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Prediction accuracy of incisal points in determining occlusal plane of digital complete dentures
Kenta Kashiwazaki,Yuriko Komagamine,Sahaprom Namano,Ji-Man Park,Maiko Iwaki,Shunsuke Minakuchi,Manabu Kanazawa 대한치과보철학회 2023 The Journal of Advanced Prosthodontics Vol.15 No.6
Purpose. This study aimed to predict the positional coordinates of incisor points from the scan data of conventional complete dentures and verify their accuracy. Materials and methods. The standard triangulated language (STL) data of the scanned 100 pairs of complete upper and lower dentures were imported into the computer-aided design software from which the position coordinates of the points corresponding to each landmark of the jaw were obtained. The x, y, and z coordinates of the incisor point (XP, YP, and ZP) were obtained from the maxillary and mandibular landmark coordinates using regression or calculation formulas, and the accuracy was verified to determine the deviation between the measured and predicted coordinate values. YP was obtained in two ways using the hamular-incisive-papilla plane (HIP) and facial measurements. Multiple regression analysis was used to predict ZP. The root mean squared error (RMSE) values were used to verify the accuracy of the XP and YP. The RMSE value was obtained after cross-validation using the remaining 30 cases of denture STL data to verify the accuracy of ZP. Results. The RMSE was 2.22 for predicting XP. When predicting YP, the RMSE of the method using the HIP plane and facial measurements was 3.18 and 0.73, respectively. Cross-validation revealed the RMSE to be 1.53. Conclusion. YP and ZP could be predicted from anatomical landmarks of the maxillary and mandibular edentulous jaw, suggesting that YP could be predicted with better accuracy with the addition of the position of the lower border of the upper lip.
Koide, Taro,Kashiwazaki, Gengo,Suzuki, Masaaki,Furukawa, Ko,Yoon, Min-Chul,Cho, Sung,Kim, Dongho,Osuka, Atsuhiro WILEY-VCH Verlag 2008 Angewandte Chemie. international edition Vol.47 No.50
<B>Graphic Abstract</B> <P>A stable radical: The title compound 1 has been synthesized as the first example of a meso-free variant and characterized as a strongly aromatic macrocycle with a spectacles-like planar conformation. The incorporation of free meso positions is promising for the exploration of novel structural and electronic properties. <img src='wiley_img/14337851-2008-47-50-ANIE200804570-content.gif' alt='wiley_img/14337851-2008-47-50-ANIE200804570-content'> </P>
Finite element analysis of RC beam-column joints with high-strength materials
Noguchi, H.,Kashiwazaki, T. Techno-Press 1997 Structural Engineering and Mechanics, An Int'l Jou Vol.5 No.5
Reinforced concrete (RC) interior beam-column joints with high-strength materials: concrete compressive strength of 100 MPa and the yield strength of longitudinal bars of 685 MPa, were analyzed using three-dimensional (3-D) nonlinear finite element method (FEM). Specimen OKJ3 of joint shear failure type was a plane interior joint, and Specimen 12 of beam flexural failure type was a 3-D interior joint with transverse beams. Though the analytical initial stiffness was higher than experimental one, the analytical results gave a good agreement with the test results on the maximum story shear forces, the failure mode.
Onodera, Toshihito,Sakai, Yasuzo,Kashiwazaki, Masaru,Ihara, Ikko,Lal, Saha Mihir The Korean Society of Superconductivity and Cryoge 2021 한국초전도저온공학회논문지 Vol.23 No.3
Milking parlor wastewater contains high concentration suspended solid (SS), nitrogen, and/or phosphate as well as organic compounds. A new biological wastewater process by magnetic separation, magnetic activated sludge (MAS) process, was applied to milking parlor wastewater treatment process. A three step wastewater treatment process of coagulation sedimentation / ammonia stripping (C/S), magnetic activated sludge process and contact oxidation (CO) was proposed for removal of these pollutants. First step, C/S process recovered 96% TN and 96% PO<sub>4</sub><sup>3-</sup>-P as resource for fertilizer from the wastewater. 81% biochemical oxygen demand (BOD) in wastewater was removed after MAS process. As a results, all pollutant concentrations satisfied Japanese effluent standards. Most of residual BOD and SS were removed by the CO process. It was estimated that the proposed process could reduce the process space to 1/7.
