Grain orientation in high Tc superconductors by molten salt powder synthesis

The molten salt or the flux method is used to fabricate a grain oriented YBa2Cu3O(7-x) (123) superconductor. Here we suggest a two-stage approach in using the 'green phase', Y2BaCuO5 (211), as seed crystals in the formation of YBa2Cu3O(7-x). The process uses Y2BaCuO5 formed by molten salt synthesis. The Y2BaCuO5 phase was observed to be stable in water and in most of the salt systems. Salt processing can form a small quantity of anisotropic particles of Y2BaCuO5. This material can form the 123 phase when tape cast and sintered in the presence of the required levels of Ba and Cu

A Novel Design of Multi-Chambered Biomass Battery

In this paper, a novel design of biomass battery has been introduced for providing electricity to meet the lighting requirements of rural household using biomass. A biomass battery is designed, developed and tested using cow dung as the raw material. This is done via anaerobic digestion of the cow dung, and power generation driven by the ions produced henceforth. The voltage and power output is estimated for the proposed system. It is for the first time that such a high voltage is obtained from cow dung fed biomass battery. The output characteristics of this novel battery design have also been compared with the previously designed battery

Axions as Quintessence in String Theory

We construct a model of quintessence in string theory based on the idea of axion monodromy as discussed by McAllister, Silverstein and Westphal arXiv:0808.0706. In the model, the quintessence field is an axion whose shift symmetry is broken by the presence of 5-branes which are placed in highly warped throats. This gives rise to a potential for the axion field which is slowly varying, even after incorporating the effects of moduli stabilization and supersymmetry breaking. We find that the resulting time dependence in the equation of state of Dark Energy is potentially detectable, depending on the initial conditions. The model has many very light extra particles which live in the highly warped throats, but these are hard to detect. A signal in the rotation of the CMB polarization can also possibly arise.Comment: 41 pages, 1 figure, v2: references adde

Marketing of Library and Information Products and Services – A Reoriented Digital Marketing Approach

The purpose of this paper is to provide a new reoriented approach to the Marketing of Library and Information Products and Services for the survival of the libraries in the future. The paper tried to explore digital tools and techniques as a part of the reoriented approach. Libraries and information centers struggle mightily in the digital age to advertise their products and services to a wide variety of users. The digitally sophisticated audience cannot be reached or engaged with using traditional marketing techniques. This paper presents literature review of the available literature with a view on reorientation of Marketing of Library and Information Products and Services. Various digital marketing techniques are examined in the article along with their possible advantages and drawbacks. These include content marketing, social media marketing, search engine optimisation, email marketing, and analytics. This paper explores the way by which new products and services can be offered. The surveyed literature finds repetition of the work already done as well as the products and services on offer. There is hardly any new development or offerings. This paper presents original view of the author based on his experience and the surveyed literature. The paper is of extreme importance to the library professionals

Inflation from D3-brane motion in the background of D5-branes

We study inflation arising from the motion of a BPS D3-brane in the background of a stack of k parallel D5-branes. There are two scalar fields in this set up-- (i) the radion field R, a real scalar field, and (ii) a complex tachyonic scalar field chi living on the world volume of the open string stretched between the D3 and D5 branes. We find that inflation is realized by the potential of the radion field, which satisfies observational constraints coming from the Cosmic Microwave Background. After the radion becomes of order the string length scale l_s, the dynamics is governed by the potential of the complex scalar field. Since this field has a standard kinematic term, reheating can be successfully realized by the mechanism of tachyonic preheating with spontaneous symmetry breaking.Comment: 10 pages, 4 figures. Minor clarifications and references added. Version to appear in Phys. Rev.

Review Paper on Opinion Extraction of Drug Reviews Using PAMM

By the drastic reputation of net, the have a look at of on line critiques via blogs, dialogue boards and so on., have become maximum famous manner for the sufferers to have drug treatments for continual diseases. In this various research parameters for opinion extraction of drug opinions and techniques used in it. A probabilistic idea is developed to extract useful information from those opinions called as PAMM(Probabilistic aspect Mining model). PAMM has a particular function that it concentrates on locating opinion aspect associated with one magnificence as opposed to locating element for all instructions simultaneously on each execute on. This reduces the chances of blended standards of other training. The components discovered are also responsible to differentiate a class from other training. The paper offers idea to advocate an efficient EM algorithm to advise opinion aspects for diverse groups of a while. An EM algorithm is used for finding approximate parameters of an underlying distribution from information set when it has missing values