维普中文期刊产品整合服务
23篇 您的检索式:作者名="LIU Yameng"
    题名 作者 年代 出处 被引量
1How does ecological civilization construction affect carbon emission intensity?Evidence from Chinese provinces’panel data显示文摘Ecological civilization construction is a new concept and trend in the era of China's high-quality development.It requires the collaborative propulsion of an ecological economic civilization,ecological social civilization,and ecological environment civilization.Reducing carbon emission intensity is an important issue facing the Chinese government in the backdrop of global warming.Thus,studying the influence of ecological civilization construction on carbon emission intensity from different perspectives has important theoretical and practical significance.In this study,the influences of the three subsystems of an ecological civilization on carbon emission intensity are empirically analyzed using Chinese provincial panel data from 2004 to 2016 and a spatial Durbin model based on the STIRPAT model.First,the Moran's I of carbon emission intensity in Chinese provinces was between 0.425 and 0.473.This indicates positive spatial correlation and illustrates that the carbon emission intensity of China's provinces can influence each other.The reasons behind this correlation include close ties between neighboring provinces and similarities in natural,economic,and social characteristics.Second,the correlation coefficients of ecological economic civilization,ecological social civilization,and ecological environment civilization to carbon emission intensity are−4.743139,2.865884,and−0.3246447,respectively.This illustrates that an ecological economic civilization and ecological environment civilization can reduce carbon emission intensity,while an ecological social civilization can increase it.To reduce total carbon emission intensity,the three subsystems of ecological civilization should have a negative relationship with carbon emission intensity,so the effect of ecological social civilization on carbon emission intensity should be changed.Third,the spatial spillover effect of ecological social civilization did not pass the significance test.The correlation coefficients of spatial spillover effect to ecological economic civilization and ecological environment civilization are 2.046531 and−3.238323,respectively.Improving the ecological economic civilization can increase the carbon emission intensity of periphery provinces,while improving the ecological environment civilization can reduce it.Thus,it is necessary to enhance cooperation between periphery provinces and establish a trans-provincial cooperation mechanism for reducing carbon emissions.Kai Liu Yameng Tao Yi Wu Chengxin Wang 2020Chinese Journal of Population,Resources and Environment2020,18,2:3
2Research on Services Modeling in LTE Networks显示文摘Service modeling offers fundamental guidance to the construction and operation of mobile telecommunication networks. As the domestic LTE networks have been deployed massively, the refined LTE services model needs to be established urgently. In this paper, we firstly extract characteristic parameters of services from statistical data in 3G networks, especially in time, space and user dimension. Secondly, the development trends of LTE services are analyzed. And the refined LTE service model is established. Finally, prediction results of LTE service development in China is given, which could provide effi cient support for networks' optimization and evolution.LIU Qi SHI Yameng LI Fuchang FAN Bin 2016China Communications2016,13,2:2
3Air plasma-sprayed high-entropy (Y_(0.2)Yb_(0.2)Lu_(0.2)Eu_(0.2)Er_(0.2))_(3)Al_(5)O_(12) coating with high thermal protection performance显示文摘High-entropy rare-earth aluminate(Y_(0.2)Yb_(0.2)Lu_(0.2)Eu_(0.2)Er_(0.2))_(3)Al_(5)O_(12)(HE-RE_(3)Al_(5)O_(12))has been considered as a promising thermal protection coating(TPC)material based on its low thermal conductivity and close thermal expansion coefficient to that of Al2O3.However,such a coating has not been experimentally prepared,and its thermal protection performance has not been evaluated.To prove the feasibility of utilizing HE-RE_(3)Al_(5)O_(12) as a TPC,HE-RE_(3)Al_(5)O_(12) coating was deposited on a nickelbased superalloy for the first time using the atmospheric plasma spraying technique.The stability,surface,and cross-sectional morphologies,as well as the fracture surface of the HE-RE_(3)Al_(5)O_(12) coating were investigated,and the thermal shock resistance was evaluated using the oxyacetylene flame test.The results show that the HE-RE_(3)Al_(5)O_(12) coating can remain intact after 50 cycles at 1200℃ for 200 s,while the edge peeling phenomenon occurs after 10 cycles at 1400℃ for 200 s.This study clearly demonstrates that HE-RE_(3)Al_(5)O_(12) coating is effective for protecting the nickel-based superalloy,and the atmospheric plasma spraying is a suitable method for preparing this kind of coatings.Kailun WANG Jinpeng ZHU Hailong WANG Kaijun YANG Yameng ZHU Yubin QING Zhuang MA Lihong GAO Yanbo LIU Sihao WEI Yongchun SHU Yanchun ZHOU Jilin HE 2022Journal of Advanced Ceramics2022,11,10:2
