Sleeve gastrectomy is a surgical technique producing volume restriction with early satiety and a corresponding fall in the appetite stimulating hormone ghrelin [1]. It may be offered as the first stage of a gastric bypass or duodenal switch or as the definitive surgery for obesity [2]. The technique is particularly useful in the very young and old (short operative time), high risk patients (sim...

Perovskite materials have gathered increased interest over the last decade. Their rapidly rising efficiency, coupled with compatibility solution processing and thin film technology has put perovskite solar cells (PSC) on spotlight of photovoltaic research. On top that, band gap tunability via composition changes makes them a perfect candidate for tandem applications, allowing further harvest ir...

Primordial germ cells (PGCs) are the precursors of the germ cell lineage. A method for the prolonged invitro culture of chicken PGCs, which retain the ability to colonise the gonad when introduced into developing embryos, has been described (van de Lavoir etal., Nature 441 (2006) 766–769). The invitro culture of PGCs provides a useful tool for the creation of transgenic chickens and investigati...

OBJECTIVE To report the initial clinical cases of scarless, single port, transumbilical nephrectomy and pyeloplasty. PATIENTS AND METHODS One patient each underwent single port transumbilical nephrectomy and pyeloplasty using the R-Port (Advanced Surgical Concepts), inserted through a transumbilical incision in both cases. Novel, specialized instruments, curved at the shaft, were used in addi...