• Title/Summary/Keyword: industrial safety

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Classification of submitted KSNMT dissertation (대한핵의학기술학회 투고 논문 분류)

  • Han, Dong-Chan;Lee, Hyuk;Hong, Gun-Chul;Ahn, Byeong-Ho;Choi, Seong-Wook
    • The Korean Journal of Nuclear Medicine Technology
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    • v.21 no.1
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    • pp.65-69
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    • 2017
  • Purpose KSNMT(Korea Society of Nuclear Medicine Technology) stepping first step in 1997, has published first journal related with nuclear medicine technology in 1985. With classifying In Vivo Session Dissertation reported in the entire journal, trend of the Dissertation will be studied. Materials and Methods Dissertations which published from 1985 to first half of 2016 in the journal are classified with presentation form and with scanner, And all the data is organized with Excel program. Through the data, the number of dissertations published in each year, the number of dissertation published in details, and keyword distributions in each period are analyzed. Results The number of In-vivo section dissertations was 1151 and the number of In-vivo section dissertations that have common subject with In-vitro section was 28. The number of In-vivo section dissertation in 1980s was 46, in 1990s was 149, in 2000 was 467 and from 2010 to the first half of 2016 was 517. The number of dissertation with original articles was 571, with abstract was 529, with symposium was 31, with special lecture was 25, with review was 11, with interesting image was 7, with poster was 3 and with case report was 2. With symposium and special lecture excluded, which count 56, the number of dissertation with PET was 319, with Planar was 302, with SPECT was 172, with radiopharmaceutical was 113, with guard and safety management 103, with BMD was 28, etc. was 86. The number of dissertation about oncology was 201, about scanner was 179, about cardiovascular and circulatory system was 102, about safe environment was 82, about musculoskeletal system was 76, about nervous nuclear medicine was 66, about quality assurance was 61, about genitourinary system was 56, about endocrine system was 49, about digestive system was 44, about Therapy, about industrial safety was 24, about molecular imaging was 15, infection and inflammation was 9, about respiratory system was 8 and etc. was 108. The mostly used keyword through 1999 to 2005 was PET and through 2006 to 2016 was PET/CT. Conclusion To encourage various dissertations to be submitted, Korea Society of Nuclear Medicine should analyze date about not only about dissertations that are already published, but also about various research materials. Moreover, Korea Society of Nuclear Medicine also have to provide technical support such as sharing big data from homepage and systematical support to its member to publish dissertation that has high impact factor. It is important each individual researcher to have continuing effort as well as each organization cooperation.

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Physicochemical Characteristics of Traditional Fermented Soybean Products Manufactured in Folk Villages of Sunchang Region (순창 고추장민속마을에서 생산한 전통 장류의 이화학적 특성)

