Effect of Bichamber Piston Geometry with Cerium Oxide as Additive on Sardine Biodiesel

High viscosity and low volatility are the major concern for the process of combustion.The combustion of biodiesel has an inbuilt draw back owing to its viscous nature and voltatile behaviour. In this work the modification of the chamber design is explored. The combustion chamber is altered with a meager level of modified design in order to enhance the efficiency of the mixture. The sardine oil methyl ester is used in this work with the addition of cerium oxide as a nano ingredient at a size of 25 ppm. The performance and emission chanracteristics is analysed in this work. A comparative study is done on sardine oil methyl ester with addition of nano particles. It is identified and both the performance and emission charactersitics is done with CI Engine. It is identified that the nano particles addition. The combustion of fuel after burning and reduction in exhaust gases emission value can be achieved by adding the nano particles

Fabrication and analysis of mechanical properties of PVC/Glass fiber/graphene nano composite pipes

The aim of this work is to examine the conventional moulding method for manufacturing the PVC/Glass fiber/graphene nano composites. Uniform graphene dispersion is observed with the matrix for better bonding. The Mechanical properties of the manufactured nano composites have been done in this work. Three important standard tests were evaluated for the performance of Nano-Composites developed. The composites were developed as flat specimen for pipe applications. The three standards test which includes axial tension, compression and transverse compression is studied. The graphene nano composites were varied 0.5%, 1%, 1.5% and 2 percentages. Based on the results it can be concluded that the increase in the percentages of graphene made a uniform dispersion, which leads to increase in the compressive strength of the Nanocomposite. Increase in the axial compressive strength and stiffness was observed and the increase in the trend value is mainly observed in 1.5 wt% and 2 wt% respectively. The Graphene dispersion and fractured surface morphology of nano composites were examined using scanning electronic microscopy (SEM).It can also be used as an alternative for metal pipes in industries

Multi-messenger observations of a binary neutron star merger

On 2017 August 17 a binary neutron star coalescence candidate (later designated GW170817) with merger time 12:41:04 UTC was observed through gravitational waves by the Advanced LIGO and Advanced Virgo detectors. The Fermi Gamma-ray Burst Monitor independently detected a gamma-ray burst (GRB 170817A) with a time delay of ~1.7 s with respect to the merger time. From the gravitational-wave signal, the source was initially localized to a sky region of 31 deg2 at a luminosity distance of 40+8-8 Mpc and with component masses consistent with neutron stars. The component masses were later measured to be in the range 0.86 to 2.26 Mo. An extensive observing campaign was launched across the electromagnetic spectrum leading to the discovery of a bright optical transient (SSS17a, now with the IAU identification of AT 2017gfo) in NGC 4993 (at ~40 Mpc) less than 11 hours after the merger by the One- Meter, Two Hemisphere (1M2H) team using the 1 m Swope Telescope. The optical transient was independently detected by multiple teams within an hour. Subsequent observations targeted the object and its environment. Early ultraviolet observations revealed a blue transient that faded within 48 hours. Optical and infrared observations showed a redward evolution over ~10 days. Following early non-detections, X-ray and radio emission were discovered at the transient’s position ~9 and ~16 days, respectively, after the merger. Both the X-ray and radio emission likely arise from a physical process that is distinct from the one that generates the UV/optical/near-infrared emission. No ultra-high-energy gamma-rays and no neutrino candidates consistent with the source were found in follow-up searches. These observations support the hypothesis that GW170817 was produced by the merger of two neutron stars in NGC4993 followed by a short gamma-ray burst (GRB 170817A) and a kilonova/macronova powered by the radioactive decay of r-process nuclei synthesized in the ejecta

