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      • 도로교통범죄의 법적용에 관한 고찰

        정신교 청주대학교 학술연구소 2005 淸大學術論集 Vol.5 No.-

        The rate of death from traffic accidents in Korea is shown to by far higher than that of OECD countries, which results in the tremendous economic cost. This increase in road traffic crimes inflicts a great burden on our society and the criminal judicial system. To prevent road traffic crimes, government is making efforts to maintain a traffic order and prevent the traffic accident through all sorts of laws and systems. There are two conflicting views on the treatment and punishment of those road traffic crimes. The first view is that the unlawful act of simple order violation or the act of negligence should be lightly punished in that it may occur to anyone. The other view is the principle of strict punishment that those violating traffic-related crimes should be strictly punished to maintain the traffic order and prevent traffic accidents. That is, the principle of strict punishment for road traffic crimes is needed to inhibit and prevent them effectively. These two views compared, it is thought that the dual system should be operated that the violative act of the traffic order and the violative act of road traffic laws and regulations due to simple negligence should go be non-criminalized or non-punished on the one hand and gross negligence or road traffic crimes causing serious physical damages should be strictly punished through active legal application.

      • 감자의 熱風乾燥

        崔鍾旭,鄭信敎,黃鉉周 경북대학교 산업기술연구소 1987 産業技術硏究誌 Vol.15 No.-

        This study was performed to examine the drying characteristics of the potato at various drying conditions. The eqilibrium moisture content was in the range of 0.058-0.207 g/g. The critical moisture content and diffusion coefficient were in the range of 3.151-4.210 g/g, 0.622 × 10 exp (-5)㎝/sec respectively. Comparing with other food stuffs, the activation energy (6.0 ㎉/㏖) of the potato appeared low. The drying curve equation and the drying rate equation were obtained as follows: Y=4.34×e^-0.553t dy/dt= -2.40×e^-0.553t When the initial moisture content of the potato is known, this equation can be used to predict the drying rate of the potato.

      • 切斷菜蔬의 短期貯藏시 包裝條件이 品質에 미치는 影響

        崔鍾旭,鄭信敎,金由美 慶北大學校 1991 論文集 Vol.51 No.-

        To study the optimum packing conditions of shredded vegetables, we investigated the changes of gas contents and nutritional components of the PK film packed shredded pimentoes (Capsicum annum L.). 1. The contents of CO_2 in LDPE 0.04 ㎜ was more higher than any other treatments. In the relationship of the contents of CO_2 and the storaging days, we obtained the following regression model equation of predicting the CO_2 contents. CO_2(%)=a+bW+cY^2+d log Y+e log X …… (1) CO_2(%)=a+bW+cY^2+d Y+eW^2+fX …… (2) Where. W : Thickness of shredded Pimentoes Y : Day of storage X : Weight of shredded Pimentoes 2. The rate of weight loss was observed just slightly during storage, but the contents of Vitamin C and reducing sugar were reduced sharply after 2 days storage. On the appearance test. the shredded pimentoes packed HDPK 0.02 ㎜ were comparatively better than any other treatments. 3. The Correlation between volume and weight of shredded pimentoes packed PK film were explained as follow; Vs=0.26 × Vm …… (3) X=(1/1.08) × Vs …… (4) Where. Vs : Volume of shredded Pimentoes Vm : Total volume X : Weight of shredded Pimentoes

      • 감의 脫澁處理中 Pectin 含量과 Texture의 變化

        崔鍾旭,孫泰華,鄭信敎,李吉雨,姜峻洙 慶北大學校 1989 論文集 Vol.47 No.-

        This experiment was made to investigate the changes of the contents of acetaldehyde, alcohol, tannin, and to study the texture changes of persimmon in relation to the contents of pection during the removal of astringency by CO_2. 1. During the removal of astringency of persimmon fruits, the contents of soluble tannin showed the rapid decrease in high concentration of CO_2, but the contents of ethanol and acetaldehyde showed the rapid increase in all treatments. 2. The contents of W.S.P. increased, but H.S.P. decreased in all treatments. 3. All texture paramenters of persimmon fruits except springness and adhesiveness were decreased druing the removal of astringency. 4. The contents of W.S.P. were good correlated with the changes of hardness in all treatments.

      • 화학발광(Chemiluminescence)법을 이용한 식품 오염 미생물의 측정

        김윤미,이혜련,정신교 경북대학교 농업과학기술연구소 2006 慶北大農學誌 Vol.24 No.-

        Ultraweak photons could be emitted from the chemical reaction without any electromagnetic radient. These chemiluminescence could be detected by highly sensible photomultiplier recently. We will introduce the principal of chemiluminescence generation reaction, and the application studies in the determination of food-borne microorganisms in field. The counts of surface contaminated microorganism in mackeral and chicken for cold storage determined by ATP-chemiluminescence method had good correlation with the counts by standard agar plate method. However, there was little correlation between 2 methods in ginseng powder whose microbial counts were lower than 10,000 CFU.

      • SCIESCOPUSKCI등재

        Effect of Platelet-Rich Fibrin on Repair of Defect in the Articular Disc in Rabbit Temporomandibular Joint by Platelet-Rich Fibrin

        ( Hyun Su Baek ),( Hye Sung Lee ),( Bok Joo Kim ),( In Kyo Chung ),( Chul Hoon Kim ),( Sun Mi Jin ),( Hie Sung Hwang ),( Sang Hun Shin2 ) 한국조직공학·재생의학회 2011 조직공학과 재생의학 Vol.8 No.6

        The objective of this study was to evaluate platelet-rich fibrin (PRF)’s effectiveness in repairing articular disc defect in the temporomandibular joint (TMJ) of rabbits. Eight rabbits were divided into four groups of two rabbits each, corresponding to groups A, B, C, and D. Both TMJs of all of the rabbits were used in the experiments: the right joints comprised the experimental groups, and the left ones, the control groups. The disc defect was circular and 2 mm in diameter. In the experimental groups, the PRF was compressed into the defect, whereas the control group defects were left untreated. A, B, C, and D groups were sacrificed at the 1st, 2nd, 4th and 6th weeks, respectively. The defects of each control group exhibited no specific changes. Contrastingly, in each experimental group, there was an increased number of chondroblasts at the margins of the defects, along with accelerated cell differentiation and a columnar cell arrangement observable at the time of cell differentiation. The experimental groups showed inflammatory cell infiltrations and fibrosis by the 1st week, maturation of chondrocytes by the 2nd week, and proliferation by the 4th week, after which the defects began to be filled with chondrocytes, a process that was complete after the 6th week. In the histological evaluation (H-E), the experimental groups showed significant increases of chondroblasts after the 2nd and 4th weeks, as well as regular columns of chondrocyte arrays observable during cell division. After 6 weeks, the defects were filled with chondrocytes.

      • SCIESCOPUSKCI등재
      • SCOPUSKCI등재

        Characteristics of Occupational Exposure to Benzene during Turnaround in the Petrochemical Industries

        Chung, Eun-Kyo,Shin, Jung-Ah,Lee, Byung-Kyu,Kwon, Ji-Woon,Lee, Na-Roo,Chung, Kwang-Jae,Lee, Jong-Han,Lee, In-Seop,Kang, Seong-Kyu,Jang, Jae-Kil Occupational Safety and Health Research Institute 2010 Safety and health at work Vol.1 No.1

