نتایج جستجو برای: ploughs

تعداد نتایج: 38  

2005
Andrew Sherratt

The domestication of sheep, goats and cattle by the first farmers of the Fertile Crescent of western Asia, some ten thousand years ago, had unexpected consequences. Originally intended simply to secure for sedentary cerealcultivators a captive meat supply and a convenient source of materials such as sinew and horn, domesticated livestock came to provide novel services to human populations in li...

Journal: :Journal of occupational health 2005
Mustafa Onder Saim Sarac Seyhan Onder

As mining operations go deeper, working conditions become more severe because of high temperature and moisture. The major heat source in deep mines is geothermal heat from the strata. Apart from the rise in rock temperature occurring as working depths increase, the air in mines is also affected by other heat sources. In modern face workings, for example, outputs of between 1,000 and 2,000 kWh m...

2007
Dorian Q. Fuller

BACKGROUND Archaeobotany, the study of plant remains from sites of ancient human activity, provides data for studying the initial evolution of domesticated plants. An important background to this is defining the domestication syndrome, those traits by which domesticated plants differ from wild relatives. These traits include features that have been selected under the conditions of cultivation. ...

2010
J. D. WALMSLEY

In the majority of modern forest management systems, mature trees are harvested above the root collar, leaving stumps in the ground. Due to widespread concern about climatic change caused by anthropogenic emissions of greenhouse gases, increasing prices of fossil fuels and a desire to improve energy security, there is a growing interest in the exploitation of alternative sources of energy, incl...

Journal: :Sustainability 2023

Land degradation and desertification (LDD) has gained worldwide policy attention due to decline in land quality the resultant economic burden accrued upon a vast population reliant on land-based natural capital. In India, impacts are becoming apparent as 24 out of 29 states have been experiencing LDD since early 2000s. Here, we adopt mixed-method approach combining hierarchical cluster analysis...

Journal: :Eppo Bulletin 2023

EPPO BulletinEarly View DATASHEETS ON PESTS RECOMMENDED FOR REGULATIONFree Access Solanum carolinense L. First published: 08 January 2023 https://doi.org/10.1111/epp.12894AboutSectionsPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text full-text accessPlease review our Terms and Conditions of Use check box below share version article.I ...

2006
R. P. Kachru

Agro processing is defined as set of techno-economic activities, applied to all the produces, originating from agricultural farm, livestock, aquacultural sources and forests for their conservation, handling and value-addition to make them usable as food, feed, fibre, fuel or industrial raw materials. Agro processing sector has experienced expansion during last 5 decades, starting with a handful...

2011
Eric Vanhaute Thijs Lambrecht

This article focuses on local agency in two near-famines in 18th-century and 19th-century Flanders. 1 In a comparative exercise, we aim to map out and understand the reorganisation of private and public social relations in two periods of sudden social distress. Our analysis of the food crises of 1740 and 1845-1847 in Flanders exposes the local mechanisms of coping and protection, both in an inf...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید