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Aging estimation of reactor pressure vessel in the field using magnetic properties
Baek, Un Bong,Ryu, Kwon Sang,Kim, Amkee,Nahm, Seung Hoon Elsevier 2009 Journal of loss prevention in the process industri Vol.22 No.6
<P><B>Abstract</B></P><P>Many researchers have been interested in the nondestructive measurement methods for estimating components damage in order to assure the safe service of steel structures. It is recognized that the evaluating techniques based on magnetic measurement can offer a great potential because of high susceptibility to the change of several metallurgical factors. Magnetic property such as coercive force was measured. The coercive force at room temperature monotonously increased with the increase of frequency. The correlation between the magnetic properties of used material and that of un-used material was studied. The coercive force gradient at room temperature increased with the increase of aging. Hence the estimating method using magnetic properties allows one to evaluate the extent of material aging for reactor pressure vessel.</P>
김상운 ( Sang-un Kim ),정현종 ( Hyun-jong Jung ) 대한한의진단학회 2015 大韓韓醫診斷學會誌 Vol.19 No.1
Objectives This study intends to present the writing of standardized medical records based on Korean medicine on the basis of Geum-gwe-yo-ryak symptoms. Methods 1. Excluding the sentences unrelated to the Geum-gwe-yo-ryak symptoms, the symptoms in the rest of sentences were extracted. 2. Classifying the extracted symptoms as per the review of system, the similar symptoms were integrated. 3. Calculating the frequencies of each symptom, each strain rate was calculated. 4. The above results were compared with the results of existing similar study on Sang-han-ron(『傷寒論』) symptoms Results Conclusion 1. Resulting from the analysis on all sentences in Geum-gwe-yo-ryak, a total of 1486 different symptoms were extracted. 2. As results out of total, the symptom related to the temperature sensation accounted for 12.4%, that related to sweat did 3.8%, that related to thirst did 3.8%, that related to edema did 3.4%, that related to musculoskeletal system did 6.9%, that related to breathing did 8.6%, that related to chest and hypochondrium did 6.2%, that related to abdomen did 9.5%, that related to digestive system did 9.6%, that related to stool did 6.4%, that related to urination and urinary system did 5.7%, that related to mouth, eye, ear, nose, throat did 5.3%, that related to skin did 4.5%, that related to language, mind, sleep and emotion did 6.7%. 3. Compared with Sang-han-ron, Edema appear only in Geum-gwe-yo-ryak. Therefore, edema may be a characteristic symptoms of miscellaneous disease.
이기환,구광호,이상용,이규용,유언호,김종숙 ( Ki Whan Lee,Kwang Hoo Koo,Sang Yong Lee,Kyu Yong Lee,Un Ho Ryoo,Chong Sook Kim ) 대한소화기학회 1974 대한소화기학회지 Vol.6 No.1
The measurements of sium amylase and urine amylase for 2-1 and 2 hrs were caried ou normal perso,-s, 118 pat;:enls vith disardei s in the upp r alimentary tract, 184 patie.,ts v, ith h;le- cystopathy and 26 patients ivith acute pancreatitis. The follosving rc.su1ts were drawn: In the normal prsons, the average determination of serum amylas was 5-l. I L 21, 9. Units ' 100 m]. It shov;ed no difference by sex and age. 2 The frequezcy manifesting raise of serum amylase (the value higher than mean+2S.I),,, v,as 5 ] y in the patients with the upper G.I. Disorders, an<l 6, l,jj in the patients of chiIccys'.:>p.ithy v, ith normal features in cholecys.ograms. It, however, showed 2S. 7, of frequeny appeaiing nis:.. of serv,m an.ylase in the patients of cholecystopathy with abnorrnalities in roentgenographic exa!ii- ;iations indicating a mean value of 86. 4 31. 67 units,'l0(l ml. 3, The determination of s rum amylase in the pat,ents of acute pancreatitis was 12a. ] un!ts,'100 ml on the initial day, and it showed ahrupt diminution thereafter. 4. Each dete:mination of urine amylase for 24 and 2 hnurs was 1394. 3 .867. 43 and 15 4 -(j;, Hi units in the normal pers1ns, but there was no significant shift in the group of the uppr:.;- G,I disorders, and a little raise in the group of cholecystopathy. In the group of acute panc:eatili:., ii showed marked rais of urine amylas, ,6562, 9---4526, 3<J units for 24 hours on the se ond cia o!' ailment), revealins: subs quent gradual cle rease, (30i;>. 9 l 1927. 92 units on the sexth day',. It must b emphasized that in picture of urine amylase should be a great help for c!iagnos!.ng tli. Conditions.
차량 충돌 방지용 24㎓ 레이더 주파수대의 근거리 전파손실특성
하덕호(Deock-Ho Ha),류지열(Jee-Youl Ryu),김성운(Sung-Un Kim),최연욱(Yeon-Wook Choi) 한국정보기술학회 2011 한국정보기술학회논문지 Vol.9 No.8
In this paper, we describe the short range propagation loss characteristic of 24㎓ frequency band used for automotive collision avoidance radar (ACAR). To investigate the radio propagation characteristic of ACAR signals, we used 24㎓ UMCW (Un-Modulated Continuous Wave) signals using by several polarized antenna combinations. To detect the accurate message data for safety guiding ACAR, we analyze and investigate the optimum receiving condition from the short range UMCW signal of the 24㎓ frequency. From the measurement analysis, it can be clearly seen that the short range UMCW signal can be encountered to multipath interference due to scattering rays from the ground plane and adjacent moving obstacles. In addition, it was also found that the received signal strength of circularly co-polarized antenna shows the most strong envelopes and best fading reduction effect.
