Researchers of the Pyongyang University of Mechanical Engineering have developed a universal grader for fish farming and introduced it into reality true to the intention of the Workers' Party of Korea on putting the pisciculture on a scientific and intensive basis.
They have made a persistent research with a goal to develop and complete the fish grader of Korean style suited to the trend of the development of fish farming.
Doctor and Associate Professor Choe Kum Su, Deputy Dean of the University, says:
"Generally, grading fishes properly according to their sizes from the period of fry is an important issue to raise the survival rate of fishes and increase their output. Basing ourselves on the detailed analysis and survey of the preceding technical literature, we paid attention to a grading sieve capable of sorting out fishes according to their sizes and pooled our collective wisdom to devise a new type of grading sieve.
We made a number of simulations and structural basic tests, making it possible to optimize the structure and adjust the intervals of the sieve at will. As a result, we devised a structure which can sort out fishes of different sizes, ages and kinds and could make a highly efficient universal grader for fish farming."
The universal grader for fish farming made by them was introduced into a number of breed-fish stations, with the result that they could increase the sorting efficiency to 99.99 percent while saving a lot of manpower and time.
The new-type grader is much less than the previous ones in manufacturing cost, has simple structure and is convenient to use. It was highly estimated at the 35th National Sci-Tech Festival.
More From Voice of Korea (EN)
Players from the Democratic People's Republic of Korea prove successful at the 2025 Asian Weightlifting Championships. On the
May 12, 2025
Players from the Democratic People's Republic of Korea prove successful at the 2025 Asian Weightlifting Championships. On the
The respected Comrade Kim Jong Un, General Secretary of the Workers' Party of Korea, President of the State Affairs of the
May 12, 2025
The respected Comrade Kim Jong Un, General Secretary of the Workers' Party of Korea, President of the State Affairs of the
The respected Comrade Kim Jong Un gave field guidance to Kwail County of South Hwanghae Province one day in September 2017 when
May 12, 2025
The respected Comrade Kim Jong Un gave field guidance to Kwail County of South Hwanghae Province one day in September 2017 when
The Namhung Youth Chemical Complex is working hard for increased production and economy. Workers of the complex produced thousands
May 12, 2025
The Namhung Youth Chemical Complex is working hard for increased production and economy. Workers of the complex produced thousands
The Latin American regional Juche idea seminar on "Independence, Global Peace and Social Justice" was held in Mexico City, the
May 11, 2025
The Latin American regional Juche idea seminar on "Independence, Global Peace and Social Justice" was held in Mexico City, the
Celebrations of the 80th anniversary of victory in the Great Patriotic War were held in Russia. A grand military parade took place
May 11, 2025
Celebrations of the 80th anniversary of victory in the Great Patriotic War were held in Russia. A grand military parade took place
Universities and colleges in all parts of the Democratic People's Republic of Korea are concentrating efforts on increasing the
May 11, 2025
Universities and colleges in all parts of the Democratic People's Republic of Korea are concentrating efforts on increasing the
Kangwon Province is putting spurs to strengthening material and technical foundations of the fishery sector. The provincial
May 11, 2025
Kangwon Province is putting spurs to strengthening material and technical foundations of the fishery sector. The provincial
Pak Myong Jin from the Democratic People's Republic of Korea won gold medals at the 2025 Asian Weightlifting Championships under
May 11, 2025
Pak Myong Jin from the Democratic People's Republic of Korea won gold medals at the 2025 Asian Weightlifting Championships under
The Hwanghae Iron and Steel Complex is directing efforts to the revitalization of production. The complex finished the oxygen
May 11, 2025
The Hwanghae Iron and Steel Complex is directing efforts to the revitalization of production. The complex finished the oxygen
The respected Comrade Kim Jong Un, General Secretary of the Workers' Party of Korea and President of the State Affairs of the
May 10, 2025
The respected Comrade Kim Jong Un, General Secretary of the Workers' Party of Korea and President of the State Affairs of the
The Central Committee of the Workers' Party of Korea, the State Affairs Commission of the Democratic People's Republic of Korea,
May 10, 2025
The Central Committee of the Workers' Party of Korea, the State Affairs Commission of the Democratic People's Republic of Korea,
The respected Comrade Kim Jong Un paid a congratulatory visit to the embassy of the Russian Federation in the Democratic People's
May 10, 2025
The respected Comrade Kim Jong Un paid a congratulatory visit to the embassy of the Russian Federation in the Democratic People's
Meetings and seminars were held at the Maritime Territorial Branch Committee of the Communist Party of the Russian Federation, the
May 10, 2025
Meetings and seminars were held at the Maritime Territorial Branch Committee of the Communist Party of the Russian Federation, the
Staff members of the embassy of the Russian Federation in the Democratic People's Republic of Korea laid a wreath before the
May 10, 2025
Staff members of the embassy of the Russian Federation in the Democratic People's Republic of Korea laid a wreath before the
The schoolchildren's art troupe of the Mangyongdae Schoolchildren's Palace on a visit to the Maritime Territory of Russia gave its
May 10, 2025
The schoolchildren's art troupe of the Mangyongdae Schoolchildren's Palace on a visit to the Maritime Territory of Russia gave its
The Central Committee of the Workers' Party of Korea, the State Affairs Commission of the Democratic People's Republic of Korea,
May 10, 2025
The Central Committee of the Workers' Party of Korea, the State Affairs Commission of the Democratic People's Republic of Korea,
The Tenth National Children's Football Tournament opened on the occasion of the 79th founding anniversary of the Korean Children's
May 10, 2025
The Tenth National Children's Football Tournament opened on the occasion of the 79th founding anniversary of the Korean Children's
In the last century the Japanese imperialists occupied Korea by brigandish means and left no stone unturned to plunder all the
May 10, 2025
In the last century the Japanese imperialists occupied Korea by brigandish means and left no stone unturned to plunder all the
The government delegation of the Republic of Belarus led by Vice-Prime Minister Yuri Shuleiko returned home by air on the 9th
May 10, 2025
The government delegation of the Republic of Belarus led by Vice-Prime Minister Yuri Shuleiko returned home by air on the 9th
More Articles
