Paper Type	::	Research Paper
Title	::	Estimation de la charge de pollution bactériologique des eaux des deux affluents (Mikkés et Mellah) et son impact sur la qualité microbiologique des eaux du barrage Sidi Chahed (Maroc).
Country	::	Morocco
Authors	::	Mehanned.S ||, Chahlaoui.A ||, Zaid.A ||, Chahboune.M ||, Dehbi.A
Page No.	::	01-10
	::	10.9790/3021-04930110
	::	0.4/3021-04930110
		3021-0409-0310

This study aimed to assess the bacteriological water quality of the reservoir dam Sidi Chahed and these emissaries (wadisMellal and Mikess). Sources of water pollution from these reservoirs have been identified and their quality was assessed by bacteriological analysis between December 2012 and November 2013.les major microbial indicators of water quality were enumerated by membrane filtration from specific media agar culture. The dam them, those two wad is in the measurements are contaminated by fecal coliform concentrations in 100mL are sometimes higher than 9590 CFU. The presence of faecal coliforms and faecal streptococci at both oeuds and Dam indicate human or animal faecal contamination related to the practice of farming in the study area, as well as anthropogenic pressure. The interpretation of the data, the correlation between the different parameters and the distribution of stations group study according to the degree of contamination are conducted by the principal component analysis (PCA). Furthermore, the degree of pollution varies from site to site depending on the distance of remoteness of the source of pollution.

 

Keywords: Contamination, quality, Bacteriology, PCA, Sidi Chahed dam.

[1] Y. EL Ghachtoul, M.A. Mhamdi, H. Gabi, Eutrophisation des eux des retenues des barrages Smir et Sehla (Maroc) : causes, conséquences et consignes de gestion, Rev.Sci. de l'Eau, 18, 2005, 75-89.

[2] J. Alibou, Impacts des changements climatiques sur les ressources en eau et les zones humides du Maroc, Table Ronde Régionale en Méditerranée Athènes, Grèce, 2002 Décembre 10-11.

[3] ADH, Etat de la qualité des ressources en eau dans la région du sebou, Direction de la recherche et la planification de l'eau, Ministère des travaux publics et de la formation des cadres, Administration de l'hydraulique, 1993.

[4] T. Georges et J. Pierre, L'eau, patrimoine mondial commun, Belgique, (presses Universitaire de Numur, 2002).

[5] S. Hébert et S. Légaré, Suivi de la qualité des rivières et petits cours d'eau. Direction du suivi de l'état de l'environnement, ministère de l'Environnement, Québec, envirodoq No ENV-2001-0141, rapport N° QE-123, 24 p. 2000

Paper Type	::	Review Paper
Title	::	A Versatile Control Scheme for UPQC for Power Quality Improvement using fuzzy controller
Country	::	India
Authors	::	B.Suresh Kumar
Page No.	::	11-20
	::	10.9790/3021-04931120
	::	0.4/3021-04931120
		3021-0409-0320

The proliferation of power electronics based equipment has produced a significant impact on the quality of electric power supply. Conventional power quality mitigation equipment is proving to be inadequate for an increasing number of applications, and this fact has attracted the attention of power engineers to develop dynamic and adjustable solutions to power quality problems. This has led to development of Custom Power Devices (CPD).One modern and very promising CPD that deals with both load current and supply voltage imperfections is the Unified Power Quality Conditioner (UPQC). This paper investigated the development of UPQC control schemes and algorithms for power quality improvement and implementation of a versatile control strategy to enhance the performance of UPQC. The proposed control scheme gives better steady-state and dynamic response. The validity of the proposed control method is verified by means of MATLAB/SIMULINK

 

Index Terms: - CPD, UPQC, POWER QUALITY.

[1] C. Sankaran, Power quality, Boca Raton, Fla.: CRC Press LCC, 2002.
[2] Math H.J. Bollen, Understanding power quality problems: Voltage sags and Interruptions, New York: IEEE Press, 2000.
[3] Arindam Ghosh and Gerard Ledwich, Power quality enhancement using custom power devices. Boston: Kluwer Academic Publishers, 2002.
[4] N.G. Hingorani, "Introducing custom power", IEEE Spectrum, vol. 32, no. 6, pp. 41-48, June 1995.
[5] Hirofumi Akagi. "New trends in active filters for power conditioning", IEEE Transactions on Industry Applications, vol. 32, no. 6, pp. 1312-1322, Nov/Dec 1996.

