Yugan Chen

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Root is an important organ for Plant to uptake nutrient and water from the surrounding soil. And the capability of plant to obtain nutrient and water is closely relevant to its root distribution and architecture under ground. Quantitative measurement and analysis of plant root architecture parameters are very important for understanding and study growth of(More)
INTRODUCTION The clinical need for needle-based therapies capable of accessing tissues unreachable by conventional needles has motivated substantial research into steerable needles (see [1] and [2] for a review of these technologies). In particular, it has been observed that curved paths can be useful in percutaneous procedures [3]. Gilbert, et al., showed(More)
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