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Minimal circumscribed hermitian ellipsoid of hartogs domains and an application to an extremal problem

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Science China Mathematics 2009年第8期52卷 1699-1716页

作者： AhN heung-ju PARK jong-do Department of Mathematical Sciences Seoul National University School of Mathematics Korea Institute for Advanced Study Hoegiro 87 Dongdaemun-gu Seoul 130-722 Korea

In this paper we construct circumscribed hermitian ellipsoids of hartogs domains of least volume and as an application, we obtain the Carathéodory extremal mappings between the hartogs domains and the unit ball, and ... 详细信息

关键词： hartogs domain minimal circumscribed hermitian ellipsoid extremal problem 32h02 32F45

Peanut skin in diet alters average daily gain, ruminal and blood metabolites,and carcass traits associated with haemonchus contortus infection in meat goats~☆

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Animal Nutrition 2019年第3期5卷 278-285页

作者： Byeng R.Min Abrahamsen Frank Nar Gurung Jung h.Lee jong W.Joo Wilmer Pacheco Department of Agricultural and Environmental Sciences Tuskegee UniversityTuskegeeAL 36088USA Conservation and Production Laboratory United States Department of Agriculture/Agricultural Research Service(USDA/ARS)BushlandTX 79012USA Department of Agricultural Sciences Fort-Valley State UniversityFort-ValleyGA 31030USA Department of Companion Animal and Animal Resources Sciences Joongbu UniversityChung-Nam32713South Koreae Department of Animal Sciences Auburn UniversityAuburnAL 36849USA

The aim of this study was to determine the effects of tannin-rich peanut skin(PS)supplementation on growth performance,ruminal and blood metabolites,and carcass traits associated with internal parasite infection in meat goats under confined ***-one Kiko crossbred male goats were blocked by body weight(BW)and randomly assigned to one of 3 treatment *** diets contained different levels of peanut(Arachis hypogaea)skin replacing alfalfa(Medicago sativa)pellets(ALP)in a control *** treatments included:30% ALP(control),15% PS and 15% ALP,and 30% *** skin was incorporated in the grain mix portion of the *** were fed once daily,and the intake was adjusted every 3 to 4 *** animal was each artificially infected with 5,000 larvae of the 3 rd stage of barber’s pole worm(haemonchus contortus).Body weights,dry matter intake(DMI),and fecal samples for fecal egg counts(FEC)were taken at d 0,12,23,and *** fluid and blood samples were collected at d *** performance period lasted 45 d and at the completion of the study,goats were harvested,and carcass characteristics,abomasal worm counts were *** results showed that DMI,BW,carcass traits,and meat color were not affected by PS supplementation,whereas average daily gain(ADG,Phosphorus(Pholesterol levels(Ph increasing levels of PS *** was a linear(Ph increasing levels of PS *** study shows that PS supplementation up to 30% of the diet can improve ADG and rumen fermentation while reducing gastrointestinal parasite infection in meat goats.

关键词： Peanut skin Tannins Goats Carcass Parasites

Role of the tumor microenvironment in the pathogenesis of gastric carcinoma

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World Journal of Gastroenterology 2014年第7期20卷 1667-1680页

作者： hye Won Chung jong-Baeck Lim Department of Internal Medicine Institute of GastroenterologyYonsei University College of MedicineSeoul 135-720South Korea Department of Laboratory Medicine Yonsei University College of MedicineSeoul 135-720South Korea

Gastric carcinoma (GC) is the 4th most prevalent cancer and has the 2nd highest cancer-related mortality rate worldwide. Despite the incidence of GC has decreased over the past few decades, it is still a serious health problem. Chronic inflammatory status of the stomach, caused by the infection of helicobacter pylori (h. pylori) and through the production of inflammatory mediators within the parenchyma is suspected to play an important role in the initiation and progression of GC. In this review, the correlation between chronic inflammation and h. pylori infection as an important factor for the development of GC will be discussed. Major components, including tumor-associated macrophages, lymphocytes, cancer-associated fibroblasts, angiogenic factors, cytokines, and chemokines of GC microenvironment and their mechanism of action on signaling pathways will also be discussed. Increasing our understanding of how the components of the tumor microenviroment interact with GC cells and the signaling pathways involved could help identify new therapeutic and chemopreventive targets.

