한국 정신장애의 역학 조사 연구[I] : 각 정신장애의 유병률

조맹제,함봉진,김장규,박강규,정은기,서동우,김선욱,조성진,이준영,홍진표,최용성,박종익,이동우,이기철,배재남,신정호,정인원,박종한,배안,이충경 大韓神經精神醫學會 2004 신경정신의학 Vol.43 No.4

Objectives : This study aims to estimate the prevalence of the DSM-IV psychiatric disorders in Korean population using the Korean version of Composite International Diagnostic Interview (K-CIDI). Methods : Subjects were selected by taking multi-stage, cluster samples of 7,867 adult household residents, 18 to 64 years of age, in ten catchment areas. Total 78 trained interviewers administered the K-CIDI to the selected respondents, from June 1 to November30,2001. Results : Total 6,275 respondents completed the interview. Some 33.5% of respondents reported at least one lifetime disorder, 20.6% reported at least one-year disorder, and 16.7% reported at least one-month disorder. The most common lifetime disorders were alcohol abuse/dependence (17.24%), nicotine dependence/withdrawal (11.19%), specific phobia (5.16%), and major de-pressive disorder (4.25%). The lifetime prevalence of substance abuse/dependence (0.25%) and schizophrenia (0.16%) was very low. Nicotine and alcohol use disorder showed very high male/female ratio. Mood disorder and anxiety disorder were more prevalent among female than male. Conclusion : The prevalence of psychiatric disorders was high. In comparison with other studies, remarkable differences in distributions of psychiatric disorders across the areas and times were observed.

Mixer-Settler를 이용한 연속공정에 의한 니켈과 코발트의 추출

안재우,안종관,이만승 대진대학교 첨단소재연구소 2001 첨단소재연구소논문집 Vol.4 No.-

Extraction behaviors of Co and Ni in hydrochloric acid solutions by Alamine336(Teritary amine) have been investigated in mixer-settler. The feeding aqueous solution contained 5.0g/L nickel and 0.7g/I, Co in 5.0M hydrochliric acid solution. The organic phase being used for extractant comprised 20 vol. % Alamine336(Teritary amine) in Xylene. The 10 mixer-settler units of count current type consist of 3 extraction, 2 scrubbing, 3 stripping and 2 washing sections. The extraction percent of Co was 99 % but Ni was not extracted during 3 steps. Ni co-extracted with co was removed in 2 steps of scrubbing section by 6M hydrochloric acid solution from organic phase. Over 92% of Co from organic phase was stripped by 0.1M hydrochloric acid solution in 2 volume ratio of organic and aqueous phase. After stripping, the organic phase that was washed by 3.0 M hydrochloric acid solution in 2 volume ratio of organic and aqueous phase could be recycled for the organic solution.

Zn-Ni 연속경사 합금도금에 관한 연구

안재우,마창익,안종관 대진대학교 1999 大眞論叢 Vol.7 No.-

Electrodeposition experiments of gradually composite alloys were conducted using rotating disc geometry. Effects of rotating speed and potential on the composition of alloys were studied. Mechanical properties and corrosion resistance of the gradually composite alloys were compared with those of the normally deposited alloys. Zinc content of Zn-Ni alloys increased as increasing disc rotation speed and voltage. Corrosion resistance and adhesion of the gradually composite alloys for all the tested alloys were better than the normally deposited ones.

폴리카보네이트와 폴리메틸메타크릴레이트 혼합물의 상거동 특성 연구

안영철,천우종 慶南大學校 附設 工業技術硏究所 1998 硏究論文集 Vol.15 No.3

본 연구에서는 비스페놀-A계 폴리카보네이트와, 폴리메틸메타크릴레이트 혼합물의 상거동을 미분주사 열량계를 사용하여 조사하였다. 용매 메틸렌클로라이드, 테트라하이드로푸란과 비용매 헵탄을 사용한 용액 캐스팅법으로 높은 분자량의 폴리카보네이트와 폴리메틸메타크릴레이트 혼합물을 만들었다. 메틸렌클로라이드와 테트라하이드로푸란을 용매로 사용한 용액캐스팅법으로는 단상의 혼합물을 만들지 못하지만, 비용매 헵탄에 의한 침전법은 폴리카보네이트의 분자량이 작을 때 단상의 블렌드가 생긴다는 기존의 학설과는 달리 분자량이 큰 폴리카보네이트와 폴리메틸메타크릴레이트의 블렌드가 단상의 혼합물을 형성할 수 있다는 것을 확인하였다. The phase behavior of the blends of bisphenol-A polycarbonate(PC) and polymethyl methacrylate(PMMA) has been investigated by a differential scanning calorimetry. Using methylene chloride and tetrahydrofuran as solvents and heptane as non-solvent, a blend of high molecular weight PC and PMMA was made and examined. Differently from the generally accepted theory that a blend obtained by precipitation from its solution using non-solvent heptane forms a homogeneous phase only for the low-molecular weight PC, it was shown that a high molecular weight PC is able to from a homogeneous phase blend with PMMA by the precipitation technique using heptane as the non-solvent.

