• 농업과학연구
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• 제41권4호
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• pp.303-308
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• 2014

This study was conducted in order to utilize the basic data for weed control by surveying the occurrence of weed species. Total 63 sites of upland Chinese cabbage fields in Chungnam Provinces were investigated. The result of survey, 71 weed species in 25 families were identified and classified to 39 annuals, 16 biennials and 16 perennials. Based on the occurrence ratio, the most weed species belonged to Compositae (20 species). 8, 6 and 5 weed species belonged to Poaceae, Cruciferae and Polygonaceae, respectively, and these 10 weed species in the most six families accounted for 50% of total weed occurrence. The most dominant weed species in upland Chinese cabbage fields were Portulaca oleracea (8.07%), followed by Digitaria ciliaris (7.54%), Rorippa palustris (6.44%), Chenopodium album (5.73%), Echinochloa crus-galli (5.02%) and Cyperus amuricus (3.95).

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1993년도 봄 학술발표회 논문집
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• pp.148-153
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• 1993

The paper presents the results of shaking table test conducted on the 1/3.3 scaled large concrete panel model. The behaviors of large concrete panel structures subjected to seismic excitations are controlled by capacity of horizontal and vertical joints. To Study the seismic capacity of the large concrete panel structures, experimental researches for joints and structural assemblage are needed. Especially, since the magnitude of seismic loads are depended on the variation of time, period and accelerations, dynamic test is needed for estimating the seismic resistance of large concrete panel structures. The objective of this paper is to study the behaviors of large concrete panel structures on seismic excitations and to estimate the safety. Test results are as follows : 1) Test model was critically damaged in the first floor horizontal joint by rocking. 2) Elastic limit(0.12kg) of test model was 5times higher than that of korean seismic design code. 3) Maxium base shear of test model at the ground acceleration of 0.12g was 3.5 times higher than the result of equivalent static analysis. 4) Damping ratio of test model turned out 3.9~5.3% and the period at 0.12g was 0.065sec.

• 대한가정학회지
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• 제29권2호
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• pp.199-215
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• 1991

The purpose of the study is to investigate the relation between marital communication types and self-esteem demographic-socioligical variables to eliminate the methodlogical contradiction of previous studies, this study aimed as follows: (1) correlation between marital communication types and all the independent variables, such as self-esteem, sex, age, academic history, mate selection type, family type, duration of marriage, religion, etc. and marital communication types. (2) discriminating powers of marital communication types by way of the variables mentioned above. In this study questionaire was used on 392 married Seoulites, which consists of two scales and 9 items. In order to verify the hypotheses, the following two methods were used: (1) LOGIT program to the correlation between norminal scale and /or interval scale. (2) discriminating analysis of marital communication types by way of the variables. The results of the study are as follows: (1) Only 4 variables, such as self-esteem, sex, duration of marriage and academic history, correlate with marital communication types in level P<0.05 (2) According to the discriminating analysis of the variables mentioned above, marital communication types cannot be predicted as the predictive power is only 32.2%. (3) Correlation coefficent of authoritic communication type is higher males than females and higher low degree group of self-esteem than high degree group. (4) In the some communication types, direction of correlation coefficent is different in the some variables.

• 열처리공학회지
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• 제6권2호
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• pp.89-97
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• 1993

An improvement in corrosion resistance of various types of Zn-coated steel sheets is thought to be possible with the addition of fine oxide powder to the coating. In this study the corrosion resistance of the $Al_2O_3$ dispersed Zn-Co-Cr electroplated steel sheet has been investigated and the results were as follows : The corrosion resistance of $Al_2O_3$ dispersed Zn-Co-Cr electroplated steel sheets was improved by increasing the contents of Co and Cr ions, and also $Al_2O_3$ powders in the bath because of the increased amount of Co, Cr and $Al_2O_3$ in deposits. In the $Al_2O_3$ dispersed Zn-Co-Cr electroplated steels sheet, the structure of deposits was changed from fine microstructure as observed in high Co containing deposits to coarse microstructure as in high Cr and $Al_2O_3$ containing deposits. By cold rolling of the $Al_2O_3$ dispersed Zn-Co-Cr electroplated steel sheets to about 2 percent, thr corrosion resistance was improved further.

• 대한한방내과학회지
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• 제26권4호
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• pp.741-752
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• 2005

This study was done to investigate recovery effects of YJT, which has been used clinically in diabetes therapy. Mice were administerd Alloxan to induce diabetes. There body weight and kidney weight changes, BUN, creatinine, glucose, total protein and ALP activity in serum, urinalysis, excretion volume of Na+, K+ in urine were measured. The results were as follows: 1. Increase in body weight and kidney weight and the ratio of kidney to body weight of YJT treated group showed similar results with those of normal group. 2 The BUN, creatinine, ALP activity levels in serum of YJT treated group were similar with those of normal group. 3. The glucose level in serum of YJT treated group was better than that of control group 4. The result of the urinalysis in the group of YJT was almost same as that of control group The above results suggest that YJT partially improves the function of the kidney.

