NaCl에 대한 콩 품종간의 생리학적 반응 차이

박종환,천상욱,최원열,정선요 한국콩연구회 2003 韓國콩硏究會誌 Vol.20 No.2

염분조건에서 콩의 피해정도 또는 피해과정 등 생리적 특성과 내성 및 감수성 품종간의 반응차이를 구명하여 내염성 연구의 기초자료로 활용하고자 본 연구를 수행하였다. 감수성 및 내성 품종으로 선발된 두 품종간에 60mM의 염분처리에 따른 생장 및 상대생장율 반응, 잎의 해부학적 관찰, 광합성 및 호흡량, proline 축적 및 nitrate reductase와 peroxidase 활성 등의 반응특성을 비교한 바 다음과 같은 결과를 얻었다. 내성품종 Lee는 무염처리에 비해 초장이 19% 감소한데 반해 감수성 품종 Jackson은 40% 감소하여 뚜렷한 차이를 보였다. 다육질의 정도는 내성품종이 무처리에 비해 58% 증가하였으나 감수성 품종은 오히려 21%가 감소하였고 감수성 품종의 생체중, 건물증, 수분함량의 감소가 뚜렷하게 나타났다. 상대생장율(RGR)과 순동화율(NAR)의 경우 내성품종은 염분처리에 의해 오히려 증가한 경향이었으나 총 건물증에 대한 엽면적 비율(LAR)과 개체생장율(CGR)은 감소하였다. 한편 감수성 품종은 조사된 모든 생장율이 감소하는 경향이 뚜렷하게 나타났다. 염분처리로 잎의 두께는 내성품종이 11% 증가한 반면 감수성 품종은 30% 정도 감소되었는데 이는 다즙질화로 인한 엽육세포의 두께 변화와 관련이 있음을 알 수 있었다. 광합성 정도는 내성품종에서 무처리와 유사하였으나 감수성 품종은 무처리에 비해 14% 감소하였고 호흡량에 있어서는 두 품종 모두 증가되어 각각 11과 8% 증가하는 것으로 나타났으며 두 품종 모두 O2생산비율보다 O2소모비율이 높게 나타났다. 염분처리에 따른 proline 축적량은 무처리에 대비하여 내성품종은 64% 증가하였으나 감수성 품종은 200% 증가하였다. Nitrate reductase의 활성은 염분처리로 인해 내성 품종이 114% 증가하는 반면 감수성 품종은 반대로 37% 감소하였으며 peroxidae 활성은 내서 및 감수성 품종 모두 각각 56, 50% 증가하는 경향을 보였다. 이상의 결과로 보아 지상부의 생육, 상대생장율, 엽육세포의 두께, 광합성 및 호흡량, proline 축적량, nitrate reductase와 peroxidase활성은 콩의 염해 및 내염성 연구에 중요한 지표가 될 수 있음을 확인할 수 있었다. Salt tolerance of soybean is highly dependent on cultivar as well as cultural condition. The objective of this study was to determine difference in parameters of physiological responses between NaCl-tolerant and NaCl-susceptible cultivars selected from a bioassay. Tolerant cultivar "Lee" and susceptible cultivar 'Jackson' soybean (Glycine max (L.) Merr.) cultivars were grown in hydroponic system and treated with NaCl solutions of 0 and 60mM, corresponding to electric conductivity of 1.2 and 7.3 dS/m, respectively, 20days after emergence. NaCl at 60mM inhibited plant lengths of tolerant and susceptible soybean cultivars by 19% and 40%, respectively. NaCl enhanced leaf succulence of tolerant cultivar by 58%. while it decreased that of susceptible cultivar by 21%. With NaCl treatment, fresh and dry weight, and water content of leaves in susceptible cultivar were more decreased than those of tolerant cultivar. Relative growth rate (RGR) and net assimilation rate (NAR) of tolerant cultivar were increased by NaCl treatment, while RGR and NAR of susceptible cultivar were clearly reduced. Total leaf thickness of tolerant soybean cultivar was significantly enhanced up to 11% by NaCl treatment due to expanding mesophyll cells. However. NaCl reduced leaf thickness of susceptible cultivar by 30 8. Photosynthesis rate of tolerant cultivar by NaCl treatment was not affected, however that of susceptible cultivar was reduced by 14% as compared to control. Respiration of both cultivars was increased up to 11 and 8%, respectively. Free-proline content of leaf by NaCl treatment was increased by 64% in the tolerant cultivar and 200% in the susceptible. respectively. NaCl of 60 mM also increased nitrate reductase and peroxidase activities of tolerant cultivar by 114% and 56%. respectively, while it reduced nitrate reductase activity of susceptible cultivar by 37%. The results suggested that the physiological data can use as parameters for salt stress or salt tolerance test to improve sensitivity in screening program.

