Ultrasonic and EPR Studies In Water-Glycerine Mixtures With Mnso4 & Voso4
Ultrasonic velocity, absorption and EPR measurements are carried out with manganous sulphate (MnSO4) & vanadyl sulphate (VOSO4) salts in water-glycerine mixtures in the concentration range 0.1-0.6 (w/w). The results are discussed on the basis of Hall’s two state model and molecular interaction due to complex formation between water-glycerine and water-paramagnetic ions. The spin Hamiltonian parameters for MnSO4 & VOSO4 from EPR spectra have been evaluated.
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Using Geographical Information System for Electromagnetic Fields Environmental Pollution Mapping (Applied Study in Baghdad City)
The development of new technology increases the exposure level to non-ionizing EMF radiations. Recent development of spatial data management in the framework of GIS has created a new trend of environmental mapping. In this work, maps for different EMF sources have been developed for the Baghdad city using Arc Map GIS version 10, the utilization of such spatial analysis maps is very important for future planning and EMF exposure assessment studies. Statistical analysis for measurement data was made using IBM SPSS Version 20. The maximum contribution of EMF exposure was referred to FM radio stations and GSM mobile base station due to high power transmitters and large number of base stations, maximum EMF strength caused by FM radio stations was 10.2 (V/m) and the average exposure level 3.578 (V/m). High-level exposure values unveil the necessity of imposing new recommendations and limits concerning stations site selection and reducing exposure levels in residential areas as low as possible.
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5783. Visual Data Mining: A Review
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| Deepa Boinwad, Santosh Khamitkar, Parag Bhalchandra and Satishkumar Mekewad |
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Abstract |
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Category : Computing and Informatics | Sub Category : Computer Engineering |
Visual Data Mining: A Review
Visual Data mining (VDM) is extensively used and being studied field of research area now a days. We surveyed in this paper the basic idea behind the visual data mining. How and why we have to classify the VDM techniques and corresponding classification criteria’s. We also presented some of its advantages.
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ZnO-ZnS composites for pollutant photo-degradation reactions: co-precipitation synthesis and characterization
Co-precipitation method was employed to synthesize the ZnO-ZnS nanocomposites with different ZnO:ZnS ratios. These prepared nanocomposites were characterized by X-ray diffraction (XRD), Scanning electron microscope (SEM), and Thermogravimetric analysis (TGA). The characterization results reveal that particles in all nanocomposites have similar size of about 30 nm. Zinc oxide may exist in the form of composite with ZnS and free from which can be seen in the XRD patterns. Though zinc oxide may exist in the different form, particles in all samples are relatively similar in size. The presence of ZnS in the composites can be seen clearly in the TGA curves.
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A comparative study on usage of Durov and Piper diagrams to interpret hydrochemical processes in groundwater from SRLIS river basin, Karnataka, India
In the present study, an attempt was made to evaluate and identify hydrogeochemistry of water and the involved chemical processes using Durov and Piper diagrams. The prominent hydrochemical facies was Ca2+-Mg2+-Cl--SO42- in both methods although slight variation in terms of Ca2+-Mg2+-HCO3- was also observed in few water samples. Piper diagrams indicated the dominance of mixed water type (70.84%) having no one cation-anion pair exceeds 50%, while Durov specified the dominance of simple dissolution or mixing (83.34 %) with no dominant major anion or cation. Thus, both the diagrams signify non-identification of the water types with neither anions dominant nor cations dominant. Piper diagram, Durov plot and chloroalkaline indices indicated the abundance and dominance of alkaline earth elements were over alkalies in majority of samples due to direct exchange of Ca2+ and Mg2+ from the Aquifer matrix with Na+ and K+ from the groundwater. Further, SAR (0.41>SAR< 2.78), percent sodium (7.3 > %Na < 42.4) and WQI (13.56 >WQI < 112.99) values recommended the suitability of 100, 91.67 and 62.5% of samples for domestic and irrigation purposes.