Paper Type	::	Research Paper
Title	::	Session Based Ciphertext Policy Attribute Based Encryption Method for Access Control in Cloud Storage
Country	::	India
Authors	::	Priyanka Rajput ||, Pankaj Kwadakar
Page No.	::	21-25
	::	10.9790/3021-04932125
	::	0.4/3021-04932125
		3021-0409-0325

Everyday operations of modern enterprises heavily depend on their information processing capability, and the costs and overheads of managing them bring about the serious challenges. In order to relieve the burdens of IT resources and of maintaining them by professionals, cloud computing is introduced. CLOUD computing is a new computing paradigm that is constructed on virtualization, aligned and circulated computing, utility computing, and service oriented architecture. The advantages of cloud computing include decreased charges and capital expenditures, expanded operational efficiencies, scalability, flexibility, immediate time to market, and so on. Cloud storage is a basic service which has been widely used today. However, due to network security or trust to Cloud Storage service Providers (CSP), and other security incidents, many individuals and businesses are afraid to upload their own important or private data to the cloud storage servers. Thus, the access control security of cloud storage has become the focus of research in cloud storage filed. In this paper we propose a deployment model (SB-CP-ABE) for ABE which enables management of access rights as well as efficient key refreshing and revocation.

 

Keywords: - Cloud Storage; Access Control; Attribute-Based Encryption;Document Sharing;Ciphertext-Policy.

[1] W. Zeng, Y. Zhao, K. Ou, and W. Song, "Research on cloud storage architecture and key technologies," in2nd International Conference on Interaction Sciences: Information Technology, Culture and Human, 2009, pp. 1044–1048
[2] X. Jing and Z. Jian-jun, "A brief survey on the security model of cloud computing," in Ninth International Symposium on Distributed Computing and Applications to Business, Engineering and Science, 2010, pp. 475 – 478.
[3] R. Chandramouli and P. Mell, "State of security readiness," in Crossroads. ACM, 2010, pp. 23 – 25.

[4] A. Sahai and B. Waters, "Fuzzy identity based encryption," in Advances in Cryptology, vol. 3494 of LNCS. Springer, 2005, pp. 457 – 473.
[5] V. Goyal, O. Pandey, A. Sahai, and B. Waters, "Attribute-based encryption for fine-grained access control of encrypted data," in 13th ACM conference on Computer and communications security. ACM, 2006, pp. 89 – 98.

Paper Type	::	Research Paper
Title	::	Corrosion and Structural characterization of electrodeposited Hydroxyapatite to specify optimum deposition conditions
Country	::	Iraq
Authors	::	Mustafa Sh. Alhilfi ||, Aqeel F.Hasan ||, JamalF. Hamodi
Page No.	::	26-36
	::	10.9790/3021-04932636
	::	0.4/3021-04932636
		3021-0409-0336

Hydroxyapatite (HA) is most important biomaterial which is used as coating layer on implants to speedup bone ingrowth.Cathodic electrodepositionprocess was used to coatTi-6Al-4V alloy with HA. Thechemical solution consists from Ca(NO3)2 ,(NH4)2HPO4 and Na(NO3)2. Different deposition conditions including applied voltage, deposited time, PH value and temperature of chemical solution were investigated to obtain ideal coating with best structure and good corrosion parameters. X-ray diffraction (XRD),Scanning electron microscope (SEM) andPotentiodynamic polarization measurements were exploitto characterize structure and corrosion parameters of deposited layers. Under our conditions, best corrosion parameters were obtained when applied voltage 9volt,deposited time 30 minute, PH value 5.5 and solution temperature 250C.

 

Keywords: - Electrodeposition, Hydroxyapatite,Ti-6Al-4V alloy, deposition conditions and corrosion parameters

[1]- Ľ. Medvecký and R. Štulajterová .Characterization of bilayered Brushite / Hydroxyapatite coating on titanium substrate.Powder Metallurgy Progress.2008;8(1),35-45.

[2] W.Shi,A. Kamya,J. Zhu, A. Watazu. Properties of titanium biomaterial fabricated By sinter bonding of Titanium/Hydroxyapatite composite surface coated layer to pure bulkTitanium.Materials science and engineering A337.2002;104-109.

