2016-08-03

Psychedelic Experience with Stanley Krippner


source: New Thinking Allowed    2016年6月27日
Stanley Krippner, Ph.D., professor of psychology at Saybrook University, is a Fellow in five APA divisions, and past-president of two divisions (30 and 32). Formerly, he was director of the Maimonides Medical Center Dream Research Laboratory, in Brooklyn NY. He is co-author of Dream Telepathy, Extraordinary Dreams and How to Work with Them, The Mythic Path, and Haunted by Combat: Understanding PTSD in War Veterans, and co-editor of Debating Psychic Experience: Human Potential or Human Illusion, Healing Tales, Healing Stories, Varieties of Anomalous Experience: Examining the Scientific Evidence, Advances in Parapsychological Research and many other books. He is a Fellow of the Society for the Scientific Study of Religion, and has published cross-cultural studies on spiritual content in dreams.

Here he describes his encounters, during the early days of the psychedelic movement, with such notable figures as Alan Watts, Timothy Leary, Ralph Metzner, Richard Alpert, Salvador Roquet, Maria Sabina, Jean Houston, Robert Masters, and the Grateful Dead. He maintains that psychedelic experiences have been uniformly positive for him – and that he always approaches them in terms of what can be learned. He suggests that marijuana, a mild psychedelic, has potential as a tool in psychotherapy. He favors decriminalization. However, more research is needed.

New Thinking Allowed host, Jeffrey Mishlove, PhD, is author of The Roots of Consciousness, Psi Development Systems, and The PK Man. Between 1986 and 2002 he hosted and co-produced the original Thinking Allowed public television series. He is the recipient of the only doctoral diploma in "parapsychology" ever awarded by an accredited university (University of California, Berkeley, 1980). He is also past-president of the non-profit Intuition Network, an organization dedicated to creating a world in which all people are encouraged to cultivate and apply their inner, intuitive abilities.
(Recorded on May 12, 2016)

Kevin Ahern's Biochemistry (2015) at Oregon State University

# click the upper-left icon to select videos from the playlist

source: Kevin Ahern     2015年3月30日
Ahern's BB 350 at OSU (2015)
1. Contact me at kgahern@davincipress.com / Friend me on Facebook (kevin.g.ahern)
2. Download my free biochemistry book at http://biochem.science.oregonstate.ed...
3. Take my free iTunes U course at https://itunes.apple.com/us/course/bi...
4. Check out my free book for pre-meds at http://biochem.science.oregonstate.ed...
5. Lecturio videos for medical students - https://www.lecturio.com/medical-cour...
6. Course video channel at http://www.youtube.com/user/oharow/vi...
7. Check out all of my free workshops at http://oregonstate.edu/dept/biochem/a...
8. Check out my Metabolic Melodies at http://www.davincipress.com/
9. My courses can be taken for credit (wherever you live) via OSU's ecampus. For details, see http://ecampus.oregonstate.edu/soc/ec...
10. Course materials at http://oregonstate.edu/instruct/bb350

1. Introduction 26:34
2. Water, Weak Acids, and pH
3. Buffers and Amino Acids 49:27
4. Amino Acids & Proteins 49:50
5. Protein Structure 52:37
6. Structure and Function of Hemoglobin 48:14
7. Protein Purification 51:10
8. Enzymes I 51:43
9. Enzymes II 51:51
10. Enzymes Control I 51:58
Review for Exam I 1:05:00
11. Enzymes Control II 46:20
12. Membrane Lipids 49:44
13. Membrane Lipids II 47:26
14. Nucleic Acids 51:50
15. DNA Replication 45:31
16. DNA Replication II 53:09
17. DNA Replication & Transcription 41:51
18. Transcription II 45:48
19. Transcription & Translation 44:46
Review Session for Exam 2 49:11
20. Translation II 39:42
21. Translation 3 & Biotechnology 51:32
22. Biotechnology 38:37
23. Biotechnology & Viruses 48:37
24. Carbohydrates 48:49
25. Carbohydrates & Energy 48:54
26. Glycolysis 49:44
Review for Exam 3 50:20
27. Glycolysis & Gluconeogenesis 46:09
28. Glycogen Metabolism 50:37
29. Citric Acid Cycle 44:29

