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      • KCI등재

        염산용액에서 비누화 PC88A에 의한 용매추출로 Gd와 Sm의 분리

        이만승,이광섭,이진영,김성돈,김준수 대한금속재료학회 2005 대한금속·재료학회지 Vol.43 No.5

        Solvent extraction experiments have been performed to separate Gd and Sm from chloride solution with PC88A and saponified PC88A. The effects of extraction conditions on the distribution coefficients of Gd and Sm were investigated. The distribution coefficients of Gd were higher than those of Sm in the experimental ranges of experimental conditions of this study. A solvent extraction model was developed to predict the distribution coefficients of metals and separation factor between Gd and Sm from the initial extraction conditions. The measured distribution coefficients of Gd and Sm with PC88A and saponified PC88A showed good agreements with the predicted values. (Received March 3, 2005)

      • KCI등재

        염산용액에서 PC88A에 의한 Sm의 용매추출

        이만승,이광섭,이진영,김성돈,김준수 대한금속재료학회 2004 대한금속·재료학회지 Vol.42 No.10

        Solvent extraction experiments of Sm were performed from chloride solution with PC88A and saponified PC88A. Solvent extraction reaction of Sm with PC88A and the corresponding equilibrium constant were evaluated from the experimental and ionic equilibria data as follows Sm^(3+)_(aq)+ 1.5H₂A_(2,org)= SmA_(3,org)+ 3H^(+)_(aq) , K = 0.33. The predicted distribution coefficients of Sm agreed well with the experimental results. The distribution coefficients of Sm with saponified PC88A and the values of equilibrium pH depended on the initial extraction conditions. When the concentration of PC88A was in excess of that of Sm, saponification of PC88A greatly enhanced the extraction of Sm. (Received June 21, 2004)

      • KCI등재

        염산용액에서 TBP에 의한 FeCl₃ 용매추출의 평형

        이만승,이광섭 대한금속재료학회 2003 대한금속·재료학회지 Vol.41 No.8

        Solvent extraction equilibria of FeCl_(3) from chloride solutions with TBP were analyzed by considering chemical reaction, mass balance, charge balance and extraction reaction. The activity coefficients of solutes in the aqueous phase were calculated by Bromley equation. Extraction reaction of FeCl_(3) with TBP in the experimental range of this study was determined from the dependence of the distribution coefficient of FeCl_(3) on the chloride ion concentration. By applying ionic equilibria to the results of solvent extraction, equilbrium constant of the extraction reaction was estimated to be 3.43×10^(2). The equilibrium concentrations of solutes in both phases after extraction could be calculated with the ionic equilibria developed in this study. The predicted concentrations of Fe in the aqueous phase after extraction agreed well with those experimentally measured.

      • KCI등재

        비누화 PC88A에 의한 NdCl₃와 SmCl₃용매추출의 화학모델

        이만승,이광섭,이진영,김성돈,김준수 대한금속재료학회 2004 대한금속·재료학회지 Vol.42 No.10

        A chemical model was developed to estimate equilibrium constant for the solvent extraction of Nd and Sm from chloride solution with saponified PC88A. The model could be employed to predict the distribution coefficient of metal from the initial extraction conditions. The model consisted of chemical equilibria, mass balance, charge balance and solvent extraction reaction. By applying the model to the experimental conditions and data, equilibrium constants for the solvent extraction of Nd and Sm were obtained. The effect of the saponification of PC88A on the extraction of Nd was explained in terms of the equilibrium constant obtained in this study and the change of equilibrium pH. The predicted distribution coefficients of Nd and Sm agreed well with those measured. (Received July 14, 2004)

      • KCI등재

        저강도 트레드밀 운동과 풀 스펙트럼 조사가 흰 쥐의 항산화효소에 미치는 영향

        송광섭 ( Gwang Seop Song ),권성진 ( Seong Jin Kwon ),권선옥 ( Sun Ok Kwon ) 한국운동생리학회(구 한국운동과학회) 2014 운동과학 Vol.23 No.2

