Have you faced problems of incorrect readings in displays, flickering of tubelights etc. Do you know, electrical pollution can be harmful for our lives also?
So, here’s the Process Sheet electrical programs inspection checklists where we want to make sure the inspectors using their platform can make most of the software to speed up their processes, record, and compile information simpler, easier automatically generate reports and ultimately keep making the world a safer space.
The document discusses eco responsibility at SUN and focuses on e-waste and power consumption issues related to computing. It notes that by 2004, 300 million computers were already obsolete, creating a growing e-waste problem. Each personal computer contains over 700 esoteric compounds and 1 million obsolete computers amounts to over 25,000 tons of electronic junk. It also highlights power loss issues in data centers, transfers, and conversions that question the sustainability of computing due to its environmental impact.
Sleek Electrical Socket
Worn-out or faulty outlets are one of the most common causes of electrical fires and electrocutions at home. Inspecting all the electrical outlets regularly for damage or deterioration, updating them, and using them safely will all minimize your risks of a house fire or other accidents. At Socket Solutions LLC, we are committed to providing a child-safe electrical socket for the safety of your whole family.
At Socket Solutions LLC, we offer child safe electrical socket that can also make your home look more organized. Visit our website for more details.
https://sleeksocket.com/picture-gallery/
Child Safe Electrical Outlet
Best Electrical Socket
Power electronics controls electrical energy using electronic circuits and switches semiconductor devices between cutoff, saturation, and active regions. It differs from linear electronics which uses semiconductor devices as amplifiers in the active region. Power electronics has lower switching losses, operates switches rather than amplifiers, and is used in applications that require control of high power levels like motor drives, power supplies, and renewable energy systems. Common examples of power electronics applications include light dimmers, air conditioners, vacuum cleaners, induction cooking, UPS systems, escalators, blowers, elevators, pumps, compressors, and cranes.
The Green Energy Box (GEB)also known as the GEB is designed to provide significant savings on electric bills, increase the life of electrical motors through heat reduction and provide surge protection for the entire home or facility. Using methods employed at large industrial complexes, now reduced to a compact unit, to reclaim and recycle electrical energy. The application has benefits to both the user and the supplier of electrical power.
Customers using the Green Energy Box have realized savings of up to 25% on their home or small business monthly power bills. 25 year warranty on the hardware.
A CONTEMPORARY SURVEY ON ENERGY HARVESTING TECHNIQUES FOR NEXT GENERATION IMP...VLSICS Design
This document summarizes recent research on energy harvesting techniques for implantable biomedical devices. It discusses harvesting energy from inside the human body through kinetic, thermal, biochemical, and electrical sources. Kinetic energy can be harvested from body/organ movements using electromagnetic, piezoelectric, or electrostatic transducers. Thermal gradients can be used via thermoelectric generators. Glucose is a source for biochemical fuel cells. Some body parts also generate small electrical potentials. Wireless power delivery from outside the body is also discussed. The energy harvesters convert energy to electricity and conditioning circuits manage the output. Research continues to improve harvested power levels and address biocompatibility for powering advanced implantable devices.
Solar electricity handbook boxwell, michaelHany Ziad
This document is a handbook that provides a comprehensive guide to designing and installing solar electric power systems. It covers topics such as the principles of solar electricity, the components of solar electric systems, how to design a system, installation, and more. The handbook is intended to educate people on solar power and guide them in setting up their own off-grid or grid-tied solar systems. It also discusses trends in the rapidly changing solar industry and the technology's potential to transform global energy access.
At Caddell Electric, we truly care about your needs. We specialize in electrical panels, meter bases, and code compliance issues. If you feel that your electrical system needs to be inspected by one of our licensed electricians, visit http://www.dallaselectricrepair.com/
So, here’s the Process Sheet electrical programs inspection checklists where we want to make sure the inspectors using their platform can make most of the software to speed up their processes, record, and compile information simpler, easier automatically generate reports and ultimately keep making the world a safer space.
The document discusses eco responsibility at SUN and focuses on e-waste and power consumption issues related to computing. It notes that by 2004, 300 million computers were already obsolete, creating a growing e-waste problem. Each personal computer contains over 700 esoteric compounds and 1 million obsolete computers amounts to over 25,000 tons of electronic junk. It also highlights power loss issues in data centers, transfers, and conversions that question the sustainability of computing due to its environmental impact.
Sleek Electrical Socket
Worn-out or faulty outlets are one of the most common causes of electrical fires and electrocutions at home. Inspecting all the electrical outlets regularly for damage or deterioration, updating them, and using them safely will all minimize your risks of a house fire or other accidents. At Socket Solutions LLC, we are committed to providing a child-safe electrical socket for the safety of your whole family.
At Socket Solutions LLC, we offer child safe electrical socket that can also make your home look more organized. Visit our website for more details.
https://sleeksocket.com/picture-gallery/
Child Safe Electrical Outlet
Best Electrical Socket
Power electronics controls electrical energy using electronic circuits and switches semiconductor devices between cutoff, saturation, and active regions. It differs from linear electronics which uses semiconductor devices as amplifiers in the active region. Power electronics has lower switching losses, operates switches rather than amplifiers, and is used in applications that require control of high power levels like motor drives, power supplies, and renewable energy systems. Common examples of power electronics applications include light dimmers, air conditioners, vacuum cleaners, induction cooking, UPS systems, escalators, blowers, elevators, pumps, compressors, and cranes.
The Green Energy Box (GEB)also known as the GEB is designed to provide significant savings on electric bills, increase the life of electrical motors through heat reduction and provide surge protection for the entire home or facility. Using methods employed at large industrial complexes, now reduced to a compact unit, to reclaim and recycle electrical energy. The application has benefits to both the user and the supplier of electrical power.
