Steel Bridge Construction of Hong Kong–Zhuhai–Macao Bridge

Wen-bo Gao,Quan-ke Su,Jin-wen Zhang,Hong-bing Xie,Feng Wen,Fang Li,Ji-zhu Liu 한국강구조학회 2020 International Journal of Steel Structures Vol.20 No.5

The 55-km-long Hong Kong–Zhuhai–Macao Bridge (HZMB) is the world’s longest sea-crossing bridge, connecting Hong Kong with Zhuhai and Macao at the mouth of the Pearl River Estuary in China, comprising 22.9-km-long steel bridges. HZMB is the leading steel bridge in China, with top-level manufacturing and installation technology. This paper outlines the steel bridge construction experiences of HZMB to provide comparisons for the construction of other long sea-crossing steel bridges at home or abroad. The main considerations of construction constraints, scheme selection, structural and aesthetic design of HZMB are presented, and the following points related to new strategies in the steel bridge construction of HZMB are elaborated: (1) construction quality assurance, (2) automatic manufacturing technology, (3) large segment off shore installation, (4) eco-friendly paint (content limitation of volatile organic compounds) and new multifunctional inspection gantry, and (5) Guss Mastic Asphalt steel deck pavement system. The successful implementation of those strategies shows that the steel bridge construction of HZMB promotes improvement in the overall construction and management level of the Chinese bridge industry. The advanced experience of HZMB has opened up broad prospects for the design and construction of off shore bridge engineering in China.

Urchin-like alkaline nickel–cobalt carbonate derived Ni3S4/Co3S4 nanoparticles anchored on rGO for lithium/sodium-ion batteries with enhanced capacity

Bo-Han Zhang,Yu-Qian Wang,Fen Gao,Hua-Ying Wang,Wan-Xin Wen,Yun-Lei Hou,Jing-Zhou Chen,Dong-Lin Zhao 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.128 No.-

Transition metal sulfides (TMS) have emerged as promising anode materials for lithium and sodium ionbatteries due to their high theoretical capacity and low cost. However, the severe volume expansion duringthe conversion reaction causes rapid collapse inevitability when used as anode material. Herein, wepertinently fabricated nanoscale Ni3S4/Co3S4 with uniform particle size homogeneously dispersedbetween pleated graphene (Ni3S4/Co3S4@rGO) through facile hydrothermal assisted by cationic surfactants. The construction of 3D nanocomposites significantly shortens ion migration distances and enricheselectronic pathways, accelerating charge transfer kinetics while maintaining good stability. Uniformlydistributed bimetallic sulfides and rGO limit each other’s aggregation, allowing the excellent structuralproperties of the material to be maintained over time. Thus, the Ni3S4-Co3S4@rGO electrodes deliver ahigh reversible capacity of 972.5 mAh/g upon 200 cycles at 100 mA g1 in Lithium-ion battery and487.5 mAh/g upon 150 cycles at 100 mA g1 in Sodium-ion battery, as well as excellent rate capacityin both. These excellent properties show the potential for expansion of this simple synthetic methodin the field of alkali metal batteries.

Effect of structural phase transformations under pressure on electronic and optical properties of CuInS2

Bo Gao,Hong-Tao Xue,Fu-Ling Tang,Yu-Wen Cheng 한국물리학회 2017 Current Applied Physics Vol.17 No.11

First-principles plane-wave calculations were employed to study the phase transitions, electronic and optical properties of chalcopyrite CuInS2 (CIS) under pressure, which is a promising semiconductor compound material for nonlinear optical, photovoltaic and bio-applications. From the variations of Gibbs free energy and volume with pressure, we confirmed an experimentally found phase transformation of CIS from tetragonal I42d structure into the cubic Fm3m phase. It occurs at 7.9 GPa with a volume reduction of 15.6%, which are comparable with the experimental values of 9.5 GPa and 12%. A new possible phase transition of CIS from the cubic Fm3m structure to the orthorhombic Cmcm structure under higher pressure was predicted occurring at 49.6 GPa with a volume reduction about 0.64%. Using the more accurate HSE06 functional, we found that the growth rate of energy gap with pressure (dEg/dP) for the I42d phase is about 24.8 meV/GPa, very close to the experimental value of 24 meV/GPa. The calculated electronic properties for Fm3m and Cmcm phases show that CIS is a metallic material under high pressure, rather than a semiconductor. The optical absorption spectra indicate that with the increase of pressure the absorption edge of CIS becomes smaller while the optical energy gap is larger.