Kevin Ahern: Biochemistry (2013) at Oregon State University

# click the upper-left icon to select videos from the playlist

source: Kevin Ahern    2013年4月3日
Kevin Ahern's lectures for his BB 350 Biochemistry course at Oregon State University, 2013.
1. Contact me at kgahern@davincipress.com / Friend me on Facebook (kevin.g.ahern)
2. Download my free biochemistry book at http://biochem.science.oregonstate.ed...
3. Take my free iTunes U course at https://itunes.apple.com/us/course/bi...
4. Check out my free book for pre-meds at http://biochem.science.oregonstate.ed...
5. Lecturio videos for medical students - https://www.lecturio.com/medical-cour...
6. Course video channel at http://www.youtube.com/user/oharow/vi...
7. Check out all of my free workshops at http://oregonstate.edu/dept/biochem/a...
8. Check out my Metabolic Melodies at http://www.davincipress.com/
9. My courses can be taken for credit (wherever you live) via OSU's ecampus. For details, see http://ecampus.oregonstate.edu/soc/ec...
10. Course materials at http://oregonstate.edu/instruct/bb350

(Introduction) from Kevin Ahern's BB 350 49:33
(Acids/Bases) from Kevin Ahern's BB 350 39:54
(Buffers) from Kevin Ahern's BB 350 40:23
(Amino Acids) from Kevin Ahern's BB 350 45:41
(Protein Structure) from Kevin Ahern's BB 350 49:20
(Hemoglobin) from Kevin Ahern's BB 350 49:24
(Protein Purification) from Kevin Ahern's BB 350 48:26
(Gels/Enzymes) from Kevin Ahern's BB 350 47:27
(Enzymes II) from Kevin Ahern's BB 350 50:47
10 (Enzyme Regulation) from Kevin Ahern's BB 350 48:39
Review Session #1 for Kevin Ahern's BB 350 Class 1:00:48
11 (Enzyme Regulation II) from Kevin Ahern's BB 350 35:24
12 (Enzymes and Lipids) from Kevin Ahern's BB 350 45:36
13 (Lipids and Membranes) from Kevin Ahern's BB 350 46:36
14 Membranes III / Nucleic Acids I - Kevin Ahern's Biochemistry Online 41:58
15 (DNA Structure and Replication) from Kevin Ahern's BB 350 51:17
16 (DNA Replication II) from Kevin Ahern's BB 350 47:35
17 DNA Replication III & Transcription) from Kevin Ahern's BB 350 Broadband 49:59
18 (Transcription II) from Kevin Ahern's BB 350 Broadband 46:22
19 (Translation) from Kevin Ahern's BB 350 48:29
20 (Translation II) from Kevin Ahern's BB 350 42:33
Review Session for BB 350 Exam #2 46:43
21 (Biotechnology) from Kevin Ahern's BB 350 49:49
22 (Viruses, Cancer and Oncogenes) from Kevin Ahern's BB 350 48:02
23 (Immunology and Energy) from Kevin Ahern's BB 350 51:12
24 (Carbohydrate Structure) from Kevin Ahern's BB 350 48:31
25 (Carbohydrates and Glycolysis) from Kevin Ahern's BB 350 49:08
26 (Glycolysis & Metabolism) from Kevin Ahern's BB 350 34:44
27 (Gluconeogenesis) from Kevin Ahern's BB 350 52:23
28 (Glycogen Metabolism) from Kevin Ahern's BB 350 49:53
29 (Citric Acid Cycle) from Kevin Ahern's BB 350 44:30
Review Session For Exam 3 34:11
30 (Electron Transport and Respiration) from Kevin Ahern's BB 350 41:10
31 (Lipid/Fat Metabolism I) from Kevin Ahern's BB 350 50:50
32 (Lipid Fat Metabolism II) from Kevin Ahern's BB 350 40:43
33 (Lipid Fat Metabolism III) from Kevin Ahern's BB 350 48:37
34 (Photosynthesis) from Kevin Ahern's BB 350 50:38
35 (Nitrogen and Amino Acid Metabolism) from Kevin Ahern's BB 350 47:11
36 Protein Charge Problems Solved 18:45

BB 350 Biochemistry Lectures by Kevin Ahern (Oregon State University)

