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전체 선택해제
총 381건 검색
본문검색 결과만 보기
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Nitrogen-doped carbon nanosheets from polyurethane foams and removal of Cr(VI)
Jiaqi Duan, Baohua Zhang, Huailin Fan, Wenzhong Shen, Shijie Qu 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2017, Vol.22 7 60-69 (10 pages)
to characterize the nitrogen-doped carbon nanosheet structure and composition. The removal of Cr(VI) by the N-doped carbon nanosheets was investigated. The results showed that the maximum removal capacity for chromium of 188 mg/g was found at pH=2.0 with PHC-Z-3. pH had an important effect on Cr(VI) removal and the optimal pH was 2.0. Moreover, amino groups and carboxyl groups in the nitrogen-doped carbon nanosheet played important roles in Cr(VI) removal, and promoted the reduction of Cr(VI) to... -
Nitrogen Removal in Column Wetlands Packed with Synthetic Fiber Treating Piggery Stormwater
Jing Cheng, Youngchul Kim 한국습지학회 한국습지학회지 8 Pages
한국습지학회 한국습지학회지 2016, Vol.18 No.1 9 68-75 (8 pages)
to the wetland was artificial stormwater. All the wetlands achieved effective removal of TSS (94%~96%), TCOD (68%~73%), TN (35%~58%), TKN (62%~73%) and NH4-N (85%~ 99%). Particularly, it was observed that COD was released from the fiber during one distinct period in all wetlands. This was probably due to the degradation of polymer fiber, and the released organic matters were found to serve as carbon source for denitrification. In addition, with longer retention time and frequent recirculation,... -
Novel Mathematical Modeling on Pilot-scale of Plug-flow Aerated Submerged Biofilm Reactor for Dissolved Organic Matter and Nitrogen Removal
Han. Youngrip, Johnson. Kraig, Hayes. Donald, Xu. Hua, Choi. Youngik 한국생물공학회 Biotechnology and bioprocess engineering 11 Pages
한국생물공학회 Biotechnology and bioprocess engineering 2013, Vol.18 No.5 989-999 (11 pages)
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Biological Nitrogen Removal System의 세균 군집 분석
김경미, 이상일, 이동훈, Kim. Kyung-Mi, Lee. Sang-Ill, Lee. Dong-Hun 한국미생물학회 미생물학회지 8 Pages
한국미생물학회 미생물학회지 2006, Vol.42 No.1 26-33 (8 pages)
질소 제거(Biological nitrogen removal; BNR) 시스템의 효율적인 처리 공정을 이재하기 위하여 질산화 반응조 내 세균 군집 구조를 16S rRNA 유전자의 PCR 및 terminal restriction fragment length polymorphism (T-RELP)방법을 이용하여 분석하였다. 본 연구에서 사용한 BNR 시스템은 국내에서 비교적 많이 적용되고 있는 부상여재를 이용한 고도처리 시스템, Nutrient Removal Laboratory 시스템, 반추기법을 이용한 영양염류 처리 Sequencing Batch Reactor (SBR)시스템이었고, 실험 결과 모든 시료에서 암모니아 산화 세균과... -
Optimization of Operation Conditions for Improving the Nitrogen Removal Efficiency in Wastewater Treatment Plant
최은희, 브람 클라벡, 마타이 오스터하우스, Choi. Eun-Hee, Bram. Klapwijk, Mathijs. Oosterhuis 한국농공학회 한국농공학회논문집 7 Pages
한국농공학회 한국농공학회논문집 2010, Vol.52 No.1 25-31 (7 pages)
TN(Total Nitrogen)농도를 방류수 수질기준인 각각 4 mg/L와 10 mg/L에 맞추기 위한 최적의 운전조건을 도출하기 위해 다양한 제어시스템이 시뮬레이션 되었다. 본 연구에 사용된 모델은 IWA(International Water Association) 활성슬러지 모델 No.1 (ASM No.1)이었고, GPS-X가 시뮬레이터로 사용되었다. 모델링을 위한 매개변수 민감도 분석결과 ASM No.1의 총 19개 매개변수 중 8개 변수 ($Y_H$, ksh, koh, $b_H$, ${mu}_a$, $k_{NA}$, kh, ka)가 방류수 수질에 영향을 미치는 것으로 조사되었고 이들 매개변수에 대해 보정을 수행하여... -
Catheter-guided percutaneous heartworm removal using a nitinol basket in dogs with caval syndrome
Won-Kyoung Yoon, Donghyun Han, Changbaig Hyun 대한수의학회 Journal of Veterinary Science 3 Pages
