Search Results - "Keum Hwang"

Design and Optimization of a Broadband Waveguide Magic-T Using a Stepped Conducting Cone by Cheol Hwang, Keum

“…The design of a broadband waveguide magic-T was accomplished using a genetical swarm optimization (GSO) technique. A multi-stepped, off-centered conducting…”
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Selective Hg2+ signaling via dithiane to aldehyde conversion of an ESIPT fluorophore by Chang, In Jung, Hwang, Keum Saem, Chang, Suk-Kyu

“…We herein report the development of a simple structured reaction-based probe for the fluorescence signaling of Hg2+ ions using a dithiane derivative of an…”
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Effects of non-traditional extraction methods on extracting bioactive compounds from chaga mushroom (Inonotus obliquus) compared with hot water extraction by Hwang, Ah Young, Yang, Si Chang, Kim, Jaecheol, Lim, Taehwan, Cho, Hyunnho, Hwang, Keum Taek

“…Chaga mushroom (Inonotus obliquus) is mainly consumed as an extract. Hot water extraction, which is a traditional method preparing chaga mushroom extract, has…”
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Fluorescence sensing of Ag+ ions by desulfurization of an acetylthiourea derivative of 2-(2-hydroxyphenyl)benzothiazole by Hwang, Keum Saem, Park, Ka Young, Kim, Da Bin, Chang, Suk-Kyu

“…A novel Ag+-selective reaction-based probe based on an acetylthiourea derivative of 2-(2-hydroxyphenyl)benzothiazole dye was investigated. The designed probe…”
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Prediction of radical scavenging activities of anthocyanins applying adaptive neuro-fuzzy inference system (ANFIS) with quantum chemical descriptors by Jhin, Changho, Hwang, Keum Taek

“…Radical scavenging activity of anthocyanins is well known, but only a few studies have been conducted by quantum chemical approach. The adaptive neuro-fuzzy…”
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Band-Pass and Band-Stop Filter Frequency Selective Surface with Harmonic Suppression by Hwang, Dong, Jeong, Taeyong, Kim, Jun, Hwang, Keum

“…This study investigated a frequency-selective surface (FSS) that is used to suppress harmonics affecting the performance and accuracy of radar systems. One…”
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Fabrication of nanodiamonds modified with hyaluronic acid and chlorin e6 for selective photothermal and photodynamic tumor therapy by Yun, Tae Hoon, Ahn, Guk‐Young, Choi, Inseong, Bae, Yeon‐Ju, Hwang, Keum‐Cheol, Kang, Suk‐Hoon, Choi, Sung‐Wook

“…Nanodiamond (ND)‐based nanoparticles with hyaluronic acid (HA) and chlorin e6 (Ce6) were fabricated for potential photodynamic and photothermal tumor therapy…”
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Broadband Circularly Polarized Slot Antenna Loaded by a Multiple-Circular-Sector Patch by Trinh-Van, Son, Yang, Youngoo, Lee, Kang-Yoon, Hwang, Keum Cheol

“…In this paper, a microstrip-fed broadband circularly polarized (CP) slot antenna is presented. CP operation can be attained simply by embedding an S-shaped…”
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A Wideband Circularly Polarized Pixelated Dielectric Resonator Antenna by Trinh-Van, Son, Yang, Youngoo, Lee, Kang-Yoon, Hwang, Keum Cheol

“…The design of a wideband circularly polarized pixelated dielectric resonator antenna using a real-coded genetic algorithm (GA) is presented for far-field…”
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2.4 GHz GaN HEMT Class-F Synchronous Rectifier Using an Independent Second Harmonic Tuning Circuit by Na, Jongyun, Yi, Sang-Hwa, Shin, Jaekyung, Koo, Hyungmo, Bae, Jongseok, Hwang, Keum Cheol, Lee, Kang-Yoon, Yang, Youngoo

“…This paper proposes a class-F synchronous rectifier using an independent second harmonic tuning circuit for the power receiver of 2.4 GHz wireless power…”
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Effect of ellagic acid incorporation on the oxidative stability of sodium caseinate-polysaccharide-stabilized emulsions by Cho, Hyunnho, Yu, Ki Seon, Hwang, Keum Taek

