Sensor networks security based on sensitive robots agents. A conceptual model

Multi-agent systems are currently applied to solve complex problems. The security of networks is an eloquent example of a complex and difficult problem. A new model-concept Hybrid Sensitive Robot Metaheuristic for Intrusion Detection is introduced in the current paper. The proposed technique could be used with machine learning based intrusion detection techniques. The new model uses the reaction of virtual sensitive robots to different stigmergic variables in order to keep the tracks of the intruders when securing a sensor network.Comment: 5 page

A Study On Air Pollution And Environmental Challenges In Chennai City

Environmental pollution is a severe issue in both developed and developing countries. Pollution is defined undesirable state of natural environment being contaminated with harmful substances as a consequence of human activities. There is clear relationship between the growth manmade green house gas emissions and observed environmental climate change are claimed by policymakers. The most important causes of air pollution are human economic activities such as use of vehicles and industrial operations mainly in Chennai city. Air pollution is various types such as noise, water, air. It causes damages that are normally inflicted in society at large rather than on those directly responsible. In several city air is already polluted that it has been causing illness and deaths among elderly people and children. The high pollution density has placed great strain on available infrastructure and major problem for environmental in major cities of Tamil Nadu. It is recognized that climate change due to global warming going to important threat safety of millions of people not only living near coastline but also impacts on changing cyclones. The aim of the study focuses on objectives to environment in Chennai city to estimate the problems of air pollution environment in Challenge in Chennai city and suggest health cost of vehicular pollution and to suggest the Government measure to control air pollution in environment Chennai city

DETERMINATION OF BIOACTIVE CONSTITUENTS OF LEAVES OF CORCHORUS AESTUANS (L.) BY GC - MS ANALYSIS

Objective: To investigate the bioactive constituents of ethanol extract of Corchorus aestuans (L.) using GC-MS technique. Methods: The ethanol extract of leaves were subjected to GC- MS analysis using GC Clarus 500 (Perkin Elmer) with Elite- 5MS (5%Diphenyl / 95% Dimethyl poly siloxane, 30 mm x 0.25 mm x0.25μm df). The 2 μl extract sample injected and the components were separated using Helium (1 mL/min) as the carrier gas. Bioactive constituents were detected by the Turbo mass gold detector (Perkin Elmer) with the aid of the Turbomass 5.2 software. Results: The analysis revealed the presence of fourteen different bioactive constituents namely 3, 7,11,15-tetramethyl-2-hexadecen-1-ol (5.6%), Trans-2-undecen-1-ol (1.26%), E-7-Tetradecenol (1.97%), n-Hexadecanoic acid (25.82%), Phytol (22.34%), 9,12,15-octadecatrienoic acid, methyl ester, (Z,Z,Z)- (20.23%), Docosanoic acid, ethyl ester (1.99%), 1-Eicosanol (2.11 %), 9,9-dimethoxybicyclo[3.3.1] nona-2,4-dione (0.60%), Heptadecanoic acid, heptadecyl ester (0.95%), Pentadecanoicacid,2,6,10,14-tetramethyl-,methylester(0.91%), 3-Hexadecycloxycarbonyl-5-(2-hydroxyethyl)-4-methylimidazolium ion (0.90%), Squalene (8.03%), Vitamin E (7.24%). Conclusion: The presence of various bioactive compounds confirms the application of Corchorus aestuans in various disorders. However, isolation of individual phytochemical constituents may proceed to find a lead for herbal therapy

Distribution Grid Voltage Regulation for Power Quality Improvement Using UPQC

Poor voltage regulation is experienced for the costumers connected at the end of low voltage distribution grid. In the proposed paper, voltage regulation is achieved in the distribution grid using Unified Power Quality Compensator (UPQC). Different control techniques are used for shunt inverter in UPQC to improve the power quality of the Distribution Grid. Control techniques, including the PI control, DQ control and Minimum Power Point Tracking (mPPT) for voltage control are analyzed and simulated in the proposed paper. Simulation with UPQC is done for three different control techniques and its performances are compared. The mPPT avoids the circulation of unnecessary reactive compensation for voltage regulation by operating at the Minimum Power Point (mPP). Comparative analysis is made for UPQC with the different control techniques during sag, swell and fault condition. The simulation of distribution Grid for voltage regulation using UPQC is carried out using MATLAB Simulink

PREPARATION AND CHARACTERIZATION OF CEFTRIAXONE SODIUM ENCAPSULATED CHITOSAN NANOPARTICLES

Objective: The objective of this study was to prepare ceftriaxone sodium chitosan nanoparticles (CS-NP) from different drug and polymer ratios and analyze their physicochemical characteristics.Methods: Ceftriaxone sodium loaded chitosan nanoparticles were prepared using chitosan as a polymer and tri sodium polyphosphate (TPP) as cross linking agent by ionic cross linking and coacervation with the aid of sonication. Various trials have been carried out for the confirmation of nanoformulation. Parameters such as the zeta potential, polydispersity, particle size, entrapment efficiency, in vitro drug release Thermo gravimetric analysis and scanning electron microscope of the nanoparticles were assessed for confirmation of nanoformulation.Results: The formulated nanoparticles showed mean particle size, polydispersity index and zeta potential to be 183.1±8.42 nm, 0.212±0.05, +38.5±1.6 mV respectively and the drug loading was found to be 46.42±10 %. In vitro drug release was showed a biphasic release pattern with initial burst release followed by sustained release of formulated nanoparticles. The cumulative percentage of drug release was about 83.08 %.Conclusion: Formulation F2 was found to be the best formulation with a higher cumulative percentage of drug release. Modified ionic gelation method can be utilized for the development of chitosan nanoparticles of ceftriaxone sodium. Polymer and crosslinking agent concentrations and sonication time are rate-limiting factors for the development of the optimized formulation. The chitosan nanoparticles developed would be capable of sustained delivery of ceftriaxone sodium

