보리후작 벼 부분경운직파의 생육특성 및 수량

김상열,박성태,신상욱,이명철 한국국제농업개발학회 2004 韓國國際農業開發學會誌 Vol.16 No.4

보리후작 벼 부분경운직파기의 포장성능 평가와 벼 생육 및 수량영향을 조사하기 위해 실시한 연구결과는 다음과 같다. 1.부분경운직파 시작기의 파종시 종자 떨어짐 및 복토상태는 양호하나 배수골 넓이 및 깊이가 각각 17㎝, 10㎝로 좁고 배수골 양쪽벽이 무너져 배수골 안에 흙이 쌓이는 경향이었다. 2. 출아일수는 부분경운직파는 12일로 요철골직파보다 2일 늦었고, 입모수 및 파종 25일후 초장 변이계수는 부분경운직파가 요철골직파보다 큰 경향이었다. 3. 출수기는 부분경운직파는 8월 26일로 요철골직파보다 3일 늦었으나, ㎡당 수수, 수량구성요소 및 10a당 쌀수량은 요철골직파 및 부분경운직파에서 비슷하였다. 4.부분경운직파는 요철골직파에 비해 줄기매몰심이 깊고 도복지수가 낮아 요철골직파보다 도복이 적었다. Performance of minimum-tillage direct seeder and effect of the minimum-tillage direct seeding method on growth and yield of rice under barley-rice double cropping system was investigated. Seeding status of the minimum-tillage direct seeder was acceptable except for narrow irrigation canal formation and demolish of the seeding row in the barley straw added plot. In the minimum-tillage direct seeding, rice seedling emerged at 13 days after seed sowing, 2 days late compared with the corrugated dry furrow seeding method. The high variation in the seedling stand and seedling height at 25 days after seeding was occurred in the minimum-tillage direct seeding as compared with that of the corrugated dry furrow seeding. However, occurrence of the field lodging in the minimum-tillage direct seeding was lower than the corrugated dry furrow seeding method due to deep culm burial depth. Based on the milled rice yield, the two direct seeding methods showed similar with 432 ㎏ per 10a.

동기유발을 위한 ARCS이론을 적용한 수업이 수학과 문제해결력 신장에 미치는 영향

성열욱,김상운 한국학교수학회 2001 韓國學校數學會論文集 Vol.4 No.2

All men's achievement and behavior is always based on motivation. It has been reported that learning motivation plays an important role to get achievement of study to approximately 16∼38%. Therefore, a lot of researchers agree that learning motivation must be required for learning achievement. This study focuses on "How behavior induces learning motivation from learners?" I adapted "the Attention, Relevance, Confidence, Satisfaction" which is supported by John. M. Keller in the model of ARCS to the course of teaching-learning in order to improve them systematically. The effectiveness and results of adaptation must be considered to solve the math problems.

벼 시설재배 후작 재배시 모 종류별 생육특성 및 수량성

신상욱,박성태,김상열 한국국제농업개발학회 2003 韓國國際農業開發學會誌 Vol.15 No.4

소득작물 및 시설재배 후작 벼 안전재배를 위한 묘 종류별 생육특성 및 수량성에 관한 연구결과를 요약하면 다음과 같다. 1. 이앙당시 엽수는 중묘대비 성묘는 1.2배가 많았다. 2. 묘의 발근력은 어린모>중묘>절엽묘 순으로 좋았다. 3. 분답 초기생육 기간동안에 초장은 중묘가 가장 길었으며 엽수는 성묘가 높은 엽령을 유지하였다. ㎡당 분열수는 성묘가 가장 적으면서 조기에 경수를 확보하였으며 건물중은 분얼이 적었던 성묘가 가벼웠다. 4. 출수기는 중묘대비 성묘가 3일 빨랐고 어린모는 8일이 늦었다. 5. 간장은 73~80㎝묘령이 클수록 짧았고 ㎡당 수수는 어린모와 성묘가 많았으며 등숙비율은 묘령이 클수록 높았다. 6. 10a당 쌀수량은 ‘99년에서 ’01년까지 평균수량은 422~441㎏으로 통계적 유의차는 없엇으나 성묘>중묘>어린모순으로 많았다. 7. 미질은 현미의 품위를 보면 완전미 비율이 성묘에서 높았고 백미품위도 성묘에서 높았는데 단백질 및 아밀로즈함량은 묘종류별로 차이가 없었다. This experiment was conducted to investigate the rice seedling types suitable for safty cultivation after economic crops cultivation in paddy field. In rice seedling transplanted on July 5 heading date is three days earlier in 40-day old seedling with cutting 1/2 leaf on 20 days than 30-day old seedling. Also, 40-day old seedling has highest for ripening ratio among seedling types, which lead to high yield. Milled rice yield per 10a is the highest, but not signigicant. Perfect kernel ratio of brown rice is the highest in 40-day old seedling although amylose and protein contents in milled rice are similar to other seedlings types

