bluuebunny/crossref_metadata_2025 huggingface dataset:
Page Segmentation using XY Cut Algorithm in OCR Systems - A Review
Authors: Kaur Sukhvir , Mann P.S. , Kaur Sukhwinder
Published: May 2018

Page segmentation is an important field to analyse patterns from the OCR Systems. In this paper we tried to present how page segmentation is done on the OCR systems. We discussed the XY Cut page segmentation algorithm. The result of XY Cut page segmentation is evaluated on scanned OCR document.
Performance of BAT Algorithm on Localization of Wireless Sensor Network
Authors: Goyal Sonia , Patterh Manjeet Singh
Published: May 2018

Many applications of wireless sensor networks (WSN) require information about the geographical location of each sensor node. Devices that form WSN are expected to be remotely deployed in large numbers in a sensing field, and to self -organize to perform sensing and acting task. The goal of localization is to assign geographical coordinates to each device with unknown position in the deployment area. Recently, the popular strategy is to apply optimization algorithms to solve the localization problem. In this paper, the bat algorithm is implemented to estimate the sensorâ€Ÿs position.
Enhancing RSA algorithm using Mersenne Primes with reduced size of encrypted file
Authors: Pund Shilpa Madhaorao , Desai Chitra G
Published: May 2018

Message passing from source to destination is one of the important aspects of communication. However, it is requiredmany times that this message gets transmitted secretly, so that no unauthorized person gets knowledge of the contents ofthat message. To retain the confidentiality of the message transmitted is a challenging task as it needs to be guaranteedthat the message arrive in the right hands exactly as it was transmitted. Another challenge is of transmitting the messageover a public, insecure channel. In this paper, RSA algorithm is implemented using Mersenne Primes which guaranteesthe primality. This is an enhanced algorithm which increases the strength of RSA by generating large prime numbers andalso reduces the size of encrypted file.
Evaluation of an Intelligent Approach for Semantic Web
Authors: Rana Vijay , Singh Dr Gurdev
Published: May 2018

The semantic web is a vision which captures information from the web and makes it possible to help machines to understand complex human requests. Such intelligence based understanding requires important sources of information to be structured semantically so that the meaningful information can be accessed and provided to the users. The main outcome of the current idea is to derive the development of search engines to provide the users with artificial intelligence experience. The achievement of this idea requires integration of autonomous tools and standards. The technology can be realized to its task potentially by incorporating/deploying intelligent agents in semantic web.
Dynamic Clustering Protocol for Data Forwarding in Wireless Sensor Networks
Authors: Virmani Deepali , Jain Akshay , Khandelwal Ankit , Gupta Divik , Garg Nitin
Published: May 2018

Energy being the very key concern area with sensor networks, so the main focus lies in developing a mechanism to increase the lifetime of a sensor network by energy balancing. To achieve energy balancing and maximizing network lifetime we use an idea of clustering and dividing the whole network into different clusters. In this paper we propose a dynamic cluster formation method where clusters are refreshed periodically based on residual energy, distance and cost. Refreshing clustering minimizes workload of any single node and in turn enhances the energy conservation. Sleep and wait methodology is applied to the proposed protocol to enhance the network lifetime by turning the nodes on and off according to their duties. The node that has some data to be transmitted is in on state and after forwarding its data to the cluster head it changes its state to off which saves the energy of entire network. Simulations have been done using MAT lab. Simulation results prove the betterment of our proposed method over the existing Leach protocol.
Shape Matching and Recognition using Hybrid Features from Skeleton and Boundary
Authors: Gatram Rama Mohan Babu , Babu Dr. B. Raveendra , Srikrishna Dr. A. , Rao N. Venkateswara
Published: May 2018

This paper presents a novel approach for effective matching of similar shapes from skeleton and boundary features. The features identified from the shape are the junction points, end points, and maximum length from single pixel pruned skeleton of the shape. Another two features identified from the boundary are junctions and boundary length of the shape. These five features are then used for shape matching. We tested these features on Kimia shapes dataset and tools dataset. The matching process from these features has produced good results, showing the probable of the developed method in a variety of computer vision and pattern recognition domains. The results demonstrate these features are rotational and transform invariant.
Biometric application and classification of individuals using postural parameters
Authors: Maatar Dhouha , Fournier RÃ©gis , Lachiri Zied , Naitali Amine
Published: May 2018

This Biometrics refers to automatic recognition of individuals based on their physiological and/or behavioral characteristics. The displacement of the centre of pressure (COP) is a measure that has been successfully employed in studies regarding the postural control. So why not using the postural control as a behavioral characteristic to recognize individuals? The purpose of this study is to recognize individuals and to classify them by their age, gender, height and weight using postural features. The recognition approaches: Linear Discriminant Analysis (LDA), Support Vectors Machine (SVM) and K Nearest Neighbors (KNN) are applied to these biometric application. The postural features using in this application are extracted from data from twenty five healthy participants (average age 31 Â± 11 years) standing in orthostatic position on an electromagnetic platform. The features are divided into three categories: classical features (extracted directly from the signals), mPCA features (extracted from the components trembling and rambling issued from the mPCA decomposition) and wavelet features (extracted from the components detail signal level 3 and detail signal level 2 issued from the wavelet decomposition. The results show that the ten subjects chosen for the recognition application are identified by the LDA with the rate of 80.43%. The classification applications (according to age, gender, height and weight) are performed for the all participants and the best resulted classification rates ranged from 82.61% to 93.48%. Most of these best rates are performed by the SVM classifiers using the totality of the features.
Survey on the Research Challenges of Radio Resource Management in LTE-A and the Current Proposed Solutions for these Challenges
Authors: Al-Jaradat Huthaifa , Sandrasegaran Kumbesan
Published: May 2018

