A novel SSGK to protect the communication process and shared data from unauthorized access

A cloud-based big data sharing system uses a storage facility from a cloud specialist co-op to impart data to authentic clients. As opposed to customary arrangements, cloud supplier stores the mutual data in the huge server farms outside the trust area of the data proprietor, which may trigger the issue of data classification. This paper proposes a secret sharing group key management convention (SSGK) to secure the correspondence procedure and shared data from unapproved get to. Not quite the same as the earlier works, a shared key is utilized to encode the common data and a secret sharing plan is utilized to circulate the shared key in SSGK. The broad security and execution investigations demonstrate that our convention profoundly limits the security and protection dangers of sharing data in distributed storage and spares about 12% of extra storage space

Hepatoprotective and antioxidant capacity of Melochia corchorifolia extracts

AbstractObjectiveTo evaluate hepato protective and antioxidant capacity of Melochia corchorifolia (M. corchorifolia) aerial part extracts.MethodsAntioxidant activity was evaluated by using three free radicals (Superoxide, Hydroxyl and DPPH) and hepatoprotective activity was assessed against CCl4 induced liver intoxication in rats.ResultsThe extracts produced concentration dependent percentage protection in decrease of serum enzymes and percentage inhibition on free radicals. Among all extracts methanol extract showed better activity with percentage protection of SGOT (78.98%), SGPT (79.65%), ALP (82.48%) and total bilirubin (80.0%) levels against CCl4 liver intoxication and also methanolic extract showed better activity with IC50 values on superoxide, hydroxyl and DPPH radicals were 127 μ g, 240 μ g and 179 μ g.ConclusionsFrom the results obtained during the study it could be concluded that M. corchorifolia aerial part extracts have antioxidant and hepatoprotective components. Further study is necessary for isolation and characterization of bioactive molecules which are responsible for hepatoprotective and antioxidant activity

Cerimetric Titration of As(III) in Acetic Acid Medium

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Qualitative and quantitative phytochemical screening and in vitro anti oxidant and anti microbial activities of Elephantopus scaber Linn.

Preliminary phytochemical analysis and quantification of total phenols, In-vitro antioxidant and anti microbial activities of the different fractions (hydro alcoholic, hexane, ethyl acetate and methanol) of Elephantopus scaber were carried out against five selected pathogenic bacteria and three fungal species. The plant fraction possesses steroids, triterpinoids, saponins, flavonoides, carbohydrates, glycosides and oils. For total phenolic content gallic acid was taken as a standard, the ethyl acetate fraction contains rich phenolic content than other fractions and the methanol fraction shows more DPPH, superoxide and hydroxyl radical scavenging activity. In Anti-microbial activity study all fractions showed good inhibition zone against three organisms i.e., Escherichia coli, Staphylococcus aureus Klebsiella pneumonia among the other test organisms along with Candida spp (fungal organism)

Intelligent Anti-Theft System for Automobiles

Security is prime sympathy toward everybody. These days all the car are outfitted with auto cop systems. Despite the fact that, the criminals are breaking the obstructions and take the vehicles. This venture is the right answer for this issue. Utilizing this venture, one can control his vehicle's car engine by method for a SMS. Hence, to conquer the above disadvantages, we are utilizing one of the remote correspondence procedure i.e., GSM (Global System for Mobile communications) is a digital cellular communications system which has quickly picked up acknowledgment and piece of the pie around the world. ARM is the heart of the task. A GSM modem is interfaced to microcontroller. This modem receives the messages from control mobile and sends as contribution to MCU. The MCU check for validation o and, in the event that IT is approved, engine control will be taken place.16X2 LCD is interfaced to show client required information. In this task TRAIC is utilized as burden controller (as a switch), MOC3021 utilized as a Triac driver. This undertaking utilizes controlled 5v, 750mA power supply. 7805 and 7812 three terminal voltage controllers are utilized for voltage direction. Bridge type full wave rectifier is utilized to redress the air conditioner yield of auxiliary of 230/12v step down transformer. The report comprises of a foundation into the territory of ARM microcontroller and mobile correspondence, how they are interfaced to each other and AT (Attention) summons set utilized as a part of correspondence

