Surface plasmon resonance sensors using molecularly imprinted polymers for sorbent assay of theophylline, caffeine, and xanthine

Article Abstract:

Surface plasmon resonance (SPR) has been used as the basis for a sensor system. SPR uses a photodiode array (PDA) or photothermal deflection spectroscopy (PDS) for detection. The sensor system was intended to use molecularly imprinted polymethacrylic acid-ethylene glycol dimethacrylates (PMAA-EDMA), for the sensing element. Sorbent assay of caffeine, theophylline, and xanthine by surface plasmon resonance sensors with molecularly imprinted (MI) polymers has been carried out. It appears that selectivity of the anti-polymers was limited to their original print molecules; they lacked affinity for the other drug molecules.

Research, Methods, Analysis, Caffeine, Chemical detectors, Plasmons (Physics), Xanthine, Theophylline

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Status of U.S. Tax Treaties

Article Abstract:

Lists of the income tax treaties and estate and gift tax treaties which are currently in effect are highlighted. A list of pending tax treaties is also featured. The treaty with Cyprus has been signed for three years, but anti-abuse regulations have held up its ratification. Several tax treaties with less developed countries in the Caribbean and Africa have been terminated.

Laws, regulations and rules, International aspects, Social status, Gift tax

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GSX-R1186: into the nines on a Gatlin gun

Article Abstract:

Motorcycle drag racer Jesse Gatlin rebuilt the engine of a Suzuki GSX-R1100 to create a high-performance motorcycle. Details of the engine assembly and other components are provided. The test drive is described.

Equipment and supplies, Motorcycles, Drag racing

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