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| 1 | Gastric precancerous lesions are associated with gene variants in Helicobacter pylori -susceptible ethnic Malays显示文摘AIM: To identify genes associated with gastric pre-cancerous lesions in Helicobacter pylori (H. pylori )susceptible ethnic Malays. METHODS: Twenty-three Malay subjects with H. pylori infection and gastric precancerous lesions identified during endoscopy were included as 'cases'. Thirtyseven Malay subjects who were H. pylori negative and had no precancerous lesions were included as 'controls'. Venous blood was collected for genotyping with Affymetrix 50K Xba1 kit. Genotypes with call rates < 90% for autosomal single nucleotide polymorphisms (SNPs) were excluded. For each precancerous lesion, associated SNPs were identified from Manhattan plots, and only SNPs with a χ2 P value < 0.05 and Hardy Weinberg Equilibrium P value > 0.5 was considered as significant markers. RESULTS: Of the 23 H. pylori -positive subjects recruited, one sample was excluded from further analysis due to a low genotyping call rate. Of the 22 H. pylori positive samples, atrophic gastritis only was present in 50.0%, complete intestinal metaplasia was present in 18.25%, both incomplete intestinal metaplasia and dysplasia was present in 22.7%, and dysplasia only was present in 9.1%. SNPs rs9315542 (UFM1 gene), rs6878265 (THBS4 gene), rs1042194 (CYP2C19 gene) and rs10505799 (MGST1 gene) were significantly associated with atrophic gastritis, complete intestinal metaplasia, incomplete metaplasia with foci of dysplasia and dysplasia, respectively. Allele frequencies in 'cases' vs 'controls' for rs9315542, rs6878265, rs1042194 and rs10505799 were 0.4 vs 0.06, 0.6 vs 0.01, 0.6 vs 0.01 and 0.5 vs 0.02, respectively. CONCLUSION: Genetic variants possibly related to gastric precancerous lesions in ethnic Malays susceptible to H. pylori infection were identified for testing in subsequent trials. | Sathiya Maran Yeong Yeh Lee Shuhua Xu Nur-Shafawati Rajab Norhazrini Hasan Syed Hassan Syed Abdul Aziz Noorizan Abdul Majid Bin Alwi Zilfalil | 2013 | World Journal of Gastroenterology2013，19，23： | 5 |
| 2 | Experimental Investigation on Friction Welding of UNS S32205 Duplex Stainless Steel显示文摘UNS S 32205 duplex stainless steel specimens were joined by continuous drive friction welding process. The experiments were conducted as per the Taguchi(L16 orthogonal array) method. The friction welding process parameters such as heating pressure, heating time, upsetting pressure, upsetting time, and speed of rotation were fixed with low,medium, and high levels of range based on the machine capacity, and the required knowledge was acquired from the preliminary experiments. The joint characterization studies included micro structural examination and evaluation of mechanical properties of the joints. Microhardness variation, impact toughness, and tensile strength of the joints were evaluated. Neither a crack nor an incomplete bonding zone was observed. The tensile strength of the joints was higher than the strength of the base material, and the friction and upsetting pressures were found to influence the joint strength. The tensile strength of all the welds was observed to be increasing with an increase in the rotational speed. The toughness of the friction welds was evaluated at room temperature and also at subzero(cryo) temperature conditions. The toughness for friction welds was found to be superior to the fusion welds of duplex stainless steel at room temperature and cryo conditions. Weldments exhibited better corrosion resistance than the parent material. | P. M. Ajith P. Sathiya S. Aravindan | 2014 | Acta Metallurgica Sinica(English Letters)2014，27，6： | 3 |
| 3 | Characterization of microstructure, toughness, and chemical composition of friction-welded joints of UNS S32205 duplex stainless steel显示文摘Friction welding is a solid-state joining process which is applied extensively because of its advantages such as low heat input,efficient application,ease in manufacturing,and environmental friendliness.The present study investigates the mechanical and metallurgical properties of UNS S32205 duplex stainless steel friction-welded joints.The process parameters,namely friction pressure,upsetting pressure,and rotational speed are individually varied from low level to high level(within the range of the machine setup)and their effects on the joint properties are analyzed.The partial-deformation zone had higher hardness than the weld and base metal.The toughness of the joints was evaluated at room temperature and at subzero temperature conditions.The impact toughness of the friction-welded joints was found to be superior to fusion-joined duplex stainless steel in room and cryogenic conditions. | Puthuparambil Madhavan AJITH Paulraj SATHIYA Sivanandam ARAVINDAN | 2014 | Friction2014，2，1： | 2 |
| 4 | Influence of thermomechanical processing on microstructure,mechanical and strain hardening properties of single-phase Mg-4Li-0.5Ca alloy for structural application显示文摘The single-phase Mg-4Li-0.5Ca alloy was rolled at three different temperatures(250,300 and 350℃)and followed by annealing at 200°C for 10 min.To evaluate the mechanical properties,the tensile test was conducted at a constant strain rate of 10^(-3)s^(-1).Factors influencing the tensile strength and strain hardening properties were assessed by microscopy,XRD and EBSD analysis.Besides,Kocks-Mecking plots(K-M)were used to determine the different stages of strain hardening exhibited by the variously processed Mg-4Li-0.5Ca alloy test specimens.The ultimate tensile strength has decreased as hot-rolling temperature in creases with increased ductility.The strain hardening properties such as hardening capacity(Hc),strain hardening exponent(n)are increased significantly with an increase in hot rolling temperature and subsequent annealing. | N.Sriraman S.Kumaran Sathiya Narayanan N | 2020 | Journal of Magnesium and Alloys2020，8，4： | 2 |
