<p><strong>Introduction.</strong> With the development of medical and health sciences, research problems have become more complex, and relying solely on quantitative or qualitative research approaches is no longer sufficient. The aim of this paper was to map the progress and trends in the scientific literature regarding the application of mixed studies in medical and health sciences.</p> <p><strong>Methods.</strong> Bibliometric analysis was applied to meet the established goals. The Dimensions database was selected for literature search. The analysis unit consisted of 485 publications of various types, and the VosViewer program was employed for the analysis.</p> <p><strong>Results. </strong>The results have shown that this topic in science has experienced an exponential decline in the last year. Additionally, the most productive authors, journals, and countries have been identified, along with their collaborative networks through visual co-citation analysis. Based on the analysis of word co-occurrence, we can conclude that words like &ldquo;combined studies,&rdquo; &ldquo;problem,&rdquo; &ldquo;factors,&rdquo; &ldquo;community&rdquo; are most frequently repeated, indicating that the topics addressed in this domain mainly focus on investigating and addressing numerous issues in the field of medical and health sciences.</p> <p><strong>Conclusion. </strong>Although the results indicate a decreased interest in this topic in the last year, it does not diminish the significance of this research. Progress in medical and health sciences requires a comprehensive approach to research, which includes both quantitative and qualitative methods, such as mixed studies. Understanding the current trends and available resources for researchers assists in achieving better outcomes and improving the quality of healthcare practice.</p>

<p><strong>Introduction. </strong>Frailty is common in elderly persons and carries a high risk of poor health outcomes, including increased mortality, institutionalization, falls, and hospitalization. The aim of the work was to determine the risk factors for frailty in elderly persons.</p> <p><strong>Methods. </strong>The research was conducted in Bijeljina and Foča, in the period from February to June 2022, and was approved by the Ethics Committee of the Faculty of Medicine in Foča. A total of 243 respondents over the age of 65 took part in the research. When it comes to the instruments, the sociodemographic questionnaire, the EQ-5D-5L health questionnaire, the general sarcopenia rapid screening questionnaire SARC-F and the Kessler scale for the assessment of psychological distress were used.</p> <p><strong>Results.</strong> There were 43.6% of males and 56.4% of females participating in the research. One quarter (25%) of respondents evaluated their health as weak. Sarcopenia was identified in 28% of respondents, while 18.1% had a moderate and 11.9% a serious disorder in the field of psychological distress.</p> <p><strong>Conclusion. </strong>The presence of psychological distress and sarcopenia in a high percentage, as well as weak health status in the people over 65, is evident, which represents potential risk factors for frailty.</p>

<p><strong>Introduction. </strong>The improvement of new genetic testing strategies are getting to be progressively integrated into different parts of medicine. Progress has not been accompanied by the satisfactory level of genetic education but it has been accompanied with many ethical issues concering testing among medical students, doctors and the common population. Subsequently, the requirements for an adequate education in genetics for each group are expanding. The main goal of this paper is to examine attitudes regarding different aspects of genetic testing, and to determine differences in attitudes with respect to socio-demographic characteristics among the employees at the Faculty of Medicine in Foča, University of East Sarajevo.</p> <p><strong>Methods.</strong> Sixty-one employees of four study programs of the Faculty of Medicine in Foča participated in the research. An anonymous survey was conducted based on the voluntary consent of the respondents. It included two parts. The first part of the survey included socio-demographic questions (age, gender, educational level). The second part consisted of eight questions about genetic testing, which were related to the ethical justification of genetic testing.</p> <p><strong>Results.</strong> Out of the total number of respondents, 90.2% of respondents would undergo genetic testing for health reasons. A significantly higher number of respondents who had a master&rsquo;s degree (96.2%) would undergo genetic testing, compared to (88.9%) respondents who had an undergraduate degree (p=0.001). A significantly larger number of older respondents (29.6% over the age of 36) considered abortion justified in case of prenatal diagnosis of cancer at a later age, compared to 8.8% of the respondents belonging to the younger age group (from 26 to 35) (p=0.036).</p> <p><strong>Conclusion.</strong> We have shown that there is a different understanding among the population of different educational status and different age. Further on in the near future, it is our opinion that seminars should be organized regarding this science, in order to promote its importance.</p>

