Degradation phenomena of quantum dot light-emitting diodes induced by high electric field.

Quantum dots possess exceptional optoelectronic properties, such as narrow bandwidth, controllable wavelength, and compatibility with solution-based processing. However, for efficient and stable operation in electroluminescence mode, several issues require resolution. Particularly, as device dimensions decrease, a higher electric field may be applied through next-generation quantum dot light-emitting diode (QLED) devices, which could further degrade the device.

Flexible narrowband organic photodiode with high selectivity in color detection.

This study describes the design of a flexible narrowband organic photodiode (OPDs) with a novel structure. A bulk heterojunction of poly(3-hexylthiophene-2,5-diyl) (P3HT) and [6,6]-phenyl-C70-butyric acid methyl ester (PCBM) is introduced as a photoactive layer, with an optimized thickness of 160 nm, and a MoO/Ag/MoO (MAM) multilayer electrode and polyimide (PI) film substrate were used. The OPD with the device architecture of PI/MAM/P3HT:PCBM/Al showed narrowband photodiode performance in the 500-650 nm wavelength range.

Can metformin change the prognosis of pancreatic cancer? Retrospective study for pancreatic cancer patients with pre-existing diabetes mellitus type 2.

Backgrounds: The effect of metformin on survival in patients with pancreatic cancer is controversial.

Aims: To investigate the beneficial effect of metformin in pancreatic cancer patients.

Methods: We retrospectively analyzed patients with pancreatic cancer and pre-existing diabetes mellitus type 2 who were treated at Severance Hospital (Seoul, South Korea) between May 2005 and December 2013.

Enhancement of Emission Lifetime of CNT Emitters by Coating ZnO on the CNT Surface.

Carbon nanotubes (CNTs) have been investigated as field-emission sources owing to their high electrical conductivity and high aspect ratio. However, practical applications demand that the emission lifetime of CNTs be further improved. Since ZnO demonstrates impressive electrical and thermal conductivity, when coated on the surface of CNTs, it can allow the CNT field emitters to endure high electrical stress and high temperature.

Efficacy and safety of everolimus in Korean patients with metastatic renal cell carcinoma.

Purpose: Few studies have investigated the effects of everolimus therapy in Asian populations. This study evaluates the safety and efficacy of everolimus in Korean patients with metastatic renal cell carcinoma (mRCC).

Methods: We retrospectively reviewed records of Korean patients with mRCC (n = 22) who received everolimus between January 2009 and July 2010 and evaluated them for efficacy and safety.

Phase II study of cisplatin with irinotecan as induction chemotherapy followed by chemoradiotherapy for unresectable stage III non-small cell lung cancer.

Background/aim: We evaluated the anti-tumor activity and safety of cisplatin with irinotecan (IP) induction chemotherapy followed by chemoradiotherapy with etoposide/cisplatin (EP).

Patients And Methods: Induction chemotherapy consisted of irinotecan i.v.

Prevalence and associated factors of psychological distress among Korean cancer patients.

Objectives: This study primarily aimed to investigate the prevalence and associated factors of psychological distress among Korean cancer patients. Its secondary objective was to classify mental illnesses among cancer patients with significant psychological distress.

Methods: We administered the Modified Distress Thermometer (MDT), Hospital Anxiety and Depression Scale (HADS), and Center for Epidemiologic Studies-Depression Scale (CES-D) to consecutive, newly diagnosed cancer patients and conducted subsequent psychiatric interviews.

A case of combined hepatocellular-cholangiocarcinoma with favorable response to systemic chemotherapy.

Combined hepatocellular-cholangiocarcinoma (cHCC-CC) is a rare form of primary liver cancer composed of cells with histopathologic features of both hepatocellular carcinoma (HCC) and cholangiocarcinoma (CC). Because of its low incidence, the information on clinical outcomes of cHCC-CC is very limited and there are no published reports describing non-surgical treatment options for cHCC-CC. We report a case of cHCC-CC exhibiting a favorable response to systemic chemotherapy with doxorubicin and cisplatin.

Clinicopathologic features of metachronous or synchronous gastric cancer patients with three or more primary sites.

Purpose: We investigated the clinicopathologic information of patients with gastric cancer with multiple primary cancers (GC-MPC) of three or more sites.

Materials And Methods: Between 1995 and 2009, 105,908 patients were diagnosed with malignancy at Severance Hospital, Yonsei University Health System. Of these, 113 (0.

Sorafenib versus cytotoxic chemotherapy for patients with advanced hepatocellular carcinoma: a retrospective, single-institution study.

Background: Prior to the 2008 advent of sorafenib, traditional cytotoxic agents were the therapeutic mainstay for patients with advanced hepatocellular carcinoma (HCC). We thus undertook a clinical study of sorafinib and conventional cytotoxic therapy for HCC, comparing efficacy and safety.

Methods: From January, 2002 to December, 2009, 173 patients with unresectable HCC were reviewed retrospectively.

Novel sunitinib strategy in metastatic renal cell carcinoma on hemodialysis: intermittent dose of sunitinib after hemodialysis.

The proper dose and schedule of sunitinib have yet to be established for patients with metastatic renal cell carcinoma (RCC) on hemodialysis. We reviewed two patients with metastatic RCC on hemodialysis who had been treated with sunitinib in Yonsei Cancer Center, Yonsei University College of Medicine. Fifty milligrams of sunitinib was administered intermittently after each hemodialysis session (3 or 4 times a week).

Wernicke's encephalopathy in advanced gastric cancer.

Purpose: With their prolonged survival and malnutrition, cancer patients, and especially gastrointestinal (GI) tract cancer patients, can develop Wernicke's encephalopathy (WE). The aim of this study is to remind physicians of the importance of WE and prompt management in patients with GI tract cancer.

Materials And Methods: This study is a retrospective review of 2 cases of WE in advanced gastric cancer (AGC) patients, and we review the literature for cases of GI tract cancer related to WE.