The Effects of Indoor Air Speed on the Thermal Comfort of Human Body in Winter

2014 ◽  
Vol 522-524 ◽  
pp. 495-500
Author(s):  
Jiao Lin Wang ◽  
Lu Chen
Keyword(s):  
Body Temperature ◽  
Thermal Comfort ◽  
Indoor Air ◽  
Human Body ◽  
Sensory Nerve ◽  
Heat Losses ◽  
Physiological Parameters ◽  
The Body ◽  
Air Speed ◽  
Temperature Conduction

Air speed affects convective and evaporative heat losses from the human body. Some physiological parameters such as conduction speeds of nerves and body temperature are considered to can directly indicate the responses of human body to air speed. The aim of this paper is to seek the appropriate physiological parameters and acquire the primary affected trends. The research methods included questionnaire, physic test, and physiology test. Through changing the indoor air speed, tested the body temperature, conduction speeds of sensory nerve and motorial nerve of the subjects and recorded the subjects subjective thermal senses. With the increase of blowing time, the conduction speeds of sensory nerve and motorial nerve both tend to diminish. The thermal senses vote changes quickly from neutrality to light cool and cool. This experiment also shows thermal comfort senses can be expressed with the quantification form of the physiology indexes.

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.

scholarly journals Activity and health monitoring systems

2018 ◽  
Vol 11 (1) ◽  
pp. 11-14
Author(s):  
Béla-Csaba Simon ◽  
Stefan Oniga ◽  
Iuliu Alexandru Pap
Keyword(s):  
Human Body ◽  
Health Monitoring ◽  
Touch Screen ◽  
Physiological Parameters ◽  
The Body ◽  
Raspberry Pi ◽  
Monitoring Systems ◽  
Solid Base ◽  
Processing Unit ◽  
Health Monitoring Systems

Abstract This paper presents an Open Platform Activity and health monitoring systems which are also called e-Health systems. These systems measure and store parameters that reflect changes in the human body. Due to continuous monitoring (e.g. in rest state and in physical effort state), a specialist can learn about the individual's physiological parameters. Because the human body is a complex system, the examiner can notice some changes within the body by looking at the physiological parameters. Six different sensors ensure us that the patient's individual parameters are monitored. The main components of the device are: A Raspberry Pi 3 small single-board computer, an e-Health Sensor Platform by Cooking-Hacks, a Raspberry Pi to Arduino Shields Connection Bridge and a 7-inch Raspberry Pi 3 touch screen. The processing unit is the Raspberry Pi 3 board. The Raspbian operating system runs on the Raspberry Pi 3, which provides a solid base for the software. Every examination can be controlled by the touch screen. The measurements can be started with the graphical interface by pressing a button and every measured result can be represented on the GUI’s label or on the graph. The results of every examination can be stored in a database. From that database the specialist can retrieve every personalized data.

scholarly journals The Scheme of Stress Detecting Tools by Using HIR333, GSR and DS18B20 Censors Based On Microcontroller Atmega 8

2019 ◽  
Vol 1 (2) ◽  
pp. 74-80
Author(s):  
Takdir Tamba
Keyword(s):  
Heart Rate ◽  
Body Temperature ◽  
Young People ◽  
Physiological Parameters ◽  
The Body ◽  
Human Stress

A human stress detector has been designed with the physiological parameters of stress. Stress is a common respond to the demands of the body. There is a necessity for self adjustment, thus it causes disturbance in body’s equilibrium. Nowadays, stress is not only experienced by the elders, but also young people. Stress also affects the condition of the body. When someone is stressed, the body will hold integrated reactions against the stressors. These reactions include the increasing heart rate, fast breathing, and cold sweating. The detector works on the condition of the body by using a GSR sensor to determine the conductivity of the skin, HIR333 to detect changes in heart and body temperature DS18B20, which then compared with the specified parameters.

