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1.
The authors present a rare clinical case of a woman who developed Gerstmann's syndrome following an acute Herpes simplex viral encephalitis. Clinical observation and laboratory evaluation were performed during the acute phase of the disease. After that the follow-up continued for one-year period. The localization of the pathologic process was determined by computerized tomography, conducted periodically. The characteristics of the clinical picture are interpreted in the context of the contemporary concepts of the topical diagnosis of Gerstmann's syndrome. The possibility of a sudden onset of acute Herpes simplex viral encephalitis without a preceding febrile-intoxication syndrome is worth noting. Conclusions are drawn stressing the need of an early etiologic treatment and the importance of the rehabilitation activities during the convalescence period. 相似文献
2.
Atanas Radenski 《Software - Concepts & Tools》1998,19(3):122-129
This paper proposes a code reuse mechanism called module embedding that enables the building of new modules from existing ones through inheritance, overriding of procedures, and overriding of types; the paper also describes an implementation scheme for this mechanism. Module embedding is beneficial when modules and classes are used in combination and need to be extended together, or when modules are a more appropriate medium than classes. 相似文献
3.
L. I. Urbanovich V. A. Goryainov V. V. Sevost'yanov Yu. G. Boev V. M. Niskovskikh A. V. Grachev A. V. Sevost'yanov V. S. Gur'ev 《Journal of Engineering Physics and Thermophysics》1980,39(2):900-905
A method is described and certain results presented of an experimental study of local heat exchange in the forced cooling of metal surfaces heated to high temperatures.Notation
l
distance from nozzle to heated surface
- x, y
horizontal and vertical coordinates in the field of the jet, read from the geometric center of the jet
- V
volumetric flow rate of water through the nozzle
- p
excess pressure of the water in front of the jet
- F0
area of sprayed surface of specimen
- Fc
area of unsprayed surface of working part of specimen
- t
temperature of sprayed surface of specimen
- tw
temperature of the water entering the nozzle
- N, Nc
power required to heat the working part of the specimen to a given temperature with and without the spraying of water onto the surface, respectively
- g
local spraying density
-
local heat-transfer coefficient
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 39, No. 2, pp. 315–322, August, 1980. 相似文献
4.
Peter Boev 《History of Photography》2013,37(2):155-172
Abstract In a brief span of only 135 years, photography has been turned from a purely technical invention into a symbol of our time, and this itself constitutes one of the most remarkable phenomena of modern civilization. The illustration has become the full-fledged partner of literature, and photography a basic means of acquiring and recording knowledge. Photography has become a tool of science, and a means of the aesthetic exploration of reality. It spread rapidly all over the world; but its appearance in Bulgaria was greatly delayed because the Bulgarian people were still under Ottoman domination and some 39 years since its invention had passed before liberation finally came. 相似文献
5.
Dimitar L. Lyutov Kaloyan V. Genkov Anton D. Zyapkov Gichka G. Tsutsumanova Atanas N. Tzonev Lyudmil G. Lyutov Stoyan C. Russev 《Materials Chemistry and Physics》2014
We report a simple one-step synthesis method of large single crystalline Ag (111) hexagonal microplates with sharp edges and a size of up to tens of microns. Single silver crystals were produced by reduction silver nitrate aqueous solution with 4-(methylamino)phenol sulfate. Scanning and transmission electron microscopy, energy-dispersive X-ray spectroscopy, selected area electron diffraction and optical microscopy techniques were combined to characterize the crystals. It is shown that the microplates can be easily dispersed and transferred as single objects onto different substrates and subsequently used as a high quality plasmonic starting material for micromachining of future nanocomponents, using modern top-down techniques like focused-ion beam milling and gas injection deposition. 相似文献
6.