4Three Iissues in the Argumentative Conception of Early Chinese Discourse, Philosophy East & West 显示文摘Liu Yameng 1996(1): 33 -581996,,1:1
5Aristotle and the Stasis Theory:A Reexamination显示文摘Liu Yameng 0,,:1
6Aristotle and the Stasis Theory: A reexamination 显示文摘Liu Yameng 1991Rhetoric Society Quarterly1991,21,1:1
7Juan Zhang Synthesis and Superior Anode Performances of TiO2-Carbon-rGO Composites in Lithium-Ion Batteries 显示文摘Yameng Ren Juan Zhang Yanyan Liu 2012ACS Appl Mater Interfaces2012,,4:1
8Three issues in the argumentative conception of early Chinese discourse显示文摘Liu Yameng 0,,01:1
9To capture the essence of Chinese rhetoric: An anatomy of a paradigm in comparative rhetoric显示文摘Yameng Liu 1996Rhetoric Review1996,,2:1
10Boosting self-trapped exciton emission from Cs_(3)Cu_(2)I_(5)nanocrystals by doping-enhanced exciton-phonon coupling显示文摘Self-trapped excitons(STEs)emission from halide perovskites with strong exciton-phonon coupling has attracted considerable attention due to the widespread application in optoelectronic devices.Nevertheless,the in-depth understanding of the relationship between exciton-phonon coupling and luminescence intensity remains incomplete.Herein,a doping-enhanced exciton-phonon coupling effect is observed in Cs_(3)Cu_(2)I_(5)nanocrystals(NCs),which leads to a remarkable increasement of their STEs emission efficiency.Mechanism study shows that the hetero-valent substitution of Cu+with alkaline-earth metal ions(AE^(2+))causes a greater degree of Jahn-Teller distortion between the ground state and excited state structures of[Cu_(2)I_(5)]_(3)-clusters as evidenced by our spectral analysis and first-principles calculations.As a consequence,an X-ray detector based on these Cs_(3)Cu_(2)I_(5):AE NCs delivers an X-ray imaging resolution of up to 10 lp·mm^(-1) and a low detection limit of 0.37μGyair·s^(-1),disclosing the potential of doping-enhanced exciton-phonon coupling effect in improving STEs-emission and practical application for X-ray imaging.Xiaohan Li Aijun Liu Zhaoyu Wang Youchao Wei Qun Lin Yameng Chen Yongsheng Liu Maochun Hong 2023Nano Research2023,16,7:0
11A subspace based method for modelling building’s thermal dynamic in district heating system and parameter extrapolation verification显示文摘The district heating system(DHS)consumes a lot of energy in winter,and its control accuracy needs to be improved urgently.To apply advanced process control(APC)in DHS,the thermal dynamic model of the existing buildings is essential.This paper uses the subspace method which is a data-driven approach for modelling the thermal dynamics of the building.The model’s performance is analyzed using the collected data,and the differences compared to the classical methods are also analyzed.The method reduces the RMSE by about 20%compared with the ARX model for the same complexity.Subsequently,the analysis of the training residuals indicates that the estimate of periodic intra-building disturbance can be obtained by minimizing the training residuals.By introducing the estimated disturbance function,the RMSE on the test set is further reduced by 26%.At the end of the article,a simple parameter extrapolation experiment is conducted,and the result shows that the parameters can be extrapolated to other buildings without large errors.Junfeng Zhang Lanbin Liu Yameng Liu 2023Building Simulation2023,16,11:0
