排序方式: 共有16条查询结果,搜索用时 15 毫秒
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Wilton Pereira da Silva Cleide M. D. P. S. e Silva Jürgen Wolfgang Precker Maria Elita Martins Duarte 《International Journal of Food Science & Technology》2012,47(11):2452-2459
Many times, when an experimental result is communicated, the uncertainty is omitted, particularly in the case in which the parameter of interest is determined by curve fitting. This article presents a review study to include an uncertainty to the parameter of interest, obtained by fitting of a straight line to an experimental data set, supposing that systematic errors can be neglected. This study is applied to the determination of expressions for the thermal conductivity of food products, supposing a constant mean temperature. In this case, in general, the thermal conductivity is a linear function of the moisture content (wb). Expressions of the thermal conductivity were obtained for several foodstuffs, according to the recommendation of the International Organization for Standardization. Thus, for a given moisture content, the obtained expressions enable to determine the value for the thermal conductivity, as well as its uncertainty, for a stipulated confidence limit. 相似文献
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L. N. Britvin V. V. Gaevskii V. A. Germanova R. I. Nigmetzyanov V. M. Prikhod’ko 《Russian Engineering Research》2017,37(12):1087-1089
The combination of thermochemical and ultrasound treatment is considered. A system is proposed for such combined surface-layer treatment of steel and aluminum-alloy manufacturing components. 相似文献
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V. Donchev M. Saraydarov K. Germanova M. Ivanov Xue-Lun Wang Mutsuo Ogura Seong-Jin Kim 《Journal of Materials Science: Materials in Electronics》2003,14(10-12):793-794
The photoconductivity (PC) of undoped GaAs/AlGaAs quantum wires (QWRs) along the wire direction is studied for the first time. The PC spectrum reveals a strong substrate-related background as well as several small structures, some of which could be connected with the QWRs. This suggestion is confirmed by the observed polarization dependence of the PC and by photoluminescence (PL) and photoluminescence excitation (PLE) measurements on a similar sample. Prolonged pre-illumination of the sample with infrared light (hν=1.18 eV) considerably reduces the background in the PC spectrum, and makes the QWR structures better resolved. 相似文献
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Ludmila Lukyanova Elita Germanova Natalya Khmil Lybov Pavlik Irina Mikheeva Maria Shigaeva Galina Mironova 《International journal of molecular sciences》2021,22(16)
This study was the first comprehensive investigation of the dependence of mitochondrial enzyme response (catalytic subunits of mitochondrial complexes (MC) I-V, including NDUFV2, SDHA, Cyt b, COX1 and ATP5A) and mitochondrial ultrastructure in the rat cerebral cortex (CC) on the severity and duration of in vivo hypoxic exposures. The role of individual animal’s resistance to hypoxia was also studied. The respiratory chain (RC) was shown to respond to changes in environmental [O2] as follows: (a) differential reaction of mitochondrial enzymes, which depends on the severity of the hypoxic exposure and which indicates changes in the content and catalytic properties of mitochondrial enzymes, both during acute and multiple exposures; and (b) ultrastructural changes in mitochondria, which reflect various degrees of mitochondrial energization. Within a specific range of reduced O2 concentrations, activation of the MC II is a compensatory response supporting the RC electron transport function. In this process, MC I develops new kinetic properties, and its function recovers in hypoxia by reprograming the RC substrate site. Therefore, the mitochondrial RC performs as an in vivo molecular oxygen sensor. Substantial differences between responses of rats with high and low resistance to hypoxia were determined. 相似文献
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Guizzo Giovani Colanzi Thelma Elita Vergilio Silvia Regina 《Software and Systems Modeling》2019,18(2):1487-1512
Software and Systems Modeling - The design of the product line architecture (PLA) is a difficult activity that can benefit from the application of design patterns and from the use of a search-based... 相似文献