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Jin Guo Fan,김미진,Quynh Pham Bao Nguyen,Ramanaskanda Braveenth,고혜민,한지훈,김경우,권장혁,채규윤 대한화학회 2016 Bulletin of the Korean Chemical Society Vol.37 No.10
A series of carbazole core-based hole-transporting materials (HTMs) have been synthesized using Buchwald–Hartwig amination reaction. HTMs 7a and 7b exhibited high thermal decomposition temperatures of 400 and 380°C, respectively, without any crystalline features. Among the designed HTMs 7a–c, the device performance based on HTM 7a is the best and identical with that of the typical hole-transporting N,N′-di(1-naphthyl)-N,N′-diphenyl-(1,1′-biphenyl)-4,4′-diamine (NPB) material.
Jin, Guo Fan,Hwang, Jo-Hyun,Lee, Jong-Dae,Wee, Kyung-Ryang,Suh, Il-Hwan,Kang, Sang Ook The Royal Society of Chemistry 2013 Chemical communications Vol.49 No.82
<P>Electron accepting capability is greatly improved for B-phenylated tri-phenyl-<I>o</I>-carborane (<B>1</B>) through a favorable electronic interaction between the two adjoining phenyl-π* and cage carbon-σ* orbitals.</P> <P>Graphic Abstract</P><P>The electronic state of 1,2-diphenyl-<I>o</I>-carborane is altered by B-phenylation through a favorable electronic interaction between the two adjoining phenyl and cage carbon orbitals. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c3cc45313h'> </P>
Review of the Molecular Pathogenesis of Osteosarcoma
He, Jin-Peng,Hao, Yun,Wang, Xiao-Lin,Yang, Xiao-Jin,Shao, Jing-Fan,Guo, Feng-Jin,Feng, Jie-Xiong Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.15
Treating the osteosarcoma (OSA) remains a challenge. Current strategies focus on the primary tumor and have limited efficacy for metastatic OSA. A better understanding of the OSA pathogenesis may provide a rational basis for innovative treatment strategies especially for metastases. The aim of this review is to give an overview of the molecular mechanisms of OSA tumorigenesis, OSA cell proliferation, apoptosis, migration, and chemotherapy resistance, and how improved understanding might contribute to designing a better treatment target for OSA.
Association between Fecal Bile Acids and Colorectal Cancer: A Meta-analysis of Observational Studies
Jin Lu Tong,Jun Shen,Guo Quan Fan,Shu Dong Xiao,Zhi Hua Ran 연세대학교의과대학 2008 Yonsei medical journal Vol.49 No.5
Purpose: To provide a systematic review with meta-analysis for addressing the relationship between fecal bile acids (FBAs) and colorectal cancer. Materials and Methods: Electronic databases were searched for all observational studies that examined the relationship between FBAs and colorectal cancer or adenoma, and calculated weighted mean difference (WMD) and 95% confidence interval (CI). Publication bias was assessed with funnel plot. Results: Twenty case-control or cohort studies were identified. All studies were pooled to assess the relationship between total FBAs and cancer/adenoma of the large bowel, however, no association was seen (WMD 0.61mg/g freeze-dried feces; 95% CI: -0.35-1.57). Significantly increased concentration of chenodeoxycholic acid (CDCA) was seen while pooling to assess the relationship between CDCA and cancer/adenoma of the large bowel (WMD 0.13 mg/g freeze-dried feces; 95% CI: 0.01-0.25), especially for colorectal cancer (WMD 0.28mg/g freeze-dried feces; 95% CI: 0.10-0.46). However, no significant differences in deoxycholic acid (DCA), lithocholic acid (LCA), and primary and secondary bile acids, were seen between patients with cancer and patients with matched controls regardless of fixed and random effects models. Conclusion: CDCA might play a role in the etiology of colorectal cancer.
