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송유림 ( Yu-rim Song ),박경미 ( Kyung-mi Park ),양승정 ( Seung-jeong Yang ),이은규 ( Eun-kyu Lee ),김혜화 ( Hye-hwa Kim ),조성희 ( Seong-hee Cho ) 대한한방부인과학회 2016 大韓韓方婦人科學會誌 Vol.29 No.4
Objectives: The purpose of this study is to evaluate the effects of Korean traditional treatments for Climacteric Syndrome Patients with Hwa-Byung. Methods: From February 2015 to May 2015, We treated 5 Cases Patients with Korean traditional treatments for a month. We measured treatment effects by Menopause Rating Scale (MRS), Beck`s Depression Inventory (BDI), Visual Analogue Scale (VAS) and Digital Infrared Thermal Imaging (DITI). Results: After treatment, First, the scores of MRS, BDI were decreased. Second, the symptoms such as hot flush, pantalgia, palpitation, insomnia, fatigue were significantly improved. Also, the difference of ?中 (CV17, Danjung) and 關元 (CV4, Guanyuan) temperatures were significantly decreased after treatment. Conclusions: This study suggests that Korean traditional treatments such as Gamicheonglijagam-hwan, acupuncture, moxibustion are effective on Climacteric Syndrome Patients with Hwa-Byung.
유현철,김정섭,곽명화,윤철종,이희인,박승조 동아대학교 환경문제연구소 2001 硏究報告 Vol.24 No.1
Problems of wastes that pigs produce are increasing rapidly in the hog raising industry nowadays. consequently, the generation volume of excreta also is increasing but most of that is not disposed appropriately and exposed in eco-system therefore the disposal of stock excreta is becoming more and more serious. considering the physical and chemical characteristics of livestock excreta, the pollution loading rate - BOD, COD etc. - is very high. as alternative plan, that is, as one method kind of composisting, the utilization of the soil reformation agent will become one solution in managing the upper problems. also, the flyash of 3.7 million tons are producing every year and about 32.2% of that, 1.18 million ton is recycled as concrete, cement, cementassistance, road etc. consequently, the discharged flyash is not abandoned and a plan of recycling is needed acutely. gypsum of 4.16 million tons in 1998 presently was produced and about 57.2% of that, 2.38 million tons was recycled as cement, construction materials. the present stock is 25 million tons. therefore, in this study, because organic materials can be obtained in pig excreta and calciums can be obtained in gypsum, the small amount of elements can be acquired in flyash for the soil reformation agents, mixing the three materials - pig excreta, gypsum, flyash - adequately, investigated technique of making the soil reformation agents and described below in comparrision with the changes of temperature, PH TOC, T-N, TOC/T-N ratio etc.
이경화,김정섭,유현철,최성우,윤철종,우성훈,박승조 동아대학교 환경문제연구소 2001 硏究報告 Vol.24 No.1
Adsorption equilibrium of heavy metals ion on the peat moss was confirmed Frundlich isotherm Removal efficiency of heavy metals ion was increased from pH 2 to 10 and heavy metal removal efficiency was increased in the sequence of Cu(Ⅱ) > Pb(Ⅱ) > Cd(Ⅱ) > Mn(Ⅱ) on the PM(Peat Moss). The PM is likely to be more effective adsorption than the PAC to removal of metal ions in the solution, since PM's weakly acidic functional groups which is not founded on the PAC, in addition to its high surface area and porosity. But, the PM is not separated from the solution water by sedimentation process. So, a liquid and solid seperation between the PM and the solution water could be considered for the PM's field application. But peat moss was low cost adsorbent. Thus author propose to adopt PM as a adsorbent for heavy metal removal.
김은정,박정훈,김정섭,유현철,이봉섭,곽명화,우성훈,박승조 東亞大學校 環境問題硏究所 2005 硏究報告 Vol.27 No.1
Spent pig bone was consist of hydroxyapatite. And then we thought that it have a possibility as a adsorbent. The preparation of bone char prepared from spent pig bone in this study. We study on the recycling possibility as a adsorbent is able to adsorb copper ion from their single aqueous solutions. The results are summarized as follows. Bone char that prepared from spent pig bone at 105, 400, 700℃. The adsorption removal efficiency of copper ion onto bone char as adsorbent was above 90% for 15 hours. Increase in the initial pH of the copper ion solution result in an increase in the copper ion uptake per unit weight of the adsorbent. Freundlich isotherm model was found to be applicable for the experiment data of copper ion. The results showed that spent pig bone can be used for the absorption of the copper ion.
김영환,박정훈,김정섭,유현철,이봉섭,곽명화,우성훈,박승조 東亞大學校 環境問題硏究所 2005 硏究報告 Vol.27 No.1
This study was carried out to remove copper ion in case of activated carbon impregnated sulphur(ACS) dose and different pH using activated carbon impregnated sulphur that prepared from activated carbon at sulphur dioxide atmosphere. Removal copper ion concentration was increased as increasing the ACS dose when copper ion concentration was 10 mg/L. Optimum dose of ACS 13.3 g ACS/L and maximum removal efficiency was 93%. The results obtained from adsorption experiment in the condition of ACS optimum dose when the pH was 3, 4, 5 respectively was pH 5 was excellent.
