Pressure Chamber for Universal Testing Machine

Import 29/09/2010Diplomová práce se zabývá kontrolou tlakové komory pro univerzální zkušební zařízení. Kontrola jednotlivých součástí bude provedena analytickými a numerickými výpočty. Pro analytické výpočty bude probrána a využitá teorie tlakových tlustostěnných nádob a teorie stability těles. Pro analytické řešení bude nastíněna problematika řešení metodou konečných prvků (MKP). Metoda konečných prvků bude aplikována v programu Patran a výpočetní program bude použit MD Nastran. Výpočty se týkají součástí, které jsou namáhány na tlak, případně tah. V závěru budou výsledky mezi sebou vyhodnoceny.This thesis deals with the control of pressure chamber for universal test device. The check of each part will be done with the help of analytical and numerical calculations. For analytical calculations the theory of thick-walled pressure vessels and the theory of stability of solids will be discussed and utilized. Analytical solutions of the problems will be outlined in finite element method (FEM). The finite element method will be applied in Patran computer program and the computing program MD Nastran will be used. The calculations deal with the components that are subjected to pressure or tension. At the close, the results will be evaluated among themselves.339 - Katedra pružnosti a pevnostivýborn

Badania techniki i technologii malarskiej cudami słynącej Piety z Czarnego Potoku (1649 r.)

As a part of the 3rd edition of MOLAB/FIXLAB PL in 2019 a programme of examination of a panel painting depicting the miraculous image of Our Lady of Sorrows, knownas the Pietà of Czarny Potok (1649) was carried out. The painting is attributed to an Antwerp painter, studying in Rome, Matthew Ingerman, who had settled in Lesser Poland in XVII c. Both sides of the painting were photographed in analytical lights (VIS, Na, UV, IR) and then scanned using the X-ray macro-fluorescence method (MA-XRF), this resulted in acquiring legible maps of the elemental composition on its surface and a preliminary assessment of the pigments used by the artist as well as of the range of subsequent transformations – overpaintings. On the reverse, underneath a visible inscription in black, its original version equal in contents was revealed, with two additional letters of the name of the former parson of the church in Czarny Potok visible. Samples were taken from the key parts of the painting, to prepare cross sections which were subjected to an Energy Dispersive X-ray Spectroscopy on a Scanning Electron Microscope (SEM-EDS), which allowed for a detailed identification of the stratigraphy of individual parts of the painting and their composition. An interesting imprimitura was identified, as well as the use of: chalk, gypsum, lead white, minium, vermilion ochre, orpigment/realgar, azurite, smalt, ultramarine, bone black, vegetable black, umber andorganic red lake in paint layers. The authenticity of the unique aureole around the head of Our Lady was confirmed during the research. The research was supplemented with the analysis of the binding media using the Fourier-transform infrared spectroscopy method (FTIR). It was established that the panel was coated with a chalk and glue primer, and the painting was created in tempera technique with colourful glazes.W ramach trzeciego naboru wniosków MOLAB/FIXLAB PL w 2019 r. zrealizowano program badań obrazu tablicowego z cudami słynącym wizerunkiem Matki Boskiej Bolesnej, tzw. Piety z Czarnego Potoku (1649 r.), której autorstwo przypisuje się antwerpskiemu malarzowi wykształconemu w Rzymie – Mateuszowi Ingermanowi, osiadłemu w Małopolsce w XVII w. Obraz został z obu stron sfotografowany w światłach analitycznych (VIS, Na, UV, IR), a następnie poddany skanowaniu metodą makrofluorescencji rentgenowskiej (MA–XRF), dzięki czemu uzyskano czytelne mapy rozkładu pierwiastków na jego powierzchni i wstępną ocenę użytych przez artystę pigmentów oraz zasięg późniejszych przekształceń. Na odwrociu, pod widniejącym napisem czernią, odnaleziono jego pierwotną wersję o zbieżnej treści, z dodatkowo widocznymi dwiema kolejnymi literami nazwiska dawnego proboszcza kościoła w Czarnym Potoku. Z kluczowych miejsc malowidła pobrano i przygotowano przekroje boczne, które poddano energodyspersyjnej analizie rentgenowskiej na skaningowym mikroskopie elektronowym z analizatorem EDS (SEM-EDS), co pozwoliło na szczegółowe rozpoznanie stratygrafii poszczególnych partii obiektu i ich składu. Stwierdzono występowanie na obrazie ciekawej imprimitury oraz użycie w warstwach malarskich: kredy, gipsu, bieli ołowiowej, minii, vermillionu, ochry, aurypigmentu/realgaru, glejty ołowiowej, azurytu, smalty, ultramaryny, czerni kostnej, roślinnej, umbry oraz laserunków organicznych, w tym kraplaku. W trakcie badań potwierdzono autentyczność wyjątkowej aureoli wokół głowy Matki Bożej. Badania uzupełniono analizą spoiwmetodą spektroskopii adsorpcyjnej w podczerwieni (FTIR). Ustalono, że tablica pokryta jest zaprawą kredowo-klejową, a malowidło wykonano w technice białkowo-żywicznej

