U N T Established 1890 U N T
University Libraries

Digital Collections

Access

Resource Type

Partner

Collection

Serial/Series Title

Degree Department

Degree Discipline

Degree Level

Country

States

Counties

Decade

Year

Month

Day

Language

7,865 Matching Results

Start Over Month April Day 23rd

Results open in a new window/tab.

Results: 1 - 24 of 7,865 next
Best Match Title Creator Date Created (Newest) Date Created (Oldest) Date Added (Newest) Date Added (Oldest)
1", 1.5", 2" cylinder relief valves

1", 1.5", 2" cylinder relief valves

Blueprint depicting technical details of Battleship Texas.
Date: April 23, 1914
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History
E-1 (4-23-17)

E-1 (4-23-17)

Photograph of Lexington FD No. 1. 1965 Ford/Boardman fire truck. Truck details are on the front bottom right of the photo.
Date: April 23, 2017
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History
2.5" & 3.5" heavy pressure relief valve

2.5" & 3.5" heavy pressure relief valve

Blueprint depicting technical details of Battleship Texas.
Date: April 23, 1914
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History
3" relief valve for main condenser & cylinder drains

3" relief valve for main condenser & cylinder drains

Blueprint depicting technical details of Battleship Texas.
Date: April 23, 1914
Creator: unknown
Object Type: Technical Drawing
System: The Portal to Texas History
8-oxoguainine enhances bending of DNA that favors binding of glycosylases (open access)

8-oxoguainine enhances bending of DNA that favors binding of glycosylases

Molecular dynamics (MD) simulations were carried out on the DNA oligonucleotide GGGAACAACTAG:CTAGTTGTTCCC in its native form and with guanine in the central G19:C6 base pair replaced by 8-oxoguanine (8oxoG). A box of explicit water molecules was used for solvation and Na+ counterions were added to neutralize the system. The direction and magnitude of global bending were assessed by a technique used previously to analyze simulations of DNA containing a thymine dimer. The presence of 8oxoG did not greatly affect the magnitude of DNA bending; however, bending into the major groove was significantly more probable when 8oxoG replaced G19. Crystal structures of glycosylases bound to damaged-DNA substrates consistently show a sharp bend into the major groove at the damage site. We conclude that changes in bending dynamics that assist the formation of this kink are a part of the mechanism by which glycosylases of the base excision repair pathway recognize the presence of 8oxoG in DNA.
Date: April 23, 2003
Creator: Miller, John H.
Object Type: Article
System: The UNT Digital Library
E-23 (4-23-18)

E-23 (4-23-18)

None
Date: April 23, 2018
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History
89'er Run Re-Enactment

89'er Run Re-Enactment

Photograph of 89'er Run re-enactment participants filing claims at the U.S. Land Office, at Southwest 29th and South May, Oklahoma City, OK.
Date: April 23, 1938
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History
(129)Xe NMR of Mesoporous Silicas (open access)

(129)Xe NMR of Mesoporous Silicas

The porosities of three mesoporous silica materials were characterized with {sup 129}Xe NMR spectroscopy. The materials were synthesized by a sol-gel process with r = 0, 25, and 70% methanol by weight in an aqueous cetyltrimethylammonium bromide solution. Temperature dependent chemical shifts and spin lattice relaxation times reveal that xenon does not penetrate the pores of the largely disordered (r= 70%) silica. For both r = 0 and 25%, temperature dependent resonances corresponding to physisorbed xenon were observed. An additional resonance for the r = 25% sample was attributed to xenon between the disordered cylindrical pores. 2D NMR exchange experiments corroborate the spin lattice relaxation data which show that xenon is in rapid exchange between the adsorbed and the gas phase.
Date: April 23, 1999
Creator: Anderson, M.T.; Asink, R.A.; Kneller, J.M. & Pietrass, T.
Object Type: Article
System: The UNT Digital Library
200 kW neutral beam injection into the 2XII mirror device (open access)