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 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 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

A Novel Modeling Approach to Estimate Segmental and Intersegmental Ventilation and Heat Transport From a Walking Clothed Human Using Electric Circuit Analogy

2017 ◽  
Author(s):  
Nagham Ismail ◽  
Nesreen Ghaddar ◽  
Kamel Ghali
Keyword(s):  
Heat Transport ◽  
Human Body ◽  
Electric Circuit ◽  
Heat Losses ◽  
The Body ◽  
Effective Model ◽  
Sensible Heat ◽  
Body Experiences ◽  
Circuit Analogy ◽  
Relative Wind

When the clothed human body experiences relative wind due to walking and external wind, heat and vapor transfers from the body to the environment are enhanced by ventilation through clothing. The clothing ventilation is related to the clothing permeability, open and close apertures, relative wind, clothed limbs swinging motion as well as the inter-segmental ventilation that occurs at the interconnection between the clothed human trunk and arms. In this study, a computationally effective model is developed to estimate clothing ventilation based on the analogy between the air flow in the microclimate air layer and an electric circuit composed of resistance and inductance elements. The model takes into account the inter-connection between the segments for the clothed human upper part driven by difference of pressure in the microclimate air of the trunk and the upper arms. The estimation of the segmental ventilation, taking into account the inter-connection, allows the correction of the clothing dry resistances in a bio-heat model that will be used to predict the sensible heat losses of the clothed human.

scholarly journals Melting n-eicosane in scaled-up model of capsule for use in hot climate thermal-comfort garments

2019 ◽  
Vol 213 ◽  
pp. 02086
Author(s):  
Václav Tesař ◽  
Jozef Kordík
Keyword(s):  
Body Temperature ◽  
Thermal Comfort ◽  
Human Body ◽  
Large Scale ◽  
Initial Temperature ◽  
Melting Process ◽  
Cold Desert ◽  
Hot Climate ◽  
Human Body Temperature ◽  
Spherical Capsule

Recent ideas in development of garments for thermal comfort in desert climates concentrate on textile containing small capsules filled with material melting to store latent heat at roughly human body temperature. This cools the garment wearer during the hot day and later keeps him warm in the cold desert night. This article investigates the melting process in a single scaled up model of spherical capsule filled with n-eicosane – a material melting at Tm = 35.7 ˚C. In the experiment, the capsule model was heated starting from the initial temperature 30˚C by warm water at 50.4 ˚C. The large scale of the model made possible study of details of the melting process.

scholarly journals Improvement of Human Thermal Comfort by Optimizing the Airflow Induced by a Ceiling Fan

2019 ◽  
Vol 11 (12) ◽  
pp. 3370 ◽  
Author(s):  
Hsin-Hung Lin
Keyword(s):  
Body Temperature ◽  
Thermal Comfort ◽  
Simulation Model ◽  
Human Body ◽  
Comfort Level ◽  
Whole Body ◽  
Thermal Plume ◽  
Human Thermal Comfort ◽  
Sustainable Environment ◽  
Human Body Temperature

The purpose of this study is to investigate the relationship between the greenhouse effect and the overuse of electricity and energy under a sustainable environment. The goal is to investigate the airflow that is induced by ceiling fans, by measuring human body temperature. In the simulation model, the thermal plume phenomenon is observed in the indoor environment. By changing the ceiling fan parameters, the influence of the airflow is investigated by practical measurement of human body temperature. The indoor convective heat transfer is enhanced by installing a ceiling fan, which affects the whole body thermal sensation (WBTS). Different scenarios are reviewed by adjusting the fan speed in the simulation model, so that the distribution of human body temperature can be determined. By modeling the blade plane of the ceiling fan, the airflow characteristics can be determined by making the simulation model rotate in order to assess the thermal comfort characteristics. As the ceiling fan generates circulation within the domain, the thermal comfort is significantly enhanced. By keeping a reasonable thermal comfort level, a higher room temperature or a higher heat load is allowed so that a sustainable environment can be maintained without affecting the indoor thermal comfort or the efficiency of energy usage.

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