# click the upper-left icon to select videos from the playlist

source: Kevin Ahern     2012年4月2日
BB 350 Biochemistry Lectures by Kevin Ahern
A collection of Kevin Ahern's lectures for his BB 350 (Elementary Biochemistry) course at Oregon State University
1. Contact me at kgahern@davincipress.com / Friend me on Facebook (kevin.g.ahern)
2. Download my free biochemistry book at http://biochem.science.oregonstate.ed...
3. Take my free iTunes U course at https://itunes.apple.com/us/course/bi...
4. Check out my free book for pre-meds at http://biochem.science.oregonstate.ed...
5. Course video channel at http://www.youtube.com/user/oharow/vi...
6. Check out all of my free workshops at http://www.youtube.com/playlist?list=...
7. Check out my Metabolic Melodies at http://www.davincipress.com/metabmelo...
8. Take my courses for credit (wherever you live) via OSU's ecampus. For details, see http://ecampus.oregonstate.edu/soc/ec...
9. Course materials at http://oregonstate.edu/instruct/bb350

Introduction - Kevin Ahern's Biochemistry Online (Introductions) 57:50
Water and Buffers, Part 1 - Kevin Ahern's Biochemistry Online 50:28
Water and Buffers, Part 2 - Kevin Ahern's Biochemistry Online 33:25
Amino Acids - Kevin Ahern's Biochemistry Online 52:45
Protein 3D Structure I - Kevin Ahern's Biochemistry Online 54:03
Protein 3D Structure II - Kevin Ahern's Biochemistry Online 51:34
Protein 3D Structure III / Protein Purification I - Kevin Ahern's Biochemistry Online 31:23
Protein Purification II / Enzymes I - Kevin Ahern's Biochemistry Online 48:40
Enzymes 2 - Kevin Ahern's Biochemistry Online 48:01
Enzymes 3 - Kevin Ahern's Biochemistry Online 51:48
Review Session for Exam #1 45:41
Enzymes 4 - Kevin Ahern's Biochemistry Online 52:55
Enzymes 5 / Membranes I - Kevin Ahern's Biochemistry Online 48:56
Membranes II - Kevin Ahern's Biochemistry Online 49:00
Membranes III / Nucleic Acids I - Kevin Ahern's Biochemistry Online 41:58
Nucleic Acids II - Kevin Ahern's Biochemistry Online 49:41
DNA Replication I - Kevin Ahern's Biochemistry Online 51:48
DNA Replication II/Transcription I - Kevin Ahern's Biochemistry Online 52:42
Transcription II - Kevin Ahern's Biochemistry Online 41:17
Transcription III / Translation I - Kevin Ahern's Biochemistry Online 41:26
Review Session for Exam 2 25:48
Translation II - Kevin Ahern's Biochemistry Online 49:54
Translation III / Biotechnology I - Kevin Ahern's Biochemistry Online 49:14
Biotechnology II / Viruses I - Kevin Ahern's Biochemistry Online 49:31
Immune System, Oncogenes, Energy - Kevin Ahern's Biochemistry Online 46:30
Energy II / Carbohydrates - Kevin Ahern's Biochemistry Online 50:16
Carbohydrates / Glycolysis - Kevin Ahern's Biochemistry Online 52:59
Glycolysis - Kevin Ahern's Biochemistry Online 39:04
Gluconeogenesis - Kevin Ahern's Biochemistry Online 50:05
Pentose Phosphate / Citric Acid - Kevin Ahern's Biochemistry Online 46:16
Glyoxylate cycle / Electron Transport / OxPhos - Kevin Ahern's Biochemistry Online 51:20
Respiratory Control / Lipid Metabolism - Kevin Ahern's Biochemistry Online 46:41
Fatty Acid Oxidation and Synthesis - Kevin Ahern's Biochemistry Online 34:57
Fatty Acid Synthesis & Cholesterol - Kevin Ahern's Biochemistry Online 53:30
Photosynthesis - Kevin Ahern's Biochemistry Online 51:48
Nitrogen Metabolism - Kevin Ahern's Biochemistry Online 53:27
Nitrogen Metabolism - Kevin Ahern's Biochemistry Online 43:15

Understanding and improving children's lives in Ethiopia, India, Peru and Vietnam


source: University of Oxford    2016年6月30日
www.younglives.org.uk
Young Lives is an international study of childhood poverty following the lives of 12,000 children in Ethiopia, India (in the states of Andhra Pradesh and Telangana), Peru and Vietnam over 15 years.
Find out how understanding the changes in children's lives across time and space have been able to influence government policy.

