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How to upload video on researchusa.org 

This video shows how to upload videos on researchusa.org.

An step by step instruction sheet is available here. 

While anyone can view and use most of the information contained in the portal, only registered members can upload videos. Registration is free and easy and can be done by filling in a form available here. A registered user can log in to the portal with his login and password and click the UPLOAD button located at the top right hand corner of the portal or click on the 'Upload Video' link just below the search field. An upload form appears where a few fields are mandatory and a few are optional. While most video formats are allowed, sometimes there are codec issues because of which a file, although uploaded, will not be playable. In some of these cases, file size shows as 0KB and runtime shows as 0:00 secs. In such cases, the user has to use some program (one is linked on the upload page of our portal to convert a file into flv and can be found  

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Added By - researchusa
Subject - Softwares and Programming Languages
Document Type - Tutorial
Video Duration - 00:01:46


Walter Lewin Makes a Battery out of Cans and ... 
http://www.FreeScienceLectures.comThe best physics lecturer Walter Lewin makes another wonderful physics demonstration on making a battery out of cans and water.
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Added By - scienceforum
Subject - Physics
Document Type -
Video Duration - 00:06:17


Nanotechnology Takes Off - KQED QUEST 

From Lawrence Berkeley National Labs to Silicon Valley, researchers are manipulating particles at the atomic level, ushering in potential cures for cancer, clothes that don't stain, and solar panels as thick as a sheet of paper. http://www.kqed.org/quest

About KQED :

KQED is a public broadcasting company based in San Francisco, California. On May 1, 2006, KQED, Inc. and the KTEH Foundation merged to form Northern California Public Broadcasting.[1] The KQED assets including its

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Added By - 123456
Subject - Nanoscience and Nanotechnology
Document Type - Documentary
Video Duration - 00:10:28


Post-copulatory sexual selection and sexual c... 
Male pregnancy in seahorses, pipefishes and sea dragons (family Syngnathidae) represents a striking reproductive adaptation that has shaped the evolution of behaviour and morphology in this group of fishes1. In many syngnathid species, males brood their offspring in a specialized pouch, which presumably evolved to facilitate male parental care5, 6. However, an unexplored possibility is that brood pouch evolution was partly shaped by parent–offspring or sexual conflict, processes that would result in trade-offs between current and future pregnancies. Here we report a controlled breeding experiment using the sexually dimorphic Gulf pipefish, Syngnathus scovelli, to test for post-copulatory sexual selection within broods and for trade-offs between successive male pregnancies as functions of female attractiveness. Offspring survivorship within a pregnancy was affected by the size of a male’s mate, the number of eggs transferred and the male’s sexual responsiveness. Significantly, we also found that embryo survivorship in a current pregnancy was negatively related to survivorship in the prior pregnancy, clearly demonstrating fitness trade-offs between broods. Overall, our data indicate that post-copulatory sexual selection and sexual c...
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Added By - autocrawler
Subject - Biology
Document Type - Journal Paper Discussion
Video Duration - moderate


How to Design a Boat Hull in SolidWorks (Free... 
http://www.CADjunky.com This Demonstration exhibits the New Free From Feature in SolidWorks 3D CAD Software. Mark Biasotti, Product Manager at SolidWorks, creates a Boat Hull from a sketch drawing using the SolidWorks Sketch Picture Feature.
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Added By - matlabuser
Subject - Softwares and Programming Languages
Document Type - Demonstration
Video Duration - 00:08:30


Influence of a Streamwise Pressure Gradient o... 

In this video, Kiran Dellimore gives a broad overview of his research paper entitled  'Influence of a Streamwise Pressure Gradient on Film-Cooling Effectiveness' published in the JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER,Vol. 23, No. 1, January-March 2009. His co-authors are Carlos Cruz, Andre W. Marshall, and Christopher P. Cadou all from the University of Maryland, College Park, Maryland 20742.

