A method for the determination of two anionic dyes, Naphthol Yellow S (NYS) and Chromotrope 2B (C... more A method for the determination of two anionic dyes, Naphthol Yellow S (NYS) and Chromotrope 2B (CTB) in the presence of TBAB (Tetra butyl ammonium bromide) and Triton X-114 (Polyethylene glycol tert-octylphenyl ether) mixed micelles was developed by cloud point extraction pre-concentration technique. Good extraction efficiency was achieved for both NYS and CTB(85-92)% from their aqueous solutions by the optimization of pH of the solution, concentration of surfactants and salting out agent. Linearity was found to be in the range 1.5 – 30.0 μg mL-1for NYS and 1.86 – 27.2 μg mL-1 for CTB. The limit of detection was found to be in ngmL-1 range. Langmuir adsorption model was successfully applied to the phase separation process. The enthalpy, entropy and free energy change for solubilization of these dyes in surfactant phase were also determined. This method was then used to determine the dye concentration in the tap and sea water samples.
Department of Physical and Nuclear Chemistry & Chemical Oceanography, School of Chemistry, Andhra... more Department of Physical and Nuclear Chemistry & Chemical Oceanography, School of Chemistry, Andhra University, Visakhapatnam-530 003, Andhra Pradesh, India <em>E</em>-<em>mail:</em> shyamalapulipaka06@gmail.com Department of Chemistry, Government Degree College, Yeleswaram-533 429, East Godavari District, Andhra Pradesh, India <em>Manuscript received 09 May 2018, revised 29 May 2018, accepted 31 May 2018</em> A new cloud point extraction (CPE) procedure with spectrophotometry for the preconcentration and extraction of azocarmine G (ACG) has been developed using mixed micelles of Triton X-114 (TX-114) and Docusate sodium salt (DOSS) at a pH of 4.6. In this method the dye azocarmine G was extracted into the surfactant rich phase of mixed micelles of TX-114 and DOSS by heating the sample at 70ºC for 20 min. Various parameters effecting the extraction of dye like pH, concentration of TX-114, concentration of DOSS, equilibrium temperature and equilibriu...
Department of Physical and Nuclear Chemistry & Chemical Oceanography, School of Chemistry, Andhra... more Department of Physical and Nuclear Chemistry & Chemical Oceanography, School of Chemistry, Andhra University, Visakhapatnam-530 003, Andhra Pradesh, India E-mail : padma.rayudu86@gmail.com, shyamalapulipaka06@gmail.com Department of Chemistry, Govt. College (A), Rajahmundry-533 103, Andhra Pradesh, India E-mail : suneedavid@gmail.com Manuscript received online 26 October 2016, accepted 08 December 2016 The kinetics of fading of rosaniline hydrochloride (RA<sup>+</sup>) by periodate (IO<sub>4</sub><sup> </sup>– ) was studied in two different reverse micellar systems AOT/heptane and CTAB/CHCl<sub>3</sub> /hexane. The reaction between RA<sup>+ </sup>and IO<sub>4 </sub><sup>–</sup> obeys first order kinetics with respect to RA<sup>+</sup> and IO<sub>4</sub> <sup>–</sup> in both the reverse micellar media. In the AOT system, the pseudo-first order rate constant was foun...
A simple, rapid, accurate and precise stability indicating RP-HPLC method was developed for the d... more A simple, rapid, accurate and precise stability indicating RP-HPLC method was developed for the determination of gemifloxacin in pure and tablet dosage forms. Separation of the drug was achieved on a reverse phase Symmetry C18 column. The method showed a linear response for concentration in the range of 10–50 μg/ml using acetate buffer: methanol as the mobile phase in the ratio of 38:62 v/v with detection at 273 nm with a flow rate of 1 ml/min and retention time was 2.044 min. The method was statistically validated for accuracy, precision, linearity, ruggedness, robustness, forced degradation, solution stability and selectivity. Quantitative and recovery studies of the dosage form were also carried out and analyzed, the % RSD from recovery studies was found to be less than 1. Due to simplicity, rapidity and accuracy of the method, we believe that the method will be useful for routine quality control analysis of gemifloxacin in pharmaceutical formulation.