Customers using the Green Energy Box have realized savings of up to 25% on their home or small business monthly power bills. 25 year warranty on the hardware.
A CONTEMPORARY SURVEY ON ENERGY HARVESTING TECHNIQUES FOR NEXT GENERATION IMP...VLSICS Design
This document summarizes recent research on energy harvesting techniques for implantable biomedical devices. It discusses harvesting energy from inside the human body through kinetic, thermal, biochemical, and electrical sources. Kinetic energy can be harvested from body/organ movements using electromagnetic, piezoelectric, or electrostatic transducers. Thermal gradients can be used via thermoelectric generators. Glucose is a source for biochemical fuel cells. Some body parts also generate small electrical potentials. Wireless power delivery from outside the body is also discussed. The energy harvesters convert energy to electricity and conditioning circuits manage the output. Research continues to improve harvested power levels and address biocompatibility for powering advanced implantable devices.
Solar electricity handbook boxwell, michaelHany Ziad
This document is a handbook that provides a comprehensive guide to designing and installing solar electric power systems. It covers topics such as the principles of solar electricity, the components of solar electric systems, how to design a system, installation, and more. The handbook is intended to educate people on solar power and guide them in setting up their own off-grid or grid-tied solar systems. It also discusses trends in the rapidly changing solar industry and the technology's potential to transform global energy access.
At Caddell Electric, we truly care about your needs. We specialize in electrical panels, meter bases, and code compliance issues. If you feel that your electrical system needs to be inspected by one of our licensed electricians, visit http://www.dallaselectricrepair.com/
Dirty Electricity or electromagnetic PollutionArnulfo Laniba
Only now is it clear that there is a kind of electricity or energy that is dirty, and it is called dirty because it makes you sick. That's it. And to my knowledge there are at least 3 examples or kinds of energy, to wit: High voltage, extremely low frequency and the HAARP. This presentation will give you a tour to get to know each of these three dirty energy.
This was a slideshow for a class we did at the Pasadena Public Library for children ages 8-12 to teach them about electricity and help them to construct paper circuits. You can view photos and videos from this class in our google drive folder: https://drive.google.com/open?id=0B2kplpFq1AeucGZWbHZqRWlCNTQ
Sensing for Sustainability: Disaggregated Sensing of Electricity, Gas, and WaterEric Larson
This document summarizes research on disaggregated sensing of water, electricity, and natural gas usage presented by Eric Larson, a PhD candidate at the University of Washington. It describes work on developing low-cost sensing systems called ElectriSense, GasSense and HydroSense to monitor appliance-level usage. Evaluation of ElectriSense in homes showed it could identify electrical events like lamps and laptops turning on with 95% accuracy. GasSense used microphones to detect natural gas events like regulators hissing with similar accuracy. HydroSense monitored home water pressure and usage.
This document discusses electrical safety and terms. It defines key concepts like conductors, insulators, electrical charge, current and static electricity. It lists common electrical terms like ampere, ohm, volt, resistance, generator and switch. Static electricity is highlighted as a hazard in operating rooms that can cause sparks and ignite fires, though it does not directly endanger patients. Proper grounding is important to dissipate static accumulation and reduce risks.
Electrostatic discharge (ESD) occurs when a charged object discharges to another object. As little as a few thousand volts of static electricity can damage electronic components. ESD events are caused by the rapid movement of electric charges, such as from walking on carpet and then touching a metal doorknob. While an ESD event may not immediately damage a component, effects may show up over time. ESD costs the electronics industry millions annually in damaged parts. Proper ESD control programs focus on reducing static charge generation and accumulation, as well as safely dissipating any charges that do occur through grounding of people and conductive materials.
The document discusses electrostatic discharge (ESD) and provides information on controlling ESD in electronics manufacturing environments. Some key points:
- ESD occurs when a charged object discharges to another object, which can damage electronic components. Static electricity builds up from friction and movement.
- ESD costs the electronics industry millions annually in damaged parts. Despite efforts, ESD still affects production yields and costs.
- Controlling ESD involves designing products to withstand ESD, reducing charge generation, grounding conductive materials to dissipate charges, and neutralizing charges that do occur.
This document provides an overview of converting sound energy to electricity. It discusses piezoelectric crystals and Sonea devices that can directly convert sound into electricity. Acoustic sound harvesting is described as the process of capturing sound energy, storing it, and controlling it for small devices. An experiment conducted in London successfully harvested the power of footfall and generated electricity. Potential applications of this conversion technique include powering small devices and sensors. While it can utilize wasted sound energy, limitations include low power densities of sound waves.
1) This document discusses a technology that can convert sound energy into electrical energy using a piezoelectric effect. Researchers from Texas and the University of Houston developed this concept using piezoelectric materials around 21 nanometers thick.
2) The technology works by using piezoelectric nanogenerators that convert mechanical energy from vibrating sound absorbing pads and zinc electrodes into electrical energy to charge batteries.
3) This sound-powered technology could allow devices to be charged using ambient sounds and has applications to capture wasted noise energy from traffic or other sources for power generation.
This document provides parts lists and instructions for a basic electricity/electronics workshop. It lists required parts like a power supply, multimeter, breadboard, wires, LED, resistors, capacitor, and transistor. It then provides explanations of key electrical concepts like current, voltage, resistance, and Ohm's law. It also explains how to identify the positive and negative terminals of a power supply using a multimeter and how breadboards work for building circuits.
