检索结果-南通市图书馆

Plant Diversity 2021年第3期43卷 216-224页

作者： harue abe hiroki Miura Yoshitaka Motonaga Center for Sustainable Agriculture and Forestry Faculty of AgricultureNiigata University94-2 KodaSadoNiigata952-2206Japan Aomori Prefectural Asamushi Aquarium 1-25 BabayamaAsamushiAomoriAomori039-3501Japan Faculty of Agriculture Niigata University8050 Ikarashi-ninochoNishi-kuNiigata950-2181Japan

In Japan,Camellia japonica and Camellia rusticana are naturally *** differences in their habitats and morphologies,they have been classified by various researchers as either varieties,subspecies,or *** taxonomic position of *** and *** remain unclear because morphological comparisons have been restricted to limited areas and quantitative data are *** grows in snowy places,unlike *** *** displays ornithophily,*** displays *** species have adapted to different growing environments and pollinators,which have altered the morphology of flowers and *** therefore quantitatively estimated the differentiation between these two taxa by comparing the morphologies of leaf hypodermis,flower form,petal color,and filament color in twenty *** findings allowed us to differentiate these two species by the presence or absence of a leaf *** also discovered an intermediate type of leaf hypodermis,which might also be caused by *** component analysis(PCA)indicated that the flower morphologies between these species were significantly *** petal and filament colors were also significantly *** quantitative analysis suggests that speciation caused by differences in both pollinators and environment is one of the factors involved in this *** findings in *** and *** help to explain speciation processes for other species as well.

关键词： Camellia japonica Camellia rusticana Ecological isolation Pollinator shift Pollination syndrome Reproductive isolation

Water Management for Improvement of Rice Yield,Appearance Quality and Palatability with high Temperature During Ripening Period

在线全文

学校读者我要写书评

暂无评论

Rice science 2021年第4期28卷 409-416,I0038页

作者： Yuji Matsue Katsuya Takasaki Jun abe Global Innovation Center Kyushu UniversityMinami-kuFukuoka 815-8540Japan AGL Co LtdAsoKumamoto 869-2225Japan Faculty of Agriculture Tokai UniversityHigashi-kuKumamoto 862-8652Japan

To clarify the optimal water management in large-scale fields under high temperatures at the ripening period,effective water managements during this period for improvement of yield,appearance quality and palatability were *** with intermittent irrigation and flooded irrigation,the soil temperature with saturated irrigation remained low throughout the day,and the decrease rate of the bleeding rate of hills was the *** results suggested that the saturated irrigation maintained root *** the three irrigation types,the number of spikelets per m2 and 1000-grain weight were similar,however,saturated irrigation resulted in significantly higher rice yield due to improvement in the percentage of ripened *** saturated irrigation produced a high percentage of perfect rice grains and thicker brown rice grain,furthermore,the palatability of cooked rice was excellent because protein content and hardness/adhesion ratio were both ***,under high-temperature ripening conditions,soil temperature was lowered and root activity was maintained when applying saturated irrigation after heading *** results indicated that saturated irrigation is an effective countermeasure against high-temperature ripening damage.

关键词： appearance quality root activity high-temperature ripening damage palatability saturated irrigation soil temperature water management rice yield intermittent irrigation flooded irrigation

EFFECT OF SOLUTION EXTRUSION RATE ON MORPhOLOGY AND PERFORMANCE OF POLYVINYLIDENE FLUORIDE hOLLOW FIBER MEMBRANES USING POLYVINYL PYRROLIDONE AS AN ADDITIVE

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2010年第4期28卷 527-535页

作者：陈文清 Makoto Onishi Naoki abe Department of Environment Science and Engineering College of Architecture and EnvironmentSichuan University SCU-hITAChI Environment Applied Technology Research Center Sichuan University hitachi Plant Technologies LtdTokyo 170-8466Japan

