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Enhanced security with Improved Defensive Routing Mechanism in Wireless sensor Networks

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Computer systems science & Engineering 2023年第6期45卷 2795-2810页

作者： R.sabitha C.gokul Prasad s.Karthik Department of Computer science&Engineering SNS College of TechnologyCoimbatoreTamilnaduIndia Department of Electronics and Communication Engineering SNS College of EngineeringCoimbatoreTamilnaduIndia

In recent scenario of Wireless sensor Networks(WsNs),there are many application developed for handling sensitive and private data such as military information,surveillance data,tracking,***,the sensor nodes of WsNs are distributed in an intimidating region,which is non-rigid to *** recent research domains of WsN deal with models to handle the WsN communications against malicious attacks and *** traditional models,the solution has been made for defending the networks,only to specific ***,in real-time applications,the kind of attack that is launched by the adversary is not ***,on developing a security mechanism for WsN,the resource constraints of sensor nodes are also to be *** that note,this paper presents an Enhanced security Model with Improved Defensive Routing Mechanism(IDRM)for defending the sensor network from various ***,for efficient model design,the work includes the part of feature evaluation of some general attacks of *** IDRM also includes determination of optimal secure paths and Node security for secure routing *** performance of the proposed model is evaluated with respect to several factors;it is found that the model has achieved better security levels and is efficient than other existing models in WsN *** is proven that the proposed IDRM produces 74%of PDR in average and a minimized packet drop of 38%when comparing with the existing works.

关键词： Enhanced security model wireless sensor networks improved defensive routing mechanism secure paths node security

Female sex in experimental traumatic brain injury research:forging a path forward

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Neural Regeneration Research 2022年第3期17卷 550-552页

作者： Theresa Currier Thomas Caitlin E.Bromberg gokul Krishna Department of Child Health University of Arizona College of Medicine-Phoenix BARROW Neurological Institute at Phoenix Children’s Hospital PhoenixAZUSA Phoenix VA Health Care system PhoenixAZUSA Arizona state University TempeAZUSA

Traumatic brain injury(TBI) is a leading cause of death and disability worldwide,with estimates indicating that -50% of the world's population will acquire a head injury at some point in their lifetime(Maas et al.,2017).Mild TBIs account for -80% of all reported cases,with up to 43% of all TBI patients reporting symptoms beyond 2 weeks *** of 2016,only 7% of preclinical TBI experiments included both male and female sexes,and fewer studies analyzed the data using sex as a biological variable(spani et al.,2018).

关键词： injury death

Potential antioxidant and cytoprotective effects of essential oil extracted from Cymbopogon citratus on OxLDL and H_(2)O_(2) LDL induced Human Peripheral Blood Mononuclear Cells(PBMC)

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Food science and Human Wellness 2017年第2期6卷 60-69页

作者： s.Jamuna sakeena sadullah M.s. R.Ashokkumar gokul shanmuganathan senguttuvan sivan Mozhi Niranjali Devaraj s. Department of Biochemistry University of MadrasGuindy CampusChennai 600025India Department of Biotechnology Prist UniversityPuducherryIndia

Cymbopogon citratus(lemon grass)is commonly used in traditional folk *** essential oil extracted from *** has been reported as a potential anti-oxidant and anti-inflammatory *** study has been designed to explore the protective effect of ***(lemon grass)against modified LDL(OxLDL and H2O2 LDL)induced cytotoxicity in Peripheral Blood Mononuclear Cells(PBMC).The essential oil extracted from ***(EOC)was subjected to FT-IR spectroscopic analysis for the identification of functional *** vitro antioxidant assays were carried out to assess the electron donating capability of EOC as compared with a known standard L-ascorbic *** cytoprotective effects of EOC were determined in PBMC induced with modified *** obtained from FT-IR analysis showed the presence of functional groups in EOC such as H-bonded,O-H stretching,N-H stretching,aldehyde-C-H stretching,aldehyde/ketone-C=O stretching,-C=C-stretching,-CH_(3) bending,-C-H in plane *** has greater antioxidant property when compared with the standard L-ascorbic *** at all test concentrations demonstrated free radical scavenging activity and cytoprotective effect when challenged against modified LDL in *** above results show EOC as a promising antioxidant and cytoprotective agent.

关键词： Cymbopogon citratus Antioxidants Cytoprotective PBMC Modified LDL

Virtual-reality-based digital twin of office spaces with social distance measurement feature

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Virtual Reality & Intelligent Hardware 2022年第1期4卷 55-75页

作者： Abhishek MUKHOPADHYAY G s Rajshekar REDDY KamalPreet singh sALUJA subhankar GHOsH Anasol PEÑA-RIOs gokul GOPAL Pradipta BIsWAs Indian Institute of science BangaloreIndia BT Plc UK

