Birds exhibit a specialized tail that serves as an integral part of the flight apparatus, supplementing the role of the wings in facilitating high performance aerial locomotion.The evolution of this function for the tail contributed to the diversification of birds by allowing them to utilize a wider range of flight behaviors and thus exploit a grea
Variation in the condition of marine sediments provides selective preservation milieus, which act as a key determinant for the abundance and distribution of dinoflagellate resting cysts in natural sediments.Microbial degradation is an understudied biological factor of potential importance in the processes.However, gaps remain in Western belts our k
The article presents alternative scenarios of the state regulation of the markets for addictive goods and services which include alcohol and alcohol-containing products, tobacco products, energy drinks, drugs, gambling games.The author reveals the content of inertial, modernizational, monopolistic and prohibitionist scenarios, and systematizes the
In this work, we study a Markov model of cyber threats that act on a computer system.Within the framework of the model the computer system is considered as a system with failures and recoveries by analogy with models of reliability theory.To estimate functionally-temporal properties of the system we introduce a parameter called the lifetime of the
ABSTRACT: Electrospinning is a simple and versatile technique that uses electrostatic forces to create fibers in the nano to micro range from a variety of materials, both synthetic and natural.Due to the high surface area to volume ratio, high porosity, and desirable mechanic characteristics of electrospun fibers, they are of current interest for a