Algorithms and Online Dating Won't Change Your Ancient Brain | Helen Fisher


source: Big Think    2016年7月25日
Anthropologist Helen Fisher weighs in on how dating apps like Tinder and online dating sites change the way we love.Fisher's latest book is "Anatomy of Love: A Natural History of Mating, Marriage, and Why We Stray" (http://goo.gl/aRST8n).
Read more at BigThink.com: http://bigthink.com/videos/helen-fish...

Peter Singer: "Famine, Affluence, and Morality" | Talks at Google


source: Talks at Google     2016年7月6日
Talks at Google was honoured to host the esteemed philosopher Peter Singer to discuss his seminal work Famine, Affluence, and Morality and what it means to live a moral life in a grossly unequal world.
Recorded in London, June 2016
You can follow Peter on Twitter - @PeterSinger
Originally published in 1972, “Famine, Affluence, and Morality” is one of the most widely discussed essays in applied ethics. He argues that we have the same moral obligations to those living far away as we do to those close to us - choosing not to send life saving money to starving people on the other side of the world is the moral equivalent of neglecting to save a drowning child because we would prefer not to muddy our shoes. If we can help, we must - and any excuse is hypocrisy.
Peter Singer specialises in applied ethics and approaches ethical issues from a secular, utilitarian perspective - and few people are better placed to advise on what actions we ought to take to lead moral lives.
The book on Google Play: https://play.google.com/store/books/d...

About the book:
In 1972, the young philosopher Peter Singer published "Famine, Affluence and Morality," which rapidly became one of the most widely discussed essays in applied ethics. Through this article, Singer presents his view that we have the same moral obligations to those far away as we do to those close to us. He argued that choosing not to send life-saving money to starving people on the other side of the earth is the moral equivalent of neglecting to save drowning children because we prefer not to muddy our shoes. If we can help, we must--and any excuse is hypocrisy. Singer's extreme stand on our moral obligations to others became a powerful call to arms and continues to challenge people's attitudes towards extreme poverty. Today, it remains a central touchstone for those who argue we should all help others more than we do.
As Bill and Melinda Gates observe in their foreword, in the age of today's global philanthropy, Singer's essay is as relevant now as it ever was. This edition collects the original article, two of Singer's more recent popular writings on our obligations to others around the world, and a new introduction by Singer that discusses his current thinking.

About the author
Peter Singer has been described as the world's most influential philosopher. His books include Animal Liberation, Practical Ethics, Rethinking Life and Death, One World, The Life You Can Save, and The Point of View of the Universe. In 2014 the Gottlieb Duttweiler Institute ranked him third on its list of Global Thought Leaders, and Time has ranked him among the world's 100 most influential people.
Peter Singer is the Ira W. DeCamp Professor of Bioethics at Princeton University, and a Laureate Professor at the Centre for Applied Philosophy and Public Ethics at the University of Melbourne.

'Smart Glasses' offer help to near-blind people


source: University of Oxford     2014年6月17日
Learn more about Oxford 'smart glasses' here: http://www.eye.ox.ac.uk/research/oxfo...
Professor Stephen Hicks and his colleagues explain the technology behind their smart glasses, sensing and redisplaying depth and outline information to allow partially-sighted people to navigate.
www.ox.ac.uk/research

Eric Dinerstein: "What Elephants Know" | Talks at Google


source: Talks at Google    2016年7月25日
Dr. Eric Dinerstein is the Director of the Biodiversity and Wildlife Solutions Program at RESOLVE. He focuses on applying new technologies to better protect and monitor endangered wildlife. For much of the past 25 years he was Chief Scientist at the World Wildlife Fund.
He came up with the idea of a Global Tiger Summit in 2010 to double the world's tiger population by 2022. More recently, he's been developing cost-effective night-vision goggles for wildlife rangers and smart camera anti-poaching devices. His most recent effort is to promote the concept popularized by Dr. E.O. Wilson of Nature Needs Half—setting aside half of the Earth’s terrestrial ecoregions to save a living planet and avoid the extinction and climate crises.

Joyce M. Bell | Race and Resistance || Radcliffe Institute


source: Harvard University    2016年3月11日
As part of the 2015–2016 Fellows’ Presentation Series at the Radcliffe Institute for Advanced Study, Joyce M. Bell RI ’16 addresses questions about the legacy of the Black Power Movement.