Long Term Evolution-Advanced (LTE-Advanced) has been recently submitted by the 3rd Generation Partnership Project (3GPP) to the International Telecommunication Union (ITU) as one of the candidates 4G technologies. LTE-Advanced is expected to outperform its predecessor (i.e. LTE) by providing data rate up to 1Gbps and 500 Mbps in the downlink and uplink directions, respectively, also by supporting higher speed mobility (i.e. 500 km/h). In order to allow such advances in the performance, Radio Resource Management (RRM) must be effectively utilized. This paper studies the technical challenges associated with some of the RRM tasks (including Packet scheduling, interference management and handover control), in addition it presents from the open literature some of the proposed solutions to these technical challenges.
A Comparison of Filtering Techniques for Image Quality Improvement in Computed Tomography
Authors: Ruikar Dr. Sachin D. , N. Raut Ms. Vrushali
Published: May 2018

Computed Tomography (CT) is an important and most common modality in medical imaging. In CT examinations there is trade off between radiation dose and image quality. If radiation dose is decreased, the noise will unavoidably increase degrading the diagnostic value of the CT image and ifthe radiation dose is increased, the associated risk of cancer also increases especially in paediatric applications. Image filtering techniques perform image pre-processing to improve the quality of images. These techniques serve two major purposes. One is to maintain low radiation dose and another is to make subsequent phases of image analysis like segmentation or recognition easier or more effective. This paper presents the effect of noise reduction filter on CT images particularly that of anisotropic diffusion filter and Gaussian filter in combination with Prewitt operator. Anisotropic diffusion is Selective and nonlinear filtering technique which filters an image within the object boundaries and not across the edge orientation. Simulation results have shown that the anisotropic diffusion filter can effectively smooth noisy background, yet well preserve edge and fine details in the restored image. Gaussian filter smoothens the image while Prewitt operator detects the edges, so the combination of Gaussian filters and Prewitt operator works like a nonlinear filter.Thus these two filtering techniques improve an image quality and allow use of low dose CT protocol
A NOVEL METHOD OF COLOR IMAGE ENHANCEMENT BY COLOR SPACE TRANSFORMATION FOLLOWED BY GAMMA/LOGARITHMIC TRANSFORMATION
Authors: Dixit Karnika , Lakhwani Mr.Kamlesh
Published: May 2018

Visual enhancement of image plays a very important role in the field of medical imaging. Enhanced medical images are more suitable for analysis and proper diagnosis. We present a novel method of enhancement of color medical images in this paper. We are transforming color space of the image from RGB to HIS followed by application of logarithmic and gamma transformation on saturation and intensity component respectively. Hence we obtain a visually enhanced version of the original image. We have obtained excellent color medical image enhancement results presented in this paper.
AN EFFECTIVE COLOR FACE RECOGNITION BASED ON BEST COLOR FEATURE SELECTION ALGORITHM USING WEIGHTED FEATURES FUSION SYSTEM
Authors: Balasundaram Sasi Kumar , Umadevi J. , Gomathi B. Sankara
Published: May 2018

This paper aims to achieve the best color face recognition performance. The newly introduced feature selection method takes advantage of novel learning which is used to find the optimal set of color-component features for the purpose of achieving the best face recognition result. The proposed color face recognition method consists of two parts namely color-component feature selection with boosting and color face recognition solution using selected color component features. This method is better than existing color face recognition methods with illumination, pose variation and low resolution face images. This system is based on the selection of the best color component features from various color models using the novel boosting learning framework. These selected color component features are then combined into a single concatenated color feature using weighted feature fusion. The effectiveness of color face recognition method has been successfully evaluated by the public face databases.
Continuously Moving Objects Framework to Monitor Result Changes of Spatio Temporal Queries using Data Stream Management System
Authors: Panday Brijesh , Yadav Vinod Kumar , Paul Shreya
Published: May 2018

In this paper the concept of safe limit in the framework for continuously moving objects to monitor result changes of spatio temporal queries has been proposed. In this framework the movement of the moving object is monitored with the help of user defined aggregate function over spatio temporal reference in data stream management system. The expected movement of the moving object is plotted on the graph and the spatio temporal queries are answered on the basis of that, until and unless the difference between the expected movement and actual movement is more than the safe limit. This makes the framework more efficient than the previously given framework. The safe limit can be any range with respect to space and time of a moving object which varies according to different parameters such as size of the object, velocity with which it is moving and etc.
A multifaceted semantic web service description of the pervasive information system
Authors: Achour Fatma , Jedidi Anis , Gargouri Faiez
Published: May 2018

The technique of adapting the web service allows the user to establish reusable, interoperable, flexible and context-aware applications. In fact, the pervasive system specification is provided by the context-aware applications since it is dynamically adapted. Furthermore, we seek to offer a dynamic description of the web services. This objective, however, can be achieved by adding contextual information structures to the web service description. In the literature, more research works strive to combine the contextual description with the web service description using the OWL-S structure.In fact, the main objective of this paper is to propose structures with two levels for the contextual description of the pervasive system. This description is based on the generic model for the pervasive system design. We, also, suggest integrating such a description into the OWL-S structure.
Comparison of dispersion compensation with Fiber Braggs Grating at Transmitter and Receiver end of a single channel optical communication system
Authors: Sharma Er. Abhishek , Singh Er. Sukhbir , Thakur Er. Rajeev , Sharma Er. Bhubneshwar
Published: May 2018

