scholarly journals Mathematical modeling of the nonstationary sugar mass crystallization process in the vacuum machine heating tube wall layer

2019 ◽  
Author(s):  
Taras Pohorilyi ◽  
Valerii Myronchuk
Keyword(s):  
Mathematical Modeling ◽  
Crystallization Process ◽  
Tube Wall ◽  
Wall Layer ◽  
Mass Crystallization

Fine structure of sporangiole development in Choanephora cucurbitarum (Mucorales)

1982 ◽  
Vol 60 (11) ◽  
pp. 2313-2324 ◽  
Author(s):  
Michael T. Higham ◽  
Kathleen M. Cole
Keyword(s):  
Electron Microscopy ◽  
Germ Tube ◽  
Tube Wall ◽  
Outer Wall ◽  
Spore Wall ◽  
Wall Layer ◽  
Choanephora Cucurbitarum ◽  
Dark Staining ◽  
Granular Vesicles ◽  
Scanning Electron

Spore development was studied in Choanephora cucurbitarum by using transmission and scanning electron microscopy. Sporangioles are produced by expansion of the ampulla wall. A two-layered spore wall is then constructed within the spine-covered sporangiole wall. The outer spore wall layer is longitudinally grooved and is devoid of spines or appendages. The inner wall layer is thinner and electron transparent. During wall production, dark-staining granular vesicles were observed in the spore cytoplasm. Their contents stained similarly to the material of the outer wall layer. Mature spores possessed a third, innermost wall layer. This was identified as a new wall layer, which was continuous with the germ-tube wall of germinated spores. Released spores were observed to be contained within the sporangiole during dispersal and germination.

Mathematical Modeling for Adipic Acid Crystallization Process

2004 ◽  
Vol 37 (9) ◽  
pp. 481-486
Author(s):  
Caliane B.B. Costa ◽  
Aline C. Costa ◽  
Rubens Maciel Filho
Keyword(s):  
Mathematical Modeling ◽  
Adipic Acid ◽  
Crystallization Process

Ultrastructural studies on germinating ascospores of Daldinia concentrica

1976 ◽  
Vol 54 (8) ◽  
pp. 698-705 ◽  
Author(s):  
A. Beckett
Keyword(s):  
Electron Microscope ◽  
Germ Tube ◽  
Tube Wall ◽  
Spore Wall ◽  
Wall Layer ◽  
Ultrastructural Studies ◽  
Early Stages ◽  
Ascospore Germination ◽  
Daldinia Concentrica

Ascospore germination in Daldinia concentrica has been studied using light and electron microscope techniques. Preliminary observations indicated that lipid globules were utilized during early stages of germination. Apical wall vesicles were localized during germ tube initiation and were involved in the differentiation of a filamentous germ tube. Wall synthesis occurred during germination and resulted in a new wall layer, which was different in ultratexture to the spore wall and which formed the germ tube wall. Possible implications of the concept of spore wall and vegetative wall types during germination are discussed.

scholarly journals Heat exchange in steam generator with low-boiling point fluid

2021 ◽  
pp. 204-204
Author(s):  
Sergey Alekseenko ◽  
Lev Ogurechnikov
Keyword(s):  
Mathematical Modeling ◽  
Heat Exchange ◽  
Steam Generator ◽  
Boiling Point ◽  
Tube Wall ◽  
Nucleate Boiling ◽  
Working Fluid ◽  
Phase Flow ◽  
Two Phase ◽  
Transfer Processes

The heat transfer processes in the main zones of the steam generator of low-temperature power plant are considered. An experimentally substantiated method of taking into account the tube wall effect during nucleate boiling in case of a two-phase flow of case of a working fluid inside the tube is implemented by mathematical modeling. The heat exchange characteristics are presented for each of the zones of steam generator with low-boiling point fluid R245fa.

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