Jonathan Schoenfield, Yunho Hwang, Rienhard Radermacher,
... acknowledged. Jonathan Schoenfeld, Associate Member ASHRAE, is Engineer. Yunho Hwang, PhD, Member ASHRAE, is Research Associate Professor. ...
Tópico(s): Heat Transfer and Optimization
2012 - Taylor & Francis | HVAC&R Research
Jun Cui, Yiming Wu, Jan Muehlbauer, Yunho Hwang, Reinhard Radermacher, Sean Fackler, Manfred Wuttig, Ichiro Takeuchi,
... Site Citation Jun Cui, Yiming Wu, Jan Muehlbauer, Yunho Hwang, Reinhard Radermacher, Sean Fackler, Manfred Wuttig, Ichiro ...
Tópico(s): Thermal Expansion and Ionic Conductivity
2012 - American Institute of Physics | Applied Physics Letters
Eun Soo Kim, Kyeong Ok Kim, Byung Ik Jang, Chang Kyun Lee, Hyo Jong Kim, Kang‐Moon Lee, You Sun Kim, Chang Soo Eun, Sung-Ae Jung, Suk‐Kyun Yang, Jun Lee, Tae Oh Kim, Yunho Jung, Geom Seog Seo, Soon Man Yoon,
... Suk-Kyun Yang, Jun Lee, Tae-Oh Kim, Yunho Jung, Geom Seog Seo, Soon Man Yoon, and ...
Tópico(s): Mycobacterium research and diagnosis
2015 - Korean Association for the Study of the Liver | Gut and Liver
Jae Myung, Jeong Seop Moon, Il-Kwun Chung, Jin Oh Kim, Jong Pil Im, Yu Kyung Cho, Hyun Gun Kim, Sang Kil Lee, Hang Lak Lee, Jae Young Jang, Eun Sun Kim, Yunho Jung, Chang Mo Moon, Yeol Kim, Bo Young Park,
... Lak Lee, Jae Young Jang, Eun Sun Kim, Yunho Jung, Chang Mo Moon, Yeol Kim, and Bo ...
Tópico(s): Esophageal and GI Pathology
2016 - Korean Association for the Study of the Liver | Gut and Liver
Jae Yun Kim, Gyu Bong Ko, Tae Hoon Lee, Sang‐Heum Park, Yun Nah Lee, Young Sin Cho, Yunho Jung, Il‐Kwun Chung, Hyun Jong Choi, Sang‐Woo Cha, Jong Ho Moon, Young Deok Cho, Sun‐Joo Kim,
... Heum Park, Yun Nah Lee, Young Sin Cho, Yunho Jung, Il-Kwun Chung, Hyun Jong Choi, Sang- ...
Tópico(s): Pancreatic and Hepatic Oncology Research
2017 - Korean Association for the Study of the Liver | Gut and Liver
Younghak Cho, Dae Ho Kim, Jae Myung, Yoon Tae Jeen, Jeong Seop Moon, Jin Oh Kim, Sang Kil Lee, Yu Kyung Cho, Jong Pil Im, Jae Young Jang, Jeong Eun Shin, Soon Man Yoon, Yunho Jung, Eun Sun Kim, Kang Nyeong Lee, Soo‐Jeong Cho, Yeol Kim, Bo Young Park,
... Young Jang, Jeong Eun Shin, Soon Man Yoon, Yunho Jung, Eun Sun Kim, Kang Nyeong Lee, Soo- ...
Tópico(s): Colorectal and Anal Carcinomas
2017 - Korean Association for the Study of the Liver | Gut and Liver
Yunho Lee, David L. Sedlak, Urs von Gunten,
... Science and Technology, Gwangju 61005, South KoreaMore by Yunho Leehttps://orcid.org/0000-0001-5923-4897, David ...
Tópico(s): Environmental remediation with nanomaterials
2023 - American Chemical Society | Environmental Science & Technology
Huan He, Peiran Zhou, Kyle K. Shimabuku, Xuzhi Fang, Shu Li, Yunho Lee, Michael C. Dodd,
... Xuzhi Fang, Shu LiShu LiMore by Shu Li, Yunho LeeYunho LeeMore by Yunho Leehttp://orcid.org/0000-0001-5923-4897, and ...
