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| 1 | A comparative study of hydrothermal aging effect on cerium and lanthanum doped Cu/SSZ-13 catalysts for NH_(3)-SCR显示文摘Ce-or La-doped Cu/SSZ-13 catalysts were prepared by a hydrothermal method and Cu,Ce or La ions were incorporated through stepwise ion exchange,The catalyst activity was measured for the ammonia selective catalytic reduction reaction.The structure and composition of catalyst were characterized by using X-ray diffraction,scanning electron microscopy,inductively coupled plasma mass spectrometry solid-state NMR,NH_(3)-TPD techniques,and the active components were examined by XPS and XANES.The results indicate that the Ce and La doping can both completely preserve the SCR activity of Cu/SSZ-13 above 300℃,but there is also a decrease of activity below 200℃.On the other hand,Ce doping is beneficial to the formation of framework aluminum,stabilizes molecular sieve framework and Cu active sites of Cu/SSZ-13,thereby improves the catalyst hydrothermal stability.But La doping will decrease the amount of framework aluminum and Cu active sites of Cu/SSZ-13 after hydrothermally aging,even destroy zeolite CHA structure.This is quite harmful to the catalyst hydrothermal stability. | Di Deng Shujun Deng Dandan He Zhiheng Wang Zhipeng Chen Yi Ji Guoping Yan Guangjin Hou Licheng Liu Hong He | 2021 | Journal of Rare Earths2021，39，8： | 5 |
| 2 | Acrylamide exposure impairs blood-cerebrospinal fluid barrier function显示文摘Previous studies show that chronic acrylamide exposure leads to central and peripheral neuropathy. However, the underlying mechanisms remained unclear. In this study, we examined the permeability of the blood-cerebrospinal fluid barrier, and its ability to secrete transthyretin and transport leptin of rats exposed to acrylamide for 7, 14, 21 or 28 days. Transthyretin levels in cerebrospinal fluid began to decline on day 7 after acrylamide exposure. The sodium fluorescein level in cerebrospinal fluid was increased on day 14 after exposure. Evans blue concentration in cerebrospinal fluid was increased and the cerebrospinal fluid/serum leptin ratio was decreased on days 21 and 28 after exposure. In comparison, the cerebrospinal fluid/serum albumin ratio was increased on day 28 after exposure. Our findings show that acrylamide exposure damages the blood-cerebrospinal fluid barrier and impairs secretory and transport functions. These changes may underlie acrylamide-induced neurotoxicity. | Xue Yao Licheng Yan Lin Yao Weijun Guan Fanxu Zeng Fuyuan Cao Yanshu Zhang | 2014 | Neural Regeneration Research2014，9，5： | 4 |
| 3 | A Wavelet-Based Fuzzy Neural Network for Interpolation of Fuzzy If-Then Rules显示文摘In this paper, a wavelet-based fuzzy neural network with its structure and a learningalgorithm is proposed and the simulation results are given to prove its feasibility. | Jiao Licheng Liu Fang Wang Ling & Zhang Yanning(State Key Lab. of RSP and Center for Neural Networks, Xidian University, Xi’an 710071, P. R. China) (This project was partly supported by the National Thud of Intercent. Expert and partly supported bythe | 1998 | Journal of Systems Engineering and Electronics1998，9，4： | 3 |
| 4 | Thermodynamic Stability of LiFeO_2 in Molten Carbonate Fuel Cell显示文摘LiFeO2, as one of candidate cathode materials or additive for molten carbonate fuel cell, has been found to be thermodynamically unstable in CO2 atmosphere at 650℃ (the condition of molten carbonate fuel cell) both by computation and experimental confirmation. | Licheng YAN, Wencong LU, Yimin DING, Jianhui MNG and Nianyi CHEN (Department of Chemistry, Shanghai University, Shanghai 201800, China) Guangyi CAO and Jianxin ZHU (Instate of Fuel Cell Technology, Jiaotong University, Shanghai 200030, China) | 2000 | Journal of Materials Science & Technology2000，16，1： | 2 |
| 5 | Pool boiling heat transfer enhancement on porous surface tube显示文摘The passive residual heat removal exchanger (PRHR HX),which is a key equipment of the passive residual heat removal system,is installed in an elevated pool.Its heat transfer performance affects security and economics of the reactor,and boiling heat transfer in the liquid surrounding the exchanger occurs when the liquid saturation temperature exceeded.The smooth tubes,which are widely used as heat transfer tubes in PRHR HX,can be replaced by some enhanced tubes to improve the boiling heat transfer capability.In this paper,the pool boiling heat transfer characteristics of smooth tube and a machined porous surface tube are investigated by using high-pressure steam condensing inside tube as heating source.Compared with smooth tube,the porous surface tube considerably enhances the boiling heat transfer,and shortens the time significantly before reaching the liquid saturation temperature.Its boiling heat transfer coefficient increases from 68% to 75%,and the wall superheat decreases by 1.5oC.Combining effect of condensation inside tube with boiling outside tube,the axial wall temperatures of heat transfer tube are neither uniform nor linear distribution.Based on these investigations,enhance mechanism of the porous surface tube is analyzed. | LI Yong YAN Changqi SUN Zhongning SUN Licheng | 2011 | Nuclear Science and Techniques2011，22，2： | 2 |