12Stability assessment of tree ring growth of Pinus armandii Franch in response to climate change based on slope directions at the Lubanling in the Funiu Mountains,China显示文摘Global warming will affect growth strategies and how trees will adapt.To compare the response of tree radial growth to climate warming in different slope directions,samples of Pinus armandii Franch were collected and treering chronologies developed on northern and western slopes from the Lubanling in the Funiu Mountains.Correlation analyses showed that two chronologies were mainly limited by temperatures in the previous June–August and the combination of temperatures and moisture in the current May–July.The difference of the climate response to slopes was small but not negligible.Radial growth of the LBL01 site on the northern slope was affected by the combined maximum and minimum temperatures,while that of the LBL02 site was affected by maximum temperatures.With regards to moisture,radial growth of the trees on the north slope was influenced by the relative humidity in the current May–July,while on the western slope,it was affected by the relative humidity in the previous June–August,the current May–July and the precipitation in the current May–July.With the change in climate,the effects of the main limiting factors on growth on different slopes were visible to a certain extent,but the differences in response of trees on different slopes gradually decreased,which might be caused by factors such as different slope directions and the change in diurnal temperature range.These results may provide information for forest protection and ecological construction in this region,and a scientific reference for future climate reconstruction.Jinkuan Li Jianfeng Peng Xiaoxu Wei Meng Peng Xuan Li Yameng Liu Jiaxin Li 2024Journal of Forestry Research2024,35,2:0
13Atomic-resolution investigation of structural transformation caused by oxygen vacancy in La_(0.9)Sr_(0.1)TiO_(3+δ)titanate layer perovskite ceramics显示文摘Perovskite functional ceramics have been widely applied for thermal protection owing to their unique physical properties.However,formation of oxygen vacancies under external stimuli usually limits their performance in practical applications.Therefore,the mechanism of the effect of oxygen vacancy on the layer structure of perovskite La_(0.9)Sr_(0.1)TiO_(3+δ)was investigated by experiments and first-principles simulations.The experimental results showed that the lattice distortion occurred in oxygen-deficient environment to give a longer c-axis,along with a significant adjustment in the modes of A/B–O bond vibration,resulting in lower reflectivity.Advanced transmission electron microscopy studies revealed that oxygen vacancies induced localized atomic rearrangements via[TiO_(6)]layer movements to adapt to the lattice distortion.This eventually restructured a part of the layer interfaces by expanding the overlapping projection of atoms in the c-axial direction.The specific transformation process was described as a compendious process,while geometric phase analysis effectively clarified how oxygen vacancies can inhibit reflectivity on the layer structure.Thus,this study provides effective approaches for researching the effects of oxygen vacancy on the physical properties of orthorhombic layer perovskite structures,which may facilitate the development of perovskite-based functional devices.Yang Zhao Yameng Zhu Jinpeng Zhu Hailong Wang Zhuang Ma Lihong Gao Yanbo Liu Kaijun Yang Yongchun Shu Jilin He 2022Journal of Materials Science & Technology2022,,9:0
14Video summarization via global feature difference optimization显示文摘Video summarization aims at selecting valuable clips for browsing videos with high efficiency.Previous approaches typically focus on aggregating temporal features while ignoring the potential role of visual representations in summarizing videos.In this paper,we present a global difference-aware network(GDANet)that exploits the feature difference across frame and video as guidance to enhance visual features.Initially,a difference optimization module(DOM)is devised to enhance the discriminability of visual features,bringing gains in accurately aggregating temporal cues.Subsequently,a dual-scale attention module(DSAM)is introduced to capture informative contextual information.Eventually,we design an adaptive feature fusion module(AFFM)to make the network adaptively learn context representations and perform feature fusion effectively.We have conducted experiments on benchmark datasets,and the empirical results demonstrate the effectiveness of the proposed framework.ZHANG Yunzuo LIU Yameng 2023Optoelectronics Letters2023,19,9:0
