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| 1 | Photoinduced large polaron transport and dynamics in organic-inorganic hybrid lead halide perovskite with terahertz probes显示文摘Organic-inorganic hybrid metal halide perovskites(MHPs)have attracted tremendous attention for optoelectronic applications.The long photocarrier lifetime and moderate carrier mobility have been proposed as results of the large polaron formation in MHPs.However,it is challenging to measure the effective mass and carrier scattering parameters of the photogenerated large polarons in the ultrafast carrier recombination dynamics.Here,we show,in a one-step spectroscopic method,that the optical-pump and terahertz-electromagnetic probe(OPTP)technique allows us to access the nature of interplay of photoexcited unbound charge carriers and optical phonons in polycrystalline CH_(3)NH_(3)PbI_(3)(MAPbI_(3))of about 10μm grain size.Firstly,we demonstrate a direct spectral evidence of the large polarons in polycrystalline MAPbI_(3).Using the Drude-Smith-Lorentz model along with the Frӧhlich-type electron-phonon(e-ph)coupling,we determine the effective mass and scattering parameters of photogenerated polaronic carriers.We discover that the resulting moderate polaronic carrier mobility is mainly influenced by the enhanced carrier scattering,rather than the polaron mass enhancement.While,the formation of large polarons in MAPbI_(3)polycrystalline grains results in a long charge carrier lifetime at room temperature.Our results provide crucial information about the photo-physics of MAPbI3 and are indispensable for optoelectronic device development with better performance. | Zuanming Jin Yan Peng Yuqing Fang Zhijiang Ye Zhiyuan Fan Zhilin Liu Xichang Bao Heng Gao Wei Ren Jing Wu Guohong Ma Qianli Chen Chao Zhang Alexey VBalakin Alexander PShkurinov Yiming Zhu Songlin Zhuang | 2022 | Light(Science & Applications)2022，11，8： | 4 |
| 2 | Characterization of refined fish oil from small fish in Mauritania显示文摘In this study,the effects of chemical refining on the physicochemical indices,environmental pollutants,lipid functional groups,relaxation characteristics,fatty acid profiles,and triglyceride(TG)molecular species in crude oil extracted from small fish in Mauritania were evaluated.The acid,peroxide,and iodine values of crude oil were identified as 5.52 mg KOH/g,1.73 meq/kg,and 200.78 g/100 g oil,respectively.After refining,these values were determined to be 0.29 mg KOH/g,0.76 meq/kg,and 210.80 g/100 g oil,respectively.The polychlorinated biphenyls and arsenic content of crude oil were identified as 32.30μg/kg and 1.00 mg/kg,respectively.After refining,these were not detected.The content of eicosapentaenoic acid(EPA)and docosahexaenoic acid(DHA)accounted for as much as 87.55%of the polyunsaturated fatty acids in the refined oil,indicating that high-quality fish oil is suitable as a food supplement.The correlation coefficient of the infrared spectra before and after refining was 0.968,and the relaxation time and peak shape data were almost similar before and after purification.Meanwhile,there were no significant differences(P≥0.05)in fatty acid profiles between the crude and refined oils,except for C16:0(P<0.01).Based on UPLC-Q E-MS/MS detection,137 TG molecules were identified in both crude and refined oils.Among the detected TG molecular species,64 contained EPA or DHA,which accounted for 46.83%and 46.00%of the total TG content in crude and refined oils,respectively.After refining,the content of the molecular species decreased by 31.95 mg/10 g,among which the three most variable molecular species were TG(16:0/18:1/22:6),(16:1/16:2/18:1),and(18:4/16:0/20:5),accounting for 29.26%of the decline of the molecular species.Overall,the refining process had little effect on the fatty acid profile and distribution of TG molecular species in fish oil. | Xuebing Zhang Liu Lin Zhuanxia Chen Jing Zhang Xichang Wang Ningping Tao | 2022 | Aquaculture and Fisheries2022，7，6： | 3 |
| 3 | Prediction of total viable counts on chilled pork using an electronic nose combined with support vector machine显示文摘 | Danfeng Wang Xichang Wang Taiang Liu Yuan Liu | 2011 | Meat Science2011，，2： | 1 |
| 4 | Rapid detection of fish major allergen parvalbumin using superparamagnetic nanoparticle-based lateral flow immunoassay显示文摘 | Cheng Zheng Xichang Wang Ying Lu Yuan Liu | 2012 | Food Control2012，，2： | 1 |
| 5 | Prediction of total viable counts on chilled pork using an electronic nose combined with support vector machine显示文摘 | Wang Danfeng Wang Xichang Liu Taiang | 2012 | Meat Science2012，90，2： | 1 |
