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World Journal of Gastroenterology 2006年第13期12卷 2133-2135页

作者： Yasuji Seyama Nobutaka Tanaka Yoshio Suzuki Motoki Nagai Takatoshi Furuya yukihiro Nomura Jimpei Ishii Masakazu Nobori Department of Surgery Asahi General Hospital ChibaJapan Department of Pathology Asahi General Hospital ChibaJapan

Spontaneous rupture is a rare complication of splenic hamartoma. A review of the literature revealed only four such cases. To the best of our knowledge, this is the first report of spontaneous rupture of splenic hamartoma associated with liver cirrhosis and portal hypertension. A 53-year-old woman, who was followed up for aortic dissection and hepatitis C virus （HCV）-related liver cirrhosis, was referred with sudden left chest and shoulder pain. An abdominal ultrasound showed intraabdominal bleeding, and computed tomography indicated rupture of a splenic tumor. Emergent splenectomy was carried out. The postoperative course was uneventful, and the patient was discharged on the 13th postoperative day. Pathology revealed the tumor to be a ruptured splenic hamartoma. The non-tumorous splenic parenchyma revealed congestive changes. We consider that the presence of liver cirrhosis and portal hypertension are risk factors for spontaneous rupture of the splenic hamartoma.

关键词： Splenic hamartoma Spontaneous rupture Hepatitis C virus Cirrhosis Portal hypertension

Shrinking in the dark: Parallel endosymbiont genome erosions are associated with repeated host transitions to an underground life

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INSECT SCIENCE 2024年第6期31卷 1810-1821页

作者： Beasley-Hall, Perry G. Kinjo, yukihiro Rose, Harley A. Walker, James Foster, Charles S. P. Kovacs, Toby G. L. Bourguignon, Thomas Ho, Simon Y. W. Lo, Nathan Univ Sydney Sch Life & Environm Sci Sydney NSW Australia Univ Adelaide Sch Biol Sci Adelaide SA 5000 Australia Okinawa Inst Sci & Technol Grad Univ Evolutionary Genom Unit Onna Okinawa Japan Australian Govt Dept Agr Water & Environm Canberra Australia Univ New South Wales Sch Comp Sci & Engn Sydney NSW Australia

Microbial symbioses have had profound impacts on the evolution of animals. Conversely, changes in host biology may impact the evolutionary trajectory of symbionts themselves. Blattabacterium cuenoti is present in almost all cockroach species and enables hosts to subsist on a nutrient-poor diet. To investigate if host biology has impacted Blattabacterium at the genomic level, we sequenced and analyzed 25 genomes from Australian soil-burrowing cockroaches (Blaberidae: Panesthiinae), which have undergone at least seven separate subterranean, subsocial transitions from above-ground, wood-feeding ancestors. We find at least three independent instances of genome erosion have occurred in Blattabacterium strains exclusive to Australian soil-burrowing cockroaches. These shrinkages have involved the repeated inactivation of genes involved in amino acid biosynthesis and nitrogen recycling, the core role of Blattabacterium in the host-symbiont relationship. The most drastic of these erosions have occurred in hosts thought to have transitioned underground the earliest relative to other lineages, further suggestive of a link between gene loss in Blattabacterium and the burrowing behavior of hosts. As Blattabacterium is unable to fulfill its core function in certain host lineages, these findings suggest soil-burrowing cockroaches must acquire these nutrients from novel sources. Our study represents one of the first cases, to our knowledge, of parallel host adaptations leading to concomitant parallelism in their mutualistic symbionts, further underscoring the intimate relationship between these two partners. Endosymbiotic bacteria live in the cells of other organisms. These microbes are particularly prevalent in insects, with whom they share a mutually beneficial relationship. In cockroaches, the endosymbiont Blattabacterium is vital for producing essential amino acids that hosts cannot acquire on their own. Soil-burrowing cockroaches of Australia are an interesting example in whic

关键词： Blattabacterium endosymbiosis gene loss molecular evolution parallel evolution subterranean habitats

In Situ Synchrotron X-ray Diffraction Studies of Single-walled Carbon Nanotubes for Electric Double-layer Capacitors

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Journal of Chemistry and Chemical Engineering 2015年第8期9卷 509-513页

作者： yukihiro Yoshida Masato Tsutsui Ayar Al-zubaidi Yosuke Ishii Shinji Kawasaki Nagoya Institute of Technology Gokiso Showa Nagoya Aichi 4668555 Japan.

