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Characteristics of a 4-phase Segment Type Switched Reluctance Motor
Higuchi, Tsuyoshi,Yamaguchi, Daiki,Abe, Takashi,Yokoi, Yuichi Journal of International Conference on Electrical 2014 Journal of international Conference on Electrical Vol.3 No.3
A novel segment type switched reluctance motor (SRM) as a rare-earth-less motor is proposed. The torque was increased by 40% and the radial force was decreased by 76% compared with the same size usual variable reluctance (VR) type SRM. Increasing the average torque, however, caused increasing torque ripple. In this paper we develop a 4-phase segment type SRM and show that the torque ripple can be decreased well.
Effect of Biopsy Technique on the Survival Rate of Malignant Melanoma Patients
Yamashita, Yutaro,Hashimoto, Ichiro,Abe, Yoshiro,Seike, Takuya,Okawa, Katsumasa,Senzaki, Yuichi,Murao, Kazutoshi,Kubo, Yoshiaki,Nakanishi, Hideki Korean Society of Plastic and Reconstructive Surge 2014 Archives of Plastic Surgery Vol.41 No.2
Background Cutaneous malignant melanoma has a poor prognosis. The detrimental effect of incisional biopsies on the outcome of malignant melanoma has been debated. The aim of this study was to determine the effect of the presence and type of biopsy on the prognosis of malignant melanoma. Methods The medical records of 109 malignant melanoma patients treated at Tokushima University Hospital from 1983 to 2007 were reviewed. After excluding 28 cases with stage 0 disease or incomplete data, 81 cases were analyzed in detail with respect to patient sex, age, tumor site, clinical stage at diagnosis, presence of ulceration or lymph node metastasis, and prognosis. The five-year survival and five-year disease-free survival rates of patients who underwent incisional or excisional biopsies were compared with those who did not undergo a biopsy. Results The male-to-female ratio was 1:1.19. The mean age was 61.3 years (range, 19-93 years). The most common site was a lower extremity, and the most common clinical stage was stage II. No significant differences in clinicopathological features, five-year survival rates, and five-year disease-free survival rates were observed among the three groups. Conclusions The presence and type of biopsy neither affected the metastatic rate nor the prognosis of malignant melanoma. The use of incisional biopsies is not encouraged because tumor thickness cannot be measured accurately. However, they may be helpful for confirming the diagnosis if an excisional biopsy cannot be performed.
Aina Kunitomo,Kazunari Misawa,Yuichi Ito,Seiji Ito,Eiji Higaki,Seiji Natsume,Takashi Kinoshita,Tetsuya Abe,Koji Komori,Yasuhiro Shimizu 대한위암학회 2021 Journal of gastric cancer Vol.21 No.4
Purpose: Type 4 gastric cancer (GC) has a very poor prognosis even after curative resection, and the survival benefit of splenectomy for splenic hilar lymph node (LN; #10) dissection in type 4 GC remains equivocal. This study aimed to clarify the clinical significance of splenectomy for #10 dissection in patients with type 4 GC. Materials and Methods: The data of a total of 56 patients with type 4 GC who underwent total gastrectomy with splenectomy were retrospectively analyzed. Postoperative morbidity, state of LN metastasis, survival outcomes, and therapeutic value index (TVI) of each LN station were evaluated. TVI was calculated by multiplying the incidence of LN metastasis at each nodal station and the 5-year overall survival (OS) of patients who had metastasis to each node. Results: Overall, the postoperative morbidity rate was 28.6%, and the incidence of #10 metastasis in the patients was 28.6%. The 5-year OS rate for all patients was 29.9%, and most patients developed peritoneal recurrence. Moreover, the 5-year OS rates with and without #10 metastasis were 6.7% and 39.1% (median survival time, 20.4 vs. 46.0 months; P=0.006). The TVI of #10 was as low as 1.92. Conclusions: The clinical significance of splenectomy in the dissection of #10 for type 4 GC is limited and splenectomy for splenic hilar dissection alone should be omitted.
Effect of Biopsy Technique on the Survival Rate of Malignant Melanoma Patients
Yutaro Yamashita,Ichiro Hashimoto,Yoshiro Abe,Takuya Seike,Katsumasa Okawa,Yuichi Senzaki,Kazutoshi Murao,Yoshiaki Kubo,Hideki Nakanishi 대한성형외과학회 2014 Archives of Plastic Surgery Vol.41 No.2
Background: Cutaneous malignant melanoma has a poor prognosis. The detrimental effect of incisional biopsies on the outcome of malignant melanoma has been debated. The aim of this study was to determine the effect of the presence and type of biopsy on the prognosis of malignant melanoma. Methods: The medical records of 109 malignant melanoma patients treated at Tokushima University Hospital from 1983 to 2007 were reviewed. After excluding 28 cases with stage 0 disease or incomplete data, 81 cases were analyzed in detail with respect to patient sex, age, tumor site, clinical stage at diagnosis, presence of ulceration or lymph node metastasis, and prognosis. The five-year survival and five-year disease-free survival rates of patients who underwent incisional or excisional biopsies were compared with those who did not undergo a biopsy. Results: The male-to-female ratio was 1:1.19. The mean age was 61.3 years (range, 19–93 years). The most common site was a lower extremity, and the most common clinical stage was stage II. No significant differences in clinicopathological features, five-year survival rates, and five-year disease-free survival rates were observed among the three groups. Conclusions: The presence and type of biopsy neither affected the metastatic rate nor the prognosis of malignant melanoma. The use of incisional biopsies is not encouraged because tumor thickness cannot be measured accurately. However, they may be helpful for confirming the diagnosis if an excisional biopsy cannot be performed.
DT Neutronics Benchmark Experiment on Lead at JAEA-FNS
Kentaro Ochiai,Keitaro Kondo,Seiki Ohnishi,Kosuke Takakura,Satoshi Sato,Yuichi Abe,Chikara Konno,Chihiro Suzuki,Takahiro Yagi 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
Lead is one of the most important candidate materials for nuclear fusion reactor blankets. We have carried out an integral benchmark experiment on lead at the DT neutron source facility of JAEA, FNS. A cubic lead assembly on a side of 45.3 cm was set up and was irradiated with the DT neutron source. Reaction rates of the ^(27)Al(n,α)^(24)Na, ^(93)Nb(n,2n)^(92m)Nb, ^(90)Zr(n,2n)^(89)Zr, and ^(115)In(n,n')^(115m)In reactions and neutron spectra above 2 MeV were measured inside the assembly with activation foil and a small NE213 spectrometer, respectively. A Monte Carlo code, MCNP5, was adopted to calculate the reaction rates and neutron spectra. The latest nuclear data libraries, JENDL-3.3 ENDF/B-VII.0, JEFF-3.1 and FENDL-2.1, were used in the calculation. The calculation results with the three libraries except for JENDL-3.3 agreed with the measured reaction rates and neutron spectra. On the other hand, that with JENDL-3.3 underestimated the measured ones with the depth. We found out that the inappropriate evaluation of the (n,2n), elastic scattering and inelastic scattering reactions in the lead isotopes of JENDL-3.3 caused the disagreements.