Quasi-local black hole horizons

This article introduces the subject of quasi-local horizons at a level suitable for physics graduate students who have taken a first course on general relativity. It reviews properties of trapped surfaces and trapped regions in some simple examples, general properties of trapped surfaces including their stability properties, the definitions and some applications of dynamical-, trapping-, and isolated-horizons.Comment: 41 pages, 12 Figures. To appear in the Springer Handbook of Spacetime, Springer Verlag (2013

Bubble Distribution in Fused Obsidian and Slide Glass

In this report we obtain further data about the distribution of bubbles in glass. It gives the results obtained from the microscopic study of obsidian samples heated with an oxyacetylene torch and from powdered microscopic slide glass re-fused in an electric oven. This report continues our earlier study of the distributions: Badri Aghassi, 1961, B.U. Tektite Project, Research Report No. 11

Experimental rat models of chronic allograft nephropathy: a review

Chronic allograft nephropathy (CAN) is the leading cause of late allograft loss after renal transplantation (RT), which continues to remain an unresolved problem. A rat model of CAN was first described in 1969 by White et al. Although the rat model of RT can be technically challenging, it is attractive because the pathogenesis of CAN is similar to that following human RT and the pathological features of CAN develop within months as compared with years in human RT. The rat model of RT is considered as a useful investigational tool in the field of experimental transplantation research. We have reviewed the literature on studies of rat RT reporting the donor and recipient strain combinations that have investigated resultant survival and histological outcomes. Several different combinations of inbred and outbred rat combinations have been reported to investigate the multiple aspects of transplantation, including acute rejection, cellular and humoral rejection mechanisms and their treatments, CAN, and potential targets for its prevention

Tidal deformations of spinning black holes in Bowen-York initial data

We study the tidal deformations of the shape of a spinning black hole horizon due to a binary companion in the Bowen-York initial data set. We use the framework of quasi-local horizons and identify a black hole by marginally outer trapped surfaces. The intrinsic horizon geometry is specified by a set of mass and angular-momentum multipole moments $\mathcal{M}_n$ and $\mathcal{J}_n$ respectively. The tidal deformations are described by the change in these multipole moments caused by an external perturbation. This leads us to define two sets of dimensionless numbers, the tidal coefficients for $\mathcal{M}_n$ and $\mathcal{J}_n$, which specify the deformations of a black hole with a binary companion. We compute these tidal coefficients in a specific model problem, namely the Bowen-York initial data set for binary black holes. We restrict ourselves to axisymmetric situations and to small spins. Within this approximation, we analytically compute the conformal factor, the location of the marginally trapped surfaces, and finally the multipole moments and the tidal coefficients.Comment: 22 pages, 1 figur

Unveiling Protectionism: Regional Responses to Remaining Barriers in the Textiles and Clothing Trade

this chapter focuses on some major domestic issues that encompass supply and demand in textile and apparel sector in India.textile and apparel sector, domestic supply and demand, India

Effects of trade liberalisation, environmental and labour regulations on employment in India's organised textile sector

In recent years, employment has fallen in the organised textile sector despite an aggregate rise in output and capital. This paper analyses the role of various factors that influence employment using 3-digit classification of Indian textile industry from 1973-74 to 1997-98. Our results document that the fall in employment can be explained in terms of rise in wages, output shocks, lack of capital utilisation and trade restrictiveness pertaining to Multi Fibre Arrangement (MFA). Environmental regulations enhance employment in the sub-sectors that are most likely to be influenced by them. The results are robust to dierent measures of capital, its utilisation and disaggregation to statelevel. We also illustrate that in a post-MFA regime, employment in the sector is bound to increase owing to absence of trade restrictions and prospects of huge investment in general and in complying with environmental regulations, though the labour regulations might affect the magnitude of that increase.

Effects of Trade liberalisation, Environmental and Labour Regulations on Employment in India's Organised Textile Sector

In recent years, employment has fallen in the organised textile sector despite an aggregate rise in output and capital. This paper analyses the role of various factors that in uence employment using 3- digit classication of Indian textile industry from 1973-74 to 1997-98. Our results document that the fall in employment can be explained in terms of rise in wages, output shocks, lack of capital utilisation and trade restrictiveness pertaining to Multi Fibre Arrangement (MFA). Environmental regulations enhance employment in the sub-sectors that are most likely to be in uenced by them. The results are robust to dierent measures of capital, its utilisation and disaggregation to statelevel. We also illustrate that in a post-MFA regime, employment in the sector is bound to increase owing to absence of trade restrictions and prospects of huge investment in general and in complying with environmental regulations, though the labour regulations might aect the magnitude of that increase.Trade Liberalisation, environmental regulations, Labour Regulations, Employment, India, Textile

Biological Pathways and Potential Targets for Prevention and Therapy of Chronic Allograft Nephropathy

Renal transplantation (RT) is the best option for patients with end-stage renal disease, but the half-life is limited to a decade due to progressive deterioration of renal function and transplant failure from chronic allograft nephropathy (CAN), which is the leading cause of transplant loss. Extensive research has been done to understand the pathogenesis, the biological pathways of fibrogenesis, and potential therapeutic targets for the prevention and treatment of CAN. Despite the advancements in the immunosuppressive agents and patient care, CAN continues to remain an unresolved problem in renal transplantation. The aim of this paper is to undertake a comprehensive review of the literature on the pathogenesis, biological pathways of RT fibrogenesis, and potential therapeutic targets for the prevention and therapy of CAN