        Objectives: The level of benzene exposure in the petrochemical industry during regular operation has been well established, but not in turnaround (TA), where high exposure may occur. In this study, the characteristics of occupational exposure to benzene during TA in the petrochemical companies were investigated in order to determine the best management strategies and improve the working environment. This was accomplished by evaluating the exposure level for the workers working in environments where benzene was being produced or used as an ingredient during the unit process. Methods: From 2003 to 2008, a total of 705 workers in three petrochemical companies in Korea were studied. Long- and short-term (< 1 hr) samples were taken during TAs. TA was classified into three stages: shut-down, maintenance and start-up. All works were classified into 12 occupation categories. Results: The long-term geometric mean (GM) benzene exposure level was 0.025 (5.82) ppm (0.005-42.120 ppm) and the short-term exposure concentration during TA was 0.020 (17.42) ppm (0.005-61.855 ppm). The proportions of TA samples exceeding the time-weighted average, occupational exposure level (TWA-OEL in Korea, 1 ppm) and the short-term exposure limit (STEL-OEL, 5 ppm) were 4.1% (20 samples of 488) and 6.0% (13 samples of 217), respectively. The results for the benzene exposure levels and the rates of exceeding the OEL were both statistically significant (p < 0.05). Among the 12 job categories of petrochemical workers, mechanical engineers, plumbers, welders, fieldman and scaffolding workers exhibited long-term samples that exceeded the OEL of benzene, and the rate of exceeding the OEL was statistically significant for the first two occupations (p < 0.05). Conclusion: These findings suggest that the periodic work environment must be assessed during non-routine works such as TA.

      • KCI등재

        Evaluation of Autochthonous BOD caused by Production of Algae at Different Spatial and Temporal Scales in the Eutrophic Nakdong River

        Shin, Sung Kyo,Song, Kyo Ook,Park, Chung Kil 한국물환경학회 2000 한국물환경학회지 Vol.16 No.3

        부영양화된 수역의 수질관리를 위해서는 특정수역에 유입B0D와 자생BOD가 어느 정도 기여하는 가를 정량적으로 파악한 후, 기여도에 따라 오염원인 물질을 줄이기 위한 수질관리 방안이 설정되어야 한다. 식물플랑크톤이 상당량 포함된 시수에 대해서는 B0D실험 중 소모되는 산소의 양에는 식물플랑크톤의 호흡작용에 의한 산소 소모와 활성을 잃은 식물플랑크톤의 미생물 분해에 의한 산소 소모가 포함되어 BOD농도로 나타날 것이다. 따라서 본 연구에서는 낙동강 중·하류역에서 현장 조사결과와 실내 식물플랑크톤 배양 및 분해실험을 통하여 식물플랑크톤의 현존량과 자생BOD와의 정량적인 관계를 도출하였다. 이상의 결과로부터 chl-a를 이용 자생BOD를 구한 관계식은 총BOD = α·chl-a+ 유입 BOD로의 표현이 가능하였으며, 이때 chl-a의 자생BOD 전환계수 α는 0.0245∼0.0550㎎ BOD/㎍Chl.a였고, 지역별 총 BOD중 자생 BOD가 차지하는 비율은 31.7∼52.7%로 나타났다. The relationships between of the organic constituents were investigated at laboratory scale and by field study to determine the autochthonous BOD resulting from algal production in the eutrophic Nakdong River, Korea. From the results of growth and degradation of algae in laboratory, the ratio of particulate biochemical oxygen demand (PBOD) to particulate organic matter (POM) was 0.349 during culture and 0.213 during degradation, and it was 28.1% and 17.1% of theoretical oxidation ratio (1.244), respectively. This means that the consumption of dissolved oxygen (DO) was caused by algal respiration and detrital degradation during culture, but only by detrital degradation during degradation. From the relationship between chl-a and BOD (Total BOD (TBOD) = autochthonous BOD ( α·chl-a) + allochthonous BOD), we could determine the contribution of autochthonous BOD to total BOD. Autochthonous BOD ranged from 31.7 to 52.5% in the river reach and from 36.2 to 56.9% in each season. To apply a conversion factor for the calculation of autochthonous BOD, the algal biomass produced should be considered, as well as the activity of the algae, which changed with temporal and spatial conditions. From these results, the autochthonous BOD determined in the Nakdong River accounted for the majority of total BOD in the overall reach investigated.

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