At the beginning of 20th century operational issues Otto engine had not been fully resolved. The work presented here seeks to chronicle development one alternative design pathways, namely replacement for gas exchange mechanism more conventional poppet valve arrangement with that a sleeve valve. There have several successful engines built these devices, which number attractive features superior ...

the occurrence of mast cells is studied in the normal facial nerve and in the facial nerve post mortem exam of patients with chronic suppurative otitis media without associated facial paralysis. a small number of mast cells were found in the normal facial nerve. these cells were usually located in close proximity to the endoneural and epineural blood vessels. the number of mast cells was increa...

PWR reactor vessel (RV) head has a number of penetration nozzles, including nozzles with thermal sleeve for control rod drive mechanisms (CRDM) and without thermal sleeve. These nozzles are typically made of nickel-based Alloy 600 or 690 and welded to the inside of the RPV head. Cracking has been reported in Alloy 600 nozzles and the J-weld regions. These nozzles are normally inspected by eddy ...

UNLABELLED Currently, laparoscopic sleeve gastrectomy is one of bariatric surgeries most commonly performed in the world. The most frequent complications of surgeries of this type, with the highest mortality rate, include bleeding into the GI tract and peritoneal cavity, and sleeve staple line leaks. These severe complications prolong the hospital stay, and often are a cause of patient's death....