http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
( Mikiya Araki ),( Kotaro Oki ),( Takashi Onishi ),( Seiichi Shiga ) 한국액체미립화학회 2013 한국액체미립화학회 학술강연회 논문집 Vol.2013 No.-
Feasibility of a newly developed non-intrusive particle size measurement method in sub-micron region using multi-wavelength polarized lights is investigated, experimentally. Figure 1 shows the optical setup. Polystyrene particles are used as the test particles, which are suspended in purified water. The arithmetic mean diameters of them are varied from 0.356 to 3.00 μm, which are previously measured with a conventional method (centrifugal sedimentation method). The laser beam passes through the test particles, and the scattered lights are acquired with a digital CCD camera set in parallel and perpendicular directions to the polarization plane of the incident light. Based on the Mie`s scattering theory, the ratio of scattered lights for these two components is given as a function of the particle diameter, the refractive index, and the wavelength of the incident light. By comparing the polarization ratio calculated analytically with those obtained experimentally, the particle size can be determined, which is called polarization ratio method. The major drawback of this method is the narrow measurement range, typically up to the order of 0.1 μm, which is attributed to the complicated behavior of the polarization ratio in the Mie scattering region. In order to extend the measurement range of conventional polarization ratio methods, three kinds of He-Ne lasers, whose wavelengths are 543.5, 594.1, and 632.8 nm, are used. The polarization ratios of the scattered lights are obtained from these scattered light images, and the acquired data are compared with the analytical values. Figure 2 shows the data comparison with a conventional method. It is shown that, by use of the multiwavelength polarization ratio method, the measurement range of the particle size can be extended up to the order of 3 μm, and that the accuracy of the results lies from 0.1 % to 7.6 %, when compared with the results of a centrifugal sedimentation method.
Tetsuro Tominaga,Takashi Nonaka,Akiko Fukuda,Toshio Shiraisi,Shintaro Hashimoto,Masato Araki,Yorihisa Sumida,Terumitsu Sawai,Takeshi Nagayasu 대한외과학회 2021 Annals of Surgical Treatment and Research(ASRT) Vol.101 No.2
Purpose: Pelvic exenteration (PE) is a highly invasive procedure with high morbidity and mortality rates. Promising options to reduce this invasiveness have included laparoscopic and transperineal approaches. The aim of this study was to identify the safety of combined transabdominal and transperineal endoscopic PE for colorectal malignancies. Methods: Fourteen patients who underwent combined transabdominal and transperineal PE (T group: 2-team approach, n = 7; O group: 1-team approach, n = 7) for colorectal malignancies between April 2016 and March 2020 in our institutions were included in this study. Clinicopathological features and perioperative outcomes were compared between groups. Results: All patients successfully underwent R0 resection. Operation time tended to be shorter in the T group (463 minutes) than in the O group (636 minutes, P = 0.080). Time to specimen removal was significantly shorter (258 minutes vs. 423 minutes, P = 0.006), blood loss was lower (343 mL vs. 867 mL, P = 0.042), and volume of blood transfusion was less (0 mL vs. 560 mL, P = 0.063) in the T group, respectively. Postoperative complications were similar between groups. Conclusion: Combined transabdominal and transperineal PE under a synchronous 2-team approach was feasible and safe, with the potential to reduce operation time, blood loss, and surgeon stress.
Mori, Kohsuke,Araki, Takashi,Takasaki, Tomoya,Shironita, Sayoko,Yamashita, Hiromi Korean Society of Photoscience 2009 Photochemical & photobiological sciences Vol.8 No.5
Supported Pd catalysts were synthesized using various semiconductor materials by a photo-assisted deposition method under UV-light irradiation. The Pd precursor was deposited and partially reduced by the direct interaction with the photo-excited state of the semiconductor materials, and subsequently transformed into metal particles by $H_2$ reduction. CO adsorption and Pd K-edge XAFS measurements demonstrated that the mean diameter of the deposited Pd particles can be controlled by the type of employed semiconductor materials. The catalytic activities in the direct synthesis of hydrogen peroxide ($H_2O_2$) using $H_2$ and $O_2$ gases under atmospheric pressure were strongly dependent on the type of supports. Here, the use of $TiO_2$ comprising a mixed phase of anatase and rutile was the most efficient based on the amount of Pd. The photo-assisted deposition also provides a simple and straightforward method to synthesize PdAu alloy nanoparticles. For the structural model of PdAu nanoparticles, we suggest that most of the Au atoms are preferentially located in the core region, whereas the Pd atoms are preferentially located in the shell region. The PdAu/$TiO_2$ catalysts prepared by the photo-assisted deposition method were shown to perform significantly better than the pure Pd/$TiO_2$ catalysts.
Masanori Arata,Norio Takahashi,Masafumi Fujita,Motoyasu Mochizuki,Takashi Araki,Takashi Hanai 전력전자학회 2012 JOURNAL OF POWER ELECTRONICS Vol.12 No.1
According to electrical output up rating of a permanent magnet motor and request to operate for a large variable speed range, resonance between structural natural vibration and electromagnetic force inside the motor can take place and make noise. This paper describes the mechanism of a resonance between them and noise lowering procedure by frequency shift when they are applied to the reluctance torque largely employed new motor named Permanent magnet Reluctance Motor (PRM).
Katsuhiro Hayashi,Tetsutaro Yahata,Ryota Muramoto,Norio Yamamoto,Akihiko Takeuchi,Shinji Miwa,Takashi Higuchi,Kensaku Abe,Yuta Taniguchi,Hisaki Aiba,Yoshihiro Araki,Hiroyuki Tsuchiya 대한재활의학회 2018 Annals of Rehabilitation Medicine Vol.42 No.3
Objective To analyze patient characteristics of cancer rehabilitation and outcomes at our hospital.Methods This retrospective study analyzed 580 patients, who underwent cancer rehabilitation at our hospital and rehabilitation outcome after therapy were investigated. The relationship between the initial Barthel index and discharge outcomes was investigated, with a special focus on cancer patients with bone metastasis. The Barthel index and performance status (Eastern Cooperative Oncology Group) before and after rehabilitation were analyzed, and threshold value of home discharge was calculated from a receiver operating characteristic curve (ROC). General criteria for home discharge from our hospital included independence in performing basic activities of daily living such as bathing, feeding, and toileting or availability of home support from a family member/caregiver.Results The outcomes after rehabilitation among all the patients were as follows: discharge home 59%, death 13%, and others 27%. Statistical differences were observed between the initial and final values of the Barthel index in patients with bone metastasis, who could be discharged home (p=0.012). ROC analysis of the initial Barthel index for predicting home discharge revealed a threshold value of 60, sensitivity of 0.76, and specificity of 0.72.Conclusion The patients with bone metastasis had a lower rate of home discharge and a higher rate of mortality than all the study patients who underwent cancer rehabilitation at our hospital. It is proposed that at the time of initiation of rehabilitation for patients with bone metastasis, an initial Barthel index lower than 60 might predict a worse outcome than home discharge.