Results 171 to 180 of about 2,730 (215)
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Terahertz normal mode relaxation in pentaerythritol tetranitrate
The Journal of Chemical Physics, 2011Normal vibrational modes for a three-dimensional defect-free crystal of the high explosive pentaerythritol tetranitrate were obtained in the framework of classical mechanics using a previously published unreactive potential-energy surface [J. Phys. Chem. B 112, 734 (2008)].
Andrey, Pereverzev, Thomas D, Sewell
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Detonation waves in pentaerythritol tetranitrate
Journal of Applied Physics, 1997Fabry–Perot laser interferometry was used to obtain nanosecond time resolved particle velocity histories of the free surfaces of tantalum discs accelerated by detonating pentaerythritol tetranitrate (PETN) charges and of the interfaces between PETN detonation products and lithium fluoride crystals.
Craig M. Tarver +2 more
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Fractoemission from single-crystal pentaerythritol tetranitrate
Journal of Applied Physics, 1985The emission of electrons, photons, and positive ions was monitored during three-point bending, compression, and fast compression (impact loading) of single-crystal pentaerythritol tetranitrate (PETN). The emission appears to be fracture mode dependent with negligible emission from cleavage-type fracture and very intense electron emission accompanying ...
M. H. Miles +2 more
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Degradation of Pentaerythritol Tetranitrate (PETN) by Granular Iron
Environmental Science & Technology, 2008Pentaerythritol tetranitrate (PETN), a nitrate ester, is used primarily as an explosive. It is of environmental concern, posing a threat to aquatic organisms with an estimated EC50 five times greater than that of RDX. This study evaluated the kinetics and products of PETN degradation in the presence of granular iron.
Li, Zhuang, Lai, Gui, Robert W, Gillham
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Electrochemiluminescence Enzyme Immunoassays for TNT and Pentaerythritol Tetranitrate
Analytical Chemistry, 2003Electrochemiluminescence enzyme immunoassays for 2,4,6-trinitrotoluene (TNT) and pentaerythritol tetranitrate (PETN) are described. The latter is, to the best of our knowledge, the first report of an immunoassay for PETN. Haptens corresponding to these explosives were covalently attached to high-affinity dextran-coated paramagnetic beads.
Robert, Wilson +2 more
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Antianginal effects of pentaerythritol tetranitrate.
La Nouvelle presse medicale, 198031 patients with confirmed angina pectoris and selected to form an homogenous group entered this double-blind study. Following a period of observation during which the patients were on a placebo and only took nitroglycerin to relieve pain, a randomized treatment of either dipyramidole (DPM) 75 mg or pentaerythritol tetranitrate (PETN) 80 mg 8-hourly ...
E, Arce-Gomez +3 more
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Free Energy Based Equation of State for Pentaerythritol Tetranitrate
The Journal of Physical Chemistry A, 2016An equation of state for the energetic molecular crystal pentaerythritol tetranitrate (PETN) has been developed from a parametrized model for its Helmholtz free energy. The ion motion contribution to the free energy is represented by a sum of Debye models for the vibrational modes of mainly lattice phonon and intramolecular character. The dependence of
M J, Cawkwell +3 more
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The crystalline structure of pentaerythritol tetranitrate
Mineralogical Magazine and Journal of the Mineralogical Society, 1925Pentaerythritol tetranitrate, C(CH2ONO2)4, is an interesting compound structurally, since there is, in the molecule, a carbon atom with foul' like groups (–CH2ONO2) attached to it. The molecule is therefore of the type CX4. It was hoped that an examination of the crystals by means of X-rays would show how far the molecule retains its form and symmetry ...
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Supercritical shear in shocked pentaerythritol tetranitrate
Applied Physics Letters, 1992Supercritical shear occurs when the shear stress exceeds the strength of the perfect crystal. An estimate of the theoretical strength of the molecular crystal pentaerythritol tetranitrate is compared to experimental observations of the shock response of this explosive.
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The nonaqueous microtitration of pentaerythritol tetranitrate (PETN)
Mikrochimica Acta, 1978PETN has been determined by nonaqueous titration as an acid in pyridine and l, l,3,3-tetramethylguanidine. The titrant was tetrabutylammonium hydroxide. Endpoints were determined potentiometrically by a glass/modified calomel electrode system, or by two polarized platinum electrodes.
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