Effect of 3.0 wt% Indium doping on ethanol sensing properties of nanocrystalline Bi2O3

Nanocrystalline powders of pure and 3.0 wt% indium doped Bismuth oxide (Bi2O3) were prepared by ethyl alcohol mediated decomposition route. The prepared samples were then characterized in order to investigate the structural, electrical and reducing gas sensing properties of pure and In doped Bismuth oxide. X-ray diffraction (XRD) was used to confirm the material structure and transmission electron microscopy (TEM) to depict the crystallite microstructure. Bismuth oxide based thick films were expose to study the conductance response of different reducing gases such as like liquefied petroleum  (LPG), ammonia (NH3), hydrogen sulfide (H2S), and ethanol gas (C2H5OH) etc. The sensor exhibited various sensing responses to these gases at different operating temperatures. From result it is found that 3.0 wt% In-doped Bi2O3 shows the maximum response to 50 ppm ethanol at 260 0C also fast response and good recovery are the main features of investigated sensors

MATLAB based Brain Tumour Extraction using Artificial Neural Network

Brain tumour is the major cause of mortality among children and adults. The chance of survival can be greater when the tumour is detected correctly at its early stage. This paper presents a neural network techniques for the classification of magnetic resonance brain image. The proposed technique consists of three stages, features extraction from gray scale MR Image using gray level co-occurrence matrix, MR image segmentation using k-mean clustering method and classification of MR Image into normal and abnormal (tumourous) image using feed-forward neural network. This technique have been developed on MATLAB version 7.5.0 platform

GPS Based Vehicular Monitoring and Tracking Using Arm

This paper presents an efficient system which is not only smarter but economical. It provides proper solution against theft of vehicle, accidents of vehicles etc. It includes ARM7 LPC2148 processor, GSM/GPRS, GPS, MEMS, temperature sensor etc. The whole system is controlled by the ARM7 processor to provide exact location of the vehicle. It also monitors the vehicle parameters e.g. temperature. To manage and carry the proper operation, without any error, a precise program is stored into the ARM7 LPC2148 processor. Nowadays, rush of vehicles is increasing with increasing population. As a result, the people have come across number of problems like heavy traffic of vehicles, accidents of vehicles etc. The system described in this paper is able to reduce these types of annoying problems to greater extend

A Review on Enhancing Organization Security using Attribute-Based Encryption for Data Sharing

With the recent growth of networking, peoples can share their data with others through online, by using social networks or cloud computing but at the same time there has been increasing demand for data security. People would like to make their private data only accessible to the authorized people. In data sharing systems, access policies and the support of policies updates are most challenging issues. Attribute-based encryption (ABE) and Cipher text policy attribute based encryption (CP-ABE) are becoming promising cryptographic solutions to this issue and achives a fine-grained data access control. It enables data owners to define their own access policies over user attributes and enforce the policies on the data to be distributed. The major drawback of these systems is the key escrow problem. The proposed scheme solves the key escrow problem which depends on attribute based encryption technique for the shared data. Paillier Cryptosystem is utilized for encryption of keys for assignment and revocation process while Twofish algorithm is used to encrypt and decrypt stored data of users. Whenever data owner upload personal documents on cloud server, first the keywords will get fetched from the documents and index will be created. Lucene indexing algorithm is used for indexing of keywords. A Blind Storage scheme allows a client to store a set of files on a remote server

Bianchi Type III Cosmological Model with Binary Mixture of Perfect Fluid and Dark Energy

Abstract. The paper deals with Bianchi type III cosmological models filled with perfect fluid and dark energy components. The two sources are assumed to interact minimally so that their energy momentum tensors are conserved separately. The exact solution of Einstein's field equations is obtained by assuming the expansion θ in the model is proportional to the shear (σ). This condition leads to A = B m , where A and B are metric coefficients and m is a constant. The physical and geometrical behaviors of the models are also discussed

