Addition of V2O5-MnO2/USY-zeolite catalyst in PTFE fiber for bag filter and its catalytic activity tests for NH3-SCR at low-temperature

Jin Ho Boo,Eunseok Kim,Byung Chan Kwon,Myung Jo Seo,Ji Man Kim,Ji Bong Joo,Dohyung Kang,No-Kuk Park 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.123 No.-

This study investigated the catalytic activity of vanadium-manganese supported on USY-zeolite as a catalystfor low-temperature NO removal, and embedded the powder catalyst in PTFE filter of bag filter. TheV2O5-MnO2/USY-zeolite catalyst was prepared using the co-impregnation method, and the V2O5/MnO2ratio was 0/10, 2.5/7.5, 5/5, 7.5/2.5, or 10/0. The catalytic activity test for NH3-SCR(selective catalyticreduction) of NO was performed at 150–230 C. An enhanced NO conversion above 60% was exhibitedin the low-temperature region below 230 C, and the NO removal efficiency increased as the MnO2 contentincreased. The NH3-TPD and NO-TPD(Temperature Programmed Desorption) analysis confirmed thatthe NH3 adsorption of the catalyst more significantly influences the NO removal performance than the NOadsorption. As the MnO2 content on the catalysts increased, the strength and amount of adsorbed NH3increased, resulting in enhanced NO conversion. The catalyst-embedded PTFE (polytetrafluoroethylene)fiber was prepared by extruding physically mixed PTFE and catalyst powder. Scanning electron microscopy/energy dispersive X-ray spectroscopy confirmed that the catalyst was well dispersed on the surfaceand inside the PTFE fiber. The NO removal performance of the catalyst included PTFE fiber increased asthe amount of the catalysts added was increased.

머리염색이 인체에 미치는 영향

윤형식,황성호,이현륭,김수호,박연석,권낙현,정호진,김동훈,노현주,홍성호,박병찬,이관,정해관 東國大學校醫學硏究所 2002 東國醫學 Vol.9 No.1

일상생활에서 모발염색은 흔히 접할 수 있는 미용의 한 종류로 특히 젊은층을 중심으로 폭발적으로 유행하고 있다. 염색을 위항 사용하는 약제는 표백제와 발색제 등 각종 화학약품이 사용되고 있으나 이로 인한 건강장해에 대한 연구는 그리 많지 않다. 저자들은 염색이 인체의 모발건강에 미치는 영향을 파악하기 위하여 염색과 관련된 주관적 증상과 모발의 변화에 대한 실험적 연구를 시행하였다. 동국대학교 경주 캠퍼스 재학생 80명을 대상으로 설문조사를 시행하여 염색 유 ·무 및 염색 후에 경험한 증상에 대해 설문 조사하였고, 의과대학 재학생 46명을 대상으로 피부 반응 테스트를 실시하였다. 또한 염색 전후의 모발 탄성도를 측정하였고 모발의 상태를 파악하기 위해 전자 현미경검사를 실시하였다. 설문조사 결과 염색 전에 비하여 염색 후 안구혼탁, 안구건조, 시력저하, 발진 및 접촉성 피부염, 모발손상, 모근손상 등의 증상을 더 많이 경험한다고 호소하였다(p<0.05). 모발손상과 모근손상은 헤어드라이어 사용 빈도에 따라 증가하는 것으로 조사되었다(p<0.05). 피부반응검사에서 가려움증이 가장 많은 증상이었으며 이는 여성보다는 남성에서 높은 것으로 조사되었다. 염색 전후의 모발장력은 염색 전 134.5±10.37g, 염색 128.0±30.69g, 염색 이틀 후 112.5±19.69g으로 나타났다. 염색 전후의 모발의 전자현미경 케라틴 층이 현저히 감소하고 모발이 가늘어지는 차이를 보였다. 염색은 모발손상, 모발 케라틴 손상 및 모근 손상, 발진 및 접촉성 피부반응, 안구혼탁, 안구건조, 시력 저하를 유발한다. 따라서 염색약으로 인한 손상에 대한 주의와 예방이 필요하다고 생각한다. 예방대책으로 염색 전 피부테스트를 통한 적합성 여부를 판단하는 것이 필요하며 가급적 염색을 피하는 것이 좋을 것이다. 염색약에 발암물질이 포함되어있다는 보고도 있어 염색 제조사의 철저한 실험과 염색 물질의 선별이 염색으로 인한 부작용을 최소화하는데 중요한 역할을 할 것이다. Hair coloring has became one of the most popular cosmetic activities to younger generations during last decade. However, there are few studies on the health effect of widespread use of chemical dyes. This study was conducted to study the effects of hair coloring dye on hair and other systems. We conducted a questionnaire survey of 80 persons in Kyongju campus, Dongguk University. We have done open patch skin test on 46 medical students. We also conducted scanning electron microscopy to examine the hair strength and structure before and after hair coloring process. Injury of hair and hair bulb, contact dermatitis, turbid eyes, xerophthalmia, and poor visual acuity were the main symptoms complained after hair coloring (p<0.05). Injury of hair and hair bulb were increased by frequency of hair-dryer use(p<0.05). In open patch test, pruritus was complanined by more than half of the subjects. Mean strength of hairs before and after hair coloring was as follows; 134.5 (SD 10.37)g before hair coloring, 128.0 (SD 30.69)g immediately after hair coloring, and 112.5 (SD 19.69)g after two days. The scanning electron microscopic findings of hair surface before and after hair coloring showed decreased keratin layer and thinning of the hair. Hair coloring induces injury to hair, its keratin layer, and hair bulb as well as contact dermatitis, turbid eyes, xerophthalmia, and poor visual acuity. Therefore, we think that precaution is needed in use of hair coloring dye. To prevent complications induced by hair coloring dye, it is necessary, especially to those with allergy or skin disorders, to perform skin test before action and avoid hair coloring whenever possible. Longterm health effects of hairdye should be studied and manufacturing companies should try to minimize complications induced by hair coloring dye.

