The Early Development of Agriculture in Britain

1938 ◽  
Vol 4 (1) ◽  
pp. 27-51
Author(s):  
E. Cecil Curwen

The discovery of agriculture marks the greatest advance in the history of mankind— comparable only to that which has followed the discovery of electricity and the invention of steam and internal combustion engines. It is now well recognised that without agriculture man was a food-gatherer, dependent on nature's supplies in hunting, fishing and gathering wild plants, whereas with agriculture he has become a food -producer, able to augment nature's fitful supply in both animal and vegetable kingdoms.In modern speech the term ‘agriculture’ is often used to cover stock-raising as well as corn-growing; in the present paper, however, it will be used in its literal sense of the tilling of fields, and more particularly the cultivation of corn. This art appears to have been developed before that of stock-raising, and though both the cultivation of corn and the domestication of certain animals are among the elements that led to the first rise of civilization in the Near East, yet there may have existed at first a certain antipathy between the nomad herdsman and the settled farmer. This line of cleavage is well exemplified in the story of Cain and Abel, and the continuation of the story shows very well how it was the settled farmers, represented by Cain's descendants, who built the first cities and developed the working of metal and the arts of music, while the herdsman remained nomadic.

2004 ◽  
Vol 118 (1) ◽  
pp. 3-9
Author(s):  
Andrzej BUXAKOWSKI ◽  
Marian KOPCZYŃSKI

In this paper the authors have presented the history of the quarterly magazine “Internal Combustion Engines” edited in the years 1961–1999, under the auspices of Combustion Engines Section of SIMP. The publisher was H. Cegielski Works in Poznañ. The paper contains information on the start of this publication, its editorial board and changes in the board. It gives also some information on the scope as well as on some special numbers of the magazine.


2019 ◽  
Vol 9 (3) ◽  
pp. 406 ◽  
Author(s):  
Hojat Mahdisoozani ◽  
Mehrdad Mohsenizadeh ◽  
Mehdi Bahiraei ◽  
Alibakhsh Kasaeian ◽  
Armin Daneshvar ◽  
...  

Internal combustion engines (ICEs) are the primary source of power generation in today’s driving vehicles. They convert the chemical energy of the fuel into the mechanical energy which is used to drive the vehicle. In this process of energy conversion, several parameters cause the engine to vibrate, which significantly deteriorate the efficiency and service life of the engine. The present study aims to gather all the recent works conducted to reduce and isolate engine vibration, before transmitting to other vehicle parts such as drive shafts and chassis. For this purpose, a background history of the ICEs, as well as the parameters associated with their vibration, will be introduced. The body of the paper is divided into three main parts: First, a brief summary of the vibration theory in fault detection of ICEs is provided. Then, vibration reduction using various mechanisms and engine modifications is reviewed. Next, the effect of using different biofuels and fuel additives, such as alcohols and hydrogen, is discussed. Finally, the paper ends with a conclusion, summarizing the most recent methods and approaches that studied the vibration and noise in the ICEs.


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