Exposure factors of cadmium for residents in an abandoned metal mine area in Korea
Ahn, Seung Chul,Chang, Jun Young,Lee, Jung Sub,Yu, Hwa Yon,Jung, A-Ra,Kim, Jee-Young,Choi, Jong-Woo,Hong, Young-Seoub,Do Yu, Seung,Choi, Kyounghee Science and Technology Letters 2017 Environmental geochemistry and health Vol.39 No.5
<P>This study evaluated blood and urine cadmium (Cd) levels and human exposure factors for residents in an abandoned metal mine in Korea. We collected blood, urine, soil, water, and rice grain samples to analyze Cd concentrations and analyzed heavy metal concentration patterns in soil. We estimated the major exposure factor of Cd through non-carcinogenic risk assessment depending on exposure routes. The blood Cd concentration in the case group was 5.33 μg/L (geometric mean), significantly higher than that in the control group (1.63 μg/L, geometric mean). Urine Cd concentrations were also similar. The Cd concentrations in paddy soil (1.29 mg/kg) and rice grains (0.14 mg/kg) in the study area were higher than those in the control area (0.91 and 0.07 mg/kg, respectively). The analysis of heavy metal concentration in soil showed that the Cd levels in agricultural soil in the case group were attributable to the mine. The hazard quotient (HQ) of Cd by rice ingestion in the case group (1.25) was 2 times higher than that in the control group (0.6). We found that the HQ of rice ingestion contributed to more than 97 % of the total HQ, indicating that rice grains were the major exposure source. However, it is likely that the continuous intake of Cd-exposed crops led to chronic exposure among the residents in mine area.</P>
유승화 ( Seung-hwa Yu ),김영근 ( Young-keun Kim ),최용 ( Yong Choi ),최승렬 ( Seung-ryul Choi ),최덕규 ( Duck-kyu Choi ),우제근 ( Jea-keun Woo ),장현수 ( Hyun-soo Jang ),강영호 ( Young-ho Kang ),백선욱 ( Sun-wook Baek ) 한국농업기계학회 2021 한국농업기계학회 학술발표논문집 Vol.26 No.2
농작물을 심기 위해서는 파종기, 정식기 등의 농기계를 이용하나, 특히 벼 후작인 조사료나 간척지 벼와 같이 지상에서 농기계를 이용할 수 없는 경우는 배부식 동력살포기 등을 이용하여 종자를 산파하고 있다. 이 배부식 동력살포기는 작업자가 등에 짊어지고 살포해야 하므로 노동 강도가 크고 장시간 노동으로 고역작업이다. 파종, 방제 등과 같이 노동력에 의존하는 농작업의 편의성늘 높이고자 최근 급격하게 기술 발전하고 있는 드론을 농업에서도 많이 활용하고 있다. 농업용 드론은 주로 농작물의 생육 모니터링과 방제에 관련된 연구이며, 드론을 활용한 정밀 종자, 비료, 입제 등을 살포하기 위해 원판 회전식 살포기를 소형화하는 등으로 종자 정밀 파종에 관한 연구 수행은 시작 단계이다. 현재 많이 사용되고 있는 드론용 입제 살포기는 방사형으로 살포되어 한쪽으로 편중되거나 외부 바람에 의해서 지면에 골고루 살포되지 못하고 바람의 방향에 따라 특정 영역에 집중적으로 살포되는 문제가 있다. 특히 종자의 경우 편중 파종되면 농작물 생육이 불량하여 생산량 감소 및 품질 저하되고 수확작업에 많은 어려움이 있다. 이에 본 연구에서는 드론을 활용하여 종자 등을 종자 파종시 편중되지 않고 균일하게 파종하여 투입량 최소화 및 생육 극대화하며, 정밀하고 효율적으로 파종이 가능하면서 노동력 및 비용을 절감하는 드론용 균일살포식 정밀 파종기를 개발하고자 드론용 균일살포 시험 장치를 설계·제작하였다. 균일살포식 파종 시험장치는 크게 종자 투입부, 살포(흩어뿌림)부로 구분할 수 있다. 종자 투입부는 종자 호퍼에서 자중에 의해 투입되는 종자를 On/off 및 투입량 제어를 위해 스텝모터(12V, 72step, deg. 5°/step)를 장착하였다. 투입량 제어를 위해 모터의 2step씩 5단계로 구분하였다. 종자 살포부는 흩어뿌림을 위한 살포날과 회전 모터를 이용하였다. 살포날은 회전축 중심으로부터 40mm씩 좌우 대칭을 이루도록 설계하였으며, 재질은 STS 소재로 회전식 종자 충격에 내구성을 갖도록 하였다. 살포부에서 좌우로 균일하게 종자를 살포하기 위한 요인 시험을 위해 살포날의 각도를 70°, 90°, 110°fh 제작하였다. 이 살포날의 각도에 따라 종자의 살포폭과 살포날에 의한 종자 수직강하 속도, 종자 충격량 등이 결정된다. 또한 이 살포날의 회전을 위하여 기어드모터(DC 12~14V, max. 2000rpm)로 구성하였다. 이 모터의 회전 속도에 따라 종자의 수직강하 패턴과 종자의 토양 침투 깊이 등이 변화하는 요인을 갖는다. 향후 계획은 이 균일살포식 파종 시험장치를 요인별 성능 시험하고 개선 보완하고자 한다.