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298 results on '"ANGHEL, Ion"'

2. Structural and flame retardancy properties of GO-DOPO-HAK composite

Author

Mihis, Alin Grig, Cotet, Liviu Cosmin, Cadar, Calin, Pop, Lucian Cristian, Todea, Milica, Rusu, Mihai Marius, Vulpoi, Adriana, Székely, István, Sălăgean, Cătălin Alexandru, Magyari, Klara, Muresan-Pop, Marieta, Cadar, Oana, Baia, Monica, Sofran, Ioana Emilia, Lisa, Gabriela, Anghel, Ion, Baibarac, Mihaela, Danciu, Virginia, and Baia, Lucian

Published
2023
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3. The permutation entropy and its applications on fire tests data

Author

Mitroi-Symeonidis, Flavia-Corina, Anghel, Ion, Lalu, Octavian, and Popa, Constantin

Subjects
Physics - Data Analysis, Statistics and Probability, Computer Science - Information Theory, 94A17, 80A25, 37M10, 37A35, 92E20
Abstract

Based on the data gained from a full-scale experiment, the order/disorder characteristics of the compartment fire temperatures are analyzed. Among the known permutation/encoding type entropies used to analyze time series, we look for those that fit better in the fire phenomena. The literature in its major part does not focus on time series with data collected during full-scale fire experiments, therefore we do not only perform our analysis and report the results, but also discuss methods, algorithms, the novelty of our entropic approach and details behind the scene. The embedding dimension selection in the complexity evaluation is also discussed. Finally, more research directions are proposed.

Published
2019

11. Organophosphorus Reinforced Poly(vinyl alcohol) Nanocomposites Doped with Silver-Loaded Zeolite L Nanoparticles as Sustainable Materials for Packaging Applications

Author

Vlad-Bubulac, Tăchiță, primary, Hamciuc, Corneliu, additional, Serbezeanu, Diana, additional, Suflet, Dana Mihaela, additional, Rusu, Daniela, additional, Lisa, Gabriela, additional, Anghel, Ion, additional, Preda, Dana-Maria, additional, Todorova, Totka, additional, and Rîmbu, Cristina Mihaela, additional

Published
2023
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21. Magnetite Nanoparticles Functionalized with Therapeutic Agents for Enhanced ENT Antimicrobial Properties

Author

Caciandone, Mara, primary, Niculescu, Adelina-Gabriela, additional, Grumezescu, Valentina, additional, Bîrcă, Alexandra Cătălina, additional, Ghica, Ionuț Cosmin, additional, Vasile, Bogdan Ștefan, additional, Oprea, Ovidiu, additional, Nica, Ionela Cristina, additional, Stan, Miruna Silvia, additional, Holban, Alina Maria, additional, Grumezescu, Alexandru Mihai, additional, Anghel, Ion, additional, and Anghel, Alina Georgiana, additional

Published
2022
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23. Eco‐friendly flame retardant epoxy nanocomposites based on polyphosphonate and halloysite nanotubes.

Author

Hamciuc, Corneliu, Vlad‐Bubulac, Tăchiță, Serbezeanu, Diana, Lisa, Gabriela, Anghel, Ion, and Preda, Dana Maria

Subjects
FIREPROOFING agents, EPOXY resins, FIREPROOFING, HALLOYSITE, NANOTUBES, NANOCOMPOSITE materials
Abstract

The preparation of a novel polyphosphonate (PSFR) is described here, starting from phenylphosphonic dichloride and an equimolecular mixture containing equal amounts of two bisphenols, namely 4,4′‐dihydroxydiphenyl sulfone and 2‐(6‐oxido‐6H‐dibenzo<1,2>oxaphosphorin‐6‐yl)‐1,4‐benzenediol, following the polycondensation reaction in solution. Then, new environmental‐friendly nanocomposites having improved flame retardancy have been prepared by incorporating PSFR and halloysite nanotubes (HNTs) into epoxy resin. The effect of PSFR and HNTs contents on the chemical and physical characteristics of epoxy nanocomposites was investigated. The success of the reactions was monitored by infrared spectroscopy (FTIR) while microscopic related techniques (SEM) gave information on the morphology of the products. The thermosets exhibit glass transition temperatures in the range of 62.4–97.1°C and thermal decomposition temperatures in the interval of 296–359°C. The appearance of the char residues obtained by pyrolysis was studied by SEM measurements. The flammability behavior has been studied by microscale combustion calorimetry (MCC) tests. A considerable improvement in the flame retardancy of the thermosets was obtained by simultaneous incorporation of HNTs (10 wt%) and PSFR (equivalent of 1 wt% P) into epoxy resin. [ABSTRACT FROM AUTHOR]

Published
2023
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26. PEG-Functionalized Magnetite Nanoparticles for Modulation of Microbial Biofilms on Voice Prosthesis

Author

Caciandone, Mara, primary, Niculescu, Adelina-Gabriela, additional, Roșu, Aurelian Radu, additional, Grumezescu, Valentina, additional, Negut, Irina, additional, Holban, Alina Maria, additional, Oprea, Ovidiu, additional, Vasile, Bogdan Ștefan, additional, Bîrcă, Alexandra Cătălina, additional, Grumezescu, Alexandru Mihai, additional, Stan, Miruna Silvia, additional, Anghel, Alina Georgiana, additional, and Anghel, Ion, additional

