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| 1 | Antimutagenic potential of curcumin on chromosomal aberrations in Allium cepa显示文摘Turmeric has long been used as a spice and food colouring agent in Asia. In the present investigation, the antimutagenic potential of curcumin was evaluated in Allium cepa root meristem cells. So far there is no report on the biological properties of curcumin in plant test systems. The root tip cells were treated with sodium azide at 200 and 300 μg/ml for 3 h and curcumin was given at 5, 10 and 20 μg/ml for 16 h, prior to sodium azide treatment. The tips were squashed after colchicine treatment and the cells were analyzed for chromosome aberration and mitotic index. Curcumin induces chromosomal aberration in Allium cepa root tip cells in an insignificant manner, when compared with untreated control. Sodium azide alone induces chromosomal aberrations significantly with increasing concentrations. The total number of aberrations was significantly reduced in root tip cells pretreated with curcumin. The study reveals that curcumin has antimutagenic potential against sodium azide induced chromosomal aberrations in Allium cepa root meristem cells. In addition, it showed mild cytotoxicity by reducing the percentage of mitotic index in all curcumin treated groups, but the mechanism of action remains unknown. The antimutagenic potential of curcumin is effective at 5 μg/ml in Allium cepa root meristem cells. | RAGUNATHAN Irulappan PANNEERSELVAM Natarajan | 2007 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2007，8，7： | 3 |
| 2 | Improving Performance of a Distributed File System Using a Speculative Semantics-Based Algorithm显示文摘File-sharing semantics is used by the file systems for sharing data among concurrent client processes in a consistent manner. Session semantics is a widely used file-sharing semantics in Distributed File Systems(DFSs). The main disadvantage of session semantics is that writes to an open file are visible to the concurrent client processes only during their next session. Recently, 'linearizability semantics' was introduced in Blob Seer DFS, in which a Read Client Process(RCP) can read only a previous version of a binary large object(blob), while update operations are carried out on that blob in a concurrent manner. In this paper, we propose a new type of file-sharing semantics, namely 'speculative semantics', which permits writes to an open file to be visible to other concurrent processes provided that data consistency is not affected. In addition, we propose a new read algorithm for DFSs based on speculative semantics and a new performance measurement metric called Currency. The experimental results obtained using Blob Seer DFS indicate that the proposed read algorithm performs better than the existing read algorithm of Blob Seer DFS. | Talluri Lakshmi Siva Rama Krishna Thirumalaisamy Ragunathan Sudheer Kumar Battula | 2015 | Tsinghua Science and Technology2015，20，6： | 2 |
| 3 | Creating a national service for the diagnosis of meningococcal disease by polymerase chain reaction显示文摘 | Kaczmarski EB Ragunathan PL Marsh J | 1998 | Communicable Dis Public Health1998，1，： | 1 |
| 4 | Price Variability, Trading Volume and Market Depth: Evidence from the Australian Futures Market显示文摘 | Peker A | 1997 | Applied Financial Economics1997，7，： | 1 |
| 5 | Price variability, trading volume and market depth: Evidence from the Australian futures market显示文摘 | Ragunathan V Peker A | 1997 | Applied Financial Economics1997，7，： | 1 |
| 6 | Price Volatility,Trading Volume and Market Depth:Evidence from the Australia Futures Markets显示文摘 | Peker A | 1997 | Applied Financial Economies1997，7，： | 1 |
| 7 | Congenitaladrenal hyperplasia and hypokalaemic paralysis显示文摘 | Sabapathippillai S Seneviratne K Ragunathan MK | | 0，，04： | 1 |
| 8 | Phosphatase activity of the male crab Uca (Celuca) lactea annulipes with respect to seasons显示文摘 | Jadhav S Ragunathan M G Deecaraman M | 1997 | J Ecotoxicol Environ Monitoring1997，7，4： | 1 |
| 9 | Australian Industry Beta Risk,the Choice of Market Index and Business Cycles显示文摘 | Ragunathan VR.Faff R.Brooks | | 0，，01： | 1 |
| 10 | The Determinants of Credit Ratings: Australian Evidence显示文摘 | Stephen Gray Alexsander Mirkovic Vanitha Ragunathan | 2005 | The Australian Research Council2005，，： | 1 |
| 11 | Price variability, trading volume and market depth: Evidence from the Australian futures market 显示文摘 | Ragunathan V Peker A | 1997 | Applied Financial Economics1997，7，5： | 1 |
| 12 | Designing forEvolvability: Building Blocks for Evolvable Real-Time Systems显示文摘 | Rajkumar Ragunathan Sha Lui | 1996 | Proceedings of the IEEE Real-Time Technology and Applications Symposium1996，1996，： | 1 |
| 13 | Does ISO9000 have an effect on quality management practices? An international empirical study显示文摘 | Rao SS Ragunathan TS Solis LE | 1997 | Total Quality Management1997，8，6： | 1 |
| 14 | Dynamic analysis of hydrodynamic gear pump performance using designof experimentsand operational parameters显示文摘 | Ragunathan C Manoharan C | | 0，，06： | 1 |
| 15 | The interaction of PKN3 with RhoC promotes malignant growth显示文摘 | Unsal-Kacmaz K Ragunathan S Rosfjord E | 2012 | Mol Oncol2012，6，3： | 1 |
| 16 | Cadmium alters the biotransformation of carcinogenic aromatic amines by arylamine Nacetyltransferase xenobiotic-metabolizing enzymes:molecular,cellular,and in vivo studies显示文摘 | RAGUNATHAN N DAIROU J | 2010 | Environ Health Perspect2010，18，12： | 1 |
| 17 | Optimization of exposure parameters in full field digital Mammography显示文摘 | Williams MB Ragunathan P More MJ | 2008 | Med Phys2008，35，6： | 1 |
| 18 | Changes in the neurosecretory cells of the brain and thoracic ganglion of male crab,Uca (celuca) lactea annulipes with respect to seasons显示文摘 | Jadhav S Ragunathan MG Deecaraman M | 2001 | J Environ Biol2001，22，4： | 1 |
| 19 | Predictors for the Outcome of Small-incision Lenticule Extrac- tion for Myopia 显示文摘 | Hjortdal Jcp Vestergaard AH Ivarsen A Ragunathan S Asp S | 2012 | JRefract Surg2012，28，12： | 1 |
| 20 | A path analytic study of the effect of top management support for information systems performance显示文摘 | RAGU-NATHAN B S APIGIAN C H RAGUNATHAN T S | 2004 | The International Journal of Management Science2004，32，6： | 1 |
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