The Identification Problem of Letterbox Transport Companies in the Slovak Republic

2019 ◽  
Vol 7 (1) ◽  
pp. 46-50
Author(s):  
Miloš Poliak ◽  
◽  
Jana Tomicová ◽  
Patrícia Šimurková ◽  
Marek Jaśkiewicz
Keyword(s):  
Slovak Republic ◽  
Identification Problem ◽  
Current Situation ◽  
Unfair Competition ◽  
Subsequent Determination ◽  
Social Contributions

The letterbox companies are a major concern of many interested parties because they can create unfair competition and potentially undermine legitimate businesses by avoiding costs other than social contributions and taxes. Therefore, to ensure that carriers are equal and eliminate unfair competition, the need to improve the checking of letterbox transport companies is essential. The paper deals with the issue of more effective provision of inspections of letterbox transport companies within the Slovak Republic. Based on the analysis of the current situation in the Slovak Republic and based on the research carried out in relation to the existence of letterbox transport companies, the paper deals with the proposals related to their prevention and subsequent determination of the procedure for their checking.

Sorption of Se (IV) from aqueous solutions with subsequent determination by X-ray fluorescence analysis

2020 ◽  
Vol 86 (10) ◽  
pp. 5-9
Author(s):  
D. G. Filatova ◽  
A. A. Arkhipenko ◽  
M. A. Statkus ◽  
V. V. Es’kina ◽  
V. B. Baranovskaya ◽  
...  
Keyword(s):  
Inductively Coupled Plasma ◽  
Fluorescence Analysis ◽  
Standard Samples ◽  
Phase Contact Time ◽  
Sorbent Phase ◽  
X Ray ◽  
Fundamental Parameters ◽  
Inductively Coupled ◽  
Subsequent Determination

An approach to sorptive separation of Se (IV) from solutions on a novel S,N-containing sorbent with subsequent determination of the analyte in the sorbent phase by micro-x-ray fluorescence method is presented. The sorbent copolymethylenesulfide-N-alkyl-methylenamine (CMA) was synthesized using «snake in the cage» procedure and proven to be stable in acid solutions. Conditions for quantitative extraction of Se (IV) were determined: sorption in 5 M HCl or 0.05 M HNO3 solutions when heated to 60°C, phase contact time being 1 h. The residual selenium content in the solution was determined by inductively coupled plasma mass spectrometry (ICP-MS) using 82Se isotope. The absence of selenium losses is proved and the mechanism of sorption interaction under specified conditions is proposed. The method of micro-x-ray fluorescence analysis (micro-RFA) with mapping revealed a uniform distribution of selenium on the sorbent surface. The possibility of determining selenium in the sorbent phase by micro-RFA is shown. When comparing the obtained results with the results of calculations by the method of fundamental parameters, it is shown the necessity of using standard samples of sorbates to obtain correct results of RFA determination of selenium in the sorbent phase.

scholarly journals Indirect spectrophotometric determination of gentamicin and vancomycin antibiotics based on their oxidation by potassium permanganate

2006 ◽  
Vol 4 (4) ◽  
pp. 708-722 ◽  
Author(s):  
Akram El-Didamony ◽  
Alaa Amin ◽  
Ahmed Ghoneim ◽  
Ayman Telebany
Keyword(s):  
Acid Medium ◽  
Potassium Permanganate ◽  
Pharmaceutical Formulations ◽  
Molar Absorptivity ◽  
Reaction Conditions ◽  
Subsequent Determination ◽  
Optimum Reaction ◽  
Acid Orange Ii ◽  
Sulphuric Acid Medium

AbstractFour simple, accurate, sensitive and economical procedures (A–D) for the estimation of gentamicin sulphate and vancomycin hydrochloride, both in pure form and in pharmaceutical formulations have been developed. The methods are based on the oxidation of the studied drugs by a known excess of potassium permanganate in sulphuric acid medium and subsequent determination of unreacted oxidant by reacting it with amaranth dye (method A), acid orange II (method B), indigocarmine (method C) and methylene blue (method D), in the same acid medium at a suitable λmax=521, 485, 610 and 664 nm, respectively. The reacted oxidant corresponds to the drug content. Regression analysis of Beer-Lambert plots showed good correlations in the concentration ranges 4–8, 3–8, 4–9 and 5–9 µg ml−1 with gentamicin and 4–8, 1.5–4, 1.5–4 and 3.5–5.5 µg ml−1 with vancomycin for methods A, B, C, and D, respectively. The molar absorptivity, sandell sensitivity, detection and quantification limits were calculated. The stoichiometric ratios for the cited drugs were studied. The optimum reaction conditions and other analytical parameters were evaluated. The influence of the substance commonly employed as excipients with these drugs were studied. The proposed methods were applied to the determination of these drugs in pharmaceutical formulations. The results have demonstrated that the methods are equally accurate and reproducible as the official methods.