住宅需要階層에 따른 適正住居基準 設定 : 家口의 經濟的 能力을 中心으로

노백호,이주형 漢陽大學校 環境科學硏究所 1992 環境科學論文集 Vol.13 No.-

The purpose of this study is to suggest the optimal housing standards through the analysis of the relationship between permanent Income and housing Price. The Data wee surveyed in Seoul through 1989 year. It were analyzed to test the Conditional Logit and Hedonic Price Function by SAS Package. The findings of this study as follows : First, the low-income household consumes the housing size which has 24 Pyong and 2 rooms, the middle-income household consumes 29 Pyong and 3 rooms and high-income household consumes 37 Pyong and 3 rooms. Second, the Lifr-cycle I consumes the housing size which has 20 Pyong and 2 rooms, the Life-Cycle Ⅱ consumes 29 Pyong and 3 rooms, the Life-Cycle Ⅲconsumes 33 Pyong and 3 rooms and Life-Cycle Ⅳ consumes 34 Pyong and 3 rooms. Third, Housing Finance for the Housing Demand Groups to complement the effect of dwelling security is requireed.

中心壓軸力을 받는 高强度 鐵筋콘크리트 기둥의 耐力과 延性에 關한 실험적 硏究

곽노현,이영호,김남주,이경종,정헌수 중앙대학교 기술과학연구소 1997 기술과학연구소 논문집 Vol.27 No.-

A study on the behavior of short reinforced concrete columns was experimently described. Twenty-four concrete columns, with 20cm square and 60cm height, containing 8 longitudinal steel bars and different the amount of ties, spacing and concrete strengths, were subjected to concentric load by failure. Test results indicated that 1) It is incompatible in high-strength concrete to arrange stirrups to the AIK code of D/2 throughout the example of 10cm stirrup spacing following AIK codes. 2) As the amount of stirrup increased, the strength and ductily of reinforced concrete column improved. 3) As the concrete strength is high, the effect of the was reduced. 4) If strength enhancement factors increased, strain at maximum load also does and ductility ratios does almost linearliary. 5) The rate of strength enhancement factor does well with the modified kent & Park's theory. 6) As to the result of calculating the effective confined area which is suggested in Sheikh & Uzumeri's theory, the middle vertical steel is effective, only if the stirrups are arranged with spacing of 3cm.

機械工學敎育科 敎科課程 改善에 關한 硏究

金基曾,宋周鎬,朴鍾鎬,李盛魯,洪錫雨 충남대학교 공업교육연구소 1981 論文集 Vol.4 No.1

Change of the society owing to the national economic progress requires the reform of the education to produce qualified technical high school teachers in the university. In response to this need, the study on the curriculum for the mechanical engineering education in the university is inevitable. Currently, the curriculum requires 160 credits for graduation which are composed of 32 credits for the general subjects, 26 credits for the engineering basic subjects, 22 credits for the pedagogic subjects, and 80 credits or the major subjects. The study is limited only to the organization of the major subjects. As a result of this study, the new curricuiculum is presented and following conclusions are obtained; 1) Basic subjects is the major consolidated. 2) Separated courses for elective subjects are unified into one. 3) 80 credits for she major convist of 40 credits of required subjects and 40 credits of electives. 4) Theory and practice in the major subjects have proportions of 60 and 40 in classhour respectively. 5) To supplement the practice, field practice is systemtized and intensified its duration up to 2 months, but no credits are necessarily assigned to it.

