ABSTRACT
Results of long-term research of becoming circadian rhythm of temperature (CRT) of human skin of shoulder during puberty are presented. For this purpose, 48-hour monitoring T at children, teenagers and mature young men and female from 8 till 22-th years with application of a method "Thermochron iButton" has been led. Age dynamics of mesor, reflecting process of becoming thermoregulation of organism during puberty, has wave character. The first wave with maximum T was observed at children of 10-11 years, second maximum T--at teenagers of 14-15 years. And at persons man's and female dynamics of mesor is synchronous, however, at girls from 8 till 17 years mesor authentically above. At adult people mesoris above at young men. Dynamics of amplitude CRT does not vary till 12-13 years, in 14-15 years at boys the size of amplitude decreases, and at girls increases. In 16-17 years at children amplitude sharply increases with the subsequent significant decrease by the period of a maturity (20-22 years). At boys, amplitude of CRT it is authentic more, than at girls, at adult people this parameter does not differ. At research of a cycle a dream-wakefulness periods in which changes daily thermoregulation are revealed: at boys in the age of 10-11 years, and at girls at 10-11 and in 16-17 years. During these periods T at night is above, than in the afternoon.
Subject(s)
Circadian Rhythm/physiology , Puberty/physiology , Skin Temperature/physiology , Adolescent , Adult , Child , Female , Humans , MaleABSTRACT
The subject of this study was the investigation of the short-term memory (STM) of visual (SVM) and auditory (SAM) modality in boys and girls of the middle school age, as in the daytime, and during the course of the school week. The obtained data show that in pupils from the 5th to the 7th class SVM and SAM playback volume in children of both genders is significantly increased, while SVM productivity in boys from 6 - 7th classes is higher than in girls of the same age. The amplitude of day changes in SVM and SAM was found to decrease significantly with the age. In all age groups the range of daily fluctuations in short-term memory of both modalities in boys appears to be higher than in girls. In all age groups a significant part of schoolchildren was revealed to possess optimal forms of temporal organization of short-term memory: morning, day and morning-day types, in that while during the school week in pupils of 5th to 7th classes of both genders the number of optimal waveforms of curves of daily dynamics of short-term memory increases, which contributes to the optimization of their mental performance.
Subject(s)
Memory, Short-Term/physiology , Students/psychology , Age Factors , Female , Humans , Male , Schools , Sex Factors , Time FactorsABSTRACT
Doppler ultrasound study records decreased volume blood flow in patients with connective tissue dysplasia. Their hemodynamic features are more marked during food testing. Dysplasia-dependent structural changes in the vascular system, such as vascular hypoplasia, wall-occluding lesions, different types of deformities, are one of the causes of lower volumetric blood flow in the abdominal vessels. The found abdominal vascular structural and functional features in patients with connective tissue dysplasia can serve as the basis for blood flow disproportion in different stages of digestion.
Subject(s)
Angiography/methods , Connective Tissue Diseases/complications , Echocardiography, Doppler, Color/methods , Gastrointestinal Tract , Peripheral Vascular Diseases , Tomography, Spiral Computed/methods , Abdomen/blood supply , Adult , Blood Vessels/pathology , Blood Vessels/physiopathology , Blood Volume Determination/methods , Connective Tissue Diseases/congenital , Connective Tissue Diseases/physiopathology , Data Interpretation, Statistical , Female , Gastrointestinal Tract/blood supply , Gastrointestinal Tract/physiopathology , Humans , Male , Nutritional Physiological Phenomena , Peripheral Vascular Diseases/diagnosis , Peripheral Vascular Diseases/etiology , Peripheral Vascular Diseases/physiopathology , Splanchnic CirculationABSTRACT
Daily variations in short-term visual and hearing memory were found in 8-10-year-old children. It was ascertained that they were not optimized with the learning time in most children. In 70% of the children, individual daily variations in short-term memory of all modalities were asynchronous. In these children, the mean daily volume of short-term hearing memory was much more than that of short-term visual one. The girls could reproduce the greater volume of visual information than could be boys.
Subject(s)
Memory, Short-Term/physiology , Students/psychology , Auditory Perception , Child , Female , Humans , Male , Schools , Visual PerceptionABSTRACT
The protein content in the diet affects the amount of serum protein and fraction distribution in gnotobiots. Germ-free pigs and guinea-pigs which received the diet containing the least amount of protein showed an abrupt decrease in the total protein level in blood serum. As regards the content of alpha- and beta-globulins, no significant differences were found in blood serum of experimental animals. The amount of alpha-blobulin in germ-free animals which received the protein-deficient diet was 1 1/2-2 times higher than in those which received protein in an amount meeting the physiological requirements. It was established that 4-8% of protein in the diet of 2-month-old germ-free pigs and 14-18% in the diet of germ-free guinea-pigs favour the normal growth and development of experimental animals.
