A previous study highlighted the effect of vocal technique on the singing voice accuracy of trained singers. The intervals' precision between the notes of the tune was altered when the singers used Western operatic singing technique. In order better to understand these results, we have recorded two different melodies sung with two different vocal techniques. A large panel of trained singers (n ...

Terry L. Erwin is Curator of Coleoptera at the Smithsonian Institution, National Museum of Natural History, in Washington, D.C. and editor-in-chief of ZooKeys. He generated significant controversy in 1982—which continues to this day—when he published an estimate of 30 million species on Earth, which was substantially more than the nearly one million described species. He was born 1 December 194...

this article deals with a comparative analysis of phonological dissimilarities between two iranian dialects in the southern borders of the caspian sea, e.g. taleshi in gilan and kelardashti in mazandaran. the differences are classified and analyzed with an emphasis on the kelardasht’s rudbarak and talish’s alian dialects in two parts of vowel and consonant diversities.

The foundation of psychiatric/mental health nursing is the relationship between nurse and patient. Caring for persons with mental illness within the context of this relationship requires knowledge of the individual. To gain this knowledge, understanding the patient's perceptions and concerns is essential. Research suggests that this understanding does not always occur. The study reported here e...