A new, simple, specific, sensitive, rapid, accurate and precise RP-HPLC method was developed for ... more A new, simple, specific, sensitive, rapid, accurate and precise RP-HPLC method was developed for the estimation of quetiapine in bulk and pharmaceutical formulations. Quetiapine was chromatographed on a reverse phase C18Waters column (75x4.6 mm I.D., particle size 3.5 μm) in a mobile phase consisting of phosphate buffer (pH 3.0 adjusted with orthophosphoric acid) and acetonitrile in the ratio 40:60 v/v. The mobile phase was pumped at a flow rate of 0.8 mL/min with detection at 291 nm. The detector response was linear in the concentration of 20-120 μg/mL. The limit of detection and limit of quantitation was found to be 0.2 and 0.75 μg/mL, respectively. The intra and inter day variation was found to be less than 1%. The mean recovery of the drug from the solution was 99%. The proposed method is simple, fast, accurate, precise and reproducible hence, it can be applied for routine quality control analysis of quetiapine in bulk and pharmaceutical formulations.
Internet is developing each day. One of the most important factors is to provide security for dat... more Internet is developing each day. One of the most important factors is to provide security for data in internet. In fact that there are numerous number of security algorithm were proposed at the same time hackers are also working with various technique and introduced so many new algorithm to break the security. DNA cryptography is one of the rising regions of computer science. In this paper we proposed a new technique to provide security for data using DNA cryptography. In this we use 256 DNA ASCII table instead of 64 lookup table and key is generated in random manner based on the length of the plaintext*4. In this proposed technique the original plaintext and key was divided into 4 equal parts. The proposed algorithm produces better results when compared to other existing algorithm in terms of encryption and decryption times.
Advances in Intelligent Systems and Computing, 2021
Cloud computing is one of the prominent dynamic term, which provide different services for the us... more Cloud computing is one of the prominent dynamic term, which provide different services for the user and also prevent the user from burdens of local storage issues. Security is one of the biggest issues and offers new challenges to researchers for protecting the data from unreliable services to provide the solution for this issues number of ways. This paper concentrates on the security with the help of steganography before storing into the cloud environment. In this proposed method, the data is hidden into the image and that image is stored into the cloud space. For this use, LSB steganography has been proposed by considering LSB and MSB pixels for hiding and retrieval of the data which is an improvised version of one bit LSB technique. The effectiveness of the proposed method has been estimated by computing mean square error (MSE) and peak signal to noise ratio (PSNR).
International Journal of Recent Technology and Engineering (IJRTE), 2019
Data security is a one of the challenging issue in present scenario. In that one of the on demand... more Data security is a one of the challenging issue in present scenario. In that one of the on demand service is cloud computing and it provides so many services for end users and also it provides a dynamic environment for end user to provide quality of services on data it leads to improve in the confidentiality of the data. The proposed work presents a new cloud data security model with the help of Artificial Neural Network. It improves the confidentiality and security in cloud environment. This proposed algorithm is implemented using dynamic hashing fragmented component. It is implemented for storing fragmented sensitive secret data. The neural network cryptographic proposed algorithm is used for data to deal with encryption process for secret and improve the confidentiality. This algorithm applied for various number of cloud databases and it shows high confidentiality on data security.
A simple, rapid, sensitive, reproducible and precise high performance liquid chromatographic meth... more A simple, rapid, sensitive, reproducible and precise high performance liquid chromatographic method has been developed for the estimation of rosuvastatin in pure form as well as in pharmaceutical dosage form. In this method, RP-C 18 column (100 mm x 4.6 mm I.D., 3 µm particle size) with mobile phase consisting of 0.02M phosphate buffer pH 6.8 and acetonitrile in the ratio of 60 : 40 v/v in isocratic mode was used. The detection wavelength is 242 nm and the flow rate 0.6 mL/min. The linearity was found in the range of 20-100 g/mL and shows a correlation coefficient of 0.994. The retention time of the drug was 3.424. The proposed method was validated by determining sensitivity, accuracy, precision and linearity. The proposed method is simple, fast, accurate, precise and reproducible and hence, it can be applied for routine quality control analysis of rosuvastatin in pure and tablet dosage form.
International Journal of Engineering and Advanced Technology, 2020
Steganography is one expanding filed in the area of Data Security. Steganography has attractive n... more Steganography is one expanding filed in the area of Data Security. Steganography has attractive number of application from a vast number of researchers. The most existing technique in steganogarphy is Least Significant Bit (LSB) encoding. Now a day there has been so many new approaches employing with different techniques like deep learning. Those techniques are used to address the problems of steganography. Now a day’s many of the exisiting algorithms are based on the image to data, image to image steganography. In this paper we hide secret audio into the digital image with the help of deep learning techniques. We use a joint deep neural network concept it consist of two sub models. The first model is responsible for hiding digital audio into a digital image. The second model is responsible for returning a digital audio from the stego image. Various vast experiments are conducted with a set of 24K images and also for various sizes of images. From the experiments it can be seen propo...
