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81.
Zhang Huadian Shukla Manoj K. Larson Steve Rajendran A. M. Jiang Shan 《Journal of Materials Science》2022,57(12):6688-6705
Journal of Materials Science - This paper presents an investigation aimed at understanding the shock wave propagation response of oriented α-quartz single crystals by using molecular dynamics... 相似文献
82.
Aditya Telang P. Deepak Salil Joshi Prasad Deshpande Ranjana Rajendran 《Data mining and knowledge discovery》2014,28(5-6):1480-1502
The last decade has witnessed an unprecedented growth in availability of data having spatio-temporal characteristics. Given the scale and richness of such data, finding spatio-temporal patterns that demonstrate significantly different behavior from their neighbors could be of interest for various application scenarios such as—weather modeling, analyzing spread of disease outbreaks, monitoring traffic congestions, and so on. In this paper, we propose an automated approach of exploring and discovering such anomalous patterns irrespective of the underlying domain from which the data is recovered. Our approach differs significantly from traditional methods of spatial outlier detection, and employs two phases—(i) discovering homogeneous regions, and (ii) evaluating these regions as anomalies based on their statistical difference from a generalized neighborhood. We evaluate the quality of our approach and distinguish it from existing techniques via an extensive experimental evaluation. 相似文献
83.
Effect of surface modification of anode with surfactant on the performance of microbial fuel cell 下载免费PDF全文
Young‐Chae Song Dae‐Sup Kim Jung‐Hui Woo Bakthavachallam Subha Seong‐Ho Jang Subpiramaniyam Sivakumar 《国际能源研究杂志》2015,39(6):860-868
Surface modification of anode using surfactant has great influence on the electrical performance of a microbial fuel cell (MFC). In this study, the effect of surface‐modified exfoliated graphite used for anode fabrication on a cube‐type MFC batch reactor was examined. The surface exfoliated graphite was modified with 5‐mM anionic surfactant, sodium dodecyl sulfate. Anaerobic sludge used as inoculum containing 70% (v/v) of artificial wastewater and 30% (v/v) of seed sludge in an anode chamber and air cathode was used in cathode side. Anode modification was explored as an approach to enhance the start‐up and improve the performance of the reactor. Scanning electron microscopy was used to evaluate the morphology and activity of electrochemically active bacteria. In the study, the start‐up time of MFC required to approach stable voltage was substantially reduced, and the maximum stable voltage was higher than the control. In addition, the activation resistance of the MFC was considerably reduced, and the maximum power density (1640 mW/m2) was 20% higher than control. However, when the surface of exfoliated graphite was modified with over 10‐mM anionic surfactant, some negative effects on start‐up time, activation resistance and maximum power density were observed. This modification also enhanced the bacterial attachment and biofilm formation on the modified anode surface. The result suggested that surface modification anode with surfactant is effective for electrical responses achieved in the MFC. Copyright © 2015 John Wiley & Sons, Ltd. 相似文献
84.
Dhineshbabu Nattanmai Raman Karunakaran Gopalu Suriyaprabha Rangaraj Manivasakan Palanisamy Rajendran Venkatachalam 《纳微快报(英文)》2014,6(1):46-54
Nano-Micro Letters - Magnesia (MgO) nanoparticles were produced from magnesite ore (MgCO3) using ball mill. The crystalline size, morphology and specific SSA were characterized by X-ray diffraction... 相似文献
85.
J. Wang K. M. Liew M. J. Tan S. Rajendran 《International Journal of Mechanical Sciences》2002,44(7):7324-1293
A meshless approach based on the reproducing kernel particle method is developed for the flexural, free vibration and buckling analysis of laminated composite plates. In this approach, the first-order shear deformation theory (FSDT) is employed and the displacement shape functions are constructed using the reproducing kernel approximation satisfying the consistency conditions. The essential boundary conditions are enforced by a singular kernel method. Numerical examples involving various boundary conditions are solved to demonstrate the validity of the proposed method. Comparison of results with the exact and other known solutions in the literature suggests that the meshless approach yields an effective solution method for laminated composite plates. 相似文献
86.
87.
