Borehole Seismic Monitoring of Injected CO2 at the Frio Site (open access)

Borehole Seismic Monitoring of Injected CO2 at the Frio Site

As part of a small scale sequestration test (about 1500 tonsof CO2) in a saline aquifer, time-lapse borehole seismic surveys wereconducted to aid in characterization of subsurface CO2 distribution andmaterial property changes induced by the injected CO2. A VSP surveydemonstrated a large increase (about 75 percent) in seismic reflectivitydue to CO2 injection and allowed estimation of the spatial extent of CO2induced changes. A crosswell survey imaged a large seismic velocitydecrease (up to 500 m/s) within the injection interval and provided ahigh resolution image of this velocity change which maps the subsurfacedistribution of CO2 between two wells. Numerical modeling of the seismicresponse uses the crosswell measurements to show that this small CO2volume causes a large response in the seismic reflectivity. This resultdemonstrates that seismic detection of small CO2 volumes in salineaquifers is feasible and realistic.
Date: April 21, 2006
Creator: Daley, Thomas M.; Myer, Larry R.; Hoversten, G.M.; Peterson, JohnE. & Korneev, Valeri A.
Object Type: Article
System: The UNT Digital Library
Buggy-Spindle (open access)

Buggy-Spindle

Patent for a buggy spindle for "taking up lost motion in the axle box should it be too short or too worn" (lines 10-11). Illustrations included.
Date: April 21, 1908
Creator: Messer, Jeremiah Clark
Object Type: Patent
System: The Portal to Texas History
Marble Malls Independent School District: Management and Performance Review (open access)

Marble Malls Independent School District: Management and Performance Review

This report "reviews the management and performance of the Marble Falls Independent School District's (MFISD's) educational,financial, and operations. functions" (Legislative Budget Board Letter).
Date: April 21, 2004
Creator: Texas. Legislative Budget Board.
Object Type: Report
System: The Portal to Texas History
Cotton and Corn Planter. (open access)

Cotton and Corn Planter.

Patent for a new and improved planter. This design consists "[i]n combination with the hopper having its front wall inclined and formed with a guide-groove, the inner wall of which is cut out, the belt having its side edges working in the groove, and having hooks attached to the same between the side edges, said hooks projecting through the cut-out portion of the groove, so as to have free communication with the seed in the hopper" (lines 88-96).
Date: April 21, 1885
Creator: Easley, Levi
Object Type: Patent
System: The Portal to Texas History
Bed Bottom. (open access)

Bed Bottom.

Patent for a new and improved bed bottom. This design "consists in a spring-bed formed of two U-shaped spring-rods or frames formed by the rods, which frames have their end pieces crossed and secured at their free ends in the opposite ends of slates. To the longitudinal pieces of the spring-frames the side edges of a piece of canvas are secured, and spiral springs are secured on the slats below the canvas" (lines 11-19).
Date: April 21, 1885
Creator: Bentley, Travis C.
Object Type: Patent
System: The Portal to Texas History
Baling Press. (open access)

Baling Press.

Patent for improvements to press for making bales of hay.
Date: April 21, 1885
Creator: Chidester, John E.
Object Type: Patent
System: The Portal to Texas History
Cotton Picker's Sack. (open access)

Cotton Picker's Sack.

Patent for a new and improved sack for cotton pickers. This design "is to improve that class of sacks which are used by cotton-pickers and form a receptacle for cotton after it has been culled from the bolls, and in which it is carried to the gin. These sacks as now made are packed with cotton so as to be unwieldy, difficult to manipulate, and unhandy to empty, thus necessitating a great deal of labor and much waste of time" (lines 7-15).
Date: April 21, 1885
Creator: Dye, Charles Headen
Object Type: Patent
System: The Portal to Texas History
Churning Device. (open access)

Churning Device.

Patent for a new and improved churn. This design consists "[i]n a churning device, the combination, with a base and a spring-bar held therein, of a cross-bar hinged to the said base and a churn-carrying bar secured to the said hinged and spring-bars" (lines 69-73).
Date: April 21, 1885
Creator: Wood, Sylvanus B.; Wood, Hervey & Wiley, Thomas Wilson
Object Type: Patent
System: The Portal to Texas History
Compensating Pump-Spring. (open access)

Compensating Pump-Spring.

