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Journal of Semiconductors 2015年第12期36卷 24-29页

作者： Jiji Koshy Soosen Samuel.M anoop chandran K.C.George Department of Physics S.B.College

The ac conduction mechanism in copper oxide nanoparticles with 8 nm size, synthesized by a precipitation method was studied by analyzing ac conductivity in the frequency range of 50 Hz-1 MHz and in the temperature range of 373-573 K. X-ray diffraction and transmission electron microscopy （TEM） were employed for the structural and morphological characterization of CuO nanoparticles. The experimental and theoretical in- vestigations suggested that the ac conduction mechanism in CuO nanoparticles can be successfully explained by a correlated barrier hopping model, which provided reasonable values for the maximum barrier height and characteristic relaxation time. It was also found that bipolaron hopping become prominent up to a particular temperature and beyond that single polaron hopping predominates. Physical parameters such as hopping distance and density of defect states were also calculated. Photoluminescence studies confirm the presence of a surface defect in CuO nanoparticles.

关键词： CuO nanoparticles correlated barrier hopping defect states photoluminescence spectrum single polaron hopping

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Whole miRNome-wide Differential Co-expression of MicroRNAs

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Genomics, Proteomics & Bioinformatics 2012年第5期10卷 285-294页

作者： Cord F.Stehler Andreas Keller Petra Leidinger Christina Backes anoop chandran Jerg Wischhusen Benjamin Meder Eckart Meese Siemens Healthcare Strategy Department of Human Genetics Saarland University Interdisciplinary Center for Clinical Research University of Wuerzburg Department of Internal Medicine III Heidelberg University

Co-regulation of genes has been extensively analyzed, however, rather limited knowledge is available on co-regulations within the miRNome. We investigated differential co-expression of microRNAs （miRNAs） based on miRNome profiles of whole blood from 540 individuals. These include patients suffering from different cancer and non-cancer diseases, and unaffected controls. Using hierarchi- cal clustering, we found 9 significant clusters of co-expressed miRNAs containing 2-36 individual miRNAs. Through analyzing multiple sequencing alignments in the clusters, we found that co-expression of miRNAs is associated with both sequence similarity and genomic co-localization. We calculated correlations for all 371,953 pairs of miRNAs for all 540 individuals and identified 184 pairs of miRNAs with high correlation values. Out of these 184 pairs of miRNAs, 16 pairs （8.7%） were differentially co-expressed in unaffected controls, cancer patients and patients with non-cancer diseases. By computing correlated and anti-correlated miRNA pairs, we constructed a net- work with 184 putative co-regulations as edges and 100 miRNAs as nodes. Thereby, we detected specific clusters of miRNAs with high and low correlation values. Our approach represents the most comprehensive co-regulation analysis based on whole miRNome-wide expression profiling. Our findings further decrypt the interactions of miRNAs in normal and human pathological processes.

关键词： Co-expression Microarray MicroRNA Network analysis

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Large Ameloblastoma of Mandible: Our Experience with Intermaxillary Fixation

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International Journal of Otolaryngology and Head & Neck Surgery 2016年第1期5卷 17-22页

作者： anoop Attakkil Vandana Thorawade Rajesh Kar Shobhna chandran Devkumar Rengaraja Karthik Rao Dnyaneshwar Rohe Department of ENT Grant Medical College & Sir J.J. Hospital Mumbai India

Ameloblastomas are benign dental tumors, constituting 15% of oral neoplasms, most frequent odontogenic tumor of the jaw. Patient presenting at a late stage usually presents with large swelling with facial deformity. We present a case of 50 years old male who presented with recurrent ameloblastoma on the left side of the mandible causing facial disfigurement and functional impairment. Adequate removal of the tumor required hemimandibulectomy and intermaxillary fixation was done without any bony reconstruction. We would like to focus on the excellent postoperative result with regard to facial symmetry and functional improvement obtained in this case, though the available management protocols differ and are more advanced in current scenario. This case report gives hope and guidance to the surgeons who face difficulty in managing the deforming benign bony tumors due to the unavailability of facility and funds to reconstruct.

关键词： Ameloblastoma Resection Intermaxillary Fixation Mandible

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