Fan, Minyu,Domblesky, Joseph,Jin, Kai,Qin, Liang,Cui, Shengqiang,Guo, Xunzhong,Kim, Naksoo,Tao, Jie Elsevier 2016 Materials & Design Vol.99 No.-
<P><B>Abstract</B></P> <P>It is of great significance in high-temperature aeroengine applications for large-surface-area TiAl laminate composites to be fabricated into Ti-Al<SUB>3</SUB>Ti parts by plastic forming and subsequent vacuum hot pressing. Then the original layer thicknesses have an important influence on the interface bonding and mechanical properties of TiAl laminate composites, but only few reports about it have been published so far. In the present study, vacuum hot pressing was employed to fabricate TiAl laminate composites using Ti and Al foils of different thickness. The resulting interface bond and mechanical properties of TiAl laminate composites were then studied to determine the optimum sheet configuration and thickness. To further assess their formability and develop a forming limit diagram (FLD), 0.1/0.15 TiAl laminate composites were operated on bending and forming tests to provide guidance for subsequent plastic forming of complex geometries. The results indicated that hot pressed laminates composed of alternating 0.1 (Al) and 0.15 (Ti) mm thick sheets exhibited enhanced superior interface bonding and mechanical properties compared with 0.2/0.25 and 0.4/0.4 sheets. The 0.1/0.15 TiAl laminate composites had excellent bending characteristics and reasonable formability. Fabrication of a drawn cup further confirms the potential for hot pressed TiAl laminate composites to be fabricated into complex shapes.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The large-surface-area TiAl laminate composites were prepared by vacuum hot pressing. </LI> <LI> The effect of original layer thicknesses on the interface bonding and mechanical properties was investigated. </LI> <LI> Bending and forming tests proved the excellent bending characteristics and reasonable formability </LI> <LI> Fabrication of a drawn cup further confirmed the potential for complex shapes. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Fan-Long Jin,Chun-Liu Ma,Bao-Tian Guo,박수진 대한화학회 2019 Bulletin of the Korean Chemical Society Vol.40 No.10
The surface of graphene (GE) was modified with a silane coupling agent, and its surface characteristics were investigated. Epoxy resin/GE nanocomposites were prepared via solution blending. The effect of the GE content on the thermal stability, flexural properties, impact strength, and morphology of the nanocomposites was studied. The thermal stability of the epoxy resin increased with the addition of pristine GE and surface-modified GE. The flexural strength, elastic modulus, and impact strength of the nanocomposites with surface-modified GE increased significantly with increasing GE content. Scanning electron microscopy images of the nanocomposites with surface-modified GE show a ductile deformation morphology, which is consistent with their high impact strength.
Jin-Mei Fan,Pin-JunWan,Qiang Fu,Na Li,Li-Li Mu,Guo-Qing Li 한국응용곤충학회 2014 Journal of Asia-Pacific Entomology Vol.17 No.3
Sogatella furcifera is a serious phloem-feeding pest of rice. Rice phloem sap cannot meet its nutrition requirementfor some essential amino acids. The yeast-like symbionts (YLSs) have been hypothesized to aid S. furcifera inamino acid metabolism to compensate for the unbalanced amino acid composition in the rice phloem. In thepresent paper, two full-length cDNAs of putative alanine aminotransferases (ALTs) were obtained fromS. furcifera. Sequence similarity and phylogenetic analysis suggested that one ALT came from the YLSs (SfylsALT)whereas the other ALT originated from S. furcifera (SfALT1). Quantitative reverse transcription polymerase chainreaction revealed that SfylsALT clearly had a high transcript level in the abdomen. In contrast, SfALT1 was broadlyexpressed in the head, wings, legs, thorax and abdomen. Since YLSs were distributed in the abdominal fat body,ovary and eggs, and were not located in the head, leg, thorax and wing, the tissue expression patterns alsosuggested that SfylsALT came fromthe YLSs' genome and SfALT1 was from the host.Moreover, the enzyme activitiesof Sf9 cell-expressed SfALT1 and SfylsALT proteins were tested in vitro. The isolated suspensions containingeither of the two proteins showed higher ALT activities than that fromblank cells or egfp-expressed cells. It seemsthat SfALT1 and SfylsALT encode functional alanine aminotransferases.
Cylindrical and Conical Mirror Anamorphosis for Image Display
Fan Guo,Hui Peng,Jin Tang 보안공학연구지원센터 2016 International Journal of Signal Processing, Image Vol.9 No.3
Anamorphosis is a deformed image that appears in its true shape only from a certain point of view, out of which it is seen distorted and the illusionary effect is lost. In this paper, we describe a simple method for achieving anamorphosis by utilizing image coordinate transformation. The novelty of this work is the creation of the framework for the implementation of cylindrical and conical mirror anamorphosis, resulting in a tool for artists and designers. A qualitative evaluation approach is proposed to carry on comparative study with other methods. Experimental results demonstrate that using the proposed method one may get a good undistorted image in a mirror with much less user-interaction compared to other approaches. In addition to implementing the illusionary effect, some applications of the anamorphosis are also presented.
Fan, M.,Yu, W.,Wang, W.,Guo, X.,Jin, K.,Miao, R.,Hou, W.,Kim, N.,Tao, J. Springer Science + Business Media 2017 JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE Vol.26 No.1
<P>Thin-multilayer Ti/Al laminates were prepared by one-step explosive bonding method to investigate the interface bonding and mechanical properties owing to their potential application in aerospace and auto industry. It was found that Ti/Al laminates prepared at the detonation velocity of 2100 m/s exhibited superior surface quality without any defects in comparison with other detonation velocities owing to the optimum explosive pressure and impact velocity. The interface morphologies and element distribution of Ti/Al laminates prepared at the detonation velocity of 2100 m/s were characterized by means of SEM and EDS. The results indicated that the linear and wavy bonding interface coexisted and element diffusion occurred in the interfacial zone. Furthermore, thin-multilayer Ti/Al laminates possessed high microhardness, excellent interlaminar shear and tensile properties.</P>