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51.
Satoshi Ohara Tahereh Mousavand Takafumi Sasaki Mitsuo Umetsu Takashi Naka Tadafumi Adschiri 《Journal of Materials Science》2008,43(7):2393-2396
Continuous production of highly crystalline ZnO nanorods by supercritical hydrothermal synthesis was reported in this article.
Zinc nitrate aqueous solution was pressurized to 30 MPa at room temperature and rapidly heated to 673 K by mixing with supercritical
water and then fed into a tubular reactor. Residence time is about 10 s. Production of ZnO nanorod particles with uniform
particle size distribution showed a strong ultraviolet light emission at room temperature. This article also reported in-situ
surface modification of ZnO nanorods with organic reagents by the supercritical hydrothermal synthesis. 相似文献
52.
Milk‐derived peptide Val‐Pro‐Pro (VPP) inhibits obesity‐induced adipose inflammation via an angiotensin‐converting enzyme (ACE) dependent cascade 下载免费PDF全文
53.
Togashi T Yokoo N Umetsu M Ohara S Naka T Takami S Abe H Kumagai I Adschiri T 《Journal of Bioscience and Bioengineering》2011,111(2):140-145
Recently, a zinc oxide (ZnO)-binding peptide (ZnOBP) has been identified and has been used to assist the synthesis of unique crystalline ZnO particles. We analyzed the influence of ZnOBP on the crystal growth of ZnO structures formed from zinc hydroxide. The addition of ZnOBP in the hydrothermal synthesis of ZnO suppressed [0001] crystal growth in the ZnO particles, indicating that the specificity of the material-binding peptide for specific inorganic crystal faces controlled the crystal growth. Furthermore, the dipeptides with a partial sequence of ZnO-binding "hot spot" in ZnOBP were used to synthesize ZnO particles, and we found that the presence of these dipeptides more strictly suppressed (0001) growth in ZnO crystals than did the complete ZnOBP sequence. These results demonstrate the applicability of dipeptides selected from material-binding peptides to control inorganic crystal growth. 相似文献
54.
N,O-type organic chelates reduced coordinated Cu2+ ions under hydrothermal reaction conditions to produce Cu2O/CuO nanoparticles. Chelates in which the N and O atoms are closely spaced produced smaller amounts of CuO nanoparticles, indicating their higher ability to reduce Cu2+ ions to Cu+ ions. [Cu(Gly)2]2 with the shortest ligand chain length produced only Cu2O nanoparticles and, therefore, can be used as a single molecule precursor for the synthesis of Cu2O nanoparticles. 相似文献
55.
R. Maric T. Fukui S. Ohara H. Yoshida M. Nishimura T. Inagaki K. Miura 《Journal of Materials Science》2000,35(6):1397-1404
A variety of spray pyrolysis (SP) techniques have been developed to directly produce ceramic powders from solutions. Examples that are discussed include the following powders: (La0.8Sr0.2)0.9MnO3-YSZ (La(Sr)MnO3-YSZ), La0.6Sr0.4CoO3 (La(Sr)CoO3), (CeO2)0.8(SmO1.5)0.2-NiO (SDC-NiO) and La0.9Sr0.1Ga0.8Mg0.2O3-NiO (LSGM-NiO). For all these powders, spherical, non-agglomerated, submicrometer particles were obtained from aqueous solution of metal salts into a furnace using an ultrasonic atomizer at 1.7 MHz. After SP some of the particles exhibit a hollow-shell morphology. Subsequent calcination at 1000°C yielded crystalline particles. The electrical performance of Ni-SDC/LSGM/La(Sr)CoO3 fuel cells operating at 800°C, prepared from the powders obtained by SP, is reported. 相似文献
56.
Yasushi Mae Hideyasu Takahashi Kenichi Ohara Tomohito Takubo Tatsuo Arai 《Intelligent Service Robotics》2011,4(1):91-98
The paper presents a robot system design with highly reusable components for a component-based robot system for manipulation tasks. The robot system is designed based on the analysis of manipulation tasks using a unified modeling language use case diagram. For a service robot with locomotion and manipulation mechanisms, reusability of robot system components is improved by adopting the proposed design. Our structure consists of scenario, task, robot information management server, data analyzer, sensor hardware controller, skill, and motion hardware controller on a component-based robot system. Based on the proposed robot system, we implemented a component-based robot system and subsequently realized a grasping motion by a service robot. 相似文献
57.
Donor-site complications, specifically chest wall deformities and thoracic scoliosis, occurring after harvest of costal cartilage grafts are presented and discussed. The cases of 18 patients (12 male and 6 female), who underwent costal cartilage grafts for microtia reconstruction from 1975 to 1993, were reviewed for donor-site complications using radiography and physical examination. Ribs from which costal cartilage had been harvested showed increased inward bowing on radiographs in 16 of 32 donor sites. The frequency of rib deformity in donor sites was 20.0 percent when cartilages were harvested from patients older than 10 years of age, whereas it was 63.6 percent in patients younger than 10 years old. This difference was statistically significant (p = 0.027, Fisher's exact test), although only 32 grafts were performed in 18 cases. The upper ribs demonstrate a higher incidence of deformity than lower ribs. Thoracic scoliosis was found in 4 of 16 cases. The biomechanical impact of these deformities was considered because of respiratory movement of the thorax and injury to the germinal growth center of the ribs. We recommend delaying costal cartilage grafts for as long as possible, leaving the costochondral junction intact to minimize chest wall deformity and thoracic scoliosis. 相似文献
58.
K Ohara HD Xu N Mori Y Suzuki DS Xu K Ohara ZC Wang 《Canadian Metallurgical Quarterly》1997,42(9):760-766
Anticipation, i.e., a decrease in the age of onset and/or an increase in the severity of a disease in subsequent generations, and imprinting, i.e., different modes of parental transmission, have been suggested in trinucleotide repeat amplification diseases. The purpose of this study was to determine if anticipation and imprinting are associated with familial schizophrenia. Two generations of 49 schizophrenics from 24 families were studied. Ages of onset, numbers hospitalized, diagnostic subclasses of schizophrenia, amounts of antipsychotics, positive symptoms, negative symptoms, treatment resistance, and clinical course ratings, were compared between the two generations. The age of onset was significantly lower in the offspring generation, although there was no difference in the severity between the two generations. The negative symptom scores and clinical course scores in the offspring generation for paternal transmission were significantly higher than those for maternal transmission. Our results suggest the presence of imprinting and anticipation in schizophrenia. 相似文献
59.
60.
Barium Titanate Ceramics with High Piezoelectricity Fabricated from Fibrous Particles 总被引:1,自引:0,他引:1
Yoshinobu Ohara Kunihito Koumoto Hiroaki Yanagida 《Journal of the American Ceramic Society》1985,68(4):108-C
Barium titanate ceramics with high degrees of c-axis orientation were fabricated from fibrous particles. The maximum piezoelectric constant, d33 , obtained was ≅270 pC/N, which is much higher than values reported previously. 相似文献