Volume 6 | Issue 2

 Abstract

Enhancements of mechanical properties and wear resistance of epoxy using bi-directional fibers (E-glass and basalt) and fillers namely graphite have been systematically investigated in the present study. Fiber reinforced epoxy (G-B/E) filled with graphite (0%, 2%, 4% and 6%) were fabricated using hand layup technique followed by compression molding. Tensile properties were determined to evaluate the effectiveness of graphite fillers on the mechanical properties. The two body abrasive wear behavior was assessed by using a pin on disc apparatus under different loads (10 and 20 N) and different sliding distances (100, 200, 300 and 400 m). Results show that filler improved the mechanical properties and the improvement is more pronounced with the incorporation of graphite filler. The enhanced performance of filler filled G-B/E composites is due to better adhesion and good dispersion of particulates in the epoxy matrix providing increased surface area for strong interfacial interaction and better load transfer. The wear test results indicate that addition of graphite in G-B/E hybrid composites have significant influence on wear behavior under varied sliding distance/loads. The most important concept of this paper is to strength the importance of integrating fibers and functional fillers in the design of wear resistant polymer matrix composites

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 Keywords

G-B/E composites, Graphite Filler, Mechanical properties. Wear properties.

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This paper presents two level data security in network system. Cryptographic algorithm BLOWFISH and Steganography algorithm least significant bit (LSB) are used for data security. Confidential information is encrypted by BLOWFISH algorithm, and then encrypted data hide into image by LSB algorithm of Steganography. For more security we used iris image of authorized person to hide encrypted data. The keys required for BLOWFISH algorithm is generated from same iris image. These two algorithms implemented on 32 bit ARM 7, gives better security for embedded systems like mobile, smart card, ATM etc.

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Blowfish, cryptography, steganography, least significant bit(LSB) , ARM7.

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Pushover Analysis, Capacity Spectrum, Vulnerability

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Traditional therapies, including the use of dietary components for wound healing and skin regeneration, are very common in Asian countries such as China and India. The increasing evidence of health-protective benefits of phytochemicals, components derived from plants is generating a lot of interest, warranting further scientific evaluation and mechanistic studies. Among different plants showing positive activity towards wound healing, Capparis spinosa-C. spinosa has many active constituents such as flavonoids such kaempferal and quercetin . Nature fruits of C. spinosahave glucose as 1-H Indole-3-acetonitrile etc, whereas C. zeylanica has reported to have fatty acids such as E-octodec-7enynoic acid isolated from chloroform extract of the roots . Extracts of C. decidua stems and flowers showed insecticidal and oviposition inhibitory activities against Bruchus chinensis. the photochemical from these plant extracts were found to possess significant wound healing promoting activity. In the present study, we have identified 12 potent active constituents viz., Capparispine, Glucocapparin, kaempferol, kaempferol-7-rhamnoside, Polyprenols, Proline betaine, Quercetin, Quercetin-3-rutinoside, Rhamnetin, Rutin, Saccharose, Sinigrin for wound healing promoting ability. These active constituents were subjected for docking study using a well established target GSK 3 Beta responsible for wound healing process in human. Our results, indicated that Capparispine, Glucocapparin, kaempferol, Polyprenols, Quercetin, Quercetin-3-rutinoside, Rhamnetin have a potent wound healing property among other compounds. In vivo/ in vitro studies to validate the present finding and to understand the exact mechanism and potential targets of these phytochemicals are under process

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 Keywords

Wound healing, Ethanol leaf extract, C. decidua, C. spinosa and C. Zeylanica, Antimicrobial activity, Docking

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This study presents Tambr, a new software for translating literature into audio using Topic Extraction and Sentiment Analysis for the way in which their timbre relates to the meaning and sentiment of the topics conveyed in the story. The durations, intervals and pitches of the output audio are generated using sentiment analysis which corresponds to sentiment of the text. Natural language processing algorithms are used for topic extraction in the text. Sentiment analysis is used to vary the intensity of the audio. The sounds generated by the system are very characteristics of ambiance music, as the emphasis was placed on selecting musical timbres that match with the themes of the text

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 Keywords

Topic Extraction, Sentiment Analysis, Natural Language Processing, Text Summary, Tambr

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Direct power transfer (DPT), integrated buck-buck-boost converter (IBuBuBo), power-factor correction (PFC), single stage, single-stage (SS), Simulink.

