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21.
Norifumi Katafuchi Mutsuo Sano Shuichi Ohara Masashi Okudaira 《Machine Vision and Applications》2000,12(4):170-176
A new method based on an optics model for highly reliable surface inspection of industrial parts has been developed. This
method uses multiple images taken under different camera conditions. Phong's model is employed for surface reflection, and
then the albedo and the reflection model parameters are estimated by the least squares method. The developed method has advantages
over conventional binarization in that it can easily determine the threshold of product acceptability and cope with changes
in light intensity when detecting defects. 相似文献
22.
The adsorption of alginate gel (AG) beads and AG with activated carbon entrapped (AG–AC) beads prepared using different types of metal ions were investigated by measuring the removal of several organic compounds with different charges and size. AG–AC beads prepared in a CaCl2 solution adsorbed strongly positively charged compounds as well as electrically neutral and low molecular weight compounds such as p-chlorophenol. However, a high molecular weight humic acid was not adsorbed by AG–AC. The AG–AC selectively adsorbed p-chlorophenol from a humic acid solution. The adsorption capacity obtained from the adsorption isotherm of AC entrapped in AG was compared with that of AC. The AG–AC beads prepared in a solution of FeCl3 were able to specifically adsorb negatively charged gallic acid. Thus, entrapping AC into AG resulted in the selective adsorption. 相似文献
23.
Shirasaka N Ohnishi H Sato K Miyamoto R Terashita T Yoshizumi H 《Journal of Bioscience and Bioengineering》2005,100(6):653-656
Linoleic acid hydroperoxide (LAOOH) was effectively degraded by horseradish peroxidase (HRP) in the presence of quercetin. Several natural phenolic antioxidants, such as quercetin, capsaicin, and alpha-tocopherol, acted as good hydrogen donors in the peroxidase reaction that occurs during lipid hydroperoxide degradation. However, glutathione, which is a non-phenolic antioxidant that acts as a hydrogen donor for glutathione peroxidase, could not suppress lipid peroxidation in the presence of HRP. Lipid hydroperoxides generated from eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) were also degraded with HRP in the presence of quercetin, and oxidative decomposition of DHA was suppressed by this reaction. 相似文献
24.
Eimei Oyama Naoji Shiroma Norifumi Watanabe Arvin Agah Takashi Omori Natsuo Suzuki 《Advanced Robotics》2016,30(3):151-164
Performing general human behavior by experts’ navigation is expected to be realized as wearable technologies and computing systems are further developed. We have proposed and developed the prototype of the advanced behavior navigation system (BNS) using augmented reality technology. Utilizing the BNS, an expert can guide a non-expert to perform a variety of tasks. The BNSs are useful in tasks to be performed in harsh and hazardous environments, such as factories, construction sites, and areas affected by natural disasters (e.g. earthquakes and tsunamis). In this paper, we present a BNS that is specifically designed to operate in harsh environments, with characteristics such as wet or dusty conditions. The implementation, experimental results, and evaluation of the BNS prototypes are presented. 相似文献
25.
Murase R Abe Y Takeuchi T Nabeta M Imai Y Kamei Y Kagawa-Miki L Ueda N Sumida T Hamakawa H Kito K 《Proteomics. Clinical applications》2008,2(4):517-527
The purpose of this study is to establish a tumor marker that can be applied for the early detection and follow-up of oral cancer patients. Employing the proteomic approach using MALDI TOF-MS, 2-DE, patient's sera and culturing cell lines, the serum autoantibodies (autoAbs) were screened and the serum levels were estimated by ELISA. Targeting the tumor cell invasion into the surrounding stromal tissues, MRC-5 human fibroblasts were employed as the target cells and a mitochondrial membrane protein, sideroflexin 3 (SFXN3), was identified. The serum anti-SFXN3-autoAb levels elevated in patients with the oral squamous cell carcinoma significantly: with 77% sensitivity and 89% specificity against control samples. The serum anti-SFXN3-autoAb levels were mildly correlated with the primary tumor sizes, however, the levels were slightly highly elevated in T1 early cancer. An immunohistochemical analysis revealed that the SFXN3 protein is expressed in the stromal fibroblasts between the caner nests and also in the basal layer of the squamous epithelium. Changes in the serum anti-SFXN3-autoAb levels after therapy correlated with the clinical tumor burden. These findings demonstrated that the serum anti-SFXN3-autoAb is worthy of clinical evaluation as a potentially of the novel tumor maker for the early detection of oral squamous cell carcinoma. 相似文献
26.
