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Article ; Online: Shaping Efficiency of Rotary and Reciprocating Kinematics of Engine-driven Nickel-Titanium Instruments in Moderate and Severely curved Root Canals Using Microcomputed Tomography: A Systematic Review of Ex Vivo Studies.

Călin, Claudiu / Focșăneanu, Ana-Maria / Paulsen, Friedrich / Didilescu, Andreea C / Niță, Tiberiu

2024

Abstract: Introduction: This systematic review aimed to compare reciprocating with continuous rotary instrumentation kinematics, by means of microcomputed tomography evaluations, in extracted human permanent teeth with moderate and severe canal curvatures.: ... ...

Abstract	Introduction: This systematic review aimed to compare reciprocating with continuous rotary instrumentation kinematics, by means of microcomputed tomography evaluations, in extracted human permanent teeth with moderate and severe canal curvatures. Methods: The research protocol was registered in the International Prospective Register of Systematic Reviews and given the reference number CRD42023404035. An electronic search was undertaken in MEDLINE (PubMed), EBSCO, Scopus, Web of Science databases until December 2021. Manual screening of issues in endodontic journals and references of relevant articles were assessed individually. The risk of bias (RoB) of the included articles was evaluated with the QUIN tool (Quality Assessment Tool for In Vitro Studies). Results: Among 1640 retrieved articles, 49 were included in the qualitative synthesis. Fifteen articles had low RoB, 33 articles had medium RoB, and only 1 study was at high RoB. Continuous rotary systems had better centering ability in both moderate and severe canal curvatures and resulted in less apical transportation in severely curved root canals. None of the kinematic systems was capable of instrumenting the entire canal surface area. Reciprocating kinematics systems tended to provide higher increase in surface area of severely curved canals and produced fewer dentinal microcracks in moderately curved canals. Conclusions: The evidence presented in this review suggests that continuous rotary system seems to be better than reciprocating system in solving the major issues encountered during root canal instrumentation of extracted teeth with moderate and severe curvatures.
Language	English
Publishing date	2024-03-25
Publishing country	United States
Document type	Journal Article ; Review
ZDB-ID	752412-2
ISSN	1878-3554 ; 0099-2399
ISSN (online)	1878-3554
ISSN	0099-2399
DOI	10.1016/j.joen.2024.03.009
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Article ; Online: 'Spirituality' in Health Studies: Competing Spiritualities and the Elevated Status of Mindfulness.

Nita, Maria

Journal of religion and health

2019 Volume 58, Issue 5, Page(s) 1605–1618

Abstract: The article investigates discourses of 'spirituality' in the field of Health Studies, among scholarly voices and the voices of the practitioners and patients these studies reflect. It examines current trends in contemporary spirituality as well as links ... ...

Abstract	The article investigates discourses of 'spirituality' in the field of Health Studies, among scholarly voices and the voices of the practitioners and patients these studies reflect. It examines current trends in contemporary spirituality as well as links with debates involving science, religion and secularisation. The article argues that, in the public domain, 'spirituality' is beginning to denote a collective practice rather than an individual search for meaning. Furthermore, the article identifies some common understandings of spirituality in the context of Health Studies and health environments, such as it being a tool that can facilitate closeness and emotional exchanges. Finally, it proposes that the success and, as I will show, elevated status of 'mindfulness' in this field points to 'competing spiritualities', despite shared understandings.
MeSH term(s)	Humans ; Mindfulness ; Religion and Medicine ; Secularism ; Spiritual Therapies ; Spirituality
Language	English
Publishing date	2019-02-26
Publishing country	United States
Document type	Journal Article
ZDB-ID	2017250-3
ISSN	1573-6571 ; 0022-4197
ISSN (online)	1573-6571
ISSN	0022-4197
DOI	10.1007/s10943-019-00773-2
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Article ; Online: Special Features of Polyester-Based Materials for Medical Applications.

Darie-Niță, Raluca Nicoleta / Râpă, Maria / Frąckowiak, Stanisław

Polymers

2022 Volume 14, Issue 5

Abstract: This article presents current possibilities of using polyester-based materials in hard and soft tissue engineering, wound dressings, surgical implants, vascular reconstructive surgery, ophthalmology, and other medical applications. The review summarizes ... ...

