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Searching for a route to synthesize in situ epitaxial Pr_(2)Ir_(2)O_(7) thin films with thermodynamic methods

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npj Computational Materials 2021年第1期7卷 1320-1325页

作者： Lu Guo Shun-Li Shang Neil Campbell Paul G.Evans Mark Rzchowski Zi-Kui Liu chang-beom eom Department of Materials Science and Engineering University of Wisconsin-MadisonMadisonWisconsinUSA Department of Materials Science and Engineering The Pennsylvania State UniversityUniversity ParkPennsylvaniaUSA Department of Physics University of Wisconsin-MadisonMadisonWisconsinUSA

In situ growth of pyrochlore iridate thin films has been a long-standing challenge due to the low reactivity of Ir at low temperatures and the vaporization of volatile gas species such as IrO_(3)(g)and IrO_(2)(g)at high temperatures and high PO_(2).To address this challenge,we combine thermodynamic analysis of the Pr-Ir-O_(2)system with experimental results from the conventional physical vapor deposition(PVD)technique of *** results indicate that only high growth temperatures yield films with crystallinity sufficient for utilizing and tailoring the desired topological electronic properties and the in situ synthesis of Pr_(2)Ir_(2)O_(7)thin films is fettered by the inability to grow with PO_(2)on the order of 10 Torr at high temperatures,a limitation inherent to the PVD ***,we suggest techniques capable of supplying high partial pressure of key species during deposition,in particular chemical vapor deposition(CVD),as a route to synthesis of Pr_(2)Ir_(2)O_(7).

关键词： process thermodynamic synthesis

Photonic Crystal Fiber Attenuator

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光学学报 2003年第S1期23卷 -页

作者： Joo beom eom Hokyung Kim Jinchae Kim Un-Chul Paek Byeong Ha Lee Department of Information and Communications Kwangju Institute of Science and Technology 1 Oryong-dong

We propose a novel fiber attenuator based on photonic crystal fibers. The difference in the modal field diameters of a conventional single mode fiber and a photonic crystal fiber was used. A variable optical attenuato... 详细信息

关键词： photonic crystal fiber variable optical attenuator single mode fiber

Bandwidth Allocation Method by Service for WDM EPON

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光学学报 2003年第S1期23卷 775-776页

作者： Yongseok chang changgyu Choi Jonghoon eom Sungho Kim Dept. of Computer Engineering Kyungpook National University Daegu KoreaDept. of Computer Engineering Kyungpook National University Daegu KoreaTelecommunication Network Laboratory Korea Telecom Jeonmin-dong Yusung-gu Daejeon KoreaDept. of Computer Engineering Kyungpook National University Daegu Korea

A WDM(Wavelength Division Multiplexing) EPON(Ethernet Passive Optical Network) is an economical and efficient access network that has attracted significant research attention in recent years. A MAC(Media Access Control) Protocol of PON is based on TDMA(Time Division Multiple Access) basically, we can classify this protocol into a fixed length slot assignment method suitable for leased line supporting Qos(Quality of Service) and a variable length slot assignment method suitable for LAN/MAN with the best ...

关键词： WDM on Bandwidth Allocation Method by Service for WDM EPON ONU by for

Variable TDMA MAC Protocol For WDM EPON

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光学学报 2003年第S1期23卷 777-778页

作者： Minsuk Jung Yongseok chang Jonghoon eom Sungho Kim Dept. of Computer Engineering Kyungpook National University Daegu KoreaDept. of Computer Engineering Kyungpook National University Daegu KoreaTelecommunication Network Laboratory Korea Telecom Jeonmin-dong Yusung-gu Daejeon KoreaDept. of Computer Engineering Kyungpook National University Daegu Korea

A MAC(Media Access Control) protocol, one of the most important technologies for an EPON(Ethernet Passive Optical Network), contains a scheduling algorithm to avoid collisions in shared links and assigns an effective bandwidth when ONUs (Optical Network Units) transfer signals upward. The current paper proposes a MAC Protocol that operates a TDMA(Time method with a variable slot assignment to overcome short of bandwidth using by the number of n wavelength., the next generation access network. To verify ...

关键词： Variable TDMA MAC Protocol For WDM EPON for OPNET MAC TDMA

Heat Treatment of the Photonic Crystal Fiber

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光学学报 2003年第S1期23卷 80-81页

作者： Joo beom eom Seongwoo Yoo Jinchae Kim Hokyung Kim Un-Chul Paek Byeong Ha Lee Department of Information and Communications Kwangju Institute of Science and Technologyl Oryong-dong Buk-gu Gwangju 500-712 KoreaDepartment of Information and Communications Kwangju Institute of Science and Technologyl Oryong-dong Buk-gu Gwangju 500-712 KoreaDepartment of Information and Communications Kwangju Institute of Science and Technologyl Oryong-dong Buk-gu Gwangju 500-712 KoreaDepartment of Information and Communications Kwangju Institute of Science and Technologyl Oryong-dong Buk-gu Gwangju 500-712 KoreaDepartment of Information and Communications Kwangju Institute of Science and Technologyl Oryong-dong Buk-gu Gwangju 500-712 KoreaDepartment of Information and Communications Kwangju Institute of Science and Technologyl Oryong-dong Buk-gu Gwangju 500-712 Korea

We report heat treatment of the photonic crystal fiber. As the temperature was increased, the transmission of the photonic crystal fiber was increased, unlike conventional single mode fiber. The transmission increase at short wavelength region was larger than long wavelength region for the various temperatures. After crystallization of the silica glass, the spectra of the photonic crystal fiber were just decreased at all wavelength regions, but, in case of the single mode fiber, the absorption in visibl...

