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Marutoiu C.,Babes - Bolyai University | Bratu I.,Romanian Institute of Isotopic And Molecular Technology | Nemes O.F.,Babes - Bolyai University | Dit I.-I.,Apahida parish | And 6 more authors.
Vibrational Spectroscopy | Year: 2017

The painting materials and wooden support of the Imperial Gates belonging to Apahida wooden church were investigated by XRF, Raman and FTIR spectroscopy. Lead minium and cinnabar are employed for red; traces of Prussian blue and smaltite for blue and green; lead carbonates, barium sulfate and zinc white for white; As2S3 for yellow. FTIR and XRD measurements confirm the wooden species as being fir. The wood conservation status was analyzed by FTIR spectroscopy, DSC and X-ray diffraction, confirming the increase of amorphous content with time; the oxalate presence was established by FTIR spectroscopy. The 3D model of Imperial Gates was recorded in order to preserve and restore these objects of cultural heritage. © 2017 Elsevier B.V.

Marutoiu C.,Babes - Bolyai University | Trofin M.,PFA Dragan Hlinca Dragos | Bratu I.,PFA Dragan Hlinca Dragos | Postolache D.,Science Danart SRL | And 3 more authors.
Revista de Chimie | Year: 2016

The wooden icon of Saint Nicholas, painted in the second half of the nineteen century, comes from the southern part of Transylvania province and was investigated by XRF and FTIR spectroscopy in order to preserve and restore it. The obtained results confirmed that this icon was painted in the historical period already mentioned. Also, the aim of this paper was to assess the conservation state of the wooden support and the painting materials used for this icon.

Levei E.,INCDO INOE 2000 Research Institute for Analytical Instrumentation | Senila M.,INCDO INOE 2000 Research Institute for Analytical Instrumentation | Miclean M.,INCDO INOE 2000 Research Institute for Analytical Instrumentation | Abraham B.,INCDO INOE 2000 Research Institute for Analytical Instrumentation | And 3 more authors.
Environmental Engineering and Management Journal | Year: 2011

Water quality in the Aries River catchment (NW Romania) in the vicinity of Rosia Poieni and Rosia Montana mining areas was investigated. This study included the determination of pH, EC, dissolved trace metals (Ni, Cu, Zn, Cd, Pb, Mn), major cations (Na, K, Ca, Mg, Fe), chloride, nitrate and sulfate concentration in waters sampled from the Aries River and its tributaries (Abrud River and Musca and Sesei rivulets) that drains the mining area. In the studied area, pollution derived primarily from nonferrous and precious metal mine tailings deposited near the water courses. Although high metals and sulfates concentrations were found in the Sesei and Musca rivulets, due to the low flow rate of these tributaries, in the Aries River significant increases were found only for Mn, Cu, Fe and sulfate while for the other metals a moderate increase was observed.

Furtos G.,Raluca Ripan Institute of Research in Chemistry | Furtos G.,Babes - Bolyai University | Tomoaia-Cotisel M.,Babes - Bolyai University | Garbo C.,Babes - Bolyai University | And 4 more authors.
Particulate Science and Technology | Year: 2013

Although total joint replacement surgery has become common in recent years, problems due to bacterial infection remain a significant complication following this procedure. One approach in our study was to obtain a self-cured bone cement based on hydroxyapatite with nanosilver (Hap-Ag) and ZrO2 and polymer matrix based on 2,2-bis[4-(2-hydroxy-3-methacryloyloxypropoxy)-phenyl] propane/triethyleneglycol dimethacrylate. New materials were tested for: in vitro silver release, compressive strength (CS), compressive modulus (CM), and radiopacity. In vitro silver release increased in time and depended of silver content in cement. The highest silver release was registered for the cement with 1.26 wt% silver content. The results reveal that the CS for bone cement was between 133.37 and 146.70 MPa and CM was between 1.68 and 1.82 GPa (p > 0.05). A slow increasing of CM was registered for samples with 1.5/1 powder/liquid ratio. Addition of nanosilver and ZrO2 increased radiopacity of experimental bone cement. © 2013 Copyright Taylor and Francis Group, LLC.

Marutoiu C.,Babes - Bolyai University | Bratu I.,Romanian Institute of Isotopic And Molecular Technology | Budu A.M.,Al. I. Cuza University | Santa G.,Babes - Bolyai University | And 5 more authors.
Revista de Chimie | Year: 2015

In order to preserve and restore the Imperial Gates belonging to the wooden church of Aşchileu Mic, Cluj County, the scientific expertise of the wooden support and of the painting materials (ground, pigments) with FTIR, XRF spectroscopy and DSC thermal analysis was performed. FTIR spectroscopy and DSC methods offer information about the wooden support whereas XRF and FTIR methods were employed for painting materials structural characterization. These structural data can be correlated with the artistic, theological and historical analysis of this religious patrimony object. After obtaining information about wooden support and painting materials the Imperial Gates were 3D digitized using state of the art laser scanning technology. The digital 3D model obtained was restored in virtual environment and converted to an interactive 3D model which can be used for cultural heritage digital dissemination.

