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Missouri University of Science and Technology

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Missouri S&T Magazine, December 1984, Miner Alumni Association Dec 1984

Missouri S&T Magazine, December 1984, Miner Alumni Association

Missouri S&T Magazine

No abstract provided.


Threshold Effect In Mg-Doped Lithium Niobate, K. L. Sweeney, L. E. Halliburton, D. A. Bryan, R. R. Rice, Robert Gerson, H. E. Tomaschke Dec 1984

Threshold Effect In Mg-Doped Lithium Niobate, K. L. Sweeney, L. E. Halliburton, D. A. Bryan, R. R. Rice, Robert Gerson, H. E. Tomaschke

Physics Faculty Research & Creative Works

Optical absorption spectra were obtained after reducing (i.e., vacuum annealing) a series of LiNbO3 crystals grown from melts having various Mg concentrations and Li/Nb ratios. A band peaking at 500 nm, and assigned to oxygen vacancies containing two electrons, was the only absorption present in one set of crystals following reduction. In contrast, two overlapping bands peaking near 1200 and 760 nm were present in the other set of crystals immediately after the reduction. The 1200-nm band is assigned to a previously unreported electron trap and the 760-nm band to oxygen vacancies containing only one electron. These data are interpreted …


Increased Optical Damage Resistance In Lithium Niobate, D. A. Bryan, Robert Gerson, H. E. Tomaschke Dec 1984

Increased Optical Damage Resistance In Lithium Niobate, D. A. Bryan, Robert Gerson, H. E. Tomaschke

Physics Faculty Research & Creative Works

We have confirmed greatly improved resistance to photorefractive damage in compositions of lithium niobate containing 4.5 at. % MgO or more. Holographic diffraction measurements of photorefraction demonstrated that the improved performance is due to a hundredfold increase in the photoconductivity, rather than a decrease in the Glass current. The diffraction efficiency shows an Arrhenius dependence on temperature, with an activation energy of 0.1 eV for the damage-resistant compositions, compared with 0.5 eV for undoped or low-magnesium compositions. The damage-resistant compositions are distinguished by a 2.83-μm absorption line instead of the usual 2.87-μm line due to the OH-stretch vibration.


Microprocessor-Based Pressure Controller, E. Redd, John T. Park Dec 1984

Microprocessor-Based Pressure Controller, E. Redd, John T. Park

Physics Faculty Research & Creative Works

A device for automatic control of pressure in an ion-atom scattering experiment has been constructed. The system was modeled to achieve the minimum time for transition from one pressure to another. The pressure controller "learns" the system response and iterates the parameters used in "profiling" the valve voltage to reduce the transition time. The device has been used with two different scattering chambers and has worked well with both.


The Oxidation Of Dilute Alloys Of Magnesium In Aluminium, Hollis P. Leighly, A. Alam Dec 1984

The Oxidation Of Dilute Alloys Of Magnesium In Aluminium, Hollis P. Leighly, A. Alam

Materials Science and Engineering Faculty Research & Creative Works

The oxide layers developed during the oxidation of aluminum alloys containing 500 and 1000 PPM of magnesium at 850K were examined with the aid of electron spectroscopy for chemical analysis. The magnesium content of the oxide layers was relatively high because of the preferential depletion of the magnesium atoms from the base alloys. Near the outer surfaces of the oxide layers, spinel (MgAl2O4) was the predominant magnesium-bearing compound. At depth, MgO was more dominant. The preferential depletion of magnesium from the alloys injected vacancies into the material. This led to the formation of defect clusters. The presence of these defect …


The Missouri Miner, November 29, 1984 Nov 1984

The Missouri Miner, November 29, 1984

The Missouri Miner Newspaper

No abstract provided.


The Missouri Miner, November 15, 1984 Nov 1984

The Missouri Miner, November 15, 1984

The Missouri Miner Newspaper

No abstract provided.


Reliability Verification Using Service Loads, Brent W. Hall, Andrzej S. Nowak Nov 1984

Reliability Verification Using Service Loads, Brent W. Hall, Andrzej S. Nowak

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Non-Uniformly Compressed Stiffened Elements, Venkatakrishnan Kalyanaraman, P. Ramakrishna Nov 1984

Non-Uniformly Compressed Stiffened Elements, Venkatakrishnan Kalyanaraman, P. Ramakrishna

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Cold Formed Steel In Folded Truss Decks, Robert W. Dannemann Nov 1984

Cold Formed Steel In Folded Truss Decks, Robert W. Dannemann

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Local Buckling In Curved Box Members, Issam E. Harik, Raghuram Ekambaram Nov 1984

Local Buckling In Curved Box Members, Issam E. Harik, Raghuram Ekambaram

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Influence Of Manufacturing Technology On Cold Formed Structural Members, George T. Halmos Nov 1984

