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Chinese Journal of Chemical Engineering 2018年第7期26卷 1508-1512页

作者： Xiaoming Gao jiao fei Yanyan Shang Feng Fu Department of Chemistry and Chemical Engineering Shaanxi Key Laboratory of Chemical Reaction Engineering Yan'an University

By combining the photochemical reaction and liquid–liquid extraction(PODS), we studied desulfurization of model fuel and FCC gasoline. The effects of air flow, illumination time, extractants, volume ratios of extractant/fuel, and catalyst amounts on the desulfurization process of PODS were analyzed in detail. Under the conditions with the air as oxidant(150 ml·min^(-1)), the mixture of DMF–water as extractant(the volume ratio of extractant/oil of 0.5) and photo-irradiation time of 2 h, the sulfur removal rate reached only 42.63% and 39.54% for the model and FCC gasoline, respectively. Under the same conditions, the sulfur removal rate increased significantly up to79% for gasoline in the presence of Cu_2O catalyst(2 g·L^(-1)). The results suggest that the PODS combined with a Cu_2O catalyst seems to be a promising alternative for sulfur removal of gasoline.

关键词： Desulfurization Photo-oxidative Gasoline Extraction Cu2O Catalyst

Regulation of substrate surface topography on differentiation of mesenchymal stem cells

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Acta Mechanica Sinica 2020年第5期36卷 1158-1169,I0004页

作者： Bo Huo Yang Zhao Xue Bai Qing Sun fei jiao Biomechanics Lab Department of MechanicsSchool of Aerospace EngineeringBeijing Institute of TechnologyBeijing 100081China

Mesenchymal stem pells(MSCs)have been extensively used in the field of tissue engineering and regenerative *** effect of surface properties on the differentiation of MSCs is a very important issue for the design and fabrication of scaffolds or *** review is mainly focused on the morphological or topographic characteristics of cell adhesion substrate,*** area and shape for individual cell,cell density and cell-cell contact for multiple cells,substrate roughnessridge width,micropillar height,nanoparticle diameter and aspect ratio of *** results from different studies were quantitativcly analyzed using comparable or unified parameters and definitions under the specific experimental conditions such as cell source,culture time,induction medium,matrix material and differentiation *** interesting phenomena and properties were discovered by this integrated and systematic analysis,which might give insights into the regulatory mechanism of surface morphology or topography on MSCs differentiation.

关键词： Mesenchymal stem cell Adhesion morphology Surface topography Differentiation Biomaterial

MXene-MoS_(2)nanocomposites via chemical vapor deposition with enhanced electrocatalytic activity for hydrogen evolution

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Nano Research 2023年第7期16卷 8937-8944页

作者： Ruijie Zhang Yajing Sun fei jiao Lin Li Dechao Geng Wenping Hu Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of ChemistrySchool of ScienceTianjin University and Collaborative Innovation Center of Chemical Science and EngineeringTianjin 300072China College of Chemistry Tianjin Normal UniversityTianjin 300387China

As a new paradigm of material science,two-dimensional(2D)heterostructured composites have attracted extensive interests because of combining the collective advantages and collaborative characteristics of individual building *** disulfide(MoS_(2))has demonstrated great promise as a low-cost substitute to platinum-based catalysts for electrochemical hydrogen ***,the broad adoption of MoS_(2)is hindered by its limited number of active sites and low inherent electrical *** of the promising methods to further activate MoS_(2)is coupling ***,we demonstrate for the first time the synthesis of 2D MXene-MoS_(2)nanocomposites through chemical vapor deposition(CVD)approach,thus leading to precise design in structure type and *** computational results show that nanocomposites have metallic *** to their unique 2D/2D structure,MXene-MoS_(2)nanocomposites exhibit more active catalytic sites,resulting in higher electrochemical performance,as inherited from parent excellent characteristics,and a much lower overpotential of~69 mV at a current density of 10 mA·cm^(-2) is *** work paves the way to employ CVD method by coupling engineering to construct 2D nanocomposites for energy storage applications.

关键词： MXene molybdenum disulfide(MoS_(2)) chemical vapor deposition hydrogen evolution reaction

Modification of MgO·Al_2O_3 spinel inclusions in Al-killed steel by Ca-treatment

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International Journal of Minerals,Metallurgy and Materials 2011年第1期18卷 18-23页

作者： Shu-feng Yang Jing-she Li Zai-fei Wang jiao Li Lin Lin School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 China

The modification of MgO·Al2O3 spinel inclusions in Al-killed steel by Ca-treatment has been studied by industrial trials and thermodynamic *** the industrial trials,samples were taken systematically during the refining process in which the molten steel was treated by calcium,and the characters of the inclusions were analyzed using scanning electron microscopy （SEM） and energy dispersive spectra （EDS）.The effects of Ca-treatment were evaluated by tracking the compositions of the *** results show that the modification of MgO·Al2O3 spinel inclusions by Ca-treatment is effective and the transformation sequence of the inclusions during the refining is Al2O3 →MgO·Al2O3 →liquid complex *** modification of spinel inclusions by Ca-treatment was calculated by FactSage 6.0 utilizing its free-energy minimization *** results of thermodynamic calculations indicate that spinel inclusions are easier to be modified than Al2O3 inclusions and the spinel inclusions in 30CrMo steel would transform to liquid complex inclusions when the content of dissolved Ca in the molten steel exceeds 1×***,the results show that adding more calcium into the molten steel would lower the contents of Al2O3 and MgO and increase the CaO content of the inclusions,while the change in SiO2 content is little.