[3]. C. K. Wang, J. H. Chern Lin.Pulse Laser Deposition of Hydroxyapatite.Biomaterials.1997;18,1338-1331.

[4]- C.Wang, J. Mo, W.Cheng and R.Zhang.Thick hydroxyapatite coatings by electrophoretic deposition.Materials Letters.2002;57,105-99.

[5]- M. C. Kue and S. K. Yen . The process of electrochemical deposition hydroxyapatite on biomedical Titanium at room temperature. Materials Science and engineeringC.2002;20,160-153

Paper Type	::	Research Paper
Title	::	Localized Magnetic Impurity States and Magnetic Moments in a Non-Magnetic host metal
Country	::	Ethiopia
Authors	::	AyanaYihunie || Amarendra Rajput || And GetachewAbebe
Page No.	::	37-45
	::	10.9790/3021-04933745
	::	0.4/3021-04933745
		3021-0409-0345

A simplified model Hamiltonian is presented and applied to calculate the density of magnetic impurity states and to study the formation of local magnetic moments in a non-magnetic host metal when a small amount of magnetic impurities is dissolved in it. For this purpose, the many- body Anderson impurity Hamiltonian is transformed into an effective one-body Hamiltonian within the framework of second quantization.This Hamiltonian is then used to derive the equations of motion for the double-time retarded Green's functions in Zubarev's notation. These Green''s functions are employed to calculate the density of impurity states and the average occupation number of impurity electrons with specific spin orientations. Finally the general magnetic solutions are found and a phase diagram is drawn to show how local magnetic moments may be formed under suitable conditions determined by an intricate interplay of certain physical parameters such as impurity energy levels, on-site coulomb repulsion and the hybridization energy.

 
Keywords:- Anderson impurity Model, second quantization, double-time Green's function, hybridization energy, density of states.

[1] W. De Haas,J. De Beor and G.J Van Den Berg, physica, Vol.1, pp1115, 1934.
[2] J. Kondo,Progr. Theoret. Phys. (kyoto), Vol.28, pp846, 1962; Vol.32, pp37, 1964
[3] B.T. Matthias, M. Peter, H. J. Williams, A.M. Clogston, E. Corenzwit, and R.C. Sherwood,phys. Rew.lett.,Vol.125, pp 541, 1962
[4] D. Riegel and K.D. Gross, Phys. Rev. B, vol163, pp678, 1990.
[5] J. Kappor, A.Metx, D. Riegal, R.Zeller, K.D. Gross, P.Schwalback, M.Eritic, E. Kankeleit, and W.D. Brewer, Europhys. Lett., Vol. 24, pp 299, 1993.

Paper Type	::	Research Paper
Title	::	Deformation behaviour of AA04 Alloy fly ash composites by using fem
Country	::	India
Authors	::	Vijayalakshmi, M.Balaji
Page No.	::	46-48
	::	10.9790/3021-04934648
	::	0.4/3021-04934648
		3021-0409-0348

Composites are most promising materials of recent interest. Metal matrix composites (MMCs) possess significantly improved properties compared to unreinforced alloys. Composites with fly ash as reinforcement are likely to overcome the cost barrier for wide spread applications in automotive and small engine applications. In the present investigation, AA 2024 alloy –10% fly ash composites were made by stir casting route. Phase identification and structural characterization was carried out on fly ash by X-ray diffraction studies. Scanning electron microscopy and optical microscopy was used for microstructure analysis. The
hardness, compression and tensile tests were carried out on all these alloy and composites.
The variations in FEA results compared to analytical results for AA 2024 alloy and AA2024 alloy- 10 % fly ash composites respectively. The obtained FEA results revealed that these values are closely matching with the experimental values with a maximum deviation of less than 5%. Hence the FEA model adopted for solving the present upsetting analysis was validated with the analytical results.

 

Keywords:- Electrodeposition, Hydroxyapatite,Ti-6Al-4V alloy, deposition conditions and corrosion parameters

[1] Weiss, D.: Using Metal Matrix composite castings, Proc. Symp. On Processing, properties and applications of CastMetalMatrix Composites, ed. P.K. Rohatgi (Cincinnati, 1996) 289.
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