Optical fibers are used to transmit the light signal in optical communication system. When the light pulses propagates down the fiber, the pulses spreading takes place, and this phenomenon is called Pulse Dispersion. Dispersion is the main factor which affects the performance of fiber in optical fiber communication system. Dispersion can be compensated by many ways. Dispersion compensation by FBG (fiber bragg grating) is studied in this paper. Dispersion compensation by FBG along EDFA plays a very important role in dispersion compensation. When FBG is used after EDFAÂ  at transmitter side (before fiber)in single channel optical communication system then it gives better performance (less BER) as compare to when FBG used after EDFA at receiver end (after fiber). In this paper performance of system is investigated by using FBG after EDFA at both transmitter side (before the fiber) and receiver side (after the fiber). For 50km BER reduces from 1.28559e-111 (FBG after EDFA at receiver side) to 9.57499e-201 (FBG after EDFA at transmitter side).
Challenges and Security Issues in Future IT Infrastructure Components
Authors: Ali Syed Mubashir
Published: May 2018

Over the past 2 decades, the information technology infrastructure has gone through an exponential change with the introduction and evolution of new technologies and trends. Organizations previously having their data on-premise and their infrastructure comprising of multiple server machines on multiple server racks and dedicated client personal computers (PCs) are moving towards cloud computing & virtualization to Smartphone and tablets. This rapid advancement and constant change, although increasing productivity for the organizations is resulting in a rising number of challenges and security issues for the organizations, their managers, IT administrators and technology architects. This paper discusses the future IT infrastructure components and the challenges & security issues that arise after their implementation that needs to be taken care of in order to get the full advantage of IT.
Outlier Analysis of Categorical Data Using Infrequency
Authors: Dirisinapu Lakshmi Sreenivasareddy , Mudumbi Krishna Murthy , Aliseri Govardhan
Published: May 2018

Anomalies are those objects, which will act with different behavior and do not follow with the remaining records in the databases. Detecting anomalies is an important issue in many fields. Though many methods are available to detect anomalies in numerical datasets, only a few methods are available for categorical datasets. In this work, a new method has been proposed. This algorithm finds anomalies based on infrequent itemsets in each record. These outliers are generated by Apriori property on each record values in datasets. Previous methods may not distinguish different records with the same frequency. These give same score for each record. For each record a score is generated based on infrequent itemsets which is called MAD score in this paper.Â  This algorithm utilizes the frequency of each value in the dataset. FPOF method is used the concept of frequent itemset and otey method used infrequent itemset. But these cannot distinguish records perfectly. The proposed algorithm has been applied on Nursery dataset and Bank dataset taken from â€œUCI Machine Learning Repositoryâ€. Numerical attributes are excluded from Datasets for this analysis. The experimental results show that it is efficient for outlier detection in categorical dataset.
Survey paper on various mining methods on multimedia Images
Authors: Oswal Prateek , Singh Divakar
Published: May 2018

Multimedia mining is a young but challenging subfield in data mining .Multimedia explanation represents an application of computer vision that presents the recognition of objects or ideas related to a multimedia document as a image. There is not unified conclusion in the concept, content and methods of Multimedia mining, Multimedia mining architecture and framework has to be further studied. there are various mining methods that we can apply on multimedia images like association rule mining, sequence mining, sequence pattern mining etc. In this survey paper we are focusing all this methods. We also discussed feature selection methods of various images.
Image Steganography combined with Cryptography
Authors: Paruchuri Vijaya Lakshmi , Sridevi Dr.R. , Rao K.S. SadaSiva
Published: May 2018

Steganography is the science of invisible communication. Apart from the sender and intended recipient no one suspects the existence of the message. Using Steganography, information can be hidden in various mediums known as carriers. The carriers can be images, audio files, video files and text files. Image Steganography is a technique of using an image file as a carrier. Cryptography protects the information by applying the encryption and decryption techniques, so that the secret message can be understood only by the right person.This paper proposes a method, which combines the techniques of Steganography and cryptography, to hide the secret data in an image. In the first phase, the sender will embed the secret data in an image by using the Least Significant Bit (LSB) technique. The embedded image will be encrypted by using an encryption algorithm. At final, the encrypted image will be decrypted and the hidden data will be retrieved by supplying the valid secret key by the receiver. The process includes the phases of Data embedding, Image Encryption and recovery of both original image and secret data from the encrypted image.
Prognostic Load Balancing Strategy for Latency reduction in Mobile Cloud Computing
Authors: Cheema Ibrahim A. , Ahmad Mudassar , Jan Fahad , Bin Ngadi Dr. Asri
Published: May 2018

In Mobile Cloud Computing (MCC), load balancing is essential to distribute the local workload evenly across all the nodes either statically or dynamically. A high level of user satisfaction and resource utilization ratio can be achieved by ensuring an efficient and fair allocation of all computing resources. In the absence of proper load balancing strategy/technique the growth of MCC will never go as per predictions. The appropriate load balancing helps in minimizing resource consumption, implementing fail-over, enabling scalability, avoiding bottlenecks. In this paper, a prognostic load balancing strategy is proposed and implemented for computational latency reduction in MCC. Also the results of proposed technique is compared with existing techniques. Finally this study concludes that the proposed predictive technique reduces associated overheads, service response time and improves performance. There are also Various parameters that are identified and used to compare the existing techniques.Â Â
Performance Analysis of Handoff in CDMA Cellular System
Authors: Kaur Dr. Dalveer , Kumar Neeraj
Published: May 2018

