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- 저자 : 최충호 ( Choong Ho Choi ) (검색결과 80 건)
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하수처리장 방류수의 총인 제거를 위한 P-CAP 시스템에서 PDA 기법의 활용가능성에 대한 연구
최충호 ( Choong Ho Choi ),맹승규 ( Sung Kyu Maeng ),심재휘 ( Jae Hwi Sim ),최진호 ( Jin Ho Choi ),송경근 ( Kyung Guen Song ),이병하 ( Byung Ha Lee ),차호영 ( Ho Young Cha ) 한국물환경학회 2012 한국물환경학회지 Vol.28 No.5
Recently, to using chemical coagulation process for T-P removal in STP effluent as tertiary treatment process is generalized in the country. The importance of analysis technique to save the treatment & maintenance cost during coagulation process is becoming more increased each day. Thus, it is necessary for the analysis technique during coagulation process to be presented well the characteristic of coagulation in field apply. There are a few analysis techniques such as Jar Test, zeta potential analysis and streaming current detecting techniques. But there are difficult to apply in field immediately due to long test time and difficult analysis techniques. And using PDA technique, it is reviewed applicability of the techniques as field index on pilot plant of P-CAP system The P-CAP system is composed of an in-line static mixer, a Flocculation Tank and the CAP reactor with 2 stage weir for effluent. Pre-test is performed to fix the mixing velocity in the Flocculation Tank using the PDA equipment and it fixed with 30RPM. Also, Jar Test is performed to select optimum dose of each coagulant for each T-P concentration level of influent. Result of continuous test on pilot plant of P-CAP system, the FSI in the Flocculation Tank is increased consistently by increasing each dosing concentration of coagulant such as LAS and PAC in the low level influent T-P concentration comparatively. It is considered that formed Al-hydroxide complexes for dosed coagulant are caused FSI variation. Furthermore, it seems that FSI value in the high level influent T-P concentration appeared lower than the opposite influent condition relatively because it is formed simultaneously Al-hydroxide complexes as solid type and Al-phosphorus complexes as soluble type. Thus, relation of FSI by PDA technique and T-P removal of final effluent on pilot plant of P-CAP system are very limited for the kind of coagulant and the characteristics of influent. And it though that FSI value by PDA technique with analyzing of turbidity in Flocculation Tank will be used restrictedly on field as the relative field-index.
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최충호 ( Choong-ho Choi ) 대한예방치과·구강보건학회 2019 대한구강보건학회지 Vol.43 No.4
The General Conference of Korean Academy of Preventive Dentistry and Oral Health was held in October of this year with the theme of “Promising Vision and Strategy for Preventive Dentistry.” It provided an opportunity to reflect on the history of preventive dentistry and dream about the future based on the present. Advances associated with the Fourth Industrial Revolution can be consid ered one of the subjects that has drawn much recent interest and discussion with respect to the future of preventive dentistry. The Fourth Industrial Revolution refers to creating a hyper-connected society through the convergence of core technologies. It entails establishing a mutual communication system between production equipment and products through Internet of Things and optimizing the entire production process. It also entails creating a world of networks in which large quantities of information could be shared through convergence of technologies that blur the boundaries between different fields such as physics, biology, and digital technology, and through human-to-things and machine-to-machine connections. Core technologies such as 3D printing, artificial intelligence, big data, and virtual reality, which are the future technologies that represent the Fourth Industrial Revolution, are having a major impact on dentistry and will have even greater impact moving forward. Digital dentistry, which has undergone rapid ad vances in recent years, can be an example, in which current developments are for treatment purposes such as surgery and restora tion. However, in the future, I believe that core technologies of the Fourth Industrial Revolution will be useful for the development of preventive dentistry, including big data-based research on oral health using large quantities of data and oral health education using virtual reality. Therefore, I hope that researchers studying oral health will take an even greater interest in the Fourth Industrial Revolution and achieve more effective, efficient, and groundbreaking advancements by integrating the contents of current research with new tech nologies. Moreover, I am also hopeful that introduction and sharing of such new efforts and advancements through academic jour nals could provide the opportunities to gain synergistic effects.
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최충호(Choong-Ho Choi) 대한치과의사협회 2012 대한치과의사협회지 Vol.50 No.9
Bamboo salt is a special processed salt by Korean traditional recipe. Recent study results showed that bamboo salt or bamboo salt with some other materials like herbal extracts have the anti-microbial activity, inhibition effects of dental plaque and gingival inflammation. Bamboo salt also showed anti-cariogenic effects; remineralization and acid resistance. Compare to fluoride toothpaste, bomboo salt toothpaste with fluoride showed the more effective remineralization on inner part of the early dental caries lesion. It increased the surface hardness and decreased lesion depth of early dental caries lesion. Thus, it is suggested that bamboo salt could be used as a anti-microbial, anti-plaque, anti-inflammatory and anti-cariogenic material for oral disease prevention. Especially, bamboo salt dentifrice with fluoride can be recommanded as a useful remineralizing agent.
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최충호 ( Choong Ho Choi ) 대한예방치과·구강보건학회 2014 대한구강보건학회지 Vol.38 No.3
Our needs and desires change over time. Such changes encourage us to seek new directions and often lead us to shift our focus to something that has been previously overlooked. The dentistry is no exception. Currently, a new direction is called for in response to the changes in the industry atmosphere, such as diminishing demand due to the decreasing population, intensifying competition resulting from rising supply, and the decreasing prevalence of oral diseases. We have already recognized the limitations of traditional dental practice models, which relied heavily on the treatment of patients visiting the practice. Consequently, among dental practitioners today, interest is growing in dental practice that provides proactive care including maintenance, enhancement, and preventative treatment that promotes recovery in the beginning stages of a dental disease. Numerous researchers who recognized the importance of preventative care have already been presenting a wide range of studies on dental disease prevention and oral health maintenance through the Journal of Korean Academy of Oral Health. The results obtained through these studies will provide the foundational data that today’s Korean dentistry requires in its pursuit of innovation. Furthermore, considering the dentistry’s growing interest in and demand for preventative care, the role of the Journal of Korean Academy of Oral Health should be enhanced. One way to achieve this goal is to increase the share of review articles and case reports featured in the journal that address the key topic of preventative care, in addition to continued publishing of original articles. Doing so, we believe, will expand the dentistry’s scope of interest and needs. In order to further improve the role of the Journal of Korean Academy of Oral Health, it is of paramount importance that we continue our efforts to identify new changes and demands in the field and seek a new direction for its advancement.
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