Analytical model of friction at low shear rates for soft materials in 3D printing.

Background: The biological properties of silicone elastomers such as polydimethylsiloxane (PDMS) have widespread use in biomedicine for soft tissue implants, contact lenses, soft robots, and many other small medical devices, due to its exceptional biocompatibility. Additive manufacturing of soft materials still has significant challenges even with major advancements that have occurred in development of these technologies for customized medical devices and tissue engineering.

Objective: The aim of this study was to develop a mathematical model of tangential stress in relation to shear stress, shear rate, 3D printing pressure and velocity, for non-Newtonian gels and fluids that are used as materials for 3D printing.

Investigation of the OAM EM wave tissue irradiation at millimeter-wave frequencies.

Recently, there has been an increase of interest in the use of electromagnetic (EM) waves with helical wavefronts, known as the orbital angular momentum (OAM) waves. Applications in the field of biomedicine have been foreseen, such as medical imaging and diagnosis, deep-tissue imaging, biosensing, and communication with medical implants. Other possible applications include various localized tissue treatments or tissue ablation.

Micromorphological features and interleukin 6, 8, and 18 expressions in post-mortem lung tissue in cases with acute respiratory distress syndrome.

The purpose of this study was to analyze the presence of interleukins 6, 8, and 18 in post-mortem lung tissue of subjects deceased due to polytrauma. In addition to this, we have described different micromorphological features of lung tissue in ARDS cases associated with fatal traffic trauma. A total of 18 autopsy cases with ARDS after polytrauma and 15 control autopsy cases were analyzed in this study.

Case Report: Post-mortem Histopathological and Molecular Analyses of the Very First Documented COVID-19-Related Death in Europe.

In Europe, the first case of coronavirus disease (COVID-19) and the first COVID-19-related death were reported in France on January 24th and February 15th, 2020, respectively. Officially, the first case of COVID-19 infection in the Republic of Serbia was registered on March 6th. Herein, we presented the first case of retrospective detection of the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) in the post-mortem-obtained vitreous humor (VH), which took place on February 5th, 2020.

Death Related to Elective Nasal Polypectomy: Case Report.

The investigation of deaths that are suspected to be related to medical therapy present several challenges for a forensic pathologist. We present a case of an otherwise healthy 58-year-old woman with multiple nasal polyps who underwent nasal polypectomy. The operation was initially considered successful.

Aortopulmonary fistula related death - forensic implications.

A 79-year-old man with a history of arterial hypertension, insulin-dependent diabetes mellitus, renal insufficiency and thoracic endovascular aortic repair (TEVAR) was brought to the emergency department, following an episode of oliguria and urine retention. During chest X-ray he suddenly collapsed and died. Autopsy revealed a large atherosclerotic saccular thoracic aortic aneurysm whose right lateral wall firmly adhered to the right lung.

Copper-Beaten Skull Appearance as a Response of Chronically Increased Intracranial Pressure.

We present a case of 19-year-old female patient, who was injured in childhood and subsequently developed hydrocephalus, chronic elevation of intracranial pressure (ICP), and a copper-beaten skull appearance. Chronic hydrocephalus leads to an increase in intraventricular pressure, causing ventricular expansion and dislocation of adjacent cerebral structures. According to literature data, it has been hypothesized that chronically elevated ICP in persons with craniosynostosis, and other developmental structural abnormalities of the skull, may induce bone remodeling.

Forensic Implications of Sternal Bone Marrow Biopsy Fatalities: Autopsy Case Report.

Iatrogenic penetrating injuries of the thoracic aorta are rare. When surgical treatment is delayed or unavailable, they are associated with high mortality. Herein we present a case of a 36-year-old woman who had a sternal marrow biopsy performed due to laboratory-confirmed pancytopenia.

Decapitation in reality and fine art: A review.

The aim of our study was to examine all types of decapitation from forensic literature, including our own case, and to analyze the presentation of beheading in fine art, popular literature, and music. To do this, over 200 scientific articles in regard to decapitation were analyzed, as well as more than 10,000 artworks, and several hundreds of literary works and music pieces. In addition, a macroscopic examination of a decapitated victim was performed.

Iatrogenic tracheoarterial fistula: Case report and literature review.

Tracheo-innominate fistula is a rare but recognised life-threatening complication most commonly associated with prolonged endotracheal intubation. We report the case of a 16-year-old boy who developed a tracheo-innominate fistula secondary to the prolonged intubation after a pool accident. After 16 days of hospitalisation, the patient died as a consequence of a massive haemorrhage into the tracheobronchial tree and asphyxia.

Mathematical model in post-mortem estimation of brain edema using morphometric parameters.