Transport properties of doped conjugated polymers (CPs) have been widely analyzed with the Gaussian disorder model (GDM) in conjunction with hopping transport between localized states. These models reveal that even in highly doped CPs, a majority of carriers are still localized because dielectric permittivity of CPs is well below that of inorganic materials, making Coulomb interactions between carriers and dopant counterions much more pronounced. However, previous studies within the GDM did not consider the role of screening the dielectric interactions by carriers. Here we implement carrier screening in the Debye-Hückel formalism in our calculations of dopant-induced energetic disorder, which modifies the Gaussian density of states (DOS). Then we solve the Pauli master equation using Miller-Abrahams hopping rates with states from the resulting screened DOS to obtain conductivity and Seebeck coefficient across a broad range of carrier concentrations and compare them to measurements. Our results show that screening has significant impact on the shape of the DOS and consequently on carrier transport, particularly at high doping. We prove that the slope of Seebeck coefficient versus electric conductivity, which was previously thought to be universal, is impacted by screening and decreases for systems with small dopant-carrier separation, explaining our measurements. We also show that thermoelectric power factor is underestimated by a factor of ∼10 at higher doping concentrations if screening is neglected. We conclude that carrier screening plays a crucial role in curtailing dopant-induced energetic disorder, particularly at high carrier concentrations.

In FMCW automotive radar applications, it is often a challenge to design a chirp sequence that satisfies the requirements set by practical driving scenarios and simultaneously enables high range resolution, large maximum range, and unambiguous velocity estimation. To support long-range scenarios the chirps should have a sufficiently long duration compared to their bandwidth. At the same time, the long chirps result in ambiguous velocity estimation for targets with high velocity. The problem of velocity ambiguity is often solved by using multiple chirp sequences with co-prime delay shifts between them. However, coherent processing of multiple chirp sequences is not possible using classical spectral estimation techniques based on Fast Fourier Transform (FFT). This results in statistically not efficient velocity estimation and loss of processing gain. In this work, we propose an algorithm that can jointly process multiple chirp sequences and resolve possible ambiguities present in the velocities estimates. The resulting algorithm is statistically efficient, and gridless. Furthermore, it increases the resolution of velocity estimation beyond the natural resolution due to its super-resolution properties. These results are confirmed by both numerical simulations and experiments with automotive radar IC.

Bridge crane is exposed to dynamic loads during its non-stationary operations (acceleration and braking). Analyzing these operations, one can determine unknown impacts on the dynamic behavior of bridge crane. These impacts are taken into consideration using selected coefficients inside the dynamic model. Dynamic modelling of a bridge crane in vertical plane is performed in the operation of the hoist mechanism. The dynamic model is obtained using data from a real bridge crane system. Two cases have been analyzed: acceleration of a load freely suspended on the rope when it is lifted and acceleration of a load during the lowering process. Physical quantities that are most important for this research are the values of stress and deformation of main girders. Size of deformation at the middle point of the main crane girder is monitored and analyzed for the above-mentioned two cases. Using the values of maximum deformation, one also obtains maximum stress values in the supporting construction of the crane.

. The progress of additive manufacturing technology brings about many new questions and challenges. Additive manufacturing technology allows for designing machine elements with smaller mass, but at the same time with the same stiffness and stress loading capacity. By using additive manufacturing it is possible to produce gears in the form of shell shape with infill inside. This study is carried out as an attempt to answer the question which type of infill, and with how much density, is optimal for a spur gear tooth to ensure the best stiffness and stress loading capacity. An analysis is performed using numerical finite element method. Two new infill structures are proposed: triangular infill with five different densities and topology infill designed according to the already known results for 2D cantilever topology optimization, known as Michell structures. The von Mises stress, displacements and bending stiffness are analyzed for full body gear tooth and for shell body gear tooth with above mentioned types of infill structure.

