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991.
I A Pelishenko V B Letski? A M Dediurin A N Galushkin E I Tikhonova 《Eksperimental?nai?a onkologii?a》1988,10(2):34-37
The simple method of polarographical testing of the peripheral blood serum is recommended as a part of the complex cancer diagnosis for the evaluation of the effectivity of cancer treatment and for the mass preventive examination. This method modified by I. A. Pelishenko (POISK-test) has permitted detecting a protein substance in the serum of cancer patients as well as in the serum both of the rats bearing Pliss sarcoma and in the serum of the irradiated dogs. It was proved that this protein indicates the presence of malignancy and represents polarographically active fraction of the alpha 1-unstable glycoprotein. This substance was designated as "Informative Pelishenko Protein" (IPP), and may be revealed by the polarographic indicator (IPM-01) made in Leningrad. 相似文献
992.
The optical recording of the conditions at the tips of dynamically moving cracks is often associated with a wave pattern which arises from what we call here radial waves. This observation is prevalent for tough solids, especially when the observation tools involve surface deformations such as the caustic method. These waves can modify the caustic shape and size and thus influence the interpretation of measurements. The quantification of the sources of these waves poses a very difficult problem so that a precise evaluation of that phenomenon is not yet possible. However, in an attempt to better understand the limitation imposed on the method of caustics by this set of waves this paper analyzes primarily the change of shape in the caustic associated with the passage of radial waves over the region of the initial curve of the caustic. The analysis is approximate in that the radial waves are assumed to be insensitive to the presence of the crack surfaces, but otherwise accounts for the three dimensional character of wave propagation in a plate of finite thickness.
Résumé On associe souvent l'enregistrement optique des conditions présentes à l'extrémité de fissures en cours de propagation spectaculaire, à une disposition ondulée, due à ce que l'on dénomme ici des ondes radiales. L'observation vaut surtout pour les corps à haute ténacité, et en particulier lorsque les méthodes d'observation tiennent compte des déformations de surface, comme la méthode des caustiques. Les ondes radiales peuvent altérer la forme et la dimension d'une caustique, et, de ce fait, influencer l'interprétation des mesures. Une évaluation précise de ce phénomène n'est pas encore possible, car la quantification des sources de ces ondes pose un problème trés délicat. Néanmoins, en vue de mieux comprendre les limites qu'impose à la méthode des caustiques la formation de ces ondes, on a analysé essentiellement le changement de forme de la caustique lorsque se développent des ondes radiales sur la région couverte par la courbe originale de la caustique. On procède à une approximation dans la mesure où on suppose que les ondes radiales sont insensibles à la présence des surfaces de la fissure, mais prennent par ailleurs en considération le caractère tridimensionnel de la propagation d'une fissure dans une plaque d'épaisseur finie.相似文献
993.
R. G. Zoeller N. G. Ugras K. D. Möller 《Journal of Infrared, Millimeter and Terahertz Waves》1988,9(5):497-504
A Fourier Transform Spectrometer using a 250 Watt Mercury lamp, a lamellar grating and a pumped He-cooled detector is applied to the millimeter wave spectral region. The pure rotation spectrum of CH2F, the transmission of graphite particles in a cloud chamber, the interference on round copper dots and the absorption of iron whiskers have been observed. 相似文献
994.
Technology of constructing blast-filled dams and geotechnical properties of soils of such structures
G. I. Pokrovskii N. P. Lushnov 《Power Technology and Engineering (formerly Hydrotechnical Construction)》1992,26(7):395-400
1. | The use of collapse blasting for constructing rock dams substantially increases the technical and economic indices of the blasting technology of constructing earth dams. |
2. | The selection of the technology of constructing blast-filled dams is determined mainly by the engineering-geological conditions at the construction site. At present it cannot be confirmed whether the use of loosening blasting promotes an increase of the geological properties of soils forming the body of blast-filled dams. |
3. | Further investigations of the process of movement of blasted rock down a mountain slope with determination of the volume of moving rock, time, andvelocity (acceleration) for a known degree of slope roughness are required for a more complete comparison of the effectiveness of the two existing technologies of constructing dams by directional blasting. Such investigations also enable determining the possibility of using the Amontons-Coulomb law of friction for describing the movement of large earth masses. |
995.
V. N. Zhivoderov 《Power Technology and Engineering (formerly Hydrotechnical Construction)》1992,26(6):337-345
1. | An analysis of the results of a unique on-site experiment at the Sayano-Shushenskoe dam on regrouting the sites of column and radial joints under practically equal conditions was carried out for the first time in our country. Information about analogous works could not be found in the foreign literature. |
2. | The works performed indicate the effectiveness and high performance of the multiple grout outlets designed by Gidrospetsstroi. |
3. | Having equal conditions of grouting sites of column and section joints under conditions of the upper pool head (H=60 m), we can say the following: |
996.
A. F. Dmitriev A. I. Tyshenko N. N. Khlapuk 《Power Technology and Engineering (formerly Hydrotechnical Construction)》1992,26(5):306-310
1. | It is necessary to correlate the value of the noneroding velocity with the time of flood passage. If canals are planned in regions where comparatively brief summer floods are dominant, the value of the noneroding velocity should be taken equal to 3 m/sec since by the start of the flood the grass cover will have time to develop and reach maximum strength. If the canals are to be constructed in regions where spring floods are dominant, for example, in the northwestern regions of the country, then the noneroding velocity should be taken equal to 1.5 m/sec, since by the start of the flood the grass carpet does not have time to develop and become stronger. |
2. | In the absence of a constant runoff in the canal, for example, drainage canals, it is necessary to revet the bottom and side slopes with grass carpets. |
3. | In the presence of a constant moistening is made from traditional materials, in the zone of alternate moistening and above it, it is necessary to revet the slopes within reinforced grass carpet. |
4. | In a hydraulic calculation of canals with revetment of the bottom and side slopes with grass carpet, it is necessary to determine the roughness coefficient from the graph of n=f(VR, i). In a hydraulic calculation of wide overgrown channels and in calculation of the movement of the flow over floodplain stretches of rivers free from shrubs and trees, it is necessary to determine the roughness coefficient from the graph of n=f(Vh, i). |
5. | Calculation of canals with nonuniform roughness (rigid revetment and revetment by grass carpets) must be carried out on the basis of relations of uniform flow by means of a generalized roughness coefficient. |
998.
L M Iakushina Iu P Arkhapchev S I Ale?nik N V Blazheevich V A Isaeva I A Alekseeva E Iu Glinka N L Grishchenko L S Evert E I Prakhin 《Voprosy pitaniia》1992,(3):59-62
The effect of the prophylactic use of multivitamin "Undevitum" on parameters of vitamin providing of schoolchildren in Norilsk was studied. The results of the investigation showed a positive effect of the prophylactic vitamin administration on providing with vitamins of schoolchildren in Norilsk and proved the necessity of conducting mass vitamin administration to schoolchildren. 相似文献
999.
本文介绍一种利用原水中含有的无机盐,加入廉价的化学试剂除去饮用水中微量铀的简便方法。并对其除铀机理进行了探讨,证明除铀主要是以软化水过程中产生的氢氧化镁表面吸附共沉淀机理进行的。 相似文献
1000.
The optical properties of O2
– centres in KClNaCl mixed crystals were investigated. The timeresolved spectra and the fluorescence decay time are shown. From the measurements of the radiative decay time, the oscillator strength of the absorption,f
ab=0.045, the oscillator strength of the fluorescence,f
fluo=0.019, and the activation energy E=0.22 eV for the O2
– centre in KClNaCl were determined. 相似文献