Functional Reaction of the Cardiovascular System to Irritation of Vestibular Receptors in Students Engaged in Different Types of Martial Arts

Regular dosed physical activity in all cases has a tonic and healing effect on a person. Feasible muscle activity helps to improve the function of the heart, lungs, blood vessels and the nervous system. In martial arts, the reactivity of the vestibular apparatus is of great importance, providing the flow of information about the current position of the body in space, the success of movement in it and maintaining the stability of the posture due to the effective redistribution of muscle tone. Purpose of the work: to find out the dependence of the reaction of the cardiovascular system to the arising vestibular irritation in different types of martial arts. Martial arts classes help to increase the degree of vestibular stability. The statokinetic stability is very pronounced and increases in the course of hand-to-hand combat, which has a lot of moments with different severity of angular accelerations. The peculiarities of motor activity in any kind of martial arts inevitably affect the peculiarities of the reaction to the test with a change in the position of the head.

FUNCTIONAL REACTION OF PARASITOIDS IN LOCAL SETTLEMENTS OF THE SOCIAL WASP POLISTES NIMPHA (CHRIST, 1791) IN THE TERRITORY OF THE MESHCHERSKY NATIONAL PARK

Ectoparasitoids Latibulus argiolus and Elasmus schmitti were found in 62 nests of Polistes nimpha. P. nimpha colonies nested in the attics of buildings (Meshchersky National Park, Ryazan region). Parasitoids had shown the functional reaction, choosing larger nests, and parasitized there a large number of host larvae.

Historical Persecution Reaction Complex

This original study examines the reluctance of oppressed populations to publicly criticize the recognized performance shortcomings of leaders who are members of their identity group. Using critical race theory (CRT), this article utilizes three case examples of Black American leadership that present evidence of what the authors identify as Historical Persecution Reaction Complex (HPRC). HPRC describes four elemental arguments reflecting an oppressed identity group’s attempt to protect itself from perceived further social marginalization, limit the exacerbation of oppression, and to preserve the identity group’s leadership gains in the larger society by supporting leadership despite recognized shortcomings in the leadership. Although asserting HPRC operates as a functional reaction to oppression by serving both as an act of cohesion and resistance to oppressive structures, the authors suggest that HPRC is paradoxically detrimental to oppressed identity groups due to maintaining substandard leadership.

Synthesis of RAFT Molecularly Imprinting Polymer Based on Ionic Liquid

A kind of sulfanilic acid molecularly imprinted polymer (MIP) was synthesized by reverisible addition fragmentation chain transfer (RAFT) process using (4-cyanopentanoic acid)-4-dithiobenzoate (CTA-2) as chain transfer reagent, methacrylic acid (MAA) as functional monomer and hydrophobic ionic liquids, 1-butyl-3-methylimidazolium hexfluorophosphate ([bmim]PF6), as functional reaction medium. The results showed that the obtained MIPs had regular shape with high affinity to sulfonamides, and when it was empolyed as the adsorbtion sorbent of solid phase extraction for selectively extracted the three kinds of sulfonamides (sulfamerazine, sulfadiazine and sulfamethoxazole) from chicken samples, the interferences of chicken matrix could be eliminated efficiently and the recoveries at three spiked leves were satisfied.