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High-speed playback of spatiotemporal division multiplexing holographic 3D video stored in a solid-state drive using a digital micromirror device

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Chinese Optics Letters 2021年第9期19卷 121-126页

作者： Kohei Suzuki Minori Tao Yuki Maeda Hirotaka Nakayama Ren Noguchi Minoru Oikawa Yuichiro Mori Takashi Kakue Tomoyoshi Shimobaba Tomoyoshi Ito Naoki takada Graduate School of Integrated Arts and Sciences Kochi UniversityKochi 780-8520Japan Faculty of Science Kochi UniversityKochi 780-8520Japan National Astronomical Observatory of Japan Tokyo 181-8588Japan Research and Education Faculty Kochi UniversityKochi 780-8520Japan Graduate School of Engineering Chiba UniversityChiba 263-8522Japan

We propose a high-speed playback method for the spatiotemporal division multiplexing electroholographic three-dimensional(3D)video stored in a solid-state drive(SSD)using a digital micromirror *** spatiotemporal division multiplexing electroholography prevents deterioration in the reconstructed 3D video from a 3D object comprising many object *** the proposed method,the stored data is remarkably reduced using the packing technique,and the computer-generated holograms are played back at high ***,we successfully reconstructed a clear 3D video of a 3D object comprising approximately 1,100,000 points at 60 frames per second by reducing the reading time of the stored data from an SSD.

关键词： spatiotemporal division multiplexing electroholography digital micromirror device computer-generated hologram high-speed playback

Color representation method using RGB color binary-weighted computer-generated holograms

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Chinese Optics Letters 2018年第8期16卷 25-29页

作者： Masato Fujiwara Naoki takada Hiromitsu Araki Shohei Ikawaa Yuki Maeda Hiroaki Niwase Minoru Oikawa Takashi Kakue Tomoyoshi Shimobaba Tomoyoshi Ito Graduate School of h~teg＇rated Arts and Sciences Kochi University Kochi 780-8520 Japan 2Science Department Natural Sciences Cluster Research and Education Faculty Kochi University Kochi 780-8520 Japa Faculty of Science Kochi University Kochi 780-8520 .lapan IGraduate School of Engineering Chiba University Chiba 263-8522 Japan

We propose a method for color electroholography using a simple red-green-blue （RGB） gradation representa- tion method without controlling the respective brightness of tile reference RGB-colored lights. The proposed method uses RGB multiple bit planes comprising RGB binary-weighted computer-generated holograms with various light transmittanees. The object points of a given three-dimensional （3D） object are assigned to RGB nmltiple bit planes according to their RGB gradation levels. The RGB multiple bit planes are sequentially displayed in a tim-division-multiplexe- manner. Consequently, the proposed method yields a color gradation representation of a reconstructed 3D object.

关键词： RGB Color representation method using RGB color binary-weighted computer-generated holograms CGH

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PT1249藏文音写四分律抄断片

敦煌研究 2023年第5期 34-39页

作者：高田时雄京都大学人文科学研究所日本京都606-8501

法藏PT1249号残片,是用藏文音写的汉文文献,其内容难以解读,以往并无人涉及。笔者通过对该残片的研究认为:其内容是式叉摩那受大戒时所使用的问答的一部分,除了起首的导言外,作白的语句均是抄录自《四分律·比丘尼揵度》。目前为止,从... 详细信息

法藏PT1249号残片,是用藏文音写的汉文文献,其内容难以解读,以往并无人涉及。笔者通过对该残片的研究认为:其内容是式叉摩那受大戒时所使用的问答的一部分,除了起首的导言外,作白的语句均是抄录自《四分律·比丘尼揵度》。目前为止,从未发现有使用藏文音写的汉文律藏文献。而与该文献完全一致的汉字文本,似也未能留存下来。不过,受戒时此类对白是必须的,因此必定为僧尼所记诵。从其对音的特点来看,该写本时代约在吐蕃统治时期。本文提出藏汉文的对照文本,不见于《四分律》的部分语句由笔者按照对音补缺。据此文献可知,在吐蕃时期的敦煌,不识汉字的式叉摩那也能够受大戒,成为正式的尼师。而这一残片除了丰富我们对敦煌佛教的实际情况的认识之外,也加深了我们对敦煌语言文字的理解。

