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Jurassic granitoid dike in Luodian, Guizhou Province: discovery and geological significance

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Acta Geochimica 2019年第1期38卷 159-172页

作者： Mingjin Zhu Aiguo Nie Yazhou tian Xinsong Wang Jun Sun Guizhou University Guizhou Institute of Technology State Key Laboratory of Ore Deposit Geochemistry Institute of Geochemistry Chinese Academy of Sciences

In this paper, the Jurassic granitoid dike that intrudes into Permian diabase was reported in Luokun,Luodian County, south Guizhou. Zircon LA-ICP-MS U–Pb dating of the granitoid dike yielded an age of 164.3 ± 2.4 Ma with the e Hf(t) range from + 7.8 to + 12.1. The high contents of SiO_2(65.2%–66.8%) and total alkali(Na_2O + K_2O: 9.01%–9.95%), and low contents of Mg, Fe, Ca, P and Ti show the characteristics of alkali-rich granite. The total contents of rare earth elements range from 289.90 to 394.23 ppm. The Rb, Ba, K, Th, U and other LILE, Ta, Sr, P, Ti are enriched, and heavy rare earth elements are depleted. Petrogeochemical characteristics show that the dike was derived from a partial melting of newly-grown basaltic crust, and contaminated by crustal materials before experiencing strong fractional crystallization. The dike was formed in the intraplate post-orogenic extension stage and indicates that parental magma rose to the shallow crust through a fault. This provides new evidence of tectonic and mantle-crust magmatic activities and may contribute to regional Au mineralization in southern Guizhou and neighboring areas.

关键词： Jurassic granitoid dike Geochemical characteristics Geochronology Luodian Guizhou province

Erectile dysfunction in nonmuscle-invasive bladder cancer patients before and after transurethral resection(TUR)of bladder tumor in China

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Asian Journal of Andrology 2022年第5期24卷 509-512页

作者： Peng Guo Yu Wang Yun-Feng Xie tian-Bing Lv Department of Urology Neijiang First People’s HospitalNeijiang 641000China Department of Pathology Neijiang First People’s HospitalNeijiang 641000China

The aim of this study was to investigate the incidence of erectile dysfunction(ED)in nonmuscle-invasive bladder cancer(NMIBC)patients before and after transurethral resection(TUR)in *** data from 165 male patients with NMIBC who received adjuvant intravesical chemotherapy after TUR in Neijiang First People’s Hospital(Neijiang,China)between January 2010 and June 2019 were retrospectively *** sexual function of these patients was evaluated before and 1.5 years after initial TUR by the International Index of Erectile Function-5(IIEF-5).An age-specific subanalysis was performed among the patients:<45 years old(Group 1,n=19)and≥45 years old(Group 2,n=146).Before and 1.5 years after TUR,the incidence rates of ED in Group 1 were 15.8%and 52.6%,and those in Group 2 were 54.1%and 61.0%,*** difference between groups was statistically significant at the preoperative stage(15.8%vs 54.1%,P=0.002)but not at the postoperative stage(52.6%vs 61.0%,P=0.562).Compared with the preoperative stage,the incidence of ED at the postoperative stage was increased significantly in Group 1(15.8%vs 52.6%,P=0.017)but not in Group 2(54.1%vs 61.0%,P=0.345).In conclusion,the incidence of ED increased in male NMIBC patients under the age of 45 years after TUR in *** patients should be offered professional counseling during the follow-up period.

关键词： erectile dysfunction male sexual dysfunction nonmuscle-invasive bladder cancer transurethral resection

Calcium-organic frameworks cathode for high-stable aqueous Zn/organic batteries

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Chinese Chemical Letters 2023年第7期34卷 289-293页

作者： Wenshan Gou tian Jiang Wei Wang Qi Fan Yan Zhang Institute of Advanced Cross-field Science College of Life SciencesQingdao UniversityQingdao 200671China School of Materials Science and Engineering Jiulonghu CampusSoutheast UniversityNanjing 211189China China State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 210009China

Rechargeable aqueous zinc-ion batteries(AZIBs) are attracting tremendous attention because of their intrinsic merits such as high safety and low cost. Cathode plays a critical role in enhancing the electrochemical performance of AZIBs. However, it is difficult to design a robust and high-efficiency cathode material and further implement the commercialization of AZIBs. Metal-organic frameworks(MOFs) electroactive compounds are attractive to serve as the cathode of AZIBs due to their unique porosity and crystal structures, resource renewability and structural diversity. In this work, a calcium-pure terephthalates acid framework(Ca-PTA·3H_(2)O) was synthesized by facile hydrolysis and cationic exchange method,then explored as a novel cathode for AZIBs. The results highlight a high specific capacity of 431 mAh/g(0.51 mAh/cm^(2)) at a current density of 50 mA/g, and excellent cycle performance with capacity retention of ~90% after 2700 cycles at 500 m A/g. The following up characterizations investigate the reversible zinc storage mechanism in detail. This experiment made a specific contribution to the exploration of the new MOF as a competitive cathode for AZIBs.