Tópico(s): Water Treatment and Disinfection
2020 - American Chemical Society | Environmental Science & Technology
Jae Hee Han, Hyun Gun Kim, Eu Mi Ahn, Suyeon Park, Seong Ran Jeon, Jae Myung, Min Seob Kwak, Yunho Jung, Jeong Eun Shin, Hyun Deok Shin, Young‐Seok Cho,
... Ran Jeon, Jae Myung Cha, Min Seob Kwak, Yunho Jung, Jeong Eun Shin, Hyun Deok Shin, and ...
Tópico(s): Colorectal Cancer Surgical Treatments
2021 - Korean Association for the Study of the Liver | Gut and Liver
Yunho Lee, Saskia Gisela Zimmermann, Anh Trung Kieu, Urs von Gunten,
A novel technology for enhanced municipal wasterwater treatment was assessed based on the dual functions of Fe(VI) to oxidize micropollutants and remove phosphate by formation of ferric phosphates. Second-order rate constants (k) for the reactions of selected pharmaceuticals, endocrine disruptors, and organic model compounds with Fe(VI) were in the range of 1 (trimethylamine) to 9000 M−1 s−1 (aniline) in the pH-range 7−8. The selected compounds contained electron-rich moieties (ERM) such as phenols, ...
Tópico(s): Phosphorus and nutrient management
2009 - American Chemical Society | Environmental Science & Technology
In this work we wish to recover an unknown image from a blurry, or noisy-blurry version. We solve this inverse problem by energyminimization and regularization. We seek a solution of the form $u + v$,where $u$ is a function of bounded variation (cartoon component), while $v$ isan oscillatory component (texture), modeled by a Sobolev function withnegative degree of differentiability. We give several results of existence and characterization of minimizers of the proposed optimization problem.Experimental ...
Tópico(s): Medical Image Segmentation Techniques
2009 - American Institute of Mathematical Sciences | Inverse Problems and Imaging
Kui‐Jae Lee, Yunho Lee, Jeyong Yoon, Seralathan Kamala‐Kannan, Seung‐Moon Park, Byung‐Taek Oh,
Zero-valent iron (ZVI) has great potential to be used as a remediation material for the removal of a wide range of pollutants from groundwater. The present study assessed the potential of ZVI for arsenic remediation by investigating (i) the removal kinetics of arsenic by ZVI in a batch reactor and (ii) the longevity of ZVI to remove arsenic in a flow-through column system which mimics the permeable reactive barrier (PRB) technology. Results of the batch experiments showed an effective removal (99.5%) ...
Tópico(s): Heavy Metal Exposure and Toxicity
2009 - Taylor & Francis | Environmental Technology
Yunho Lee, Sejong Oh, Woojun Park,
To identify genes essential to biofilm formation in Pseudomonas putida KT2440, 12 mutants defective in oxidative stress-related or metabolic pathway-related genes were evaluated. Of them, only the dsbA mutant lacking the disulfide bond isomerase exhibited significantly increased attachment to the polystyrene surface. Visual evaluation by extracellular matrix staining and scanning electron microscopy indicated that the KT2440-DeltadsbA strain displays enhanced extracellular matrix production, rugose ...
Tópico(s): Oral microbiology and periodontitis research
2009 - Oxford University Press | FEMS Microbiology Letters
Ga Young Park, Yunho Lee, Dong-Heon Lee, Julia S. Woertink, Amy A. Sarjeant, Edward I. Solomon, Kenneth D. Karlin,
[(ANS)CuI(CH3CN)]+ reacts with O2 giving [{(ANS)CuII}2(μ-η2:η2-O22−)]2+, νO–O = 731 cm−1, shown to possess S-thioether ligation, based on comparisons with analogues having all N-ligands or a –S(Ph) group. The finding is a rare occurrence and new for side-on O22− binding.
Tópico(s): Magnetism in coordination complexes
2009 - Royal Society of Chemistry | Chemical Communications
Yunho Lee, Ga Young Park, Heather R. Lucas, P. Vajda, Kaliappan Kamaraj, M.A. Vance, A.E. Milligan, Julia S. Woertink, Maxime A. Siegler, Amy A. Sarjeant, Lev N. Zakharov, Arnold L. Rheingold, Edward I. Solomon, Kenneth D. Karlin,
Cuprous and cupric complexes with the new imidazolyl containing tripodal tetradentate ligands {LMIm, (1H-imidazol-4-yl)-N,N-bis((pyridin-2-yl)methyl)methanamine, and LEIm, 2-(1H-imidazol-4-yl)-N,N-bis((pyridin-2-yl)methyl)ethanamine}, have been investigated to probe differences in their chemistry, especially in copper(I)−dioxygen chemistry, compared to that already known for the pyridyl analogue TMPA, tris(2-pyridyl)methyl)amine. Infrared (IR) stretching frequencies obtained from carbon monoxide adducts ...