关键词：吐蕃时期敦煌藏文音写汉文文献《四分律》受戒

Safety and efficacy of carbon dioxide insufflation during gastric endoscopic submucosal dissection

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World Journal of Gastroenterology 2015年第26期21卷 8195-8202页

作者： Jun takada Hiroshi Araki Fumito Onogi Takayuki Nakanishi Masaya Kubota Takashi Ibuka Masahito Shimizu Hisataka Moriwaki Department of Gastroenterology Gifu University Graduate School of Medicine

AIM: To compare the safety and efficacy of carbon dioxide(CO2) and air insufflation during gastric endoscopic submucosal dissection(ESD).METHODS: This study involved 116 patients who underwent gastric ESD between January and December *** eliminating 29 patients who fit the exclusion criteria,87 patients,without known pulmonary dysfunction,were randomized into the CO2 insufflation(n = 36) or air insufflation(n = 51) *** ESD was performed with a CO2 regulation unit(constant rate of 1.4 L/min) used for patients undergoing CO2 *** received diazepam for conscious sedation and pentazocine for *** CO2 tension(Ptc CO2) was recorded 15 min before,during,and after ESD with *** CO2,the correlation between Ptc CO2 and procedure time,and ESD-related complications were compared between the two *** blood gases were analyzed after ESD in the first 30 patients(12 with CO2 and 18 with air insufflation) to assess the correlation between arterial blood CO2 partial pressure(Pa CO2) and Ptc ***: There were no differences in respiratoryfunctions,median sedative doses,or median procedure times between the ***,there was no significant difference in post-ESD blood gas parameters,including Pa CO2,between the CO2 and air groups(44.6 mm Hg vs 45 mm Hg).Both groups demonstrated median p H values of 7.36,and none of the patients exhibited *** significant differences were observed between the CO2 and air groups with respect to baseline Ptc CO2(39 mm Hg vs 40 mm Hg),peak Ptc CO2 during ESD(52 mm Hg vs 51 mm Hg),or median Ptc CO2 after ESD(50 mm Hg vs 50 mm Hg).There was a strong correlation between Pa CO2 and Ptc CO2(r = 0.66; P < 0.001).The incidence of Mallory-Weiss tears was significantly lower with CO2 insufflation than with air insufflation(0% vs 15.6%,P = 0.013).CO2 insufflation did not cause any adverse events,such as CO2 narcosis or gas ***: CO2 insufflation durin

关键词： Carbon dioxide Gastric endoscopic submucosaldissection Insufflation Mallory-Weiss tear Randomizedcontrolled trial

风湿性关节炎与Epstein-Barr病毒关系的研究

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中华实验和临床病毒学杂志 1996年第1期10卷 56-61页

作者：纪志武 Kenzo takada 李宝民谈浪逐曾毅中国预防医学科学院病毒学研究所北京100052 日本国山口大学医学部寄生虫学和病毒学教研室

采用抗体检测和聚合酶链反应(PCR)技术,对风湿性关节炎病人血清内抗 Epstein-Barr(EB)病毒核抗原(EBNA),壳抗原(VCA)和早期抗原(EA)的 IgG 抗体,及周围血粒细胞、口腔和病变关节腔积液中脱落细胞内 EB 病毒 BamH Ⅰ K 片段存在情况进行... 详细信息

采用抗体检测和聚合酶链反应(PCR)技术,对风湿性关节炎病人血清内抗 Epstein-Barr(EB)病毒核抗原(EBNA),壳抗原(VCA)和早期抗原(EA)的 IgG 抗体,及周围血粒细胞、口腔和病变关节腔积液中脱落细胞内 EB 病毒 BamH Ⅰ K 片段存在情况进行了较系统、全面的研究。实验中发现,病人血清内抗 EB 病毒抗体滴度显著高于正常人。两组人血清中抗 EB 病毒抗体的几何平均滴度之比分别是:EBNA3.1:1,VCA4.0:1,EA4.8:1。在病人和正常人血粒细胞和口腔脱落上皮细胞中分别检出了 EB 病毒 BamH Ⅰ K 240bp 的 DNA 片段。在风湿性关节炎和骨关节炎病人关节滑膜腔积液脱落细胞中也扩增出 EB 病毒的基因片段。对经药物治疗后病人血清内抗 EB 病毒不同成分抗体滴度的变化进行了动态观察,证明药物治疗3个月后,病人血清内抗 EBNA-1抗体滴度下降明显,而IgG/VCA 和 IgG/EA 等抗体的滴度几乎无变化。还对系统性红癍狼疮和系统性硬化症病人血清内抗EB 病毒 IgG 抗体滴度进行了测定。

