363 research outputs found
Performance evaluation of rice bran biodiesel in small size agricultural diesel engines
India is the second largest rice producing country in the world. The estimated yield of crude Rice Bran Oil (RBO) is about 400,000 tons of which only 50% is of edible grade, 50% of the total available rice bran oil is left unutilized due to the presence of active lipase in bran and lack of economic stabilization methods most of the bran is used as animal feed or for industrial application. One of the best ways for the potential utilization of RBO is the production of biodiesel. This study targets at finding the effects of the engine parameters to compare the performance of diesel and rice bran biodiesel blends. Rice Bran (RB) blends were found to be substitute for diesel fuel. Brake Thermal Efficiency (BTHE) was maximum for RB05 blend and minimum for RB20 blend. RB05 blend can be considered as a substitute for diesel with lower Brake Specific Fuel Consumption (BSFC) and Brake Specific Energy Consumption (BSEC), RB15 was found to have minimum smoke opacity. Keywords: Rice bran oil, Blend, Brake parameters and opacit
Study of Ionospheric Variability during the Storm of January, 2005 using GPS and DEMETER Satellite Measurements
The dual frequency Global Positioning System (GPS) receiver provides an opportunity to determine Total Electron Content (TEC) over the crest of equatorial ionization anomaly region Bhopal by taking advantage of the dispersive nature of the ionospheric medium. The TEC values observed for the geomagnetic storm of the January 2005 is used in this paper to discuss the behaviour of ionospheric total electron content (TEC) during geomagnetically disturbed period. Variation of TEC is studied in correlation with the geomagnetic index Dst and southward component of interplanetary magnetic field Bz. The TEC variability is found to vary between with the maximum negative excursion of Dst index during the geomagnetic storms days. Positive phase is observed. Maximum TEC variability is observed during the recovery phase of the storms. Electron and ion density measurements from the DEMETER satellite are compared with the TEC measurements. The study of storm time TEC behaviour is very important due to recent increase in satellite-based navigation applications. Keywords: Ionosphere, geomagnetic storms, GPS, DEMETER, TE
Emancipatory Ethical Social Media Campaigns: Fostering Relationship Harmony and Peace
Whilst emancipatory ethical social media campaigns play an imperative role for fostering relationship and facilitating peace, limited research has examined the motivational response from peace-promoting viral videos. This research scrutinizes the effects of a viral video titled “Peace Anthem”: a mash-up between Pakistani and Indian national anthems, performed by famous artists and broadcasted in the wake of Independence Day in India and Pakistan. We examine the effect of listening to the anthem medley on relationship harmony using a longitudinal study design and contribute to the burgeoning body of knowledge on peace music and relational musicology fostering relationship harmony. Study 1, consisting of 1048 cases, determines the effects of the likeability of the “Peace Anthem” and education on relationship harmony and it also examines the moderating role of education. Study 2 with 605 cases investigates the persistency of these effects over time. The results demonstrate significant relationships between the likeability of the “Peace Anthem” and education with relationship harmony as well as validate the moderating role of education. Although these effects decrease over time, there are noteworthy changes that consequently call for the persistence of ethical social media campaigns for stimulating peace. We discuss the policy implications of these findings and conclude with study limitations and recommendations for further research
Relativistic anisotropic charged fluid spheres with varying cosmological constant
Static spherically symmetric anisotropic source has been studied for the
Einstein-Maxwell field equations assuming the erstwhile cosmological constant to be a space-variable scalar, viz., . Two
cases have been examined out of which one reduces to isotropic sphere. The
solutions thus obtained are shown to be electromagnetic in origin as a
particular case. It is also shown that the generally used pure charge
condition, viz., is not always required for constructing
electromagnetic mass models.Comment: 15 pages, 3 eps figure
Emancipatory Ethical Social Media Campaigns: Fostering Relationship Harmony and Peace
