scholarly journals Physiological mechanisms of thermoregulation, their disorders in cerebral autonomic dysregulation

1999 ◽  
Vol XXXI (1-4) ◽  
pp. 63-76
Author(s):  
R. T. Gaifutdinov ◽  
М. F. Ismagilov ◽  
D. R. Khasanova
Keyword(s):  
Body Temperature ◽  
Chemical Reactions ◽  
Thermal Energy ◽  
Human Body ◽  
Thermal State ◽  
The Body ◽  
Biological Functions ◽  
Autonomic Dysregulation ◽  
Physiological Mechanisms ◽  
Physical Sense

Body temperature reflects the state of homeostasis, the intensity of bioenergetic processes and the thermal state of the human body as a whole. In the physical sense, body temperature is a measure of the amount of thermal energy in the body, determines the rate of chemical reactions, affecting all biological functions of the body.

The mechanisms which affect the periodic cycle of Pacific Wuchereria bancrofti microfilariae

1981 ◽  
Vol 55 (2) ◽  
pp. 95-100 ◽  
Author(s):  
F. Hawking ◽  
Tinousi Jennings ◽  
F. J. Louis ◽  
E. Tuira
Keyword(s):  
Carbon Dioxide ◽  
Circadian Rhythm ◽  
Body Temperature ◽  
Sodium Bicarbonate ◽  
Human Body ◽  
Venous Blood ◽  
Wuchereria Bancrofti ◽  
Early Morning ◽  
The Body ◽  
Small Rise

ABSTRACT1. Investigations were made of the effect of various procedures in raising or lowering the microfilaria count of Pacific type Wuchereria bancrofti in the peripheral blood.2. Raising the body temperature in the early morning was followed by a moderate fall in the counts. Breathing increased oxygen, or reduced oxygen (hypoxia) or increased carbon dioxide, or the ingestion of sodium bicarbonate produced no consistent and significant changes in the count. Ingestion of glucose (in one volunteer) was followed by a small rise in the count. Muscular exercise was followed by a fall in the count, which is interpreted as probably being a response to a lower concentration of oxygen in the venous blood returning to the lung.3. It has not been possible to identify the physiological components of the circadian rhythm of the human body which entrain the cycle of these microfilariae. Attempts to obtain evidence incriminating the stimuli described above have been unsuccessful.

THE JUSTIFICATION OF THE SCHEME AND INDICATORS POWER HEAT FLOW IN THE HEAT REGULATION DEVICE OF MOBILE MACHINES

2015 ◽  
Vol 2 (2) ◽  
pp. 576-582
Author(s):  
Глемба ◽  
K. Glemba ◽  
Гриценко ◽  
A. Gritsenko ◽  
Аверьянов ◽  
...  
Keyword(s):  
Heat Flow ◽  
Power Density ◽  
Human Body ◽  
Thermal State ◽  
Structural Parameters ◽  
Average Power ◽  
Heat Removal ◽  
The Body ◽  
Human Operator ◽  
Weight Changes

Identifies the main factors influencing the process of formation of the thermal state of the human body. Calculated structural parameters of thermally regulating the local device. Experimental relationships between indicators of the thermal state of the human operator and the device settings. A method of calculating the power, the dependence of the heat flux conductive panels and deficit (excess) heat in the human body. Justified and selected method of controlling the heat removal from the surface of the body of the human operator using a local thermally regulating device. We present graphical dependence of changes in the average power density of the heat flow for a given rate of decline of temperature and of total body weight; changes in power density of the heat flow and human growth. To obtain comfortable temperatures the body requires an average power density of the heat flow from the surface of the human body 268 W/m2, full capacity of the heat flow will amount to 486 watts.

scholarly journals A human body as an energy source

2021 ◽  
pp. 60-65
Author(s):  
Yevgen Honcharov ◽  
Nataliya Kriukova ◽  
Vladislav Markov ◽  
Igor Polyakov
Keyword(s):  
Thermal Energy ◽  
Human Body ◽  
Power Plants ◽  
Experimental Testing ◽  
Mechanical Energy ◽  
Living Organism ◽  
Electrical Energy ◽  
The Body ◽  
Charge Carriers ◽  
The Brain