대한수의학회 Journal of Veterinary Science 2011, 제 12권 제 2호 15 199-201 (3 pages)
clinical signs. Several non-surgical and interventional methods are currently used for mechanical worm removal. However, the success rate and complications related to these methods are heavily dependent on methodology and retrieval devices used. In this study, we developed a catheter-guided heartworm removal method using a retrieval basket that can easily access pulmonary arteries and increase the number of worms removed per procedure. With this technique, we successfully treated four dogs with... -
Percutaneous heartworm removal from dogs with severe heart worm (Dirofilaria immitis) infestation
Seung-Gon Lee, Hyeong-Sun Moon, Changbaig Hyun* 대한수의학회 Journal of Veterinary Science 6 Pages
대한수의학회 Journal of Veterinary Science 2008, 제 9권 제 2호 11 197-202 (6 pages)
immune reaction caused by rapid killing of the adult worm. Surgical removal and an interventional method using flexible alligator forceps have been well described in the literature. Despite the usefulness of mechanical removal using flexible alligator forceps, the methodology still needs to be upgraded for increasing the applicability for treating dogs with severe infestation. We describe herein a newly developed percutaneous removal method for heartworms and this was successfully applied to 4... -
The Study of NOx Removal Efficiency by NH3 over V2O5/TiO2
Keon Joo Lee 한국열환경공학회 한국열환경공학회 학술대회지 3 Pages
한국열환경공학회 한국열환경공학회 학술대회지 2015년 춘계 35 284-286 (3 pages)
The selective catalytic reduction (SCR) reaction of promoter catalysts was investigated in this study. TiO2 of pure anatase type was used as support. Activation measurement of prepare catalysts practiced on a fixed reactor packing by the glass bead after fill up catalysts in 1/4 inch stainless tube. The reaction temperature was measured by K-type thermocouple and catalyst was heated by electric furnace. The standard compositions of the simulated flue gas mixture in this study were as follows :... -
Removal of chromium from tannery wastewater by electrosorption on carbon prepared from peach stones: effect of applied potential
Mounir Ziati, Fariza Khemmari, Mohamed Kecir, Sabir Hazourli 한국탄소학회 Carbon Letters 5 Pages
한국탄소학회 Carbon Letters 2017, Vol.21 10 81-85 (5 pages)
is the removal of chromium from tannery wastewater by electrosorption on carbon prepared from lignocellulosic natural residue "peach stones' thermally treated. The followed steps for obtaining coal in chronological order were: cleaning, drying, crushing and finally its carbonization at 900°C. The characterization of the carbon material resulted in properties comparable to those of many coals industrially manufactured. The study of the dynamic adsorption of chromium on the obtained material... -
Nanoporous carbon synthesized from grass for removal and recovery of hexavalent chromium
Shahin A. Pathan, Nancy S. Pandita 한국탄소학회 Carbon Letters 9 Pages
한국탄소학회 Carbon Letters 2016, Vol.20 2 10-18 (9 pages)
transmission electron microscopy, and Energy Dispersive X-ray microanalysis. Acid functionalized nanoporous carbon was explored for use in removal of toxic Cr(VI) ions from aqueous media. An adsorption study was done as a function of initial concentration, pH, contact time, temperature, and interfering ions. The experimental equilibrium data fits well to Langmuir isotherm model with maximum monolayer adsorption capacity of 35.335 mg/g. The results indicated that removal obeys a... -
