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상수원수 수질변화에 따른 전오존 처리효과 및 경제성 평가
최동훈 ( Dong Hoon Choi ),박진식 ( Jin Sik Park ),문추연 ( Choo Yeun Moon ),이재용 ( Jae Yong Lee ),유동춘 ( Dong Choon Ryu ),장성호 ( Seong Ho Jang ),권기원 ( Ki Won Kwon ),이수애 ( Soo Ae Lee ) 한국환경과학회 2013 한국환경과학회지 Vol.22 No.4
This study, changes in raw water quality is to indicate on the efficiency of ozone treatment of each pollutant as compared to derive the appropriate operating measures. The appropriate selection for injection rate of pre-ozone and did not inject pre-ozone assess changes in the water. When good water quality, you not injected of pre-ozone to evaluate the economic efficiency of electricity and put the most cost-effective ozone concentration were evaluated. Evaluation remove organic matter and chlorophyll-a concentration level in experiments with each factor of the water DOC> 2.5㎎ / L, THMFP> 70㎍ / L, Chl-a> 30㎎/㎥or less constant process, if you do not need to put pre-ozone showed little impact. It also does not put you in pre-ozone appropriate produce enough power rate savings was calculated as approximately 90 million won. Ability to remove organic materials and the ability to produce disinfection byproducts, and cost-effective decisions by considering the concentration of injection if pre-ozone 1 mg/L was investigated by the appropriate concentration of ozone injection.
Clinical efficacy of 1,444-nm Nd-YAG laser for xanthelasma palpebrarum
( Jae Beom Park ),( Hee Won Jang ),( Jung Jin Shin ),( Chang Min Kim ),( Hwa Jung Ryu ),( Il Hwan Kim ) 대한피부과학회 2015 대한피부과학회 학술발표대회집 Vol.67 No.1
Xanthelasma palpebrarum does not regress spontaneously, its appearance is often seen as cosmetically disturbing. Various treatments of xanthelasma palpebrarum have been studied, including surgical excision, treatment with chemicals, and ablative laser therapy, but these methods have some disadvantages. This case study was designed to evaluate the effect of a 1,444-nm Nd-YAG laser in the treatment of xanthelasma palpebrarum. 10 patients were treated using a 1,444-nm Nd-YAG laser. Lesions were anesthetized by lidocaine and 1:100000 epinephrine and then destroyed by irradiating laser. The results were scored as no effect (<20% clearing) in 0 (0%) patient; some improvement (20-40% clearing) in 1 (10%) patients; moderate improvement (40- 60% clearing) in 3 (30%) patients; marked improvement (60- 80% clearing) in 3 (30%) patients; and excellent (>80% clearing) in 3 (30%) patients. Treatment was well tolerated, with no peri-procedural pain, and wound care was easy. Focal hyperpigmentation was noted and post-treatment local swelling lasted 3 to 4 days. The 1,444-nm Nd-YAG laser treatment is a new, valuable treatment option for xanthelasma palpebrarum, offering relatively mild side effects. So we think 1444nm Nd-YAG laser is an effective and safe therapeutic modality for xanthelasma palpebrarum.
Won Hee Jang(장원희),Young-Il Yang(양영일),Youn Jae Lee(이연재),Jin Ho Chun(전진호),Sung Su Yea(예성수),Dae-Hyun Seog(석대현),Hyeong-In Kim(김형인) 한국생명과학회 2008 생명과학회지 Vol.18 No.9
Pro-inflammatory cytokine인 종양괴사인자-α (TNF-α)는 B형 간염바이러스(HBV) 감염에 대한 면역반응의 중요한 매개인자이다. TNF-α의 생산은 전사수준에서 주로 조절되며, TNF-α promoter 다형성은 TNF-α 유전자 발현을 변화시키기 때문에, TNF-α promoter 다형성이 만성 HBV 감염의 병태생리에 영향을 미칠 가능성이 높다. 그러므로I 본 연구에서는 TNF-α promoter 다형성과 만성 HBV 감염의 연관성을 조사하였다. 본 연구는 만성 HBV 감염환자 181명, HBV 감염이 자연적으로 치유된 201명, 그리고 건강한 대조군 170명을 대상으로 하였다. TNF-α promoter의 -308G/A와 -238G/A 다형성은 PCR-RFLP법을 통하여 분석하였다. 분석결과, 환자군에서 -308과 -238 유전자형의 분포는 자연치유군 및 건강대조군에서의 분포와 통계적인 차이를 보이지 않았다(p>0.05). 또한, 그룹 간에 allele frequency도 통계적 차이가 없었다(p>0.05). 따라서, 본 연구의 결과는 한국인에서 TNF-α -308과 -238 promoter 다형성은 만성 B형 간염 바이러스 감염의 발생과 연관성이 없음을 시사한다. The pro-inflammatory cytokine tumor necrosis factor-α (TNF-α) is an important mediator of the immune response in hepatitis B virus (HBV) infection. Since the production of TNF-α is mostly regulated at the transcriptional level and polymorphisms in the TNF-α promoter alter its expression, TNF-α promoter polymorphisms could affect the pathogenesis of chronic HBV infection. In this study, we investigated the potential association of TNF-α promoter polymorphisms with chronic HBV infection. The study included 181 patients with chronic HBV infection, 201 persons who had been spontaneously recovered from hepatitis B, and 170 unrelated healthy controls. The -308G/A and -238G/A polymorphisms in the TNF-α promoter were analyzed by PCR-restriction fragment length polymorphism. The distribution of both the -308 and -238 genotypes in the patient group was not statistically different from that in the spontaneous recovery and control groups (p>0.05). There was also no significant difference in the allele frequency between the groups (p>0.05). The results suggest that the TNF-α -308 and -238 promoter polymorphisms are not associated with the development of chronic HBV infection in the Korean population.
