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Analecta technica SzegedinensiaVol. 7. No. 1-2. (2013.)

Tartalom

  • Ottília Bara-Herczegh ,
    József Csanádi ,
    Sándor Barakonyi :

    Rheological characterization of cheeses, especially processed cheeses is very important, because the quality is determined mainly by the texture properties, and the technology and the storage conditions have significant impact on the required texture. Rheological and texture properties are mainly affected by the chemical composition and the type and quantity of the processing conditions. After production the structure is going through of major changes during cooling period and the storage, so a description of knowledge well-defined circumstances, using the parameters may provide useful additional information to the qualification. The structure formation of the final product is also useful feed-back information for the manufacturer.Different type the Sole-Mizo Co. produced processed cheeses (nature and ham flavoured) were investigated by sensory and rheological methods (texture analyses and flow behaviour). The gross composition and the quality according to the sensory test met with the requirements, their quality were located in good and excellent category. The texture of samples was studied by Texture Analyser QTS 25. The nature cheeses were investigated in the total shelf-life according to a programme, the ham flavoured samples only during a shorter period. We determined the hardness value dependence versus shelf-life. The hardness can be a useful parameter in the qualification of cream cheese. The flow behaviour of ham favoured samples was investigated by viscometer at different temperature. The apparent viscosity changed with the temperature. Flow curves showed a same character as the typical non-Newtonian pseudo plastic fluids. It was created a consistency index (as a rheological parameter) and its changes can be associated whit with temperature induced changes in the structure of processed cheeses.

  • István Bíró ,
    József Solticzky ,
    Ferenc Varnyú :

    The Technical Institute of Faculty of Engineering of Szeged University received task to make a stress and construction analysis of a heavy-duty boilers fed by straw bales. Its documentation for manufacturing was purchased as a license from abroad. Main features of the construction and load of boilers are the followings: - Its material: welding constructional steel; - Large sized constructions; - Cornered shape combustion and water chamber put into each other; - The combustion and water chamber are covered by plate steel; - Their stiffness are given by weld beams outside; - Test pressure: 1 bar. Solid Edge finite element method was used by authors to solve the problem. Regarding to the complexity of the construction the walls of the water chamber were analyzed separately. Results obtained by using the program were checked by different model investigations.

  • Zsuzsanna H. Horváth :

    The instrumental colour measurement isn’t used in course of the making and the qualification of the paprika powder, although the colour is the most important sense property of its. Paprika is also used as a natural food colour. The colour of paprika powder is very important too, because the consumer concludes its colouring power based on its colour. The colouring power is determined by quality and quantity of colouring agent of paprika squarely. The colour of the powder is influenced by its particle size, oil content and moisture content and first of all the colour agent content. We investigated how the colour agent content increasing influences the colour characteristics of paprika powders. The L*, a* , b* colour coordinates defined in the CIELab colour space were applied for the colour characterization. The measurements were carried out using a Minolta CR-300 tristimulus colour analyser. We loosed the colour agent from the paprika powder samples using acetone. The colour agent content of obtained samples was less than 10 ASTA units. After different quantity of oleoresin ( 0.0186g, 0.0461g, 0.0626g, 0.0953, 0.3500g, 0.6399g) was added to samples of 10 g of powder. The colour characteristics and colour agent content of these samples were determined. The relation between colour agent content and colour coordinates was analysed using regression analysis and the colour differences Eab were determined between samples with different colour agent content. The results depicted that L* lightness coordinate decreased with increasing colour agent content, the points fitted on a reciprocal function with a significant correlation ( p=0.01). In the case of a* redness coordinate the points fitted on a saturation function (0.01), the redness coordinate didn’t change above 129 ASTA units. The b* yellowness coordinate increased to 97 ASTA units, then decreased, the points fitted on a second degree function with a significant correlation (p=0.01). The function has maximum at 97.17 ASTA units; the maximum value was 25.22 coordinate units. The value of hue angle (oabh) progressively decreased while the colour agent content was added. The *abC chroma increased to 121 ASTA units, then decreased, the points fitted on a second degree function with a significant correlation (p=0.01). It depicts, that the colour of powder became more red and darker as the colour agent content increased. The colour differences Eab calculated between samples with different colour agent content were smaller above 130 ASTA units. It shows that the rate of the change of the paprika powders colour was smaller while the colour agent content increased.

