Jo Sep 1, 2021
Jong Kwang Hyok, the head of Laboratory at Faculty of Applied Chemical Engineering and his research group succeeded in producing non-toxic low-cost nano micellar functional material that can be used as starch derivative for drug delivery, high purity refiner of the object material and environmental improvement material with our own raw material.
This functional polymer based on starch guarantees 15~80℃ of thermal response range, ±0.1℃ of response accuracy, 1~10.4 of pH response range, and 50~90mg/L of micelle critical concentration range.
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Jo Aug 20, 2021
Choe Yong Myong, student in the 5th grade at Faculty of Applied Mathematics, Kim Chaek University of Technology, has been a member of the family of the special class disabled soldier couple for nearly 20 years since the day of his first visit with his parents on January 1, 2003 when he was 3 years old.
What was imprinted on the pupils of the young boy’s eyes was his father and mother, who kept running about in sweat to help the disabled soldier who was always on the bed. Today the student is following this road.
In his childhood he spent more days with the cheerful passionate disabled soldier rather than with his grandmother, who took every possible care of him. Sometimes he had to get punished before the strict “uncle” when he failed to do his homework because of himself much absorbed in play. However he was always at his side.
When he went to university after the middle school, he paid more and more attention to the disabled soldier.
The ideological and moral world of the disabled soldier, who took treatment strenuously with strong will withstanding the unbearable pain for 24 years in bed and who was even more passionate than any of his colleagues was inscribed as the mirror which the student reflected himself in.
It seems to be the reason why his heart towards the soldier got warmer and warmer as the days went by.
He did devote himself to the soldier from the childhood when he put various kinds of healthy food prepared by his mother into the soldier’s mouth, and the middle school days when he read a book at the bedside, to the university days when he gave the soldier his favourite computer, taught him how to type on the keyboard and to use application software, and translated a number of foreign books and magazines needed for his treatment.
Choe Yong Myong and his parents found the word “one family” not in the lines from a book but on their own skin and flesh.
Therefore special class disabled soldier Hong Kum Chol and his wife Ju Kum Hwa expressed their feelings in the letter to KUT as follows:
“The Workers’ Party of Korea, our socialist country training a huge army of such reliable youths is the best in the world!”
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Jo Aug 18, 2021
Kim Jin Hyok, student at Faculty of Physics presented a paper “Joint Estimation of Self-mixing Interferometry Parameters and Displacement Reconstruction Based on Local Normalization” to SCI Journal “Applied Optics”.
During the research he found out that normalization methods used in processing self-mixing signals proved to be irrational in practical application because of the limitation in coverage and measurement accuracy due to the changes in some information of signals.
Therefore, he proposed a local normalization that enables high-speed accurate measurement of major constants of sensors by reducing the number of sample points, and a simple algorithm with which displacement information of the object can be accurately determined on the basis of it.
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Jo Aug 16, 2021
Researcher Hong Myong Son at Faculty of Materials Science and Technology and his research group succeeded in producing non-magnetic hard alloy which contains no cobalt with domestically available raw materials. This kind of alloy is used as the basic material of molding tools and is urgently needed in the various sectors of the national economy.
The hardness of this alloy is more than HRA 91, the bending strength more than 1.8GPa and the saturation magnetization strength less than 3Gs.
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Jo Aug 9, 2021
Pak Se Yang, a researcher at Science Engineering Institute, reported a paper “Data-driven Robust Controller Design by Geometric Constraints in Frequency-Domain” in SCI magazine "International Journal of Dynamics and Control".
In the paper, he found that the representation of the performance factor of the Robust controller with geometric limit in frequency domain has a drawback of disagreement between the control ability and design characteristics due to the strict assumption and large error, and proposed a new method to enhance the control ability by improving geometric limit.
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Jo Aug 4, 2021
The research team led by Kim Ryul, a researcher at the Faculty of Electrical Engineering, has developed metallic oxide lightning arrester for high voltage based on the domestic resources, thus contributing to the regular operation of electric equipment.
The non-interval metallic oxide lightning arrester is made by sintering the mixture of zinc oxide and other oxides such as arsenic oxide, aluminium oxide at over 1 150℃. The voltage degree of nonlinear resistance of the metallic oxide lightning arrester is over 318V/mm.
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