• 동의생리병리학회지
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• 제17권6호
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• pp.1552-1559
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• 2003

Objective : The purpose of this study was to identify the functional independence of cerebral vascular disease patients. Method : This clinical data is analyzed on 60 cases of the stroke patients diagnosed through Brain CT scan or MRI scan. at the Hospital affiliated to Oriental Medical College, Dongeui University, from March to July 2003. Result and Conclusion : This clinical data shows significant improvement with their functional independence in 4 weeks, comparing with the initial stage. Functional independence of cerebral vascular disease patients are related with Meridian System and Internal Organs, dysporia. dysuria, lacunar infartion. heart problem, past history therapy, pulse rate.

• 한국결정성장학회지
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• 제5권3호
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• pp.269-277
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• 1995

초고온(5000K 이상)의 고주파 유도 플라즈마(ICP)를 열원으로 사용하여 $AlCl_3$와 $Al_2(SO_4)_3$로부터 $Al_2O_3$ 초미세분말을 합성하였다. 각각 합성된 $Al_2O_3$ 미분말의 결정상은 모두${\alpha} - group({\alpha}, {wdelta}, {\theta})$의 상이었으며, 평균입경 20 nm 내외의 좁은 입도 분포를 가지는 미분말이 형성되었다. ICP tail flame 중간부(X = 500 mm)에서 MgO polycrystal plate위에 부착된 응집플록, whisker 및 판형의 형태를 통 해 기상-고상반응에 의한 성장과 입자간 소결현상을 제안 할 수 있었다. 그리고 위의 결과들로부터 spray-ICP 반응기 내에서의 $Al_2O_3$미 분말 형성과정을 제안하였다.

• 대한소아치과학회지
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• 제21권2호
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• pp.561-569
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• 1994

The autotransplantation procedure were performed for the cases with impacted maxillary anterior teeth, which were thought unrealistic by the treatment with surgical exposure and orthodontic traction into the arches. The results were as follow : 1. As the treatment with autotransplantation is the last resort, the case indicated should be selected cautiously by adequate case analysis. 2. In order to reduce postoperative complication, damages to periodontal ligaments and adjacent bony structures should be minimized by conservative surgical procedures. 3. After autotransplantation procedures, postoperative endodonic treatment and continuous follow-up check with clinical and radiographic examination should be followed. Although the autotransplantation procedure is not the treatment of choice in most cases, it was thought to be a good alternative in certain cases when orthodontic treatment is unrealistic with continuous study to overcome the handicaps.

• 한국보건간호학회지
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• 제30권1호
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• pp.136-148
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• 2016

Purpose: Patterns of traditional medicine (TM) utilization vary depending on culture, historical significance, and regulations. We seek to understand how socio-demographic factors are related to TM use in Korea. Methods: The longitudinal cohort survey data of the Korea Health Panel (2008-2012) were used for the analysis. Information on TM included questions on 4 types of TM therapies used in South Korea (e.g., acupuncture, moxibustion and cupping, herbal therapies, and massage using hand). To adjust clustering across multiple observations per individual, individual random effects were used in the multivariate analysis. All analyses were performed using Stata 11.0. Results: A majority of Koreans (60%) used WM only during a year, and few people used TM only. Among TM users, most (93%) used it along with WM and 8% used TM only. Our regression analysis showed that female, age 34-64, low-educated, and sicker people were more likely to use TM. Conclusion: This study provides evidence on the relationship between TM utilization and socio-demographic factors.

• 콘크리트학회논문집
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• 제11권5호
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• pp.89-98
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• 1999

This paper evaluates nonlinear response characteristics of precast concrete frame buildings. where plastics hinging occurs in the precast connection. Designs were developed for buildings of 5, 10 and 15 stories in hight for moderate seismic risk regions of the U. S. The responses of the buildings were analyzed using DRAIN-2DX and following Nonlinear static analysis procedure of ATC 19. The main variables of the analyses were the strength and stiffness of the connection. Also, for the analysis, the bi-linear response model, developed and inserted into the DRAIN-2DX program by Shan Shi and D. Fouch, was used. With the results of analysis, the deformation demands of the connection of precast concrete frame buildings are proposed by using equal-dissipated energy capacity. It was shown that the strength of the buildings as well as their displacement capacities decreased with the decrease of either the strength or stiffness in the connections. Therefore such changes also require reductions in the response modification factors for such buildings. However, if the precast concrete frame building has plastic hinging in the connection, and has a more ductile connection than the monolithic frame building, then no reduction in R may be necessary. The deformation demand required of the connection to achieve that condition is evaluated and a simple relation is suggested in the paper.