Abstract	This article presents current possibilities of using polyester-based materials in hard and soft tissue engineering, wound dressings, surgical implants, vascular reconstructive surgery, ophthalmology, and other medical applications. The review summarizes the recent literature on the key features of processing methods and potential suitable combinations of polyester-based materials with improved physicochemical and biological properties that meet the specific requirements for selected medical fields. The polyester materials used in multiresistant infection prevention, including during the COVID-19 pandemic, as well as aspects covering environmental concerns, current risks and limitations, and potential future directions are also addressed. Depending on the different features of polyester types, as well as their specific medical applications, it can be generally estimated that 25-50% polyesters are used in the medical field, while an increase of at least 20% has been achieved since the COVID-19 pandemic started. The remaining percentage is provided by other types of natural or synthetic polymers; i.e., 25% polyolefins in personal protection equipment (PPE).
Language	English
Publishing date	2022-02-27
Publishing country	Switzerland
Document type	Journal Article ; Review
ZDB-ID	2527146-5
ISSN	2073-4360 ; 2073-4360
ISSN (online)	2073-4360
ISSN	2073-4360
DOI	10.3390/polym14050951
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Article ; Online: Special Features of Polyester-Based Materials for Medical Applications

Raluca Nicoleta Darie-Niță / Maria Râpă / Stanisław Frąckowiak

Polymers, Vol 14, Iss 951, p

2022 Volume 951

Abstract	This article presents current possibilities of using polyester-based materials in hard and soft tissue engineering, wound dressings, surgical implants, vascular reconstructive surgery, ophthalmology, and other medical applications. The review summarizes the recent literature on the key features of processing methods and potential suitable combinations of polyester-based materials with improved physicochemical and biological properties that meet the specific requirements for selected medical fields. The polyester materials used in multiresistant infection prevention, including during the COVID-19 pandemic, as well as aspects covering environmental concerns, current risks and limitations, and potential future directions are also addressed. Depending on the different features of polyester types, as well as their specific medical applications, it can be generally estimated that 25–50% polyesters are used in the medical field, while an increase of at least 20% has been achieved since the COVID-19 pandemic started. The remaining percentage is provided by other types of natural or synthetic polymers; i.e., 25% polyolefins in personal protection equipment (PPE).
Keywords	polyesters ; medical applications ; biomaterial ; processing methods ; properties ; COVID-19 ; Organic chemistry ; QD241-441
Language	English
Publishing date	2022-02-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Exploring Lifestyle and Dietary Patterns in Pregnancy and Their Impact on Health: A Comparative Analysis of Two Distinct Groups 10 Years Apart.

Mitran, Andreea-Maria / Gherasim, Andreea / Niță, Otilia / Mihalache, Laura / Arhire, Lidia Iuliana / Cioancă, Oana / Gafițanu, Dumitru / Popa, Alina Delia

Nutrients

2024 Volume 16, Issue 3

Abstract: The significance of dietary patterns during pregnancy is highlighted by accumulating evidence, emphasizing their pivotal role in promoting a healthy pregnancy for both the mother and the child. This study aimed to assess the current dietary patterns of ... ...

Abstract	The significance of dietary patterns during pregnancy is highlighted by accumulating evidence, emphasizing their pivotal role in promoting a healthy pregnancy for both the mother and the child. This study aimed to assess the current dietary patterns of pregnant women, compare the energy and nutrient intake of two distinct groups with a 10-year interval, and identify changes in dietary patterns. EPIC FFQ was applied, and its data were interpreted with the FETA program version 6 (CAMB/PQ/6/1205). By means of principal component analysis, three different food patterns were identified in each study group: vegetarian, balanced, and traditional (2013); and prudent, vegetarian, and modern (2023). Analyzing the relationship between food groups and gestational weight, we found that gestational weight gain in 2013 was positively correlated with eggs and egg dishes and milk and milk products, whereas in 2023, gestational weight gain was positively correlated with fats and oils, non-alcoholic beverages, and the modern pattern. Additionally, in 2023, pre-gestational BMI correlated positively with eggs and egg dishes. The balanced pattern emerged as a predictor for a lower likelihood of inadequate gestational weight gain in both groups. Furthermore, normal and overweight pregnant women showed a reduced likelihood of excessive gestational weight gain.
MeSH term(s)	Child ; Pregnancy ; Female ; Humans ; Diet ; Gestational Weight Gain ; Dietary Patterns ; Weight Gain ; Life Style ; Body Mass Index
Language	English
Publishing date	2024-01-27
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2518386-2
ISSN	2072-6643 ; 2072-6643
ISSN (online)	2072-6643
ISSN	2072-6643
DOI	10.3390/nu16030377
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Article ; Online: Elliptic Curve-Based Query Authentication Protocol for IoT Devices Aided by Blockchain.

Nita, Stefania Loredana / Mihailescu, Marius Iulian

Sensors (Basel, Switzerland)

2023 Volume 23, Issue 3

Abstract: Digital transformation has increased its proportion in the last few years and the Internet-on-Things (IoT) domain is not an exception, with more and more devices or sensors being connected to the Internet and transmitting different types of data. Usually, ...

