The Aesthetic Function of New Media “Serious Games”

JianHua Yang,Zhao Kun,Yin Min 중앙대학교 영상콘텐츠융합연구소 2015 TechArt :Journal of Arts and Imaging Science Vol.2 No.1

Subsurface Channel Detection Using Color Blending of Seismic Attribute Volumes

Jianhua Cao,Yang Yue,Kunyu Zhang,Jucheng Yang,Xiankun Zhang 보안공학연구지원센터 2015 International Journal of Signal Processing, Image Vol.8 No.12

Color is the critical factor in seismic data interpretation and geological targets visualization. And recently, ideas of color blending have brought the enlightenment in attribute combinations for reservoir characterization in petroleum engineering. In this paper, we present this approach of color blending in different color modes and its application in subsurface channel detection by using seismic attributes data. The color models include RGB model, CMY model and HSV model. We firstly calculate sensitive attributes from three dimensional seismic data, including envelop, coherence and spectral decomposition, etc. Then three types of normalized seismic attributes are set as input into the primary color channel of the color models respectively, and then mixed together to create one color blended volume in three dimensional visualization environment. The blended volume has plenty of geological information coming from the three input attributes, resulting in better resolution for channels than the single attribute. Applications in one survey of DQ oilfield show that channels are vividly imaged with special lighted color on the blended volume slices. The spatial distribution characteristics of channels, including the shapes and branches, are clearly depicted. And for the three blending methods, the RGB model is mostly preferred although the CMY model has almost similar performances in channel detection, while HSV model is slightly inferior in this case.

Effect of Interchain Hydrogen Bond on the Water Solubility and Mechanical Properties of PLGA/PEO Blend

Jianhua Yang,Zhean Xia,Mingjian Cao,Xiangxin Ran 한국고분자학회 2020 폴리머 Vol.44 No.4

Polyethylene oxide (PEO) possesses poor mechanical properties, which limits its application. For the purpose of improving the mechanical properties of water-soluble films, blend of polylactic glycolic acid (PLGA) with PEO was prepared by melt blending. The hydrogen bonding between PEO and PLGA was investigated by Fourier transform infrared spectrometer. The crystallization behavior, water solubility, and mechanical properties were evaluated. The results showed that there was a hydrogen bonding force between PLGA and PEO, and this force can improve the mechanical strength and water absorption of the film. When the PLGA content reached 20 wt%, the tensile strength and the elongation at break achieved a maximum 26.1MPa and 771.2%, respectively. Compared to neat PEO, blend with 10 wt% of PLGA had considerably higher water absorption capacity. When the PLGA content was 40 wt%, the film would not disperse in water.

Evaluation of Rock Vibration Generated in Blasting Excavation of Deep-buried Tunnels

Jianhua Yang,Wenbo Lu,Peng Yan 대한토목학회 2018 KSCE JOURNAL OF CIVIL ENGINEERING Vol.22 No.7

The experimental tunnels of the China Jinping Underground Laboratory are constructed in a maximum overburden depth of 2375 mand subjected to extremely high in situ stress more than 50 MPa. When these deep-buried tunnels are excavated with the method ofdrill and blast, the surfaces created by blasting are generated almost instantaneously, and thus the initial stress on these surfaces is alsosuddenly released. This transient release of in situ stress causes elastic waves to propagate in rock masses and may have an importanteffect on the subsequent rock vibration. In this study, a three-dimensional FEM modeling in combination with site investigation isconducted to research the Peak Particle Velocity (PPV) attenuation and frequency characteristics for the rock vibration induced bytransient stress release and its combined actions with blast loading. The results indicate that the transient release of the high stressgenerates considerable vibration velocity that is comparable to that of blast loading. It is not a negligible excitation for the rockvibration generated in blasting excavation of deep-buried tunnels. Furthermore, the vibration induced by transient stress release hasmuch lower frequency than that caused by blast loading. This causes the unloading vibration to decay more slowly and become themajor vibration component at far distances. Also, the effect of transient stress release is found to enhance intensity of the totalvibration and furthermore cause an increase in its low-frequency content. On the basis of this, the allowable charge amount per delayand the minimum safety distance are finally discussed with a special emphasis on the contributions of the transient stress release tothe total vibration.

