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Protestantism and Orthodoxy in Russia
Maxim 고신대학교 선교연구소 2009 고신선교 Vol.- No.5
is a part of the family of local churches that make the Universal Orthodox Church. The Russian Orthodox Church agrees upon the seven Church Councils and proclaims itself the Church of the Seven Church Councils and the Baptism of Russia. The Russian Orthodox Church was founded in 988 during the reign of Prince Vladimir 1 as the metropolitan of the Church of Constantinople with its centre inKiev. Vladimir forced all the Kiev citizens to be in the river Dnepr. Priests from Greece (the Byzantium) were invited urgently. Vladimir died in 1015. Later Orthodox theologians and historians began to call Rus “ the Holy Rus", but it was far from being holy. It remained mainly pagan, but covered by Christian forms.
Transfer Trajectory Analysis for a Korean Lunar Orbiter Mission
Maxime Monette,이지호,권세진 한국항공우주학회 2015 한국항공우주학회 학술발표회 논문집 Vol.2015 No.11
한국은 2020 년 한국형발사체를 이용한 달 탐사를 계획 중에 있으며, 이를 위해 궤적설계는 필수적으로 선행되어야 할 과제이다. 본 논문에서는 달 궤도에 진입하기 위한 세가지 궤적의 분석을 진행하였다. 직접전이방식에는 10ton 의 고 추력 고체로켓을, 페이징루프방식에는 5200N 의 과산화수소를 이용한 액체로켓을 사용하였으며, GMAT 을 이용하여 TLI, TCM, LOI 의 3-D 분석을 진행하였다. 분석결과, 직접전이방식이 페이징루프방식보다 탑재 중량 면에서 유리했지만 궤도의 안정성과 오차수정의 측면에서 페이징루프방식이 한국의 달 임무수행에 유리할 것으로 판단된다. 본 논문에서는 두 방식 외에, Weak Stability Boundary 방식을 제안한다. 이는 소요 시간은 길지만 연료소모를 줄여 탑재 중량을 늘릴 수 있다. This study examines the hydrogen peroxide/kerosene, high-performance green propellant thruster for the upper stage of the Korean Space Launch Vehicle (KSLV-II) to be launched in 2020 in a Lunar orbiter mission. The 2.5 phasing loop transfer trajectory using the liquid bipropellant engine is compared to a direct transfer trajectory with a solid motor, using readily available technology in Korea. 3-D space trajectories are obtained using GMAT to compare fuel consumption for maneuvers such as the Trans-Lunar Injection (TLI), Trajectory Correction Maneuvers (TCM) and Lunar Orbit Insertion (LOI). Furthermore, the Weak Stability Boundary transfer trajectory (WSB) is proposed as an alternative, with increased flight time, but with substantial reduction in the LOI cost to maximize the orbiter’s payload. This type of transfer could also be used for interplanetary missions such as Earth-Mars transfers with even greater fuel economy.
Palatnikov Mikhail N.,Shcherbina Olga B.,Masloboeva Sofja M.,Smirnov Maxim V.,Sidorova Olga V.,Kadetova Alexandra V.,Zelenina Elena V.,Efremov Vadim V.,Fedorinova Yulia P. 한국세라믹학회 2023 한국세라믹학회지 Vol.60 No.4
In the work, a fine powder of GdNb0.9Ta0.1O4-mixed gadolinium tantalum niobate activated with rare earth (REE) cations (Sm3+, Eu3+, Tb3+ and Er3+) was obtained by sol–gel synthesis. The evolution of the powder from amorphous to crystalline form was also studied in the work. The evolution was studied by synchronous thermal and X-ray analysis. The phase composition and structure of the resulting Gd0.96Eu0.01Sm0.01Tb0.01Er0.01Nb0.9Ta0.1O4 powders were analyzed in detail. Ceramic samples of the Gd0.96Eu0.01Sm0.01Tb0.01Er0.01Nb0.9Ta0.1O4 polycomponent solid solution were prepared from the sol–gel synthesized powder using traditional ceramic technology. The phase composition and characteristics of the structure of individual phases of the Gd0.96Eu0.01Sm0.01Tb0.01Er0.01Nb0.9Ta0.1O4 ceramic solid solution was determined by full-profile analysis of XRD patterns of polycrystals. We established that incorporation of REE (Tb, Er, Eu, Sm) into the gadolinium site in GdNb0.9Ta0.1O4 solid solution leads to various distortions of the corresponding polyhedra. Note that the distortion degree in this case is much greater than the distortion of the initial GdNbO4 structure. The photoluminescent (PL) properties of the Gd0.96Eu0.01Sm0.01Tb0.01Er0.01Nb0.9Ta0.1O4 solid solution were studied in the visible wavelength range. Analysis of literature and our own data revealed: electronic relaxation pathways in Gd0.96Eu0.01Sm0.01Tb0.01Er0.01Nb0.9Ta0.1O4 ceramics can be different depending on the energy of the exciting radiation. Excitation by the 376 nm line leads to internal energy conversion over 4fn–4fn levels of REE cations (Sm3+, Eu3+, Tb3+ and Er3+). The energy transfer between the Nb4+–O−–Ta4+–O− groups and REE is maximal in this case, while the radiation of the matrix from Nb4+–O−–Ta4+–O− emission centers is minimal. Upon excitation in the near-UV range (376 nm), Gd3+ cations do not participate in the energy transfer between the matrix and 4fn–4fn levels of REE dopants. The maximum PL of Gd0.96Eu0.01Sm0.01Tb0.01Er0.01Nb0.9Ta0.1O4 ceramics is observed in the green–red region of the spectrum from 5D0–7F2 and 4G5/2–6H7/2 transitions of Eu3+ and Sm3+. The emission is maximal at ~ 612 nm; it corresponds to the 5D0–7F2 electric dipole transition of the Eu3+ cation. We established that the efficiency of energy transfer between the matrix and doping REE cations for Gd0.96Eu0.01Sm0.01Tb0.01Er0.01Nb0.9Ta0.1O4 ceramics strongly depends on the energy of the exciting radiation.
Integrated Analysis, Design and Optimization Program Development for Advanced Air Mobility Aircraft
Maxim Tyan(장막심),JaeLyun Lee(이재륜),MinJi Kim(김민지),Woon Jae Won(원운재),Yeonju Choi(최연주),Zin Win Thu,Ki Joon Byeon(변기준),Seong Joong Park(박성중),Jae-Woo Lee(이재우) 한국항공우주학회 2022 한국항공우주학회 학술발표회 논문집 Vol.2022 No.11
Whole Genome Enabled Phylogenetic and Secretome Analyses of Two Venturia nashicola Isolates
Maxim Prokchorchik,Kyungho Won,Yoonyoung Lee,Cé,cile Segonzac,Kee Hoon Sohn 한국식물병리학회 2020 Plant Pathology Journal Vol.36 No.1
Venturia nashicola is a fungal pathogen causing scab disease in Asian pears. It is particularly important in the Northeast Asia region where Asian pears are intensively grown. Venturia nashicola causes disease in Asian pear but not in European pear. Due to the highly restricted host range of Venturia nashicola, it is hypothesized that the small secreted proteins deployed by the pathogen are responsible for the host determination. Here we report the whole genome based phylogenetic analysis and predicted secretomes for V. nashicola isolates. We believe that our data will provide a valuable information for further validation and functional characterization of host determinants in V. nashicola.