Assessment of condition of underground collector lines situated inside the technological complexes of underground storage facilities

The evaluation of status of underground gas pipeline systems operating for several decades becomes a decisive factor of the decision making for their further safe and reliable operation. The decision becomes crucial especially in cases when piping is installed within a facility without the cathodic protection. The evaluation and inspection of underground gas manifolds requires a specific approach tailored for the respective manifolds.In 2003 NAFTA, the company initiated an extensive plan of the underground gas manifolds diagnostics and evaluation. The results were presented within the Working Committee WOC2 at the 23rd World Gas Congress in Amsterdam

Trehalose, mannitol and arabitol as indicators of fungal metabolism in late Cretaceous and Miocene deposits

Trehalose, mannitol and arabitol are the main saccharides of extant fungal metabolism, but their occurrence and distribution in geological materials have rarely been considered. Here, we identify these sugars in Miocene lignites and for the first time in Late Cretaceous mudstones and coals. The co-occurrence of trehalose, mannitol and arabitol in the sedimentary rocks investigated suggests their fungal origin, because these three saccharides are major compounds present in most modern fungi, including the very common mycorrhizal and wood-rotting groups. Therefore, we conclude that these sugars should be treated as new fungal biomarkers (biomolecules) present in geological rocks. Trehalose and mannitol are major compounds in total extracts of the samples and a sum of their concentration reaches 4.6 μg/g of sample. The arabitol concentrations do not exceed 0.5 μg/g, but in contrast to trehalose, the concentration correlates well with mannitol (R2=0.94), suggesting that they have the same, translocatory role in fungi. Based on the trehalose vs. mannitol and arabitol distributions in Cretaceous samples and their comparison with data for modern fungi, we preliminarily conclude that the coal seams from the Rakowice Małe (SW Poland) section were formed during warmer climatic periods than the overlying sediments. Furthermore, no DNA could be isolated from the samples of lignites and overlying sediments, whereas it was abundant in the control samples of maple, birch and oak wood degraded by fungi. This indicates an absence of recent fungi responsible for decay in lignites and implies that the saccharide origin is connected with ancient fungi. Other sugar alcohols and acids like D-pinitol, quinic acid and shikimic acid, were found for the first time in sedimentary rocks, and their source is inferred to be from higher plants, most likely conifers. The preservation of mono- and disaccharides of fungal origins in pre-Palaeogene strata implies that compounds previously thought as unstable can survive for tens to hundreds of millions of years without structural changes in immature rocks unaffected by secondary processes

State of Climate 2011 - Global Ocean Phytoplankton

Phytoplankton photosynthesis in the sun lit upper layer of the global ocean is the overwhelmingly dominant source of organic matter that fuels marine ecosystems. Phytoplankton contribute roughly half of the global (land and ocean) net primary production (NPP; gross photosynthesis minus plant respiration) and phytoplankton carbon fixation is the primary conduit through which atmospheric CO2 concentrations interact with the ocean s carbon cycle. Phytoplankton productivity depends on the availability of sunlight, macronutrients (e.g., nitrogen, phosphorous), and micronutrients (e.g., iron), and thus is sensitive to climate-driven changes in the delivery of these resources to the euphotic zon

The Sentinel-3 Mission Performance Center

As part of the Sentinel-3 mission and in order to ensure the highest quality of products, ESA in cooperation with EUMETSAT has set up the Sentinel-3 Mission Performance Centre (S-3 MPC). This facility is part of the Payload Data Ground Segment (PDGS) and aims at controlling the quality of all generated products, from L0 to L2. The S-3 MPC is composed of a Coordinating Centre (CC), where the core infrastructure is hosted, which is in charge of the main routine activities (especially the quality control of data) and the overall service management. Expert Support Laboratories (ESLs) are involved in calibration and validation activities and provide specific assessment of the products (e.g., analysis of trends, ad hoc analysis of anomalies, etc.). The S-3 MPC interacts with the Processing Archiving Centres (PACs) and the Marine centre at EUMETSAT

Project Status of the Polish Synchrotron Radiation Facility Solaris

Abstract in Undetermined The Polish synchrotron radiation facility Solaris is being built at the Jagiellonian University in Krakow. The project is based on an identical copy of the 1.5 GeV storage ring being concurrently built for the MAX IV project in Lund, Sweden. A general description of the facility is given together with a status of activities. Unique features associated with Solaris are outlined, such as infrastructure, the injector and operational characteristics