200 kW neutral beam injection into the 2XII mirror device

None
Date: April 23, 1973
Creator: Coensgen, F. H.; Cummins, W. F.; Nexsen, W. E., Jr.; Molvik, A. W. & Simonen, T. C.
Object Type: Article
System: The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 28, No. 26, Ed. 1 Friday, April 23, 1999 (open access)

15th Street News (Midwest City, Okla.), Vol. 28, No. 26, Ed. 1 Friday, April 23, 1999

Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date: April 23, 1999
Creator: Pace, Joshua
Object Type: Newspaper
System: The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 33, No. [25], Ed. 1 Friday, April 23, 2004 (open access)

15th Street News (Midwest City, Okla.), Vol. 33, No. [25], Ed. 1 Friday, April 23, 2004

Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date: April 23, 2004
Creator: Rollman, Jon
Object Type: Newspaper
System: The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 39, No. 25, Ed. 1 Friday, April 23, 2010 (open access)

15th Street News (Midwest City, Okla.), Vol. 39, No. 25, Ed. 1 Friday, April 23, 2010

Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date: April 23, 2010
Creator: Price, Racheal
Object Type: Newspaper
System: The Gateway to Oklahoma History
2010 Census: Plans for Census Coverage Measurement Are on Track, but Additional Steps Will Improve Its Usefulness (open access)

2010 Census: Plans for Census Coverage Measurement Are on Track, but Additional Steps Will Improve Its Usefulness

A letter report issued by the Government Accountability Office with an abstract that begins "Assessing the accuracy of the census is essential given that census data are used to apportion seats in Congress, to redraw congressional districts, and for many other public and private purposes. The U.S. Census Bureau's (Bureau) Census Coverage Measurement program (CCM) is to assess the accuracy of the 2010 Census and improve the design of operations for the 2020 Census. In April 2008, GAO recommended that the Bureau identify how it would relate CCM results--where the 2010 Census was accurate and inaccurate--to census operations to improve future censuses. Knowing where the 2010 Census was inaccurate can help inform research to improve the 2020 Census. GAO was asked to examine (1) the status of CCM planning and (2) the effects of design decisions since GAO issued its April 2008 report. GAO reviewed Bureau documents related to CCM design and National Academy of Sciences reports, and interviewed responsible Bureau officials."
Date: April 23, 2010
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
34th Annual Stockholders Meeting for Phillips Petroleum Co.

34th Annual Stockholders Meeting for Phillips Petroleum Co.

Photograph of the 34th Annual Stockholders Meeting for Phillips Petroleum Co., April 23, 1951.
Date: April 23, 1951
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History
s = 3600 is also necessary (open access)

s = 3600 is also necessary

None
Date: April 23, 1975
Creator: Foley, K. J.
Object Type: Report
System: The UNT Digital Library
3D Magnetotelluic characterization of the Coso GeothermalField (open access)

3D Magnetotelluic characterization of the Coso GeothermalField

Electrical resistivity may contribute to progress inunderstanding geothermal systems by imaging the geometry, bounds andcontrolling structures in existing production, and thereby perhapssuggesting new areas for field expansion. To these ends, a dense grid ofmagnetotelluric (MT) stations plus a single line of contiguous bipolearray profiling has been acquired over the east flank of the Cosogeothermal system. Acquiring good quality MT data in producing geothermalsystems is a challenge due to production related electromagnetic (EM)noise and, in the case of Coso, due to proximity of a regional DCintertie power transmission line. To achieve good results, a remotereference completely outside the influence of the dominant source of EMnoise must be established. Experimental results so far indicate thatemplacing a reference site in Amargosa Valley, NV, 65 miles from the DCintertie, isstill insufficient for noise cancellation much of the time.Even though the DC line EM fields are planar at this distance, theyremain coherent with the nonplanar fields in the Coso area hence remotereferencing produces incorrect responses. We have successfully unwrappedand applied MT times series from the permanent observatory at Parkfield,CA, and these appear adequate to suppress the interference of thecultural EM noise. The efficacy of this observatory is confirmed bycomparison to stations taken using an ultra-distant …
Date: April 23, 2007
Creator: Newman, Gregory A.; Hoversten, G. Michael; Wannamaker, Philip E. & Gasperikova, Erika
Object Type: Article
System: The UNT Digital Library
80th Texas Legislature, Regular Session, House Bill 674, Chapter 8 (open access)

