Characterization of fully-evaporated perovskite solar cells and photodetectors under high-intensity pulsed proton irradiation.

This study investigates the impact of proton irradiation on perovskite devices fabricated fully through vacuum deposition. Exposure to irradiation induces changes in both electrical and optical properties. The analysis reveals that the main factors influencing the observed performance changes in solar cells are a significant reduction in shunt resistance and a minor increase in series resistance, with minimal alterations in recombination dynamics.

Teledentistry: A Tool to Promote Continuing Education Actions on Oral Medicine for Primary Healthcare Professionals.

Background: Difficulties in diagnosis of oral mucosal lesions are a significant cause of delayed oral cancer diagnosis, and this difficulty may be due to gaps in knowledge. This study evaluated the diagnostic skills of primary healthcare professionals regarding oral cancer and presented them with an e-learning course.

Materials And Methods: Forty-seven primary healthcare professionals (32 dentists and 15 nondentists) enrolled in a 24-h course on oral medicine delivered through an e-learning platform.

Test systems to study transcriptional regulation and promoter activity in Bacillus megaterium.

Plasmid-located (multi-copy) and chromosomally located (single-copy) promoter test systems were developed for Bacillus megaterium by making use of the homologous beta-galactosidase-encoding bgaM gene. The multi-copy system facilitates rapid promoter analyses and promoter trapping, whereas the single-copy system, integrated into the chromosome, allows investigation of tightly regulated promoters. As a prerequisite for both the multi- and the single-copy systems, a beta-galactosidase-deficient B.

Molecular characterization of the operon comprising the spoIV gene of Bacillus megaterium DSM319 and generation of a deletion mutant.

According to sequence analysis, the spoIV-locus of Bacillus megaterium DSM 319 is 1,185 bp long; it is the second gene of a sporulation operon, which altogether contains three open reading frames. The ORF preceding spoIV encodes a putative polypeptide with 94 amino acids; the 3rd ORF of the operon has 972 bp corresponding to 324 amino acids. The operon is flanked on both sides by palindromic sequences, probably representing Rho-independent terminators.

Cloning, expression, and carbon catabolite repression of the bamM gene encoding beta-amylase of Bacillus megaterium DSM319.

The bamM gene from Bacillus megaterium DSM319 encoding an extracellular beta-amylase was isolated and completely sequenced. Chromosomal inactivation by deletion mutagenesis resulted in total loss of amylolytic activity, indicative of a single starch-degrading enzyme. Functional characterization of the expressed protein revealed a maltogenic enzyme exhibiting optimal activities at pH 7.

Regulation of beta-galactosidase expression in Bacillus megaterium DSM319 by a XylS/AraC-type transcriptional activator.

The beta-galactosidase-encoding bgaM gene of Bacillus megaterium DSM319 and the divergently orientated bgaR operon were isolated and sequenced. Both traits are subject to catabolite repression. A set of single-gene replacement mutants was generated and used to analyze gene function.