University of Belgrade

Injectable platelet-rich fibrin improves clinical, biochemical, and microbiological outcomes in periodontitis: a 6-month split-mouth randomized controlled trial

The study aimed to investigate the effects of scaling and root planing (SRP) in conjunction with injectable platelet-rich fibrin (i-PRF) in patients with periodontitis (Stage II–III, Grade B) 1, 3 and 6 months following the treatment. Using the “split-mouth” design, 30 patients w...

Validation of neonatal early warning score in medical and surgically critically ill newborns in tertiary care center

Neonatal Early Warning Scores (NEWS) are widely used to identify children at risk of clinical deterioration, but their performance may vary across clinical settings and patient populations. In this retrospective cohort from a tertiary university hospital, we evaluated the discrim...

Radium - from discovery to the present day – narrative review

Following its discovery, radium was initially promoted as a therapeutic agent for a wide range of conditions, including skin disorders, allergies, visual problems, joint pain, and as a general health-enhancing remedy. However, subsequent research demonstrated its significant radi...

Labeling of PET and PP nanoplastic test materials with non-leachable π-conjugated fluorescent polymers

<title>Abstract</title> Micro- and nanoplastic (MNP) particles are widely present in nature, mainly due to the extensive overuse of single-use plastics combined with poor waste management. Despite the diversity in the environment, many experimental studies still rely almost exclu...

Microvessel Density as an Adjunctive Immunohistochemical Parameter in the Differential Diagnosis of Parathyroid Carcinoma and Adenoma—An Immunohistochemical Study

Background/Objectives: Distinguishing parathyroid carcinoma from parathyroid adenoma remains a major diagnostic challenge because these tumors frequently share similar clinical, biochemical, radiological, and histopathological features. Accurate diagnosis is essential for appropr...

Nanoparticle Emissions of Ageing Diesel Cars with DPF—A First European PTI-like Field Study

This paper investigates nanoparticle emissions from older diesel passenger cars in four European countries outside of PTI (periodic technical inspection) testing facilities, using a methodology similar to that of the PTI. Per opportunistic sampling and voluntary testing, 618 dies...

Long-Term Respiratory Outcomes in Pediatric Patients Following COVID-19 Infection and Multisystem Inflammatory Syndrome in Children (MIS-C)

Background/Objectives: Although SARS-CoV-2 infection is usually mild in children, some develop severe respiratory disease (RD) or multisystem inflammatory syndrome in children (MIS-C). We evaluated long-term respiratory symptoms, pulmonary function, and cardiopulmonary exercise p...

Integrated Bioinformatic and Experimental Analysis of SLFN11 Expression and Clinical Significance in Locally Advanced Rectal Cancer

Background/Objectives: Schlafen 11 (SLFN11) encodes a DNA damage response protein implicated in sensitivity to DNA-damaging therapies and has been proposed as a predictive biomarker in several malignancies. This study aimed to characterize SLFN11 expression and evaluate its progn...

Electrospun Nanofibers Loaded with Verbena officinalis Extract as Multifunctional Bioactive Wound Dressings

Background/Objectives: Verbena officinalis has long been used in traditional medicine for treating skin disorders, yet its potential in advanced wound-dressing systems remains insufficiently explored. This study aimed to characterize V. officinalis extracts obtained using differe...

What Do Current Measures Tell Us About Apophenia? A Preregistered Systematic Review of the Measurement Properties of Apophenia Instruments

A preregistered systematic review of the quality of measurement properties of apophenia instruments

A Composite Quality Index and Multi-Criteria Decision-Support Framework for Evaluating Complaint Resolution Performance of Express Delivery Operators

The rapid expansion of the express delivery sector, driven by the growth of e-commerce, has increased the importance of effective complaint management as an integral component of service quality and consumer protection. Although operational service performance and complaint handl...

Fixed-Point Theorem via a Composite Matkowski Comparison Function for a Generalized Ćirić–Reich–Rus Interpolative Contraction with Iterates and Applications to Fractional and Nonlinear Integral Equations

This paper establishes existence and uniqueness results for a generalized Ćirić–Reich–Rus interpolative contraction involving distinct forward horizons p,q&gt;1 and a delay parameter r&gt;1. By employing a Matkowski comparison function φ and introducing a composite condition Ψ(t)...

A Computational Framework for the Design and Development of Isoform Selective PI3Kα Inhibitors as Novel Anticancer Agents

Background: Phosphatidylinositol 3-kinase (PI3K) is a promising anticancer drug target, and selective PI3Kα inhibition may provide both efficacy and an improved safety profile. This study aimed to design new potentially selective PI3Kα inhibitors using computer-aided drug design...

Non-isothermal reduction of TeO2 by hydrogen: Integrated distributed-activation-energy-model (DAEM)-shrinking-core-model (SCM) kinetic modeling and enthalpy-entropy compensation analysis

The non-isothermal reduction of TeO 2 (tellurium dioxide) by hydrogen (H 2 ) was investigated using thermal analysis (TG/DTG) techniques at multiple heating rates (1.0, 4.8, 9.6, and 18.8 K/min). Reaction kinetics were evaluated through an integrated Distributed Activation Energy...

Trace element accumulation in bryophytes from Allchar (North Macedonia): contamination or genuine hyperaccumulation?

Abstract Main conclusion Genuine accumulation of metals/metalloids in bryophytes is limited and highly susceptible to surficial contamination with soil particles. Washing with an apolar solvent removes most surficial contamination prior to elemental analysis. Abstract Bryophytes...

The Zooplankton International Geospatial dataset: A global repository of spatiotemporal freshwater zooplankton community composition data from lakes and reservoirs to support ecological research

Abstract Zooplankton transfer substantial energy in aquatic food webs and are used as indicators of environmental change. Syntheses of zooplankton community dynamics globally require datasets that span a wide range of environmental gradients; however, these datasets are limited d...

The Institutional Plateau in Microcredential Adoption: A Hybrid Review of Peer-Reviewed Evidence and Practitioner Reports in Higher Education

Micro-credentials have attracted intense scholarly and policy attention, yet recent practitioner evidence, most notably the 2026 UPCEA survey of US institutions, the catalyst for this review, suggests that institutional commitment has plateaued even as individual engagement deepe...

Abandoning democracy for the nation

In an era defined by the paradoxical coexistence of popular support for democracy and the practical erosion of its core tenets, Filip Milacic’s Abandoning Democracy for the Nation. arrives as a tim...

Characterization of signed graphs with rank at most four using star complements

The technique of star complements for a fixed graph eigenvalue μ, together with the associated notion of star sets, is a powerful method originally developed for constructing large unsigned graphs from smaller subgraphs. This approach has since been extended to signed graphs. In...

Perioperative tranexamic acid and postoperative haematuria after transvesical prostatectomy: a prospective observational cohort study

Bleeding and postoperative haematuria remain clinically relevant after open simple prostatectomy. Tranexamic acid (TXA) may reduce bleeding through antifibrinolytic activity, but evidence in open prostate surgery for benign prostatic obstruction is limited. This study evaluated p...