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Applied Mathematics(A Journal of Chinese Universities) 2024年第1期39卷 181-190页

作者： REN Guang-zhen SHI Yun kang qian-qian Department of Mathematics Zhejiang International Studies UniversityHangzhou 310023China Department of Mathematics Zhejiang University of Science and TechnologyHangzhou 310023China

The tangential k-Cauchy-Fueter operator and k-CF functions are counterparts of the tangential Cauchy–Riemann operator and CR functions on the Heisenberg group in the theory of several complex variables,*** this paper,we introduce a Lie group that the Heisenberg group can be imbedded into and call it generalized complex *** investigate quaternionic analysis on the generalized complex *** also give the Penrose integral formula for k-CF functions and construct the tangential k-Cauchy-Fueter complex.

关键词： the generalized complex Heisenberg group the tangential k-Cauchy-Fueter type operator Penrose-type integral formula

Facile solution-processed molybdenum oxide as hole transporting material for efficient organic solar cell

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Journal of Energy Chemistry 2022年第6期31卷 108-114,I0004页

作者： qian kang Chenyi Yang Bowei Xu Jianhui Hou State Key Laboratory of Polymer Physics and Chemistry Beijing National Laboratory for Molecular SciencesInstitute of Chemistry Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Chemical Resource Engineering College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China

The large energy barrier in hole extraction still remains a great challenge in developing hole transporting layer (HTL) materials for organic solar cells (OSCs).Thus,solution-processed HTL materials with excellent hole collection ability and good compatibility with large-area processing technique are strongly desired for ***,we developed a cost-effective and solution-processed MoO_(3)HTL for efficient *** adding a small amount of glucose as reducing reagent into the ammonium molybdate precursor solution,a deeply n-doped MoO_(3),namely G:Mo,was prepared through the sol–gel *** to pristine MoO_(3),the conductivity of G:Mo was enhanced by two orders of magnitude,which greatly improved the hole collection ability of the *** with G:Mo can exhibit comparable PCE to the PEDOT:PSS *** PBDB-TF:BTP-eC9 as the active layer,a PCE of 17.1%is obtained for the device,which is the highest PCE value for OSC using a solution-processed MoO_(3)*** importantly,G:Mo is well compatible with the blade-coating *** OSC using a blade-coated G:Mo showed almost no PCE loss as compared to the device with spin-coated G:Mo *** results from this work indicate that G:Mo is a promising HTL material for the practical production of OSCs.

关键词： Printable n-doping Molybdenum oxide High conductivities Anode interlayers

Advances on systems metabolic engineering of Bacillus subtilis as a chassis cell

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Synthetic and Systems Biotechnology 2020年第4期5卷 245-251页

作者： Mengjie Xiang qian kang Dawei Zhang Tianjin Institute of Industrial Biotechnology Chinese Academy of SciencesTianjin300308People's Republic of China Key Laboratory of Systems Microbial Biotechnology Chinese Academy of SciencesTianjin300308People's Republic of China University of Chinese Academy of Sciences Beijing100049People's Republic of China

The Gram-positive model bacterium Bacillus subtilis,has been broadly applied in various fields because of its low pathogenicity and strong protein secretion ability,as well as its well-developed fermentation *** is considered as an attractive host in the field of metabolic engineering,in particular for protein expression and secretion,so it has been well studied and applied in genetic *** this review,we discussed why *** is a good chassis cell for metabolic *** also summarized the latest research progress in systematic biology,synthetic biology and evolution-based engineering of ***,and showed systemic metabolic engineering expedite the harnessing *** for bioproduction.

