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. Cardiovasc. Revasc. Med. 10 , 49 – 54 ( 2009 ) 17. Ungi T , Zimmermann Z , Balázs E , Lassó A , Ungi I , Forster T , Palkó A , Nemes A : Vessel masking improves densitometric myocardial perfusion assessment . Int. J. Cardiovasc

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, tradicijata i zabavlenieto (antropolodzki pogled) 2007 Mirchevska , P. M. 2008: Ritual with masks in Republic of Macedonia. In: The Ritual Year and History . Paper presented at the 3rd International Conference of

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Abstract  

The distribution of a radioactively labelled substance was measured in two different solvent extraction systems in the presence of substoichiometric amounts of different masking reagents. The theory of the errors involved in the method is elaborated, recommendations are given for the choice of the conditions of the determination, e.g. which combination of extractant and masking reagent is preferable, which of the two elements should be labelled, what is the optimum concentration of the masking reagent and what values of distribution ratios are desirable.

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Abstract  

The extraction of group IB, IIB and IIA-VA elements with 1-phenyl-3-methyl-4-trifluoroacetyl-pyrazolone-5 in chloroform has been investigated as a function of pH. The stripping of metal ions into solutions of KCN, HClO4 and appropriate pH buffers has been studied. The masking effects of cyanide, citrate, iodide, thiosulphate and thiourea on the extraction have been examined. Selective group and individual separations have been proposed on the basis of pH control, masking effects and back-extraction.

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Orvosi Hetilap
Authors: Viktor Sasi, Anita Kalapos, Henriette Gavallér, Péter Domsik, Tamás Ungi, Zsolt Zimmermann, Ferenc Tamás Nagy, Tamás Horváth, Tamás Forster, and Attila Nemes

Ungi, T., Zimmermann, Z., Balázs, E., et al.: Vessel masking improves densitometric myocardial perfusion assessment. Int. J. Cardiovasc. Imaging, 2009, 25 , 229–236. Balázs E

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Abstract  

The method of differential spectrophotometry with the use of Arsenazo III for uranium determination with masking Zr and Pu by 1,2-diaminecyclohexanetetraacetic acid in acetate buffer and carboxyarsenazo for determination of plutonium without its separation from uranium is applied for analysis of the spent fuel of VVER type reactors.

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Abstract  

The separation of Zn−Cd, Ag−Hg, Cd−Ag and Pb−Bi−Po by extraction chromatography in the system dithizone-carbon tetrachloride is reported. It is shown that it is possible to calculate optimum conditions for the separation of the metals from the extraction constants of the metal chelates and the stability constants of the metal complexes with masking agents.

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Abstract  

The extraction behaviour is reported of zinc(II), cadmium(II) and mercury(II) complexes of thiocarbohydrazide in benzene, chloroform, carbon tetrachloride, di-isopropyl ether, ethyl acetate, amyl acetate, and amyl alcohol. The separation of the three elements has been achieved by the use of various masking agents, as well as by making use of the effect ofpH on their extractability.

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The use of the theatrical in music is an important way in which György Kurtág reminds us of the music's ontological status as deferred presence, and marks an ever-growing awareness of this status on the part of the composer himself. It must be recognised that the performers in Kurtág's theatre of music are themselveses part of the process of signification. Thus the music informs us that it is not itself fully present: its presence is, in the deconstructionists' sense, 'deferred'. This is a different situation from normal music theatre. The realisation that a truly original - and therefore fully self-present - music is impossible, therefore, gives Kurtág the ability to adopt a number of masks with varying degrees of irony, even to the extent of adopting the mask of the dramatic orchestral tutti.

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Abstract  

The extraction-chromatographic behaviour of zinc on a column with dithizone as chelating agent has been investigated in the absence and presence of oxalic acid as masking agent. From the results the extraction constant and the stability constants of zinc oxalate complexes have been determined. These values are in good agreement with the published data so that it seems possible to predict the extraction-chromatographic separation of various metals from known extraction and stability constants.

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