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Full-Text Articles in Life Sciences
The Demand For Aquacultural Products In Taiwan -- An Inverse Demand System Approach, Fu-Sung Chiang, Jonq-Ying Lee
The Demand For Aquacultural Products In Taiwan -- An Inverse Demand System Approach, Fu-Sung Chiang, Jonq-Ying Lee
Journal of Marine Science and Technology
This study compared two inverse demand systems, the Rotterdam inverse demand system and the Laitinen-Theil inverse demand system, to analyze the demand relationships among aquacultural products in Taiwan. Results demonstrate that the Laitinen-Theil’s inverse demand system fits the data better than the Rotterdam inverse demand system. The demand relationships among five groups of aquacultural products, tilapia, milkfish, other aquaculture fish, shrimp, and shellfish were examined. Monthly transaction prices from local fish markets and per capita consumption for the period from July 1990 through December 1995 for these five groups of aquacultural products were used in this study. Results show that …
Modified Phase Contrast Microscopy And Its Applications To The Observation Of Marine Biological Objects, Ming Chang Shih, Jiang-Shiou Hwang
Modified Phase Contrast Microscopy And Its Applications To The Observation Of Marine Biological Objects, Ming Chang Shih, Jiang-Shiou Hwang
Journal of Marine Science and Technology
We demonstrate the imaging technique for the study of marine micro-biota (e.g. size ranged from um to cm) by modifying the Fourier optics with a near IR illuminating source to improve the contrast of the high spatial frequency images and to reveal the micro-structure of the observed biological object. We also present the application of this system to the study of swimming behavior of the Artemia in free space, and the detailed structure of the spines and podia of the sea urchin. The imaging system is consisted of a collimated laser beam, a high pass Fourier optics transform system, a …