Nano-mechanical behavior of ultra-stable amorphous metallic thin films

Metallic glass has amorphous structure that behave mechanically like solids but show catastrophic failure due to shear band propagation induced by short range order structure, and they are generally produced by quenching. Recently, it is observed that the slower cooling rate provides the larger time available for atoms to rearrange structure before freezing in glassy state, leading to glass transition temperature and thermal stability. These glasses with enhanced thermal stability synthesized by controlled cooling rate make it useful in various field such as mechanical or oxidation protection material. However, mechanical behavior for metallic glass with extraordinary thermodynamic and kinetic stability has not been studied. In this research, we developed a ultrastable metallic glass thin film by physical vapor deposition process at ambient temperature. Thermal stability is investigated using acceleration testing. Mechanical properties are measured using in-situ tensile testing and discuss thermal stability and fracture behavior dependent on compositio

Single incision thoracoscopic right upper lobectomy with systematic lymph node dissection

Video-assisted thoracic surgery (VATS) provides less postoperative pain, preservation of the immune response and shorter recovery period, compared with thoracotomy. However, many patients complain of postoperative pain and paresthesia because VATS requires 3 or 4 incisions including a utility incision of 3–5 cm. To overcome this problem, single incision thoracoscopic surgery has emerged; this technique has been adopted for lung cancer surgery since 2010. Complete mediastinal lymph node dissection is the major role of lung cancer surgery. We describe a case of a right upper lobectomy with complete mediastinal lymph node dissection via single incision thoracosopic surgery

Green growth and green new deal policies in Korea

노트 : A Paper for the GURN/ITUC workshop on "A Green Economy that Works for Social Progress

New perspectives on the management of hepatocellular carcinoma with portal vein thrombosis

Despite advances in the treatment of hepatocellular carcinoma (HCC), managing HCC with portal vein thrombosis (PVT) remains challenging. PVT is present in 10-40% of HCC cases at the time of diagnosis and its therapeutic options are very limited. Current guidelines mainly recommend sorafenib for advanced HCC with PVT, but surgery, transarterial chemoemolization, external radiation therapy, radioembolization, transarterial infusion chemotherapy, and combination therapy are also still used. Furthermore, several new emerging therapies such as the administration of immunotherapeutic agents and oncolytic viruses are under investigation. This comprehensive literature review presents current and future management options with their relative advantages and disadvantages and summary data on overall survival

Transarterial chemoembolization using drug eluting beads for the treatment of hepatocellular carcinoma: Now and future

Transarterial chemoembolization (TACE) using doxorubicin-eluting beads (DEBs) have been introduced as a novel device which ensures more sustained and tumor-selective drug delivery and permanent embolization compared to conventional TACE with lipiodol. Studies highlighting the use of TACE with DEBs for the treatment of hepatocellular carcinoma (HCC) have shown similar or better results compared to conventional TACE with lipiodol. TACE with DEBs is increasingly being performed interchangeably with conventional TACE. This review assessed the characteristics, clinical outcomes and future direction of TACE with DEBs compared to conventional TACE