Abstract: An effective hydrogen sulfide scavenger that produces little corrosion may be prepared by reacting glyoxal with a compound having at least two primary or secondary amine groups. The subject hydrogen sulfide scavengers may be used with both the production of crude oil and natural gas, and the refining of same.

Abstract: An effective hydrogen sulfide scavenger that produces little corrosion may be prepared by reacting glyoxal with a compound having at least two primary or secondary amine groups. The subject hydrogen sulfide scavengers may be used with both the production of crude oil and natural gas, and the refining of same.

Abstract: A device for separating metal components from a colloidal suspension or solution uses a vessel for holding the colloidal suspension or solution. A membrane impermeable to the selected metal components of a colloidal suspension or solution is sealed over a support to form a leaf element. The leaf element includes an outlet for the selected components of the colloidal suspension or solution and is extended into the colloidal suspension or solution. The leaf element is controllably vibrated simultaneously with application of a negative or positive pressure which is used to motivate permeation of the membrane by the liquid of the colloidal suspension or solution to purify it. Metals removed by the method include metals with an atomic number greater than 10 including and/or silicon. The colloidal suspension or solution may optionally contain a metal precipitator such as a dithiocarbamate and/or trithiocarbamate to aid in the separation.

Abstract: A unique database architecture and applications for enabling large amounts of text and graphic images to be displayed on handheld computing devices such as personal digital assistants, smart phones, and other wireless personal computer platforms is disclosed. The unique database architecture and applications provide a user friendly interface for creating and storing text and graphic or image content using a standard personal computer in which the data is converted, compressed, manipulated and stored into the unique database architecture. The converted and compressed data can be loaded onto a handheld computing device to provide a tool for viewing the text and image content in a small portable form. The unique database architecture and applications are particularly useful for providing mobile content such as reference materials, training materials, question and answer information, entertainment content, and other content based resources.