15How do lateral septum projections to the ventral CA1 influence sociability?显示文摘Social dysfunction is a risk factor for several neuropsychiatric illnesses.Previous studies have shown that the lateral septum(LS)-related pathway plays a critical role in mediating social behaviors.Howeve r,the role of the connections between the LS and its downstream brain regions in social behavio rs remains unclea r.In this study,we conducted a three-chamber test using electrophysiological and chemogenetic approaches in mice to determine how LS projections to ventral CA1(vCA1)influence sociability.Our res ults showed that gamma-aminobutyric acid(GABA)-e rgic neuro ns were activated following social experience,and that social behavio rs were enhanced by chemogenetic modulation of these neurons.Moreover,LS GABAergic neurons extended their functional neural connections via vCA1 glutamatergic pyramidal neurons,and regulating LSGABA→vCA1Gluneural projections affected social behaviors,which were impeded by suppressing LSprojecting vCA1 neuronal activity or inhibiting GABAAreceptors in vCA1.These findings support the hypothesis that LS inputs to the vCA1 can control social prefe rences and social novelty behaviors.These findings provide new insights rega rding the neural circuits that regulate sociability.Dan Wang Di Zhao Wentao Wang Fengai Hu Minghu Cui Jing Liu Fantao Meng Cuilan Liu Changyun Qiu Dunjiang Liu Zhicheng Xu Yameng Wang Yu Zhang Wei Li Chen Li 2024Neural Regeneration Research2024,19,8:0
162,11-Dimethoxyldipyridopurinone as an efficientreducing visible-light photocatalyst for organic transformations显示文摘We report for the first time 2,11-dimethoxyldipyridopurinone (DP4) as a potent reducing visible-lightphotocatalyst toward three prototypic organic transformations: redox-neutral intramolecular aryltrifluoromethylations of acrylamides and the direct C–H arylation of heteroarenes with aryl diazonium salts, netoxidative hydroxylations of arylboronic acids using molecular oxygen as a green oxidant, and the netreductive dehalogenation/deuteration of α-bromocarbonyl compounds. This work reveals a bright futurefor dipyridopurinone derivatives as a new class of metal-free visible-light photocatalysts for a wide rangeof organic transformations.Yameng Wan Qingfeng Liu Hao Wu Zhiguo Zhang Guisheng Zhang 2022Organic Chemistry Frontiers2022,9,6:0
17Thermogravimetric analysis of bamboo-tar under different heating rates based on distributed activation energy model显示文摘Carbon fiber is a kind of new polymer material with excellent mechanical properties and being applied widely.The process of carbon fiber prepared by bamboo tar,including extraction,condensation,spinning,oxidation and carbonation,is influenced by the pyrolysis kinetics significantly.In this paper,the thermogravimetric analysis(TGA)of bamboo tar produced in the process of pyrolysis and gasification of the bamboo which is known as Phylostachys sulphurea,was analyzed by the distributed activation energy model(DAEM)to understand the kinetic properties and parameters of bamboo tar.The thermogravimetric analysis of bamboo tar which is used as the raw material of carbon fiber was conducted under 5 different heating rates(i.e.5,10,15,30 and 50℃/min,etc.)in nitrogen atmosphere.The results show that the activation energy of bamboo tar and the exponential factor increased significantly with the increase of the heating rate,and the low heating rate is advantageous to the extraction of bamboo tar solvent and the thermal polycondensation,which can provide scientific reference for the optimization of carbon fiber technology.The thermal weight results show that the temperature range of bamboo tar being decomposed rapidly is 213℃-410℃.The ranges of the activation energy were calculated by DAEM,which have small difference in comparisons with five heating rates when the conversion rate is at 0.1-0.6 and the average value of the activation energy is 119 kJ/mol.The stability range of the activation energy is enlarged when the conversion rate is greater than 0.6 and heating rate increases.Huan Zhang Beibei Yan Tingzhou Lei Tao Liu Jianjun Hu Yameng Li Guanyi Chen 2018International Journal of Agricultural and Biological Engineering2018,11,6:0
18Relationship on the Head Deviation Rate and Laying Length of Porous Tubes显示文摘To improve the utilization efficiency of water the laying length of porous tubes was analyzed. Considering long porous tubes the irrigation uniformity of porous tubes was studied by analyzing the deviation rate of the working head of porous tubes and through an impact analysis of the deviation ratio of flow rate based on laying length slope pressure head and perforation spacing. Results showed that the deviation ratio of the flow rate could be reduced by decreasing the length of tubes and increasing the slope. The deviation ratio of flow rate was less influenced by pressure head and perforation spacing. A best laid slope resulted in a longer laying length of the porous tubes and they were not constant.Yameng Wang Huanfang Liu 2019Journal of Harbin Institute of Technology(New Series)2019,26,5:0
