scholarly journals Population Characteristics of Shovelnose Sturgeon During Low‐ and High‐Water Conditions in the Lower Platte River, Nebraska

2018 ◽  
Vol 38 (2) ◽  
pp. 308-315
Author(s):  
Jeremy J. Hammen ◽  
Martin J. Hamel ◽  
Matthew L. Rugg ◽  
Edward J. Peters ◽  
Mark A. Pegg
Keyword(s):  
High Water ◽  
Population Characteristics ◽  
Platte River ◽  
Shovelnose Sturgeon ◽  
Water Conditions

Performance of Light Coastal Structures Under Normal and High Water Conditions

1975 ◽  
Vol 2 (4) ◽  
pp. 381-391 ◽  
Author(s):  
J. W. Kamphuis
Keyword(s):  
Lake Erie ◽  
High Water ◽  
Water Levels ◽  
Coastal Protection ◽  
Coastal Structures ◽  
Water Conditions ◽  
Protection Structures

A number of lightweight coastal protection structures, built on the Lake Erie shore are discussed in this paper. There were two constraints on the design; limited funds and a very precarious downdrift beach. Thus the structures were inexpensive and the protection was low-key to prevent damage downdrift. In 1972–1974 these structures were subjected to a combination of large waves and high water levels and thus they were tested well beyond their design limits.The paper discusses the structures, their performance under normal conditions, and their performance during and after the abnormally high water levels. It is found that inexpensive, low-key structures are sufficiently strong to survive normal conditions, but fail by overtopping and flanking under conditions beyond their low design limits.

Soil behavior and related effects in the Peru earthquake of May 31, 1970

1971 ◽  
Vol 61 (3) ◽  
pp. 579-590 ◽  
Author(s):  
William Enkeboll
Keyword(s):  
Water Table ◽  
High Water ◽  
Soil Behavior ◽  
High Water Table ◽  
Water Conditions ◽  
Degree Of Damage ◽  
Soil And Water

abstract Soil and water conditions had an effect on the degree of damage to structures. Most structures were located on alluvium with a high water table. Settlements occurred in dike and causeway fill in Chimbote harbor. Severe problems to communication occurred in some areas through embankment failures and road slides.

Stock characteristics of shovelnose sturgeon in the lower Platte River, Nebraska

2007 ◽  
Vol 23 (4) ◽  
pp. 484-488
Author(s):  
D. A. Shuman ◽  
J. E. Parham ◽  
E. J. Peters
Keyword(s):  
Platte River ◽  
Shovelnose Sturgeon

Monitoring High-Water Conditions Using Nighttime Thermal Imagery

2002 ◽  
Vol 39 (3) ◽  
pp. 170-180 ◽  
Author(s):  
Ye. V. Shcherbenko ◽  
S. G. Doroshenko
Keyword(s):  
High Water ◽  
Thermal Imagery ◽  
Water Conditions

Shear Distribution Coefficient Study of New Inland Large-Head Wharf Structure under Horizontal Force

2013 ◽  
Vol 639-640 ◽  
pp. 177-182
Author(s):  
Kai Ming Zou ◽  
Xiao Ping Liu
Keyword(s):  
Distribution Coefficient ◽  
Design Method ◽  
High Water ◽  
Analysis Method ◽  
Nonlinear Structure ◽  
Shear Distribution ◽  
Traditional Design ◽  
Large Head ◽  
Water Conditions ◽  
The Moment

Load distribution machannism between bents of piled wharf is an important issue.In view of the shortage of the traditional design method for piled wharf structure,this paper established the nonlinear structure-soil numerical model by finite element method software ANSYS.Based on the numerical analysis method, shear distribution coefficient of three different structure themes under high water conditions and low water conditions were Analyzed.Through post-processing process,information about the moment,shear stess of piles were obtained.The results showed that the integrity and capacity of resting horizontal load is increased by setting of longitudinal beams,.and the lower the collision position is,the more concentrate the distribution is..The conclusion and research method of this paper can be used as a reference for similar project in future.

scholarly journals Screening of Lettuce Germplasm for Agronomic Traits under Low Water Conditions

HortScience ◽  
2016 ◽  
Vol 51 (6) ◽  
pp. 669-679 ◽  
Author(s):  
Renée L. Eriksen ◽  
Caleb Knepper ◽  
Michael D. Cahn ◽  
Beiquan Mou
Keyword(s):  
Drought Stress ◽  
Agronomic Traits ◽  
High Water ◽  
Severe Drought ◽  
Lactuca Serriola ◽  
Cultivar Selection ◽  
Significant Difference ◽  
Water Conditions ◽  
Leaf Lettuce ◽  
Water Treatments

After a preliminary screening of over 3500 cultivars, we selected 200 butterhead, cos, crisphead, leaf, and stem lettuce (Lactuca sativa L.) and wild prickly lettuce (Lactuca serriola L.) varieties to test under high water (150% evapotranspiration [ET]) and low water (50% ET) conditions in the field, and tracked commercially relevant traits related to growth and marketability, maturity, and physiology. Plants typically reduced growth and appeared to reallocate developmental resources to achieve maturity quickly, as indicated by traits such as increased core length. This strategy may allow them to complete their life cycle before severe drought stress proves lethal. Although most cultivars experienced a reduction in growth under low water conditions relative to high water conditions, some cultivars had a significantly reduced yield penalty under stress conditions. Among the different types of lettuce, the fresh weight (FW) of cos cultivars was most affected by drought stress, and the FW of leaf lettuce was least affected. Cos cultivars tended to bolt early. Crisphead cultivars Cal-West 80, Heatmaster, and Marion produced large heads and did not bolt under low water treatments, and butterhead cultivars Buttercrunch and Bibb also produced relatively large heads with very little bolting and no signs of tipburn. The four green leaf cultivars Slobolt, Grand Rapids, Western Green, and Australian showed no statistically significant difference in FW among high and low water treatments in multiple trials, and may be good choices for growers who wish to minimize losses under reduced irrigation. The identification of potentially drought-tolerant varieties and the information from this study may be helpful for cultivar selection by growers under drought conditions, but this study also serves as a step forward in the genetic improvement of lettuce to drought stress.

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