Adsorptive removal of atmospheric pollutants over Pyropia tenera chars
Heejin Lee, Rae-su Park, Hyung Won Lee, Yeojin Hong, Yejin Lee, Sung Hoon Park, Sang-Chul Jung, Kyung-Seun Yoo, Jong-Ki Jeon, Young-Kwon 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2016, Vol.19 10 79-88 (10 pages)
a replacement for activated carbon, biochar was synthesized and used for the adsorptive removal of formaldehyde and nitrogen oxide. Biochar was produced from the fast pyrolysis of the red marine macro alga, Pyropia tenera. The P. tenera char was then activated with steam, ammonia and KOH to alter its characteristics. The adsorption of formaldehyde, which is one of the main indoor air pollutants, onto the seaweed char was performed using 1-ppm formaldehyde and the char was activated using a range... -
Influence of Nitrogen moieties on CO2 capture of Carbon Aerogel
Da-Hee Jeon, Byung-Gak Min, Jong Gab Oh, Changwoon Nah and Soo-Jin Park 한국탄소학회 Carbon Letters 5 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.1 9 57-61 (5 pages)
a porous carbon material possessing high porosity and high specific surface area. Nitrogen doping reduced the specific surface area and micropores, but it furnished basic sites to improve the CO2 selectivity. In this work, N-doped carbon aerogels were prepared with different ratios of resorcinol/melamine by using the sol-gel method. The morphological properties were characterized by scanning electron microscopy (SEM). Nitrogen content was studied by X-ray photoelectron spectroscopy (XPS) and the... -
Overlook of carbonaceous adsorbents and processing methods for elemental mercury removal
Kyong-Min Bae, Byung-Joo Kim and Soo-Jin Park 한국탄소학회 Carbon Letters 9 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.4 2 238-246 (9 pages)
People have been concerned about mercury emissions for decades because of the extreme toxicity, persistence, and bioaccumulation of methyl Hg transformed from emitted Hg. This paper presents an overview of research related to mercury control technology and identifies areas requiring additional research and development. It critically reviews measured mercury emissions progress in the development of promising control technologies. This review provides useful information to scientists and engineers... -
Removal of deltamethrin insecticide over highly porous
A. F. Hassan, A.M. Youssef, P. Priecel 한국탄소학회 Carbon Letters 9 Pages
한국탄소학회 Carbon Letters 2013, Vol.14 No.4 6 234-242 (9 pages)
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Electrochemical Removal Efficiency of Pollutants on ACF Electrodes
Won-Chun Oh, Joung-sung Park, Ho-Jin Lee, Min-Hyung Yum 한국탄소학회 Carbon Letters 6 Pages
한국탄소학회 Carbon Letters 2004, Vol.5 No.4 6 191-196 (6 pages)
흡착질로서의 활성탄은 오 폐수로부터 색도 제거, 식품산업에서 냄새제거, 석유정제산업에서 탈황, 용매나 기체 가스의 정체 등과 같은 공기나 액체 정화 분야에서 다른 물질을 대체하여 사용하여 왔다. 한편 섬유상 활성탄인 활성 탄소 섬유는 최근 몇 년 동안 흡착 분야 뿐만 아니라, 양질의 생산품을 만들어 내기 위한 촉매기술 및 촉매 지자체 분야에서 방대하게 사용 되어져 오고 있다. -
혐기성 회분식 배양에서 양돈폐수의 NH$_4$-Nitrogen이 혐기성 미생물에 미치는 영향
김연옥 한국미생물생명공학회 산업미생물학회지 6 Pages
한국미생물생명공학회 산업미생물학회지 1998, Vol.26 No.2 173-178 (6 pages)