关键词： Bacillus subtilis Systems metabolic engineering Systematic biology Synthetic biology Evolutionary engineering

Significant influence of doping effect on photovoltaic performance of efficient fullerene-free polymer solar cells

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Journal of Energy Chemistry 2020年第4期29卷 40-46页

作者： qian kang Qi Wang Cunbin An Chang He Bowei Xu Jianhui Hou State Key Laboratory of Polymer Physics and Chemistry Beijing National Laboratory for Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China

The modification mechanism of the water/alcohol cathode interlayer is one of the most complicated problems in the field of organic photovoltaics,which has not been clearly elucidated yet;this greatly restricts the further enhancement of the PCE for polymer solar ***,we clarified the different effects of PFN and its derivatives,namely,poly[(9,9-bis(3’-((N,N-dimethyl)-N-ethylammonium)-propyl)-2,7-fluorene)-alt-2,7-(9,9-dioctylfluorene)](PFN-Br) in modifying fullerene-free *** is found for the first time that doping on IT-4F by the amino group of PFN leads to the unfavorable charge accumulation,and hence,forms a dense layer of electronegative molecule due to the poor electron transport capacity of the non-fullerene acceptor *** electronegative molecular layer can block the electron transfer from the active layer to the interlayer and cause serious charge recombination at the active layer/cathode *** mechanism could be verified by the ESR measurement and electron-only *** replacing PFN with PFN-Br,the excessive doping effect between the cathode interlayer and IT-4F is eliminated,by which the charge transport and collection can be greatly *** a result,a high PCE of 13.5%was achieved in the fullerene-free PSCs.

关键词： Cathode interlayer Doping effect Electron transport Power conversion efficiency Electron-only device

蠲痹汤含药血清调控线粒体自噬抑制白细胞介素1β诱导的关节软骨细胞损伤

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中国组织工程研究 2025年第14期29卷 2882-2891页

作者：郑永智陈飞飞康乾晋春阳王若秦河南省中医院关节病科河南省郑州市450000 河南省胸科医院结核内科河南省郑州市450000

背景:软骨细胞线粒体自噬的缺陷会引起细胞凋亡和基质消失等软骨细胞退行性病变的变化。目的:探讨蠲痹汤含药血清对白细胞介素1β诱导的大鼠膝关节软骨细胞炎症反应和凋亡的影响及可能作用机制。方法:50只雄性SD大鼠随机给予生理盐水、... 详细信息

背景:软骨细胞线粒体自噬的缺陷会引起细胞凋亡和基质消失等软骨细胞退行性病变的变化。目的:探讨蠲痹汤含药血清对白细胞介素1β诱导的大鼠膝关节软骨细胞炎症反应和凋亡的影响及可能作用机制。方法:50只雄性SD大鼠随机给予生理盐水、蠲痹汤低、中、高剂量(1.24,2.48,4.96 g/kg)、塞来昔布(阳性药物),连续灌胃2周后获得含药血清。①分离软骨细胞,将其随机分为对照组、白细胞介素1β组、蠲痹汤低、中、高剂量含药血清组及阳性药物血清组。CCK-8法检测细胞存活率、免疫荧光双染检测线粒体自噬水平、免疫荧光检测磷酸化腺苷酸激活蛋白激酶水平、Western blot检测PTEN诱导激酶1/Parkin通路相关蛋白和裂解的半胱氨酸蛋白酶蛋白3表达、ELISA检测炎症因子水平;②分别采用PTEN诱导激酶1 siRNA和Compound C进行干预,探究AMPK/PTEN诱导激酶1/Parkin通路在蠲痹汤含药血清调控线粒体自噬中的作用。结果与结论:①与对照组比较,白细胞介素1β组软骨细胞存活率、Ⅱ型胶原蛋白表达、磷酸化腺苷酸激活蛋白激酶、PTEN诱导激酶1、Parkin和微管相关蛋白1轻链3蛋白水平以及线粒体自噬水平明显降低(P<0.05),而裂解的半胱氨酸蛋白酶蛋白3蛋白水平、白细胞介素6、白细胞介素8和肿瘤坏死因子α水平显著升高(P<0.05);与白细胞介素1β组比较,蠲痹汤各剂量含药血清组和阳性药物血清组上述各项指标呈现相反的变化(P<0.05);②PTEN诱导激酶1 siRNA可显著抑制蠲痹汤含药血清对白细胞介素1β处理软骨细胞线粒体自噬的影响,降低蠲痹汤含药血清对白细胞介素1β诱导的软骨细胞炎症与凋亡的保护作用;Compound C逆转了蠲痹汤含药血清对白细胞介素1β处理软骨细胞中PTEN诱导激酶1/Parkin信号通路的影响。结论:蠲痹汤含药血清通过影响线粒体自噬水平来抑制软骨细胞炎症和凋亡,从而减轻白细胞介素1β诱导的软骨细胞退化,其机制可能与调控AMPK/PTEN诱导激酶1/Parkin通路有关。