19The Research on Identification of Resistance to Sorghum Aphid [Melanaphis Sacchari(Zehntner)] Employing Indoor Artificial Infestation Technique显示文摘[Objective] The paper was to establish a quick and effective indoor identification method of sorghum resistance to aphid uninfluenced by seasons.[Method] Based on the indoor reproduction technique of aphids,the sorghum varieties with different resistant performances against aphids in fields were conducted inoculation test in the laboratory according to different seedling culture media,different survey periods of aphid quantity,different leaf ages for inoculation,different inoculation quantity of aphids and different aphid sizes. Three hundred sorghum materials were identified in both laboratory and field. [Result] The number of aphids per seedling on the fifth day after inoculation gave the best score of plant resistance to sorghum aphid by using the loam as the seedling culture media,and inoculating three different sizes of aphids in seedlings at two-leaf stage. Thus,the indoor identification technique of resistance to sorghum aphids was as follows:(1) sorghum seeds were sown in loam at room temperature of 22-26 ℃ and air humidity of 55%-75%;(2) three aphids with different sizes were inoculated in seedlings at two-leaf stage;(3) the number of aphids per seeding were surveyed on the fifth day after inoculation;(4) plant resistance to sorghum aphid was evaluated according to number of aphids per seedling on the fifth day after inoculation. The resistant grade of sorghum variety was evaluated according to distribution of aphid quantity per seedling in a 100-seedlings population. The resistance materials identified by indoor method at seedling stage had consistent performance with field identification. [Conclusion] The method could be used for resistance identification of sorghum varieties and hybrids,and accurate identification and selection of individual resistance of hybrid offspring,which could improve selection efficiency of individual resistant plant against aphids in hybrid offspring and identification accuracy of individual resistant plant among molecular marker population.Lv Peng Qi Yameng Liu Guoqing Hou Shenglin Li Suying Ji Guisu Ma Xue Du Ruiheng 2013Plant Diseases and Pests2013,4,3:0
20Hydroxyapatite reinforced inorganic-organic hybrid nanocomposite as high-performance adsorbents for bilirubin removal in vitro and in pig models显示文摘Highly efficient removal of bilirubin from whole blood directly by hemoperfusion for liver failure therapy remains a challenge in the clinical field due to the low adsorption capacity,poor mechanical strength and low biocompatibility of adsorbents.In this work,a new class of nanocomposite adsorbents was constructed through an inorganic-organic co-crosslinked nanocomposite network between vinyltriethoxysilane(VTES)-functionalized hydroxyapatite nanoparticles(V-Hap)and non-ionic styrene-divinylbenzene(PS-DVB)resins(PS-DVB/V-Hap)using suspension polymerization.Notably,our adsorbent demonstrated substantially improved mechanical performance compared to the pure polymer,with the hardness and modulus increasing by nearly 3 and 2.5 times,respectively.Moreover,due to the development of a mesoporous structure,the prepared PS-DVB/V-Hap3 exhibited an ideal adsorption capacity of 40.27 mg·g^(-1).More importantly,the obtained adsorbent beads showed outstanding blood compatibility and biocompatibility.Furthermore,in vivo extracorporeal hemoperfusion verified the efficacy and biosafety of the adsorbent for directly removing bilirubin from whole blood in pig models,and this material could potentially prevent liver damage and improve clinical outcomes.Taken together,the results suggest that PS-DVB/V-Hap3 beads can be used in commercial adsorption columns to threat hyperbilirubinemia patients through hemoperfusion,thus replacing the existing techniques where plasma separation is initially required.Yamin Chai Zhuang Liu Yunzheng Du Lichun Wang Jinyan Lu Qian Zhang a Wenyan Han Tingting Wang Yameng Yu Lisha Sun Lailiang Ou 2021Bioactive Materials2021,6,12:0
返回顶部 每页显示:
共2页 首页 上一页 第1页 下一页 末页 /2 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费