Samson Jerold Samuel Chelladurai Ramesh Arthanari Nisaanthakumar Nithyanandam Karthikeyan Rajendran Kesavaprasad Kothandapani Radhakrishnan 《Transactions of the Indian Institute of Metals》2018,71(4):813-822
LM6 aluminium alloy with 2.5–10 wt% of copper coated short steel fiber reinforced composites were prepared using squeeze casting process. Microstructure and mechanical properties viz., hardness, tensile strength and ductility were investigated. Dry sliding wear behaviour was tested by considering sliding distance and load. Fracture surface and worn surface were examined using field emission scanning electron microscope (FESEM). Hardness of composites increased with increasing wt% of fiber. Tensile strength of composites increased up to 19% for 5 wt% fiber composites. Further addition of fibers decreased the tensile strength of composites. Ductility of the composites decreased with the addition of fibers into the matrix. Wt% of fibers significantly decreased the weight loss, coefficient of friction and wear rate. Also the cumulative weight loss decreased up to 57% for 10 wt% of composites compared to LM6 aluminium alloy. Fracture surface of composite tensile specimen showed dimple formation and fiber pullout. Worn surface of matrix showed long continuous grooves due to local delamination on the surface. However, worn surface of composites showed fine and smooth grooves due to ploughing rather than local delamination. Copper coated steel fiber reinforcement in LM6 aluminium alloy exhibited better mechanical properties and wear resistance compared to matrix. 相似文献
88.
S. Rajendran B. R. Zhang K. M. Liew 《International journal for numerical methods in engineering》2010,82(12):1574-1608
The recently published ‘FE–Meshfree’ QUAD4 element is extended to geometrical non‐linear analysis. The shape functions for this element are obtained by combining meshfree and finite element shape functions. The concept of partition of unity (PU) is employed for the purpose. The new shape functions inherit their higher order completeness properties from the meshfree shape functions and the mesh‐distortion tolerant compatibility properties from the finite element (FE) shape functions. Updated Lagrangian formulation is adopted for the non‐linear solution. Several numerical example problems are solved and the performance of the element is compared with that of the well‐known Q4, QM6 and Q8 elements. The results show that, for regular meshes, the performance of the element is comparable to that of QM6 and Q8 elements, and superior to that of Q4 element. For distorted meshes, the present element has better mesh‐distortion tolerance than Q4, QM6 and Q8 elements. Copyright © 2009 John Wiley & Sons, Ltd. 相似文献
89.
N. Subha M. Mahalakshmi M. Myilsamy N. Lakshmana Reddy M.V. Shankar B. Neppolian V. Murugesan 《International Journal of Hydrogen Energy》2018,43(8):3905-3919
A novel photocatalyst comprises of ZrO2TiO2 immobilized on reduced graphene oxide (rGO) – a ternary heterojunction (ZrO2TiO2/rGO) was synthesized by using facile chemical method. The nanocomposite was prepared with a strategy to achieve better utilization of excitons for catalytic reactions by channelizing from metal oxide surfaces to rGO support. TEM and XRD analysis results revealed the heterojunction formed between ZrO2 and single crystalline anatase TiO2. The mesoporous structure of ZrO2TiO2 was confirmed using BET analysis. The red shift in absorption edge position of ZrO2TiO2/rGO photocatalyst was characterized by using diffuse reflectance UV–Visible spectra. ZrO2TiO2/rGO showed greater interfacial charge transfer efficiency than ZrO2TiO2, which was evidenced by well suppressed PL intensity and high photocurrent of ZrO2TiO2/rGO. The suitable band gap of 1.0 wt% ZrO2TiO2/rGO facilitated the utilization of solar light in a wide range by responding to the light of energy equal to as well as greater than 2.95 eV by the additional formation of excited high-energy electrons (HEEs). ZrO2TiO2/rGO showed the enhanced H2 production than TiO2/rGO, which revealed the role of ZrO2 for the effective charge separation at the heterojunction and the solar light response. The optimum loading of 1.0 wt% of ZrO2 and rGO on TiO2 showed the highest photocatalytic performance (7773 μmolh?1) for hydrogen (H2) production under direct solar light irradiation. 相似文献
90.
A functional pseudogene,NMRAL2P,is regulated by Nrf2 and serves as a coactivator of NQO1 in sulforaphane‐treated colon cancer cells 下载免费PDF全文