• Title/Summary/Keyword: 한계검사

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Development of Analytical methods for Chinomethionat in Livestock Products (축산물 중 살균제 Chinomethionat의 개별 잔류분석법 확립)

  • Yang, Seung-Hyun;Kim, Jeong-Han;Choi, Hoon
    • Korean Journal of Environmental Agriculture
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    • v.40 no.2
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    • pp.134-141
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    • 2021
  • BACKGROUND: The analytical method was established for determination of fungicide chinomethionat in several animal commodities using gas chromatography (GC) coupled with electron capture detector (ECD). METHODS AND RESULTS: In order to verify the applicability, the method was optimized for determining chinomethonat in various livestock products including beef, pork, chicken, milk and egg. Chinomethionat residual was extracted using acetone/dichloromethane(9/1, v/v) with magnesium sulfate and sodium chloride (salting outassociated liquid-liquid extraction). The extract was diluted by direct partitioning into dichloromethane to remove polar co-extractives in the aqueous phase. The extract was finally purified with optimized silica gel 10 g. CONCLUSION: The method limit of quantitation (MLOQ) was 0.02 mg/kg, which was in accordance with the maximum residue level (MRL) of chinomathionate as 0.05 mg/kg in livestock product. Recovery tests were carried out at two levels of concentration (MLOQ, 10 MLOQ) and resulted in good recoveries (84.8~103.0%). Reproducibilities were obtained (Coefficient of variation <5.2%), and the linearity of calibration curves were reasonable (r2>0.995) in the range of 0.01-0.2 ㎍/mL. This established analytical method was fully validated and could be useful for quantification of chinomathionat in animal commodities as official analytical method.

Accuracy Analysis for Slope Movement Characterization by comparing the Data from Real-time Measurement Device and 3D Model Value with Drone based Photogrammetry (도로비탈면 상시계측 실측치와 드론 사진측량에 의한 3D 모델값의 정확도 비교분석)

  • CHO, Han-Kwang;CHANG, Ki-Tae;HONG, Seong-Jin;HONG, Goo-Pyo;KIM, Sang-Hwan;KWON, Se-Ho
    • Journal of the Korean Association of Geographic Information Studies
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    • v.23 no.4
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    • pp.234-252
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    • 2020
  • This paper is to verify the effectiveness of 'Hybrid Disaster Management Strategy' that integrates 'RTM(Real-time Monitoring) based On-line' and 'UAV based Off-line' system. For landslide prone area where sensors were installed, the conventional way of risk management so far has entirely relied on RTM data collected from the field through the instrumentation devices. But it's not enough due to the limitation of'Pin-point sensor'which tend to provide with only the localized information where sensors have stayed fixed. It lacks, therefore, the whole picture to be grasped. In this paper, utilizing 'Digital Photogrammetry Software Pix4D', the possibility of inference for the deformation of ungauged area has been reviewed. For this purpose, actual measurement data from RTM were compared with the estimated value from 3D point cloud outcome by UAV, and the consequent results has shown very accurate in terms of RMSE.

Research on Improving Quality Management for Underground Space Integration Map - Focusing on pipe-type underground facilities - (지하공간통합지도 품질관리 개선방안 연구 - 관로형 지하시설물을 중심으로 -)

  • Bae, Sang-Keun;Kim, Sang-Min;Yoo, Eun-Jin
    • Journal of Cadastre & Land InformatiX
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    • v.50 no.2
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    • pp.221-235
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    • 2020
  • The development and utilization of underground spaces are increasing as the use of land based on ground surface became limited due to rapid urbanization triggered by population growth and industrialization. Despite its merit of efficient use of limited land and space, it may contribute to occurrence of various disasters such as sinkholes and damage to underground facilities. After the sinkholes formed and occurred across the country in 2014, there has been an effort to establish Underground Space Integration Map containing 15 types of underground information. Still, there is an increasing demand to improve the quality of underground information stemmed from continuation of such events including the rupture of the hot water pipe in Goyang-si and the fire in the KT site in Ahyeon-dong, Seoul. Hereby, with the aim to improve the quality of Underground Space Integration Map, this study analyzes quality standards, regulations, and guidelines related to spatial data to improve quality inspection standards and methods included in the production rules for the Underground Space Integration Map. In particular, it suggests improvement plan for data quality management for pipe-type underground facilities, known as lifelines, which are essential part of daily life of the citizens, and the largest cause for accidents according to 15 types of underground information managed through the Underground Space Integration Map.

