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초고온 호기성 퇴비화 공정의 복합 악취 및 악취 물질 평가
박세용(Park Seyong),정대혁(Jung Dai-Hyuck),유의상(Yoo Eui-Sang),김문일(Kim Moonil) 한국지반환경공학회 2009 한국지반환경공학회논문집 Vol.10 No.5
본 연구는 정읍시에서 배출되는 하수 슬러지, 축산 분뇨, 음식물 쓰레기를 대상으로 Pilot Scale(100㎥) 초고온 호기성 퇴비화 공정에서의 복합 악취 및 12개 지정 악취물질을 평가하였다. 각각의 대상 물질은 종균과 혼합하였고 1차 50일, 2차 60일 기간동안 운전하였다. 호기성 퇴비화가 진행됨에 따라 1차, 2차 퇴비화공정에서 온도가 상승하여 약 90~95℃가 되었다. 악취 분석을 위한 시료는 1차의 경우 퇴비상부에서, 2차의 경우 Pilot Plant 경계지점에서 채취하였다. 지정 악취 물질 12개 항목의 기기 분석에서 악취의 주요 원인으로는 암모니아, 메틸머캅탄, 디메틸다이설파이드, 트리메틸아민이었다. 초기 복합악취의 농도는 퇴비화 공정이 끝난 후의 농도보다 높았지만 규제기준을 넘지 않았다. 초고온 호기성 퇴비화 공정에서는 적절한 교반시점과 발효 온도가 악취 발생의 중요한 인자라고 판단된다. This study was conducted to evaluate production of complex odor and 12 specific odorous compounds in a pilot-scale (capacity : 100 ㎥) ultra thermophilic aerobic composting. There were three types input: municipal wasted sludge, livestock manure and slurry, and food waste produced in Jung-Eb city. Each raw material was mixed with seed material and operated for two periods (1st : 50 days, 2nd : 60days). During composting, the temperature hit 90~95℃ after every mixing in both periods. Therefore, it was concluded that increasing temperature also saves the time which required for composting and high reduction of organics and water contents. The primary odorous compounds were ammonia, methyl mercaltan, dimethyl disulfide and trimethylamine. The concentration of the primary compounds and complex odor during the operation were higher than those on final day and most compounds did not exceed the allowable exhaust standard for odor. Also, it was found that optimal mixing time and control of high temperature are the most important parameters for odor control in ultra thermophilic aerobic composting.
( Sang-woo Park ),( Hyun-bin Kwak ),( Sang-kyung Lee ),( Eui-sung Jung ),( Su-kyung Park ),( Jaehyeon Lee ),( Hye-soo Lee ),( Seok-kweon Yun ),( Han-uk Kim ),( Jin Park ) 대한피부과학회 2021 Annals of Dermatology Vol.33 No.6
Nontuberculous mycobacteria are ubiquitous environmental organisms that are rare pathogens in immunocompetent individuals. However, cutaneous nontuberculous mycobacteria infections have been increasingly associated with invasive procedures, including surgery, liposuction, filler injection, intramuscular injection, mesotherapy, piercing, acupuncture, and cupping therapy. Herein, we report the first case of cutaneous nontuberculous mycobacteria infection caused by the East-Asian traditional treatment ‘Gua Sha’, also known as scraping, coining or spooning in English. A 35-year-old healthy female presented with widespread, painful skin nodules and pustules on her upper and lower extremities that had developed after Gua Sha treatment for body contouring. Histopathologic examination of the lesions revealed granulomatous inflammation in the dermis and the culture isolates were identified as Mycobacterium massiliense with molecular identification. The patient was successfully treated with intermittent incision and drainage of persistent nodules and oral clarithromycin based on antimicrobial susceptibility testing. We recommend implementation of a standard safety protocol for Gua Sha practitioners to minimize the risk of infection transmission.
