We show that at the standard laboratory wavelength of CuKa the scattering factors of Cu and NiosFeo2 are identical, thereby making it impossible to distinguish the boundary of the Cu spacer layer in a Cdpermalloy spin valve structure from grazing incidence x-ray reflectivity curves. Use of grazing incidence fluorescence, in conjunction with x-ray reflectivity provides sufficient information to ...

In the present study fungi collections were sampled in the Sangay (SP) and Llanganates (LP) National Parks, from which sequences of the regions of the internal transcribable spacer (ITS1-5.8S-ITS2) of the ribosomal DNA were obtained (RDNA). The taxonomic identification of fungi of the order Xylariales was achieved with the bioinformatic tools, to further study the phylogenetic relationships amo...

In 2019 and 2020, charcoal rot symptoms were observed on lentil plants in fields located the Northwest of Algeria (Mascara Tiaret Relizane). Based morphological molecular identification using internal transcribed spacer (ITS) sequence analyses, two representative isolates identified as Macrophomina pseudophaseolina. Pathogenicity tests performed Koch’s postulates verified fulfilled. To our know...

The genus Ranunculus L., with a worldwide distribution, is the largest member of the Ranunculaceae. Here, nuclear ribosomal internal transcribed spacer (ITS) sequence data and chloroplast trnLF sequence data were used to analyze phylogenetic relationships among members of the annual and perennial (Group Praemorsa, Group Rhizomatosa, Group Grumosa and Group non-Grumosa) species of Ranunculus...

The basidiomycetous yeast Trichosporon faecale is considered to be a non-pathogenic fungus; however, the microorganism has been isolated from clinical specimens in several countries. Trichosporon faecale is classified as type I, II, or III depending on the sequence of the intergenic spacer (IGS) region in its rRNA gene. In this study, 28 T. faecale strains obtained from Japanese subjects and en...

The portion of the internal transcribed spacer 1 found on 20S pre-rRNA accumulates in Saccharomyces cerevisiae lacking 5'----3' exoribonuclease 1, showing that an endonucleolytic cleavage at the 3' terminus of 18S rRNA is involved in the 20S pre-rRNA to 18S mature rRNA conversion. Smaller fragments of the spacer sequence are also found. The exoribonuclease may be involved as a cytoplasmic RNase...