scholarly journals The Changes of PP Crystal Orientation in the Polypropylene/Polyamide 6 Blend Fiber by Annealing.

1995 ◽  
Vol 51 (7) ◽  
pp. 303-312
Author(s):  
Tetsuya Takahashi ◽  
Atsuo Konda ◽  
Yoshio Shimizu
Keyword(s):  
Crystal Orientation ◽  
Polyamide 6 ◽  
Blend Fiber

Abrasion Properties of Polypropylene/Polyamide 6 Blend Fiber

2006 ◽  
Vol 52 (3) ◽  
pp. 99-106 ◽  
Author(s):  
Tetsuya TAKAHASHI ◽  
Atsuo KONDA ◽  
Tatsuyuki YAMAMOTO
Keyword(s):  
Polyamide 6 ◽  
Blend Fiber

scholarly journals Effective of Viscosity Ratio on Structure of Polypropylene/Polyamide 6 Blend Fiber.

1996 ◽  
Vol 52 (10) ◽  
pp. 507-515 ◽  
Author(s):  
Tetsuya Takahashi ◽  
Atsuo Konda ◽  
Yoshio Shimizu
Keyword(s):  
Viscosity Ratio ◽  
Polyamide 6 ◽  
Blend Fiber

Spherulitic crystal growth in the prodissoconch larval of Crassostrea virginica

1983 ◽  
Vol 41 ◽  
pp. 518-519
Author(s):  
George G. Cocks ◽  
Louis Leibovitz ◽  
DoSuk D. Lee
Keyword(s):  
Crystal Structure ◽  
Crassostrea Virginica ◽  
Crystal Orientation ◽  
Developmental Changes ◽  
Gastrula Stage ◽  
Orthorhombic Crystal ◽  
Orthorhombic Crystal Structure ◽  
Stages Of Growth ◽  
Early Stages ◽  
Initial Deposition

Our understanding of the structure and the formation of inorganic minerals in the bivalve shells has been considerably advanced by the use of electron microscope. However, very little is known about the ultrastructure of valves in the larval stage of the oysters. The present study examines the developmental changes which occur between the time of conception to the early stages of Dissoconch in the Crassostrea virginica(Gmelin), focusing on the initial deposition of inorganic crystals by the oysters.The spawning was induced by elevating the temperature of the seawater where the adult oysters were conditioned. The eggs and sperm were collected separately, then immediately mixed for the fertilizations to occur. Fertilized animals were kept in the incubator where various stages of development were stopped and observed. The detailed analysis of the early stages of growth showed that CaCO3 crystals(aragonite), with orthorhombic crystal structure, are deposited as early as gastrula stage(Figuresla-b). The next stage in development, the prodissoconch, revealed that the crystal orientation is in the form of spherulites.

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