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Higher taxa as surrogates of species richness of spiders in insect-resistant transgenic rice

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Insect Science 2012年第3期19卷 419-425页

作者： Sheng Lin Min-Sheng You Liette Vasseur Guang Yang feng-jing liu feng Guo Institute of Applied Ecology and Research Centre for Biodiversity and Eco-Safety Fujian Agriculture and Forestry University Fuzhou China Department of Biological Sciences Brock University St. Catharines Ontario Canada

Biodiversity assessments can often be time- and resource-consuming. Several alternative approaches have been proposed to reduce sampling efforts, including indicator taxa and surrogates. In this study, we examine the reliability of higher taxon surrogates to predict species richness in two experimental rice fields of Fujian Province, southeastern China during 2005 and 2009. Spider samples in transgenic and nontransgenie plots were collected using a suction sampler. Both the genus and family surrogates had significant and positive linear relationships with species richness in the transgenic and nontransgenic rice fields. The rice varieties did not significantly influence the linear relationships. Our findings suggest that higher-taxon surrogacy could be a useful alternative to complete species inventory for risk assessments of transgenic rice.

关键词： Araneae biodiversity surrogate ecological risk assessment higher-taxonsurrogacy rapid biodiversity assessment taxonomic resolution

Dual effects of disorder on the strongly-coupled system composed of a single quantum dot and a photonic crystal L3 cavity

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Science China(Physics,Mechanics & Astronomy) 2019年第6期62卷 27-36页

作者： GengYan Chen jing-feng liu Yi-Cong Yu RenMing liu GuiXin Zhu YongZhu Chen ZhanXu Chen Xue-Hua Wang School of Optoelectronic Engineering Guangdong Polytechnic Normal University College of Electronic Engineering South China Agricultural University School of Physics and Optoelectronic Engineering Foshan University State Key Laboratory of Optoelectronic Materials and Technologies School of Physics Sun Yat-sen University

Light-matter interaction in the strong coupling regime enables light control at the single-photon level. We develop numerical method and analytical expressions to calculate the decay kinetics of an initially excited two-level quantum emitter in dielectric nanostructure and single-mode cavity, respectively. We use these methods to discover the dual effects of disorder on the stronglycoupled system composed of a single quantum dot and a photonic crystal L3 cavity. The quality factor is sensitive to disorder,while the g factor and vacuum Rabi splitting are robust against disorder. A small amount of disorder may either decrease or increase the light localization and the light-matter interaction. Our methods offer flexible and efficient theoretical tools for the investigation of light-matter interaction, especially cavity quantum electrodynamics. Our findings significantly lower the requirements for optimization effort and fabrication precision and open up many promising practical possibilities.

关键词： cavity quantum electrodynamics light-matter interaction photonic crystal

Organic white-light sources:Multiscale construction of organic luminescent materials from molecular to macroscopic level

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Science China Chemistry 2022年第4期65卷 740-745页

作者： Song Chen Xue-Dong Wang Ming-Peng Zhuo Qiang Lv jing-feng liu Liang-Sheng Liao Jiangsu Key Laboratory for Carbon-Based Functional Materials&Devices Institute of Functional Nano&Soft Materials(FUNSOM)Soochow UniversitySuzhou 215123China Macao Institute of Materials Science and Engineering Macao University of Science and TechnologyTaipa 999078China

Organic luminescent materials play an integral role in the optoelectronic applications of displays and solid-state ***, high-performance organic luminescent materials require the efficient combination of two or more kinds of materials, which is extremely difficult owing to the completely different self-assembly behaviors of multicomponent ***, based on a broad scale from the molecular, micro-/nano-scale, and macroscopic levels, we successfully demonstrate the multiscale construction of organic luminescent microwires of cocrystals, solid solutions, and core-shell microstructures. Through the wide selection of electron donor/acceptor pairs, a series of color-tunable charge-transfer(CT) cocrystals are formed via the intermolecular cooperative self-assembly process. On this basis, the high structural compatibility and perfect lattice mismatching(~1.1%) of cocrystals are critical factors that facilitate the combination of dissimilar materials to form solid solutions and core/shell microwires. Significantly, because of the full-spectrum light transport from 400 to 800 nm, the nano-micro-scaled solid solution microwires act as microscale white-light sources [CIE(0.32, 0.36)]. Meanwhile, the macroscopic-scale core/shell organic-microwires demonstrate tunable white-light emission with a high color-rendering index(CRI) of 83, whose CIE coordinates span from(0.37, 0.39) to(0.40, 0.31). Therefore, our work provides a feasible approach to the multiscale synthesis of novel luminescent organic semiconductor materials, which could lay a solid foundation for organic optoelectronics.