Handoff mechanism is extremely important in cellular network because of the cellular architecture employed to maximize spectrum utilization. This unique feature has driven the rapid growth in the mobile network industry, changing it from a new technology into a massive industry within less than two decades. Handoff is the essential functionality for dealing with the mobility of the mobile users. This paper shows the soft handoff effects on the uplink direction of IS-95 CDMA networks is carried out, leading to optimize soft handoff for capacity under perfect power control approach. In practical systems, there is a nonzero handoff completion delay and soft handoff provides the required robustness to delays, although it comes at the expense of additional network resources. Thus, there is a tradeoff between the extent of soft handoff required and the handoff execution delay. This paper presents an analytical framework to study this tradeoff and also discuss simulation results simulated with the help of Matlab. For this, handoff dropping probability is minimized up to 0.1%.
AFDroid: Anti-Forensics Device To Protect Android System
Authors: Siddiqui Ahmad Talha , Siddiqui Shoeb Ahad , Ibrahim Mohammad
Published: May 2018

Mobile devices are among the most common new technologies of the year, gaining even more spread over and success in the day-to-day life of wide range of people. Unfortunately, while the number of mobile devices are used in crime activities is spreading and growing all over the world, the capability to perform the forensics analysis of such devices is limited both by technological and methodological problems. In this paper, we focus on anti forensics techniques applied to mobile device. Furthermore we observe the effectiveness of techniques.Â
A NOVEL SYNTHETIC PROTOCOL FOR THE BIS-TRIAZOLONES DERIVATIVES THROUGH CORRESPONDING N1-ETHOXYCARBONYL-N1-TOSYLHYDRAZONATES
Authors: Ben Salah Bochra , Hamzaoui Salwa , Rekik Awatef , Kossentini Mohamed
Published: May 2018

A simple method has been developed for the synthesis of bis-triazolones 2a-n starting from N1-ethoxycarbonyl-N1-tosylhydrazonates 1 and aliphatic diamine. It affords a number of bis-triazolones 2a-n  in reasonable yields. The structures of all new compounds were elucidated using infrared, 1H and 13C NMR studies as well as elemental analysis. Some of these reactions provide successful means to produce biologically important structures.
1,3,4-Oxadiazole Dimers: New and Effective corrosion inhibitors for mild steel in sulphuric acid solution
Authors: P Sounthari. , A Kiruthika. , J Saranya. , K Parameswari. , S Chitra.
Published: May 2018

The corrosion inhibition property of 1,3,4-Oxadiazole dimers have been investigated for mild steel in acidic environment using gravimetric method, Tafel polarization, electrochemical impedance spectroscopy (EIS), scanning electron microscope (SEM), atomic absorption spectroscopy (AAS) and adsorption isotherm. The results revealed that 1,3,4-Oxadiazole dimers had excellent corrosion inhibition property for mild steel in 1M H2SO4 acid media and its inhibitive efficiency was more than 99% even with a low concentration of 1000ppm.The adsorption of the organic compounds on the mild steel surface obeyed Langmuir adsorption  isotherm. IR spectra and SEM proved the adsorption of organic inhibitors and the formation of corrosion products on the mild steel surface.
Synthesis and physico-chemical studies of a novel noncentrosymmetric heptacoordinated cadmium(II) compound containing a tripodal amine, CdCl2[N(C2H6N)3]2
Authors: Nasr M. Ben , Kaabi K. , Silva P. S. Pereira , Lefebvre F. , Nasr C. Ben
Published: May 2018

A new noncentrosymmetric Cd(II) complex with thetripodal amine tris(2-aminoethyl)amine, CdCl2[N(C2H6N)3]2, has been prepared and characterized by single crystal X-ray diffraction, solid state NMR and IR spectroscopies. In the complex, the Cd(II) ion is surrounded by sevennitrogen atoms. The organic molecule acts as both a tri-and a tetradentate ligand. The cationic complexes are linked to each other forming layers parallel to the (a, b)plan. The Cl- counter ions occupy the cavities created inside these layers. The 13C CP-MAS NMR spectra are in agreement with the X-ray structure. DFT calculations allow the attribution of the carbon peaks to the differentatoms.The vibrational absorption bands were identified by infrared spectroscopy and DFT calculations allowed their attributions.
Metal Oxide Porous Coatings for Implantant Materials
Authors: Skatkov Leonid , Lyashok L. , Gomozov V. , Tokareva I. , Bayrachniy Boris , Kolupaev Igor
Published: May 2018

The paper presents the results of study of synthesis of metal oxide coatings on porous materials used in implant surgery (stainless steel 12X18H9T, titanium alloy and high-purity niobium VT5). It is shown the prospects of electrochemical anodizing method for the purpose of formation of porous, corrosion-resistant and biologically inert coatings, which significantly improve morphological structure of materials.
Geometric-arithmetic Index and Zagreb Indices of Certain Special Molecular Graphs
Authors: Xi Wenfei , Gao Wei
Published: May 2018

In this paper, we determine the Geometric-arithmetic indexand Zagreb indicesof fan molecular graph, wheel molecular graph, gear fan molecular graph, gear wheel molecular graph, and their r-corona molecular graphs.
In vitro Antidiabetic, anti-obesity and antioxidant proprities of Rosemary extracts
Authors: Ali Manel Ben , Mnafgui Kais , Feki Abdelfattah , Damak Mohamed , Allouche Noureddine
Published: May 2018

