Search results for " Stone"
showing 10 items of 160 documents
Measure of a limestone weathering degree using Laser Scanner.
2013
The weathering degree of the building materials and natural stones is generally quantified as the decrement of some mechanical features that can be measured experimentally by means of compressive tests or point load tests in the laboratory or Schmidt hammer tests carried out in situ. Such destructive or damaging tests are unacceptable in case of cultural heritage since even small amounts of damage must be avoided. This work shows a correlation between Schmidt hammer rebound values and the reflectivity that is detected by means of terrestrial scanner laser; therefore it allows assessing the weathering degree of buildings or stones in situ. The results demonstrate that such an investigation c…
Latvijas Vēstures Institūta Žurnāls: 2019, Nr. 1 (109)
2019
Žurnāls sagatavots LU Akadēmiskās attīstības projekta “Zinātniskā periodiskā izdevuma “Latvijas Vēstures Institūta Žurnāls” sagatavošana un izdošana 2019. gadā” (vad. Dr. hist. Kristīne Ante) ietvaros.
Il design nelle produzioni in pietra lavica dell’Etna. Processi naturali, artificiali, culturali
2018
Il testo indaga il progetto di elementi e oggetti in pietra lavica, che declina il carattere di “preziosità” di un materiale connotato da una forte identità territoriale e versatilità nell’uso. In particolare, di alcune produzioni in lava si vuole esplorare la capacità comunicativa ed evocativa rispetto al “paesaggio culturale” del Monte Etna, indicato dall’UNESCO come “uno dei più attivi vulcani iconici del mondo e uno straordinario esempio di processi geologici continui ”. Si analizzeranno alcune sperimentazioni che, pur esprimendo declinazioni del design diverse per modalità di produzione e fruizione condividono l’attenta considerazione degli originari processi di formazione del material…
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.
Kielitutkinto porttina Suomeen ja astinkivenä suomen kieleen
2017
Artikkelissa tarkastellaan inkerilaisten paluumuuttajien kasityksia kielitutkinnosta, joka heidan oli suoritettava saadakseen oleskeluluvan Suomeen niin sanotulla inkerilaisstatuksella. Kielitutkinto oli kaytossa vuosina 2003–2016. Tarkastelun kohteena ovat myos taman kielitutkinnon vaikutukset kielenopiskeluun. Aineistona ovat paluumuuttovalmennukseen osallistuneiden, tutkintoon valmistautuneiden henkiloiden (n = 97) vastaukset kyselyyn, jonka he tekivat ennen kielitutkinnon suorittamista. Aineistoa tarkastellaan sisallonanalyysin keinoin. Aineiston perusteella kielenoppijat tiesivat tutkinnon rakenteesta ja sen suorittamisesta tietokoneella. Suorittajat olivat hyvin tietoisia myos siita, …
Bolton's intermaxillary tooth size ratios among Iranian schoolchildren.
2010
Objectives: The aims of the present study were to determine anterior and total tooth-width ratios in a representative Iranian sample in Tabriz city and compare them with the Bolton standards. Study design: A total of 54 Iranian schoolchildren (12-14 years old) in Tabriz were examined. Alginate impressions were taken for subjects and poured by the dental stone. The mesiodistal widths of the teeth were measured using a digital caliper. The overall and anterior Bolton's intermaxillary tooth size ratios for each model pair was calculated. Results: There were no significant differences (p > 0.05) between the right and left sides of the dental arch and a symmetry in size exists. There were no sig…
Kidney Stones in Primary Hyperoxaluria: New Lessons Learnt
2013
To investigate potential differences in stone composition with regard to the type of Primary Hyperoxaluria (PH), and in relation to the patient’s medical therapy (treatment naïve patients versus those on preventive medication) we examined twelve kidney stones from ten PH I and six stones from four PH III patients. Unfortunately, no PH II stones were available for analysis. The study on this set of stones indicates a more diverse composition of PH stones than previously reported and a potential dynamic response of morphology and composition of calculi to treatment with crystallization inhibitors (citrate, magnesium) in PH I. Stones formed by PH I patients under treatment are more compact and…
Endoscopic papillary large balloon dilation in patients with large biliary stones and periampullary diverticula: Results of a multicentric series.
2018
Abstract Introduction Stone extraction represents the most frequent indication for endoscopic retrograde cholangiopancreatography (ERCP). Endoscopic papillary large balloon dilation (EPLBD) is a recent introduced approach consisting of an endoscopic papillary large balloon dilation following limited endoscopic sphyncterotomy (ES), which has been proven to be safe and effective for extraction of large common bile duct (CBD) stones. Peri-ampullary diverticula (PAD) are described in 10–20% of patients undergoing ERCP. Aim of our study is to evaluate efficacy and safety of EPLBD for the extraction of large biliary stones in patients with PAD. Methods The prospectively collected endoscopy databa…
Osteogenesis imperfecta: a clinical study of the first ten years of life.
1992
One hundred twenty-seven children with osteogenesis imperfecta (O.I.) were studied during the first 10 years of life. According to Sillence, 40 patients were assigned to type I, 39 to type III, and 48 to type IV O.I. Centiles for height, weight, and the annual number of fractures could be established for the different types of O.I. The development of the skeletal changes could be documented for the different forms of the disease. At birth, the skeletal changes were significantly more severe in type III than in type IV patients. During the first 10 years of life the number of fractures, extent of skeletal deformities, and growth retardation did not differ between types III and IV. Only fract…
The importance of potassium citrate and potassium bicarbonate in the treatment of uric acid renal stones
2017
Uric acid calculi can also be treated without surgery, with simple medical lytic therapy. After appropriate dietary adjustments and add of mineral water, the needed amount of alkali supplementation can increase pH values of the urine in order to dissolve the stones. Treatment should be prolonged to prevent stone recurrence. A case of bilateral renal uric acid stones that were successfully treated by alakalizing treatment was presented.