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Nakai, Y.,Ogimoto, K.,Kuwano, A.,Nakamura, K.,Kato, M. Asian Australasian Association of Animal Productio 1991 Animal Bioscience Vol.4 No.1
A mixed infection of Haemophilus paragallinarum (Hpg), Mycoplasma gallisepticum (MG) and M. synoviae (Ms) was detected in layers of a poultry farm in Iwate prefecture in Japan by pathological, serological and bacteriological investigation. Hpg strains were isolated from three of five birds investigated and all strains were identified to be type C. The Hpg isolates were more susceptible in vitro to a combination of sulfamonomethoxine and ormetoprim (Ektecin) than each of sulfamethoxasol, sulfamonomethoxine, oxytetracycline, tetracycline, streptomycin, erythromycin and thianphinicol. After a total of six days' medication of 1% feed additive Ektecin, symptoms of infectious coryza of hens in the farm almost disappeared and no Hpg was detected even from birds showing nasal discharge.
Oxygen Vacancy and Magnetism of a Room Temperature Ferromagnet Co-doped TiO2
Ikuo Nakai,M. Sasano,K. Inui,T. Korekawa,H. Ishijima,H. Katoh,Y. J. Li,M. Kurisu 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.63 No.3
We report the local structure and the magnetic properties of a Co-doped TiO2 prepared by usingthe solid state reaction of milling with subsequent annealing. The Co-doped TiO2 shows a hysteresisbehavior in the magnetization curve at room temperature, which maintains the same rutile-typestructure as that of the starting material TiO2. The extended x-ray absorption fine structuremeasurement reveals that it contains some oxygen vacancies only around a Co atom which occupiesa Ti site. This supports the oxygen vacancy mediated ferromagnetic exchange mechanism.
Selection of Particle Beam vs. Photon Beam Radiation Therapy for HCC: Japanese Experience
( Hideyuki Sakurai ),( M Iizumi ),( S Shimizu ),( H. Numajiri ),( M. Mizumoto ),( K. Nakai ),( T. Okumura ) 대한간학회 2020 춘·추계 학술대회 (KASL) Vol.2020 No.1
Radiation therapy (RT) using conventional fractionation has not been thought to be curative enough for hepatocellular carcinoma (HCC) and it has not been performed as a high priority in comparison to other standard treatments, such as surgery, percutaneous ablation and transcatheter approach. Because the liver is high sensitive to radiation, especially for patients with liver cirrhosis, non-irradiated normal liver volume must be preserved as much as possible when curative radiation is given for HCC. Since many technological progress has been made in radiation oncology in recent years, RTs are used as an important curative treatment option for liver cancer. Stereotactic body radiotherapy (SBRT), which is included in Japanese national health insurance system, is a technique to accurately concentrate doses three-dimensionally on the target with short-term irradiation of 1-2 weeks. This technique can be used for relatively small tumors less than 5 cm with about 90% local control. Recently, Hara K. et al. reported survival result of SBRT comparing radiofrequency ablation using propensity score analysis, and they concluded that SBRT appears to be an acceptable alternative treatment option for patients who are not candidates for RFA. In addition, in Japan, muticenter prospective study of SBRT for untreated solitary primary HCC, so called STRSPH study, is ongoing. Eligible patients are untreated solitary, Child-Pugh score ≦7, Diameter: 1-5cm, UICC 7th. T1, T2, T3bN0M0, performance status score of 0-2, and 20-85 year-old. The primary endpoint / number of cases of this study are 3-year overall survival / 60 cases. Particle beam therapy (PBT: proton beam therapy, heavy ion beam therapy) has unique character of radiation dose distribution, which is called Bragg peak. PBT can accumulate more dose to the target with minimizing normal liver dose. Primary liver tumor is an important indication that has been specified to be of the highest priority by the American Society for Radiology and Oncology (ASTRO). In fact, most of the studies on PBT for HCC are published by Japan, and rather highly evaluated abroad. Eighteen proton facilities and 6 heavy ion facilities are working now in Japan. The local control rate was approximately 90% and the 5-year survival rate was reported to be approximately 50%. According to the results of our hospital, PBT can control 90% of a large tumor of 10 cm or more. Clinical studies of PBT report favorable therapeutic effects, even for not only large tumors but also tumors in elderly patient. In addition, PBT has been clearly shown to play an important role in the treatment of HCC-related portal vein tumor thrombosis (PVTT). When applied as a curative treatment for bulky tumors with portal vein embolism, median survival time of 27 months has been obtained in our study. The clinical study comparing proton vs surgery, which is non-randomized trial using propensity score, is ongoing in Japan (JCOG1315C). Japanese Society for Radiation Oncology (JASTRO) defined identical rule for indication and treatment method in PBT for HCC, and the all data should be registered in the data-base since 2016. We are facing an aging society, although there are indications of surgery and other local treatment, the number of patients who choose curative radiation therapy due to aging and co-existing disease is increasing. But, the history of radical RT for HCC is still short, and sufficient consensus has not been obtained regarding the criteria for its therapeutic indication. RT may become an option for curative local treatment of HCC, but no specific role for RT has been described in the Japanese treatment guidelines. In the future, it is important to proceed with research to clarify the indication of curative radiation therapy, keeping in mind the comparison with other therapies.
