요소엽면살포(尿素葉面撒布)에 따른 수도(水稻)의 질소영양에 관한 연구

조성진 한국농화학회 1968 Applied Biological Chemistry (Appl Biol Chem) Vol.9 No.1

This experiment was carried out as a part of the studies on reasonable application of nitrogen in rice plant to determine: (Ⅰ) Nitrogen absorption. and rooting of rice seedlings as affected by urea foliar application at late seedling stage (Ⅱ) Effect of leaf prunning and foliar application of urea at late heading stage on the maturation and yield of rice (Ⅲ) Effect of foliar application of urea and its time during the stage of ear formation on yield of rice plant. Results obtained are summarized as follows. Exp.I: Nitrogen absorption and rooting of rice seedlings as affected be urea foliar application at late seedling stage. 1 : The foliar application of urea plots(T₁,T₂) snowed mare N-content than non-urea foliar application plot(T0) at lane seedling stage, being significant among treatments and foliar application of urea seemed more effective in increasing the N-content of seedlings. and promoted root settlement and early growth alter the transplanting. 2 : The carbon contents of the plants of T₁, and T₂ at late seedling stage increased than T_0, and the carbon contents. of T₁ and T₂ plots became higher in amount in proportion to the nitrogen absorption as compared with those of T0. 3 : C/N ratio appeared significant among soil application plots(N₁, N₂) and foliar application of urea plots (T₁, T₂ and T_0). C/N ratio was lower in case of increased amount of nitrogen. The higher contents of nitrogen and carbon and lower C/N ratio resulted in the increment of root numbers and root lengths. Exp.II: Effect of leaf prunning and foliar application of urea at late heading stage on the maturation and yield of rice. 1 : There was a highly significant decrease in the maturing rate by severe leaf prunning. In the mean time, significant increase in maturing rate was observed with urea foliar application and it was found the more frequent application the more effective for higher maturing rate with a moderate significance. A correlationship between the level of prunning and maturing rate was enumerated to 0.961 of correlation coefficient, which indicated an increased maturing rate by the increased number of remaining leaves. 2 : The 1.000 grain weight, grain weight and hulled rice yield increased by leaf prunning in order (plot a$lt;b$lt;c$lt;d$lt;e) at the plots where upper single(a), two(b), three(c), four(d) and five leaves(e) remained, respectively, as compared with control plot(f), thus the high significance were observed among the leaf prunning. Correlation coefficient(r) of 0.925, 0.971 and 0.989, respectively, showed highly significant corrlationship between the level of leaf prunning. In the mean time, the 1000 grain weight, gram weight and hulled rice yield increased in oder at one time urea foliar application plot(B) and two times foliar application plot (A) as compared with the .yield of control plot (C), and the high significance were observed among those treatments. Hulling ratio also showed the same tendency among those treatments(C,B and A plots in order). 3 : The nitrogen and carbon contents of both panicles and leaves in the foliar application of urea were increased. C/N ratio showed a higher level only in the leaves at the urea spray plot. In the mean time, it was found a higher degree of correlationship between the hulled rice yield(0.937),the contents of nitrogen(0.952) and carbon(0.946), and C/N ratio, indicating that the higher the contents of nitrogen and carbon, and C/N ratio the higher the yield of hulled rice. Exp. III: Effect of foliar application of urea and its time during the stage of ear formation on yield of rice plant. 1 : The difference in average number of grains per ear was significant between the time of ear fertilization, showing a tendency of increase of grain number in accordance with earlier treatments although no significance was seen between methods of ear fertilization. Number of grain of 2.0% urea solution foliar application plot, 10% urea solution soil application plot, 2.0% urea solution soil application plot and the control are 65.9, 65.6, 64.4 and 63.9 grains, respectively, indicating the largest grain number in the 2.0% urea foliar application plot among the others. 2 : Maturing rates showed a significance between time of ear fertilization, showing a tendency of increase in the rate with the time lagging until 7 days before Baring. Those of A₁, A₃, A₂ and A_0 were 89.8%. 89,4% 87.8% and 87.5% respectively, showing the highest of rate in A₁ and A₃ in methods of ear fertilization and being highly significant between its treatment. 3 : 1000 grain weights were highly significant between time of application, showing a tendency of increase of weights with the time lagging until days before earings as that of maturing rates. High significance was recognized between methods of ear fertilization, showing the highest in A₂ 23.18 gr. 4 : Yields per 3.3㎡ were not significant between time of ear fertilization, whereas were highly significant between methods of ear fertilization. Those of A₁, A₃, A₂ and A_0 were 1.486 ㎏, 1.491 ㎏, 1.381 ㎏ and 1.328 ㎏, respectively, showing the highest in A₁ and A₃. 5 : Hulling ratios showed significant different between time of ear fertilization, showing the highest in T₂, whereas those of methods of ear fertilization were highly significant between its treatment, Those of A₁, A₃, A₂ and A_0 were 84.72%, 84.06%, 83.29%, and 82.56% respectively, showing the highest m A₂ and A₃ among others. 6 : Yields of hulled rice per 3.3 ㎡ showed significant different between time of ear fertilization, showing the highest in T₁, 1.192 ㎏. Whereas, those were highly significant between methods of ear fertilization. Those of A₁, A₃, A₂ and A_0 were 1.259 ㎏, 1.254 ㎏, 1.149 ㎏ and 1.095 ㎏, respectively, showing the highest in A₁ and A₂. 7 : Contents of nitrogen on rice plant increased in case of nitrogen application as ear fertilizer and showed that the case of urea foliar application was more effective than that of soil application, showing the increased nitrogen content of rice plant was accompanied by carbon content.