| 6 | Prediction of total viable counts on chilled pork using an electronic nose combined with support vector machine显示文摘 | Danfeng Wang Xichang Wang Taiang Liu Yuan Liu | 2011 | Meat Science2011，，2： | 1 |
| 7 | Preparation of multicore millimeter-sized spherical alginate capsules to specifically and sustainedly release fish oil显示文摘Specific and sustained release of nutrients from capsules to the gastrointestinal tract has attracted many attentions in the field of food and drug delivery.In this work,we reported a monoaxial dispersion electrospraying-ionotropic gelation technique to prepare multicore millimeter-sized spherical capsules for specific and sustained release of fish oil.The spherical capsules had diameters from 2.05 mm to 0.35 mm with the increased applied voltages.The capsules consisted of uniform(at applied voltages of≤10 k V)or nonuniform(at applied voltages of>10 k V)multicores.The obtained capsules had reasonable loading ratios(9.7%-6.3%)due to the multicore structure.In addition,the obtained capsules had specific and sustained release behaviors of fish oil into the small intestinal phase of in vitro gastrointestinal tract and small intestinal tract models.The simple monoaxial dispersion electrospraying-ionotropic gelatin technique does not involve complicated preparation formulations and polymer modification,which makes the technique has a potential application prospect for the fish oil preparations and the encapsulation of functional active substances in the field of food and drug industries. | Lina Tao Panpan Wang Ting Zhang Mengzhen Ding Lijie Liu Ningping Tao Xichang Wang Jian Zhong | 2023 | Food Science and Human Wellness2023，12，2： | 1 |
| 8 | Effects of combined treatment of electrolysed water and chitosan on the quality attributes and myofibril degradation in farmed obscure puffer fish ( Takifugu obscurus ) during refrigerated storage显示文摘 | Ran Zhou Yuan Liu Jing Xie Xichang Wang | 2011 | Food Chemistry2011，，4： | 1 |
| 9 | Mieroeneapsulation of sweet orange oil terpeneless using the orifice method显示文摘 | Liu Kehai Xu Yanqin Wang Xichang | 2012 | Journal of Food Engineering2012，110，： | 1 |
| 10 | Extraction of molybdenum from low - gradeNi - Mo ore in sodium hypochlorite solution under mechanical activation 显示文摘 | Weiping Liu Hui Xu Xiyun Yang Xichang Shi | 2011 | Minerals Engineering2011，24，： | 1 |
| 11 | Migration of bisphenol A and its related compounds in canned seafood and dietary exposure estimation显示文摘The present study sought to investigate the migration of target bisphenols,such as bisphenol-A(BPA),bisphenol-F(BPA),bisphenol-A diglycidyI ether(BADGE),bisphenol-A(2,3-dihydroxypropyl)glycidyl ether(BADGE.H_(2)O),bisphenol-A bis(2,3-dihydroxypropyl)ether(BADGE.2H_(2)O),and bisphenol F diglycidyl ether(BFDGE)in 102 samples of several canned seafood,namely canned Antarctic krill,scallop,oysters,mussel,clam,and mantis shrimp stored for months at different temperatures through a high-performance liquid chromatographic-fluorescence detector com-bined with a microwave-assisted extraction method.Except for BFDGE,the other five bisphenols were observed in most of the analyzed sam-ples.The canned shrimp showed the highest migration of BPA(0.089 mg/kg),exceeding the specific migration limit(SML)of BPA(0.05 mg/kg)specified by the European Union,while the migration levels of BADGE and its derivatives were within their SMLs.The migration behavior of bisphenols in the canned seafood was majorly affected by the analytes,storage conditions,and food types.BPA,BADGE.H_(2)O,and BADGE 2H_(2)O were characterized by a rapid migration during the first half of the shelf life,which increased with the increase of temperature,followed by a stabilization or decline of their concentrations for prolonged durations.Besides,the migration of target bisphenols was significantly influenced by the storage temperature in some seafood species.Notably,higher migration level of BPA was found in samples with higher fat content.The average dietary exposure of Chinese adults to BPA,BPF,BADGE.2H_(2)O,BADGE.H_(2)O,and BADGE of canned seafood was estimated at 11.69,1.21,6.47,8.74,and 4.71 ng/(kg d),respectively.The target hazard quotient values of all the analyzed bisphenols were below 1 for the Chinese adults,suggesting an insignificant exposure to these bisphenols through canned seafood consumption. | Na Lin Derong Ma Zhidong Liu Xichang Wang Liyan Ma | 2022 | Food Quality and Safety2022，6，2： | 0 |
