Printing methods final print

Final Report of a Board of Investigation - The Design and Methods of Construction of Welded Steel Merchant Vessels, Government Printing Office, Washington, DC, USA, 1947. 

If the mixture has gelled, the program proceeds to calculate P(Fa° ) and P(Fg° ) using a binary search method (lines 2510-2770). This method is more convenient that the earlier approach of Bauer and Budde (10) who used Newton s method, since derivatives of the functions are not required. The program also calculates the probability generating functions used to calculate sol fractions and the two crosslink densities (lines 2800-3150). Finally, the sol fraction and crosslink densities are calculated and printed out (lines 3160-3340). The program then asks for a new percents of reaction for the A and B groups. To quit enter a percent reaction for A of >100. 

Microelectrodes were discussed briefly, including the methods of cleaning, and a procedure for making a simple microelectrode systems. Finally, electrodes prepared by screen-printing were mentioned. 

Finally, pins should be cleaned and inspected to ensure they are free of any obstructions of fhe bps prior to use. Manufacturers have specific recommendations on best methods of cleaning their pins. Some vendors such as TeleChem International (www.arrayit.com) offer cleaning solutions and equipment (sonic baths, holders, etc.) for their pins and print heads. In our laboratory, we routinely inspect pins under a microscope before and after cleaning and keep photographic images as records. 

The simplest way to deal with the problem of sensor lifetime is to circumvent it completely by using each sensor once. This requires the production of inexpensive, disposable sensor strips for a variety of anions, possibly by a method such as screen printing. An alternative method may be to further develop photoprocessable polymers, which can then be assembled into the final sensor by a process such as photolithography. 

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