UMF Targu Mures

Târgu-Mureş, Romania

UMF Targu Mures

Târgu-Mureş, Romania

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Costescu A.,University of Bucharest | Karim K.,University of Bucharest | Moldovan M.,UMF Targu Mures | Spanulescu S.,University of Bucharest | Stoica C.,University of Bucharest
Journal of Physics B: Atomic, Molecular and Optical Physics | Year: 2011

Using the Coulomb-Green function method and considering the nonrelativistic limit for the two-photon S-matrix element, the right nonrelativistic 2s Rayleigh scattering amplitudes are obtained. Our result takes into account all multipoles, retardation and relativistic kinematics contributions, and the old dipole approximation result of Costescu [1] is retrieved as a limit case. The total photoeffect cross-section which is related to the imaginary part of the Rayleigh forward scattering amplitude through the optical theorem is also obtained. Our Coulombian formulae are used in the more realistic case of elastic scattering of photons by bound 1s and 2s electrons in ions and neutral atoms. Screening effects are considered in the independent particle approximation through the Hartree-Fock method. The effective charge Z eff is obtained by fitting the Hartree-Fock charge distribution by a Coulombian one. Good agreement (within 10%) is found when comparing the numerical predictions given by our nonrelativistic formulae with the full relativistic numerical results of Kissel [2] in the case of elastic scattering of photons by 1s and 2s electrons and Scofield [3] in the case of K-shell and 2s subshell photoionization for neutral atoms with 18 ≤ Z ≤ 92 and photon energies ω ≤ αZm. © 2011 IOP Publishing Ltd.


Jimborean G.,U.M.F. Targu Mures | Ianosi E.S.,U.M.F. Targu Mures | Aberle E.,Clinica de Pneumologie | Comes A.,Clinica de Pneumologie
Pneumologia | Year: 2012

Gastroesophageal reflux and bronchial asthma are frequently encountered comorbidities that maintain an ambivalent relationship, generating a vicious circle where gastroesophageal reflux increases asthmatic symptoms or precipitates bronchial asthma and asthma can trigger or worsen gastroesophageal reflux disease. Pathogenetic mechanisms of these interrelation are imperfectly understood, despite intense concerns of specialists in both areas. There have been incriminated: eso-bronchial constrictor vagal mediated reflexes, bronchial hyperreactivity, neurogenic inflammation induced by hydrochloric acid penetration in the oesofagus, airways hydrochloric acid microaspiration with asthmatic trigger effects, increased bronchial resistance or increased immune response to antigens. Bronchial obstruction and some antiasthmatic medication can decrease lower esophageal sphincter pressure and thus triggering or aggravating gastroesophageal reflux. The diagnosis of the gastroesophageal reflux in asthmatics involves a careful clinical exam, digestive functional test (up to 24 hours monitoring esophageal pH) and esogastroscopy. Gastroesophageal reflux treatment in asthmatic patients claims elimination of both disease risk factors, diet, proton-pump inhibitors.


Cerebral palsy describes a group of disorders affecting the development of movement and posture, causing activity limitation, and which are attributed to nonprogressive disturbances. Insults responsible for cerebral palsy are believed to have occurred during fetal development or infancy. Several observational studies have reported an association of antenatal treatment with magnesium sulfate for preterm labor or preeclampsia with a decreased risk of cerebral palsy in low birthweight or preterm infants. The evidence currently available does not make a clear clinical decision of whether or not to use magnesium for the prevention of cerebral palsy. It appears that despite well-designed and executed studies on this critically important topic in obstetrics, the answer to the question of whether evidence-based medicine supports the use of magnesium for neuroprophylaxis in preterm infants remains unclear. After a review of the complex literature on this topic, and the recent addition of this important piece of evidence, we discussed the evidence-based use of magnesium for prevention of cerebral palsy.


Suciu L.M.,UMF Targu Mures | Cucerea M.,UMF Targu Mures | Szab B.,UMF Targu Mures | Puscasiu L.,UMF Targu Mures
Obstetrica si Ginecologie | Year: 2011

Objective: The aim of the present study was to determine the perinatal effects of chorioamnionitis on preterm extremely low birth weight infants. Study design: Retrospective cohort conducted by medical records abstraction. The population was stratified by presence of maternal chorioamnionitis. Subgroups were compared by various perinatal attitude, outcomes and counfounding variables. Results: 125 premature infants with gestational age less than thirty weeks and birth weight 500 - 1000 g, born in two tertiary centers between January 2007 - December 2009 were enrolled in an retrospective epidemiological study. Intraventricular hemorrhage was 47% in the chorioamnionitis group and 44% in no chorioamnionitis group (p< 0.05). Persistent arterial duct rate was 32% in the chorioamnionitis group and 12% in no chorioamnionitis group (p<0, 05). The mortality rate was 44% in chorioamnionitis group versus 55% in no chorioamnionitis group (p >0, 05) Conclusions: We confirmed the relationship between maternal chorioamnionitis and neonatal morbidity but not with mortality of extremely low birth weight infants.


