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161.
Carbon nanotubes (CNTs) were produced by laser ablation of a graphite composite target in argon and nitrogen ambient gas. To investigate the effect of nitrogen gas on CNTs formation, the plasma plume was examined using optical emission spectroscopy. The vibrational temperature of C2 molecules was estimated by fitting of a Swan band spectrum. The temperature in N2 ambient gas is lower than that in Ar ambient gas. In a nitrogen atmosphere, the spectrum intensity of C2 Swan band was enhanced and CN violet system was also observed. Soot collected in the reaction tube was observed using FE-SEM and TEM. The soot deposited in the nitrogen gas contained more bundled CNTs than those in Ar ambience. 相似文献
162.
Shunpei Yamazaki Takuya Hirohashi Masahiro Takahashi Shunsuke Adachi Masashi Tsubuku Junichi Koezuka Kenichi Okazaki Yohsuke Kanzaki Hiroshi Matsukizono Seiji Kaneko Shigeyasu Mori Takuya Matsuo 《Journal of the Society for Information Display》2014,22(1):55-67
Our crystalline In–Ga–Zn oxide (IGZO) thin film has a c‐axis‐aligned crystal (CAAC) structure and maintains crystallinity even on an amorphous base layer. Although the crystal has c‐axis alignment, its a‐axis and b‐axis have random arrangement; moreover, a clear grain boundary is not observed. We fabricated a back‐channel‐etched thin‐film transistor (TFT) using the CAAC‐IGZO film. Using the CAAC‐IGZO film, more stable TFT characteristics, even with a short channel length, can be obtained, and the instability of the back channel, which is one of the biggest problems of IGZO TFTs, is solved. As a result, we improved the process of manufacturing back‐channel‐etched TFTs. 相似文献
163.
Underwater vehicle-manipulator systems (UVMS) are expected to play an important role in ocean exploration. It is considered
that UVMS will be operated by both automatic and manual control. We have proposed an automatic control method. In this article,
we propose a master-slave system for a UVMS. The effectiveness of the proposed master-slave control system is demonstrated
by using a floating underwater robot with a 2-link manipulator. 相似文献
164.
Ayami Saga Masahiro Koseki Kotaro Kanno Jiuyang Chang Tomoaki Higo Daisuke Okuzaki Takeshi Okada Hiroyasu Inui Masumi Asaji Katsunao Tanaka Takashi Omatsu Sae Nishihara Yinghong Zhu Kaori Ito Hiroaki Hattori Ikuyo Ichi Yoshihiro Kamada Masafumi Ono Toshiji Saibara Tohru Ohama Shungo Hikoso Makoto Nishida Shizuya Yamashita Yasushi Sakata 《International journal of molecular sciences》2022,23(24)
Patients with psoriasis are at a higher risk of developing nonalcoholic fatty liver disease. We previously identified an oxidized derivative of cholesterol, 7-ketocholesterol (7KC), in diet-induced steatohepatitic mice. Here, we investigated whether 7KC exacerbates psoriasis-like dermatitis by accelerating steatohepatitis in mice. A high-fat/high-cholesterol/high-sucrose/bile salt diet (nonalcoholic steatohepatitis (NASH) diet) with or without 0.0125% 7KC was fed to C57BL/6 mice (7KC or control group) for three weeks to induce steatohepatitis. A 5% imiquimod cream was then applied to the ears and dorsal skin for four days to induce psoriasis-like dermatitis. Hepatic lipid accumulation and inflammatory cell infiltration were exacerbated in the 7KC group compared with the control group after three weeks. Serum tumor necrosis factor-α (TNF-α) levels were also elevated in the 7KC group (108.5 ± 9.8 vs. 83.1 ± 13.1 pg/mL, p < 0.005). Imiquimod cream increased the psoriasis area severity index (PASI) score in mice in the 7KC group (9.14 ± 0.75 vs. 5.17 ± 1.17, p < 0.0001). Additionally, Tnfa, Il23a, Il17a, and Il22 mRNA levels in the dorsal lesion were significantly upregulated. Finally, Th17 cell differentiation and the TNF signaling pathway were enhanced in the dorsal lesions and liver of mice in the 7KC group. These data suggest that steatohepatitis and psoriasis are linked by a potent, diet-related factor. 相似文献
165.
