Access

Resource Type

Partner

Collection

Serial/Series Title

Country

States

Counties

Year

Month

Day

Language

342 Matching Results

Start Over Year 1998 Day 7th

Results open in a new window/tab.

Results: 1 - 24 of 342 next

(open access)

Raman Spectroscopy Characterization of amorphous carbon coatings for computer hard disks

Amorphous carbon films are used as protective coatings on magnetic media to protect the magnetic layer from wear and abrasion caused by the read/write head during hard disk drive start-up and operation. A key requirement in increasing the storage capacity and reliability of hard-disk drives is improving the performance of these coatings. This cooperative agreement used optical characterization techniques developed at LBNL to study thin-film hard disk media produced by Seagate Technology, major US hard drive manufacturer. The chief scientific goal was relating quantitatively the results of the optical characterization to the underlying chemical structure of the overcoat. In a collaboration with Seagate, LBNL, and Cambridge University, optical and electron-based characterization were used to evaluate the chemical structure of overcoats. The sp3 fraction of the sputtered amorphous carbon films was measured quantitatively for the first time and related to the optical spectroscopy results. This work and other selected aspects of the research performed under the agreement were presented at technical meetings and published in the open literature. The chief technical goal was designing manufacturing processes for the protective carbon overcoat for use in new generations of Seagate disk drives. To this end, joint research carried out under this agreement enabled …

Date: May 7, 1998

Creator: Ager, Joel W., III

Object Type: Report

System: The UNT Digital Library

Oral History Interview with George Charland, December 7, 1998

Access: Use of this item is restricted to the UNT Community

Transcript of an interview with George E. Charland, a Native American Marine Corps veteran, concerning his experiences during World War II. Charland discusses his experiences with the 3rd Marine Defense Battalion during the Japanese attack at Pearl Harbor on December 7, 1941; his experiences with the 2nd Marine Regiment, 1st Marine Division, at Guadalcanal, 1942; his experiences with E Company, 2nd Battalion, 2nd Marine Regiment, 2nd Marine Division, at Tarawa, 1943; his experiences with the 4th Marine Division at Saipan and Tinian, 1944, and Iwo Jima, 1945; medical discharge in April, 1945.

Date: December 7, 1998

Creator: Alexander, William J. & Charland, George E.

Object Type: Book

System: The UNT Digital Library

(open access)

The Oklahoma Daily (Norman, Okla.), Vol. 83, No. 40, Ed. 1 Wednesday, October 7, 1998

Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes national, local, and campus news along with advertising.

Date: October 7, 1998

Creator: Allam, Heather

Object Type: Newspaper

System: The Gateway to Oklahoma History

(open access)

Iron-Phosphate Ceramics for Solidification of Mixed Low-Level Waste

A method of immobilizing mixed low-level waste is provided which uses low cost materials and has a relatively long hardening period. The method includes: forming a mixture of iron oxide powders having ratios, in mass %, of FeO: Fe{sub 2}O{sub 3}: Fe{sub 3}O{sub 4} equal to 25-40: 40-10: 35-50, or weighing a definite amount of magnitite powder. Metallurgical cinder can also be used as the source of iron oxides. A solution of the orthophosphoric acid, or a solution of the orthophosphoric acid and ferric oxide, is formed and a powder phase of low-level waste and the mixture of iron oxide powders or cinder (or magnetite powder) is also formed. The acid solution is mixed with the powder phase to form a slurry with the ratio of components (mass %) of waste: iron oxide powders or magnitite: acid solution = 30-60: 15-10: 55-30. The slurry is blended to form a homogeneous mixture which is cured at room temperature to form the final product.

Date: August 7, 1998

Creator: Aloy, Albert S.; Kovarskaya, Elena N.; Koltsova, Tatiana I.; Macheret, Yevgeny; Medvedev, Pavel G. & Todd, Terry

Object Type: Patent

System: The UNT Digital Library

(open access)

EFFECTS OF MINERALOGY AND CATION-EXCHANGE CAPACITY ON LIGHIUM SORPTION TO YUCCA MOUNTAIN TUFFS.

None

Date: May 7, 1998

Creator: Anghel, I.; Turnin, H. J.; Reimus, P. W. & Carey, J. W.

Object Type: Report

System: The UNT Digital Library