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Marumo Yoshiaki,Yoshida Takashi,Furukawa Yuki,Ina Kenji,Kamiya Ayumi,Kataoka Takae,Kayukawa Satoshi 대한백신학회 2023 Clinical and Experimental Vaccine Research Vol.12 No.4
Purpose: Patients with hematological malignancies are at an increased risk of severe infection with coronavirus disease 2019 (COVID-19). However, developing an adequate immune response after vaccination is difficult, especially in patients with lymphoid neoplasms. Since the long-term effects of the BNT162b2 vaccine are unclear, the humoral immune response 5 months after the two vaccinations in patients with hematological disorders was analyzed. Materials and Methods: Samples were collected from 96 patients vaccinated twice with BNT162b2 and treated with at least one line of an antitumor or immunosuppressive drug in our hospital from November 2021 to February 2022. Serum anti-severe acute respiratory syndrome coronavirus 2 (anti-SARS-CoV-2) spike (S) antibody titers were analyzed. Patients were age- and sex-matched using propensity matching and compared with a healthy control group. Patients with serum anti-SARS-CoV-2 S antibodies were defined as ‘responder’ if >50 U/mL. The patients had B-cell non-Hodgkin lymphoma (B-NHL), multiple myeloma, chronic myeloid leukemia, etc. Results: Patients had significantly low antibody levels (median, 55.3 U/mL vs. 809.8 U/mL; p<0.001) and a significantly low response rate (p<0.001). Multivariate analysis showed that patients with B-NHL, aged >72 years, were associated with a low response to vaccination. There were no significant differences between patients with chronic myeloid leukemia and healthy controls. Conclusion: Our study shows that patients with hematological disorders are at risk of developing severe COVID-19 infections because of low responsiveness to vaccination. Moreover, the rate of antibody positivity differed between the disease groups. Further studies are warranted to determine an appropriate preventive method for these patients, especially those with B-NHL.
A FULL CHARGE SEPARATION OVER THE TWO SAME CHROMOPHORES IN A PHOTOSYNTHETIC TETRAD
Osuka, Atsuhiro,Marumo, Shinji,Okada, Tadashi,Taniguchi, Seiji,Mataga, Noboru,Ohno, Takeshi,Nozaki, Koichi,Yamazaki, Iwao,Nishimura, Yoshinobu Korean Society of Photoscience 1997 Journal of Photosciences Vol.4 No.3
The synthesis and excited-state dynamics are described for a tetrad (ZC - ZP - ZP - I) consisting of zinc chlorin (ZC), zinc porphyrin (ZP), zinc porphyrin (ZP), and pyromellitimide (I), which upon photoexcitation provides a fully charge-separated state (ZC$^+$- P - ZP - l$^- $) with lifetimes of 230 $\mu$s in THF and > 50$ \mu$s in DMF at room temperature via a stepwise electron-transfer relay that has been detected by the ps-time resolved transient absorption spectroscopy.
Estimation of the Deep-Drawability of Aluminum Square Cups by Fracture Forces
Saiki, Hiroyuki,Marumo, Yasuo 대한금속재료학회(대한금속학회) 1998 METALS AND MATERIALS International Vol.4 No.3
Several fracture forces for the evaluation of the forming limit are investigated. The influence of flange lubrication, blank shapes, blank materials and tool shapes on the fracture forces is examined. The increase in the critical fracture force (the ability to sustain deep-drawing forces) is required for the improvement in the deep-drawability of square cups. Constant fracture force and transitional fracture force are used as target values for the increase in the critical fracture force. Both the fracture forces are independent of the blank shapes, and influenced by the flange lubrication, the blank materials and the tool shapes. The deep-drawability of square cups is evaluated by means of the fracture forces.
Slide-bending Formation of Thin Metal Sheet by Using Force Control
Hikaru Nishimura,Hiroshi Harada,Yasuo Marumo,Teruo Yamaguchi 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
This paper describes slide-bending formation of thin metal sheet by using an industrial robot. The formation of parts made of very thin sheets has become increasingly important following the miniaturization of industrial products, including electrical and mechanical devices. A new process called a slide-bending formation was proposed. The authors have made an automatic slide-bending formation system which consists of an industrial robot, z-axis stage, a force sensor and a CCD camera. The bending formation of metal sheet made by stainless steel was investigated system atically. From the results of the experiment, it is shown that the trajectory of the z-stage was controlled so that the reactive force is kept constant. The bending angle of the thin metal sheet can be controlled by the applied load.
Akira Shinohara,Yutaka Ueno,Keishi Marumo 대한척추외과학회 2014 Asian Spine Journal Vol.8 No.4
Pyogenic spondylitis is a frequently observed disease in orthopedics, and the number of cases is increasing. Some patients with pyogenic spondylitis suffer from vertebral destruction due to infection. The disease is typically treated with antibiotics, bed rest, spinal support, and lesion curettage; however, vigorous drug therapy against vertebral body destruction by pyogenic spondylitis has not been attempted. In this report, a case of pyogenic spondylitis with spinal destruction caused by infection and treated with once-weekly teriparatide administration is presented. Vertebral body erosion in cortical and cancellous areas by the infection was rapidly repaired after 6 weeks of once-weekly teriparatide treatment. Treatment with once-weekly teriparatide appears to be a new strategy for patients with severe osteoporosis suffering from pyogenic spondylitis.
Slide-bending Formation of Metallic Sheet Using Neural Network
Masaki Hanazono,Hikaru Nishimura,Hiroshi Harada,Yasuo Marumo,Teruo Yamaguchi 제어로봇시스템학회 2010 제어로봇시스템학회 국제학술대회 논문집 Vol.2010 No.10
This paper describes slide-bending formation of metallic sheet by using a neural network. The formation of parts made of very thin metallic sheets has become increasingly important miniaturizing industrial products, including electrical and mechanical devices. One of the authors proposed a new method called a slide-bending formation method for the bending of the metallic sheet. In this method, the shape of a metallic sheet after forming can be decided depending on various parameters. However, it is difficult to select optimal parameters. In order to solve this problem, we propose to use a neural network to determine parameters. From the results of the experiment, it is shown that both the bending angle and the curvature radius of the metallic foil can be controlled by the proposed method.