Kevinsanny Saburo Okazaki Osamu Takakuwa Yuhei Ogawa Koichi Okita Yusuke Funakoshi Junichiro Yamabe Saburo Matsuoka Hisao Matsunaga 《Fatigue & Fracture of Engineering Materials & Structures》2019,42(5):1203-1213
Tension‐compression fatigue tests were performed on two types of Ni‐based superalloy 718 with different microstructures in which small artificial defects of various sizes and shapes were introduced. The susceptibility of the fatigue strength to the defects varied significantly with the microstructure morphology, ie, a smaller grain size made the alloy more susceptible to defects. The fatigue limit as a small‐crack threshold was successfully predicted using the parameter model. The evaluation of the fatigue limit was classified into the following three stages depending on the defect size: (a) harmless defect regime, (b) small‐crack regime, and (c) large‐crack regime. Such a classification enabled comprehensive evaluation of the fatigue limit in a wide range of defect size, considering (a) defect size over a range of small crack to large crack and (b) characteristics of matrix represented by grain size and hardness. 相似文献
166.
Yuriko Okazaki Shinichiro Okazaki Shingo Asamoto Pang‐jo Chun 《Computer-Aided Civil and Infrastructure Engineering》2020,35(8):775-792
The growing demand for a more efficient maintenance of concrete bridges requires a model that tracks the deterioration of each bridge based on inspection data. Although it has been expected that machine learning could be applied to this problem, inspection data sparsely distributed over time are not suitable for machine learning in contrast to the continuous big data usually targeted. This study applies machine learning to a regression model of crack formation and propagation using inspection data to confirm the applicability. It includes the selection of the optimal algorithm, development of the model based on a novel methodology, and factor analysis using the model. Accordingly, the model was constructed by Gaussian process regression and it could appropriately extract the differences in the progress of crack damage due to multiple influential factors. The results demonstrate the excellent applicability of machine learning even to sparse data. 相似文献
167.
The heat transfers between the heating plane and the granular materials in both the “Stationary heating-plane type” and the “Moving heating-plane type” of the conductive-heating agitated dryers were discussed mainly from the view point of the scale-up of the dryer. Under the condition of complete mixing in the bed of bulk materials, the heat transfer models proposed for both the two types of dryers can predict the heat transfer coefficients in any sizes of the dryers. However, the complete mixing is not usually accomplished in the large scale of dryer. Hence, an “Incomplete mixing model” was proposed to estimate the effect of the incompleteness of mixing on the heat transfer coefficient. In this model, the incompleteness of mixing can be apparently taken into consideration only by increasing the contact time. 相似文献
168.
The effect of chlorphentermine (CP) treatment (50 mg/kg/ day, per os [po]) on the incorporation of [14C]choline into rat lung phospholipid was studied.Total phospholipid content was increased 2.0-fold and 1.7-fold after seven
and 14 days, respectively, compared with the pair-fed rats. The incorporation of [14C]choline into phosphatidylcholine (PC) was significantly inhibited by either seven or 14 days of CP treatment. Nevertheless,
the PC content was significantly increased by day 7 and stayed elevated at day 14 of CP treatment. Choline and phosphorylcholine
contents were significantly decreased by the CP treatment. These results suggest that the higher accumulation of PC is due
to inhibition of enzymes involved in the hydrolysis of phospholipids rather than to a stimulation of the phospholipid synthesis.
Presented in part at the SOT Meeting, Atlanta, GA, March 1984 (abstracted inThe Toxicologist 4[1], 64). 相似文献
169.
There has been considerable interest in silicon-on-insulator (SOI) technology recently because of its potential applications in VLSI. CMOS circuits in SOI have higher speed because of the absence of substrate capacitance, and freedom from latch-up because of dielectric isolation. Recently, memory circuits like DRAMs have reached the physical limits of what is possible in two dimensions, and hence there is a growing need for 3-dimensional circuits. SOI offers a possible avenue to realise such 3-D circuits and thus lead the way to the next generation of memories and integrated circuits. 相似文献
170.
S Takahashi E Narimatsu H Asanuma M Okazaki A Okazaki K Hirata M Mori T Chiba N Sato K Kikuchi 《Canadian Metallurgical Quarterly》1995,52(5):371-375
A case of laryngeal paraganglioma in a 25-year-old female is reported. The site of the tumor was the left aryepiglotic fold and ventricular band. The diagnosis was made by histology and immunohistochemistry medial thyrotomy was performed in order to remove a bilateral carotid paraganglioma. We analyzed 76 cases reported in the world literature, clinical, histological, prognostic, and therapeutic factors in laryngeal paraglioma. 相似文献