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510 results on '"Oto T"'

1. Energy diagram and parameters regarding localized states in InGaN/GaN nanocolumns.

Author

Shimosako, N., Kinjo, K., Inose, Y., Nakaoka, T., Oto, T., Kishino, K., and Ema, K.

Subjects
INDIUM gallium nitride, EXCITON theory
Abstract

The parameters related to the localized states in green-emitting indium gallium nitride (InGaN) have been evaluated by considering the energy diagrams derived by five different methods: (1) the exponential tail of the low-energy side of photoluminescence (PL) spectra, (2) the photon energy dependence of PL decay time, (3) excitation energy dependence of the PL peak energy, (4) the PL excitation spectrum, and (5) the temperature dependence of PL peak energy. The results indicate that the energy diagram of InGaN is divided into four regions: deep localized states, migration region, transition region, and extended states. It is suggested that wider localized states and a narrower transition region are preferable in order to achieve higher PL efficiency. In addition, the dependence of carrier density on PL properties supports the fact of photo-generated carriers forming localized excitons in green-emitting InGaN, although the carriers do not form localized excitons in orange-emitting InGaN and instead exist as localized electrons and holes. [ABSTRACT FROM AUTHOR]

Published
2021
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2. Carrier density dependence of localized carrier recombination dynamics in orange-emitting InGaN/GaN nanocolumns.

Author

Shimosako, N., Inose, Y., Kinjo, K., Nakaoka, T., Oto, T., Kishino, K., and Ema, K.

Subjects
CARRIER density, EXPONENTIAL functions, DENSITY of states, LOW temperatures, EXCITON theory, DISTRIBUTION (Probability theory)
Abstract

The carrier density dependence of photoluminescence (PL) spectra, PL efficiency, and time-resolved PL (TRPL) in InGaN/GaN nanocolumns with orange emission has been measured over a wide range of carrier densities to investigate the carrier recombination dynamics at low and room temperatures. The TRPL decay curves were analyzed by stretched exponential functions to obtain a distribution of the decay times. The results indicate that the emission origin in InGaN with orange emission under low excitation intensity is the recombination of localized electrons and holes, not from localized excitons. Our analysis shows that the total density of localized states is an important factor to increase PL efficiency, which implies that red-emitting InGaN with a high density of localized states due to large indium fluctuation has the potential to achieve high PL efficiency. In addition, we have shown that the stretched exponential function is an effective approach to analyze several carrier relaxation processes with different decay times. [ABSTRACT FROM AUTHOR]

Published
2020
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6. Lobar Anastomosis in Marginal Lung Donors

Author

Haq, I.U., primary, Thomas, M., additional, Hameed, M.A., additional, Al-Abdullah, J.H., additional, Haq, R.M., additional, Massad, E., additional, Kassas, H.A., additional, Oto, T., additional, and Sattar, H.A. Abdul, additional

Published
2022
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11. Analysis of the Change in Sleep Quality in Lung Transplant Recipients

Author

Tokuno, J., primary, Oga, T., additional, Chen-Yoshikawa, T.F., additional, Oto, T., additional, Okawa, T., additional, Okada, Y., additional, Akiba, M., additional, Ikeda, M., additional, Tanaka, S., additional, Yamada, Y., additional, Yutaka, Y., additional, Ohsumi, A., additional, Nakajima, D., additional, Hamaji, M., additional, Isomi, M., additional, Chin, K., additional, and Date, H., additional

Published
2020
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14. Extrapulmonary Problems Limit the Outcome of Lung Transplantation in Idiopathic Pleuroparenchymal Fibroelastosis: A Multi-Center Study in Japan

Author

Shiiya, H., primary, Nakajima, J., additional, Date, H., additional, Chen-Yoshikawa, T., additional, Tanizawa, K., additional, Handa, T., additional, Oto, T., additional, Otani, S., additional, Shiotani, T., additional, Okada, Y., additional, Matsuda, Y., additional, Shiraishi, T., additional, Moroga, T., additional, Minami, M., additional, Funaki, S., additional, Chida, M., additional, Yoshino, I., additional, Hatachi, G., additional, and Sato, M., additional

Published
2020
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15. Malignancy after Lung Transplantation in Japan

Author

Otani, S., primary, Yamane, M., additional, Yokoyama, Y., additional, Chen-Yoshikawa, T.F., additional, Oishi, H., additional, Nakajima, J., additional, Yoshino, I., additional, Nagayasu, T., additional, Shiraishi, T., additional, Chida, M., additional, Shintani, Y., additional, Date, H., additional, Okada, K., additional, and Oto, T., additional

Published
2020
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19. Balloon-expandable Metallic Stents for Airway Diseases

Author

Ohki, T., Seiichiro Sugimoto, Kurosaki, T., Otani, S., Miyoshi, K., Yamane, M., Miyoshi, S., and Oto, T.