중국 주거문화와 가정교육을 융합한 주거 공간에서의 교육행위 특성 연구

고성림(Gao Cheng Lin),노박문(Lu Bo Wen),정미선(Chung Mi Sun) 한국전시산업융합연구원 2019 한국과학예술융합학회 Vol.37 No.3

본 논문은 중국 주거문화의 교육 속성을 기초 연구대상으로 하여, 주거 공간에서의 “상(象)”(무형)과 문화적 사상, 심미(审美), 상징과 “형(形)”(유형)문의 공간을 표현, 장식적 상징성을 융합 및 연구하였다. 각 요소가 반영된 주거공간의 특성과 가정교육의 연관성을 기준으로 분석하였다. 또한 중국의 전통 주거공간(명청시대를 대표하는 삼진사합원(三进四合院)) 과 현대 주거공간(20세기 말의 공동주택)에서의 교육행위 특성을 비교하고, 주거공간 설계에서의 교육의 중요성을 강조하여 “덕육(德育)”교육과 학습 성장의 연관성, 교육의 역할, 교육 공간, 정경체험(情景体验) 특성의 차이성 등을 도출해내어 미래 주거 공간에서 가정교육 공간의 디자인 방향의 근거를 제시하고 있다는 점에서 의의가 있다. 연구과정과 내용은 다음과 같다. 첫 번째, 중국 주거문화와 가정교육의 융합성을 바탕으로 주거공간의 “상(象)”(무형)문화와 “형(形)” 문화 두 가지 측면에서 출발하여, 사상, 심미, 상징, 공간표현, 장식의 5가지 측면에서 문화적 배경에 기초한 주택공간과 교육특성의 상관성을 연구 분석한다. 둘째, 전통주거공간과 현재주거공간의 교육적 속성에 기초하여 "상(象)"문화에서는 조상 숭배, 존비유서(尊卑有序), 장유유서, 남녀유별, 좌북남조(坐坎朝离), 사법자연(师法自然:자연에서 배우다), 경중구분, 도덕품격 등의 8개 요소, 그리고 "형(形)"문화에서는 향심성(向心性), 방향성, 주거공간의 내외부, 실내공간의 방과 방, 문양 등의 5개요소를 기준으로 하여 분석하였다. 셋째, 위에서의 과정을 통해 전통과 현대 주거 공간에서의 교육적 특성을 구체적으로 비교 분석하고, 전통 주택 공간에서 가풍가규(家风家规), 학규(学规)성장, 품행 가치와 현대주택 공간에서의 가족 문화, 학습 성장, 사회적 가치 등의 6가지 측면의 통일성과 차이점을 도출한다. 네 번째, 전통과 현대 주거 공간의 6대 교육특성을 기준으로 주거공간에서의 “덕육(德育)”과 학습 성장 두 가지 측면을 비교하여 가정교육을 도출하고, 현대 주거공간 디자인에 접목 시킬 수 있는 새로운 니즈를 도출한다. 본 연구를 통해 얻은 결과는 가정교육 행위가 미래주거 공간의 디자인 및 발전에 영향을 끼친다는 것이다. 또한, 전통과 현대의 가정교육과 주거 공간의 연관성을 비교하여 주거문화와 가정교육을 융합한 주거공간에서의 교육행위 특성을 도출 및 아래 몇 가지 측면으로 정리할 수 있다. 공통점은 (1) 주거 공간 중 가정에서 “덕육(德育)”은 가정교육의 핵심이다. (2) 학습 성장은 가정교육의 주체이다. 위 두 가지로 정리 할 수 있고, 차이점은 전통 주거 공간에서의 교육 행위는 가정의 교육과 교육의 계승에 중점을 두는 반면, 현대 주거 공간에서의 교육 행위는 우수한 전통적 교육 문화 계승을 제외한다는 것에 있다. (1) 교육 역할의 갱신에 더 중점을 두고 있으며, 전통 방식의 수동적 교육행위에서 주동적 “활(活)교육”행위로 전환 되었다. (2) 탄력적인 교육공간의 확대. 주거 공간 내부의 사용은 평등하며, 명확한 공간의 경계가 없다. 또한 공공 공간이 확대되어, 자녀와 함께하며 자녀의 학습습관을 기르는 을 중시한다. (3) 정경체험(情景体验) 기능과의 융합. 현대 주거 공간은 디지털 기술 매체의 발전으로, 상황 시뮬레이션과 예술 체험 등의 보조 교육을 통해 아이들의 봉사 의식과 창의력을 키운다. 이 내용은 향후 미래 주거 공간에서의 가정교육 공간 디자인 갱신을 위한 기초와 근거로 제시될 수 있다. In this thesis, the author takes the educational attribute of Chinese residential culture as the basic research object and integrates the ideology, aesthetic appreciation and symbolization of residence space’s “XIANG” (Intangible Factor) culture and the space expression and decoration factors of “XING” (Tangible Factor) to reflect the relevance between residence space’s characters and family education, which are taken as the analysis standard. Moreover, the author makes a comparative analysis on educational behavior characteristic of Chinese traditional spacing residence space (represented by three-tier courtyard house in the period of Ming and Qing Dynasty) and modern residence space(suite residence in the late 20C). The author also emphasizes education’s importance in residence space design and highlights the correlation between “moral” education and learning growth, the differences of educational roles, educational spaces and scene experience characteristics, thus providing a basis for the design of family education space in the future residence. Firstly, from