  • Kim, Jong-Wook;Kim, Yong-Suk;Jeong, Pyeong-Hwa;Kim, Hyung-Eun;Shin, Dong-Hwa
    • Journal of Food Hygiene and Safety
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    • v.21 no.4
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    • pp.223-230
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    • 2006
  • For standardization of quality of traditional fermented soybean products manufactured in Folk Villages of Sunchang Region, the physicochemical characteristics of 28 Kochujang, 28 Doenjang, and 18 Chunggukjang were compared. Moisture contents of Kochujang, Doenjang, and Chunggukjang were $46.9{\pm}3.6,\;60.6{\pm}1.9,\;and\;57.0{\pm}3.10%$, respectively. On the basis of average moisture contents, crude protein, crude fat, and crude ash contents were calculated to $6.2{\pm}0.7,\;2.0{\pm}0.5,\;and\;8.2{\pm}1.1%$ in Kochujang, $13.2{\pm}1.0,\;7.1{\pm}0.6,\;and\;15.2{\pm}1.5%$ in Doenjang, and $18.9{\pm}1.2,\;6.1{\pm}1.4,\;and\;5.1{\pm}1.7%$ in Chunggukjang, respectively. Reducing sugar, salinity, and water activities in Kochujang were $19.25{\pm}4.1%,\;7.3{\pm}1.1%,\;and\;0.790{\pm}0.003$, in Doenjang were $2.38{\pm}0.89%,\;14.2{\pm}1.4%,\;and\;0.835{\pm}0.020$, and in Chunggukjang were $0.51{\pm}0.24%,\;4.2{\pm}1.6%,\;and\;0.962{\pm}0.028$, respectively. Amino-type nitrogen contents, which affects delicate flavors of fermented soybean products, of Kochujang, Doenjang, and Chunggukjang were $114.03{\pm}19.04,\;734.32{\pm}147.70,\;and\;600{\pm}150mg%$, respectively. Lightness (l), redness (a), and yellowness (b) values in color of Kochujang were $14.49{\pm}1.44,\;15.45{\pm}1.77,\;and\;8.34{\pm}1.02$, respectively, and the redness was lower than that of other ones. Those of Doenjang were $26.69{\pm}4.33,\;7.25{\pm}1.03,\;and\;12.02{\pm}1.82$, respectively, and those of Chunggukjang were $35.62{\pm}2.05,\;6.31{\pm}0.37,\;and\;13.50{\pm}0.78$, respectively. These results indicate that the salt concentration and quality of traditional fermented soybean products manufactured in Folk Villages of Sunchang region must be lowered and standardized, respectively.

Bactericidal Efficacy of a Fumigation Disinfectant with Ortho-phenylphenol as an Active Ingredient Against Pseudomonas Aeruginosa and Enterococcus Hirae (Ortho-phenylphenol을 주성분을 하는 훈증소독제의 Pseudomonas aeruginosa와 Enterococcus hirae에 대한 살균효과)

  • Cha, Chun-Nam;Park, Eun-Kee;Kim, Yongpal;Yu, Eun-Ah;Yoo, Chang-Yeol;Hong, Il-Hwa;Kim, Suk;Lee, Hu-Jang
    • Journal of Food Hygiene and Safety
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    • v.29 no.1
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    • pp.60-66
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    • 2014
  • This test was performed to evaluate the bactericidal efficacy of a fumigation disinfectant containing 20% ortho-phenylphenol against Pseudomonas aeruginosa (P. aeruginosa) and Enterococcus hirae (E. hirae). In preliminary tests, P. aeruginosa and E. hirae working culture suspension number (N value) were $2.8{\times}10^8$ and $4.0{\times}10^8CFU/mL$, respectively. And all the colony numbers on the carriers exposed to the fumigant (n1, n2, n3) were higher than 0.5N1 (the number of bacterial test suspentions by pour plate method), 0.5N2 (the number of bacterial test suspentions by filter membrane method) and 0.5N1, respectively. In addition, the mean number of P. aeruginosa and E. hirae recovered on the control-carriers (T value) was $2.8{\times}10^8$ and $3.4{\times}10^6CFU/mL$, respectively. In the bactericidal effect of the fumigant, the reduction number of $2.8{\times}10^8$ (d value) was 6.46 and 5.19 logCFU/mL, respectively. According to the French standard for the fumigant, the d value for the effective bactericidal fumigant should be over than 5 logCFU/mL. With the results from this study, the fumigation disinfectant containing 20% ortho-phenylphenol has an effective bactericidal activity, then the fumigant can be applied to disinfect food materials and kitchen appliances contaminated with the pathogenic bacteria.

