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Placenta Previa Accreta and Previous Cesarean Section：Some Clarifications

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Chinese Medical Journal 2018年第12期131卷 1504-1505页

作者： Shigeki Matsubara Hironori takahashi Department of Obstetrics and Gynecology Jichi Medical University Tochigi Japan

To the Editor： Placenta accreta （accreta, increta, or percreta） is challenging： effort to reduce its incidence is of paramount importance. We already know well that cesarean section （CS） increases the risk ofacc... 详细信息

关键词： DELIVERY

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日本长期护理保险的现状评估与未来展望

国际老年医学杂志 2024年第3期45卷 257-260页

作者：高桥泰王丽香国际保健福祉大学东京107-8402

日本社会进入老龄化比中国早约30年,对照了1980-2035年期间日本65~74岁和75岁及以上人口的变化以及日本和中国老龄化率推移变化,作者对日本养老设施供需平衡的演变进行了研究,主要对2018年日本各地区每1 000人中75岁及以上人口拥有的养... 详细信息

日本社会进入老龄化比中国早约30年,对照了1980-2035年期间日本65~74岁和75岁及以上人口的变化以及日本和中国老龄化率推移变化,作者对日本养老设施供需平衡的演变进行了研究,主要对2018年日本各地区每1 000人中75岁及以上人口拥有的养老设施床位数水平进行了研究;同时,根据各年龄段的地区人口结构和各年龄段使用养老设施的比例,研究了从2014-2018年养老设施床位的供应数量。研究发现预计到2025年后需要长期护理的80岁及以上的老年人口将迅速增加,如果继续保持过去的养老设施需求增加趋势,日本社会将需要继续建设养老设施。在中国,此类养老设施供需预测对于养老设施的发展至关重要。鉴于老年人的健康水平和价值观会随着时间的推移而发生变化,在定期修正预测模型的同时,继续建立更高精度的模型非常重要。日本30年前的情况以及此后的变化对中国建立长期护理需求预测模型具有重要的参考价值。

关键词：老龄化社会养老设施供求关系长期护理保险

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CREB-binding proteins (CBP) as a transcriptional coactivator of GATA-2

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Science China(Life Sciences) 2008年第3期51卷 191-198页

作者： TOMOMI takahashi TORU Nakano Department of Pathology Medical School and Graduate School of Frontier Biosciences Osaka University Yamada-oka 2-2 Suita Osaka 565-0871 Japan

The GATA family consists of six members, GATA 1-6. In this study, we focused on GATA-2, which is expressed predominantly in hematopoietic progenitor cells and plays the key role in keeping these cells in the undifferentiated status. CREB-binding proteins (CBP) are essential transcriptional coacti- vators for a large number of regulated DNA-binding transcription factors, including GATA-1. But there have been no reports on whether CBP is still a co-activator of GATA-2. Here, we used the immunopre- cipitation and pull-down experiments to show that the GATA-2 and CBP were physically binding to- gether, and clarified the binding sites CH1, CH3 , CH452 and CT1430 in CBP and N-finger, C-finger and N-C-finger in GATA-2. Luciferase assay results in our experiment indicated that CBP could increase GATA-2 transcriptional activity in the dose-dependent manner. GATA-1 is mainly expressed in differen- tiated hematopoietic cells, but still has overlap expression with GATA-2. CBP is a coactivator of GATA-2 and GATA-1. The investigation on the mechanism that could decide whether CBP binds to GATA-2 to keep hematopoietic cells in the progenitor status or to GATA-1 to start differentiation will be a very in- teresting and very meaningful project in the near future.

关键词： CBP TATA-2 coactivator hematopoietic cells

Effects of leaf age,elevation and light conditions on photosynthesis and leaf traits in saplings of two evergreen conifers,Abies veitchii and ***

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Journal of Plant Ecology 2020年第4期13卷 460-469页

作者： Rina Suzuki Koichi takahashi Department of Science Graduate School of Science and TechnologyShinshu UniversityAsahi 3-1-1Matsumoto 390-8621Japan Department of Biology Faculty of ScienceShinshu UniversityMatsumoto 390-8621Japan Department of Mountain Ecosystem Institute for Mountain ScienceShinshu UniversityAsahi 3-1-1Matsumoto 390-8621Japan

