Bucky Ball Chemistry

1991 ◽  
Vol 63 (4) ◽  
pp. 213A-213A
Keyword(s):  
Bucky Ball

COOL IMAGES: Having a Bucky Ball

Science ◽  
2000 ◽  
Vol 287 (5452) ◽  
pp. 387a-387
Keyword(s):  
Bucky Ball

scholarly journals Kinesin-1 interacts with Bucky ball to form germ cells and is required to pattern the zebrafish body axis

Development ◽  
2015 ◽  
Vol 142 (17) ◽  
pp. 2996-3008 ◽  
Author(s):  
P. D. Campbell ◽  
A. E. Heim ◽  
M. Z. Smith ◽  
F. L. Marlow
Keyword(s):  
Germ Cells ◽  
Body Axis ◽  
Bucky Ball

SPECTRAL PROPERTIES OF CONFINED ATOMS

2002 ◽  
Vol 09 (01) ◽  
pp. 39-43 ◽  
Author(s):  
V. K. DOLMATOV ◽  
J. P. CONNERADE ◽  
A. P. LAKSHMI ◽  
S. T. MANSON
Keyword(s):  
Energy Spectrum ◽  
Electron Correlation ◽  
Periodic Table ◽  
Spectral Properties ◽  
Correlation Effects ◽  
Applied Physics ◽  
Electron Correlation Effects ◽  
Bucky Ball

The changes in energy and photoionization spectra of atoms upon confinement by a spherical environment are explored theoretically. Two kinds of confinement are considered: an endohedral confinement, such as inside the bucky-ball C 60, and an impenetrable spherical confinement of adjustable radius. We demonstrate modifications in the energy spectrum and electron correlation effects in confined atoms, the appearance, nature and origin of "confinement" resonances in photoionization spectra of such atoms, as well as new regularities in the periodic table for "compressed" atoms. These findings are of importance for basic and applied physics and chemistry of atoms, molecules, surfaces, etc.

scholarly journals Bucky ball establishes animal-vegetal polarity in the oocyte and in the follicle cell layer in zebrafish

2008 ◽  
Vol 319 (2) ◽  
pp. 464
Author(s):  
Florence L. Marlow ◽  
Franck Bontems ◽  
Roland Dosch ◽  
Mary C. Mullins
Keyword(s):  
Cell Layer ◽  
Follicle Cell ◽  
Bucky Ball

scholarly journals A transgenic system for targeted ablation of reproductive and maternal-effect genes

Development ◽  
2021 ◽  
Vol 148 (12) ◽  
Author(s):  
Sylvain Bertho ◽  
Odelya Kaufman ◽  
KathyAnn Lee ◽  
Adrian Santos-Ledo ◽  
Daniel Dellal ◽  
...  
Keyword(s):  
Embryonic Development ◽  
Maternal Effect ◽  
Early Embryo ◽  
Gene Products ◽  
Reverse Genetic ◽  
Genetic Screens ◽  
Maternal Effect Genes ◽  
Forward Genetic Screens ◽  
Embryonic Life ◽  
Bucky Ball

ABSTRACT Maternally provided gene products regulate the earliest events of embryonic life, including formation of the oocyte that will develop into an egg, and eventually into an embryo. Forward genetic screens have provided invaluable insights into the molecular regulation of embryonic development, including the essential contributions of some genes whose products must be provided to the transcriptionally silent early embryo for normal embryogenesis, called maternal-effect genes. However, other maternal-effect genes are not accessible due to their essential zygotic functions during embryonic development. Identifying these regulators is essential to fill the large gaps in our understanding of the mechanisms and molecular pathways contributing to fertility and to maternally regulated developmental processes. To identify these maternal factors, it is necessary to bypass the earlier requirement for these genes so that their potential later functions can be investigated. Here, we report reverse genetic systems to identify genes with essential roles in zebrafish reproductive and maternal-effect processes. As proof of principle and to assess the efficiency and robustness of mutagenesis, we used these transgenic systems to disrupt two genes with known maternal-effect functions: kif5ba and bucky ball.

Electronic Structure of Carbon Fibers based on C60

1992 ◽  
Vol 247 ◽  
Author(s):  
Riichiro Saito ◽  
Mitsutaka Fujita ◽  
G. Dresselhaus ◽  
M. S. Dresselhaus
Keyword(s):  
Carbon Fibers ◽  
Tight Binding ◽  
Electronic Energy ◽  
Rotational Axis ◽  
Structure Model ◽  
Energy Bands ◽  
Binding Model ◽  
One Dimensional ◽  
Band Structure Model ◽  
Bucky Ball

ABSTRACTThe electronic structures of some possible carbon fibers nucleated from the hemisphere of a bucky ball are presented. A one-dimensional electronic energy band structure model of such carbon fibers, having not only a principal rotational axis but also fibers with screw axes, can be derived by folding the two-dimensional energy bands of graphite. By considering the variation of the fiber diameter and helicity within a simple tight binding model calculation, we show that 1/3 of the fibers are metallic and 2/3 are semiconducting. The effect of adding multiple tubule layers is considered.

SPHERICAL CELLULAR NONLINEAR NETWORKS

2001 ◽  
Vol 11 (01) ◽  
pp. 241-257 ◽  
Author(s):  
TAO YANG ◽  
KENNETH R. CROUNSE ◽  
LEON O. CHUA
Keyword(s):  
Nonlinear Networks ◽  
Simulation Results ◽  
And Behaviors ◽  
Bucky Ball

We present the structures and behaviors of cellular nonlinear networks (CNN) on spheres (spherical CNN for short). Although the cells in a spherical CNN can have any number of neighbors, in this paper we study the cases where each cell has only three neighbors. We present the simulation results of symmetric and asymmetric spherical CNNs. In our simulations, we use a Bucky-ball spherical CNN structure with 60 cells and an irregular spherical CNN structure with 100 cells. Since a spherical CNN has no boundary, we use an asymmetric spherical CNN to show how information propagates on spheres via local couplings. We also show that if a spherical CNN is locally active then different patterns can be found in its stable output.

CORRELATION EFFECTS IN SOLID C60

1992 ◽  
Vol 06 (23n24) ◽  
pp. 3915-3921 ◽  
Author(s):  
R.W. Lof ◽  
M.A. van Veenendaal ◽  
B. Koopmans ◽  
A. Heessels ◽  
H.T. Jonkman ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Hubbard Model ◽  
Long Range ◽  
Coulomb Interaction ◽  
Auger Spectrum ◽  
Correlation Effects ◽  
Highly Correlated ◽  
Molecular Excitons ◽  
Bucky Ball

The bandgap of solid C 60 is found to be 2.3±0.1 eV . The on-site molecular C 60 Coulomb interaction (U) as determined from the KVV C 60 Auger spectrum is found to be 1.6 ±.2 eV . This value of U is shown to be consistent with Frenkel type molecular excitons in the 1.5–2 eV range. These results lead us to suggest that doped C 60 should be considered as a highly correlated system with U/W comparable to that in high T c cuprates. The Auger spectroscpoy results are consistent with a rather long range Coulomb interaction on a single bucky ball indicating that a Hubbard model is not suitable to describe the electronic structure of a C 60 molecule.

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