Abstract Background and purpose:The main objectives of this research were to evaluating the application of electrocoagulation process for 198 dye from the aqueous phase and determining the optimum operating conditions to the dye removal using aluminum and iron electrodes. Materials and Methods:The present study was conducted in bench-scale. The spectrophotometer DR 5000 was used to determine th...

Introduction: Since some dyes and their metabolites have toxicity and carcinogenicity potential, and are dangerous to the health of different living creatures, discharge of untreated wastewaters containing large concentrations of dye compounds into water resources is one of the important environmental problems. Therefore, in this research, the efficiency of chemical coagulation process was inve...

Tunable pores (TPs) have been used for resistive pulse sensing of 1 μm superparamagnetic beads, both dispersed and within a magnetic field. Upon application of this field, magnetic supraparticle structures (SPSs) were observed. Onset of aggregation was most effectively indicated by an increase in the mean event magnitude, with data collected using an automated thresholding method. Simulations e...

We show for the first time, to our knowledge, that the buildup time to steady-state femtosecond pulses in a typical colliding-pulse mode-locked dye laser (lambda = 620 nm) with compensating prisms is 15 microsec after the pulses have been completely modulated. For a similar laser without the compensating prisms, the buildup time is 40 microsec and exhibits interesting oscillatory behavior in th...

Antonio J. R. Madureira, 1,2 Peter Jung, 3 and Peter Hänggi 1 Institut für Physik, Universität Augsburg, Memmingerstrasse 6, D-86135 Augsburg, Germany Departamento de Matemática Aplicada, Universidade Estadual de Campinas, Caixa Postal 6065, 13081-970 Campinas, Brazil Department of Physics and Center of Complex Systems Research, Beckman Institute, University of Illinois at Urbana–Champaign, Urb...

Three-dimensional mapping of atmospheric atomic mercury has been performed with lidar techniques, to our knowledge, for the first time. Industrial pollution monitoring, as well as measurements of background concentrations, is reported. High-efficiency frequency doubling of narrowband pulsed dye laser radiation was employed to generate intense radiation at the mercury UV resonance line. Field me...

The duration of pulses generated from a simple colliding-pulse mode-locked cw dye laser is measured as a function of cavity-mirror dispersion. The optimum amount of mirror dispersion of ø (omega) congruent with + 1.8 x 10(-28) sec(2) and a suitable mirror coating for upchirp compensation are identified. The adjustment of mirror dispersion only, without additional dispersive elements, generates ...

iii CHAPTER 1: LITERATURE REVIEW AND THESIS OUTLINE 1 CHAPTER 2: SURVEY OF GRAIN AMARANTH PRODUCTION AND SOIL PROPERTIES IN KAMULI DISTRICT OF UGANDA 48 CHAPTER 3: ORGANIC GRAIN AMARANTH ON-STATION EXPERIMENTS IN UGANDA 76 CHAPTER 4: ORGANIC GRAIN AMARANTH ON-FARM EXPERIMENTS IN UGANDA 139 CHAPTER 5: CONCLUSIONS AND RECOMMENDATIONS 176 APPENDIX I: AMARANTH SURVEY 187 ACKNOWLEDGEMENTS 189

The introduction of a glass prism in a ring dye laser is shown to provide simultaneous wavelength selection and pulse compression.