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Title          
Solar Hybrid Power Plant 
   
 
Abstract

Solar Hybrid Power Plant seminar by Hadley from Mechanical Enginnering at University of Maryland, College park

 
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Added By - sidpatel
Subject - Energy
Document Type - Seminars and Presentations
Video Duration - 00:31:10
 
 
 

 

Title          
Cardio-Vasular Tissue Biomechanics 
   
 
Abstract
Danial Shahmirzadi from the University of Maryland, Dept. of Mechanical Engineering explains the experimentation and modeling involved in cardio-vascular tissue biomechanics.
 
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Added By - sidpatel
Subject - Mechanical Engineering
Document Type - Seminars and Presentations
Video Duration - 00:46:37
 
 
 

 

Title          
Manifold Microchannel Cooler for Direct Backs... 
   
 
Abstract
Manifold Microchannel Cooler for Direct Backside Liquid Cooling of SiC Power Devices, presented by Lauren Everhart at the Mechanical Engineering Summer Lecture series at the University of Maryland (July 2008). Power semiconductor devices are semiconductor devices used as switches or rectifiers in power electronic circuits (switch mode power supplies for example). They are also called power devices or when used in integrated circuits, called power ICs. Some common power devices are the power diode, thyristor, power MOSFET and IGBT (insulated gate bipolar transistor). A power diode or MOSFET, for example, operates on similar principles as its low-power counterpart, but is able to carry a larger amount of current and typically is able to support a larger reverse-bias voltage in the off-state. Structural changes are often made in power devices to accommodate the higher current density, higher power dissipation and/or higher reverse breakdown voltage. The vast majority of the discrete (i.e non integrated) power devices are built using a vertical structure, whereas small-signal devices employ a lateral structure. With the vertical structure, the current rating of the device is proportional to its area, and the volta...
 
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Added By - researchusa
Subject - Mechanical Engineering
Document Type - Seminars and Presentations
Video Duration - 00:31:19
 
 
 

 

Title          
Lisa Randall Lecture 
   
 
Abstract

The Lavin Agency presents Lisa Randall, one of the most cited scientists in the world, and author of the influential book on string theory, Warped Passages: Unraveling the Mysteries of the Universe's Hidden Dimensions. Lisa Randall (born 18 June 1962) is an American theoretical physicist and a leading expert on particle physics and cosmology. She works on several of the competing models of string theory in the quest to explain the fabric of the universe, and was the first tenured woman in the Princeton University ph...

 
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Added By - autocrawler
Subject - Physics
Document Type - Seminars and Presentations
Video Duration - 00:06:50
 
 
 

 

Title          
DNA transcription 
   
 
Abstract
Transcription is the process by which genetic information from DNA is transferred into RNA. DNA sequence is enzymatically copied by RNA polymerase to produce a complementary nucleotide RNA strand. One significant difference between RNA and DNA sequence is the presence of U, or uracil in RNA instead of the T, or thymine of DNA. In the case of protein-encoding DNA, transcription is the first step that ultimately leads to the translation of the genetic code, via the mRNA intermediate, into a functional peptide or protein. The stretch of DNA that is transcribed into an RNA molecule is called a transcription unit. A transcription unit that is translated into protein contains sequence that directs and regulates protein synthesis in addition to coding sequence that is translated into protein. Regulatory sequence that is before, or 5', of the coding sequence is called 5' untranslated (5'UTR) sequence, and sequence found following, or 3', of the coding sequence is called 3' untranslated (3'UTR) sequence. Transcription has some proofreading mechanisms, but they are fewer and less effective than the controls for copying DNA; therefore, transcription has a lower copying fidelity than DNA replication.

Acknowledgement: Wikipedia
 
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Added By - pierce
Subject - Bioengineering
Document Type - Seminars and Presentations
Video Duration - 00:02:50
 
 
 

 

Title          
Becoming a Pilot 
   
 
Abstract
An aviator is a person who flies aircraft for pleasure or as a profession. The word is normally applied to pilots, but it can be applied more broadly, for example to include people such as wing-walkers who regularly take part in an aerobatic display sequence. The word aviatrix is sometimes used of women flyers, reflecting the word's Latin root.

The term was more used in the early days of aviation and has connotations of bravery and adventure. Anyone can fly an aircraft, with or without a certificate. However, at all times the aircraft must be under the operational control of a properly certified and current pilot, who is responsible for the safe and legal completion of the flight. The first certificate was delivered by the Aero Club de France to Louis Blériot in 1908, followed by Glenn Curtiss, Leon Delagrange and Robert Esnault-Pelterie. The absolute authority given to the Pilot in Command is derived from that of a ship’s captain.[citation needed]

In the United Kingdom there were (in 2000) 31,885 private pilots and 16,449 airline and commercial pilots (ATPL and CPL) registered with the UK Civil Aviation Authority (CAA). Among private pilots, only 6% are female (approximately 1800). In the commercial ...
 
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Added By - prashant bharadwaj
Subject - Aeronautics and Astronautics
Document Type - Seminars and Presentations
Video Duration - 00:03:07
 
 
 

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