关键词： noncovalent interaction multiscale self-assembly core/shell solid solution white-light emission

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The effect of adjuvant transarterial chemoembolization for hepatocellular carcinoma after liver resection based on risk stratification

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Hepatobiliary & Pancreatic Diseases International 2023年第5期22卷 482-489页

作者： Jin-Shu Zeng Jian-Xing Zeng Yao Huang jing-feng liu Jin-Hua Zeng Department of Ultrasonic Medical The First Affiliated Hospital of Fujian Medical UniversityFuzhou 350005China The Liver Center of Fujian Province Fujian Medical UniversityFuzhou 350025China Department of Hepatobiliary Surgery The First Affiliated Hospital of Fujian Medical UniversityFuzhou 350005China Department of Hepatobiliary Surgery Mengchao Hepatobiliary Hospital of Fujian Medical UniversityFuzhou 350005China

Background:There is currently no standard adjuvant treatment proven to prevent hepatocellular carcinoma(HCC)*** studies suggest that postoperative adjuvant transarterial chemoembolization(PA-TACE)is beneficial for patients at high risk of tumor ***,it is difficult to select the *** present study aimed to develop an easy-to-use score to identify these ***:A total of 4530 patients undergoing liver resection were *** risk factors were identified by Cox regression model in the training cohort and the Primary liver cancer big data transarterial chemoembolization(PDTE)scoring system was ***:The scoring system was composed of ten risk factors including alpha-fetoprotein(AFP),albuminbilirubin(ALBI)grade,operative bleeding loss,resection margin,tumor capsular,satellite nodules,tumor size and number,and microvascular and macrovascular *** 5 points as risk stratification,the patients with PA-TACE had higher recurrence-free survival(RFS)compared with non-TACE in>5 points group(P5 points may benefit from PA-TACE.

关键词： Hepatocellular carcinoma Liver resection Adjuvant transarterial chemoembolization Scoring system Risk stratification

Thickness-dependent highly sensitive photodetection behavior of lead-free all-inorganic CsSnBr_(3) nanoplates

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Rare Metals 2022年第5期41卷 1753-1760页

作者： Dong liu Yan-Xue Yin feng-jing liu Cheng-Cheng Miao Xin-Ming Zhuang Zhi-Yong Pang Ming-Sheng Xu Ming Chen Zai-Xing Yang School of Physics State Key Laboratory of Crystal MaterialsSchool of MicroelectronicsShandong UniversityJinan 250100China

Non-layered two-dimensional(2D) lead-free all-inorganic perovskites nanoplates have recently attracted considerable attention in photodetectors;however, the indepth investigation of thickness on photodetection performance is still lacking. In this work, by constructing the famous metal-semiconductor-metal photodetectors, the photodetection behaviors of thickness-controlled CsSnBr;nanoplates are investigated systematically. Ni electrodes are adopted for ensuring the good ohmic contact behaviors of as-fabricated photodetectors. With the increase in thickness, the photodetection performances improve accordingly, such as photocurrent increases from 0.22 to 19.40 nA, responsivity increases from 72.9 to 4893.7 mA·W^(-1), rise/decay time decreases from 11/35 to 3/10 ms, respectively. Notability, the dark current also increases with the increase in thickness, making the further investigation on the reduction in dark current *** of the as-fabricated photodetectors are stable, suggesting the careful thickness selection in next-generation high-performance lead-free all-inorganic perovskites photodetectors.

