The aim of this study was to describe quality changes of eight long-life foods (instant potato purée with milk, instant goulash soup, canned white-type cheese, pre-baked baguette, szeged goulash meal-ready-to-eat, canned chicken meat, pork pate and canned tuna fish) during three-month storage at 4 different temperatures (-18 °C, 5 °C, 23 °C and 40 °C). These temperatures were chosen to simulate various climatic conditions in which these foods could be used to ensure the boarding during crisis situations and military operations to provide high level of sustainability. Foods were assessed in terms of microbiological (total number of aerobic and/or facultative anaerobic mesophilic microorganisms, number of aerobic and anaerobic spore-forming microorganisms, number of enterobacteria, number of yeasts and/or moulds), chemical (pHvalues, dry matter, fat, crude protein, ammonia and thiobarbituric acid reactive substances contents), texture profile (hardness) and sensory (appearance, consistency, firmness, flavour and off-flavour) analyses. Microbiological analyses showed expected results with the exception of szeged goulash, pork pate and tuna fish, which, although being sterilised products, contained some counts of bacteria. The decrease of pH-values and increase of dry matter, ammonia and thiobarbituric acid reactive substances contents were observed during the storage of all foods due to prolonged storage time and/or elevated storage temperature. Furthermore, according to texture profile analysis, hardness of cheese and baguette rose as a result of both storage temperature and time. Finally, the highest storage temperature (40 °C) resulted in a deterioration of sensory quality (especially flavour) of most foods; the exceptions were pate and tuna fish which retained good sensory quality throughout 3-month storage at all temperatures.
The paper describes the basic types of rivers and watersheds whose features manifest themselves markedly in the river system of the Czech part of the river Labe. The types are demonstrated on four rivers with reference to possibilities of application in other regions. The significance of the differentiation of the types was shown on practical water engineering tasks.
The effects and impacts of human activities on hydrosphere components are in many countries the subject of scientific research activities mainly in those with developed economy. Mutual exchange and confrontations of findings, methodological approaches and especially application of scientific data in practical solutIons are everywhere of great significanr.e. This holds specially true in actions tha' in their conceptions and processing contain progressive innovation elements.In this sense the presented contribution deals with those topics in which national efforts can bring the best results on international scale. I t is based on the fact that the problem is of interdisciplinary character and essentiaHy belongs into the field of geography; additional scientific disciplines and application fields act as supplementary components.
The paper deals with the enhancement efficiency of pedagogical procedures of military equipment operation. The aim of the paper is to point out how there were created selected sequences of logistics processes implemented in the use and maintenance, including information support for available analytical tools. There were also redefined logistics processes to understand management functions and logistics processes. As a result of the research a software was developed, which by basic analogous methods and programming helps to develop the educational e-learning program. The program is applicable in the Moodle environment for the needs of students. The educational program aims at verifying the knowledge acquired in the area of operation and its objective is to support practicing principles and procedures. The program is based on a methodical practice of selected activities. It was created for practicing in the e-learning environment. The course has multifunctional purpose, especially to introduce to students selected processes logistical support. The course has to evaluate through interactive approaches, to verify theoretical and practical knowledge. It should help to teach the students how to work in logistics information system (ISL) environment and deepen their practical skills.
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