Showing papers by "Masahiro Yamamoto published in 1996"
TL;DR: In this article, the authors demonstrate room temperature pulsed operation of nitride based multi-quantum-well (MQW) laser diodes with cleaved mirror facets grown on a conventional C-face sapphire substrate.
Abstract: We demonstrate room temperature pulsed operation of nitride based multi-quantum-well (MQW) laser diodes with cleaved mirror facets grown on a conventional C-face sapphire substrate. Cleavage was performed along the direction of the sapphire substrate, and the resultant facet was analyzed using an atomic force microscope (AFM) and theoretical calculation. A single peak emisson, at a wavelength of 417.5 nm, with a full width at half-maximum of 0.15 nm, was obtained. The threshold current density of the laser was 50 kA/cm2 and a voltage for the threshold current was 20 V.
162 citations
TL;DR: Observations suggest a functional and possible physical association of SR‐A with Lyn in THP‐1‐derived macrophages, and also imply a possible involvement of Lyn inSR‐A signal transduction.
50 citations
Journal Article•
TL;DR: In this paper, the authors demonstrate room temperature pulsed operation of nitride based multi-quantum-well (MQW) laser diodes with cleaved mirror facets grown on a conventional C-face sapphire substrate.
Abstract: We demonstrate room temperature pulsed operation of nitride based multi-quantum-well (MQW) laser diodes with cleaved mirror facets grown on a conventional C-face sapphire substrate. Cleavage was performed along the (1120) direction of the sapphire substrate, and the resultant facet was analyzed using an atomic force microscope (AFM) and theoretical calculation. A single peak emisson, at a wavelength of 417.5 nm, with a full width at half-maximum of 0.15 nm, was obtained. The threshold current density of the laser was 50 kA/cm 2 and a voltage for the threshold current was 20V.
4 citations
Journal Article•
TL;DR: Hepatic arterial infusion chemotherapy using implantable reservoir was performed for liver metastases of gastric cancer and the therapeutic effects were evaluated, and 4 among 10 cases responding to HAIC showed subsequent extrahepatic spread of the disease.
Abstract: Hepatic arterial infusion chemotherapy (HAIC) using implantable reservoir was performed for liver metastases of gastric cancer and the therapeutic effects were evaluated. A catheter was placed in the hepatic artery via left subclavian artery or by direct insertion at laparotomy. Cisplatin, adriamycin and 5-FU were administered. The liver metastases of gastric cancer without unresectable primary tumors and hepatectomy were divided into two groups, 16 HAIC cases (11 synchronous, 5 metachronous metastases) and 23 systemic chemotherapeutic cases (10 synchronous, 13 metachronous metastases). As a result, HAIC revealed a 62.5% response rate. The 50% survival period was 395 days for HAIC, and it was significantly prolonged compared with 198 days for systemic chemotherapy (p < 0.01). But 4 among 10 cases responding to HAIC showed subsequent extrahepatic spread of the disease. Treatment of these extra-hepatic lesions is difficult.
2 citations