Engaging with Sustainability Issues in Metropolitan Chennai

Publication en ligne, City report series (Chance2Sustain) - ISSN 2309-8198Chennai is the largest metropolitan city in South India (8.7 million in 2011) and the provincial capital of the large state of Tamil Nadu (population 72 million in 2011). Before that, under British rule, the city was the capital of the Madras Presidency, and was known as Madras until 1996, when the name was officially changed to Chennai. Located on the east coast of India, on the Bay of Bengal, sea trade has been an important aspect of the regional economy since at least the colonial period. Still today, the city combines political functions with economic command functions for both manufacturing and services, reflecting the region's diversified economy. The Chennai metropolitan area has witnessed strong growth over the last 20 years in automobile manufacturing, software services, hardware manufacturing, healthcare and financial services (CDP 2009). However, it should be noted that only 30% of total employment in the city takes place in the formal sector i.e., is covered by contracts and labour laws, the remaining 70% falls in the informal sector. This underscores the importance of small and micro enterprises and self-employment for providing goods, services and livelihoods in the local economy

Validation of photovoltaics powered UPQC using ANFIS controller in a standard microgrid test environment

The power quality improvement becomes one of the important tasks while using microgrid as main power supply. Because the microgrid is combination of renewable energy resources. The renewable energy resources are intermittent in power supply and at the peak loading condition it has to supply the required power. So, the power quality problems may increase in that time. Out of all power quality issues the voltage drop and harmonic distortion is considered as the most serious one. In recent years unified power quality conditioner (UPQC) is emerged as most promising device which compensates both utility as well as customer side power quality disturbances in effective way. The compensating potentiality used in the UPQC is limited by the use of DC link voltage regulation and the conventional proportional integral (PI) controller. In this paper the compensating potentiality of the UPQC device is controlled by an adaptive neuro fuzzy inference system (ANFIS) control and it is powered from the available photovoltaics (PV) power generation. The effect of adding an intelligent UPQC is tested in the standard IEEE-14bus environment. MATLAB 2017b is used here for testing and plotting the simulation results

Engaging with Sustainability Issues in Metropolitan Chennai

Publication en ligne, City report series (Chance2Sustain) - ISSN 2309-8198Chennai is the largest metropolitan city in South India (8.7 million in 2011) and the provincial capital of the large state of Tamil Nadu (population 72 million in 2011). Before that, under British rule, the city was the capital of the Madras Presidency, and was known as Madras until 1996, when the name was officially changed to Chennai. Located on the east coast of India, on the Bay of Bengal, sea trade has been an important aspect of the regional economy since at least the colonial period. Still today, the city combines political functions with economic command functions for both manufacturing and services, reflecting the region's diversified economy. The Chennai metropolitan area has witnessed strong growth over the last 20 years in automobile manufacturing, software services, hardware manufacturing, healthcare and financial services (CDP 2009). However, it should be noted that only 30% of total employment in the city takes place in the formal sector i.e., is covered by contracts and labour laws, the remaining 70% falls in the informal sector. This underscores the importance of small and micro enterprises and self-employment for providing goods, services and livelihoods in the local economy

Non-descent vaginal hysterectomy for large uterus-safety and feasibility

Background: Non Descent Vaginal Hysterectomy (NDVH) is removal of uterus through vagina in non-prolapsed uterus. The objective of the present study was to assess safety and feasibility of NDVH in patients with large uterus (>12 weeks size uterus).Methods: Retrospective study was conducted in Department of Obstetrics and Gynecology of Shree Dharmasthala Manjunatheshwara (SDM) College of Medical Sciences and Hospital, Dharwad, India from May2014 to May 2017. Effort was made to perform hysterectomies vaginally in women with benign conditions with large uterine size. Information regarding age, parity, uterine size, blood loss, duration of operation, number of fibroids, other surgical difficulties encountered, intra–operative and post-operative complications were recorded.Results: Total of 65 cases was selected for NDVH with large uterine size. All successfully underwent NDVH. 25 patients had uterus of 10-12 weeks size, 17 had uterine size of 12-14 weeks size. Mean duration of surgery was 90 min. Mean blood loss was 300ml. Post-operative complications were minimal. All patients had early mobility with faster resumption to daily activities. Mean hospital stay was 4-5 days.Conclusions: Non descent vaginal hysterectomy is safe, cost effective method of hysterectomy in women with large uterus requiring hysterectomy for benign conditions with less complications, shorter hospital stay and less morbidity