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Batsaikhan Bat-Erdene,Sergelen Orgoi,Erdene Sandag,Ulzii-Orshikh Namkhai,Bat-Ireedui Badarch,Batsaikhan Batsuuri 한국간담췌외과학회 2016 한국간담췌외과학회지 Vol.20 No.3
The sinusoidal obstructive syndrome (SOS) is a complication that usually follows hematopoietic stem cell transplantation. It is also known as veno-occlusive disease, which is a rare complication of living donor liver transplantation (LDLT). Herein, we reported a 34 year-old female patient presenting SOS after LDLT. Its underlying cause was presumed to be associated with liver abscess and subsequent inferior vena cava stenosis. SOS led to graft failure, thus requiring retransplantation with a deceased donor liver graft. The underlying causes of SOS are complex pathologic entity with multifactorial etiology. It is likely that its multifactorial etiology includes a decrease of hepatic venous outflow that is caused by graft liver infection and inferior vena cava stenosis.
Settling velocity of irregularly shaped particles in Newtonian fluids
Bat-Erdene Davaadorj,이재령,김영진 한국자원공학회 2013 Geosystem engineering Vol.16 No.3
This work explores the expression of irregularly shaped particles in Newtonian fluids. Ta2O5 and Nb2O5 particles, with sizes ranging from 42 to 141 mm, were settled in Newtonian fluids placed in cylindrical tubes of different inner diameters (20–50 mm). The formula proposes an explicit relationship between the cylindrical tube diameter and settling velocity of irregularly shaped particles in Newtonian fluids.
토양 및 수질 오염의 실태 및 원인 분석: 몽골 울란바토르 게르지역의 위기관리를 중심으로
( Bat-erdene Ganchimeg ),이재은 ( Jae Eun Lee ) 동의대학교 지방자치연구소 2021 공공정책연구 Vol.38 No.2
이 연구에서는 울란바토르 게르지역에서의 토양과 수질 오염의 실태와 원인 분석을 통해 개선방안을 제시하는데 목적이 있다. 울란바토르의 토양 및 수질오염은, 도시 인구의 60%가 살고 있는 게르지역에서 생긴 고형폐기물 및 액체폐기물이 주된 오염 원인으로 간주된다. 게르지역 시민의 95%가 일반 구덩이 화장실을 사용함으로써 세균오염은 주변 토양 및 지하수를 오염시킬 위험이 되고 있다. 주요 개선 방안은 다음과 같다. 첫째, 우선적으로 해결해야 할 문제는 게르지역의 시민들이 사용하고 있는 위생시설을 개선하는 것이 필요하다. 토양오염을 유발시키지 않는 친환경 화장실 정보와 시행기관 사업자의 시민에 대한 교육 및 홍보가 필요하다. 둘째, 울란바토르 시와 게르지역의 고형폐기물 또는 액체폐기물은 토양과 수질오염에 직접적인 영향을 주기 때문에 분리수거 및 처리에 대한 적극적인 모니터링이 필요하다. 셋째, 울란바토르와 가까운 지역에 위치한 금, 석탄 광산의 폐수처리 관리를 위한 법적 제도를 마련해야 한다. 울란바토르에 위치하는 가족공장, 세차장, 울란바토르 시에서 멀지 않은 금 석탄 공장들의 폐수처리 등으로 오염이 유출되며 울란바토르의 토양오염, 지하수 수질오염, 게다가 강물 오염이 나타나고 있기 때문이다. The purpose of this study is to suggest improvement measures by analyzing the current status and causes of soil and water pollution in the ger area of Ulaanbaatar, Mongolia. In the case of soil and water pollution in Ulaanbaatar, solid waste and liquid waste generated in the ger area, where 60% of the city’s population live, are considered the main sources of pollution. As 95% of the citizens of the ger area use the general pit toilet, bacterial contamination poses a risk of contaminating the surrounding soil and groundwater. The main improvement measures are as follows. First, it is necessary to improve the sanitation facilities used by the citizens of the ger area as the first problem to be solved. Information on eco-friendly toilets that do not cause soil contamination and education and publicity for the citizens of the implementing agencies and operators are necessary. Second, since solid waste or liquid waste in Ulaanbaatar and Ger has a direct impact on soil and water pollution, active monitoring for separate collection and treatment is required. Third, it is necessary to prepare a legal system for wastewater treatment management of gold and coal mines located near Ulaanbaatar. This is because pollution is leaked from the wastewater treatment of a family factory located in Ulaanbaatar, a car wash, and a gold coal factory not far from Ulaanbaatar, causing soil pollution, groundwater pollution, and river water pollution in Ulaanbaatar.
