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살충제 Monocrotophos와 Phosphamidon의 사과 중 잔류특성 평가
권찬혁,이영득 대구대학교 생명과학연구소 2003 생명과학연구 Vol.1 No.3
국내 과수재배시 사용되고 있는 2종의 유기인계 살충제인 monocrotophos와 phosphamidon에 대하여 사과 중 잔류특성을 조사하고 수확물 중 잔류수준에 대한 안전성을 평가하고자 하였다. Monocrotophos와 phosphamidon 액제를 살포시기와 회수를 달리하여 사과 과수에 살포하고 수확물 중 잔류량을 조사한 결과, 약제 최종살포일이 수확기에 임박할수록 또한 살포회수가 증가할수록 수확물 중 잔류량이 높아지는 경향을 나타냈으며, 살포회수보다는 최종살포시기가 잔류수준에 미치는 영향이 더 크게 나타났다. 사과 과실에서 monocrotophos에 비하여 phosphamidon이 더 빠른 속도로 소실되었으며 phosphamidon의 두 유효성분 중 β-이성체 보다는 α-이성체의 잔류성이 더 길게 나타났다. 살포시기와 회수에 따른 수확물 중 잔류량과 잔류허용기준을 비교할 때 현행 안전사용기준은 적합한 것으로 판단되었다. 한편 본 연구에서 새로이 확립한 monocrotophos 잔류분석법은 분석감도, 효율 및 재현성이 기존분석법보다 우수하여 일상적 잔류분석법으로서의 활용이 충분히 가능하다고 생각된다. A supervised field trial was undertaken to evaluate the terminal residue of two systemic organophosphorus insecticides, monocrotophos and phosphamidon, in apple fruits. Monocrotophos 24% SL and phosphamidon 50% SL formulations were foliar-applied two to four times at the standard rate of 0.12 and 0.25 ㎏ a.i./500 liter/10a per application for dilute spray, respectively. Apple fruits were taken at harvest and subjected to the residue analysis. Terminal residues of monocrotophos and phosphamidon in apples which ranged 0.55∼1.32 and 0.35∼1.55 ㎎/㎏, respectively, tended to be higher as shorter pre-harvest intervals (PHI) and higher number of applications were adopted. Application timing other than frequency seemed to be the critical factor to determine the terminal level of both residues. When applied in a same manner, monocrotophos was more persistent than phosphamidon in apple fruits under field condition, while α-isomer was resided longer than β-isomer between two active ingredients of phosphamidon. Considering maximum residue limits of monocrotophos and phosphamidon for apples, residue levels found in this study confirmed that current safe use standards for the insecticides could be practically employed. An analytical method newly developed for monocrotophos residues during the study showed high reproducibility superior to erratic GLC method.
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병렬 객체지향 표기 언어에서의 통신과 동기화를 위한 객체 관리기
권혁찬,최숙영,유우종,유관종 충남대학교 기초과학연구소 1995 忠南科學硏究誌 Vol.22 No.2
In this paper, we present the design and implementation of object manager for communication and synchronization in POOSL(Parallel Object-Oriented Specification Language). POOSL is a specification language which is based on object-oriented concepts and provides various granularities of parallelism and communication methods. An object manager handles synchronization of objects and supports three types of communication, that is, synchronous, asynchronous and future type communication. Object manager is automatically generated in the phase of translation of POOSL. We implemented the object manager using lex and yacc.