  • Balázs Kotosz :
    Local economic impact of universities22-26en [85.15 kB - PDF]EPA-02592-00004-0040

    The local economic impact of a large tertiary education institution such as a university is an issue which has attracted considerable attention in literature. Beck et al (1995, 246) define economic impact as „the difference between existing economic activity in a region given the presence of the institution and the level that would have been present if the institution did not exist.” Generally, there are three substantial problems. First, the definition of impact, second, measuring and estimating first-round expenditures and avoiding double-counting, third, estimating the correct value of the multiplicator. The economic impact study has become a standard tool used by Western universities to persuade state legislatures of the importance of expenditures on higher education. If this tool is to be used effectively, it must be applied with a methodological rigor that promotes integrity of the process. As economic impact studies become a political tool in the review of education, conservative assumptions and methods should be used to promote objectivity in the research process.

  • Balázs Kotosz :
    Washington, Brussels, and Beijing consensus27-33en [55.99 kB - PDF]EPA-02592-00004-0050

    The local economic impact of a large tertiary education institution such as a university is an issue which has attracted considerable attention in literature. Beck et al (1995, 246) define economic impact as „the difference between existing economic activity in a region given the presence of the institution and the level that would have been present if the institution did not exist.” Generally, there are three substantial problems. First, the definition of impact, second, measuring and estimating first-round expenditures and avoiding double-counting, third, estimating the correct value of the multiplicator. The economic impact study has become a standard tool used by Western universities to persuade state legislatures of the importance of expenditures on higher education. If this tool is to be used effectively, it must be applied with a methodological rigor that promotes integrity of the process. As economic impact studies become a political tool in the review of education, conservative assumptions and methods should be used to promote objectivity in the research process.

  • Éva Pósfai :

    Polycythemia vera (PV), and essential thrombocythemia (ET) patients are characterized by an increased incidence of arterial and venous thromboses. To prevent vascular events is one of the most important challenges in the disease management, as thrombosis could be responsible for the morbidity and mortality in many cases. Since thrombosis can be an early complication of MPNs, an effective antithrombotic strategy has to be started as soon as the disease is diagnosed. Beside the use of appropriate medical therapies and preventive measures against cardiovascular risk factors, a healthy lifestyle may also have importance in MPNs, as it has already been accepted in the general population. However, it has not been accepted yet in the treatment of neoplasms, according to the general notion, thrombosis is "caused" by the disease rather than by the interplay of various factors. The relation between the disease and the thrombotic events is indisputable, though the role of the neoplasm accompanied by other diseases such as diabetes mellitus, cardiovascular diseases, or unhealthy life style, obesity, and smoking should be mentioned as addictive factors in case of myeloproliferative neoplasms thus increasing the susceptibility to developing a thrombosis. In this short communication, according to relevant medical literature, the author describes her concerns if cardiovascular diseases may be prevented by eliminating modifiable risk factors, and following a healthy diet, healthy life style and controlling body weight, and whether it may have an important benefit in the successful management of MPN patients. Should we apply the “medical nutrition therapy” consciously in the most appropriate and effective antithrombotic strategy?

  • József Sárosi ,
    Zoltán Fabulya ,
    János Gyeviki ,
    Gábor Keszthelyi-Szabó ,
    Péter Szendrő :

    The newest and most promising type of pneumatic actuators is the pneumatic artificial muscle (PAM). Different designs have been developed, but the McKibben muscle is the most popular and is made commercially available by different companies (e. g. Fluidic Muscle manufactured by Festo Company). The most often mentioned characteristic of PAMs is the force as a function of pressure and contraction. In this paper our newest function approximation for the force generated by Fluidic Muscles is shown that can be generally used for different muscles made by Festo Company.