| 12 | Analysis of local microstructure and strengthening mechanisms in adjustable-gap bobbin tool friction stir welds of Al-Mg显示文摘The bobbin tool friction stir welding process was used to join 6 mm thick 5A06 aluminum alloy plates.Optical microscope was used to characterize the microstructure.The electron backscatter diffraction(EBSD)identified the effect of non-homogeneous microstructure on the tensile properties.It was observed that the grain size in the top of the stir zone(SZ)is smaller than that in the centre region.The lowest ratio of recrystallization and density of the geometrically-necessary dislocations(GNDs)in the SZ was found in the middle near the thermo-mechanically affected zone(TMAZ)being 22%and 1.15×10^(−13) m^(−2),respectively.The texture strength of the heat-affected zone(HAZ)is the largest,followed by that in the SZ,with the lowest being in the TMAZ.There were additional interfaces developed which contributed to the strengthening mechanism,and their effect on tensile strength was analysed.The tensile tests identified the weakest part in the joint at the interfaces,and the specific reduction value is about 93 MPa. | Dong Wu Wenya Li Qiang Chu Yangfan Zou Xichang Liu Yanjun Gao | 2022 | International Journal of Minerals,Metallurgy and Materials2022，29，8： | 0 |
| 13 | Synthesis of aziridines by visible-light induced decarboxylative cyclization of N-aryl glycines and diazo compounds显示文摘A visible-light induced decarboxylative aza-Darzens reaction between N-aryl glycines and diazo compounds was developed, which affords various mono-substituted aziridines in good yields. | Yong Liu Xichang Dong Guojun Deng Lei Zhou | 2016 | Science China Chemistry2016，59，2： | 0 |
| 14 | Discovery of Fossil Charophytes from the Late Triassic Xujiahe Formation and Early Jurassic Lower Yimen Formation, Sichuan Province, and Its Significance显示文摘This paper describes the fossil charophytes collected from the Late Triassic Xujiahe Formation in Dazuand Early Jurassic Lower Yimen Formation in Xichang, Sichuan Province, and their significance. Up to now,papers dealing with fossil charophytes of the Late Triassic, especially of the Early Jurassic, have been rarelypublished. The description of the two new species of Porochara, P. dazuensis and P. xichangensis, and theirfossil assemblage not only provides an important basis for classification and correlation of red beds insouthwestern China but reveals for the first time the features of the charophyte flora of the Late Triassic-EarlyJurassic in the area, thus offering valuable data for the establishment of Triassic and Jurassic charophyte fossilzones in China. | Liu Junying Chen Zhongliang Institute of Geology, Chinese Academy of Geological Sciences, Beijing Panxi Geological Party, Sichuan Bureau of Geology and Mineral Resources, Xichang Liu Linqun | 1992 | Acta Geologica Sinica(English Edition)1992，66，3： | 0 |
| 15 | A NEW ALGORITHM FOR ELIMINATING PHASE-SHIFT ERROR IN PHASE SHIFTING INTERFEROMETRY显示文摘0INTRODUCTIONPhaseshiftinginterferometry(PSI)forthemeasurementofsurfaceprofileisawel-developedtechnique,whichhastheadvantage... | Liu Chong Liang Xichang Peng Donglin State Key Laboratory of Mechanical Transmission,Chongqing University | 1999 | Chinese Journal of Mechanical Engineering1999，12，2： | 0 |
| 16 | Subtle Side Chain Triggers Unexpected Two-Channel Charge Transport Property Enabling 80%Fill Factors and Efficient Thick-Film Organic Photovoltaics显示文摘To clearly show how important the impact of side chains on organic solar cells(OSCs)is,we designed three acceptors IDIC-CxPh(x=4,5,or 6)via subtle side-chain regulation.Despite this small change,significant distinctions were detected.IDIC-C4Ph devices achieve an optimal efficiency of 13.94%under thermal annealing,but thermal-assistant solvent-vapor annealing hugely suppresses the efficiencies to 10%.However,the C6Ph side chain endows extremely disordered stacking orientations,generating moderate efficiencies of~12.50%.Excitingly,the IDIC-C5Ph affords an unexpected two-channel p-p charge transport(TCCT)property,boosting the fill factor(FF)by up to 80.02%and efficiency to 14.56%,ranking the best among five-ring fused-ladder-type acceptors.Impressively,the special TCCT behavior of IDIC-C5Ph enables 470 nm thick-film OSC with a high FF of up to 70.12%and efficiency of 13.01%,demonstrating the great promise in fabricating largescale OSCs. | Yonghai Li Lu Yu Liangliang Chen Chenyu Han Huanxiang Jiang Zitong Liu Nan Zheng Jiuxing Wang Mingliang Sun Renqiang Yang Xichang Bao | 2021 | The Innovation2021，2，1： | 0 |
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