Mihali C.,Technical University of Cluj Napoca | Oprea G.,Technical University of Cluj Napoca | Michnea A.,Environmental Protection Agency Maramures | Jelea S.-G.,Technical University of Cluj Napoca | And 4 more authors.
Carpathian Journal of Earth and Environmental Sciences | Year: 2013

In order to assess the soil pollution level by heavy metals and also the possibility of metals entrance in the food chain via plants, pollution load index (PLI), contamination factors (CF) and soil to plant transfer factors (TF) were calculated. Topsoil samples (1-10 cm) and plants growing on them were collected from four areas in Baia Mare city and surroundings: three polluted areas (Ferneziu, Sǎsar and Center) and one reference area. The following heavy metals: Cu, Zn, Pb, Cd, Ni, Cr, Co, Mn, Sn were analyzed in soil and plant samples by inductively coupled plasma atomic emission spectrometry. The highest TF were obtained for Cd (0.66-3.13) while the lowest values were calculated for Pb (0.004-0.02). The contamination level of the soil within the investigated areas was assessed according to PLI values. Ferneziu district, where the lead smelter is located, was found being the most polluted site for Cd, Pb, Cu, Zn and Sn. Cluster analysis was conducted in order to classify metals of different sources and origins. Cd, Pb, Sn, Zn and Cu occur as a result of anthropogenic activities while Co, Cr, Mn and Ni in soil can be naturally found in the soil composition.

Marutoiua C.,Babes - Bolyai University | Troan L.,Ethnographic Museum of Transylvania | Toader V.-D.,Ethnographic Museum of Transylvania | Moldovan Z.,A-D Technologies | And 3 more authors.
Studia Universitatis Babes-Bolyai Chemia | Year: 2013

The processional flag is a cult object belonging to the churches. Nowadays, as well as it was in the past, the flag is carried by people, preceeding the religious processions; it is used on the occasion of bringing icons and holy relics from one place to another; the flag is also used at different ceremonial moments and at funerals. The Ethnographic Museum of Transylvania owns 10 processional flags in various conservation stages. Pigment samples were taken and we present the result of the samples expertise achieved by using the FTIR spectrometry, X-Ray diffraction, X-ray fluorescence and gas chromatography-mass spectrometry for the processional flag with the inventory number 8254. The results will be used to recommend several correct conservation and preservation methods.

Gog A.,Babes - Bolyai University | Gog A.,INCDO INOE 2000 Research Institute for Analytical Instrumentation | Roman M.,INCDO INOE 2000 Research Institute for Analytical Instrumentation | Tosa M.,Babes - Bolyai University | And 2 more authors.
Renewable Energy | Year: 2012

Biodiesel has attracted considerable interest in recent years as an alternative, biodegradable and nonpolluting transportation fuel. Conventional alkaline process for biodiesel production are energy-consuming and generate undesirable by-products such as soaps, that make difficult the separation and purification of biodiesel.Particular attention has been dedicated to the use of lipases as biocatalysts for biodiesel production due to their favorable conversion rate obtained in gentle conditions and relatively simple downstream processing steps for the purification of biodiesel and by-products. However, comparatively to conventional chemical processes, the major obstacles for enzymatic production of biodiesel remain the cost of lipases, the relatively slower reaction rate and lipases inactivation caused by methanol and glycerol.This review evaluates the current status and perspectives for enzymatic biodiesel production and indicates the key operational variables that influence lipase activity and stability together with the technological solutions for industrial implementation of enzymatic process. © 2011 Elsevier Ltd.

Levei E.,INCDO INOE 2000 Research Institute for Analytical Instrumentation | Roman M.,INCDO INOE 2000 Research Institute for Analytical Instrumentation | Miclean M.,INCDO INOE 2000 Research Institute for Analytical Instrumentation | Borodi G.,Romanian Institute of Isotopic And Molecular Technology | Senila M.,INCDO INOE 2000 Research Institute for Analytical Instrumentation
Carpathian Journal of Earth and Environmental Sciences | Year: 2013

To predict the acid mine drainage potential of tailings from Baia Mare (Bozanta and Sasar) and Southern Apuseni (Ribita and Mialu) mining areas, acid base accounting test, pH, sulphur, total carbon and metal contents of wastes were determined. The results revealed high Cu, Pb, Zn, Cd, As, Fe concentrations in all studied tailings. The highest metal concentrations were determined in the Bozanta tailing impoundment. The net neutralization potential and neutralization potential ratio revealed that tailings stored in the Mialu, Sasar and Bozanta impoundments are possible acid mine drainage sources and thus can pose contamination risk for the environment. The tailings from Ribita deposit have low sulphur content and high neutralization potential and thus very low acid mine drainage potential.

PubMed | INCDO INOE 2000 Research Institute for Analytical Instrumentation
Type: Journal Article | Journal: Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering | Year: 2012

The mercury (Hg) concentrations were evaluated in soils and perennial plants sampled in four districts of Baia Mare city, a historical mining and ore processing center in Northwestern Romania. The results showed that the Hg concentration exceeded the guideline value of 1.0 mg kg(-1) dry weight (dw) established by the Romanian Legislation, in 24 % of the analyzed soil samples, while the median Hg concentration (0.70 mg kg(-1) dw) was lower than the guideline value. However, Hg content in soil was generally higher than typical values in soils from residential and agricultural areas of the cities all over the world. The median Hg concentration was 0.22 mg kg(-1) dw in the perennial plants, and exceeded the maximum level of Hg (0.10 mg kg(-1)) established by European Directive 2002/32/EC for plants used in animal feed in order to prevent its transfer and further accumulation in the higher levels of food chain. No significant correlations were found between soil Hg and other analyzed metals (Cd, Cu, Pb, Zn) resulted from the non-ferrous smelting activities, probably due to the different physicochemical properties, that led to different dispersion patterns.

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