Search results for "restoration"
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Konstantīna Čakstes piemiņas plāksnes atklāšanas fotogrāfija
2023
Rakstā tiek skaidrota LU prof. Konstantīna Čakstes piemiņas tradīcijas uzsākšana LU, skaidrojot tā cēloņus (K. Čakstes kapavietas atklāšana), norisi (K. Čakstes piemiņas plāksnes atklāšana) un sekas (K. Čakstes piemiņas kopšana un tā labums LU Muzejam kā pētnieciskai atmiņu institūcija). Par raksta pamatu izvēlēta vēsturiska fotogrāfija, kurā attēlota K. Čakstes piemiņas plāksnes atklāšana, taču izmantots arī citu avotu un literatūras klāsts raksta sagatavošanā. Raksts sagatavots Latvijas valsts un LU 105 gadu jubileju ietvaros, kas mijas kopā ar pašreizējo starptautisko spriedzi - Krievijas-Ukrainas kara eskalāciju.
1992. gada I semestra Latvijas Prezidiju konventa sēdes 25. protokols
1992
25th protocol of the 1992 1st semester session of the Presidium Convent reconstituted in Latvia, describing the renewal of student fraternities during the restoration of the Latvia's independence from the USSR, the Latvian student fraternity Fraternitas Lettica assuming the leadership of the Latvian Presidium Convent and its tasks during the quarter of the 1992 1st semester.
1992. gada I semestra Latvijas Prezidiju konventa sēdes 26. protokols
1992
26th protocol of the 1992 1st semester Presidium Convent, describing the approval of 25th protocol, reports of officials, denationalisation of student fraternity property, organisation of the Latvian Union of Filister Societies and voting rights at meetings of the Presidium Convent.
Explicit Algorithms for a New Time Dependent Model Based on Level Set Motion for Nonlinear Deblurring and Noise Removal
2000
In this paper we formulate a time dependent model to approximate the solution to the nonlinear total variation optimization problem for deblurring and noise removal introduced by Rudin and Osher [ Total variation based image restoration with free local constraints, in Proceedings IEEE Internat. Conf. Imag. Proc., IEEE Press, Piscataway, NJ, (1994), pp. 31--35] and Rudin, Osher, and Fatemi [ Phys. D, 60 (1992), pp. 259--268], respectively. Our model is based on level set motion whose steady state is quickly reached by means of an explicit procedure based on Roe's scheme [ J. Comput. Phys., 43 (1981), pp. 357--372], used in fluid dynamics. We show numerical evidence of the speed of resolution…
Il restauro delle architetture liberty a Mondello: studi e indagini nel Villino Maria Ida
2010
Il poster è dedicato al restauro delle ville liberty a Mondello, che presentano delle caratteristiche architettoniche peculiari, sia strutturali che materiche. Molte di esse sono rivestite con l'intonaco di pietra artificiale, che richiede specifiche tecniche di diagnosi e restauro. The poster is dedicated to the restoration of liberty villas in Mondello, that show distinctive architectural features, both structural and materials. Many of them are coated with artificial stone plaster, which requires specific diagnostic and restoration techniques.
Use of Anesthetics Associated to Vasoconstrictors for Dentistry in Patients With Cardiopathies. Review of the Literature Published in the Last Decade
2012
Objective: The use of local anesthetics associated to vasoconstrictor agents in dentistry is thoroughly justified and is widely extended, but we cannot ignore the fact that anesthetic infiltration poses risk of complications throughout the dental treatment period. The objective of the present review is to document the reported effects the use of the local anesthetics most widely employed in dentistry, with or without association to vasoconstrictor agents may have in patients with any sort of cardiopathy. Study Design: We have searched for randomized clinical trials on the assessment of the cardiovascular effects of local anesthetics used in dentistry, without limits as regards age or sex, c…
Effect of 15% carbamide peroxide bleaching gel on color stability of giomer and microfilled composite resin: an in vitro comparison
2011
Objectives: The effect of 15% carbamide peroxide bleaching gel on color stability and surface topography of a giomer and a microfilled composite resin was evaluated in the present in vitro study. Study design: Forty discs measuring 10 mm in diameter and 1 mm in thickness were prepared from a giomer and a microfilled composite resin. Each material yielded 20 discs with completely smooth surfaces. Then a spectrophotometer was used to measure L* (lightness), a* (redness, greenness) and b* (blueness, yellowness) color coordinates of all the discs. Subsequently, the specimens were subjected to 15% carbamide peroxide bleaching gel. After measuring the color coordinates once again, color changes (…
A Nonlinear Primal-Dual Method for Total Variation-Based Image Restoration
1999
We present a new method for solving total variation (TV) minimization problems in image restoration. The main idea is to remove some of the singularity caused by the nondifferentiability of the quantity $|\nabla u|$ in the definition of the TV-norm before we apply a linearization technique such as Newton's method. This is accomplished by introducing an additional variable for the flux quantity appearing in the gradient of the objective function, which can be interpreted as the normal vector to the level sets of the image u. Our method can be viewed as a primal-dual method as proposed by Conn and Overton [ A Primal-Dual Interior Point Method for Minimizing a Sum of Euclidean Norms, preprint,…
Restoration of the Northeast cloister of the Convento de la Compañía de Jesús in Antigua, Guatemala
1998
[EN] The extraordinary history of the foundation, destruction and survival of La Antigua in Guatemala, a city frozen in time over two centuries ago, is the background for the introduction of the history of the Convento de la CompañÌa de Jesús and its northeast cloister, which has recently been restored and whose surrounding buildings have been refurbished to house the headquarters of the Institute of Ibero-American Cooperation in the city.
Responses of Lumbriculus variegatus to Activated Carbon Amendments in Uncontaminated Sediments
2012
Activated carbon (AC) amendment is a recently developed sediment remediation method. The strong hydrophobic organic contaminant sorption efficiency of AC has been shown in several studies, but effects on benthic organisms require more investigation. The AC induced effects on egestion rate, growth and reproduction of Lumbriculus variegatus were studied by applying bituminous coal based AC in three different particle size fractions, namely <63 μm (90%, AC(p)), 63-200 μm (AC(m)) and 1000 μm (AC(g)), to natural uncontaminated (HS) and artificial sediment (AS). Egestion rate, growth and reproduction decreased with increasing AC concentration and finer AC particle fractions, effects being stronge…