Diabetes mellitus is a serious health problem worldwide that has adverse and long-lasting consequences for individuals, families, and communities. Hence, this study sought to investigate the inhibitory potential of rosemary extracts on key-enzymes related to diabetes such as α-amylase and pancreatic lipase activities, as well as to assess their antioxidant properties in vitro. The IC50 values of Rosemary essential oil, ethyl acetate and methanolic extracts against α-amylase were 28.36, 34.11 and 30.39 µg/mL respectively, and those against pancreatic lipase were 32.25, 36.64 and 34.07 µg/mL, suggesting strong anti-diabetic and anti-obesity effects of Rosemary. The methanolic extract was found to be the highest in levels of phenolic (282.98 µgGAE/mg extract) and flavonoids (161.05 µg QE /mg extract) contents as well as in the antioxidant activity (IC50 = 15.82 µg/mL) as compared to other extracts ethyl acetate (IC50 = 32.23 µg/mL) and essential oil  (IC50 = 96.12 µg/mL).Antioxidant efficacy of Rosemary extracts has been estimated in the stabilization of sunflower oil (SFO) at three different concentrations, i.e. 200 (SFO-200), 500 (SFO-500) and 1000 ppm (SFO-1000). Results showed the highest efficiency of SFO-1000.The results obtained in this study demonstrated for the first time that Rosemary is a potent source of natural inhibitors of α-amylase and pancreatic lipase with powerful antioxidants proprieties that might be used in the food stabilization and the prevention of diabetes and obesity complications as a complementary pharmacological drug.
Reactivity of Hydrazine, Some Hydrazine derivatives and Diamines toward Ethyl 2,2-Dicyano-1-aryl (or alkyl)vinylcarbamate
Authors: Zribi Fethi , Salem Mansour , Chabchoub Fakher
Published: May 2018

A series of pyrimidinone and dipyrimidinone derivatives 2a-c, 4a-e and 6a-f has been synthesized via the reaction between ethyl 2,2-dicyano-1-aryl(or alkyl)vinylcarbamate derivatives 1a-d and hydrazine derivatives or  diamines. The reactivity of compounds 1a-d toward hydrazine is studied. The result is the formation of triazolones 5a-d rather than pyrimidinone derivatives.
Synthesis of Fluorinated Pyridines as 19F NMR pH Indicators
Authors: Amrollahi Mohammad Ali
Published: May 2018

This research was undertaken to synthesizes and evaluate 3,5-dihydroxymethyl-4-(2-fluorophenyl)-2,6-dimethylpyridine and 4-(fluoromethyl)-2,6-dimethylpyridine as indicators of 19F NMR pH. A comparison of 3,5-dihydroxymethyl-4-(2-fluorophenyl)-2,6-dimethylpyridine to 4-(fluoromethyl)-2,6-dimethylpyridine showed that 4-(fluoromethyl)-2,6-dimethylpyridine has a large 19F chemical shift to pH, a suitable pKa value and a good water solubility.
DEVELOPMENT AND VALIDATION OF UV SPECTROPHOTOMETRIC METHODS FOR DETERMINATION OF MEGLUMINE IN BULK
Authors: V. U. Barge , P. B. Jadhav , S. R. Attarde , K. V. Kodre , R. Y Patil
Published: May 2018

UV, first, second and third derivative spectrophotometric methods have been developed for the determination of meglumine. The solutions of standard and sample were prepared in distilled water. For the first method i.e. calibration curve UV spectrophotometric method, the quantitative determination of the drug was carried at 254 nm and the linearity range was found to be 10 – 60 µg/ml. For the first, second, third derivative spectrophotometric methods the drug was determined at 247 nm, 216 nm, 266 nm with the linearity range 10 – 60 µg /ml. The calibration graphs constructed at their wavelength of determination were found to be linear for UV and derivative spectrophotometric methods. All the proposed methods have been extensively validated. There was no significant difference between the performance of the proposed methods regarding the mean values and standard deviations.
Grape Seed and Skin Extract Mitigates High Dosage Garlic-Induced Oxidative Stress in Rat Heart
Authors: Limam Nadia , Marzouki Lamjed , Amri Mohamed
Published: May 2018

Garlic is a commonly used spice in folk medicine which could exert adverse health effects when given at high dose. Grape seed and skin extract (GSSE) exhibits a variety of beneficial effects even at high dose. In the present study we evaluated the toxicity of high garlic dose treatment on heart and the protective effect of GSSE. Rats were intraperitoneally (IP) administered either with garlic extract (5 g/kg bw) or GSSE (500 mg/kg bw) or a combination of garlic and GSSE at the same doses daily for one month. Data showed that high garlic dose induced heart toxicity and a pro-oxidative status characterized by increased MDA, NO, carbonyl protein, LDH, H2O2, free iron, and calcium. Unexpectedly garlic increased catalase and peroxidase but had no effect on superoxide dismutase. GSSE alone or in co-treatment with garlic had an opposite role and counteracted almost all garlic-induced deleterious effects to near control level. In conclusion, high garlic dose induced a pro-oxidative state into heart via the Fenton reaction between H2O2 and free iron, and GSSE exerted antioxidant properties.
An Efficient Isocyanide-Based Three-Component Synthesis of Novel Ketenimines
Authors: Emtiazi Hamideh , Amrollahi Mohammad Ali
Published: May 2018

