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Brilliant LeaderShip

Instilling Patriotism from Childhood

Once, the respected Comrade Kim Jong Un gave field guidance to the newly-built Mindulle Notebook Factory. He said that providing our children and school children with high-quality notebooks is of great significance in ...

Everybody Should Learn

One year the respected Comrade Kim Jong Un visited the sci-tech learning space of Sinpho Deep Sea Fishing Complex. Looking round the interior of the learning space, he stressed that the development of ...

Newly-built Emergency Ward

One day in November 2015, the respected Comrade Kim Jong Un visited the remodeled Mangyongdae Schoolchildren’s Palace. He was always wearing a smile while going round the palace that was transformed more splendidly ...

Sincerity is Main Factor

One year, the respected Comrade Kim Jong Un visited a sanatorium. The sanatorium, which had been known as the only sand hot spring in our country for hundreds of years, was frequented by ...

Priority to People’s Convenience

One year the respected Comrade Kim Jong Un inspected the beautiful streets of Pyongyang including Changjon Street and Ryomyong Street several times at night. The streets of the capital city that sprang up ...

Expressing Gratitude for Sincerity

One day in September 2012, the respected Comrade Kim Jong Un visited a fitness center which was nearing completion. Going round the different places of the center, guided by the officials, he stopped ...

News

Jo Apr 6, 2026

The rapid development of modern industry requires products with good mechanical properties and light weight and thus, the application of Al and its alloys attracts a great deal of attention. Inclusions and gas in molten aluminum decrease its fluidity and make its structure rough to decrease the castability and serve as the source of crack. Also, they decrease the workability and surface finish, and especially it is unfavorable to the toughness and fatigue strength. Therefore, there have been many researches to remove these inclusions and gas.

A researcher prepared KCl-NaCl-NaF-Na2AlF6 system refining agent and estimated the refining efficiency by measuring the density of aluminum to determine the effective composition of KCl-NaCl-NaF-Na2AlF6 system. Some components of KCl-NaCl-NaF-Na2AlF6 generate gas for removing gas, but their main refining action is the absorption of oxide inclusions. In other words, the hydrogen removal effect is not so high. Therefore, it is necessary to select and use an additive to increase the amount of generated gas for improving the hydrogen removal effect.

Ri Hyok, a researcher at the Faculty of Metallic Engineering, selected an additive to improve the refining efficiency of NaCl-KCl-Na2SiF6-NaF system-compound refining agent for gas impurities in molten aluminum for continuous casting, and determined its amount.

Based on the relationship between the partial pressure and the chemical potential of refining gas and those of the hydrogen in molten aluminum, he induced a formula for determining the amount of additives. He conducted a metallic microscope analysis of newly-refined aluminum to confirm the refining efficiency.

He found that the amount of NaNO3 which was selected as an additive is 0.2% of that of refined aluminum and at that time the amount of carbon is 0.1%.

You can find his paper “Improvement of the Refining Effect of NaCl-KCl-Na2AlF6-NaF System-Refining Agent for Gas by Adding NaNO3” in “Proceedings of KUTIC-2025”.

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Jo Apr 5, 2026

Peasant dance is a folk dance that peasants in our country have danced to merry farm music from long ago. It is an optimistic and delightful popular dance of strong national coloring.

It is distinguished by its vigorous, spirited and colorful costume.

Dancers wore red jackets with yellow, white and black cuffs on the sleeves, and waistbands up to the chest tied at the back and hung down silk streamers in various colors on the back (three pieces each) in a good assortment.

At the time of dancing, especially dashing or rotating, the streamers blow and spread out in the wind to form beautiful shapes.

Peasant dance has distinguishing features in its movements and skills. Since it was a dance and a game of men, the dance movements were bold and turning round decorative tassels was focused on skills.

Turning round decorative tassels (pheasant feather or long thin strips of white paper tied to the top of soldier’s felt hat) like a windmill is peculiar to the peasant dance.

Turning round decorative tassels has tens of movements regarded as major dance movements, which are called sangmojit.

The decorative tassels as long as over 6 meters turning round on the dance field to form various shapes highlights the stunning spectacle of this folk art.

Under the wise guidance of the Workers’ Party of Korea, peasant dance is still being inherited for further development to meet the modern tastes.

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“Aggregated Blood Cells Separating Lamina” cleaning the blood

The scientists and researchers of Kim Chaek University of Technology developed a simple medical instrument using “Aggregated blood cells separating lamina” which radiates far infrared rays capable good health by cleaning the human blood.

Nov 15, 2024