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African American citizen soldiers in Galveston and San Antonio, Texas, 1880-1906Blair, John Patrick 15 May 2009 (has links)
The Texas Volunteer Guard, created by the Militia Law of 1879, continued to
allow African Americans to serve as citizen soldiers. From 1880 to 1906 over six
hundred black men faithfully served in the various state militia companies of Galveston
and San Antonio; yet, their service has rarely obtained scholarly attention. Often
discounted by historians as mere social clubs or deemed too few and insignificant to
warrant study, these men sought not only to demonstrate their citizenship, but to improve
their social status during a period of racial segregation.
The differences and similarities of these groups of African American men at the
grassroots level are illuminated by using the comparative method to examine socioeconomic
characteristics. Furthermore, this examination demonstrates how racial
attitudes remained flexible enough during this period to allow these men to participate in
military-type activities.
An examination of these activities, both as citizens and as soldiers, makes
evident what inspired this state military service. Framed within the network of local
fraternal, social, religious, educational, and political organizations, coupled with a study of previous military service, the militia companies expose the aim of these African
American men to improve their social status as citizens through militia participation.
The Adjutant General of Texas issued firearms, ammunition, and equipment to the
respective companies of African American militiamen from these cities, and coordinated
training exercises, which involved the travel of armed black men over the state’s existing
railroads.
Despite their segregated status, the very presence of armed, uniformed black men
officially sanctioned by the Democratic-controlled government of Texas suggests that
race relationships still remained flexible enough during this time for African Americans
to display their citizenship and manhood through state military service. Conversely,
their dissolution in 1906 reveals the termination of that flexibility and solidified their
status as second-class citizens. Even though they were unsuccessful in continuing their
military organization, the heroic efforts of these men deserves inclusion in the written
history of the long struggle for African American civil rights in this country.
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Frictional Strength of the Creeping Segment of the San Andreas FaultCoble, Clayton Gage 2010 December 1900 (has links)
The San Andreas Fault (SAF) near Parkfield, CA moves by a combination of
aseismic creep and micro-earthquake slip. Measurements of in situ stress orientation,
stress magnitude, and heat flow are incompatible with an average shear stress on the
SAF greater than approximately 20 MPa. To investigate the micro-mechanical processes
responsible for the low strength and creeping behavior, gouge samples from the 3 km-deep
scientific borehole near Parkfield (the San Andreas Fault Observatory at Depth,
SAFOD) are sheared in a triaxial rock deformation apparatus at conditions simulating
those in situ, specifically a temperature of 100°C, effective normal stress of 100 MPa,
pore fluid pressure of 25 MPa, and a Na-Ca-K pore fluid chemistry. The 2 mm-thick
gouge layers are sheared to 4.25 mm at shear rates of 6.0, 0.6, 0.06, and 0.006 mu m/s. The
mechanical data are corrected for apparatus effects and the strength of the jacketing
material that isolates the sample from the confining fluid. Experiments indicate that
gouge is extremely weak with a coefficient of friction of 0.14, and displays velocity and
temperature strengthening behavior. The frictional behavior is consistent with the
inferred in situ stress and aseismic creep observed at SAFOD. The low frictional strength likely reflects the presence of a natural fabric characterized by microscale folia
containing smectite and serpentinite.
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The influence of local and imported factors on the design and construction of the Spanish missions in San Antonio, TexasCrowley, Nancy E. 12 April 2006 (has links)
San Antonio, Texas, is home to several eighteenth-century Spanish Franciscan missions,
which represent some of the best examples of Spanish colonial mission architecture in
the United States and which together comprise the city's historic Chain of Missions.
This study traces the history of four of these missions: Mission Nuestra Senora de la Purismima Concepcion de Acuna, Mission San Jose y San Miguel de Aguayo, Mission
San Juan Capistrano, and Mission San Francisco de la Espada.
Founded by Franciscan friars, who traveled from Spain to Mexico and ultimately
to Texas to christianize native populations of the Americas, and built by craftsmen
transplanted from Mexico, the missions are an amalgam of diverse cultures and decades
of evolving architectural styles. This study examines the cultural, religious, and
environmental factors that influenced the design and construction of the original mission
structures. Specifically, it analyzes the vernacular architecture of eighteenth-century
Spain and Mexico, as well as the traditions of local Native American groups of the period, and studies the effect of these cultures and San Antonio's environmental
conditions on the resulting vernacular construction of the San Antonio missions.
Each of the four missions in this study is examined within the context of three
main factors: (a) the unique combination of broad cultural factorsboth local and
imported-that influenced the architectural forms of the missions; (b) the religious
prescriptions of three cultural groups and their effect on the structure of the missions;
and (c) the impact of the specific environmental conditions of the San Antonio area. The
goal of this study was to identify the multiple forces that contributed to the creation of a
vernacular architectural form-Spanish mission architecture-in Texas. The findings
suggest that the design and construction of the San Antonio Missions were most strongly
influenced by Mexican religious factors, followed by Spanish cultural factors.
Environmental conditions of the area were not highly influential.
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The economic feasibility of enhanced coalbed methane recovery using CO2 sequestration in the San Juan BasinAgrawal, Angeni 17 September 2007 (has links)
Carbon dioxide emissions are considered a major source of increased atmospheric CO2
levels leading towards global warming. CO2 sequestration in coal bed reservoirs is one
technique that can reduce the concentration of CO2 in the air. In addition, due to the
chemical and physical properties of carbon dioxide, CO2 sequestration is a potential
option for substantially enhancing coal bed methane recovery (ECBM).