Sequestration of Host Plant Glucosinolates in the Defensive Hemolymph of the Sawfly Athalia rosae 总被引:1,自引:1,他引:0
Caroline Müller Niels Agerbirk Carl Erik Olsen Jean-Luc Boevé Urs Schaffner Paul M. Brakefield 《Journal of chemical ecology》2001,27(12):2505-2516
Interactions between insects and glucosinolate-containing plant species have been investigated for a long time. Although the glucosinolate–myrosinase system is believed to act as a defense mechanism against generalist herbivores and fungi, several specialist insects use these secondary metabolites for host plant finding and acceptance and can handle them physiologically. However, sequestration of glucosinolates in specialist herbivores has been less well studied. Larvae of the turnip sawfly Athalia rosae feed on several glucosinolate-containing plant species. When larvae are disturbed by antagonists, they release one or more small droplets of hemolymph from their integument. This reflex bleeding is used as a defense mechanism. Specific glucosinolate analysis, by conversion to desulfoglucosinolates and analysis of these by high-performance liquid chromatography coupled to diode array UV spectroscopy and mass spectrometry, revealed that larvae incorporate and concentrate the plant's characteristic glucosinolates from their hosts. Extracts of larvae that were reared on Sinapis alba contained sinalbin, even when the larvae were first starved for 22 hr and, thus, had empty guts. Hemolymph was analyzed from larvae that were reared on either S. alba, Brassica nigra, or Barbarea stricta. Leaves were analyzed from the same plants the larvae had fed on. Sinalbin (from S. alba), sinigrin (B. nigra), or glucobarbarin and glucobrassicin (B. stricta) were present in leaves in concentrations less than 1 mol/g fresh weight, while the same glucosinolates could be detected in the larvae's hemolymph in concentrations between 10 and 31 mol/g fresh weight, except that glucobrassicin was present only as a trace. In larval feces, only trace amounts of glucosinolates (sinalbin and sinigrin) could be detected. The glucosinolates were likewise found in freshly emerged adults, showing that the sequestered phytochemicals were transferred through the pupal stage. 相似文献
7.
Chronic action of different xenobiotics which form a part of condensed hydrogen sulphide-containing gas causes substantial changes in the activity of xenobiotic metabolic enzymes, which is suggestive of the damaged hepatic microsomal monooxygenase system. As the rate of biotransformation becomes higher, there are increases in the activity of microsomal monooxygenases and in the generation of active oxygen forms and hydrogen peroxide, by impairing antiradical and antiperoxide mechanisms. The experimentally used concentration of substances as constituents of condensed gas corresponds to the maximum acceptable air concentration of in the working area of gas-refining plants, but the functional features of the body's detoxifying system--the hepatic monooxygenase system should be taken into account while developing preventive measures of occupational diseases. 相似文献
8.
9.
The design of an atmospheric film-type sprayer, which is one of the basic components of cooling towers serving as component parts of the system supplying circulating water for any production process, is described. Promising use of the sprayer design developed for cooling towers in the chemical and petrochemical branches of industry is indicated. 相似文献
10.
Enhancement of DNA vaccine immunogenicity is a current topic of high priority in the field of applied immunology, especially as a means of controlling HIV infection. The adjuvant effect of Ubenimex (UBX), an anti-cancer immunomodulator, on a DNA AIDS vaccine which we developed was examined in a murine model. UBX was formulated into a preparation containing DNA plasmids encoding env and rev genes of HIV-1 strain III(B), and was inoculated intramuscularly into BALB/c mice. The sera obtained with this mixture had 2(3)-2(5) times higher specific IgG titres than those obtained without the use of the adjuvant. UBX also elicited both a stronger HIV-1-specific DTH reaction, as measured by the footpad swelling test, and stronger cytotoxic T lymphocyte activity, as assayed by the 51Cr-release method, compared with responses using DNA alone. The cytokine secretion profile of restimulated immune lymphoid cells showed that UBX raised IL-2 and interferon-gamma levels and decreased IL-4 production. HIV-1-specific immunoglobulin subtype analysis demonstrated that UBX stimulated IgG2a production but suppressed synthesis of IgG1 and IgE. These results indicate that activation of the T-helper type 1 subset was induced by UBX, suggesting a mechanism of immunomodulation mediated by this agent. We conclude that UBX acts as an immunologic adjuvant for DNA vaccination against HIV-1. UBX may be a suitable adjuvant for clinical use because of its lack of antigenicity and low toxicity. 相似文献