The paper may be accessed using the following DOI: 10.2514/1.35717

Film cooling is widely used in conventional gas turbine and rocket engines to minimize thermal loading of engine structures and to manage heat transfer between hot, reacting gases and cooler structural components. Previous experimental work has shown that streamwise pressure gradients strongly influence the performance of the film.This paper extends semi-empirical modeling ideas for wall-jet film cooling to include the effects of adverse and favorable pressure gradients. The extended model shows that a pressure gradient’s effect on cooling performance depends on whether the velocity of the film is greater than the core flow (a wall-jet...

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Added By - kdellimo
Subject - Aeronautics and Astronautics
Document Type - Journal Paper Discussion
Video Duration - 00:05:20


Autonomous Vehicle Lab, U. of Maryland 

Robot vehicles modeled after insects. By Joe Conroy and Andrew Hyslop.

The notion that small, even very small, UAVs might have practical uses arose in the early 1990s. In 1992, DARPA conducted a workshop titled "Future Technology-Driven Revolutions In Military Operations". One of the topics in the workshop was "mobile microrobots". The idea of using very small "microdrones" was discussed, and after initial skepticism the idea started to gain momentum.

The RAND Corporation released a paper on the microdrone concept in 1994 that was widely circulated. DARPA conducted a series of "paper studies" and workshops on the concept in 1995 and 1996, leading to early engineering studies by the Lincoln Laboratories at the Massachusetts Institute of Technology (MIT), and the  

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Added By - eternes
Subject - Robotics and Artificial Intelligenc...
Document Type - Vid/Terp 2008 www.umd.edu
Video Duration - 00:02:54


Lamina Flow Stirling Engine 

This amazingly simple engine runs at 700rpm heated only by a small candle.

Thermoacoustic hot air engines (Sonic heat pump and refrigeration or thermoacoustic heat pump and refrigeration) of which nearly all are thermoacoustic stirling engines is a technology that uses high-amplitude sound waves in a pressurized gas to pump heat from one place to another - or uses a heat temperature difference to induce sound, which can be converted to electricity with high efficiency, with a (piezoelectric) loudspeaker.

This type of heat pump or refrigerator has no

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Added By - quantum
Subject - Energy
Document Type - Demonstration
Video Duration - 00:01:00


Marble displacer Stirling Engine 

5 rolling marbles act as the displacer in this engine. The rigid connection between the piston and conrod is what tips the test tube, rolling the marbles.

Model of stirling engine realized by a syringe and a test-tube.

In the family of heat engines, 'Stirling engine' defines a closed-cycle regenerative hot air engine (or other permanent gas) engine, though the term is often used incorrectly to refer generically to a much wider range of hot air engine types. In this context, "closed-cycle" means that the working fluid is permanently contained within the system, whereas "open-cycle" engines such as internal combustion engine and some st...

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Added By - quantum
Subject - Mechanical Engineering
Document Type - Demonstration
Video Duration - 00:00:08


Kettering EE Capstone 
Kettering University Capstone Project

Kettering University (formerly the "General Motors Institute") is a university in Flint, Michigan, offering degrees in engineering, the applied sciences, and management. The campus is located along the scenic Flint River on property that used to be the main manufacturing location for General Motors. It is named after inventor Charles Kettering[1].

The university boasts that the majority of its' seniors are employed or accepted to graduate schools before graduation and that one out of 15 alumni either own their own business or are high-level managers in leading companies (see Notable Alumni). Although the school's undergraduate class is small with approximately 2,400 students[2], it graduates one of the largest mechanical engineering graduating classes in the United States annually and is consistently ranked by US News and World Report as one of the best schools in the country for an undergraduate engineering education without PhD programs.

The history of Kettering University is deeply tied to the development of the American automotive industry. The school was originally founded as The School of Automotive Trades in 1919 by A...
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Added By - 123
Subject - Electrical Engineering
Document Type - Experiments
Video Duration - 00:00:02

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