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11.
Subhalf micron (0.2 nm) space and amplitude linear periodic structures and an array of dot images are obtained with the Nd:YAG laser irradiation on Kapton polyimide films, poly(ethylene terephthalate) films, spin-coated polyimide films and others. Different from the excimer laser irradiation, which requires a polarizer, our solid state Nd:YAG laser source provides polarized beams without a polarizer with advantage over excimer laser irradiation. AFM and SEM studies have been carried out. XPS studies of laser exposed areas indicate no significant chemical reactions took place on exposed areas. 相似文献
12.
R. G. Grebenshchikov V. F. Popova A. K. Shirvinskaya 《Glass Physics and Chemistry》2003,29(5):479-483
The phase equilibria in the LnAlO3–CaTiO3 (Ln = Dy, Y, Lu) systems are investigated and their phase diagrams are constructed for the first time. The thermal stability of the prepared solid solutions with a perovskite structure is studied. 相似文献
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14.
V. Z. Kutsova N. V. Popova A. G. Krimmel T. P. Chaikovskaya 《Metal Science and Heat Treatment》1992,34(11):704-707
Dnepropetrovsk Metallurgical Institute. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 11, pp. 31–33, November, 1992. 相似文献
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K Ivanov M Popova P Denev C Kratchanov 《Zeitschrift für Lebensmittel-Untersuchung und -Forschung》1992,195(5):455-458
Laboratory experiments have been carried out for the removal of heavy metals from hydrogenated vegetable oils using hydrated polyuronides (degree of swelling from 4 to 12.8 ml/g) such as alginic acid, pectic and pectinic acids. The effect of the type of polyuronide, degree of esterification and oil treatment on the degree of demetalization has been studied. It has been shown that with increase in the degree of esterification of the polyuronide the efficiency of demetalization decreases. The second and third treatment of the hydrogenated oil with pectinic acid resulted in a high degree of heavy metal removal. The possibility of efficient demetalization of hydrogenated oils by treatment with water solutions of pectinic acids has also been demonstrated. The degree of metal ion removal increases with decreasing concentration of pectinic acids in the water solution. 相似文献
17.
In order to determine the differences in histological grade of activity and the stage of fibrosis in patients with chronic liver diseases due to multiple hepatitis virus infection and single infection of HBV and HCV we assessed the 68 liver biopsies samples according to Knodell and Scheuer scoring systems. Retrospectively, 216 liver biopsies reports from consecutive patients with chronic viral hepatitis were analysed. Histological activity index (HAI) in HBV/HCV coinfection was higher than in a single HCV infection; it did not differ in groups of HBV/HBC and HBV. The difference was due to the interface hepatitis; lobular activity and portal inflammation were the same. In HDV superinfection HAI was high due to both portal-periportal and lobular hepatitis. HAI depended mainly upon the presence of HBV replication; in patients with chronic hepatitis C with HBV-DNA HAI was also higher than in single HCV group. No difference in HAI between triple and dual hepatitis virus infection was found. In patients with HBV/HCV coinfection and especially with HDV superinfection the advanced stages occurred more than often than in patients with single infections. 相似文献
18.
A. A. Nikitin O. V. Zausova N. V. Titova A. B. Shapovalov E. B. Vlasova L. A. Popova 《Glass and Ceramics》2007,64(9-10):373-374
The possibility of using the granulated form of biocompatible material made of calcium-phosphate glass ceramic BGC for treatment of maxillary cysts was demonstrated. 相似文献
19.
1. | Increasing the concentration of manganese to 1.0% in steel 10KhSND increases the ultimate strength without changing the yield point. |
2. | An increase in the ultimate strength and the yield point while maintaining the same levels of ductility can be achieved by adding 0.03–0.07% Ti to steel 10KhSND. In order to increase the strength of steel 10KhSND in the hot-rolled condition, we recommend the addition of Ti in amounts close to the maximum allowable according to State Standard 19282-73 (0.03%). |
3. | The increased strength of steel 10KhSND containing increased amounts of Ti of 0.025–0.030% occurs as a result of decreased grain boundary elongation and a decreased tendency toward grain growth. |
20.
Magossi Maiara S. Maraldi Vitor A. Magossi Mariana S. DA Costa Fabíola M. Alves Kamilla Franco Fernanda D. S. DO Carmo Devaney R. 《SILICON》2021,13(7):2243-2255
Silicon - This study describes the preparation and characterization of 3-chloropropyl silica gel with 4-amino-5-(4pyridyl)-4H-1,2,4-triazole-3-thiol (SGA) for copper adsorption in different media.... 相似文献