  • Ingrida Sedliaková :
    Corporate culture – its role, position and problems in business50-58en [202.60 kB - PDF]EPA-02592-00004-0080

    Numerous articles, publications and researches show a strong impact of a good corporate culture on business success and economic performance. A strong corporate culture can be responsible for the process of creation of internal organization values, and it can also influence the proper functioning of the company and even its competitiveness. In those companies, that recognize the importance of corporate culture, corporate culture can become the most important tool, which can help them to achieve their strategic objectives. According to opinions of some authors, an excellent corporate culture is “the spirit” of organization. It is a part of entrepreneur’s core competitiveness but also it is a bas of core competencies. The present article is focused on identification and evaluation of problems during the forming process of corporate culture. The identification of problems was realized through questionnaire at the sample of 130 respondents. The result of the research shows that certain issues such as "buying your own people" (69% of respondents believe that remuneration is unfair), "sanctions" (more than 1/4 of respondents think that work environment is not open for new ideas) or "copying of culture" (almost 1/4 of respondents answered that they do not feel comfortable in existing culture) are still appearing in the shaping of corporate culture of companies.

    Keywords: Corporate culture, competitiveness, competitive advantage

  • Balázs P. Szabó :

    The aim of this research was the investigation of winter wheat varieties, the kernel hardness and the dough features. We determined the kernel hardness with two dynamic methods. We measured the parameters of flour. The correlations among hardness index and the examined flour parameters were also significant (r=0.816-0.876). We found strong correlation between the grinding energy (eg) and water absorption (r=0.878) of the flour. Hardness Index – wet gluten (r=0.833), and Hardness Index – water absorption (r=0.876), Hardness Index – P value of alveograph (r=0.816) showed also positive correlations. We found correlation the water absorption and P value of alveograph (r=0.873).

  • Andrea Székely :
    Border region structures64-70en [654.48 kB - PDF]EPA-02592-00004-0100

    The aim of this analysis is to follow theoretically the way, how a border area becomes an integrated, well-functioning border zone. The definitions and classifications lead up to the concepts of cross-border space generally constructed in the 1990’s, in the works of Ratti, Renard or Sanguin. The spatial organization of cross-border regions is generally represented in schematic maps, including more or less objects (border line, rivers, roads, railroads, canals, cities and other settlements, etc.) and flows (capital, labor-power, tourists, migration, etc.). Maps for different border types and levels of cross-border cooperation use different elements and seem not comparable. We summarize these different maps and suggest some modifications and extensions, offering a more general tool for the theoretical analysis. The IT age partially changed the channels of communication; thereby the update of the models is current.

  • Anikó Türkössy :

    Cash flow statement may provide considerable information about what is really happening in a business beyond that contained in either the income statement or the balance sheet. Analyzing this statement should not present an intimidating task; instead it will quickly become obvious that the benefits of understanding the sources and uses of a company’s cash far outweigh the costs of undertaking some very straightforward analyses. The objective of IAS 7 is to require the presentation of information about the historical changes in cash and cash equivalents of an entity by means of a statement of cash flows, which classifies cash flows during the period according to operating, investing, and financing activities.

  • Edina Vincze-Lendvai ,
    József Csanádi :
    Some aspect of consumers’ habit by fermented milk products74-79en [52.09 kB - PDF]EPA-02592-00004-0120

    In our modern word everybody rush and has not got enough time for him/herself. The role of the nutrition has changed. It does not mean the quiet action, it means a snatching. So people like foods which not only beguile hunger, but save the health. The functional food looks like this meal. In our work we used questionnaire, and then we analysed the habits of the consumers related to the fermented milk products. Moreover, we made structured interview with 3 experts.

    Keywords: healthy food, probiotic, consumers’ habits