Patent for improvements in compensating pump-springs by “storing up in the downward or idle stroke of the suction-rod, a power which is expended during the upward stroke to assist the crank in lifting the rod; and at the same time reducing the power required to drive the pump, equalizing the resistance, increasing the efficiency and generally prolonging the life of the entire mechanism.” (Lines 36-40) Illustration is included.
Date: April 21, 1891
Creator: Black, William L.
Object Type: Patent
System: The Portal to Texas History
Churn-Power. (open access)

Churn-Power.

Patent for improvements in churns is to “simplify and improve the construction of the means for operating vertically-reciprocating churn-dashers and to enable the dasher to be adjusted vertically, according to the amount of lacteal fluid to be churned.” (Lines 11-15) Illustration is included.
Date: April 21, 1891
Creator: Dickey, John S.
Object Type: Patent
System: The Portal to Texas History
Baling-Press. (open access)

Baling-Press.

Patent for improvements in baling-presses by using a four-sided baling box/chamber with supporting-upright doors arranged at the top, at the front and one of the sides of the box. These doors can be hinged at diagonally-opposite corners of the box; locking-bolts are pivoted at the free end of the each door, the top door with locking-bar sliding through apertures in the uprights and the lever for operating the top door. Illustration is included.
Date: April 21, 1891
Creator: Klockmann, Henry G.
Object Type: Patent
System: The Portal to Texas History
Texas Register, Volume 17, Number 29, Pages 2821-2897, April 21, 1992 (open access)

Texas Register, Volume 17, Number 29, Pages 2821-2897, April 21, 1992

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: April 21, 1992
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Texas Register, Volume 20, Number 30, Pages 2971-3065, April 21, 1995 (open access)

Texas Register, Volume 20, Number 30, Pages 2971-3065, April 21, 1995

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: April 21, 1995
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Texas Register, Volume 6, Number 30, Pages 1483-1504, April 21, 1981 (open access)

Texas Register, Volume 6, Number 30, Pages 1483-1504, April 21, 1981

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: April 21, 1981
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Texas Register, Volume 12, Number 30, Pages 1309-1367, April 21, 1987 (open access)

Texas Register, Volume 12, Number 30, Pages 1309-1367, April 21, 1987

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: April 21, 1987
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Texas Attorney General Opinion: GA-0182 (open access)

Texas Attorney General Opinion: GA-0182

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Greg Abbott, regarding a legal question submitted for clarification: Whether the Texas Parks and Wildlife Department may convey real property or an interest in real property the State received under a court-approved final judgement “solely for the use and benefit of the … Department, acting in the public Trust … only for the public park purposes, for promoting public beach access, and for off-beach parking” (RQ-0131-GA)
Date: April 21, 2004
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: MS-24 (open access)

Texas Attorney General Opinion: MS-24

Letter opinion issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, John Ben Shepperd, regarding a legal question submitted for clarification; Authority of the District Attorney to determine when it is necessary and desirable to appoint a grand jury bailiff and the duty of the commissioners' court to authorize payment for services rendered by a bailiff so appointed.
Date: April 21, 1953
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: GA-0181 (open access)

Texas Attorney General Opinion: GA-0181

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Greg Abbott, regarding a legal question submitted for clarification: Whether a licensed crab fisherman must obtain permission from the owner submerged land in order to place crab traps at that location (RQ-0130-GA)
Date: April 21, 2004
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: LO93-031 (open access)

Texas Attorney General Opinion: LO93-031

Letter opinion issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Dan Morales, regarding a legal question submitted for clarification: Whether a legislator who serves as an independent contractor for an independent school district holds a “position of profit under this State” (RQ-513)
Date: April 21, 1993
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: MS-202 (open access)

Texas Attorney General Opinion: MS-202

Letter opinion issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, John Ben Shepperd, regarding a legal question submitted for clarification; Construction of Senate Bill 74, 54th Legislature, amending Article 1404b, V.P.C.
Date: April 21, 1955
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: LO89-37 (open access)

Texas Attorney General Opinion: LO89-37

Letter opinion issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification.
Date: April 21, 1989
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: JM-480 (open access)

Texas Attorney General Opinion: JM-480

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification: Whether a veteran's county service officer may simultaneously serve as a city councilman.
Date: April 21, 1986
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: JM-682 (open access)

Texas Attorney General Opinion: JM-682

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification; Exemption for biomedical research facilities under section 11.23(h) of the Property Tax Code
Date: April 21, 1987
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: WW-826 (open access)

Texas Attorney General Opinion: WW-826

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Will Wilson, regarding a legal question submitted for clarification: The joint responsibility of the Secretary of State and the Comptroller of Public Accounts on the administrative procedure of forfeiting a corporation's right to do business.
Date: April 21, 1960
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History