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1

Digitale Medien

Topological analysis of some special graphs. III. Regular polyhedra (1991)

Lee, Shyi-Long ; Luo, Yeung-Long ; Yeh, Yeong-Nan

Springer

Journal of cluster science 2 (1991), S. 105-116

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ISSN: 1572-8862

Schlagwort(e): Electronic structure ; cluster ; eigenvectors ; Kronecker product

Quelle: Springer Online Journal Archives 1860-2000

Thema: Maschinenbau , Physik

Notizen: Abstract A regular polyhedron is isomorphic to a cluster on which every face has same number of bonds and every atom has an equal number of coordinating atoms. A general strategy for generating the eigenvectors and the eigenvalues of regular polyhedra is given. Net sign analyses are also performed on the eigenvectors of regular polyhedra. The results provide us a quick way to grasp the topological feature of the electronic structure of clusters having interesting topology.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00702951

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2

Digitale Medien

Topological analysis of some special graphs: III. Regular polyhedra (1991)

Lee, Shyi-Long ; Luo, Yeung-Long ; Yeh, Yeong-Nan

Springer

Journal of cluster science 2 (1991), S. 219-229

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ISSN: 1572-8862

Schlagwort(e): Atomic cluster ; cluster bonding ; cluster structure

Quelle: Springer Online Journal Archives 1860-2000

Thema: Maschinenbau , Physik

Notizen: Abstract A regular polyhedron is isomorphic to a cluster on which every face has same number of bonds and every atom has an equal number of coordinating atoms. A general strategy for generating the eigenvectors and the eigenvalues of regular polyhedra is given. Not sign analyses are also performed on the eigenvectors of regular polyhedra. The results provide us a quick way to grasp the topological feature of the electronic structure of clusters having interesting topology.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00702829

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3

Digitale Medien

Early stages of laser mixing process in Sb/Ge multilayer thin films (1993)

Serna, R. ; Afonso, C. N. ; Petford-Long, A. K. ; [weitere]

Springer

Applied physics 56 (1993), S. 132-137

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ISSN: 1432-0630

Schlagwort(e): 64.75.+g ; 78.90.+t ; 81.40.-z

Quelle: Springer Online Journal Archives 1860-2000

Thema: Maschinenbau , Physik

Notizen: Abstract The onset of mixing at the interfaces between Sb and Ge in thin multilayered films containing two or four layers has been studied. The films were irradiated with nanosecond laser pulses in order to trigger mixing, and in situ reflectivity measurements were used to follow the transformation in real-time. Cross sectional transmission electron microscopy analysis was used to study both the structure and the composition profile before and after irradiation. A threshold irradiation energy exists for the onset of mixing, below which roughening of the interface between the layers is observed, together with recrystallization of the surface Sb layer following melting. The results are consistent with a melting/diffusion process which is inhomogeneously nucleated at the interface between the top Sb and Ge layers. Once mixing is initiated an amorphous Sb-Ge layer of constant thickness is formed, corresponding to mixing along a well defined planar melt front. Voids are observed at the former Sb/Ge interface, which may be related to interfacial stress in the as-grown configuration.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00517680

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4

Digitale Medien

Structural ripple formation in Ge/Sb multilayers induced by laser irradiation (1994)

Serna, R. ; Afonso, C. N. ; Petford-Long, A. K. ; [weitere]

Springer

Applied physics 58 (1994), S. 197-202

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ISSN: 1432-0630

Schlagwort(e): 64.75.+g ; 78.90.+t ; 81.40.−z

Quelle: Springer Online Journal Archives 1860-2000

Thema: Maschinenbau , Physik

Notizen: Abstract Thin multilayer films (Ge/Sb/Ge/Sb/Si substrate) have been irradiated with single nanosecond laser pulses (λ=193 nm). Real-Time Reflectivity (RTR) measurements have been used to follow the transformation in situ and cross-sectional transmission electron microscope analysis was used to study both the microstructure and the composition profile before and after irradiation. Melting and mixing are both found to nucleate at preferential sites in the upper Ge/Sb interface. During this process the film surface topography changes in a way not previously seen, and rippling of the film is observed due to lateral mass flow induced in the Sb layer underneath the surface, most probably arising from volume changes upon melting. For the highest irradiation energy densities, melting of the whole multilayer configuration takes place, the ripples are no longer observed, and following cooling and solidification, a mixed amorphous GeSb film is formed.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00332179

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5

Digitale Medien

A new method to obtain chain codes from y-axis representation of a region in a binary image (1992)

Chang, Long-Wen ; Leu, Kuen-Long

Springer

Multidimensional systems and signal processing 3 (1992), S. 79-87

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ISSN: 1573-0824

Schlagwort(e): Chain codes ; y-axis representation ; computer vision ; image processing ; representation transformation