the perspective of integration between Chinese residential culture and family education, the author starts to make analysis from residence space’s “XIANG” (Intangible Factor) culture and “XING” (Tangible Factor) culture so as to discuss and analyze the correlation between residence space and educational characteristics on the cultural background from the five aspects: ideology, aesthetic appreciation, symbolization and space expression. Secondly, based on educational attribute of traditional residence space and modern residence space, the author makes an analysis on the standard of “XIANG” culture’s ancestral worship, respect for hierarchy and order, differences between man and woman, face south, learning from nature, clear distinction between the primary and the secondary as well as “XING” culture’s five factors: centrality, directionality, inside and outside of residence space, rooms of residence interior space and pattern design. Thirdly, through the process mentioned above, the author specifically makes a comparative analysis on the educational characteristics of traditional and modern residence space, thus leading out the uniformity and differences between traditional residence space’s family traditions and rules, learning rules for growth, moral value and modern residence space’s family culture, learning growth and social value. Fourthly, on the basis of six major educational characteristics of traditional and modern residence, the author makes a comparison, thus getting family education’s importance in residence space’s “moral education” and learning growth. Moreover, new requirements for modern residence space design are proposed. From this research, the author gets a consequence that family’s educational behaviors have an influence on the design and development of future residence space. In contrast with traditional and modern family education’s relevance with residence space, the author gets that the educational behavior characteristics of residence space with the integration of residential culture and family education are mainly presented as the following aspects: the similarities are: (1) Family’s “moral education” in residence space is the core of family education. (2) Learning growth is the main part of family education; The different points are: Traditional residence space’s educational behaviors place emphasis on the inheritance of education for home teaching rules; while in modern residence space’s educational behaviors, besides inheriting traditional educational culture, (1) The update of educational role is paid more attention. The educational behavior of traditional passive teaching is changed into positive “living education” behavior. (2) The flexible educational space is enlarged. Residence space’s internal use is equal without specific space limit; public space is expanded and the interactive behaviors and learning habit of parent-offs

