| N/A | R & D Collabortion for CCD Project | 95009 | 2007 | | Principal Investigator (PI) | | |
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| AR120005 | R&D Laboratory for Testing of Chinese Medicine | 2250000 | 2012 | | Principal Investigator (PI) | | |
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| HKU 713208E | Racial Segregation in Colonial Hong Kong: an Empirical Study of the Peak Area | 441673 | 2008 | | Principal Investigator (PI) | | |
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| HKU 306/93E | Radiation dose contributed by radon decay products in Hong Kong | 966000 | 1993 | | Principal Investigator (PI) | | Dr Tso, Marianne Man Yin |
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| CUHK 30/91 | Radiation dose contributed by radon decay products in Hong Kong | 370000 | 1991 | | Principal Investigator (PI) | | Dr Tso, Marianne Man Yin |
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| HKU 700908P | Radiation emission from pulsars | 783200 | 2008 | Co-Investigator | | Dr Hirotani Kouichi | Co-Investigator | | Dr Takata Jumpei | Co-Investigator | | Professor Ruderman Malvin A. |
| Principal Investigator (PI) | | |
|
| 17612718 | Radical Political Identification and Collective Action: A Mixed Methods Study | 617625 | 2018 | Co-Investigator | | | Co-Investigator | | Professor Hong Ying Yi | Co-Investigator | | Dr Louis Winnifred |
| Principal Investigator (PI) | | |
|
| 17318616 | Radical-Mediated Protein Tyrosine Nitration In Vavuo: Experimental and Theoretical Examination | 540824 | 2016 | Co-Investigator | | Dr Laskin Julia | Co-Investigator | | Dr Siu Chi Kit |
| Principal Investigator (PI) | | |
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| HKU 704209P | Radio Interferometric Observations of Post-AGB Stars and Proto-Planetary Nebulae | 620000 | 2009 | Co-Investigator | | Dr Deguchi Shuji | Co-Investigator | | Professor Kwok Sun | Co-Investigator | | Dr Imai Hiroshi |
| Principal Investigator (PI) | | |
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| 17208319 | Radio Resource Management for Machine Learning on the Edge | 462342 | 2019 | Co-Investigator | | Dr Wu Yik Chung |
| Principal Investigator (PI) | | |
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| 12122516 | Radioactive Isotope Physics | 2512000 | 2021 | | Principal Investigator (PI) | | |
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| 2141221 | Radiochemotherapy sensitivity test on throat cancer | 485099 | 2014 | Co-Investigator | | | Co-Investigator | | |
| Principal Investigator (PI) | | |
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| N/A | Radiofrequency catheter ablation of ventricular tachycardias | 0 | 1992 | Co-Investigator | | Dr Lee Kathy Lai Fun | Co-Investigator | | Dr Chan |
| Principal Investigator (PI) | | Dr Tai, Yau Ting |
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| 210207 | Radiofrequency therapy for chronic and cancer pain patient | 389600 | 2010 | | Principal Investigator (PI) | | |
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| N/A | Radiographic appearance of ameloblastomas with regard to pathological classification | 0 | 1994 | Co-Investigator | | Mr Bister | Co-Investigator | | Emeritus Professor Tideman Henk |
| Principal Investigator (PI) | | Dr Ormiston, Ian William |
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| 2002/2/27 | Radioguided surgery and breast cancer management courses and seminars | 249000 | 2002 | Deputy project coordinator | | Dr Kwong Ava |
| Project Coordinator (PC) | | Professor Chow, Louis Wing Cheong |
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| 06172046 | Radiosensitivity index (RSI) as predictive biomarker for radiotherapy de-intensification in nasopharyngeal carcinoma | 1499916 | 2018 | Co-Investigator | | Dr Ng Wai Tong | Co-Investigator | | | Co-Investigator | | Mr Tsang Ka Chun | Co-Investigator | | | Co-Investigator | | | Co-Investigator | | | Co-Investigator | | | Co-Investigator | | | Co-Investigator | | |
| Principal Investigator (PI) | | |
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| N/A | Raft on elastic layered soil | 0 | 1982 | | Principal Investigator (PI) | | |
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| HKU 775008M | RAGE (receptor for advanced glycation end products), Abeta (beta-amyloid peptide) and ET-1 (endothelin-1) probing their effects in glaucoma with transgenic mice over-expressing ET-1 in endothelial or glial cells | 1020047 | 2008 | Co-Investigator | | | Co-Investigator | | |
| Principal Investigator (PI) | | |
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| HKU 748408H | Rail-based Transit-oriented Development: Urban Structure and Geographical Characteristics | 540360 | 2008 | | Principal Investigator (PI) | | |
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