Polyvinylidene fluoride （PVDF） hollow fiber membranes prepared from spinning solutions with different polyvinyl pyrrolidone （PVP） contents （1% and 5%） at different extrusion rates were obtained by wet/dry phase process keeping all other spinning parameters constant. In spinning these PVDF hollow fibers, dimethylacetamide （DMAc） and PVP were used as a solvent and an additive, respectively. Water was used as the inner coagulant. Dimethylformamide （DMF） and water （30/70） were used as the external coagulant. The performances of membranes were characterized in terms of water flux, solute rejection for the wet membranes. The structure and morphology of PVDF hollow fiber were examined by BET adsorption, dry/wet weight method and scanning electron microscopy （SEM）. It is found that the increase in PVP content and extrusion rate of spinning solution can result in the increase of water flux and decrease of solute rejection. The improvements of interconnected porous structure and pore size are induced by shear-thinning behavior of spinning solution at high extrusion rates, which could result in the increase of water flux of hollow fiber membranes. The increase of extrusion rate also leads to the increase of membrane thickness due to the recovery effect of elastic property of polymer chains.

关键词： Polyvinylidene fluoride Polyvinyl pyrrolidone hollow fiber Extrusion rate

Efficient Origin-Destination Estimation Using Microscopic Traffic Simulation with Restricted Rerouting

在线全文

学校读者我要写书评

暂无评论

Computer Modeling in Engineering & Sciences 2023年第5期135卷 1091-1109页

作者： Kazuki abe hideki Fujii Shinobu Yoshimura Vector Research Institute Inc.Shibuya-kuTokyo150-0002Japan School of Engineering The University of TokyoBunkyo-kuTokyo113-8656Japan

Traffic simulators are utilized to solve a variety of traffic-related *** such simulators,origin-destination(OD)traffic volumes as mobility demands are required to input,and we need to estimate *** authors regard an OD estimation as a bi-level programming problem,and apply a microscopic traffic simulation model to ***,the simulation trials can be computationally expensive if full dynamic rerouting is allowed,when employing multi-agent-based models in the estimation *** paper proposes an efficient OD estimation method using a multi-agent-based simulator with restricted dynamic rerouting to reduce the computational *** though,in the case of large traffic demand,the restriction on dynamic rerouting can result in heavier *** authors resolve this problem by introducing constraints of the bi-level programming problem depending on link *** results show that the accuracy of the link traffic volume reproduced with the proposed method is virtually identical to that of existing methods but that the proposed method is more computationally efficient in a wide-range or high-demand context.

关键词： ODestimation microscopic traffic simulation dynamic rerouting bi-level programming multi-agent basedmodel

Secretory carcinoma——impact of translocation and gene fusions on salivary gland tumor

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Cancer Research 2017年第5期29卷 379-384页

作者： Ryoko Inaki Masanobu abe Liang Zong Takahiro abe Aya Shinozaki-Ushiku Tetsuo Ushiku Kazuto hoshi Department of Oral & Maxillofacial Surgery University of Tokyo Hospital Division for health Service Promotion University of Tokyo Graduate School of Medicine University of Tokyo Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing) Department of Gastrointestinal Surgery Peking University Cancer Hospital & Institute Department of Pathology Graduate School of Medicine University of Tokyo

Secretory carcinoma（SC）, previously described as mammary analogue secretory carcinoma（MASC）, is a recently described salivary gland tumor which morphologically resembles mammary secretory carcinoma. The first description of SC/MASC, reported by Skálová et al. in 2010, was as a rare salivary carcinoma imitating secretory carcinoma of the breast. SC/MASC is a unique salivary gland tumor with morphological overlap with acinic cell carcinoma（Aci CC）, mucoepidermoid carcinoma（MEC）, and adenocarcinoma not otherwise specified（ADCNOS）. SC/MASC shares similar clinicopathological features with Aci CC. As a critical difference between SC/MASC and Aci CC, SC/MASC characteristically has the chromosomal translocation t（12;15）（p13;q25） which leads to a fusion gene between the ETV6 gene on chromosome 12 and the NTRK3 gene on chromosome 15. This genetic background is an important differential diagnostic finding for excluding other salivary gland tumors and may be a critical factor determining the prognosis for patients with SC/MASC. Research in recent years has provided a large body of new data on SC/MASC and suggests the possibility that the ETV6-NTRK3 translocation could be a therapeutic target. here, we review the morphological and clinicopathological features of SC/MASC and discuss new directions for therapy.

