Syntheses, Structures, and Characterization of Quaternary Tellurites, Li₃MTe₄O₁₁ (M = Al, Ga, and Fe)

Lü,, Minfeng,Jo, Hongil,Oh, Seung-Jin,Lee, Suheon,Choi, Kwang-Yong,Yu, Yang,Ok, Kang Min ACS AMERICAN CHEMICAL SOCIETY 2017 Inorganic Chemistry Vol. No.

<P>Three new quaternary lithium metal tellurites, Li3MTe4O11 (M = Al, Ga, and Fe), have been synthesized through hydrothermal and solid-state reactions by heating a mixture of LiOH center dot H2O, TeO2, and M2O3. The structures of the title compounds have been determined by single-crystal and powder X-ray diffraction. Li3MTe4O11 reveal three-dimensional (3D) frameworks that consist of MO6 octahedra, TeO3 trigonal pyramids, and TeO4 polyhedra. The variable coordination mode of Te4+ within the framework leads to the formation of 1D channels that host Li+ cations on both tetrahedral and octahedral sites. The bulk and grain boundary Li+ ion conductivities for a Li3FeTe4O11 pellet in open air are estimated to be 1.0 x 10(-4) and 2.7 x 10(-6) S cm(-1), respectively, at room temperature from the impedance profile analysis. A lower activation energy of 19.9 kJ mol(-1) is obtained for the system, which is similar to that of Li10GeP2S12 (24 kJ mol(-1)). Detailed characterizations such as thermal, spectroscopic, and magnetic properties for the reported materials are also reported.</P>

정신분열병 환각의 횡문화적 연구 : 상해와 서울의 비교 A Transcultural Study

金光日,長良棟,陸明康,朴康奎,朴容千,金大虎 大韓神經精神醫學會 2001 신경정신의학 Vol.40 No.5

연구목적 : 정신분열병의 환각이 문화사회의 특성에 따라 어떤 차이가 나는지를 확인하고 그 의미를 문화정신의 학적 견지에서 고찰해보고자 이 연구를 시행하였다. 방 법 : Shanghai와 서울의 정신분열병 환자를 대상으로 환각의 형태, 내용, 주제 등에 관한 비교문화적인 조사연구를 하였다. Shanghai Mental Health Center, 국립서울정신병원, 한양대학교병원에 입원하고 있는 환자중 DSM-Ⅳ 진단기준으로 정신분열병의 진단이 확정된 환자 가운데 입원한지 1개월에서 6개월 이내인 환자를 대상으로 사전에 성별, 연령, 교육연한, 발병기간 임상아형, 등 5개 변인을 통제하여 조사대상을 선정하였다. 조사대상이 된 환자는 396명(Shanghai 182명, 서울 214명)이었다. 이중 환각이 확인된 환자 231명(Shanghai101명, 서울 130명)을 최종 연구대상으로 하였다. 결 과 : 환각의 형태에서는 양 집단 차이가 없었으나 환각의 내용이 양 집단에서 차이를 보였다. 즉 Shanghai에서는 정치적인 내용이, 서울에서는 초자연적/종교적 내용이 많았다. 결 론 : 환각의 주제나 내용은 망상과 긴밀하게 연관이 되어 있다는 점, 그리고 사회문화적 상황의 영향을 다분히 받고 있음을 알 수 있었다. Objective : The types, contents and major themes of schizophrenic hallucinations in Shanghai and Seoul were compared for evaluating cultural differences and connotation. Methods : Among the schizophrenic inpatients of Shanghai Mental Health Center in Shanghai and National Seoul Mental Hospital and Hanyang University Hospital in Seoul, 396 cases(182 cases in Shanghai, 214 cases in Seoul) were selected by two ways: a) five staged stratified random sampling of sex, age, education, clinical subtype and onset year, b) cases who have admitted for one to six months in their last admission. Among them, 231 cases(55.39% in Shanghai, 60.83% in Seoul) confirmed to have hallucinations were the final subjects of study. Results : Frequencies in types of hallucination were not different between the two groups. However, contents and major themes were different: Political themes and related contents were dominant in Shanghai cases, and supernatural and religious themes and related contents were dominant in Seoul cases. Conclusion : It was concluded that contents and themes of hallucinations were closely related to the delusional contents and themes, and such patterns were considerably influenced by so-ciocultural characteristics.