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In this article, the author reports a new class of Organic-inorganic Nano-composites (OINCs) prepared by electrophoretic codeposition (EPD) of electro-activated organic polymer matrix together with the inorganic nano- particles under the influence of dc electric field, followed by appropriate curing. The process utilises a commercial grade bifunctional epoxide polymer duly electro-activated and converted into an aqueous emulsion in which the nanoclay particulates (NP) of Montmorillonite (MMT) and Bentonite (BNT) are dispersed and ultrasonicated. The novel process permits the higher NP content beyond 8% by weight of the polymer in aqueous bath. EPD process parameters like, bath composition, applied voltage, time and electrode spacing, have been studied. The author highlights some results in one of the studies [7] showing significant improvement in physico-mechanical and dielectric properties, viz., adhesion (no peeling as per ASTM D-3359-87), corrosion resistance (after 800 h. exposure to 4% salt fog), increase in dielectric strength by about 2 times (36kV/mm), volume resistivity by 10 times (4.3 x 1016 ?cm) at 8% by weight MMT loading, as compared to the pristine polymer.

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 Keywords

Epoxy, Electrophoretic, Nanocomposite, Electrodeposition.

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The evolution of newly developed methods in the field of architecture and engineering tends to improve the constructional aspects of the structures. The structures to be constructed in the present era should differ itself from the structures build in the past, keeping in mind its strength and aesthetical behavior. For any high rise structure, its major concern is to withstand the lateral forces like wind or earthquake. Although a conventional structure almost rectify these happenings but the performances can be maximized by using a diagrid or shear wall configuration. The diagrid and the shear wall systems opposes the effect of lateral forces and also helps in minimizing the net cost of construction. The diagrids helps to counter the lateral forces acting on the structure by its angular arrangements at the periphery thus eliminating the columns at the exterior of the structure. The diagrids performances can also be increased by increasing the angles of the diagrids. The shear walls helps in countering off the net shear forces by positioning itself either at the edges, periphery or at the center of the structure. The analysis of the factors like story displacements, story shears, story drifts etc are carried out and compared for both the conventional and the above mentioned structural arrangements.

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 Keywords

Seismic effect, Story displacement, Story shear, Story drift, Diagrids.

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From the onset of the space era, both organic-matrix and metal-matrix composites (MMCs), with high specific stiffness and near-zero coefficient of thermal expansion (CTE), have been developed for space applications. Of the organic-matrix composites, graphite/epoxy (Gr/Ep) has been used in space for truss elements, bus panels, antennas, wave guides, and parabolic reflectors in the past 30 years. MMCs possess high-temperature capability, high thermal conductivity, low CTE, and high specific stiffness and strength. Those potential benefits generated optimism for MMCs for critical space system applications in the late 1980s. The purpose of this article is to detail the history, status, and opportunities of MMCs for space applications

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MMC,organic matrix,space era

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Power quality is an important measure to give standard quality of power supply to its customers. This paper presents a comprehensive set of PSCAD models used to simulate various power quality disturbances on linear and nonlinear loads. The models presented includes distribution of line faults, energization of transformer that are used to simulate voltage sag/swell. Capacitor bank switching model is used to simulate the oscillatory transient event, nonlinear load models to simulate triple harmonic and voltage notch generated from the load side and lastly electric arc furnace model used to simulate flicker disturbance are also presented. This paper presents simulation of each of the power quality disturbance using Power System Computer Aided Design (PSCAD) software

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PSCAD, power quality disturbances, harmonics, line faults, voltage sag/swell, flicker, EAF, induction motor, capacitive transients.

