Projekt strukture i analiza čvrstoće palube za slijetanje helikoptera

Paluba ili platforma za slijetanje helikoptera je za većinu trgovačkih, putničkih i posebice specijalnih tipova brodova (offshore, istraživački) od velike važnosti, kako za komunikaciju tako i za moguće hitne situacije. Navedeno naročito dolazi do izražaj kod brodova koji se bave složenim offshore operacijama u teškim vremenskim prilikama i stanjima mora. Uvodno su prikazane vrste i pregled projektnih parametara platforme za slijetanje helikoptera. Za odabrani tip istraživačkog broda napravljen je projekt strukture, računalni model i analiza čvrstoće. Korištena su pravila i propisi klasifikacijskog društva American Bureau of Shipping za određivanje minimalnih strukturnih dimenzija, kao i za definiranje projektnih stanja opterećenja, te konačno kriterija za potvrdu projekta. Za izradu računalnog modela i analizu strukture metodom konačnih elemenata korišten je 3D CAD programski paket Inventor. Definirani su najgori slučajevi opterećenja, te su na osnovi izvršene analize usvojene konačne dimenzije strukture

HELIDECK STRUCTURE DESIGN

Paluba ili platforma za slijetanje helikoptera je za većinu trgovačkih, putničkih i posebice specijalnih tipova brodova (offshore, istraživački) od velike važnosti, kako za komunikaciju tako i za moguće hitne situacije. Navedeno naročito dolazi do izražaj kod brodova koji se bave složenim offshore operacijama u teškim vremenskim prilikama i stanjima mora. Uvodno su prikazane vrste i pregled projektnih parametara platforme za slijetanje helikoptera. Za odabrani tip istraživačkog broda napravljen je projekt strukture, računalni model i analiza čvrstoće. Korištena su pravila i propisi klasifikacijskog društva American Bureau of Shipping za određivanje minimalnih strukturnih dimenzija, kao i za definiranje projektnih stanja opterećenja, te konačno kriterija za potvrdu projekta. Za izradu računalnog modela i analizu strukture metodom konačnih elemenata korišten je 3D CAD programski paket Inventor. Definirani su najgori slučajevi opterećenja, te su na osnovi izvršene analize usvojene konačne dimenzije strukture.The deck or platform for helicopter landing for most commercial, passenger and particularly special types of ships (offshore, research) is of great importance, both for communication and for possible emergency situations. The above is particularly true with ships engaged in complex offshore operations in heavy weather and sea conditions. Introduction presents an overview of the types and design parameters platform for helicopter landing. For selected type of research ship structural project of the helideck is made as well as computer model and strength analysis. The rules and regulations of the classification society American Bureau of Shipping are used for determining the minimum structural dimensions, as well as to define the project loads, and finally the criteria for validation of the structure. To create a computer model and analyze the structure by the finite element method, 3D CAD software package Inventor was used. The worst load cases are defined and the final dimensions of the structure are adopted based on the analysis results

HELIDECK STRUCTURE DESIGN

Paluba ili platforma za slijetanje helikoptera je za većinu trgovačkih, putničkih i posebice specijalnih tipova brodova (offshore, istraživački) od velike važnosti, kako za komunikaciju tako i za moguće hitne situacije. Navedeno naročito dolazi do izražaj kod brodova koji se bave složenim offshore operacijama u teškim vremenskim prilikama i stanjima mora. Uvodno su prikazane vrste i pregled projektnih parametara platforme za slijetanje helikoptera. Za odabrani tip istraživačkog broda napravljen je projekt strukture, računalni model i analiza čvrstoće. Korištena su pravila i propisi klasifikacijskog društva American Bureau of Shipping za određivanje minimalnih strukturnih dimenzija, kao i za definiranje projektnih stanja opterećenja, te konačno kriterija za potvrdu projekta. Za izradu računalnog modela i analizu strukture metodom konačnih elemenata korišten je 3D CAD programski paket Inventor. Definirani su najgori slučajevi opterećenja, te su na osnovi izvršene analize usvojene konačne dimenzije strukture.The deck or platform for helicopter landing for most commercial, passenger and particularly special types of ships (offshore, research) is of great importance, both for communication and for possible emergency situations. The above is particularly true with ships engaged in complex offshore operations in heavy weather and sea conditions. Introduction presents an overview of the types and design parameters platform for helicopter landing. For selected type of research ship structural project of the helideck is made as well as computer model and strength analysis. The rules and regulations of the classification society American Bureau of Shipping are used for determining the minimum structural dimensions, as well as to define the project loads, and finally the criteria for validation of the structure. To create a computer model and analyze the structure by the finite element method, 3D CAD software package Inventor was used. The worst load cases are defined and the final dimensions of the structure are adopted based on the analysis results

Cardiovascular comorbidities in epileptology

Epilepsy is one of the most common neurological diseases affecting around 50 million people worldwide. Modern scientific and professional literature recognizes comorbidities as an integral part of epilepsy, with the goal of defining optimal treatment. A series of studies from 2002 to date have confirmed a high prevalence of heart diseases in all age groups of adult patients with epilepsy, and nearly three times higher risk of malignant arrhythmias and sudden cardiac death, compared to the general population. Currently, research is increasingly being focused on elucidating the long-term connection between epilepsy and the cardiovascular system, and in 2020 the term ‘’epileptic heart’’ was first introduced, describing a heart and coronary vasculature damaged by chronic epilepsy. Plausible pathophysiological mechanisms include the cardiotoxic effects of catecholamines and repeated hypoxemia, but also the use of antiseizure medications (ASMs) associated with hyperlipidemia and arrhythmogenic effects, which could make an additional contribution to the electromechanical dysfunction of the heart. People over 60 years of age make up the largest group of patients with newly diagnosed epilepsy and represent a particular challenge for epileptologists, due to the frequent presence of multimorbidity and polypharmacy, especially in the domain of the cardiovascular system. The International League Against Epilepsy (ILAE) Task Force on Epilepsy in the elderly proposed guidelines that state that clinicians need to approach an elderly person as they would a woman of childbearing potential, and emphasize the importance of considering factors such as adverse effects and pharmacokinetic interactions when choosing ASMs, as well as the necessity for an individualized, multidisciplinary and patient-oriented approach. In addition, recent studies draw attention to the need for a routine cardiological assessment when treating patients with epilepsy, and highlight the importance of electrocardiogram (ECG) in determining the initial cardiovascular risk, as well as monitoring the impact of epileptic seizures and ASMs on the structural integrity of the heart and its vasculature