Publications by authors named "Ching-Fang Chen"

Article Synopsis
  • - The Taiwan Axion Search Experiment with a Haloscope focused on detecting axions by utilizing a microwave cavity in the frequency range of 4.70750 to 4.79815 GHz.
  • - The experiment did not find any significant axion signals, with the highest significance being 3.355, but it was able to exclude certain theoretical models of axion interactions.
  • - This study achieved unprecedented sensitivity, improving constraints on axion-two-photon coupling in the mass range of 19.4687 to 19.7639 μeV, surpassing previous nonhaloscope experiments by three orders of magnitude.
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We report on a holoscope axion search experiment near 19.6 µeV from the Taiwan Axion Search Experiment with Haloscope collaboration. This experiment is carried out via a frequency-tunable cavity detector with a volume V = 0.

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A long-term groundwater quality survey in northeastern Taiwan's Lanyang Plain has revealed obvious contamination of the groundwater in some areas, with measured As concentrations in excess of the acceptable level of 10μg/L. Efforts for assessing the health risk associated with the intake of As through the drinking of contaminated groundwater are a necessary part of the important work of health risk management. However, the standard approach to assessing risks to human health does not adequately account for spatial heterogeneity in the measured As concentrations.

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Chronic arsenic (As) exposure continues to be a public health problem of major concern worldwide, affecting hundreds of millions of people. A long-term groundwater quality survey has revealed that 20% of the groundwater in southern Taiwan's Pingtung Plain is clearly contaminated with a measured As concentration in excess of the maximum level of 10 µg/L recommended by the World Health Organization. The situation is further complicated by the fact that more than half of the inhabitants in this area continue to use groundwater for drinking.

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Groundwater is widely used for drinking, irrigation, and aquaculture in the Pingtung Plain, Southwestern Taiwan. The overexploitation and poor quality of groundwater in some areas of the Pingtung Plain pose great challenges for the safe use and sustainable management of groundwater resources. Thus, establishing an effective management plan for multi-purpose groundwater utilization in the Pingtung Plain is imperative.

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