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Search Results: 1 - 10 of 1216 matches for " Babita Sarma "
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Synthesis, Spectroscopy, Thermal Analysis, Electrochemistry and Superoxide Scavenging Activity of a New Bimetallic Copper(II) Complex
Babita Sarma,Diganta Kumar Das
Journal of Chemistry , 2013, DOI: 10.1155/2013/349580
Modeling of the Dissolved Oxygen in a River with Storage Zone on the Banks  [PDF]
Nitash Kaushik, Babita Tyagi, Girija Jayaraman
Applied Mathematics (AM) , 2012, DOI: 10.4236/am.2012.37103
Abstract: The prediction of water quality in terms of variables like dissolved oxygen (DO), biochemical oxygen demand (BOD), pH value, total dissolved solids (TDS) and salinity etc. is useful for evaluating the use of water for various related purposes. The widely used Streeter and Phelps models for computing biochemical oxygen demand and its impact on dissolved oxygen do not account for the settleable component of BOD and related implications. The model also does not account for the impact of storage zone on the stream’s DO. In the present work an attempt is made to develop a model which simultaneously accounts for the settleable component of BOD and the effect of storage zones onriver’s DO. An application of the model to real field data suggests that the cumulative impact of settleable BOD and presence of storage zone in the river is to shift the critical deficit closer to the point source and magnify its amount.
Segmented-Core Single Mode Optical Fiber with Ultra-Large-Effective-Area, Low Dispersion Slope and Flattened Dispersion for Dwdm Optical Communication Systems
Babita Hooda;Vipul Rastogi
PIER B , 2013,
Abstract: In this paper we present designs of fibers having non-zero positive, non-zero negative and near-zero ultra-flattened dispersion with small dispersion slope and ultra-large effective area over a wide spectral range. The designs consist of a concentric multilayer segmented core followed by a trench assisted cladding and a thin secondary core. The central segmented core helps in maintaining desired dispersion over a wide range of wavelength. The second core of the fiber helps in achieving ultra-large effective area and trench assisted cladding reduces the bending loss. The designs of the fiber have been analyzed by using the transfer matrix method. For positive non-zero dispersion flattened fiber we have optimized dispersion near +4.5 ps/km/nm in the wavelength range 1.46-1.65 μm. Maximum value of dispersion slope of the fiber in above mentioned wavelength range is 0.026 ps/km/nm. In the design of negative non-zero dispersion flattened fiber, dispersion has been achieved near -6 ps/km/nm in the spectral range of 1.33-1.56 μm and maximum value of dispersion slope is 0.048 ps/km/nm. Dispersion and dispersion slope of near zero dispersion flattened fiber lie in the range [0.0039-0.520] ps/km/nm and [(0.0004)-(0.0365)] ps/km/nm respectively in the spectral range of 1.460-1.625 μm. The near zero dispersion flattened fiber has an ultra-high effective area ranging from 114 μm to 325.95 μm in the aforementioned wavelength range, which covers the entire S+C+L-band. These values of mode area are noticeably higher than those reported in literature for flattened dispersion fibers with large mode area. Designed fiber show very small bending loss. We report breakthrough in the mode area of the single mode optical fiber with ultra flattened dispersion and low dispersion slope.
Babita A. Saiyed
Indian Streams Research Journal , 2012,
Abstract: Cadmium Oxalate Single crystal grown using well known technique of crystal growth i.e gel technique. The grown crystal characterized using an electro-analytical technique named polarogaphy. A well known method of standard comparison method was used under this study. Using the standard electrolyte KCl the sample was compared and obtained the values of id/2 value. The distance between the starting of the residual current and the point of half diffusion gives the half wave potential value as 0.645 V, which is compared to the standard value of half wave potential of Cd2+ in 1M KCl as supporting electrolyte as 0.64 V, both are in good agreement.
Topography and Land Temperature Investigation Using Arc GIS 10
Babita Pal,Sailesh Samanta
International Journal of Basics and Applied Science , 2012,
Abstract: The paper seeks an empirical methodology for modeling and mapping of the topography using remote sensing (RS) and geographic information systems (GIS) techniques. Firstly this paper examines the mathematical approaches for different surface analysis like contour, hill-shade, slope, aspect and cut/fill analysis. View-shade analysis was also performed which have a large application on mobile telecommunication in the hilly region. Secondly this paper examines statistical approaches for monitoring surface using LANDSAT-7 ETM+ satellite data, which has wide range of electromagnetic wavelength band, including visible, infrared and thermal bands. Its thermal bands (band 6.1 and 6.2) can detect thermal radiation released from objects on the earth surface. This study has been conducted to develop surface temperature (ST) using 3 sets of algorithm from LANDSAT-7 ETM+. Finally modeled land surface temperature data set was overlaid on digital elevation model (DEM) to find out the relation of surface temperature with variation of altitude of the study area.
