Materials Literature
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X-ray detectors have been fabricated from a range of commercially-available chemical vapour deposition (CVD) diamond. They have been packaged and tested in a clinical environment, using clinical apparatus and following clinical procedures: 6 MV linear accelerator, solid water phantom, dosimeter. Some devices exhibited…
The generalized gradient approximation （GGA） based on density functional theory（DFT）is used to analyze the structure, bonding and magnetic properties of the transition metal atom doped endohedral fullerene Ni@C20H20. The geometric optimization shows that the Ni atoms situated at the three possible positions off the ca…
This work is part of the European Clearinghouse on Nuclear Power Plant Operational Experience Feedback (NPP-OEF) activity carried out at the Joint Research Centre/Institute for Energy (JRC/IE) with the participation of nine EU Regulatory Authorities. It investigates the 1999 Shika-1 criticality event together with oth…
This project is a theoretical and experimental study of the oxidation kinetics of lead sulfide. Experimental intrinsic kinetic data applicable to the pre-ignition oxidation of lead sulfide particles has been undertaken to enable a better understanding of flash smelting processes through modelling. A thorough literatur…
Abstrak Beton mutu tinggi adalah beton dengan perlakuan khusus dan persyaratan yang seragam, disyaratkan terdapat kontrol terhadap pemilihan dan desain dari material penyusun beton dengan penambahan bahan tambah yang tepat. Penggunaan bahan tambah silica fume, fly ash dan serat baja pada beton mutu tinggi adalah dimak…
The shaft loaded blister test was used as an alternative method to develop three different tests to study the mechanical properties of polyvinyl alcohol (PVA) hydrogel on thin circular membranes and see how the number of freeze/thaw cycles used in their fabrication would affect the stiffness of the material. The first…
In this work we present a highly efficient and accurate analytical approximation for the Green's function of a polaron: the momentum average (MA) approximation. It is obtained by summing all of the self-energy diagrams, but with each diagram averaged over the momenta of its free propagators. The result becomes exact f…
This study was aimed at investigating the feasibility of co-culturing meniscus cells and synovium-derived stem cells on small intestinal submucosa (SIS) in order to establish an innovative method and further to optimize the culture conditions for engineering in vitro meniscus constructs. First, two groups of individua…
Investigations of fuel behaviour are carried out in close connection with experimental research operation feedback and computational analyses. In this connection, OECD NEA sets up the “public domain database on nuclear fuel performance experiments for the purpose of code development and validation – International Fuel…
The biogeochemical behavior of silica is closely linked to the carbon cycle as marine Si-based diatoms are a major control on the distribution of silica in oceans, and play a major role in controlling atmospheric pCO2 via the "biological pump." The importance of biological controls on silica cycling in the terrestrial…
This thesis concerns the first ever development of a variable spacing diffraction grating device created with the use of elastomeric surface waves. A variable spacing grating has the ability to deflect a laser beam to a continuous range of angles, thus allowing to steer the beam. This is achieved by diffracting an obl…
Solvent effects on 2,4-dinitrotoluene(2,4-DNT) molecule in different solvents(toluene,ethanol,and water) were studied via DFT PCM method at B3LYP/6-311+G(d,p) level. The influences of these solvents on the molecular structure,vibrational spectra,charge distribution,and dipole moment were studied as well. The results s…
Rice straw is naturally covered by a thin layer of aliphatic hydrocarbon and inorganic substances,which prevents urea formaldehyde(UF) resin from penetrating into straw body and producing strong adhesion.The change law of rice straw interfacial properties was revealed by treating the rice straw surface with oxygen col…
This thesis focuses on the chirality selective growth of Single-Walled Carbon Nanotube (SWCNT) in Chemical Vapor Deposition (CVD). SWCNT possesses exceptional properties which are (n,m) structure dependent. Preferential growth of SWCNTs with specific (n,m)
Two decades ago, it was found that gold is catalytically active as clusters although it is known to be inert as bulk material. In the work presented in this thesis, density functional theory calculations have been applied to show that the properties of gold clusters and small molecules, namely O2 and NO2, are di erent…
Tato diplomová práce je zaměřená na analýzu a sociologický průzkum vztahu PLA versus PET lahve a generálně se skládá ze dvou částí. V první části jsou popsány základní charakteristiky PLA a PET lahví, vývoj jejich spotřeby v ČR a v EU, a také legislativní problematika těchto dvou obalů, jakož i snaha o porovnání jejic…
In this project, we study the properties of all trivacancy configurations in face-centered cubic (FCC) and hexagonal close-packed (HCP) hard-sphere crystal models. 4 and 9 different trivacancy configurations were found for the FCC and HCP crystals respectively. Using a Widom particle insertion-deletion method in a MD…
We have studied time-dependent optical properties of individual gold nanoparticles of different shapes with 10-100 nm sizes. Besides a fast electronic response, we find a number of vibrational modes whose frequency and damping times give information about the nanoenvironment of the particle and its coupling to a solid…
Leno fabrics have interesting characteristics when compared to standard woven fabrics. The recently introduced needle leno technology offers opportunities for new leno fabric applications. Interesting fabric characteristics can be obtained especially when twin warp beams are used.
Uniaxial creep tests have been performed at 175 °C to study the influence of phosphorus, sulphur and grain size on the creep properties of oxygen free copper. Copper with no phosphorous content and ...