The "poker chip" method, created by TxDOT and the University of Austin, has been adopted by AASHTO as a new national binder testing standard.

This is repository contains Autocad DXF layout and LTSpice schematics for a 5W class A guitar amplifier based on a 12AX7 preamplifier tube and EL84 power tube. The DXF layout in the Spice folder can ...

Abstract: The design and cold test verification for a 220-GHz sheet beam traveling-wave tube (SB-TWT) are presented in this article. Although there are numerous studies regarding the design and ...

Zheng Mengzhu (in bed), the first test-tube baby on the Chinese mainland in 1988, rests with her family after giving birth to her own baby on Monday in Beijing.Zou Hong / China Daily The first ...

A model of the transportation system involving a high-speed maglev train running in a low vacuum pipeline. [File photo/The Third Research Institute of China Aerospace Science and Industry Corp] ...

We are at a critical time and supporting climate journalism is more important than ever. Science News and our parent organization, the Society for Science, need your help to strengthen environmental ...

The rapid identification of Candida species isolates in clinical laboratories is relevant insofar as the high incidence of candidiasis increases proportionally to the growth in the number of patients ...

If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be ...

Tubal ligation is surgical procedure to prevent pregnancy. It has commonly been called "getting your tubes tied." It is also called a female sterilization. Tubal refers to the fallopian tubes. Each ...