Dielectric and Piezoelectric Properties of 0.97(Na 0.52 K 0.443 Li 0.037 ) (Nb 0.96-x Sb 0.04 Ta x )O 3 –0.03(Bi 0.5 Na 0.5 ) 0.9 (Sr) 0.1 ZrO 3 Ceramics for Pizoelectric Actuator

조성진,류주현,정영호 한국전기전자재료학회 2019 Transactions on Electrical and Electronic Material Vol.20 No.4

In this study, 0.97(Na 0.52 K 0.443 Li 0.037 )(Nb 0.96-x Sb 0.04 Ta x )O 3 –0.03(Bi 0.5 Na 0.5 ) 0.9 (Sr) 0.1 ZrO 3 ceramics were fabricated as a function of Ta substitution by conventional solid state method in order to develop the excellent composition ceramics for piezoelectric actuator, and their dielectric and piezoelectric properties were investigated. As the chemical composition results of 0.97(Na 0.52 K 0.443 Li 0.037 )(Nb 0.96-x Sb 0.04 Ta x )O 3 –0.03(Bi 0.5 Na 0.5 ) 0.9 (Sr) 0.1 ZrO 3 system, we obtained the following results: When Ta was substituted for the ceramics, all the ceramics possessed a perovskite structure. When the substitution of Ta was 0, 0.01 and 0.02, Morphotropic phase boundary (MPB) region, which is coexist with rhombodedral phase and tetragonal phase was appeared. With further increasing the Ta substitution, the ceramics showed the strengthened tetragonal phase together with the coexistence of rhombodedral phase and tetragonal phase. The NKN-BNZ ceramics with x = 0.02 showed excellent piezoelectric properties. The density (ρ), piezoelectric constant (d 33 ), planar piezoelectric coupling coeffi cient (k p ), mechanical quality factor (Q m ), and dielectric constant (ε r ) were optimized as 4.456 (g/cm 3 ), 269 (pC/N), 0.419, 51, 1644, respectively.

