Site-to-site variability in abundance of meiobenthic copepods along a tidal gradient over 24 hours

1988 ◽  
pp. 477-483
Author(s):  
Bruce C. Coull ◽  
Robert J. Feller
Keyword(s):  
Tidal Gradient ◽  
Site Variability

Site-to-site variability in abundance of meiobenthic copepods along a tidal gradient over 24 hours

Hydrobiologia ◽  
1988 ◽  
Vol 167-168 (1) ◽  
pp. 477-483 ◽  
Author(s):  
Bruce C. Coull ◽  
Robert J. Feller
Keyword(s):  
Tidal Gradient ◽  
Site Variability

INTER- AND INTRA-SITE VARIABILITY OF COSEISMIC SUBSIDENCE ESTIMATES FROM NORTHERN HUMBOLDT BAY, CALIFORNIA

2017 ◽  
Author(s):  
J. Scott Padgett ◽  
◽  
Simon E. Engelhart ◽  
Harvey Kelsey ◽  
Robert C. Witter
Keyword(s):  
Coseismic Subsidence ◽  
Site Variability

scholarly journals Amino-acid site variability among natural and designed proteins

2013 ◽  
Author(s):  
Eleisha L. Jackson ◽  
Noah Ollikainen ◽  
Arthur W. Covert III ◽  
Tanja Kortemme ◽  
Claus O. Wilke
Keyword(s):  
Amino Acid ◽  
Protein Design ◽  
Protein Sequences ◽  
Structural Constraints ◽  
Scoring Functions ◽  
Solvent Exposure ◽  
Backbone Flexibility ◽  
Hydrophobic Residues ◽  
Designed Proteins ◽  
Site Variability

Computational protein design attempts to create protein sequences that fold stably into pre-specified structures. Here we compare alignments of designed proteins to alignments of natural proteins and assess how closely designed sequences recapitulate patterns of sequence variation found in natural protein sequences. We design proteins using RosettaDesign, and we evaluate both fixed-backbone designs and variable-backbone designs with different amounts of backbone flexibility. We find that proteins designed with a fixed backbone tend to underestimate the amount of site variability observed in natural proteins while proteins designed with an intermediate amount of backbone flexibility result in more realistic site variability. Further, the correlation between solvent exposure and site variability in designed proteins is lower than that in natural proteins. This finding suggests that site variability is too uniform across different solvent exposure states (i.e., buried residues are too variable or exposed residues too conserved). When comparing the amino acid frequencies in the designed proteins with those in natural proteins we find that in the designed proteins hydrophobic residues are underrepresented in the core. From these results we conclude that intermediate backbone flexibility during design results in more accurate protein design and that either scoring functions or backbone sampling methods require further improvement to accurately replicate structural constraints on site variability.

Ceramic Vessels, Site Permanence, and Group Size: A Mississippian Example

1984 ◽  
Vol 49 (4) ◽  
pp. 696-712 ◽  
Author(s):  
Gary Shapiro
Keyword(s):  
Group Size ◽  
Relative Size ◽  
Archaeological Sites ◽  
Vessel Size ◽  
Size And Shape ◽  
Ceramic Vessels ◽  
Georgia Piedmont ◽  
Site Variability

Data derived from analyses of vessel size and shape have been largely overlooked by researchers who seek to understand Mississippian site variability. Vessel form data are analyzed to demonstrate that relative site permanence and the relative size of group that lived at or visited sites are reflected in the size and shape of ceramic vessels. Vessel forms from four archaeological sites are compared, each of which played a different role within a single, late Mississippian society of the Georgia Piedmont.

Among-site variability in environmental and management characteristics: Effect on nutrient loss in agricultural tile drainage

2020 ◽  
Vol 46 (3) ◽  
pp. 486-499
Author(s):  
Brittany R. Hanrahan ◽  
Kevin W. King ◽  
Merrin L. Macrae ◽  
Mark R. Williams ◽  
Jedediah H. Stinner
Keyword(s):  
Tile Drainage ◽  
Nutrient Loss ◽  
Site Variability

Near-Road Air Pollutant Measurements: Accounting for Inter-Site Variability Using Emission Factors

2018 ◽  
Vol 52 (16) ◽  
pp. 9495-9504 ◽  
Author(s):  
Jonathan M. Wang ◽  
Cheol-Heon Jeong ◽  
Nathan Hilker ◽  
Kerolyn K. Shairsingh ◽  
Robert M. Healy ◽  
...  
Keyword(s):  
Emission Factors ◽  
Air Pollutant ◽  
Site Variability
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