The light generating mechanism of a series of light emitting diodes with electron donor-bridge-acceptor systems (D-b-A) as the emitting species was examined by constructing model diodes based on small organic molecules (OLEDs) as well as on molecularly doped electroactive (poly-N-vinylcarbazole, PVK) and insulating (polystyrene, PS) polymers (PLEDs). The direct electrogeneration of an intramolecular charge-transfer (CT) fluorescence of the donor-bridge-acceptor systems occurred readily in OLED devices with a D-b-A system as the emissive layer. In diodes with PS as the host matrix, hole-injection and electron-injection occurred directly in the D-b-A molecules residing close to the anode and the cathode, respectively. In the PVK diodes, hole-injection occurred primarily into PVK and the positive charge carrier was subsequently trapped on the D-b-A molecule, whereas electron-injection at the cathode side occurred directly into the D-b-A molecules. Charge-hopping between neighboring molecules then occurred until a hole and electron resided on the same molecule, which is equivalent to the formation of the CT excited state, and which finally relaxed by intramolecular charge recombination under the emission of CT fluorescence.

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/ In 1991 and 1992, temperature, salinity, and fluorescence were measured by automatic continuous registration using instrumentation on a ferry crossing the southern North Sea daily along a transect between Zeebrugge, Belgium, and Hull, United Kingdom. The temperature ranged between 4 and 21 degrees C off the Belgian coast and between 6 and 17 degrees C in the middle of the transect. Salinity varied between 34 and 35.5 PSU in the offshore part of the transect, but showed much larger variation along the Belgian and UK estuarine coasts. Fluorescence, which was used as a measure of phytoplankton biomass, was highest at the continental coast and lowest near the English coast. Spring blooms of phytoplankton were found along the continental coast and in the channel-influenced water; in 1991 the blooms were denser than in 1992. Some summer blooms were also recorded. Water masses could be distinguished on the basis of salinity and fluorescence patterns. The general patterns in the data are compared with the literature and discussed in relation to river discharge, light penetration, and wind speed and direction. Finally, the value of automatic and frequent measurements of fluorescence for monitoring phytoplankton is compared with less frequent observations at selected stations. It is concluded that accurate information about phytoplankton biomass can only be established from the high-frequency data. KEY WORDS: Monitoring; Sampling; North Sea; Ferry; Fluorescence; Salinity; Temperature

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e16573 Background: To date 80-90% of men with primary prostate cancer are diagnosed with localized disease with a wide range of risks of future tumor progression. To optimize the balance between tumor removal and preserved continence and erectile function, it is essential to integrate all available information on tumor location, tumor characteristics, and baseline clinical data. Methods: We have developed a cloud-web-based technology allowing flexible access to the clinical data with close integration to the existing IT-environment like the hospital information management systems. The system allows the systematic and structured reporting of medical data generated by the involved disciplines of urology, laboratory, radiology, pathology, and (radiation) oncology, and patient reported health status and outcomes. Results: By use of the developed data integration platform we have collected diagnostic data of a prostate cancer case example scheduled for a multi-disciplinary primary treatment decision. The data comprises the patient health conditions, laboratory measures, multi-parametric MRI, localization information of MRI/US fusion guided biopsies, histo-pathology outcomes of prostate biopsy specimen, and patient reported outcomes on urinary and sexual function status. The collected data was presented in a visually integrated way and was used to discuss in a multi-disciplinary team, with the consistencies or discordances of findings across the various medical domains involved. Based on the discussion a primary treatment decision was concluded for this patient. Conclusions: The developed IT system to integrate heterogeneous medical data was successfully tested in a multi-disciplinary clinical setting. All required clinical variables to provide an informed primary treatment decision for a patient with primary localized prostate cancer was available in the system for discussion during the multi-disciplinary team (MDT) meeting and was presented in a clear visual way to support the interactive discussions between MDT members representing different clinical specialties.

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