Search Results - Hao Xian
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Telescopes Alignment Using the Sharpness Function Method Based on Undersampled Images
Published 2019-01-01Get full textIn astronomy, the images are sometimes undersampled. In the previous research works, image reconstructions have to be employed to recover the lost information from a set of undersampled images to achieve a high-resolution image using dithering or drizzle methods, which increase the complexity of ali...
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Method for Suppressing Scintillation in Up-Link Optical Communication Using Optical Pin-like Beams Propagating Through Atmospheric Turbulence
Published 2025-07-01Get full textFree space optical communication (FSOC) systems operating in the space–atmosphere channel are susceptible to severe turbulence-induced scintillation, particularly in up-link configurations where the adaptive optics (AO) pre-correction becomes ineffective due to anisoplanatic constraints. This study...
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Comparative proteomics analysis of pomegranate seeds on fruit maturation period (Punica granatum L.)
Published 2015-12-01Get full textSeeds play a central role in the life cycle of plants. Seed hardness in pomegranates is of economic relevance, yet scarcely studied and poorly understood in China. In this study, we compared the proteomic differences between Zhongnonghong (soft-seeded) and Sanbai (hard-seeded) pomegranates. A total...
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Lateral bearing characteristics of subsea wellhead assembly in the hydrate trial production engineering
Published 2023-07-01Get full textABSTRACT: Conductor and suction anchor are the key equipment providing bearing capacity in the field of deep-water drilling or offshore engineering, which have the advantages of high operation efficiency and short construction period. In order to drill a horizontal well in the shallow hydrate reserv...
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Design and feasibility analysis of a new completion monitoring technical scheme for natural gas hydrate production tests
Published 2023-07-01Get full textABSTRACT: As a prerequisite and a guarantee for safe and efficient natural gas hydrates (NGHs) exploitation, it is imperative to effectively determine the mechanical properties of NGHs reservoirs and clarify the law of the change in the mechanical properties with the dissociation of NGHs during NGHs...
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Passability test and simulation of sand control string with natural gas hydrates completion in large curvature hole
Published 2023-01-01Get full textTo meet the requirements of marine natural gas hydrate exploitation, it is necessary to improve the penetration of completion sand control string in the large curvature borehole. In this study, large curvature test wells were selected to carry out the running test of sand control string with pre-pac...
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