ANALYSIS OF HYDRODYNAMICS IN THE SYNTHESIS OF CRYSTALS FROM WATER-SALT SOLUTIONS

Mapping Intimacies ◽

10.29003/m2476.mmmsec-2021/78-81 ◽

2021 ◽

Author(s):

Anatoly Prostomolotov ◽

Nataliya Verezub

Keyword(s):

Mathematical Modeling ◽

Crystal Growth ◽

Salt Solution ◽

Defect Formation ◽

Crystal Surface ◽

Axisymmetric Flow ◽

Local Features ◽

Salt Solutions ◽

Kdp Crystal ◽

Water Salt

In application to KDP crystal growth on a functioning crystallizer, the local features of solution hydrodynamics near the growing crystal surface, which may affect on the crystallographic conditions of crystal growth and the defect formation, are established by mathematical modeling. The design of a modernized crystallizer, which provides an axisymmetric flow around of a growing crystal by a water-salt solution, is considered.

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THE EFFECTS OF TANNIC ACID ON THE EFFECTIVENESS OF EGG FERTILIZATION AND REMOVING CARP EGG ADHESIVENESS

Proccedings of International Scientific Conference "RURAL DEVELOPMENT 2017" ◽

10.15544/rd.2017.016 ◽

2018 ◽

Cited By ~ 1

Author(s):

Gražina ŽIBIENĖ ◽

Alvydas ŽIBAS ◽

Laima ŠVIRINIENĖ

Keyword(s):

Acid Solution ◽

Tannic Acid ◽

Salt Solution ◽

Environmental Conditions ◽

Acid Water ◽

Salt Solutions ◽

Solution Treated ◽

Artificial Breeding ◽

Water Salt ◽

Tannic Acid Solution

Egg adhesiveness is one of the major problems in carp artificial breeding. The appropriate elimination of egg adhesiveness impacts the effectiveness of the breeding. This article discusses two used methods of carp egg adhesiveness removal: tannic acid+water and milk+water+salt solutions. Milk, water and salt solution was based on the following proportions: 1 litre of milk + 7 litres of water +50g of NaCl. Adhesiveness is removed from fertilized eggs in bowls by mixing them with geese feathers for no shorter than 60 minutes. The tannic acid solution was prepared by mixing 7 grams of tannic acid powder with 5 litres of water. 1 litre of solution is immediately poured into a bowl with fertilized eggs. Adhesiveness is removed from fertilized eggs in bowls by intensively mixing them for 10 minutes. After fertilization and removal of adhesiveness, the eggs were transferred into Weiss jars. The results showed that during the process of incubation, 3.7 million eggs were fertilized; out of them 1.6 million were rid of adhesiveness by milk solution, 2.1 – by tannic solution. It is plausible that unfavourable environmental conditions influenced the low egg vitality. 750 000 (47%) carp larvae hatched from milk solution treated eggs, while 800 000 (38%) of larvae hatched from the eggs treated with tannic solution.

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HYDRODYNAMICS AND MASS TRANSFER IN SPECIAL CRYSTALLIZER DESIGNS

Mathematical modeling in materials science of electronic component ◽

10.29003/m1524.mmmsec-2020/78-82 ◽

2020 ◽

Author(s):

Anatoliy Prostomolotov ◽

Natalia Verezub

Keyword(s):

Mass Transfer ◽

Crystal Growth ◽

Swirling Flow ◽

Salt Solutions ◽

Solution Flow ◽

Water Salt ◽

Laminar And Turbulent Regimes ◽

Calculation Models

Two variants of the crystallizer are considered: in the first, the solution is supplied to the central crystal part, in the second, there is a peripheral solution supply along the crystallizer perimeter, what provides creating its swirling flow. The calculation models corresponded to the laminar and turbulent regimes of the solution flow during the mixed KCNSH crystal growth from a mixture of two water-salt solutions (cobalt KCSH and nickel KNSH salts).

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