혼합용매계에 있어서 전해질의 전도도에 관한 연구 (Ⅰ) : 메탄올-물 혼합용매에서의 염화칼륨의 전도도 The Conductance of Potassium Chloride in Methanol-Water Mixtures

박종열,엄태섭 東亞大學校 1974 東亞論叢 Vol.11 No.2

메탄올-물 혼합용매에서 염화칼륨(KCl)의 전도도를 25。와 30。C에서 측정하고 Fuoss-Onsager식을 적용하여 limiting equivalent conductance(??)와 conductance parameter ?? 및 ??를 구하였다. 즉 0.1에서 0.8몰분율에 이르는 7가지 조성의 혼합용매 및 단일 용매인 물과 메탄올에 대해서 각 용매마다 0.01∼0.10M 농도범위의 염화칼륨용액을 만들어 그 전도도를 측정하였다. 극한 당량전도도(??)는 Fuoss-Onsager식에 의거하여 一次的인 近似法으로서 농도(??) 변화에 대한 당량전도도 값을 plot하여 얻은 직선의 기울기에서 A??를 구하였다. 다음 이차적으로 극한당량전도도 값을 구하기 위하여 농도(c)변화에 대한 ?? 값의 plot에서 slope ??와 intercept 즉, 극한당량전도도(??) 값을 최소자승법으로 구하였다. 실험결과 극한당량전도도는 온도 상승에 따라 증가함을 보였으며 또한 혼합용매 조성에따른 ??의 변화는 0.4 몰분율에서 minimum을 나타내었다. 한편 conductance parameter ??는 0.3 몰분율에서 최소값, 1.0 몰분율에서 최대값을 보였고, ??는 매우 근소한 작은값으로 관측되었으나 어떠한 규칙성 있는 변화는 볼 수 없었다. The conductances of potassium chloride were measured at 25。C and 30。C in methanol-water mixtures. The limiting equivalent conductance(∧??) and conductance parameters ?? and ?? were obtained using the Fuoss - Onsager’s conductance equation in the following form; ?? A first approximation for the quivalent conductance at infinite dilution was obtained from a plot of ∧ against ??. The parameter ?? is thus calculated, and a better value for ?? was found through a plot of ?? against concentration, and then determined the slope ?? and intercept ?? with a least square fit. The limiting equivalent conductance and conductance parameter as a function of solvent composition and temperature are discussed in terms of the structural change of the solvent, and also the interactions between ion-solvent and solvent respectively. The experimental results indicate that the limiting equivalent conductance showed the minimum value at 0.4mole fraction of methanol, which was the good analogy with those results of the partial molal volume of which observed for the other electrolytes with respect to the solvent system as examined in this study. It has been concluded that this behavior seems presumably to be the results of having minimum structuredness and free volume of water attributable to the electrostriction effect of ions. The parameter ?? showed the minimum at 0.3 mole fraction, while the value of ?? was found very small with varing the solvent composition.

