Abstract: Organic materials are stripped and dried in a single column having two contact zones. A stripping gas is introduced into an upper contact zone and flows through the organic material in that zone. A drying gas is introduced into a lower contact zone. The drying gas contacts the organic material in both the upper and lower contact zones, and is removed from the top of the column together with the stripping gas. This process permits very efficiently removal of volatile organic compounds as well as efficient drying, while requiring on low levels of the stripping and drying gasses.

Abstract: Organic materials are stripped and dried in a single column having two contact zones. A stripping gas is introduced into an upper contact zone and flows through the organic material in that zone. A drying gas is introduced into a lower contact zone. The drying gas contacts the organic material in both the upper and lower contact zones, and is removed from the top of the column together with the stripping gas. This process permits very efficiently removal of volatile organic compounds as well as efficient drying, while requiring on low levels of the stripping and drying gasses.

Abstract: Organic materials are stripped and dried in a single column having two contact zones. A stripping gas is introduced into an upper contact zone and flows through the organic material in that zone. A drying gas is introduced into a lower contact zone. The drying gas contacts the organic material in both the upper and lower contact zones, and is removed from the top of the column together with the stripping gas. This process permits very efficiently removal of volatile organic compounds as well as efficient drying, while requiring on low levels of the stripping and drying gasses.

Abstract: A method and system of displaying a pattern using a bitmap memory display which acomplishes an overall pattern display by writing to the display memory one copy of the pattern. The logical unit (LU) of the system's graphics adapter (GA) is then used to replicate the pattern throughout the bitmap memory with a reduced number of write operations from the central processing unit (CPU) to the GA.

Abstract: An improved method and system for updating a display bitmap with a character string in a given font is provided. Each character in the font is stored as a character bitmap. Each character comprises a contiguous set of virtual characters. A visible stack is created for each character string to be displayed in the display bitmap. For each character to be displayed, the visible stack contains a pointer to each of its virtual characters. The data in the visible stack is then processed to update efficiently the display bitmap. The display bitmap is updated column by column, each column being one byte side. For each byte in the column, the virtual characters that are to be displayed in that byte are combined to form an output byte that is output to the display bitmap. The combining is accomplished by special-purpose routines based on the number of virtual characters that are to be displayed in a particular column.

Abstract: Thermostat control of separate heating and cooling apparatus is achieved with a system that requires only a two-conductor connection between the thermostat and the apparatus. A pair of oppositely-poled diodes is employed at each end of one of the conductors of the connection so that when the control system is established, by a selector switch, in the heating mode the half cycles of one polarity of an AC voltage effect the operation of the heating apparatus, whereas when the system is switched to the cooling mode the opposite polarity half cycles cause operation of the cooling apparatus. The invention is especially advantageous when a central air-conditioning system is added to a building where only a two-wire cable connects the thermostat to the existing heating system. Rewiring of the thermostat cable is unnecessary.