벼 기계이앙재배시 실비생략에 따른 생육 및 미질영향

신상욱,황정동,박성태,김상열 한국국제농업개발학회 2004 韓國國際農業開發學會誌 Vol.16 No.2

최근 개발된 수진벼의 중묘의 기계이앙재배시 실비생략에 따른 수량 및 미질에 영향에 관한 연구결과를 요약하면 다음과 같다. 1. 출수기의 건물중의 기관별 분포비율에 있어서는 분시방법간 비슷하여 기관 구조에서는 차이가 없었다 2. 분시발법별 수상에 있어 2차지경 및 영화퇴화율은 수비 30%를 준 기비 50%-분얼비 20%- 수비 30% 및 기비 40%-분얼비 30%-수비 30% 분시구에서 가장 낮았다. 3. 분시방법간에 출수기는 8월 16일로 동일하였고 간장 및 ㎡당 수수가 비슷하였으며 수당립수 및 등숙비율이 차이를 보이지 않아 쌀수량도 502~51 8㎏/10a('00) 및 563~601㎏/10a('01)로 비슷하였다. 4. 2년간 평균 현미의 완전미비율은 72.8~76.2%('00) 및 80.3~83.3%('01)로 차이가 없었고 백미의 정상립 비율은 76.3~79.6%로 비슷하였으며 아밀로즈 및 단백질함량은 각각 18.9~19.2% 및 7.1~7.2%로 비슷하였다. This experiment was conducted to evaluate a proper nitrogen spilling method in machine transplanting, especially in no fertilizing effect at grain filling stage of rice. The results obtained are as follow; Rice growth characters such as heading date, culm length and panicle number per ㎡ did not differ with nitrogen application methods either basal (50% )-tillering stage (30%)-panicle initiation stage (20%) or the basal (40%)- tillering stage (30%)-panicle initiation stage (30%) compared with the recommended nitrogen application method, basal (50%)-tillering stage (20%)-panicle initiation stage (20%)-heading stage (10%). Also, perfect kernel ratio and milled rice yield per 10a as well as rice quality were similar among nitrogen spliting treatments. The result indicates that the nitrogen fertilization at the ripening stage is not necessary.

흰쥐 삼차신경 척수감각핵의 미측소핵 세포의 전압의존성 소디움통로와 포타슘통로에 대한 전기생리학적 연구

천상우,최정희,김권수,유용묵,김종구,이동근 대한악안면성형재건외과학회 2002 Maxillofacial Plastic Reconstructive Surgery Vol.24 No.1

The caudal subnucleus of the spinal trigeminal nucleus (medullary dorsal horn ; MDH) receives direct inputs from unmyelinated and thinly myelinated, small diameter primary afferent fibers. Thus, the MDH is implicated in the processing of nociceptive information in the orofacial region. In this study, the types and characteristics of voltage-dependent ion currents were investigated in acutely isolated MDH neurons of postnatal rats by means of the whole cell patch clamp techniques. Coronal slice (400㎛) of the trigeminal caudal subnucleus region was sequentially treated with pronase 0.2㎎/㎖. then single neurons were mechanically dissociated. Voltage-dependent sodium currents showed that the half-maximum activation potential was -41.8±1.8mV and half-maximum inactivation potential was -62.4±3.0mV. And the currents were blocked totally by application of 100nM tetrodotoxin. In a Ca^2+ free solution, low-threshold transient (I_A) and high-threshold sustained (I_K) currents were recorded. The half-maximum activation and inactivation potential of I_K were 2.5±1.9mV and -37.1±2.3mV, respectively. I_A was activated and inactivated more rapidly than I_K. The half-maximum activation and inactivation potential were -21.6±6.3mV and -84.5±5.0mV, respectively. When a 4-aminopyridine of 5mM was applied, I_A was almost totally blocked. These results reveal that MDH neurons express a variety of voltage-dependent ionic currents with distinct physiological and pharmacological properties, and they play an essential role in the transmission and modulation of sensation, especially pain, from trigeminal region.