Psychological Characteristics of Suicide Attempters with Major Depressive Disorder using the Minnesota Multiphasic Personality Inventory-2 Restructured Form (다면적 인성검사 II 재구성판으로 살펴본 주요우울장애 자살 시도자의 심리적 특성)

  • Choi, Ji-Hyun;Park, Eun-Hee
    • Korean Journal of Psychosomatic Medicine
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    • v.29 no.1
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    • pp.1-10
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    • 2021
  • Objectives : This study was conducted to investigate differences in psychological characteristics between major depressive disorder (MDD) patients with and without suicide attempt using MMPI-2-RF. Methods : Subjects were 107 MDD patients who had visited the department of psychiatry of hallym university hospital and met the DSM-IV diagnostic criteria of MDD by the korean version of MINI-Plus 5.0.0. The patients were divided into suicidal attempters (n=43) and non-suicidal attempters (n=64) using C-SSRS. The one-way ANOVA was used to compare MMPI-2-RF scale scores between two groups. Additionally, ANCOVA was conducted considering the severity of depressive symptom and comorbidity as covariate. Results : Our results showed that Suicide/Death Ideation (SUI), Inefficacy (NFC) and Interpersonal Passivity (IPP) scales were significantly higher in the MDD patients with suicidal attempt compared to MDD patients without suicidal attempt (p<0.05). However, after controlling for the severity of depressive symptom and comorbidity, SUI scale showed a significant tendency (p<0.10). Conclusions : The result suggests that MMPI-2-RF scales could be a useful tool for identifying patients transitioning to actual suicidal attempts in the moderate or severe major depressive disorder group. Limitations of this study and directions for further research are also discussed.

Determination of fluorine in Krill oils by combustion-ion chromatography (연소-이온크로마토그래프를 이용한 크릴오일 중 불소 시험법)

  • Jung, Jaehak;Kim, Soobin;Chu, Euisung;Joung, Joungmoo
    • Analytical Science and Technology
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    • v.33 no.6
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    • pp.262-273
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    • 2020
  • A fluorine content analysis method for krill oils, which is a representative oil formulation in foods, was developed in compliance with the Korea Food and Drug Ministry's "Guidelines for Validation of Testing Methods Related to Food". Using this method for krill oils, the presence of impurities was evaluated via combustion-ion chromatography (C-IC). A review of published technical data on fluorine in krill oils showed that while the traditional wet potentiometric method was typically used, it was not reliable. Moreover, there was no food testing/analysis laboratory in Korea to perform a fluorine test analysis on such an oil matrix. Therefore, we identified halogen (fluorine) tests, developed to national and international standards, and developed a test method suitable for krill oils by selecting a C-IC method that is sufficiently applicable to the oil matrix. Based on the characteristics of the oil matrix, the optimal test method was established through various experiments by reviewing the concerns related to loss and interference in the preparation and introduction of samples. The fluorine content test was carried out on 11 krill oil products that were purchased online. Most products (with the exception of only one) were found to contain less than the reporting limit obtained by the test method. Furthermore, after additional testing, a high fluorine content of approximately 2,000 ~ 3,000 mg/kg was detected on the krill surface, although the concentration varied depending on the area of the krill. A comparison with samples from two ISO/IEC 17025 testing laboratories confirmed that there was no significant difference in the statistical analysis results obtained by ANOVA among the three laboratories. A testing guide for fluorine content analysis was completed.