함구리 황산폐액으로부터 LIX84-Kerosene-Span80-H₂SO₄계 유화형 액막법에 의한 구리의 분리 농축

안종관,안재우,신선명,김동진 대한금속재료학회 2004 대한금속·재료학회지 Vol.42 No.4

The separation and extraction of copper from waste water solutions by the liquid surfactant membrane process using LM84 as an extractant and Span 80 as a surfactant were investigated . In extraction, the extraction rate of copper was greatly accelerated by the presence of sodium acetate and with the increase of pH in the aqueous feed solution. The optimum concentrations of LIX84 and Span 80 in the membrane phase were 7-10 vol. % and 2.5-3vol. %, respectively. Experiments also showed that the concentration ratio of copper was greatly enhanced with the decrease of the ratio of V_(e) and V_(w) and with the decreasing of A/O ratio. After the extraction process, the concentration of copper in the raffinate solution reduced to 1-2 ppm, and the concentration of copper in the internal aqueous solution increased to 20 gll. (Received February 11, 2004)

神闕의 穴位 특징과 鍼灸治療에 대한 문헌 고찰

안성훈,조명수,송재수,도진우,김종성,손인철 한국전통의학연구소 2002 한국전통의학지 Vol.12 No.1

This study was designed to investigate the location of Sin-Guel(CV_(8), 神闕) through literature research. We extracted the part about the location of Sin-Guel(CV_(8), 神闕) from ancient and modern oriental medical literature which were used commonly in clinic. The results were summarized as follows; 1. The location of Sin-Guel(CV_(8), 神闕) were generally recorded DangJeJung. 2. Sin-Guel(CV_(8), 神闕) placed in middle of linea alba. 3. Treatment effect of moxibustion on Sin-Guel(CV_(8), 神闕) were recorded as diarrhea, dropsy, prolapse of the anus, stomachache, paralysis etc.. 4. Acupuncture therapy on Sin-Guel(CV_(8), 神闕) is dangerous because of inflammation, it is suggested that acupuncture therapy may be possible if acupuncture therapy do not induce inflammation on Sin-Guel(CV_(8), 神闕).

NaOH 첨가에 따른 음식물찌꺼기 고온 혐기성 산발효

안철우,이철승,서종환,박진식,문추연,장성호,김수생 한국환경농학회 2004 한국환경농학회지 Vol.23 No.4

본 연구는 음식물찌꺼기의 혐기성 산발효에 있어 여러 조건들 중 온도가 효율적인 가수분해와 산발효에 미치는 영향을 검토하기 위해 고온(55℃)과 중온(35℃)에서 각각 실험을 수행하여 다음과 같은 결론을 얻을 수 있었다. 음식물찌꺼기의 혐기성 산발효시 산생성 효율을 높이기 위한 전처리 과정으로 음식물찌꺼기에 NaOH를 투입한 결과 가수분해효율을 표현한 가용화 정도(Solubilization)가 0.01 g NaOH/g TS이하로 투입된 경우 0.01 mgSCOD_(prod)/mgICOD_(inf)이하를 나타내었으나, 0.05 g NaOH/g TS이상을 투입했을 때는 0.07~0.09 mgSCOD_(prod)/mgICOD_(inf)로 나타났다. 따라서 음식물찌꺼기에 NaOH를 투입하여 효율적인 가수분해가 이루어지기 위해서는 g TS당 0.05 g이상의 NaOH가 투입되어야 할 것으로 판단된다. 음식물찌꺼기를 NaOH로 전처리한 후 고온(55℃) 산발효를 실시했을 때 0.05 g NaOH/g TS 투입시 SCOD의 증가치 3,800 mg/L로 최대의 가용화와 산생성에 효과적인 pH 5.95를 얻을 수 있었다. 0.05 g NaOH/g TS를 투입하여 중온(35℃)에서 산발효를 실시한 경우와 비교하여 SCOD 증가치가 약 5배 정도 높았고, 최대 가용화에 이르는 시간도 중온의 2/3 정도로 짧아 음식물찌꺼기의 가용화에는 고온이 효과적인 것으로 나타났다. NaOH 0.05 g NaOH/g TS로 전처리된 음식물찌꺼기의 산발효 결과 고온(55℃) 및 중온(35℃)에서 각각 반응시작 후 72시간에 12,600 mg/L, 120tlrksdp 9,800 mg/L의 VFA농도를 나타내어 동일기질을 이용하여 산발효를 실시했을 때 중온보다는 고온에서 미생물의 활성증대와 유기물의 가수분해가 촉진되어 VFA생성이 효율적인 것으로 판단되었다. 고온에서 NaOH에 전처리된 음식물찌꺼기를 산발효 시켰을 때 VFA가 가장 높았던 시점을 기준으로 VFA의 조성을 조사한 결과 acetic acid가 45.9%, butyric acid가 26.7%, propionic acid가 13.9% 등으로 총 유기산 발생량의 86.5%를 차지하였다. This study showed that thermophilic anaerobic acid fermentation of food wastes had an enhanced hydrolysis capability and improvement of acidification efficiency. Influence of pH on the anaerobic hydrolysis and acidogenesis was investigated to determine the proper alkalinity in the thermophilic fermentation of food wastes. The results of putting NaOH as alkali to evaluate hydrolysis and acid fermentation efficiency in acid fermentation process of food wastes showed that the food wastes pretreated with 0.05 g NaOH/g TS had the maximum 12,600 mg/L of VFAs concentration during HRT 3 days in 55℃ hermophilic condition and the maximum 9,700 mg/L of VFAs concentration during HRT 5 days in 35℃ mesophilic condition. The accomplishment of high VFAs concentration resulted from that the main component of food wastes such as cellulose, lignin and etc. is performed active chemical decomposition by alkali in thermophilic condition. The major components of VFAs produced from the thermophilic acid fermentation process of food wastes were the short chain fatty acids such as acetic acid, butyric acid, and propionic acid.