A GBS-Based Genetic Linkage Map and quantitative trait loci (QTL) Associated with resistance to Xanthomonas campestris pv. campestris race 1 identified in Brassica o!eracea

Lu Lu,Su Ryun Choi,Yong Pyo Lim,Si-Yong Kang,So Young Yi 한국육종학회 2023 한국육종학회 공동학술발표집 Vol.2023 No.-

[PF-0010] Early Defense Mechanisms of Brassica oleracea in Response to Attack by Xanthomonas campestris pv. campestris

Lu Lu,Sokrat G. Monakhos,Yong Pyo Lim,Si-Yong Kang,So Young Yi 한국육종학회 2022 한국육종학회 공동학술발표집 Vol.2022 No.-

Mesoscale modelling of concrete for static and dynamic response analysis Part 2: numerical investigations

Yong Lu,Zhenguo Tu 국제구조공학회 2011 Structural Engineering and Mechanics, An Int'l Jou Vol.37 No.2

As a brittle and heterogeneous material, concrete behaves differently under different stress conditions and its bulk strength is loading rate dependent. To a large extent, the varying behavioural properties of concrete can be explained by the mechanical failure processes at a mesoscopic level. The development of a computational mesoscale model in a general finite element environment, as presented in the preceding companion paper (Part 1), makes it possible to investigate into the underlying mechanisms governing the bulk-scale behaviour of concrete under a variety of loading conditions and to characterise the variation in quantitative terms. In this paper, we first present a series of parametric studies on the behaviour of concrete material under quasi-static compression and tension conditions. The loading-face friction effect, the possible influences of the non-homogeneity within the mortar and ITZ phases, and the effect of randomness of coarse aggregates are examined. The mesoscale model is then applied to analyze the dynamic behaviour of concrete under high rate loading conditions. The potential contribution of the mesoscopic heterogeneity towards the generally recognized rate enhancement of the material compressive strength is discussed.

Mesoscale modelling of concrete for static and dynamic response analysis -Part 2: numerical investigations

Lu, Yong,Tu, Zhenguo Techno-Press 2011 Structural Engineering and Mechanics, An Int'l Jou Vol.37 No.2

As a brittle and heterogeneous material, concrete behaves differently under different stress conditions and its bulk strength is loading rate dependent. To a large extent, the varying behavioural properties of concrete can be explained by the mechanical failure processes at a mesoscopic level. The development of a computational mesoscale model in a general finite element environment, as presented in the preceding companion paper (Part 1), makes it possible to investigate into the underlying mechanisms governing the bulk-scale behaviour of concrete under a variety of loading conditions and to characterise the variation in quantitative terms. In this paper, we first present a series of parametric studies on the behaviour of concrete material under quasi-static compression and tension conditions. The loading-face friction effect, the possible influences of the non-homogeneity within the mortar and ITZ phases, and the effect of randomness of coarse aggregates are examined. The mesoscale model is then applied to analyze the dynamic behaviour of concrete under high rate loading conditions. The potential contribution of the mesoscopic heterogeneity towards the generally recognized rate enhancement of the material compressive strength is discussed.

Modelling of concrete structures subjected to shock and blast loading: An overview and some recent studies

Yong Lu 국제구조공학회 2009 Structural Engineering and Mechanics, An Int'l Jou Vol.32 No.2

The response of concrete structures subjected to shock and blast load involves a rapid transient phase, during which material breach may take place. Such an effect could play a crucial role in determining the residual state of the structure and the possible dispersion of the fragments. Modelling of the transient phase response poses various challenges due to the complexities arising from the dynamic behaviour of the materials and the numerical difficulties associated with the evolving material discontinuity and large deformations. Typical modelling approaches include the traditional finite element method in conjunction with an element removal scheme, various meshfree methods such as the SPH, and the mesoscale model. This paper is intended to provide an overview of several alternative approaches and discuss their respective applicability. Representative concrete material models for high pressure and high rate applications are also commented. Several recent application studies are introduced to illustrate the pros and cons of different modelling options.

