ATLBS Extended Source Sample: The evolution in radio source morphology with flux density

Based on the ATLBS survey we present a sample of extended radio sources and derive morphological properties of faint radio sources. 119 radio galaxies form the ATLBS-Extended Source Sample (ATLBS-ESS) consisting of all sources exceeding 30" in extent and integrated flux densities exceeding 1 mJy. We give structural details along with information on galaxy identifications and source classifications. The ATLBS-ESS, unlike samples with higher flux-density limits, has almost equal fractions of FR-I and FR-II radio galaxies with a large fraction of the FR-I population exhibiting 3C31-type structures. Significant asymmetry in lobe extents appears to be a common occurrence in the ATLBS-ESS FR-I sources compared to FR-II sources. We present a sample of 22 FR-Is at z>0.5 with good structural information. The detection of several giant radio sources, with size exceeding 0.7 Mpc, at z>1 suggests that giant radio sources are not less common at high redshifts. The ESS also includes a sample of 28 restarted radio galaxies. The relative abundance of dying and restarting sources is indicative of a model where radio sources undergo episodic activity in which an active phase is followed by a brief dying phase that terminates with restarting of the central activity; in any massive elliptical a few such activity cycles wherein adjacent events blend may constitute the lifetime of a radio source and such bursts of blended activity cycles may be repeated over the age of the host. The ATLBS-ESS includes a 2-Mpc giant radio galaxy with the lowest surface brightness lobes known to date.Comment: 69 pages, 119 figures, 4 tables, to appear in ApJ

Accuracy Optimization of Centrality Score Based Community Detection

Various concepts can be represented as a graph or the network. The network representation helps to characterize the varied relations between a set of objects by taking each object as a vertex and the interaction between them as an edge. Different systems can be modelled and analyzed in terms of graph theory. Community structure is a property that seems to be common to many networks. The division of the some objects into groups within which the connections or relations are dense, and the connections with other objects are sparser. Various research and data points proves that many real world networks has these communities or groups or the modules that are sub graphs with more edges connecting the vertices of the same group and comparatively fewer links joining the outside vertices. The groups or the communities exhibit the topological relations between the elements of the underlying system and the functional entities. The proposed approach is to exploit the global as well as local information about the network topologies. The authors propose a hybrid strategy to use the edge centrality property of the edges to find out the communities and use local moving heuristic to increase the modularity index of those communities. Such communities can be relevantly efficient and accurate to some applications. DOI: 10.17762/ijritcc2321-8169.15073

The Stories We Tell: Colorblind Racism, Classblindness, and Narrative Framing in the Rural Midwest

The stories we tell about ourselves and our communities have the power to impact perceptions of marginalized communities, both positively and negatively. Narratives affect how people view themselves, their town, and other members of their community and thus shape personal interactions, local culture, social situations, and even decisions about allocation of resources. When those stories are rooted in discursive frames—what we can understand as the links between ideology and narrative—they can also perpetuate and reify power inequities. Within rural America, local elites and residents alike use narratives and discursive framing to erase or exclude communities of color and, at times, poor whites in unique ways. This happens through explicit and willful ignorance of narratives of difference that could both complicate normative assumptions and highlight histories of dispossession within rural towns. Drawing on 30 interviews and 12 months of ethnography in the midwestern town of Moses, we provide a case study that demonstrates how narratives perpetuated by both decision makers and residents, across racial and class backgrounds, are rooted in colorblind racism and classblindness regarding African Americans, Mexican Americans, and poor whites. These narratives frame perceptions of residents and neighborhoods, influence town-level decisions, and erase local histories

Utilization of Jamun Fruit (Syzygium Cumini) for Production of Red Wine

Jamun (Syzygium cumini) fruit was utilized for the production of red wine which is offering a lot of health benefits by acting as an effective medicine. The alcohol content of wine varied from 6.62 to 10.25 depending upon the variable concentration of total soluble sugars (7.88 to 10.53%) and varying levels of yeast (5, 10, 15 and 20%). Saccharomyces cerevisiae was used in the process of fermentation. The wine that had 8.22% alcohol obtained by fermentation with 10% yeast level, 8.18% TSS (Treatment T2) was considered to be the best acceptable when compared with others (T1, T3 and T4 Treatments). This wine was found to be the best by the panel members with respect to colour, taste, astringency and flavour. The wine that had 6.62% alcohol obtained by fermentation with 5% yeast level, 7.88% TSS was considered to be the least preferred and less acceptable when compared with others. No significant changes were observed in colour and clarity of wine obtained with 5% addition of yeast. However, with 5% addition of yeast, the taste, flavor and astringency attributes of wine were the least preferred when compared with others. The highest test score for taste, flavour and astringency properties was obtained for Treatment (T2). The time required for fermentation was 7 days at 28 ± 20C. The wine obtained with 15% (9.16% alcohol content) and 20% (10.25% alcohol content) yeast levels were found to have moderately acceptable scores

Green extraction of glycosides from Stevia rebaudiana (Bert.) with low solvent consumption: A desirability approach