Published
2021
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31. Pyrolysis and combustion of polystyrene composites based on graphene oxide functionalized with 3-(methacryloyloxy)-propyltrimethoxysilane

Author

Anghel, Ion, primary, Lisa, Gabriela, additional, Şofran, Ioana-Emilia, additional, Mitroi-Symeonidis, Flavia-Corina, additional, Rusu, Mihai Marius, additional, Baia, Monica, additional, Baia, Lucian, additional, Magyari, Klára, additional, Danciu, Virginia, additional, Cotet, Liviu Cosmin, additional, Stroe, Malvina, additional, and Baibarac, Mihaela, additional

Published
2021
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32. Challenges in the Romanian Healthcare System in the Context of the COVID-19 Pandemic

Author

Anica-Popa Adrian, Drăgoi Mihaela Cristina, Ciocodeică David-Florin, Anghel Ion, and Ștefan Simona Cătălina

Subjects
Coronavirus disease 2019 (COVID-19), business.industry, Romanian, Political science, Pandemic, language, Context (language use), Public relations, business, language.human_language, Healthcare system
Published
2021

43. Risks and complications in rhinoplasty. A comparative study in structural vs preservation rhinoplasty.

Author

Urs, Rodica, Anghel, Ion, Rajput Anghel, Adriana Oana, and Anghel, Alina Georgiana

Subjects
*RHINOPLASTY, *REOPERATION, *COMPARATIVE studies
Abstract

Introduction. Rhinoseptoplasty is considered the most challenging operation because many techniques have to be taken into consideration to achieve an optimal aesthetic and functional results. Rhinoseptoplasty techniques have been perfected over time, following two main surgical approaches: structural rhinoplasty (resection/ reconstruction) and conservative (preservation rhinoplasty). Methods. The authors present the risks and complications in a comparative study of 100 cases with patients in primary rhinoseptoplastyplasty performed between 2019-2021: 50 cases in Structural Rhinoplsty and 50 cases in Preservation Rhinoplasty. The study presents two surgical concepts of rhinoplasty regarding the main advantages, disadvantages and indications of each type of rhinoseptoplasty surgery. Results and conclusions. Complications post-rhinoseptoplasty can be considered as perioperative, functional, anatomic (aesthetic) and psyhological. In this study 10 cases (10%) of primary rhinoplasty required revision surgery. The most frequent postoperative deformity is the "pollybeak" when a deep naso-frontal angle, cartilaginous hump and reduced tip projection are present preoperatively. The pollybeak was the indication in 4 cases (40%) of all revision rhinoplasties. Other frequent postoperative deformities are: wide nasal tip, retractions of the columella base and irregularities of the nasal dorsum. These deformities are very often combined and caused by a loss of septal support. Septorhinoplasy is a difficult procedure and the surgeon must have accurate anatomical knowledge and rich clinical experience. The risks for rhinoplasty-complications can be reduced with increasing experience. It is very important to make distinction between complication and mistake. [ABSTRACT FROM AUTHOR]

Published
2022
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46. Erratum

Author

Anghel, Ion, Enache, Calcedonia, and Merino, Fernando

Subjects
HF5001-6182, erratum, Business
Abstract

The article “Macroeconomic determinants of corporate failures. Evidence from Romania and Spain” by Ion Anghel, Calcedonia Enache, Fernando Merino published in Journal of Business Economics and Management, 21(3), 743–759, https://doi.org/10.3846/jbem.2020.12217, contained the following errors: • Some information in the 5th graph about Jmax was not given in Table 2, page 752. • Information for Spain should be added in Figures 2 and 3 in page 753. • Some results in Table 4 should be presented in bold in page 754. These have been corrected. The publisher and the authors Ion Anghel, Calcedonia Enache, Fernando Merino apologise for the errors.

Published
2020

48. Traditional rhinoseptoplasty vs Preserving rhinoplasty – Literature Review.

Author

URS, Rodica, ANGHEL, Ion, RAJPUT ANGHEL, Adriana Oana, and ANGHEL, Alina Georgiana

Subjects
*RHINOPLASTY, *OPERATIVE surgery, *PLASTIC surgery, *LITERATURE reviews, *PATIENT selection, *MODERN society
Abstract

The nasal pyramid is an essential structure in the physiognomy of the individual, and the external appearance of the nose is very important in the modern society in which we find ourselves. That is why the anatomical diversity of the nasal pyramids has led to the development of various surgical technique for reshaping the nasal structures. Rhinoseptoplsty has changed considerably in recent decades, from a standardized reduction procedure to a procedure focused on very differentiated problems, reductions, relocations and augmentations of frequently combined tissues Most surgeons around the world have agreed on a new concept of surgery, that of preserving different structures of the nose given the fact that the principle of preservation is better than that of resection, with a more natural result. Material and method. Review of the two surgical concept of rhinoplasty regarding the main advantages and disadvantages of each type of rhinoseptoplasty surgery. Results and conclusions. Proper patient selection is important for good results. Before surgery, nasal analysis should perfomed clinically and photographically to determine the necessary corrections. Rhinoplasty is still one of the most challenging procedures in facial plastic surgery. With the right surgical experience and proper surgical techniques the results are most often good and the patients are satisfied. [ABSTRACT FROM AUTHOR]

Published
2022
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