关键词：蠲痹汤软骨细胞线粒体自噬腺苷酸激活蛋白激酶 AMPK PTEN诱导激酶1/Parkin

First-principles theory on electronic structure and floatability of spodumene

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Rare Metals 2014年第6期33卷 742-748页

作者： Gui-Chun He Hua-Mei Xiang Wei Jiang qian kang Jian-Hua Chen Faculty of Resource and Environmental Engineering Jiangxi University of Science and Technology College of Resources and Metallurgy Guangxi University

The band structure, density of states, Mulliken populations, and frontier orbital of spodumene crystal were calculated using the first-principles method based on the density functional theory（DFT） and further analyzed in detail. The calculation results reveal that the O in spodumene is the most active and easily links with H＋in the water, but the active Li is very low, so it is better to add activator to increase the concentrate grade and recovery rate of spodumene in the flotation process. Si–O bonds in spodumene crystal are mainly covalent, since the covalency of Al–O bonds is stronger than that of Li–O bonds,and minerals dissociate along the weakest Li–O bonds. In addition, the study of the frontier orbital indicates that both O and Si atoms have large contribution to the frontier orbital in the spodumene crystal. Oleate and dodecylamine are used as the collectors of spodumene. The results contribute to the understanding of crystal structures of spodumene, and can be used in guiding related practical applications.

关键词： Spodumene Electronic structure Floatability First-principles method Frontier orbital

Groundwater evapotranspiration under psammophilous vegetation covers in the Mu Us Sandy Land, northern China

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Journal of Arid Land 2017年第1期9卷 98-108页

作者： CHENG Donghui DUAN Jibo qian kang QI Lijun Yang Hongbin CHEN Xunhong School of Environmental Sciences and Engineering Chang’an University School of Nature Resources University of Nebraska-Lincoln

Groundwater is a significant component of the hydrological cycle in arid and semi-arid areas. Its evapotranspiration is an important part of the water budget because many plants are groundwater-dependent. To restore the degraded ecosystems, the need is pressing to further our understanding of the groundwater evapotranspiration（ET_g） in arid and semi-arid areas. This study employed the White method to estimate ET_g at four sites in the Mu Us Sandy Land in northern China, and the four sites are covered by Salix psammophila（SP site）, Artemisia ordosica（AO site）, Poplar alba（PA site）, and Carex enervis（CE site）, respectively. The depth of groundwater table and the duration of drainage were taken into account in calculating the specific yield（S_y） to improve the accuracy of the ET_g estimats. Our results showed that from late May to early November 2013 the ET_g were 361.87（SP site）, 372.53（AO site）, 597.86（PA site） and 700.76 mm（CE site）, respectively. The estimated ET_g rate was also species-dependent and the descending order of the ET_g rate for the four vegetation was： C. enervis, P. alba, A. ordosica, and S. psammophila. In addition, the depth of groundwater table has an obvious effect on the ET_g rate and the effect varied with the vegetation types. Furthermore, the evapotranspiration for the vegetation solely relying on the water supply from unsaturated layers above the groundwater table was much less than that for the vegetation heavily relying on the water supply from shallow aquifers.

关键词： groundwater evapotranspiration White method specific yield psammophilous vegetation Mu Us Sandy Land

Conformational Behavior of Single Circular Semiflexible Polyelectrolyte in the Presence of Multivalent Counterions

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Chinese Journal of Polymer Science 2023年第3期41卷 448-458,I0010页

作者： Zhi-Yong Yang Wen-Long Lin Ai-Hua Chai Dan Lu Nian-qian kang Lin-Xi Zhang Department of Physics Jiangxi Agricultural UniversityNanchang 330045China Lucheng College Wenzhou PolytechnicWenzhou 325006China College of data science Jiaxing UniversityJiaxing 314001China Department of Physics Zhejiang UniversityHangzhou 310027China

