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Impact of fish pond manuring on microbial water qualityHana Mlejnková, K. SovováActa Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(3), 117-124 | DOI: 10.11118/actaun201260030117 |
Reverse logistics and 3PL in the Czech RepublicAlena KlapalováActa Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(7), 163-170 | DOI: 10.11118/actaun201260070163 |
Vliv teploty a chemického složení na viskozitu moravských vínMiroslav Havlíček, Libor Severa, Ivo KřivánekActa Univ. Agric. Silvic. Mendelianae Brun. 2007, 55(1), 59-64 | DOI: 10.11118/actaun200755010059 Standard chemical analysis was performed to characterise six samples of bottled wines from South Moravia. Temperature influence (range from 20 °C to 50 °C). Density data processing led to determination of the expansibility coefficients at 25 °C and their temperature dependence. It was found that, viscosity of wine decreases non-linearly with increasing temperature. Fitting of the experimental data in some theoretical models was performed in order to describe the temperature dependence of the viscosity of wine. A modified Andrade equation was found to best describe this dependence. The activation energy for viscous flow of wine, calculated by Arhenius relation, varied from 18.50 kJ.mol-1 to 20.15 kJ.mol-1. Correlations between the activation energy for viscous flow and the concentrations of solutes other than ethanol were estimated. |
Reasonability of wine investment in the Czech RepublicTomáš LintnerActa Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(2), 181-188 | DOI: 10.11118/actaun201260020181 |
VÝNOS A KVALITA LNU SETÉHO OLEJNÉHO (LINUM USITATISSIMUM L.) V RŮZNÝCH PĚSTITELSKÝCH PODMÍNKÁCHTomáš Středa, Marie BjelkováActa Univ. Agric. Silvic. Mendelianae Brun. 2007, 55(1), 153-164 | DOI: 10.11118/actaun200755010153 The aim of this study was on the basis of the field experiment in two different agroclimatic localities, two planting options (low and high input) and during three years find out the seed yield, seed oil content and composition of fatty acid in linseed oil (Linum usitatissimum L.), variety Lola (LinolaTM). By the help of standard laboratory analyses for paint parameter evaluation judge suitability of using the oil for painting industry. Linseed yield varied from 0.29 t.ha-1 to 2.35 t.ha-1. Statistical significant differences (P = 0.01) were found out for localities, years and planting options. Average seed oil content varied from 36.6% to 44.0%. Influence of locality was not significant, influence of year and planting option to seed oil content was highly significant (P = 0.01). Content of linoleic acid in oil was influenced mainly by locality and planting option and varied from 75.86% to 76.78%. Laboratory painting-technological evaluation of oils and alkyd resin experimental sample made for suitability of using low linolenic oil of linseed, variety Lola for production of non-yellowing alkyds and enamels. |
Niektoré ukazovatele obsahu chemických látok v mäse a kostiach brojlerov kŕmených dietou obsahujúcou Lactobacillus species zo sušeného jogurtuAmjad Arshad Abdulwahab, Erika HorniakováActa Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(2), 13-18 | DOI: 10.11118/actaun201058020013 The effect of dried yogurt (Kashik) based on Lactobacillus plantarum and Lactobacillus acidophilus on broiler meat crude protein and fat content and tibial bone mineral composition was studied. The birds were fed diets including probiotics only during the first 21 days of age. The trial groups T1, T2 and T3 were supplied with 1, 3 and 5 % Yoghurt, respectively. The control group was fed with a commercial feed mixture. Breast muscules nutrition quality was not significantly affected (P > 0.05) with Kashik up to day 21. The highest difference was 0.25% (C and T3) in crude protein content and 0.15% in crude fat (C and T2). Also, leg muscles crude protein and fat percentages were not affected by probiotics up to day 21 of age. The values varied from 18.76 to 19.24% and from 5.77 to 6.54% respectively. However, significant differences (P < 0.05) in legs' muscles crude protein (19.05 and 19.92% in C and TI group) and fat contents (4.82 and 6.33%) were observed between the T1 and T3 group up to 40 days of age. No significant effects of probiotics were observed on breast muscles mineral content up to 21 days and 40 days of age. Leg muscles mineral contents were not affected with probiotics up to 21 days, whereas up to 40 days only leg muscles P and Mg content was affected (1.80 and 1.61 g.kg-1 of P in C and T3 group and 0,42 and 0,44 g.kg-1 in C and T1, in Mg, resp.). There were no significant effects of treatments on tibial bone Ca and Mg contents up to day 21. However, tibial bone P content was significantly affected. The addition of 3 and 5 percents of Kashik increased tibial bone P content significantly (98.5g.kg-1 in T2, 97.0g.kg-1 in T3) above the value of the control group (80.5g.kg-1) up to 21 days of age. There were no significant differences between treatment groups and the control group in tibial bone P and Mg composition at day 40 of age. The values varied from 86.00 to 93.12% in C and T1 in P and 4.10 to 4.23g.kg-1 in Mg content. Some significant differences were observed between the treatment group which was supplemented with 1% of Kashik and the control group in tibial bone Ca composition at day 40 of age (213.62 and 229.06g.kg-1, resp.). |