The article deals with the actual problems of using the energy released by the human body. The question arises how much energy can the human body generate? Is it possible to use this energy for domestic and industrial needs? In the 18th and 19th centuries, the first scientific works on this topic appeared. It turned out that the charge carriers in the proteins of a living organism are protons and electrons, which, together with the electron-hole conduction system, create a single conductivity inherent only in a living organism. The electrical activity of the brain is assessed by voltage pulses with an amplitude of 500 μV of various frequencies from 0.5 to 55 Hz. It is impossible to receive pulses with such a frequency and such an amplitude from only ionic-type charge carriers. Electrochemical current sources are inertial; therefore, this fact can be direct evidence of the presence of electronic movement of charge carriers in the brain and the nervous system as a whole. It is quite realistic to use the thermal energy of the human body. Currently, the central building of the Stockholm railway station has been turned into a kind of experimental testing ground. Every day about 250 thousand people pass through the station building, who emit up to 25 MW of thermal energy. Most of it in the form of heated air is collected in ventilation and through heat exchangers energy is transferred to heat water in the heating system of another building. According to rough estimates, the efficiency of such a system can save up to 25% of the energy spent on heating the building. Inside a person, electric currents of various frequencies are generated in 7 biological power plants: in the heart, in the brain and in the five sense organs. All the electricity that is generated inside the human body is absorbed by its own tissues. Not a single electron produced inside a living organism leaves the human body, and does not pass into the environment, but is absorbed by the skin. This is the reason for the closure of the human electrical system. The body itself absorbs all the electricity that it previously produced. The energy generated by the human body is divided into mechanical, thermal, and electrical. The thermal energy of the human body can be used most effectively. Mechanical energy can also be used, but with much less efficiency. The electrical energy of the human body at this stage in the development of science and technology is practically impossible to use. Its use is likely to become real in the very distant future

scholarly journals Thermal biology of Amphisbaena munoai (Squamata: Amphisbaenidae)

2018 ◽  
Vol 35 ◽  
pp. 1-9 ◽  
Author(s):  
Nathalia Rocha Matias ◽  
Laura Verrastro
Keyword(s):  
Body Temperature ◽  
Ambient Temperature ◽  
Thermal Environment ◽  
Rio Grande ◽  
The Body ◽  
Rio Grande Do Sul ◽  
Body Temperatures ◽  
Physiological Mechanisms ◽  
Thermal Biology ◽  
The Relationship

Studies on the thermal biology of fossorial reptiles that examine the relationship between the body temperature and thermal environment are needed to determine the extent of their thermoregulation abilities. This study assessed the thermal biology of Amphisbaena munoai Klappenbach, 1969 in the rocky fields of the Rio Grande do Sul and in the laboratory. The body temperature of most individuals was between 24 and 30 °C, both in the field (n = 81) and laboratory (n = 19). More individuals were caught in winter (n = 55) and spring (n = 60) than in summer (n = 25) and fall (n = 45), and in spring, individuals showed similar nocturnal and diurnal activities. In the laboratory, we found individuals with body temperatures up to 5 °C higher than the ambient temperature (n = 4), suggesting that some physiological mechanisms participate in the thermoregulation of these animals. Amphisbaena munoai is a thigmothermic species that is capable of actively regulating its temperature by selecting microhabitats such that its various activities occur within an ideal temperature range. This study is the first to evaluate the effect of seasonality and diurnal and nocturnal variations on the thermoregulation of an amphisbaenid.

scholarly journals ANDROID APPLICATION FOR MEASURING HUMAN BODY TEMPERATURE AND FORCASTING FUTURE ILLNESS

2014 ◽  
pp. 161-164
Author(s):  
S PRABHAKARAN ◽  
DHANESHWARI KUMARI ◽  
RIA AHUJA
Keyword(s):  
Operating System ◽  
Body Temperature ◽  
Mobile Device ◽  
Human Body ◽  
The Body ◽  
The Other ◽  
Android Application ◽  
Human Body Temperature ◽  
Normal Human ◽  
Android Operating System

Android Application for measuring human body temperature is a new age mobile thermometer. This kind of application already exists but requires manual feeding temperature. In our project, we propose an application which will measure the body temperature automatically while the user is operating the mobile device. It has an in-built function which can trigger alert messages whenever the temperature becomes critical more than normal human body temperature. The display segment of the device is made up of capacitive touch screen, which can act upon the bioelectricity produced by human body with each and every touch. This application requires Android Operating System Version 2.2. It will also diagnose the other diseases the user might have depending upon the symptoms entered.

scholarly journals Printable, Highly Sensitive Flexible Temperature Sensors for Human Body Temperature Monitoring: A Review

