META-ANALYSIS: THE POSSIBILITY OF ATROPHY OF TESTICLE IN ACUTE TESTICULAR APPENDAGE PROBLEMS IN CHILDREN

A meta-analysis of extensive statistical data of «acute scrotal» syndrome in children was made. The two databases were considered. The first consisted of 1342 observations and described the nosologic structure of «acute scrotal» syndrome in children. The second included 440 patients and showed the long-term results of conservative treatment in children with acute scrotal problems. When a mathematical analysis of initial data was carried out, the authors determined, that the possibility of atrophy of stricken gonad in conservative treatment of acute hydatid problems belonged to the segment from 0,303 till 0,684

Internal photoemission of electrons from 2D semiconductor/3D metal barrier structures

Understanding the energy alignment of electronic bands, which originate from ultrathin MoS2 layers and metal electrodes attached to them, is crucial for the design of MoS2-based electronic devices. We have applied internal photoemission spectroscopy (IPE) to analyze this alignment. We demonstrate that IPE can yield the barrier heights in the metal/two-dimensional semiconductor/insulator stacks when the top metal electrode is sufficiently thin for allowing both the photoexcitation of electrons and their transport towards the insulator. The electron barrier at the interface between Al and monolayer (1ML) of MoS2 is estimated at 0.7 eV, and this value explains the experimentally observed attenuated quantum yield contribution from the aluminum. Based on the relative energies of the low-energy threshold position and the Fermi level of aluminum at the interface with the SiO2 insulator, we provide a simple explanation for the observed current photoinjection at the interface between aluminum and 1ML MoS2

Atomistic Investigation of the Electronic Structure, Thermal Properties and Conduction Defects in Ge-rich GexSe1-x Materials for Selector Applications

status: publishe