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280篇 您的检索式:作者名="MasA"
    题名 作者 年代 出处 被引量
1Koutecky-Levich analysis applied to nanoparticle modified rotating disk electrodes: Electrocatalysis or misinterpretation?显示文摘Justus Masa Christopher Batchelor-McAuley Wolfgang Schuhmann Richard G. Compton 2014Nano Research2014,7,1:7
2Analysis of Grassland Vegetation of the Southwest Heilongjiang Steppe (China) Using the Power Law显示文摘In 1997, we conducted a vegetation survey in three semi-arid natural grasslands (steppes) withdifferent livestock grazing intensities in Southwest Heilongjiang Province, China. The dominant grasslandspecies was the grass Stipa baicalensis Roshev. Grasslands with light, intermediate, and heavy grazingintensities were located 10, 5, and 2 km from a village, respectively. Villagers use the steppe to raise cattle,horses, sheep, and goats. Each of the three grasslands was surveyed by placing 100 quadrats (50 cm×50 cm)along a 50 m line transect. Each quadrat was divided into four equal areas (25 cm×25 cm; S-quadrats) and allplant species occurring in each of these smaller areas were identified and recorded. These data were summa-rized into frequency distributions and the percentage of S-quadrats containing a given species and thevariance of each species were estimated. The power law was applied to these estimates. The power law wasused to evaluate the spatial heterogeneity and frequency of occurrence for each species in the grasslandcommunity. The lightly grazed grassland exhibited high spatial heterogeneity (caused by large plant size),the highest species diversity, and a high occurrence of S. baicalensis. In contrast, the heavily grazedgrassland exhibited high spatial heterogeneity (caused by patchy populations of small plant size), lowspecies diversity, and a low occurrence of S. baicalensis. We judged that the heavily grazed grassland wasovergrazed and exclusion of livestock from the degraded areas is necessary for recovery.Mikinori TSUIKI Yu-Sheng WANG Yiruhan Michio TSUTSUMI Masae SHIYOMI 2005Journal of Integrative Plant Biology2005,47,8:6
3Spatial Heterogeneity and Variability of a Large-Scale Vegetation Community Using a Power-Law Model显示文摘Spatial heterogeneity and stability are fundamental indices for describing vegetation communities. The spatial distribution characteristics of the vegetation in Nenjiang region of northeastern China were evaluated using a variance power-law model. The data fits the model well with estimates given for the levels of heterogeneity for not only single species but also the community as a whole. The linear regression indicates that the species in the community exhibit a consistently organized spatial pattern, as is often discovered in field surveys but rarely seen in artificial systems. The species deviations from the regression line, which exhibit a leptokurtic distribution, may reflect the variability of the community. Thus, the model provides a general tool for management and regulation of ecosystems, especially where there is human disturbances.宋志远 黄大明 SHIYOMI Masae 王昱生 TAKAHASHI Shigeo YOSHIMICHI Hori YAMAMURU Yasuo 陈俊 2005Tsinghua Science and Technology2005,10,4:5
4提高金属有机骨架材料在二氧化碳热催化转化中的性能:策略及前景展望显示文摘近年来,大气中CO_(2)的浓度不断增加,带来全球变暖等一系列严重后果,成为国际社会共同关注的环境问题.将CO_(2)催化转化为高附加值化学品可有效降低其向大气中的排放,同时可实现其资源化利用,符合低碳社会的发展目标.目前,已有多种催化体系实现了CO_(2)向不同化学品的转化.然而,由于CO_(2)自身的热力学稳定性和动力学惰性,这些转化通常需要在苛刻的反应条件和较高能耗下进行.设计开发高效催化体系、实现温和条件下CO_(2)的转化利用引起了工业界和学术界的广泛兴趣.金属有机骨架材料(MOFs)是一类由有机配体和金属中心通过配位键组装而成的有机-无机杂化材料,在很多方面展现出良好的应用性能.由于其结构的多样性、可设计性、高比表面积和多孔性等独特性质,MOFs在催化领域吸引了很多研究者的关注.其中,MOFs作为非均相催化剂在CO_(2)热催化转化中表现出良好的应用前景,已实现多种CO_(2)向高值化学品的转化路径.但这些催化体系也存在一些缺点,如有些MOFs材料在催化反应中稳定性差以及其微孔性对反应中的传质造成限制等.因此,设计稳定的MOFs和MOF-基材料并对其结构进行优化改性,从而在温和条件下实现高效的CO_(2)转化具有重要意义.本文综述了提高MOFs在CO_(2)热催化转化反应中性能的几种策略:(1)对MOFs结构中的配体进行设计,包括具有活性官能团的配体、活性配合物作为配体和引入混合配体设计多元MOF;(2)调节MOFs结构中的金属中心,设计混合金属中心和包含活性金属团簇的金属中心;(3)构筑多级孔MOFs;(4)设计MOF-基的复合材料,包括MOFs作为载体与金属纳米颗粒、活性配合物和聚合物构建复合材料;(5)利用MOFs作为前驱体制备MOF-基衍生物材料,重点阐述了如何增加MOFs作为非均相催化剂的催化活性位点以及在CO_(2)转化反应中各位点之间的协同作用.此外,介绍了原位表征技术在MOF-基材料用于CO_(2)固定和转化中的应用.最后,分析了MOF-基非均相催化材料在CO_(2)热催化转化领域目前面临的问题和挑战,包括MOFs材料结构优化、催化机理研究和规模化制备等方面,并对未来的发展趋势进行了展望.郝磊端 夏启能 张强 Justus Masa 孙振宇 2021Chinese Journal of Catalysis2021,42,11:4