80th Texas Legislature, Regular Session, House Bill 674, Chapter 8

Bill introduced by the Texas House of Representatives relating to the authority of the Department of Information Resources to accept gifts and grants.
Date: April 23, 2007
Creator: Texas. Legislature. House of Representatives.
Object Type: Legislative Document
System: The Portal to Texas History
80th Texas Legislature, Regular Session, House Bill 675, Chapter 9 (open access)

80th Texas Legislature, Regular Session, House Bill 675, Chapter 9

Bill introduced by the Texas House of Representatives relating to the membership of the governing board of the Department of Information Resources.
Date: April 23, 2007
Creator: Texas. Legislature. House of Representatives.
Object Type: Legislative Document
System: The Portal to Texas History
80th Texas Legislature, Regular Session, Senate Bill 135, Chapter 10 (open access)

80th Texas Legislature, Regular Session, Senate Bill 135, Chapter 10

Bill introduced by the Texas Senate relating to the ability of public school employees to communicate with members of a school district board of trustees.
Date: April 23, 2007
Creator: Texas. Legislature. Senate.
Object Type: Legislative Document
System: The Portal to Texas History
80th Texas Legislature, Regular Session, Senate Bill 300, Chapter 11 (open access)

80th Texas Legislature, Regular Session, Senate Bill 300, Chapter 11

Bill introduced by the Texas Senate relating to the duration of judgment liens in favor of the state.
Date: April 23, 2007
Creator: Texas. Legislature. Senate.
Object Type: Legislative Document
System: The Portal to Texas History
80th Texas Legislature, Regular Session, Senate Bill 330, Chapter 12 (open access)

80th Texas Legislature, Regular Session, Senate Bill 330, Chapter 12

Bill introduced by the Texas Senate relating to enforcement of certain vehicle weight and safety requirements by a noncommissioned employee of the Department of Public Safety of the State of Texas.
Date: April 23, 2007
Creator: Texas. Legislature. Senate.
Object Type: Legislative Document
System: The Portal to Texas History
80th Texas Legislature, Regular Session, Senate Bill 332, Chapter 13 (open access)

80th Texas Legislature, Regular Session, Senate Bill 332, Chapter 13

Bill introduced by the Texas Senate relating to the responsibility of an employer in relation to a person who drives a commercial motor vehicle; providing a criminal penalty.
Date: April 23, 2007
Creator: Texas. Legislature. Senate.
Object Type: Legislative Document
System: The Portal to Texas History
80th Texas Legislature, Regular Session, Senate Concurrent Resolution 53 (open access)

80th Texas Legislature, Regular Session, Senate Concurrent Resolution 53

Concurrent resolution introduced by the Texas Senate and House of Representatives proclaiming April 15 through 22, 2007, Days of Remembrance in memory of the victims of the Holocaust.
Date: April 23, 2007
Creator: Texas. Legislature. Senate.
Object Type: Legislative Document
System: The Portal to Texas History
81st Texas Legislature, Regular Session, House Bill 873, Chapter 2 (open access)

81st Texas Legislature, Regular Session, House Bill 873, Chapter 2

Bill introduced by the Texas House of Representatives relating to incentives for the film, television, video, and digital interactive media production industries.
Date: April 23, 2009
Creator: Texas. Legislature. House of Representatives.
Object Type: Legislative Document
System: The Portal to Texas History