| 5 | Optimisation of laser welding parameters for welding of P92 material using Taguchi based grey relational analysis显示文摘Creep strength enhanced ferritic(CSEF) steels are used in advanced power plant systems for high temperature applications. P92(Cr–W–Mo–V)steel, classified under CSEF steels, is a candidate material for piping, tubing, etc., in ultra-super critical and advanced ultra-super critical boiler applications. In the present work, laser welding process has been optimised for P92 material by using Taguchi based grey relational analysis(GRA).Bead on plate(BOP) trials were carried out using a 3.5 k W diffusion cooled slab CO_2 laser by varying laser power, welding speed and focal position. The optimum parameters have been derived by considering the responses such as depth of penetration, weld width and heat affected zone(HAZ) width. Analysis of variance(ANOVA) has been used to analyse the effect of different parameters on the responses. Based on ANOVA, laser power of 3 k W, welding speed of 1 m/min and focal plane at-4 mm have evolved as optimised set of parameters. The responses of the optimised parameters obtained using the GRA have been verified experimentally and found to closely correlate with the predicted value.? 2016 China Ordnance Society. Production and hosting by Elsevier B.V. All rights reserved. | Shanmugarajan B. Rishabh SHRIVASTAVA Sathiya P. Buvanashekaran G. | 2016 | Defence Technology(防务技术)2016，12，4： | 2 |
| 6 | Strain Limit of Extra Galvannealed Interstitial-Free and Bake Hardened Steel Sheets Under Different Stress Conditions显示文摘The formability of bake hardened steel (thickness 0.82 mm), and the extra galvannealed IF steel (thickness 0.82 mm) have been studied. The suitability of the above steels for forming applications has been critically examined. The microstructure, tensile properties, and formability parameters of the above sheet metals were determined. The manufacturing process of the steels and the significance with reference to its formability were studied. | R Narayanasamy N L Parthasarathi R Ravindran C Sathiya Narayanan | 2008 | Journal of Iron and Steel Research(International)2008，15，5： | 2 |
| 7 | Some experimental investiga- tions on friction welded stainless steel joints 显示文摘 | Sathiya P Aravindan S Haq A N | 2008 | Materials and Design2008，29，6： | 1 |
| 8 | Effect of nanoseale CeO2 on P(VDF-HFP)-based nanocomposite porous polymer electrolytes for Li-ion batteries显示文摘 | G Vijayakumar S N Karthick A R Sathiya Priya | 2008 | Journal State Electrochem2008，12，： | 1 |
| 9 | Optimization of laser welding process parameters for super austenitic stainless steel using artificial neural networks and genetic algorithm 显示文摘 | Sathiya P Panneerselvam K | 2012 | Materials and Design2012，36，： | 1 |
| 10 | Optimization of friction welding pa- rameters using evolutionary computational techniques显示文摘 | Sathiya P Aravindan S | 2009 | Jour- nal of Materials Processing Technology2009，209，： | 1 |
| 11 | Evaluation of simple performance measmes for tuning SVM hyperparameters 显示文摘 | DUAN Kai-bo SATHIYA KEERTHI S AUN N P | 2003 | Neurocomputing2003，51，： | 1 |
| 12 | Mechanical and Metallurgical Properties of Friction Welded AISI 304 Austenitic Stainless Steel 显示文摘 | Sathiya P Aravindan S Noorul Haq A | 2005 | Int J Adv Manuf Technol2005，26，56： | 1 |
| 13 | Asymptotic Behaviors of Support Vector Machines with Gaussian Kernel显示文摘 | S Sathiya Keerthi Chih-Jen Lin | 2003 | Neural Computation2003，15，： | 1 |
| 14 | Image retrieval using edge based shape similarity with multiresolution enhanced orthogonal polynomials model 显示文摘 | Krishnamoorthy R Sathiya Devi S | 2013 | Digital Signal Processing2013，23，2： | 1 |
| 15 | A sequential dual method for large scale multi-class linear SVMs显示文摘 | Sathiya Keerthi S Kai-Wei Chang | 2008 | KDD2008，，： | 1 |
| 16 | Rapid synthetic routes to prepare LiNi1/3Co1/3Mn1/2O2 as a high voltage,highcapacity Li-ion battery cathode material显示文摘 | Sathiya M Prakash A S Ramesha K eL al | 2009 | Materials Research Bulletin2009，44，10： | 1 |
| 17 | Optimization of friction welding parameters using evolutionary computational techniques 显示文摘 | SATHIYA P ARAVINDAN S HAQ A N | 2009 | Journal of Materials Processing Technology2009，209，5： | 1 |
| 18 | Shielding gas effect on weld characteristics in arc-augmented laser welding process of super austenitic stainless steel显示文摘 | Sathiya P Mishra M K Soundararajan R | 2013 | Optics and Laser Technology2013，45，： | 1 |
| 19 | Evaluation of simple performance measures for tuning SVM hyperparameters显示文摘 | Kaibo D Sathiya K S Aun N P | 2003 | Neurocompting2003，51，： | 1 |
| 20 | Mechanical and metallurgical properties of friction welded AISI 304 austenitic stainless steel显示文摘 | P. Sathiya S. Aravindan A. Noorul Haq | 2005 | The International Journal of Advanced Manufacturing Technology (-)2005，，5： | 1 |
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