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- 저자 : Yuki Ikeda (검색결과 7 건)
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Fuka Ikeda,Yuki Okamoto,Kei Nishikawa,Hiroaki Yamada,Masayuki Okamoto,Toshihiko Tanaka 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5
This paper proposes a sinusoidal chargingdischarging method of the lithium-ion batteries (LiBs) to reduce the capacitances of the dc-capacitors in the previously proposed smart charger (SC) for electric vehicles (EVs) in single-phase three-wire distribution feeders with power quality compensator. The dc-capacitor current in the three-leg pulse-width-modulated (PWM) rectifier is detected, and then added to the reference value for the output current of the bidirectional dc-dc converter that is used to charge or discharge the LiBs. The addition of the detected dc-capacitor current to the reference value of the bidirectional dc-dc converter achieves the sinusoidal chargingand discharging-operations of the LiBs in EVs. The sinusoidal charging- and discharging-operations sink the voltage ripples in the dc-capacitors of both the PWM rectifier and bidirectional dc-dc converter in the SC. This achieves the substantial reduced dc-capacitors in the SC. The simulation results demonstrate that balanced and sinusoidal source currents with a unity power factor can be achieved reducing the capacitances of dc-capacitors in the SC.
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Otsuki Shuhei,Ikeda Kuniaki,Wakama Hitoshi,Okuno Nobuhiro,Okamoto Yoshinori,Okayoshi Tomohiro,Miyamoto Yuki,Neo Masashi 대한슬관절학회 2020 대한슬관절학회지 Vol.32 No.-
The purpose of the study was to determine the effect of cartilage degeneration at the patellofemoral joint on clinical outcomes after open wedge high tibial osteotomy and to investigate the predisposing factors for progressive patellofemoral cartilage degeneration.Seventy-two knees were evaluated on second-look arthroscopy in patients who opted for plate and screw removal at an average of 20.1 months after osteotomy. Cartilage degeneration at the patellofemoral joint was evaluated using the International Cartilage Repair Society grading system, with cases divided into progression and nonprogression groups. Radiographic parameters of the patellofemoral anatomy, knee range of motion, and clinical outcomes were evaluated from the preoperative baseline to the final follow up, on average 50 months after osteotomy. A contracture > 5° was considered a flexion contracture. Cartilage degeneration progressed in 31 knees, and preoperative knee flexion contracture was significantly associated with progressive degeneration ( P < 0.01). The Lysholm and Kujala scores were significantly lower in the progression group (87.9 and 85.3, respectively) than in the nonprogression group (91.6 and 93.6, respectively) ( P < 0.05). The odds ratio of the flexion contracture resulting in progression of patellofemoral cartilage degeneration was 4.63 (95% confidence interval, 1.77–12.1). No association was detected between progressive degeneration and age, sex, body mass index, Kellgren-Lawrence grade, or radiographic parameters. Flexion contracture may be associated with progression of cartilage degeneration at the patellofemoral joint and may negatively affect the clinical outcomes after open wedge, high tibial osteotomy.
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Minimally invasive recipient procedure in kidney transplantation
Yoshifumi Miura,Yuki Nakafusa,Naoko Yokota-Ikeda,Mitsue Ota,Naoki Otomo 대한이식학회 2023 Korean Journal of Transplantation Vol.37 No.3
Background: There are several procedural variations for kidney transplant donors, including open, laparoscopic, hand-assisted, and robotic methods, with either an intra- abdominal or retroperitoneal approach. Conversely, fewer options are available for the recipient procedure. We introduce a method that involves a small incision, with the goal of being less invasive for recipients. Methods: Our current method was introduced in April 2022. As of July 2023, we have completed 27 cases. We analyzed several factors in these 27 cases, including the size of the incision, rewarming time, anastomosis time, graft function, analgesic use, and complications. Results: The average incision size was 73 mm. The time taken for anastomosis was 24. 1 minutes, while the rewarming time averaged 43.1 minutes. There were no instances of primary nonfunction. One case necessitated postoperative dialysis three times due to heart failure. Following stent removal, one patient developed grade 1 hydronephrosis. There was one instance of bleeding from the drain insertion site. Another case involved a clamp injury to the external iliac artery, which necessitated stent insertion on the fourth postoperative day. Compared to procedures performed using conventional methods, the use of analgesics was less in these cases. Conclusions: Our minimally invasive technique, which involves a small incision, is a feasible alternative that could potentially be less invasive than traditional methods.
