[論文] 마이크로 콤퓨터를 이용한 차량용 엔진 제어에 관한 기초 연구

강기문(Ki Moon Kang),전병실(Byoung Sil Chon),황준택(Jun Teak Hwang) 한국자동차공학회 1985 오토저널 Vol.7 No.3

In order to control ignition advance angle,this system is designed with Z-80 CPU, CTC(Counter Timer Circuit), PIO (Parallel Input Output), A/D Converter and Memory, etc.<br/> Serial pulses from speed sensor and analog voltage from pressure sensor are converted to digital data.<br/> In order to reduce the error of ignition advance angle output, the reference of ignition advance angle output is set 56.25 before TDC (Top Dead Center).<br/> The table of ignition advance angle and program which have a main routine and subroutines are writtern into ROM(1K-byte),<br/> The experimental result of this system is correspondent to the theoretical values of proposed ignition advance angle table.<br/> This system can be utilized to any other type of 4 cylinder vehicles for advance angle control by changing software.

[P2-15] β-Carotene and Retinol Contents of Key Foods in the Korean Diet

Hyunmi Lee,Sharmin Farhana,Junsoo Lee,Ki-Teak Lee,Hee Duck Lee,Jun Heo,Sung Ho Jang,Soohyun Ji,Sung Won Yoon,Hani Kang,Jiyeon Chun 한국식품영양과학회 2010 한국식품영양과학회 학술대회발표집 Vol.2010 No.10

가스 크로마토그래피를 이용한 수입농산물 중 국내 미등록 농약의 다성분 동시분석법 적용

이지원(Ji-Won Lee),강정균(Jeong-Kyun Kang),권혜영(Hyeyoung Kwon),노진호(Jin-Ho Ro),진용덕(Yong-Duk Jin),이제봉(Je Bong Lee),홍수명(Su-Myeoung Hong),김택겸(Teak-Kyum Kim),조남준(Nam-Jun Cho) 한국농약과학회 2015 농약과학회지 Vol.19 No.3

The multiresidue method 4.1.2.2 in Korea Food Code was extended for the analysis of 24 unregistered pesticide residues. The method includes acetonitrile extraction, liquid-liquid partition, Florisil SPE clean-up and GC analysis. The limits of quantification (LOQ) range of the method was 0.02~0.05 mg/kg for orange, brown rice and banana. The linearity for targeted pesticides were R<SUP>2</SUP> > 0.99 at the level ranged from 0.05 to 5 mg/L. Recovery test was performed at two concentration levels of LOQ and 4~10 times of LOQ. Recoveries and relative standard deviations (RSDs) of target pesticides were acceptable, showing 70~120% range and less than 20%, respectively, except for ethiprole, picloram and sulcotrion. This method is effectively applicable to routine analysis of target pesticides in orange, brown rice and banana.

Comparison of Bonding Performance for CFRP-SPCC Single Lap Joint Using Adhesives and Rivets

Lee, Ok Hyoung,Lee, Il Teak,Kang, Hee Yong,Yang, Sung Mo,Yim, Jun Young,Kim, Dae Su,Ahn, Hyo Jun Trans Tech Publications, Ltd. 2016 Materials science forum Vol.859 No.-

<P>The recent trend in automotive industry is characterized by the replacement of existing metal materials with composite ones or the combination of both for lightweight parts. This study 1) created single lap joint specimens of SPCC used for automobile frame and four adhesives; epoxy, urethane, acrylic, mixed (urethane and acrylic) and rivets to bind dissimilar materials of CFRP necessary for weight lightening, and 2) performed a tensile shear test on adhesive bonding versus adhesive bonding with rivets. In summary, this study investigated on the bonding performance of different specimens: bonding strength, shapes of the failure surface, and the effect of rivets on bond strength.</P>

돈분액비 시용이 호밀의 생산성 및 토양의 이화학적 특성에 미치는 영향

김문철(Moon-Chul Kim),송중용(Jung-Young Song),황경준(Kyoung-Jun Hwang),송상택(Sang-Teak Song),현철호(Cheol-Ho Hyun),강태현(Tea-Hyun Kang) 한국초지조사료학회 2008 한국초지조사료학회지 Vol.28 No.2