This study provides a description of an efficient and simple procedure for the synthesis of dimethyl 2-(9-aryl)-3,3,6,6-tetramethyl-1,8-diox-1,2,3,4,5,6,7,8-octahydroacridin-10(9H)-yl)-3-((cyclohexylimino)methylene)succinate via a one-pot three-component reaction of cyclohexyl isocyanide, dimethyl acetylenedicarboxylate and hexahydroacridine-1,8(2H,5H)-dionesin CH2Cl2 at room temperature. Short reaction times, good to high yields and the novelty are the remarkable advantages of this work.
The Inhibition of Mild Steel Corrosion in Sulfuric Acid by New Dapsone Derivatives
Authors: Chakravarthy M.P. , Mohana Dr. K. N. , Kumar C.B. Pradeep
Published: May 2018

Dapsone derivatives Viz., 4, 4’-sulfonylbis(N-((1H-pyrrol-2-yl)methylene)aniline) (SBPMA) and 2-dimethylamino-5-[(4-{4-[(4-dimethylamino-benzylidene)-amino]-benzenesulfonyl}-phenylimino)-methyl]-benzene (DBBPB), a new class of corrosion inhibitors have been synthesized and their corrosion inhibition efficiency on mild steel in 0.5 M H2SO4 was investigated by mass loss,  Tafel polarization and AC impedance measurements. Potentiodynamic polarization studies showed that, these compounds behave as mixed type of corrosion inhibitors. The adsorption process was found to obey Langmuir isotherm model. Electrochemical impedance spectroscopy (EIS) studies revealed that polarization resistance (RP) increases and double layer capacitance (Cdl) decreases as the concentration of the inhibitors increases. Various thermodynamic parameters for the adsorption of inhibitors on mild steel were computed and discussed. FTIR, EDX and SEM analyses were performed to study the film persistency of the inhibitors.
Synthesis and physico-chemical studies of a novel coordination compound ZnCl2(C6H4FNH2)2
Authors: Ben Nasr Mahjouba , Aubert Emmanuel , Espinosa Enrique , Lefebvre Frederic , Ben Nasr Cherif
Published: May 2018

A new Zn(II) complex with the monodentate ligand 3-fluoroaniline, ZnCl2(C6H4FNH2)2, has been prepared and characterized by single crystal X-ray diffraction, Solid state NMR, IR and UV-visible spectroscopies. The Zn(II) ion, located on a special position, is tetracoordinated by two nitrogen atoms of two 3-fluoroaniline monodentate ligands and two chlorine ligands. In the atomic arrangement, the ZnCl2(NH2)2 entities are interconnected via N-H…Cl hydrogen bonds to form inorganic layers parallel to the (b, c) plane. The organic 3-fluorophenyl groups are located between these layers and connect each other via C-H…F hydrogen bonds to perform an infinite three-dimensional network. The F atom of the 3-fluoroaniline ligand is disordered over two positions. An F-F interaction between neighboring fluorine atoms contributes also to the structure cohesion. The 13C and 15N CP-MAS NMR spectra are in agreement with the X-ray structure. DFT calculations allow the attribution of the carbon peaks to the different independent atoms. Solid-state UV-Vis spectrum of the complex has been assigned to ligand and charge transfer transitions.
Synthesis, crystal structure and spectroscopy studies of a new non-centrosymmetric organic cation nitrate
Authors: Saadouni H. , Janzen D. E. , Rzaigui M. , Sta W.Smirani
Published: May 2018

The synthesis, crystal structure and spectroscopic studies are reported for the salt m-anisidinium nitrate. A single-crystal  X-ray investigation has shown that this compound crystallizes in the non-centrosymmetric space group Cc with the lattice parameters: a = 5.744(3) Å, b = 14.968(6) Å, c = 10.178(4) Å; b  = 96.910(7)o; V = 868.6(6)Å3 ; Z = 4. The structure was solved from 1973 independent reflections with R1 = 0.033 and wR2 = 0.088. The hydrogen atoms of the protonated amine undergo hydrogen bonding interactions with oxygen atoms of three different nitrate anions forming 2-dimensional sheets. Solution NMR results are consistent with the X-ray structure. A measured optical band gap of 3.35eV indicates m-anisidinium nitrate is a wide-band-gap dielectric material.
Heavy Metals Concentrations in the Shell and Tissue of Periwinkle (Tympanotonus fuscatus) and Giant Land Snail (Achatina fulica) in Soku Community of Niger Delta, Nigeria.
Authors: C.I.A. Nwoko , L.N. Ukiwe
Published: May 2018

The pollution of aquatic ecosystem by heavy metals has assumed serious proportions due to their toxicity and accumulative behaviour. River dams are especially at risk of contamination by different contaminants from anthropogenic sources including heavy metals since change of sediment regime often occur. The accumulation of five heavy metals; chromium (Cr), Cadmium (Cd), Lead (Pb), Copper (Cu) and Arsenic (As) in periwinkle, (Tympanotonus fuscatus, var, radula) and giant land snail (Achatina fulica) shell and soft tissue collected from Soku Community, Akuku-toru Local Government Area of Rivers State, Nigeria. The periwinkle and giant land snail were processed and analyzed for heavy metals presence. Results obtained showed that the periwinkles accumulated more of these heavy metals than the snails. Copper and arsenic were the highest concentrated heavy metals in the periwinkle shell soft tissue. The concentration of copper and arsenic in periwinkles soft tissue was found to be l,612 mg/kg and 2.40 mg/kg respectively. In the giant land snail the soft tissue concentrated more of copper (277 mg/kg). These values exceeded set standards for guidelines on toxicity.
Synthesis and characterization of novel copolymers based on carbazole and anthracene, for optoelectronic applications
Authors: Belghiti N. , Bouachrine M. , Alimi K.
Published: May 2018