关键词： Tumor microenvironment Gastric carcinoma Inflammation helicobacter pylori Cytokine

Bidirectional quantum teleportation of unknown photons using path-polarization intra-particle hybrid entanglement and controlled-unitary gates via cross-Kerr nonlinearity

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Chinese Physics B 2015年第5期24卷 210-222页

作者： Jino heo Chang-ho hong jong-In Lim hyung-Jin Yang Graduate School of Information Security (GSIS) Korea University Center for Information Security Technologies (CIST) Korea University Department of Physics Korea University

We propose an arbitrary controlled-unitary （CU） gate and a bidirectional quantum teleportation （BQTP） scheme. The proposed CU gate utilizes photonic qubits （photons） with cross-Kerr nonlinearities （XKNLs）, X-homodyne detectors, and linear optical elements, and consists of the consecutive operation of a controlled-path （C-path） gate and a gathering-path （G- path） gate. It is almost deterministic and feasible with current technology when a strong coherent state and weak XKNLs are employed. Based on the CU gate, we present a BQTP scheme that simultaneously teleports two unknown photons between distant users by transmitting only one photon in a path-polarization intra-particle hybrid entangled state. Consequently, it is possible to experimentally implement BQTP with a certain success probability using the proposed CU gate.

关键词： cross-Kerr nonlinearity bidirectional quantum teleportation intra-particle hybrid entanglement

Is quantum capacitance in graphene a potential hurdle for device scaling？

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Nano Research 2014年第4期7卷 453-461页

作者： Jaeho Lee hyun-jong Chung David h. Seo Jaehong Lee hyungcheol Shin Sunae Seo Seongjun Park Sungwoo hwang Kinam Kim Samsung Advanced Institute of Technology Samsung Electronics Yongin-Si Gyeonggi-Do 446-712 Korea Inter-University Semiconductor Research Center (ISRC) School of Electrical Engineering and Computer Science Seoul National University Seoul 151-742 Korea Division of Quantum Phases and Devices Department of Physics Konkuk University Seou1143-701 Korea Semiconductor R&D Center Somsung Electronics Hwasung-City Gyeonggi-Do 446-711 Korea Department of Physics Sejong University Seou1143-74 7 Korea Memory Division Samsung Electronics Hwasung-City Gyeonggi-Do 446-711 Korea

Transistor size is constantly being reduced to improve performance as well as power consumption. For the channel length to be reduced, the corresponding gate dielectric thickness should also be reduced. Unfortunately, graphene devices are more complicated due to an extra capacitance called quantum capacitance （CQ） which limits the effective gate dielectric reduction. In this work, we analyzed the effect of CQ on device-scaling issues by extracting it from scaling of the channel length of devices. In contrast to previous reports for metal-insulator- metal structures, a practical device structure was used in conjunction with direct radio-frequency field-effect transistor measurements to describe the graphene channels. In order to precisely extract device parameters, we reassessed the equivalent circuit, and concluded that the on-state model should in fact be used. By careful consideration of the underlap region, our device modeling was shown to be in good agreement with the experimental data. CQ contributions to equivalent oxide thickness were analyzed in detail for varying impurity concentrations in graphene. Finally, we were able to demonstrate that despite contributions from CQ, graphene＇s high mobility and low-voltage operation allows for ~raphene channels suitable for next generation transistors.

关键词： graphene equivalent circuit quantum capacitance intrinsic delay

Kinetics study on photochemical oxidation of polyacrylamide by ozone combined with hydrogen peroxide and ultraviolet radiation

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Journal of Environmental Sciences 2006年第4期18卷 660-664页

作者： REN Guang-meng SUN De-zhi ChUNG jong Shik School of Municipal and Environmental Engineering Harbin Institute of Technology Harbin 150090 China Department of Chemical Engineering Pohang University of Science and Technology Pohang 790-784 South Korea

An investigation on the process of ozone combined with hydrogen peroxide and ultraviolet radiation has been carried out in order to establish the kinetics for photochemical oxidation of polyacrylamide （PAM） in aqueous solution. Effects of operating parameters, including initial PAM concentration, dosages of ozone and hydrogen peroxide, UV radiation and ph value on the photochemical oxidation of PAM, have been studied. There was an increase in photochemical oxidation rate of PAM with increasing of dosages of 03, h2O2 and ultraviolet radiation. Upon increasing of the initial PAM concentration, the photochemical oxidation rate of PAM decreased. Slight effect of ph value on the photochemical oxidation rate of PAM was observed in the experiments. The kinetics equation for the photochemical oxidation of PAM by the system has been established.

