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Search Results: 1 - 10 of 118035 matches for " T.Smitha "
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Kinetics And Isotherm Studies On Cationic Dyes Adsorption Onto Annona Squmosa Seed Activated Carbon
T. Santhi,S. Manonmani,T.Smitha
International Journal of Engineering Science and Technology , 2010,
Abstract: The use of low - cost, locally available and eco-friendly adsorbents has been investigated as an ideal alternative to the current expensive methods of removing dyes from wastewater. This study investigates the potential use of activated carbon prepared from the Annona squmosa seed for the removal of methylene blue (MB) , methyl red (MR) and malachite green (MG) dyes from simulated wastewater. Adsorption of MB, MR and MG dyes on the Annona squmosa seed showed highest values at around pH 7.0, and followed second –order kinetic with intraparticle diffusion as one of the rate determining steps. The adsorption-equilibrium was represented with Langmuir, Freundlich, Dubinin-Radushekevich and Tempkin isotherms. Activated carbon developed from the Annona squmosa seed can be an attractive option for dyes removal from diluted industrial effluents.
COMPARATIVE STUDY OF DATA MINING ALGORITHMS FOR HIGH DIMENSIONAL DATA ANALYSIS
Smitha .T,V. Sundaram
International Journal of Advances in Engineering and Technology , 2012,
Abstract: The main objective of this research paper is to prove the effectiveness of high dimensional data analysis and different algorithm in the prediction process of Data mining. The approach made for this survey includes , an extensive literature search on published papers as well as text books in the application of Data mining in prediction. Many data tables were searched for this purpose and research was conducted during JAN 2009 -2012 and I have retrieved many published articles on the usage of Data mining algorithm in prediction. I have retrieved those articles by searching the data bases with the usage of the keywords “data mining and algorithm”. Titles of the articles were analyzed by usage of association rules that analyze the most frequently used words. The main algorithm which were includes in this survey are decision tree, k-means algorithm ,and association rules. I have Studied each algorithm with the help of high dimensional data set with UCI repository and find the advantages and disadvantages of each and made a comparative result for this.
Plasma in dentistry: an update
Smitha T,Chaitanya Babu N
Indian Journal of Dental Advancements , 2010,
Abstract: This introductory review on plasma in dentistry is intended to provide with a summary of the current status of this emerging field, its scope, and its broad interdisciplinary approach. When most people think about matter, they think of liquids, solids, and gases. But, there's a fourth category of matter called plasma that's actually the most unusual and the most abundant. It's the stuff of stars, galaxies, and even the northern lights, and it could become a new and painless way to prepare cavities for filling with improved longevity. The plasma is capable of bacterial inactivation and non inflammatory tissue modification, which makes it an attractive tool for the treatment of dental caries and for composite restorations. From "distant stars to dental chairs" plasmas may promise painfree caries removal and durable restorations. The field is young and hopes are high and this review focuses on some of the recent studies related to it.
Removal of methyl red from aqueous solution by activated carbon prepared from the Annona squmosa seed by adsorption
T Santhi,S. Manonmani,T. Smitha
Chemical Engineering Research Bulletin , 2010, DOI: 10.3329/cerb.v14i1.3767
Abstract: The use of low-cost, locally available, highly efficiencient and eco-friendly adsorbents has been investigated as an ideal alternative to the current expensive methods of removing dyes from wastewater. This study investigates the potential use of activated carbon prepared from the Annona squmosaseed for the removal of methyl red (MR) dye from simulated wastewater. The effects of different system variables, adsorbent dosage, initial dye concentration, pH and contact time were investigated and optimal experimental conditions were ascertained. The results showed that as the amount of the adsorbent increased, the percentage of dye removal increased accordingly. Optimum pH value for dye adsorption was 7.0. Maximum dye was sequestered within 50 min of the start of every experiment. The adsorption of methylene blue followed the pseudo-second –order rate equation and fits the Langmuir, Freundlich, Dubinin-Radushekevich (D-R) and Tempkin equations well. The maximum removal of MR was obtained at pH 7 as 82.81% for adsorbent dose of 0.2 g/ 50 mL and 25 mg L -1 initial dye concentration at room temperature. Furthermore, adsorption kinetics of MR was studied and the rate of adsorption was found to conform to pseudo-second –order kinetics with a good correlation (R2 > 0.99) with intraparticle diffusion as one of the rate determining steps. Activated carbon developed from the Annona squmosa seed can be an attractive option for dye removal from diluted industrial effluents since test reaction made on simulated dyeing wastewater showed better removal percentage of MR. Keywords: Annona squmosa, Adsorption, Wastewater, Methyl red, Kinetics, Activated carbon DOI = 10.3329/cerb.v14i1.3767 Chemical Engineering Research Bulletin 14 (2010) 11-18
Equilibrium and Kinetics Study of Adsorption of Crystal Violet onto the Peel of Cucumis sativa Fruit from Aqueous Solution
T. Smitha,S. Thirumalisamy,S. Manonmani
Journal of Chemistry , 2012, DOI: 10.1155/2012/457632
Abstract: The use of low-cost, locally available, high efficiency and eco-friendly adsorbents has been investigated as an ideal alternative to the current expensive methods of removing dyes from wastewater. This study investigates the potential use of the peel of Cucumis sativa fruit for the removal of crystal violet (CV) dye from simulated wastewater. The effects of different system variables, adsorbent dosage, initial dye concentration, pH and contact time were investigated and optimal experimental conditions were ascertained. The results showed that as the amount of the adsorbent increased, the percentage of dye removal increased accordingly. Optimum pH value for dye adsorption was determined as 7.0. The adsorption of crystal violet followed pseudo-second order rate equation and fit well Langmuir and Freundlich equations. The maximum removal of CV was obtained at pH 7 as 92.15% for adsorbent dose of 0.2 g/50 mL and 25 mg L-1 initial dye concentration at room temperature. The maximum adsorption capacity obtained from Langmuir equation was 34.24 mg g-1. Furthermore, adsorption kinetics of (CV) was studied and the rate of adsorption was found to conform to pseudo-second order kinetics with a good correlation (R2 > 0.9739). The peel of Cucumis sativa fruit can be attractive options for dye removal from diluted industrial effluents since test reaction made on simulated dyeing wastewater show better removal percentage of (CV).