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In the present paper, we report the hydrocarbon degrading ability of A.flavus HQ010119 and Pencillium sp. KJ415574.1 fungal strains in used engine oil. Parameters viz., %Total petroleum hydrocarbon (TPH) analysis, BOD,COD analysis and ability to produce biosurfactant were assessed. Among the strain tested, A.flavus was able to degrade 50% of hydrocarbons followed by Pencillium sp. 46.42% degradation after 20 days of incubation

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Used engine oil, TPH, fungal isolates, biosurfactant

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In recent times, most of the financial transactions are done through smartphones. Financial transactions contain data of high confidentiality;therefore, security is a main concern in these transactions. Every transaction should be recorded, and this information must be made non-tamperable. Authentication and Authorization of users must be done to check the authenticity of the users to avoid misuse of the data from an intruder. The proposed Mutual Authentication Blockchain based ID as a Service [MABIDaaS] [10] helps to achieve this. Our system uses blockchain technology for storing the transaction details of the user, cloud storage services for access rights, and Trusted Execution Environment [TEE] [11] for a secure execution of the transaction through mobile phones. This paper shows how the proposed system can be used for mutual authentication between two mobile users by using digital signature [3], key set and records the transacted data in the blocks as the data inserted into the blocks cannot be manipulated.

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 Keywords

Blockchain, MABIDaaS, Digital Signature, Authentication, Key Generation, Access Rights.

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Lateral load resistance in seismic prone areas, has leads to damages to the structure, to overcome this under seismic excitation steel bracing has proved most effective systems against earthquake effect. RC frames in seismic areas has to design in such a way that they resist considerable amount of lateral loads. In this paper RC frame is analyzed with different bracing system such as X, K & ZX & various steel section such as ISA, ISMB, ISMC in zone-V area of India, by Non-linear static procedure, through ETABS software. The lateral loads are carried by bracing. In order that strength & stiffness is increased by using steel bracing in RC frame. In this 10(ten) models is analyzed with 3(three) bracing system of different section & without bracing. Thus the main purpose of analyzing is to known the structural behavior of bracing steel section for building, lateral displacement, and performance of bracing section applied on RC frame and to know the pushover process

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 Keywords

Pushover Analysis, Performance of Bracing Sections, Lateral Displacement, Base-Shear.

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NFV, VIM, vEPC, SDN, OPNFV

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Duringan earthquakestructures will suffer from severe damages due to the drastic variation in the lateral stiffness and strength. In most of the cases damages have occurred due to the presence of soft storey in the structure.It is clear in IS 1893 Part-1 (2016) that storeys below should not have stiffness lower than that of upper storeys.In this paper the dynamic analysis is done on a high-rise structure (G+29) to know the behaviour the structure under the influence of soft storey. This analysis is done by providing soft storeys at different levels in the structure by decreasing the column size when compared to the upper storeys. A comparative study is done between the symmetrical structure and structure having soft storeys at different levels in the structure. Storey displacement, drifts and stiffness of structure with soft storeys are compared with structure with no soft storey.

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storey displacement, drift and stiffness

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The recent advancements in technology have now enabled us to make low-cost machines for Real time applications. This paper presents a simple way of designing and implementing an automatic sheet metal cutting machine using easily available low-cost pneumatic, sensor & micro-controllers. A pressure from the pneumatic cylinder is enough for operating the shearing machine unit. The pressurized air from the compressor, actuates the pneumatic cylinder, power from the piston is transmitted to the shear cutting blades. Sheet metal is fed through the roller and the sensor fixed at a particular position senses the sheet and sends command to the blades to cut the sheet metal. This entirely eliminates the human intervention.

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Automatic Sheet cutting Machine, Sheet metal, Pneumatic, Microcontroller