본 연구에서는 양돈폐수의 생물학적 처리의 난점 중 하나인 NH$_4$-N이 혐기성 미생물에 미치는 영향을조사하기 위해 폐수를 여러 가지 비율로 희석하여 혐기성 회분식 배양을 시도하였으며 COD제거율과 NH$_4$-N의 농도를 측정 비교하였다. 또한 MgO를 첨가하여 폐수내의 NH$_4$-N를 $MgNH_4PO_4{cdot}6H_2O$의 결정체로 형성시킨 후 침전 제거하고 같은 조건에서 배양하였다. 3개월 이상 원폐수에서 적응된 master culture는 75%의 폐수와 25%의 희석수에서 빠른 COD 제거율을 보였으며, MAP법으로 NH$_4$-N를 60% 제거한 폐수에서는... -
Increased Microalgae Growth and Nutrient Removal Using Balanced N:P Ratio in Wastewater
Lee. Seung-Hoon, Ahn. Chi-Yong, Jo. Beom-Ho, Lee. Sang-Ah, Park. Ji-Yeon, An. Kwang-Guk, Oh. Hee-Mock 한국미생물생명공학회 Journal of microbiology and biotechnology 7 Pages
한국미생물생명공학회 Journal of microbiology and biotechnology 2013, Vol.23 No.1 92-98 (7 pages)
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Efficiency Evaluation of Adsorbents for the Removal of VOC and NO2 in an Underground Subway Station
Son. Youn-Suk, Kang. Young-Hoon, Chung. Sang-Gwi, Park. Hyun-Ju, Kim. Jo-Chun 한국대기환경학회 Asian journal of atmospheric environment 8 Pages
한국대기환경학회 Asian journal of atmospheric environment 2011, Vol.5 No.2 113-120 (8 pages)
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Effects of Fermented Leachate of Food Waste (FLFW) and Temperature on Nutrient Removal in Sequencing Batch Reactor
Roh. Sung-Hee, Chun. Young-Nam, Lee. Sook-Young, Cheong. Hyeon-Sook, Lee. Jae-Wook, Kim. Sun-Il 대한환경공학회 Environmental engineering research 7 Pages
대한환경공학회 Environmental engineering research 2008, Vol.13 No.3 155-161 (7 pages)
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Correlation between hypoxia inducible factor-1α and Calbindin-D9k
Song Ai Kang, Eui Bae Jeung 대한수의학회 대한수의학회 학술대회발표집 2 Pages
대한수의학회 대한수의학회 학술대회발표집 추계학술심포지움 237 323-324 (2 pages)
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Tibial dyschondroplasia is closely related to suppression of expression of hypoxia-inducible factors 1α, 2α, and 3α in chickens
Shucheng Huang, Mujeeb U. Rehman, Gang Qiu, Houqiang Luo, Muhammad K. Iqbal, Hui Zhang, Khalid Mehmood, Jiakui Li 대한수의학회 Journal of Veterinary Science 9 Pages
대한수의학회 Journal of Veterinary Science 2018, 제 19권 제 1호 14 107-115 (9 pages)
Tibial dyschondroplasia (TD) cases has not been reported in Tibetan chickens (TBCs), but it is commonly seen in commercial broilers characterized by lameness. The underlying mechanism remains unclear. Hypoxia-inducible factors (HIFs) are important regulators of cellular adaptation to hypoxic conditions. In this study, we investigated the role of HIF-1α, -2α, and -3α in hypoxia and thiram-induced TD and their effect on tibial growth plate development in Arbor Acres chickens (AACs) and TBCs.... -
Establishment of hydrochloric acid/lipopolysaccharide-induced pelvic inflammatory disease model
Yeonsu Oh, Jaehun Lee, Hyeon-Cheol Kim, Tae-Wook Hahn, Byung-Il Yoon, Jeong-Hee Han, Yong-Soo Kwon, Joung Jun Park, Deog-Bon Koo 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2016, 제 17권 제 3호 20 413-419 (7 pages)
Pelvic inflammatory disease (PID), which is one of the most problematic complications experienced by women with sexually transmitted diseases, frequently causes secondary infections after reproductive abnormalities in veterinary animals. Although the uterus is self-protective, it becomes fragile during periods or pregnancy. To investigate PID, bacteria or lipopolysaccharide (LPS) extracted from gram negative bacteria has been used to induce the disease in several animal models. However, when LPS... -
