Science Projects, Dissertation, Thesis, Working Papers, Science Research Papers, Cases, Resources, Examples and Information

Examination of the Thermal Decomposition of Chrysotile

Project on Thermal Decomposition of Chrysotile. The splitting of pure chrysotile from Thetford, Quebec warmed up at constant temperature in air from 200-1000°C for 4 to 720 hrs has been investigated by making use of X-ray diffraction and optical microscopy methods. No morphological modifications had been observed optically below 450ºC and 24 hours, although X-ray diffraction data advise that chrysotile degrades then recrystallizes below 450°C.

Apoptosis Regulation via the Mitochondrial Pathway: Membrane Response upon Apoptotic Stimuli

The aim of this thesis (Apoptosis Regulation via the Mitochondrial Pathway: Membrane Response upon Apoptotic Stimuli) was the investigation of the mitochondrial response mechanisms upon apoptotic stimuli. The specific objectives were the biophysical characterization of membrane dynamics and the specific roles of

Fluorescence studies of complex systems: organisation of biomolecules

The homo and hetero dimerisation of two spectroscopically different chromophores were studied, namely: 4,4-difluoro-4-bora-3a,4a-diazas-indacene (g-BODIPY) and its 5-styryl-derivative (r-BODIPY). Various spectroscopic properties of the r-BODIPY in different common solvents were determined. It was shown that g- and r-BODIPY in the ground state

Physiology and Genetics of Acidithiobacillus species: Applications for Biomining

Bacteria from the genus Acidithiobacillus are often associated with biominingand acid mine drainage. Biomining utilises acidophilic, sulphur and ironoxidising microorganisms for recovery of metals from sulphidic low grade oresand concentrates. Acid mine drainage results in acidification and contaminationwith metals of soil and

Studies on the formation, composition and detection of biofilms of food-borne pathogens

Biofilms enable food-borne pathogens to resist removal from surfaces and survive disinfection. Biofilms of pathogens [e.g., S. enterica Serovar Typhimurium DT104 (STDT104)] formed on various surface types were probed with Calcofluor (b-D-glucan-specific ) and lectins… Contents Chapter 1: FOOD-BORNE PATHOGENS AND BIOFILMS

An experimental study of silver partitioning in sulfide-oxide-melt systems at 800 degrees C

Silver solubility, and partitioning of silver between pyrrhotite and magnetite at a(Ag) = 0.13 ± 0.04 (1σ) has been determined at 800°C, and a range of fS2 between -4.06 and -0.18 and fO2 between -14.90 and -11.62 …. Contents Chapter 1: Background

The ecological significance of sexual reproduction in peat mosses (Sphagnum)

This thesis describes the target selection, cloning, expression, purification, crystallization, structure and biochemical characterization of five essential Mycobacterium tuberculosis (Mtb) proteins. The search for drugs against the causal agent of tuberculosis is urgently needed and the targeting of essential genes is necessary

Forming Binary Near-Earth Asteroids From Tidal Disruptions

We present simulations and observations as part of a model of the binary near-Earth asteroid population. The study of binary asteroid formation includes a series of simulations of near-Earth asteroid (NEA) tidal disruption… Contents 1 Introduction 1.1 Scientiﬁc Motivation 1.1.1 Why binary

Mueller matrix ellipsometry on advanced nanostructures

Ellipsometry is an optical technique used for studies of thin films and surfaces. The technique is based on measurement and analysis of the changes in the state of polarization that occur when polarized light is reflected on a sample surface. The multichannel

Open midplane designs based on sector coils in superconducting dipole magnets

For some cases of lattice layout in particle accelerators, the major part of the energy deposition coming from the collision is located in the midplane of the magnets. The heat produced might result in a quench in superconducting magnets. One solution for