5Prognostic Significance of Intraperitoneal Cancer Cells in Gastric Carcinoma: Analysis of Real Time Reverse Transcriptase-Polymerase Chain Reaction after 5 Years of Followup显示文摘Yasuhiro Kodera Hayao Nakanishi Seiji Ito Yoshinari Mochizuki Norifumi Ohashi Yoshitaka Yamamura Michitaka Fujiwara Masahiko Koike Masae Tatematsu Akimasa Nakao 2006Journal of the American College of Surgeons2006,,:3
6针刺脊髓骶段对皮层兴奋性和膀胱功能的影响(英文)显示文摘目的:探讨针刺对大脑皮层兴奋性和膀胱功能的影响及其之间的相互关系,探讨脑干背外侧被盖区(LDT)胆碱能神经元在其中的作用。方法:将SD大鼠109只,乌拉坦麻醉,采用立体定位法,在额骨和顶骨上植入皮层电极进行脑电图(EEG)记录,通过玻璃微电极记录单个神经细胞的放电活动。用导管插入膀胱并用微量注射泵向内注入生理盐水,使膀胱收缩并记录其活动。以直径为0.35mm毫针手针刺激大鼠脊髓骶部第2、3节段旁开0.5cm处1min,深度3~4mm。结果:在膀胱充盈的情况下,当EEG表现为低幅度高频率的快波时,给予脊髓骶段手针刺激,膀胱活动受到抑制,与此同时EEG转变为高幅度低频率慢波的比例为6/27(22.2%),抑制效应开始于针刺后45s至12min。在膀胱空虚的情况下,针刺引起EEG转变为高幅度低频率慢波的比例为71/82(86.6%)。针刺引起LDT内的胆碱能神经元放电频率由(2.9±1.5)Hz下降到(1.2±0.6)Hz(n=12,P<0.05,t-test),神经元放电活动的下降提前于EEG高幅度低频率的慢波的出现。结论:针刺脊髓骶段能降低大鼠大脑皮层的兴奋状态,并抑制膀胱活动,这种变化与针刺抑制了LDT胆碱能神经元的活动密切相关。王慧 Yoshi masa Koyama Yukihiko Kayama 2009World Journal of Acupuncture-Moxibustion2009,19,1:3
7Binaural integration abilities in bilateral cochlear implant user显示文摘Bilateral Cochlear implants(CIs) improved speech intelligibility, speech perception in background noise, and sound localization in quiet and noisy situations. However, it is unclear whether these advantages essentially result in binaural integration of acoustic stimuli from each ear. In this study, we investigated the effectiveness of binaural integration by bilateral CIs placement using binaural hearing tests and subjective auditory perceptual assessment. A 61-year-old bilateral CIs subject underwent the following four tests: the Japanese Hearing in Noise Test(HINT-J), the dichotic listening test(DLT), the Rapidly Alternating Speech Perception(RASP) test, and subjective auditory perceptual assessment. The HINTJ score was significantly higher for bilateral CIs than for a unilateral CI. However, DLT and the RASP test revealed contradictory results.Subjective auditory perceptual assessment revealed active and bright impressions for bilateral hearing, which were also noisy and strong compared with those for unilateral hearing. The results of this study revealed that bilateral CIs improved speech perception in background noise and an improved auditory impression, although the bilateral integration abilities were not improved. This was probably because the patient was required to combine information from the two ears into a single perception in DLT and the RASP test. More longitudinal data should be collected and analyzed in future studies to evaluate the long-term effects of bilateral CIs.Chie Obuchi Masae Shiroma Sayaka Ogane Kimitaka Kaga 2015Journal of Otology2015,10,4:2
8单原子配位结构及与载体相互作用的调控用于二氧化碳电催化还原显示文摘电催化二氧化碳还原(ECR)制备高值化学品被认为是在碳中和背景下实现可再生能源存储及降低CO浓度的一种有效策略。为了实现此目标,催化剂的开发与设计是ECR研究的关键。单原子催化剂(SACs)因其独特的电子结构、明确的配位环境和极高的原子利用率,近年来在ECR领域引起了广泛关注。通过调节SACs的中心金属元素种类和局部配位结构,可有效调节SACs对CO和其还原中间体的吸附强度和催化活性。本文总结了SACs在ECR领域所取得的最新研究进展,重点讨论了SACs的配位结构及其与载体之间的相互作用对催化活性的影响以及相关调控策略,最后,提出了SACs应用于ECR所面临的机遇与挑战。陈宇新 王丽君 姚志波 郝磊端 谭心怡 Justus Masa Alex W.Robertson 孙振宇 2022物理化学学报2022,38,11:2
9Phase I clinical trial of peptide vaccination with URLC10 and VEGFR1epitope peptides in patients with advanced gastric cancer显示文摘Yoshie Higashihara Junko Kato Akihito Nagahara Kentaro Izumi Masae Konishi Tomohiro Kodani Nobuko Serizawa Taro Osada Sumio Watanabe 2014International Journal of Oncology2014,,:2