Advances in Intelligent Systems and Computing, 2018
Now days storage of data in cloud plays a vital role in any place but data security for cloud env... more Now days storage of data in cloud plays a vital role in any place but data security for cloud environment is a major problem now a days because the data is maintained and its is organized by third party from different locations of different places. Before storing the data in the cloud environment the user must and should give security from unauthorized access. So in this paper we proposed new algorithm to secure user data by using image Steganography and image Segmentation. In this the data is hidden different segments of image by using image segmentation. The performance of proposed algorithm is evaluated by considering various parameters like PSNR, MSE values and the results are compared with various existing algorithms for various sizes of images.
Data security is a major issue in computer science and information technology. In the cloud compu... more Data security is a major issue in computer science and information technology. In the cloud computing environment, it is a serious issue because data is located in different places. In the cloud, environment data is maintained by the third party so it is harder to maintain security for user’s data. There is a prominent need for security for cloud data, so we proposed an approach which provides better results as compared to previous approaches. In this work, we tried to secure the data by using image steganography partition random edge-based technique. In the next step, partition the original image into a number of parts, apply edge-based algorithms, select random pixels (prime number-based pixels) from each part, and insert the data into them. The performance of this proposed analysis is calculated by using MSE and PSNR values. Results are good as compared to several existing edge-based algorithms of image steganography.
Data Compression in Cryptography is one of the interesting research topic. The compression proces... more Data Compression in Cryptography is one of the interesting research topic. The compression process reduces the amount of transferring data as well as storage space which in turn effects the usage of bandwidth. Further, when a plain text is converted to cipher text, the length of the cipher text becomes large. This adds up to tremendous information storing. It is extremely important to address the storage capacity issue along with the security issues of exponentially developing information. This problem can be resolved by compressing the ciphertext based on a some compression algorithm. In this proposed work used the compression technique called palindrome compression technique. The compression ratio of the proposed method is better than the standard method for both colored and gray scaled images. An experimental result for the proposed methods is better than existing methods for different types of image.
A method for the determination of two anionic dyes, Naphthol Yellow S (NYS) and Chromotrope 2B (C... more A method for the determination of two anionic dyes, Naphthol Yellow S (NYS) and Chromotrope 2B (CTB) in the presence of TBAB (Tetra butyl ammonium bromide) and Triton X-114 (Polyethylene glycol tert-octylphenyl ether) mixed micelles was developed by cloud point extraction pre-concentration technique. Good extraction efficiency was achieved for both NYS and CTB(85-92)% from their aqueous solutions by the optimization of pH of the solution, concentration of surfactants and salting out agent. Linearity was found to be in the range 1.5 – 30.0 μg mL-1for NYS and 1.86 – 27.2 μg mL-1 for CTB. The limit of detection was found to be in ngmL-1 range. Langmuir adsorption model was successfully applied to the phase separation process. The enthalpy, entropy and free energy change for solubilization of these dyes in surfactant phase were also determined. This method was then used to determine the dye concentration in the tap and sea water samples.
Department of Physical and Nuclear Chemistry & Chemical Oceanography, School of Chemistry, Andhra... more Department of Physical and Nuclear Chemistry & Chemical Oceanography, School of Chemistry, Andhra University, Visakhapatnam-530 003, Andhra Pradesh, India <em>E</em>-<em>mail:</em> shyamalapulipaka06@gmail.com Department of Chemistry, Government Degree College, Yeleswaram-533 429, East Godavari District, Andhra Pradesh, India <em>Manuscript received 09 May 2018, revised 29 May 2018, accepted 31 May 2018</em> A new cloud point extraction (CPE) procedure with spectrophotometry for the preconcentration and extraction of azocarmine G (ACG) has been developed using mixed micelles of Triton X-114 (TX-114) and Docusate sodium salt (DOSS) at a pH of 4.6. In this method the dye azocarmine G was extracted into the surfactant rich phase of mixed micelles of TX-114 and DOSS by heating the sample at 70ºC for 20 min. Various parameters effecting the extraction of dye like pH, concentration of TX-114, concentration of DOSS, equilibrium temperature and equilibriu...