Background social distancing is an effective way to reduce the spread of the sARs-CoV-2 *** students and researchers have already attempted to use computer vision technology to automatically detect human beings in the field of view of a camera and help enforce social ***,because of the present lockdown measures in several countries,the validation of computer vision systems using large-scale datasets is a *** In this paper,a new method is proposed for generating customized datasets and validating deep-learning-based computer vision models using virtual reality(VR)*** VR,we modeled a digital twin(DT)of an existing office space and used it to create a dataset of individuals in different postures,dresses,and *** test the proposed solution,we implemented a convolutional neural network(CNN)model for detecting people in a limited-sized dataset of real humans and a simulated dataset of humanoid *** We detected the number of persons in both the real and synthetic datasets with more than 90%accuracy,and the actual and measured distances were significantly correlated(r=0.99).Finally,we used intermittent-layer-and heatmap-based data visualization techniques to explain the failure modes of a *** A new application of DTs is proposed to enhance workplace safety by measuring the social distance between *** use of our proposed pipeline along with a DT of the shared space for visualizing both environmental and human behavior aspects preserves the privacy of individuals and improves the latency of such monitoring systems because only the extracted information is streamed.

关键词： Virtual environment Digital twin 3D visualization Convolutional neural network Object detection social distancing

Next generation sequencing in oral disease diagnostics

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World Journal of stomatology 2018年第2期6卷 6-10页

作者： gokul sapna sridharan gokul Department of periodontics Nair Hospital Dental College Oral Pathology and Microbiology YMT Dental College and Hospital

DNA sequencing is the method of identifying the precise order of DNA nucleotides within a molecule. The information of DNA sequencing is of prime requisite for basic biological research as well as in various clinical *** can be used to determine the individual genetic sequence, larger genetic regions, chromosomes as well as to sequence RNA and proteins. since the first DNA sequencing in 1970s, there has been tremendous advancements in the technologies aimed to determine the entire human genome. The need for rapid and accurate sequencing of human genome has resulted in the introduction of next generation sequencing(NGs) technology. NGs refers to the secondgeneration DNA sequencing technologies where millions of DNA can be sequenced simultaneously. some of the next gen sequencing methods employed are Roche/454 life science, Illumina/solexa, sOLiD system and *** of NGs in decoding the genomic database of various oral diseases may possess therapeutic and prognostic value. This presentation provides an overview of the basics of NGs and their potential applications in oral disease diagnostics.

关键词： Molecular diagnostics Next generation sequencing Illumina Oral diseases Oral cancer

Assessment of the irrigation feasibility of low-cost filtered municipal wastewater for red amaranth(Amaranthus tricolor L ***)

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International soil and Water Conservation Research 2015年第3期3卷 239-252页

作者： gokul Chandra Biswas Animesh sarkar Md HRashid Monirul Hassan shohan Mirajul Islam Qingyue Wang Department of Genetic Engineering and Biotechnology School of Life SciencesShahjalal University of Science and TechnologySylhet 3114Bangladesh Department of Food Engineering and Tea Technology School of Applied Sciences and TechnologyShahjalal University of Science and TechnologySylhet 3114Bangladesh Department of statistics School of Physical SciencesShahjalal University of Science and TechnologySylhet 3114Bangladesh Department of Environmental science and Technology Saitama University255 Shimo-OkuboSakura-kuSaitama 338-8570Japan

Because of the scarcity of clean water,treated wastewater potentially provides an alternative source for *** the present experiment,the feasibility of using low-cost filtered municipal wastewater in the irrigation of red amaranth(Amaranthus tricolor L ***)cultivation was *** collected municipal wastewater from fish markets,hospitals,clinics,sewage,and kitchens of households in sylhet City,Bangladesh were mixed and filtered with nylon *** filtration methods were applied using the following materials:sand(T_(1));sand and wood charcoal consecutively(T_(2));sand,wood charcoal and rice husks consecutively(T_(3));sand,wood charcoal,rice husks and sawdust consecutively(T_(4));sand,wood charcoal,rice husks,sawdust and brick chips consecutively(T_(5));and sand,wood charcoal,rice husks,sawdust,brick chips and gravel consecutively(T_(6)).The water from ponds and rivers was considered as the control treatment(T_(o)).The chemical properties and heavy metals content of the water were determined before and after the low cost filtering,and the effects of the wastewater on seed germination,plant growth and the accumulation rate of heavy metals by plants were *** filtration,the pH,EC and TDs ranged from 5.87 to 9.17,292 to 691 μs cm^(-1) and 267 to 729 mg L^(-1),*** EC and TDs were in an acceptable level for use in irrigation,satisfying the recommendations of the ***,select pH values were unsuitable for *** metal concentrations decreased after applying each *** reduction of Fe,Mn,Pb,Cu,As and Zn were 73.23%,92.69%,45.51%,69.57%,75.47%and 95.06%,*** we considered the individual filtering material,the maximum amount of As and Pb was absorbed by sawdust;Cu and Zn by wood charcoal;Mn and Cu by sand and Fe by *** the six filtration treatments,T_(5) showed the highest seed germination(67.14%),similar to the control T0(77.14%).The healthy plants/pot ratio(93.62%)was significantly higher

关键词： Heavy metals Irrigation feasibility Low cost filtration Municipal wastewater Red amaranth

