The chick hindbrain starts from a simple and relatively uniform axis and becomes segmented into repeating units, called rhombomeres. The rhombomeres become sites of cell differentiation into specific neurons and the location from which neural crest cells emerge from the neural tube to form the peripheral nervous system, which has only been analyzed at distinct time points due to the lack of a m...

Underwater explosion seriously affects the combat performance and vitality of submarines. In order to improve blast resistance stiffened double cylindrical shells, a new type style that replaces traditional T-shaped stiffeners with circular tube stiffeners, namely O-shaped are studied. A series comparative underwater tests carried out on two scaled shells O stiffeners. Based tests, more detaile...

introduction: the purpose of this retrospective study was to evaluate the outcome following stenting over a period of 10 years in patients with chronic laryngotracheal stenosis.   materials and methods: between 2000–2010, out of 111 patients with laryngotracheal trauma, 71 underwent tracheal        t-stenting for laryngotracheal stenosis in the department of otorhinolaryngology at the governmen...

In this study, selenium was recovered from an industrial dust. After the purification process, the researchers were able to prepare selenium micro powder. The objective of this study was to prepare selenium nano particles by water solution phase method from the micro powders. The results showed that selenium micronized powder and nano particles had high purity. The obtained nanoparticles were t...

Acquired immunodeficiency syndrome (AIDS) manifests a profound deficiency in cellular and humoral immunity causing opportunistic infections with high mortality. Intensive searching for accurate diagnosis, effective treatment, and reliable preventions are in progress. Diagnostic findings include lymphocytopenia, decreased T-helper/T-suppressor ratio and antibodies against human T-lymphotropic re...

background paracentesis is a common bedside therapeutic and diagnostic procedure that requires insertion of a catheter into the peritoneal cavity; however, lack of a specialized fixator for securing the catheter causes frequent catheter kinking and patient discomfort. objectives this study aimed to demonstrate the efficacy of a designed paracentesis fixator in reducing patient discomfort and pr...