关键词： Thickness Photodetection Lead-free all-inorganic perovskites Non-layered two-dimensional perovskites CsSnBr3 nanoplates

In-situ measurement on air-water flux of CH_(4),CO_(2) and their carbon stable isotope in lakes of northeast Tibetan Plateau

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Advances in Climate Change Research 2022年第2期13卷 279-289页

作者： Lei WANG Cun-De XIAO Zhi-Heng DU Damien T.MAHER jing-feng liu Zhi-Qiang WEI State Key Laboratory of Earth Surface Processes and Resource Ecology Beijing Normal UniversityBeijing 100875China State Key Laboratory of Cryospheric Science Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China Southern Cross Geoscience Southern Cross UniversityLismoreNSW 2480Australia College of Geography and Environmental Science Northwest Normal UniversityLanzhou 730070China Zhuhai Branch of State Key Laboratory of Earth Surface Process and Resource Ecology Beijing Normal UniversityZhuhai 519087China

Inland waters are important sources of greenhouse gases(GHGs)to the atmosphere that may partially offset the terrestrial carbon ***,GHG emissions from high altitude saline lakes on the Tibetan Plateau are currently poorly *** this study,we measured methane(CH_(4))and carbon dioxide(CO_(2))concentrations and their carbon stable isotope(δ13C),and calculated diffusive water-to-air fluxes from two saline high-altitude lakes,Qinghai Lake and Hala Lake,located in northeast Tibetan Plateau in October *** two lakes were mostly supersaturated in CH_(4)(89.8%-4623.9%sat)and acted as sources of CH_(4) to the ***,more than 96%investigated area of Qinghai Lake and all investigated area of Hala Lake was a sink of CO_(2).The average diffusive fluxes of CH_(4) and CO_(2) in the surface waters of Qinghai Lake were 34.51μmol m−2 d−1 and−1.29 mmol m−2 d−1,while diffusive fluxes of CH_(4) and CO_(2) in Hala Lake averaged 5.48μmol m−2 d−1 and−5.24 mmol m−2 d−1,***(Sal),fluorescent dissolved organic matter(fDOM),temperature(Temp)and dissolved oxygen(DO)are key factors for diffusive CH_(4) and CO_(2) flux in Qinghai Lake and Hala ***_(4) diffusive fluxes across water-air interface from Qinghai Lake and Hala Lake were found to be significantly lower than other freshwater lakes,likely due to their saline nature.A simple isotope mixing model(Miller-Tans plots)revealed a distinctly different isotopic source values of CO_(2) and CH_(4) in Qinghai Lake and Hala *** CH_(4) production pathway of Qinghai Lake was mainly by the acetate fermentation,while that of Hala Lake was mainly by the CO_(2) *** results show that the continuous measurement can help capture the spatial variability of GHGs fluxes in saline lakes.

关键词： Greenhouse gas Air-water flux Carbon stable isotope Tibetan Plateau Saline lakes

High-performance omnidirectional self-powered photodetector constructed by CsSnBr_(3)/ITO heterostructure film

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Journal of Electronic Science and Technology 2023年第2期21卷 78-86页

作者： Dong liu feng-jing liu Jie Zhang Zi-Xu Sa Ming-Xu Wang Sen Po Yip Jun-Chen Wan Peng-Sheng Li Zai-Xing Yang School of Physics School of MicroelectronicsState Key Laboratory of Crystal MaterialsShandong UniversityJinan250100China Institute for Materials Chemistry and Engineering Kyushu UniversityFukuoka816-8580Japan

Omnidirectional photodetectors attract enormous attention due to their prominent roles in optical tracking systems and omnidirectional ***,it is still a challenge for the construction of high-performance omnidirectional photodetectors where the incident light can be effectively absorbed in multiple directions and the photo-generated carriers can be effectively ***,a high-performance omnidirectional self-powered photodetector based on the CsSnBr_(3)/indium tin oxide(ITO)heterostructure film was designed and *** as-fabricated photodetector exhibited an excellent self-powered photodetection performance,showing responsivity and detectivity up to 35.1 mA/W and 1.82×10^(10) Jones,respectively,along with the smart rise/decay response time of 4 ms/9 *** from the excellent photoelectric properties of the CsSnBr_(3) film as well as the ability of the CsSnBr_(3)/ITO heterostructure to efficiently separate and collect photo-generated carriers,the as-fabricated photodetector also exhibited an excellent omnidirectional self-powered photodetection *** the results have certified that this work finds an efficient way to realize high-performance omnidirectional self-powered photodetectors.

