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Achieving high efficiency and low voltage loss simultaneously for non-fullerene organic solar cells

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Science China Chemistry 2019年第4期62卷 405-406页

作者： Liwei Yang yanyan jia He Yan School of Civil Engineering Chang'an University Department of Chemistry The Hong Kong University of Science and Technology Clear Water Bay

Conventional organic solar cells are based on fullerene acceptors,which caused several drawbacks including poor absorption in visible and near IR regions,limited tunability of energy levels,and most importantly,large voltage loss from the optical bandgap of the cell to the open circuit voltage of the solar cell[1].During the past few years,nonfullerene OSCs have emerged as a promising alternative to fullerene devices,as their optical and electronic properties can be readily ***,it has been demonstrated in numerous cases that non-fullerene OSCs[2]can achieve small voltage loss of about 0.55 V,which is much improved compared to that of conventional *** such a small voltage loss is of paramount importance to OSCs,as it indicates the maximum achievable efficiency of OSCs can be increased to nearly 20%.

关键词： high efficiency low voltage loss solar cells

Taurine Transporter dEAAT2 is Required for Auditory Transduction in Drosophila

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Neuroscience Bulletin 2018年第6期34卷 939-950页

作者： Ying Sun yanyan jia Yifeng Guo Fangyi Chen Zhiqiang Yan State Key Laboratory of Medical Neurobiology Human Phenome InstituteMinistry of Education Key Laboratory of Contemporary AnthropologyCollaborative Innovation Center of Genetics and DevelopmentDepartment of Physiology and BiophysicsSchool of Life SciencesFudan UniversityShanghai 200438China Department of Human Anatomy School of Basic Medicine SciencesSouthwest Medical UniversityLuzhou 646000China Department of Biomedical Engineering Southern University of Science and TechnologyShenzhen 518055China

Drosophila dEAAT2, a member of the excitatory amino-acid transporter(EAAT) family, has been described as mediating the high-affinity transport of taurine, which is a free amino-acid abundant in both insects and mammals. However, the role of taurine and its transporter in hearing is not clear. Here, we report that dEAAT2 is required for the larval startle response to sound stimuli. d EAAT2 was found to be enriched in the distal region of chordotonal neurons where sound transduction occurs. The Ca2+imaging and electrophysiological results showed that disrupted dEAAT2 expression significantly reduced the response of chordotonal neurons to *** importantly, expressing d EAAT2 in the chordotonal neurons rescued these mutant phenotypes. Taken together,these findings indicate a critical role for Drosophila dEAAT2 in sound transduction by chordotonal neurons.

关键词： Drosophila dEAAT2 Taurine Chordotonal neurons Sound transduction

Corrosion Behavior of GH3535 Alloy Induced by Selenium

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Acta Metallurgica Sinica(English Letters) 2023年第6期36卷 1047-1056页

作者： Zhenyuan Zhu Fenfen Han yanyan jia Changying Wang Cuilan Ren Hanxun Qiu Xingtai Zhou University of Shanghai for Science and Technology Shanghai 200093China Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China Changzhou Institute of Technology Changzhou 213032China

Corrosion behavior of a Ni-16Mo-7Cr base superalloy was systematically investigated under a selenium(Se)atmosphere at 700°*** shows that Se can react with the alloy elements such as Ni,Mo,Cr et *** form a reaction layer at the surface of alloy,which is mainly composed of Ni_(2)Se_(3),MoSe_(2),and Cr_(3)Se_(4).The tensile properties of the alloy are not greatly affected by changes of Se *** slight decrease in the tensile strength is attributed to the formation of the reaction layer,which leads to the decrease in the effective undertaking area of the *** intergranular diffusion characteristic of Se elements was observed,and the Se effect of embrittlement on grain boundaries is weaker than that of tellurium(Te).

关键词： GH3535 alloy Selenium Fission product Intergranular embrittlement Molten salt reactor

Does China’s Financial System Amplify Risks in the Real Economy?