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A geometric process model for two different components of warm standby system with priority
In this paper, two different components and one repairman of with warm standby system priority is studied. Assume that two components of working time, standby time, the repair time after fault and the repair time after standby fault are subject to the different exponential distribution and the repair of the component 1 is geometry repair and the repair of the component 2 is as good as new. The component 1 has priority in use and repair. By using geometric process theory, the supplementary variable method and the Laplace transform, the reliability indices of the system are obtained.
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A new topology on bi-directional ZVS DC–DC converter with phase-shift plus PWM control scheme
A novel phase-shift plus pulse width modulation (PSP) control ZVS bidirectional dc–dc converter is proposed in this paper. By adopting active clamping branch ZVS condition is realized for all switches. The proposed converter has the advantage of wide range of input, output control and reduced switching losses. The performance of proposed converter is compared with the same power rated conventional topology and the results are presented.
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A one-step conversion of propane and butane gas-fraction into methanol
The present study investigates the oxidative-conversion of propane-butane (C3–C4) fraction to methanol via a proposed vapor–gas system: C3–C4 + O2 + h?/HN?3 ? 2??3?? + C2H4 + C3H6. Experiments were performed by feeding propane-butane fraction, oxygen, and nitric-acid into a photo-chemical reactor under mild conditions at a temperature of 100oC, an atmospheric pressure (P = 1 atm.), and under the influence of electromagnetic radiation using visible-light excitation at a wavelength ? = 420 nm, and at reaction-times (tr) between 2 – 120 minutes. The major oxidation-products are methanol, ethylene, and propylene. From this approach, methanol with 90 % selectivity can be achieved at a single-pass C3–C4 conversion level of 10 %. Quantum-chemical calculations for the oxidation reaction of C3–C4 by hydroxyl radical (via HN?3 photo-dissociation) were performed using the density functional theory (DFT) method at the B3LYP/6-311++G(3df,3pd) level, and the calculation-results are broadly consistent with the experimental data. In a strict sense, the applied technique herein for the oxidation of C3–C4 to methanol, and the valuable semi-products (alkene), as well as to enhances the regeneration of nitric-acid, apparently finds physico-chemical justification.
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A preliminary comparative study of indoor radon measurement in Sakumono and Kassena Nankana area of Ghana
A comparative indoor radon measurement by nuclear track detectors was undertaken in both Sakumono and Kassena Nankana area in sandcrete and Adobe houses respectively. In all, about seventy seven (77) detectors (type LR 115) were deployed for a period of three (3) months. The study was undertaken for the purpose of health risk assessments. The average indoor radon concentration in dwellings of Sakumono and its environs varied from 5.29 – 18.6 Bq/m3 but that of the Kassena Nankana Area varied from 35.3 and 244.2 Bq/m3. About 38% of the Adobe dwellings found in the Kassena Nankana Area had indoor radon concentration values that were above the action level of 150 Bqm3 recommended by the US EPA. The annual effective dose for the whole study varied from 0.15 to 3.05 mSv/y.
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A Role of E-Banking Products and Services in State Bank of India (with Special Reference to SBI Branches in Tiruchirapplli District)
The world of business technological advances and the speed with which new technologies are created and copied, the loss of geographical advantage resulting from globalization, the shake-up of traditional stable industries as a result of deregulation and the rising power of the consumer and their ability to get what they want, when they want it, from whomever they want. With this in mind, the relationshi8p experience becomes one of the greatest competitive aspects for a business’s survival. Now, that its customers are connecting to the Internet via personal computers, banks envision similar economic advantages by adapting those same internal electronic processes to home use. Today, most large national banks, many regional banks and even smaller banks offer some form of online banking, variously known as PC banking, home banking, electronic banking or Internet banking. Online banking or Internet banking is a term used for performing transactions, payments etc. over the Internet through a bank, credit union or building society's secure website. This allows customers to do their banking outside of bank hours and from anywhere where Internet access is available. This study deals with the E-Banking products and usages for the customers of SBI and their personal profile.
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