A5066807472- Dental Implant Techniques and Outcomes
- Glass properties and applications
- Spectroscopy Techniques in Biomedical and Chemical Research
- Advanced Chemical Sensor Technologies
- Pregnancy and preeclampsia studies
- Phase-change materials and chalcogenides
- Gas Sensing Nanomaterials and Sensors
- Dental materials and restorations
- Graphene research and applications
- Magneto-Optical Properties and Applications
- Mass Spectrometry Techniques and Applications
- Bone Tissue Engineering Materials
- Conducting polymers and applications
- Luminescence Properties of Advanced Materials
- Oral microbiology and periodontitis research
- Gold and Silver Nanoparticles Synthesis and Applications
- Spectroscopy and Chemometric Analyses
- Carbon Nanotubes in Composites
- Nanoparticles: synthesis and applications
- Advanced Nanomaterials in Catalysis
- Electrochemical sensors and biosensors
- Polyamine Metabolism and Applications
- Prenatal Screening and Diagnostics
- Advanced biosensing and bioanalysis techniques
- Thermal properties of materials
National Institute of Research and Development for Optoelectronics
2019-2025
University of Bucharest
2014-2021
The development of graphene-based materials for optical limiting functionality is an active field research. Optical femtosecond laser pulses in the infrared-B (IR-B) (1.4–3 μm) spectral domain has been investigated to a lesser extent than that nanosecond, picosecond and at wavelengths up 1.1 μm. Novel nonlinear materials, glassy graphene oxide (GO)-based silico-phosphate composites, were prepared, first time our knowledge, by convenient low cost sol-gel method, as described paper, using...
(1) Background: The treatment of dental cavities and restoration tooth shape requires specialized materials with specific clinical properties, including being easy to model, light-cured, having a natural color, reduced shrinkage, hardness similar hydroxyapatite, no leakage. dimensional stability resin composite is affected by polymerization degree conversion (number π carbon bonds converted into σ ones), thermal contraction expansion, interactions an aqueous environment. (2) Methods: used in...
Umbilical cord abnormalities are not rare, and often associated with structural or chromosomal abnormalities, fetal intrauterine growth restriction, poor pregnancy outcomes; the latter can be a result of prematurity, placentation deficiency or, implicitly, an increased index cesarean delivery due to presence distress, higher admission neonatal intensive care, prenatal mortality rates. Even if incidence velamentous insertion, vasa praevia umbilical knots is low, these pathologies increase...
CAM/CAD composites are widely used as dental restoration materials due to their resistivity wear. The purpose of this study was determine the effect human gingival fibroblast cells on three different computer-aided design/computer-aided manufacturing (CAD/CAM) hybrid with resin-based (RBC) and assess stability following cell growth. were investigated in conditions follows: (i) (human fibroblasts, HFIB-Gs) incubated over material for each sample, denoted A; (ii) reference, raw material, B;...
Graphene/CNT layers were deposited onto platinum electrodes of an interdigitated sensor using radio-frequency magnetron sputtering. The graphene/CNTs synthesized in Argon atmosphere at a pressure (2 × 10−2–5 10−3) mbar, with the substrate maintained 300 °C either through continuous heating electronically controlled heater or by applying −200 V bias direct current power supply throughout deposition process. study compares surface morphology, carbon atom arrangement within layer volumes, and...
This work investigates the structural, magnetic and magneto-optical properties of a new zinc phosphate-tellurite glass belonging to 45ZnO-10Al2O3-40P2O5-5TeO2 system. The was prepared by wet method processing starting reagents followed suitable melting–stirring–quenching–annealing steps. Specific parameters such as density, average molecular mass, molar volume, oxygen packaging refractive index, refractivity, electronic polarizability, reflection loss, optical transmission, band gap basicity...
In this work, we study the sensing properties of multi-layer graphene combined with pyrrole in order to elaborate low-cost, high-sensitive material for cortisol detection. Graphene nanoplatelets and were dispersed a solution containing 1M HNO3 by using powerful ultrasound probe 10 min, then centrifuged 30 min at 4000 rpm; polymerization was performed cyclic voltammetry. The graphene-pyrrole composite tested ultra-low levels artificial saliva, consistent excreted human salivary samples....
