Skip to main content Accessibility help

We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.

Close cookie message
×
  1. Home
  2. Search

Refine search

Refine search

Access:
Content type:
Publication date:
Apply   From and To filters
Subject: Show more
Journals Show more
Publishers: Show more
Societies Show more
Series: Show more
Collections: Show more

Actions for selected content:

Select all | Deselect all
  • View selected items
  • Export citations
  • Download PDF (zip)
  • Save to Kindle
  • Save to Dropbox
  • Save to Google Drive

Save Search

You can save your searches here and later view and run them again in "My saved searches".

Please provide a title, maximum of 40 characters.
Cancel
×

3 results

  • 5 - Irrigation Water Quality

  • from Part I - Fundamentals
  • Vijay P. Singh, Texas A & M University, Qiong Su, Texas A & M University
  • Book:
    Irrigation Engineering
    Published online:
    05 August 2022
    Print publication:
    07 July 2022, pp 81-93

  • Summary

    The quality of irrigation water has a significant impact on crop yield, degradation of soil, pollution of groundwater, and operation and life of irrigation systems. It also interacts with soil and its chemical and physical constituents. In irrigation engineering, water quality is evaluated by considering physical and chemical characteristics of water, but biological characteristics may also be important if wastewater is used for irrigation. This chapter discusses water quality from an agricultural irrigation viewpoint.

  • 8 - Channel Design

  • from Part II - Principles of Hydraulics
  • Vijay P. Singh, Texas A & M University, Qiong Su, Texas A & M University
  • Book:
    Irrigation Engineering
    Published online:
    05 August 2022
    Print publication:
    07 July 2022, pp 121-144

  • Summary

    Channels are a vital part of irrigation systems. They are the link between the source of water and the irrigation field. Channels used in irrigation systems can be either erodible or non-erodible, or earthen or lined. Flow in channels is governed by the principles of hydraulics. This chapter discusses rudimentary aspects of hydraulics and the design of open channels.

  • 17 - Archaeology and material culture

  • from PART IV - THE HISTORIOGRAPHY OF EARLY ISLAMIC HISTORY
  • Edited by Chase F. Robinson
  • Book:
    The New Cambridge History of Islam
    Published online:
    28 March 2011
    Print publication:
    04 November 2010, pp 664-682

  • Summary

    A recurrent concern in the archaeological study of early Islam is the degree to which the physical record exhibits significant continuity with the centuries prior to 1/622. This chapter first summarises the earliest evidence for a distinctive Muslim identity in the archaeological record. The Dome of the Rock in Jerusalem marks a watershed in Islamic material culture, as among other things, it also provides evidence of a new sense of artistic ambition among the Muslim elite. Next, the chapter assesses changes in the countryside with particular emphasis on the elite country residences (qusur) of Greater Syria and the evolution of complex irrigation systems in different parts of the Islamic world. Then, it discusses the changes in the urban environment from the Late Antique period to the creation of new cities in Syria and Iraq during the early Abbasid caliphate. Finally, the chapter addresses changes in international trade from the Late Antique period to around 390/1000.