Analysis of Structural Safety of the Welded Pipe Columns Adopted in Paprika Greenhouse (파프리카 재배용 온실에서 용접 파이프 기둥재의 구조적 안전성 검토)

  • Suh, Won-Myung;Choi, Man-Kwon;Im, Jae-Un;Kwon, Sun-Ju;Kim, Hyeon-Tae;Kim, Young-Ju;Yoon, Yong-Cheol
    • Journal of agriculture & life science
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    • v.45 no.2
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    • pp.125-133
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    • 2011
  • This study was conducted on greenhouses whose side heights had been raised after the columns of 1-2W basic type greenhouses had been cut and welding with the same-sized pipes. When the wind load or snow load affects restructured pipe greenhouse like this, those parts will be structurally unsafe. To examine this, the bending strength of welded columns were measured through four stages and compared with the pipes in their original condition. Results are as follows. In the case of a bending test on welded joints about steel pipes used for greenhouses, satisfactory results couldn't be drawn because sections of both ends and the loading parts couldn't endure loads and sank regardless of loading methods. Partial problems could be solved by inserting inside pipe(steel bar) at the sections and the loading parts, but it was necessary to devise more satisfactory bending test methods. The strength of welded joints wasn't much different compared with original conditions and demonstrated only slight differences according to the sample production conditions. However, significant incompleteness in the welding process was expected to cause a decisive loss in strength. On the assumption that there were no problems in the welding process or with regard to the inclination of sub materials for columns after connection, it was deemed reasonable to assume that the strength of welded pipes was about 84~90% of the strength of the pipes in their original condition. Considering mid- and long-term strength decline following the onset of rust at joints or welding sections, structural changes in the main sub materials that are used for greenhouses at farmhouses have to be avoided to ensure structural safety, unless these changes are inevitable.

Effect of Gaseous Chlorine Dioxide on Sterilization in Industrial Food-holding Cabinets (이산화염소가스를 이용한 식품산업용 소독장에서의 살균효과)

  • Kim, Hyeon Jeong;Shin, Jiyoung;Kim, Ji-eun;Yang, Ji-young
    • Journal of Food Hygiene and Safety
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    • v.34 no.2
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    • pp.170-177
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    • 2019
  • The aim of this study was to investigate the effect of different concentrations of chlorine dioxide ($ClO_2$) on sterilization and deodorization of food-holding cabinets under different exposure times. For the measuring sterilization and deodorization, a 6.5 L chamber and a 625 L cabinet with circulation systems were used. Two bacteria (Staphylococcus aureus KCTC1916 and Escherichia coli KCTC 1682) that were artificially inoculated in the plate respectively were put into the 6.5 L chamber and the 625 L cabinet. The $ClO_2$ gas was produced by ampules. In the 6.5 L chamber, neither of the two bacteria was detected after 24 hours treatment by $ClO_2$ gas. Moreover, the deodorization rate against ammonia and phenol was 94% and 70%, respectively, but deodorization against formaldehyde was not effective. When the concentration reached maximum (6 ampule, 4.6 ppm) levels in the cabinet, it lasted for approximately 2 h and then decreased slowly. When a circulator was used, the gas concentration was very low (6 ampule, 0.8 ppm) and the antibacterial activity against S. aureus and E. coli was low. The level of reduction against S. aureus and E. coli was 2.98 log CFU/plate and 6.06 log CFU/plate, respectively, in the cabinet after 24 h without a circulator. The reduction against S. aureus KCTC1916 and E. coli KCTC1682 was 2.69 log CFU/plate and 4.41 log CFU/plate for 24 h, respectively.

Estimation of irrigation return flow from paddy fields on agricultural watersheds (농업유역의 논 관개 회귀수량 추정)

  • Kim, Ha-Young;Nam, Won-Ho;Mun, Young-Sik;An, Hyun-Uk;Kim, Jonggun;Shin, Yongchul;Do, Jong-Won;Lee, Kwang-Ya
    • Journal of Korea Water Resources Association
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    • v.55 no.1
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    • pp.1-10
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    • 2022
  • Irrigation water supplied to the paddy field is consumed in the amount of evapotranspiration, underground infiltration, and natural and artificial drainage from the paddy field. Irrigation return flow is defined as the excess of irrigation water that is not consumed by evapotranspiration and crop, and which returns to an aquifer by infiltration or drainage. The research on estimating the return flow play an important part in water circulation management of agricultural watershed. However, the return flow rate calculations are needs because the result of calculating return flow is different depending on irrigation channel water loss, analysis methods, and local characteristics. In this study, the irrigation return flow rate of agricultural watershed was estimated using the monitoring and SWMM (Storm Water Management Model) modeling from 2017 to 2020 for the Heungeop reservoir located in Wonju, Gangwon-do. SWMM modeling was performed by weather data and observation data, water of supply and drainage were estimated as the result of SWMM model analysis. The applicability of the SWMM model was verified using RMSE and R-square values. The result of analysis from 2017 to 2020, the average annual quick return flow rate was 53.1%. Based on these results, the analysis of water circulation characteristics can perform, it can be provided as basic data for integrated water management.