Jung, Sunhee,Song, Suk-Won,Lee, Sak,Kim, Se Hoon,Ann, Soo-jin,Cheon, Eun Jeong,Yi, Gijong,Choi, Eui-Young,Lee, Seung Hyun,Joo, Hyun-Chel,Ryu, Do Hyun,Lee, Sang-Hak,Hwang, Geum-Sook Elsevier 2018 Atherosclerosis Vol.269 No.-
<P><B>Abstract</B></P> <P><B>Background and aims</B></P> <P>Atherosclerosis is a chronic inflammatory disease characterized by thickening of the arterial wall. However, a limited number of studies have been conducted on metabolic profiling of human aortic tissue.</P> <P><B>Methods</B></P> <P>We applied liquid chromatography/mass spectrometry to perform global and targeted profiling of plaque-containing aortic tissue. The aorta samples included plaque-containing (n = 18) and control plaque-free (n = 24) aortic tissue from patients undergoing aortic surgery.</P> <P><B>Results</B></P> <P>The metabolic patterns of atherosclerotic and control vessels were significantly different. Metabolites in the purine and glutathione pathways showed dysregulation of oxidative stress in plaques, and levels of glucosylceramide, tryptophan, and kynurenine, which are related to inflammation, were also altered. Interestingly, an increased level of quinic acid was observed in plaques (<I>p</I> < 0.000), and we demonstrated an inhibitory effect of quinic acid on inflammatory activation and oxidative stress in macrophages.</P> <P><B>Conclusions</B></P> <P>Our study provides insight into the disease mechanism and potential markers of atherosclerosis through comprehensive metabolic profiling of human aortic tissue samples containing plaque.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Metabolic profiling in plaque-containing and plaque-free aortic tissue was applied. </LI> <LI> The metabolic patterns of atherosclerotic and control vessels were significantly different. </LI> <LI> Metabolites related to oxidative stress and inflammation were altered in atherosclerotic aorta. </LI> <LI> Quinic acid level in plaques was increased and its biological effects were demonstrated. </LI> <LI> Metabolic profiling provides an overview of the metabolic dysregulation in atherosclerotic aorta. </LI> </UL> </P>
Clinicopathological and immunohistochemical characteristics of bullous pilomatricoma
( Sang-kyung Lee ),( Eui-sung Jung ),( Il-jae Lee ),( Kyung-hwa Nam ),( Han-uk Kim ),( Seok-kweon Yun ) 대한피부과학회 2020 대한피부과학회 학술발표대회집 Vol.72 No.1
Background: Bullous pilomatricoma is a rare variant of pilomatricoma. However, limited understanding of the clinicopathological characteristics hampers proper clinical diagnosis and treatment. Objectives: To analyze the clinicopathological and immunohistochemical characteristics of bullous pilomatricoma and to understand the bullous transformation of pilomatricoma. Methods: 12 patients diagnosed with bullous pilomatricoma were included. The clinical, histopathological, and immunohistochemical data were comparatively analyzed relatively to those of ordinary pilomatricoma. Results: Bullous pilomatricoma showed no gender preference, with a mean age of onset of 31.2 years. The common sites were upper extremities and the trunk. Bullous pilomatricoma had shorter disease duration, larger diameter, tendency to increase in size than ordinary pilomatricoma. Histopathologically, bullous pilomatricoma have an earlier chronological stage, lesser calcification, more mitotic figures and distinct dermal features including vascular development and loosening of extracellular matrix. Immunohistochemically, the expression of matrix metalloprotease (MMP)-2, MMP-9, vascular endothelial growth factor receptor-3 (VEGFR-3), and VEGF-C was increased. Conclusion: The distinctive features of bullous pilomatricoma are presumed to be result from dermal changes associated with release of angiogenic factors and proteolytic enzymes. This comprehensive analysis might improve the understanding of bullous pilomatricoma.
Cutaneous Mycobacterium massiliense infection caused by skin coining ‘gua sha’
( Sang-woo Park ),( Eui-sung Jung ),( Hyun-bin Kwak ),( Soo-kyung Park ),( Seok-kweon Yun ),( Han-uk Kim ),( Jin Park ) 대한피부과학회 2018 대한피부과학회 학술발표대회집 Vol.70 No.1
Nontuberculous mycobacteria are ubiquitous environmental organism that is rare, significant human pathogen in immunocompetent individuals. Cutaneous nontuberculous mycobacteria infections have been increasing developed associated with invasive procedures including surgery, liposuction, filler injection, intramuscular injection, mesotherapy, piercing, acupuncture, or cupping therapy. Herein, we report the first of cutaneous nontuberculous mycobacteria infection caused by East-Asian traditional treatment ‘Gua Sha’, also known as scraping, coining or spooning in English speaker. A 35-year-old healthy female presented with widespread, painful, skin nodules and pustules on her both upper and lower extremities that had developed after ‘Gua-Sha’ treatment for her body contouring. Histopathologic examination of the lesions revealed granulomatous inflammation in the dermis and the culture isolates were identified as Mycobacterium massiliense using polymerase chain reaction assay. The patient was successfully treated with intermittent incision and drainage and oral clarithromycin based on antimicrobial susceptibility testing.