급냉응고 Al-20Si-5Fe-2Ni알루미늄 압출재의 가공변수에 따른 미세조직과 기계적 성질

안종기,이상용,신평우 國立 昌原大學校 産業技術硏究所 1997 産技硏論文集 Vol.11 No.-

The characteristics of heating were studied on powder metallurgy and spray formed extrudate. After heating over the temperature range 300∼490℃ for 30min. and air cooling, the hardness and the tensile strength were similar to as-extruded state and the growth of primary Si and intermetallic was restricted by higher activation energy of iron. After heating over the temperature range 300∼490℃ for 30min. and water quenching, the hardness increased by induced internal stress. The formability of powder metallurgy and spray formed extrudate was improved as deformation temperature increased. The formability of spray formed extrudate was superior to that of powder metallurgy extrudate about 10% because of the microstructure homogenience.

Aptamer‑linked immobilized sorbent assay for detecting GMO marker, phosphinothricin acetyltransferase (PAT)

Woo‑Ri Shin,Mun‑Jong Lee,SEKHONSIMRANJEET SINGH,Ji Hun Kim,Sun Chang Kim,Byung‑Kwan Cho,Ji‑Young Ahn,Yang‑Hoon Kim 대한독성 유전단백체 학회 2020 Molecular & cellular toxicology Vol.16 No.3

Background Development of genetically modified crops has rapidly increased in last few years. The most widely grown GM crops express genes that confer herbicide tolerance and insect resistance. Detection system of GM crops is important for safety evaluation before its consumption. Objective The purpose of this research is to detect GM crops, especially PAT, in food-samples. Results The bar gene (PAT protein, herbicide resistant) was cloned in pGEX-4T-1 and expressed by E. coli. The high-affinity PAT-specific single-stranded DNA (ssDNA) aptamers were obtained from a random DNA library. MOE docking study was performed to identify the potential binding region of the selected aptamers on PAT. Aptamer-linked immobilized sorbent assay (ALISA) method was used to detect PAT. Conclusion We screened aptamer against PAT for developing an efficient detection method. The selected PAT specific aptamers, HRPA-05 and HRPA-07, showed the distinct target binding behaviors, and detected PAT protein by aptamer-linked immobilized sorbent assay method with high efficiency and selectivity.

PCB 질사에칭액으로부터 질산과 유가금속의 회수

안재욱,安種寬,李晩承 대한금속재료학회 2002 대한금속·재료학회지 Vol.40 No.1

A study has been made on the recovery of nitric acid and valuable metals such as Cu, Sn and Pb from the spent nitric etching solutions. The nitric acid was extracted effectively by TBP but the heavy metals such as Fe, Cu, Sn and Pb were not extracted by TBP from the spent nitric etching solutions. From the experimental results, 95% of nitric acid in spent etching solution was extracted at O:A ratio of 3:1 in five stages by 60% TBP, and 98% of nitric acid was stripped from the loaded organic phase at O:A ratio of 1:1 in four stages by distilled water. After extraction of nitric acid, Cu was effectively recovered as a metal by electrowinning and Sn was successfully removed by precipitation methode as the form of hydroxide or hydrated oxide by adjusting pH of the raffinate solution. Finally, Pb was recovered by cementation with iron scrap at above 65℃. Parameters controlling the cementation process, such as temperature, pH and the effect of the additives were investigated.