Eri Sawada Hiroshi Kakehi Yukiyasu Chounan Masashi Miura Yusuke Sato Norifumi Isu Hideo Sawada 《Composites Part B》2010,41(6):498-502
Fluoroalkyl end-capped vinyltrimethoxysilane oligomer suffered the sol–gel reaction under alkaline conditions in the presence of titanium oxide nanoparticles in tetrahydrofuran to afford the corresponding fluorinated oligomer/titanium oxide nanocomposites[RF-(VM-SiO2)n-RF/TiO2] in excellent to moderate isolated yields. These fluorinated composites thus obtained were nanometer size-controlled fine particles, and exhibited good dispersibility and stability in traditional organic solvents except for water. These fluorinated nanocomposites were applied to the surface modification of glass to exhibit not only a completely superhydrophobic characteristic (a water contact angle: 180°) with a non-wetting property against water droplets but also a good oleophobicity imparted by fluoroalkyl segments in the composites on their surface. Of particular interest, we have found that the wettability for water can be switched between superhydrophobicity and superhydrophilicity by alternation of ultraviolet (UV) irradiation and dark storage with keeping a good oleophobicity on the modified surface treated with the anatase-type titanium oxide composite. 相似文献
27.
Norifumi Asahara Ken‐ichiro Naito Itsuro Kitagawa Michitaka Matsuo Masanori Kumakura Masaki Iwasaki 《国际钢铁研究》2011,82(5):587-594
It is important to understand the physical interaction between top‐blown oxygen jets and liquid steel in basic oxygen steelmaking furnaces (BOF). In the present study, cold model experiments and CFD simulations were carried out with single‐ and multi‐hole nozzles and the velocity profiles of jets were successfully simulated. Water model experiments were also performed to study the cavity formation and the spitting phenomena by the impinging jets. The cavity shapes and the spitting behavior were correlated to the top‐blowing conditions by considering the characteristics of multi‐hole nozzle jets. 相似文献
28.
N Kawakami O Shoji Y Watanabe 《Chembiochem : a European journal of chemical biology》2012,13(14):2045-2047
Hemoproteins on their metal: We report a novel strategy for the reconstitution of hemoproteins with non-natural metal complexes; simple addition of manganese and ruthenium porphyrin to E. coli cells immediately prior to homogenization yields the reconstituted proteins. We believe that this simple approach could become a standard reconstitution method for hemoproteins. 相似文献
29.
Light intensity analysis was carried out to consider the constriction of plasma jet with the application of a strong magnetic field. Argon was employed as working gas. Plasma jet was generated in a vacuum chamber by a plasma torch and went into a magnet bore. The magnet composed of a pair of superconducting coils imposes a strong axial magnetic field on the jet. The jet between the coils was taken with a digital single-lens reflex camera through viewing window. The light intensity is determined from the RAW image files of the camera with the software for analyzing the RAW format. The jet constriction with applied magnetic field was evaluated quantitatively on the basis of the obtained results. The distributions of the light intensity were also compared with those of the typical spectral lines from excited argon that were measured at the same time as shooting the images. The results suggest that the light intensity analysis of the RAW image files could be utilized for the quantitative evaluation of the constriction of plasma jet due to the magnetic field. 相似文献
30.
The characterization of the typical fly ashes from pressurized fluidized bed combustion system (PFBC) in Japan and Europe was carried out by electron microscopy and phase analysis using energy-dispersive X-ray spectroscopy (EDX). The purity of limestone as in-bed sulfur removal sorbent influences the desulfurization reaction. The high-purity limestone yielded both hydroxyl ellestadite and anhydrite in Japanese PFBC ashes, while dolomite-rich limestone yielded anhydrite in European PFBC ashes. When the high-purity limestone was used, hydroxyl ellestadite particles were observed as the independent particles or the rim around limestone particles. The Al2O3 content in the glassy phase was inversely proportional to the CaO content in the glassy phase, suggesting that the glassy phases were formed from metakaoline and calcite as end members. Since hydroxyl ellestadite, glassy phase and metakaoline are reactive under hydrothermal conditions, PFBC ashes are expected to be used as raw materials for autoclaved products. 相似文献