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An Efficient On-Demand Virtual Machine Migration in cloud Using common Deployment Model

computer Systems Science & Engineering 2022年第7期42卷 245-256页

作者： c.saravanakumar R.Priscilla B.Prabha A.Kavitha M.Prakash c.Arun Department of Information Technology St.Joseph’s Institute of TechnologyChennai600119India Department of Information Technology Loyola-ICAM College of Engineering and TechnologyChennai600034India Department of Electronics and communication Engineering M.Kumarasamy College of EngineeringKarur639113India Data Science and Analytics center Karpagam College of EngineeringCoimbatore641032India Department of Electronics and communication Engineering R.M.K College of Engineering and TechnologyChennai601206India

cloud computing provides various services to the customer in aﬂex-ible and reliable *** Machines(VM)are created from physical resources of the data center for handling huge number of requests as a *** tasks are executed in the VM at the data center which needs excess hosts for satis-fying the customer *** VM migration solves this problem by migrating the VM from one host to another host and makes the resources available at any *** process is carried out based on various algorithms which follow a pre-deﬁned capacity of source VM leads to the capacity issue at the destination *** proposed VM migration technique performs the migration process based on the request of the requesting host *** technique can perform in three ways namely single VM migration,Multiple VM migration and cluster VM *** Deployment Manager(cDM)is used to support through negotiation that happens across the source host and destination host for providing the high quality service to their *** VM migration requests are handled with an exposure of the source host *** proposed analysis also uses the retired instructions with execution by the hypervisor to achieve high *** objective of the proposed technique is to perform a VM migration process based on the prior knowledge of the resource availability in the target VM.

关键词： cloud computing virtualization hypervisor VMmigration virtual machine

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Impact of mangrove vegetation on seasonal carbon burial and other sediment characteristics in the Vellar-coleroon estuary, India

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Journal of Forestry Research 2014年第4期25卷 787-794页

作者： Kandasamy Kathiresan Venugopal Gomathi Raj Anburaj Kandasamy saravanakumar centre of Advanced Study in Marine Biology Faculty of Marine Sciences Annamalai University Parangipettai 608 502 India

This work quantified the total carbon and 12 other sediment characteristics at 10 soil depths, in planted and or natural mangrove forests in comparison with non-vegetated soil for four seasons of the year 2009-2010 in the Vellar-coleroon estuarine complex, India. The sedi- ment characteristics varied significantly between mangrove-vegetated and non-vegetated habitats or seasons of analysis, but not between soil depths. The mangrove sediments were rich in total carbon and total or- ganic carbon as compared to non-mangrove sediments （p 〈0.01）. Total carbon was 98.2% higher in mature mangroves and 41.8% in planted mangroves than that in non-mangrove soil. Total organic carbon was as much as 2.5 times greater in mature mangroves and 2 times greater in planted mangroves than that in unvegetated soil. carbon contents also varied many fold by season. Total carbon content was 8.6 times greater during pre-monsoon, 4.1 times greater during post-monsoon and 2.5 times greater during monsoon than during summer （P〈0.01 in all cases）. Similarly, total organic carbon was 5.9 times greater during pre-monsoon, 3.1 times greater during post-monsoon and 69% greater during monsoon than during summer. In general, higher levels of sediment carbon were recorded during pre and post-monsoon seasons than during other seasons. Total carbon concentration was correlated negatively to temperature, sand and phosphorus （P 〈0.01）; positively correlated with redox potential, silt, clay, c/N ratio, potassium （P 〈0.01） and nitrogen （P〈0.05）; but not correlated with soil depth, pH or salinity. This work revealed that the carbon burial was rapid at the annual rate of 2.8% for total carbon, and 6.7% for total organic carbon in mangrove-planted sediment. cleating of mangroves can result in significantly and rapidly reduced carbon *** study highlights the importance of natural and plantation mangrove stands for conserving sediment carbon in the tropical coastal domain.

