Yu Nam Chol (pictured), PhD, associate professor and researcher at Kim Chaek University of Technology, is a member of the organizing committee and Technical Committee member of the International Conference on Materials Science. He is also a member of the International Society of Chemical Engineering of the International Association of Engineers and an honorary member of the London Journal Publisher Association of the UK.
He has presented or contributed dozens of papers at international conferences and to international science journals and reviewed papers for the conferences.
He published six SCI-class papers last year and another one in January this year.
Of them two papers attract particular interest of the academic circle.
The first paper proved that nano-ceramic materials, which can be used as an ideal NTC thermistor, can be successfully prepared by a cheap sol-gel auto combustion and the second one presents numerical data with which to design an optimized multilayer NTC thermistor by way of simulation using a finite element analysing method.
“Nano-ceramic materials prepared by sol-gel auto combustion will lower the production cost by a fourth of that by the existing method and if they are annealed for 72 hours at 550℃ in N2 atmosphere, their aging will be reduced by over 0.3 percent as compared to before. And many researchers have undertaken research projects to design optimized multilayer NTC thermistors. I applied the simulation method based on finite element analyzing method which is used for designing optimal battery to the designing of multilayer NTC thermistors and confirmed correct and satisfactory numerical values,” said Yu.
The research results are expected to be of high practical value as the NTC thermistor and multilayer NTC thermistor are widely used.
More From Pyongyang Times
Maria Zakharova, a spokeswoman for the Russian Ministry of Foreign Affairs, recently dubbed the Western mass media patronizing the
December 01, 2025
Maria Zakharova, a spokeswoman for the Russian Ministry of Foreign Affairs, recently dubbed the Western mass media patronizing the
New houses have been built at the Ryokpho Vegetable Farm in Ryokpho District and the Oryu Vegetable Farm in Sadong District in
December 01, 2025
New houses have been built at the Ryokpho Vegetable Farm in Ryokpho District and the Oryu Vegetable Farm in Sadong District in
The Chinese permanent representative to the United Nations called for a permanent ceasefire in the Gaza Strip in a speech at an
December 01, 2025
The Chinese permanent representative to the United Nations called for a permanent ceasefire in the Gaza Strip in a speech at an
The Saesol Farm in Munchon City and the Roun Farm in Chonnae County of Kangwon Province have undergone big changes beyond
December 01, 2025
The Saesol Farm in Munchon City and the Roun Farm in Chonnae County of Kangwon Province have undergone big changes beyond
The Pyongyang Schoolchildren's Footwear Factory was built and the Pyongyang School Uniform Factory was renovated to hold
December 01, 2025
The Pyongyang Schoolchildren's Footwear Factory was built and the Pyongyang School Uniform Factory was renovated to hold
The Sunchon Building-materials Factory has been upgraded. The completion of a large-capacity building-materials production base
December 01, 2025
The Sunchon Building-materials Factory has been upgraded. The completion of a large-capacity building-materials production base
The Iranian Foreign Ministry issued a statement on November 24 to denounce Israel's air raid on Lebanon. The statement condemned
November 30, 2025
The Iranian Foreign Ministry issued a statement on November 24 to denounce Israel's air raid on Lebanon. The statement condemned
The construction of surface structures of Tanchon Port has been successfully completed. An inauguration ceremony of the port
November 30, 2025
The construction of surface structures of Tanchon Port has been successfully completed. An inauguration ceremony of the port
A symposium in the field of social sciences took place on November 27 to deeply grasp the immortal exploits performed by the
November 29, 2025
A symposium in the field of social sciences took place on November 27 to deeply grasp the immortal exploits performed by the
November 29 is World Day of Solidarity with the Palestinian People. The 32nd Session of the UN General Assembly in 1977 decided to
November 29, 2025
November 29 is World Day of Solidarity with the Palestinian People. The 32nd Session of the UN General Assembly in 1977 decided to
A spokesman for the Iranian Foreign Ministry condemned the US’ military threat against Venezuela.The US is widely advertising that
November 29, 2025
A spokesman for the Iranian Foreign Ministry condemned the US’ military threat against Venezuela.The US is widely advertising that
A friendly match between the national women’s football teams of the DPRK and Russia took place at Kim Il Sung Stadium in Pyongyang
November 29, 2025
A friendly match between the national women’s football teams of the DPRK and Russia took place at Kim Il Sung Stadium in Pyongyang
The agricultural workers in Kumbu-ri of Sakju County and Tanghu-ri of Phihyon County in North Phyongan Province have become the
November 29, 2025
The agricultural workers in Kumbu-ri of Sakju County and Tanghu-ri of Phihyon County in North Phyongan Province have become the
Under the wise leadership of the Workers’ Party of Korea, modern tree nurseries rose up in different parts of the DPRK, the
November 29, 2025
Under the wise leadership of the Workers’ Party of Korea, modern tree nurseries rose up in different parts of the DPRK, the
Recently, the UN Office for the Coordination of Humanitarian Affairs published an estimate, which said that more than one million
November 28, 2025
Recently, the UN Office for the Coordination of Humanitarian Affairs published an estimate, which said that more than one million
The World Meteorological Organization recently announced that the concentrations of carbon dioxide, methane and other greenhouse
November 28, 2025
The World Meteorological Organization recently announced that the concentrations of carbon dioxide, methane and other greenhouse
The U-17 men's ice hockey team of Primorsky Krai of Russia on a visit to Pyongyang at the invitation of the Ministry of Physical
November 28, 2025
The U-17 men's ice hockey team of Primorsky Krai of Russia on a visit to Pyongyang at the invitation of the Ministry of Physical
Proud entities of rural rejuvenation have sprung up one after another in North Hamgyong Province under the care of the Workers'
November 28, 2025
Proud entities of rural rejuvenation have sprung up one after another in North Hamgyong Province under the care of the Workers'
Many people come to enjoy themselves at the Chongnyu People’s Open-air Ice Rink on the banks of the Taedong River in Pyongyang.
November 28, 2025
Many people come to enjoy themselves at the Chongnyu People’s Open-air Ice Rink on the banks of the Taedong River in Pyongyang.
By giving priority to scientific research Choe Jin A, lecturer at the Chemistry Faculty of Kim Il Sung University, developed and
November 28, 2025
By giving priority to scientific research Choe Jin A, lecturer at the Chemistry Faculty of Kim Il Sung University, developed and
More Articles