Aims Subalpine coniferous species are distributed over a wide range of elevations in which they must contend with stressful conditions,such as high elevations and extended periods of *** evergreen coniferous species,Abies veitchii and Abies mariesii,dominate at low and high elevations,respectively,in the subalpine zone,central *** aim of this study is to examine the effects of leaf age,elevation and light conditions on photosynthetic rates through changes in morphological and physiological leaf traits in the two *** We here examined effects of leaf age,elevation and light conditions on photosynthesis,and leaf traits in *** and *** of the two conifers were sampled in the understory and canopy gaps at their lower(1600 m)and upper(2300 m)distribution *** Findings The two species showed similar responses to leaf age and different responses to elevation and light conditions in photosynthesis and leaf *** maximum photosynthetic rate of *** is correlated negatively with leaf mass per area(LMA)and non-structural carbohydrate(NSC)*** increased at high elevations in the two species,whereas NSC concentrations increased only in ***,the maximum photosynthetic rate of *** decreased at high ***,maximum photosynthetic rates correlate positively with nitrogen concentration in both *** the understory,leaf nitrogen concentrations decreased and increased in *** and ***,*** decreased and the chlorophyll-to-nitrogen ratio increased in understory conditions only for ***,suggesting it has a higher light-capture efficiency in dark conditions than does *** study concluded that *** has more shade-tolerant photosynthetic and leaf traits and its photosynthetic rate is less affected by elevation compared with ***,allowing *** to survive in the understory and to dominate at high elevations.

关键词： leaf chlorophyll leaf mass per area leaf nitrogen non-structural carbohydrate concentration stable carbon–isotope ratio

Tunable deconfined quantum criticality and interplay of different valence-bond solid phases

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Chinese Physics B 2020年第5期29卷 52-65页

作者： Bowen Zhao Jun takahashi Anders W.Sandvik Department of Physics Boston University590 Commonwealth AvenueBostonMassachusetts 02215USA Beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of SciencesBeijing 100190China

We use quantum Monte Carlo simulations to study an S = 1/2 spin model with competing multi-spin interactions. We find a quantum phase transition between a columnar valence-bond solid(cVBS) and a Néel antiferromagnet(AFM), as in the scenario of deconfined quantum-critical points, as well as a transition between the AFM and a staggered valence-bond solid(sVBS). By continuously varying a parameter, the sVBS–AFM and AFM–cVBS boundaries merge into a direct sVBS–cVBS transition. Unlike previous models with putative deconfined AFM–cVBS transitions, e.g., the standard J–Q model,in our extended J–Q model with competing cVBS and sVBS inducing terms the transition can be tuned from continuous to first-order. We find the expected emergent U(1) symmetry of the microscopically Z4 symmetric cVBS order parameter when the transition is continuous. In contrast, when the transition changes to first-order, the clock-like Z4 fluctuations are absent and there is no emergent higher symmetry. We argue that the confined spinons in the sVBS phase are *** also present results for an SU(3) symmetric model with a similar phase diagram. The new family of models can serve as a useful tool for further investigating open questions related to deconfined quantum criticality and its associated emergent symmetries.

关键词： quantum phase transitions deconfined quantum criticality quantum spin systems quantum Monte Carlo simulations

On improving strigolactone mimics for induction of suicidal germination of the root parasitic plant Striga hermonthica

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aBIOTECH 2021年第1期2卷 1-13页

作者： Ikuo takahashi Kosuke Fukui Tadao Asami Graduate School of Agricultural and Life Sciences The University of TokyoTokyo 113-8657Japan

Strigolactones(SLs)are plant hormones that regulate the branching of plants and seed germination stimulants of root parasitic *** root parasites are a great threat to agricultural production,the use of SL agonists could be anticipated to provide an efficient method for regulating root parasites as suicidal germination inducers.A series of phenoxyfuranone-type SL mimics,termed debranones,has been reported to show potent bioactivities,including reduction of the tiller number on rice,and stimulation of seed germination in the root parasite Striga *** exert both activities,two substituents on the phenyl ring of the molecules were important but at least a substituent at the 2-position must be an electron-withdrawing ***,little is known about the effect of the properties of the substituents at the 2-position on ***,we found that different substituents at the 2-position give different preferences for *** debranones were more effective than the others and SL agonist GR24 for inhibiting rice tiller but far less effective in the induction of *** ***,nitrile and methyl derivatives clearly stimulated the germination of *** *** their IC_(50) values were 100 times higher than that of GR24 in the receptor competitive binding assay,their physiological activities were approximately 1/10 of *** differences could be due to their uptake in plants and/or their physicochemical stability under our experimental *** findings could support the design of more potent and selective SL agonists that could contribute to solving big agricultural issues.