급성 구강감염부위에서 Staphylococcus lugunensis 의 특성

유용욱,이미성,차정단,김기경,신상희,문상은,김강주 원광대학교 생명공학연구소 1999 생명공학연구소보 Vol.6 No.1

Staphylococcus lugdunensis (S. lugdunensis) is a newly identified pathogenic species of coagulase negative staphylococci and an occasional but not rare cause of severe infections, such as infective endocarditis after dental extraction, bacteremia, osteomyelitis, peritonitis, and soft tissue infections. As antibiotic use increased, resistance rapidly developed. Some strains have plasmids related to antibiotic resistance. To characterize S. lugdunensis in acute oral infection, S. lugdunensis was isolated from the patients with acute oral abscess, osteomyelitis, and normal persons. Antibiotic resistance, in vitro cellular toxicity, in vivo virulence, δ-like hemolysin activity, and synergistic hemolysis on sheep blood agar plates were investigated. The dot blot analysis and Southern blot analysis of staphylococcal DNA was performed with δ-hemolysin gene probe of Staphylococcus aureus. (S. aureus) Staphylococcal DNA was cloned, nucleotide sequence was analysed, and homology was compared with other sequence in Gene Bank. S. aureus, S. lugdunensis, Staphylococcus cohnii (S. cohnii), and other coagulase negative staphylococci (CNS) were isolated from the patients with acute oral infection. The isolation ratio of S. lugdunensis in the patients with infection was higher than that of healthy persons, but the isolation ratio of S. aureus in the patients with infection was similar to that of healthy persons. S. lugdunensis from the patients with acute oral infection showed the resistance to penicillin, methicillin, cephalothin, and clindamycin. S. lugdunensis in the patients had cellular toxicity in vitro and virulence in vivo. All strains of S. lugdunensis had δ-like hemolysin activity against rabbit erythrocytes. Four of the six strains of S. lugdunensis gave synergistic hemolysis with S. aureus on sheep blood agar plates. In dot blot analysis, all strains of S. lugdunensis showed the positive reaction with the probe of δ-hemolysin gene in S. aureus, but a 7.3 kb HindⅢ fragment was observed in the DNA of S. lugdunensis that gave synergistic hemolysis in a Southern blot analysis. The molecular size of partially purified δ-hemolysin was about 50 kd. The cloned fragments from the chromosomal DNA of S. lugdunensis showed the partial homology with the insulin receptor-related and dopamine receptor of humans. These results suggest that S. lugdunensis might be an important pathogen in acute oral infection and show some homology with eukaryotes.

Resilient High Catalytic Performance of Platinum Nanocatalysts with Porous Graphene Envelope

Kim, Heeyeon,Robertson, Alex W.,Kim, Sang Ouk,Kim, Jong Min,Warner, Jamie H. American Chemical Society 2015 ACS NANO Vol.9 No.6