The document provides an introduction to electricity including its definition, uses, generation, transmission, and distribution. It discusses the various dangers of electricity including electric shock, burns, neurological damage, ventricular fibrillation, arc flash, and statistics on electrical accidents. The dangers are higher from electrical installations in public places where safety precautions are not taken. Indian Electricity Rules 36 and 40 mandate safety requirements for handling electrical supply lines and apparatus as well as street boxes, but as images later show, these rules are often not followed. Ensuring electrical safety, especially in public areas, is important to minimize accidents.
The document discusses resistors and their use in electric circuits. A resistor resists the flow of electric current and is made of materials like carbon or metal wires. The document then describes an experiment using a 2B pencil to act as a resistor by drawing a dark shape on paper and connecting it to a battery and LED. It finds that darker pencil marks provide more resistance and better allow the LED to light up compared to lighter marks. In conclusion, while objects like pencils can act as resistors, real resistors are still necessary for electric circuits due to providing more precise and reliable resistance.
various type of artifacts in ECG signal & how it's removeManish Kumar
The document is a term paper on biomedical instrumentation and processing that discusses sources of artifacts in electrocardiogram (ECG) signals. It outlines various internal and external sources of artifacts like muscle activity, skin stretching, 60 Hz interference from AC power, and issues with electrodes. It then describes methods to remove artifacts like good skin preparation, checking for interference and electrode issues, using appropriate filters, and ensuring the patient is relaxed and motionless. The conclusion reiterates that understanding artifact sources and electrode application can significantly reduce issues.
Induction cooktops use electromagnetic fields to heat pans quickly and efficiently. While induction produces low-frequency radiation, studies show daily use poses little risk to health. Controversy over other electromagnetic field (EMF) sources is due to early studies linking power lines to cancer, but subsequent research found no clear evidence of health effects from levels produced by appliances. While induction cooktops emit EMFs like other electric devices, the levels during normal use are considered safe.
This document is a seminar report on wireless electricity submitted by Ram Krishna Pandey to partial fulfillment of a B.Tech degree in electrical and electronics engineering. The report discusses the history of wireless power transmission including Nikola Tesla's experiments in the late 1800s. It describes modern wireless power techniques including inductive coupling, resonant inductive coupling, and microwave power transmission. Applications discussed include powering devices in the home, mobile phones, notebooks, and other electronics without the need for wires or plugs.
These slides include a presentation about the connections between math and electricity (Ohm's law, calculating voltage and resistance) as well as how-to slides so that you can make your own math quiz that lights a bulb to confirm when you have the correct answer. Note, the animations won't come through in this upload but for several slides I had the kids try to calculate the answers to my questions before I showed the answers.
This document provides descriptions of several exhibits designed and built by Richard Gagnon for museums. It summarizes several electrical circuit exhibits that allow exploration of concepts like AC vs DC electricity without wires. It also describes electronics exhibits using blocks to explore concepts like amplification and radio transmission. Additional exhibits explore optics, magnetism, heat, sound, and light.
This document discusses piezoelectricity and its use in energy harvesting. It begins with a brief history of piezoelectricity's discovery. It then explains the basic components and working principle of a piezoelectric energy harvesting circuit using diodes, a capacitor, switch, and LED. Applications discussed include using piezoelectric sensors in floors, gym equipment, vehicles, keyboards to harvest vibration energy. Both advantages like being pollution-free and disadvantages like low output are summarized. The document concludes that piezoelectric energy harvesting is a promising green energy source.
A development of a coin slot prepayment system for household electricityHarhar Caparida
This document presents a technical research on the development of a coin slot prepayment system for household electricity. It was conducted by three students from the University of Mindanao in partial fulfillment of the requirements for a Bachelor of Science degree in Computer Engineering. The study aimed to design and develop a coin slot prepayment system using a peripheral interface controller, wattmeter, and circuit breaker. It provides a convenient method for tenants in a boarding house to pay for electricity through coin slots and monitors their daily usage. The findings of the study include a bill of materials and costs for developing the system.
This document summarizes a paper about different types of power problems. It begins by introducing the topic and defining key power quality issues like transients, interruptions, sag/swell, and waveform distortion. It then describes the causes and effects of different types of transients, including impulsive transients from lightning and oscillatory transients from switching operations. Standards for defining and measuring power problems are also discussed. The document provides examples and diagrams to illustrate power quality events. In summary, it provides an overview of common power problems, their characteristics, causes, and potential impacts.
This document compares the mean square error of using feed forward back propagation (FFBP) and radial basis function (RBF) neural network algorithms to calculate the cut-off frequency of a band pass finite impulse response (FIR) digital filter with a Hanning window. A table shows the actual cut-off frequencies, the cut-off frequencies calculated by each algorithm, and the mean square errors for each algorithm. The FFBP and RBF neural networks are tested on filter coefficient data with an actual Hanning window cut-off frequency to calculate the cut-off frequency and determine which algorithm has lower error.
Aiming better gsm controls a possible approachDevesh Singhal
The document discusses improving control of grammage (GSM) in paper machines by modifying the approach flow system. Currently, variations in GSM occur when the secondary screen reject valve opens only briefly. The document proposes removing the secondary screen and installing a screw pump with a variable frequency drive-controlled motor after the main screen to continuously throttle the reject flow at a low level. This proposed system could eliminate GSM variations and fluctuations in the cross-machine profile while also providing energy savings by removing the secondary screen and reducing throughput needs.
Stack height often surprises me. Can we consider cutting short stacks of factories to reduce pollution, as the polluter would be faced to get into self compliance, willingly or unwillingly. Think.
Dirty Electricity or electromagnetic PollutionArnulfo Laniba
Only now is it clear that there is a kind of electricity or energy that is dirty, and it is called dirty because it makes you sick. That's it. And to my knowledge there are at least 3 examples or kinds of energy, to wit: High voltage, extremely low frequency and the HAARP. This presentation will give you a tour to get to know each of these three dirty energy.