간호전문직에 대한 자율규제기관으로서 법정단체의 구성에 대한 비교법적 고찰 : 간호조무사의 법정단체화에 대한 논의를 중심으로

주호노(Joo, Ho-No),김기영(Kim, Ki-Young) 원광대학교 법학연구소(의생명과학법센터) 2019 의생명과학과 법 Vol.22 No.-

최근 대한간호조무사협회는 협회를 법정단체로 인정하는 법률 개정을 추진하여 왔으며, 최근에는 그와 관련된 의료법 개정안도 의원 입법 형식으로 제출되어 국회에 계류 중에 있다. 우리나라 의료법은 의료인(의사, 간호사, 치과의사, 한의사, 조산사)에 대한 제반사항을 규정하고 있으나, 대부분 의사에 대한 규정이 주를 이루고 있고 간호사와 관련된 규정은 미흡한 것으로 평가될 수 있다. 특히 의료인력이 면허를 취득한 이후 갱신의무가 없어 면허가 평생 유지되는바, 진료능력에 대한 검증 및 인력수급관리가 원활하지 않을 우려가 있다. 의료인력에 대한 면허 발부에서 사후관리까지 책임지고 수행할 수 있는 전문기관이 마련되어 있지 않았다. 그러나 최근 설립된 한국간호평가원은 앞으로 전문적인 면허관리기관으로서의 역할을 수행해나갈 가능성을 보여주고 있다. 현행 의료법 제2조 제1항에 따르면 간호사는 중앙회 설립의 의무가 있는 의료인 단체를 규정하고 있다. 이러한 현행 법률에 의거하여 볼 때, 의료인의 범주에 속하지 아니하고 중앙회 설립의 근거가 없는 간호조무사가 의료법상 중앙회(법정단체)를 요구할 수 있는지에 대한 적법성을 검토할 필요가 있다. 본 연구에서는 우선 간호사에 대한 입법규율과 해외입법례를 살펴보고 우리나라에서 의료인단체의 현황을 비교하고자 한다. 이러한 현황과 비교하여 간호사에 대한 공익성강화를 위한 전문직으로서 자율규제단체의 정당성을 위해 전문직단체의 개념과 법적근거 및 법정단체설립의 주된 기준을 설명하고 간호조무사의 법정단체추진에 대한 법적 검토를 통해 간호전문직의 자율규제를 위한 간호전문직의 계층적 구조와 간호사중심주의로의 가능성을 검토하고자 한다. 아울러 공익성강화를 위한 기존의 법정단체로서 대한간호사협회의 역할과 방향에 대해서 살펴보고 결론과 전망을 제시하고자 한다. The non-statutory Korean Korean nursing assistants(Licensed Practical Nurse) Association has promoted to the statutory professional association. The corresponding amendments to the Medical Law were recently presented in legal form and are still pending in the National Assembly. Korean medical law sets general requirements for medical professionals (doctors, nurses, dentists, oriental doctors, midwives), but most of the regulations apply to doctors and the regulations relating to nurses can be considered inadequate. In particular, there is concern that medical skills review and supply and demand management will not go smoothly as the license will be maintained for a lifetime since there is no obligation to renew medical personnel after receiving a license. There was no specialized facility responsible for licensing and monitoring medical personnel. However, the Korea Institute of Nursing Evaluation has recently shown that it can play a role as an agency for professional license management. According to Article 2 Paragraph 1 of the current Medical Law, nurses define a group of doctors who are obliged to form a general assembly. According to these applicable laws, it must be checked whether a nursing assistant who does not belong to the category of medical personnel and has no basis for the chamber can request a statutory professional association. The purpose of this study is to examine the legal requirements and the foreign regulations of nurses and to compare the current status of medical organizations in Korea. Compared to this status, the concept of professional organizations, the legal basis and the main criteria for the establishment of a statutory professional association for the legitimacy of self-regulatory organizations as professions to promote public interest for nurses are explained. This study examines the hierarchical structure of the nursing profession and its potential for nursing-centered self-regulation of the nursing profession. In addition, the role and direction of the Korean Nurses Association as an existing legal organization to promote the public interest will be discussed and the conclusions and perspectives will be presented.