ELSEVIER : C-Src-mediated phosphorylation of δ-catenin increases its protein stability and the ability of inducing nuclear distribution of β-catenin

( Yong Feng He ),( Hang Gun Kim ),( Tae Yong Ryu ),( Kwang Youl Lee ),( Won Seok Choi ),( Kyeong Man Kim ),( Mei Zheng ),( Yechan Joh ),( Jae Hyuk Lee ),( Dong Deuk Kwon ),( Qun Lu ),( Kwonseop Kim ) 전남대학교 약품개발연구소 2014 약품개발연구지 Vol.23 No.-

&-catenin was first considered as a brain spedfic protein, strong evidence of&-catenin overexpression in various cancers, including prostate cancer, has been accumulated. Phosphorylation of a-catenin by Akt and GSK313 has been studied in various cell lines. However, tyrosine phosphorylation of &-catenin in prostate cancer cells remains unknown. In the current study, we demonstrated that Src kinase itself phosphorylates &-catenin on its tyrosine residues in prostate cancer cells and further illustrated that Yl073, Yll12 and Yl176 of &-catenin are predominant sites responsible for tyrosine phosphorylation mediated by c-Src. Apart from c-Src, other Src family kinases, including Fgr, Fyn and Lyn, can also phosphorylate a-catenin. We also found that c-Src-mediated Tyr-phosphorylation of &-catenin increases its stability via decreasing its affinity to GSK313 and enhances its ability of indudng nuclear distribution of j3-catenin through interrupting the integrity of the E-cadherin. Taken together, these results indicate that c-Src can enhance the oncogenic function of&-catenin in prostate cancer cells. ⓒ 2013 Elsevier B.V. All rights reserved.

Numerical simulation of concrete confined by transverse reinforcement

Yong Lu,Zhenhuan Song 사단법인 한국계산역학회 2011 Computers and Concrete, An International Journal Vol.8 No.1

The behaviour of concrete confined by transverse reinforcement is a classical topic. Numerous studies have been conducted to establish the stress-strain relationships for concrete under various confining reinforcement arrangements. Many empirical and semi-empirical formulas exist. Simplified analytical models have also been proposed to evaluate the increase in the strength and ductility of confined concrete. However, relatively few studies have been conducted to utilise advanced computational models for a realistic simulation of the behaviour of concrete confined by transverse reinforcement. As a matter of fact, high fidelity simulations using the latest numerical solvers in conjunction with advanced material constitutive models can be a powerful means to investigating the mechanisms underlying the confining effects of different reinforcement schemes. This paper presents a study on the use of high fidelity finite element models for the investigation of the behaviour of concrete confined by stirrups, as well as the interpretation of the numerical results. The development of the models is described in detail, and the essential modelling considerations are discussed. The models are then validated by simulating representative experimental studies on short columns with different confining reinforcement schemes. The development and distribution of the confining stress and the subsequent increase in the axial strength are examined. The models are shown to be capable of reproducing the behaviour of the confined concrete realistically, paving a way for systematic parametric studies and investigation into complicated confinement, load combination, and dynamic loading situations.

A Research of Engineering Construction Based on Credit Risk

Lu Shi-bao,Huang Qiang,ZHANG Yong-yong,SUN Dong-yong 인하대학교 정석물류통상연구원 2009 인하대학교 정석물류통상연구원 학술대회 Vol.2009 No.10

Engineering construction companies often default on the contract expird, which makes the enterprise"s own quality and credibility be affected. Therefore, the construction enterprises should be aware that the value of their own credit, financial sector should also be on the borrowers to assess credit risk, so as not to appear in the portfolio risk. This article utilizes the modern credit grading method toevaluate the construction enterprise"s Credit rating. The study found: Change index credit transpose matrix has a great impact. It will affect the credit rating chages. Credit Change this index ranged from zero when the critical state has a different default status, when the credit quality index greater than zero, the rise in the value of its credit; if the credit quality index is less than zero, the credit quality of the index on the lower Level; If zero, credit rating is tomaintain the normal status, and obtained the illustration through the example.