In situ synchrotron X-ray diffraction experiments of SWCNT （single-walled carbon nanotube） electrode in alkali halide aqueous electrolyte at several applied potentials were performed, and the change in the diffraction pattern of SWCNTs was observed. It was found that the position of the 100 diffraction peak does not change with applied potential while the peak intensity decreases with anion adsorption. It was concluded that the space inside the tube would be the important ion adsorption site for the well-gown SWCNT bundles.

关键词： Carbon nanotubes synchrotron X-ray EDLC

Vegetation monitoring using different scale of remote sensing data

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Journal of Environmental Sciences 1999年第2期11卷 89-93页

作者： Junko Kunitomo, yukihiro Morimoto Department of Regional Environmental Science, Osaka Prefecture University, 1 1 Gakuen cho Sakai, Osaka 599 8531, Japan

This work sets out to simulate landscape model of Mu Us Desert in Inner Mongolia Autonomous Region of China at different spatial resolution using remote sensing images and distinguished landscape heterogeneity among different spatial resolutions. Landscape models were created from classification image of SPOT satellite data with 20m resolution and NOAA data with 1 km resolution. This study created landscape models of different scales by resampling the SPOT classified image using majority rule. The pixel resolution was increased from the finest scale of 20m by 20m up to 1000m by 1000m that was the coarsest spatial resolution. The Shannon diversity index was used to compare landscape models between different scales. At the finer scale the verify small patches such as deciduous forest, shrub and reedswamp with high vegetation coverage set on matrices with low vegetation cover (moving sand dune and sparse grassland) were verified. Broadening of scale resulted to the loss of small patches and at 1000m resolution, matrix classes were dominant. At 1km resolution of NOAA data, the matrix classes which greatly related to the topography of Mu Us Desert were detected. Diversity index decreased during scale broadening and the difference between SPOT 1km scale model and AVHRR data was not significant. The results showed that SPOT 20m model is good for the use of ecotone oriented revegetation planning, and NOAA 1km model is good for the seasonal and annual monitoring of each landscape unit, and revegetation planning at the regional level.

关键词： vegetation monitoring landscape model remote sensing Mu Us Desert.

Estimating glomerular filtration rate preoperatively for patients undergoing hepatectomy

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World Journal of Gastroenterology 2009年第18期15卷 2252-2257页

作者： Yoshimi Iwasaki Tokihiko Sawada Shozo Mori yukihiro Iso Masato Katoh Kyu Rokkaku Junji Kita Mitsugi Shimoda Keiichi Kubota Department of Gastroenterological Surgery Dokkyo Medical University880 KitakobayashiMibuTochigi321-0293Japan

AIM:To compare creatinine clearance(Ccr) with estimated glomerular filtration rate(eGFR) in preoperative renal function tests in patients undergoing ***:The records of 197 patients undergoing hepatectomy between August 2006 and August 2008 were studied,and preoperative Ccr,a three-variable equation for eGFR(eGFR3) and a five-variable equation for eGFR(eGFR5) were *** values were defined as Ccr < 50 mL/min,eGFR3 and eGFR5 < 60 mL/min per 1.73 *** maximum increases in the postoperative serum creatinine(post Cr) level and postoperative rate of increase in the serum Cr level(post Cr rate) were ***:There were 37 patients(18.8%) with abnormal Ccr,31(15.7%) with abnormal eGFR3,and 40(20.3%) with abnormal *** there were no significant differences in the post Cr rate between patients with normal and abnormal Ccr,eGFR3 and eGFR5 values,the post Cr level was significantly higher in patients with eGFR3 and eGFR5 abnormality than in normal patients(P < 0.0001).Post Cr level tended to be higher in patients with Ccr abnormality(P = 0.0936 and P = 0.0875,respectively).CONCLUSION:eGFR5 and the simpler eGFR3,rather than Ccr,are recommended as a preoperative renal function test in patients undergoing hepatectomy.