Event Sequence Analysis using Self Organizing Map
Dharmendra Kaushik,Babita Kubde
International Journal of Computer Technology and Applications , 2012,
Abstract: In today’s world we have abundance of data and scarcity of Knowledge data mining field emerged as the fit of thetool to the problem. With the advent of internet technology and the exponential growth in the technology behind theworld wide web, the concept of web mining and found a place for itself and emerged as a separate field of research.Web mining involves a wide range of applications that aim at discovering and extracting hidden information in datastored on the Web. Web log analysis is an innovative and unique field constantly formed and changed by theconvergence of various emerging Web technologies. Due to its interdisciplinary character, the diversity of issues itaddresses, and the variety and number of Web applications, it is the subject of many distinctive and diverse researchmethodologies. This chapter examines research methodologies used by contributing authors in preparing theindividual chapters for this handbook, summarizes research results, and proposes new directions for future researchin this area.
International Journal on Computer Science and Engineering , 2012,
Abstract: In this era of digital tsunami of information on the web, everyone is completely dependent on the WWW for information retrieval. This has posed a challenging problem in extracting relevant data. Traditional web crawlers focus only on the surface web while the deep web keeps expanding behind the scene. The web databases are hidden behind the query interfaces. In this paper, we propose a Hidden Web Extractor (HWE) that can automatically discover and download data from the Hidden Web databases. Since the only “entry point” to a Hidden Web site is a query interface, the main challenge that a Hidden WebExtractor has to face is how to automatically generate meaningful queries for the unlimited number of website pages.
Processing Effect on Phytic Acid and Inorganic Phosphorus Content of Soybean (Glycine max, Brown var.)
Somkanta Rijal,Babita Adhikari
Journal of Food Science and Technology Nepal , 2012, DOI: 10.3126/jfstn.v7i0.11208
Abstract: The objective of this research was to study the effect of some processing methods on phytic acid (a prominent anti-nutritive substance) and inorganic phosphorous content of the king legume soybean. The processing treatments viz. soaking and subsequent germination; kinema fermentation and heating were applied. It was observed that soaking for 12 hrs at room temperature under citric acid solution, distilled water and sodium bicarbonate solution significantly (p <0.05) lowered the phytic acid content of soybean by 7.99%, 6.38% and 7.20% respectively and also correspondingly lowered the inorganic phosphorous by 21.8%, 27.55% and 30.75% . Maximum destruction of phytic acid (35.1% reduction) occurred during germination for 120 hrs in 0.1% citric acid solution. This was further confirmed by increase of inorganic phosphorous content (196.22%) in corresponding treatments. A 46.07% significant reduction (p < 0.05) of phytic acid content over the control was noticed after 72 hrs of kinema fermentation. On the same interval, inorganic phosphorous content also significantly increased by 180%. Autoclaving was found more effective than dry heating and boiling also could reduce the phytic acid content of soybean. Autoclaving (121oC for 15 min), dry heating (200oC for 5 min) and boiling (100oC for 30 min) significantly lowered (p< 0.05) soybean phytate by 20.76%, 12.84% and 14.84% respectively. In other hand, inorganic phosphorous content were increased significantly by 80.56%, 43.8% and 63.55% at the same time. DOI: http://dx.doi.org/10.3126/jfstn.v7i0.11208 ? J. Food Sci. Technol. Nepal, Vol. 7 (102-106), 2012
Central Forests in Trees
Shrisha Rao,Babita Grover
Mathematics , 2008,
Abstract: A new 2-parameter family of central structures in trees, called central forests, is introduced. Minieka's $m$-center problem and McMorris's and Reid's central-$k$-tree can be seen as special cases of central forests in trees. A central forest is defined as a forest $F$ of $m$ subtrees of a tree $T$, where each subtree has $k$ nodes, which minimizes the maximum distance between nodes not in $F$ and those in $F$. An $O(n(m+k))$ algorithm to construct such a central forest in trees is presented, where $n$ is the number of nodes in the tree. The algorithm either returns with a central forest, or with the largest $k$ for which a central forest of $m$ subtrees is possible. Some of the elementary properties of central forests are also studied.
Performance Comparison of a QoS Aware Routing Protocol for Wireless Sensor Networks  [PDF]
Bhaskar Bhuyan, Nityananda Sarma
Communications and Network (CN) , 2016, DOI: 10.4236/cn.2016.81006
Abstract: Quality of Service (QoS) in Wireless Sensor Networks (WSNs) is a challenging area of research because of the limited availability of resources in WSNs. The resources in WSNs are processing power, memory, bandwidth, energy, communication capacity, etc. Delay is an important QoS parameter for delivery of delay sensitive data in a time constraint sensor network environment. In this paper, an extended version of a delay aware routing protocol for WSNs is presented along with its performance comparison with different deployment scenarios of sensor nodes, taking IEEE802.15.4 as the underlying MAC protocol. The performance evaluation of the protocol is done by simulation using ns-2 simulator.
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