The use of immunosuppressive drugs and legal implications in xenotransplantation

Joo, Ho-No,Kim, So-Yoon,Kang, Sun-Joo,Lee, Kyung-Hwan The Korean Society of Toxicogenomics and Toxicopro 2010 Molecular & cellular toxicology Vol.6 No.4

Transplantation is recognized as one of the greatest triumphs of modern medical science, but we are confronting the severe shortage of organs for transplantation. Xenotransplantation, the transplantation of nonhuman organs, tissues or cells into humans could be an alternative to fundamentally resolve this problem. Despite the potential benefit, xenotransplantation also gives us a potential risk, which are rejection and infection. The potential immunological rejection means the possibility of the human immune system to reject any foreign object. The rejection mechanism is very similar to that by which the body resists infection. The rejection of foreign object may endanger the life of the recipient. In xenotransplantation, immunosuppressive drugs can be clinically used to prevent the rejection of foreign object. However, these toxic drugs have side effects: the immune system loses its ability to successfully resist infections. The potential risk of infection means xenozoonosis that might result from xenotransplantation. For example, a pig virus, especially PERV might infect the human recipient, mutate and spread first to the close contacts of the recipient and then to the general population. This article primarily focuses on warning the risk of rejection and infection. This article also discusses clinicaltrials, informed consent and legal liability as legal aspects of xenotransplantation. Especially, an in-depth study is further required on legal implications and toxicology of xenotransplantation because the use of immunosuppressants for resolving immune rejection may bring lots of potential toxicologic problems. While clinical trials and informed consent are pretransplant prevention against the potential risk as preconditions for xenotransplantation, legal liability is posttransplant protection from it.

살아 있는 장기기증자의 보호 - 독일의 장기이식법을 중심으로 -

주호노(Joo, Ho-No) 경희법학연구소 2004 경희법학 Vol.39 No.1

Mit dem Transplantationsgesetz von 1997 und 1999 je in Deutschland und Korea wurde für die Organtransplantation eine gesetzliche Grundlage geschaffen. Trotzdem bildet ein nach wie vor drängendes Problem der Transplantationsmedizin sowohl in Deutschland als auch in Korea der eklatante Mangel an Spenderorganen. Bei der Organentnahme vom toten Spender ist nicht zuletzt das Hirntodkriterium bereits als solches durchaus kritisch zu hinterfragen. Entsprechendes gilt erst recht für die Kriterien, die zur Feststellung des Hirntodes dienen sollen. Ganz generell ist auf den Schutz der Beteiligten, insbesondere des Organspenders Bedacht zu nehmen. Das deutsche Transplantationsgesetz lässt die Organentnahme vom Lebenden nur in engen Grenzen zu. Besondere Aufmerksamkeit wurde dem Schutz des Organspenders gewidmet, da es sich insoweit um einen therapeutisch nicht gerechtfertigten fremdnützigen Eingriff handelt. Nach dem deutschen Transplantationsgesetz ist die Entnahme von Organen einer lebenden Person nur zulässig, wenn die Person volljährig und einwilligungsfähig ist, umfassend aufgeklärt worden ist und in die Entnahme eingewilligt hat. Neben der Einwilligung des Organspenders schreibt das deutsche Transplantationsgesetz für die Organentnahme vom Lebenden auch die Geeignetheit, die Subsidiarität und den Empfängerkreis vor. Darüber hinaus beinhaltet das deutsche Transplantationsgesetz weitere Voraussetzungen für die Durchführung der Lebendspende.Diese Arbeit behandelt die Regelungen des deutschen Transplantationsgesetzes, den lebenden Organspender angemessen zu schützen.