Cell equalizer for recycling batteries from hybrid electric vehicles
Bat-Orgil, Turmandakh,Dugarjav, Bayasgalan,Shimizu, Toshihisa The Korean Institute of Power Electronics 2020 JOURNAL OF POWER ELECTRONICS Vol.20 No.3
The rise of electric vehicles (EVs) and hybrid electric vehicles (HEVs) has resulted in increases in battery toxic waste. Although the powering and capacity characteristics of batteries deteriorate after use in EVs and HEVs, they usually retain enough potential for reuse as power sources in home energy systems, whose power requirements are much lower than those of EVs and HEVs. This study proposes an active cell equalizer that balances the state of charge (SOC) of nickel-metal hybrid (NiMH) batteries recycled from HEVs. In the proposed cell equalizer, two different circuits, e.g., a generation control circuit (GCC) and a power-decoupling circuit are integrated. Excessive energy is automatically transferred from a high-SOC cell to a low-SOC cell through the GCC. The power-decoupling circuit lowers the power pulsation caused by the single-phase DC/AC inverter. This reduces the low-frequency ripple current flowing into the battery pack, ensures safe operation and prolongs the lifecycle of the batteries. A prototype circuit with a three-stage battery pack is implemented in the discharging state and the obtained experimental results are analyzed to verify the equalizer functionality.
Toxic Elements in Edible Mollusks from Igneada Coasts of the Black Sea, Turkey
Bat, Levent,Sahin, Fatih,Oztekin, Aysah Korea FoodHealth Convergence Association 2018 식품보건융합연구 (KJFHC) Vol.4 No.3
In this present work, the amounts of toxic elements were determined in the soft tissues of mollusks (Mytilus galloprovincialis and Rapana venosa) collected from Igneada shores of the Black Sea where suggested as Marine Protection Area (MPA). M. galloprovincialis accumulated the highest amounts of Cd in winter, while the highest amounts of Cd and Hg were detected in R. venosa in winter and autumn. The concentrations of toxic elements found in the soft tissues of mollusks varied for Cd: 0.07-0.14, Hg: 0.03-0.44 and Pb: 0.09-0.21 mg/g dry wt. The estimated levels of all non-essential metals in the present work were lower than the limits permitted by European Community Regulation (EU) and the Turkish Food Codex (TFC). The estimated weekly intakes (EWI) and daily intakes (EDI) of all the through consumption of these seafood by Turkish people in the Igneada coasts of the Black Sea were quite below the permissible tolerable weekly/daily intakes for 70 kg person (PTWI / PTDI) set by FAO/WHO. As results, it can be concluded that no hazard effects on people health would be raised at present from the consumption of these mollusks' species.
( Bat-erdene D ),( Nyam B ),( Bayarmaa N ),( Batsukh D ) 대한간학회 2018 춘·추계 학술대회 (KASL) Vol.2018 No.1
Aims: Combination of ledipasvir (LDV)/sofosbuvir (SOF) has been approved in Mongolia for the treatment of genotype 1b hepatitis C virus (HCV) infected patients. Methods: This retrospective study analyzed 627 patients with HCV infection who were treated with LDV/SOF from February 2016 to January 2018, were retrospectively enrolled from Dornod Medical center. Virologic response was measured at 4 weeks (rapid virologic response, RVR), at 12 weeks (end of treatment response, ETR), and at 12 weeks after the end of treatment (sustained virologic response, SVR12). Safety was assessed by review of adverse events, physical examinations, and laboratory findings. Results: Of the 627 patients (male, n=282 [45%] female n=344 [55%] ; mean age, 52.7 years; liver cirrhosis 169 [27%]), 458 patients (73.0%) were chronic hepatitis, mean AST (74.4 IU/L), mean ALT (66.8 IU/L), and mean HCV RNA level (3,678,490 IU/mL). In all patient, SVR12 was achieved in 622 (99.2%). 2 patients early stopped the treatment because of headache problem, 2 patient were over 70 year old, stopped the medication due to gastrointestinal troubles. During or after DAA treatment, hepatocellular carcinoma developed in 1 patients whose age was 67 years. Conclusions: LDV/SOF treatment for HCV GT1b infected Mongolian subjects achieved very high SVR rates. However, in some older patients, HCC can develop during or after DAAs treatment.