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Toxic equivalency factor (TEF) expresses the toxicity of dioxins, furans and PCBs in terms of the most toxic form of dioxin, 2,3,7,8-TCDD. [1] The toxicity of the individual congeners may vary by orders of magnitude. With the TEFs, the toxicity of a mixture of dioxins and dioxin-like compounds can be expressed in a single number – the toxic ...
Postcoital bleeding (PCB) is non- menstrual vaginal bleeding that occurs during or after sexual intercourse. [1] Though some causes are with associated pain, it is typically painless and frequently associated with intermenstrual bleeding. [2][3] The bleeding can be from the uterus, cervix, vagina and other tissue or organs located near the ...
Printed circuit board of a DVD player. Part of a 1984 Sinclair ZX Spectrum computer board, a printed circuit board, showing the conductive traces, the through-hole paths to the other surface, and some electronic components mounted using through-hole mounting. A printed circuit board (PCB), also called printed wiring board (PWB), is a medium ...
As of the final report on 27 August 2012, there were 33 deaths and 147 total confirmed cases since the beginning of the first recorded case on 31 July 2011. [68] 2011 – contaminated illegal alcohol in West Bengal resulted in an estimated 126 deaths. The alcohol may have contained ammonium nitrate and/or methanol. [69]
Automated optical inspection. Automated optical inspection (AOI) is an automated visual inspection of printed circuit board (PCB) (or LCD, transistor) manufacture where a camera autonomously scans the device under test for both catastrophic failure (e.g. missing component) and quality defects (e.g. fillet size or shape or component skew).
Cheatham is on the York River, in Virginia. Cheatham Annex facility is located outside of Williamsburg in York County, Virginia. The annex is adjacent to the York River, between Queen Creek and King Creek, approximately 15 miles upstream from the Chesapeake Bay.
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Website. www.kicad.org. KiCad (/ ˈkiːˌkæd / KEE-kad[7]) is a free software suite for electronic design automation (EDA). It facilitates the design and simulation of electronic hardware for PCB manufacturing. It features an integrated environment for schematic capture, PCB layout, manufacturing file viewing, ngspice -provided SPICE ...