scholarly journals STUDY OF TOPOLOBAMPO'S BAY, MEXICO, ENTRANCE

1970 ◽  
Vol 1 (12) ◽  
pp. 73
Author(s):  
Hector Lopez Gutierrez ◽  
Daniel Cervantez Castro
Keyword(s):  
Field Data ◽  
Theoretical Study ◽  
Wind Waves ◽  
Radioactive Tracer ◽  
Tracer Studies ◽  
Experimental Channel

Brief examination of the geomorphological background of the Topolobampo's bay inlet is made A theoretical study of the inlet and spits, based on field data such as wind, waves, tides, currents, bathimetric charts from 1875 to 1965, was developed in order to determinate the most convenient position of an experimental channel dregged on 1963. Radioactive tracer studies, photographic and periodical surveys of the inlet and the channel gave the information for the design of the definitive channel, which at present is behaving in accordance with the predicted way in the theoretical study.

Guidelines for Radioactive Tracer Studies of the Heart and Circulation

Radiology ◽  
1975 ◽  
Vol 116 (1) ◽  
pp. 229-230
Author(s):  
S. James Adelstein
Keyword(s):  
Radioactive Tracer ◽  
Tracer Studies

scholarly journals Wind Wave Growth at Short Fetch

2008 ◽  
Vol 38 (7) ◽  
pp. 1597-1606 ◽  
Author(s):  
T. Lamont-Smith ◽  
T. Waseda
Keyword(s):  
Wind Speed ◽  
Wave Height ◽  
Significant Wave Height ◽  
Field Data ◽  
Wind Wave ◽  
Wind Waves ◽  
Retention Rates ◽  
Horizontal Distance ◽  
Wave Tank ◽  
Significant Wave

Abstract Wave wire data from the large wind wave tank of the Ocean Engineering Laboratory at the University of California, Santa Barbara, are analyzed, and comparisons are made with published data collected in four other wave tanks. The behavior of wind waves at various fetches (7–80 m) is very similar to the behavior observed in the other tanks. When the nondimensional frequency F* or nondimensional significant wave height H* is plotted against nondimensional fetch x*, a large scatter in the data points is found. Multivariate regression to the dimensional parameters shows that significant wave height Hsig is a function of U2x and frequency F is a function of U1.25x, where U is the wind speed and x is the horizontal distance, with the result that in general for wind waves at a particular fetch in a wave tank, approximately speaking, the wave frequency is inversely proportional to the square root of the wind speed and the wavelength is proportional to the wind speed. Similarly, the wave height is proportional to U1.5 and the orbital velocity is proportional to U. Comparison with field data indicates a transition from this fetch law to the conventional one [the Joint North Sea Wave Project (JONSWAP)] for longer fetch. Despite differences in the fetch relationship for the wave tank and the field data, the wave height and wave period satisfy Toba’s 3/2 power law. This law imposes a strong constraint on the evolution of wind wave energy and frequency; consequently, the energy and momentum retention rate are not independent. Both retention rates grow with wind speed and fetch at the short fetches present in the wave tank. The observed retention rates are completely different from those typically observed in the field, but the same constraint (Toba’s 3/2 law) holds true.

Simultaneous Radioactive Tracer Studies of Erythropoiesis and Red-Cell Destruction in Thalassaemia

1961 ◽  
Vol 7 (4) ◽  
pp. 411-429 ◽  
Author(s):  
B. Malamos ◽  
E. H. Belcher ◽  
E. Gyftaki ◽  
D. Binopoulos
Keyword(s):  
Radioactive Tracer ◽  
Red Cell ◽  
Tracer Studies ◽  
Cell Destruction

scholarly journals Coastline evolution based on statistical analysis and modelling

2018 ◽  
Author(s):  
Elvira Armenio ◽  
Francesca De Serio ◽  
Michele Mossa ◽  
Antonio F. Petrillo
Keyword(s):  
Statistical Analysis ◽  
Numerical Modelling ◽  
Field Data ◽  
Wind Waves ◽  
Management Strategies ◽  
Coastal Zone Management ◽  
Sediment Supply ◽  
Aerial Photographs ◽  
Joint Analysis ◽  
Coastal System

Abstract. Wind, waves, tides, sediment supply, changes in relative sea level and human activities strongly affect shorelines, which constantly move in response to these processes, over a variety of time scales. Thus, the implementation of sound coastal zone management strategies needs reliable information on erosion and/or deposition processes. Suggesting a feasible way to provide such information is the main motivation of the present work. A chain approach is here proposed, tested on a vulnerable coastal site located along the southern Italy, and based on the joint analysis of field data, statistical tools and numerical modelling. Firstly, the coastline morphology has been examined through interannual field data, such as aerial photographs, plane-bathymetric surveys, seabed characterization. After this, rates of shoreline changes have been quantified with a specific GIS tool. Correlations among the historical shoreline positions have been detected by statistical analysis and have been satisfactorily confirmed by numerical modelling, in terms of recurrent erosion/accretion area and beach rotation trends. Finally, based on field topographic, sediment, wave and wind data, the response of the beach by the numerical simulation has been investigated in a forecasting perspective. The scope of this study is providing a feasible, general and replicable chain approach, which could help to thoroughly understand the dynamics of a coastal system, identifying typical and recurrent erosion/accretion processes, and predict possible future trends, useful for planning coastal activities.

Wind-induced turbulent heat and mass transfer over large bodies of water

1976 ◽  
Vol 77 (4) ◽  
pp. 645-664 ◽  
Author(s):  
C. Y. Shaw ◽  
Y. Lee
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Satisfactory Agreement ◽  
Water Surface ◽  
Field Data ◽  
Theoretical Study ◽  
Field Conditions ◽  
Turbulent Heat ◽  
Bodies Of Water ◽  
Principle Of Similarity

A semi-theoretical study has been made of the problem of stable turbulent heat and mass transfer between a water surface and surrounding atmosphere under the influence of wind. The equations derived are based on the principle of similarity and are therefore expected to be valid under both laboratory and field conditions. The predicted heat- and mass-transfer Stanton numbers appear to be in satisfactory agreement with the available field data.

The biosynthesis of phenols. Part X. Mutation and radioactive tracer studies relating to the biosynthesis of sulochrin

1966 ◽  
pp. 168 ◽  
Author(s):  
R. F. Curtis ◽  
P. C. Harries ◽  
C. H. Hassall ◽  
J. D. Levi ◽  
D. M. Phillips
Keyword(s):  
Radioactive Tracer ◽  
Tracer Studies
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