Connectivity is Destiny | RSA Replay | Parag Khanna


source: The RSA    2016年6月1日
It is time to reimagine how life is organized on Earth. We're accelerating into a future shaped less by countries and more by mega-cities; less by borders and more by connectivity. A world in which the most connected powers, and people, will win. Leading strategist Parag Khanna shows how the global connectivity revolution - in transport, infrastructure, communications - has upended the ‘geography is destiny’ mantra, and how connectivity, not sovereignty, has become the organizing principle of 21st century society.

Wesley Cecil: Ludwig Wittgenstein--His Life and Philosophy


source: Wes Cecil    2012年8月30日
A lecture covering the life and philosophy of Ludwig Wittgenstein.
For information on upcoming lectures, essays, and books by Wesley Cecil Ph.D. go to http://www.facebook.com/HumaneArts

A. K. Sharma: Population and Society (IIT Kanpur)

# playlist of the 39 videos (click the up-left corner of the video)

source: nptelhrd    2012年1月25日
Humanities - Population and Society by Prof. A. K. Sharma, Department of Humanities and Social Sciences, IIT Kanpur For more details on NPTEL visit http://nptel.iitm.ac.in

Lec-01 Introduction 1:03:04
Lec-02 Basics Concepts 47:45
Lec-03 Perspectives On Population 53:16
Lec-04 Indian Society 56:51
Lec-05 Social Change in India 55:59
Lec-06 India:A Developing Economy 55:44
Lec-07 Methodology 59:38
Lec-08 Primary and Secondry Data and Related Issues 58:25
Lec-09 Sources of Population Data 56:16
Lec-10 Participatory Rural Appraisal 55:08
Lec-11 Demographic Models 1:23:07
Lec-12 Demographic models-II 50:30
Lec-14 World Population Growth 57:31
Lec-15 Demographic Transition in the Nineteenth and Twentieth Centuries 53:06
Lec-16 Demographic schism between Developed and Developing Countries and Future Prospects 55:52
Lec-17 History Of Growth 56:59
Lec-18 Population of India-II 56:57
Lec-19 Trends In Death and Birth Rates 58:44
Lec-20 Population projections,Migration and Future Prospects 1:01:11
Lec-21 Urbanization and Development 55:11
Lec-22 Urbanization in India 56:56
Lec-23 Theories Of urbanization and Development 1:01:01
Lec-24 Future Of Urbanization In India 58:17
Lec-25 Population Theories 58:20
Lec-26 Marxist theory Of Population 59:53
Lec-27 Demographic Transition Theory and Related Issues 58:45
Lec-28 Gandhian Theory Of population 58:31
Lec-29 Population Policy 52:52
Lec-30 Effectiveness Of population Policies 56:58
Lec-31 Family Planning Programme and Beyond 56:40
Lec-32 National Population Policy 52:21
Lec-33 The First Policy Statement 39:17
Lec-34 Subsequent Developments Leading To National Population Policy 2000 56:53
Lec-35 Ecological Degradation and Environmental Protection 46:15
Lec-36 Differences In Perception Between Developed and Developing Countries 42:47
Lec-37 Total Environment Impact and Beliefs 53:49
Lec-38 Emerging Issues In sociology Of Population 55:10
Lec-39 Population Issues In The framework of MDGs 57:46
Lec-40 Population Issues (Cont.) 57:45

Biswajit Mahanty: Management Information System (IIT Kharagpur)

# playlist of the 29 videos (click the up-left corner of the video)

source: nptelhrd    2011年6月13日
Lecture Series on Management Information System by Prof. Biswajit Mahanty, Department of Industrial Engineering & Management, IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in