Study on Pattern of Civil Service Crimes and Control Plan : Focused on the Prosecutor's Office and High ranking Public Officials Crime Investigation Office (공무원 범죄의 유형과 통제방안 -검찰과 고위 공직자범죄수사처를 중심으로)

  • Kim, Taek
    • The Journal of the Convergence on Culture Technology
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    • v.7 no.3
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    • pp.59-69
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    • 2021
  • The Moon Jae-in administration insisted on reforming the prosecution for the reform of power institutions, and also tried to control the power of the prosecution through the establishment of a high-ranking public officials criminal investigation office. Then, what is the direction of the legal prosecution reform? Above all, it is a logic to drastically reduce the power of the prosecution. How to shrink it? First, it is necessary to control or check the power of prosecution and investigation that the prosecution has. Second, the key to the reform of the prosecution is perhaps to separate personnel rights from power. In order to exclude external pressure from the prosecution's personnel rights, there must be no instruction or intervention from the attorney general. To do this, the prosecutor general must go through various personnel evaluations, such as multi-faceted evaluation. Third, the essence of the High-ranking Officials Criminal Investigations Act is to deal with crimes of prosecutors, judges, police, and members of the National Assembly. It is also the core of the institutional mechanism to cover the corruption of one's family members while holding all the right to investigate, prosecution, and warrant claims, and to check the omnipresent prosecutors who have abused their right to investigate for political purposes. Then, what is necessary for the success of the high-ranking officials criminal investigation office? Above all, We think political neutrality is very necessary. The Ministry of Airborne has a very high authority of the Director. This paper intends to examine the functions and roles of the prosecution and high-ranking officials criminal investigation offices to prevent corruption. We analyzed the contents of the prosecution and the public officials criminal investigation office, and examined the limitations and problems, and the measures to control corruption in public offices.

Development of a Building Safety Grade Calculation DNN Model based on Exterior Inspection Status Evaluation Data (건축물 안전등급 산출을 위한 외관 조사 상태 평가 데이터 기반 DNN 모델 구축)

  • Lee, Jae-Min;Kim, Sangyong;Kim, Seungho
    • Journal of the Korea Institute of Building Construction
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    • v.21 no.6
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    • pp.665-676
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    • 2021
  • As the number of deteriorated buildings increases, the importance of safety diagnosis and maintenance of buildings has been rising. Existing visual investigations and building safety diagnosis objectivity and reliability are poor due to their reliance on the subjective judgment of the examiner. Therefore, this study presented the limitations of the previously conducted appearance investigation and proposed 3D Point Cloud data to increase the accuracy of existing detailed inspection data. In addition, this study conducted a calculation of an objective building safety grade using a Deep-Neural Network(DNN) structure. The DNN structure is generated using the existing detailed inspection data and precise safety diagnosis data, and the safety grade is calculated after applying the state evaluation data obtained using a 3D Point Cloud model. This proposed process was applied to 10 deteriorated buildings through the case study, and achieved a time reduction of about 50% compared to a conventional manual safety diagnosis based on the same building area. Subsequently, in this study, the accuracy of the safety grade calculation process was verified by comparing the safety grade result value with the existing value, and a DNN with a high accuracy of about 90% was constructed. This is expected to improve economic feasibility in the future by increasing the reliability of calculated safety ratings of old buildings, saving money and time compared to existing technologies.