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Yi Su ◽  
Chunsheng Ma ◽  
Jing Chen ◽  
Huiping Wu ◽  
Weixiang Luo ◽  
...  
Keyword(s):  
Body Temperature ◽  
Human Body ◽  
High Sensitivity ◽  
Measurement Range ◽  
Temperature Sensors ◽  
Temperature Monitoring ◽  
The Body ◽  
Temperature Changes ◽  
Practical Applications ◽  
Highly Sensitive

Abstract In recent years, the development and research of flexible sensors have gradually deepened, and the performance of wearable, flexible devices for monitoring body temperature has also improved. For the human body, body temperature changes reflect much information about human health, and abnormal body temperature changes usually indicate poor health. Although body temperature is independent of the environment, the body surface temperature is easily affected by the surrounding environment, bringing challenges to body temperature monitoring equipment. To achieve real-time and sensitive detection of various parts temperature of the human body, researchers have developed many different types of high-sensitivity flexible temperature sensors, perfecting the function of electronic skin, and also proposed many practical applications. This article reviews the current research status of highly sensitive patterned flexible temperature sensors used to monitor body temperature changes. First, commonly used substrates and active materials for flexible temperature sensors have been summarized. Second, patterned fabricating methods and processes of flexible temperature sensors are introduced. Then, flexible temperature sensing performance are comprehensively discussed, including temperature measurement range, sensitivity, response time, temperature resolution. Finally, the application of flexible temperature sensors based on highly delicate patterning are demonstrated, and the future challenges of flexible temperature sensors have prospected.

scholarly journals PEMANTAUAN KONDISI TUBUH BERBASIS ARDUINO DAN RASPBERRY PI UNTUK PENGENDALIAN KONDISI RUANGAN

2019 ◽  
Vol 6 (1) ◽  
pp. 14-18
Author(s):  
Ahmad Sabiq ◽  
Nova Eka Diana ◽  
Debita Febriana
Keyword(s):  
Heart Rate ◽  
Body Temperature ◽  
Body Condition ◽  
Human Body ◽  
Electronic Device ◽  
Threshold Value ◽  
The Body ◽  
Raspberry Pi ◽  
Turn On

A cozy room should adjust its environment based on the condition of its occupants since it will indirectly affect the moods and body conditions of people inside. This study aims to develop a system for monitoring the human body condition using paired sensors on the Arduino Lilypad. The system will send the sensors data to the Raspberry Pi3 via Bluetooth to automatically control the electronic device inside the room based on the occupant body condition. The developed system will automatically turn on or turn off the electronic device when the body temperature or the heart rate is higher than the specified threshold value. Keywords: Lilypad, Raspberry, body sensor

scholarly journals Hypothetical model of COVID-19: origin,spread,binding,infection,treatment and prevention(Version10）

2020 ◽  
Author(s):  
Alex Lee
Keyword(s):  
High Temperature ◽  
Body Temperature ◽  
Human Body ◽  
Human Infection ◽  
The Body ◽  
Human Immune System ◽  
Treatment And Prevention ◽  
Hypothesis Model ◽  
The World ◽  
Prevention Method

2019 Coronavirus Hypothesis Model, preliminary hypothesis model, no experiments have been conducted yet. For laboratory reference only, please do not apply this theory before experimental verification. This article discusses the origin of the 2019 Coronavirus, the principles of human infection, the principles of transmission, high binding, changes in human temperature, prevention and treatmen.2019 Coronavirus originates from bats or other animals. In bats, this virus is a cooling factor. Due to the high temperature of bats, this cooling factor lowers the temperature of bats and belongs to normal life activity, it will not produce immune activation, and thus will not produce infections and diseases in the bat body. When this cooling factor enters the human body, especially when the temperature is low, the virus starts the function of the cooling factor in the human body, that is, to lower the human body temperature, the chill happens. The human immune system starts the immune function and gives a fever to fight the cooling. The replication and binding of the 2019 Coronavirus depends on the temperature of the surrounding cells. The higher the temperature, the more replicated and the stronger the binding. Therefore, the fever of the human body promotes the aggravation of the disease. addition to those suspected of having a fever, people whose body temperature is lower than normal may also be infected with 2019 Coronavirus. The way for bats to inhibit the replication of 2019 Coronavirus is high temperature, to avoid body temperature too low. It can be experimented to put the human body in a higher temperature environment, the heat is transmitted to the body, and the low temperature factor of the 2019 Coronavirus can be overcome. The hypothetical prevention method is: everyone in the world isolates for a certain period of time, and raises the temperature around the human body, so that everyone in the world has no 2019 Coronavirus.