Department of Physical and Nuclear Chemistry & Chemical Oceanography, School of Chemistry, Andhra... more Department of Physical and Nuclear Chemistry & Chemical Oceanography, School of Chemistry, Andhra University, Visakhapatnam-530 003, Andhra Pradesh, India E-mail : padma.rayudu86@gmail.com, shyamalapulipaka06@gmail.com Department of Chemistry, Govt. College (A), Rajahmundry-533 103, Andhra Pradesh, India E-mail : suneedavid@gmail.com Manuscript received online 26 October 2016, accepted 08 December 2016 The kinetics of fading of rosaniline hydrochloride (RA<sup>+</sup>) by periodate (IO<sub>4</sub><sup> </sup>– ) was studied in two different reverse micellar systems AOT/heptane and CTAB/CHCl<sub>3</sub> /hexane. The reaction between RA<sup>+ </sup>and IO<sub>4 </sub><sup>–</sup> obeys first order kinetics with respect to RA<sup>+</sup> and IO<sub>4</sub> <sup>–</sup> in both the reverse micellar media. In the AOT system, the pseudo-first order rate constant was foun...
A simple, rapid, accurate and precise stability indicating RP-HPLC method was developed for the d... more A simple, rapid, accurate and precise stability indicating RP-HPLC method was developed for the determination of gemifloxacin in pure and tablet dosage forms. Separation of the drug was achieved on a reverse phase Symmetry C18 column. The method showed a linear response for concentration in the range of 10–50 μg/ml using acetate buffer: methanol as the mobile phase in the ratio of 38:62 v/v with detection at 273 nm with a flow rate of 1 ml/min and retention time was 2.044 min. The method was statistically validated for accuracy, precision, linearity, ruggedness, robustness, forced degradation, solution stability and selectivity. Quantitative and recovery studies of the dosage form were also carried out and analyzed, the % RSD from recovery studies was found to be less than 1. Due to simplicity, rapidity and accuracy of the method, we believe that the method will be useful for routine quality control analysis of gemifloxacin in pharmaceutical formulation.
A new, simple, specific, sensitive, rapid, accurate and precise RP-HPLC method was developed for ... more A new, simple, specific, sensitive, rapid, accurate and precise RP-HPLC method was developed for the estimation of quetiapine in bulk and pharmaceutical formulations. Quetiapine was chromatographed on a reverse phase C18Waters column (75x4.6 mm I.D., particle size 3.5 μm) in a mobile phase consisting of phosphate buffer (pH 3.0 adjusted with orthophosphoric acid) and acetonitrile in the ratio 40:60 v/v. The mobile phase was pumped at a flow rate of 0.8 mL/min with detection at 291 nm. The detector response was linear in the concentration of 20-120 μg/mL. The limit of detection and limit of quantitation was found to be 0.2 and 0.75 μg/mL, respectively. The intra and inter day variation was found to be less than 1%. The mean recovery of the drug from the solution was 99%. The proposed method is simple, fast, accurate, precise and reproducible hence, it can be applied for routine quality control analysis of quetiapine in bulk and pharmaceutical formulations.
Internet is developing each day. One of the most important factors is to provide security for dat... more Internet is developing each day. One of the most important factors is to provide security for data in internet. In fact that there are numerous number of security algorithm were proposed at the same time hackers are also working with various technique and introduced so many new algorithm to break the security. DNA cryptography is one of the rising regions of computer science. In this paper we proposed a new technique to provide security for data using DNA cryptography. In this we use 256 DNA ASCII table instead of 64 lookup table and key is generated in random manner based on the length of the plaintext*4. In this proposed technique the original plaintext and key was divided into 4 equal parts. The proposed algorithm produces better results when compared to other existing algorithm in terms of encryption and decryption times.
Advances in Intelligent Systems and Computing, 2021
Cloud computing is one of the prominent dynamic term, which provide different services for the us... more Cloud computing is one of the prominent dynamic term, which provide different services for the user and also prevent the user from burdens of local storage issues. Security is one of the biggest issues and offers new challenges to researchers for protecting the data from unreliable services to provide the solution for this issues number of ways. This paper concentrates on the security with the help of steganography before storing into the cloud environment. In this proposed method, the data is hidden into the image and that image is stored into the cloud space. For this use, LSB steganography has been proposed by considering LSB and MSB pixels for hiding and retrieval of the data which is an improvised version of one bit LSB technique. The effectiveness of the proposed method has been estimated by computing mean square error (MSE) and peak signal to noise ratio (PSNR).