Multi-messenger Observations of a Binary Neutron Star Merger

On 2017 August 17 a binary neutron star coalescence candidate (later designated GW170817) with merger time 12:41:04 UTC was observed through gravitational waves by the Advanced LIGO and Advanced Virgo detectors. The Fermi Gamma-ray Burst Monitor independently detected a gamma-ray burst (GRB 170817A) with a time delay of ∼ 1.7 {{s}} with respect to the merger time. From the gravitational-wave signal, the source was initially localized to a sky region of 31 deg2 at a luminosity distance of {40}-8+8 Mpc and with component masses consistent with neutron stars. The component masses were later measured to be in the range 0.86 to 2.26 {M}ȯ . An extensive observing campaign was launched across the electromagnetic spectrum leading to the discovery of a bright optical transient (SSS17a, now with the IAU identification of AT 2017gfo) in NGC 4993 (at ∼ 40 {{Mpc}}) less than 11 hours after the merger by the One-Meter, Two Hemisphere (1M2H) team using the 1 m Swope Telescope. The optical transient was independently detected by multiple teams within an hour. Subsequent observations targeted the object and its environment. Early ultraviolet observations revealed a blue transient that faded within 48 hours. Optical and infrared observations showed a redward evolution over ∼10 days. Following early non-detections, X-ray and radio emission were discovered at the transient’s position ∼ 9 and ∼ 16 days, respectively, after the merger. Both the X-ray and radio emission likely arise from a physical process that is distinct from the one that generates the UV/optical/near-infrared emission. No ultra-high-energy gamma-rays and no neutrino candidates consistent with the source were found in follow-up searches. These observations support the hypothesis that GW170817 was produced by the merger of two neutron stars in NGC 4993 followed by a short gamma-ray burst (GRB 170817A) and a kilonova/macronova powered by the radioactive decay of r-process nuclei synthesized in the ejecta.</p

A Pragmatic Perspective on the Implication of ICT: A Respiration and Inspiration of the Engineering Education

Indeed, in this epoch of technologies, the students of engineering are the architects of future India. A vast knowledge explosion has made the world shrivel into a global village, due to the augmentation in science and technology which enhances social change, i.e. the synchronism of Information and Communication Technology (ICT), has opened up new panorama for social and economic development. To meet the growing population and the growing demands of the society it is necessary to utilize the potential of ICT, need of the hour in all the fields for the nationalized human resource development. As there is a demand for adopting ICT, a dynamic tool, also in the field of education, this paper goes on discussing the implication of ICT imparted into a blended learning model that provides “simulated environments” by using approaches such as virtual campus, Modular Object Oriented Developmental Learning Environment (MOODLE), Android App, etc., to enable the students apply their knowledge and skills to solve problems, get learning experiences and help in broadening&nbsp; their understandings, knowledge, critical thinking and creative skills in the ground of Engineering. Beyond this, this report adds the tools, principles and ways in which ICT is used, and how it creates new learning opportunities

Operation approaches on α-γ-I-open sets and α-γ-I-continuous functions in topological spaces

In this paper, the notion of α-γ-I-open sets in a topological space together with its corresponding interior and closure operators are introduced. Further, the concept of α-γ-I-continuous functions and α-γ-I-open functions are introduced and some of their basic properties are studied

Nonlinear analysis of irregular temperature distribution in a heat exchanger using fractional derivative

A nonlinear system of fractional differential equations with variable specific heat was solved to investigate the heat transfer in a shell and tube heat exchanger. The fractional differential transform method (FDTM) is implemented to transform the governing nonlinear energy balance equations into recursive relations and algebraic expressions. Using inverse differential transform method, these recurrence equations are solved and the closed-form series solutions are obtained to predict the temperature distributions and the effect of variable-specific heat for different values of nonlinearity. The current results perfectly coincide with the solution obtained by the finite difference method. The irregular temperature distributions obtained for different values are statistically validated. The comparative study is carried out among the proposed FDTM, Fractional Generalized Homotopy Analysis Method and Homotopy Perturbation Method for the fractional system to strengthen the results. Using the reduced linear system of energy balance equations, the exit temperatures are predicted and the results are verified by the log mean temperature difference method. The obtained solutions reveal that with minimum computational effort FDTM can produce accurate results for nonlinear ordinary and partial differential equations, that often arise in the heat transfer analysis in a heat exchanger equipment