关键词： Estimated glomerular filtration rate Creatinine clearance test Hepatectomy Renal functiontest

Intramanchette transport during primate spermiogenesis： expression of dynein, myosin Va, motor recruiter myosin Va, VIIa-Rab27a/b interacting protein, and Rab27b in the manchette during human and monkey spermiogenesis

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Asian Journal of Andrology 2008年第4期10卷 561-568页

作者： Shinichi Hayasaka yukihiro Terada Kichiya Suzuki Haruo Murakawa Ikuo Tachibana Tadashi Sankai Takashi Murakami Nobuo Yaegashi Kunihiro Okamura Department of Obstetrics and Gynecology Tohoku University School of Medicine Sendai Miyagi 980-8574 Japan Suzuki Memorial Hospital lwanuma Miyagi 989-2481 Japan Tsukuba Primate Research Center National Institute of Biomedical Innovation Tukuba Ibaraki 305-0843 Japan

Aim： To show whether molecular motor dynein on a microtubule track, molecular motor myosin Va, motor recruiter myosin Va, VIIa-Rab27a/b interacting protein （MyRIP）, and vesicle receptor Rab27b on an F-actin track were present during human and monkey spermiogenesis involving intramanchette transport （IMT）. Methods： Spermiogenic cells were obtained from three men with obstructive azoospermia and normal adult cynomolgus monkey （Macacafascieularis）. Immunocytochemical detection and reverse transcription-polymerase chain reaction （RT-PCR） analysis of the proteins were carried out. Samples were analyzed by light microscope. Results： Using RT-PCR, we found that dynein, myosin Va, MyRIP and Rab27b were expressed in monkey testis. These proteins were localized to the manchette, as shown by immunofluorescence, particularly during human and monkey spermiogenesis. Conclusion： We speculate that during primate spermiogenesis, those proteins that compose microtubule-based and actin-based vesicle transport systems are actually present in the manchette and might possibly be involved in intramanchette transport.

关键词： intramanchette transport manchette spermiogenesis

Structure-Function Relationship of a Gellan Family of Polysaccharide, S-198 Gum, Produced by Alcaligenes ATCC31853

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Advances in Biological Chemistry 2016年第3期6卷 55-69页

作者： Masakuni Tako Seiko kitajima Takuya Yogi Keiko Uechi Masayuki Onaga yukihiro Tamaki Shuntoku Uechi Department of Subtropical Bioscience and Biotechnology University of the Ryukyus Okinawa Japan Health and Longevity Research Laboratory Integrated Innovation Research Center University of the Ryukyus Okinawa Japan

The structure-function relationship of a gellan family of polysaccharides, S-198 gum produced by Alcaligenes ATCC31853 was investigated in terms of rheological aspects. The flow curves of S-198 gum showed plastic behavior above 0.3%. Gelation did not occur in S-198 gum solution at low temperature (0℃), even at 0.8%. Both the viscosity and the elastic modulus remained constant with increasing temperature up to 80?C. The elastic modulus decreased a little with the addition of CaCl2 (6.8 mM), but then once again remained constant up to 80℃. The highest elastic modulus was observed for deacylated gellan gum with the addition of CaCl2 and increased slightly with increasing temperature up to 80℃, which was considered to be a transition temperature, after which it decreased rapidly. The elastic modulus of S-198 gum in the presence of urea (4.0 M) was lower than that in aqueous solution at low temperature (0℃), but remained constant with increasing temperature up to 80℃. The intramolecular associations, (hydrogen bonding and van der Waals forces of attraction), of S-198 gum molecules in aqueous solutions were proposed. The gellan family of polysaccharides, S-198, S-88, S-657, rhamsan, welan and gellan gum, provided a good opportunity to investigate the structure-function relationship for polysaccharides.