关键词： Secretory carcinoma mammary analogue secretory carcinoma MASC ETV6-NTRK3 fusion gene salivary gland tumor

Effects of reduction on the catalytic performance of limonite ore

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2018年第5期27卷 1489-1495页

作者： Keisuke abe Ade Kurniawan Takahiro Nomura Tomohiro Akiyama Graduate school of Engineering Hokkaido University Sapporo 060-8628 Japan Center for Advanced Research of Energy and Materials Hokkaido University Sapporo 060-8628 Japan

The catalytic performance of Ni-containing limonite ore in the dry reforming reaction of methane （Ch_4＋CO_2→2h_2＋2CO） was determined before and after hydrogen reduction, and under a flow of hydrogen. After hydrogen reduction, the limonite ore exhibited higher catalytic performance, because of the formation of Fe-Ni. however, the Fe in Fe-Ni was readily oxidized by the input CO_2 gas. resulting in a rapid decrease in the catalytic performance of limonite ore. The performance de- crease was due to a decrease in the Ni surface area; Ni could not dissolve in iron oxides and this caused segregation in the iron oxides. When the reaction was conducted under a hydrogen flow, the Fe-Ni was formed and maintained. Ni was highly dispersed in the Fe-Ni phase, resulting in greater surface area of Ni and higher conversion rate of Ch_4 and CO_2. The catalytic performance of the limonite ore was inferior to the Ni/Al_2O_3 catalyst because the effect of catalyst support was small, however, the limonite ore was more stable during catalytic use and much cheaper than the Ni/Al_2O_3.

关键词： Limonite Dry reforming Fe-Ni Catalyst

Microbial soluble aromatic prenyltransferases for engineered biosynthesis

在线全文

学校读者我要写书评

暂无评论

Synthetic and Systems Biotechnology 2021年第2期6卷 51-62页

作者： he-Ping Chen Ikuro abe Graduate School of Pharmaceutical Sciences The University of TokyoBunkyo-kuTokyo113-0033Japan School of Pharmaceutical Sciences South-Central University for NationalitiesWuhanHubei430074PR China Collaborative Research Institute for Innovative Microbiology The University of TokyoYayoi 1-1-1Bunkyo-kuTokyo113-8657Japan

Prenyltransferase(PTase)enzymes play crucial roles in natural product biosynthesis by transferring isoprene unit(s)to target substrates,thereby generating prenylated *** prenylation step leads to a diverse group of natural products with improved membrane affinity and enhanced bioactivity,as compared to the nonprenylated *** last two decades have witnessed increasing studies on the identification,characterization,enzyme engineering,and synthetic biology of microbial PTase family *** herein summarize several examples of microbial soluble aromatic PTases for chemoenzymatic syntheses of unnatural novel prenylated compounds.

关键词： Microbial prenyltransferase Biosynthesis Enzyme engineering Prenylation Synthetic biology

IMPROVEMENT OF TYPE IV CRACKING RESISTANCE OF 9Cr hEAT RESISTING STEEL WELDMENT BY BORON ADDITION

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2004年第4期17卷 331-337页

作者： M.Tabuchi M.Kondo T.Watanabe h.hongo F.Yin F.abe National Institute for Materials Science Tsukuba Ibaraki 305-0047 JapanNational Institute for Materials Science Tsukuba Ibaraki 305-0047 JapanNational Institute for Materials Science Tsukuba Ibaraki 305-0047 JapanNational Institute for Materials Science Tsukuba Ibaraki 305-0047 JapanNational Institute for Materials Science Tsukuba Ibaraki 305-0047 JapanNational Institute for Materials Science Tsukuba Ibaraki 305-0047 Japan

