Construction of the Recuperative Heat Exchanger to Streamline the Condensation of the Steam-Gas Mixture

Diplomová práce se zabývá konstrukčním návrhem bezpečnostní, kondenzační nádoby a návrhem konstrukce vnitřního výměníku tepla. Jedná se o bezpečnostní zařízení kompenzace chladiva primárního okruhu JE tlakovodního reaktoru VVER 1200. V první části práce je popsaná funkce a hlavní části kondenzační nádoby, následně se práce zaměřuje na popis rekuperačních výměníku tepla. Zde je popsána funkce, tvarové varianty a intenzifikace přenosu tepla. V praktické části práce je proveden tepelný výpočet a výpočet hlavních rozměru nádoby a vnitřního výměníku tepla. Následně je proveden návrh parního kolektoru, pojistného zařízení a proveden pevnostní výpočet pláště. V další části práce jsou provedeny výpočetní modely výměníku tepla pro různé tvarové varianty. Výsledný tvar výměníku tepla je zakomponován do 3D modelu sestavy kondenzační nádoby. V posledním kroku byla provedena výkresová dokumentace.This thesis deals about structural design of internal heat exchanger of condensation tank. This condensation tank is a special safety device of primary circuit, which regulates pressure of cooling water. This device is constructed for pressure water reactor VVER 1200. First part of thesis deals about principle of function of condensation tank and main parts of this device. Then are describe function and construction of heat exchanger used in condensation device. The practical parts of thesis consist of calculation and design of main parts of condensation tank and internal heat exchanger. Next parts of thesis are consist of mathematical models of different shape of heat exchangers. The best shape of heat exchanger is used in construction of tank. In last part of thesis are realised results of calculation and created 3D model of condensation tank. Then 3D model is transfer to the drawing documentation.361 - Katedra energetikyvýborn

A Roadmap for Functional Structural Variants in the Soybean Genome

Gene structural variation (SV) has recently emerged as a key genetic mechanism underlying several important phenotypic traits in crop species. We screened a panel of 41 soybean (Glycine max) accessions serving as parents in a soybean nested association mapping population for deletions and duplications in more than 53,000 gene models. Array hybridization and whole genome resequencing methods were used as complementary technologies to identify SV in 1528 genes, or approximately 2.8%, of the soybean gene models. Although SV occurs throughout the genome, SV enrichment was noted in families of biotic defense response genes. Among accessions, SV was nearly eightfold less frequent for gene models that have retained paralogs since the last whole genome duplication event, compared with genes that have not retained paralogs. Increases in gene copy number, similar to that described at the Rhg1 resistance locus, account for approximately one-fourth of the genic SV events. This assessment of soybean SV occurrence presents a target list of genes potentially responsible for rapidly evolving and/or adaptive traits

Development of mPing-based activation tags for crop insertional mutagenesis

Modern plant breeding increasingly relies on genomic information to guide crop improvement. Although some genes are characterized, additional tools are needed to effectively identify and characterize genes associated with crop traits. To address this need, the mPing element from rice was modified to serve as an activation tag to induce expression of nearby genes. Embedding promoter sequences in mPing resulted in a decrease in overall transposition rate; however, this effect was negated by using a hyperactive version of mPing called mmPing20. Transgenic soybean events carrying mPing-based activation tags and the appropriate transposase expression cassettes showed evidence of transposition. Expression analysis of a line that contained a heritable insertion of the mmPing20F activation tag indicated that the activation tag induced overexpression of the nearby soybean genes. This represents a significant advance in gene discovery technology as activation tags have the potential to induce more phenotypes than the original mPing element, improving the overall effectiveness of the mutagenesis system

A Roadmap for Functional Structural Variants in the Soybean Genome

Gene structural variation (SV) has recently emerged as a key genetic mechanism underlying several important phenotypic traits in crop species. We screened a panel of 41 soybean (Glycine max) accessions serving as parents in a soybean nested association mapping population for deletions and duplications in more than 53,000 gene models. Array hybridization and whole genome resequencing methods were used as complementary technologies to identify SV in 1528 genes, or approximately 2.8%, of the soybean gene models. Although SV occurs throughout the genome, SV enrichment was noted in families of biotic defense response genes. Among accessions, SV was nearly eightfold less frequent for gene models that have retained paralogs since the last whole genome duplication event, compared with genes that have not retained paralogs. Increases in gene copy number, similar to that described at the Rhg1 resistance locus, account for approximately one-fourth of the genic SV events. This assessment of soybean SV occurrence presents a target list of genes potentially responsible for rapidly evolving and/or adaptive traits

Heat Exchanger for Residual Heat Removal from Nuclear Reactor

Bakalářská práce se zabývá konstrukčním návrhem barbotážní nádrže jaderné elektrárny. Jedná se o zařízení kompenzace objemu sloužící ke kondenzaci přivedené paroplynové směsi z kompenzátoru objemu. Barbotážní nádrž je válcová nádoba o průměru 2,8 m a délky 8,3 m, která je ze 2/3 zaplněná chladicí vodou. V úvodu bakalářské práce je nejdříve popisován princip funkce primárního okruhu jaderné elektrárny používající tlakovodní jaderné reaktory VVER 440 a VVER 1000. Dále jsou popsány hlavní zařízení primárního okruhu JE, konstrukce barbotážní nádrže a její úděl v primárním okruhu JE. V praktické části bakalářské práce je proveden výpočet barbotážní nádrže pro zadané parametry páry. Z výsledných vypočtených hodnot je proveden konstrukční návrh barbotážní nádrže v programu Autodesk INVENTOR 2015. Nejprve byl proveden 3D model a následně výkres sestavení barbotážní nádrže.This bachelor thesis deals about structural design of barboteur of nuclear power plant. It is a special safety device of primary circuit, which regulates pressure of cooling water. Barboteur is a tank of 8,3 m length and diameter of 2,8 m filled to 2/3 by water. On first part of thesis are describe principle of function of primary circuit of nuclear power plant using pressurized water reactor VVER 440 and VVER 1000. On the next part of thesis are describe main parts of primary circuit. The practical part of bachelor thesis consists of design and calculation of parameters barboteur. Results of calculation are realised on 3D model of barboteur in sketching program Autodesk INVENTOR 2015. Then 3D model is transfer to the drawing documentation.361 - Katedra energetikyvýborn

Tardigrades from Nahuel Huapi National Park (Argentina, South America) with descriptions of two new Macrobiotidae species

Roszkowska, Milena, Stec, Daniel, Ciobanu, Daniel Adrian, Kaczmarek, Łukasz (2016): Tardigrades from Nahuel Huapi National Park (Argentina, South America) with descriptions of two new Macrobiotidae species. Zootaxa 4105 (3): 243-260, DOI: http://doi.org/10.11646/zootaxa.4105.3.