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Peter Clarke
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re: Reports: trace carcinogens found in Korean wafer fabs
Peter Clarke   2/7/2012 2:22:19 PM
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I think you are right but you are not meant to detect them in the open enivironment where workers are exposed. I understand that benzene was no longer brought into these sites so that any benzene detected must have been produced in-plant by chemical reaction, but again should not be detectable. The cancer-inducing nature of materials is also a function of the amount of material present. I remember in another life when i had to read a learned paper about a food coloring called "Herring brown B." The paper supposedly showed "Herring brown B" to be a carcinogen. However, the amounts of "Herring brown B" fed/injected into rats were enormous, at some significant fraction of their body weight over some period of time (I am sorry but the details are forgotten). I can't even remember how Herring brown A and Herring brown C compared. But I remember thinking at the time that at that amount of exposure almost anything could show as a carcinogen.

elctrnx_lyf
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re: Reports: trace carcinogens found in Korean wafer fabs
elctrnx_lyf   2/7/2012 12:42:15 PM
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I really feel for sad for the employees who have to work in such conditions. They should be provided with good health insurance.

daleste
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re: Reports: trace carcinogens found in Korean wafer fabs
daleste   2/7/2012 3:06:43 AM
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The chemicals used in fabs are dangerous, especially arsenic. Hydroflouric acid is also very dangerous. The key is to use them without exposing the workers. I guess this study was measuring the concentrations in the air, so the workers are exposed. I wonder how the US fabs measure up.

Patk0317
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re: Reports: trace carcinogens found in Korean wafer fabs
Patk0317   2/6/2012 4:18:15 PM
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This is an interesting study, but I had thought that a lot of the chemicals used in to process wafers were carcinogens.



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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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