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China Finance and Economic Review 2021年第1期10卷 3-25页

作者： yanyan jia Yi Fang Zhongbo Jing Chinese Academy of Finance and Development of the Central University of Finance and Economics School of Finance of the Central University of Finance and Economics School of Management Science and Engineering of the Central University of Finance and Economics China

The smooth operation of the financial system can promote economic growth by absorbing risks,while the risks breaking out in the financial system will drag down economic development through risk spillovers and *** this basis,this paper uses secondary industry indices to build a risk spillover network between the real economy and the financial system,and discusses the risk absorption and amplification role of the financial system in China’s economy and finance from the perspective of ***,on the whole,the source of risks in China’s economic and financial system lies in the real *** financial system plays a role of risk absorption in China’s economic and financial system,demonstrating the professional risk management functions of the financial *** risk absorption of the financial system is positively correlated with the risks in the real economy,and negatively correlated with the risks in the financial ***,from the perspective of the correlation between the financial sub-industry and the real economy,the banking sector has the closest relationship with the real economy and the lowest risk absorption ***,from the perspective of the internal correlation of the financial system,the internal network correlation of the financial system is *** ed financial industry has stronger risk spillover effect on the banking industry and the insurance industry,while the insurance industry has stronger risk spillover effect on the banking *** results are essentially related to the functioning of the financial system,the internal relationship of the financial system and the relationship between the financial system and the real economy.

关键词： financial system real economy risk absorption risk amplification

Steering structural mesoporosity and working microenvironment of Fe-N-C catalysts for boosting cathodic mass transport of zinc-air batteries

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Science China Chemistry 2022年第8期65卷 1670-1678页

作者： Hang Shen yanyan jia Yanbin Qi Sheng Dai Hongliang jiang Yihua Zhu Chunzhong Li Shanghai Engineering Research Center of Hierarchical Nanomaterials School of Materials Science and EngineeringEast China University of Science and TechnologyShanghai 200237China Key Laboratory for Ultrafine Materials of Ministry of Education School of Chemical EngineeringEast China University of Science and TechnologyShanghai 200237China Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center Institute of Fine ChemicalsSchool of Chemistry&Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China

Transition metal-N-C materials have considerably been demonstrated as promising catalysts for cathodic oxygen reduction reaction(ORR)in Zn-air *** efforts mainly focus on tailoring coordination structure and identifying active sites of metal-N-C materials for ORR,while the mass transport of metal-N-C employed in catalytic layers of working electrodes is seldom ***,a Fe-N-C single-atom catalyst featuring high mesoporosity and abundant electrochemically accessible active sites is developed through post-loading Fe species into defective N-doped carbon *** Fe-N-C single-atom catalyst serving as the air cathode of Zn-air battery delivers a peak power density of 189.9 mW cm^(−2),significantly larger than 114.2 mW cm^(−2) of commercial Pt/C and 162.9 mW cm^(−2) of the Fe-N-C contrast catalyst with low *** importantly,through adding hydrophobic polytetrafluoroethylene(PTFE)nanoparticles in the catalytic layer of air cathode,the peak power density of Fe-N-C single-atom catalyst is further increased to 212.3 mW cm^(−2).The increased peak power density is attributed to the enhancement of O_(2) mass transport,as evidenced by a substantially decreased diffusion layer thickness that is obtained from electrochemical impedance spectroscopy.