Transgenic NfFeSOD Sedum alfredii plants exhibited profound growth impairments and better relative tolerance to long-term abiotic stresses

Xiang Gao,Wen-Li Ai,Huan Gong,Li-Juan Cui,Bo-Xia Chen,Hong-Yi Luo,Zhong-Chun Zhang,Bao-Sheng Qiu 한국식물생명공학회 2016 Plant biotechnology reports Vol.10 No.2

Transgenic research was preformed by transferring a cyanobacterial (Nostoc flagelliforme) iron superoxide dismutase gene (NfFeSOD) into heavy metal hyperaccumulator Sedum alfredii via Agrobacterium-mediated method. Beyond expectation, NfFeSOD-overexpressing S. alfredii plants exhibited profound impairments, including plant growth retardation, abnormal root architecture, and reduced leaf greenness, photosynthetic efficiency and metal accumulation efficiency. Although transgenic plants appeared physiologically sensitive to high temperature, a higher relative biomass growth was still observed under long-term high temperature and osmotic stresses. Further investigation found that reactive oxygen species (ROS) homeostasis of transgenic plants was significantly affected, being ~50 % reduction of H2O2 level relative to wild-type plants. Gene transcription including ROS responsive genes was overall attenuated in transgenic plants, being more significant at normal temperature than at high temperature. In addition, ascorbate peroxidase (APX) activity was increased nearly twofolds in transgenic plants as compared to wild-type control. It may be inferred that ectopic NfFeSOD overexpression gives rise to a substantial increase of APX activity and leads to a sharp reduction of H2O2 level, thus impairing basal ROS signaling and plant growth. Specific genetic background of S. alfredii may be responsible for this sharp reduction of H2O2 level induced by NfFeSOD overexpression. S. alfredii plant has acclimated to elevated levels of ROS induced by heavy metals in native habitats and should require high ROS levels for basal signaling. We thus suppose that a sustained disturbance of high basal ROS signaling in metal hyperaccumulators may instead incur very sensitive response and thus result in profound growth impairments.

Up-Regulation of MiR-1915 Inhibits Proliferation, Invasion, and Migration of Helicobacter pylori-Infected Gastric Cancer Cells via Targeting RAGE

Xin-cai Xu,Wen-bin Zhang,Chun-xing Li,Hua Gao,Qi Pei,Bo-wei Cao,Tie-han He 연세대학교의과대학 2019 Yonsei medical journal Vol.60 No.1

Purpose: Helicobacter pylori (HP)-infected gastric cancer (GC) is known to be a fatal malignant tumor, but the molecular mechanismsunderlying its proliferation, invasion, and migration remain far from being completely understood. Our aim in this studywas to explore miR-1915 expression and its molecular mechanisms in regulating proliferation, invasion, and migration of HP-infectedGC cells. Materials and Methods: Quantitative real-time PCR and western blot analysis were performed to determine miR-1915 and receptorfor advanced glycation end product (RAGE) expression in HP-infected GC tissues and gastritis tissues, as well as humangastric mucosal cell line GES-1 and human GC cell lines SGC-7901 and MKN45. CCK8 assay and transwell assay were performedto detect the proliferation, invasion, and migration capabilities. MiR-1915 mimics and miR-1915 inhibitor were transfected intoGC cells to determine the target relationship between miR-1915 and RAGE. Results: MiR-1915 was under-expressed, while RAGE was over-expressed in HP-infected GC tissues and GC cells. Over-expressedmiR-1915 could attenuate cellular proliferation, invasion, and migration capacities. RAGE was confirmed to be the target gene ofmiR-1915 by bioinformatics analysis and luciferase reporter assay. Moreover, HP-infected GC cellular proliferation, invasion, andmigration were inhibited after treatment with pcDNA-RAGE. Conclusion: MiR-1915 exerted tumor-suppressive effects on cellular proliferation, invasion, and migration of HP-infected GCcells via targeting RAGE, which provided an innovative target candidate for treatment of HP-infected GC.