Large-scale screening of rice accessions to evaluate resistance to bakanae disease
Kim, Myung-Hee,Hur, Yeon-Jae,Lee, Saes Beul,Kwon, Tackmin,Hwang, Un-Ha,Park, Soo-Kwon,Yoon, Young-Nam,Lee, Jong-Hee,Cho, Jun-Hyeon,Shin, Dongjin,Kim, Tae Heon,Han, Sang-Ik,Yeo, Un-Sang,Song, You-Chun Springer-Verlag 2014 Journal of general plant pathology Vol.80 No.5
Effect of Barley and Hairy Vetch as Green Manures on Soil Nitrogen and Corn Productivity
Sung Un Kim,Eun Sang Jung,Hyun Ho Lee,Jang Seong Ho,Chang Oh Hong 한국토양비료학회 2018 한국토양비료학회지 Vol.51 No.4
The utilization of green manures as alternatives to reduce the use of chemical fertilizers is considered a good agricultural practice. So far, many studies on determining effect of incorporation of green manure to paddy soil on change of rice productivity have been conducted in South Korea. However, there have been few studies on examining soil nitrogen (N) and corn productivity in upland soil incorporated with green manure. The objective of this study was to determine effect of single or mixture incorporation of green manures (hairy vetch and barley) to an upland soil on changes of inorganic N in soil and grain yield of corn plant. Single barley (B), single hairy vetch (HV), and mixture of barley and hairy vetch (B+HV) were sown on 2<SUP>nd</SUP> November in 2013 and incorporated to an upland soil on 12<SUP>th</SUP> May in 2014. Corn plant was sown on 12<SUP>th</SUP> May in 2014 and harvested on 25<SUP>th</SUP> August in 2014. Above ground, below ground, and total biomass yields of HV were significantly lower than those of B and B+HV. Even though N concentration in HV was the highest among the treatments, total N input amounts to the soil were not significantly different among the treatments due to the lowest biomass yield of HV. Also, there was no significant difference among the treatments in NH₄<SUP>+</SUP> and NO₃<SUP>-</SUP> concentration in soil at corn harvest time. For those reason, there was no significant difference among the treatments in grain yield and N uptake of corn plant at harvest time. Based on the above results, single or mixture of B and HV did not affect changes of soil inorganic N and corn productivity in upland soil.
Molecular cloning and analysis of the <i>Thermus caldophilus</i> ADP-glucose pyrophosphorylase
Kim, Yong-Sam,Sohn, Hosung,Jin, Un-Ho,Suh, Seok-Jong,Lee, Sang Chul,Jeon, Jae Heung,Lee, Dae-Sil,Kim, Cheorl-Ho,Ko, Jeong Heon IPC Science and Technology Press 2007 Enzyme and microbial technology Vol.41 No.4
<P><B>Abstract</B></P><P>Previously, we have purified a highly thermostable ADP-glucose pyrophosphorylase (EC 2.7.7.27; AGPase) from <I>Thermus caldophilus</I> GK-24. In the present paper, we further report the molecular cloning and characterization of the thermostable bacterial AGPase. Using a 0.6-kb DNA probe obtained by polymerase chain reaction (PCR) with a primer set deduced from the <I>N</I>-terminal and internal amino acid sequence, the AGPase gene was cloned. The cloned AGPase gene had a 1245-bp open reading frame that encodes a protein of 414 amino acids. Then, the full-length AGPase gene was further cloned into the pHCE19T(II) vector and was expressed in <I>Escherichia coli</I> DH5α. Western analysis of the recombinant enzyme showed the same immunity as the wild-type enzyme with a molecular mass of ca. 46kDa by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. The kinetic parameters of the recombinant AGPase were basically similar to the wild type. The <I>N</I>-terminal region of <I>T. caldophilus</I> AGPase showed a partial similarity to that of <I>E. coli,</I> and R336 and P295 were identical to those of <I>E. coli</I> AGPase. In addition, sequence comparison revealed that R177 and P235 of <I>T. caldophilus</I> AGPase were aligned with K195 and K247 of <I>E. coli,</I> and K376 with R386, while K195 residue of <I>E. coli</I> was reported to be located in the glucose-1-phosphate (Glc-1-P) substrate binding region.</P>
Cytotoxic Alkaloids from Houttuynia cordata
Kim, Seong-Kie,Ryu, Shi-Yong,No, Jae-Sung,Choi, Sang-Un,Kim, Young-Sup The Pharmaceutical Society of Korea 2001 Archives of Pharmacal Research Vol.24 No.6
Six bioactive alkaloids, aristolactam B(1), poperolactam A(2), aristolactam A(3), norcepharadione B(4), cepharadione B(5) and splendidine(6) were isolated by bioactivity-guided fractionalton of a methanolic extract of the aerial part of Houttuynia cordata. Several of them exhibited significant cytotoxicity against five human tumor cell lines (A-549,SK-OV-3,SK-MEL-2, XF-498 and HCT-15) in vitro.