<P>Despite the innumerable developments of nanosized and well dispersed noble metal catalysts, the degradation of metal nanoparticle catalysts has proven to be a significant obstacle for the commercialization of the hydrogen fuel cell. Here, the formation of Pt nanoparticle catalysts with a porous graphene envelope has been achieved using a single step low temperature vaporization process. While these Pt–Gr core–shell nanoparticles possess superior resilience to degradation, it comes at the cost of degraded overall catalyst efficacy. However, it is possible to combat this lower overall performance through inclusion of low concentrations of nitrogen precursor in the initial stage of single-step synthesis, inhibiting the formation of complete graphene shells, as verified by atomic resolution aberration-corrected transmission electron microscopy (AC-TEM) imaging. The resultant porous graphene encapsulated Pt catalysts are found to have both the high peak performance of the bare Pt nanoparticle catalysts and the increased resilience of the fully shielded Pt–Gr core–shells, with the optimal N-doped Pt–Gr yielding a peak efficiency of 87% compared to bare Pt, and maintaining 90% of its catalytic activity after extended potential cycling. The nitrogen treated Pt–Gr core–shells thus act as an effective substitute catalyst for conventional bare Pt nanoparticles, maintaining their catalytic performance over prolonged use.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/ancac3/2015/ancac3.2015.9.issue-6/acsnano.5b00678/production/images/medium/nn-2015-00678j_0009.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/nn5b00678'>ACS Electronic Supporting Info</A></P>

Decursin prevents TPA-induced invasion through suppression of PKCα/p38/NF-κB-dependent MMP-9 expression in MCF-7 human breast carcinoma cells

KIM, JEONG-MI,NOH, EUN-MI,KIM, MI-SEONG,HWANG, JIN-KI,HWANG, HONG-YEON,RYU, DO-GON,KIM, HYE-JUNG,YU, HONG-NU,YOU, YONG-OUK,KIM, JONG-SUK,YOUN, HYUN JO,KWON, KANG-BEOM,JUNG, SUNG HOO,LEE, YOUNG-RAE Spandidos Publications 2014 International journal of oncology Vol.44 No.5

Anomalous Rapid Defect Annihilation in Self-Assembled Nanopatterns by Defect Melting

Kim, Bong Hoon,Park, So Jung,Jin, Hyeong Min,Kim, Ju Young,Son, Seung-Woo,Kim, Myung-Hyun,Koo, Chong Min,Shin, Jonghwa,Kim, Jaeup U.,Kim, Sang Ouk American Chemical Society 2015 NANO LETTERS Vol.15 No.2

<P>Molecular self-assembly commonly suffers from dense structural defect formation. Spontaneous defect annihilation in block copolymer (BCP) self-assembly is particularly retarded due to significant energy barrier for polymer chain diffusion and structural reorganization. Here we present localized defect melting induced by blending short neutral random copolymer chain as an unusual method to promote the defect annihilation in BCP self-assembled nanopatterns. Chemically neutral short random copolymer chains blended with BCPs are specifically localized and induce local disordered states at structural defect sites in the self-assembled nanopatterns. Such localized “defect melting” relieves the energy penalty for polymer diffusion and morphology reorganization such that spontaneous defect annihilation by mutual coupling is anomalously accelerated upon thermal annealing. Interestingly, neutral random copolymer chain blending also causes morphology-healing self-assembly behavior that can generate large-area highly ordered 10 nm scale nanopattern even upon poorly defined defective prepatterns. Underlying mechanisms of the unusual experimental findings are thoroughly investigated by three-dimensional self-consistent field theory calculation.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/nalefd/2015/nalefd.2015.15.issue-2/nl5042935/production/images/medium/nl-2014-042935_0006.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/nl5042935'>ACS Electronic Supporting Info</A></P>

Self-Assembled Nanostructures: Role of Water in Directing Diphenylalanine Assembly into Nanotubes and Nanowires (Adv. Mater. 5/2010)

Kim, Jangbae,Han, Tae Hee,Kim, Yong-Il,Park, Ji Sun,Choi, Jungkweon,Churchill, David G.,Kim, Sang Ouk,Ihee, Hyotcherl WILEY-VCH Verlag 2010 Advanced Materials Vol.22 No.5

<B>Graphic Abstract</B> <P>The controllable assembly behavior of diphenylalanine molecules to form nanowires (NWs) and nanotubes (NTs) and their structural details are presented. Hyotcherl Ihee, Sang Ouk Kim and co-workers show on p. 583 that the nanoscale morphologies are closely related to molecular arrangements of diphenylalanine as revealed by Rietveld refinement of powder X-ray diffraction patterns and electron-density distributions in NTs and NWs via the maximum entropy method analysis. <img src='wiley_img/09359648-2010-22-5-ADMA201090007-content.gif' alt='wiley_img/09359648-2010-22-5-ADMA201090007-content'> </P>