South America" is considerably more general and simply comments on what is known about what had happened in the past and what has been observed in recent expeditions rather than attempting a compilation. Few aspects of medical investigation are untouched by this book and the discussions and references range from the high estrogen levels in African Bushmen to high altitude performance to the gen...

after 1860’s the railway systems has started to be used in urban transportation in the world. however, especially after the 1950’s, automobile usage has been increased quickly. thus the dense of transportation has started to move from railway systems to the ones with rubber tire vehicles in istanbul. traffic density in urban transportation has started to be experienced since 1950 with the incre...

Jane Marion Oppenheimer [5], embryologist and historian of science and medicine, was born on 19 September 1911 in Philadelphia, Pennsylvania, to Sylvia Stern and James H. Oppenheimer. After studying zoology at Bryn Mawr College [6], Oppenheimer received her AB degree in 1932. Oppenheimer received her PhD in embryology [7] at Yale University [8] in 1935 and worked as a research fellow from 1935?...

1. Setting up the foundations 3 2. The Eilenberg-Steenrod axioms 4 3. Stable and unstable homotopy groups 5 4. Spectral sequences and calculations in homology and homotopy 6 5. Steenrod operations, K(π, n)’s, and characteristic classes 8 6. The introduction of cobordism 10 7. The route from cobordism towards K-theory 12 8. Bott periodicity and K-theory 14 9. The Adams spectral sequence and Hopf...

The article analyses the changes in some meteorological conditions of arid steppe for period 1966 – 2020 Gigant settlement. This station has continuous verified values data. In this work data on temperature and precipitation are analysed. yearly cycle was divided into warm (IV IX months) cold (X III periods. Trends have been identified. There is an increase by 1.1°C. amount varies slightly. ass...

An analysis of spatiotemporal variability air temperature and precipitation in the Volga Federal District (European Russia) between 1966 2021 was carried out. Based on data from 20 meteorological stations, relatively evenly located territory under consideration, spatial distribution average monthly annual temperatures assessed; some indicators temporal these variables period consideration were ...