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Areas that should not be soldered may be covered with solder resist (solder mask). One of the most common solder resists used today is called "LPI" (liquid photoimageable solder mask). A photo-sensitive coating is applied to the surface of the PWB, then exposed to light through the solder mask image film, and finally developed where the unexposed areas are washed away. Dry film solder mask is similar to the dry film used to image the PWB for plating or etching. After being laminated to the PWB surface it is imaged and develop as LPI. Once common but no longer commonly used because of its low accuracy and resolution is to screen print epoxy ink. Solder resist also provides protection from the environment.

What solder resist is so inaccurate that few choose it anymore?
Answer: screen print epoxy ink
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The area between Belvidere Street, Interstate 195, Interstate 95, and the river, which includes Virginia Commonwealth University, is socioeconomically and architecturally diverse. North of Broad Street, the Carver and Newtowne West neighborhoods are demographically similar to neighboring Jackson Ward, with Carver experiencing some gentrification due to its proximity to VCU. The affluent area between the Boulevard, Main Street, Broad Street, and VCU, known as the Fan, is home to Monument Avenue, an outstanding collection of Victorian architecture, and many students. West of the Boulevard is the Museum District, the location of the Virginia Historical Society and the Virginia Museum of Fine Arts. South of the Downtown Expressway are Byrd Park, Maymont, Hollywood Cemetery, the predominantly black working class Randolph neighborhood, and white working class Oregon Hill. Cary Street between Interstate 195 and the Boulevard is a popular commercial area called Carytown.

What Richmond street contains a notable amount of Victorian buildings?
Answer: Monument Avenue
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As white settlers began populating Montana from the 1850s through the 1870s, disputes with Native Americans ensued, primarily over land ownership and control. In 1855, Washington Territorial Governor Isaac Stevens negotiated the Hellgate treaty between the United States Government and the Salish, Pend d'Oreille, and the Kootenai people of western Montana, which established boundaries for the tribal nations. The treaty was ratified in 1859. While the treaty established what later became the Flathead Indian Reservation, trouble with interpreters and confusion over the terms of the treaty led whites to believe that the Bitterroot Valley was opened to settlement, but the tribal nations disputed those provisions. The Salish remained in the Bitterroot Valley until 1891.

What year was the Hellgate treaty formed?
Answer:
1855