Whilst emancipatory ethical social media campaigns play an imperative role for fostering relationship and facilitating peace, limited research has examined the motivational response from peace-promoting viral videos. This research scrutinizes the effects of a viral video titled “Peace Anthem”: a mash-up between Pakistani and Indian national anthems, performed by famous artists and broadcasted in the wake of Independence Day in India and Pakistan. We examine the effect of listening to the anthem medley on relationship harmony using a longitudinal study design and contribute to the burgeoning body of knowledge on peace music and relational musicology fostering relationship harmony. Study 1, consisting of 1048 cases, determines the effects of the likeability of the “Peace Anthem” and education on relationship harmony and it also examines the moderating role of education. Study 2 with 605 cases investigates the persistency of these effects over time. The results demonstrate significant relationships between the likeability of the “Peace Anthem” and education with relationship harmony as well as validate the moderating role of education. Although these effects decrease over time, there are noteworthy changes that consequently call for the persistence of ethical social media campaigns for stimulating peace. We discuss the policy implications of these findings and conclude with study limitations and recommendations for further research
Breeding more crops in less time: A perspective on speed breeding
Breeding crops in a conventional way demands considerable time, space, inputs for selection, and the subsequent crossing of desirable plants. The duration of the seed-to-seed cycle is one of the crucial bottlenecks in the progress of plant research and breeding. In this context, speed breeding (SB), relying mainly on photoperiod extension, temperature control, and early seed harvest, has the potential to accelerate the rate of plant improvement. Well demonstrated in the case of long-day plants, the SB protocols are being extended to short-day plants to reduce the generation interval time. Flexibility in SB protocols allows them to align and integrate with diverse research purposes including population development, genomic selection, phenotyping, and genomic editing. In this review, we discuss the different SB methodologies and their application to hasten future plant improvement. Though SB has been extensively used in plant phenotyping and the pyramiding of multiple traits for the development of new crop varieties, certain challenges and limitations hamper its widespread application across diverse crops. However, the existing constraints can be resolved by further optimization of the SB protocols for critical food crops and their efficient integration in plant breeding pipelines
Comparative study on seasonal variation in hydro-chemical parameters of Ganga River water using comprehensive pollution index (CPI) at Rishikesh (Uttarakhand) India
The assessment of the Ganga River System at Rishikesh was investigated at five different sites for three different seasons (summer, winter and monsoon) using comprehensive pollution index (CPI), considering 10 physicochemical parameters such as conductivity, turbidity, total dissolved solids, dissolved oxygen, biochemical oxygen demand, chemical oxygen demand, total hardness, Cl, phosphate and sulphate. The CPI was found to be 0.54–2.47, which indicates the variation in pollution level of the River Ganga. The variation in pollution index value clearly shows that water quality was slightly polluted in winter (0.54–0.72) and summer (0.64–0.88) whereas high contamination (1.68–2.47) was observed during monsoon season. Among various sampling stations, Pashulok Barrage (Site 5) was more contaminated than other sites. All the studied parameters were under the permissible limit of W.H.O. (2011) except turbidity, total solids and suspended solids which were higher than the permissible limit. This study also illustrates the correlation between parameters by developing correlation matrix. The result of this study clearly elucidates that the water quality is getting contaminated as we moved from upstream to downstream of river and helps to understand the potential effects of water quality on drinking, irrigation and other purposes
Some anisotropic universes in the presence of imperfect fluid coupling with spatial curvature
We consider Bianchi VI spacetime, which also can be reduced to Bianchi types
VI0-V-III-I. We initially consider the most general form of the energy-momentum
tensor which yields anisotropic stress and heat flow. We then derive an
energy-momentum tensor that couples with the spatial curvature in a way so as
to cancel out the terms that arise due to the spatial curvature in the
evolution equations of the Einstein field equations. We obtain exact solutions
for the universes indefinetly expanding with constant mean deceleration
parameter. The solutions are beriefly discussed for each Bianchi type. The
dynamics of the models and fluid are examined briefly, and the models that can
approach to isotropy are determined. We conclude that even if the observed
universe is almost isotropic, this does not necessarily imply the isotropy of
the fluid (e.g., dark energy) affecting the evolution of the universe within
the context of general relativity.Comment: 17 pages, no figures; to appear in International Journal of
Theoretical Physics; in this version (which is more concise) an equation
added, some references updated and adde
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