        본 연구는 4주령의 Sprague-Dawley계 수컷 흰 쥐를 대상으로 4주간의 저강도 유산소 운동과 10,000 lux의 풀 스펙트럼 조사가 항산화효소에 미치는 영향을 규명하기 위하여 통제군(n=9), 운동군(n=9), 빛 조사군(n=9), 그리고 운동+빛 조사군(n=9)으로 분류하여 실험처치를 한 후, 안정 시 혈액의 분석을 통해 항목별로 집단 간 비교·분석하여 다음과 같은 결론을 얻었다. MDA는 통제군에 비해 운동군, 빛 조사군, 복합처치군 모두에서 유의한 차이를 나타내지 않았다. SOD의 활성은 집단 간에 유의한 차이를 나타냈으며, 운동군과 빛 조사군, 운동군과 복합처치군 간에 유의한 차이를 보였다. CAT의 활성은 통제군에 비해 운동군, 빛 조사군, 복합처치군 모두 높은 수치를 보였지만 통제군과 복합처치군 간에만 유의한 차이를 나타냈다. 또한 통제군 다음으로 낮은 CAT 활성을 보인 빛 조사군도 복합처치군과 유의한 차이를 나타냈다. GPX의 활성은 통제군에 비해 운동군, 빛 조사군, 복합처치군 모두 높은 수치를 보였지만, 통제군과 복합처치군 간에만 유의한 차이를 나타냈으며, 통제군 다음으로 낮은 GPX 활성을 보인 운동군과 복합처치군 간에도 유의한 차이를 보였다. In order to examine the influence of 4 weeks` low-intensity aerobic exercise and irradiation of artificial light at 10,000 lux on the lipid peroxide, and antioxidant enzymes in Sparague-Dawley rats, this study compared and analyzed the control group (n=9), the exercis e group (n=9), the irradiation group (n=9) and the exercise + irradiation group (n=9) for each research item via the analysis of blood at a stable point after an experimental processing, and then it produced the following results . With regard to the MDA, all of the exercise, irradiation, and complex processing groups did not s how significant differences from the control group. As for the activeness of the SOD, there were significant differences among the groups, between the exercise and irradiation groups, and between the exercise and complex processing groups. For the activeness of the CAT, all of the exercise, irradiation, and complex processing groups showed higher figures than the control group, but significant differences occurred only between the control and complex processing groups. Also, there were significant differences between the irradiation and complex processing groups, both of which showed the next lower CAT activeness than the control group. As for the activeness of the GPX, while all of the exercise, irradiation, and complex processing groups showed higher figures than the control group, significant differences occurred only between the control and complex processing groups, and there were significant differences between the exercise and complex processing groups, both of which showed the next lower CAT activeness than the control group.

      • KCI등재후보

        양형조사와 양형심리

        송광섭(Song Gwang Seop),김성천(Kim Seong Cheon),정혜욱(Choung Hye Uk) 중앙대학교 법학연구원 2015 法學論文集 Vol.39 No.2

        In criminal procedure, sentencing requires evenness where the same degree of penalty is enforced to those of the same type of criminal cases. This is a very important subject in terms of society as it works to secure general public's trust towards the law and order allowing the preventive function of the penalty to properly work. In order for the sentencing to be suitably given, the factors that are considered during the imposition of a sentence should be thoroughly examined. Such factors include: offender's crime motive, methods, relationship with the victim, personality, daily behavior, growth environment, education, and etc. Currently, aforementioned sentencing factors are examined by the presentence investigators under the court and the investigation prior to ruling system stated in the Act on Probation is also used as a means of presentence investigation. Such a court-led authoritative presentence investigation does not have an appropriate legal basis within the adversary system of criminal procedure structure. Moreover, if the presentence investigation system based on the adversary system is not legislated, the ideology of criminal procedure, which is to establish the procedure related facts through fair process and trial, cannot properly operate in the domain of examining the sentence factors. Legislation of the presentence investigation system that is based on the adversary system seems to be the only probable solution to this problem. Also, considering that the court does not have enough personnel to investigate the fact relevance whereas the prosecution possesses such personnel and can utilize police investigative force to investigate the sentence factors, it is a much more valid and practical solution. Consequently, the prosecution and the defendant or the attorney can present the sentencing factors related evidences and the counter data, respectively, to engage in a legal argument whereas the court will make an objective judgement regarding the dispute allowing the truth to be approached by a more fair process. On the other hand, current criminal procedure is designed to conduct the sentencing hearing at the time of a trial. The sentencing hearing is supposed to be conducted on the basis the defendant being found guilty. However, current procedure takes the defendant who is not yet found guilty and force him to go through the hearing. This is a violation of presumption of innocence principle and poses a problem. To resolve such problem, the sentencing hearing should be separated from the trial as it is in the other countries who adapted the British/American legal system. By separating the trial into 2 steps, problems the current combined-hearing system has such as ① possibility of the judge's unfair prejudgement, ② difficulty in guaranteeing the defendant and attorney's right to defence, ③ difficulty in maximizing the penalty's preventive function, ④ difficulty in rationalizing and specializing the sentencing, ⑤ hindering the judicial economy, ⑥ defendant's privacy infringement, and etc. can be adequately resolved.

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