scholarly journals A Multiphase Flow in the Antroduodenal Portion of the Gastrointestinal Tract: A Mathematical Model

2016 ◽  
Vol 2016 ◽  
pp. 1-18 ◽  
Author(s):  
P. V. Trusov ◽  
N. V. Zaitseva ◽  
M. R. Kamaltdinov
Keyword(s):  
Mathematical Model ◽  
Gastrointestinal Tract ◽  
Multiphase Flow ◽  
Human Body ◽  
Digestive System ◽  
System Model ◽  
Food Density ◽  
Secretory Function ◽  
Functional Disorders ◽  
Food Particles

A group of authors has developed a multilevel mathematical model that focuses on functional disorders in a human body associated with various chemical, physical, social, and other factors. At this point, the researchers have come up with structure, basic definitions and concepts of a mathematical model at the “macrolevel” that allow describing processes in a human body as a whole. Currently we are working at the “mesolevel” of organs and systems. Due to complexity of the tasks, this paper deals with only one meso-fragment of a digestive system model. It describes some aspects related to modeling multiphase flow in the antroduodenal portion of the gastrointestinal tract. Biochemical reactions, dissolution of food particles, and motor, secretory, and absorbing functions of the tract are taken into consideration. The paper outlines some results concerning influence of secretory function disorders on food dissolution rate and tract contents acidity. The effect which food density has on inflow of food masses from a stomach to a bowel is analyzed. We assume that the future development of the model will include digestive enzymes and related reactions of lipolysis, proteolysis, and carbohydrates breakdown.

scholarly journals THE FUNCTIONAL STATUS OF GASTROINTESTINAL TRACT AND FEATURES OF OUTCOMES IN ACUTE INTESTINAL INFECTIONS

2012 ◽  
Vol 17 (3) ◽  
pp. 56-59
Author(s):  
M. S. Grigorovich
Keyword(s):  
Irritable Bowel Syndrome ◽  
Gastrointestinal Tract ◽  
Digestive System ◽  
High Rate ◽  
Lactase Deficiency ◽  
Functional Disorders ◽  
Intestinal Infections ◽  
Reactive Changes ◽  
Irritable Bowel

The significance of the problem of acute intestinal infections (AII) to date is associated with both their prevalence and high rate of adverse effects in the outcome of the disease. In modern literature there is enough information about the frequent occurrence in AII patients microbiota disorders, immune system imbalances, identifying signs of reactive changes ofpancreatic tissue and functional disorders of biliary tract, lactase deficiency, long-term disorders of functional activity of the digestive system. The data about AII as one of the factors of forming the gastrointestinal tract pathology, including irritable bowel syndrome have been accumulated.

scholarly journals Inter-relationship between Annavaha Srotas and Agni W.S.R. Shodhana Therapy

2020 ◽  
Vol 1 (1) ◽  
pp. 54-60
Author(s):  
Mahesh Prasad Sah ◽  
Bijendra Shah ◽  
Gouri Chauhan ◽  
OP Singh
Keyword(s):  
Gastrointestinal Tract ◽  
Significant Role ◽  
Human Body ◽  
Digestive System ◽  
The Body ◽  
Disease Elimination

Ayurveda defines human body is made of different gross and subtle channels called srotas. Srotas are the channels through which different elements undergo transformation, transmutation, circulation and transportation. The srotas is an integral part of the body, serving as a route to conduct or convey a substance from one place to other. There are 13 major srotas mentioned. The Srotas or channels which carry Anna or Food is called Annavaha Srotas. Some authorities equate the Annavaha Srotas with the some parts of digestive system or the gastrointestinal tract. Agni, the transformative energy, in the Annavaha srotas digest and transforms the food into components suitable for the body. Impairment of function of agni is root the cause of the disease, which manifest either in Annavaha srotas or other srotas in the body. Thus, correction of agni is the prime in treatment of any disease. Elimination of vitiated doshas by Pancakarma procedure viz Vaman and Virechana has shown to have impact on agni through various guna in the drugs used in these therapy. Sodhana procedures has a significant role in improving the function of agni and restoring the health.

Possibilities of osteopathic methods of diagnosis and correction in gallbladder dyskinesia

2021 ◽  
pp. 93-104
Author(s):  
Yu. N. Panaseiko
Keyword(s):  
Gastrointestinal Tract ◽  
Russian Federation ◽  
Digestive System ◽  
Clinical Case ◽  
Adult Population ◽  
Functional Disorders ◽  
New Approaches ◽  
Pathological Conditions ◽  
Gallbladder Dyskinesia ◽  
The Russian Federation

Functional disorders of the digestive system (including gallbladder dyskinesia) are widespread among the adult population of the Russian Federation. Their combination in a fairly large percentage of cases with degenerative-dystrophic diseases of the spine, and the probable vertebrogenic causality of a number of the gastrointestinal tract pathological conditions lead to the need using new approaches in diagnosis and treatment, including non-drug methods. This clinical case shows the possibility of osteopathic diagnostics and correction in gallbladder dyskinesia.

scholarly journals Viruses in Cancers of the Digestive System: Active Contributors or Idle Bystanders?