关键词： steel metallurgy inclusions magnesia alumina chemical modification thermodynamics

Thermoelectric Properties of an Indandione-Terminated Quinoidal Compound:Effect of the n-Type Dopants

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Chinese Journal of Chemistry 2024年第9期42卷 997-1003页

作者： Yingying Liu Cheng Wang Tianzuo Wang fei jiao Shaoqiang Dong Yunfeng Deng Yanhou Geng School of Materials Science and Engineering and Tianjin Key Laboratory of Molecular Optoelectronic Science Tianjin Universityand Collaborative Innovation Center of Chemical Science and Engineering(Tianjin)Tianjin 300072China Institute of Molecular Aggregation Science Tianjin UniversityTianjin 300072China Tianjin Key Laboratory of Molecular Optoelectronic Science Department of ChemistrySchoolof ScienceTianjin UniversityTianjin300072China Joint Schoolof NationalUniversity of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New City FuzhouFujian350207China

The investigation of n-type doping holds a significant interest for the application of ***,the doping of an indandione-terminated compound Q-4F with a singlet open-shell ground state was studied using two n-dopants N-DMBI and *** of these two dopants can effectively dope Q-4F due to the large offset between the singly occupied molecular orbital(SOMO)of dopants and the lowest unoccupied molecular orbital(LUMO)of Q-4F.N-DMBI has a higher doping ability than LCV as demonstrated by the UV-vis-NIR and EPR ***,in comparison to N-DMBI doped Q-4F,LCV doped system exhibits much higher electrical conductivity and power factor due to its unperturbed molecular packing and favorable morphology after *** optimal conductivity of LCV doped Q-4F is 7.16×10^(-2)±0.16 S·cm^(-1) and the highest power factor reaches 12.3±0.85μW·m–1·K^(-2).These results demonstrate that the modulation of n-dopants is a powerful strategy to balance the doping efficiency and microstructure toward a maximum thermoelectric performance.

关键词： n-Doping Indandione Quinoidal compounds Organic thermoelectrics Electron transfer Organic electronics Energy conversion

Efficient and multifunctional terahertz polarization control device based on metamaterials

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Chinese Physics B 2020年第11期29卷 364-369页

作者： Xiao-fei jiao Zi-Heng Zhang Yun Xu Guo-Feng Song Institute of Semiconductors Chinese Academy of SciencesBeijing 100083China College of Materials Science and Opto-Electronic Technology University of Chinese Academy of SciencesBeijing 100049China Beijing Key Laboratory of Inorganic Stretchable and Flexible Information Technology Beijing 100083China

Terahertz polarization devices are an important part of terahertz optical *** terahertz polarization devices rely on birefringent crystals,and their performances are limited by the material *** this work,we theoretically demonstrate that the metamaterial consisting of the medium and the periodic metal band embedded in the medium can control broadband polarization *** transmission length of the subwavelength waveguide mode gives rise to a broadband transmission *** resonant cavity structure formed by the dielectric layer and the waveguide layer possesses a high transmission *** optimizing the metamaterial structure parameters,we design a high-efficient(>90%)quarter-wave plate over a frequency range of 0.90 THz-1.10 THz and a high-efficient(>90%)half-wave plate over a frequency range of 0.92 THz-1.02 ***,due to the anisotropy of the structure,the metamaterials with the same structural parameters can achieve the function of the polarized beam splitting with an efficiency of up to 99%over a frequency range of 0.10 THz-0.55 ***,the designed metamaterial has a multifunctional polarization control effect,which has potential applications in the terahertz integrated polarization optical system.

关键词： terahertz metamaterials waveguide transmission

Association between mitochondrial DNA haplotype compatibility and increased efficiency of bovine intersubspecies cloning

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Journal of Genetics and Genomics 2011年第1期38卷 21-28页

作者： Hao Yan Zhonghai Yan Qingwen Ma fei jiao Shuzhen Huang Fanyi Zeng Yitao Zeng Shanghai Institute of Medical Genetics Shanghai Jiao Tong University 24/1400 West Beijing Road Shanghai 200040 China The Key Lab of Embryo Molecular Biology Ministry of Health China and Shanghai Lab of Embryo and Reproduction Engineering 24/1400 West Beijing Road Shanghai 200040 China Institute of Medical Science Shanghai Jiao Tong University School of Medicine 280 South Chongqing Road Shanghai 200025 China