| 6 | Localized and Sustained Delivery of Erythropoietin from PLGA Microspheres Promotes Functional Recovery and Nerve Regeneration in Peripheral Nerve Injury显示文摘 | Wei Zhang Yuan Gao Yan Zhou Jianheng Liu Licheng Zhang Anhua Long Lihai Zhang Peifu Tang Ali I. Abdalla | 2015 | BioMed Research International2015，，： | 1 |
| 7 | Tumor acid microenvironment-activated self-targeting&splitting gold nanoassembly for tumor chemo-radiotherapy显示文摘Low accumulation and penetration of nanomedicines in tumor severely reduce therapeutic efficacy.Herein,a pH-responsive gold nanoassembly is designed to overcome these problems.Polyethylene glycol linked raltitrexed(RTX,target ligand and chemotherapy drug)and two tertiary amine molecules(1-(2-aminoethyl)pyrrolidine and N,N-dibutylethylenediamine)are modified on the surface of the 6-nm gold nanoparticles by lipoic acid to form gold nanoassembly defined as Au-NNP(RTX).The Au-NNP(RTX)nanoassembly could remain at about 160 nm at the blood circulation(pH 7.4),while split into 6-nm gold nanoparticles due to tertiary amine protonation at tumor extracellular pH(pH 6.8).This pH-responsive disassembly behavior endows Au-NNP(RTX)better tumor tissue permeability through the better diffusion brought by the size reduction.Meanwhile,after disassembly,more RTXs on the surface of gold nanoparticles are exposed from the shielded state of assembly along with 2.25-fold augment of cellular uptake capability.Most importantly,the results show that Au-NNP(RTX)possesses of high tumor accumulation and effective tumor penetration,thereby enhancing the tumor chemo-radiotherapy efficiency. | Xiaomin Li Licheng Yu Chuangnian Zhang Xiaoyan Niu Mengjie Sun Zichao Yan Wei Wang Zhi Yuan | 2022 | Bioactive Materials2022，7，1： | 1 |
| 8 | Post-illumination activity of Bi_(2)WO_(6) in the dark from the photocatalytic“memory”effect显示文摘Photocatalysts with the photocatalytic'memory'effect could resolve the intrinsic activity loss of traditional photocatalysts when the light illumination is turned off.Due to the dual requirements of light absorption and energy storage/release functions,most previously reported photocatalysts with the photocatalytic'memory'effect were composite photocatalysts of two phase components,which may lose their performance due to gradually deteriorated interface conditions during their applications.In this work,a simple solvothermal process was developed to synthesize Bi2WO6 microspheres constructed by aggregated nanoflakes.The pure phase Bi_(2)WO_(6) was found to possess the photocatalytic'memory'effect through the trapping and release of photogenerated electrons by the reversible chemical state change of W component in the(WO_(4))^(2–)layers.When the illumination was switched off,Bi_(2)WO_(6) microspheres continuously produced H_(2)O_(2) in the dark as those trapped photogenerated electrons were gradually released to react with O_(2) through the two-electron O_(2) reduction process,resulting in the continuous disinfection of Escherichia coli bacteria in the dark through the photocatalytic'memory'effect.No deterioration of their cycling H2O2 production performance in the dark was observed,which verified their stable photocatalytic'memory'effect. | Weiyi Yang Yan Chen Shuang Gao Licheng Sang Ruoge Tao Caixia Sun Jian Ku Shang Qi Li | 2021 | Journal of Advanced Ceramics2021，10，2： | 1 |
| 9 | Effects of rolling on characteristics of single-phase water flow in narrow rectangular ducts显示文摘 | XING Dianchuan YAN Changqi SUN Licheng | 2012 | Nuclear Engineering Design2012，247，： | 1 |
| 10 | Electrochemical realkalisation and combined corrosion inhibition of deeply carbonated historic reinforced concrete 显示文摘 | ZHANG Junxi JIANG Jun YAN Licheng et ol | | Corrosion Engineering Science and Technology 21030，48，1： | 1 |
| 11 | Effects of rolling on characteristics of sin-gle-phase water flow in narrow rectangular ducts显示文摘 | XING Dianchuan YAN Changqi SUN Licheng? | 2012 | Nucl Eng Des2012，247，： | 1 |
| 12 | The 'green' process for coloring stainless steel显示文摘 | Zhang Junxi Yan Licheng Qiao Yinan | 2005 | Transactions of the Institute of Metal Finishing2005，83，2： | 1 |