关键词： Aqueous zinc-ion battery Metal-organic frameworks Cathode material Excellent cycle performance Zinc storage mechanism

Self-powered bifunctional perovskite photodetectors with both broadband and narrowband photoresponse

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InfoMat 2022年第11期4卷 119-131页

作者： Wenjie Cheng Wei tian Fengren Cao Liang Li School of Physical Science and Technology Jiangsu Key Laboratory of Thin FilmsSoochow UniversitySuzhouPeople's Republic of China

Photodetectors generally operate exclusively in either the broadband or *** bifunctional photodetectors that can detect photons in both broadband and narrowband would bring significant versatility to the optoelectronic ***,the design of bifunctional integrated devices remains challenging due to the differentiated strategies with respect to device structure and material ***,we propose introducing polyvinylpyrrolidone to increase the viscosity of the perovskite precursor solution,which introduces abundant defects and cavities into the perovskite film while maintaining a relatively low film ***,we use methylamine gas to postprocess the middle area of the film to promote directional recrystallization and densification,thereby realizing narrowband and broadband dualfunction photodetection in a single device at zero *** ends of the film exhibit a near-infrared peak response at 780 nm with a narrow full-width at half maximum of approximately 30 nm without an external *** middle broadband photodetector exhibits a high responsivity of 329 mA W^(-1)and EQE up to 52.46%at 780 *** make full use of narrow-band wavelength selective detection and broadband full-spectrum detection to achieve double encryption during signal *** work represents an important step toward the realization of perovskite-based multifunctional integrated devices.

关键词： bifunctional device double encryption narrow FWHM perovskite photodetector

Recent advances in molecular and nanoparticle probes for fluorescent bioanalysis

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Nano Research 2024年第7期17卷 6443-6474页

作者： Haowen Luo Lejie tian Yaoming Zhang Yang Wu Bin Li Jianxi Liu State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Yantai zhongke Research Institute of Advanced Materials and Green Chemical Engineering Shandong Laboratory of Advanced Materials and Green ManufacturingYantai 264006China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China

With the increasing emphasis on ecological safety and physical health,the detection and treatment of harmful substances and diseases are becoming more and more ***,efficiently monitoring these biological behaviors with high accuracy and sensitivity in real-time has shown prominent research *** use of fluorescent probes to analyze organisms has gained momentum in recent years,especially in the field of organ imaging and assisted cancer therapy,where fluorescent bioanalysis demonstrates significant *** this review,we explored the latest advancements in fluorescent molecular probes(e.g.,small-molecule,macro-molecule,supramolecule)and fluorescent nanoparticle probes(e.g.,quantum dots or nanoclusters,metal-organic frameworks,polymers,complexes)used as bioanalytical tools in various assays over the last three *** also delved into their detective mechanisms,specific application areas,and characterization tools for responsive *** review aims to showcase the most recent and comprehensive research progress in fluorescent bioanalysis based on molecular and nanoparticle probes,offering guidance for future developments in the design and fabrication of fluorescent probes and their potential applications.

关键词： fluorescent biosensing bioimaging disease diagnosis tumor detection and treatment

Self-doping active sites in microbe-derived carbonaceous electrocatalysts for the oxygen reduction reaction performance

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Nano Research 2024年第8期17卷 6803-6819页

作者： Xiaofeng Xiao Xiaochun tian Junpeng Li Fan Yang Rui Bai Feng Zhao Key Laboratory of Urban Pollutant Conversion Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China University of Chinese Academy of Sciences Beijing 100049China

Microorganisms are rich in heteroatoms,which can be self-doped to form active sites during pyrolysis and loaded on microbederived carbonaceous *** recent years,microbe-derived carbonaceous materials,characterized with abundant selfdoping sites,have been continuously developed as cost-effective electrocatalysts for oxygen reduction reaction(ORR).To fully unlock the catalytic potential of microbe-derived carbonaceous materials,a comprehensive analysis of catalytic sites and mechanisms for ORR is *** paper provides a summary of the ORR catalytic performance of microbe-derived carbonaceous materials reported to date,with a specific focus on the self-doping sites introduced during their pyrolytic *** highlights the mono-or co-doping sites involving nonmetallic elements such as oxygen(O),nitrogen(N),phosphorus(P),and sulfur(S)atoms,as well as covers the doping of metallic iron(Fe)atoms with various coordination configurations in microbe-derived carbonaceous *** the impact of these self-doping sites on ORR catalytic performance can guide the design of doping sites in microbe-derived carbonaceous *** approach has the potential to maximize electrocatalytic activity of microbe-derived carbonaceous materials and contributes to the development of more efficient and cost-effective carbonaceous electrocatalysts.