The goal of this work is to study a new copolymer which combines the Ecbz properties and those Ant. First, we describe the route for preparing the new copolymer. Then, we report characterization measurements based on solid-state Nuclear Magnetic Resonance (CP-MAS 13C NMR), Raman, IR absorption, UV–visible absorption, photoluminescence spectroscopy, Scanning Electron Microscopy (SEM), and X-ray diffraction.
Synthesis and cytotoxic activity of a novel dihydroisoquinoline-derived hydroxamic acid
Authors: Ben Salah Hassen , Carraz Maëelle , Kammoun Majed
Published: May 2018

Naturally occurring hydroxamic acid derivatives are biosynthesized by microorganisms (siderophores) and plants (benzoxazinoids). Recent developments in drug related research have highlighted the promising biological and pharmacological properties that the hydroxamic acid function may offer for the enhancement of therapeutic applications. This study reports on the full synthesis of a new dihydroisoquinoline hydroxamic acid (2-Hydroxy-3,3-dimethyl-7-nitro-3,4-dihydroisoquinolin-1(2H)-one). It also describes its cytotoxicity with regard to the human hepatocarcinoma cell line Hep3B.
Synthesis and characterization of a new Organic – Inorganic sulfate (C5H6N2O)2[Co(H2O)6]3(SO4)4.2H2O
Authors: Mathlouthi M. , Benmansour S. , Rzaigui M. , Sta W. Smirani
Published: May 2018

crystals of a new hybrid compound, (C5H6N2O)2[Co(H2O)6]3(SO4)4.2H2O, were synthesized in aqueous solution and characterized. This compound crystallizes in the triclinic system with the space group P-1, the unit cell :a=6.632(3) Å, b=11.769(5) Å, c=14.210(6) Å, α=67.86(4)°, β=81.32(4)°, γ=85.18(4)° and V=1015.14(8) Å3 . Its crystal structure can be described as a packing of alternated inorganic and organic layers. The different components are connected by a three-dimensional network of O-H…O and N-H…O hydrogen bonds.
Synthesis, crystal structure and antifungal activity of dihydroisoquinoline Oxaziridines Substitued in Position 1
Authors: Bouzid Mouna , Abdennabi Raed , Hrizi Chakib , Gharsallah Neji , Kammoun Majed
Published: May 2018

We report here the synthesis and the X-ray crystallography of dihydroisoquinoline oxaziridines with methyl substitute in position 1 and with nitro group in position 7 (compound 3b). We also synthesized the compound 3a without nitro. These compounds have been prepared by the peracidic oxidation of imines with m-chloroperbenzoic (m-CPBA) like oxidizing agent. This two compounds exhibit higher antifungal activity.
XRD, DTA AND TGA INVESTIGATIONS OF THE BaFe12-xAlxO19 SOLID SOLITIONS
Authors: Jabarov Sakin , Trukhanov Alex , Trukhanov Sergey , Mammadov Ali , Turchenko Vitaly , Mehdiyeva Rafiga , Huseynov Ramiz
Published: May 2018

By X-ray diffraction, differential thermal analysis (DTA) and thermo-gravimetric analysis (TGA) were investigated BaFe12-xAlxO19 hexaferrites with various concentrations of Al (x = 0.3, 0.9 and 1.2). Crystal structure of compounds was determined, and it determined that under normal condition (P = 0 GPa, T = 300 K) they possess structure is hexagonal symmetry with the space group P63/mmc. Replacing Fe3+ ions Al3+ with ions, on account of reducing ion radius, decrease of indices of parameters was occurred. This crystal structure is saved in a temperature range 30 - 950 ºC and structural phase transition do not occur. Energy supplied to a system is fully swallowed by a system, monotonic decrease is occurred in TGA curve and in DTA curve endo and exo effects do not occur.
Synthesis, structure and characterization of a new cadmium(II) iodide containing a tetradentate tripodal amine
Authors: Kaabi Kamel , Ferretti Valeria , Lefebvre Frederic , Ben Nasr Cherif
Published: May 2018

A cadmium(II) iodide compound of the [Cd(L)I]I series, with L = tris(2-aminoethyl)amine, is synthesized and characterized. X-ray structural study shows that the title compound has a slightly distorted trigonal bipyramidal environment where the CdN4I chromophore is bounded by N atoms of L and one iodide. In the structural arrangement, the [Cd(L)I]+ cationic complexes are interconnected via N-H···I hydrogen bonds generated by the uncoordinated I iodide anions to form layers parallel to the (a, c) plane. The 13C CP-MAS NMR spectrum is discussed and the vibrational absorption bands were identified by infrared spectroscopy and DFT calculations.
Physicochemical Characteristics of Saudi Arabian Locally Produced Raw and Diluted Honeys and Their Relations to Antimicrobial Activity
Authors: El-Shahawi Mohammad S , Al-Hindi R.
Published: May 2018

The physicochemical characteristics and antibacterial activity of Saudi Arabia honeys were studied for the first time. The levels of free and total acidity, pH, ash and moisture content were in the range 1.6 ±0.17 - 15.1 ±0.1 meq/kg, 2.77 ± 0.06 - 5.37 ±0.04, 1.1 ±0.02 – 1.7 ±0.03 % and < 18.0 %, respectively. Lovibond comparator color scale (P, mm) of samples was ranged from water white (P=0.0-1.3), extra light Amber (P=38.14-46.57), light Amber (P=60.39-75.54), Amber (P=86.72-110.08), dark (P=142.39-348.44) and very dark shade (P= 541.84).  Dark honeys showed excellent inhibitory effects against bacterial growth. Excellent correlation between color of raw and diluted (>10.0%m/v) honey and antimicrobial activity was noticed. Honey species from different floral sources posses’ strong antioxidant and anti bacterial activities and are scavengers of active oxygen species.
Correlation between PAL, medicarpin, phenol and flavonoid content in Medicago sativa L. at different growth stages
Authors: Fatemeh Zarinkamar , Nastaran Asadi , Soleimanpour Saeideh
Published: May 2018