This was a slideshow for a class we did at the Pasadena Public Library for children ages 8-12 to teach them about electricity and help them to construct paper circuits. You can view photos and videos from this class in our google drive folder: https://drive.google.com/open?id=0B2kplpFq1AeucGZWbHZqRWlCNTQ
Sensing for Sustainability: Disaggregated Sensing of Electricity, Gas, and WaterEric Larson
This document summarizes research on disaggregated sensing of water, electricity, and natural gas usage presented by Eric Larson, a PhD candidate at the University of Washington. It describes work on developing low-cost sensing systems called ElectriSense, GasSense and HydroSense to monitor appliance-level usage. Evaluation of ElectriSense in homes showed it could identify electrical events like lamps and laptops turning on with 95% accuracy. GasSense used microphones to detect natural gas events like regulators hissing with similar accuracy. HydroSense monitored home water pressure and usage.
This document discusses electrical safety and terms. It defines key concepts like conductors, insulators, electrical charge, current and static electricity. It lists common electrical terms like ampere, ohm, volt, resistance, generator and switch. Static electricity is highlighted as a hazard in operating rooms that can cause sparks and ignite fires, though it does not directly endanger patients. Proper grounding is important to dissipate static accumulation and reduce risks.
Electrostatic discharge (ESD) occurs when a charged object discharges to another object. As little as a few thousand volts of static electricity can damage electronic components. ESD events are caused by the rapid movement of electric charges, such as from walking on carpet and then touching a metal doorknob. While an ESD event may not immediately damage a component, effects may show up over time. ESD costs the electronics industry millions annually in damaged parts. Proper ESD control programs focus on reducing static charge generation and accumulation, as well as safely dissipating any charges that do occur through grounding of people and conductive materials.
The document discusses electrostatic discharge (ESD) and provides information on controlling ESD in electronics manufacturing environments. Some key points:
- ESD occurs when a charged object discharges to another object, which can damage electronic components. Static electricity builds up from friction and movement.
- ESD costs the electronics industry millions annually in damaged parts. Despite efforts, ESD still affects production yields and costs.
- Controlling ESD involves designing products to withstand ESD, reducing charge generation, grounding conductive materials to dissipate charges, and neutralizing charges that do occur.
This document provides an overview of converting sound energy to electricity. It discusses piezoelectric crystals and Sonea devices that can directly convert sound into electricity. Acoustic sound harvesting is described as the process of capturing sound energy, storing it, and controlling it for small devices. An experiment conducted in London successfully harvested the power of footfall and generated electricity. Potential applications of this conversion technique include powering small devices and sensors. While it can utilize wasted sound energy, limitations include low power densities of sound waves.
1) This document discusses a technology that can convert sound energy into electrical energy using a piezoelectric effect. Researchers from Texas and the University of Houston developed this concept using piezoelectric materials around 21 nanometers thick.
2) The technology works by using piezoelectric nanogenerators that convert mechanical energy from vibrating sound absorbing pads and zinc electrodes into electrical energy to charge batteries.
3) This sound-powered technology could allow devices to be charged using ambient sounds and has applications to capture wasted noise energy from traffic or other sources for power generation.
This document provides parts lists and instructions for a basic electricity/electronics workshop. It lists required parts like a power supply, multimeter, breadboard, wires, LED, resistors, capacitor, and transistor. It then provides explanations of key electrical concepts like current, voltage, resistance, and Ohm's law. It also explains how to identify the positive and negative terminals of a power supply using a multimeter and how breadboards work for building circuits.
The document provides an introduction to electricity including its definition, uses, generation, transmission, and distribution. It discusses the various dangers of electricity including electric shock, burns, neurological damage, ventricular fibrillation, arc flash, and statistics on electrical accidents. The dangers are higher from electrical installations in public places where safety precautions are not taken. Indian Electricity Rules 36 and 40 mandate safety requirements for handling electrical supply lines and apparatus as well as street boxes, but as images later show, these rules are often not followed. Ensuring electrical safety, especially in public areas, is important to minimize accidents.
The document discusses resistors and their use in electric circuits. A resistor resists the flow of electric current and is made of materials like carbon or metal wires. The document then describes an experiment using a 2B pencil to act as a resistor by drawing a dark shape on paper and connecting it to a battery and LED. It finds that darker pencil marks provide more resistance and better allow the LED to light up compared to lighter marks. In conclusion, while objects like pencils can act as resistors, real resistors are still necessary for electric circuits due to providing more precise and reliable resistance.
various type of artifacts in ECG signal & how it's removeManish Kumar
The document is a term paper on biomedical instrumentation and processing that discusses sources of artifacts in electrocardiogram (ECG) signals. It outlines various internal and external sources of artifacts like muscle activity, skin stretching, 60 Hz interference from AC power, and issues with electrodes. It then describes methods to remove artifacts like good skin preparation, checking for interference and electrode issues, using appropriate filters, and ensuring the patient is relaxed and motionless. The conclusion reiterates that understanding artifact sources and electrode application can significantly reduce issues.
Induction cooktops use electromagnetic fields to heat pans quickly and efficiently. While induction produces low-frequency radiation, studies show daily use poses little risk to health. Controversy over other electromagnetic field (EMF) sources is due to early studies linking power lines to cancer, but subsequent research found no clear evidence of health effects from levels produced by appliances. While induction cooktops emit EMFs like other electric devices, the levels during normal use are considered safe.