Marginean C.,UMF Targu Mures | Marginean C.O.,UMF Targu Mures | Brinzaniuc K.,UMF Targu Mures | Voidazan S.,UMF Targu Mures | Pop T.S.,UMF Targu Mures
Gineco.eu | Year: 2013

Objective. The aim of the present study was to demonstrate and measure the normal alveolar ridge, on threedimensional (3D) volumes obtained when performing the screening for the end of the Ist trimester. Methods. A group of 121 pregnant patients, each pregnancy with a single fetus. Each fetus had a 3D volume acquired between 11+0 and 13+6 weeks. The alveolar ridge area measurement was performed by two different operators. Results. From 120 volumes, at 100 fetus volumes, we obtained using multiplane processing, sections similar to the one from the miscarriage (82.64%). Measurement of alveolar ridge area was possible in cross section obtained in all 100 volumes, without any significant differences between the two operators (mean 0.1900 cm2, 95% CI: 0.1754-0.2046, 0.1908 versus mean, 95% CI= 0.1762-0.2054, p= 0.9389). Conclusions. Analysis of volumes, at the end of the Ist trimester ultrasound screening, obtains sections which contain and show the normal alveolar ridge, part of the palate.


Szava D.-T.,UMF Targu Mures | Bogozi B.,UMF Targu Mures | Szava I.,Transilvania University of Brasov | Tarcolea M.,Polytechnic University of Bucharest | And 2 more authors.
Materiale Plastice | Year: 2015

In order to assess in vitro biomechanical behaviour of dental implants, numerous experimental methods can be used. In our experiment, we use dental implants inserted into the artificial jaws, made of ABS plastic material and Araldite D, and we chose the VIC method (Video Image Correlation), spatial version (3D), to monitor the deformation field of area surrounding implant. For both experiment types, with ABS mandible or Araldite D sheet, the results were similar and controllable. Authors are confident with this technique and hope that experimental methods will serve as a database for research in this area.


Beresescu F.G.,UMF Targu Mures | Hancu V.,Titu Maiorescu University | Mucenic S.G.,UMF Targu Mures | Cosarca A.S.,UMF Targu Mures | And 2 more authors.
Materiale Plastice | Year: 2015

The purpose of this study is to assess the effects of artificial saliva with different pH on the wearing of glass ionomer cements. We used three types of glass ionomer cements and three immersion environments. We have prepared a total of 96 samples. We used 6 artificial saliva samples for each environment. Each sample was immersed in the storage solution to a specific pH. Storage solution was changed on days 1, 7, 14 and 28. Glass ionomer cements are influenced by the storage media, showing significant changes in the case of an acidic environment (in our case, artificial saliva with different pH). As long as the material is tolerated and protected by the tooth structure, resistance to abrasion will be satisfactory.


Tarcolea M.,Polytechnic University of Bucharest | Hancu V.,Titu Maiorescu University | Miculescu F.,Polytechnic University of Bucharest | Smatrea O.,Titu Maiorescu University | And 3 more authors.
Revista de Chimie | Year: 2015

Non-compliance of the technology for making of prosthetics restorations can induce some phenomena appearance which can cause, during the use, failures of the dental materials properties. This study target was the verification of structural and chemical homogeneity in the characteristic parts of the mold for a dental crown made of CoCrMoW alloy. The samples from the metallic crown, gate runner and pouring gate were investigated. The general microstructural aspect is characteristic to a mold metal state and, without a homogenization, the life time of the prosthetic crown could be reduced. The differences between the three characteristic zones prove that just the prosthetic crown, which is the thinner element, has also the most vicious microstructure in the rough cast state.


Comaneanu R.M.,Titu Maiorescu University | Hancu V.,Titu Maiorescu University | Barbu H.M.,Titu Maiorescu University | Coman C.,Titu Maiorescu University | And 4 more authors.
Revista de Chimie | Year: 2015

A material is considered as biocompatible when it does not harm nor create toxic reactions or systemic side effects. Most of reactions caused by dental materials are of allergic type, with symptoms pointed out at the oral mucosa level or cutaneous tissue level. For saliva and dental tissues media, which a dental restoration comes into contact it is of extremely importance the proper knowledge of the changes which can occur in time at the materials level. The present study assays the biocompatibility of six samples of dental alloys used in metal-fused-to-ceramic technology, three based on NiCr and three based on CoCr. All biocompatibility assays were performed on an osteoblast-like cell line, phenotypically close to osteoblasts (MNNG-Human Osteosarcoma cell line - HOS).


PubMed | U.M.F. Targu Mures
Type: Journal Article | Journal: Pneumologia (Bucharest, Romania) | Year: 2012

Gastroesophageal reflux and bronchial asthma are frequently encountered comorbidities that maintain an ambivalent relationship, generating a vicious circle where gastroesophageal reflux increases asthmatic symptoms or precipitates bronchial asthma and asthma can trigger or worsen gastroesophageal reflux disease. Pathogenetic mechanisms of these interrelation are imperfectly understood, despite intense concerns of specialists in both areas. There have been incriminated: eso-bronchial constrictor vagal mediated reflexes, bronchial hyperreactivity, neurogenic inflammation induced by hydrochloric acid penetration in the oesofagus, airways hydrochloric acid microaspiration with asthmatic trigger effects, increased bronchial resistance or increased immune response to antigens. Bronchial obstruction and some antiasthmatic medication can decrease lower esophageal sphincter pressure and thus triggering or aggravating gastroesophageal reflux. The diagnosis of the gastroesophageal reflux in asthmatics involves a careful clinical exam, digestive functional test (up to 24 hours monitoring esophageal pH) and esogastroscopy. Gastroesophageal reflux treatment in asthmatic patients claims elimination of both disease risk factors, diet, proton-pump inhibitors.

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