Creep lives of high Cr ferritic heat resisting steel weldments decrease due to Type Ⅳ fracture, which occurs as a result of formation and growth of creep voids and cracks on grain boundaries in fine-grained heat affected zone (hAZ). Because boron is considered to suppress the coarsening of grain boundary precipitates and growth of creep voids, we have investigated the effect of boron addition on the creep properties of 9Cr steel weldments. Four kinds of 9Cr3WSCoVNb steels with boron content varying from 4.7×10-5 to 1.8×10-4 and with nitrogen as low as 2.0×10-5 were prepared. The steel plates were welded by gas tungsten arc welding and crept at 923K. It was found that the microstructures of hAZ were quite different from those of conventional high Cr steels such as P91 and P92, namely the fine-grained hAZ did not exist in the present steel weldments. Boron addition also has the effect to suppress coarsening of grain boundary carbides in hAZ during creep. As a result of these phenomena, the welded joints of present steels showed no Type Ⅳ fractures and much better creep lives than those of conventional steels.

关键词： high Cr heat resistant steel welded joint boron addition Type IV fracture

Determination of Ring-OSF Position in Czochralski Silicon Single Crystals by Numerical Analysis of Distribution of Grown-in Defects

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2006年第z1期24卷 213-216页

作者： Sunao abe Takahiro Terada Yasutada Nakagawa Kazuhiko Kashima Silicon Company Toshiba Ceramics Co.Ltd. 6-861-5 Higashikou Seirou-machi Niigata 957-0197 Japan Corporate Manufacturing Engineering Center Toshiba Corp. 33 Shin-isogo Isogo-ku Yokohama Kanagawa 235-0017 Japan Corporate Manufacturing Engineering Center Toshiba Corp. 33 Shin-isogo Isogo-ku Yokohama Kanagawa 235-0017 Japan New Business Creation Division Toshiba Ceramics Co.Ltd. 1-6-3 Osaki Shinagawa-ku Tokyo 141-0032 Japan

A numerical analysis technique that incorporates Voronkov's model were examined and used to estimate the distribution of defects during crystal growth. By comparisons of the distribution of the density of LSTD and the position of R-OSF in non-nitrogen-doped (non-N-doped) and nitrogen-doped (N-doped) silicon crystals, it is found that the results of the numerical analyses agree with practically evaluated data. The observations suggest that the R-OSF nucleus is a VO2 complex that is formed by bonds between oxygen atoms and residual vacancies consumed during the formation of void defects. This suggests that Voronkov's model can be used to accurately predict the generation and growth of defects in silicon crystals. This numerical analysis technique was also found to be an effective method of estimating the distribution of defects in silicon crystals during crystal growth.

关键词： computer simulation nucleation point defects volume defect semiconducting silicon

Free vibration and transient response of double curved beams connected by intermediate straight beams

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(English Edition) 2025年第1期46卷 37-62页

作者： R.A.JAFARI-TALOOKOLAEI h.GhANDVAR E.JUMAEV S.KhATIR T.CUONG-LE School of Mechanical Engineering Babol Noshirvani University of Technology Department of Mechanical Engineering Faculty of Engineering New Uzbekistan University University of Business and Science Center for Engineering Application and Technology Solutions Ho Chi Minh City Open University

This paper investigates the free vibration and transient response of interconnected structures including double curved beams and intermediate straight beams,which are all constructed from functionally graded porous(FGP) materials. The strain potential and kinetic energies of each beam along with the work done by the external force are calculated. Additionally, a higher-order beam element is introduced to derive stiffness and mass matrices, along with the force vector. The curved and straight beams are discretized, and their assembled stiffness, mass matrices, and force vectors, are *** conditions at the joints are used to derive the total matrices of the entire structure. Subsequently, the natural frequencies and transient response of the system are determined. The accuracy of the mathematical model and the self-developed computer program is validated through the comparison of the obtained results with those of the existing literature and commercial software ANSYS, demonstrating excellent ***, a comprehensive study is conducted to investigate the effects of various parameters on the free vibration and transient response of the considered structure.

关键词：