On the Design Ability of Character Image in Animation Art

Jianhua Yang 중앙대학교 영상콘텐츠융합연구소 2014 TechArt :Journal of Arts and Imaging Science Vol.1 No.4

Backbone Conformation Tuning of Carboxylate-Functionalized Wide Band Gap Polymers for Efficient Non-Fullerene Organic Solar Cells

Chen, Jianhua,Wang, Lei,Yang, Jie,Yang, Kun,Uddin, Mohammad Afsar,Tang, Yumin,Zhou, Xin,Liao, Qiaogan,Yu, Jianwei,Liu, Bin,Woo, Han Young,Guo, Xugang American Chemical Society 2019 Macromolecules Vol.52 No.1

<P>Two carboxylate-functionalized wide band gap polymers, 2TC-TT-BDTFT and 2T-TTC-BDTFT, which feature a fluorinated benzodithiophene (BDTFT)-<I>alt</I>-2,5-di(thiophen-2-yl)thieno[3,2-<I>b</I>]thiophene (2T-TT) backbone having different carboxylate attaching positions, were designed and synthesized. By variation of the substitution position of carboxylate groups on the 2T-TT unit, the backbone conformation of the designed building blocks 2TC-TT and 2T-TTC and their corresponding donor-acceptor polymers was fine-tuned as demonstrated by single crystal study and DFT calculation, thus yielding a large device performance difference in organic solar cells. As a result of the relatively higher planarity of the 2T-TTC unit in which the two carboxylate groups were attached on the inner thieno[3,2-<I>b</I>]thiophene moiety, the 2T-TTC-BDTFT polymer exhibited a red-shifted UV-vis absorption, stronger aggregation, and improved charge transport property than its polymer analogue 2TC-TT-BDTFT, in which the two outer thiophene rings were functionalized with carboxylate groups. Benefiting from the improved exciton dissociation and charge collection efficiency, better film morphology, and higher photoresponse, non-fullerene organic solar cells based on 2T-TTC-BDTFT:m-ITIC achieved a power conversion efficiency (PCE) of 11.15% with a fill factor (FF) of ∼70%, while the 2TC-TT-BDTFT:m-ITIC cells showed a relatively lower PCE of 9.65% and FF of 59.31%. The much higher FF of 2T-TTC-BDTFT-based solar cells reflects the great merit of the carboxylation on thienothiophene moiety rather than the outer thiophene counterpart. Therefore, the modulation of the carboxylate position on polymer backbones is an efficient strategy to tune the backbone conformation, interchain packing, film morphology, and the resulting optical, electrical, and photovoltaic properties. Moreover, both the 2T-TTC-BDTFT:m-ITIC and 2TC-TT-BDTFT:m-ITIC solar cells showed excellent stability during annealing and long-term storage. These results demonstrate that carboxylate-functionalized 2T-TTC and 2TC-TT have great potentials as a weak electron-accepting building block for wide band gap polymers for high-performance non-fullerene organic solar cells, and the carboxylate position on the polymer backbones is critical for performance improvement of organic photovoltaic devices.</P> [FIG OMISSION]</BR>

Backbone Coplanarity Tuning of 1,4-Di(3-alkoxy-2-thienyl)-2,5-difluorophenylene-Based Wide Bandgap Polymers for Efficient Organic Solar Cells Processed from Nonhalogenated Solvent

Liao, Qiaogan,Yang, Kun,Chen, Jianhua,Koh, Chang Woo,Tang, Yumin,Su, Mengyao,Wang, Yang,Yang, Yinhua,Feng, Xiyuan,He, Zhubing,Woo, Han Young,Guo, Xugang American Chemical Society 2019 ACS APPLIED MATERIALS & INTERFACES Vol.11 No.34

<P>Halogenated solvents are prevailingly used in the fabrication of nonfullerene organic solar cells (NF-OSCs) at the current stage, imposing significant restraints on their practical applications. By copolymerizing phthalimide or thieno[3,4-<I>c</I>]pyrrole-4,6-dione (TPD) with 1,4-di(3-alkoxy-2-thienyl)-2,5-difluorophenylene (DOTFP), which features intramolecular noncovalent interactions, the backbone planarity of the resulting DOTFP-based polymers can be effectively tuned, yielding distinct solubilities, aggregation characters, and chain packing properties. Polymer DOTFP-PhI with a more twisted backbone showed a lower degree of aggregation in solution but an increased film crystallinity than polymer DOTFP-TPD. An organic thin-film transistor and NF-OSC based on DOTFP-PhI, processed with a nonhalogenated solvent, exhibited a high hole mobility up to 1.20 cm<SUP>2</SUP> V<SUP>-1</SUP> s<SUP>-1</SUP> and a promising power conversion efficiency up to 10.65%, respectively. The results demonstrate that DOTFP is a promising building block for constructing wide bandgap polymers and backbone coplanarity tuning is an effective strategy to develop high-performance organic semiconductors processable with a nonhalogenated solvent.</P> [FIG OMISSION]</BR>

