In the history of medicine, the human plague has been considered as one of the most terrifying fatal diseases that over centuries, killed millions of people. Three major pandemics took place between the 6th and 19th centuries, which profoundly impacted the world's socioeconomic status; however, the etiologic agent of the plague remained unknown up to the end of the 19th century. During the past...

since the 19th century, opium has been produced and consumed in the areas of asia, currently referred to as the golden crescent and the golden triangle (1). the golden crescent lies in south and southwest asia, including districts in the northwest frontier province of pakistan, the adjacent badakhshan area of afghanistan and the baluchistan area of iran. the area has been the scene of tradition...

Contents 1. Introduction. 2. Models of PDE 's in the 18th and 19th century. 3. Methods of calculating solutions in the 19th century. 4. Developments of rigorous theories of solvability in the last decades of the 19th century. 5. The period 18901900: the beginning of modern PDE and the work of Poincare. 6. The Hilbert programs. 7. S. Bernstein and the beginning of a priori estimates. 8. Solvabil...

Most 19th century scholars would have agreed to the opinion that philosophers are responsible for research on logic. On the other hand, the history of late 19th century logic clearly indicates a very dynamic development instigated not by philosophers, but by mathematicians. A central outcome of this development was the emergence of what has been called the “new logic”, “mathematical logic”, “sy...

Discordances of harmonic mental functioning are as old as the human kind. Psychopathological behaviour of an individual in the past was not treated as an illness. That means that psychopathology was not considered an illness. In all past civilizations discordance of mental harmony of an individual is interpreted from the physiological aspect. Psychopathologic expression was not considered an il...

The Upper Fremont Glacier (UFG), Wyoming, is one of the few continental glaciers in the contiguous United States known to preserve environmental and climate records spanning recent centuries. A pair of ice cores taken from UFG have been studied extensively to document changes in climate and industrial pollution (most notably, mid-19th century increases in mercury pollution). Fundamental to thes...