Engineering Design of Building Concrete Mixer.

Import 29/09/2010Diplomová práce se zabývá konstrukčním návrhem, výpočtem a údržbou stavební míchačky na beton. V úvodu je proveden průzkum trhu, ve kterém jsou srovnány stavební míchačky na beton dostupné v České republice. Dále diplomová práce obsahuje volbu hnacího pohonu, návrh konstrukční řešení stavební míchačky na beton s patřičnými výpočty a návrh vhodné údržby. Konstrukční řešení navržené stavební míchačky na beton umožňuje míchání malty a betonových směsí do objemu 130 litrů.This master thesis deals with engineering design, calculation and maintainance of building concrete mixer. In the introduction of thesis performed i the market research of concrete mixers in Czech Republic and their comparing. This thesis contains the traction drive selection and design of construction and maintainance of concrete mixer. All relevant calculations master thesis contains too. Engineering design of concrete mixer allows mixing mortar and concrete mixtures by volume of 130 liters.340 - Katedra výrobních strojů a konstruovánívelmi dobř

Characteristics of Sudan Iii-Poly(N Vinylcarbazole) Composite Film for Optical Sensor Application

Photo-responsive molecule Sudan III has been developed in form of thin film to pursue their excellent properties especially for optical sensor device application. However, thin film of Sudan III possesses a weak mechanical property. And therefore in order to enhance this functional property of the Sudan III molecule was embedded within polymer matrix to form composite material. In this research, the thin films composite of Sudan III-Poly(N-Vinylcarbazole) or Sudan III/PVK were fabricated by using casting and spin coating methods. The structure of Sudan III-Poly(N-Vinylcarbazole) composite material were characterized by using FTIR, XRD measurement and for the optical property (absorbance) by UV-VIS measurement. In this paper the experiment results are presente

Terapeutiese paradoks as fasilitering van hoop binne 'n pastoraal-narratiewe benadering (Afrikaans)

Please read the abstract in the section 00front of this documentThesis (DD (Pastoral Family Therapy))--University of Pretoria, 2007.Practical Theologyunrestricte

Los principios del derecho al trabajo frente al contrato administrativo de servicios - CAS en la Dirección de Educación, Moyobamba, 2019

En el presente trabajo de investigación se verifico que cuando los ciudadanos relacionados a actividades laborales cuando ven afectados, sus derechos laborales serán llevados ante el poder judicial a través de los procedimientos correspondientes para garantizar una tutela jurisdiccional efectiva para la resolución de conflictos laborales. Cuando el juez verifique el caso, aprobará una resolución que crea que tiene motivos suficientes para transformar su decisión, poniendo fin al conflicto laboral. De lo anterior se puede concluir que estos principios antes indicados permiten la extensión de la norma y los criterios para encontrar un nuevo camino a la solución y la indicada aplicación de la norma, por lo que es necesario invocar la norma en los diversos conflictos que puedan surgir en el ámbito civil, penal o laboral. Asimismo refiere que consideramos algunos principios dentro de los cuales se encuentran la irrenunciabilidad de derechos, en caso de duda la norma más favorable al trabajador y de norma más favorable de los derechos laborales porque no tienen nada que ver con el tema que nos ocupa, que se relaciona más con la importancia del derecho laboral

Circular economy strategies for electric vehicle batteries reduce raw material reliance

The wide adoption of lithium-ion batteries used in electric vehicles will require increased natural resources for the automotive industry. The expected rapid increase in batteries could result in new resource challenges and supply-chain risks. To strengthen the resilience and sustainability of automotive supply chains and reduce primary resource requirements, circular economy strategies are needed. Here we illustrate how these strategies can reduce the extraction of primary raw materials, that is, cobalt supplies. Material flow analysis is applied to understand current and future flows of cobalt embedded in electric vehicle batteries across the European Union. A reference scenario is presented and compared with four strategies: technology-driven substitution and technology-driven reduction of cobalt, new business models to stimulate battery reuse/recycling and policy-driven strategy to increase recycling. We find that new technologies provide the most promising strategies to reduce the reliance on cobalt substantially but could result in burden shifting such as an increase in nickel demand. To avoid the latter, technological developments should be combined with an efficient recycling system. We conclude that more-ambitious circular economy strategies, at both government and business levels, are urgently needed to address current and future resource challenges across the supply chain successfully