“…Although ellagic acid (EA) has been known to have various functional activities including antioxidant and anticancer, application of EA is limited due to its…”
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A Configurable and Fully Synthesizable RTL-Based Convolutional Neural Network for Biosensor Applications by Kumar, Pervesh, Yingge, Huo, Ali, Imran, Pu, Young-Gun, Hwang, Keum-Cheol, Yang, Youngoo, Jung, Yeon-Jae, Huh, Hyung-Ki, Kim, Seok-Kee, Yoo, Joon-Mo, Lee, Kang-Yoon

“…This paper presents a register-transistor level (RTL) based convolutional neural network (CNN) for biosensor applications. Biosensor-based diseases detection…”
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Vertical-Strip-Fed Broadband Circularly Polarized Dielectric Resonator Antenna by Altaf, Amir, Jung, Jin-Woo, Yang, Youngoo, Lee, Kang-Yoon, Hwang, Keum Cheol

“…A vertical-strip-fed dielectric resonator antenna exhibiting broadband circular polarization characteristics is presented. A broad 3 dB axial ratio bandwidth…”
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A Design of Ambient RF Energy Harvester with Sensitivity of −21 dBm and Power Efficiency of a 39.3% Using Internal Threshold Voltage Compensation by Khan, Danial, Abbasizadeh, Hamed, Kim, Sang-Yun, Khan, Zaffar, Shah, Syed, Pu, Young, Hwang, Keum, Yang, Youngoo, Lee, Minjae, Lee, Kang-Yoon

“…In this paper, a low-power reconfigurable ambient Radio Frequency to Direct Current power (RF–DC) converter using an internal threshold voltage cancellation…”
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Dual-Band RF Wireless Power Transfer System with a Shared-Aperture Dual-Band Tx Array Antenna by Song, Chan-Mi, Lim, Hong-Jun, Trinh-Van, Son, Lee, Kang-Yoon, Yang, Youngoo, Hwang, Keum-Cheol

“…In this paper, a dual-band RF wireless power transfer (WPT) system with a shared-aperture dual-band Tx array antenna for 2.4 and 5.8 GHz is proposed. The final…”
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Phenolics in buckwheat hull extracts and their antioxidant activities on bulk oil and emulsions by Lee, Haeseong, Lim, Taehwan, Kim, Jaecheol, Kim, Ryun Hee, Hwang, Keum Taek

“…Buckwheat hulls are discarded as waste, although they have more phenolic compounds than buckwheat groats. The antioxidant activities of buckwheat hull extracts…”
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Shape and Weighting Optimization of a Subarray for an mm-Wave Phased Array Antenna by Jeong, Taeyong, Yun, Juho, Oh, Kyunghyun, Kim, Jihyung, Woo, Dae Woong, Hwang, Keum Cheol

“…This paper discusses how to optimize the weighting of individual subarrays to derive the low sidelobe level (SLL) based on quadratic programming (QP) and how…”
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A Wideband Circularly Polarized Antenna with a Multiple-Circular-Sector Dielectric Resonator by Trinh-Van, Son, Yang, Youngoo, Lee, Kang-Yoon, Hwang, Keum Cheol

“…This paper presents the design of a wideband circularly polarized antenna using a multiple-circular-sector dielectric resonator (DR). The DR is composed of…”
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A 3-D Meandered Probe-Fed Dual-Band Circularly Polarized Dielectric Resonator Antenna by Altaf, Amir, Jung, Jin-Woo, Yang, Youngoo, Lee, Kang-Yoon, Yi, Sang-Hwa, Hwang, Keum Cheol

“…A dual-band circularly polarized (CP) dielectric resonator antenna (DRA) designed on multi-layer substrates is proposed. An asymmetric C-shaped metallic strip…”
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Triple-Band Unidirectional Circularly Polarized Hexagonal Slot Antenna With Multiple L-Shaped Slits by Baek, Jong Gyun, Hwang, Keum Cheol

“…The design of a triple-band circularly polarized hexagonal slot antenna with L-shaped slits is presented in this study. By adding three L-shaped slit arms to…”
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