This document is a seminar report on wireless electricity submitted by Ram Krishna Pandey to partial fulfillment of a B.Tech degree in electrical and electronics engineering. The report discusses the history of wireless power transmission including Nikola Tesla's experiments in the late 1800s. It describes modern wireless power techniques including inductive coupling, resonant inductive coupling, and microwave power transmission. Applications discussed include powering devices in the home, mobile phones, notebooks, and other electronics without the need for wires or plugs.
These slides include a presentation about the connections between math and electricity (Ohm's law, calculating voltage and resistance) as well as how-to slides so that you can make your own math quiz that lights a bulb to confirm when you have the correct answer. Note, the animations won't come through in this upload but for several slides I had the kids try to calculate the answers to my questions before I showed the answers.
This document provides descriptions of several exhibits designed and built by Richard Gagnon for museums. It summarizes several electrical circuit exhibits that allow exploration of concepts like AC vs DC electricity without wires. It also describes electronics exhibits using blocks to explore concepts like amplification and radio transmission. Additional exhibits explore optics, magnetism, heat, sound, and light.
This document discusses piezoelectricity and its use in energy harvesting. It begins with a brief history of piezoelectricity's discovery. It then explains the basic components and working principle of a piezoelectric energy harvesting circuit using diodes, a capacitor, switch, and LED. Applications discussed include using piezoelectric sensors in floors, gym equipment, vehicles, keyboards to harvest vibration energy. Both advantages like being pollution-free and disadvantages like low output are summarized. The document concludes that piezoelectric energy harvesting is a promising green energy source.
A development of a coin slot prepayment system for household electricityHarhar Caparida
This document presents a technical research on the development of a coin slot prepayment system for household electricity. It was conducted by three students from the University of Mindanao in partial fulfillment of the requirements for a Bachelor of Science degree in Computer Engineering. The study aimed to design and develop a coin slot prepayment system using a peripheral interface controller, wattmeter, and circuit breaker. It provides a convenient method for tenants in a boarding house to pay for electricity through coin slots and monitors their daily usage. The findings of the study include a bill of materials and costs for developing the system.
This document summarizes a paper about different types of power problems. It begins by introducing the topic and defining key power quality issues like transients, interruptions, sag/swell, and waveform distortion. It then describes the causes and effects of different types of transients, including impulsive transients from lightning and oscillatory transients from switching operations. Standards for defining and measuring power problems are also discussed. The document provides examples and diagrams to illustrate power quality events. In summary, it provides an overview of common power problems, their characteristics, causes, and potential impacts.
This document compares the mean square error of using feed forward back propagation (FFBP) and radial basis function (RBF) neural network algorithms to calculate the cut-off frequency of a band pass finite impulse response (FIR) digital filter with a Hanning window. A table shows the actual cut-off frequencies, the cut-off frequencies calculated by each algorithm, and the mean square errors for each algorithm. The FFBP and RBF neural networks are tested on filter coefficient data with an actual Hanning window cut-off frequency to calculate the cut-off frequency and determine which algorithm has lower error.
Aiming better gsm controls a possible approachDevesh Singhal
The document discusses improving control of grammage (GSM) in paper machines by modifying the approach flow system. Currently, variations in GSM occur when the secondary screen reject valve opens only briefly. The document proposes removing the secondary screen and installing a screw pump with a variable frequency drive-controlled motor after the main screen to continuously throttle the reject flow at a low level. This proposed system could eliminate GSM variations and fluctuations in the cross-machine profile while also providing energy savings by removing the secondary screen and reducing throughput needs.
Stack height often surprises me. Can we consider cutting short stacks of factories to reduce pollution, as the polluter would be faced to get into self compliance, willingly or unwillingly. Think.
Can we provide some space for viruses in our lives? A different thought, indicating what can be done to to live happily without a fear of virus and let it live its life.
Delhi-NCR air is becoming more and more polluted. We need to find a solution, that too very fast. The present concept note presents such a simple idea to solve the pollution problem.
When environment protection causes problemsDevesh Singhal
What happens when an industry starts treating effluent to achieve better and better than mandated norms? This is done by additional energy, capital cost and thus creates undesirable problems.
This document provides a concise summary of paper and the paper industry for students. It discusses the history of paper and how the paper making process has modernized. It also summarizes key facts about the paper industry in India, including production levels, recycling rates, and environmental practices. The document aims to enhance students' knowledge about paper and debunk common misconceptions.
The document discusses voltage fluctuations that can cause electrical motors and appliances to trip. It describes how fluctuations can originate from the power supply or internal wiring issues. Methods are presented to identify weak neutrals, measure fluctuation magnitude, and reduce tripping, such as installing a supervisory neutral bus or changing control power phases. The goal is to better understand fluctuations and minimize their impacts on production.
The document discusses the issue of plastic pollution and proposes solutions. It notes that plastics are a major source of pollution as most are not recycled. While plastics are very prevalent in modern life, the key issue is plastic waste management rather than plastics themselves. The paper industry could help by recycling products like paper cups and tetra packs that contain a high percentage of paper along with some plastic. This would remove plastic waste from the environment by collecting it along with recycled paper. Mandating that laminated packaging contain at least 75% paper would enable efficient recycling and reduce plastic pollution.
The document discusses rethinking the use of approach flow screening on paper machines. It notes that removing centrifugal cleaners from approach flow 10 years ago resulted in dramatic energy savings, improved basis weight control, reduced web breaks by over 75%, better steam control, and increased yield. The document observes temporary 0.5-0.7 gsm reductions in basis weight from the timer-operated reject valve on the current pressure screen and slot screen system. It questions whether the electricity costs and basis weight control problems from the approach screen outweigh its benefits as a "security guard" and suggests starting to think about removing approach screens.
Can our cooking create pollution?
While you prepare your delicious food, fumes containing particulate matter are added to atmosphere. Probably that is the reason that pollution index is generally found more in densely populated areas.