Tópico(s): Porphyrin and Phthalocyanine Chemistry
2009 - American Chemical Society | Inorganic Chemistry
Nicholas Fernandez, Yunho Hwang, Reinhard Radermacher,
A CO2 heat pump water heater breadboard facility was built and a performance evaluation was conducted to investigate the effect of ambient temperature and hot water temperature on the overall coefficient of performance (COP) during full tank heating tests in three scenarios typical of residential water heating. Results show that the overall COP was maximized at higher ambient temperatures and at lower hot water temperatures. The overall COP was 30% higher for heating a full tank of cold water than ...
Tópico(s): Heat Transfer and Optimization
2009 - Elsevier BV | International Journal of Refrigeration
Tolga N. Aynur, Yunho Hwang, Reinhard Radermacher,
In this study, simulation of a variable air volume (VAV) air conditioning system in an existing office building is presented for the cooling mode. A building simulation package was used for the simulation [DOE, EnergyPlus Engineering Document, Version 1.3., U.S. Department of Energy, Washington, DC, 2005]. The design information of the existing office building, the actual number of the internal load sources such as occupants, lighting, office equipments and the manufacturer's data for the existing ...
Tópico(s): Wind and Air Flow Studies
2009 - Elsevier BV | Energy and Buildings
Chang Bum Byun, Kan-woo Youn, Kyunghee Jung‐Choi, Yunho Cho, Domyung Paek,
Tópico(s): Workplace Violence and Bullying
2009 - | Korean Journal of Occupational and Environmental Medicine
Tolga N. Aynur, Yunho Hwang, Reinhard Radermacher,
Integration of the variable refrigerant flow (VRF) and heat pump desiccant (HPD) systems was investigated in a field performance test for a heating season. The HPD systems use only the moisture in the outdoor air and return air to humidify the indoors during ventilation in the heating season. Three different operating modes: non-ventilated, HPD ventilation assisted and HPD ventilation–humidification assisted VRF systems were investigated. It was found that the VRF systems provided an average of 93. ...
Tópico(s): Solar Energy Systems and Technologies
2009 - Elsevier BV | Energy and Buildings
Paul Kalinowski, Yunho Hwang, Reinhard Radermacher, Saleh Al Hashimi, Peter Rodgers,
The recovery process of the liquefied natural gas requires low temperature cooling, which is typically provided by the vapor compression refrigeration systems. The usage of an absorption refrigeration system powered by waste heat from the electric power generating gas turbine could provide the necessary cooling at reduced overall energy consumption. In this study, a potential replacement of propane chillers with absorption refrigeration systems was theoretically analyzed. From the analysis, it was ...
Tópico(s): Refrigeration and Air Conditioning Technologies
2009 - Elsevier BV | International Journal of Refrigeration
Tolga N. Aynur, Yunho Hwang, Reinhard Radermacher,
Performance of two widely used air conditioning (AC) systems, variable air volume (VAV) and variable refrigerant flow (VRF), in an existing office building environment under the same indoor and outdoor conditions for an entire cooling season is simulated by using two validated respective models and compared. It was observed that the indoor temperatures could not be maintained properly at the set temperature by the VAV no-reheat boxes. However, it could be maintained by the VAV boxes with reheat with ...
Tópico(s): Adsorption and Cooling Systems
2009 - Elsevier BV | Energy and Buildings
Matthew T. Whited, Neal P. Mankad, Yunho Lee, P.F. Oblad, Jonas C. Peters,
The tetradentate tris(phosphino)silyl ligand [SiPiPr3] ([SiPiPr3] = [Si(o-C6H4PiPr2)3]−) has been prepared, and its complexation with iron, cobalt, nickel, and iridium precursors has been explored. Several coordination complexes have been thoroughly characterized and are described. These include, for example, the divalent trigonal bipyramidal metal chlorides [SiPiPr3]M−Cl (M = Fe, Co, Ni), as well as the monovalent dinitrogen adducts [SiPiPr3]M−N2 (M = Fe, Co, Ir), which are compared with related [SiPPh3]M−Cl ...
