compared.