This document discusses how hair care products are a major source of pollution that is often overlooked. It notes that the water and chemicals used in shampoos, conditioners, dyes, and other hair products exceed the pollution produced by most major industries when considered globally. The author argues that wearing hats more often could help reduce this pollution by decreasing the need for frequent hair washing and product use. Wearing a hat for a month is proposed as a task people should accept to help raise awareness of hair care's environmental impact and potential solutions like cutting one's hair short.
The document proposes a concept to help reduce smog levels in Delhi using controlled artificial rain. It suggests installing vertical conical tunnels equipped with fans, pipes with shower nozzles, and water collection tanks. The tunnels would suck in polluted air from the bottom, spray it with water droplets of different sizes to "wash" the particulates, and expel cleaner air from the top. Initial trials could be conducted near polluted areas to monitor effectiveness. The author believes cooling tower manufacturers could build these units, which would cost less than 2 lakhs each and treat 1 million cubic meters of air daily. Feedback on this approach is requested.
Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...IJECEIAES
Medical image analysis has witnessed significant advancements with deep learning techniques. In the domain of brain tumor segmentation, the ability to
precisely delineate tumor boundaries from magnetic resonance imaging (MRI)
scans holds profound implications for diagnosis. This study presents an ensemble convolutional neural network (CNN) with transfer learning, integrating
the state-of-the-art Deeplabv3+ architecture with the ResNet18 backbone. The
model is rigorously trained and evaluated, exhibiting remarkable performance
metrics, including an impressive global accuracy of 99.286%, a high-class accuracy of 82.191%, a mean intersection over union (IoU) of 79.900%, a weighted
IoU of 98.620%, and a Boundary F1 (BF) score of 83.303%. Notably, a detailed comparative analysis with existing methods showcases the superiority of
our proposed model. These findings underscore the model’s competence in precise brain tumor localization, underscoring its potential to revolutionize medical
image analysis and enhance healthcare outcomes. This research paves the way
for future exploration and optimization of advanced CNN models in medical
imaging, emphasizing addressing false positives and resource efficiency.
Using recycled concrete aggregates (RCA) for pavements is crucial to achieving sustainability. Implementing RCA for new pavement can minimize carbon footprint, conserve natural resources, reduce harmful emissions, and lower life cycle costs. Compared to natural aggregate (NA), RCA pavement has fewer comprehensive studies and sustainability assessments.
Comparative analysis between traditional aquaponics and reconstructed aquapon...bijceesjournal
The aquaponic system of planting is a method that does not require soil usage. It is a method that only needs water, fish, lava rocks (a substitute for soil), and plants. Aquaponic systems are sustainable and environmentally friendly. Its use not only helps to plant in small spaces but also helps reduce artificial chemical use and minimizes excess water use, as aquaponics consumes 90% less water than soil-based gardening. The study applied a descriptive and experimental design to assess and compare conventional and reconstructed aquaponic methods for reproducing tomatoes. The researchers created an observation checklist to determine the significant factors of the study. The study aims to determine the significant difference between traditional aquaponics and reconstructed aquaponics systems propagating tomatoes in terms of height, weight, girth, and number of fruits. The reconstructed aquaponics system’s higher growth yield results in a much more nourished crop than the traditional aquaponics system. It is superior in its number of fruits, height, weight, and girth measurement. Moreover, the reconstructed aquaponics system is proven to eliminate all the hindrances present in the traditional aquaponics system, which are overcrowding of fish, algae growth, pest problems, contaminated water, and dead fish.
International Conference on NLP, Artificial Intelligence, Machine Learning an...gerogepatton
International Conference on NLP, Artificial Intelligence, Machine Learning and Applications (NLAIM 2024) offers a premier global platform for exchanging insights and findings in the theory, methodology, and applications of NLP, Artificial Intelligence, Machine Learning, and their applications. The conference seeks substantial contributions across all key domains of NLP, Artificial Intelligence, Machine Learning, and their practical applications, aiming to foster both theoretical advancements and real-world implementations. With a focus on facilitating collaboration between researchers and practitioners from academia and industry, the conference serves as a nexus for sharing the latest developments in the field.
Understanding Inductive Bias in Machine LearningSUTEJAS
This presentation explores the concept of inductive bias in machine learning. It explains how algorithms come with built-in assumptions and preferences that guide the learning process. You'll learn about the different types of inductive bias and how they can impact the performance and generalizability of machine learning models.
The presentation also covers the positive and negative aspects of inductive bias, along with strategies for mitigating potential drawbacks. We'll explore examples of how bias manifests in algorithms like neural networks and decision trees.
By understanding inductive bias, you can gain valuable insights into how machine learning models work and make informed decisions when building and deploying them.
A review on techniques and modelling methodologies used for checking electrom...nooriasukmaningtyas
The proper function of the integrated circuit (IC) in an inhibiting electromagnetic environment has always been a serious concern throughout the decades of revolution in the world of electronics, from disjunct devices to today’s integrated circuit technology, where billions of transistors are combined on a single chip. The automotive industry and smart vehicles in particular, are confronting design issues such as being prone to electromagnetic interference (EMI). Electronic control devices calculate incorrect outputs because of EMI and sensors give misleading values which can prove fatal in case of automotives. In this paper, the authors have non exhaustively tried to review research work concerned with the investigation of EMI in ICs and prediction of this EMI using various modelling methodologies and measurement setups.
TIME DIVISION MULTIPLEXING TECHNIQUE FOR COMMUNICATION SYSTEMHODECEDSIET
Time Division Multiplexing (TDM) is a method of transmitting multiple signals over a single communication channel by dividing the signal into many segments, each having a very short duration of time. These time slots are then allocated to different data streams, allowing multiple signals to share the same transmission medium efficiently. TDM is widely used in telecommunications and data communication systems.
