Abstract: A slotted shirt for daily use that includes; a single right or left-hand, short or long sleeve; an inside privacy liner; and a slot hemmed into the front panel, wherein the slot allows for the insertion of a user's hand and wrist daily activities. The slotted shirt according to the present invention may further include a logo on the front panel breast pocket. The front panel may include a V-neck or polo shirt design in alternative embodiments of the present invention.

Abstract: A thermal modulator device for gas chromatography and associated methods. The thermal modulator device includes a recirculating fluid cooling member, an electrically conductive capillary in direct thermal contact with the cooling member, and a power supply electrically coupled to the capillary and operable for controlled resistive heating of the capillary. The capillary can include more than one separate thermally modulated sections.

Abstract: A thermal modulator device for gas chromatography and associated methods. The thermal modulator device includes a cooling member, an electrically conductive capillary in direct thermal contact with the cooling member, and a power supply electrically coupled to the capillary and operable for controlled resistive heating of the capillary.

Abstract: A high-sensitivity, separation microcolumn assembly for a microgas chromatograph and the like is provided. The assembly has an ultra-low mass complete with integrated heaters. The assembly uses multiple zones for temperature control, and microstructures that permit very rapid heating and cooling of the microcolumn.

Abstract: A high-performance separation microcolumn assembly and method for making such an assembly are provided. The assembly includes high-performance Si-glass &mgr;GC separation columns having integrated heaters and temperatures sensors for temperature programming and integrated pressure sensors for flow control. These columns, integrated on a die, are fabricated using a silicon-on-glass dissolved-wafer-process. The TCR of the temperature sensors and the sensitivity of the pressure sensors satisfy the requirements needed to achieve reproducible separations in a &mgr;GC system. Using these columns, highly-resolved multiple-component separations were obtained with analysis times a factor of two faster than isothermal responses.

Abstract: A high-sensitivity, separation microcolumn assembly for a microgas chromatograph and the like is provided. The assembly has an ultra-low mass complete with integrated heaters. The assembly uses multiple zones for temperature control, and microstructures that permit very rapid heating and cooling of the microcolumn.

Abstract: Gas chromatography apparatus and procedures are described which enables gas chromatography to be carried out more rapidly than in accordance with prior art techniques and further enables chromatogram peaks caused by materials of interest from being obscured due to their super imposition upon high peak long durations produced by another component of peaks in an organic mixture. Reductions in chromatography evaluation time are achieved through employing a vacuum pump which caused backflushing of a very short column after materials of interest have been eluted but before higher boiling points components of the mixture have eluted. Backflushing is carried out using a vacuum pressure source which when used with a short column, permits rapid and complete backflushing. The chromatography system according to this invention allows simultaneous column backflushing while a new sample is being collected in a cooling chamber for cryofocussing for a subsequent injection.