Subjects
Bronchial Diseases, respiratory system, equipment and supplies, airway malignancy, respiratory tract diseases, metallic stent, Airway Obstruction, surgical procedures, operative, Clinical Protocols, lung transplantation, Humans, Stents, cardiovascular diseases, Child, Tracheal Stenosis, airway complication, airway disease
Abstract

Stent placement is an essential treatment for airway diseases. Although self-expandable metallic stents and silicone stents are commonly applied for the treatment of airway diseases, these stents are unsuitable for the treatment of small airway diseases encountered in pediatric patients and lung transplant recipients with airway complications. Currently, only vascular balloon-expandable metallic stents are available for the treatment of small airway diseases; however, little research has been conducted on the use of these stents in this field. We have launched a prospective feasibility study to clarify the safety and efficacy of balloon-expandable metallic stents for the treatment of airway diseases.

Published
2016

20. Carrier-density dependence of photoluminescence from localized states in InGaN/GaN quantum wells in nanocolumns and a thin film.

Author

Shimosako, N., Inose, Y., Satoh, H., Kinjo, K., Nakaoka, T., Oto, T., Kishino, K., and Ema, K.

Subjects
CARRIER density, PHOTOLUMINESCENCE, QUANTUM wells, INDIUM gallium nitride films, GALLIUM nitride films
Abstract

We have measured and analyzed the carrier-density dependence of photoluminescence (PL) spectra and the PL efficiency of InGaN/GaN multiple quantum wells in nanocolumns and in a thin film over a wide excitation range. The localized states parameters, such as the tailing parameter, density and size of the localized states, and the mobility edge density are estimated. The spectral change and reduction of PL efficiency are explained by filling of the localized states and population into the extended states around the mobility edge density. We have also found that the nanocolumns have a narrower distribution of the localized states and a higher PL efficiency than those of the film sample although the In composition of the nanocolumns is higher than that of the film. [ABSTRACT FROM AUTHOR]

Published
2015
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23. P2.01-82 Lung Cancer in Lung Transplant Recipients

Author

Otani, S., primary, Shiotani, T., additional, Suzawa, K., additional, Miyoshi, K., additional, Yamamoto, H., additional, Okazaki, M., additional, Sugimoto, S., additional, Yamane, M., additional, Oto, T., additional, and Toyooka, S., additional

Published
2019
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24. MA20.11 Surgical Treatment for Metastatic Lung Tumors from Sarcomas of Soft Tissue and Bone

Author

Yamamoto, H., primary, Namba, K., additional, Yamamoto, H., additional, Toji, T., additional, Soh, J., additional, Shien, K., additional, Suzawa, K., additional, Kurosaki, T., additional, Ohtani, S., additional, Okazaki, M., additional, Sugimoto, S., additional, Yamane, M., additional, Takahashi, K., additional, Kunisada, T., additional, Oto, T., additional, and Toyooka, S., additional

Published
2019
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39. Nickel translocation from seed during germination and growth of young maize plants

Author

Rudolf Kastori, Ivana Maksimović, and Oto T. Doroghazi

Subjects
inorganic chemicals, nickel imbibition of grain, growth, fungi, translocation, food and beverages, chemistry.chemical_element, Chromosomal translocation, Biological value, Biology, maize, Nickel, germination, Agronomy, chemistry, Germination, Shoot, distribution, otorhinolaryngologic diseases, Root mass, General Earth and Planetary Sciences, Imbibition, lcsh:Science (General), lcsh:Q1-390, General Environmental Science
Abstract

Effect of different concentrations of nickel (0, 10-5, 10-4, 10-3 and 10-2 mol Ni/dm3) present at the time of maize seed imbibition, on concentration, distribution and nickel accumulation coefficient in the root and the shoot, biological value of the seed and growth of young plants was investigated. It was found that during germination the nickel from the seed is intensively translocated to the root and shoot of young plants. With increase of applied concentrations of nickel, its concentration in the root and shoot increased as well. Nickel concentration and accumulation coefficient were higher in the root than in the shoot except at the highest applied concentration when the result was opposite. The highest applied concentration of nickel increased percentage of atypical seedlings and non-germinated seeds and decreased percentage of typical seedlings, germination energy and seed germination ability. Nickel implementation did not affect the growth and mass of the shoot. Root mass and length of the primary root decreased at the highest concentration of nickel, which led to change in shoot and root mass ratio. Based on the obtained results it can be concluded that only the highest applied nickel concentration affected the biological value of the seed and the growth of young maize plants, regardless of its intensive accumulation in the root and the shoot, which indicates a significant tolerance of maize in initial phases of growth to presence of high nickel concentration. Intensive translocation of nickel during germination into newly formed organs points to its good mobility and potential possibility to enter the food chain from a contaminated seed.

Published
2010

41. Warm Retrograde Perfusion Can Remove More Fat from Lung Grafts with Fat Embolism in a Porcine Donor Model

Author

Irie, M., primary, Otani, S., additional, Kurosaki, T., additional, Shikatani, Y., additional, Mesaki, K., additional, Hashimoto, K., additional, Tanaka, S., additional, Miyahara, K., additional, Ohki, T., additional, Miyoshi, K., additional, Sugimoto, S., additional, Yamane, M., additional, Miyoshi, S., additional, and Oto, T., additional

Published
2017
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