Results 211 to 220 of about 22,680 (243)
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Notes for a Short Course: Studies in Geology, 1987
Diatoms are unicellular golden brown algae, that are characterized by an external box-like skeleton (or frustule) of opaline silica. Diatom frustules are commonly very intricate and varied, and the patterns and types of ornamentation of the frustule form the basis of nearly all diatom taxonomy. The size of diatom frustules ranges from less than one μm (
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Diatoms are unicellular golden brown algae, that are characterized by an external box-like skeleton (or frustule) of opaline silica. Diatom frustules are commonly very intricate and varied, and the patterns and types of ornamentation of the frustule form the basis of nearly all diatom taxonomy. The size of diatom frustules ranges from less than one μm (
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Rotational transfer in diatom–diatom collisions
Chemical Physics Letters, 2001Abstract We present a kinematic hard ellipsoid model of rotational transfer in diatom–diatom collisions. The model extends the principles of the angular momentum (AM) model of rotational transfer (RT) developed for atom–diatom collisions and the hard ellipsoid model of the repulsive potential.
R.J. Marsh, A.J. McCaffery
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Zeitschrift f�r Rechtsmedizin, 1988
An examination is made of the applicability of quantitative and qualitative diatom analysis to the diagnosis of death by drowning, definition of the environment in which drowning occurred, and delimitation of the area where it occurred. the material comprises 107 bodies of subjects known or suspected to have died by drowning together with a control ...
A, Auer, M, Möttönen
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An examination is made of the applicability of quantitative and qualitative diatom analysis to the diagnosis of death by drowning, definition of the environment in which drowning occurred, and delimitation of the area where it occurred. the material comprises 107 bodies of subjects known or suspected to have died by drowning together with a control ...
A, Auer, M, Möttönen
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Bioinspiration & Biomimetics, 2013
The diatoms are ubiquitous, exist in large numbers and show a great diversity of features on their porous silica structures. Therefore, they inspire the fabrication of nanostructured templates for nanoimprint processes (NIL), where large structured areas with nanometer precision are required.
M R, Belegratis +4 more
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The diatoms are ubiquitous, exist in large numbers and show a great diversity of features on their porous silica structures. Therefore, they inspire the fabrication of nanostructured templates for nanoimprint processes (NIL), where large structured areas with nanometer precision are required.
M R, Belegratis +4 more
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Diatom-diatom reactive scattering in hypercylindrical coordinates
International Journal of Quantum Chemistry, 2009We present a combination of hyperspherical and cylindrical coordinates to describe diatom–diatom reactions in which one diatom bond is nonreactive. This hybrid system of coordinates is termed hypercylindrical. It naturally leads to a description of the reaction as an atom–diatom reaction embedded within a larger polyatomic framework.
Qiyan Sun, Joel M. Bowman
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Semiclassical theory for diatom-diatom collisions
Chemical Physics Letters, 1983Abstract A semiclassical approach to diatom-diatom collisions is presented. The method involves a classical treatment of the translational and rotational motion of both molecules. The vibrational degrees of freedom are quantized using a Morse oscillator approximation. The method is used to evaluate the accuracy of previous calculations based upon the
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Forensic Science International, 1998
Six illustrative cases of homicidal drowning are reported in which the diatom test for drowning was a useful adjunct to the medicolegal investigation of death. In all six cases, diatom frustules were recovered from the femoral bone marrow. In five cases, diatoms extracted from the bone marrow were compared with diatoms obtained from samples of putative
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Six illustrative cases of homicidal drowning are reported in which the diatom test for drowning was a useful adjunct to the medicolegal investigation of death. In all six cases, diatom frustules were recovered from the femoral bone marrow. In five cases, diatoms extracted from the bone marrow were compared with diatoms obtained from samples of putative
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Science, 1967
In R. E. Norris's review of The Diatoms of the United States Exclusive of Alaska and Hawaii, volume 1, by Ruth Patrick and Charles; W. Reimer [153, 1369 (16 Sept. 1966)], the Introduction, which was signed only by Patrick, was erroneously attributed to Patrick and Reimer.
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In R. E. Norris's review of The Diatoms of the United States Exclusive of Alaska and Hawaii, volume 1, by Ruth Patrick and Charles; W. Reimer [153, 1369 (16 Sept. 1966)], the Introduction, which was signed only by Patrick, was erroneously attributed to Patrick and Reimer.
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