A rare case of microscopically sized thymoma is described in a 56 year old man suffering from myasthenia gravis. Histological examination of the surgically removed thymus showed the presence of several epithelial thymoma-like islands. As controls, 100 thymuses obtained from consecutive necropsies were sampled: 4% of these cases showed epithelial islands. This case is further proof that "microsc...

Foam flooding (or injection of foam) is a common technology to enhance oil recovery. Although the effects of permeability on foam flooding were well studied in many laboratory experiments, little research has been focused on the specificity of low permeability. In this paper, a series of constant-quality nitrogen foam flow experiments were conducted to investigate the effects of permeability on...

BACKGROUND Malaria transmission is an extremely complex condition that is manifested differently in different parts of the world. In Pakistan, malaria is still endemic in many areas. Plasmodium vivax and Plasmodium falciparum are identified to be the most prevalent species of malaria in-Pakistan. A great deal of work regarding malarial transmission is available at regional level in Pakistan but...

The extensivity for the thermodynamics of general $D$-dimensional rotating black holes with or without a cosmological constant can be proved analytically, provided effective number microscopic degrees freedom and chemical potential are given respectively as $N=L^{D-2}/G, \mu= GTI_D/L^{D-2}$, where $G$ is variable Newton constant, $I_D$ Euclidean action $L$ length scale. In cases i.e. Myers-Perr...

Dematophytosis in domestic animals constitutes a constant source of infection for persons in contact with them. To have an epidemiological picture of zoophilic dermatophyte infections in Iran, a study has been carried out during a period of three years (1986-1989) in an attempt to find the causative dermatophytes which infect cats and cattle and also infected human subjects in contact with ...

In the present work, two asymmetric polymer membranes based on polyvinylidene fluoride (PVDF) and polyvinylpyrrolidone (PVP) with chitin and chitosan (as extractive agents) were synthesized through the phase inversion technique. The mechanisms of oriented process for the facilitated extraction of blue P3R dye across the as-prepared membranes were elucidated through different experiments. Furthe...

A microscopic model of thermal excitation the vibrational ground state a molecule interacting with condensed medium is developed. The master equation for evolution occupancies levels derived. rate constant limiting process molecular determined analytically. It shown that while this quantity independent temperature at low temperatures, by coinciding speed limit quantum transitions due to uncerta...