2020 ◽  
Vol 21 (21) ◽  
pp. 8133
Author(s):  
Martin Marônek ◽  
René Link ◽  
Giovanni Monteleone ◽  
Roman Gardlík ◽  
Carmine Stolfi
Keyword(s):  
Steady State ◽  
Gastrointestinal Tract ◽  
Cancer Progression ◽  
Human Body ◽  
Digestive System ◽  
Tissue Homeostasis ◽  
Human Gastrointestinal Tract ◽  
Huge Number ◽  
Viral Particles

The human virome, which is a collection of all the viruses that are present in the human body, is increasingly being recognized as an essential part of the human microbiota. The human gastrointestinal tract and related organs (e.g., liver, pancreas, and gallbladder)—composing the gastrointestinal (or digestive) system—contain a huge number of viral particles which contribute to maintaining tissue homeostasis and keeping our body healthy. However, perturbations of the virome steady-state may, both directly and indirectly, ignite/sustain oncogenic mechanisms contributing to the initiation of a dysplastic process and/or cancer progression. In this review, we summarize and discuss the available evidence on the association and role of viruses in the development of cancers of the digestive system.

Tissue necrosis and passage of fluid due to cold stress from the thermally damaged human body peripherals: A mathematical model

2015 ◽  
Vol 04 (02) ◽  
pp. 1550012
Author(s):  
M. A. Khanday ◽  
Fida Hussain ◽  
Khalid Nazir
Keyword(s):  
Mathematical Model ◽  
Finite Element ◽  
Heat Equation ◽  
Cold Stress ◽  
Human Body ◽  
Human Subjects ◽  
Diffusion Equations ◽  
Tissue Necrosis ◽  
Cold Temperatures ◽  
Element Technique

The development of cold injury takes place in the human subjects by means of crystallization of tissues in the exposed regions at severe cold temperatures. The process together with the evaluation of the passage of fluid discharge from the necrotic regions with respect to various degrees of frostbites has been carried out by using variational finite element technique. The model is based on the Pennes' bio-heat equation and mass diffusion equations together with suitable initial and boundary conditions. The results are analyzed in relation with atmospheric temperatures and other parameters of the tissue medium.

THE PHYSILOGICAL CONCEPT OF AGNI AND TRIDOSH WITH REFERENCE TO GRAHANI, A LITERARY REVIEW

2020 ◽  
Vol 8 (02) ◽  
Author(s):  
Vrushali P. Kale Vrushali Purushottam Kale
Keyword(s):  
Gastrointestinal Tract ◽  
Life Style ◽  
Food Habits ◽  
Digestive System ◽  
The Body ◽  
Main Role ◽  
Classical Literature ◽  
Root Cause ◽  
Digestion Process ◽  
Physiological Analysis

According to Ayurveda, Jatharagni plays main role in the digestion process. Jatharagni carries its functions through Pachaka pitta. Grahani is an organ of gastrointestinal tract located between Amashaya and Pakwashaya, where digestion takes place. According to classical literature Pitta is same as Agni. Tridosha also plays very important role in the digestion process. In the recent days, irregular life style affects the digestive system and Jatharagni very badly. Whenever Agni gets (Vikrut) unbalanced due to wrong food habits and lifestyle, it should be understood that along with Agni, Pachaka Pitta will also get disturbed. Agnimandya is the root cause of most of the disorders like Grahani. Grahani organ is the main location of Jatharagni. Grahani is the organ where Pachak Pitta and Samanvayu carry out digestion. The most important function of Grahani is digestion of food with the help of Jatharagni, Pachakpitta, Pittadhara Kala and Samnvayu. Agni inside the body, digest the food give strength and maintain health. Samanvayu regulates the movements of the Grahani and helps in digestion. Hence, in this article we attempt to analyze and correlate patho-physiology of Grahani with respect to Physiological analysis of Agni and disturbed doshas. Etiological factors induces imbalance in Jatharagni, Pachak Pitta and Samanvayu and prolonged imbalance state weakens the Pittadhara Kala, which results in disease Grahani. Health of Grahani entirely depends on balanced state of Jatharagni, Pachaka Pitta, Pittadhara Kala and Samanvayu. The irregular life style, incompatible food habits creates Ama causes Grahani, affecting the digestive system and Jatharagni very badly.