关键词： electrocatalysis oxygen reduction reaction single-atom catalyst mass transport Zn-air batteries

A facile surfactant-free synthesis of Rh flower-like nanostructures constructed from ultrathin nanosheets and their enhanced catalytic properties

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Nano Research 2016年第3期9卷 849-856页

作者： Yaqi jiang Jingyun Su Yanan Yang yanyan jia Qiaoli Chen Zhaoxiong Xie Lansun Zheng State Key Laboratory of Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy Materials andDepartment of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China

Rh is an important catalyst that is widely used in a variety of organic reactions. In recent years, many efforts have focused on improving its catalytic efficiency by fabricating catalyst nanoparticles with controlled size and morphology. However, the frequently employed synthesis route using organic compounds either as the reaction medium or capping agent often results in residual molecules on the catalyst surface, which in turn drastically diminishes the catalytic performance. Herein, we report a facile, aqueous, surfactant-free synthesis of a novel Rh flower- like structure obtained via hydrothermal reduction of Rh（acac）3 by formaldehyde. The unique Rh nanoflowers were constructed from ultrathin nanosheets, whose basal surfaces comprised {111} facets with an average thickness of -1.1 nm. The specific surface area measured by CO stripping was 79.3 m2-g-1, which was much larger than that of commercial Rh black. More importantly, the Rh nanoflower catalyst exhibited excellent catalytic performance in the catalytic hydrogenation of phenol and cyclohexene, in contrast to the commercial Rh black and polyvinyl pyrrolidone （PVP）-capped Rh nanosheets exposed by similar {111} basal surfaces.

关键词： rhodium nanocrystal nanosheet hydrogenation reaction

Novel heterozygous USH1C mutation impacts hair cell mechanotransduction and causes progressive hearing loss

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Science Bulletin 2024年第2期69卷 167-172页

作者： yanyan jia Gaogan jia Luo Guo Nan Song Yu-Meng Wang Luoying jiang Yilai Shu Yan Chen Shujia Zhu Huawei Li Wenyan Li ENT Institute and Otorhinolaryngology Department of Eye&ENT Hospital State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain ScienceFudan UniversityShanghai 200031China Institutes of Biomedical Sciences Fudan UniversityShanghai 200032China NHC Key Laboratory of Hearing Medicine(Fudan University) Shanghai 200031China The Institutes of Brain Science and the Collaborative Innovation Center for Brain Science Fudan UniversityShanghai 200032China Shanghai Center for Brain Science and Brain-Inspired Intelligence Technology Shanghai 201210China Institute of Neuroscience State Key Laboratory of NeuroscienceCAS Center for Excellence in Brain Science and Intelligence TechnologyChinese Academy of SciencesShanghai 200031China Department of Cardiology and Institute for Developmental and Regenerative Cardiovascular MedicineXinhua Hospital Affiliated to Shanghai Jiaotong University School of MedicineShanghai 200092China

Hearing loss is one of the most common sensory disorders worldwide,affecting approximately 466 million people,including 34 million children[1].Genetic mutations accounts for approximately 60%of inherited hearing loss cases[2,3].These genetic changes result in a wide variety of clinical manifestations,ranging from nonsyndromic hearing loss(NSHL)to over 400 syndromes involving hearing loss and from mild adult-onset hearing loss to profound congenital deafness,covering the entire spectrum of Mendelian inheritance.

关键词： mec hearing approximate

Unraveling pharmaceuticals removal in a sulfur-driven autotrophic denitrification process:Performance,kinetics and mechanisms

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Chinese Chemical Letters 2023年第2期34卷 333-337页

作者： Jiying Huang Yujian Yan Yuyi Ou yanyan jia Lianpeng Sun Qing Zhao Hui Lu School of Environmental Science and Engineering Sun Yat-sen UniversityGuangzhou 510006China School of Ecology Sun Yat-sen UniversityGuangzhou 510006China Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology(Sun Yat-sen University) Guangzhou 510006China School of Civil Engineering Guangzhou UniversityGuangzhou 510006China