A qualitative comparison of South Africa’s geomatics professional body’s academic model against industry’s understanding of SDI knowledge and skills requirements

The South African Spatial Data Infrastructure (SASDI) was established in 2003. Registration of geographical information science (GISc) practitioners by the South African geomatics professional body followed in 2004 and accreditation of university GISc programmes in 2012. In 2010 the Committee for Spatial Information (CSI) identified inadequate knowledge and skills of GISc practitioners as a challenge for the implementation and maintenance of SASDI. In response, spatial data infrastructure (SDI) knowledge and skills requirements for GISc professionals were specified by GISc industry representatives and the professional body’s academic model was qualitatively compared against these requirements. Results are discussed and improvements recommended.This research was partly supported by a GSDI Small Grant Award, titled Developing a framework for South African SDI education and training.http://www.tandfonline.com/loi/cjgh202016-04-3

The theory of synchrotron emission from supernova remnants

The time-dependent nonlinear kinetic theory for cosmic ray (CR) acceleration in supernova remnants (SNRs) is applied studying the properties of the synchrotron emission from SNRs, in particular, the surface brightness-diameter ($\Sigma-D$) relation. Detailed numerical calculations are performed for the expected range of the relevant physical parameters, namely the ambient density and the supernova explosion energy. The magnetic field in SNRs is assumed to be significantly amplified by the efficiently accelerating nuclear CR component. Due to the growing number of accelerated CRs the expected SNR luminosity increases during the free expansion phase, reaches a peak value at the beginning of the Sedov phase and then decreases again, since in this stage the overall CR number remains nearly constant, whereas the effective magnetic field diminishes with time. The theoretically predicted brightness-diameter relation in the radio range in the Sedov phase is close to $\Sigma_\mathrm{R}\propto D^{-17/4}$. It fits the observational data in a very satisfactory way. The observed spread of $\Sigma_\mathrm{R}$ at a given SNR size $D$ is the result of the spread of supernova explosion energies and interstellar medium densities.Comment: 13 pages, 8 figures, accepted for publication in Astronomy & Astrophysic

Paranannizziopsis spp. infections in wild snakes and a qPCR assay for detection of the fungus

The emergence of ophidiomycosis (or snake fungal disease) in snakes has prompted increased awareness of the potential effects of fungal infections on wild reptile populations. Yet, aside from Ophidiomyces ophidiicola, little is known about other mycoses affecting wild reptiles. The closely related genus Paranannizziopsis has been associated with dermatomycosis in snakes and tuataras in captive collections, and P. australasiensis was recently identified as the cause of skin infections in non-native wild panther chameleons (Furcifer pardalis) in Florida, USA. Here we describe five cases of Paranannizziopsis spp. associated with skin lesions in wild snakes in North America and one additional case from a captive snake from Connecticut, USA. In addition to demonstrating that wild Nearctic snakes can serve as a host for these fungi, we also provide evidence that the genus Paranannizziopsis is widespread in wild snakes, with cases being identified in Louisiana (USA), Minnesota (USA), Virginia (USA), and British Columbia (Canada). Phylogenetic analyses conducted on multiple loci of the fungal strains we isolated identified P. australasiensis in Louisiana and Virginia; the remaining strains from Minnesota and British Columbia did not cluster with any of the described species of Paranannizziopsis, although the strains from British Columbia appear to represent a single lineage. Finally, we designed a pan-Paranannizziopsis real-time PCR assay targeting the internal transcribed spacer region 2. This assay successfully detected DNA of all described species of Paranannizziopsis and the two potentially novel taxa isolated in this study and did not cross-react with closely related fungi or other fungi commonly found on the skin of snakes. The assay was 100% sensitive and specific when screening clinical (skin tissue or skin swab) samples, although full determination of the assay’s performance will require additional follow up due to the small number of clinical samples (n = 14 from 11 snakes) available for testing in our study. Nonetheless, the PCR assay can provide an important tool in further investigating the prevalence, distribution, and host range of Paranannizziopsis spp. and facilitate more rapid diagnosis of Paranannizziopsis spp. infections that are otherwise difficult to differentiate from other dermatomycoses