RNA m5C modification upregulates E2F1 expression in a manner dependent on YBX1 phase separation and promotes tumor progression in ovarian cancer

Liu Xiaoyi,Wei Qinglv,Yang Chenyue,Zhao Hongyan,Xu Jie,Mobet Youchaou,Luo Qingya,Yang Dan,Zuo Xinzhao,Chen Ningxuan,Yang Yu,Li Li,Wang Wei,Yu Jianhua,Xu Jing,Liu Tao,Yi Ping 생화학분자생물학회 2024 Experimental and molecular medicine Vol.56 No.-

5-Methylcytosine (m5C) is a common RNA modification that modulates gene expression at the posttranscriptional level, but the crosstalk between m5C RNA modification and biomolecule condensation, as well as transcription factor-mediated transcriptional regulation, in ovarian cancer, is poorly understood. In this study, we revealed that the RNA methyltransferase NSUN2 facilitates mRNA m5C modification and forms a positive feedback regulatory loop with the transcription factor E2F1 in ovarian cancer. Specifically, NSUN2 promotes m5C modification of E2F1 mRNA and increases its stability, and E2F1 binds to the NSUN2 promoter, subsequently reciprocally activating NSUN2 transcription. The RNA binding protein YBX1 functions as the m5C reader and is involved in NSUN2-mediated E2F1 regulation. m5C modification promotes YBX1 phase separation, which upregulates E2F1 expression. In ovarian cancer, NSUN2 and YBX1 are amplified and upregulated, and higher expression of NSUN2 and YBX1 predicts a worse prognosis for ovarian cancer patients. Moreover, E2F1 transcriptionally regulates the expression of the oncogenes MYBL2 and RAD54L, driving ovarian cancer progression. Thus, our study delineates a NSUN2-E2F1-NSUN2 loop regulated by m5C modification in a manner dependent on YBX1 phase separation, and this previously unidentified pathway could be a promising target for ovarian cancer treatment.

Predominant expression of exon 7 skipped SMN mRNAs in lung based on analysis of transcriptome sequencing datasets

Yang, Xiaoming,Shen, Haihong,Gao, Xue,Zheng, Xuexiu,Qin, Ryan,Zhou, Jianhua Springer-Verlag 2014 NEUROLOGICAL SCIENCES Vol.35 No.3

Modified organic reagent for deeply purifying crude TiCl4: an in-depth study on key component and mechanism

Yang Shuyi,Xing Zhenqiang,E Tao,Liu Lin,Qian Jianhua 한국탄소학회 2022 Carbon Letters Vol.32 No.3

Organic reagent is considered as one of the most promising reductants for deeply removing vanadium (V) trichloride oxide (VOCl3) from crude titanium tetrachloride (TiCl4). Nevertheless, indeterminate active component and unclearly removal mechanisms appear to be the obstacles to separate VOCl3 from TiCl4 using organic reagent. Herein we conduct the experiment to explore it. Firstly, the organic reagents are obtained from enterprise (noted as EOR1–EOR7), and then it is determined that carbon aromatic (CA) is the active component for removing VOCl3. Furthermore, modified organic reagents (noted as MOR1–MOR4) are prepared via adding aromatic hydrocarbon oil and stearic acid to EOR7, then indicating that MOR3 is endowed with the best capacity to remove VOCl3. In addition, the residues obtained from distillation experiment are comprehensively analyzed (using X-ray diffraction (XRD), transmission electron microscope (TEM) and scanning electron microscope (SEM) etc.), revealing that porous amorphous carbon that deriving from MOR, plays an excellent role in removing VOCl3 from TiCl4 system. Therefore, the removal mechanisms can be explained like that porous amorphous carbon reduces VOCl3 into insoluble vanadium (III) chloride (VCl3) and vanadium (IV) oxide dichloride (VOCl2), and then they are separated via adsorption process, with the help of porous amorphous carbon.