scholarly journals Growth of the (001) face of borax crystals

2010 ◽  
Vol 5 (2) ◽  
pp. 98-100
Author(s):  
Suharso Suharso
Keyword(s):  
Aqueous Solutions ◽  
Optical Microscopy ◽  
Growth Mechanism ◽  
Growth Rates ◽  
Spiral Growth ◽  
Microscopy Method

he growth rates of borax crystals from aqueous solutions in the (001) direction at various relative supersaturations were measured using in situ cell optical microscopy method. The result shows that the growth mechanism of the (001) face of borax crystal at temperature of 20 °C is spiral growth mechanism.   Keywords: Growth mechanism, borax.

Highly Purified Glucose Isomerase Crystals Under Microgravity Conditions Grow as Fast as Those on the Ground Do

2020 ◽  
Author(s):  
Yoshihisa Suzuki
Keyword(s):  
Growth Rates ◽  
Glucose Isomerase ◽  
Spiral Growth ◽  
Protein Crystals ◽  
In Situ Observation ◽  
Lateral Growth ◽  
Impurity Incorporation ◽  
Microgravity Conditions

<p>Suppression of convection flows (solute transportation) and that of impurity incorporation into crystals seem to be the main reasons why the quality of protein crystals becomes better under microgravity conditions, whereas each precise mechanism has not been completely clarified yet. We tried to clarify the former reason by the in-situ observation of spiral growth hillocks on the {110} faces of highly purified glucose isomerase (GI) crystals under microgravity conditions and on the ground. Lateral growth rates <i>V</i><sub>lateral</sub> of a spiral hillock on the {110} face of a glucose isomerase crystal in situ under microgravity conditions and step velocities <i>V</i><sub>step</sub> of the same configuration on the ground took similar values as far as the maximum values are compared each other. This similarity indicates there are less influences of the convection flows on the growth rates of protein crystals contrary to conventional expectations.</p>

scholarly journals EFFECT OF SODIUM DODECYLBENZENESULFONIC ACID (SDBS) ON THE GROWTH RATE AND MORPHOLOGY OF BORAX CRYSTAL

2010 ◽  
Vol 7 (1) ◽  
pp. 5-9 ◽  
Author(s):  
Suharso Suharso
Keyword(s):  
Growth Rate ◽  
Optical Microscopy ◽  
Dodecylbenzenesulfonic Acid ◽  
Microscopy Method

An investigation of the effect of sodium dodecylbenzenesulfonic acid (SDBS) on both growth rate and morphology of borax crystal has been carried out.  This experiment was carried out at temperature of 25 °C and relative supersaturation of 0.21 and 0.74 under in situ cell optical microscopy method.  The result shows that SDBS inhibits the growth rate and changes the morphology of borax crystal.   Keywords: Borax; growth rate; crystallization, SDBS

Highly Purified Glucose Isomerase Crystals Under Microgravity Conditions Grow as Fast as Those on the Ground Do

2020 ◽  
Author(s):  
Yoshihisa Suzuki
Keyword(s):  
Growth Rates ◽  
Glucose Isomerase ◽  
Spiral Growth ◽  
Protein Crystals ◽  
In Situ Observation ◽  
Lateral Growth ◽  
Impurity Incorporation ◽  
Microgravity Conditions

<p>Suppression of convection flows (solute transportation) and that of impurity incorporation into crystals seem to be the main reasons why the quality of protein crystals becomes better under microgravity conditions, whereas each precise mechanism has not been completely clarified yet. We tried to clarify the former reason by the in-situ observation of spiral growth hillocks on the {110} faces of highly purified glucose isomerase (GI) crystals under microgravity conditions and on the ground. Lateral growth rates <i>V</i><sub>lateral</sub> of a spiral hillock on the {110} face of a glucose isomerase crystal in situ under microgravity conditions and step velocities <i>V</i><sub>step</sub> of the same configuration on the ground took similar values as far as the maximum values are compared each other. This similarity indicates there are less influences of the convection flows on the growth rates of protein crystals contrary to conventional expectations.</p>

scholarly journals Direct TEM observation of the “acanthite α-Ag2S–argentite β-Ag2S” phase transition in a silver sulfide nanoparticle

2019 ◽  
Vol 1 (4) ◽  
pp. 1581-1588 ◽  
Author(s):  
S. I. Sadovnikov ◽  
E. Yu. Gerasimov
Keyword(s):  
Electron Microscopy ◽  
Phase Transition ◽  
Transmission Electron Microscopy ◽  
Silver Sulfide ◽  
Transmission Electron ◽  
Silver Sulfide Nanoparticles ◽  
Microscopy Method ◽  
Electron Microscopy Method ◽  
First Time

For the first time, the α-Ag2S (acanthite)–β-Ag2S (argentite) phase transition in a single silver sulfide nanoparticles has been observed in situ using a high-resolution transmission electron microscopy method in real time.

Fabrication of monodisperse polypyrrole/SBA-15 composite for the selective removal of Cr(Ⅵ) from aqueous solutions

2021 ◽  
Author(s):  
Liang Wang ◽  
Peng Gao ◽  
Mengxin Liu ◽  
Ziqing Huang ◽  
Shixia Lan ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Adsorption Process ◽  
In Situ Polymerization ◽  
Selective Removal ◽  
Factors Affecting

Monodisperse polypyrrole/SBA-15 composite (PPy/SBA-15) was fabricated by in-situ polymerization and used for Cr(Ⅵ) adsorption from aqueous solution. PPy/SBA-15 was characterized by numerous approaches. Factors affecting the Cr(Ⅵ) adsorption process included...

Electronic Structures of Crystalline and Aqueous Solutions of LiBr, NaBr, KBr, and KBrO3:  In Situ Br L-Edge Near-edge X-ray Absorption Fine Structure

2003 ◽  
Vol 107 (46) ◽  
pp. 12562-12565 ◽  
Author(s):  
Shuji Matsuo ◽  
Ponnusamy Nachimuthu ◽  
Dennis W. Lindle ◽  
Hisanobu Wakita ◽  
Rupert C. C. Perera
Keyword(s):  
Fine Structure ◽  
Aqueous Solutions ◽  
Electronic Structures ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Absorption
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