Congenital fistulae between the tracheobronchial tree and oesophagus usually originate from the lower end of the trachea or right main bronchus. The case history is presented of a man in whom a fistula between the oesophagus and left main bronchus was not diagnosed until the age of 48.

although on the basis of geo-economic theories, study of energy-related issues is of strategic importance to all countries, energy resources are no more restricted to oil and gas reserves as was the case during the past century. of course, these resources are still key elements of global energy reserves. today, in addition to geo-politics and geo-economics, the concept of hydro-geopolitics puts...

A unique case of adenoid cystic carcinoma of the left main bronchus is reported.

The China-Pakistan Economic Corridor (CPEC) is a multi-billion-dollar collection of ongoing and planned Chinese projects in Pakistan ranging from infrastructure development to the establishment special economic zones sharing technical expertise by China. For China, it an integral part its ambitious Belt Road Initiative (BRI) through which aims establish hegemony Eurasia Africa. Pakistan, opport...

The similar material plays an important role in Geo-mechanical model test, and the proportion influences the test results directly. According to the physical and mechanical properties of the prototype, the cementitious material with good elastic-plastic for iron crystal sand (ISBM) was chosen as the similar material for the research on failure mechanism of surrounding rock under the environment...

In this paper, we will focus on the semantic heterogeneity problem as one of the main challenges in current Spatial Data Infrastructures (SDI). We first report the state of the art of the current approaches and proposed solutions to overcome such semantic heterogeneity problems, focusing both on geo-services integration and geo-data integration. We then propose a general framework to integrate ...