Importance Mechanisms contributing to disability accumulation in multiple sclerosis (MS) are poorly understood. Blood neurofilament light chain (NfL) level, a marker of neuroaxonal injury, correlates robustly with disease activity in people with MS (MS); however, data on the association between NfL level and disability accumulation have been conflicting. Objective To determine whether and when NfL levels are elevated in the context of confirmed disability worsening (CDW). Design, Setting, and Participants This study included 2 observational cohorts: results from the Expression, Proteomics, Imaging, Clinical (EPIC) study at the University of California San Francisco (since 2004) were confirmed in the Swiss Multiple Sclerosis Cohort (SMSC), a multicenter study in 8 centers since 2012. Data were extracted from EPIC in April 2022 (sampling July 1, 2004, to December 20, 2016) and SMSC in December 2022 (sampling June 6, 2012, to September 2, 2021). The study included 2 observational cohorts in tertiary MS centers. All participants of both cohorts with available NfL results were included in the study, and no eligible participants were excluded or declined to participate. Exposure Association between NfL z scores and CDW. Main Outcome Measures CDW was defined as Expanded Disability Status Scale (EDSS) worsening that was confirmed after 6 or more months and classified into CDW associated with clinical relapses (CDW-R) or independent of clinical relapses (CDW-NR). Visits were classified in relation to the disability worsening events into CDW(-2) for 2 visits preceding event, CDW(-1) for directly preceding event, CDW(event) for first diagnosis of EDSS increase, and the confirmation visit. Mixed linear and Cox regression models were used to evaluate NfL dynamics and to assess the association of NfL with future CDW, respectively. Results A total of 3906 EPIC visits (609 participants; median [IQR] age, 42.0 [35.0-50.0] years; 424 female [69.6%]) and 8901 SMSC visits (1290 participants; median [IQR] age, 41.2 [32.5-49.9] years; 850 female [65.9%]) were included. In CDW-R (EPIC, 36 events; SMSC, 93 events), NfL z scores were 0.71 (95% CI, 0.35-1.07; P < .001) units higher at CDW-R(-1) in EPIC and 0.32 (95% CI, 0.14-0.49; P < .001) in SMSC compared with stable MS samples. NfL elevation could be detected preceding CDW-NR (EPIC, 191 events; SMSC, 342 events) at CDW-NR(-2) (EPIC: 0.23; 95% CI, 0.01-0.45; P = .04; SMSC: 0.28; 95% CI, 0.18-0.37; P < .001) and at CDW-NR(-1) (EPIC: 0.27; 95% CI, 0.11-0.44; P < .001; SMSC: 0.09; 95% CI, 0-0.18; P = .06). Those findings were replicated in the subgroup with relapsing-remitting MS. Time-to-event analysis confirmed the association between NfL levels and future CDW-R within approximately 1 year and CDW-NR (in approximately 1-2 years). Conclusions and Relevance This cohort study documents the occurrence of NfL elevation in advance of clinical worsening and may hint to a potential window of ongoing dynamic central nervous system pathology that precedes the diagnosis of CDW.

This study aims to evaluate two distinct approaches for fiber radius estimation using diffusion‐relaxation MRI data acquired in biomimetic microfiber phantoms that mimic hollow axons. The methods considered are the spherical mean power‐law approach and a T2‐based pore size estimation technique.