Current autopsy principles for evaluating the existence of brain edema are based on a macroscopic subjective assessment performed by pathologists. The gold standard is a time-consuming histological verification of the presence of the edema. By measuring the diameters of the cranial cavity, as individually determined morphometric parameters, a mathematical model for rapid evaluation of brain edema was created, based on the brain weight measured during the autopsy.

Differential expression and localization of Ankrd2 isoforms in human skeletal and cardiac muscles.

Four human Ankrd2 transcripts, reported in the Ensembl database, code for distinct protein isoforms (360, 333, 327 and 300 aa), and so far, their existence, specific expression and localization patterns have not been studied in detail. Ankrd2 is preferentially expressed in the slow fibers of skeletal muscle. It is found in both the nuclei and the cytoplasm of skeletal muscle cells, and its localization is prone to change during differentiation and upon stress.

Using multi-criteria decision making for selection of the optimal strategy for municipal solid waste management.

Multi-criteria decision making (MCDM) is a relatively new tool for decision makers who deal with numerous and often contradictory factors during their decision making process. This paper presents a procedure to choose the optimal municipal solid waste (MSW) management system for the area of the city of Kragujevac (Republic of Serbia) based on the MCDM method. Two methods of multiple attribute decision making, i.

Accurate Completion of Medical Report on Diagnosing Death.

Diagnosing death and issuing a Death Diagnosing Form (DDF) represents an activity that carries a great deal of public responsibility for medical professionals of the Emergency Medical Services (EMS) and is perpetually exposed to the control of the general public. Diagnosing death is necessary so as to confirm true, to exclude apparent death and consequentially to avoid burying a person alive, i.e.

Not to Declare Dead Someone Still Alive - Case Reports.

Introduction: Diagnosing death represents an activity that carries a great deal of public responsibility for medical professionals and is continually exposed to the control of citizens and media. Although this is a taboo subject in medical circles, unfortunately in medical practice there are situations when the physician issues a death diagnosis form without even examining the person or for an already buried person. Such physician's action is impermissible and it leads to the possibility of professional and criminal law punishment.

Conformal cubical 3D transformation-based metamaterial invisibility cloak: Erratum.

A correction to the definition of the constant a introduced after Eq. (4) in [J. Opt.

Hippocampal antioxidative system in mesial temporal lobe epilepsy.

Objective: To examine antioxidative system in hippocampi of patients with mesial temporal lobe epilepsy associated with hippocampal sclerosis (mTLE-HS).

Methods: Activity and levels of antioxidative enzymes-catalase (CAT), glutathione peroxidase (GPx), glutathione reductase (GR), manganese superoxide dismutase (MnSOD), and copper-zinc superoxide dismutase (CuZnSOD)-were assessed in hippocampi of nine pharmacoresistant mTLE-HS patients (mean age 37.7 ± [standard deviation] 6.

Profiling of skeletal muscle Ankrd2 protein in human cardiac tissue and neonatal rat cardiomyocytes.

Muscle-specific mechanosensors Ankrd2/Arpp (ankyrin repeat protein 2) and Ankrd1/CARP (cardiac ankyrin repeat protein) have an important role in transcriptional regulation, myofibrillar assembly, cardiogenesis and myogenesis. In skeletal muscle myofibrils, Ankrd2 has a structural role as a component of a titin associated stretch-sensing complex, while in the nucleus it exerts regulatory function as transcriptional co-factor. It is also involved in myogenic differentiation and coordination of myoblast proliferation.

[Death caused by heat stroke: case report].

Introduction: Heat stroke is the most dangerous among numerous disorders caused by elevated environmental temperature. It is characterized by an increased body temperature of over 40 degrees C, the dysfunction of the central nervous system and the development of multiple organ failure. The aim of this paper was to highlight problems in the clinical and post-mortal diagnosis of fatal heat stroke.

Metals and electrolytes in sclerotic hippocampi in patients with drug-resistant mesial temporal lobe epilepsy.

An altered metal and electrolyte profile has been implicated in the pathologic mechanisms of chronic epilepsy; however, no study has comprehensively measured hippocampal concentrations of these elements in patients with mesial temporal lobe epilepsy and hippocampal sclerosis (mTLE-HS). We therefore analyzed hippocampi of 24 patients with drug-resistant mTLE-HS (mean age 35.6 ± 9.

[Drunken state in fatally injured drivers of motor vehicles].

Introduction: Consumption of alcohol may be an important causative factor in traffic accidents, particularly in categories of drivers and pedestrians.

Objective: Analysis of frequency and other important medicolegal characteristics of drunken state of motor vehicles drivers.

Methods: We analyzed autopsibs performed at the Institute of Forensic Medicine Belgrade during 2008 and 2009.