1 - Introduction - I 54:37
2 - Introduction - II 54:16
3 - Introduction - III 52:32
4 - Concept of Information - I 53:52
5 - Concept of Information - II 54:54
6 - Decision Making Process 55:16
7 - Impact of IS on Management - I 54:55
8 - Impact of IS on Management - II 54:53
9 - Hardware Software Overview - I 56:19
10 - Hardware Software Overview - II 52:32
11 - Knowledge Management 55:29
12 - Learning Organization 55:19
13 - Decision Analysis - I 50:09
14 - Decision Analysis - II 54:59
15 - Decision Analysis - III 55:41
16 - Data Flow Diagrams - I 49:08
17 - Data Flow Diagrams - II 50:36
18 - Data Flow Diagrams - III 51:17
19 - Data Flow Diagrams - IV 50:33
20 - System Design - I 44:39
21 - System Design - II 42:54
22 - DBMS - I 55:01
23 - DBMS - II 52:11
24 - DBMS - III 46:27
25 - DBMS - IV 54:29
26 - DBMS - V 53:47
27 - OOAD - I 51:26
28 - OOAD - II 53:17
29 - OOAD - III 47:43

Switched Mode Power Conversion by L. Umanand & V. Ramanarayanan (IISc Bangalore)

# click the upper-left icon to select videos from the playlist

source: nptelhrd   2014年1月9日
Electrical - Switched Mode Power Conversion by Prof. L. Umanand & Prof. V. Ramanarayanan, Department of Electrical Engineering, IISc Bangalore. For more details on NPTEL visit http://nptel.ac.in

Lec-01 Introduction to DC-DC converter 51:34
Lec-02 Diode 58:00
Lec-03 Controlled Switches 57:24
Lec-04 Prior Art 56:31
Lec-05 Inductor 57:33
Lec-06 Transformer 57:15
Lec-07 Capacitor 55:37
Lec-08 Issues related to switches 57:15
Lec-09 Energy storage - Capacitor 56:42
Lec-10 Energy storage -- Inductor 54:10
Lec-11 Primitive Converter 57:55
Lec-12 Non-Isolated converter - I 58:03
Lec-13 Non-Isolated converter -- II 57:50
Lec-14 Isolated Converters - I 59:39
Lec-15 Isolated Converters -- II 59:37
Lec-16 Conduction Mode 59:10
Lec-17 Problem set - I 58:35
Lec-18 Problem set -- II 58:49
Lec-19 Modeling DC-DC converters 58:32
Lec-20 State space representation - I 1:00:12
Lec-21 State Space representation - II 1:01:32
Lec-22 Circuit Averaging - I 57:23
Lec-23 Circuit Averaging - II 1:01:25
Lec-24 State Space Model of Boost Converter 59:23
Lec-25 DC-DC converter controller 1:00:09
Lec-26 Controller Structure 59:59
Lec-27 PID Controller - I 59:26
Lec-28 PID Controller - II 59:00
Lec-29 PID Controller - III 1:01:22
Lec-30 Implementation of PID controller 1:01:43
Lec-31 Pulse Width Modulator 1:00:10
Lec-32 Controller Design - I 1:03:34
Lec-33 Controller Design -- II 58:18
Lec-34 Controllers and Sensing Circuit 1:00:51
Lec-35 Regulation of Multiple outputs - I 59:48
Lec-36 Regulation of Multiple outputs - II 59:56
Lec-37 Current Control 59:43
Lec-38 Unity Power Factor Converter 59:08
Lec-39 Magnetic Design 58:37
Lec-40 DC-DC Converter Design 1:22:18

Rajesh Srivastava: Water Resources Engineering (IIT Kanpur)

# playlist of the 29 videos (click the up-left corner of the video)

source: nptelhrd 2008年2月5日
Lecture Series on Water Resources Engineering by Prof. Rajesh Srivastava, Department of Civil Engineering, IIT Kanpur. For more details on NPTEL visit http://nptel.iitm.ac.in

Lecture 1 - Water Resources Engineering 39:58
Lecture 02 57:29
Lecture 03 57:56
Lecture 04 53:58
Lecture 05 54:38
Lecture 06 54:34
Lecture 07 1:00:37
Lecture 08 58:21
Lecture 09 1:01:53
Lecture 10 57:42
Lecture 11 59:02
Lecture 12 55:40
Lecture 13 1:01:08
Lecture 14 1:00:53
Lecture 15 56:22
Lecture 16 55:36
Lecture 17 59:37
Lecture 18 58:50
Lecture 19 48:39
Lecture 20 1:00:31
Lecture 21 1:01:56
Lecture 22 1:02:30
Lecture 23 59:01
Lecture 24 50:34
Lecture 25 40:36
Lecture 26 54:13
Lecture 27 52:26
Lecture 28 52:29
Lecture 29 - Water Resources Engineering 52:29