Growth, Crystal structure and Characterization of a New single Crystal: Lithium sodium Acid Phthalate (LiNaP), for Third Order Nonlinear Optical Applications

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Journal of Crystallization Process and Technology 2012年第4期2卷 130-136页

作者： B. sivakumar s. gokul Raj G. Ramesh Kumar R. Mohan Department of Physics Presidency College (Autonomous) Chennai India Department of Physics University College of Engineering Arni Anna University Chennai Arni India Department of Physics VelTech Dr.RR & Dr.SR Technical University Avadi Chennai. India

A new alkali metallo-organic single crystal of Lithium sodium Acid Phthlate (LiNaP) complex has been synthesized from aqueous solution in the equimolar ratio 3:1:2. Transparent and bulk single crystals of dimension 9 × 4 ×2 mm3 have been grown from the conventional slow-cooling technique. The crystal structure of the compound has been solved from single crystal X-ray diffraction. The compound 2[C8H4O3]4-Li3+Na+ crystallizes in triclinic system with a space group of Pī having cell dimensions a = 7.5451(2) ? b = 9.8422(3) ? c = 25.2209(7) ? α = 80.299(2);β = 89.204(2);γ = 82.7770(10). FTIR measurement was carried out fo? LiNaP to study the vibrational structure of the compound. The various functional groups present in the molecule and the role of H-bonds in stabilizing the crystal structure of the compound have been explained. Optical absorption properties were studied for the grown crystal using UV-Vis-NIR spectrum. Thermal measurements were carried out for LiNaP to determine the thermal strength as well as to ascertain the hydrated nature of the crystal. Third order nonliner optical studies have also studied by Z-scan techniques. Nonlinear absorption and nonlinear refractive index were found out and the third order bulk susceptibility of compound was also estimated. The results of all studies have been discussed in detail.

关键词： single Crystal X-Ray Diffraction FTIR Analysis UV-Vis-NIR spectroscopy Thermal Analysis Nonlinear Optical Materials Third-Order Nonlinearity Z-scan

Introduction of Compressive Residual stress by Means of Cavitation Peening into a Titanium Alloy Rod Used for spinal Implants

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Materials sciences and Applications 2013年第7期4卷 23-28页

作者： Osamu Takakuwa Amrinder s. Gill gokul Ramakrishnan seetha R. Mannava Vijay K. Vasudevan Hitoshi soyama Department of Nanomechanics Tohoku University Sendai Japan school of Dynamic systems University of Cincinnati Cincinnati USA

The introduction of compressive residual stress is an effective way to reduce fretting fatigue and fretting wear between a spinal implant rod and its holding fixture. The objective of this paper is to demonstrate that cavitation peening can introduce compressive residual stress into the surface of a spinal implant rod manufactured from medical grade titanium alloy Ti-6Al-4V, which has already been processed by glass shot peening. In order to apply the cavitation peening for the small rod, whose diameter is only 5.5 mm, the cavitating region was concentrated by increasing the ambient pressure. The depth profiles of the resulting residual stress were evaluated by X-ray diffraction following layer removal by electropolishing. The results show that cavitation peening creates compressive residual stress deeper into the rod, even though the stress value at the near surface is saturated due to initial processing using glass shot peening. The depth of the compressive residual stress continuously increases from 44 μm to 230 μm with an increase in the cavitation peening processing time. In addition, the full width at half maximum value of the X-ray diffraction profile, which is closely related to the micro-strain, decreases by up to 32% following the application of cavitation peening.

关键词： Compressive Residual stress Fretting Titanium Alloy Cavitation Peening spinal Implant Rod

Burkitt's lymphoma of maxillary gingiva: A case report

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World Journal of Clinical Cases 2015年第12期3卷 1011-1016页

作者： sangeeta Patankar Poornima Venkatraman gokul sridharan shubhada Kane Department of Oral Pathology and Microbiology YMT Dental College and Hospital Department of Pathology Tata Memorial Ho- spital

Burkitt's lymphoma(BL) is an aggressive form of nonHodgkin's B-cell lymphoma with three variants namely endemic, sporadic, and immunodeficiency-associated types. It is endemic in Africa and sporadic in other parts of the world. While the endemic form is widely reported to occur in early childhood and commonly involves the jaw bones, the sporadic form typically presents as an abdominal mass. This presentation reports a rare case of sporadic form of BL clinically manifesting as a generalized gingival enlargement in an immunocompetent adult male which demonstrated an aggressive behavior. The patient reported with a prominent anterior gingival swelling of 6 mo duration which slowly enlarged in size and associated with multiple lymph node involvement. Microscopic examination of the lesion using H, E and immunohistochemical diagnosis confirmed the diagnosis as BL. The patient succumbed to the disease before any therapy could be instituted. since a wide array of causes can be attributed to gingival enlargements, it is necessary to consider malignancies as one of the important differential diagnosis so as to facilitate the need for appropriate diagnosis and prompt treatment.

关键词： Lymphoma Diagnosis Differential Non-Hodgkin’s Gingival overgrowth Prognosis Pathology Oral Immunohistochemistry