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| 1 | Experimental studies and phase field modeling of microstructure evolution during solidification with electromagnetic stirring显示文摘Thixocasting requires manufacturing of billets with non-dendritic microstructure.Aluminum alloy A356 billets were produced by rheocasting in a mould placed inside a linear electromagnetic stirrer.Subsequent heat treatment was used to produce a transition from rosette to globular microstructure.The current and the duration of stirring were explored as control parameters.Simultaneous induction heating of the billet during stirring was quantified using experimentally determined thermal profiles.The effect of processing parameters on the dendrite fragmentation was discussed.Corresponding computational modeling of the process was performed using phase-field modeling of alloy solidification in order to gain insight into the process of morphological changes of a solid during this process.A non-isothermal alloy solidification model was used for simulations.The morphological evolution under such imposed thermal cycles was simulated and compared with experimentally determined one.Suitable scaling using the thermosolutal diffusion distances was used to overcome computational difficulties in quantitative comparison at system scale.The results were interpreted in the light of existing theories of microstructure refinement and globularisation. | P.GERALD TENNYSON P.KUMAR H.LAKSHMI G.PHANIKUMAR P.DUTTA | 2010 | 中国有色金属学会会刊:英文版2010，20，S3： | 8 |
| 2 | Implementation of a polling protocol for predicting celiac disease in videocapsule analysis显示文摘AIM: To investigate the presence of small intestinal villous atrophy in celiac disease patients from quantitative analysis of videocapsule image sequences.METHODS: Nine celiac patient data with biopsy-proven villous atrophy and seven control patient data lacking villous atrophy were used for analysis. Celiacs had biopsy-proven disease with scores of Marsh Ⅱ-Ⅲ C except in the case of one hemophiliac patient. At four small intestinal levels (duodenal bulb, distal duodenum, jejunum, and ileum), video clips of length 200 frames (100 s) were analyzed. Twenty-four measurements were used for image characterization. These measurements were determined by quantitatively processing the videocapsule images via techniques for texture analysis, motility estimation, volumetric reconstruction using shape-from-shading principles, and image transformation. Each automated measurement method, or automaton, was polled as to whether or not villous atrophy was present in the small intestine, indicating celiac disease. Each automaton's vote was determined based upon an optimized parameter threshold level, with the threshold levels being determined from prior data. A prediction of villous atrophy was made if it received the majority of votes (≥ 13), while no prediction was made for tie votes (12-12). Thus each set of images was classified as being from either a celiac disease patient or from a control patient. RESULTS: Separated by intestinal level, the overall sensitivity of automata polling for predicting villous atrophy and hence celiac disease was 83.9%, while the specificity was 92.9%, and the overall accuracy of automata-based polling was 88.1%. The method of image transformation yielded the highest sensitivity at 93.8%, while the method of texture analysis using subbands had the highest specificity at 76.0%. Similar results of prediction were observed at all four small intestinal locations, but there were more tie votes at location 4 (ileum). Incorrect prediction which reduced sensitivity occurred for two celiac patients with Marsh type Ⅱ pattern, which is characterized by crypt hyperplasia, but normal villous architecture. Pooled from all levels, there was a mean of 14.31 ± 3.28 automaton votes for celiac vs 9.67 ± 3.31 automaton votes for control when celiac patient data was analyzed (P<0.001). Pooled from all levels, there was a mean of 9.71 ± 2.8128 automaton votes for celiac vs 14.32 ± 2.7931 automaton votes for control when control patient data was analyzed (P<0.001). CONCLUSION: Automata-based polling may be useful to indicate presence of mucosal atrophy, indicative of celiac disease, across the entire small bowel, though this must be confirmed in a larger patient set. Since the method is quantitative and automated, it can potentially eliminate observer bias and enable the detectionof subtle abnormality in patients lacking a clear diagnosis. Our paradigm was found to be more efficacious at proximal small intestinal locations, which may suggest a greater presence and severity of villous atrophy at proximal as compared with distal locations. | Edward J Ciaccio Christina A Tennyson Govind Bhagat Suzanne K Lewis Peter H Green | 2013 | World Journal of Gastrointestinal Endoscopy2013，5，7： | 3 |