Classification of diseases of the gastrointestinal tract in the practice of a family doctor

2021 ◽  
pp. 8-13
Author(s):  
Aleksey Borisovich Petrukhin
Keyword(s):  
Gastrointestinal Tract ◽  
Digestive System ◽  
Family Doctor ◽  
The Body ◽  
Internal Organs ◽  
Important Place ◽  
High Prevalence ◽  
Classification Of Diseases ◽  
Diagnosis Of Diseases

Gastroenterology belongs to one of the leading branches of therapy. In the structure of diseases of the internal organs, diseases of the digestive system occupy a particularly important place due to their high prevalence, which increases with age. As a rule, these diseases have a chronic, progressive, recurrent course, which ultimately leads to severe disorders of the activity of many organs and systems of the body. The article presents the basic requirements for the formation of a clinical diagnosis of diseases of the gastrointestinal tract, which are most common in the practice of a family doctor.

Does Your Gut Taste? Sensory Transduction in the Gastrointestinal Tract

Physiology ◽  
1998 ◽  
Vol 13 (6) ◽  
pp. 275-280 ◽  
Author(s):  
Helen E. Raybould
Keyword(s):  
Gastrointestinal Tract ◽  
Absorptive Capacity ◽  
Endocrine Cells ◽  
Sensory Transduction ◽  
Regulatory Mechanisms ◽  
Neural Pathways ◽  
Secretory Function ◽  
Gastrointestinal Motor

The primary sensors in the gut are endocrine cells. They release peptides and amines that stimulate intrinsic and extrinsic neural pathways affecting gastrointestinal motor and secretory function. These regulatory mechanisms alter the digestive and absorptive capacity of the intestine to match the entry of a meal from the stomach.

scholarly journals Starting generator driving torque modeling in the studies of synchronous starting of synchronous machines

2002 ◽  
Vol 15 (3) ◽  
pp. 399-408
Author(s):  
Zoran Stajic ◽  
Dragan Petrovic ◽  
Dusan Arnautovic
Keyword(s):  
Mathematical Model ◽  
Linear Function ◽  
Polynomial Approximation ◽  
System Model ◽  
Synchronous Machines ◽  
Model Function ◽  
Detailed Model ◽  
Pumped Storage ◽  
Driving Torque ◽  
Time Linear

The paper deals with significance of the starting generator (SG) driving torque modeling in the studies of synchronous starting of synchronous machines (SSSM). The detailed mathematical model of SSSM in reversible pumped storage plant (RPSP) "Bajina Basta" is derived. Because it is very difficult to include the detailed model of the SG turbine in the system model, function of SG driving torque is modeled approximately. The most frequent case in SSSM studies is its approximation with a time linear function, until it reaches the value that should provide rotating of both machine rotors with synchronous velocities, which is also used in the paper Afterwards, three different cases are considered: constant, linear and polynomial approximation in terms of SG rotor velocity. Numerical results obtained by applying developed models to a particular case of synchronous starting are compared with the corresponding experimental results. In this way, it is shown that the application of the most frequently used SG driving torque modeling leads to the erroneous results. The advantages of the polynomial approximation suggested in the paper and its validity is demonstrated.

scholarly journals ОКРЕМІ СКЛАДОВІ ХІМУСУ ТА ЇХ ОБМІН В ОРГАНІЗМІ ПОРОСЯТ

2014 ◽  
pp. 71-76
Author(s):  
О. І. Мироненко
Keyword(s):  
Gastrointestinal Tract ◽  
Digestive System ◽  
Echinacea Purpurea ◽  
Mineral Elements ◽  
Feed Additives ◽  
Potassium Sodium

Вивчені особливості травлення у поросят післявідлучення, обґрунтовано використання окремих не-традиційних кормових добавок у раціонах поросят.Досліджено динаміку вмісту мінеральних елементів(кальцію, фосфору, калію, натрію, заліза) та їх обміну шлунково-кишковому тракті поросят під дієюокремих кормових добавок. Представлені результатидосліджень кормових добавок із сухого мінеральногоконцентрату, ліпроту та ехінацеї пурпурової з точкизору їх впливу на вміст у шлунку, порожній і клубовійкишках. The peculiarities of the digestive system in piglets after weaning, justified the use of certain non-conventional feed additives in the diets of pigs. The dynamics of the mineral elements (calcium, phosphorous, potassium, sodium, iron) and their metabolism in the gastrointestinal tract of pigs by the action of certain feed additives. The results of studies of dry feed additives mineral concentrate, Liprot and Echinacea purpurea in terms of their influence on the contents of the stomach empty and ileum.

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