SAŽETAK Perfuzija se odnosi na isporuku kiseonika i hranljive materije u tkiva putem protok krvi i jedan je od najosnovnijih fiziološki parametri. Poremećaji perfuzije takođe čine većinu vodeći uzroci medicinskog invaliditeta i mortalitet. Dok mjerenja od perfuzije imaju direktnu dijagnostičku vrijednost u vaskularni poremećaji, mjerenja perfuzije takođe služe kao biomarkeri za a širi spektar fizioloških i patofizioloških funkcije. Bliska sprega između cerebralnog krvotoka i metabolizma omogućava regionalnu funkciju mozga biti procijenjen mjerenjima od cerebralnu perfuziju i povećanu vaskularnost neoplazmi omogućava perfuziju tumora da se koristi kao mjera tumora stepena i za praćenje odgovora na tumor terapija. U oblasti MRI, najviše ljudi povezuju pojam perfuzije snimanje s dinamičkim kontrastom osjetljivosti snimanje pomoću kontrasta za opuštanje agent. ASL Perfuzija je tehnika MR perfuzije koja ne zahtjeva intravensku primjenu kontrastnog sredstva ( za razliku od DSc I DCE perfuzije). Umjesto toga, koristi sposobnost MRI-a da magnetski označi arterijsku krv. Parametar koji se najčešče izvodi je cerebralni protok krvi (CBF). ASL je vrlo pogodna tehnika za upotrebu u pedijatriji, u kojoj upotreba radioaktivnih tragova moze biti ograničena. Također je sigurna metoda za primjenu kod pacijenata sa oštečenom bubrežnom funkcijom.

There is an increasing demand for green plant walls in indoor environments because of their multifaced benefits, such as aesthetic appeal, indoor air quality improvement, or psychological well-being. Mosses are believed to be excellent for these walls due to their easy application and maintenance. However, so far there is no evidence for their indoor survival. In this study, we tested the moss species Hypnum cupressiforme, Bryachythecium rutabulum, Eurrhynchium angustirete, Thuidium tamariscinum, Streblotrichum convolutum, Syntrichia ruralis, and Ceratodon purpureus for indoor use in living moss walls. We evaluated their vitality through the monitoring of leaf coloration over a twelve month period, subjecting them to varying temperature ranges (14–20 °C), humidity levels (60–100%), and diverse irrigation methods (drip and spray irrigation, 300–1500 mL per day) within controlled climate chambers. Depending on the combination of these variables, mosses survived up to six months. Hypnum cupressiforme and Ceratodon purpureus performed best. However, as the time span of survival was limited, the use of living mosses for indoor purposes at the current stage cannot be recommended. An additional problem is that the requisition of living material such as in the culturing of moss under horticultural conditions is difficult and harvesting from natural environments is detrimental to most habitats.

Background The absence of the susceptibility vessel sign (SVS) in patients treated with mechanical thrombectomy (MT) is associated with poor radiological and clinical outcomes after 3 months. Underlying conditions, such as cancer, are assumed to influence SVS status and could potentially impact the long-term outcome. We aimed to assess SVS status as an independent predictor of long-term outcomes in MT-treated patients. Methods SVS status was retrospectively determined in consecutive MT-treated patients at a comprehensive stroke center between 2010 and 2018. Predictors of long-term mortality and poor functional outcome (modified Rankin Scale (mRS) ≥3) up to 8 years were identified using multivariable Cox and logistic regression, respectively. Results Of the 558 patients included, SVS was absent in 13% (n=71) and present in 87% (n=487) on baseline imaging. Patients without SVS were more likely to have active cancer (P=0.003) and diabetes mellitus (P<0.001) at the time of stroke. The median long-term follow-up time was 1058 days (IQR 533–1671 days). After adjustment for active cancer and diabetes mellitus, among others, the absence of SVS was associated with long-term mortality (adjusted HR (aHR) 2.11, 95% CI 1.35 to 3.29) and poor functional outcome in the long term (adjusted OR (aOR) 2.90, 95% CI 1.29 to 6.55). Conclusion MT-treated patients without SVS have higher long-term mortality rates and poorer long-term functional outcome. It appears that this association cannot be explained by comorbidities alone, and further studies are warranted.