### How TDM Works
1. **Time Slots Allocation**: The core principle of TDM is to assign distinct time slots to each signal. During each time slot, the respective signal is transmitted, and then the process repeats cyclically. For example, if there are four signals to be transmitted, the TDM cycle will divide time into four slots, each assigned to one signal.
2. **Synchronization**: Synchronization is crucial in TDM systems to ensure that the signals are correctly aligned with their respective time slots. Both the transmitter and receiver must be synchronized to avoid any overlap or loss of data. This synchronization is typically maintained by a clock signal that ensures time slots are accurately aligned.
3. **Frame Structure**: TDM data is organized into frames, where each frame consists of a set of time slots. Each frame is repeated at regular intervals, ensuring continuous transmission of data streams. The frame structure helps in managing the data streams and maintaining the synchronization between the transmitter and receiver.
4. **Multiplexer and Demultiplexer**: At the transmitting end, a multiplexer combines multiple input signals into a single composite signal by assigning each signal to a specific time slot. At the receiving end, a demultiplexer separates the composite signal back into individual signals based on their respective time slots.
### Types of TDM
1. **Synchronous TDM**: In synchronous TDM, time slots are pre-assigned to each signal, regardless of whether the signal has data to transmit or not. This can lead to inefficiencies if some time slots remain empty due to the absence of data.
2. **Asynchronous TDM (or Statistical TDM)**: Asynchronous TDM addresses the inefficiencies of synchronous TDM by allocating time slots dynamically based on the presence of data. Time slots are assigned only when there is data to transmit, which optimizes the use of the communication channel.
### Applications of TDM
- **Telecommunications**: TDM is extensively used in telecommunication systems, such as in T1 and E1 lines, where multiple telephone calls are transmitted over a single line by assigning each call to a specific time slot.
- **Digital Audio and Video Broadcasting**: TDM is used in broadcasting systems to transmit multiple audio or video streams over a single channel, ensuring efficient use of bandwidth.
- **Computer Networks**: TDM is used in network protocols and systems to manage the transmission of data from multiple sources over a single network medium.
### Advantages of TDM
- **Efficient Use of Bandwidth**: TDM all
Literature Review Basics and Understanding Reference Management.pptxDr Ramhari Poudyal
Three-day training on academic research focuses on analytical tools at United Technical College, supported by the University Grant Commission, Nepal. 24-26 May 2024
Advanced control scheme of doubly fed induction generator for wind turbine us...IJECEIAES
This paper describes a speed control device for generating electrical energy on an electricity network based on the doubly fed induction generator (DFIG) used for wind power conversion systems. At first, a double-fed induction generator model was constructed. A control law is formulated to govern the flow of energy between the stator of a DFIG and the energy network using three types of controllers: proportional integral (PI), sliding mode controller (SMC) and second order sliding mode controller (SOSMC). Their different results in terms of power reference tracking, reaction to unexpected speed fluctuations, sensitivity to perturbations, and resilience against machine parameter alterations are compared. MATLAB/Simulink was used to conduct the simulations for the preceding study. Multiple simulations have shown very satisfying results, and the investigations demonstrate the efficacy and power-enhancing capabilities of the suggested control system.
Batteries -Introduction – Types of Batteries – discharging and charging of battery - characteristics of battery –battery rating- various tests on battery- – Primary battery: silver button cell- Secondary battery :Ni-Cd battery-modern battery: lithium ion battery-maintenance of batteries-choices of batteries for electric vehicle applications.
Fuel Cells: Introduction- importance and classification of fuel cells - description, principle, components, applications of fuel cells: H2-O2 fuel cell, alkaline fuel cell, molten carbonate fuel cell and direct methanol fuel cells.
2. Have you noticed….Have you noticed….
Have you noticed the effects of
‘Electrical Pollution’?‘Electrical Pollution’?
Probably not.
Many of you must be wondering what is
Electrical Pollution?Electrical Pollution?
Let us view some situations.
Electrical Pollution, December 2017
3. Have you noticed….Have you noticed….
In some (old) houses, the tubelights
sometime flicker even when switched off.sometime flicker even when switched off.
Electricity supply is switched off, still,
often at night or in the dark, you see the
bundles of light travelling from one side of
tube-light to the other side.
Electrical Pollution, December 2017
4. Have you noticed….Have you noticed….
In some old factories (still running),
occasionally the indicator lamps glow (aoccasionally the indicator lamps glow (a
little dim, of course) even when the
motors are switched off.
Electrical Pollution, December 2017
5. Have you noticed….Have you noticed….
The electronic display devices (digital
indicators, gauges etc.) show a fluctuationindicators, gauges etc.) show a fluctuation
in readings occasionally.
This fluctuation might be small, or
significant in a few cases; may be
associated with start/stop of some other
appliances, but, it exists.appliances, but, it exists.
Electrical Pollution, December 2017
6. Have you noticed….Have you noticed….
The rpm (speed) display of anyVFD on its
display panel is constant, still some of thedisplay panel is constant, still some of the
drive equipment or even the process
equipment indicate minor speed variation.
Sometimes, a vice-versa situation also
appears.
Electrical Pollution, December 2017
7. The EarthThe Earth
Our earth is a good conductor.
For every transformer, every panel, everyFor every transformer, every panel, every
VFD, every motor, the neutral is
connected to the ground.
In some cases, the ground current might
be significant enough to create localized
potential buildup.
And we believe, that the Earth is always
at Zero Potential.