돈분액비의 DM 농도와 분시 차이가 동계사료작물의 생산성 및 토양특성에 미치는 영향을 비교하기 위해 2005년 11월부터 2006년 6월까지 제주특별자치도 축산진흥원 사료작물 포장에서 동계사료작물 호밀을 이용하여 수행되었다. 시험은 주구 2처리(고농도 DM 7.0%, 저농도 DM 1.6% 돈분액비), 세구 2처리(기비 100%, 기비 50%와 추비 50% 시용)를 각 각 4반복 분할구법으로 설계하였다. 고농도 돈분액비 시용이 저농도 액비 보다 호밀의 초장과 건물수량에 통계적으로 유의적 증가를 보였다(P<0.05). 호밀의 조단백질 함량은 액비를 기비만 시용하는 것 보다 분시하므로 증가하였다(P<0.05). 돈분액비 시용으로 호밀의 대량무기물 (P, K, Ca, Mg 및 Na)이나 미량무기물 (Cu, Fe, Mn 및 Zn) 함량에 차이를 주지 않았고 동계사료작물 호밀을 재배했던 토양의 이, 화학적 특성에도 분뇨처리 효과가 없었다. 다만 호밀의 평균 P 함량 0.16%는 화본과 작물 적정수준 0.2~0.4% 보다 부족했고 호밀재배 토양의 pH (5.5), OM(13.3%), 유효인산 (47.6 ㎎/㎏) 및 Ca (2.75) 함량은 농경지 토양 수준 보다 부족하였다. 결론적으로 DM 7.0%의 고농도 액비시용은 DM 1.6%의 저농도 액비 보다 호밀의 생산성 향상을 가져 왔으나 재배 토양의 이, 화학적 특성에 변화를 주지 않았다. The study was conducted to investigate the effects of DM (dry matter) content and split application of liquid swine manure (LSM) on productivity of rye and subsequent soil quality on the pasture of Livestock Policy Division, Jeju Special Self-Governing Province. The experiment was done between November, 2005 and June 2006, using split plot design. Treatments were 2 main plots (7.0 and 1.6% DM LSM) and 2 subplots (basal fertilizer 100% and basal fertilizer 50% + top dressing 50%). Application of 7.0% DM LSM resulted in significant increase in DM yield and plant length of rye compared with 1.6% DM LSM (p<0.05). Crude protein content of rye was significantly higher in split application(basal fertilizer 50%+ top dressing 50%) than in basal fertilizer 100% (p<0.05). No significant difference in macro and micro mineral contents of rye or in subsequent soil quality was found by application of LSM. Mean P content (0.16%) of rye appeared to be lower than proper P level (0.2~0.4%) of grass crop. The pH (5.5), OM (13.3%), available P₂O? (47.6 ㎎/㎏) and Ca (2.75 cmole/㎏) content of the pasture soil studied were lower, compared with those of cultivated soil. Results show that the application of a 7.5% DM liquid swine manure increases the productivity of rye compared with a 1.6% DM liquid swine manure, meanwhile the property of pasture soil was not influenced by application of LSM.

호박꽃과실파리 성충의 수명과 생명표분석

전성욱,강택준,조명래,김광호,이상계,김지수,박해웅,Jeon, Sung-Wook,Kang, Teak-Jun,Cho, Myoung-Rae,Kim, Kwang-Ho,Lee, Sang Guei,Kim, Ji Soo,Park, Hae Woong 한국응용곤충학회 2012 한국응용곤충학회지 Vol.51 No.4

호박꽃과실파리(Bactrocera scutellata Hendel)의 성충 수명과 산란수를 7개 온도(15, 18, 21, 24, 27, 30, $33{\pm}1.0^{\circ}C$, RH $65{\pm}5%$, 14L : 10D)에서 조사하여 생명표를 작성하였다. 온도별 성충수명은 $21^{\circ}C$에서 수컷이 138.0일 암컷이 131.2일로 가장 오래 살았으며, $21^{\circ}C$를 기준으로 저온부와 고온부로 갈수록 수명이 급격히 감소하였다. 온도별 암컷은 $18^{\circ}C$이하의 온도에서 산란을 하지 않았으며, $33^{\circ}C$에서는 짝짓기가 가능한 시기까지 살지 못하고 모두 사망하였다. 짝짓기한 암컷의 총 산란수는 111.4개, 일일 산란수는 1.0개로 $24^{\circ}C$에서 가장 많은 산란수를 보였고 순증가율($R_o$)은 $21^{\circ}C$에서 52.27로 가장 높은 수치를 나타냈다. 내적자연증가율($r_m$)은 $27^{\circ}C$에서 0.07을 보였으며, 배수기간(${\lambda}$)은 $27^{\circ}C$에서 10.02로 가장 짧았다. 기간증가율($D_t$)은 $27^{\circ}C$에서 1.07로 가장 큰 값을 보였고, 평균세대기간(T)은 $27^{\circ}C$에서 50.39였다. The life table of the Striped Fruit Fly, Bactrocera scutellata, was analyzed by using adult longevity and fecundity of B. scutellata at seven constant temperatures (15, 18, 21, 24, 27, 30, $33{\pm}1.0^{\circ}C$) with 65% RH and 16L:8D in the laboratory. The highest values of longevity were observed at $21^{\circ}C$ with the values of 138.0 days for male and 131.2 days for female, respectively. Females of B. scutellata did not oviposit under $18^{\circ}C$ and larvae of B. scutellata could not survive to adulthood over $33^{\circ}C$. The highest value of total fecundity was observed at $24^{\circ}C$ (111.4 eggs) and daily fecundity per female was observed at approximately 1.0. The parameters of the life table were calculated by using the data from eggs to adults of B. scutellata at 4 different temperatures. Net reproduction rate ($R_o$) was highest at $21^{\circ}C$ (52.27). The intrinsic rate of increase ($r_m$) and the finite rate of increase per day (${\lambda}$) were highest at $27^{\circ}C$ (0.07 and 1.07), respectively. The doubling time ($D_t$) was shortest at $27^{\circ}C$ (with 10.02). The mean generation time (T) was shortest at $27^{\circ}C$(50.39).

