Search for dissertations about: "resolution dependence"

Showing result 1 - 5 of 110 swedish dissertations containing the words resolution dependence.

2. 1. Neural limits of visual resolution

   Author : Zoran Popovic; Göteborgs universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; cell separation; cortical magnification; detection; estimated receptive field; high-pass filtered optotypes; nyquist limit; psychophysics; resolution; ganglion cells;

   Abstract : Aims: The aim of this thesis was to formulate a model of retinal neural circuitry in humans based on morphological estimates of retinal cone and ganglion cell populations, to compare results based on this model to psychophysical measurements of visual resolution and identify the retinal neural factors that limit visual resolution.Materials & Methods: Total displacement of central ganglion cells from foveal cones was obtained by estimating the length of fibers of Henle in four human retinas along the nasal or vertical hemi-meridians. READ MORE

4. 2. Mechanistic studies of localized corrosion of Al alloys by high resolution in-situ and ex-situ probing techniques

   Author : Ali Davoodi; Jinshan Pan; Gerald S. Frankel; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; localized corrosion; pitting; aluminum alloy; intermetallic particle; Volta potential; cathodic activity; micro-galvanic effect; size dependence; SKPFM; in-situ AFM; integrated AFM SECM; numerical simulation; micrometer resolution; EIS.; Chemistry; Kemi;

   Abstract : A multi-analytical approach based on in-situ and ex-situ local probing techniques was employed to investigate localized corrosion mechanisms of some aluminum alloys in chloride containing solutions, focusing on the influence of intermetallic particles (IMPs) in the alloys. In the EN AW-3003 alloy, SEM-EDS analysis revealed constituent and dispersoid IMPs. READ MORE

5. 3. Organocatalytic Acylation for the Kinetic Resolution of Secondary Aryl Alcohols : Synthetic Applications and Mechanistic Studies

   Author : Laura Mesas Sánchez; Peter Dinér; Pavel Kočovský; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; kinetic resolution; organocatalysis; secondary alcohols; reaction progress kinetic analysis; Chemistry with specialization in Organic Chemistry; Kemi med inriktning mot organisk kemi;

   Abstract : The research described in this thesis focuses on the catalytic acylative kinetic resolution (KR) of aromatic secondary alcohols, using a planar-chiral 4-(dimethylamino)pyridine (DMAP) organocatalyst.In the first part of this thesis, the substrate scope of the above mentioned process was expanded to aromatic secondary alcohols that contain an extra functional group in the alkyl moiety, such as 1,2-azido alcohols, 2-hydroxy-2-aryl-ethylphosphonates and 2-hydroxy-2-aryl esters. READ MORE

6. 4. Continuum modeling of particle flows in high shear granulation

   Author : Per Abrahamsson; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; High shear granulation; parameter study; resolution dependence; continuum modeling; kinetic theory of granular flow; granular flow;

   Abstract : High shear granulation is an important process in the pharmaceutical industry. The aim of the process is to produce granules with specific properties, like size and hardness, from powder mixtures. The properties of the granules are determined by the flow field in the mixer. READ MORE

7. 5. Continuum modelling of particle flows in high shear granulation

   Author : Per Abrahamsson; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; parameter study; High shear granulation; continuum modelling; resolution dependence; granular flow; compartment model; kinetic theory of granular flow;

   Abstract : High shear granulation is an important process in the pharmaceutical industry. The aim of the process is to produce granules with specific properties, like size and hardness, from powder mixtures. The properties of the granules are determined by the flow field in the mixer. READ MORE