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Single-Crystalline In Ga As Nanowires for Room-Temperature High-Performance Near-Infrared Photodetectors

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Nano-Micro Letters 2016年第1期8卷 29-35页

作者： Huang Tan Chao fan Liang Ma Xuehong Zhang peng fan Yankun Yang Wei Hu Hong Zhou Xiujuan Zhuang Xiaoli Zhu Anlian Pan Key Laboratory for Micro-Nano Physics and Technology of Hunan Province School of Physics and Electronics and State Key Laboratory of Chemo/Biosensing and ChemometricsHunan University

In Ga As is an important bandgap-variable ternary semiconductor which has wide applications in electronics and optoelectronics. In this work, single-crystal In Ga As nanowires were synthesized by a chemical vapor deposition *** measurements indicate the In Ga As nanowires have strong light emission in near-infrared region. For the first time, photodetector based on as-grown In Ga As nanowires was also constructed. It shows good light response over a broad spectral range in infrared region with responsivity of 6.5×10~3 AW^(-1) and external quantum efficiency of 5.04×10~5%. This photodetector may have potential applications in integrated optoelectronic devices and systems.

关键词： InGaAs Nanowire Near-infrared Photodetector

Entanglement on Nucleation Barrier of Polymer Crystal

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Chinese Journal of Polymer Science 2022年第12期40卷 1640-1650,I0009页

作者： fan peng Cui Nie Ting-Yu Xu Jun-fang Sheng Wei Chen Wan-Cheng Yu Liang-Bin Li National Synchrotron Radiation Laboratory Anhui Provincial Engineering Laboratory of Advanced Functional Polymer FilmCAS Key Laboratory of Soft Matter ChemistryUniversity of Science and Technology of ChinaHefei 230026China

We propose a theoretical approach to quantitatively account for the role of entanglement in the nucleation of polymer melts, which is the unique feature of polymer differentiated from small molecules. By performing molecular dynamics simulations, we obtain the nucleation barriers of polymer systems with different entanglement densities, which exhibits an opposite trend compared to the prediction of the classic nucleation theory(CNT). To amend the deficiency of the CNT in polymer crystallization, we introduce the entanglement free energy to reflect the role of entanglement in polymer nucleation. Specifically, the polymer nucleation not only involves free energies of monomers inside and on the surface of a nucleus as considered in the CNT, but also affects the entanglement network around the nucleus. Our theoretical approach provides a reasonable interpretation for the unsolved nucleation phenomena of polymers in simulations and experiments.

关键词： Nucleation Entanglement Molecular simulation

Abdominoperineal excision following preoperative radiotherapy for rectal cancer: Unfavorable prognosis even with negative circumferential resection margin

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World Journal of Gastroenterology 2014年第27期20卷 9138-9145页

作者： Lin Wang Guo-Li Gu Zhong-Wu Li Yi-fan peng Jin Gu Department of Colorectal Surgery Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education)Peking University Cancer Hospital and Institute Department of General Surgery Air Force General Hospital Department of Pathology Department of GastroenterologyKey Laboratory of Carcinogenesis and Translational Research (Ministry of Education)Peking University Cancer Hospital and Institute

AIM: To evaluate whether an abdominoperineal excision (APE) is associated with increased local recurrence (LR) and shortened disease-free survival (DFS) in mid-low rectal cancer with a negative circumferential resecti... 详细信息

关键词： Abdominoperineal excision Preoperative radiotherapy Circumferential resection margin Survival

Solid-liquid solvent extraction of metal ions

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Journal of University of Science and Technology Beijing 2003年第3期10卷 1-7页

作者： Bo peng, Haiyan fan, and Jinzhang GaoDepartment of Chemistry, Northwest Normal University, Lanzhou 730070, China Department of Chemistry Northwest Normal University Lanzhou 730070 China

An overview of extraction of some trace metal ions using molten solvent (lowmelting substance) during last two decades is presented. The development of this technique since itsinception is briefly traced. The comparison of extraction efficiency, thermodynamics and kineticsmainly involving extraction of rare earth ions between molten solvent extraction at high temperatureand usual liquid-liquid extraction at room temperature are discussed in detail. The variousparameters obtained from the previous and present studies such as equilibrium extraction constantK_(ex), pH_(1/2), thermodynamic and kinetic data are displayed in tabular form. Finally, the currentdemands, disadvantages and future prospects are also evaluated.

