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1.
Heat Gelling Properties of Hen's Egg Yolk Low Density Lipoprotein (LDL) in the Presence of Other Protein 总被引:2,自引:0,他引:2
Ovalbumin (OV), bovine serum albumin (BSA) and lysozyme (Lys) were added to egg yolk low density lipoprotein (LDL) and the heat-induced gel formation of LDL-protein mixture was studied. The gel formation of LDL-protein mixture was different between the acidic and alkaline pH region; fine stable gels were formed in the alkaline pH region, but weak paste-like gels were formed in the acidic pH region. The effect of added BSA or OV on the gel strength of LDL was much larger than that of Lys. Scanning electron micrographic observation showed that the microstructures of both LDL-BSA and LDL-OV gels were more uniform than that of LDL-Lys gel. 相似文献
2.
An obstacle avoidance scheme of a two-wheeled mobile robot is shown by selecting an appropriate Lya- punov function. When considering the obstacle, the Lyapunov function may have some local minima. A method which erases the local minima is proposed by using a function which covers the minima with a plane surface. The effectiveness of the proposed method is verified by numerical simulations. 相似文献
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Dependence of Vacuum Electrical Breakdown Field and Field Enhancement Factor on the Number of Apertures Drilled in Small Electrodes
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RYO ISHIDA YASUSHI YAMANO SHINICHI KOBAYASHI ATSUSHI KOJIMA MASAYA HANADA YOSHIO SAITO 《Electrical Engineering in Japan》2016,196(3):3-12
Dark current based on field emission current is considered to be a factor causing the vacuum electrical breakdown between multiaperture acceleration grids in the JT‐60 negative ion source. In this paper, we focus on field enhancement factor, which is a key parameter of field emission from the electrode. Vacuum breakdown testing for small‐sized electrodes simulating the multiaperture acceleration grids of the negative ion source was performed. We found the field enhancement factor and breakdown field for multiaperture electrodes, and we investigated the dependence of each parameter on the number of apertures. The results revealed that an increase in the average field enhancement factor after the end of conditioning resulting from an increase in the number of apertures led to a decrease in the dielectric strength of the multiaperture electrodes. 相似文献
4.
EFFECTS OF PRE- AND POSTMORTEM GLYCOLYSIS ON POULTRY TENDERNESS 总被引:1,自引:0,他引:1
5.
RRT (rapidly exploring random tree) with random sampling is an effective method for path planning, and is often used for robot manipulators. The RRT has many modified methods for applying various problems and conditions. Particularly, T‐RRT (Transition‐based RRT) one of those has advantage that it is able to adopt arbitrary evaluation function. In this paper, a novel path planning method based on the T‐RRT is proposed for ensuring “quality” of a generated path. Then, its effectiveness is evaluated via comparison with other sampling‐based methods using simulation of the industrial robot having seven DOFs. 相似文献
6.
ANDREA P. RODRIGUEZ HIDETSUGU TSUJIGIWA MEHMET GUNDUZ BEYHAN CENGIZ NORIYUKI NAGAI RYO TAMAMURA SILVIA S. BORKOSKY TOHRU TAKAGI MIHO INOUE HITOSHI NAGATSUKA 《Biocell》2009,33(1):39-47
Progenitor cells play an important biological role in tooth and bone formation, and previous analyses during bone and dentine induction have indicated that they may be a good alternative for tissue engineering. Thus, to clarify the influence of the microenvironment on protein and gene expression, MDPC23 cells (mouse dental papilla cell line) and KUSA/A1 cells (bone marrow stromal cell line) were used, both in vitro cell culture and in intra-abdominal diffusion chambers implanted in 4-week-old male immunodefficient mice (SCID mice). Our results indicate that KUSA/A1 cells differentiated into osteoblast-like cells and induced bone tissue inside the chamber, whereas, MDPC-23 showed odontoblast-like characteristics but with a low ability to induce dentin formation. This study shows that MDPC-23 cells are especial cells, which possess morphological and functional characteristics of odontoblast-like cells expressing dentin sialophosphoprotein in vivo. In contrast, dentin sialophosphoprotein gene and protein expression was not detected in both cell lines in vitro. The intra-abdominal diffusion chamber appears as an interesting experimental model for studying phenotypic expression of dental pulp cells in vivo. 相似文献
7.
Study on Improving Precision of Analysis of Boost Ratio and Power Efficiency of Tapped‐Inductor DC–DC Converter Circuit
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Analysis precision of boost ratio and power efficiency in boost DC–DC converter circuit is improved by proposing adaptive equivalent circuit of output diode of the circuit. In experiment, boost ratio and power efficiency in high boost ratio circuit were 9.89% and 76.5% respectively with its load resistance of 20 Ω driven by output voltage 10 V. In experimental results, error in theoretical values of boost ratio compared with the measured values of that was reduced to ?3.79% from 57.5% in the conventional circuit. In a tapped‐inductor high boost ratio circuit, error in theoretical values of boost ratio was reduced to 3.54% from 31.8%. Error in theoretical values of power efficiency with the measured values of that was reduced to 5.51% from 33.2% in the conventional circuit. In a high boost ratio circuit, error in theoretical values of power efficiency was reduced to ?3.32% from 17.3%. Power loss of every element in boost DC–DC converter circuits was analyzed with high precision by analysis of inductance current waveforms in those circuits. Error in theoretical values of power loss compared with measured values was reduced to equal or less than 5%. 相似文献
8.
利用同步辐射光电子能谱原位研究了经氧离子溅射后SUS304不锈钢和纯金属铁、镍、铬表面氧的化学状态.氧离子溅射后,SUS304不锈钢表面的氧全部以化合态形式存在;而在纯铁、镍、铬金属表面.只有部分氧与金属元素化合,另一部分氧以原子的形式镶嵌在金属晶格中纯金属元素与氧的化学反应活性决定了金属中化合氧和溶解氧的比率. 相似文献
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Factors affecting heat-induced gel formation of bovine serum albumin (BSA) were studied. In the presence of NaCl (I>0.05), well-developed transparent gels formed on both sides of the isoelectric point (Ip). Addition of CaCl2 or MgCl2 greatly suppressed gel formation on the alkaline side of Ip, but increased it a little on the acid side. Intermolecular s-s bonds contributed to the gel formation on the alkaline side of Ip but not on the acid side. From the results of the infrared spectra measurements intermolecular β-structure appears to contribute to gel formation on both sides of the Ip. 相似文献