Comparison between Different Industrial GDPs to Understand the Importance of the Industry: Focusing on the Food, Medical & Drug Industry (산업별 GDP 중요도 비교 분석: 식의약 산업 부문 GDP를 중심으로)

  • Kim, Sohye;Kim, Jinmin;Kim, Jaeyoung;Kang, Byung-Goo
    • Knowledge Management Research
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    • v.22 no.4
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    • pp.103-118
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    • 2021
  • Gross Domestic Product(GDP) is affected by the economic power of each industry. Therefore, using statistical data related to the food and drug industry, we tried to determine the proportion of GDP and analyzed the impact of the food, medical & drug industry on the domestic economy through comparison with other industries. The food, medical & drug industry has a wide range of industries among domestic industries and is closely related to the lives of the people. In addition, human lifespan is increasing, and recently, due to the spread of an infectious disease called COVID-19, the bio sector belonging to the food, medical & drug industry is in the spotlight. Attention is needed to the industry as the competitiveness of the food, medical & drug industry is expected to increase. The Ministry of Food and Drug Safety provides statistics on the food, medical & drug industry, but does not provide a systematic share of GDP. Since it is difficult to determine how influential the industry is compared to other industries, this study attempts to obtain the share of GDP in the food, medical & drug industry and compare it with other industries. In the process of obtaining GDP in the food, medical & drug industry sector, there was a difficulty in that the figures in statistical data were not unified by time point. In order to overcome the limitations, statistical data as a standard are determined. The GDP of the Food, Medical & Drug Industry was estimated using total added value, production, sales, and added value by industry. Compared to other industries, the Food, Medical & Drug Industry's GDP ranked second after the GDP of the manufacturing industry. As a result, it suggests that the food, medical & drug industry has a great influence on the national economic power among domestic industries.

Analysis of the Relationship between the Flow Characteristics of the Tsushima Warm Current and Pacific Decadal Oscillation (대마난류의 유동 특성과 PDO의 관계 분석)

  • Seo, Ho-San;Chung, Yong-Hyun;Kim, Dong-Sun
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.28 no.6
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    • pp.882-889
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    • 2022
  • In this study, to understand the factors influencing the flow change the Tsushima Warm Current (TWC), the correlation between the volume transport the TWC, El Niño Southern Oscillation (ENSO), and Pacific Decadal Oscillation (PDO) was analyzed. A calculation of the monthly volume transport of TWC for 25 years (1993-2018) revealed that the seasonal fluctuation cycle was the largest in summer and smallest in winter. Power spectrum analysis to determine the periodicity of the TWC volume transport, Oceanic Niño Undex (ONI), and PDO indicated that the TWC volume transport peaked at a one year cycle, but ONI and PDO showed no clear cycle. Further, to understand the correlation between the TWC transport volume and ONI and PDO, the coherence estimation method was used for analysis. The coherence of ONI and PDO had a high mutual contribution in long-period fluctuations of three years or more but had low mutual contribution in short-period fluctuations within one year. However, the coherence value between the two factors of the TWC volume transport and PDO was 0.7 in the 0.8-1.2 year cycle, which had a high mutual contribution. Meanwhile, the TWC volume transport and PDO have an inverse correlation between period I (1993-2002) and period III (2010-2018). When the TWC maximum transport volume (2.2 Sv or more) was high, the PDO index showed a negative value below -1.0, and the PDO index showed a positive value when the TWC maximum transport volume was (below 2.2 Sv). Therefore, using long-term PDO index data, changes in the TWC transport volume and water temperature in the East Sea coastal area could be predicted.

