1,010 results match your criteria: "" Transilvania" University of Brasov[Affiliation]"

The new maintenance engineers become self-taught and learn from daily dedication, from solving repetitive problems, from exchanging experiences with a colleague, from reading a recommended book and little else. Their own experience has been the main reference for maintenance professionals who have not given up and have become experts. And within the maintenance activities, sanitary engineering plays a very important role.

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Optogenetic therapy is a promising vision restoration method where light sensitive opsins are introduced to the surviving inner retina following photoreceptor degeneration. The cell type targeted for opsin expression will likely influence the quality of restored vision. However, a like-for-like pre-clinical comparison of visual responses evoked following equivalent opsin expression in the two major targets, ON bipolar (ON BCs) or retinal ganglion cells (RGCs), is absent.

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Background: Motivation is a variable that directly influences task orientation. Within the motivational sphere, the motivational climate determines whether a task is performed with an intrinsic or extrinsic.

Purpose: It has been observed that depending on motivational orientations, anxiety levels and task performance can be increased.

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Background: Older individuals are at a particular risk of sleep disorders, a loss of cognitive and emotional control, and a poor quality of life. Pharmaceutical therapy for these conditions is commonplace but has not been particularly effective, and relatively little research exists for their treatment using non-pharmacological approaches. The effectiveness of Physical Activity plus selected components of Amygdala and Insula Retraining (PAAIR) was tested to improve sleep quality, depression, working memory, and emotion regulation among older males.

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The present paper investigates the possibility of replacing the traditional L-type corner joint used in chair construction with a 3D printed connector, manufactured using the Fused Filament Fabrication (FFF) method and black PLA as filament. The connector was designed to assemble the legs with seat rails and stretchers, and it was tested under diagonal tensile and compression loads. Its performance was compared to that of the traditional mortise-and-tenon joint.

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The increasing demand for high-performance materials in industrial applications highlights the need for composites with enhanced mechanical and tribological properties. Basalt fiber-reinforced polymers (BFRP) are promising materials due to their superior strength-to-weight ratio and environmental benefits, yet their wear resistance and tensile performance often require further optimization. This study examines how adding copper (Cu) powder to epoxy resin influences the mechanical and tribological properties of BFRP composites.

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Background: The management of bipolar disorder during pregnancy presents a significant challenge, particularly regarding the safety and effectiveness of long-acting injectable (LAI) antipsychotics like aripiprazole. Despite the growing use of LAI antipsychotics in psychiatric disorders, data on their use during pregnancy are limited, especially for bipolar disorder. This study aimed to shed light on this issue through a scoping review.

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This retrospective study is the only one in the last 10 years from central Europe and provides a current picture of prevalence, new diagnostic modalities, new methods of surgical treatment, and also offers new insights into post-operative care. Triceps tendon rupture is the least reported among all the tendon injuries in the literature. In general, effective treatments for tendon injuries are lacking because the understanding of tendon biology lags behind that of the other components of the musculoskeletal system.

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Background: SARS-CoV-2 infection is generally associated with less severe forms of disease in children, where most cases only require symptomatic treatment. However, there is a paucity of information regarding the impact and clinical course of COVID-19 in neonate patients. This study aimed to analyze the epidemiological and clinical aspects of COVID-19 in this particular age group who were patients treated in our department.

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Introduction: With the significant increase in the number of social media users, the degree of cyberbullying has also increased in a directly proportional manner. Cyberbullying manifests itself in the commission of psychological abuses, teenagers being the most vulnerable.

Methods: The purpose of our paper was to analyze how the phenomenon of cyberbullying manifests in terms of frequency on social media platforms, while taking into account factors such as gender, and elements related to the behavior/reactions of witnesses and victims.

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Investigating the effect of geopolitical risk on defense companies' stock returns.

Heliyon

December 2024

Department of Engineering and Industrial Management, Transilvania University of Brașov, Brașov, Romania.

This study examines the influence of geopolitical risk (GPR) on the stock returns of 75 global representative defense companies. Our argument is based on the premise that the Crimean Peninsula's 2014 annexation was a turning point for the defense industry. The study uses wavelet coherence and phase differences to examine daily datasets spanning from January 1, 2014 to December 31, 2023.

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High-energy nuclear collisions create a quark-gluon plasma, whose initial condition and subsequent expansion vary from event to event, impacting the distribution of the eventwise average transverse momentum [P([p_{T}])]. Disentangling the contributions from fluctuations in the nuclear overlap size (geometrical component) and other sources at a fixed size (intrinsic component) remains a challenge. This problem is addressed by measuring the mean, variance, and skewness of P([p_{T}]) in ^{208}Pb+^{208}Pb and ^{129}Xe+^{129}Xe collisions at sqrt[s_{NN}]=5.

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Three-quarters of the planet's land surface has been altered by humans, with consequences for animal ecology, movements and related ecosystem functioning. Species often occupy wide geographical ranges with contrasting human disturbance and environmental conditions, yet, limited data availability across species' ranges has constrained our understanding of how human pressure and resource availability jointly shape intraspecific variation of animal space use. Leveraging a unique dataset of 758 annual GPS movement trajectories from 375 brown bears (Ursus arctos) across the species' range in Europe, we investigated the effects of human pressure (i.

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It is widely recognized that fuzzy number theory relies on the characteristic function. However, within the fuzzy realm, the characteristic function transforms into a membership function contingent upon the interval [0,1]. This implies that real numbers and intervals represent exceptional cases of fuzzy numbers.