True umbilical knot (TUK), although not a commonly encountered pathology, hasan important psychological burden on the mother and obstetrician. It has an extremely low prenatal ultrasound diagnosis rate, despite its adverse perinatal outcomes when unknown. We conducted retrospective observational analytical study 7-year period (2015-2021), including all pregnancies overseen by single fetal-maternal medicine specialist for monitoring delivery. analyzed detection rate correlations between of...
Background and Objectives: Despite being largely preventable, cervical cancer mortality still remains an important public health problem globally, in Europe, Romania. The European Union member states are urged to implement systematic, population-based screenings for cancer, but the programs developed by countries remain very heterogeneous. This study aimed investigate differences cervix between Romania EU within over last two decades reveal major sources of inequalities policy implications....
The aim of this study was to evaluate the quality bone, revealing different phases for calcified tissues independent medical history patient in relation periodontitis by means vivo Raman spectroscopy. spectroscopy measurements were performed during surgery and then ex harvested bone samples whole group patients (ten patients). specific peaks spectrum traced reference compounds (e.g., calcium phosphates) samples. variation intensity constituents' concentrations reflects can be strongly...
In the last decade, building biohybrid materials has gained considerable interest in field of nanotechnology. This paper describes an original design for bionanoarchitectures with interesting properties and potential bioapplications. Multilamellar lipid vesicles (obtained by hydration a dipalmitoyl phosphatidylcholine thin film) without cholesterol were labelled natural photopigment (chlorophyll ), which functioned as sensor to detect modifications artificial bilayers. These biomimetic...
We successfully prepared a non-enzymatic sensor based on graphene-thiophene composite for histamine detection. The self-assembling properties of the thiophene onto Au support and high electrical conductivity graphene encouraged choice this type composite. was deposited via electrochemical polymerization layer screen-printed microelectrode. electropolymerization detection were both achieved by cyclic voltammetry. Two types electrolytes used detection: (a) phosphate buffer solution (PBS),...
(1) Background: A widespread problem in oral health is cavities produced by cariogenic bacteria that consume fermentable carbohydrates and lower pH to 5.5-6.5, thus extracting Ca
Hemivertebra is a common cause of congenital scoliosis and results from lack formation one-half the vertebral body. This condition very rare can present as solitary or syndrome component: i.e., split notochord syndrome, which often implies defects, bifid vertebra to hemivertebrae, fused vertebrae. We describe case supernumerary lateral hemivertebra detected prenatally at 12 weeks gestation ultrasonography specifics that lead early accurate diagnosis, monitoring during pregnancy, follow-up...
(1) Background: In oral surgery, bone regeneration is achieved through various types of grafts or substitutes and its success usually analyzed by micro-computed tomography histomorphometry. The aim this study was to evaluate the usefulness Raman spectroscopy as an alternative other techniques for quality evaluation during a standard surgery procedure. (2) Methods: preliminary augmentation maxillary sinus floor elevation performed several (five) patients after results were compared with...
Abstract This work is focused on investigation of thermal, structural, optical, magnetic, and magneto‐optical properties novel titanium phosphate‐tellurite glass applied as Faraday rotators. The belonging to the system 35Li 2 O–10Al O 3 –5TiO –45P 5 –5TeO was prepared by a nonconventional wet route raw materials processing, followed melting‐quenching‐annealing steps. Some important physical investigated have been measured calculated, providing knowledge related compactness, electronic...
The aim of this study is to propose a standardized management care for patients diagnosed with cesarean scar pregnancy (CSP). There are two types CSP: Type 1 (on the scar) vs. type 2 (in niche). To date there no international standard predict extent invasion or optimal CSP.We used intramuscular methotrexate injection followed by uterine artery embolization combined suction evacuation as conservative approach treatment seven CSP. Our inclusion criteria, be satisfied simultaneously, were...