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排序方式: 共有2744条查询结果,搜索用时 15 毫秒
941.
Marco Antonio P. Queirol Joo Tessarioli Neto Valter Arthur Frederico M. Wiendl Anna Lucia C. H. Villavicencio 《Radiation Physics and Chemistry》2002,63(3-6):341-343
After irradiating with a single dose of 50 Gy, ginger rhizomes were dipped into paraffin for coating, wrapped in a plastic film of low-density polyethylene, on perforated or non-perforated polivinyl chloride film, and compared with non-wrapping and non-irradiation as the controls. After treatments the rhizomes were maintained refrigerated at 13°C and 80% relative humidity. As a main result it could be observed that dipping into paraffin and wrapping with plastics resulted in smaller weight loss of the rhizomes. 相似文献
942.
943.
Dielectric relaxation measurements in the frequency range from 2 Hz to 100 kHz have been carried out on an oriented binary nematic mixture of low molecular liquid crystals with a glass temperature of 307 K. For both relaxation frequencies, fR‖ and fR⊥, a glass behaviour according to the Vogel-Fulcher law could be detected. The Cole-Cole distribution parameter for reorientation around the long molecular axis increases strongly with decreasing temperature. This effect is discussed with regard to the optical biaxiality of the mixture. 相似文献
944.
The concepts of complementarity and entanglement are considered with respect to their significance in and beyond physics. A formally generalized, weak version of quantum theory, more general than ordinary quantum theory of physical systems, is outlined and tentatively applied to two examples. 相似文献
945.
946.
Lucia Caporaso 《Compositio Mathematica》2002,130(1):1-19
A uniform version of the Shafarevich Conjecture for function fields (Theorem of Parshin–Arakelov) is proved, together with a uniform version of the geometric Mordell conjecture (Theorem of Manin). Such results are generalized to base varieties of arbitrary dimension (i.e. function fields of arbitrary transcendence degree). 相似文献
947.
Maria Angelica Caponetto Lucia Merlante 《Rendiconti del Circolo Matematico di Palermo》1980,29(1):42-48
We propose an axiomatic theory about this work based upon an original way intending the belonging idea. We think it would be necessary to distinguish among several uses of the word belonging, till now expressed by Peano's symbol. This theory is called “The theory of classes however the large ones» because we think that it comes up to the necessity don't to restrict the size of classes which are expressible by a foundational theory. It is a first order theory, showed by eight axioms; it alphabet includes a lot of infinitely simbols of belonging, one for each level, distinguished one from each other. We think that introducing a lot of symbols we can avoid the classical antinomies and we can extend the Von Neumann's process till we need. The last one restricted to distinguish between the sets and the proper classes. For us this becomes the distinction between the first and the second level. In fact this theory develops the main idea of N.B.C.'s according to which a proper class never belongs to some other class. According to our opinion a class can belong to a larger one because it is a different belonging from the belonging that exists between a set and a proper class. 相似文献
948.
F. J. Hartmann R. Bergmann H. Daniel T. von Egidy G. Fottner R. A. Naumann J. J. Reidy W. Wilhelm 《Zeitschrift für Physik A Hadrons and Nuclei》1982,308(2):103-105
Muonic Coulomb capture ratios for 35 fluorides and 13 sulfides have been measured at SIN, Switzerland. We observed a periodic variation with the atomic numberZ of the cation. This is in agreement with recent theoretical calculations. 相似文献
949.
950.
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