Information Searching Using Web Data Extraction for Acquiring Enrich MM Results

There are many question answer sites are available now a day. In that Community Question Answering Sites are achieved lots of popularity over last years. But the drawback of available question answering system is that it can only provide multiple solutions of the textual answer and user need to select one of them. In this paper, we propose a scheme that enriches the textual answer with multimedia data. Our scheme consists of four models: QA pair extraction, answer medium selection, query generation and selection and presentation. The type media information added with the textual data is determined. The question answer pair is generated from the available Community Question Answering Sites database. Query is generated for the multimedia data. The final resulting data must be selected after re-ranking and removal operation and then present to the user. DOI: 10.17762/ijritcc2321-8169.15014

Validated High Performance Thin Layer Chromatography Method for Simultaneous Estimation for Gallic Acid and Quercetin in Polyherbal Blend and Their Quantitative Estimation

Simple, sensitive high performance thin layer chromatography method for the estimation of gallic acid and quercetin in in-house polyherbal blend has been developed and validated. Methanolic solution of herbal blend comprising of Emblica officinalis, Camellia sinensis and Garcinia cambogia was used for analysis. The sepa-ration was performed on TLC aluminum plates precoated with silica gel G60 F254 and toluene: ethyl ace-tate: formic acid (5:1.5:1 v/v/v) at 254 nm scanning wavelength. The system gave well resolved peaks for gal-lic acid and quercetin at Rf 0.14 and Rf 0.29 respectively. The method validated as per ICH Q2R1 guidelines which shows regression co-efficient 0.9939 for gallic acid and 0.9988 for quercetin in range of 2–6 μg/ml. Recovery of gallic acid and quercetin was found in range of 98–102 % which confirms the accuracy of meth-od. Precision study (interday & intraday) showed that the relative standard deviation is less than 2 %, show-ing method is well precise. Proposed validated HPTLC method is simple, precise, specific, robust and accu-rate, and could find application in routine quality-control analysis. The method was used for quantitative es-timation of gallic acid and quercetin in the polyherbal blend and was found as 1.648 % w/w and 3.165 % w/w respectively

Calculating charge density of clays: An improvised method

Two benchmark Vertisols from Maharashtra, viz. Linga series (Typic Haplusterts in Nagpur district) and Pahur series (Sodic Haplusterts in Yavatmal district) of Maharashtra were chosen for the study. The fine clay fractions are dominated by smectite with small amounts of vermiculite. Reduced CECs of the fine clays were determined after the Greene-Kelly test. CEC and calculated surface charges are distributed in both the tetrahedral and octahedral layers of which the former (65%) is higher than the latter (35%). However, the proportion of octahedral CEC and charge increases (44%) with the deduction of the contribution of vermiculite and chlorite CEC from the tetrahedral (corrected) CEC. The The CEC and charge distribution exhibited fairly good relationship with some soil properties such as, fine clay, COLE, moisture retention at 1500 kPa, hydraulic conductivity and pH. The study also indicated that determination of reduced CECs from Greene-Kelley test is an effective means of measuring the octahedral and tetrahedral CECs and also for calculating the charge of soil clays. The Pahur soils could be more prone to hydroxy-interlayering owing to its higher tetrahedral charge than Linga soils. The surface area method overestimates the calculation of charge from CEC than formula weight method.In India, the black soils occupy about 116 m ha (Bhattacharyya et al., 2009) of which about 30 m ha is in Maharashtra and about 8.04 m ha is in Vidarbha region. These soils are developed in alluvium derived from weathering of Deccan basalt (Pal et al., 2006). The black soils of the Deccan Trap are rich in plagioclase feldspars and yield dioctahedral smectite as its first weathering product (Pal and Deshpande, 1987; Pal et al., 1989; Bhattacharyya et al., 1993). Earlier review on the Vertisols of India indicate that black soils of India are dominated by beidellite-nontronite type of minerals (Ghosh and Kapoor, 1982). However, fine clay smectite when subjected to the Greene-Kelly test (Greene-Kelly, 1953) by heating clays with Li and subjecting to glycerolsolvation, expands to about 18 Å and contracts to ˜9.5 Å indicating this to be a mixture of beidellite/nontronite and montmorillonite in which the amount of the former is more than the latter (Pal and Deshpande 1987; Ray et al., 2003