So the ultrasonic transducer emits basically an ultrasonic beam that focuses inside the phantom.

Why welding and why not computers?

Now that ultrasonic technology is very common in hospitals and ultrasonic vibration can penetrate most parts of human body, it seems to be a natural choice.

On the right hand side, you see an ultrasonic transducer.

Voltage peak in fibers causes changes of current circuit and crystal vibration, so that ultrasonic receiver (which currently is still the source that sends ultrasonic vibration) can detect echo.

To test their device, Maharbiz and Caarmena utilized six 540ns ultrasonic pulse sent per 100ms to drive sensor.

In 1992, 29.6 of pregnant women received ultrasonic examinations before the 21st week of pregnancy, whereas in 2001 their proportion had risen to 86.2 .

The Empresa Mecánica del Niquel was obliged to obtain through intermediaries computerized numerically controlled (CNC) welding and cutting equipment made by United States manufacturer Miller.

Beyond commerce, innumerable other productive activities, such as, mechanical, carpentry, and welding workshops, tool and die, to mention but a few, do also occur in the informal sector.

For instance the courses offered by the National Training Bureau, a body engaged in vocational training, are draughtsman, electrician, auto mechanic, machinist, welding, auto electrician, radio TV mechanic, home appliances repair, industrial electronics, office automation, e commerce, auto CAD, graphic designing.

I hope that Filipino students will go to China to study in a targeted manner, such as learning China s electric welding technology, and coming back to participate in the national Build Build Build program, and the employment opportunities will be very good , Zhao Changjie from the Representative office suggested.

The advantage of the post of a Special Representative of the Secretary General is that this person should have the authority and resources to deliver all aspects of a peace support operation, including welding together the work of the specialist agencies and giving strategic direction to a peacekeeping operation.