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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Vlhkostní podmínky půdy u cukrovky při různém stupni utužení

Halla, Pavel January 1970 (has links)
No description available.
12

Produkční a ekonomické hodnocení pěstování cukrovky při různých způsobech zpracování půdy

Jašková, Sabina January 2015 (has links)
Sugar beet belongs to group of very importat crops in the agrotechnical and an economic terms. This dissertation deals with the evaluation of different variants of land processing and their influence on the amount of yield, sugar content and economy of sugar beet cultivation. The main experiment was conducted at the experimental field station in Žabčice. The evaluation was based on field experiment AGRO 2. As part of the crop rotation sugar beet was grown after winter wheat. Three variants of land processing were evaluated I. -- Classical with plowing, II. - Minimization technology (loosening), III. - Minimization technology (direct sowing). Three different methods of land processing were compared. Results achieved in years 2012 - 2014 were evaluated. Evaluation of the results showed that influence of land processing on yield of tubers was not statistically evidential. The highest avarage yield was found in the traditional processing with plowing. Influence of land processing was not statistically evidential even at the yield of rosette of leaves, but it was statistically evidential at sugar content. A certain tendency of increasing the sugar content at a lower land processing treatment was proven. Influence of the year was statistically evidential. Above standard was yield at the end of year 2014. After evaluation of the economic indicators of sugar beet, we can say that higher yields and the highest sales per 1 hectar were achieved, thanks to the classic land processing. Results of the study show that there is certain possibility of reducing depth and intensity of land processing for sugar beets. Of course the priority is to achieve good returns at lower costs. Minimal land processing is relatively fast expanding, and both ecological and economic advantages are connected with it.
13

Studium zdravotního stavu a ochrany skaldované cukrovky

Čača, Zdeněk January 1959 (has links)
No description available.
14

Příspěvek k řešení mechanizované sklizně cukrovky

Kolařík, Josef January 1963 (has links)
No description available.
15

Změny kvality cukrovky během vegetace a možnosti jejich ovlivnění

Chodurová, Martina January 2016 (has links)
One of the aims of the dissertation thesis was to evaluate the dynamics of changes in the sugar beet quality during the growth and development with respect to different agro-ecological conditions on small-plot experiments in the years of 2010 and 2011. The possibilities of foliar nutrition application were proved on yield and technological parameters of sugar beet (digestion, soluble ash, alpha-amino nitrogen). Another objective was to assess the dynamics of yield and changes in the technological quality of sugar beet during the growing season in Central Moravia carried out in the cooperation with the sugar factory called Vrbátky. In the monitoring, the data were evaluated from the years of 2005 - 2011. The monitoring was carried out in the second half of sugar beet growth, as sugar factories normally prove in the country. The conditions for the growth and development of sugar beet and its technological quality were better in the year of 2010 than in 2011. The highest weight of tops was reached with the use of spray fertilizer called Magnitra L for the variants with within small plot experiments. The highest root weight showed sugar beet harvested after the application of Carbonbor K. The highest sugar content proved the tubers after the fertilization with Bortrac. The content of soluble ash was observed after the application of Magnitra L. Dangerous nitrogen content was low in all variants. Sugar beet was mature. In 2011, the highest leaf area of sugar beet was found out using the spray called Carbonbor K. The highest root weight was determined in the variant with Carbonbor K spray. The highest sugar content proved the tubers after the fertilization of Carbonbor K and Carbonbor Na. The content of soluble ash and harmful nitrogen was higher than in 2011. In the monitoring, the following dependences were proved: Weight tops decreased during the vegetation. On the average of the years, a weight lowered from 980 g/plant to 450 g/plant. The root reached from 640 to 900 g /plant as well as sugar content increased from 14, 26 to 15.8 %. Significant differences were found out between the years.
16