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Effective population size () is one of the most important parameters in evolutionary biology, as it is linked to the long-term survival capability of species. Therefore, greatly interests conservation geneticists, but it is also very relevant to policymakers, managers, and conservation practitioners. Molecular methods to estimate rely on various assumptions, including no immigration, panmixia, random sampling, absence of spatial genetic structure, and/or mutation-drift equilibrium.

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Comprehensive electrical models for a wireless sensor network device.

Heliyon

December 2024

Transilvania University of Brașov, Department of Electronics and Computers, Faculty of Electrical Engineering and Computer Science, Brasov, 500036, Romania.

This paper proposes a novel circuit model of a Wireless Sensor Network (WSN) device. The model is designed to accurately represent the behavior of a WSN device operating in a duty cycle, capturing the essential characteristics of its components, including the microcontroller, sensor, transceiver, and power supply. The proposed model incorporates static and dynamic power consumption aspects, reflecting the energy usage patterns during various operational states such as sensing, processing, and communication.

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Article Synopsis
  • The study investigated 22 elite male mountain runners from Brazil, focusing on how specific genetic variants affect their performance and physiological responses during a 105-km ultramarathon.
  • Genotyping was done using saliva samples to analyze the ACTN3 R577X, ACE I/D, and CK MM A/G NcoI polymorphisms, and real-time measures of electrochemical and acid-base balance were recorded.
  • Results indicated that certain genotypes correlated with differences in potassium levels, hematocrit values, and pH, suggesting that these genetic variations play a significant role in athletes' physiological responses during extreme endurance events.
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We present comparative studies of sol-gel ITO multilayered films undoped and doped with Nb or Zn (4 at.%). The films were obtained by successive depositions of five layers using the dip-coating sol-gel method on microscopic glass, SiO/glass, and Si substrates.

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  • * The review focuses on the ischemic mechanisms involved in glaucoma, such as blood flow issues and signaling pathways that damage retinal nerve fibers.
  • * Understanding these ischemic processes could lead to new treatments and better patient care in managing glaucoma.
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Natural ingredients have been used in skincare products for thousands of years. The current focus is on novel natural bioactivities that shield the skin from UV rays and free radicals, among other damaging elements, while enhancing skin health. Free radicals significantly contribute to skin damage and hasten ageing by interfering with defence and restorative processes.

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  • The paper explores the integration of chemical reaction network theory and mathematical epidemiology, emphasizing their potential synergy to enhance understanding in related fields like ecology and virology.
  • It proposes a new definition of mathematical epidemiology models and introduces the next generation matrix approach to help researchers analyze stability in complex systems.
  • The authors aim to provide accessible learning resources, including a Mathematica package "bootcamp," to support newcomers to both mathematical epidemiology and chemical reaction networks.
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Collaborative Outcomes Study on Health and Functioning During Infection Times (COH-FIT): Global and Risk-Group Stratified Course of Well-Being and Mental Health During the COVID-19 Pandemic in Adolescents.

J Am Acad Child Adolesc Psychiatry

November 2024

University of Greenwich in London, United Kingdom; FHNW University of Applied Sciences and Arts Northwestern Switzerland, Switzerland; University of Texas Health Science Center, Houston, United States; Zucker Hillside Hospital, Northwell Health, and the Feinstein Institutes for Medical Research, New York. Electronic address:

Objective: To identify the COVID-19 pandemic impact on well-being/mental health, coping strategies, and risk factors in adolescents worldwide.

Method: This study was based on an anonymous online multi-national/multi-language survey in the general population (representative/weighted non-representative samples, 14-17 years of age), measuring change in well-being (World Health Organization-Five Well-Being Index [WHO-5]/range = 0-100) and psychopathology (validated composite P-score/range = 0-100), WHO-5 <50 and <29, pre- vs during COVID-19 pandemic (April 26, 2020-June 26, 2022). Coping strategies and 9 a priori- defined individual/cumulative risk factors were measured.

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Generative 3D Cardiac Shape Modelling for in-silico Trials.

Stud Health Technol Inform

November 2024

Advanta, Siemens SRL, Braşov, Romania.

We propose a deep learning method to model and generate synthetic aortic shapes based on representing shapes as the zero-level set of a neural signed distance field, conditioned by a family of trainable embedding vectors with encode the geometric features of each shape. The network is trained on a dataset of aortic root meshes reconstructed from CT images by making the neural field vanish on sampled surface points and enforcing its spatial gradient to have unit norm. Empirical results show that our model can represent aortic shapes with high fidelity.

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Article Synopsis
  • Sexual dysfunction (SD) is a widespread issue among people with Parkinson's disease (PD), but it is often underreported and untreated, especially in various ethnic groups due to cultural beliefs.
  • A study conducted in the UAE involving 513 patients found that SD was more prevalent in non-Emirati individuals, and it significantly impacted their quality of life and anxiety levels.
  • The research concluded that SD affects all ethnicities similarly and emphasized the importance of culturally sensitive counseling to improve awareness and treatment.
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  • * It reviews pharmacological treatments for common sleep issues like REM sleep behavior disorder (RBD), excessive daytime sleepiness (EDS), insomnia, and restless legs syndrome (RLS), emphasizing the use of melatonin, clonazepam, modafinil, and caffeine.
  • * The article suggests that optimizing dopaminergic treatments at night and maintaining good sleep hygiene can improve sleep quality, but more evidence is needed to widely recommend some of the therapies mentioned.
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