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Sebastian Popescu, Dan Gheorghe Dimitriu
One of the consequences of driving a plasma discharge away from the thermodynamic equilibrium is the appearance of one or more fireballs in front of the anode. The formation of this self-organized space charge structure marks the transformation of part of the …
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Ana-Maria Trofin, Dan Gheorghe Dimitriu, Vlad Ghizdovăţ, Dragos Ioan Rusu et autres
Atrial fibrillation (AF) and atrial flutter (AFL) are complex rhythm disturbances in which conventional electrocardiographic interpretation may not fully capture beat-to-beat dynamical organization. Quantitative ECG complexity may be relevant to future cardiac rehabilitation monitoring, but its clinical role remains unvalidated. This retrospective …
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Florin Enescu, Codrina Ionita, Dan Gheorghe Dimitriu, R. Schrittwieser
In this article, we present an overview of our investigations on the formation and behavior of space charge structures in an argon discharge plasma on gridded and smooth spherical hollow electrodes with and without orifices. Four experiments are described, in which we …
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Dana Ortansa Dorohoi, Dan Gheorghe Dimitriu, Cezarina Morosanu, Valentina Cloşca
The azobenzene derivative 4-(p-tolyl-diazenyl)-phenyl acrylate (AZD) is studied here from the solvatochromic point of view in order to characterize the interactions from its binary and ternary solutions and to estimate the excited state dipole moment. The molecular descriptors of the AZD molecule …
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Andreea Irina Barzic, Iuliana Stoica, Mihaela Avădanei, Raluca Marinica Albu et autres
Transparent polymers are key materials for producing a broad category of optical components. For specific uses, the material needs additional adaptation of its basic properties. In this context, the current article is focused on applying two kinds of treatments for tailoring the …
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Ecaterina Ambrosi, Alexandru Zara, Dana Ortansa Dorohoi, Dan Gheorghe Dimitriu
Binary solvent mixtures of the non-ionic surfactant Triton X-100 with water, methanol, ethanol, and 1-propanol, respectively, were investigated by solvatochromic studies. The absorption spectral bands of methyl red dye, used as a solvatochromic probe, were recorded in ternary solutions prepared with different …
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Dana Ortansa Dorohoi, Dan Gheorghe Dimitriu
A rapid and simple spectral method for determining the linear birefringence of thin anisotropic films, using the channeled spectra, is proposed in this article. Two channeled spectra must be recorded for a transparent system containing a thick anisotropic layer and a thin …
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Dan Gheorghe Dimitriu, Clint Taylor, Samuel W. Ximenes, Shazia Iqbal et autres
Abstract The program, formerly known as The Mind Fitness Program, had to be renamed to avoid a registered trademark infringement. The new name is more explicit in describing the real goal of the program which is to prepare the participants for STEM …
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Vlad Ghizdovăţ, Lucian Daniel Dobreci, Adina Camelia Slicaru, Mihaela Alina Cristuta et autres
By employing mathematical procedures specific to non-linear dynamics, we devised a method for analyzing all the stages of an epileptic crisis. It can be seen that a specific attractor (reconstructed in the states space by time delay method) can be associated with …
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Alexandru Cocean, Georgiana Cocean, Cristina Postolachi, Silvia Garofalide et autres
Crystalline silver thin layers were obtained using high-energy pulsed laser ablation without the heating of the deposition substrate. The fluid Plateau–Rayleigh (PRI), Rayleigh–Taylor (RTI), and Richtmyer–Meshkov (RMI) instabilities, as well as the crown splash induced during the pulsed laser deposition (PLD) in …
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Corina Cheptea, Alexandru Zara, Ecaterina Ambrosi, Ana Cezarina Moroșanu et autres
Fluorescein sodium is a very important compound for a wide spectrum of applications, from which medical applications prevail. Despite this, there are very few studies in the literature related to the structure and fundamental properties of fluorescein sodium and its solutions, with …
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Alexandru Zara, Raluca Marinica Albu, Iuliana Stoica, Andreea Irina Barzic et autres
Investigation of chiroptical polymers in the solution phase is paramount for designing supramolecular architectures for photonic or biomedical devices. This work is devoted to the case study of poly(propylene oxide) (PPO) optical activity in several solvents: benzonitrile, carbon disulfide, chloroform, ethyl acetate, …
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