Other

The Texas A&M University System

Sigma-aldrich Co. LLC

Kevin & Maxwell Ray

Kevin Bernard Ray

Melvin Andrew Park

Emile A Schweikert

Enio Frota Da Silveira

Maxwell Ray

Fuqiang Chen

Carol A Kreader

David Eric Cutter

Jeffrey L Turner

Pegah Jalili

Nicolas Caffarelli

William D James

Yue Lu

Methods and kits for detecting and/or quantitating target proteins in biological samples. In particular, the method comprises capture and immobilization of the target protein, protein denaturation, proteolytic digestion, and analysis using a mass spectrometry-based technique.

Quantitative analysis of proteins

Monitor-mountable computing device

Remote control for on-line gaming

The present invention provides methods for the reduction of endotoxins in a plasmid preparation using a carbohydrate non-ionic detergent with silica chromatography.

Process for the reduction of endotoxins in a plasmid preparation using a carbohydrate non-ionic detergent with silica chromatography

A mass spectrometer 20 includes an electron multiplier 30 for producing an electron avalanche 58 directed toward an ionization region 38. A sample 40 enters the ionization region 38 through a sample inlet 68. In the ionization region 38 the electron avalanche 58 collides with the sample 40 and produces ions 60. A start detector 56 detects the electron avalanche 58 and provides a start signal. The ions 60 exit the ionization region 38 and enter a flight region 26. The ions 60 flow through the flight region 26 and interact with a stop detector 42. The stop detector 42 generates a stop signal in response to being activated. A low pressure enclosure 22 encloses at least the electron multiplier 30 and the ionization region 38. The start and stop signals are supplied to an analysis system for determining the mass of the sample using time-of-flight mass spectrometry.

Ion source for compact mass spectrometer and method of mass analyzing a

A portable x-ray tube 68 for producing x-rays, the tube 68 having an energy source 74 which directs energetic particles or photons at an electron multiplier 80 coupled to the energy source 74. A voltage source 84 applies a multiplier voltage across the electron multiplier 80. When triggered by the energy source 74, the electron multiplier 80 creates a multitude of electrons 28 directed towards a target anode 90 that receives the electrons and produces x-rays 30. The target anode 90 is coupled at a voltage difference of at least 3 kV relative to the electron multiplier 80 so as to define an electron acceleration region 32 between the electron multiplier 80 and the target anode 90. The target anode 90 contains an element having an atomic number greater than 11. A low pressure enclosure 70 contains the electron multiplier 80 and the target anode 90. The low pressure enclosure 70 includes a window 92 for allowing the x-rays 30 to pass through substantially unchanged.

Method and apparatus for producing x-rays

Growing community of inventors

Ballwin, MO, United States of America

Kevin Bernard Ray