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The authors present their vision of the international and Ukraine’s national security in the 21st century context, analyze new challenges and security threats searching for the reason of collapse of the modern security...

Porous ceramics are widely used in fields such as heat insulation, filtration, sound absorption, and catalysis due to their good chemical stability, as well as the high permeability and large specific surface area of por...

Materias / palabras clave: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials

Reconstructing phylogenies from intraspecific data (such as human mitochondrial DNA variation) is often a challenging task because of large sample sizes and small genetic distances between individuals. The resulting mult...

A new method called the neighbor-joining method is proposed for reconstructing phylogenetic trees from evolutionary distance data. The principle of this method is to find pairs of operational taxonomic units (OTUs [= nei...

Materias / palabras clave: finite element modelling, aluminium, bonding, welding, hybrid joining; Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials

Abstract During a study of the helminth parasites of carangid fish of the Gulf of Mexico, Protomicrocotyle mirabilis and a new member of that genus were found. The aim of the present study is to provide new morphological...

Materias / palabras clave: No

Abstract Friction Stir Welding (FSW) is the most promising solid-state metals joining method introduced in this era. Compared to the conventional fusion welding methods, this FSW can produce joints with higher mechanical...

Abstract A novel coronavirus (COVID-19) was firstly identified in Wuhan by the end of 2019. China has implemented a series of preventive measures to deter COVID-19 spread and its consequences since the beginning of the...

Abstract Purpose To determine cervical biometry in pregnant women between 18 and 24 weeks of gestation and the ideal mode of measurement of cervical length in cases of curved and straight cervical morphology. Methods ...

Abstract Leptospirosis is a worldwide zoonosis caused by pathogenic bacteria of the genus Leptospira. Lipopolysaccharide (LPS) is an immunodominant and protective antigen for Leptospira, but its biosynthesis remains poor...

Abstract Arc welding processes, especially gas metal arc welding, are a common technology for joining pieces in industrial production. Therefore, welding quality depends heavily on process settings, such as synergic para...

This paper examines the determinants of profitability for construction companies in Croatia. Sample includes more than 8678 construction companies covering the period from 2003 to 2014 what present 11 years of observat...

The CEE countries are celebrating the 15th anniversary of joining the European Union. The ‘feast’ is also of note because the EP elections are just in front of us. Instead of weighing up the expected results, we can ...