뇌사의 법적 측면

주호노(Ho-No Joo) 국가생명윤리정책원 2019 생명, 윤리와 정책 Vol.3 No.1

이 논문은 법률상 법률효과를 달리하는 사람과 사체의 경계선으로서의 사람의 종기에 관하여 고찰하고 있다. 이 논문은 현행법상 사망의 판정 기준을 전통적으로 인정되어 온 심장사와 장기이식에 제한된 범위에서 새롭게 등장한 뇌사로 파악하고 있다. 나아가 이 논문은 의학기술의 비약적 발달로 인하여 사망의 판정방법에 있어서 심장사와 함께 뇌사의 이원화가 도모되고 있을 뿐만 아니라 심장사에 있어서도 새로운 판정방법으로서의 심장사 후기증(donation after cardiac death, 이하 DCD)의 도입이 요청됨으로써 사망 판정방법에 있어서의 의료화의 방법이 과제로 남게 되었다고 진단하고 있다. 끝으로 이 논문은 결어로서 규범적 평가에 있어서 자연사와의 동등성, 즉 DCD 또는 뇌사가 심장사와 같이 생명의 종국적이고 불가역적 소멸이라는 의학적 평가의 정확성과 일반인에 의한 사회적 수용의 당연성이라는 요건의 충족을 전제로 DCD의 도입 가능성과 뇌사의 독자성을 긍정하고 있다. This paper examines the end of human life as a boundary between living person and dead body that differs in legal effects. Under the current law, this paper considers a traditionally accepted cardiac death and a newly emerged brain death from a limited range of organ transplantation as a criteria of death determination. In addition, this paper diagnoses that the method of medicalization in death determination criteria remains a future problem not only due to needs of dualization of cardiac death and brain death in criteria of death determination but also due to introduction of donation after cardiac death in criteria of cardiac death determination based on the rapid development of medical technology. Finally, this paper concludes that the accept possibility of donation after cardiac death and brain death as criteria of cardiac death determination and death determination depends on the equivalence with natural death in normative evaluation, that is satisfaction of conditions such as the accuracy of the medical determination about ultimate irreversible extinction of life and the logic of the social acceptance by the general public.

장기기증에 있어서 순환정지 후 사망의 합리적 도입방안

주호노 ( Joo Ho-no ) 한국의료법학회 2020 한국의료법학회지 Vol.28 No.2

이 논문은 우리나라에서는 최초로 순환정지후장기기증의 법적ᆞ제도적 도입방안에 관하여 검토하고 있다. 순환정지후장기기증(DCD, Donation after Circulatory Death)이란 사망의 개념이 아니라 뇌사가 아닌 경우 심장사에 대한 새로운 판단기준을 의미하는 것으로 이해되고 있다. 그 동안의 심장사 또는 심폐사는 심박을 기준으로 사망을 판정해왔지만, 새롭게 등장한 순환정지후장기기증에 있어서의 순환사는 순환을 기준으로 사망을 판정하기 때문이다. 순환정지후장기기증은 뇌사기증자의 고갈로 이식용 장기의 수급차이를 줄이기 위하여 서구에서는 이미 10여년 전부터 활발히 시행되어 오고 있는 제도이다. 우리나라에서도 이식용 장기의 수급차이가 점점 심화되고 있을 뿐만 아니라 이식의료와 관련된 기술의 발달과 연명의료중단등에 대한 법률의 제정과 시행으로 변화된 환경은 DCD의 도입가능성을 더욱 높게 하고 있는 상황이다. 여기서 이 논문은 목차를 Ⅰ. 서언, Ⅱ. DCD의 개념, Ⅲ. 외국의 입법례, Ⅳ. DCD의 허용요건 및 Ⅴ. DCD의 도입방안으로 구성한다. 끝으로 Ⅵ. 결어에서는 DCD의 도입방안으로서 제1안 장기이식법의 개정안과 제2안 연명의료결정법의 개정안 및 제3안 양법 모두의 체계적 정비를 위한 개정안이라는 3가지의 방안을 제시하고 있다. This paper is the first discussion about introduction of Donation after Circulatory Death(DCD) in korean legal system. It is understood that DCD is not a concept of death, but a new criterion for determining cardiac death if it is not Brain Death(BD). Because a traditional cardiopulmonary death or a cardiac death is determined based on heart beating, but a newly emerged DCD is determined based on circulation. DCD has become an acceped strategy to reduce the shortage of organs for transplantation in many european countries. In Korea, the difference in supply and demand of organ for transplantation is getting deeper, and the legal environment changed by the enactment and enforcement of so-called ‘Act on Hospice and Palliative Care and Decisions on Life-Sustaining Treatment for Patients at the End of Life’ is raising the possibility of introducing DCD. This Paper consists of Ⅰ. Introduction, Ⅱ. The concept of DCD, Ⅲ. Foreign legislation, Ⅳ. The acceptance requirements of DCD and Ⅴ. The introduction for DCD. Finally, Ⅵ. The conclusion suggests three ways to introduce DCD, such as the amendment to so-called ‘Internal Organs, etc. Transplant Act’(organtransplantation act) in the first proposal, the amendment to so-called ‘Act on Hospice and Palliative Care and Decisions on Life-Sustaining Treatment for Patients at the End of Life’ and the amendment for systematic reorganization of both acts in the third proposal.