Described herein are methods for preparing acrylic acid from biobased starting materials, e. The use of update technologies enables precise identification of the updates that affect the defined set of files requiring replacement, and thus minimizes the number of updates that need to be downloaded. , a slip-form paving apparatus, has an arrangement for selectively digging vertical bores in the ground surface at spacings along the predetermined path for planting of vertical posts to be secured by the paving material upon setting thereof. The first mold segment and second mold segment are joined together to form the mold component. FSC LCDs temporally mix the colors in an image by sequentially loading the red, green, and blue pixel data of an image in the panel and flashing the different colors of an RGB backlight.