The sweet flavor of Stevia rebaudiana (Bert.) leaf extract is well known and has raised the interest of huge food companies due to its natural bid. The extraction of their main glycosides stevioside and rebaudioside A is an important step on the preparation of final Stevia granules. The aim of the work reported here was to study and optimize the dynamic maceration of Stevia leaves using water and ethanol as green solvents. For instance, a fractional factorial design was chosen to evaluate the individual effects of the drug powder size, weight ratio of drug to solvent, temperature, agitation, and time on the yield of these glycosides. The glycosides were quantified by high pressure liquid chromatography. An exhaustive extraction by successive maceration steps showed that ethanol 70% was superior to water and ethanol 90% for stevioside and rebaudioside extraction. The liquid extract composition in dry basis and the yield of stevioside and rebaudioside A were significantly affected by the drug to solvent weight ratio, showing that larger volumes of solvent should be used. Furthermore, increasing solvent volume favors the extraction of the stevioside by a twofold factor as compared to rebaudioside A. Among the other factors, only drug powder size affected the yield of rebaudioside A significantly. The optimal solution for S. rebaudiana leaves dynamic extraction estimated by desirability functions methodology led to a condition which allows obtaining extraction yields of 2.31 and 1.24% for stevioside and rebaudioside A and their concentrations in dried extract corresponding to 8.38 and 4.51%, respectively. These high yields were obtained with drug to solvent ratio (1:10, w/w) much higher than previous works, thus resulting in a more sustainable and green process

TREATMENT OF MOUTH ULCER BY CURCUMIN LOADED THERMOREVERSIBLE MUCOADHESIVE GEL: A TECHNICAL NOTE

Objective: Mouth ulcer is one of the commonest disorders caused due to a variety of etiological factors. Although many formulations like solution, suspension and ointments are commercially available, no therapy can be said completely useful for the treatment of mouth ulcers. The efficacy of the therapy can be improved by the approach of bio adhesion. The phenomenon of sol to gel conversion can be useful due to its ease of administration compared to gel formulations. Curcumin is known to have wound healing, anti-carcinogenic and anti-bacterial activities can be effective in treatment of mouth ulcers.Methods: Hence, the present study was aimed to formulate Thermo reversible Mucoadhesive Gel (TMG) containing Curcumin for treatment of mouth ulcer. Formulations were prepared by using Pluronic F68 and Pluronic F127 as thermo reversible agent along with carbomers and Xanthan gum as bioadhesive polymers. The formulations were characterized for gelation temperature, pH, gel strength, spreadability, in vitro muco adhesion and in vitro drug release.Results: Increase in the concentration of mucoadhesive agent enhanced the mucoadhesive force significantly. All batches were found to be satisfactory results for gelation temperature, Gel strength, Muco adhesion studies, Spreadability, gelling capacity, In-vitro drug release etc. The formulations delivered drug for about 4 h.Conclusion: The obtained results show that the residence time as well as the contact area of curcumin at the ulcer can be enhanced along with a sustained release. It can be concluded that TMG of Curcumin can be ideal candidate for mouth ulcer.Â

Study of interaction effect between a line inclusion and a hole using Digital Photoelasticity

The ease of fabrication and superior mechanical properties has emerged the new application areas for short-�bre-reinforced-polymers (SFRP). These SFRP has a new range of performance capabil- ities and is designed to �ll the property gap between polymers and sophisticated continuous-�bre- reinforced-polymers (CFRP). Increased applications of composite materials have also increased the need of defects studies and e�ect of these defects on their mechanical and other properties too. The most common and much intense defect observed in the composite materials is porosity, the presence of voids in the matrix phase. The void content is the potentially harmful defect in the composite materials and can signi�cantly a�ect the mechanical properties. In case of SFRPs, �bre end singularity problems are often modelled and studied as �bres as inclusions where the focus is on �nding fracture parameters like stress intensity factor. The present study is devoted to exploring the e�ect of void on the fracture properties, in case of SFRPs. This problem is studied for the simplest form where the voids are modelled for the 2D case, i.e. a circular hole near the �bre. Hence the problem solved is a rigid line inclusion(indicates �bres) with a hole(indicates 2D voids) embedded in a matrix-resin. There are two reasons for modelling the �bre as a rigid line inclusion. First is the thickness of the steel inclusion, that we have used, is very small compared to other specimen dimensions. Second is the strength of the steel is very high compared to the strength of matrix-resin which is such true case in SFRP where �bre has more strength than that of the matrix material. Instead of stress intensity factor, strain intensity factor is used for quantifying the singularities at the tip of the inclusion because it is more appropriate to use in case of inclusion problems. Further, the variation of strain intensity factor with respect to three parameters, namely diameter of a hole, length of line inclusion and the distance between the inclusion and a hole is studied. We have used a numerical methodology, based on the reciprocal theorem, to calculate the strain intensity factor of the inclusion in the �nite geometry. The input to this method is the actual elasticity solution, which is obtained using �nite element analysis (FEA). Furthermore, these FEA models are validated using the experimental technique, Digital Photoelasticity, qualitatively and quantitatively as well