National Repository of Grey Literature 7 records found  Search took 0.01 seconds. 
Monopolistický zprostředkovaný trh
Ostatnický, Michal
In this paper a dealers´ market with a monopolistic market maker is analyzed. This analysis helps to indicate whether the dealers´ market of a particular stock may exist, and if there is at least one firm that wants to make the market.
The first experience with a low voltage electron microscope
Nebesářová, Jana
The low voltage electron microscope LV EM 5 manufactured by Delong Instruments is described and methods of preparation of biological specimens for the observation in this microscope are briefly evaluated. LV EM 5 is a unique apparatus that could replace in medical and biological research laboratories high volatage transmission electron microscopes.
Observation of biological material in low voltage transmission electron microscope
Vancová, Marie ; Nebesářová, Jana
Different methods of specimen preparation for low voltage transmission electron microscopy (LVEM) were evaluated. The contrast of the image in LVEM, contrary to high voltage TEM, is strongly influenced by the thickness of the specimen. The resin embedding media used and the process of sectioning employed contributed to image quality and resolution.
Comparison of the cell structure of tissues prepared by different methods for transmission electron microscopy
Vancová, Marie ; Nebesářová, Jana
The aim of this work is to show how methods which are able to retain antigenicity of tissues can influence the structural appearance of the specimen. We compared the ultrastructure of tissues conventionally embedded in hydrophobic epoxides, with tissues embedded in hydrophilic acrylic resins (polymerized by heat or UV light) and cryo-sections.
The first experience with the specimen preparation for low-voltage transmission electron microscope
Nebesářová, Jana ; Vancová, Marie
The low-voltage transmission electron microscope, working in the TEM mode, requires ultrathin sections with a thickness 20-30nm. This demand brings problems with a section cohesion caused by insufficient resin infiltration and with a chatter caused by unequal thickness of the section. The contrast of unstained biological specimens in LV TEM is comparable with the contrast obtained in HV TEM of stained specimens.
Electron microscopical study of embryonic envelopes in the tapeworm Proteocephalus torulosus (Cestoda: Proteocephalidea)
Bruňanská, Magdaléna ; Nebesářová, Jana ; Scholz, Tomáš
The ultrastructure of the embryonic envelopes of the cestode Proteocephalus torulosus (Batsch, 1786), a parasite of cyprinid fish, was examined by transmission electron microscopy.
Study of biodiversity and account of haematophagous dipterous insects, mainly mosquitoes, in PLA Palava and Litovelské Pomoraví
Gelbič, Ivan ; Minář, Jan ; Olejníček, Jiří
Changes in the biodiversity of haematophagous insects, mainly mosquitoes and effect of artificial flood on the account of mosquitoes were studied in PLA Palava. Global changes of temperature on the biodiversity of mosquitoes in PLA Palava and Litovelské Pomoraví were studied too.

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