关键词： solid-liquid solvent extraction metal ions thermodynamics kinetics determination

Living in forests:strata use by Indo-Chinese gray langurs(Trachypithecus crepusculus)and the effect of forest cover on Trachypithecus terrestriality

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Zoological Research 2020年第4期41卷 373-380页

作者： Chi Ma Wei-Guo Xiong Li Yang Lu Zhang Peter Robert Tomlin Wu Chen peng-Fei fan School of Life Sciences Sun Yat-Sen UniversityGuangzhouGuangdong 510275China Forestry Faculty South-west Forestry UniversityKunmingYunnan 650224China School of Sociology and Anthropology Sun Yat Sen UniversityGuangzhouGuangdong 510275China Guangzhou Zoo GuangzhouGuangdong 510070China Institute of Eastern-Himalaya Biodiversity Research Dali UniversityDaliYunnan 671003China

Studies on behavioral flexibility in response to habitat differences and degradation are crucial for developing conservation strategies for endangered *** species inhabit various habitats and display different patterns of strata use;however,the effect of habitat structure on strata use remains poorly ***,we investigated strata use patterns of Indo-Chinese gray langurs(Trachypithecus crepusculus)in a primary evergreen forest in ***,southwest China,from June2012 to January *** addition,we compared *** strata use and terrestriality with five other Trachypithecus species from previous *** langurs living in karst forests,our study group was typically arboreal and spent only 2.9%of time on the *** group showed a preference for higher strata when resting and lower strata(<20 m)when *** langurs primarily used time on the ground for geophagy,but otherwise avoided the ground during *** strata use patterns are similar to those of limestone langurs(***)when using continuous *** the genus level(n=6 species),we found a negative relationship between habitat forest cover and *** negative relationship was also true for the five limestone langur species,implying limestone langurs increase territoriality in response to decreased forest *** results document behavioral flexibility in strata use of Trachypithecus langurs and highlight the importance of the protection of continuous forests to promote langur conservation.

关键词： strata terrestrial limestone

Population size estimates based on GPS telemetry

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Zoological Research 2024年第1期45卷 36-38页

作者： Yu-Xuan fan Pu-Zheng Xie Chi Ma Ting Chen Xiao Ye Hua-Lin Xu Qiong Yang peng-Fei fan School of Life Sciences Sun Yat-sen UniversityGuangzhouGuangdong 510275China College of Agriculture and Biological Sciences DaliYunnan 671003China Neilingding-Futian National Nature Reserve of Guangdong ShenzhenGuangdong 518040China

DEAR EDITOR,Accurate estimation of population size is a crucial issue in wildlife population ecology and *** Global Positioning System(GPS)collars are well recognized as an effective method for monitoring wildlife behavior,their application in direct wildlife population size estimation remains *** this study,GPS telemetry was employed to survey a rhesus macaque(Macaca mulatta)population on Neilingding Island in Guangdong,*** May 2021 to April 2022,32 macaques across nine groups were fitted with GPS collars,producing a dataset of 109739 location *** data from all tracked individuals revealed the annual home ranges of the nine groups.