2010년도 시가문학 분야 연구 동향

조성진 국문학회 2011 국문학연구 Vol.0 No.24

V₂O₅ 및 TeO₂ 함유 유리를 이용한 염료감응형 태양전지 패널의 레이저 봉착

조성진,이경호,Cho, Sung Jin,Lee, Kyoung Ho 한국세라믹학회 2014 한국세라믹학회지 Vol.51 No.3

Effective glass frit compositions enabled to absorb laser energy, and to seal a commercial dye-sensitized solar-cell-panel substrate were developed by using $V_2O_5$-based glasses with various amounts of $TeO_2$ substitution. The latter was intended to increase the lifetime of the solar cells. Substitution of $V_2O_5$ by $TeO_2$ provided a strong network structure for the glasses via the formation of tetrahedral pyramids in the glass, and changed the various glass properties, such as glass transition temperature ($T_g$), dilatometric softening point ($T_d$), crystallization temperature, coefficient of thermal expansion (CTE), and glass flowage without any detrimental effect on the laser absorption property of the glasses. The thermal expansion mismatch (${\Delta}{\alpha}$) between the glass frit and the substrate could be controlled within less than ${\pm}5%$ by addition of 10 wt% of ${\beta}$-eucryptite. An 810 nm diode laser was used for the sealing test. The laser sealing test revealed that the VZBT20 glass frit with 10 wt% ${\beta}$-eucryptite was successfully sealed the substrates without interfacial cracks and pores. The optimum sealing conditions were provided by a beam size of 3 mm, laser power of 40 watt, scan speed of 300 mm/s, and 200 irradiation cycles.

비정상 이동격자 기법을 이용한 5인치급 프로펠러의 공력성능 분석

조성진,이상욱 한국기계기술학회 2021 한국기계기술학회지 Vol.23 No.6

In this study, the analysis of the unsteady viscous flow field using the uRANS equation in a moving mesh was studied. The simulation domain is composed of an overset zone fixed to a propeller and rotating at a constant angular speed and a far zone which is located in the far distance and does not move. Each zone is composed of a polyhedral meshes for the accurate and robust gradient calculation in addition to the reduction of computation time. Simulation technique was applied to the aerodynamic analysis of the 5-inch propeller and compared with those of the MRF and the thrust test. The thrust predicted by the moving mesh showed good correlation with the MRF result within 0.5% difference, but the torque showed a tendency to under-prediction by about 10% compared to the MRF. In the future, we plan to further validate the numerical analysis technique using the moving mesh by applying it to the configurations in which precise test results exist.

V2O5 및 TeO2 함유 유리를 이용한 염료감응형 태양전지 패널의 레이저 봉착

조성진,이경호 한국세라믹학회 2014 한국세라믹학회지 Vol.51 No.3

Effective glass frit compositions enabled to absorb laser energy, and to seal a commercial dye-sensitized solar-cell-panel substratewere developed by using V2O5-based glasses with various amounts of TeO2 substitution. The latter was intended to increase the lifetimeof the solar cells. Substitution of V2O5 by TeO2 provided a strong network structure for the glasses via the formation of tetrahedralpyramids in the glass, and changed the various glass properties, such as glass transition temperature (Tg), dilatometric softening point(Td), crystallization temperature, coefficient of thermal expansion (CTE), and glass flowage without any detrimental effect on the laserabsorption property of the glasses. The thermal expansion mismatch (Δα) between the glass frit and the substrate could be controlledwithin less than ±5% by addition of 10 wt% of β-eucryptite. An 810 nm diode laser was used for the sealing test. The laser sealingtest revealed that the VZBT20 glass frit with 10 wt% β-eucryptite was successfully sealed the substrates without interfacial cracks andpores. The optimum sealing conditions were provided by a beam size of 3 mm, laser power of 40 watt, scan speed of 300 mm/s, and200 irradiation cycles.

해양통제 확보 수단으로서 해군기지 타격에 관한 연구

조성진,조재욱 대전대학교 안보군사연구원 2022 안보군사학연구 Vol.- No.22

신냉전으로 국제사회는 해양통제 확보를 위한 경쟁의 시대로 회귀하고 있다. 과학기술의 발전으로 적 해군기지에 정박한 함정과 시설을 정밀하게 공격하는 해군기지 타격은 그 중요성이 증가하고 있지만 이를 해양통제와 연계하여 이론적으로 고찰한 연구는 부족하였다. 이 논문은 다른 해양통제 확보 수단과 구분되는 해군기지 타격의 가치와 특성을 연구한다. 이를 위해 기존 해양통제 확보 이론을 고찰한 후 해군기지 타격의 발전 추세, 중요성이 증가하는 사유, 역사적 사례를 검토하여 가치와 특성을 도출하였다. 해군기지 타격은 강자와 약자가 모두 사용할 수 있는 전략이며 북한과 주변국의 잠재적 해양 위협을 모두 고려해야 하는 대한민국에게 전략적 선택지를 늘려주는 유용한 수단으로 활용할 수 있다.