| 13 | Synthesis and characterization of manganese and copper corrole xanthene complexes as catalysts for water oxidation显示文摘 | Yan Gao Jianhui Liu Mei Wang Yong Na Bjorn A kermarkb Licheng Sun | 2007 | Tetrahedron2007，63，： | 1 |
| 14 | Highly efficient photocatalytic reduction of CO_2 and H_2O to CO and H_2 with a cobalt bipyridyl complex显示文摘The development of efficient molecular catalysts for visible-light driven CO_2 reduction, based on abundant materials, is necessary to meet energy demands and address environment problems. In this work,a Co(bpy)_2Cl_2 catalyst was developed and showed high efficiency and durability for the photocatalytic reduction of CO_2 and protons. Yields of CO and H_2 as high as 62.3 and 69.9 μmol were achieved and the turnover numbers(TONs) reached 6230 and 6990, respectively, under light irradiation(λ > 420 nm)for 4 h, indicating that the mixture gases could be a candidate as syngas. The apparent quantum yield was determined to be 2.1% for CO. Mechanistic studies revealed oxidative quenching of the photosensitizer Ru(bpy)_3Cl_2 by the catalyst. The photocatalytic performance, flexible synthesis and non-noble metal catalyst in our system show great promise for the practical application of Co(bpy)_2Cl_2 to photocatalytic reduction of CO_2. | Ya'nan Yao Yan Gao Lu Ye Hu Chen Licheng Sun | 2018 | Journal of Energy Chemistry2018，27，2： | 1 |
| 15 | Evolutionary computation in China: A literature survey显示文摘 | Maoguo Gong Shanfeng Wang Wenfeng Liu Jianan Yan Licheng Jiao | 2016 | CAAI Transactions on Intelligence Technology2016，1，4： | 1 |
| 16 | Study on the History, Current Situation and Countermeasures of Meteorological Theme Parks显示文摘From the establishment of first meteorological theme park-Xiamen Huwei Mountain Meteorological Theme Park in 2009 to the end of September,2019,11 meteorological theme parks have been built in China.There are 12 meteorological parks under construction and 10 shelved projects.China put forward the concept of meteorological theme park earlier in the world,and the construction of meteorological theme parks in China started from Xiamen Huwei Mountain Meteorological Park.The construction of meteorological theme parks in China has experienced the germination stage,initial stage,development stage and normative stage.Main construction experience contains:paying attention to top level design and overall planning,emphasizing leaders'attention and experts'participation,concerning multi-party linkage and coordination,and strengthening media momentum and extensive publicity.The main deficiencies are the lack of brand awareness,the diversity of names and weak folk identity.But seen from the perspective of development,the future prospect of meteorological theme park construction is very broad.In the future,the following countermeasures should be taken for the construction of meteorological theme parks in China:overall planning for approval,highlighting personality and characteristics,strengthening propaganda and grasping popularization of science,enhancing connotation and bringing benefits into play.It should combine meteorological science popularization with regional culture,use new media and other channels and ways to establish brand and expand influence,and build regional meteorological science popularization base. | Yan ZHANG Licheng LIU | 2020 | Meteorological and Environmental Research2020，11，4： | 0 |
| 17 | Investigation of energy-efficient heat pump assisted heterogeneous azeotropic distillation for separating of acetonitrile/ethyl acetate/n-hexane mixture显示文摘The conventional distillation is hard to accomplish the separation of acetonitrile/ethyl acetate/n-hexane mixture. Herein, a heterogeneous azeotropic distillation(HAD) without adding entrainer is proposed to separate ternary mixture. The proposed scheme is optimized via the simulated annealing algorithm and minimum total annual cost(TAC) is used as objective functions. To minimize energy consumption,heat pump is added on the basis of optimal heterogeneous azeotropic distillation and heat integration technology is used to further improve the energy recovery. The TAC, gas emission, energy consumption and exergy destruction are used to discuss the economy and environmental protection of processes.Among all the processes, the heat pump with higher preheating temperature(HPT) assisted HAD process by combining with heat integration(HAD-HPT-HI) has best performances on economic, environment,energy and exergy. Compared with conventional HAD process, the HAD-HPT-HI achieves the reductions of 52.17%, 68.86%, 65.87% and 65.46% on TAC, total energy consumption, gas emissions and exergy destruction, respectively. | Xinhao Li Qing Ye Jinlong Li Lingqiang Yan Xue Jian Licheng Xie Jianyu Zhang | 2023 | Chinese Journal of Chemical Engineering2023，55，3： | 0 |