Abstract	Digital transformation has increased its proportion in the last few years and the Internet-on-Things (IoT) domain is not an exception, with more and more devices or sensors being connected to the Internet and transmitting different types of data. Usually, being part of more complex IT systems, it must be ensured that the IoT devices transmitting the data are authenticated components of the system before sending the data to a storage server. However, usually, IoT devices have limited computing power, therefore all of the work that they are doing should not be too expensive in terms of computations. This is the case for the authentication mechanism, too. Having this context, in this paper, we propose an authentication mechanism for IoT devices based on elliptic curves, which are known as having a low computational cost compared to other techniques used in cryptography that provide the same level of security. The proposed system includes a blockchain network that will verify the identity of the device which tries to connect within the system to send the data to the storage server, a process that will be made together with the storage server. Once the identity is valid, the blockchain records the transaction and the storage server initiates the data transmission process. Besides including a lightweight authentication mechanism, the proposed method has several other important properties due to it using the blockchain network. Compared to the related work that we analyzed, we show that the proposed authentication mechanism is secure against common attacks designed for IoT devices. The performance analysis shows that the authentication query made by the IoT device takes place in less than a second on both a MSP430F1611 microcontroller and a MICAz sensor.
Language	English
Publishing date	2023-01-26
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2052857-7
ISSN	1424-8220 ; 1424-8220
ISSN (online)	1424-8220
ISSN	1424-8220
DOI	10.3390/s23031371
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Article: Experimental Research on the Wear Behavior of Materials Used in the Manufacture of Components for Cement Concrete Mixers.

Niță, Adrian / Petrescu, Marius Gabriel / Dumitru, Teodor / Burlacu, Andrei / Tănase, Maria / Laudacescu, Eugen / Ramadan, Ibrahim

Materials (Basel, Switzerland)

2023 Volume 16, Issue 6

Abstract: Mixers used in the production of cement concrete operate under special conditions such as mechanical stresses, abrasive-erosive friction phenomena, and corrosive working environments. In this paper, the authors aimed to establish a correlation between ... ...

Abstract	Mixers used in the production of cement concrete operate under special conditions such as mechanical stresses, abrasive-erosive friction phenomena, and corrosive working environments. In this paper, the authors aimed to establish a correlation between the chemical composition of mixer blade materials and their wear behavior. Three types of alloyed (chromium) cast iron were used for an experimental program that included three sets of tests in accelerated wear conditions which replicated the actual working environment (mixture of mineral aggregate, sand, cement, and water). The tribological tests were carried out using a Baroid tribometer. The results indicated that regardless of the test environment, cast iron with the highest chromium content exhibited the best wear resistance. However, it cannot be concluded that the wear resistance of the studied cast iron materials increases as a direct result of an increase in chromium content. For a chromium content of less than 25%, a better tribological behavior was observed for cast iron with a lower chromium content (of about 4%) than for cast irons with a higher chromium content (of about 9%).
Language	English
Publishing date	2023-03-14
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2487261-1
ISSN	1996-1944
ISSN	1996-1944
DOI	10.3390/ma16062326
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Article: Experimental Research Regarding the Effect of Mineral Aggregates on the Wear of Mixing Blades of Concrete Mixers.

Niță, Adrian / Laudacescu, Eugen / Petrescu, Marius Gabriel / Dumitru, Teodor / Burlacu, Andrei / Bădoiu, Dorin George / Tănase, Maria

Materials (Basel, Switzerland)

2023 Volume 16, Issue 14

Abstract: Industrial mixers are equipment used to mechanically combine different types of materials in order to obtain homogeneous mixtures. In concrete industry production, mixers play a crucial role by facilitating the efficient and consistent blending of ... ...

Abstract	Industrial mixers are equipment used to mechanically combine different types of materials in order to obtain homogeneous mixtures. In concrete industry production, mixers play a crucial role by facilitating the efficient and consistent blending of various constituents to create high-quality concrete. Because the mixers in the concrete industry work in conditions characterized by abrasive and erosive loadings, the authors of this paper tried to establish a dependence between the quality of the material from which the mixing elements are made and their wear resistance. Three types of cast irons alloyed with chromium, specific to the construction of mixing blades, were used in this research. The working environment was a mixture of crushed mineral aggregates corresponding to the granulometric class 4-8 mm. The tests were carried out on an experimental stand designed and built by the authors of this paper. The stand reproduces on a scale of 1:2 a drum made up of a double-axis horizontal mixer. The stand had the possibility to change the value of the attack angle of the mixing blades, corresponding to the following values: 30, 45, and 60 degrees. The results of the tests established the dependence between the type of material and the wear rate of the blades as well as the influence exerted by the angle of attack on the wear of the mixing blades. It was shown that when the inclination angle of the blade relative to the shaft axis increases, the cumulative mass loss decreases, with values between 43% and 55.83%, as a function of the quality of blade material.
Language	English
Publishing date	2023-07-17
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2487261-1
ISSN	1996-1944
ISSN	1996-1944
DOI	10.3390/ma16145047
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Article ; Online: Enhancing Students’ Entrepreneurial Competencies through Extracurricular Activities—A Pragmatic Approach to Sustainability-Oriented Higher Education