일부 생산직 근로자의 소음과 사회심리적 요인이 혈압에 미치는 영향

박종구,강명근,차봉석,고상열,장세진,고상백 大韓産業醫學會 1997 대한직업환경의학회지 Vol.9 No.2

This study was conducted to assess the effects of noise exposure and psychosocial factor on blood pressure in manufacturing workers. The study subjects are 414 workers(243 males, 171 females) employed at the noisy department. The mean age of low exposed group(<85dB) was 34.65±9.53 years, and that of high exposed group(≥85dB) was 36.37±11.15 years. The difference in mean age was not significant. The mean and distribution of working duration, smoking status, drinking status were not significantly different between two groups. The mean systolic blood pressure of the low exposed group was 120.01±12.06 mmHg, and that of high exposed group was 126.27±13.84mmHg. The mean diastolic blood pressure of the low exposed and the high exposed group were 77.18±10.83 mmHg, and 83.46±11.22mmHg respectively. These differences of blood pressure were statistically significant(p<0.05). The workers in noisy department have significantly less work environmental satisfaction, higher job demand, and higher social support. The mean values of psychosocial distress were higher in the workers of the noisy department, but the difference was not statistically significant. This study was to speculate whether the work environmental satisfaction and social support modify the association between the noise exposure level and the blood pressure. The result showed that work environmental satisfaction could not modify the association between the blood pressure and the noise exposure. Social support at work did not modify the association. Furthermore, we evaluated the high job strain from a combination of ratio of the high job strain group for hypertension in diastolic blood pressure were statistically significant, but not in systolic blood pressure. Hierarchical multiple regression analysis was used to determine whither the independent variables contributed to explaining the blood pressure. After controlling for possible confounders, we found that the noise exposure level was a correlated of the diastolic blood pressure. But no association between the noise exposure level and the systolic blood pressure. No significant result was found for psychosocial factor.

모바일 환경에서 원격지 시스템의 고장 진단을 위한 로그 인덱싱

박근옥,윤병선,오인수,박병율,임종태 公州大學校 工學硏究院 生産技術硏究所 2003 論文集 Vol.11 No.-

We use the mobile client and confirm the service of a Remote Systems to the execution. The manager has the duty to manage the system to the stability. The log which the situation of a remote systems is recorded in the database. A remote systems to be managing uses the database. A remote system to be managing uses the log when the failure happens.

NaCl이 大麥의 發芽와 幼苗生育에 미치는 影響

崔元烈,朴鍾煥 全南大學校 農漁村開發硏究所 1986 農業科學技術硏究 Vol.21 No.-

Physiological responses and related metabolites in 4 cultivars of barley (Hordeum vulgare L. ) were measured in NaCl stress condition throughout germination and seedling stages. The higher concentrations and the passage of time unfavorably influenced seed germination status and seedling stage, specifically, delayed the emergence and reduced the germination rate. The variety with higher rate of germination under stress had the tendency to give higher ability to the salt tolerance in seedling. The variety which had high germination rate showed high amylase activity, but the activity was reduced by increasing NaCl concentration. Water potential was reduced by NaCl treatment bat the significant difference was not observed. Free proline of 2nd leaf was accumulated to 10 ~ 35 folds of control in treatment. This finding may indicate that it will be the parameter of the selection. of salt-tolerant variety as the varietal differences in accumulating ability were distinct. In testing salt-resistance of variety, it will be advisable that seeds should be immersed in high concentration at germination stage and seedling should be immersed for longer period of time.

인체 두피 모낭 외측모근초 각질형성 세포의 배양

이종석,이성열,박영립,서용원,황규왕 순천향의학연구소 1999 Journal of Soonchunhyang Medical Science Vol.5 No.1

Follicular stem cell was assumed as a hair matrix cell. But, recently it was suggested that follicular stem cells were in the bulge portion of outer root sheath of hair follicles, and its proofs were reported. We tried to culture outer root sheath keratinocytes in the bulge portion of human hair follicles, and it would be experimental base for many factors and drugs realated with hair growth and differentiation. The outer root sheath keratinocytes were isolated from plucked human hair follicles, and could be serially passaged for up to 2 times on used biologic feeder cell layer.

모바일 데이터 리플리케이션 아키텍쳐 설계

김종완,박용팔,류성열 崇實大學校 生産技術硏究所 2001 論文集 Vol.31 No.-

The database to save and manage for data, in distributed system, very difficult to maintain consistency by lack of stability, access of multi-user. The distributed database has used in client/server system by connected with wired LAN. But we will be used distributed database in Mobile System, like PDA(Personal Digidal Assistant). Specially, The Mobile System has some limitations to connect and link of databases or networks. Then any method will be required for database management different from wired LAN's to maintain. This thesis will consider already LAN based distributed data replication and suggests a extended Data Replication Method for mobile system and Architecture. The case study shows that positive results we developed data replication for Mobile MIS(Medical Information System) with Company A.