대잠전 의사결정지원 시스템에서 표적 탐색 논리 연구

조성진,최봉완,전재효,Cho, Sung-Jin,Choi, Bong-Wan,Jeon, Jae-Hyo 한국군사과학기술학회 2010 한국군사과학기술학회지 Vol.13 No.5

It is not easy job to find a underwater target using sonar system in the ASW operations. Many researchers have tried to solve anti-submarine search problem aiming to maximize the probability of detection under limited searching conditions. The classical 'Search Theory' deals with search allocation problem and search path problem. In both problems, the main issue is to prioritize the searching cells in a searching area. The number of possible searching path that is combination of the consecutive searching cells increases rapidly by exponential function in the case that the number of searching cells or searchers increases. The more searching path we consider, the longer time we calculate. In this study, an effective algorithm that can maximize the probability of detection in shorter computation time is presented. We show the presented algorithm is quicker method than previous algorithms to solve search problem through the comparison of the CPU computation time.

한랭 손상 후 발생한 Fournier's gangrene 1예

조성진,이승현,윤주원,안병권,백승언,서영민 고신대학교(의대) 고신대학교 의과대학 학술지 2006 고신대학교 의과대학 학술지 Vol.21 No.1

Fournier rs gangrene is a polymicrobial, both aerobic and anaerobic, synergistic necrotizing fasciitis of the perineal, genital or perianal regions. Predisposing factors include diabetes mellitus, chronic alcoholism, local trauma,paraphimosis, periurethral extravasation of urine, perirectal or perianal infections, and surgery such as circumcision and herniorrhaphy. Treatment of this disease includes wide excision of devitalized tissue with one or more debridements, and parenteral administration of broad-spectrum antibiotics. Estimated mortality reported in literature ranges from 20 to 75%. Here we reported a case of Fournier rs gangrene after cold injury at the perineal region in a 58-yearold man. The patient had full-thickness skin necrosis developed in the perianal and scrotal region. Several debridements and diverting colostomy were required.

대화체 사설시조의 극적 성격과 그 의미 - 명대 악부민가와의 비교를 중심으로 -

조성진 국문학회 2014 국문학연구 Vol.0 No.29

이 글은 명대 악부민가와의 비교를 중심으로 대화체 사설시조의 극적 성격과 그 의미를 살피는 데 목적이 있다. 이를 위해 화자의 유형에 따른 대화의 양상을 세 가지로 살펴보았다. 이때 대화가 단순한 수사적 장치가 아닌 경우에는, 그것은 사회적 담론의 대립을 의미한다. 한편 ‘인물’, ‘대화’, ‘대립과 갈등’이라는 세 측면에서 사설시조에 틈입한 극적 성격을 분석하였다. 따라서 사설시조에 대화가 도입되면서 나타난 장르적 성격 변화를 서사적 성격이 아닌, 극적 성격의 측면에서 살피고 그 의미를 생각해 보았다. 이런 가운데 대화체 사설시조의 극적 성격의 강화에 핵심적 요소로 작용한 대화가 사설시조에 끼어들게 된 계기를 다각도로 살펴보았다. 결국 사설시조에 ‘대화’라는 매우 특이한 담론 형식이 끼어든 것은 사설시조와 소설, 판소리, 한시, 민요 등의 여러 인접 장르 사이의 교섭 때문이다. 특히 대화체 사설시조의 극적 성격을 고려할 때, 극문학과의 관련성은 특히 유념할 필요가 있다. 그러나 어떤 점에서는 이런 극적 성격의 틈입은 다름 아닌, 실제 현실의 물질적 질서와 사회적 관계의 텍스트 내적 틈입이라 할 수 있다. 실제 현실이야말로 지극히 극적인 것이기 때문이다.