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Ryota Hosomi,Hayato Maeda,Yuki Ikeda,Yuko Toda,Munehiro Yoshida,Kenji Fukunaga 한국식품영양과학회 2017 Preventive Nutrition and Food Science Vol.22 No.2
Fish muscles are classified into white and red muscles, and the chemical composition of the two fish muscles have many differences. Few reports have assessed the health-promoting functions of white fish muscle proteins (WFP) and red fish muscle proteins (RFP). We therefore evaluated the mechanisms underlying the alteration of lipid profiles and cholesterol metabolism following the intake of WFP prepared from cod and RFP prepared from light muscles of tuna. Male Wistar rats were divided into six dietary groups: casein (23%), WFP (23%), and RFP (23%), with or without 0.5% cholesterol and 0.1% sodium cholate. Compared to the WFP-containing diet, the RFP-containing diet supplemented with cholesterol and sodium cholate significantly increased serum and liver cholesterol contents. However, in the RFP groups, an alteration in cholesterol metabolism including an increased tendency to excrete fecal sterols and hepatic cholesterol 7α-hydroxylase was related to the reduction of hepatic cholesterol contents. This phenomenon might be related to the tendency of an increased food intake in RFP-containing diets. These results highlight the differential effects of WFP and RFP on serum and liver lipid profiles of Wistar rats fed non-cholesterol- or cholesterol-containing diets under no fasting condition.
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Hosomi, Ryota,Maeda, Hayato,Ikeda, Yuki,Toda, Yuko,Yoshida, Munehiro,Fukunaga, Kenji The Korean Society of Food Science and Nutrition 2017 Preventive Nutrition and Food Science Vol.22 No.2
Fish muscles are classified into white and red muscles, and the chemical composition of the two fish muscles have many differences. Few reports have assessed the health-promoting functions of white fish muscle proteins (WFP) and red fish muscle proteins (RFP). We therefore evaluated the mechanisms underlying the alteration of lipid profiles and cholesterol metabolism following the intake of WFP prepared from cod and RFP prepared from light muscles of tuna. Male Wistar rats were divided into six dietary groups: casein (23%), WFP (23%), and RFP (23%), with or without 0.5% cholesterol and 0.1% sodium cholate. Compared to the WFP-containing diet, the RFP-containing diet supplemented with cholesterol and sodium cholate significantly increased serum and liver cholesterol contents. However, in the RFP groups, an alteration in cholesterol metabolism including an increased tendency to excrete fecal sterols and hepatic cholesterol $7{\alpha}$-hydroxylase was related to the reduction of hepatic cholesterol contents. This phenomenon might be related to the tendency of an increased food intake in RFP-containing diets. These results highlight the differential effects of WFP and RFP on serum and liver lipid profiles of Wistar rats fed non-cholesterol- or cholesterol-containing diets under no fasting condition.
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김종훈,Toshio Hasegawa,Kurisu Tada,Yuki Uehara,Yukiko Fukui,Ayako Nakamura,Satomi Takei,Satoshi Mitarai,Akio Aono,Shigaku Ikeda 대한피부과학회 2023 Annals of Dermatology Vol.35 No.-
A 38-year-old female with systemic lupus erythematosus (SLE) initiated belimumab treat- ment. One month later, she presented with a reddish painful swelling on her right lower leg. She was treated with ceftriaxone and vancomycin. However, novel erythematous papules and indurated nodules appeared on both her lower legs. Skin biopsy revealed microabscess formation with mixed cell granuloma surrounded by inf lammatory cell infiltration within the dermis with subcutaneous fat tissue. A large number of acid-fast bacilli were observed with Ziehl–Neelsen staining. DNA sequencing of both the hsp65 and the 16S rRNA se- quences showed a 100% match with the corresponding region of Mycobacterium hae- mophilum . Mycobacterial culture revealed satellite growth enhancement on Middlebrook 7H11 agar plates around a paper strip containing hemin. She was treated with levof loxacin, rifabutin, and ethambutol. Within 13 months, her cutaneous lesions improved markedly without any side effects. The B cell-targeted biologic belimumab, a fully humanized IgG1γ monoclonal antibody that inactivates B lymphocyte stimulator, has been considered to be beneficial for active SLE. However, this therapy could increase the risk for the development of biologic therapy-associated mycobacterial infections, both tuberculosis and nontubercu- lous mycobacteria infections.
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