Možnosti využití minimalizace zpracování půdy při pěstování cukrovky

Peřina, Josef January 1974 (has links)
No description available.
17

Vliv různého zpracování půdy na výnosy a ekonomiku pěstování cukrovky

Dehner, David January 2015 (has links)
The effect of different soil tillage on yields and economy growing of sugar beet grown after three forecrops (spring barley, winter wheat and silage maize) was studied in a long-term stationary field experiment conducted in the years 1993-2014 on loamy chernozem soil in sugar beet producing area. Four variants of soil tillage (1. variant -- plowing at 0.28 m, 2. variant - plowing at 0.22 m + loosening at 0.40 to 0.45 m, 3. variant - plowing at 0.28 m + freezable crop sowing and 4. variant - plowing to 0.22 m + freezable crop sowing) were evaluated. Observed results of impact of alternative soil tillage methods on the sugar beet grown after three forecrops on yields, sugar content and economy generally indicate suitability (from the point of production and economy) of the tillage technology with sowing of sugar beet into freezable crop. At least appropriate, in the given drier and warmer site conditions, was reflected deeper soil loosening to 0.40 - 0.45 m. The best forecrop for sugar beet was winter wheat, the least suitable forecrop was silage corn.
18

Vliv enzymů, aplikovaných na zpracované bulvy cukrové řepy, ovlivňující kvalitu saturované šťávy / The influence of enzymes applied on processed sugar beet bulbs on the quality of saturated juice

Langrová, Petra January 2016 (has links)
The thesis focuses on the determination of dextran presence and its potential amount in sugar made semi-products. Dextran is a polysaccharide which is created on a sugar beet tuber due to inappropriate storing, because of low temperatures or wound of beet tissue, which is subsequently prone to infections caused by Leuconostoc mesenteroides microorganism. The infection results in creation of polysaccharides and other secondary products which have a negative influence on technological processing of beet. Levan and dextran create the highest amount of these polysaccharides in sugar beet. They significantly increase the viscosity of sugar juice. It is subsequently seen on crystallization of calcium carbonate during the second saturation and this causes the deterioration of filterability. In case of dextran or other polysaccharides presence other problems arise in the technological process of sugar production. For its elimination enzymatic hydrolysis is used with the aid of dextranase or alfa amylase. This element splits dextran polysaccharide into smaller oligosaccharids which are not caught in filtration device and therefore do not cause reduction in production capacity. Commercially accessible dextranase; however, is financially demanding so that there are researches trying to find more economical ways. This diploma thesis evaluates the presence of dextran in extracted juice by means of ICUMSA GS8-19 (year 2009). The method evaluates the presence of dextran in diffused, heavy and II. saturated juice. The research was focused on determination of alkalinity, pH, sedimentation and filtration coefficient, polarization, sugar content and purity. The aim of this thesis is to evaluate the correlation between recorded numbers and the application of the two enzymes which are used for removal of these problems. After completion of the experiment and evaluation of measured results in operating laboratory of sugar factory Tereos TTD Dobrovice, connection among laboratory measured data was not proved. Our recorded data did not prove reciprocal relation. The only proved connection was about number of rinsed filters (per day) after II. saturation and amount of used enzymes. The amount of enzymes influences how many times per day filters must be rinsed in order to get rid of deposit. In case of high amount of dextran, filters started to be clogged by impervious layer of molecules and in case that enzymatic way was not used for elimination of this saccharide, the only solution was frequent filters rinsing or reduction in working capacity connected to subsequent prolongation of processing campaign. Further, we proved the efficiency of alfa amylase which was used during beet processing (after New Year). This enzyme had the same impact on elimination of polysaccharides and clearance of filters. It is to say that in following campaigns it is possible to substitute financially demanding enzyme for cheaper alfa amylase.
19

Vyorávací ústrojí strojů pro sklizeň bulev a jejich hodnocení z pohledu kvality práce a energetické náročnosti

Rybář, Rudolf January 1992 (has links)
No description available.
20

Diabetes mellitus a její dopad na státní rozpočet ČR / Diabetes mellitus and its impact to state budget of the Czech Republic

Metelková, Kateřina January 2011 (has links)
This thesis deals with quantifying the costs of treatment of disease, which is by experts described as pandemic of the 21st century, diabetes. In the Czech Republic, the costs of treatment represents more than 6 % of total health expenditures and its quantity is growing, as well as the number of patients. The main goal is to determine costs of treatment for the 1st and the 2nd type of diabetes and the post-treatment complications associated with this disease using up-to-date statistical data and methodology called Pilot analysis of pharmacoeconomic aspects of diabetes mellitus treatment. This thesis also evaluates the change in regulation announcement in the CR and the Czech Republic's approach to diabetes as an incurable disease.

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