关键词：风显性关节炎 Epstein-Barr 病毒聚合酶链反应

Comparison of Various Foods Intakes and Their Relationships with Body Mass Index in Japanese Old Men and Women

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Food and Nutrition Sciences 2021年第6期12卷 591-601页

作者： A. takada F. Shimizu Y. Ishii M. Ogawa T. Takao International Projects on Food and Health (NPO) Tokyo Japan Faculty of Human Life and Environmental Sciences Showa Women’s University Tokyo Japan

Objective: Obesity is an important health problem, leading to many metabolic diseases such as type2 diabetes mellitus, cardiovascular diseases, cancer etc. There are many diet proposals to combat obesity. Since obesity is relatively rare in Japan, we wanted to know what kinds of foods influence body mass index (BMI) in old Japanese people. Methods: Healthy participants were given self-administered diet history questionnaires and described answers on each item by recollection of diets they took (7 days dietary recall). We used a brief-type self-administered diet history questionnaire (BDHQ) by using which the Japanese Ministry of Health, Labour and Welfare reports national Nutrition Surveys. From these questionnaires, we calculated the intakes of energy, carbohydrate, fat, protein or other foods. Results: Men take more alcohol, salt fruit, beans, and eggs than women. Intakes of majo

关键词： Carbohydrate Protein Fish Glucose Insulin BMI (Body Mass Index) Obesity

Use of fractal geometry to propose a new mechanism of airway-parenchymal interdependence

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Open Journal of Molecular and Integrative Physiology 2012年第1期2卷 14-20页

作者： Kyongyob Min Keita Hosoi Yoshinori Kinoshita Satoshi Hara Hiroyuki Degami Tetsuo takada Takahiko Nakamura Respiratory Division Department of Internal Medicine Itami City Hospital Hyogo Japan

The topic of airway-parenchymal interdependence (API) is of great importance to those interested in identifying factors that influence airway patency. A carefully designed experiment has raised questions about the classical concept of API. This paper proposes a new mechanism of API. The pulmonary lobe is an aggregated body consisting of many Miller’s lobular polyhedrons and a fractal bronchial tree. The fractal cartilaginous bronchial tree was assumed to be characterized by both Horton’s ratio (Lj+1/Lj=2λ, where Lj+1, and Lj denote the mean lengths of branches at Horsfield’ order of j + 1 and j) and power laws between diameters and lengths of branches. Fluid dynamic parameters of fractal trees were assumed to be interrelated among powers and λ. A non-cartilaginous lobular bronchiole is adjoined to the edge of a lobular polyhedron, and is encircled by an inextensible basement membrane to reflect a reversible relationship of rlLl = constant(c), where rl and Ll denote the diameter and the length of a lobular bronchiole, respectively. API at the level of the lobu-lar bronchiole was described by log(rl) = -(1+λ)/(1+5λ)log(hl/c), where rl and hl denote the diameter of the lobular bronchiole and the parenchymal parameter relating the size of the lobular polyhedron, respectively. If the distribution in sizes of the lobular polyhedrons was described by a Weibull’s probability density function characterized by the shape parameter m as well as the fractal parameter λ = 0.5, the diameter R of a cartilaginous bronchial branch was determined by log(R) = F - 3/7log(h/c), where F(m) denotes a function of m, and h denotes the mean size of the polyhedrons in the lobe. As a conclusion, API can be described by a combination of both lobular API and corresponding adaptive changes in the degree of contraction of airway smooth muscles.