Electrical Pollution, December 2017
8. Is Earth always atIs Earth always at Zero PotentialZero Potential
In fact, the neutral wires also carry some
current. With increased usage of non-linearcurrent. With increased usage of non-linear
loads (CFL, LED,VFD etc.), sometimes the
current spikes are also present.
As a result, there could be some minute
potential momentarily available in ground
wire.
This way, getting theoretically ZeroThis way, getting theoretically Zero
potential on every place on earth is not
always possible.
Electrical Pollution, December 2017
9. Neutral WireNeutral Wire
To add to the problem, in several
installations, the neutral wire and groundinstallations, the neutral wire and ground
wire are not given adequate importance.
It has been seen that some electrical
professionals are confused about if the
neutral and ground denote same thing or
two different things.two different things.
Electrical Pollution, December 2017
10. Further IssuesFurther Issues
With increase in mobile communication,
radio-waves and other high frequencyradio-waves and other high frequency
signals are also present in the
environment.
Electrical Pollution, December 2017
11. Problems Faced due to ElectricalProblems Faced due to Electrical
PollutionPollution
It has been found by several doctors and
experts that electrical pollution results inexperts that electrical pollution results in
sudden spikes in blood pressure, blood sugar
level, wild cardiac arrhythmia, loss of sleep
etc.
There could be many more, and can be
searched by surfing the net on “Electrical
Pollution”. An interesting article could be-Pollution”. An interesting article could be-
http://www.mnwelldir.org/docs/misc/elect
rical_pollution.htm
Electrical Pollution, December 2017
12. ATypical CaseATypical Case
On the next slide, we’ll see a typical case
where this ‘electrical pollution’ could havewhere this ‘electrical pollution’ could have
taken the life of a patient, if not attended
in time.
This is a real story and the details have
been taken from published reference.
Electrical Pollution, December 2017
13. A Case StudyA Case Study
In the pre-op area of a large hospital operating room, a man was prepared
for surgery. He was sedated, and all looked like it would follow a normal
path of progress. But as the man was wheeled closer to the operating
room, all of the medical machines attached to his body began givingroom, all of the medical machines attached to his body began giving
strange readings. His EKG (to measure his heart voltage) showed a high
degree of noise.At first, the attendants thought the man’s heart was going
into arrhythmia. But his breathing was slow and consistent with his
sedation. Other machines also exhibited a great deal of noise. It was hard
to tell what the man’s blood pressure and heart rate actually were, though
visual indicators showed him to be resting comfortably. One attendant
was well versed in the theory of radiation and electromagnetic waves. On
a hunch, he took the patient’s arm and touched it to the metal “bed” on
which he was being wheeled.At this point, the noise stopped completely.which he was being wheeled.At this point, the noise stopped completely.
All readings for EKG, pulse, and blood pressure were normal.The patient
had somehow become an antenna for stray radiation. By grounding the
patient to the bed rail, the radiation found a path to ground, and the
patient became neutral, except for the normal electric potentials
generated by his body.
Electrical Pollution, December 2017
14. Details about the study…Details about the study…
Details about that study can be obtained
from-from-
https://www.asee.org/documents/sections
/northeast/2011/ELECTRICAL-
GROUNDING-THEORY-AND-
APPLICATION.pdf
Electrical Pollution, December 2017
15. How to Detect?How to Detect?
In any manufacturing unit, if you are facing
the problems of fluctuation/alteration ofthe problems of fluctuation/alteration of
display meters with or without switching
other equipment/motors On/Off, suspect
it could be a cause.
Electrical Pollution, December 2017
16. How to Detect?How to Detect?
Have a separate transmitter (pressure or
temperature etc.) giving 4-20mA outputtemperature etc.) giving 4-20mA output
and a display device powered by 220V.
Handheld, battery operated devices do
not give proper indication in some cases.
If you observe change in display readings,
with switching On/Off of irrelevant
devices, check thoroughly the supply
system.
Electrical Pollution, December 2017
17. How to Detect?How to Detect?
In case of electromagnetic radiations, ask
experts to conduct an audit of the wholeexperts to conduct an audit of the whole
area.They can use sophisticated
equipment to find out the problem and its
intensity.
Electrical Pollution, December 2017
18. Corrective ActionsCorrective Actions
Connect an electric motor’s neutral
(body) to ground of supply transformer,(body) to ground of supply transformer,
or nearby earthing pit. A significant
current flow gives an indication that
grounding is inadequate for that motor.
Take care of proper earthing for that
motor, and check another.motor, and check another.
Electrical Pollution, December 2017
19. Corrective ActionsCorrective Actions
That way, you can find out and rectify
minor grounding related problems.minor grounding related problems.
For detailed evaluation, ask yourVFD
supplier to conduct a detailed study of
your facility. Most drive suppliers have
adequate instruments and capability to
detect and evaluate the level of problem;detect and evaluate the level of problem;
as well as knowledge and expertise for
the same.
Electrical Pollution, December 2017
20. What’s NextWhat’s Next
Never ignore the importance of good
electricity.We need to identify impurityelectricity.We need to identify impurity
from it and remove, before it creates
problem.
Share your experiences with electrical
experts, and others.
Search Google for “Dirty Electricity” or
“Electrical Pollution”.
Electrical Pollution, December 2017
22. My Books:
My e-book "Wipe up that Grease" giving several interesting
mechanical engineering case studies, can be obtained from-mechanical engineering case studies, can be obtained from-
https://shar.es/182p00
My ebook on management case studies “Gathering the Rolling
Experiences” is available at POTHI.COM. The link for the same
is: https://shar.es/1TWBv1
Sample pages can be seen by clicking above links.Sample pages can be seen by clicking above links.
D K Singhal
deveshksinghal@gmail.com
Electrical Pollution, December 2017