| 3 | HITEMP, the high-temperature molecular spectroscopic database显示文摘 | L.S. Rothman I.E. Gordon R.J. Barber H. Dothe R.R. Gamache A. Goldman V.I. Perevalov S.A. Tashkun J. Tennyson | 2010 | Journal of Quantitative Spectroscopy and Radiative Transfer2010，，15： | 2 |
| 4 | Conjugated metallopoly- mers for fluorescent turn-on detection of nitric oxide 显示文摘 | Smith RC Tennyson AG Won AC | 2006 | Inorg Chem2006，45，23： | 1 |
| 5 | Negative transfer errors in sequential cognitive skills: Strong but wrong sequence application显示文摘 | Woltz D J Tennyson R D Cocchiarella M J | 2000 | Journal of Experimental Psychology : learning memory and cognition2000，26，： | 1 |
| 6 | Consolidation and efficiency in the US life insurance industry显示文摘 | J.David Cummins Sharon Tennyson Mary A. Weiss | 1999 | Journal of Banking and Finance1999，，2： | 1 |
| 7 | Experimental models of inflammatory bowel disease显示文摘 | Elson CO Sartor RB Tennyson GS | 1995 | Gastroenterology1995，109，4： | 1 |
| 8 | Collaborative computational projects显示文摘 | TENNYSON J HARRISON N M | 1994 | Comput Sci News1994，4，： | 1 |
| 9 | The human dystrophin gene requires 16 hours to be transcribed and is cotranscriptionally spliced显示文摘 | Tennyson CN Klamut HJ Worton RG | 1995 | Nat Genet1995，9，2： | 1 |
| 10 | Quantitative Estimates of Motility from Videocapsule Endoscopy Are Useful to Discern Celiac Patients from Controls显示文摘 | Edward J. Ciaccio Christina A. Tennyson Govind Bhagat Suzanne K. Lewis Peter H. Green | 2012 | Digestive Diseases and Sciences2012，，11： | 1 |
| 11 | Use of shape-from-shading to estimate three-dimensional architecture in the small intestinal lumen of celiac and control patients显示文摘 | Edward J. Ciaccio Christina A. Tennyson Govind Bhagat Suzanne K. Lewis Peter H.R. Green | 2013 | Computer Methods and Programs in Biomedicine2013，，3： | 1 |
| 12 | Rapid prototyping technology for surgeries of the pediatric spine and pelvis:benefits analysis显示文摘 | Guarino J Tennyson S McCain G | 2007 | Pediatric Orthopaedic2007，27，8： | 1 |
| 13 | Stability of circular cylindrical shells under transient axial impulsive loading显示文摘 | Zimicik D G Tennyson R C | 1980 | AIAA Journal1980，18，6： | 1 |
| 14 | Advances in small bowel ima- ging显示文摘 | Tennyson CA Semrad CE | 2011 | Curr Gastroenterol Rep2011，13，5： | 1 |
| 15 | Consolidation and efficiency in the US life insurance industry显示文摘 | Cummins D J S Tennyson MA Weiss | 1999 | Journal of Banking and Finance1999，23，： | 1 |
| 16 | Polymer-bound dirhodium tetracarboxylate films for fluorescent detection of nitric oxide 显示文摘 | Smith RC Tennyson AG Lippard SJ | 2006 | Inorg Chem2006，45，16： | 1 |
| 17 | Highly excited rovibrational states using a discrete variable representation:The H3 + molecular ion显示文摘 | Tennyson J Henderson J R | 1989 | Journal of Chemical Physics1989，91，7： | 1 |
| 18 | A study of student satisfaction in a blended e-learning system environment显示文摘 | Wu J H Tennyson R D Hsia T L | 2010 | Computers & Education2010，55，1： | 1 |
| 19 | The HITRAN 2008 molecular spectroscopic database 显示文摘 | Rothman L S Gordon I E Barbe A ChrisBenner D Bernath P F Birk M Boudon V Brown L R Campargue A Champi-on J P Chance K Coudert L H Dana V Devi V M Fally S Flaud J M Gamache R R Goldman A Jacquemart D Klein er I Lacome N Lafferty W J Mandin J Y Massie S T Mikhailenko S N Miller C E Moazzen A N Naumenko 0 VNikitin A V Orphal J Perevalov V I Perrin A Predoi C A Rinsland C P Rotger M ime kovd M Smith M A H Sung K Tashkun S A Tennyson J Toth R A Vandaele A C Vander A J | 2009 | Journal of Quantitative Spectroscopy Radiative Transfer2009，110，： | 1 |
| 20 | Dynamic viscoelastic response of bone显示文摘 | R. C. Tennyson R. Ewert V. Niranjan | 1972 | Experimental Mechanics1972，，11： | 1 |
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