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71.
The action mechanism of vanadocene dichloride, Cp2VCl2 (Cpη5-C5H5), has been investigated by interaction with apo-transferrin and albumin for its promising antitumor activities. Our ESR spectral studies clearly showed that VIV ion is readily transported from vanadocene chloride to transferrin, and the VIV ions are captured at the Fe(III) binding sites of transferrin as a VO2+ form. We also observed that some binuclear VO2+ complexes can efficiently transport the VO2+ ions to the apo-transferrin. 相似文献
72.
Ahmed Jalal Samed Takayuki Tanaka Shin Hamada Keita Ikeue Masato Machida 《Catalysis communications》2009,10(15):1995-1999
Catalytic light-off of a stream of NO, H2, CO in an excess O2 has been studied over various metal oxides loading 1 wt% Pt. Because a low-surface area Y2O3 (<5 m2 g−1) was found to exhibit the highest de-NOx activity, a mesoporous Y2O3 was then synthesized from an yttrium-based surfactant mesophase templated by dodecyl sulfate , which was anion-exchanged by acetate (AcO = CH3COO−). The product showed a 3-D mesoporosity with a large surface area (396 m2 g−1) and the Pt-supported catalyst achieved much improved light-off characteristics suitable for the low-temperature de-NOx in the presence of CO and excess O2. 相似文献
73.
Yoshiyuki Yokogawa Keita Sasada Koji Hirabayashi Suguru Inamura Takeshi Suyama 《IET nanobiotechnology / IET》2020,14(8):662
The preparation of lamellar type mesoporous silica (MPS) compact through the spark plasma sintering (SPS) and the adsorption/desorption of protein onto MPS compact are reported to be compared with those onto 2d‐hexagonal and 3d‐cubic type MPS compacts. A lamellar‐type MPS powder (MPS‐la) was prepared using triblock copolymer, PEO5 PPO68 PEO5, and was compacted in a carbon die and heated at 500°C for 5 min under uniaxial pressure. The products are referred to as MPS‐la‐500. The MPS compacts keep the lamellar type mesoporous configuration. The adsorbed amount of protein onto MPS‐la‐500 was 100 mg/g, while that on MPS‐la was 130 mg/g, and the former decreased by 23%. However, its decreasing ratio of the protein adsorption on MPS‐la‐500 was less than those of 2d‐hexagonal and 3d‐cubic type MPS compacts, which were 73 and 34%, respectively. The released amount of protein into PBS solution from MPS‐la‐500, which was soaked in the protein solution for 48 h, increased with the soaking time, while those from 2d‐ and 3d‐type MPS compacts reached to plateau for 4 h of soaking. The lamellar type MPS compact was found to be easier to absorb and release proteins, which may be due to the large aperture of the mesoporous configuration.Inspec keywords: silicon compounds, polymer blends, mesoporous materials, adsorption, plasma materials processing, proteins, sintering, powders, desorption, compaction, molecular biophysicsOther keywords: lamellar‐type MPS powder, PEO5PPO68PEO5, MPS‐la‐500, protein adsorption, lamellar type MPS compact, 3d‐cubic type MPS compact, spark plasma sintering, 2d‐hexagonal type MPS compacts, lamellar type mesoporous silicate compacts, lamellar type mesoporous silica compact, desorption, triblock copolymer, uniaxial pressure, PBS solution, protein solution, soaking time, temperature 500.0 degC, time 5.0 min, time 48.0 hour, time 4.0 hour, SiO2 相似文献
74.
Tadaki Miyoshi Keita Ushigusa Kouto Migita Masakatsu Tamechika Nobuko Tokuda Teruhisa Kaneda 《Journal of Materials Science》2008,43(1):203-206
Thermoluminescence of X-ray-irradiated CdS-doped glasses has been measured, and relation between thermoluminescence and induced
absorption in the X-ray-irradiated CdS-doped glasses has been investigated. The effect of thermal annealing and the X-ray
energy dependence of thermoluminescence is different from that on the induced absorption. Therefore, defects, which are responsible
for thermoluminescence, are considered to be different from those responsible for the induced absorption. 相似文献
75.
76.
Ken Nakano Keita Horiuchi Akio Kashimoto Masahito Yokoyama 《Tribology International》2010,43(11):1978-1990
An expert system has been developed to predict the degree of tactile comfort during the application of cosmetic foundation. A tribometer using compliant silicone-rubber surfaces was developed to perform 4 sliding tests and an oscillating test. From the tests for 20 different samples, 11 feature quantities were identified. The values of the feature quantities were used as the inputs to an artificial neural network, and the scores of tactile sensations were obtained as the outputs. The neural network, after supervised learning, could predict 5 types of emotional tactile comfort with high accuracy. 相似文献
77.
78.
BACKGROUND: The aim of this study was to determine and analyze the rate of chronic open-angle glaucoma in C?te d'Ivoire. METHODS: The prevalence of chronic glaucoma (POAG) was retrospectively evaluated in a population of 33,000 patients attending a private clinic including 24,751 black subjects and 8,249 white subjects. Patients with a cup/disc superior to 0.5 and an abnormal Goldmann's kinetic perimetry, associated with (POAG with "elevated" pressure or not (POAG with normal pressure) with an intraocular hypertension (intra ocular pressure superior to 21 mmHg) were distinguished. RESULTS: Prevalence was from 2.1% for the black subjects and 0.75% for the white subjects. Mean age was 46.4 +/- 12.5 years for blacks subjects versus 52.8 +/- 12.2 years for white subjects. This prevalence increased with age in both populations. Out of 571 cases of POAG, 465 (81.4%) were previously known and 450 of them were treated; 38.5% of the POAG cases had normal pressure. CONCLUSION: Primary open-angle glaucoma is a major health care problem emphasizing the need for detection and prevention in C?te d'Ivoire. 相似文献
79.
In this study, a mental workload of daily mental arithmetic training was objectively evaluated by physiological indices using
the emotion spectrum analysis for a group with such training. Physiological measurements of the mental arithmetic task were
conducted once a week for each subject. The physiological indices measured were the α-wave power spectrum, the β-wave power
spectrum, the θ-wave power spectrum, variations in nasal skin temperature, and the high-frequency component of heart rate
variability. Any depressive tendency during the mental arithmetic task was measured as a psychophysical index by using the
Profile of Mood States (POMS) (brief form), and the time taken for the mental arithmetic task was also measured as a performance
index. Correlations among physiological indices, the psychological index, the performance index, and the emotion spectrum
were analyzed in relation to the mental workload. 相似文献
80.
An experimental study was conducted to investigate transient local heat transfer around a bubble at onset of boiling on a thin glass heating plate immersed in saturated n-hexane at low pressure. Eight rapid response Cu-Ni thermocouples consisting of a vacuum deposited thin film were used to measure the temperature change of the heating surface. Simultaneous high-speed video photographs were also obtained. The surface temperatures near a nucleation site decreased rapidly owing to the evaporation of a thin layer (microlayer) of liquid formed beneath the bubble in the early period and the rate of bubble growth increased with increasing incipient boiling superheat (ΔTIB). The thickness of the microlayer decreased markedly with increasing ΔTIB. © 1998 Scripta Technica, Heat Trans Jpn Res, 26(7): 484–492, 1997 相似文献