| 18 | Background and Prospect of Meteorological Comment Writing显示文摘Meteorological comment is a kind of rational,thoughtful and knowledgeable argumentation form that communicators use mass media tools or carriers to directly express their own wishes on the newly occurred or discovered meteorological news facts,problems and phenomena.At present,the writing of meteorological comment has received special attention.Its deep background includes not only the international background of global attention to climate change,but also the domestic background of China’s proposed carbon peak and carbon neutralization targets,and more importantly,the scientific and technological background of the frequent occurrence of extreme meteorological disasters caused by climate change and its early warning and disaster reduction.The prospect of great importance attached to the writing of meteorological comments is that a new subject,namely the grammatology of meteorological comment,is bound to emerge,and the construction of the grammatology of meteorological comment has its own unique requirements. | Licheng LIU Hengxin TAN Yan ZHANG | 2022 | Meteorological and Environmental Research2022，13，5： | 0 |
| 19 | Surface passivation and hole extraction:Bifunctional interfacial engineering toward high-performance all-inorganic CsPbIBr2 perovskite solar cells with efficiency exceeding 12%显示文摘All-inorganic CsPbIBr2perovskite solar cells(PSCs)have attracted considerable research attention in recent years due to their excellent thermal stability.However,their power conversion efficiencies(PCEs)are relatively low and still far below the theoretical limit.Here,we report the use of an organic dye molecule(namely VG1-C8)as a bifunctional interlayer between perovskite and the hole-transport layer in CsPbIBr2PSCs.Combined experimental and theoretical calculation results disclose that the multiple Lewis base sites in VG1-C8 can effectively passivate the trap states on the perovskite films.Meanwhile,theπ-conjugated dye molecule significantly accelerates the hole extraction from the perovskite absorber as evidenced by the photoluminescence analysis.Consequently,the VG1-C8 treatment simultaneously boosts the photovoltage and photocurrent density values from 1.26 V and 10.80 mA cm^(-2) to 1.31 V and 12.44 m A cm^(-2),respectively.This leads to a significant enhancement of PCE from 9.20%to12.10%under one sun irradiation(AM 1.5G).To our knowledge,this is the record efficiency reported so far for CsPbIBr_(2) PSCs.Thus,the present work demonstrates an effective interfacial passivation strategy for the development of highly efficient PSCs. | Qi Liu Junming Qiu Xianchang Yan Yuemeng Fei Yue Qiang Qingyan Chang Yi Wei Xiaoliang Zhang Wenming Tian Shengye Jin Ze Yu Licheng Sun | 2022 | Journal of Energy Chemistry2022，31，11： | 0 |
| 20 | Adaptively Enhancing Facial Expression Crucial Regions via a Local Non-local Joint Network显示文摘Facial expression recognition(FER)is still challenging due to the small interclass discrepancy in facial expression data.In view of the significance of facial crucial regions for FER,many existing studies utilize the prior information from some annotated crucial points to improve the performance of FER.However,it is complicated and time-consuming to manually annotate facial crucial points,especially for vast wild expression images.Based on this,a local non-local joint network is proposed to adaptively enhance the facial crucial regions in feature learning of FER in this paper.In the proposed method,two parts are constructed based on facial local and non-local information,where an ensemble of multiple local networks is proposed to extract local features corresponding to multiple facial local regions and a non-local attention network is addressed to explore the significance of each local region.In particular,the attention weights obtained by the non-local network are fed into the local part to achieve interactive feedback between the facial global and local information.Interestingly,the non-local weights corresponding to local regions are gradually updated and higher weights are given to more crucial regions.Moreover,U-Net is employed to extract the integrated features of deep semantic information and low hierarchical detail information of expression images.Finally,experimental results illustrate that the proposed method achieves more competitive performance than several state-of-the-art methods on five benchmark datasets. | Guanghui Shi Shasha Mao Shuiping Gou Dandan Yan Licheng Jiao Lin Xiong | 2024 | Machine Intelligence Research2024，21，2： | 0 |
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