10Effects of Feces on Spatial Distribution Patterns of Grazed Grassland Communities显示文摘Animals excrete feces during grazing.The uneven distribution of feces causes a spatial heterogeneity in grassland communities.In this study,we attempted to clarify the effects of feces on spatial distribution patterns of plant species.A field study was conducted on four grasslands each grazed by a single cow.These four grasslands were defined as Poa pratensis(Kentucky bluegrass) dominated grassland without feces(PoF-),Poa pratensis dominated grassland with feces(PoF+),Zoysia japonica Steud.(Japanese lawngrass) dominated grassland without feces(ZyF-),and Zoysia japonica Steud.dominated grassland with feces(ZyF+).A 50 m line that transects 100 equally spaced quadrats(L-quadrats) was drawn on each of the four grasslands.Each quadrat was 0.50 m × 0.50 m in size and consisted of four equal-area cells of 0.25 m × 0.25 m(S-quadrats).The occurrences of all plant species were recorded in each S-quadrat.The binomial distribution(BD) and beta-binomial distribution(BBD) were used to represent the variation in spatial patterns.The BBD provided a significant description of the frequency distribution of plants per quadrat.A power law was used to calculate the spatial heterogeneity of each species together with the community heterogeneity.The results revealed that the plants on each of the four grasslands were aggregatively distributed.The ZyF+ exhibited greater spatial heterogeneity than the ZyF-due to the uneven deposition of feces by cows grazing on the grasslands.Additionally we also found that the feces had effect on the heterogeneity inZyF+ and did not have effect in PoF+.Tamanna Islam Eiki Fukuda Masae Shiyomi Molla Rahman Shaibur Shigenao Kawai Mikinori Tsuiki 2010Agricultural Sciences in China2010,9,1:2
11Quantitative Detection of Disseminated Free Cancer Cells in Peritoneal Washes With Real-Time Reverse Transcriptase–Polymerase Chain Reaction: A Sensitive Predictor of Outcome for Patients With Gastric Carcinoma显示文摘Yasuhiro Kodera Hayao Nakanishi Seiji Ito Yoshitaka Yamamura Yukihide Kanemitsu Yasuhiro Shimizu Takashi Hirai Kenzo Yasui Tomoyuki Kato Masae Tatematsu 2002Annals of Surgery2002,,4:2
12Expression of osteopontin and CDX2: Indications of phenotypes and prognosisin advanced gastric cancer显示文摘Xia Zhang Tetsuya Tsukamoto Tsutomu Mizoshita Hisayo Ban Hidenori Suzuki Takeshi Toyoda Masae Tatematsu 2009Oncology Reports2009,,3:2
13Comparative analysis of antibody against measles virus in sera of vaccinated and naturally infected Japanese individuals of different age groups 显示文摘Masae I Yoshinobu O Hak H 2002J Clin Microbiol2002,40,5:1
14N-doped carbon synthesized from N-containing polymers as metal-free catalysts for the oxygen reduction under alkaline conditions显示文摘Anqi Zhao Justus Masa Martin Muhler Wolfgang Schuhmann Wei Xia 2013Electrochimica Acta2013,,:1
15Hepatic encephalopathy: from pathophysiology to treatment显示文摘MasA 2006Digestion2006,73,1:1
16Effects of magnetic field on the motion of multiphase flu- ids containing paramagnetic particles in porous media 显示文摘Masa Prodanvoic Seungyup Ryoo Amir Rahamni 2010SPE 1298502010,,:1
17Development of an immunochromatographic method to determineβ–lactoglobulin at trace levels显示文摘Puerta A Diez–Masa J C Frutos M 2005Analytica Chimica Acta2005,537,:1
18Squamous cell carcinoma antigen (SCC Ag) in the diagnosis and prognosis of lung cancer 显示文摘 Masa F de la Cruz J L 1994Chest1994,105,:1
19Varietal differences among the anthocyanin profiles of 50 red table grape cultivars studied by high per- formance liquid chromatography显示文摘POMAR F NOVO M MASA A 2005Journal of Chromatography A2005,1094,12:1
20Fabrication of three-dimensional porous cell-laden hydrogel for tissue engi- neering显示文摘HWANG C M SANT S MASAELI M 2010Biofabrieation2010,2,03:1
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