Search results for " PRIN"
showing 10 items of 1809 documents
Measuring corneal clouding in patients suffering from mucopolysaccharidosis with the Pentacam densitometry programme
2013
Aim To identify a means to objectively measure corneal clouding in patients with mucopolysaccharidosis in a prospective controlled clinical trial. Methods Corneal haze was assessed by slit lamp examination and measured using the densitometry programme of the Pentacam, a rotating Scheimpflug camera in 33 mucopolysaccharidoses (MPS) patients and 32 controls. Results Pentacam measurements were available in 31 right and 31 left eyes of 32 patients and in 32 left and right eyes of 32 subjects in the control group. Slit lamp findings correlated very well with corneal density measurements (Spearman correlation right eye (OD)/left eye (OS)=0.782/0.791). MPS patients had higher density units (median…
Changes in anterior chamber eye during accommodation as assessed using a Dual Scheimpflug system
2014
Purpose: To study the changes in anterior chamber depth (ACD), anterior chamber angle (ACA), and pupil diameter (PD) during accommodation. Methods: Eighty eyes of 80 subjects, aged 22 to 40 years, were included. The rotating Dual Scheimpflug and a Placido disc system (Galilei G4, Ziemer Ophthalmic Systems AG, Switzerland) was used to measure the changes in ACD, ACA, and PD during accommodation. ACD measurement was taken for the central zone and for 4 more positions, each in different orientation (nasal, superior, temporal and inferior), 4 mm away from the centre. ACA was measured for the whole eye as well for the nasal, superior, temporal, and inferior quadrants. These metrics were obtained…
Scheimpflug biometry of the anterior segment after implantation of foldable iris-fixated lenses.
2006
ABSTRACT PURPOSE: To evaluate intraocular dimensions of the anterior segment of myopic phakic eyes after implantation of foldable iris-fixated lenses. METHODS: Seventeen myopic eyes that received a foldable iris-fixated phakic intraocular lens (PIOL) were assessed. Distances between the cornea and the IOLoptic edge and between the IOL optic and the crystalline lens were evaluated using Scheimpf lug photography 3 months postoperatively. RESULTS: The average postoperative distance between the central corneal endothelium and the anterior surface of the IOL was 2.01±0.26 mm. The distance between the corneal endothelium and the peripheral edge of the IOL averaged 1.32±0.18 mm at the 12 o'clock p…
Changes in the anterior chamber during accommodation assessed with a Scheimpflug system.
2014
Purpose To study changes in the anterior chamber depth (ACD), anterior chamber angle, and pupil diameter with accommodation. Setting University of Valencia, Valencia, Spain. Design Evaluation of diagnostic technology. Methods A rotating Scheimpflug camera (Pentacam HR) was used to measure changes in the ACD, anterior chamber angle, and pupil diameter with accommodation. Peripheral ACD was measured at the corneal center and 2.0 mm away from it in the nasal, superior, temporal, and inferior directions. The anterior chamber angle was computed as the mean anterior chamber angle of the entire eye. All measurements were obtained with accommodation stimuli ranging from +1.0 to −4.0 diopters (D) in…
Peripheral corneal thickness and associated factors - results from the population-based German Gutenberg Health Study.
2021
PURPOSE Changes in peripheral corneal thickness are described in various corneal diseases such as corneal ectasia. However, few data exist describing the increase in corneal thickness from central to peripheral and reporting the normal distribution of corneal thickness in rings around the corneal centre. The aim of this study was to report these cornea characteristics and investigate associated factors in a population-based setting. METHODS The Gutenberg Health Study is a prospective, population-based study examining participants in a 5-year follow-up (age range 40-80 years) using Scheimpflug imaging. Corneal thickness was assessed in each participant at the apex, as well as in the corneal …
Sacīkstes princips civilprocesā
2018
Maģistra darba nosaukums ir "Sacīkstes princips civilprocesā". Sacīkstes princips ir viens no civilprocesa pamatprincipiem, proti, puses savas procesuālās tiesības īsteno sacīkstes formā, un tiesa lietu izspriež, vadoties no pušu iesniegtajiem pierādījumiem un izteiktajiem argumentiem. Sacīkstes princips ir pieskaitāms pie civilprocesa kopējiem jeb vispārējiem principiem, kura uzdevums ir nodrošināt likumības un līdztiesības ievērošanu nolēmumu pieņemšanas procesā, vienlaikus garantējot tiesneša neitralitāti un objektivitāti. Maģistra darba mērķis ir noskaidrot sacīkstes principa būtību un nepieciešamību civilprocesuālajās attiecībās, kā arī izpētīt Civilprocesa likuma 93. panta ceturtās da…
Hydroxo Hydrido Complexes of Iron and Cobalt (Sn−Fe−Sn, Sn−Co−Sn): Probing Agostic Sn⋅⋅⋅H−M Interactions in Solution and in the Solid State
2000
Bis(toluene)iron 9 reacts with Lappert's stannylene [Sn[CH(SiMe3)2]2] (4) to form the paramagnetic bis-stannylene complex [[(eta6-toluene)Fe-Sn-[CH(SiMe3)2]2]2] (10). Compound 10 reacts with H2O to form the hydroxo hydrido complex [(eta6-C7H8)(mu-OH)(H)-Fe-[Sn[CH(SiMe3)2]2]2] (12) in high yield; its solid-state structure has been elucidated by X-ray and neutron diffraction analysis. In agreement with the 1H NMR results, 12 contains a hydridic ligand whose exact coordination geometry could be determined by neutron diffraction. The 1H and 119Sn NMR analysis of 12 suggested a multicenter Sn/Sn/H/Fe bonding interaction in solution, based on significantly large values of J(Sn,H,Fe) = 640+/-30 Hz…
Air quality assessment via functional principal component analysis
2009
The knowledge of the global urban air quality situation represents the first step to face air pollution issues. For the last decades many urban areas can rely on a monitoring network, recording hourly data for the main pollutants. Such data need to be aggregated according to different dimensions, such as time, space and type of pollutant, in order to provide a synthetic air quality index which takes into account interactions among pollutants and correlation among monitoring sites.This paper focuses on Functional Principal Component techniques for the statistical analysis of a set of environmental data x(spt), where s stands for the monitoring site, p for the pollutant and t for time, usuall…
Akadēmiskās paukošanās ekipējums
2021
Rakstā analizēta akadēmiskās paukošanās nozīme studentu korporāciju vidē, skaidrojot tās vēsturi un ideoloģisko nozīmi godu lietu risināšanā. Raksts ir balstīts uz 2021. gada decembra mēneša priekšmetu - Latviešu studentu korporācijas Fraternitas Cursica akadēmiskās paukošanās inventāru, kas pastāvīgi glabājās LU Muzeja krājumā vairāk kā 10 gadus. Tiek skaidrots arī, ka akadēmiskā paukošanās ir sporta veids, kas izpaužās ar akadēmiskās paukošanās turnīru organizēšanu studentu korporāciju starpā Latvijā un visā Baltijā.
Ieskats akadēmiskās paukošanās nodarbībā
2021
Video uzņemts 2021. gada decembra mēneša priekšmeta "Akadēmiskās paukošanās inventārs" ietvaros, lai iepazīstinātu interesentus, kā strādā akadēmiskā paukošanās praksē. Latviešu studentu korporācija Latvia sniedza atbalstu LU Muzejam video uzņemšanā, piesaistot aktīvākos un labākos paukotājus.