Abstract: A rotatable gas metal arc welding apparatus comprising: a) a rotatable base; b) a rotation brake; c) a primary welding boom arm; d) at least one secondary welding boom arm rotatably attached to the primary welding boom arm, the at least one secondary welding boom arm being rotatable about a swivel joint so as to be rotatable in a generally horizontal plane; e) a MIG welder station; f) at least one manually operated welding gun connector, each welding gun connector being suspended from a secondary welding boom arm; g) a process controller for controlling a welding gun and the rotation brake; h) a rotatable electrical input connection for connecting electrical power from an external electrical power source to the base; i) an electrical ground connection; and j) a welding wire supply station.

Abstract: A rotatable gas metal arc welding apparatus comprising: a) a rotatable base; b) a rotation brake; c) a primary welding boom arm; d) at least one secondary welding boom arm rotatably attached to the primary welding boom arm, the at least one secondary welding boom arm being rotatable about a swivel joint so as to be rotatable in a generally horizontal plane; e) a MIG welder station; f) at least one manually operated welding gun connector, each welding gun connector being suspended from a secondary welding boom arm; g) a process controller for controlling a welding gun and the rotation brake; h) a rotatable electrical input connection for connecting electrical power from an external electrical power source to the base; i) an electrical ground connection; and j) a welding wire supply station.

Abstract: A method of preparing substantially purified alkaloids from seeds, stems, uit-rind and bark of a plant selected from Picralima nitida, Gongronema latifolia, Dorstenia multiradiata, Cola attiensis, Rothmania withfieldii and Desmodium gangeticum, for use in the treatment of protozoal diseases, comprising:pulverizing said plant;a first solvent, drying the extracted material and re-extracting the dried material with a different solvent;extracting a fresh sample of said plant with boiling water;filtering and concentrating the boiling water solvent extracts under reduced pressure;concentrating the dried extract to a gum and re-extracting said gum with an aqueous acidic HCl solution;filtering the acidic extract and making it alkaline to a pH of about 9 with a concentration NaOH solution;extracting the alkaline solution with dichloromethane;concentrating organic layers of the extracted alkaline solution to dryness under reduced pressure to obtain an alkaloid fraction; andseparating the alkaloid fraction by liquid chr