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Time-resolved terahertz spectroscopy reveals the influence of charged sensitizing quantum dots on the electron dynamics in ZnO

Photoinitiated charge carrier dynamics in ZnO nanoparticles sensitized by CdSe quantum dots is studied using transient absorption spectroscopy and time-resolved terahertz spectroscopy. The evolution of the transient spectra shows that electron injection occurs in a two-step process, where the formation of a charge transfer state (occurring in several picoseconds) is followed by its dissociation wi

Studies of molecular mechanisms of telomere maintenance in Naumovozyma castellii

POPULAR SCIENTIFIC SUMMARYI was on my way home, sitting on the bus. My tired eyes swept through the pages of the local newspaper and that was the moment I met Lisa. She had previously been diagnosed with cancer. She had recovered and was back to her daily life. Unfortunately the cancer has come back and it has spread to several organs. Lisa as a mother of two kids, as a wife, as a daughter, as a sTelomeres are special DNA-protein structures that protect ends of chromosomes from being recognized as double-strand breaks. Telomeres consist of tandemly repeated units of TG-rich DNA and associate with telomere-specific proteins.When a cell replicates its chromosomes, a certain piece of DNA is lost from chromosomal ends due to the ´´ end replication problem´´. This progressive shortening of telo