The San Juan Fruitland coal has the most prolific coal seams in the United States. This
basin was studied to investigate the potential of CO2 sequestration and ECBM. Primary
recovery of methane is controversial ranging between 20-60% based on reservoir
properties in coal bed reservoirs15. Using CO2 sequestration as a secondary recovery
technique can enhance coal bed methane recovery up to 30%.
Within the San Juan Basin, permeability ranges from 1 md to 100 md. The Fairway
region is characterized with higher ranges of permeability and lower pressures. On the
western outskirts of the basin, there is a transition zone characterized with lower ranges
of permeability and higher pressures. Since the permeability is lower in the transition zone, it is uncertain whether this area is suitable for CO2 sequestration and if it can
deliver enhanced coal bed methane recovery.
The purpose of this research is to determine the economic feasibility of sequestering CO2
to enhance coal bed methane production in the transition zone of the San Juan Basin
Fruitland coal seams. The goal of this research is two- fold. First, to determine whether
there is a potential to enhance coal bed methane recovery by using CO2 injection in the
transition zone of the San Juan Basin. The second goal is to identify the optimal design
strategy and utilize a sensitivity analysis to determine whether CO2 sequestration/ECBM
is economically feasible.
Based on the results of my research, I found an optimal design strategy for four 160-
acre spacing wells. With a high rate injection of CO2 for 10 years, the percentage of
recovery can increase by 30% for methane production and it stores 10.5 BCF of CO2. The
economic value of this project is $17.56 M and $19.07 M if carbon credits were granted
at a price of $5.00/ton. If CO2 was not injected, the project would only give $15.55 M.
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Experimental and analytical studies of hydrocarbon yields under dry-, steam-, and steam-with-propane distillationJaiswal, Namit 17 September 2007 (has links)
Simulation study has shown oil production is accelerated when propane is used as
an additive during steam injection. To better understand this phenomenon, distillation
experiments were performed using San Ardo crude oil (12oAPI). For comparison
purposes, three distillation processes were investigated: dry-, steam-, and steam-propanedistillation,
the latter at the propane-to-steam mass ratio of 0.05 at steam injection rate 0.5
g/min.
Two sets of the distillation experiments were carried out. In the first set of
experiments, the distillation temperatures ranged from 115ºC to 300ºC. Distillation
pressures ranged from 0 psig to 998 psig for steam- and steam-propane distillation. The
temperature-pressure combination used represented 15ºC superheated steam conditions.
In the second set of experiments, the distillation temperatures ranged from 220oC to
300oC at 260 psig. The temperature pressure combination used represented field
conditions for crude oil. For both conditions, the cell was kept at each temperature
plateau (cut) until no increase occurs in distillation yields. Distillation yields were
collected at each cut, and the volume and weight of water and hydrocarbon measured.
Based on these experiments, a thermodynamic modeling framework was developed that
describes distillation effect and oil production for steam distillation experiments. The
model is based on composition of crude oil, molecular weight of heavy fraction. The
analytical model results are compared against the experimental data for synthetic crude
and crude oil to verify the validity of the model.
Main results of the study may be summarized as follows. The yields for steam
distillation for saturated conditions of Tsat+15
o
C and Psat is 10 % and with addition of 5% of propane to steam no significant increase occurs in distillation yields. The yields for steam
distillation for field conditions of 260 psig and temperature range (220 ~300oC) is 18 %
and with addition of 5% of propane to steam no significant increase in distillation yields.
The results indicate that propane has minimal distillation effect on the heavy oil. This
occurs possibly because of lesser amount of light fractions in the heavy oil that enhance
the separation of components in the oil caused by the concentration gradient.
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Fibre Channel im Einsatz in Storage Area Networks (SAN)Glöckner, Alexander 06 June 2001 (has links)
Gemeinsamer Workshop von Universitaetsrechenzentrum und Professur "Rechnernetze und verteilte Systeme" der Fakultaet fuer Informatik der TU Chemnitz.
Workshop-Thema: Mobilitaet
Dieser Vortrag beschreibt neue Techniken zum Speichern grosser Datenmenge, auch über grosse Entfernungen hinweg.
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Massenspeicher-Netze auf IP-BasisLeuschner, Jens 29 September 2003 (has links) (PDF)
Diese Diplomarbeit betrachtet, inwiefern sich mit Hilfe freier Software große Speicherkapazitäten über ein Netzwerk verfügbar machen lassen. Dabei wird neben der Untersuchung existierender Lösungen und Ansätze eine Eigenentwicklung auf Basis des in Linux enthaltenen Network-Block-Device vorgestellt.
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A silent and significant subgroup : closing the achievement gap for students in foster care /Lustig, Michelle Lisa. January 2008 (has links)
Thesis (Ed.D.)-California State University San Marcos, University of California, San Diego, San Diego State University, 2008. / Abstract: leaves xvi-xvii. Committee members: John J. Halcón (chair), Jennifer Jefferies, Grace McField, Alan J. Daly. Bibliography: leaves 101-110. Also issued online
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Enchanted feminism : ritual, gender and divinity among the Reclaiming witches of San Francisco /Salomonsen, Jone, January 2002 (has links)
Texte remanié de: Ph. D. / Bibliogr. p. 303-312. Index.
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La fundación del Colegio de San Sebastián : primera institución de los Jesuítas en Málaga /Soto Artuñedo, Wenceslao, January 1900 (has links)
Texte extrait et remanié de: Tesis--Filosofia y letras--Málaga--Universidad, 1999. Titre de soutenance : La Compañía de Jesús y la Málaga moderna : el Colegio de San Sebastián (1572-1767). / En appendice, choix de documents.
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