KINETICS OF SILICON-LIMITED GROWTH IN THE MARINE DIATOM THALASSIOSIRA PSEUDONANA HASLE AND HEIMDAL (=CYCLOTELLA NANA HUSTEDT)1,2

1973 ◽  
Vol 9 (3) ◽  
pp. 233-237 ◽  
Author(s):  
Robert R. L. Guillard ◽  
Peter Kilham ◽  
Togwell A. Jackson
Keyword(s):  
Thalassiosira Pseudonana ◽  
Marine Diatom ◽  
Limited Growth ◽  
Kinetics Of

scholarly journals KINETICS OF SILICIC ACID UPTAKE AND RATES OF SILICA DISSOLUTION IN THE MARINE DIATOM THALASSIOSIRA PSEUDONANA 1, 2

1976 ◽  
Vol 12 (2) ◽  
pp. 246-252 ◽  
Author(s):  
David M. Nelson ◽  
John J. Goering ◽  
Susan S. Kilham ◽  
Robert R. L. Guillard
Keyword(s):  
Silicic Acid ◽  
Thalassiosira Pseudonana ◽  
Marine Diatom ◽  
Acid Uptake ◽  
Silica Dissolution ◽  
Kinetics Of

The Formation of Cu3Si from Cu/a-Si Multilayers

1997 ◽  
Vol 481 ◽  
Author(s):  
R. R. Chromik ◽  
W. K. Neils ◽  
E. J. Cotts
Keyword(s):  
Diffusion Couples ◽  
X Ray Diffraction ◽  
Limited Growth ◽  
Scanning Calorimetry ◽  
Individual Layer ◽  
Diffusion Limited ◽  
Reaction Constant ◽  
Multilayered Composites ◽  
Reaction Constants ◽  
Kinetics Of

ABSTRACTThe kinetics of the formation of Cu3Si in Cu/a-Si diffusion couples have been investigated by means of differential scanning calorimetry and x-ray diffraction. Multilayered composites of average stoichiometry Cu3Si were prepared by sputter deposition with individual layer thicknesses varying in different samples between 2 and 100 nm. We observed diffusion limited growth of Cu3 Si upon annealing these diffusion couples below 500 K. Reaction constants were measured for a temperature range of 455 to 495 K for thicknesses of growing Cu3Si between 2.6 and 80 nm. The temperature dependence of the reaction constant, k2, was characterized as k2 = k0 exp(− Ea/kbT) with activation energy, Ea = 1.0 eV/atom and pre-factor, k0 = 1.9×10−3 cm2/s.

scholarly journals Distinct genome‐wide alternative polyadenylation during the response to silicon availability in the marine diatom Thalassiosira pseudonana

2019 ◽  
Vol 99 (1) ◽  
pp. 67-80 ◽  
Author(s):  
Haihui Fu ◽  
Peng Wang ◽  
Xiaohui Wu ◽  
Xiaoxuan Zhou ◽  
Guoli Ji ◽  
...  
Keyword(s):  
Alternative Polyadenylation ◽  
Thalassiosira Pseudonana ◽  
Marine Diatom ◽  
Genome Wide

scholarly journals Direct observation of crystallization and melting with colloids

2019 ◽  
Vol 116 (4) ◽  
pp. 1180-1184 ◽  
Author(s):  
Hyerim Hwang ◽  
David A. Weitz ◽  
Frans Spaepen
Keyword(s):  
Energy Difference ◽  
Face Centered Cubic ◽  
Limited Growth ◽  
Free Energy Difference ◽  
Precise Control ◽  
Early Computer ◽  
Face Centered ◽  
Jump Frequencies ◽  
Kinetics Of ◽  
Kinetics Of Crystal Growth

We study the kinetics of crystal growth and melting of two types of colloidal crystals: body-centered cubic (BCC) crystals and face-centered cubic (FCC) crystals. A dielectrophoretic “electric bottle” confines colloids, enabling precise control of the motion of the interface. We track the particle motion, and by introducing a structural order parameter, we measure the jump frequencies of particles to and from the crystal and determine from these the free-energy difference between the phases and the interface mobility. We find that the interface is rough in both BCC and FCC cases. Moreover, the jump frequencies correspond to those expected from the random walk of the particles, which translates to collision-limited growth in metallic systems. The mobility of the BCC interface is greater than that of the FCC interface. In addition, contrary to the prediction of some early computer simulations, we show that there is no significant asymmetry between the mobilities for crystallization and melting.

Citrate as a possible iron-pooling substance in the marine diatom Thalassiosira pseudonana

2016 ◽  
Vol 163 (6) ◽  
Author(s):  
Yuki Imura ◽  
Keiko Sasai ◽  
Shin-ya Inui ◽  
Etsuro Yoshimura
Keyword(s):  
Thalassiosira Pseudonana ◽  
Marine Diatom
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