关键词： mangrove sediment carbon burial total carbon total organiccarbon

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Trend in coral-Algal Phase Shift in the Mandapam Group of Islands, Gulf of Mannar Marine Biosphere Reserve, India

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Journal of Ocean University of china 2016年第6期15卷 1080-1086页

作者： M. Machendiranathan L. Senthilnathan R. Ranith A. saravanakumar T. Thangaradjou S. B. choudhrys S. K. Sasama center of Advanced Studies in Marine Biology Faculty of Marine Sciences Annamalai University Parangipettai - 608502 Tamilnadu India Academy of Maritime Education and Training (AMET) University Center for Maritime Information ServicesChennai - 603112 Tamilnadu India central Marine Fisheries Research Institute ( cMFRI) Fishery Environment Management DivisionKochi - 682018 Kerala India Science and Engineering Research Board (SERB) New Delhi - 110070 India National Remote Sensing center lndian Space Research Organization (Dept. of Space Govt. of India)Balanagar Hyderabad - 500625 Andhra Pradesh lndia

The present study revealed proliferation of macro-algae modifying coral reef ecosystems in a different manner due to diseases and sedimentations in the Mandapam group of islands in the Gulf of Mannar. Benthic surveys were conducted with major attack of seven coral reefs diseases with high sedimentation rate, nine species of fleshy macro-algae(Turbinaria ornata, Turbinaria conaides, caulerpa scalpelliformis, caulerpa racemosa, Kappaphycus alvarezii, Padina gymnosphora, Sargassum wightii, Ulva reticulata and calurpa lentillifera) proliferation against major corals life forms(Acropora branching, Acropora digitate, Acropora tabulate, coral massive, coral submassive, coral foliose and coral encrusting). The results confirm that diseased corals most favor to macro-algae growth(15.27%) rather than the sedimentation covered corals(8.24 %). In the degradation of coral life forms, massive corals were more highly damaged(7.05%) than any other forms. Within a short period of time(May to September), coral coverage shrank to 17.4% from 21.9%, macro-algae increased 23.51% and the average sedimentation rate attained 77.52 mg cm^(-2) d^(-1) with persisting coral reef diseases of 17.59%. The Pearson correlation showed that the coral cover decreased with increasing macro-algae growth, which was statistically significant(r =-0.774, n = 100, P cro-algae c. scalpellifrmis, T. ornata, c. racemosa, T. conaides, U. reticulata, S. wightii, K. alvarezii, P. gymnosphora and c. lentillifera increased with percentages of 6.0, 5.8, 5.7, 4.9, 4.2, 3.7, 2.7 and 1.9, respectively. If this trend continues, the next generation of new recruit corals will undoubtedly lead to a phase shift in Gulf of Mannar corals.

关键词：珊瑚藻生物圈保护区相移平均沉积速率宏观藻类海洋印度沉积作用

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Triggering the biocontrol of Botrytis cinerea by Trichoderma harzianum through inhibition of pathogenicity and virulence related proteins

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Frontiers of Agricultural Science and Engineering 2018年第2期5卷 271-279页

作者： Kandasamy saravanakumar Zhixiang LU Hai XIA Meng WANG Jianan SUN Shaoqing WANG Qiang-qiang WANG Yaqian LI Jie cHEN School of Agriculture and Biology/State Key Laboratory of Microbial Metabolism/Key Laboratory of Urban Agriculture (South) of the Ministry of Agriculture Shanghai Jiao Tong University

This study reports a strain of Trichoderma harzianum ccTcc-SBW0162 with potential to enhance biocontrol activity against gray mold pathogen, Botrytis cinerea, and with a pivotal role in tomato(Solanum esculentum) plant growth enhancement. A total of 254 Trichoderma isolates were screened by in vitro antagonistic assay. Of these, 10 were selected for greenhouse experiments based on their greater inhibition of B. *** in vitro antagonistic assay and greenhouse experiments indicated that T. harzianum ccTcc-SBW0162 gave the highest inhibition rate(90.6%) and disease reduction(80.7%). Also, to study the possible mechanism associated with antifungal activity of ccTcc-SBW0162 against B. cinerea, molecular docking was used to assess the interactions between ccTcc-SBW0162-derived metabolites, and pathogencity and virulence related proteins of B. cinerea. The molecular docking results indicated that the combination of harzianopyridone,harzianolide and anthraquinone c derived from ccTccSBW0162 could synergistically improve antifungal activity against B. cinerea through the inhibition/modification of pathogenicity and virulence related ***, this computerized modeling work emphasized the need for further study in the laboratory to confirm the effect T. harzianum-derived metabolites against the proteins of B. cinerea and their interactions.

关键词： anthraquinone Botrytis cinerea harzianolide harzianopyridone molecular docking Trichoderma harzianum

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