关键词： S-198 Gum Alcaligenes ATCC31853 Thermal Stability Intramolecular Associations Gellan Family of Polysaccharide

三氧化二砷对慢性粒细胞白血病细胞系的作用(英文)

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中国实验血液学杂志 2002年第5期10卷 413-418页

作者：景红梅 Shimizu yukihiro 克晓燕 Kashii Yoshiro Watanabe Akiharu 北京大学第三医院血液科北京100083 日本富山医科药科大学第三内科

本研究探讨三氧化二砷 (As2 O3)对两种慢性粒细胞白血病 (CML)细胞系有无作用及作用机制。实验选用了两种不同的CML细胞系KU81 2和MEG 0 1及两种其它白血病细胞系U937和PL2 1 ,加入不同浓度的As2 O3(0 .2 ,2和 1 0 μmol/L) ,在不同时... 详细信息

本研究探讨三氧化二砷 (As2 O3)对两种慢性粒细胞白血病 (CML)细胞系有无作用及作用机制。实验选用了两种不同的CML细胞系KU81 2和MEG 0 1及两种其它白血病细胞系U937和PL2 1 ,加入不同浓度的As2 O3(0 .2 ,2和 1 0 μmol/L) ,在不同时间计数活细胞数 ,观察细胞形态 ,并以TUNEL法和DNA凝胶电泳检测细胞有无凋亡的发生 ;同时检测 0 .2 μmol/LAs2 O3作用时细胞表面CD34 ,CD1 3 ,CD33 ,CD1 9,CD1 1b ,CD1 4和CD7的变化 ,并通过RT PCR检测细胞bcr abl水平及caspase 3的变化。研究结果发现 ,不同浓度的As2 O3对 4种细胞系的作用不同 ,1 0 μmol/L时 4种细胞系均会发生细胞凋亡 ,2 μmol/L时则仅CML细胞系KU81 2和MEG 0 1会产生凋亡 ,0 .2μmol/L时 4种细胞系均不发生凋亡。在培养 2 4小时后 ,4种细胞系表面的CD34 ,CD1 3 ,CD33 ,CD1 9,CD1 1b ,CD1 4和CD7等均无明显改变。RT PCR检测bcr abl的水平发现在 2种CML细胞系中无明显改变 ,其caspase 3的活性较对照细胞均有所增加。结论 :As2 O3在较高浓度下可诱导 4种白血病细胞系产生凋亡 ,在 2 μmol/L仅可诱导CML来源的两种细胞系产生凋亡 ,CML细胞系对As2 O3较其它两种细胞系敏感 ,其作用机制与caspase

关键词：三氧化二砷慢性粒细胞白血病细胞系细胞凋亡 bcr—abl mRNA caspase—3 作用机制

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压入工法：解决都市型建设问题的技术

地下空间与工程学报 2010年第A02期6卷 1707-1713页

作者：石原行博株式会社技研制作所日本

在全球首次将压入原理付诸于实用的压入工法,其原理是利用抓住已完成打设的桩材获得反力,用静载荷将下一根桩压入地面的施工技术。因该工法只需极小的施工场地,所以在用地紧张的密集城市中心,诸如紧邻建筑物、上空存在高架桥、临近交通... 详细信息

在全球首次将压入原理付诸于实用的压入工法,其原理是利用抓住已完成打设的桩材获得反力,用静载荷将下一根桩压入地面的施工技术。因该工法只需极小的施工场地,所以在用地紧张的密集城市中心,诸如紧邻建筑物、上空存在高架桥、临近交通干道或铁路、大型机械无法进入的狭窄地段、高密度的居民区等施工条件复杂、难度高的区域,也可以克服以上苛刻条件利用各种桩材实现无振动无噪音的安全环保施工。另外,通过使用系统机械,在水上与斜坡施工时不需要搭建临时栈桥与暂设工程,并且可以在换算N值为500的坚硬地质实现钢板桩的压入施工。该工法不仅对日本的都市化进程做出了贡献,而且被广泛应用于世界各地30多个国家的相关工程中,是一种解决都市型建设问题的环保施工技术。

关键词：打桩工程静载荷钢板桩坚硬地质都市

时间分辨与偏振红外光谱研究电场诱导下手性反铁电液晶的翻转过程

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光谱学与光谱分析 2000年第5期20卷 598-600页

作者：赵冰 AL Verma 尾崎幸洋吉林大学超分子结构与谱学开放实验室 Department of Physics North-Eastern Hill UniversityShillong-793022India 关西学院大学理学院

手性反铁电液晶分子中的各个不同片段、不同基团在电场诱导下展现不同的取向与取向分布。在交变电场的作用下 ,分子中各个部分的翻转动力学行为也表现的不同。

关键词：偏振红外光谱手性反铁电液晶翻转动力学