关键词： of on in be PCF mode Heat Treatment of the Photonic Crystal Fiber

Why are children less affected than adults by severe acute respiratory syndrome coronavirus 2 infection?

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Cellular & Molecular Immunology 2022年第5期19卷 555-557页

作者： chang Kyung Kang Hyun Mu Shin Wan beom Park Hang-Rae Kim Department of Internal Medicine Seoul National University College of MedicineSeoul03080Republic of Korea Department of Biomedical Sciences Seoul National University College of MedicineSeoul03080Republic of Korea BK21 FOUR Biomedical Science Project Seoul National University College of MedicineSeoul03080Republic of Korea Medical Research Institute Seoul National University College of MedicineSeoul03080Republic of Korea WideRiver Institute of Immunology Seoul National UniversityHongcheon25159Republic of Korea Department of Anatomy&Cell Biology Seoul National University College of MedicineSeoul03080Republic of Korea

An adequate immune response to severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)is crucial to not only clear the virus but also prevent tissue *** children generally experience a milder course of coronavirus... 详细信息

关键词： respiratory acute infection

Anatomy of the anterolateral ligament of the knee joint

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World Journal of Clinical Cases 2022年第21期10卷 7215-7223页

作者： Jun-Gu Park Seung-beom Han Hye chang Rhim Ok Hee Jeon Ki-Mo Jang Department of Orthopaedic Surgery Anam HospitalKorea University College of MedicineSeoul 02841South Korea rtment of Biomedical Sciences Korea University College of MedicineSeoul 02841South Korea

Despite remarkable improvements in clinical outcomes after anterior cruciate ligament reconstruction,the residual rotational instability of knee joints remains a major *** anterolateral ligament(ALL)has recently gained attention as a distinct ligamentous structure on the anterolateral aspect of the knee *** studies investigated the anatomy,function,and biomechanics of ALL to establish its potential role as a stabilizer for anterolateral rotational ***,controversies regarding its existence,prevalence,and femoral and tibial insertions need to be *** to a recent consensus,ALL exists as a distinct ligamentous structure on the anterolateral aspect of the knee joint,with some anatomic *** aim of this article was to review the updated anatomy of ALL and present the most accepted findings among the existing ***,ALL originates slightly proximal and posterior to the lateral epicondyle of the distal femur and has an anteroinferior course toward the tibial insertion between the tip of the fibular head and Gerdy’s tubercle below the lateral tibial plateau.

关键词： Knee joint Anatomy Anterolateral ligament Anterior cruciate ligament Anterolateral rotational instability Anterolateral ligament reconstruction

Porocarcinoma in a palm reconstructed with a full thickness skin graft: A case report

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World Journal of Clinical Cases 2024年第3期12卷 665-670页

作者： Seok beom Lim Kun Young Kwon Hoon Kim Soo Yeon Lim In chang Koh Department of Plastic and Reconstructive Surgery Konyang University Medical CenterKonyang University of College of MedicineDaejeon 35365South Korea Department of Pathology Konyang University Medical CenterKonyang University of College of MedicineDaejeon 35365South Korea

BACKGROUND Porocarcinoma is a rare type of skin cancer that originates from sweat gland *** is an aggressive malignant skin cancer that is difficult to diagnose clinically owing to its rarity and similarity to squamous cell carcinoma(SCC).CASE SUMMARY This case involved a 92-year-old woman,a farmer by profession,presented with an exophytic and verrucous mass on her left palm that had formed 2 years prior and caused chronic pain and frequent ***,the patient was diagnosed with SCC using a punch biopsy;however,a repeat biopsy with addi-tional immunohistochemical tests was performed for ***,the patient was diagnosed with porocarcinoma and reconstruction was planned using a full-thickness skin *** treatment,the range of motion of the palm was preserved,and the aesthetic outcome was *** 6 mo of follow-up,the patient was satisfied with the *** Porocarcinoma is commonly misdiagnosed as SCC;therefore,clinicians should consider porocarcinomas when evaluating mass-like lesions on the hands.

关键词： Eccrine porocarcinoma Hand defects Reconstructive surgery Sweat gland tumor Skin graft Case report

High Differential Group Index of Dispersion Compensating Fibers for OCDMA Encoder/Decoder

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光学学报 2003年第S1期23卷 221-222页

作者： Tae-Jung eom chang-Soo Park Un-Chul Paek Byeong Ha Lee Taesang Park Department of Information and Communications Kwangju Institute of Science and Technology1 Oryong-dong Buk-gu Gwangju KoreaDepartment of Information and Communications Kwangju Institute of Science and Technology1 Oryong-dong Buk-gu Gwangju KoreaDepartment of Information and Communications Kwangju Institute of Science and Technology1 Oryong-dong Buk-gu Gwangju KoreaDepartment of Information and Communications Kwangju Institute of Science and Technology1 Oryong-dong Buk-gu Gwangju KoreaKT corp. 463-1 Jeonmin-dong Yusung-gu Daejeon Korea

We report the LPG pair device that can be used as a pulse duplicator or an OCDMA encoder/decoder. Due to the ring core region of dispersion compensating fiber (DCF), we can shorten the device length by a third and obt... 详细信息

关键词： OCDMA be in on DCF High Differential Group Index of Dispersion Compensating Fibers for OCDMA Encoder/Decoder mode of for