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Since the early dawn of civilization, agriculture has been an intrinsic part of human life. When we look at the modern farming arena, we observe that this is rapidly changing. With the increased demand and rising production costs, farmers are looking for modern farming equipment's that could help them in cutting the cost and even reducethe labor hours. One such modern agricultural tool which is rising on horizon of agricultural advancements is an RF based AGriculturalRObot (AG-RO). These Autonomous robots are creating abundant curiosity and driving some of the great enthusiasts for its development from different dimensions of engineering. In this paper, we are implanting autonomous robotic machines to carry out agricultural tasks. This robot will be used to perform agricultural operations such as ploughing, seed sowing and water sprinkling. The objectives of the proposed system are to dig the soil, to plough the seeds and to provide irrigation system by spraying water with a pump automatically. The robot constitutes of ARM controller along with a geared dc motor and an RF decoder for driving the motor, a remote which consists of an assembly of switch array to send signals for designated movement, a microcontroller, an RF encoder, a pump and water sprinkler arrangement.The RF modules used here are STT-433 MHz Transmitter, STR-433 MHz Receiver, HT12E RF Encoder and HT12D RF Decoder. The control switches are interfaced to the RF transmitter through RF encoder. The encoder continuously reads the status of the switches, passes the data to the RF transmitter which then transmits the data to the AG-RO.

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 Keywords

- AG-RO, STR-433, RF Modules, ARM, Sprinkler.

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 Abstract

Tuberculosis is a common and deadly infectious disease caused by Mycobacteria. WHO estimates that one third of global population is infected with Mycobacterium tuberculosis. Tuberculosis is a Multidrug resistant since their are a lot of mutations occur in genes .Our study focused on uncharacterized mutated tuberculosis target identification by using Systems Biology Approach, which is used to find the better drug targets. From the advance search by using UniProt we observed seven receptors are the significant targets 2CCA,1P44, 3VZ1,3IFZ, 1KOR,2EYQ .Tuberculosis target candidates are screened and validated by docking studies using Auto dock Software .Analysis has revealed that among 14 ligands it has been observed that Josamycine and Rifapentine showed a better interaction score (-10.3 kcal/mol and -12.7 kcal/mol) and could be potential ligands. These potential ligands have also shown better ADMET properties in Insilico studies by using ADMET SAR software.

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 Keywords

Mycobacterium tuberculosis, Rifapentine

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A lot of people rely on content available on social media for making decisions. The possibility that anyone can post a review provides a golden opportunity for spammers to write spam reviews about products and services. Identifying these spammers and the spam content is a very important topic in field of research and although a considerable number of studies have been done recently, but so far, the methodologies put forth still barely detect spam reviews, and none of them show the importance of each extracted feature type. This propose a novel framework, named NetSpam, which utilizes spam features for modeling review datasets as heterogeneous information networks to map spam detection procedure into a classification problem in such networks. Using the importance of spam features help us to obtain better results in terms of different metrics experimented on real-world review datasets from Yelp and Amazon websites. The results show that NetSpam is better than the existing methods using the features like review-behavioral, user-behavioral, review-linguistic, user-linguistic.

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 Keywords

NetSpam, Social Network, Spammer, Spam Review, Fake Review, Heterogeneous Information Network

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An earthquake is a natural disaster which causes damages to the structures and responsible for loss of life. Earthquake refers to shaking of ground and is unpredictable. It is not possible to prevent the earthquake and thus attempts have been made to resist the earthquake forces acting on the structures. Base isolation is one of the effective method of resisting earthquake forces. They consist of rubber bearings which are sandwiched between superstructure and its foundation. These rubber bearings absorb earthquake energy thus resulting in energy dissipation. In this thesis work, an attempt is made to study the behavior of structures with and without base isolation system. Lead Rubber Bearings (LRBs) are used as an isolation system. Four models of plan 20m x 20m with different heights are modelled and analysed in ETABS 2016 software. Response spectrum method is carried out for the analysis of models. The models are analysed for two different zones of India. I.e. Zone II (low seismic risk) and Zone V (severe seismic risk) as per IS 1893:2002 (Part 1). From the analysis of fixed base models, maximum axial reaction is obtained and LRBs are designed manually as per Design of Seismic Isolated Structures by James M Kelly and Farzad Naeim. The parameters such as storey displacements, storey drifts and mode periods are compared between fixed base and isolated base models. It is found that, storey drifts are reduced in the building with isolated base. Storey displacements and mode periods are increased due to increase in the flexibility of isolated base building. Hence it is found that the use of base isolation system reduces the earthquake forces transferring to the superstructure.

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 Keywords

Base Isolation, Lead Rubber Bearings (LRBs), Response spectrum method, Storey displacements, Storey drifts, Mode periods.

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