scholarly journals Pyro and Kinetic Studies of Barium Oxalate Crystals Grown in Agar Gel

2012 ◽  
Vol 02 (04) ◽  
pp. 156-160 ◽  
Author(s):  
Paresh V. Dalal ◽  
Kishor B. Saraf ◽  
Navinchandra G. Shimpi ◽  
Navneet R. Shah
Keyword(s):  
Kinetic Studies ◽  
Agar Gel ◽  
Barium Oxalate ◽  
Oxalate Crystals

Growth of barium oxalate crystals in agar-agar gel and their characterization

2009 ◽  
Vol 44 (1) ◽  
pp. 36-42 ◽  
Author(s):  
P. V. Dalal ◽  
K. B. Saraf ◽  
S. Shah
Keyword(s):  
Agar Gel ◽  
Barium Oxalate ◽  
Oxalate Crystals

scholarly journals Thermal Conductivity of Gel-Grown Barium Oxalate at 326 and 335 K

2013 ◽  
Vol 2013 ◽  
pp. 1-4
Author(s):  
Paresh Vasantlal Dalal
Keyword(s):  
Thermal Conductivity ◽  
Ambient Temperature ◽  
Single Crystals ◽  
Free Path ◽  
Grown Crystal ◽  
Mean Free Path ◽  
Monoclinic Structure ◽  
Agar Gel ◽  
Gel Method ◽  
Barium Oxalate

Single crystals of barium oxalate have been grown by gel method using agar-agar gel as media of growth at ambient temperature. The grown crystal crystallizes under monoclinic structure. Thermal conductivity of gel-grown barium oxalate crystals as a function of temperature has been studied at 326 and 335 K by using divided bar method. The thermal conductivity of barium oxalate crystal at 326 K was found 3.685 W m−1 K−1 and 3.133 W m−1 K−1 at 335 K. The reduction of thermal conductivity with the rise in temperature may be due to reduction in mean free path of phonons in the solid.

Growth of strontium oxalate crystals in agar–agar gel

2011 ◽  
Vol 34 (2) ◽  
pp. 377-382 ◽  
Author(s):  
P V DALAL ◽  
K B SARAF
Keyword(s):  
Agar Gel ◽  
Oxalate Crystals

scholarly journals Growth and study of barium oxalate single crystals in agar gel

2006 ◽  
Vol 29 (5) ◽  
pp. 421-425 ◽  
Author(s):  
P. V. Dalal ◽  
K. B. Saraf
Keyword(s):  
Single Crystals ◽  
Agar Gel ◽  
Barium Oxalate

scholarly journals Morphological and FTIR Studies of Barium Oxalate Single Crystals

2017 ◽  
Vol 25 (2) ◽  
pp. 195-207
Author(s):  
M. R. Shedam ◽  
Rakesh M. Shedam ◽  
Shridhar N. Mathad
Keyword(s):  
Single Crystals ◽  
Feed Solution ◽  
Silica Gels ◽  
Effect Of Temperature ◽  
Nucleation Density ◽  
Gel Growth ◽  
Ftir Studies ◽  
Barium Oxalate ◽  
Oxalate Crystals ◽  
Higher Temperature

Abstract The conditions for the gel growth of barium oxalate single crystals in silica gels were studied in this paper. We describe the growth mechanism, effect concentration of feed solution, interchanging of the reactants, the effect of temperature and detailed study of microstructures of barium oxalate single crystals. At higher concentration of feed solution dense fibers were observed. With interchanged feed solution precipitate and spherulites have been obtained. The effect of temperature on growth barium oxalate crystals showed that there was a decrease in nucleation density at higher temperature. The crystals growth were observed under the electron microscope which revealed that the crystal have needle and spherulites structures. We also report the FTIR studies of barium oxalate crystals.

An SEM study of raphide crystal initials in the leaves of vitis (grape)

1995 ◽  
Vol 53 ◽  
pp. 984-985
Author(s):  
H. J. Arnott ◽  
M. A. Webb ◽  
L. E. Lopez
Keyword(s):  
Calcium Oxalate ◽  
Water Soluble ◽  
Calcium Oxalate Crystals ◽  
Calcium Oxalate Crystal ◽  
Oxalate Crystals ◽  
Large Numbers ◽  
Sem Study ◽  
The Matrix ◽  
Crystal Cells ◽  
Crystal Idioblast

Many papers have been published on the structure of calcium oxalate crystals in plants, however, few deal with the early development of crystals. Large numbers of idioblastic calcium oxalate crystal cells are found in the leaves of Vitis mustangensis, V. labrusca and V. vulpina. A crystal idioblast, or raphide cell, will produce 150-300 needle-like calcium oxalate crystals within a central vacuole. Each raphide crystal is autonomous, having been produced in a separate membrane-defined crystal chamber; the idioblast''s crystal complement is collectively embedded in a water soluble glycoprotein matrix which fills the vacuole. The crystals are twins, each having a pointed and a bidentate end (Fig 1); when mature they are about 0.5-1.2 μn in diameter and 30-70 μm in length. Crystal bundles, i.e., crystals and their matrix, can be isolated from leaves using 100% ETOH. If the bundles are treated with H2O the matrix surrounding the crystals rapidly disperses.

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