International Journal of Recent Technology and Engineering (IJRTE), 2019
Data security is a one of the challenging issue in present scenario. In that one of the on demand... more Data security is a one of the challenging issue in present scenario. In that one of the on demand service is cloud computing and it provides so many services for end users and also it provides a dynamic environment for end user to provide quality of services on data it leads to improve in the confidentiality of the data. The proposed work presents a new cloud data security model with the help of Artificial Neural Network. It improves the confidentiality and security in cloud environment. This proposed algorithm is implemented using dynamic hashing fragmented component. It is implemented for storing fragmented sensitive secret data. The neural network cryptographic proposed algorithm is used for data to deal with encryption process for secret and improve the confidentiality. This algorithm applied for various number of cloud databases and it shows high confidentiality on data security.
A simple, rapid, sensitive, reproducible and precise high performance liquid chromatographic meth... more A simple, rapid, sensitive, reproducible and precise high performance liquid chromatographic method has been developed for the estimation of rosuvastatin in pure form as well as in pharmaceutical dosage form. In this method, RP-C 18 column (100 mm x 4.6 mm I.D., 3 µm particle size) with mobile phase consisting of 0.02M phosphate buffer pH 6.8 and acetonitrile in the ratio of 60 : 40 v/v in isocratic mode was used. The detection wavelength is 242 nm and the flow rate 0.6 mL/min. The linearity was found in the range of 20-100 g/mL and shows a correlation coefficient of 0.994. The retention time of the drug was 3.424. The proposed method was validated by determining sensitivity, accuracy, precision and linearity. The proposed method is simple, fast, accurate, precise and reproducible and hence, it can be applied for routine quality control analysis of rosuvastatin in pure and tablet dosage form.
International Journal of Engineering and Advanced Technology, 2020
Steganography is one expanding filed in the area of Data Security. Steganography has attractive n... more Steganography is one expanding filed in the area of Data Security. Steganography has attractive number of application from a vast number of researchers. The most existing technique in steganogarphy is Least Significant Bit (LSB) encoding. Now a day there has been so many new approaches employing with different techniques like deep learning. Those techniques are used to address the problems of steganography. Now a day’s many of the exisiting algorithms are based on the image to data, image to image steganography. In this paper we hide secret audio into the digital image with the help of deep learning techniques. We use a joint deep neural network concept it consist of two sub models. The first model is responsible for hiding digital audio into a digital image. The second model is responsible for returning a digital audio from the stego image. Various vast experiments are conducted with a set of 24K images and also for various sizes of images. From the experiments it can be seen propo...
Advances in Intelligent Systems and Computing, 2018
Now days storage of data in cloud plays a vital role in any place but data security for cloud env... more Now days storage of data in cloud plays a vital role in any place but data security for cloud environment is a major problem now a days because the data is maintained and its is organized by third party from different locations of different places. Before storing the data in the cloud environment the user must and should give security from unauthorized access. So in this paper we proposed new algorithm to secure user data by using image Steganography and image Segmentation. In this the data is hidden different segments of image by using image segmentation. The performance of proposed algorithm is evaluated by considering various parameters like PSNR, MSE values and the results are compared with various existing algorithms for various sizes of images.
Data security is a major issue in computer science and information technology. In the cloud compu... more Data security is a major issue in computer science and information technology. In the cloud computing environment, it is a serious issue because data is located in different places. In the cloud, environment data is maintained by the third party so it is harder to maintain security for user’s data. There is a prominent need for security for cloud data, so we proposed an approach which provides better results as compared to previous approaches. In this work, we tried to secure the data by using image steganography partition random edge-based technique. In the next step, partition the original image into a number of parts, apply edge-based algorithms, select random pixels (prime number-based pixels) from each part, and insert the data into them. The performance of this proposed analysis is calculated by using MSE and PSNR values. Results are good as compared to several existing edge-based algorithms of image steganography.
Data Compression in Cryptography is one of the interesting research topic. The compression proces... more Data Compression in Cryptography is one of the interesting research topic. The compression process reduces the amount of transferring data as well as storage space which in turn effects the usage of bandwidth. Further, when a plain text is converted to cipher text, the length of the cipher text becomes large. This adds up to tremendous information storing. It is extremely important to address the storage capacity issue along with the security issues of exponentially developing information. This problem can be resolved by compressing the ciphertext based on a some compression algorithm. In this proposed work used the compression technique called palindrome compression technique. The compression ratio of the proposed method is better than the standard method for both colored and gray scaled images. An experimental result for the proposed methods is better than existing methods for different types of image.
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