关键词： Agonist Rice Root parasitic weed Seed germination Strigolactone Tillering

Application of Simple Adaptive Control to Water Hydraulic Servo Cylinder System

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Chinese Journal of Mechanical Engineering 2012年第5期25卷 882-888页

作者： ITO Kazuhisa YAMADA Tsuyoshi IKEO Shigeru takahashi Koji College of Systems Engineering and Science Shibaura Institute of Technology Saitama 3378570 Japan Graduate School of Mechanical Engineering Tottori UniversityTottori 6808552 Japan Department of Mechanical Engineering Sophia UniversityTokyo 1028554 Japan

Although conventional model reference adaptive control （MRAC） achieves good tracking performance for cylinder control, the controller structure is much more complicated and has less robustness to disturbance in real applications. This paper discusses the use of simple adaptive control （SAC） for positioning a water hydraulic servo cylinder system. Compared with MRAC, SAC has a simpler and lower order structure, i.e., higher feasibility. The control performance of SAC is examined and evaluated on a water hydraulic servo cylinder system. With the recent increased concerns over global environmental problems, the water hydraulic technique using pure tap water as a pressure medium has become a new drive source comparable to electric, oil hydraulic, and pneumatic drive systems. This technique is also preferred because of its high power density, high safety against fire hazards in production plants, and easy availability. However, the main problems for precise control in a water hydraulic system are steady state errors and overshoot due to its large friction torque and considerable leakage flow. MRAC has been already applied to compensate for these effects, and better control performances have been obtained. However, there have been no reports on the application of SAC for water hydraulics. To make clear the merits of SAC, the tracking control performance and robustness are discussed based on experimental results. SAC is confirmed to give better tracking performance compared with PI control, and a control precision comparable to MRAC （within 10 μm of the reference position） and higher robustness to parameter change, despite the simple controller. The research results ensure a wider application of simple adaptive control in real mechanical systems.

关键词： water hydraulics servo cylinder system positioning control simple adaptive control

Permeability differences based on three-dimensional geometrical information of void spaces

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Journal of Rock Mechanics and Geotechnical Engineering 2021年第2期13卷 368-376页

作者： Dae-Sung Cheon Manabu takahashi Taehyun Kim Geology Division Korea Institute of Geoscience and Mineral ResourcesDaejeonSouth Korea Hydrology Research Group National Institute of Advanced Industrial Science and TechnologyTsukubaJapan Radwaste Disposal Research Division Korea Atomic Energy Research InstituteDaejeonSouth Korea

In this study,the permeabilities of Berea and Otway sandstones were measured under different confining pressures,and porosity was investigated through mercury intrusion porosimetry(MIP).The total porosities of the Berea and Otway sandstones were approximately 17.4%and 25%,*** size distributions of each sandstone were almost the same,but the pores in the Otway sandstone were slightly ***,the permeability of the Otway sandstone was smaller than that of the Berea sandstone by one order of ***-dimensional(3D)void geometry and geometrical properties of the void spaces relevant to flow were compared to obtain the relation between the permeability differences and porosities of the two *** 3D geometrical analysis using microfocus X-ray computed tomography(CT)was performed,and the pore geometries of both sandstones were compared using the 3D medial axis(3DMA)*** and throat radii,pore coordination number,tortuosity,number of connecting paths,connecting path volume,and other factors were determined using *** Otway sandstone was characterized by a small effective throat/pore radius *** on the fluid flow mechanism,the lower effective throat/pore radius ratio results in a lower permeability induced by the fluid energy loss,which means that the 3D geometrical shape of void spaces affects the permeability value.

关键词： X-ray computed tomography(CT) Porosity Permeability Geometrical information Three-dimensional medial axis(3DMA)

An analysis method of topological relations between Snort rules

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Journal of Southeast University(English Edition) 2016年第1期32卷 21-28页

作者：殷奕汪芸 takahashi Naohisa 东南大学计算机科学与工程学院南京211189 南京师范大学计算机科学与技术学院南京210023 Department of Computer Science and Engineering Graduate School of Engineering Nagoya Institute of Technology

It is difficult to knowall the relations between Snort rules. To deal with this problem, the topological relations between Snort rules are classified based on the set theory, and a method for calculating the topological relations between Snort rules is proposed. In the existing methods for analyzing the relations of Snort rules, the relations are usually determined only according to the header information of the Snort rules. Without considering the actions of Snort rules, the proposed method improves upon the existing methods and it can classify and calculate the topological relations between Snort rules according to both headers and options information of Snort rules. In addition, the proposed method is implemented by the functional language Haskell. The experimental results showthat the topological relations between Snort rules can be calculated rapidly and effectively. The proposed method also provides an important basis for conflict detection in the succeeding Snort rules.

关键词： intrusion detection system(IDS) Snort rule functional programming language