A simulation model of extracellular glucose distribution in the human body

1975 ◽  
Vol 3 (1) ◽  
pp. 34-46 ◽  
Author(s):  
Joseph Tiran ◽  
Kurt R. Galle ◽  
Daniel Porte
Keyword(s):  
Simulation Model ◽  
Human Body ◽  
Extracellular Glucose

scholarly journals Vibration transmission simulation model of a seated vehicle passenger

2021 ◽  
Vol 2120 (1) ◽  
pp. 012009
Author(s):  
I Ho ◽  
N Z Abu Bakar
Keyword(s):  
Simulation Model ◽  
Human Body ◽  
Ride Comfort ◽  
Real Life ◽  
Vertical Vibration ◽  
Suspension System ◽  
Human Body Model ◽  
Peak Displacement ◽  
Moving Vehicle ◽  
Vibration Simulation

Abstract The paper presents development of vertical vibration simulation for a seated passenger in a moving vehicle is resulting from the bounce effect of the vehicle under various conditions. Although extensive research has been conducted in this field of study, the existing analysis were conducted on either the suspension of vehicle or the human body and not both. In this paper, the simulation model consists of three sub-systems, namely, vehicle suspension, seat suspension and human body model in which the vertical vibration is transmitted. By incorporating these sub-systems into the simulation, a correlation between mechanical and biological aspects can be formed between the three sub-systems. The transmission of vertical vibration in the validated simulation model provides a more realistic approach which can result to a better comparison to the real-life scenario. Parametric analysis of passive suspension system shows that lower mass ratio, higher stiffness ratio and lower damping coefficient results in better ride comfort. The incorporation of variable damper into the suspension system shows significant improvement in settling time, peak displacement and velocity, lesser discomfort rating and higher safety in passenger body.

scholarly journals Towards the Concurrent Optimization of the Server: A Case Study on Sport Health Simulation

Complexity ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Nan Jia ◽  
Ruomei Wang ◽  
Mingliang Li ◽  
Yuhan Guan ◽  
Fan Zhou
Keyword(s):  
Simulation Model ◽  
Human Body ◽  
Optimization Scheme ◽  
Simulation Experiments ◽  
Server Cluster ◽  
Simulation Efficiency ◽  
Concurrent Optimization ◽  
Complex Simulation ◽  
Computational Resources ◽  
Health Simulation

Using computers to conduct human body simulation experiments (e.g., human sport simulation, human physiology simulation, and human clothing simulation) can benefit from both economic and security. However, the human simulation experiment usually requires vast computational resources due to the complex simulation model which combines complicated mathematical and physical principles. As a result, the simulation process is usually time-consuming and simulation efficiency is low. One solution to address the issue of simulation efficiency is to improve the computing performance of the server when the complexity of the simulation model is determined. In this paper, we proposed a concurrent optimization scheme for the server that runs simulation experiments. Specifically, we firstly propose the architecture of the server cluster for the human body simulation, and then we design the concurrent optimization scheme for the server cluster by using Nginx. The experiment results show that the proposed concurrent optimization scheme can make better use of server resources and improve the simulation efficiency in the case of human sport simulation.

Parallel simulation model for heat and moisture transfer of clothed human body

2019 ◽  
Vol 75 (8) ◽  
pp. 4731-4749
Author(s):  
Nan Jia ◽  
Yuan Huang ◽  
Jiapei Li ◽  
Haigang An ◽  
Xiaomin Jia ◽  
...  
Keyword(s):  
Simulation Model ◽  
Human Body ◽  
Moisture Transfer ◽  
Parallel Simulation ◽  
Heat And Moisture Transfer ◽  
Heat And Moisture

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.

Modelling and simulation of a system for verticalization and aiding the motion of individuals suffering from paresis of the lower limbs

2013 ◽  
Vol 61 (4) ◽  
pp. 919-928 ◽  
Author(s):  
K. Bagiński ◽  
D. Jasińska-Choromańska ◽  
J. Wierciak
Keyword(s):  
Simulation Model ◽  
Human Body ◽  
Modelling And Simulation ◽  
Lower Limbs ◽  
Significant Feature ◽  
Simulation Studies ◽  
Power Demand ◽  
Wearable Robots ◽  
Human Muscles