Reconstructed embryos derived from intersubspecies somatic cell nuclear transfer （SCNT） have poorer developmental potential than those from intrasubspecies SCNT. Based on our previous study that Holstein dairy bovine （HD） mitochondrial DNA （mtDNA） haplotype compatibility between donor karyoplast and recipient cytoplast is crucial for SCNT embryo development, we performed intersubspecies SCNT using HD as donor karyoplast and Luxi yellow heifer （LY） as recipient cytoplast according to mtDNA haplotypes determined by polymerase chain reaction- restriction fragment length polymorphism （PCR-RFLP） analysis. The results demonstrated that intersubspecies mtDNA homotype SCNT embryos had higher pre- and post-implantation developmental competence than intrasubspecies mtDNA heterotype embryos as well as improved blastocyst reprogramming status, including normal H3K9 dimethylation pattern and promoter hypomethylation of pluripotent genes such as Oct4 and Sox2, suggesting that intersubspecies SCNT using LY oocytes maintains HD cloning efficiency and may reprogram HD nuclei to develop into a normal cloned animal ultimately. Our results indicated that karyoplast-cytoplast interactions and mtDNA haplotype compatibility may affect bovine intersubspecies SCNT efficiency. This study on bovine intersubspecies SCNT is valuable for understanding the mechanisms of mtDNA haplotype compatibility between karyoplast and cytoplast impacting the bovine SCNT efficiency, and provides an alternative and economic resource for HD cloning.

关键词： Somatic cell nuclear transfer (SCNT) Mitochondria mtDNA haplotype Epigenetic modification Bovine Intersubspecis Intrasubspecis Developmental competence

Highly crystalline,highly stable n-type ultrathin crystalline films enabled by solution blending strategy toward organic single-crystal electronics

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Chinese Chemical Letters 2024年第1期35卷 321-325页

作者： Yang Liu Shuyu Li Yihan Zhang Xiaoting Zhu Fangxu Yang fei jiao Wenping Hu Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of ChemistrySchool of ScienceTianjin UniversityTianjin 300072China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China

The development of n-type semiconductor is still far behind that of p-type semiconductor on account of the challenges in enhancing carrier mobility and environmental ***,by blending with the polymers,n-type ultrathin crystalline thin film was successfully prepared by the method of meniscus-guided ***,the n-type crystalline films exhibit ultrathin thickness as low as 5 nm and excellent mobility of 1.58 cm^(2) V^(-1) s^(-1),which is outstanding in currently reported organic n-type ***,the PS layer provides a high-quality interface with ultralow defect which has strong resistance to external interference with excellent long-term stability,paving the way for the application of n-type transistors in logic circuits.

关键词： n-type organic field effect transistors Ultrathin film High-performance Composites

Severe irinotecan-induced toxicity in a patient with UGT1A1*28 and UGT1A1*6 polymorphisms

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World Journal of Gastroenterology 2013年第24期19卷 3899-3903页

作者： Jian-Ming Xu Yan Wang fei-jiao Ge Li Lin Ze-Yuan Liu Manish R Sharma Affiliated Hospital Cancer Center Academy of Military Medical Science Clinical Pharmacokinetic Laboratory Affiliated HospitalAcademy of Military Medical Science Department of Medicine Section of Hema-tology/Oncology University of Chicago

Many studies have demonstrated the impact of UGT1A1 on toxicity of irinotecan. In particular, patients bear-ing UGT1A1*28 (TA 7/7) have a higher risk of severe neutropenia and diarrhea. Based on this, prescribers of irinotecan are advised that patients with UGT1A1*28 (TA 7/7) should start with a reduced dose of irinotecan, although a particular dose is not specified. Research in Asian countries has shown a lower incidence of UG-T1A1*28 (TA 7/7), while UGT1A1*6 (A/A) is more often found and is associated with severe irinotecan-related neutropenia. We report here a case of a metastatic colorectal cancer patient who is heterozygous for the UGT1A1*28 polymorphism (TA 6/7) as well as the UG-T1A1*6 polymorphism (G/A). The patient was treated with FOLFIRI for 9 cycles and underwent two irinote-can dose reductions according to pharmacokinetic data regarding exposure to the active metabolite, SN-38. Simultaneous heterozygous UGT1A1*28 and UGT1A1*6 polymorphisms may produce higher exposure to SN-38 and a higher risk of adverse effects related to irinote-can. Additional studies will be necessary to determine the optimal starting dose of irinotecan for patients with both UGT1A1*28 and UGT1A1*6 polymorphisms.

关键词： Irinotecan Toxicity UGT1A1*28 UGT1A1*6 Polymorphism

Development of Chinese Lotus Culture

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海外英语 2013年第1X期 279-281页

作者： HE jiao-fei Institute of Tourism Xi'an International Studies University

There is a very long history of lotus culture in *** has a very high medicinal *** seed is nutritious *** has anti-aging,prolong the life of the *** ancient time,the image of lotus was recorded in various books and literature *** is a common and tasty food in *** people like lotus not only because of its useful value,but al so because of its holy *** people even think highly of soul of lotus.

关键词： lotus medicinal value culture