关键词： China Island size

A novel TGFBR2 gene mutation of type 2 Marfan syndrome in a Chinese family

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中国循环杂志 2018年第S1期33卷 124-125页

作者： Ying Zhang Lin Zhang peng fan Kunqi Yang Xianliang Zhou Department of Cardiology National Center for Cardiovascular DiseasesFuwai HospitalCAMS and PUMCBeijingChina

Objective To report the clinical features and the screening Results of the pathogenic gene in type 2 Marfan syndrome patients,and the relationship between the transmembrane domain of TGFBR2 gene and the clinical *** The FBN1 and TGFBR2 genes were sequenced in the genomic DNA by Sanger sequence of type 2 Marfan syndrome pedigrees,and the protein structure prediction and genotype phenotypic analysis of the TGFBR2 gene transmembrane domain termination mutation were carried out.

关键词： clinical features type 2 Marfan syndrome patients TGFBR2

Mg,Ti-base surface integrated layer and bulk doping to suppress lattice oxygen evolution of Ni-rich cathode material at a high cut-off voltage

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Journal of Energy Chemistry 2022年第8期31卷 434-444,I0012页

作者： fan peng Youqi Chu Yu Li Qichang Pan Guangchang Yang Lixuan Zhang Sijiang Hu Fenghua Zheng Hongqiang Wang Qingyu Li Guangxi Key Laboratory of Low Carbon Energy Materials School of Chemistry and Pharmaceutical SciencesGuangxi Normal UniversityGuilin 541004GuangxiChina Guangxi New Energy Ship Battery Engineering Technology Research Center Guangxi Normal UniversityGuilin 541004GuangxiChina

The Nickel-rich layered cathode materials charged to 4.5 V can obtain a specific capacity of more than 200 m Ah g^(-1).However,the nickel-rich layered cathode materials suffer from the severe capacity fade during high-voltage cycling,which is related to the phase transformation and the surface sides reactions caused by the lattice oxygen ***,the simultaneous construction of a Mg,Ti-based surface integrated layer and bulk doping through Mg,Ti surface treatment could suppress the lattice oxygen evolution of Nirich material at deep *** importantly,Mg and Ti are co-doped into the particles surface to form an Mg_(2)TiO_(4) and Mg_(0.5–x)Ti_(2–y)(PO_(4))_(3) outer layer with Mg and Ti *** the constructed surface integrated layer,the reverse electric field in the Mg_(2)TiO_(4) effectively suppressed the outward migration of the lattice oxygen anions,while Mg_(0.5–x)Ti_(2–y)(PO_(4))_(3) outer layer with high electronic conductivity and good lithium ion conductor could effectively maintained the stability of the reaction interface during highvoltage ***,bulk Mg and Ti co-doping can mitigate the migration of Ni ions in the bulk to keep the stability of transition metal–oxygen(M-O)bond at deep *** a result,the NCM@MTP cathode shows excellent long cycle stability at high-voltage charging,which keep high capacity retention of 89.3%and 84.3%at 1 C after 200 and 100 cycles under room and elevated temperature of 25 and 55°C,*** work provides new insights for manipulating the surface chemistry of electrode materials to suppress the lattice oxygen evolution at high charging voltage.

关键词： Ni-rich layered oxide Mg Ti-base surface integrated layer Bulk doping Lattice oxygen evolution

Synchronous colorectal and lung cancer:Report of three cases

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World Journal of Gastroenterology 2008年第6期14卷 969-973页

作者： Yi-fan peng Jin Gu Department of Colorectal Surgery School of Oncology Peking University Beijing Cancer Hospital Beijing 100036 China

The incidence of synchronous colorectal and lung cancer is relatively rare. We report three cases of patients with tumors located in the rectum, ascending colon, the lower lobe of the left lung, and the upper lobe of the right lung. Synchronous curative resection of the two lesions was performed in two patients, whereas colectomy was performed in an elderly patient with a poor lung function. Pathological examination showed the colorectal cancer was a moderately differentiated adenocarcinoma and the lung cancer was a squamous cell carcinoma. Surgical treatment and postoperative adjuvant chemotherapy for the lung cancer were different from those for colorectal cancer with pulmonary metastasis. If possible, radical resection should be performed for each cancer when synchronicity is found.

关键词： Multiple primary malignancies Adenocarcinoma Squamous cell carcinoma