The removal of eight typical pharmaceuticals(Ph ACs)(i.e.,ibuprofen(IBU),ketoprofen(KET),diclofenac(DIC),sulfadiazine(SD),sulfamethoxazole(SMX),trimethoprim(TMP),ciprofloxacin(CIP)and enoxacin(ENO))in sulfur-driven autotrophic denitrification(Sd AD)process were firstly investigated via long-term operation of bioreactor coupled with batch *** results indicated that IBU and KET can be effectively removed(removal efficiency>50%)compared to other six Ph ACs in Sd AD *** was the primary removal route for IBU and KET with the specific biodegradation rates of 5.3±0.718.1±1.8μg g ^(-1)-VSS d ^(-1)at initial concentrations of 25-200μg/*** biotransformation intermediates of IBU and KET were examined,and the results indicated that IBU was biotransformed to three intermediates via hydroxylation and *** biotransformation could be initiated from the reduction of the keto group following with a series of oxidation/reduction reactions,and five intermediates of KET were observed in this *** microbial community composition in the system was markedly shifted when long-term exposure to Ph ***,the functional microbes(e.g.,genus Thiobacillus)showed high tolerance to Ph ACs,resulting in the high efficiency for Ph ACs,N and S removal during long-term Sd AD reactor *** findings provide better insight into Ph ACs removal in Sd AD process,especially IBU and KET,and open up an innovative opportunity for the treatment of Ph ACs-laden wastewater using sulfur-mediated biological process.

关键词： Pharmaceuticals(PhACs) Ibuprofen(IBU) Ketoprofen(KET) Biodegradation Sulfur-driven autotrophic denitrification process

High-quality Arabidopsis thaliana Genome Assembly with Nanopore and HiFi Long Reads

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Genomics, Proteomics & Bioinformatics 2022年第1期20卷 4-13页

作者： Bo Wang Xiaofei Yang yanyan jia Yu Xu Peng jia Ningxin Dang Songbo Wang Tun Xu Xixi Zhao Shenghan Gao Quanbin Dong Kai Ye MOE Key Laboratory for Intelligent Networks&Network Security Faculty of Electronic and Information EngineeringXi’an Jiaotong UniversityXi’an 710049China School of Computer Science and Technology Faculty of Electronic and Information EngineeringXi’an Jiaotong UniversityXi’an 710049China School of Life Science and Technology Xi’an Jiaotong UniversityXi’an 710049China School of Automation Science and Engineering Faculty of Electronic and Information EngineeringXi’an Jiaotong UniversityXi’an 710049China Genome Institute the First Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710061China

Arabidopsis thaliana is an important and long-established model species for plant molecular biology,genetics,epigenetics,and ***,the latest version of reference genome still contains a significant number of missing ***,we reported a high-quality and almost complete Col-0 genome assembly with two gaps(named Col-XJTU)by combining the Oxford Nanopore Technologies ultra-long reads,Pacific Biosciences high-fidelity long reads,and Hi-C *** total genome assembly size is 133,725,193 bp,introducing 14.6 Mb of novel sequences compared to the TAIR10.1 reference *** five chromosomes of the Col-XJTU assembly are highly accurate with consensus quality(QV)scores>60(ranging from 62 to 68),which are higher than those of the TAIR10.1 reference(ranging from 45 to 52).We completely resolved chromosome(Chr)3 and Chr5 in a telomere-to-telomere ***4 was completely resolved except the nucleolar organizing regions,which comprise long repetitive DNA *** Chrl centromere(CEN1),reportedly around 9 Mb in length,is particularly challenging to assemble due to the presence of tens of thousands of CEN180 satellite *** the cutting-edge sequencing data and novel computational approaches,we assembled a 3.8-Mb-long CEN1 and a 3.5-Mb-long *** also investigated the structure and epigenetics of *** clusters of CEN180 monomers were detected,and the centromere-specific histone H3-like protein(CENH3)exhibited a strong preference for CEN180 Cluster ***,we observed hypomethylation patterns in CENH3-enriched *** believe that this high-quality genome assembly,Col-XJTU,would serve as a valuable reference to better understand the global pattern of centromeric polymorphisms,as well as the genetic and epigenetic features in plants.

关键词： Centromere architecture CENH3 Bacterial artificial chromosome Telomere-to-telomere Model plant