Experimental Model for Retrospective Assessment of X-Ray Exposures in Dento-Maxillary Radiology Measured by Electron Paramagnetic Resonance in Tooth Enamel

Electron paramagnetic resonance (EPR) dosimetry of human tooth enamel has been widely used in measuring radiation doses in various scenarios. For experimental purposes in X-ray diagnostic or therapy human persons can not be involved. For such cases we have developed an EPR dosimetry technique making use of enamel of molars extracted from pigs. The method can evaluate doses and dose-profiles of irradiated teeth at low level as 50 – 100 mGy (in air). EPR-spectra acquisition, data processing and dose assessment were done using non-dedicated equipment, devices and software

Diversity of maize pests and their damaging effect in an agroecosystem from the Western side of the country

Maize is one of the most important plants in the western side of Romania. During 2002-2005, the research carried out in untreated culture, in the Experimental Field from Jimbolia (Timiş County) pointed out the presence of many damaging species. The most important damaging species concerning the attacked percentage were: Tanymechus dillaticolis (47-69.5%), adults of Diabrotica virgifera virgifera (34.6- 40.33%), Oulema melanopa (27.9 - 32.5%), Opatrum sabulosum (17.5- 31.0%), Ostrinia nubilalis (18.87-25.5%) and Aphis maidis (7.13-16.6%). Larvae of Diabrotica virgifera virgifera caused characteristically stalk bending in 4.42-11.08% plants from all the investigated plants. The presence of these pests caused significantly yield decrease

Therapeutical protocol in otitis seromucosa

Introduction. In the first part of the paper, the authors propose to systematize the data from the literature on seromucous otitis. Material and methods. We performed a retrospective clinical study, starting from the premise that there are 3 therapeutic trends for children with chronic seromucous otitis in medical practice. A first group includes children who only underwent adenoidectomy, the second who underwent adenoidectomy and myringotomy and the third group who underwent adenoidectomy and the installation of a trans- tympanic drainage tube. The results were compared, and a new therapeutic protocol regarding the pediatric patients with chronic seromucous otitis comes as a final conclusion

ECO-FRIENDLY SOLUTIONS FOR POLLUTION PREVENTION AND TEXTILE WASTEWATER TREATMENT

The effluents resulted from the textile finishing generate the following pollution problems for the environment: concentration of pollutants in the discharged wastewater that leads to an increase of the main wastewater quality indicators: pH, matters in suspension, COD, BOD, chloride, sulphide, detergents, nitrogen; pollution of groundwater by a concentration of polluting minerals; pollution of soil in the area where textile and leather companies operate; pollution of natural receptors and the compelling of riverside industries to search for other clean water sources; persistence of dyes that are difficult to degrade in the natural receptors; impact on aquatic flora and fauna; decrease in photosynthesis due to water coloration; pollution of ground waters with dissolved solid substances; increase of alkalinity and of the content of mineral, organic substances and of soluble substances. All these problems can be minimized by adopting preventive measures and by pollution monitoring. Both pollution prevention solutions and new environmental technologies applied in the finishing textile processes are presented in this paper. There have been realized comparative studies between the conventional technologies, ecological technologies of textile finishing and advanced treatment technologies of wastewater. The impact of these technologies on the quality of wastewater has been studied with the demonstration of efficiency, through: decreasing of the amount of indicators, cost cutting of the treatment for each m3 of water, decreasing of the sludge quantity

Chitosan-Based Materials Featuring Multiscale Anisotropy for Wider Tissue Engineering Applications

We designed graphene oxide composites with increased morphological and structural variability using fatty acid-coupled polysaccharide co-polymer as the continuous phase. The matrix was synthesized by N, O-acylation of chitosan with palmitic and lauric acid. The obtained co-polymer was crosslinked with genipin and composited with graphene oxide. FTIR spectra highlighted the modification and multi-components interaction. DLS, SEM, and contact angle tests demonstrated that the conjugation of hydrophobic molecules to chitosan increased surface roughness and hydrophilicity, since it triggered a core-shell macromolecular structuration. Nanoindentation revealed a notable durotaxis gradient due to chitosan/fatty acid self-organization and graphene sheet embedment. The composited building blocks with graphene oxide were more stable during in vitro enzymatic degradation tests and swelled less. In vitro viability, cytotoxicity, and inflammatory response tests yielded promising results, and the protein adsorption test demonstrated potential antifouling efficacy. The robust and stable substrates with heterogeneous architecture we developed show promise in biomedical applications

Research and Science Today No. 2(4)/2012

RESEARCH AND SCIENCE TODAY is a biannual science journal established in 2011. The journal is an informational platform that publishes assessment articles and the results of various scientific research carried out by academics. We provide the authors with the opportunity to create and/or perfect their science writing skills. Thus, each issue of the journal (two per year and at least two supplements) will contain professional articles from any academic field, authored by domestic and international academics. The goal of this journal is to pass on relevant information to undergraduate, graduate, and post-graduate students as well as to fellow academics and researchers; the topics covered are unlimited, considering its multi-disciplinary profile. Regarding the national and international visibility of Research and Science Today, it is indexed in over 30 international databases (IDB) and is present in over 200 online libraries and catalogues; therefore, anybody can easily consult the articles featured in each issue by accessing the databases or simply the website

Research and Science Today No. 1(5)/2013

RESEARCH AND SCIENCE TODAY is a biannual science journal established in 2011. The journal is an informational platform that publishes assessment articles and the results of various scientific research carried out by academics. We provide the authors with the opportunity to create and/or perfect their science writing skills. Thus, each issue of the journal (two per year and at least two supplements) will contain professional articles from any academic field, authored by domestic and international academics. The goal of this journal is to pass on relevant information to undergraduate, graduate, and post-graduate students as well as to fellow academics and researchers; the topics covered are unlimited, considering its multi-disciplinary profile. Regarding the national and international visibility of Research and Science Today, it is indexed in over 30 international databases (IDB) and is present in over 200 online libraries and catalogues; therefore, anybody can easily consult the articles featured in each issue by accessing the databases or simply the website

Track Reconstruction with Cosmic Ray Data at the Tracker Integration Facility

The subsystems of the CMS silicon strip tracker were integrated and commissioned at the Tracker Integration Facility (TIF) in the period from November 2006 to July 2007. As part of the commissioning, large samples of cosmic ray data were recorded under various running conditions in the absence of a magnetic field. Cosmic rays detected by scintillation counters were used to trigger the readout of up to 15\,\% of the final silicon strip detector, and over 4.7~million events were recorded. This document describes the cosmic track reconstruction and presents results on the performance of track and hit reconstruction as from dedicated analyses