Wormhole supported by dark energy admitting conformal motion

In this article, we study the possibility of sustaining a static and spherically symmetric traversable wormhole geometries admitting conformal motion in Einstein gravity, which presents a more systematic approach to search a relation between matter and geometry. In wormhole physics, the presence of exotic matter is a fundamental ingredient and we show that this exotic source can be dark energy type which support the existence of wormhole spacetimes. In this work we model a wormhole supported by dark energy which admits conformal motion. We also discuss the possibility of detection of wormholes in the outer regions of galactic halos by means of gravitational lensing. The studies of the total gravitational energy for the exotic matter inside a static wormhole configuration are also done.Comment: 9 pages, 2 tables and 4 figures, Accepted for Publication in European Physical Journal

Anisotropic magneli phase Ti-suboxides in β- cyclodextrin template - Enhanced charge separation upon gold doping

Substoichiometric titanium oxides i.e. Magneli phase (MP) TiOx are attractive due to their conductive nature. However, their synthesis is challenging. In this work, Anisotropic MP- Ti4O7 nanoparticles and Au doped nanocomposites were synthesized using β- cyclodextrin as template. The MP nanomaterials were 20-30 nm in size. The synthesis conditions were mild. These MP- TiOx nanomaterials show efficient charge separation upon light excitation i.e. they (i) act as efficient photocatalysts; (ii) they can be sensitized by a fluorescent dye; (iii) finite element method (FEM) simulations indicate substantial interfacial plasmonic charge generation at the metal-semiconductor interface in the doped nanocomposites.DST FIST Phase II grant of the Department of Chemistry, University of KalyaniUniversity of Kalyani in the form of Personal Research Grant for TeachersDST-INSPIRE, Govt. of India for research fellowship [Ref. No.IF170689], [Ref. No.IF170936

Developing Gram Panchayats in a Backward District: A Scoping Study on Gaya, Bihar

The earliest village republics of India can be traced back to areas which are now in the state of Bihar. The colonial intervention significantly altered the village communities in India and therefore Bihar as well and created a new form of local governance system following the Mayo Resolution of 1870. In 1885 the Bengal Local Self Government Act created district boards and local boards at the district and sub-divisional levels. In 1922 The Bihar and Orissa Village Administration Act created fully elected union boards and also a few elected Panchayats. After independence the Bihar Panchayat Raj Act of 1947 was enacted. By 1957 a total of 7,670 Panchayats were in place in the state. The Bihar Panchayat Samiti and Zilla Panchayat Act of 1961 created the Block and Zilla Panchayats. By 1970 all three tiers of the Panchayats were operational in the state. Following the Ashok Mehta Committee report in 1978 elections were held to the panchayats

Removal of Cr (VI) by synthesized titania embedded dead yeast nanocomposite: Optimization and modeling by response surface methodology

The efficiency of organic biomass towards heavy metal remediation can be enhanced by inclusion of inorganic nanomaterials. In this study, nanocomposite was synthesized by dead yeast biomass and titania nanoparticles through immobilization method. The nanocomposite was further applied into spiked water and real effluent of tannery for effective sorption of Cr (VI). The nanocomposite was characterized using FESEM, TEM, BET, XRD, FTIR, and XRF analysis. Excellent potential of Cr (VI) removal efficiency (99.92) was observed at varied operational conditions by using the nanocomposite. The quadratic model resulted from optimization predicted the response from the input limits. The equilibrium data obtained from sorption process was fitted both in Langmuir and Freundlich isotherm model. Langmuir adsorption isotherm showed significantly high monolayer sorption capacity (162.07mgg�1) of the nanocomposite. The kinetics of the process was described by Pseudo-second-order model and the thermodynamic study showed an exothermic and spontaneous Cr (VI) sorption process. Desorption and reuse of the nanocomposite material had insignificant effect on Cr (VI) rejection efficiency

Anisotropic magneli phase Ti-suboxides in β- cyclodextrin template - Enhanced charge separation upon gold doping

Substoichiometric titanium oxides i.e. Magneli phase (MP) TiOx are attractive due to their conductive nature. However, their synthesis is challenging. In this work, Anisotropic MP- Ti4O7 nanoparticles and Au doped nanocomposites were synthesized using β- cyclodextrin as template. The MP nanomaterials were 20-30 nm in size. The synthesis conditions were mild. These MP- TiOx nanomaterials show efficient charge separation upon light excitation i.e. they (i) act as efficient photocatalysts; (ii) they can be sensitized by a fluorescent dye; (iii) finite element method (FEM) simulations indicate substantial interfacial plasmonic charge generation at the metal-semiconductor interface in the doped nanocomposites

Evaluation of a rapid immunochromatographic dipstick Kit for diagnosis of cholera emphasizes its outbreak utility

We evaluated the Crystal VC(R), a commercially produced dipstick, for the rapid detection of Vibrio cholerae serotypes O1 and O139 directly from the stool samples of hospitalized diarrheal patients using the conventional bacteriological method as gold standard. The sensitivity and specificity of the dipsticks were about 92 and 73%, respectively. Introduction of the PCR-based method along with the classical bacteriological method as the gold standard for the evaluation of a kit may improve the sensitivity and specificity of the assay. The dipstick method requires minimal technical skill, and the test can be read in about 10 min. This dipstick test has the potential to act as an early warning system for cholera in many developing countries, especially during the start of an outbreak, which would ultimately lead to a decrease in the spread of the disease as well as the case fatality rate. Furthermore, the use of a rapid detection test will improve surveillance and thus reduce the burden of disease estimates, especially in remote settings

Syntheses, structures and efficient catalysis for C–C coupling of some benzaldehyde thiosemicarbazone complexes of palladium

Reaction of the 4-R-benzaldehyde thiosemicarbazones (denoted in general as L-R; R = OCH(3), CH(3), H, Cl and NO(2)) with trans-[Pd(PPh(3))(2)Cl(2)] afforded a group of mixed-ligand complexes (denoted in general as 1-R) incorporating a N,S-coordinated thiosemicarbazone. a triphenylphosphine and a chloride. Similar reaction with Na(2)[PdCl(4)] afforded a family of bis-thiosemicarbazone complexes (denoted in general as 2-R), where each ligand is N,S-coordinated. Crystal structures of 1-CH(3), 1-NO(2), 2-OCH(3), 2-NO(2) and L-NO(2) have been determined. In all the complexes the thiosemicarbazones are coordinated to the metal center, via dissociation of the acidic proton, as bidentate N,S-donors forming five-membered chelate rings. With reference to the structure of the uncoordinated thiosemicarbazone, this coordination mode is associated with a conformational change around the C=N bond. All the 1-R and 2-R complexes display intense absorptions in the visible region. Catalytic activity of the 1-R and 2-R complexes towards some C-C coupling reactions (e.g. Suzuki, Heck and Sonogashira) has been examined and while both are found to be efficient catalysts, 1-R is much better catalyst than 2-R