충적과정중 미국인삼 종자의 생리 및 생화학적 지표에 관한 동태학적 연구 ( Ⅱ ) ( Dynamic Studies on Physiology and Biochemistry in American Ginseng Seed During Stratification - Part Ⅱ. Contents of Soluble Carbohydrate , Crude Fat , Fatty Acid and Soluble Protein - )

Yao Ge Huang,Xiang Gao Li,Shu Yu Cui,Wen Bo Yu,Ya Lan Kuang,Jie Kun Yan,Ji Xiang Yang,Ren Song Liu,김학성 고려인삼학회 1997 Journal of Ginseng Research Vol.21 No.1

Preparation and Characterization of Paclitaxel-Loaded PLGA Nanoparticles Coated with Cationic SM5-1 Single-chain Antibody

( Geng Kou ),( Jie Gao ),( Hao Wang ),( Huai Wen Chen ),( Bo Hua Li ),( Da Peng Zhang ),( Shu Hui Wang ),( Sheng Hou ),( Wei Zhu Qian ),( Jian Xin Dai ),( Yan Qiang Zhong ),( Ya Jun Guo ) 생화학분자생물학회 2007 BMB Reports Vol.40 No.5

충적과정중 미국인삼 종자의 생리 및 생화하적 지표에 관한 동태학적 연구 III

Huang, Yao-Ge,Li, Xiang-Gao,Kuang, Ya-Lan,Yan, Jie-Kun,Cui, Shu-Yu,Yu, Wen-Bo,Yang, Ji-Xiang,Liu, Ren-Song,Kim, Hack-Seang 고려인삼학회 1997 Journal of Ginseng Research Vol.21 No.1

Dynamic parameters of biochemistry including the POD (peroxidase) activity, contents of DNA and RNA, isozymes of POD and ES (esterase) in American send (Panax quinquefolium L.) seed are reported in the present paper. The dynamic changes of POD activity proved that the PAS (physiological afterripening stage) is a stage in which some substances are prepared for seed germination. The POD activity correlated with ER (embryo ratio) significantly DNA content changed little only within 0.0036∼0.013 mg/ml, which did not correlate with ER. RNA content changed from 0.1539 to 1.0313 mg/ml and correlated significantly with RE during all of the embryo afterripening. None of the POD isozyme band was obtained in ESGS (embryo slowly growth stage), but five bands in ERGS (embryo rapidly growth stage) and six bands in PAS. Four bands of ES isozymes were obtained in ESGS, but six bands in ERGS, particularly, the content of ES isozymes increased in PAS. All of these may provide some information for understanding the dormancy mechanisms of American song seed.

충적과정중 미국인삼 종자의 생리 및 생화학적 지표에 관한 동태학적 연구 I

Huang, Yao-Ge,Li, Xiang-Gao,Cui, Shu-Yu,Yu, Wen-Bo,Kuang, Ya-Lan,Yan, Jie-kun,Yang, Ji-Xiang,Liu, Ren-Song,Kim, Hack-Seang The Korean Society of Ginseng 1997 Journal of Ginseng Research Vol.21 No.1

Dynamic parameters of biochemistry including the contents of soluble carbohydrate (SC) , crude fat (CF) , fatty arid (FA) and soluble protein (SP) in American send (Panax qufnquelolium L.) seed are reported in the present paper. When embryo ratio (ER) increased from 7.31 to 20.48%, the SC content decreased from 4.08 to 1.16%. After that, SC content changed little. The CF content decreased successively from 34.50 to 14.40% from the beginning to the end during the embryo afterripening. The changes of FA content did not correlate with that of ER and the changing range of SP content was not large during the seed stratification. All of these may provide some information for understanding the dormancy mechanisms of American seng seed.