The role of rpoS, hmp, and ssrAB in Salmonella enterica Gallinarum and evaluation of a triple-deletion mutant as a live vaccine candidate in Lohmann layer chickens
Youngjae Cho, Yoon Mee Park, Abhijit Kashinath Barate, So-Yeon Park, Hee Jeong Park, Mi Rae Lee, Quang Lam Truong, Jang Won Yoon 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2015, 제 16권 제 2호 8 187-194 (8 pages)
Salmonella enterica Gallinarum (SG) causes fowl typhoid (FT), a septicemic disease in avian species. We constructed deletion mutants lacking the stress sigma factor RpoS, the nitric oxide (NO)-detoxifying flavohemoglobin Hmp, and the SsrA/SsrB regulator to confirm the functions of these factors in SG. All gene products were fully functional in wild-type (WT) SG whereas mutants harboring single mutations or a combination of rpoS, hmp, and ssrAB mutations showed hypersusceptibility to H2O2, loss... -
Effect of superovulation on uterine and serum biochemical parameters and its potential association with transferable embryos in Holstein dairy cows
Hasina Santatriniaina Rasolomboahanginjatovo, Younès Chorfi*, Raynald Dupras, Louis Mills, Réjean Lefebvre 대한수의학회 Journal of Veterinary Science 9 Pages
대한수의학회 Journal of Veterinary Science 2014, 제 15권 제 2호 14 273-281 (9 pages)
The objective of this study was to determine the effects of superovulation (SOV) on serum and uterine biochemical parameters, uterine bacteriology and cytology and number of transferable embryos (TE). Dairy cows were placed on a Presynch/CIDR Synch protocol. The SOV group was superovulated, induced in estrus, and inseminated, whereas the control group was induced in estrus and inseminated without SOV. Uterine bacteriology and cytology and uterine and serum biochemical parameters were measured at... -
Quantitation of meloxicam in the plasma of koalas (Phascolarctos cinereus) by improved high performance liquid chromatography
Benjamin Kimble, Kong Ming Li, Merran Govendir* 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2013, 제 14권 제 1호 2 7-14 (8 pages)
An improved method to determine meloxicam (MEL) concentrations in koala plasma using reversed phase high performance liquid chromatography equipped with a photo diode array detector was developed and validated. A plasma sample clean-up step was carried out with hydrophilic- lipophilic copolymer solid phase extraction cartridges. MEL was separated from an endogenous interference using an isocratic mobile phase [acetonitrile and 50 mM potassium phosphate buffer (pH 2.15), 45：55 (v：v)] on a... -
Prolonged expression of senescence markers in mice exposed to gamma-irradiation
Min-A Seol, Uhee Jung*, Hyeon Soo Eom, Seol-Hwa Kim, Hae-Ran Park, Sung-Kee Jo 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2012, 제 13권 제 4호 1 331-338 (8 pages)
Although ionizing radiation is known to induce cellular senescence in vitro and in vivo, its long-term in vivo effects are not well defined. In this study, we examined the prolonged expression of senescence markers in mice irradiated with single or fractionated doses. C57BL/6 female mice were exposed to 5 Gy of γ-rays in single or 5, 10, 25 fractions. At 2, 4, and 6 months after irradiation, senescence markers including mitochondrial DNA (mtDNA) common deletion, p21, and senescence-associated...
