Materials Literature
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Steel is of utmost importance for each national economy. One of the benchmarks of industrial development of the country is production and consumption of steel. 1 Production and consumption of concrete and ferrous materials (steel and cast iron) dominate over other groups of technical materials. It is believed that the…
In this study, flax and hemp fibres were assessed as raw materials for air-laying nonwoven fabrication. We are therefore hypothesizing that through proper production processes, the competiveness of flax and hemp fibre based nonwovens can be significantly improved. We anticipate improving the material properties by adj…
Friction welding is a solid-state welding that produces weld without the addition of filler material. This study presents results of friction welding dissimilar material SUH 3 and SUH 35 with variation of process parameters: spindle rotation speed (v), friction force (F1), and friction time (T1). These parameters are…
The main goal of this research was to carry out the reduction of graphene oxide ( GO ) to graphene ( rGO ) by using olive leaf extract ( ELM ) . Reduction was carried out with different amounts of ELM. The sample obtained by using the smaller ratio ELM/GO was rGO1, while the sample obtained byusing higher ratio of ELM…
Tese de doutoramento em Engenharia Mecânica, na especialidade de Materiais Energéticos e Sistemas de Conversão de Energia, apresentada ao Departamento de Engenharia Mecânica da Faculdade de Ciências e Tecnologia da Universidade de Coimbra
It is known the necessity to change the earthquake resistant design methods to take the control of structural performance and therefore, it is been included new concepts aimed to support the functions and to keep the structural properties and moreover to preserve safety lives. Taking advantage of visual representation…
Die vorliegende Arbeit umfasst die Modellierung der lanzettartige Martensitmikrostruktur zur Untersuchung des Zusammenhangs zwischen den mechanischen Eigenschaften und der mikrostrukturellen Einheiten. Es wurde eine rechnergestützte Homogenisierung der mechanischen Eigenschaften von diesen Mikrostrukturen mit Hilfe ei…
Nanoparticulate technologies are showing promising potential in delivering both small-molecule drugs and biomacromolecules across the blood brain barrier.
peer reviewed
International audience
Usually, phosphate deposits contain 238U and 232Th in addition to their decay products. Due to their different pathways in the environment, the 238U/232Th activity concentration ratio usually found to be greater than unity in phosphate sediments. The presence of these radionuclides creates a potential need to control…
Understanding enzymes and their catalytic mechanisms is very important in order to develop more effective drugs having little to no side effects. In order to decipher the catalytic behavior of enzymes, different approaches such as QM, MM-MD, and QM/MM can be used and their results can be correlated. The main aim of th…
Synchrotron radiation in the tender x-ray energy range (2-13 keV) allows deep core-shell excitation/ionization of atoms and molecules. The electronic states populated have ultrashort lifetimes, in the order of one femtosecond. The atoms will then relax through emission of a photon or an electron. In this thesis, we us…
Metaloorganske mreže su posebna klasa spojeva u kemiji materijala koja predstavlja najbolju simbiozu kemije organskih i anorganskih spojeva u jednom. Građeni su od vise metalnih centara ili metalnih klastera povezanih međusobno organskim ligandima koji se u terminologiji metaloorganskih mreža nazivaju linkerima tvorec…
This work describes a new type of 1D electrode with high open space porosity achieved by PVD and H2-plasma etching. The production steps involve (i) coating of in-situ metal oxide-doped amorphous carbon layers by reactive sputtering technique (ii) top-down nano-structuring of the carbon layer by H2-plasma etching. Pre…
Characterizing dynamic moisture sorption and desorption in fumed silica-filled silicone foam is necessary for determining material compatibilities and life predictions, particularly in sealed environments that may be exposed to a range of environmental conditions. Thermogravimetric analysis (TGA) and near infrared spe…
This research project focuses on the creation and optimisation of the nanomaterial films for enhancing their medical and photocatalytic applications. Developing controlled drug delivery systems has been gaining increasing interest. Processing of metal oxides into porous nanostructures has been considered as a promisin…
Natural and artificial radioactivity concentrations of the Tobacco samples were determined using 20% n-type HPGe gamma-ray spectrometer. 226Ra, 232Th, 40K, 210Pb and 137Cs radioactivity concentrations were measured. 137Cs radioactivity concentrations were found to be MDA ( minimum detectable activity). 226Ra, 232Th, 4…
In order to improve the photovoltaic properties of polymer solar cells (PSC), varieties of donor and acceptor units were designed and synthesized to construct the highly efficient conjugated polymers. Recent years, materials based on benzo [1.2-b:4,5-b ¢ ]dithiophene (BDT) units have showed promising applications in t…
Abstract not provided.