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Cloud Data Encryption and Authentication Based on Enhanced Merkle Hash Tree Method

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Computers, Materials & Continua 2022年第7期72卷 519-534页

作者： j.Stanly jayaprakash Kishore Balasubramanian Rossilawati Sulaiman Mohammad Kamrul Hasan B.D.Parameshachari Celestine Iwendi Department of CSE Mahendra Institute of TechnologyNamakkal637503India Department of EEE Dr.Mahalingam College of Engineering and TechnologyPollachi642003India Center for Cyber Security Faculty of Information Science and TechnologyUniversiti Kebangsaan Malaysia(UKM)43600BangiMalaysia Department of Telecommunication Engineering GSSS Institute of Engineering and Technology for WomenMysuruIndia School of Creative Technologies University of BoltonDeane RoadBoltonUnited Kingdom

Many organizations apply cloud computing to store and effectively process data for various *** user uploads the data in the cloud has less security due to the unreliable verification process of data *** this research,an enhanced Merkle hash tree method of effective authentication model is proposed in the multi-owner cloud to increase the security of the cloud *** Hash tree applies the leaf nodes with a hash tag and the non-leaf node contains the table of hash information of child to encrypt the large *** Hash tree provides the efficient mapping of data and easily identifies the changesmade in the data due to proper *** developed model supports privacy-preserving public auditing to provide a secure cloud storage *** data owners upload the data in the cloud and edit the data using the private *** enhanced Merkle hash tree method stores the data in the cloud server and splits it into *** data files requested by the data owner are audit by a third-party auditor and the multiowner authentication method is applied during the modification process to authenticate the *** result shows that the proposed method reduces the encryption and decryption time for cloud data storage by 2–167 ms when compared to the existing Advanced Encryption Standard and Blowfish.

关键词： Cloud computing cloud data storage cloud service provider merkle hash tree multi-owner authentication third-party auditor

Synthesis, antibacterial and anti-inflammatory activity of bis(indolyl)methanes

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Chinese Chemical Letters 2016年第1期27卷 16-20页

作者： Santhisudha Sarva jayaprakash Soora Harinath Siva Prasad Sthanikam Selvarajan Ethiraj Mohanasrinivasan Vaithiyalingam Suresh Reddy Cirandur Department of Chemistry Sri Venkateswara University School of Biosciences and Technology VIT University

A series of bioactive bis（indolyl）methanes are synthesized by one-pot green reaction of indole with various substituted aldehydes by microwave irradiation under solvent free conditions. The antibacterial activity against Staphylococcus aureus and anti-inflammatory activity of the synthesized bis（indolyl）-methanes are evaluated in vitro and compared to standard drugs tetracycline and diclofenac,respectively. The majority of the compounds showed good antibacterial and anti-inflammatory ***, compounds 3j, 3i, 3k and 3g exhibited much higher anti-inflammatory activity than the standard diclofenac drug and thus qualify for clinical trials to be used as an anti-inflammatory compound.

关键词： Bis(indolyl)methanes Microwave irradiation Antibacterial activity Anti-inflammatory activity

A hybrid organic-inorganic polariton LED

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Light(Science & Applications) 2019年第1期8卷 475-485页

作者： Rahul jayaprakash Kyriacos Georgiou Harriet Coulthard Alexis Askitopoulos Sai K.Rajendran David M.Coles Andrew j.Musser jenny Clark Ifor D.W.Samuel Graham A.Turnbull Pavlos G.Lagoudakis David G.Lidzey Department of Physics and Astronomy The University of SheffieldHicks BuildingHounsfield RoadSheffield S37RHUK Department of Physics and Astronomy University of SouthamptonSouthampton SO171BJUK Skolkovo Institute of Science and Technology MoskvaRussia Organic Semiconductor Centre SUPASchool of Physics and AstronomyUniversity of St AndrewsSt.AndrewsFife KY169SSUK Baker Laboratory Cornell University259 East AvenueIthacaNY 14850USA

Polaritons are quasi-particles composed of a superposition of excitons and photons that can be created within a strongly coupled optical ***,we describe a structure in which a strongly coupled microcavity containing an organic semiconductor is coupled to a second microcavity containing a series of weakly coupled inorganic quantum *** show that optical hybridisation occurs between the optical modes of the two cavities,creating a delocalised polaritonic *** electrically injecting electron–hole pairs into the inorganic quantum-well system,we are able to transfer energy between the cavities and populate organic-exciton *** approach represents a new strategy to create highly efficient devices for emerging‘polaritonic’technologies.

关键词： state. inorganic polar

Effect of Impaired Lung Function on the Development and Progression of Endobronchial Premalignant Lesions

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journal of Cancer Therapy 2012年第4期3卷 364-371页

作者： Vijayvel jayaprakash Gregory M. Loewen Martin C. Mahoney Samjot Dhillon Sai Yendamuri D. Kyle Hogarth Enrique Machare-Delgado Ravi j. Menezes Sandra M. jacob Mary E. Reid Cancer Prevention and Population Sciences Roswell Park Cancer Institute Buffalo USA Department of Medical Imaging University Health Network Toronto Canada Department of Medicine Roswell Park Cancer Institute Buffalo USA Department of Social and Preventive Medicine State University of New York at Buffalo Buffalo USA Department of Thoracic Surgery Roswell Park Cancer Institute Buffalo USA Pulmonary Oncology Sacred Heart Medical Center Spokane USA School of Medicine State University of New York at Buffalo Buffalo USA Section of Pulmonary and Critical Care Medicine University of Chicago Chicago USA

Background: Chronic obstructive pulmonary disease (COPD) and presence of endobronchial premalignant lesions (EPL) are individual risk factors for lung cancer (LC). However, effect of impaired lung function (ILF) on the natural history of EPL has not been explored. Patients and Methods: This study included 217 high-risk participants from a hospital-based LC surveillance cohort who underwent pulmonary function testing followed by bronchoscopy with endobronchial biopsies. Baseline histopathology diagnoses included 91 cases (41.9%) with squamous metaplasia (SM), 25 (11.5%) with squamous dysplasia (SD), 1 (0.5%) with in-situ carcinoma and 5 (2.3%) with invasive LC. Follow-up biopsies were obtained for 69 patients, and 16 (23.2%) patients demonstrated progression to a higher grade lesion. Regression models were used to evaluate the relationship between ILF and EPL. All the models were adjusted for age, gender and tobacco smoking. Results: Patients with FEV1% of <50% had 4.5 times greater risk of being diagnosed with an EPL [95% confidence interval: 1.93-10.80] and 8-fold greater risk of SD, compared to patients with FEV1% ≥80. COPD was associated with 2.7 and 4.8 times greater risk of SM and SD, respectively. The mean time to progression to a higher-grade lesion was shorter in COPD patients compared to patients without COPD (27 versus 50 months, p = 0.02). Conclusion: Our results indicate that ILF may be a predictor of prevalence and progression of EPLs among patients at high risk of LC. Therefore, spirometry can be a complementary pre-screening tool for identifying patients with EPL who need more intense LC surveillance.

关键词： COPD Lung Cancer Premalignant Lesions Dysplasia Pulmonary Function Test Spirometry