scholarly journals БЕЗКОНТАКТНЕ ЕЛЕКТРОЖИВЛЕННЯ ІМПЛАНТАТІВ

2019 ◽  
pp. 30-39
Author(s):  
Володимир Петрович Олійник ◽  
Дар’я Вікторівна Теличко
Keyword(s):  
Magnetic Field ◽  
Human Body ◽  
Power Supply ◽  
Energy Supply ◽  
Thermal State ◽  
The Body ◽  
Alternating Magnetic Field ◽  
Artificial Organs ◽  
Depth Of Penetration ◽  
The Impact

The issues of long-term implants using in the human body are considered. Particular attention is paid to the problem of contactless supply of power to artificial organs with significant energy consumption. Using non-contact energy supply to a fully implanted technical device reduces the risk of infections getting into the patient's body as compared to the use of a power line that is output through internal tissues to the skin surface. The well-known developments of artificial heart apparatus were used as the object of analysis. Their main technical characteristics are considered. The maximum power consumption of these devices is about 20 watts, including models AbioCor. The design of the AbioCor was produced as a fully implanted contactless power unit, but the project was not completed. Although the principle of contactless power supply is undoubtedly an innovative step in the development of implant designs. As a result of the technical implementation of this principle, the following was obtained: it is advisable to use an alternating magnetic field with an inductive coupling between an external and an internal inductor for non-contact energy supply of implants; the use of frequencies of an alternating magnetic field of ~ 100 kHz makes it possible to obtain a compromise solution between the required depth of penetration into biotissues, insignificant heat formation in them and the size and mass of inductors. Under such conditions, the location in the body of the receiving inductor can be determined by medical recommendations. Evaluation experiments were carried out to determine the effective scheme of inclusion of the transmitting and receiving circuits, and the effect on the transmission coefficient of the electrophysical properties of the environment between them. It is shown that for working out of technical solutions of hardware realization of contactless power supply, implantation elements can be placed in saline solution as a model of bioenvironment. It is recommended to use serial element base and circuit solutions used for contactless power supply of radio electronic devices. Also, a quantitative assessment of the additional heat load of the implant on the human body was carried out, since part of the energy of the apparatus and its work, in accordance with the efficiency, inevitably goes into the heat eventually. A simplified calculation of the impact of implant energy losses on the thermal state of the body showed that overheating by 1 °C would be achieved provided the complete insulation of the area, on average, 8.6 hours. This proves the non-critical overheating of the body with implants, and allows the maintenance of a stable body temperature by physiological mechanisms.

scholarly journals Comparative physiological and hygienic assessment of the personal protective equipment EP-4(0) in the various assembly according to human thermal state indices

2021 ◽  
Vol 100 (3) ◽  
pp. 229-233
Author(s):  
Olga V. Burmistrova ◽  
Sergey Yu. Perov ◽  
Tatyana A. Konshina
Keyword(s):  
Heart Rate ◽  
Body Temperature ◽  
Air Temperature ◽  
Personal Protective Equipment ◽  
Thermal State ◽  
Heat Content ◽  
Operating Conditions ◽  
The Body ◽  
Protective Equipment ◽  
The Impact

Introduction. The article presents results of the study of the impact of the personal protective equipment EP-4 (0) in various assembly (overalls, jacket and trousers, jacket and semi-overall) from power frequency electric field and electrical shock on the thermal state of workers in a heating environment at air temperature 34.8 ○C and relative humidity 48%. Materials and methods. The study involved three men aged 35.3±4.6 years. They did the physical exercise for 40 minutes, had comfortable relaxation for 30 minutes after work. Recorded indices included skin temperature and moisture sensation score on 11 parts of the body, body temperature in the ear canal, heart rate, clothes temperature, heat sensation score, moisture loss, moisture evaporation efficiency. Results. Overalls using had the highest values of heat content, moisture score, heart rate changes, and body temperature increment. Heat content index in the body reached maximum permissible value using overalls earlier than other configurations. Conclusion. The research data showed overalls have the most significant impact on the human thermal state, jacket and trousers have the least impact, jacket and semi-overall take an intermediate place. The configuration including jacket and trousers, jacket and semi-overall under specific operating conditions is the most optimal. Such PPE assembly can be recommended for use in the open area in the summer season at an air temperature of 35 ○C and above, subject to protective requirements.

Sign in / Sign up

Export Citation Format

Share Document