scholarly journals Alkaline Solubilization Method Applied to Industrialized Bread Samples For Subsequent Determination of Cu, Fe, K, Mg, Na and Zn by Atomic Spectrometry

2020 ◽  
Vol 12 (2) ◽  
pp. 368-377
Author(s):  
Ana Claudia Beduhn Luckow ◽  
Daisa Hakbart Bonemann ◽  
Camila Corrêa Pereira ◽  
Alexander Ossanes de Souza ◽  
Anderson Schwingel Ribeiro ◽  
...  
Keyword(s):  
Atomic Spectrometry ◽  
Subsequent Determination

scholarly journals Offshore Operating Agreements

1973 ◽  
Vol 11 (3) ◽  
pp. 503
Author(s):  
D. A. MacWilliam ◽  
R. C. Muir
Keyword(s):  
Advantages And Disadvantages ◽  
New Concepts ◽  
Subsequent Determination ◽  
Canadian Company ◽  
Offshore Operations

The following article analyzes the offshore joint operating agreement in detail. Inter alia, the possible corporate forms Canadian company could use, and their respective advantages and disadvantages, are discussed. The authors consider the new concepts and different provisions and procedures that are necessary to deal with the special problems of offshore operations. Operatorship, with its corresponding rights and obligations, is discussed with emphasis on whether or not challenge clause should be included in the agreement. Independent operations, and the subsequent determination of penalties, are reviewed. The authors discuss problems involved with dis position of production, and in particular, the overlift-underlift clause. Other topics examined are offshore lease selection, sharing of platform costs, and arbitration clauses.

scholarly journals Marketingovo strategické riadenie verejných vysokých škôl

2020 ◽  
pp. 129-134
Author(s):  
Martin Halmo
Keyword(s):  
Higher Education ◽  
Strategic Management ◽  
Slovak Republic ◽  
Higher Education Institutions ◽  
Current Situation ◽  
Public Higher Education ◽  
Alternative Management ◽  
Higher Education Act ◽  
Education Act ◽  
The University

In the Slovak Republic, on the basis of legislative conditions, the Higher Education Act does not give the possibility to direct the management of public higher education institutions towards the fulfillment of their goals and thus to adapt effectively to the current situation and challenges. This is characterized by processes and structures that are duplicate, problematic or ambivalent, which ultimately prevents public higher education institutions from autonomously receiving and fulfilling their mission. It is therefore important that alternative management trends are introduced into the governance structures to help the development of public higher education institutions. We consider the use of marketing strategic management as such an element. Thus, the use of this type of management can ultimately benefit the university in the form of the required number of pupils. It can also contribute to improving the quality and supply of education, information and information.

Sorption of As (III) and Se (IV) from aqueous solutions for subsequent determination by total reflection X-ray fluorescence

2021 ◽  
Vol 87 (8) ◽  
pp. 19-22
Author(s):  
D. G. Filatova ◽  
A. A. Arkhipenko ◽  
M. A. Statkus ◽  
I. V. Mikheev ◽  
V. B. Baranovskaya ◽  
...  
Keyword(s):  
Raw Materials ◽  
Total Reflection ◽  
Phase Contact Time ◽  
Sorbent Phase ◽  
X Ray ◽  
Icp Ms ◽  
Subsequent Determination ◽  
Processed Products ◽  
Branched Structure

An approach to the simultaneous isolation of As (III) and Se (IV) from solutions on a new S,N-containing sorbent followed by determination of the analyte in the sorbent phase using total reflection X-ray fluorescence (TXRF) has been proposed. To match the goal, a sorbent with a branched structure was synthesized on the base of polyacrylamide modified with formaldehyde and hydrogen sulfide. This is a heteroatomic copolymer containing sulfide bridges in the chain and crosslinking by a tertiary amine. Conditions for the quantitative co-extraction of As (III) and Se (IV), i.e., sorption in solutions of 1 M HNO3 with calcium ions present, heating to 60°C and phase contact time of 1 h were determined. The mechanism of sorption interaction of the analytes under specified conditions is discussed. It is shown that a 100-fold excess of iron, zinc and copper does not interfere with the extraction of analytes, thus providing the possibility of As (III) and Se (IV) isolation from different types of raw materials and processed products using the synthesized sorbent. A method for the direct XRF quantification of arsenic and selenium with sr 0.09 and 0.08, respectively, in the sorbent phase has been developed. The correctness of the results was confirmed by the ICP-MS method in analysis of aqueous reference solution after dissolution of the sorbate in HNO3 (1:1).

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