关键词： photochemical oxidation polyacrylamide kinetics ozone/hydrogen peroxide/ultraviolet radiation

Advanced treatment of oil recovery wastewater from polymer flooding by UV/h_2O_2/O_3 and fine filtration

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Journal of Environmental Sciences 2006年第1期18卷 29-32页

作者： REN Guang-meng SUN De-zhi jong Shik ChUNK School of Municipal and Environmental Engineering Harbin Institute of Technology Harbin 150090 China Department of Chemical Engineering Pohang University of Science and Technology Pohang 790-784 Korea

In order to purify oil recovery wastewater from polymer flooding （ORWPF） in tertiary oil recovery in oil fields, advanced treatment of UV/h2O2/O3 and fine filtration were investigated. The experimental results showed that polyacrylamide and oil remaining in ORWPF after the conventional treatment process could be effectively removed by UV/h2O2/O3 process. Fine filtration gave a high performance in eliminating suspended solids. The treated ORWPF can meet the quality requirement of the wastewater-bearing polymer injection in oilfield and be safely re-injected into oil reservoirs for oil recovery.

关键词： oil recovery wastewater from polymer flooding UV/h2O2/O3 process polyacrylamide

Structural,Sintering and Electrical Properties of Cr-doped La_(0.6)Sr_(0.4)Cr_xFe_(1-x)O_(3-δ)(x=0.10,0.20) Oxides

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Journal of Materials Science & Technology 2012年第7期28卷 654-660页

作者： LinlinZhu jong Pyo Kim Sou hwan Son Jung hoon Park State Key SLaboratory of Catalysis.Dalian Institute of Chemical Physics Chinese~Academy of Sciences Dalian 116023 China Greenhouse Gas Research Center Climate Change Technology Research Division Korea Institute of Energy ResearchDaejeon 305-343 Korea College of Chemistry and Materials Science Liaoning University of Petroleum and Chemical Technology Fushun113001 China

The perovskite Cr-doped La0.6Sr0.4CrxFe1-xO3-δ （x=0.10, 0.20） oxides were synthesized via the citrate gel method. The perovskite forming of the Lao.6Sr0.4CrxFel-xO3-δ （x=0.10, 0.20） oxides were studied by ther- mogravimetric analysis （TG）, differential scanning calorimetry （DSC）, and X-ray diffraction （XRD）. Structural and chemical stability under h2-containing helium atmospheres of Lao.6Sro.4CrxFel-xO3-δ （x=0.10, 0.20） were investigated by TG and XRD. The sintering microstructures of the perovskite Lao.6Sr0.4Cr2Fel-xO3-δ （x--0.10, 0.20） ceramics were investigated by scanning electron microscopy （SEM）, and the electrical conduc- tivities of both oxide ceramics were also measured up to 900℃. The results demonstrated that the chemical stability of the Co-free ***.4CrxFe1-xO3-δ （x=0.10, 0.20） oxides was significantly improved compared to the Co-containing Lao.6Sr0.4C00.2Fe0.8O3-δ and Ba0.5Sr0.5Co0.8Fe0.2O3-δ oxides. The incorporation of Cr cations in the B-site of the pervoskite oxides resulted in the improved structural and chemical stability of the as-synthesized Lao.6Sr0.4CrxFe1-xO3-δ （x=0.10, 0.20） oxides.

关键词： Perovskite Crystal structure Sintering Electrical conductivity

Extended Kalman Filter-based localization algorithm by edge computing in Wireless Sensor Networks

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Digital Communications and Networks 2021年第2期7卷 187-195页

作者： Inam Ullah Siyu Qian Zhixiang Deng jong-hyouk Lee College of Internet of Things(IoT)Engineering Hohai UniversityChangzhou Campus213022China Department of Computer and Information Security Sejong UniversitySeoul05006Republic of Korea

The Extended Kalman Filter(EKF)has received abundant attention with the growing demands for robotic *** EKF algorithm is more realistic in non-linear systems,which has an autonomous white noise in both the system and the estimation ***,in the field of engineering,most systems are ***,the EKF attracts more attention than the Kalman Filter(KF).In this paper,we propose an EKF-based localization algorithm by edge computing,and a mobile robot is used to update its location concerning the *** localization algorithm aims to achieve a high level of accuracy and wider *** proposed algorithm is helpful for the research related to the use of EKF localization *** results demonstrate that,under the situations presented in the paper,the proposed localization algorithm is more accurate compared with the current state-of-the-art localization algorithms.

关键词： Extended Kalman filter Edge computing Kalman filter Localization Robots State estimation