Roxana Tucmeanu

Mrs. Roxana Tucmeanu

orcid

Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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15 September 2022 in Sustainability
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Journal Article
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Justyna ZywiolekJustyna Zywiolek
Justyna Zywiolek
RTRoxana Tucmeanu
Roxana Tucmeanu
ATAlin Iulian Tucmeanu
Alin Iulian Tucmeanu
NINicoleta Isac
Nicoleta Isac
Zahid YousafZahid Yousaf
Zahid Yousaf
The survival of an organization in the contemporary competitive and dynamic global business environment is associated with its creative workforce. This study explores the impact of transformational leadership (TL) and employee adaptiveness on workforce creativity. The mediating role of employee adaptiveness and the moderating role of knowledge sharing has also been tested. A simple random sampling technique was used to collect data from the 561 employees working in three star and five star hotels. Statistical techniques such as correlation and hierarchical regressions were used for testing hypotheses. To test the mediation effect, we used the statistical procedure suggested by Preacher and Hayes. The results revealed that employee creativity is initiated through TL in hotels and TL positively affects employee adaptiveness. The results of the mediating analysis confirmed the mediating role of employee adaptiveness between TL and creativity link in the context of hotel industry operating in developing nations. Moreover, the findings also revealed that knowledge sharing plays key role for TL and employee adaptiveness links. In this study, quantitative research design was utilized, and the cross-sectional method was used for data collection. Future research designs can be based on both quantitative and current qualitative analyses. The current model can be enriched using factors such as knowledge management systems, organizational structures, and digital platforms in the future.

11 August 2022 in Cells
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Journal Article
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Constantin MunteanuConstantin Munteanu
Constantin Munteanu
MRMariana Rotariu
Mariana Rotariu
MTMarius Alexandru Turnea
Marius Alexandru Turnea
AIAnca Mirela Ionescu
Anca Mirela Ionescu
CPCristina Popescu
Cristina Popescu
GOGelu Onose
Gelu Onose
Traumatic spinal cord injury is a life-changing condition with a significant socio-economic impact on patients, their relatives, their caregivers, and even the community. Despite considerable medical advances, there is still a lack of options for the effective treatment of these patients. The major complexity and significant disabling potential of the pathophysiology that spinal cord trauma triggers are the main factors that have led to incremental scientific research on this topic, including trying to describe the molecular and cellular mechanisms that regulate spinal cord repair and regeneration. Scientists have identified various practical approaches to promote cell growth and survival, remyelination, and neuroplasticity in this part of the central nervous system. This review focuses on specific detailed aspects of the involvement of cations in the cell biology of such pathology and on the possibility of repairing damaged spinal cord tissue. In this context, the cellular biology of sodium, potassium, lithium, calcium, and magnesium is essential for understanding the related pathophysiology and also the possibilities to counteract the harmful effects of traumatic events. Lithium, sodium, potassium—monovalent cations—and calcium and magnesium—bivalent cations—can influence many protein–protein interactions, gene transcription, ion channel functions, cellular energy processes—phosphorylation, oxidation—inflammation, etc. For data systematization and synthesis, we used the Preferred Reporting Items for Systematic Reviews and Meta-Analyzes (PRISMA) methodology, trying to make, as far as possible, some order in seeing the “big forest” instead of “trees”. Although we would have expected a large number of articles to address the topic, we were still surprised to find only 51 unique articles after removing duplicates from the 207 articles initially identified. Our article integrates data on many biochemical processes influenced by cations at the molecular level to understand the real possibilities of therapeutic intervention—which must maintain a very narrow balance in cell ion concentrations. Multimolecular, multi-cellular: neuronal cells, glial cells, non-neuronal cells, but also multi-ionic interactions play an important role in the balance between neuro-degenerative pathophysiological processes and the development of effective neuroprotective strategies. This article emphasizes the need for studying cation dynamics as an important future direction.

22 October 2022 in Life
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Journal Article
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Constantin MunteanuConstantin Munteanu
Constantin Munteanu
MRMariana Rotariu
Mariana Rotariu
MTMarius Alexandru Turnea
Marius Alexandru Turnea
LTLigia Gabriela TATARANU
Ligia Gabriela TATARANU
GDGabriela Dogaru
Gabriela Dogaru
GOGelu Onose
Gelu Onose
Lithium is a source of great scientific interest because although it has such a simple structure, relatively easy-to-analyze chemistry, and well-established physical properties, the plethora of effects on biological systems—which influence numerous cellular and molecular processes through not entirely explained mechanisms of action—generate a mystery that modern science is still trying to decipher. Lithium has multiple effects on neurotransmitter-mediated receptor signaling, ion transport, signaling cascades, hormonal regulation, circadian rhythm, and gene expression. The biochemical mechanisms of lithium action appear to be multifactorial and interrelated with the functioning of several enzymes, hormones, vitamins, and growth and transformation factors. The widespread and chaotic marketing of lithium salts in potions and mineral waters, always at inadequate concentrations for various diseases, has contributed to the general disillusionment with empirical medical hypotheses about the therapeutic role of lithium. Lithium salts were first used therapeutically in 1850 to relieve the symptoms of gout, rheumatism, and kidney stones. In 1949, Cade was credited with discovering the sedative effect of lithium salts in the state of manic agitation, but frequent cases of intoxication accompanied the therapy. In the 1960s, lithium was shown to prevent manic and also depressive recurrences. This prophylactic effect was first demonstrated in an open-label study using the “mirror” method and was later (after 1970) confirmed by several placebo-controlled double-blind studies. Lithium prophylaxis was similarly effective in bipolar and also unipolar patients. In 1967, the therapeutic value of lithemia was determined, included in the range of 0.5–1.5 mEq/L. Recently, new therapeutic perspectives on lithium are connected with improved neurological outcomes after ischemic stroke. The effects of lithium on the development and maintenance of neuroprotection can be divided into two categories: short-term effects and long-term effects. Unfortunately, the existing studies do not fully explain the lithium biological action mechanisms after ischemic stroke.

