The document outlines topics related to medical electronics including sources of biomedical signals, bio-potentials, electrocardiograms, electroencephalograms, and electromyograms. It discusses the resting potential and action potential of cells, the propagation of action potentials, and key concepts like the all-or-none law, absolute and relative refractory periods, and the Goldman-Hodgkin-Katz equation for calculating membrane potentials. Simulation examples and discussion topics are provided to reinforce these concepts.
The human body and Cell structure, Electrical Activity of Excitable Cells, The action, and Resting potentials. Introduction of Bio-potentials related to the human body.
ECG, EMG, EEG, ERG etc.
The human body and Cell structure, Electrical Activity of Excitable Cells, The action, and Resting potentials. Introduction of Bio-potentials related to the human body.
ECG, EMG, EEG, ERG etc.
The Action and resting potential of the body are discussed. The working of body cell, tissue and how the electrical activity of body cell done? are discussed.
How does the body make electricity and hoe does it use it?Mahmood Dalhat
The body makes electricity through our body electrolytes and our nervous system. The slides walk you through basic information on the how our body makes electricity and how it uses it.
Sustainable electric energy micro generation system based on electricSuyog Nawalkar
This presentation will provide you the information about behavior of electric eels and how they generate electricity. It will also provide you the harvesting structure of electric power from electric eels.
Electroencephalograms (EEGs) are recordings of the minute (generally less that 300
μ
V) electrical
potentials produced by the brain. Since 1924, when Hans Berger reported the recording of rhythmic
electrical activity from the human scalp, analysis of EEG activity has been conducted primarily in clinical
settings to detect gross pathologies and epilepsies and in research facilities to quantify the central effects
of new pharmacologic agents.In 1875, Richard Caton published the first account documenting the recording of spontaneous brain
electrical activity from the cerebral cortex of an experimental animal. The amplitude of these electrical
oscillations was so low (i.e., in the microvolt range) that Caton’s discovery is all the more amazing because
it was made 50 years before suitable electronic amplifiers became available. In 1924, Hans Berger, of the
University of Jena in Austria, carried out the first human EEG recordings using metal strips pasted to
the scalps of his subjects as electrodes and a sensitive galvanometer as the recording instrument. Berger
was able to measure the irregular, relatively small electrical potentials (i.e., 50 to 100
μ
V) coming from
the brain.
Recent rending-Advanced Energy: An International Journal (AEIJ)AEIJjournal2
Advanced Energy: An International Journal (AEIJ) is a quarterly open access peer-reviewed journal that publishes articles which contribute new results in all areas of the Energy Engineering and allied fields. This multi disciplinary journal is devoted to the publication of high quality papers on theoretical and practical aspects of Energy Engineering.
The Action and resting potential of the body are discussed. The working of body cell, tissue and how the electrical activity of body cell done? are discussed.
How does the body make electricity and hoe does it use it?Mahmood Dalhat
The body makes electricity through our body electrolytes and our nervous system. The slides walk you through basic information on the how our body makes electricity and how it uses it.
Sustainable electric energy micro generation system based on electricSuyog Nawalkar
This presentation will provide you the information about behavior of electric eels and how they generate electricity. It will also provide you the harvesting structure of electric power from electric eels.
Electroencephalograms (EEGs) are recordings of the minute (generally less that 300
μ
V) electrical
potentials produced by the brain. Since 1924, when Hans Berger reported the recording of rhythmic
electrical activity from the human scalp, analysis of EEG activity has been conducted primarily in clinical
settings to detect gross pathologies and epilepsies and in research facilities to quantify the central effects
of new pharmacologic agents.In 1875, Richard Caton published the first account documenting the recording of spontaneous brain
electrical activity from the cerebral cortex of an experimental animal. The amplitude of these electrical
oscillations was so low (i.e., in the microvolt range) that Caton’s discovery is all the more amazing because
it was made 50 years before suitable electronic amplifiers became available. In 1924, Hans Berger, of the
University of Jena in Austria, carried out the first human EEG recordings using metal strips pasted to
the scalps of his subjects as electrodes and a sensitive galvanometer as the recording instrument. Berger
was able to measure the irregular, relatively small electrical potentials (i.e., 50 to 100
μ
V) coming from
the brain.
Recent rending-Advanced Energy: An International Journal (AEIJ)AEIJjournal2
Advanced Energy: An International Journal (AEIJ) is a quarterly open access peer-reviewed journal that publishes articles which contribute new results in all areas of the Energy Engineering and allied fields. This multi disciplinary journal is devoted to the publication of high quality papers on theoretical and practical aspects of Energy Engineering.
this presentation on cellular electrophysiology carry the information of electrical properties of biophysiology in cellular level. i hope it help you all.
Action potential By Dr. Mrs. Padmaja R Desai Physiology Dept
To study the Concept of Action Potential and describe the stages of action potential.
Ionic basis of Action Potential & its Propogation.
Properties of Action Potential.
Types action Potential
Objectives of the study:- Background of Action and Resting Potential, Procedure of the Experiment, Benefits and Findings of the Voltage Clamp Experiment, Variation of the Voltage Clamp Experiment.
