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Selected Works

1989

Articles 1 - 6 of 6

Full-Text Articles in Engineering

Situs Judi Poker Online, Agen Poker Jul 1989

Situs Judi Poker Online, Agen Poker

agen domino

Mengapa orang-orang ini tergagap? Sempurna dalam satu-satunya kunci, orang-orang ini di Amerika adalah bulan pemain poker di bulan avid gamer, baik di internet maupun offline, mereka termasuk keakraban dengan poker yang banyak pemain ingin secara online mengerti. Izinkan saya untuk menguji dan menunjukkan ...

Dalam hanya tinggal poker, biasanya personal ekonomi dengan yang aktif bermain sendiri, sendiri memiliki kecenderungan bermain situs judi poker online seperti yang dirancang dalam arti dieksekusi Anda, olahraga kapasitas daripada video game probabilitas. Kursus yang Anda sendiri membuat kartu bermain sendiri diperlakukan mungkin berbeda secara signifikan berdasarkan masalah sendiri berada di dalam. Jika rekreasi adalah orang-orang …

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Measuring The Nanomechanical Properties And Surface Forces Of Materials Using An Atomic Force Microscope, Nancy Burnham, Richard Colton Jun 1989

Measuring The Nanomechanical Properties And Surface Forces Of Materials Using An Atomic Force Microscope, Nancy Burnham, Richard Colton

Nancy A. Burnham

An atomic force microscope(AFM) has been configured so that it measures the force between a tip mounted on a cantilever beam and a sample surface as a function of the tip–surface separation. This allows the AFM to study both the nanomechanical properties of the sample and the forces associated with the tip–surface interaction. More specifically, the AFM can measure the elastic and plastic behavior and hardness via nanoindentation,van der Waals forces, and the adhesion of thin‐film and bulk materials with unprecedented force and spatial resolution. The force resolution is currently 1 nanonewton, and the depth resolution is 0.02 nm. Additionally, …

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Progress In The Development Of Hemp Protection Standards For C3i Facilities, George H. Baker, Clinton R. Gordon Apr 1989

Progress In The Development Of Hemp Protection Standards For C3i Facilities, George H. Baker, Clinton R. Gordon

George H Baker

DoD is involved in EMP standards development efforts which culminate 25 years of research. This paper previews an EMP protection standard for fixed, ground-based communication facilities. The standard uses a low-risk hardening approach which depends on an electromagnetic barrier comprised of a conducting shield to prevent harmful transients from reaching communication electronics. The standard is the first of its kind and is being instituted as MIL-STD-188-125.

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Pitch Of Complex Tones With Many High‐Order Harmonics, Adrianus J. M. Houtsma, J. Smurzynski Jan 1989

Pitch Of Complex Tones With Many High‐Order Harmonics, Adrianus J. M. Houtsma, J. Smurzynski

Jacek Smurzynski

Pitch identification and pitch discrimination experiments were performed for complex tones with missing fundamentals between 200 and 300 Hz and with many successive harmonics varying from low (below the 10th) to high (above the 25th) harmonic order. Identification performance was found to degrade with increasing harmonic order from an essentially perfect to an asymptotic level that was clearly less than perfect but much better than chance. Just‐noticeable differences in (missing) fundamental frequency were found to increase, with increasing harmonic order, from a fraction of 1 Hz to an asymptotic level of about 5 Hz. Influence of phase was found only …

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Bubble Break-Up In Air-Sparged Bioreactors, Michael Prince, J. Walters, H. Blanch Dec 1988

Bubble Break-Up In Air-Sparged Bioreactors, Michael Prince, J. Walters, H. Blanch

Michael J. Prince

No abstract provided.

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Thermal And Rheological Properties Of A Liquid-Crystalline Polyurethane, William Macknight, Peter J. Stenhouse, Enrique M. Valles, Simon W. Kantor Dec 1988

Thermal And Rheological Properties Of A Liquid-Crystalline Polyurethane, William Macknight, Peter J. Stenhouse, Enrique M. Valles, Simon W. Kantor

William MacKnight

A novel liquid-crystalline polyurethane (LCPU) was synthesized by the condensation of
2,4-toluenediisocyanate and 4,4'-bis(6-hydroxyhexoxy)biphenyl. Solution polymerization in dimethylformamide
produced intrinsic viscosities in the range 0.30-0.57 dL/g. Differential scanning calorimetry shows a crystalline
melting transition that is highly dependent on molecular weight and thermal history and a clearing transition
that is virtually independent of both. Parallel-plate rheometry results are consistent with the presence of
a liquid-crystalline phase, coexisting with a small amount of three-dimensional crystallinity, between 152 and
166 °C. Dynamic mechanical measurements reveal an unusually high elastic modulus of 180 MPa in the plateau
region above Tg, compared with 6 …

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