Zobrazeno 1 - 9
of 9
pro vyhledávání: '"David R. Speidel"'
Autor:
Kenneth R. Olson, David R. Speidel
Publikováno v:
Open Journal of Soil Science. 13:199-242
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64ff3518722f8eebc5fac9d02e6f489c
https://doi.org/10.4236/ojss.2023.134009
https://doi.org/10.4236/ojss.2023.134009
Autor:
Kenneth R. Olson, David R. Speidel
Publikováno v:
Open Journal of Soil Science. 12:363-426
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::463df901070b54dd302c470216eb3a0b
https://doi.org/10.4236/ojss.2022.128016
https://doi.org/10.4236/ojss.2022.128016
Autor:
David R. Speidel, Kenneth R. Olson
Publikováno v:
Open Journal of Soil Science. 11:285-330
The Lower Mississippi River flows from the confluence of the Ohio River and Mississippi River at Cairo, Illinois into the Gulf of Mexico. Mississippi River and Ohio River pathway shifts have shaped and re-shaped the landscapes through which they flow
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2d593aee3b9e2dd336271c14d0f7fa9
https://doi.org/10.4236/ojss.2021.116016
https://doi.org/10.4236/ojss.2021.116016
Autor:
Kenneth R. Olson, David R. Speidel
Publikováno v:
Open Journal of Soil Science. 10:194-215
For more than 2500 years, soil tunnels have been used in warfare and smuggling. Initially tunnels were utilized to attack fortresses that were underlain by unconsolidated (non-bedrock) soil materials. Later tunnels provided housing and served as smug
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc53f0b9cc810fd7b5b3dd79006529ac
https://doi.org/10.4236/ojss.2020.105010
https://doi.org/10.4236/ojss.2020.105010
Autor:
David R. Speidel, Kenneth R. Olson
Publikováno v:
Open Journal of Soil Science. 10:16-43
One only needs to study the soil and geologic history and location of the ancient Mississippi and Ohio Rivers to understand why Len Small levee if patched will continue to fail. Much of Dogtooth Bend located in Alexander County, Illinois was original
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ffc5999ca8e4517f074a3f894202249
https://doi.org/10.4236/ojss.2020.101002
https://doi.org/10.4236/ojss.2020.101002
Autor:
Andrew P. Manale, Clare Lindahl, David R. Speidel, Naveen Adusumilli, Catherine DeLong, Rex Martin, Andrew N. Sharpley, Clark J. Gantzer, John W. Peterson
Publikováno v:
Journal of Soil and Water Conservation. 73:96A-99A
W e, the Soil and Water Conservation Society (“Society”), maintain that natural resources are a nation's heritage. Soil, water, wildlife, and other ecosystem resources must be protected for future generations. Over decades of research and deliber
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6fc8843cb593ce81a43525656ec9fe1f
https://doi.org/10.2489/jswc.73.4.96a
https://doi.org/10.2489/jswc.73.4.96a
Publikováno v:
Journal of Soil and Water Conservation. 71:37A-43A
M ore than a century ago, American swamps and river lowlands were considered wasteland of no value and a hindrance to land development. The Swamp Land Acts of 1849, 1850, and 1860 granted states the right to reclaim 26 million ha (64.9 million ac) of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2aa573dfe35ba6a4a7e86c86f7a794f
https://doi.org/10.2489/jswc.71.2.37a
https://doi.org/10.2489/jswc.71.2.37a
Publikováno v:
Journal of Soil and Water Conservation. 71:13A-19A
T he Headwaters Diversion, a system of impounding basins, channels, and levees, carries the waters of the eastern Missouri Ozark Plateau hill streams eastward to the Mississippi River south of Cape Girardeau (figure 1). The system consists of three l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::302f5c1f73173ac23b8b56b36902e53a
https://doi.org/10.2489/jswc.71.1.13a
https://doi.org/10.2489/jswc.71.1.13a
Autor:
David R. Speidel
Publikováno v:
Journal of Soil and Water Conservation. 63:100A-101A
T he mission of USDA provincial reconstruction team (PRT) agriculture advisors is to help the Iraqi provincial governments build their capacity to govern and provide essential agricultural services to their people. I am serving as an agriculture advi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7cda92a07e42e2a4111cf79522774c1
https://doi.org/10.2489/jswc.63.4.100a
https://doi.org/10.2489/jswc.63.4.100a