Impact of Multiple Prostate Biopsies: Risk of Perioperative Complications and Biochemical Recurrence After Radical Prostatectomy

Kyong Min Park(박경민),Jae-Wook Chung(정재욱),Jun-Koo Kang(강준구),Teak Jun Shin(신택준),Se Yun Kwon(권세윤),Hyun Chan Jang(장현찬),Yun-Sok Ha(하윤석),Seock Hwan Choi(최석환),Wonho Jung(정원호),Jun Nyung Lee(이준녕),Byung Hoon Kim 대한비뇨기종양학회 2020 대한비뇨기종양학회지 Vol.18 No.1

Purpose: The aim of this study was to analyze the perioperative complications and oncological outcomes of radical prostatectomy (RP) in patients who underwent multiple prostate biopsies. Materials and Methods: A total of 1,112 patients who underwent RP between January 2009 and April 2016 at 4 different centers were included in this study. We divided these patients into 2 groups: patients who underwent only 1st biopsy, and those who underwent 2nd or more repeated biopsies. The association between the number of prior biopsies and perioperative complications and biochemical recurrence (BCR) was analyzed. Results: Of 1,112 patients, 1,046 patients (94.1%) underwent only 1st biopsy, and 66 (5.9%) underwent 2nd or more repeated biopsies. There were no significant differences in preoperative prostate-specific antigen levels, operation times, blood loss volumes, or hospital stay durations (all p>0.05). Patients who underwent multiple prostate biopsies presented with a localized tumor significantly more often (p<0.05). The Gleason score and rate of positive surgical margins were significantly lower in patients with multiple biopsies (all p<0.05). The Cox proportional hazards model analysis indicated that there was no association between the number of prior prostate biopsies and BCR (p>0.05). Kaplan-Meier curve analysis indicated that BCR-free survival rates between the 2 groups were similar (p>0.05). Conclusions: Multiple prostate biopsies are not associated with an increased risk of perioperative complications, adverse pathological outcomes, or higher rates of BCR in patients who have undergone RP.

High-throughput Screening and Selection of Artificial Lactam Riboswitch

Junyeong SUNG,Sungyeon JANG,Sungho JANG,Dae-Kyun IM,Teak jun KANG,Min-Kyu OH,Gyoo Yeol JUNG 한국생물공학회 2021 한국생물공학회 학술대회 Vol.2021 No.10

Caprolactam is a monomer used for the synthesis of nylon-6. An intracellular biosensor for caprolactam can facilitate high-throughput metabolic engineering of recombinant microbial strains. Because of the mixed production of caprolactam and valerolactam in the recombinant strain, a caprolactam biosensor should be highly specific for caprolactam. However, a highly specific caprolactam sensor has not been reported. Here, we developed an artificial riboswitch that specifically responds to caprolactam. This riboswitch was prepared using a coupled in vitro-in vivo selection strategy with a heterogeneous pool of RNA aptamers obtained from in vitro selection to construct a riboswitch library used in in vivo selection. The caprolactam riboswitch successfully discriminated caprolactam from valerolactam. This riboswitch enabled caprolactam-dependent control of cell growth, which will be useful for improving caprolactam production and is a valuable tool for metabolic engineering.