Concrete is the most widely used construction material in India with annual consumption exceeding 100 million cubic metres. Production of one ton of Portland cement emits one ton of Carbon-di-oxide and other greenhouse gases leading to atmospheric pollution. Hence the need arises to replace cement with some other cementitious materials which are eco-friendly. Moreover the present method of disposal of ash generated in thermal power plants is not environmentally safe.The bottom ash and fly ash are mixed with water and the slurry thus formed is pumped into dykes. This method of disposal leads to ground water contamination, smaking adjacent lands infertile and causing air pollution. Hence there is urgent need to find a suitable and constructive way of disposal of the pond ash stored in these dykes.......

[1]. Arumugam K , Ilangovan R , James Manohar D, "A Study on Characterization and Use of Pond Ash as Fine Aggregate in Concrete" International Journal Of Civil And Structural Engineering,2011, Volume 2, No 2, p.p 466-477
[2]. Gambhir (2003) "A Text Book of Concrete Technology", Tata McGraw Hill, New Delhi.
[3]. Huiewn Wan and ZhongeShui,"Analysis of Geometric Characteristics of GGBS Particles and their Influences on Cement Properties", Journal of Cement and Concrete Research, 2004, Vol.34 Issue.1, pp.133-137.
[4]. Indian Standards 10262, Recommended Guidelines for Concrete Mix Design, Bureau of Indian Standards, New Delhi, 1982
[5]. Indian Standards 383 – 1970: Specification for Coarse and Fine Aggregates from Natural Sources for Concrete (Second revision), Bureau of Indian Standards, New Delhi

Nano technology has contributed a number of materials that have excellent properties and a lot of research has been put into effect in order to create nano particles which could be infused into cement paste in order to improve their performance. Although cementitious construction materials are mainly used in a large scale and in huge quantities, fundamental properties such as strength, ductility, creep, shrinkage, and fracture behavior depend, to a great extent, on structural elements and phenomena which are effective at the micro- and nanoscale. Although concrete offers many advantages regarding mechanical characteristics and economic aspects of the construction, the brittle behavior of the material remains a larger handicap for the seismic and other applications where flexible behavior is essentially required........

Key Word: Nano cement, polypropylene fibres, Compressive strength, Flexural strength, split tensile strength test.

[1]. Ali Sadrmomtazi And Ali Fasihi : Preliminary Study On The Mechanical Behavior Of Mortar Containing Waste Polypropylene Fiber And Nano Particles.
[2]. Armando García-Luna, Diego R. Bernal, NICOM 2: 2nd International Symposium on Nanotechnology in Construction, RILEM Publications SARL Publication year: 2006.
[3]. W. R. Malisch: Polypropylene Fibers In Concrete.
[4]. Mr. Mehul J. Patel, & Mrs. S. M. Kulkarni: Effect Of Polypropylene Fibre On The High Strenth Concrete.
[5]. Perumalsamy Balaguru And Ken Chong : Nanotechnology And Concrete Research Opportunities.

The goal of this research is to make attribute-based encryption (ABE) more suitable for data access control in the cloud.We focus on offering the encryptor complete control over access permissions, allowing for effective key management even in the face of many independent authorities. Cloud computing expansion is hampered by two primary factors: security and privacy. The fact that there are less real-time and business-related cloud applications than consumer-related cloud applications is due to security concerns. A new encryption approach based on Attribute Based Encryption (ABE) has been presented, which includes hash functions, digital signatures, and asymmetric encryption schemes. Our proposed algorithm is a simple but effective technique that can be used in cloud-based applications.

[1]. JunzuoLai,Deng, R.H, Chaowen Guan, JianWeng,.Attribute-Based Encryption With Verifiable Outsourced Decryption Information Forensics and Security, IEEE Transactions on , vol.8, no.8, pp.1343,1354, Aug. 2013.
[2]. B. Waters. Ciphertext-policy attribute-based encryption:An expressive, efficient, and provably secure realization in Proc. Public Key Cryptography, 2011, pp. 53–70.
[3]. VipulGoyal, OmkantPandey, AmitSahai, and Brent Waters. 2006. Attribute-based encryption for fine-grained access control of encrypted data. In Proceedings of the 13th ACM conference on Computer and communications security (CCS '06).ACM, New York, NY, USA, 89-98.
[4]. Matthew Green, Susan Hohenberger, and Brent Waters. 2011. Outsourcing the decryption of ABE ciphertexts. In Proceedings of the 20th USENIX conference on Security (SEC'11).USENIX Association, Berkeley, CA, USA, 34-34.
[5]. Dropboxnews.https:// www.dropbox.com/news.

The human body is made up of various fundamental organs, one of which is the lung. The lungs are divided into two halves, right lung and left lung, and its job is to exchange gas, which is referred to as breathing or respiration. The issue of human lungs is colossally expanding as a result of modern lifestyle and environmental contamination. Furthermore, several Image processing techniques are concocting a fantastic solution for the Medical industry to discover and assess lung diseases. This article considers and investigates a couple of those Image Processing methods. Preprocessing and highlight extraction from X-rays, as well as a Computer Tomography (CT) scan, are required by the Computer Aided Diagnosis (CAD) frameworks in order to analyse lung illnesses..

Key Word: Computer Aided Diagnosis (CAD), X-rays, Computer Tomography (CT), Lung Disease Diagnosis (LDD), Image Processing Technique, Lung Cancer, Classification.

[1]. American Cancer Society, "Cancer Statistics, 2005", CA: A Cancer Journal for Clinicians, 55: 10-30, 2005, "http://caonline.amcancersoc.org/cgi/content/full/55/1/10".
[2]. D. Lin and C. Yan, "Lung nodules identification rules extraction with neural fuzzy network", IEEE, Neural Information Processing, vol. 4, (2002).
[3]. A. El-Baz, A. A. Farag, PH.D., R. Falk, M.D. and R.L. Rocco, M.D., "detection, visualization, and identification of lung abnormalities in chest spiral CT scans: phase I", Information Conference on Biomedical Engineering, Egypt (2002).
[4]. B.V. Ginneken, B. M. Romeny and M. A. Viergever, "Computer-aided diagnosis in chest radiography: a survey", IEEE, transactions on medical imaging, vol. 20, no. 12 (2001).

In recent years, optical wireless communication has piqued corporate and academic attention. Information and communication technology has progressed rapidly during the last few decades. In our homes, offices, and on our mobile devices, we frequently use broadband technology with high-speed Internet connectivity. The rising use of the Internet and broadband services has raised our bandwidth and high-capacity requirements in the twenty-first century, far exceeding our expectations. Wireless optical communication (WOC) uses an optical carrier in the near-infrared (IR) and visible bands to achieve very high-speed and large-capacity communication networks. It's a laser-based line-of-sight communication system that sends data between two transceivers through an unguided channel, which could be the atmosphere or free space......

[1]. R.F. Lucy, K. Lang, Optical communications experiments at 6328 Å and 10:6 . Appl. Opt.

[2]. 7(10), 1965–1970 (1968)

[3]. M.S. Lipsett, C. McIntyre, R. Liu, Space instrumentation for laser communications. IEEE J.Quantum Electron. 5(6), 348–349 (1969) [4]. I. Arruego, H. Guerrero, S. Rodriguez, J. Martinez-Oter et al., OWLS: a ten-year history inoptical wireless links for intra-satellite communications. IEEE J. Sel. Areas Commun. 27(9),1599–1611 (2009)

[5]. S. Kazemlou, S. Hranilovic, S. Kumar, All-optical multihop free-space optical communicationsystems. J. Lightwave Technol. 29(18), 2663–2669 (2011)