Alfalfa (Medicago sativa L.) is from Fabaceae family that has several flavonoid compound in roots and shoots. in alfalfa the major phytoalexin is medicarpin. In this study, total phenolic and flavonoid compounds and phenylalanin ammonia lyase (PAL) activity in different stages of development were measured. In this research the concentration of medicarpin by HPLC were studied in different stages of development. The lowest and highest level of the concentration of medicapin were in seedling stage and budding stage of growth, respectively. The results indicated that contents of total phenolic compounds and total flavonoid and PAL activity increase with developmental stage ,but decrease in flowering stage of growth.
Thermodynamic Study of Light Organic Molecules Adsorption onto ZK-4 Zeolite
Authors: CHALAL Nabila , HAMAIZI Hadj , VICIANA Maria Del Mar SOCIAS
Published: May 2018

In this work, we were interested to the interactions of various light gases (critical temperature not exceeding 31 °C) with the zeolite ZK-4 and its varieties exchanged at temperatures close to ambient. The interest first practice since these gases are frequently encountered in industry, and most separations, that concern them by pressure swing adsorption (PSA) are carried at room temperature. By working in these conditions, we will be in the scope of application of Henry's law, which will allow us to better characterize the adsorption of the first molecules (gas-solid interaction). The thermodynamic study should enable us to identify the type of adsorption (localized, non-localized) by applying a theoretical model explaining the experimental results. The choice of the adsorbate was guided by the behavior of the introduced molecules toward the compensating cations present in the zeolite framework. These probe molecules having a specific interaction with zeolitic cations: N2, CO2 (highly quadripolar), C2H4 (double bound) or C3H8 which do not exhibit neither. Final results show that adsorption of nitrogen on ZK-4 sodic form is made in a located way on five sites following Langmuir model and none of CO2 and C2H4 chemisorptions was revealed. Besides, the gaseous molecules interactions in presence of divalent cations replacing sodium in ZK-4 are much less higher than in the case of zeolite 4A, and are characteristic of physisorption on relatively heterogeneous sites.
THERMAL AND ELECTRICAL BEHAVIOUR OF THE SUPERPROTONIC CONDUCTOR PHASE IN Rb2(HSeO4)1.5(H2AsO4)0.5
Authors: NOUIRI Noura , JAOUADI Khaled , MHIRI Tahar
Published: May 2018

Crystals of a new compound with a superprotonic phase transition Rb2(HSeO4)1.5(H2AsO4)0.5 (noted RbHSeAs), were synthesized by slow evaporation of an aqueous solution at room temperature. The differential scanning calorimetric analyses showed two endothermic peaks at 465 K and 566 K. The last peak corresponds to the decomposition of the material. The first transition was characterized by several techniques (impedance spectroscopy, complex modulus, Raman and X-ray diffraction powder depending on temperature). ac impedance measurements revealed that, upon heating, the compound undergoes at ~ 443 K a sharp increase in conductivity from a low temperature protonic phase to a superprotonic conductivity phase. The activation energies calculated from the modulus (Ef) and impedance (E) spectra respectively are approximately equal, suggesting that the transport properties in this material above and below the superprotonic phase transition (443 K) are probably due to an H+ protons hopping mechanism.
Synthesis, Characterization and Application of Nano-adsorbent Materials in the Sorption of Pb(II), Ni(II), Co(II), Mn(II), Li(I) from Aqueous Solution
Authors: Gad Hamdi Mohamed Hassan , Labib Sh. , Aly M. I.
Published: May 2018

In this study, nano-adsorbent materials were synthesized from two different precursors by thermal activation technique. The first was the synthesizing of nano-zinc silicate from chemical reagents of zinc oxide and commercial silica gel. The second was the preparation of nano-pore size activated carbon from different biomass. The synthesized nano-adsorbent materials were characterized by different techniques; Surface Area, FTIR, XRD and SEM. The prepared nano-adsorbent materials were applied in the sorption and separation of some heavy metals from aqueous solution. These metals includes; Pb (II), Ni(II), Co(II), Mn(II) and Li(I). Some factors affecting on the sorption process (e.g. contact time and pH) were investigated. It was found that: the nano-zinc silicate (of ratio 1:1 thermally treated at 700 0C) and nano-pores activated carbon (prepared from saw dust impregnated with 70% H3PO4 overnight, then heated to 500 0C in presence of steam for 80 min.) were the best samples for sorption and separation of concerned heavy metals.
A 100% Water Mobile Phase HPLC-PDA Analysis of Selected Neonicotinoid Insecticides
Authors: Furusawa Naoto
Published: May 2018

This paper describes a reserved-phase HPLC method for detecting frequently-used neonicotinoid insecticides, acetamiprid (ATP) and imidacloprid (ICP), using an isocratic 100 % water mobile phase.  Chromatographic separations were performed an Inertsil® WP300 C4 with water mobile phase and a photodiode-array detector.  The total run time was < 7 min.  The system suitability was well within the international acceptance criteria.  The detection limits were 0.013 μg ml-1 for ATP and 0.015 μg ml-1 for ICP, respectively.  A harmless HPLC method for simultaneous detecting ATP and ICP was developed and may be further applied to the quantification in foods.