关键词： Self-Similarity of Bronchial Branching Power Laws Fractal Geometry Airways-Parenchymal Interdependence

Determinants of airway hyperresponsiveness—Balance of tonic and phasic contractility of airway smooth muscles of lobular bronchioles

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Open Journal of Molecular and Integrative Physiology 2012年第1期2卷 8-13页

Airway hyperresponsiveness (AHR) is a characteristic feature of asthma, and generally correlates with severity of asthma. Understanding the protection mechanism against excessive airway narrowing and how it breaks down is fundamental to solving the problem of asthma. In this paper we have proposed a stochastic modeling the airway smooth muscle bundle for reproducing AHR such as an increased sensitivity of the airways to an inhaled constrictor agonist, a steeper slope of the dose-response curve, and a greater maximal response to agonist. A large number N of contractile muscle cells was assumed to repeat themselves in between contraction and relaxation asynchronously. Dynamic equilibrium of statistic physics was applied to the system of ASM bundle. Thus, the relation of dose to response of a piece of ASM bundle was described by Φ=tanh(βH) , where β was Boltzman factor and H represented energy of contraction induced by constrictor agents. Each of adjacent pair contractile cells was assumed to have Ising-type of antimagnetic interactions of preference energy J (for the condition of contraction-relaxation) between them. A motion equation for a piece of ASM bundle was described by Φ=N(H-zJΦ , which explained existence of combined tonic and phasic contractions. Based on observations of Venegas et al. [4], airway responsiveness was assumed to be assessable by total volume of the ventilation defects (TVD) of 13NN PET-CT images. Interactions via propagation of Ca ion waves between ASM bundles would cause percolation probability by PΦ=(1+tanh(βH))2/4 along the tree, then the relation of dose βH to TVD was described by TVD=PΦ[1-(1-PΦ)3/PΦ3]-TVD0. TVD0 represented the protection mechanism against excessive airway narrowing, which was determined by the ratio of amplitudes between tonic and phasic contractions, thus the balance of amplitudes between tonic and phasic contractions of peripheral lobular smooth muscles would be the determinant of AHR.

关键词： Airway Hyperresponsiveness Stochastic Model of Airway Smooth Muscle Ising-Type of Antimagetic Interactions Percolation Process Phasic and Tonic Contractions

Use of a mathematical model of autopoietic maintenance of pulmonary alveolar integrity to show a possible relationship between epithelial-mesenchymal transition and the genesis of emphysema and fibrosis

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Open Journal of Molecular and Integrative Physiology 2011年第2期1卷 23-28页

作者： Kyongyob Min Keita Hosoi Yoshinori Kinoshita Satoshi Hara Hiroyuki Degami Tetsuo takada Takahiko Nakamura 不详

Rationale: There is accumulating evidence that a group of stem/progenitor cells (SPCs) maintain alveolar epithelial integrity. Pulmonary emphysema is characterized by the histological finding of the loss of alveolar epithelial integrity along with corresponding bronchiolar fibrosis. Objectives: Based on the concept of autopoiesis (the capacity to produce oneself), we proposed a mathematical model in the maintenance of alveolar epithelial integrity as related to the genesis of pulmonary emphysema and fibrosis. Methods: A tessellation automaton model was used to describe the autopoietic dynamics of the bronchiolo-alveolar epithelial surface. The alveolar septal volume en-closed by the epithelial surface is a distributed system of discrete elements, which move by random walk in the manner of Brownian motion. Assuming that the numbers of components and events in the automaton are large, an approximate theoretical treatment in terms of differential equations is possible, allowing a set of partial differential equations to be produced. Results: 1) Assuming the loss of progenitor cells through the epithelial-mesenchymal transition (EMT), a sharp bifurcation between two qualitatively distinct regions of the phase space (one that is repaired completely, and another that has disappeared entirely) clearly appeared. 2) Thus, from the system of discrete and spatial partial differential equations, we obtained a system of ordinary differential equations in equilibrium conditions that defined a close relationship between the degree of emphysema, the density of alveolar septal fibroblasts, and the mean concentration of SPCs. Conclusions: A mathematical model of the autopoietic maintenance of the alveolar epithelial surface suggested a close relationship between alveolar emphysema and fibrosis and EMT in lungs affected by chronic obstructive pulmonary disease.

关键词： Autopoiesis Pulmonary Emphysema Pulmonary Fibrosis Pulmonary Stem/Progenitor Cells