A CONCEPTUAL MOBILE GIS SYSTEM FOR GLOBAL EMISSION MONITORING

Today information systems play key role in new century, geographical information system (GIS) as a special class of information system. Now we are moving wired to wireless network, that is mobile environment shown in fig2 (any where any time and any thing computing), plays key role in this new century. In this application mobile GIS, which will be a network environment, is proposed, which can perform monitoring of emission levels at a city level or country level or Global level. The concept will be as follows. The analog data of Automated weather monitoring devices (AWMD) will be converted into digital form where by the respective Clint device will transfer data to the server using wireless application protocol (WAP) the hardware and software system need to be integrated where by the mobile GIS components include atmospheric emission data receivers/analyzers WAP clients of GPS enabled system routers are linked to a GIS with relevant software. In the light of Kyoto protocol speedy and accurate determination of emission levels is need of the hour. This is especially required for signatory countries of Kyoto protocol. In this context fixed mobile automated weather stations can be connected to a mobile GIS based data base on a network / web based GIS. This will enable daily/weekly/monthly / yearly monitoring of hazardous parameters from the atmosphere is possible. In this paper the mobile GIS based system its principle of operation hardware and software requirements and the conceptualization are presented. This system is believed to be idealistic for the monitoring and emission quantification

PEMFC Based Z-Source DVR for Voltage Sag/Swell compensation and Active/Reactive Power Analysis

Power quality is most essential aspect in power system environment. Voltage sags and swells are the frequently occurred disturbances in the power system which affecting the quality of power.  This paper propose the new dynamic voltage restorer (DVR) called proton exchange membrane fuel cell (PEMFC) based voltage type impedance source (Z-Source) dynamic voltage restorer to compensate voltage sags/swells. Active, reactive power analysis with PEMFC Based Z-Source DVR is also studied in this paper. The results are obtained by using simulink software in MATLAB.

Three Phase Modular Multilevel PV Inverter With Distributed MPPT for Grid-Connected Applications

In this paper a three - stage modular  cascaded  H-bridge multilevel inverter for a grid associated photovoltaic (PV) framework is depicted . To expand the solar energy  extraction of each PV string, an individual most extreme power point tracking (MPPT) control plan is connected, which permits the autonomous control of every dc-interface voltage. PV confuses may acquaint uneven power provided with the three-stage framework. To fathom this issue, a control plot with modulation compensession is proposed. The three-stage modular cascaded multilevel inverter model has been constructed. A fuzzy controller is actualized in this venture in the place of PI controller . Every H-bridge module is associated with a 185-W ssolar panel. Simulation results are exhibited to confirm the achievability of the proposed approach in MATLAB/SIMULINK environment

Precipitation event detection based on air temperature over the Equatorial Indian Ocean

Air temperature (AT) and precipitation observations obtained from RAMA (Research Moored Array for African-Asian-Australian Monsoon Analysis and prediction) buoy at 0° N, 90° E from July 2009 to June 2017 are used to identify rainfall events. Based on the Random forest method, which consists of classification and regression based on decision trees, an algorithm is developed to identify the rainfall events from the change in AT data with high accuracy. During the study period, a total of 22461 abrupt drops in air-temperature events were identified by the algorithm. Around 75 % of these events were used to train and develop the clustering algorithm, and the rest of the events were used for validation with the precipitation data available from the buoy. The algorithm can identify more than 94 % of rain events accurately when the classification is binary. When the rain events are classified similar to the India Meteorological Department's classification, the algorithm is still able to identify the rain events; however, the performance degrades to ~ 84 % accuracy

Constant amplitude and post-overload fatigue crack growth behavior in PM aluminum alloy AA 8009

A recently developed, rapidly solidified, powder metallurgy, dispersion strengthened aluminum alloy, AA 8009, was fatigue tested at room temperature in lab air. Constant amplitude/constant delta kappa and single spike overload conditions were examined. High fatigue crack growth rates and low crack closure levels compared to typical ingot metallurgy aluminum alloys were observed. It was proposed that minimal crack roughness, crack path deflection, and limited slip reversibility, resulting from ultra-fine microstructure, were responsible for the relatively poor da/dN-delta kappa performance of AA 8009 as compared to that of typical IM aluminum alloys