개량된 초임계수 산화법에 의한 염소계 유기물 (PCB, 4-DCBz)의 완전분해반응

이상환,박기철,박윤열,양종규,김정성,富安博 한국환경과학회 2005 한국환경과학회지 Vol.14 No.5

For the destruction of toxic chlorinated organic compounds, this study proposes improved supercritical water oxidation method (multistep oxidation) using sodium nitrate as an oxidizer. This method solves the problems involved in the existing supercritical water oxidation method. Multistep oxidation means that NaNO₃ is oxidized to N₂ via NaNO₂ and NO. Toxic and hard to destroy organic substances like para-dichlorobenzen(4-DCBz), polychlorinate biphenyl(PCB) ware oxidized to non toxic substances in a condition, in which rapid pressure and temperature rise is restrained as much as possible. 4-dichlorobenzene(4-DCBz) and Polychlorinate biphenyl(PCB) in condition(450℃, p_(w)=0.25g/cm³, 30min) Was discomposed perfectly.

비평면구조를 갖는 4배위 Cu(Ⅱ) 열분해 반응

金永仁,朴鍾烈,崔星洛 부산대학교 기초과학연구소 1990 부산대학교 기초과학연구소 연구논문집 Vol.10 No.-

tert-Butyl alcohol-물 混合溶媒系에 대한 n-Alkylamine 염산염의 電導度에 관한 硏究

尹庠基,朴鍾烈 東亞大學校 大學院 1977 大學院論文集 Vol.1 No.-

3級 bytyl alcohol-물 混合溶媒中에서 CH3NH3Cl, EtNH3Cl, n-PrNH3Cl 및 n-BuNH3Cl의 네가지 同族體 amine 鹽의 당량전도도(Λ)를 25℃에서 測定하고 Fuoss-Onsager의 羊理論式으로서 여러가지 전도도 parameter를 구하였다. 0.1 mole fraction(m.f.)에서 0.8 m.f.에 이르는 여러가지 組成의 混合溶媒系에서 공통적으로 amine염의 濃度增加에 따라 Λ는 減少하고 Λvs. ?plot는 거의 直線性을 보였다. 또한 溶媒조성에 따른 극한당량전도도 (Λ.)는 cosolvent t-buOH의 농도증가에 따라 즉 m.f.가 커짐에 따라 줄어 드는데 그 줄어드는 幅이 cosolvent의 농도가 묽은쪽, 즉, 물에 가까울수록 크고 특히 0.1 m.f.에서 特異하게 큰 감소를 보였다. 한편 0.8m.f.부근에서는 Λ.가 극히 적은 값으로 관측되었다. 이러한 현상들은 혼합용매계의 유전상수(ε), 용매구조와 밀접한 관계가 있는 것으로 논의되었다. 실험결과는 같은 시료로서 methanol-물, 2-propanol-물 혼합계에서 관측한 결과와 많은 유사점과 차이점이 나타났고 이러한 점에 대하여 비교 검토 하였다. Conductance measurements are reported for the homologous series of MeNH3Cl, EtNH3Cl, n-PrNH3Cl and n-BuN3HCl in various t-butyl alcohol and water mixtures for the range from 0.1 m.f. to 0.8 m.f. at 25℃ and conductance parameters are determined by means of Fuoss-Onsager's semiempirical equation. Equivalent conductances(Λ) are decreased with the increasing of the salts concentration for all salts species while the plot of Λ vs. ? showed nearly linearity. The limiting equivalent conductances(Λ.) are also decreased with the increasing of the concentration of cosolvent i.e. m.f. of t-butyl alcohol and anomalously large decrement in Λ. as increasing m.f. cosolvent nearly for 0.1 m.f., on the other hand significantly small decrements are showed near for 0.8 m.f. solvent. These behaviors are interpreted in terms of the change of dielectric constant and structural effect for binary mixtures. Considerable similarities or differences are found through the results of present work in comparision with those of the results for water mixtures of methanol and 2-propanol with the same salts.