关键词： Chemical vapor deposition CsSnBr_(3)/ITO heterostructure film Omnidirectional Self-powered photodetector

Seamless maps of major elements of the Moon:Results from high-resolution geostationary satellite

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Research in Astronomy and Astrophysics 2021年第2期21卷 52-60页

作者： Yu Lu Yun-Zhao Wu Cui Li Jin-Song Ma Wen-Wen Qi Wei Tan Xiao-Man Li Zhi-Cheng Shi Hong-Yan He Shu-Wu Dai Guo Li feng-jing liu jing-Qiao Wang Xiao-Yan Wang Qi Wang Ling-Jie Meng Key Laboratory of Planetary Sciences Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210034China School of Astronomy and Space Science University of Science and Technology of ChinaHefei 230026China CAS Center for Excellence in Comparative Planetology Hefei 230026China Space Science Institute Macao University of Science and TechnologyMacaoChina School of Geography and Ocean Science Nanjing UniversityNanjing 210023China Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application Nanjing 210023China Beijing Institute of Space Mechanics and Electricity Beijing 100076China Beijing Institute of Spacecraft System Engineering Beijing 100076China China Centre for Resources Satellite Data and Application Beijing 100094China Earth Observation System and Data Center China National Space AdministrationBeijing 100010China

Major elements such as Fe,Ti,Mg,Al,Ca and Si play very important roles in understanding the origin and evolution of the *** maps of these major elements derived from orbital data are based on mosaic images or low-resolution gamma-ray *** hue variations and gaps among orbital boundaries in the mosaic images are not conducive to geological *** paper aims to produce seamless and homogenous distribution maps of major elements using the single-exposure image of the whole lunar disk obtained by China’s high-resolution geostationary satellite,Gaofen-4,with a spatial resolution of500 *** elemental contents of soil samples returned by Apollo and Luna missions are regarded as ground truth,and are correlated with the reflectance of the sampling sites extracted from Gaofen-4 *** final distribution maps of these major oxides are generated with the statistical regression *** these products,the average contents and proportions of the major elements for maria and highlands were estimated and *** results showed that Si O2 and Ti O2 have the highest and lowest fractions in mare and highland areas,***,the relative concentrations of these elements could serve as indicators of geologic processes,e.g.,the obviously asymmetric distributions of Al2 O3,Ca O and Si O2 around Tycho crater may suggest that Tycho crater was formed by an oblique impact from the southwest direction.

关键词： Moon-Data analysis-Imaging spectroscopy

CH_(4) and C0_(2) observations from a melting high mountain glacier,Laohugou Glacier No.12

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Advances in Climate Change Research 2022年第1期13卷 146-155页

作者： Zhi-Heng DU Lei WANG Zhi-Qiang WEI jing-feng liu Peng-Lin LIN Jia-Hui LIN Yan-Zhao LI Zi-Zhen JIN Ji-Zu CHEN Xiao-Xiang WANG Xiang QIN Cun-De XIAO State Key Laboratory of Cryospheric Science Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China State Key Laboratory of Earth Surface Processes and Resource Ecology Beijing Normal UniversityBeijing 100875China Zhuhai Branch of State Key Laboratory of Earth Surface Processes and Resource Ecology Beijing Normal UniversityZhuhai 519087China College of Geography and Environment Science Northwest Normal UniversityLanzhou 730000China Qilian Shan Station of Glaciology and Ecological Environment State Key Laboratory of Cry ospheric ScienceNorthwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China

With global warming,glaciers in the high mountains of China are retreating ***,few data have been reported on whether greenhouse gases from these glaciers are released into the atmosphere or absorbed by glacial *** this study,we collected meltwater and ice samples from Laohugou Glacier No.12 in western China and measured CH_(4)and CO_(2)*** from the glacier terminus was continually sampled between 3 and 5 August 2020 to measure CH_(4)and CO_(2)*** results demonstrated that meltwater is a source of CH_(4)because the average saturations are over 100%.It could be con eluded that CH_(4)in the atmosphere can be released by glacial ***,the CO_(2)saturations are various,and CO_(2)fluxes exhibit positive(released CO_(2))or negative(absorbed CO_(2))values because the water and atmospheric conditions are *** importantly,the CH_(4)and CO_(2)concentrations were higher in meltwater samples from the glacier terminus than in samples from the surface ice(including an ice core)and a surface *** the meltwater effect from the upper part of the glacier cannot be excluded,we speculated that subglacial drainage systems with an anaerobic environment may represent the CH_(4)source,but it needs to be further investigated in the ***,high mountain glaciers are currently ignored in global carbon budgets,and the increased melting of glaciers with global warming may accelerate the absorption of much more CO_(2)and lead to the release of CH_(4).

关键词： CO_(2) CH_(4) Source and sink:Subglacial drainage systems Laohugou glacier No.12