Comparison and Sequence Analysis of the 3 -terminal Regions of RNA 1 of Barley Yellow Mosaic Virus
Kui Jae Lee,Satoshi Kashiwazaki 한국자원식물학회 1998 Plant Resources Vol.1 No.2
An isolate of barley yellow mosaic virus(BaYMV-HN) obtained from Haenam, Korea was compared with two BaYMV strains, BaYMV- 1 -1 from Japan and BaYMV-G from Germany. The sequence of the 3 terminal 3817nucleotides(excluding the poly (A) tail] of RNA I of BaYMV-HN was determined to start within a long open reading frame coding for a part of the Nia-VPg polymerase(26 amino acids), Nla-Pro polymerase (343 amino acids), NIb polymerase(528 amino acids) and the entire capsid protein(297 amino acids), which is followed by a noncoding region(NCR) of 235 nucelotides. In the partial ORFs, BaYMV-HN shows higher sequence homology with BaYMV- I -1(99.5%) than BaYMV-G(92.7%). The 3 non-coding regions of BaYMV HN(235nt) shows higher nucleotide sequence homology with BaYMV-G(235nt) (99.6%) than BaYMV- I - 1(231nt) (97.0%). The 3 Nla-Pro protein sequence of BaYMV-HN shows higher amino acid sequence homology with BaYMV- I -1(95.0%) than BaYMV-G 93.6%), but, Nlb protein sequence of BaYMV-HN shows same all amino acid sequence. The capsid protein sequence of BaYMV-HN(297aa) shows same with BaYMV- I - 1, and shows higher nucleotide sequence homology with BaYMV-UK (from United Kingdom) (97,3%) than BaYMV-G(96.9%) and G2(96.9%). Difference of capsid protein amino acid were 0-9 between the Japan, United Kingdom and Germany and were 2-6 between all Korean isolates. Many of the amino acid differences are located in the N-terminal regions of the capsid proteins from 1 to 74 amino acid positions.
Toshihito Onodera,Yasuzo Sakai,Masaru Kashiwazaki,Ikko Ihara,Saha Mihir Lal 한국초전도저온공학회 2021 초전도와 저온공학 Vol.23 No.3
Milking parlor wastewater contains high concentration suspended solid (SS), nitrogen, and/or phosphate as well as organic compounds. A new biological wastewater process by magnetic separation, magnetic activated sludge (MAS) process, was applied to milking parlor wastewater treatment process. A three step wastewater treatment process of coagulation sedimentation / ammonia stripping (C/S), magnetic activated sludge process and contact oxidation (CO) was proposed for removal of these pollutants. First step, C/S process recovered 96% TN and 96% PO4 3--P as resource for fertilizer from the wastewater. 81% biochemical oxygen demand (BOD) in wastewater was removed after MAS process. As a results, all pollutant concentrations satisfied Japanese effluent standards. Most of residual BOD and SS were removed by the CO process. It was estimated that the proposed process could reduce the process space to 1/7.
Mayte Sánchez van Kammen,Jacoba P. Greving,Satoshi Kuroda,Daina Kashiwazaki,Akio Morita,Yoshiaki Shiokawa,Toshikazu Kimura,Christophe Cognard,Anne C. Januel,Antti Lindgren,Timo Koivisto,Juha E. Jääske 대한뇌졸중학회 2019 Journal of stroke Vol.21 No.3
Background and purpose Prediction of intracranial aneurysm growth risk can assist physicians in planning of follow-up imaging of conservatively managed unruptured intracranial aneurysms. We therefore aimed to externally validate the ELAPSS (Earlier subarachnoid hemorrhage, aneurysm Location, Age, Population, aneurysm Size and Shape) score for prediction of the risk of unruptured intracranial aneurysm growth. Methods From 11 international cohorts of patients ≥18 years with ≥1 unruptured intracranial aneurysm and ≥6 months of radiological follow-up, we collected data on the predictors of the ELAPSS score, and calculated 3- and 5-year absolute growth risks according to the score. Model performance was assessed in terms of calibration (predicted versus observed risk) and discrimination (c-statistic). Results We included 1,072 patients with a total of 1,452 aneurysms. During 4,268 aneurysm-years of follow-up, 199 (14%) aneurysms enlarged. Calibration was comparable to that of the followdevelopment cohort with the overall observed risks within the range of the expected risks. The c-statistic was 0.69 (95% confidence interval [CI], 0.64 to 0.73) at 3 years, compared to 0.72 (95% CI, 0.68 to 0.76) in the development cohort. At 5 years, the c-statistic was 0.68 (95% CI, 0.64 to 0.72), compared to 0.72 (95% CI, 0.68 to 0.75) in the development cohort. Conclusions The ELAPSS score showed accurate calibration for 3- and 5-year risks of aneurysm growth and modest discrimination in our external validation cohort. This indicates that the score is externally valid and could assist patients and physicians in predicting growth of unruptured intracranial aneurysms and plan follow-up imaging accordingly.