Claudia Isac / Ana Maria Mihaela Iordache / Lia Baltador / Cristina Coculescu / Dorina Niță

Sustainability, Vol 15, Iss 8708, p

2023 Volume 8708

Abstract: Entrepreneurship can provide a creative, disruptive, problem-solving-oriented approach to the current economic, environmental, and social challenges of the world. This article aims to provide an analysis about the way universities can have an impact on ... ...

Abstract	Entrepreneurship can provide a creative, disruptive, problem-solving-oriented approach to the current economic, environmental, and social challenges of the world. This article aims to provide an analysis about the way universities can have an impact on developing entrepreneurial competence in students through extracurricular activities. The research relies on a questionnaire survey of students at the University of Petrosani, who participated in a range of entrepreneurial activities both online during the COVID-19 pandemic and face-to-face afterwards. The methodology consisted of applying principal component analysis to reduce the dimensionality of the indicators, followed by classification of the respondents through cluster analysis and training of a feedforward neural network. After finishing the network-training process, the error was minimized, resulting in three classes of respondents. Furthermore, based on the three classes, follow-up conclusions, policies, and decisions can be issued regarding the perception of entrepreneurship at the societal level, which is beneficial for academia and entrepreneurs, as well as for future research undertaken in this field. The key conclusion of our research is that entrepreneurship education is a real facilitator of the transition to sustainable entrepreneurship. Students perceived meeting successful entrepreneurs as being among the most effective extracurricular activities, assessing online activities as useful, and the field of study proved to be an important factor in their entrepreneurial intention.
Keywords	entrepreneurship education ; entrepreneurial competence ; entrepreneurial extracurricular activities ; business sustainability ; entrepreneurial intentions ; principal component analysis ; Environmental effects of industries and plants ; TD194-195 ; Renewable energy sources ; TJ807-830 ; Environmental sciences ; GE1-350
Subject code	650
Language	English
Publishing date	2023-05-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Insights into Anthropogenic Micro- and Nanoplastic Accumulation in Drinking Water Sources and Their Potential Effects on Human Health.

Râpă, Maria / Darie-Niță, Raluca Nicoleta / Matei, Ecaterina / Predescu, Andra-Mihaela / Berbecaru, Andrei-Constantin / Predescu, Cristian

Polymers

2023 Volume 15, Issue 11

Abstract: Anthropogenic microplastics (MPs) and nanoplastics (NPs) are ubiquitous pollutants found in aquatic, food, soil and air environments. Recently, drinking water for human consumption has been considered a significant pathway for ingestion of such plastic ... ...

Abstract	Anthropogenic microplastics (MPs) and nanoplastics (NPs) are ubiquitous pollutants found in aquatic, food, soil and air environments. Recently, drinking water for human consumption has been considered a significant pathway for ingestion of such plastic pollutants. Most of the analytical methods developed for detection and identification of MPs have been established for particles with sizes > 10 μm, but new analytical approaches are required to identify NPs below 1 μm. This review aims to evaluate the most recent information on the release of MPs and NPs in water sources intended for human consumption, specifically tap water and commercial bottled water. The potential effects on human health of dermal exposure, inhalation, and ingestion of these particles were examined. Emerging technologies used to remove MPs and/or NPs from drinking water sources and their advantages and limitations were also assessed. The main findings showed that the MPs with sizes > 10 μm were completely removed from drinking water treatment plants (DWTPs). The smallest NP identified using pyrolysis-gas chromatography-mass spectrometry (Pyr-GC/MS) had a diameter of 58 nm. Contamination with MPs/NPs can occur during the distribution of tap water to consumers, as well as when opening and closing screw caps of bottled water or when using recycled plastic or glass bottles for drinking water. In conclusion, this comprehensive study emphasizes the importance of a unified approach to detect MPs and NPs in drinking water, as well as raising the awareness of regulators, policymakers and the public about the impact of these pollutants, which pose a human health risk.
Language	English
Publishing date	2023-05-23
Publishing country	Switzerland
Document type	Journal Article ; Review
ZDB-ID	2527146-5
ISSN	2073-4360 ; 2073-4360
ISSN (online)	2073-4360
ISSN	2073-4360
DOI	10.3390/polym15112425
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