Influence Of Manufacturing Technology On Cold Formed Structural Members, George T. Halmos

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


How To Ensure Quality Construction In Light Steel Framing, Patrick J. Boyd, J. S. Traw, D. R. Wootton, Calvin Robert Clauer Nov 1984

How To Ensure Quality Construction In Light Steel Framing, Patrick J. Boyd, J. S. Traw, D. R. Wootton, Calvin Robert Clauer

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Buckling Of Plates Containing Openings, Fong-Yen Chow, Rangachari Narayanan Nov 1984

Buckling Of Plates Containing Openings, Fong-Yen Chow, Rangachari Narayanan

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Analysis Of Locally Buckled Thin-Walled Columns, Gale P. Mulligan, Teoman Peköz Nov 1984

Analysis Of Locally Buckled Thin-Walled Columns, Gale P. Mulligan, Teoman Peköz

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Inelastic Torsional-Flexural Buckling Of Cold-Formed Open Section Under Eccentric Load, Jang Dejin, Chen Shaofan Nov 1984

Inelastic Torsional-Flexural Buckling Of Cold-Formed Open Section Under Eccentric Load, Jang Dejin, Chen Shaofan

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Geometric Nonlinear Dynamic Analysis Of Locally Buckled Frames, George E. Blandford, Shien T. Wang, Neng T. Wang Nov 1984

Geometric Nonlinear Dynamic Analysis Of Locally Buckled Frames, George E. Blandford, Shien T. Wang, Neng T. Wang

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Earthquake Resistance Of Light-Gauge Steel Frames, Testuro Ono Nov 1984

Earthquake Resistance Of Light-Gauge Steel Frames, Testuro Ono

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


The Effect Of End Supports On The Behavior Of Braced Girts And Purlins, Dimos Polyzois, Peter C. Birkemoe Nov 1984

The Effect Of End Supports On The Behavior Of Braced Girts And Purlins, Dimos Polyzois, Peter C. Birkemoe

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Load Carrying Capacity Of Z-Purlins With A.C. Sheet Cladding, S. Seetharaman, P. R. Natarajan, A. C. R. Djugash Nov 1984

Load Carrying Capacity Of Z-Purlins With A.C. Sheet Cladding, S. Seetharaman, P. R. Natarajan, A. C. R. Djugash

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Earthquake Resistance Of Industrial Steel Storage Racks, C. K. Chen, R. E. Scholl Nov 1984

Earthquake Resistance Of Industrial Steel Storage Racks, C. K. Chen, R. E. Scholl

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Light-Weight Steel Based Floor Systems For Multi-Storey Buildings, H. Urschel, Rolf Baehre Nov 1984

Light-Weight Steel Based Floor Systems For Multi-Storey Buildings, H. Urschel, Rolf Baehre

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Stress Concentrations In The Joints Of A Ladder Frame Subjected To Torsion, J. Ergatoudis, T. H. G. Megson, M. H. Datoo Nov 1984

Stress Concentrations In The Joints Of A Ladder Frame Subjected To Torsion, J. Ergatoudis, T. H. G. Megson, M. H. Datoo

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Criteria For Connection Spacing In Cold-Formed Steel, Muzaffer Yener Nov 1984

Criteria For Connection Spacing In Cold-Formed Steel, Muzaffer Yener

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Simplified Design Approach For Laterally Braced Purlins Subjected To Wind Uplift, Roger A. Laboube Nov 1984

Simplified Design Approach For Laterally Braced Purlins Subjected To Wind Uplift, Roger A. Laboube

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Design Aids For Stiffened Channels, James A. Cran, Joseph Williams Nov 1984

Design Aids For Stiffened Channels, James A. Cran, Joseph Williams

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Load And Resistance Factor Design Of Cold-Formed Steel Structural Members, Theodore V. Galambos, Wei-Wen Yu Nov 1984

Load And Resistance Factor Design Of Cold-Formed Steel Structural Members, Theodore V. Galambos, Wei-Wen Yu

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Comparative Study Of Load And Resistance Factor Design Vs. Allowable Stress Design, Brian K. Snyder, Lan-Cheng Pan, Wei-Wen Yu Nov 1984

Comparative Study Of Load And Resistance Factor Design Vs. Allowable Stress Design, Brian K. Snyder, Lan-Cheng Pan, Wei-Wen Yu

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Strength Of Biaxially Compressed Perforated Plates, Rangachari Narayanan, Fong-Yen Chow Nov 1984

Strength Of Biaxially Compressed Perforated Plates, Rangachari Narayanan, Fong-Yen Chow

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Response Of Frames Having Thin-Walled Columns, Srinivasan Sridharan, M. A. Ali Nov 1984

Response Of Frames Having Thin-Walled Columns, Srinivasan Sridharan, M. A. Ali

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.