19 June 2025 in Water
Verified
Journal Article
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TSTraian Surdu
Traian Surdu
MSMonica Surdu
Monica Surdu
OSOlga SURDU
Olga SURDU
IFIrina Franciuc
Irina Franciuc
RTRoxana Tucmeanu
Roxana Tucmeanu
VTVlad Iustin Tica
Vlad Iustin Tica
Background: This study aimed to assess the feasibility of conducting a prospective study to evaluate histological changes in skin and muscle tissues after two weeks of balneotherapeutic intervention, as described in Romanian medical regulations. Methods: Thirty-five patients participated in this study, thirty of whom received balneotherapy (a cold mud ointment or a mud pack, or a mud bath, and/or a salted water bath) and five received hydrotherapy (the witness plot). Inclusion and exclusion criteria were applied. Twenty-four hours after discharge, a tegument and muscle biopsy were performed, and fragments were histologically prepared. Results: In the blade evidence analysis, the increased caliber and number of open capillaries and the presence of angiogenesis vessels were statistically significant (p = 0.001 < α = 0.05) for the cold mud ointment and mud pack compared with the witness and mud bath plots. The number of angiogenesis blood vessels was higher in the dermis (p < 0.05 *) with the mud pack plot and in the muscle with the mud cold ointment (p < 0.05). The histological study showed that two weeks of therapeutic intervention produced evidence-based proof in the dermis and muscle tissues, which was persistent at least twenty-four hours after the completion of the balneal course. The results encourage the team to continue the histological approach using modern techniques.

12 October 2022 in Healthcare
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Journal Article
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RTRoxana Tucmeanu
Roxana Tucmeanu
ATAlin Iulian Tucmeanu
Alin Iulian Tucmeanu
MIMadalina Gabriela Iliescu
Madalina Gabriela Iliescu
Justyna ZywiolekJustyna Zywiolek
Justyna Zywiolek
Zahid YousafZahid Yousaf
Zahid Yousaf
This research aims to examine specific issues that how healthcare institutions successfully manage IT projects after the deadly disease of COVID-19. The world’s healthcare institute changed its traditional way of treatment to IT-based equipment after COVID-19. Hence, this study investigated the how digital orientation helps healthcare institutes for successful management of IT. Our study identifies the critical role of digital orientation and innovation adaption in the successful management of IT. The mediating role of innovation adaption in the association between digital orientation and successful management of IT was also investigated. In total, 456 questionnaires were used for the collection of data from eight different healthcare centers. We selected participants through random sampling. Findings on the healthcare institution showed that successful management of IT is predicted through digital orientation. This study’s results proved that digital orientation impacts innovation adaption, and similarly, innovation adaption influences the successful management of IT. The outcomes show the mediating role of innovation adaption in the linkage between digital orientation and successful management of IT. Current research contributes to the existing literature through combined impacts of the digital orientation, innovation adaption, and successful management of IT through means of demonstrating how, when, and why digital orientation supports the successful management of IT. Moreover, innovation adaption performs a significant role in the extant digitalize world; thus, we chose innovation adaption as a mediator in this study.

7 June 2026 in Water
Verified
Journal Article
Open access
PDF file
TSTraian Surdu
Traian Surdu
MSMonica Surdu
Monica Surdu
IFIrina Franciuc
Irina Franciuc
RTRoxana Tucmeanu
Roxana Tucmeanu
ATAlin-Iulian Tucmeanu
Alin-Iulian Tucmeanu
VTVlad Iustin Tica
Vlad Iustin Tica
Background: Sapropelic mud from Techirghiol Lake has been used therapeutically under medical supervision for more than 170 years; however, its comprehensive physicochemical characterization under application-relevant conditions remains insufficiently documented. This study aimed to evaluate the physicochemical properties, mineral and organic composition, ion-exchange capacity, and potential therapeutic mechanisms of Techirghiol sapropelic mud. Methods: Mud samples were analyzed using standardized physicochemical and analytical techniques to determine pH, water content, granulometry, mineral composition, organic fraction, and trace elements. Results: The results indicate that Techirghiol mud is a highly hydrated alkaline peloid characterized by a complex mineral–organic system. Major elements included sodium, calcium, and magnesium, while trace elements such as manganese, iron, and zinc were present in relevant concentrations. The organic fraction, composed of humic substances, lipids, and proteins, reflected advanced but incomplete humification processes. Conclusions: The findings demonstrate the complex physicochemical composition of Techirghiol sapropelic mud and provide a scientific basis for further studies regarding its properties and applications.