Electrocardiographic manifestation of "supernormal" conduction is defined as conduction that is more rapid than expected or presence of conduction when block is anticipated. It is not supernormal in the sense or being more rapid than normal. Therefore, the term relative supernormality or "supernormality" is more appropriate. The mechanism of "supernormal" conduction is conduction during a period of supernormal excitability and conduction associated with altered membrane potential. Some of the more common phenomena that are not dependent on conduction during the supernormal period but manifest better than expected conduction, thus simulating "supernormal" conduction, include dual AV nodal conduction, the "gap" phenomenon, "peeling back" of the refractory period, summation of subthreshold responses, diastolic phase 4 depolarization, and phasic autonomic influences.
Event Management System Vb Net Project Report.pdfKamal Acharya
In present era, the scopes of information technology growing with a very fast .We do not see any are untouched from this industry. The scope of information technology has become wider includes: Business and industry. Household Business, Communication, Education, Entertainment, Science, Medicine, Engineering, Distance Learning, Weather Forecasting. Carrier Searching and so on.
My project named “Event Management System” is software that store and maintained all events coordinated in college. It also helpful to print related reports. My project will help to record the events coordinated by faculties with their Name, Event subject, date & details in an efficient & effective ways.
In my system we have to make a system by which a user can record all events coordinated by a particular faculty. In our proposed system some more featured are added which differs it from the existing system such as security.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Vaccine management system project report documentation..pdfKamal Acharya
The Division of Vaccine and Immunization is facing increasing difficulty monitoring vaccines and other commodities distribution once they have been distributed from the national stores. With the introduction of new vaccines, more challenges have been anticipated with this additions posing serious threat to the already over strained vaccine supply chain system in Kenya.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
2. UNIT I- ELECTRO-PHYSIOLOGY AND BIO-POTENTIAL RECORDING
• Sources of bio medical signals
• Bio-potentials
• Bio potential electrodes
• Biological amplifiers
• ECG-Electrocardiogram (ECG or EKG)
• EEG- Electroencephalogram (EEG)
• EMG-Electromyography
• PCG-Phonocardiogram
• Typical waveforms and signal characteristics
3. DiscussionTopics
RECAP:
• Electro Physiology
• Bio-Potentials
Resting Potential
Action Potential
• Propagation of Action potential
• Propagation rate Or Conduction Velocity
• All or None law
• Absolute refractory period
• Relative refractory period
• Goldman–Hodgkin–Katz (GHK) Equation
15. • When a cell is excited and generates an action potential ionic
currents begin to flow.
• The rate at which an action potential moves down a fiber or is
propagated from cell to cell is called the propagation rate.
• In nerve fibers the propagation rate is also called the nerve
conduction rate, or conduction velocity.
• This velocity varies widely, depending on the type and diameter of the nerve fiber. The usual velocity range in
nerves is from 20 to 140 meters per second (m/sec).
• Propagation through heart muscle is slower, with an average rate from 0.2 to 0.4 m/sec. Special time-delay
fibers between the atria and ventricles of the heart cause action potentials to propagate at an even slower rate,
0.03 to 0.05 m/sec.
Conduction Velocity
16. H. P. Bowditch
In 1905 the Cambridge
physiologist Keith Lucas
extended the "all-or-
none" principle
(introduced by H. P.
Bowditch for the cardiac
tissue) to skeletal muscle
and nerve fibres.
https://www.youtube.com/watch?v=4M1zzT9J_y4
17. Regardless of the method by which a cell is excited
or the intensity of the stimulus (provided it is
sufficient to activate the cell), the action potential
is always the same for any given cell. This is known
as the all-or-nothing law.
18.
19. The net height of the action
potential is defined as the
difference between the potential
of the depolarized membrane at
the peak of the action potential
and the resting potential.
Following the generation of an
action potential, there is a brief
period of time during which the
cell cannot respond to any new
stimulus. This period, called
the absolute refractory period,
lasts about 1 m sec in nerve cells.
Following the absolute
refractory period, there occurs a
relative refractory period, during
which another action potential
can be triggered, but a much
stronger stimulation is required.
In nerve cells, the relative
refractory period lasts several
milliseconds. These refractory
periods are believed to be the
result of after-potentials that
follow an action potential.
20.
21. GOLDMAN–HODGKIN–KATZ (GHK) EQUATION:
The Goldman–Hodgkin–Katz (GHK) voltage equation, more commonly
known as the Goldman equation, is an equation used to calculate the
electrical equilibrium potential across the cell's membrane in the presence
of more than one ions taking into account the selectivity of membrane's
permeability. The magnitude of membrane potential is determined by
22. GOLDMAN–HODGKIN–KATZ (GHK) EQUATION:
where
E is the potential difference of an ion between membranes
R is the universal gas constant; R = 8.314471 J mol-1
T is the thermodynamics temperature, in Kelvin; 0 K = -273.15oC
z is the number of moles of electrons transferred between membranes (defined by the Valency of ion)
F is the Faraday's constant; F = 96,485.3415 C mol-1
PX is the permeability of the membrane to a particular ion (X)
[X]o is the concentration of ion outside the membrane
[X]i is the concentration of ion inside the membrane
According to Goldman’s equation Resting Potential is -86.8 mV
23.
24. SIMULATION OF ACTION POTENTIAL
https://phet.colorado.edu/sims/html/neuron/latest/neu
ron_en.html