Development of a smart cane concept for guiding the visually impaired - focused on design thinking learning practices for students - (시각장애인을 위한 길 안내용 스마트 지팡이 콘셉트 개발)

  • Park, Hae Rim;Lee, Min Sun;Yang, Ho Jung
    • Journal of Service Research and Studies
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    • v.13 no.1
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    • pp.186-200
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    • 2023
  • This study aims to improve the usability of the white cane, which is walking equipment that most local visually impaired people use and carry when going out, and to contribute to the prevention of safety accidents and the walking rights of visually impaired people by providing improvement and resolution measures for the problems identified. Also, this study is a study on the visually impaired, primarily targeting the 1st to 2nd degree visually impaired people, who cannot go out on their own without walking equipment such as a white cane, corresponding to 20% among approximately 250,000 blind and low vision people in the Korean population. In the study process, the concept has been developed from the user's point of view in order that the white cane becomes a real help in the walking step of the visually impaired and the improvement of usability of the white cane, the main walking equipment for the visually impaired, are done by problem identification through the Double Diamond Model of Design Thinking (Empathize → Define → Ideate → Prototype → Test (verify)). As a result of the investigation in the process of Empathy, a total of five issues was synthesized, including an increase in the proportion of the visually impaired people, an insufficient workforce situation to help all the visually impaired, an improvement and advancement of assistive devices essential for the visually impaired, problems of damage, illegal occupation, demolition, maintenance about braille blocks, making braille block paradigms for the visually impaired and for everyone. In Ideate and Prototype steps, situations derived from brainstorming were grouped and the relationship were made through the KJ method, and specific situations and major causes were organized to establish the direction of the concept. The derived solutions and major functions are defined in four categories, and representative situations requiring solutions and major functions are organized into two user scenarios. Ideas were visualized by arranging the virtual Persona and Customer Journey Map according to the situation and producing a prototype through 3D modeling. Finally, in the evaluation, the final concept derived is a device such a smart cane for guidance for the visually impaired as ① a smart cane emphasizing portability + ② compatibility with other electronic devices + ③ a product with safety and convenience.

Experimental Study on Energy Saving through FAN Airflow Control in the Generator Room of a 9200-ton Training Ship (9200톤급 실습선 발전기실 FAN 송풍유량 제어를 통한 선박에너지 절약에 관한 실험적 연구)

  • Moon-seok Choi;Chang-min Lee;Su-jeong Choe;Jae-jung Hur;Jae-Hyuk Choi
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.29 no.6
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    • pp.697-703
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    • 2023
  • As a part of the global industrial efforts to reduce environmental pollution owing to air pollution, regulations have been established by the International Maritime Organization (IMO). The IMO has implemented various regulations such as EEXI, EEDI, and CII to reduce air pollution emissions from ships. They are also promoting measures to decrease the power consumption in ships, aiming to conserve energy. Most of the power used in ships is consumed by electric motors. Among the motors installed on ships, the engine room blower that takes up a significant load, operates at a constant irrespective of demand. Therefore, energy savings can be expected through frequency control. In this study, we demonstrated the efficacy of energy savings by controlling the frequency of the electric motor of the generator blower that supplies combustion air to the generator's turbocharger. The system was modeled based on the output data of the turboharger outlet temperature in response to the blower frequency inpu. A PI control system was established to control the frequency with the target being the turbocharger outlet temperature. By maintaining the turbocharger design standard outlet temperature and controlling the blower frequency, we achieved an annual energy saving of 15,552kW in power consumption. The effectiveness of energy savings through frequency control of blower fans was verified during the summer (April to September) and winter (March to October) periods. Based on this, we achieved annual fuel cost savings of 6,091 thousand won and reduction of 8.5 tons of carbon dioxide, 2.4 kg of SOx, and 7.8 kg of NOx air pollutants on the training ship.