Langevin dynamics simulations are employed to explore the effects of chain stiffness and electrostatic interaction(EI) on the conformational behavior of a circular semiflexible polyelectrolyte(CSPE) in presence of trivalent *** investigate the effect of bending energy b and the dimensionless Bjerrum length A on the conformational behavior of the CSPE with a fixed chain *** competition among the EIs,chain stiffness and entropy of the system leads to rich conformations for the *** the b is less than or equal to 50,The shape of the CSPE changes from a oblate ring to a rod at small A,then to a toroid at intermediate A,and finally to a globule at very large ***,the globular conformation is not observed for large *** addition,we find that the number of torus ring increases with A increase,while decreases with b *** study should be helpful in gaining insight into the conformational behaviour of charged biopolymer.

关键词： Langevin dynamics simulation Circular semiflexible polyelectrolyte Trivalent counterions Electrostatic interaction

Operational spectrum reconstruction of data from the Fourier transform hyperspectral imager onboard HJ-1A satellite

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Chinese Science Bulletin 2010年第17期55卷 1808-1812页

作者： ZHAO Xiang LU Jing GONG ADu XIAO ZhengQing kang qian LI Qing State Key Laboratory of Earth Surface Processes and Resources Ecology Beijing Normal University Beijing 100875 China China Center for Resource Satellite Data and Applications Beijing 100094 China Key Lab of Virtual Geographic Environment (Nanjing Normal University) Ministry of Education Nanjing 210046 China

The HJ-1A satellite was successfully launched on September 6, 2008. The inclusion of a HyperSpectral Imager (HSI) as one of the payloads of the HJ-1A Satellite is a major milestone in the field of the remote sensing in China. It is also the first Fourier transform imaging spectrometer routinely used to acquire scientific data from a satellite orbiting Earth. This paper briefly introduces the basic imaging theories of the spatially modulated Fourier transform imaging spectrometer, and then discusses the theoretical analysis and algorithms of spectrum reconstruction. Results of the operational spectrum reconstruction for the raw data of the HJ-1A satellite Fourier transform HSI are presented. At present, the algorithms and processing flow have been used successfully in the Ground Data Processing System (GDPS) built by the China Center for Resource Satellite Data and Applications (CRESDA).

关键词：超光谱成像仪傅里叶变换成像卫星光谱重建业务数据地面数据处理系统成像光谱仪傅立叶变换

The Effect of Substrate on the Properties of Non-volatile Ferroelectric P(VDF-TrFE)/P3HT Memory Devices

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Chinese Journal of Polymer Science 2022年第6期40卷 692-699页

作者： Xiao Chu Jia-qian kang Ya Hong Guo-Dong Zhu Shou-Ke Yan Xue-Yun Wang Xiao-Li Sun State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing 100029China School of Aerospace Engineering Beijing Institute of TechnologyBeijing 100081China Department of Materials Science Fudan UniversityShanghai 200433China Key Laboratory of Rubber-Plastics Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plasticsQingdao University of Science&TechnologyQingdao 266042China

Ferroelectric poly(vinylidene fluoride-trifluoroethylene)(P(VDF-TrFE))/semiconducting poly(3-hexyl thiophene)(P3HT)blend systems have drawn great attention with their potential use for electronic applications,particularly non-volatile memory *** is essential to grasp a full understanding of the crystallization habits of the two polymers on different substrates for purposeful control of the structures of the blend and therefore the properties of the ***,the effects of structure and morphology of the blend films generated at different substrate surfaces on the ferroelectric and switching properties of related devices are *** is identified that P(VDF-TrFE)/P3HT blend films prepared on graphene substrate show not only an obvious optimization in the ferroelectric behavior of P(VDF-TrFE),but also an enhancement of the charge transport within P3HT *** employing sandwich structure constructed by silver electrode and P3HT/P(VDF-TrFE)blend film on graphene substrate,high-performance ferroelectric memory devices have been obtained,which exhibit a great electrical switching behavior with high ON/OFF ratio of about 1000 and low coercive voltage of approximately 5 *** findings provide useful guidance for fabricating highperformance ferroelectric memory devices.

关键词： P(VDF-TrFE) P3HT Graphene Memory devices Ferroelectric properties