GEOPHYSICAL CASE HISTORY OF THE ALTURITAS CONCESSION, STATE OF ZULIA, WESTERN VENEZUELA

Geophysics ◽  
1961 ◽  
Vol 26 (6) ◽  
pp. 691-705
Author(s):  
Harry R. Stenson
Keyword(s):  
United States ◽  
Case History ◽  
Geophysical Methods ◽  
The United States ◽  
Torsion Balance ◽  
Oil Wells ◽  
Chronological Order ◽  
Geophysical Surveys ◽  
History Of ◽  
Error Correlation

The geophysical case history of Alturitas area, western Venezuela is presented. It is unusual in that all the commonly used geophysical methods were employed. The Alturitas anomaly was discovered by the torsion balance in 1929. Subsequent surveys included the gravity meter, magnetometer, refraction and reflection seismograph. The surveys are discussed in chronological order giving the reasons for the particular surveys and results obtained. Although the geophysical results were generally good, an error correlation led to a misinterpretation of stratigraphic relations. This in turn resulted in drilling depths much deeper than anticipated. Five wells were drilled on the concession resulting in three oil wells and two dry holes. Alturitas‐1 and Alturitas‐2 are two of the deepest oil wells outside the United States. Maps are presented for the key geophysical surveys.

A BRIEF HISTORY OF THE GRAVITY METHOD OF PROSPECTING FOR OIL

Geophysics ◽  
1940 ◽  
Vol 5 (3) ◽  
pp. 231-242 ◽  
Author(s):  
E. A. Eckhardt
Keyword(s):  
United States ◽  
The United States ◽  
Torsion Balance ◽  
Gravity Method ◽  
Gravimetric Survey ◽  
Historical Outline ◽  
History Of

An historical outline of the development of the gravity method of prospecting is presented. While the very early gravity work with pendulum equipment was for geodetic purposes alone, the increased instrumental sensitivity made available with the development of the torsion balance by Eoetvoes (1888), led in 1915, to the first gravimetric survey for oil prospecting in the Egbell field, Czechoslovakia. The application of the method to prospecting in the United States started in 1924 with the discovery of the Nash dome in Coastal Texas by a torsion balance survey. The development and use of improved pendulum equipment is discussed and finally the recent marked increase in gravity work resulting from the introduction of the gravimeter about 1930 to 1935.

The Transformational Change Challenge of Memes: The Case of Marriage Equality in the United States

2018 ◽  
Vol 59 (8) ◽  
pp. 1667-1697
Author(s):  
Sandra Waddock ◽  
Steve Waddell ◽  
Paul S. Gray
Keyword(s):  
United States ◽  
Case History ◽  
Empirical Work ◽  
Systems Change ◽  
Transformational Change ◽  
The United States ◽  
Marriage Equality ◽  
The Social ◽  
History Of ◽  
Large Systems

This article explores the role of changing memes in large systems change toward marriage equality—popularly referred to as same-sex marriage—in the United States. Using an abbreviated case history of the transformation, the article particularly explores the shifting memes or core units of culture, in this case, word phrases associated with marriage equality over time, influencing the social change process. Using both the case history and the empirical work on memes, the article identifies nine lessons to support others tackling large systems change challenges.

Review of A brief history of the United States.

1919 ◽  
Vol 10 (8) ◽  
pp. 414-414
Author(s):  
No authorship indicated
Keyword(s):  
United States ◽  
The United States ◽  
History Of

An American Language

2018 ◽  
Author(s):  
Rosina Lozano
Keyword(s):  
United States ◽  
National Policy ◽  
The United States ◽  
Spanish Language ◽  
Spanish Speakers ◽  
Language Recognition ◽  
Political Language ◽  
Political Issue ◽  
History Of ◽  
The U.S

An American Language is a political history of the Spanish language in the United States. The nation has always been multilingual and the Spanish language in particular has remained as an important political issue into the present. After the U.S.-Mexican War, the Spanish language became a language of politics as Spanish speakers in the U.S. Southwest used it to build territorial and state governments. In the twentieth century, Spanish became a political language where speakers and those opposed to its use clashed over what Spanish's presence in the United States meant. This book recovers this story by using evidence that includes Spanish language newspapers, letters, state and territorial session laws, and federal archives to profile the struggle and resilience of Spanish speakers who advocated for their language rights as U.S. citizens. Comparing Spanish as a language of politics and as a political language across the Southwest and noncontiguous territories provides an opportunity to measure shifts in allegiance to the nation and exposes differing forms of nationalism. Language concessions and continued use of Spanish is a measure of power. Official language recognition by federal or state officials validates Spanish speakers' claims to US citizenship. The long history of policies relating to language in the United States provides a way to measure how U.S. visions of itself have shifted due to continuous migration from Latin America. Spanish-speaking U.S. citizens are crucial arbiters of Spanish language politics and their successes have broader implications on national policy and our understanding of Americans.

Clinical Characteristics of Patients Diagnosed with Strongyloidiasis in a United States Urban Outpatient Dermatology Department: A Case Series

2017 ◽  
Vol 1 (3) ◽  
pp. 156-160
Author(s):  
Jacqueline Watchmaker ◽  
Sean Legler ◽  
Dianne De Leon ◽  
Vanessa Pascoe ◽  
Robert Stavert
Keyword(s):  
United States ◽  
Case Series ◽  
The United States ◽  
Screening Tools ◽  
Dermatology Department ◽  
Cutaneous Manifestations ◽  
Serologic Testing ◽  
Patient Reported ◽  
History Of ◽  
Endemic Areas

Background: Although considered a tropical disease, strongyloidiasis may be encountered in non-endemic regions, primarily amongst immigrants and travelers from endemic areas.  Chronic strongyloides infection may be under-detected owing to its non-specific cutaneous presentation and the low sensitivity of commonly used screening tools. Methods: 18 consecutive patients with serologic evidence of strongyloides infestation who presented to a single urban, academic dermatology clinic between September 2013 and October 2016 were retrospectively included.  Patient age, sex, country of origin, strongyloides serology titer, absolute eosinophil count, presenting cutaneous manifestations, and patient reported subjective outcome of pruritus after treatment were obtained via chart review.  Results: Of the 18 patients, all had non-specific pruritic dermatoses, 36% had documented eosinophila and none were originally from the United States. A majority reported subjective improvement in their symptoms after treatment. Conclusion:  Strongyloides infection and serologic testing should be considered in patients living in non-endemic regions presenting with pruritic dermatoses and with a history of exposure to an endemic area.Key Points:Chronic strongyloidiasis can be encountered in non-endemic areas and clinical manifestations are variableEosinophilia was not a reliable indicator of chronic infection in this case series Dermatologists should consider serologic testing for strongyloidiasis in patients with a history of exposure and unexplained pruritus

Sign in / Sign up

Export Citation Format

Share Document