关键词： electrocatalysis heteroatoms self-doped single atom catalyst microbe-derived carbonaceous material

Anticipatory activity in rat medial prefrontal cortex during a working memory task

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Neuroscience Bulletin 2012年第6期28卷 693-703页

作者： Wenwen Bai Tiaotiao Liu Hu Yi Shuangyan Li Xin tian School of Biomedical Engineering Tianjin Medical University Laboratory of Neuroengineering Research Center of Basic MedicineTianjin Medical University

Objective Working memory is a key cognitive function in which the prefrontal cortex plays a crucial role. This study aimed to show the firing patterns of a neuronal population in the prefrontal cortex of the rat in a working memory task and to explore how a neuronal ensemble encodes a working memory event. Methods Sprague-dawley rats were trained in a Y-maze until they reached an 80% correct rate in a working memory task. Then a 16-channel microelectrode array was implanted in the prefrontal cortex. After recovery, neuronal population activity was recorded during the task, using the Cerebus data-acquisition system. Spatio-temporal trains of action potentials were obtained from the original neuronal population signals. Results During the Y-maze working memory task, some neurons showed significantly in- creased firing rates and evident neuronal ensemble activity. Moreover, the anticipatory activity was associated with the delayed alternate choice of the upcoming movement. In correct trials, the averaged pre-event firing rate （10.86 ± 1.82 spikes/ bin） was higher than the post-event rate （8.17 ± 1.15 spikes/bin）（P 〈0.05）. However, in incorrect trials, the rates did not differ. Conclusion The results indicate that the anticipatory activity of a neuronal ensemble in the prefrontal cortex may play a role in encoding working memory events.

关键词： anticipatory activity working memory rat medial prefrontal cortex neuronal ensemble

A review on application of composite truss bridges composed of hollow structural section members

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Journal of Traffic and Transportation Engineering(English Edition) 2019年第1期6卷 94-108页

作者： Zhijuan tian Yongjian Liu Lei Jiang Weiqing Zhu Yinping Ma School of Highway Chang'an University Department of Civil Engineering Queen's University

Composite truss with hollow structural section(HSS) members is deemed as the structure applicable to large-span and heavily-loaded bridges. To promote the application of composite truss bridge with HSS members in China, this paper described its structural characteristics and technology in details. Besides, not only were 32 typical design cases of composite truss bridges with HSS members collected, but also the corresponding historical development was summed up. Comparisons on structural components, characteristics and engineering applications were made among composite truss bridges with HSS members in different structural forms. Then, the analysis on the characteristics of composite truss bridges with concrete-filled steel tubular(CFST) chords was conducted, and the challenges on the aspects of complicated joints and interfacial debonding were pointed out. To address these problems, the concrete-filled rectangular hollow section(CFRHS)stiffened with PBLs(Perfobond Ribs) was proposed to improve the reliability of confinement effect in CFST member and force transfer in joints. The advantages on the mechanical properties of CFRHS structure stiffened using PBLs were systematically expounded with respect to the behaviors of steel plate, interface, member and joint. Moreover, the structure design, construction technology, structural calculation and economic efficiency of the practical bridge with CFRHS chords stiffened using PBLs were comprehensively *** results demonstrated that composite truss bridge with PBL-stiffened CFRHS members was competitive in mechanical performance and construction.

关键词： Composite truss bridge Rectangular hollow section Concrete-filled Perfobond rib

Decomposition analysis of CO_(2) emissions of electricity and carbon-reduction policy implication: a study of a province in China based on the logarithmic mean Divisia index method

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Clean Energy 2023年第2期7卷 340-349页

作者： Fuyuan Yang Xiaobin Yang Xueqin tian Xinlei Wang Tong Xu State Grid Economic and Technological Research Institute Co. LtdBeijing102209China State Grid Jiangxi Electric Power Research Institute State Grid Jiangxi Electric Power Co.LtdNanchangChina

As the proportion of electricity in final energy consumption gradually increases,CO_(2) emissions reduction actions in the power system will become the key to achieving China’s carbon-peak and carbon-neutrality *** is essential to analyse and quantify the driving forces of CO_(2) emissions from electricity generation in the fossil-rich area in *** paper aims to identify the characteristics of CO_(2) emissions generated by electricity and provide a basis for formulating CO_(2)-reduction policies in power ***,we analyse the current state of CO_(2) emissions from electricity generation in Anhui Province that was dominated by fossil energy during the period ***,we apply the logarithmic mean Divisia index method to find the nature of the factors influencing the changes in CO_(2) ***,we analyse the CO_(2)-reduction measures of each side of the source-network-load-storage of the power system in Anhui through a power-system carbon-reduction path analysis model proposed in this study and provide policy *** results showed the following.(i)CO_(2) emissions in Anhui Province continued to increase from 2010 to 2019 and the trend in the growth rate of CO_(2) emissions presented approximately a u-shaped curve.(ii)Economic activity has always been the dominant factor driving the growth of electricity CO_(2) *** increase in the proportion of renewable energy in power generation,the improvement in thermal power-conversion efficiency and the decrease in the intensity of power consumption are the three major driving factors for the reduction in CO_(2) emissions from power generation in Anhui.(iii)The CO_(2)-reduction measures of the power system are provided in each link of the source-network-load-storage,such as developing the photovoltaic industry and building energy storage,upgrading and transforming coal-fired power stations,redu-cing the loss rate of transmission lines on the grid side and improving the efficiency

关键词： CO_(2)emissions LMDI electricity generation carbon-reduction measures