Chemical engineering environmental engineering nptel. Applies both to intrinsic and extrinsic noise intrinsic noise is the noise generated inside. The main source of noise pollution is the contribution of sound from vehicles, aircraft noise, loud speaker, industrial machines and other source of sound. Clear understanding of concepts are indeed essential, but at the same time, adequate practice is pre requisite to crack gate with high marks. Pointsource pollution is usually easier to identify, monitor, measure, and control. Educational video lectures, tutorials nptel videos. Section 2 c of the environment protection act, 1986 defines environmental pollution to. L10, l50, l90, noise climate nc, equivalent continuous noise level leq, noise pollution level lnp and noise exposure index nei were computed for all zones. P tamilarasan, faculty member management, is given the responsibility as a single point of contact spoc as an institute coordinator between iiiier and swayamnptel, iit madras.
Streams usually can recover from many types of pollution due to dilution from fresh water and bacterial decay. Environmental engineering air pollution part i youtube. Further for better regulation for noise pollution there are the noise pollution regulation and control rules, 2000 in order to curb the growing problem of noise pollution the government of india has enacted the noise pollution rules 2000 that includes the following main provisions. Mohanty, department of mechanical engineering,iit kharagpur. To introduce the necessity to study turbulent reacting flows. Mukesh sharma department of civil engineering iit kanpur. Aug 24, 2018 air pollutants are a complex mix of chemicals emitted by human and natural sources and formed in the atmosphere. Discusses various features of air pollution and the current generation of atmospheric dispersion codes. Although there are a wide variety of mechanisms that can be the source of noise, the bottom line is that it is physically impossible to construct a noisefree channel. Nptel, online courses and certification, learn for free. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. To make the student familiar with the topic of air quality modelling.
Lecture notes atmospheric physics and chemistry chemical. Video lesson civil engineering noise pollution video lecture training, list videos, quiz, materials, useful links, documents and discussions for civil. Nptel syllabus environmental air pollution video course s topics no. The present generation and the coming generations have to solve three grave problems, namely, population poverty and pollution if they have to survive. Iiiier has been approved by swayamnptel to opened swayamnptel local chapter in the campus with the consent of swayamnptel office, iit madras. European green capital award nantes 2012 20 1 in total. Mar 26, 2015 mod01 lec21 basics of noise and noise monitoring. Lecture 11 causes, effects and control of noise and. Sources of noise pollution are many and may be located indoors or outdoors.
Fundamentals of environmental pollution and control. So, next comes the noise pollution, because noise pollution is very much. This lecture introduces a noise model based on a gaussian random variable. Noise in spinning section can be reduced by providing elastomeric spindle mounts, elastomeric ring holders and proper maintenance lubrication of gears, etc replacement of parts with resilient materials like nylon instead of metal can provide reduction in impulse noise of looms. You can find them according to your branch and subject in the below link national mission on education through ict this was initiated by iit madras. High concentrations of ozone are especially hazardous to children, the elderly, and people with respiratory problems.
Source, pollutant transport and impact on receptor 02 environmental quality and pollution. Definitiondefinitionnoise pollution can be defined as unwanted, unpleasant sound that causes discomfort for all living beings sound becomes unwanted when it interferes with normal activities, or disrupts or diminishes ones quality of life. Concept of air pollution control engineering control 1 control at the source of emission 2 control for receptors e. All produce air and noise pollution in some forms, and all utilize valuable land resources. Mod01 lec21 basics of noise and noise monitoring youtube. Lecture notes environmental pollution causes, effects and. Some of the courses can be downloaded to watch offline. A descriptor for cumulative 24hour exposure is the daynight sound level, abbreviated as l dn. Background on calculating mean and variance of probability density function is given alongside steps to estimate noise parameters and calculate bit energy. Free online courses with video lessons from best universities of the world. It may not seem as insidious or harmful as the contamination of drinking water supplies from hazardous. You will find all pdfs and also as mp3 file for all video lectures which are in nptel. This is a 24hour measure that accounts for the momenttomoment fluctuations in aweighte d noise levels due to all sound sources during 24 hours, combined.
Air pollution occurs when gases or aerosol particles, emitted anthropogenically, build up in. How to download all of the lectures in pdf for a course in. Nptel material is available for free on nptel website. Therefore, pollution of the atmosphere has profound and farreaching global impacts. Sound intensity of db is the upper limit of the threshold of hearing and beyond this, is the threshold of pain which may cause damage to car and leading to hearing impairment. Nptel provides elearning through online web and video courses various streams. Moreover, noise pollution may be a major factor in creating individual cognitive dissonance as well as mass societal neuroses. We will go to the environment acoustics 2 in the next lecture and then we will go to the. Although there are a wide variety of mechanisms that can be the source of noise, the bottom line is that it is physically impossible to construct a noise free channel. But, by understanding noise, we can develop approaches that reduce the probably that noise will lead to bit errors. As the noise level increases, man like other animals becomes more irritable and more prone to irrational and neurotic behavior. This document is highly rated by class 9 students and has been viewed 14700 times.
