|
|
Vliv délky a způsobu transportu jiker na jejich líhnivost u hlavatky obecné (Hucho hucho)
BERÁNEK, Lukáš
The success of transporting both unfertilized and fertilized artificially stripped ova of huchen from the farm for up to 5 days was tested. A mixture of ova from 8 females was divided into two parts. The first part was inseminated with artificially stripped sperm (a mixture from several males) on-site (1 hour after stripping), and after rinsing the fertilized ova with water, it was placed in water in a plastic sealable container. The second part of the ova, along with the ovarian fluid, was not inseminated with sperm and was placed in another identical container. Both containers were stored in a thermal insulation box for the following 5 days, including transportation from the site of artificial stripping to the incubation site. The mixture of collected sperm from 5 males was stored in syringes in a separate isothermal box at a temperature of +4°C. Both thermal insulation boxes were placed in the luggage compartment of a passenger car for 5 days. For the ova transported in water, the water was exchanged twice a day. Throughout the first day, both the ova and sperm were transported from the site of artificial stripping to a distance of 350 km to the incubation site. In the following days, the car was driven three times a day for at least 0.5 hour each time to simulate vibrations occurring during transportation. The ambient temperature for the ova during transportation was maintained at 10°C. Samples of both fertilized and unfertilized ova were taken at one-day intervals from the artificial stripping, and after counting and fertilization of the ova with transported sperm, they were rinsed and placed in small incubation dishes with separate water inflows and perforations allowing water flow and preventing the escape of subsequently hatched embryos. Thirty ova were always placed in each variant, with 3 repetitions in all variants. The incubation dishes were placed on the bottom of a shallow flow-through channel supplied with water from a recirculating system with cold-water fish farming. The average water temperature during incubation was 12.8°C. Mortality of the ova was monitored during incubation, white unfertilized or dead ova were removed, and hatching of the embryos was recorded. In the first variant, after stripping the fertilized ova transported in water for one, two, or three days, a hatchability of 32.2 ? 21.1%, 27.8 ? 10.3%, and 33.3 ? 32.1%, respectively, was achieved. After simulated transportation for four and five days, the hatchability decreased to 21.1 ? 1.57% and 15.6 ? 8.3%, respectively. The differences between all the aforementioned parameters are not statistically significant. In the second variant, with unfertilized ova transported in ovarian fluid, a comparable hatchability (34.4 ? 11%) was achieved after one day of transportation, as with fertilized ova transported in water for one to three days. Unfertilized ova transported in ovarian fluid for a longer period (two and three days) showed a statistically significant decrease in hatchability to 7.8 ? 8.8% and 2.2 ? 1.6%, respectively. A 100% mortality rate was found for ova transported in unfertilized ovarian fluid for four and five days. No differences were found in the length of the incubation period due to different methods or lengths of ova transportation. The experiment demonstrated the feasibility of using transportation of fertilized ova in water for several days, with transportation of fertilized ova in the aquatic environment being preferable.
|
|
|
Suggestion of E-shop for Company
Beránek, Lukáš ; Zajac, Tomáš (referee) ; Kříž, Jiří (advisor)
The thesis deals with suggestion of e-shop and its promotion on the internet. There are defined the specifics of internet marketing and fundamental definitions of e-commerce, furthermore application of selected marketing instruments and their economical evaluation.
|
|
|
Development of Competitiveness of Company
Horák, Tomáš ; Beránek, Lukáš (referee) ; Zich, Robert (advisor)
This diploma thesis addresses the issue enhancing the competitiveness of the company QUALITY GELATO DOLCE S.R.O. The company runs network of the confectionery’s shops under the business name AIDA. The theoretical part reviews the literature concerning the competitiveness of the company and aspects enhancing competitiveness. The theoretical aspects are used in the analytical part. The analytical part identifies the company, investigates its external and internal environment. Based on analytical findings, the assignment proposes improvements enhancing the company’s position on the market. The work presents specifics steps towards better competitiveness.
|
|
| |
|
| |
|
|
Fyzikální vlastnosti kapalných paliv a biopaliv pro zážehové motory
Beránek, Lukáš
The theoretical part of this thesis Physical properties of liquid fuels and biofuels for petrol engines describes fuels for petrol engines, it deals with properties this fuels and their production. It deals with nature of density, dynamic viscosity and measuring this parameters. Experimental part of this thesis is focused on measuring temperature depen-dence dynamic viscosity and density of gasoline, bioethanol and their mixtures. Results of the measuring are registred in tables and they are typified in graphs. Mathematical functions were found, which can be used for a convenient predicti-ons of physical properties of gasoline, biofuels and their mixtures.
|
|
|
Development of Competitiveness of Company
Horák, Tomáš ; Beránek, Lukáš (referee) ; Zich, Robert (advisor)
This diploma thesis addresses the issue enhancing the competitiveness of the company QUALITY GELATO DOLCE S.R.O. The company runs network of the confectionery’s shops under the business name AIDA. The theoretical part reviews the literature concerning the competitiveness of the company and aspects enhancing competitiveness. The theoretical aspects are used in the analytical part. The analytical part identifies the company, investigates its external and internal environment. Based on analytical findings, the assignment proposes improvements enhancing the company’s position on the market. The work presents specifics steps towards better competitiveness.
|
|
|
Suggestion of e-shop for company Autosklo ROGER, s.r.o.
Beránek, Lukáš ; Zajac, Tomáš (referee) ; Dydowicz, Petr (advisor)
This bachelor’s thesis was worked up for Autosklo ROGER s.r.o. company, who deals with sale, montages and repairs of car and bus windshields. It describes work of whole company and it adverts to actions to which could dramaticly help implementation of e-commerce, such as wholesale and reservation system of montages. The emphasis is putting to the most important analyses. In the concept it describes functions of e-shops.
|
|
|
Suggestion of E-shop for Company
Beránek, Lukáš ; Zajac, Tomáš (referee) ; Kříž, Jiří (advisor)
The thesis deals with suggestion of e-shop and its promotion on the internet. There are defined the specifics of internet marketing and fundamental definitions of e-commerce, furthermore application of selected marketing instruments and their economical evaluation.
|
|
|
Corporate Competitive Strategy
Beránek, Lukáš ; Čech, Ing Petr (referee) ; Bartes, František (advisor)
This thesis deals with the formation of competitive strategies for the company involved in services. The aim is to propose a competitive strategy of chosen company with regard to the current state of internal environment in relation to the external environment. Based on these objectives and competitive advantages will also propose time implementation of the strategy created.
|
guest ::
RSS feed.