VALIDACE METOD PRO STANOVENÍ OBSAHU VOLNÉ VODY V DRŮBEŽÍM MASEJarmila Žítková, Jana SimeonovováActa Univ. Agric. Silvic. Mendelianae Brun. 2007, 55(2), 105-118 | DOI: 10.11118/actaun200755020105 Methods for determination of free water content in poultry meat are described in Commission Regulation EEC No 1538/91 as amended and in ČSN 57 3100. Two of them (method A and D) have been validated in conditions of a Czech poultry processing plant. The capacity of slaughtering was 6000 pieces per hour and carcasses were chilled by air with spraying. All determinations were carried out in the plant's lab and in the lab of the Institute of Food Technology. Method A was used to detect the amount of water lost from frozen chicken during thawing in controlled conditions. Twenty carcasses from six weight groups (900 g-1400 g) were tested. The average values of thaw loss water contents ranged between 0.46% and 1.71%, the average value of total 120 samples was 1.16%. The results were compared with the required maximum limit value of 3.3%. The water loss content was in negative correlation with the weight of chicken (r = -0.56). Method D (chemical test) has been applied to determine the total water content of certain poultry cuts. It involved the determination of water and protein contents of 62 representative samples in total. The average values of ratio of water weight to proteins weight WA/RPA were in breast fillets 3.29, in legs with a portion of the back 4.06, legs 4.00, thighs 3.85 and drumsticks 4.10. The results corresponded to the required limit values for breast fillets 3.40 and for leg cuts 4.15. The ratio of water weight to proteins weight WA/RPA was correlated with the weight of chicken for breast fillets negatively (r = -0.61) and for leg cuts positively (r = 0.70). Different correlations can be explained by the distribution of water, protein and fat in carcasses. The evaluation of methods in the parameter of percentage ratio of the average value to the limit showed that method D (results were at the level of 97% of the limit) was more exact than method A (results were at the level 32% of the limit) but it is more expensive. Both methods were tested with the same technological equipment and at the same time. As far as the validation is concerned, it can be concluded that no substantial modification of methods is necessary. |
Estimation of the competitive conditions in the Czech banking sectorDaniel Stavárek, Iveta ŘepkováActa Univ. Agric. Silvic. Mendelianae Brun. 2011, 59(2), 299-306 | DOI: 10.11118/actaun201159020299 |
Efficiency of the building societies in the Czech RepublicLukáš Leksovský, Daniel StavárekActa Univ. Agric. Silvic. Mendelianae Brun. 2011, 59(4), 143-150 | DOI: 10.11118/actaun201159040143 |
PŘÍSTUP KONCEPTU SOLVENCY II K ŘÍZENÍ RIZIK V KOMERČNÍCH POJIŠŤOVNÁCHEva VávrováActa Univ. Agric. Silvic. Mendelianae Brun. 2010, 58(3), 261-270 | DOI: 10.11118/actaun201058030261 In the year 2001, the European Comission started to revise the legislation Solvency I and to implement a new approach called Solvency II. The regulation called Solvency II is based on regulation considering management of risks of commercial insurance companies. Changes on financial markets and the contemporary financial crisis made financial authorities to formulate principles of regulation based on risk management. Commercial insurance companies across Europe will face a considerable amount of work to be ready for requirements related with Solvency II implementation in the year 2012. |
Effects of direct investments on the regional developmentGabriela Chmelíková, Radka RedlichováActa Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(7), 119-126 | DOI: 10.11118/actaun201260070119 |
Incomes of rural and non-rural households in the Czech RepublicFrantišek Střeleček, Radek ZdeněkActa Univ. Agric. Silvic. Mendelianae Brun. 2011, 59(4), 319-326 | DOI: 10.11118/actaun201159040319 |
Entrepreneurship within health care - a dilemma of identity and professionJarmila ŠebestováActa Univ. Agric. Silvic. Mendelianae Brun. 2011, 59(7), 423-430 | DOI: 10.11118/actaun201159070423 |
The conception "an enterprise as a microcivilization"Svitlana L. Blagodietielieva-VovkActa Univ. Agric. Silvic. Mendelianae Brun. 2011, 59(2), 35-42 | DOI: 10.11118/actaun201159020035 |
Employee benefits or wage increase?Jiří DudaActa Univ. Agric. Silvic. Mendelianae Brun. 2011, 59(2), 65-68 | DOI: 10.11118/actaun201159020065 |