KAMEYA, O.,TSUBOI, M.,ASAKI, Y.,YONEKURA, Y.,MIYAMOTO, Y.,KANEKO, H.,SETA, M.,NAKAI, N.,MIYOSHI, M.,TAKABA, H.,WAKAMATSU, K.,FUKUZAKI, Y.,MORIMITSU, T.,SEKIDO, M. The Korean Astronomical Society 2015 天文學論叢 Vol.30 No.2
We have been performing daily VLBI monitoring of the flux density of Sagittarius (Sgr) $A^{\ast}$ at 22 GHz from February 2013 to August 2014 using a sub-array of the Japanese VLBI Network (JVN). The purpose of this monitoring is to explore the flux density variability at daily time resolution for a period longer than one year with the G2 cloud approaching. The flux density of Sgr $A^{\ast}$ is basically stable during the observational period, though there are some small variations. The average and scattering range are consistent with the previously observed values. We have observed no strong flare of Sgr $A^{\ast}$ although it is near the expected peri-center passing.
Nakai, Y.,Kimura, K.,Sato, M.,Inamoto, T.,Ogimoto, K. Asian Australasian Association of Animal Productio 1994 Animal Bioscience Vol.7 No.4
A total of 526 domestic and experimental animals in Miyagi prefecture, Japan were investigated for fecal carriage of Campylobacter jejuni and Campylobacter coli. C. jejuni was detected in chickens (8.2%), dogs (6.3%), pigs (4.3%), cattle (1.8%) and hamsters (1.4%). C. coli was only detected from pigs (20.7%). Drug susceptibility test was performed on 5 strains of C. jejuni isolated from chickens and 13 strains of C. coli isolated from pigs to tylosin (TS), thianphenicol (TP), carbadox (CDX), chroltetracyclin (CTC), vancomycin (VCM), cefoperazone (CPZ), latamoxef (LMOX), GM were highly effective and CTC, CP and PL were moderately effective against both C. jejuni and C. coli. TS and TPH were moderately effective against C. jejuni; however, they were less effective to C. coli. One strain of C. jejuni against CTC considered to be drug resistant. The results suggest that C. jejuni and C. coli can be controlled by several drugs effectively, although a drug resistant strain exists.
Characteristics of Carrier-generated Field-effect Transistors with Pentacene/Vanadium Pentoxide
M. Minagawa,K. Nakai,A. Baba,K. Shinbo,K. Kato,F. Kaneko,이천 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.58 No.51
In this paper, the driving mechanism of carrier-generated organic field-effect transistors (OFETs) with pentacene and vanadium pentoxide (V_2O_5) layers is discussed. In this study, large on-currents were observed in an OFET with a 35-nm V_2O_5 layer. Devices with aluminum (Al)/pentacene/V_2O_5/Al layer structures were also prepared. These devices exhibited a large current density in spite of their high carrier injection barriers between each layer and the Al electrodes. Moreover, new absorption bands corresponding to the radical cation absorption of pentacene were observed within the absorption spectrum of the pentacene and V_2O_5 mixed layers. It was inferred that the charge transfer (CT) complexes that formed at the interface between the pentacene and V_2O_5 layers were dissociated by the applied gate voltage and that the generated holes contributed to driving the OFETs.
Nakatani, M.,Kohda, C.,Inamoto, T.,Nakai, Y.,Ogimoto, K. Asian Australasian Association of Animal Productio 1994 Animal Bioscience Vol.7 No.4
High performance liquid chromatography (HPLC) analysis was applied for determination of guanine plus cytosine (G + C) contents of DNA of Butyrivibrio fibrisolvens. By values of G + C contents, a reference strain and 20 wild strains of B. fibrisolvens were classified into at least two distinct subgroups, i.e. G + C contents of 18 strains were 38-40 mol% and those of 3 strains including the reference strain were 43-45 mol%. Clear relationships were not observed between G + C contents and biological properties of 21 strains of B. Fibrisolvens.