Abstract There has been designed a device for verticalization and aiding the gait of individuals suffering from paresis of the lower limbs. It can be counted in the category of so-called “wearable robots”, whose task is to replace or aid human limbs. Dependently on the function realized, these robots are classified into one of the following three groups: a) exoskeletons - strengthening the force of human muscles beyond their natural abilities, b) orthotic robots - restoring lost or weakened functions of human limbs, c) prosthetic robots - replacing an amputated limb. A significant feature of the device that has been designed is the fact that it has not to replace human limbs, but only restore them to their lost motor capabilities. Thus, according to the presented classification, it is an orthotic robot. Unlike in the case of the existing systems for verticalization, the gait is to be realized in a way that is automatic to the highest possible extent, keeping the user involved as little as possible, and the device is to imitate the natural movements of man with the highest fidelity. Within the works on the system for verticalization and aiding the motion, a simulation model of the device was created. It includes a structure of the robot, a model of the actuators and a model of the human body that constitutes the load for the driving units. Then, simulation studies were carried out, including evaluation of the power demand of the device as well as the influence of the gait rate and of the length of the steps on the operation of the system.

Simulation Model of the Human Body Thermoregulation System and Its Applications for Design of Air/Space Autonomous Life Support Systems

2001 ◽  
Author(s):  
Timofey V. Matjushev ◽  
Nikolay N. Khabarovsky ◽  
Edward A. Kurmazenko ◽  
Ivan V. Dokunin
Keyword(s):  
Simulation Model ◽  
Human Body ◽  
Life Support ◽  
Support Systems ◽  
Life Support Systems ◽  
Air Space

scholarly journals The Human Body Simulation Model at the Time of Using a Wheelchair

BIOPHILIA ◽  
2015 ◽  
Vol 2015 (2) ◽  
pp. 207-215
Author(s):  
Hajime Takada ◽  
Koichiro Yokoyama ◽  
Masanori Shintani ◽  
Yoshifusa Matsuura
Keyword(s):  
Simulation Model ◽  
Human Body

Microstructural comparison of synthetic bioceramics with natural bioceramics

1991 ◽  
Vol 49 ◽  
pp. 38-39
Author(s):  
Shulin Wen ◽  
Jingwei Feng ◽  
A. Krajewski ◽  
A. Ravaglioli
Keyword(s):  
Recent Work ◽  
Human Body ◽  
Human Tissues ◽  
Main Constituent ◽  
Laboratory Furnace ◽  
Chinese Adult ◽  
Human Enamel ◽  
Biological Compatibility ◽  
Synthetic Hydroxyapatite ◽  
Synthetic Work

Hydroxyapatite bioceramics has attracted many material scientists as it is the main constituent of the bone and the teeth in human body. The synthesis of the bioceramics has been performed for years. Nowadays, the synthetic work is not only focused on the hydroapatite but also on the fluorapatite and chlorapatite bioceramics since later materials have also biological compatibility with human tissues; and they may also be very promising for clinic purpose. However, in comparison of the synthetic bioceramics with natural one on microstructure, a great differences were observed according to our previous results. We have investigated these differences further in this work since they are very important to appraise the synthetic bioceramics for their clinic application.The synthetic hydroxyapatite and chlorapatite were prepared according to A. Krajewski and A. Ravaglioli and their recent work. The briquettes from different hydroxyapatite or chlorapatite powders were fired in a laboratory furnace at the temperature of 900-1300°C. The samples of human enamel selected for the comparison with synthetic bioceramics were from Chinese adult teeth.

Study on erythrocytes by SEM photogrammetry (SEMP) technique

1990 ◽  
Vol 48 (3) ◽  
pp. 724-725
Author(s):  
Tong Wensheng ◽  
Lu Lianhuang ◽  
Zhang Zhijun
Keyword(s):  
Quantitative Analysis ◽  
Cell Membrane ◽  
Clinical Diagnosis ◽  
Human Body ◽  
Blood Cells ◽  
Three Dimensional ◽  
Normal Person ◽  
Blood Disease ◽  
Computation Technique ◽  
Important Basis

This is a combined study of two diffirent branches, photogrammetry and morphology of blood cells. The three dimensional quantitative analysis of erythrocytes using SEMP technique, electron computation technique and photogrammetry theory has made it possible to push the study of mophology of blood cells from LM, TEM, SEM to a higher stage, that of SEM P. A new path has been broken for deeply study of morphology of blood cells.In medical view, the abnormality of the quality and quantity of erythrocytes is one of the important changes of blood disease. It shows the abnormal blood—making function of the human body. Therefore, the study of the change of shape on erythrocytes is the indispensable and important basis of reference in the clinical diagnosis and research of blood disease.The erythrocytes of one normal person, three PNH Patients and one AA patient were used in this experiment. This research determines the following items: Height;Length of two axes (long and short), ratio; Crevice in depth and width of cell membrane; Circumference of erythrocytes; Isoline map of erythrocytes; Section map of erythrocytes.

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