Quelle: Springer Online Journal Archives 1860-2000

Thema: Elektrotechnik, Elektronik, Nachrichtentechnik

Notizen: Abstract Chain codes [Freeman 1974; Charavarty 1982; Kim, Lee and Kim 1988; Morrin 1976; Pavlidis 1978] and y-axis representation [Merrill 1973] are both commonly used representation of a region in a binary image. The y-axis representation is very efficient for some geometric applications [Chang and Leu 1990] and morphological operations [Ji, Piper and Tang 1989]. However, it is not efficient to compute the properties on the contour. In this paper, a new and simple algorithm other than Kim's [Kim, Lee and Kim 1988] to convert the y-axis representation to a sequence of chain codes is developed.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01941019

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6

Unbekannt

Early stages of laser mixing process in Sb/Ge multilayer thin films (1993)

Serna, R. ; Afonso, C. N. ; Petford-Long, A. K. ; [weitere]

Springer

In: Applied Physics A: Materials Science and Processing. 1993; 56(2): 132-137. Published 1993 Feb 01. doi: 10.1007/bf00517680.

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Publikationsdatum: 1993-02-01

Print ISSN: 0947-8396

Digitale ISSN: 1432-0630

Thema: Maschinenbau , Physik

Publiziert von Springer

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7

Unbekannt

Structural ripple formation in Ge/Sb multilayers induced by laser irradiation (1994)

Serna, R. ; Afonso, C. N. ; Petford-Long, A. K. ; [weitere]

Springer

In: Applied Physics A: Materials Science and Processing. 1994; 58(2): 197-202. Published 1994 Feb 01. doi: 10.1007/bf00332179.

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Publikationsdatum: 1994-02-01

Print ISSN: 0947-8396

Digitale ISSN: 1432-0630

Thema: Maschinenbau , Physik

Publiziert von Springer

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8

Unbekannt

A reappraisal of cholangiocarcinoma in patient with hepatolithiasis (1993)

Chen, Miin-Fu ; Jan, Yi-Yin ; Wang, Chia-Siu ; [weitere]

Wiley

In: Cancer. 1993; 71(8): 2461-2465. Published 1993 Apr 15. doi: 10.1002/1097-0142(19930415)71:8〈2461::aid-cncr2820710806〉3.0.co;2-7.

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Publikationsdatum: 1993-04-15

Print ISSN: 0008-543X

Digitale ISSN: 1097-0142

Thema: Biologie , Medizin

Publiziert von Wiley im Namen von American Cancer Society.

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9

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Obstructive jaundice secondary to ruptured hepatocellular carcinoma into the common bile duct. Surgical experiences of 20 cases (1994)

Chen, Miin-Fu ; Jan, Yi-Yin ; Jeng, Long-Bin ; [weitere]

Wiley

In: Cancer. 1994; 73(5): 1335-1340. Published 1994 Mar 01. doi: 10.1002/1097-0142(19940301)73:5〈1335::aid-cncr2820730505〉3.0.co;2-m.

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Publikationsdatum: 1994-03-01

Print ISSN: 0008-543X

Digitale ISSN: 1097-0142

Thema: Biologie , Medizin

Publiziert von Wiley im Namen von American Cancer Society.

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10

Digitale Medien

Purification and Partial Characterization of Immobilization Antigens from Ichthyophthirius multifiliis (1992)

LIN, TIAN-LONG ; DICKERSON, HARRY W.

Oxford, UK : Blackwell Publishing Ltd

The @journal of eukaryotic microbiology 39 (1992), S. 0

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ISSN: 1550-7408

Quelle: Blackwell Publishing Journal Backfiles 1879-2005

Thema: Biologie

Notizen: Ichthyophthirius multifiliis, a parasitic ciliate of freshwater fishes, was found to have surface antigens (Ag) which elieited immobilizing antibodies (Ab) when injected into rabbits. An effort was made to purify and characterize these Ag (referred to as immobilization Ag) because of their potential role in protective immunity in fishes. Mice immunized with theront cilia were used for production of immobilizing monoclonal antibodies (MAb). Hybridomas were screened by indirect immunofluorescent light microscopy and immobilization of live parasites. Six hybridomas producing immobilizing MAb were cloned. Immobilizing MAb were used to affinity purify Ag solubilized with Triton X-114 and Na deoxycholate. Two membrane protein Ag of approximately 48 and 60 kDa were identified. Immobilizing MAb failed to react with these Ag on Western blots and, conversely, MAb that reacted with the Ag on Western blots did not immobilize live organisms. These results suggest that immobilization required native conformational epitopes which were altered by Western blotting procedures. Individual MAb reactive on Western blots recognized both the 48- and 60-kDa proteins indicating the presence of common epitopes. Affinity purified Ag elicited immobilizing antisera when injected into rabbits, mice, and channel catfish.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1111/j.1550-7408.1992.tb04832.x

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