If you are not able to download lectures due to bandwidth constraints, you can obtain the courses in dvds by paying a nominal fee to cover the cost of storage media and distribution. Feb 12, 2016 i have cracked gate twice and i personally suggest these videos lectures. Mohanty,department of mechanical engineering,iit kharagpur. To present commonly used pollutant dispersion models. Machinery fault diagnosis and signal processing by prof. You can find most of the materialsnotes related to civil engineering. Find materials for this course in the pages linked along the left. Suggestion to eradicate noise pollution in textile industry. Gate civil engineering noise pollution video lecture training.
The goal of this site is presently to help the undergraduates pursuing b. Nptel computer science and engineering video lecture. Almost all living organisms rely on the gases found in the earths atmosphere, even those dwelling in the deepest oceans. It is measured on the decibel scale db and according to the world health organization, a noise level of above 85db is enough to cause permanent hearing loss after 8 hours of listening. Introduction to environmental engineering and science fundamental and sustainability concepts video. This statistical data is taken from the noise mapping carried out by nantes in accordance with european directive 200249ec of 25 june 2002. Lecture notes environmental pollution causes, effects. Noise is perhaps one of the most undesirable by products of modern mechanized lifestyle. Mark hodson, soil pollution and its impact on soil life 34 summary pollutants are generated by all sorts of human activities soil pollution is a wide spread problem pollutants have to be bioavailable to cause harm impacts occurs from the molecular to ecosystem scale quantification is by controlled testing and comparisons. Env100outdoor and indoor air pollution lecture notes. Nptel computer science and engineering video lecture online.
Distributed under creative commons attributionsharealike cc bysa. Courses from iits, mit, stanford, harvard, coursera, edx, futurelearn, udacity, udemy etc. Noise focus is on preventing hearing loss associated with noise exposure there are other physiologic effects of noise noiseinduced hearing loss has been observed for centuries prior to the industrial revolution, few people were exposed to high noise levels 6. Fundamentals of environmental pollution and control nptel. Civil engineering environmental air pollution nptel.
The pollution of noise can be caused by natural processes or by human activities. This work is licensed under a creative commons attribution. Nptel basic courses basic biology joint initiative of iits and iisc funded by mhrd page 15 of 17 noise pollution. Air pollutants are a complex mix of chemicals emitted by human and natural sources and formed in the atmosphere. For environmental health science students air pollution mengesha admassu, mamo wubeshet university of gondar in collaboration with the ethiopia public health training initiative, the carter center, the ethiopia ministry of health, and the ethiopia ministry of education august 2006. Gian video lectures on acoustics and industrial noise control please click to view the youtube playlist 20 hours coordinated by prof. Noise pollution is unwanted sounds introduced into our natural environment that results in an adverse change. An ieee definition of noise the ieee standard dictionary of electrical and electronics terms defines noise as a general term as. Lecture notes on air pollution objectives air pollution. All human activities contribute to noise pollution to varying extent. The greatest concern about ozone pollution is the potential damage it may inflict on human health. I have cracked gate twice and i personally suggest these videos lectures. Ozone also damages rubber, nylon, plastics, dyes, and paints. Virtual lab on mechanical systems and signal processing please click to view the experiments coordinated by prof.
Free video lectures, online courses and tutorials from. Pollution is a noise derived from the verb pollute. Lecture note course code bce1504 veer surendra sai. Lecture notes environmental pollution causes, effects and control of air edurev notes notes for class 9 is made by best teachers who have written some of the best books of class 9. Indoor sources include noise produced by radio, television, generators, electric fans, air coolers, air conditioners, different home. Which videos of nptel are a must watchbest for civil. Spend time on studying, not for searching material to study.
Indeed, prior to 1972 the only major federal activity in the field of noise control legislation was a 1968 amendment to the federal aviation act, whereby the faa was directed to regulate civil aircraft noise during landings and takeoffs, and including sonic booms. Nov 15, 2017 you will find all pdfs and also as mp3 file for all video lectures which are in nptel. Learn for free, pay a small fee for exam and get a certificate. Environmental air pollution introduction to atmosphere. Jan 19, 2016 may 05, 2020 lecture notes environmental pollution causes, effects and control of air edurev notes is made by best teachers of class 9. Lecture 11 causes, effects and control of noise and thermal pollution.
1132 1349 773 1273 391 133 1309 119 1465 266 660 1120 635 795 322 841 812 1034 155 865 452 377 20 329 1065 590 303 398 1387 9 1491 1425 157 1213 217 1476 1033 407 130