ASSOCIATION MODELS FOR PREDICTION WITH APRIORI CONCEPT
Smitha.T,V.Sundaram
International Journal of Advances in Engineering and Technology , 2012,
Abstract: Data mining techniques have led over various methods to gain knowledge from vast amount of data. So different research tools and techniques like classification algorithm, decision tree, association rules etc are available for bulk amount of data. Association rules are mainly used in mining transaction data to find interesting relationship between attribute values and also it is a main topic of data mining There is a a great challenge in candidate generation for large data with low support threshold. Through this paper we are making a study to show how association rules will be effective with the dense data and low support threshold. The data set which we have used in this paper is real time data of certain area and we are applying the data set in association rules to predict the chance of disease hit in that area using A Priori Algorithm. In this paper three different sets of rules are generated with the dataset and applied the apriori algorithm with it. With the algorithm, found the relation between the parameters in the database.
Case Study on High Dimensional Data Analysis Using Decision Tree Model
Smitha.T,V.Sundaram
International Journal of Computer Science Issues , 2012,
Abstract: The major aspire of this paper is to build a model to predict the chances of occurrences of disease in an area. This paper mainly concentrating the data mining technique-Decision tree model to identify the significant parameters for prediction process. The decision tree model created with the help of ID3 algorithm.
UPTAKE OF CATIONIC DYES FROM AQUEOUS SOLUTION BY BIOADSORPTION ONTO GRANULAR CUCUMIS SATIVA
T. SANTHI,S. MANONMANI,T. SMITHA,D. SUGIRTHA
Journal of Applied Sciences in Environmental Sanitation , 2009,
Abstract: A new, low cost, locally available biomaterial was tested for its ability to remove cationic dyes from aqueous solution. A granule prepared from a fruit peel of Cucumis sativa had been utilized as a adsorbent for uptake of three cationic dyes, methylene blue (MB), methyl red (MR) and malachite green (MG). The effects of various experimental parameters (e.g., contact time, dye concentration, adsorbent dose, particle size and pH) were investigated and optimal experimental conditions were ascertained. Above the value of initial pH 6, three dyes studied could be removed effectively. The sorption isotherms of MR followed the Langmuir and Freundlich models, but the sorption isotherms of MB and MG only fitted the Freundlich model of adsorption. The bioadsorption processes followed the Pseudo –first order rate kinetics. The results in this study indicated that fruit peel of Cucumis sativa was an attractive candidate for removing cationic dyes from the dye wastewater.
ADSORPTION KINETICS OF CATIONIC DYES FROM AQUEOUS SOLUTION BY BIOADSORPTION ONTO ACTIVATED CARBON PREPARED FROM CUCUMIS SATIVA
T. SANTHI,S. MANONMANI,T. SMITHA,K. MAHALAKSHMI
Journal of Applied Sciences in Environmental Sanitation , 2009,
Abstract: The use of low - cost, locally available, highly efficiencient and eco-friendly adsorbents has been investigated as an ideal alternative to the current expensive methods of removing dyes from wastewater. This study investigates the potential use of activated carbon prepared from the peel of Cucumis Sativa fruit (CCS) for the removal of methylene blue (MB), methyl red (MR) and malachite green (MG) dye from simulated wastewater. The effects of different system variables, adsorbent dosage, initial dye concentration, pH and contact time were investigated and optimal experimental conditions were ascertained. The results showed that as the amount of the adsorbent increased, the percentage of dye removal increased accordingly. Optimum pH value for dye adsorption was 6.0 for all the three dyes. Maximum dye was sequestered within 50 min of the start of every experiment. The adsorption of dyes followed the pseudo-second –order rate equation and fits the Langmuir and Freundlich equations well.
A Study of an antipsychotic prescription pattern of patients with schizophrenia in a developing country
Ramadas Smitha,Kuttichira Praveenlal,Sumesh T,Ummer Shijin
Indian Journal of Psychological Medicine , 2010,
Abstract: Background: Though there are several recommended guidelines for treating schizophrenia, in routine clinical practice, these are not followed. Aim: To conduct an audit of the prescription pattern of antipsychotic drugs in patients with schizophrenia, in a tertiary care centre in India, during a period of 1 year and compare it with Maudsley guidelines and Clinical practice guidelines for Psychiatrists in India (IPS guidelines). Materials and Methods: Data were collected from the case records, compiled, and analyzed. The concordance or discordance with Maudsley and IPS guidelines were studied. Results: The demographic variables of the patients and the prescription pattern of drugs were analyzed. The correlations between supramaximal and sub-threshold dosage of drugs to the gender, age, duration of illness, and combination of drugs were examined. Conclusions: Polypharmacy of antipsychotics is common. 31% of patients were on combination of typical and atypical antipsychotics. 4% of patients were receiving supramaximal dose of antipsychotics and all of them were on combination (P =<0.03, x2 ). 24% of patients were on sub-threshold doses. 83% were not on anticholinergic drugs.
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