( Won-jae Lee ),( Yong-joo Kim ),( Young-woo Seo ),( Milon Chowdhury ),( Seung-ho Jang ),( Beom-seon Lee ),( Sun-ok Chung ) 한국농업기계학회 2018 한국농업기계학회 학술발표논문집 Vol.23 No.1
Protected crop cultivation facilities such as greenhouses is getting more popular. The conditions favorable to crops, however, cause increase of diseases, insects, and harmful flies, in some cases. In the study, a control system of an unmanned and remote-controlled harmful-fly collection device for smart greenhouses was developed and the performance was evaluated. The harmful-fly collection device consisted of a driving motor to move the device along the monorail installed in the greenhouses, blowing fans to create outward winds to detach the flies from the crop surfaces and move in the air and also inward suction air flow into the collection device, an electronic mesh-wired bracket to kill the flies at the entrance of the collection part, and LED lamp to attract the flies, and an UV lamp sterilizing the air to reduce ambient diseases and viruses. The control system consisted of a sensing part, a control part, wireless communication part, and a central management part. Overall, the control system showed a favorable performance. The device location was successfully monitored using the infrared sensor.
GIT1 is associated with ADHD in humans and ADHD-like behaviors in mice
Won, Hyejung,Mah, Won,Kim, Eunjin,Kim, Jae-Won,Hahm, Eun-Kyoung,Kim, Myoung-Hwan,Cho, Sukhee,Kim, Jeongjin,Jang, Hyeran,Cho, Soo-Churl,Kim, Boong-Nyun,Shin, Min-Sup,Seo, Jinsoo,Jeong, Jaeseung,Choi, S Nature Publishing Group, a division of Macmillan P 2011 Nature medicine Vol.17 No.5
Attention deficit hyperactivity disorder (ADHD) is a psychiatric disorder that affects ??% of school-aged children; however, the mechanisms underlying ADHD remain largely unclear. Here we report a previously unidentified association between G protein??coupled receptor kinase??interacting protein-1 (GIT1) and ADHD in humans. An intronic single-nucleotide polymorphism in GIT1, the minor allele of which causes reduced GIT1 expression, shows a strong association with ADHD susceptibility in humans. Git1-deficient mice show ADHD-like phenotypes, with traits including hyperactivity, enhanced electroencephalogram theta rhythms and impaired learning and memory. Hyperactivity in Git1<SUP>??/??</SUP> mice is reversed by amphetamine and methylphenidate, psychostimulants commonly used to treat ADHD. In addition, amphetamine normalizes enhanced theta rhythms and impaired memory. GIT1 deficiency in mice leads to decreases in ras-related C3 botulinum toxin substrate-1 (RAC1) signaling and inhibitory presynaptic input; furthermore, it shifts the neuronal excitation-inhibition balance in postsynaptic neurons toward excitation. Our study identifies a previously unknown involvement of GIT1 in human ADHD and shows that GIT1 deficiency in mice causes psychostimulant-responsive ADHD-like phenotypes.
Jang, Jae-Myung,Jeong, Byeong-Ho,Kim, Young-Rae,Shin, Dae-Hyun,Kim, Seung-Hee,Chung, Sang-Won,Choe, Han-Cheol American Scientific Publishers 2017 Journal of Nanoscience and Nanotechnology Vol.17 No.6
<P>The Ultra-fine HAp nanoparticles (spherical protrusion) synthesized onto TiO2 barrier oxide film have been shown to exhibit desirable properties as biocompatible or unusual coating layer. The numerous spherical morphologies depending on progress of anodizing time were gradually appeared to the surface whole area. TiO2 barrier oxide film formed by electrochemical method was composed of characteristics laminated structure including the HAp nanoparticles of 7 similar to 10 nm in diameter. The results of EDS (Energy Dispersive Spectroscopy) line analysis, the elements existing TiO2 barrier oxide film reveal that molar ratio of Ca/P is about 1.615, which is very closed to the Ca/P molar ratio in Ca-10(PO4)(6)(OH)(2): 1.67. The incorporated phosphate species were found mostly in the forms of HPO4-, PO4-, and PO3-, which were penetrated from the electrolyte into the TiO2 barrier layer during anodic process. After 6 and 8 days of soaking in SBF, the HAp nanoparticles (spherical protrusion) were nearly covered with the granular structures, and displayed more micro-cracks on the surface. The Ca/P atomic ratio of the HAp coating was exactly 1.67, as was expected by stoichiometric composition of HA (Ca-10(PO4)(6)(OH)(2)). Thus, it is clearly suggested that these structures of TiO2 barrier oxide film are all effective for biocompatibility.</P>