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투입정보의 제시조건에 따른 정신지체아의 외현기억과 암묵기억
권혁용,박찬웅 대구대학교 사범대학 부설 교육연구소 2007 敎育硏究 Vol.3 No.1
The objectives of the present study were to examine the effects of input information presentation condition in the encoding stage on explicit memory and implicit memory in mentally retarded children and ordinary children and to test memory dissociation between explicit memory and implicit memory according to input information presentation condition. Based on the results of this study, we suggested effective input information presentation condition for mentally retarded children?fs learning and proposed the educational use of implicit memory, which is a relatively strong point of mentally retarded children. The subjects of this study were 30 mentally retarded children attending a special school or a special class at elementary school in Busan, and 30 ordinary kindergarteners and 1st?]grade elementary students. Thus, a total of 60 children participated in this research. This study was carried out through tests according to sense pattern and tests according to processing level. Tests according to sense pattern were a free recall test and a word completion test, which were conducted after a while from presenting input information in the conditions of words/ pictures, words/voices, and words/pictures/voices. Tests according to processing level were a free recall test and a word completion test, which were conducted after a while from presenting input information in the conditions of cognitive processing and semantic processing. Using SPSS 12.0, collected data were analyzed through repeated measures ANOVA to test the effect of interaction between the groups and the presentation conditions, and through simple main effect to analyze variables. In addition, the results of memory test according to presentation condition were analyzed through t-test in order to test memory dissociation. The results of this study are as follows. First, it was effective to present input information to the visual simple sense in mentally retarded children, and to the visual?]auditory complex sense in ordinary children. Second, it was effective to present input information after semantic processing in both mentally retarded children and ordinary children. In conclusion, the results of our study suggest that, for mentally retarded children, it is effective to present input information after semantic processing and targeting the visual simple sense, and the presentation condition has a relative strength in implicit memory, which is unintentional elicitation. 본 연구에서는 부호화 단계에서 투입정보의 제시조건(감각양상에 따른 제시조건과 처리수준에 따른 제시조건)이 정신지체아와 일반아동의 외현기억과 암묵기억에 어떠한 영향을 미치는가와 투입정보의 제시조건에 따른 외현기억과 암묵기억간의 기억해리현상을 검증하여, 정신지체아의 기억에 대한 특성과 정신지체아의 학습에 있어서 투입정보의 효과적인 제시조건을 밝히고 정신지체아의 상대적 강점인 암묵기억의 교육적 활용을 제기하는데 그목적이 있다.
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一部地域 老人들의 主權的 建康水潗에 영향을 미치는 IADL에 관한 硏究
김근조,박흥기,권혁수,배수찬 대한정형물리치료학회 2001 대한정형도수물리치료학회지 Vol.7 No.1
This research have been made to define how the IADL (Instrumental Activity of Daily Living) performance and the subjective health index of the Aged are affected by their residential circumstance, gender and age, and how deeply these two factors are related and interact. For the period of June 1 to July 31, 2000, we had conducted a questionnaire and direct interview with 693 persons over age sixty-five (65) in Daejon and in other adjacent area, grouping into three different residential types The Aged living at home, The Aged living at welfare facilities and The Aged living alone, and studied on how the IADL performance and the subjective health index of the Aged are influenced and interact as per their characteristics, daily activity and mentality. We had analyzed all the data obtained through this research by the method of : - analysis of frequency as per specific factors by SPSS 10.0/PC+, - x^2 test, - t - test, - ANOVA, - multiple regression analysis by factors. The research concludes followings : a. It appears that the three (3) factors such as gender, age and residential circumstance of the Aged deeply affect the IADL performance and subjective health index of the Aged. (p<0.01) b. With regard to IADL performance of the Aged by the gender, it was analyzed that the female-Aged gains 23.8 point on average, which shows the performance of the female-Aged is less independent. (p<0.01). In addition, it was also found that the IADL performance is becoming less and less independent following their age increasing. In analyzing IADL performance by the residential type, it appears that the Aged living at welfare facilities gains the lowest 21.5 points and is least independent. It was also found that the Aged living at welfare facilities need some assistances from others for their performing IADL. (20-24 point) (p<0.001) c. With regard to the subjective health index of the all-Aged participated in this research, the analysis indicates 8.8 point and this is considered as a point of general standard (7-10 point). In analyzing this index by the gender, the female-Aged gains only 8.6 point which explains a lot of female-Aged consider they are not really healthy. (p<0.001) In analyzing this index by the residential type, the Aged living at welfare facilities and the Aged living alone gain the comparatively lower point, - respectively 8.4 point for the Aged living at welfare facilities and 8.8 point for the Aged living alone. The Aged living at these two residential types express they are obviously in a bad situation of health. (p<0.001) d. With regard to the factors affecting the IADL performance and the subjective health index of the Aged, it was analyzed that the IADL performance can largely be affected by the factors such as depression, frequency of going-out and age rising, and that the subject health index can also deeply be affected by depression, pain and by how much they are satisfied with their current living conditions. e. It was analyzed that the interacting between the IADL performance and the subjective health index is not that strong but even weak. As a result, we were able to conclude that the IADL performances is less independent in case of the female-Aged, the Aged living at welfare facilities, and following the age rising. As for the subjective health state the Aged themselves are aware of, we concluded that the female-Aged, the Aged living at welfare facilities and the Aged living alone, are more critical about their health. From this research, we were able to realize that, when the OMT (Orthopedic Manual Therapy) needed, the physical therapists are really required to have a correct and cautious understanding of the situation in which the aged persons are, and take care of them with more concerns and more improved treatment.
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