Traumatic Bone Cyst in the Mandibular Symphysis : Case Reports (하악 결합 부위에 발생한 외상성 골낭 : 증례보고)

  • Sung, Minah;Lee, Nanyoung;Lee, Sangho;Jih, Myeongkwan
    • Journal of the korean academy of Pediatric Dentistry
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    • v.48 no.4
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    • pp.476-483
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    • 2021
  • Traumatic bone cyst (TBC) is an asymptomatic lesion seen most in adolescents. TBC is found incidentally on routine panoramic examinations and appears as a relatively well-demarcated unilocular radiolucency with scalloped margins. Histological examination reveals a vacant cavity of cancellous bone usually unlined or very occasionally lined with a thin connective tissue layer. The lack of lining epithelial membrane is common histological feature. The most affected site is between the mandibular canine and third molar. The involvement of the mandibular symphysis is rare. The etiopathogenesis of the TBC is unclear. TBC is treated with surgical exploration and curettage; new bone is formed in place of the lesion within 6 - 12 months of surgery. Diagnosis of TBC prior to surgical intervention has limitations in most of the cases. Both of our patients were diagnosed through radiological examination and biopsy. Neither patient had a history of trauma. After surgery, the panoramic radiograph and CBCT were used to confirm bone healing.

Study of Spectral Doppler Waveform Interpretation and Nomenclature in Peripheral Artery (말초 동맥 분광 도플러 파형 해석 및 명명법에 대한 고찰)

  • Ji, Myeong-Hoon;Seoung, Youl-Hun
    • Journal of the Korean Society of Radiology
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    • v.16 no.5
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    • pp.649-660
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    • 2022
  • In 1959, Satomura used spectral Doppler ultrasound to express the velocity of red blood cells according to time change, and Kato defined a zero-base line that could tell the direction of blood flow, making it possible to know the direction of blood flow. This became the basis for the widely used classifications of Triphasic, Biphasic, and Monophasic. However, the above classification has limitations that confuse users with the meaning and timing of use in a clinical environment. As a result, the American Society for Vascular Medicine (SVM) and the Society for Vascular Ultrasound (SVU) A consensus document on Doppler waveform analysis was declared by the joint committee. This study tried to review this consensus and to suggest nomenclature and modifiers that can be used in the domestic vascular ultrasound clinical field. The joint committee formed by SVM and SVU recommended that the use of the triphasic waveform and the biphasic waveform be used as a multiphasic waveform rather than being used due to the ambiguity of interpretation. In addition, it was agreed to name the hybrid-type waveform, which is a monophasic and high-resistance waveform, which has always been a problem of interpretation in a clinical environment, as an intermediate resistive waveform. In addition, in order to increase the communication efficiency between the interpreter and the sonographer, waveform analysis was classified into a main descriptor and a modifier, and it was recommended to use a single nomenclature by unifying various synonyms. It is expected that this literature review will provide accurate arterial spectral Doppler waveform interpretation and an agreed-upon nomenclature to radiologists performing vascular ultrasound examination in clinical practice, and will be utilized as basic data that can contribute to the improvement of public health.

A Study on Process Safety System Analysis for Application Process Safety Performance Indicators (공정안전성과지표 적용을 위한 공정안전시스템 분석방안 연구)

  • Ko, Byung Seok;Lim, Dong-Hui;Kim, Min-Seop;Seol, Ji Woo;Yoo, Byung Tae;Ko, Jae-Wook
    • Journal of the Korean Institute of Gas
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    • v.26 no.2
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    • pp.27-38
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    • 2022
  • In developed countries, the number of accidents has significantly decreased with the introduction of the process safety management system, but it has a regulatory nature and it is difficult to show the actual situation of workplace safety management. Many organizations recommend the use of process safety performance indicators to comprehensively monitor process safety status. In this study, for the application of process safety performance indicators, the related guidelines were compared and analyzed, and the method of using the process safety system of the workplace as an indicator was reviewed. In literature indicators, compliance with procedures is mainly checked, whereas in system-based indicators, procedures or inspections for a specific purpose of the safety system can be clearly identified, and the operation status can be measured and monitored. It can be seen that this characteristic is more advantageous in terms of the clarity of the supplements derived in operating safety management activities. Using this, it is possible to effectively show the level of safety management in the workplace.