Tópico(s): Magnetism in coordination complexes
2009 - American Chemical Society | Inorganic Chemistry
Kai Wang, Magnus Eisele, Yunho Hwang, Reinhard Radermacher,
Due to the environmental damage caused by HFC refrigerants, there is an increasing universal interest to research environmentally friendly fluids in refrigerants and alternative approaches to the traditional DX refrigeration system. These refrigerants include ammonia, carbon dioxide, hydrocarbon, R152a and HFO1234yf. Major drawbacks of these refrigerants are their potential flammability and safety hazards. One way to overcome this issue is to use the new refrigerants in conjunction with a secondary ...
Tópico(s): Adsorption and Cooling Systems
2009 - Elsevier BV | International Journal of Refrigeration
Yunho Lee, Eun-Kyung Park, Young Seok Park, Kyu‐Won Shim, Joong-Uhn Choi, Dong-Seok Kim,
Tópico(s): Spinal Dysraphism and Malformations
2009 - Springer Science+Business Media | Child s Nervous System
Jiazhen Ling, Yunho Hwang, Reinhard Radermacher,
The advantage of separating sensible and latent cooling (SSLC) via the use of separate cycles is saving energy by raising the evaporating temperature of the sensible cooling process. In this study, the pertinent characteristics of the SSLC system using two parallel vapor compression cycles were investigated. The requirement for high air flow rate through the sensible evaporator was the most important hardware design issue, since it might lead to a high air-side pressure drop. To address this issue, ...
Tópico(s): Heat Transfer and Boiling Studies
2009 - Elsevier BV | International Journal of Refrigeration
Chemical oxidation processes have been widely applied to water treatment and may serve as a tool to minimize the release of micropollutants (e.g. pharmaceuticals and endocrine disruptors) from municipal wastewater effluents into the aquatic environment. The potential of several oxidants for the transformation of selected micropollutants such as atenolol, carbamazepine, 17α-ethinylestradiol (EE2), ibuprofen, and sulfamethoxazole was assessed and compared. The oxidants include chlorine, chlorine dioxide, ...
Tópico(s): Water Treatment and Disinfection
2009 - Elsevier BV | Water Research
Tolga N. Aynur, Yunho Hwang, Reinhard Radermacher,
In this study, a novel self-regenerating electric vapor compression heat pump desiccant (HPD) unit operated in the heating and humidification mode during the winter season is introduced. The HPD unit was installed in an office suite for the field test. The performance of the HPD unit and the provided indoor conditions were measured over a wide range of operating conditions. The target indoor humidity ratio was set to 4.4 g/kg, which is the minimum required indoor humidity ratio for a comfortable ...
Tópico(s): Urban Heat Island Mitigation
2009 - Elsevier BV | Energy and Buildings
In today’s information society, flash memory has become a virtually indispensable component, particularly for mobile devices. In order for mobile devices to operate successfully, it is essential that flash memory be controlled correctly through file system software. However, as is typical for embedded software, conventional testing methods often fail to detect hidden flaws in the software due to the difficulty of creating effective test cases. As a different approach, model checking techniques guarantee ...
Tópico(s): Advanced Data Storage Technologies
2009 - Springer Science+Business Media | Lecture notes in computer science
Xudong Wang, Yunho Hwang, Reinhard Radermacher,
Refrigerant vapor-injection technique has been well justified to improve the performance of systems in refrigeration applications. However, it has not received much attention for air conditioning applications, particularly for air conditioning in hot climates and for heat pumping in cold climates. In this study, the performance of an 11 kW R410A heat pump system with a two-stage vapor-injected scroll compressor was experimentally investigated. The vapor-injected scroll compressor was tested with ...
Tópico(s): Heat Transfer and Boiling Studies
2009 - Elsevier BV | International Journal of Refrigeration
We developed the AJBL6 transforming growth factor-beta 1 (TGF-β1) heterozygous (HT) mouse by mating A/J mice with C57BL/6 TGF-β1 HT mice that shows increased carcinogen-induced lung lesions with decreased latency to examine progressive events in lung tumorigenesis. Mouse cDNA macroarrays were used to identify cell cycle genes that are differentially regulated in ethyl carbamate-induced lung adenocarcinomas compared with normal lung tissue in AJBL6 TGF-β1 HT mice using probes that were generated from ...
Tópico(s): TGF-β signaling in diseases
2002 - Oxford University Press | Carcinogenesis