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41篇 您的检索式:作者名="XinMeng"
    题名 作者 年代 出处 被引量
1Comparison of quality of life between urban and rural gastric cancer patients and analysis of influencing factors显示文摘AIM: The conception of quality of life has been widely accepted by clinic doctors. Evaluations of the treatment effect of chronic diseases have been changed to depend not only on the survival time, but also on the quality of life of the patients. Fuzhou City and Changle County are highincidence areas of the gastric cancer in Fujian Province. The aims of this research were to compare the quality of life of urban patients with that of rural patients and analyze the factors influencing quality of life of gastric cancer patients in Fujian Province. METHODS: The samples were drawn with cluster sampling. The urban sample consisted of 162 patients aged 25 to 75 with 143 males and 19 females. The rural sample consisted of 200 patients aged 32 to 78 with 166 males and 34 females. The patients in both the urban and rural areas were investigated, and their scores on 21 items reflecting the quality of life were measured. The methods of ttest and stepwise regression were used to analyze the data. RESULTS: The average total scores of quality of life of the urban patients and rural patients were 64.11 and 68.69 respectively. There was a significant difference between the means of two samples (P = 0.0004). Seven variables in the regression model estimated by the urban sample and 4 variables in the model by the rural sample were at the level of significance α=0.05. Family income, nutrition and rehabilitating exercise were selected into both the urban and rural regression models. CONCLUSION: Most of the gastric cancer patients have poor quality of life in Fujian Province and the rural patients have lower quality of life than that of urban patients. The patients having more family income have better quality of life, and enhanced nutrition and doing rehabilitating exercise are helpful in improving the quality of life of the gastric cancer patients.JunTian Zhen-ChunChen BinWu XinMeng 2004World Journal of Gastroenterology2004,10,20:22
2Study on relative orbital configuration in satellite formation flying显示文摘In this paper, the relative orbital configurations of satellites in formation flying with non-perturbation and J2 perturbation are studied, and an orbital elements method is proposed to obtain the relative orbital configurations of satellites in formation. Firstly, under the condition of nonperturbation, we obtain many shapes of relative orbital configurations when the semi-major axes of satellites are equal.These shapes can be lines, ellipses or distorted closed curves.Secondly, on the basis of the analysis of J2 effect on relative orbital configurations, we find out that J2 effect can induce two kinds of changes of relative orbital configurations. They are distortion and drifting, respectively. In addition, when J2perturbation is concerned, we also find that the semi-major axes of the leading and following satellites should not be the same exactly in order to decrease the J2 effect. The relationship of relative orbital elements and J2 effect is obtained through simulations. Finally, the minimum relation perturbation conditions are established in order to reduce the influence of the J2 effect. The results show that the minimum relation perturbation conditions can reduce the J2 effect significantly when the orbital element differences are small enough, and they can become rules for the design of satellite formation flying.JunfengLi XinMeng YunfengGao XiangLi 2005Acta Mechanica Sinica2005,21,1:10
3A Humidity-Powered Soft Robot with Fast Rolling Locomotion显示文摘A range of soft robotic systems have recently been developed that use soft,flexible materials and respond to environmental stimulus.The greatest challenge in their design is the integration of the actuator,energy sources,and body of robots while achieving fast locomotion and well-defined programmable trajectories.This work presents such a design that operates under constant conditions without the need for an externally modulated stimulus.By using a humidity-sensitive agarose film and overcoming the isotropic and random bending of the film,the robot,which we call the Hydrollbot,harnesses energy from evaporation for spontaneous and continuous fast self-rolling locomotion with a programmable trajectory in a constant-humidity environment.Moreover,the geometric parameters of the film were fine-tuned to maximize the rolling speed,and the optimised hydrollbot is capable of carrying a payload up to 100%of its own weight.The ability to self-propel fast under constant conditions with programmable trajectories will confer practical advantages to this robot in the applications for sensors,medical robots,actuation,etc.Lei Fu Weiqiang Zhao Jiayao Ma Mingyuan Yang Xinmeng Liu Lei Zhang Yan Chen 2022Research2022,,4:3
4The influence of pore size distribution on thermal conductivity,permeability, and phase change behavior of hierarchical porous materials显示文摘Porous foams have been widely employed to improve heat storage rate and prevent leakage of phase change materials(PCMs).Actual porous foams have non-uniform or hierarchical pore size distribution, which is usually neglected in most researches.Here, we establish hierarchical porous models considering different pore size distributions by using Voronoi tessellations. Effects of pore size distribution on thermal conductivity, permeability, and phase change behavior of hierarchical porous foams/PCMs composites are investigated. Uneven pore size distributions are found to decrease the thermal conductivity of porous foams to some extent. On the other hand, the permeability can be reduced by 27.6%, and the heat storage rate can be improved by 7.7% by introducing moderate hierarchy without changing the total porosity. This work opens a new route to enhance heat storage performance of PCMs via leveraging hierarchy of pore size distribution of porous foams.LIU XiangLei SONG FangZhou XU Qiao LUO QingYang TIAN Yang LI JiaWei YANG XinMeng JIN Yi 2021Science China(Technological Sciences)2021,64,11:3
5Collaborative Filtering Algorithms Based on Kendall Correlation in Recommender Systems显示文摘In this work, Kendall correlation based collaborative filtering algorithms for the recommender systems are proposed. The Kendall correlation method is used to measure the correlation amongst users by means of considering the relative order of the users’ ratings. Kendall based algorithm is based upon a more general model and thus could be more widely applied in e-commerce. Another discovery of this work is that the consideration of only positive correlated neighbors in prediction, in both Pearson and Kendall algorithms, achieves higher accuracy than the consideration of all neighbors, with only a small loss of coverage.YAO Yu ZHU Shanfeng CHEN Xinmeng 2006Wuhan University Journal of Natural Sciences2006,11,5:3
6Construction of NiCeO_(x) nanosheets-skeleton cross-linked by carbon nanotubes networks for efficient electromagnetic wave absorption显示文摘In this work,two-dimensional NiCeOx nanosheet-modified carbon nanotubes(CNTs)composites were prepared by a hydrothermal method.NiCeOx with different morphologies can be formed by adjusting the addition ratio of nickel salt and cerium salt,and the introduction of CNTs in the subsequent synthesis process can effectively prevent the aggregation of NiCeOx nanosheets.Microstructural studies show that hexagonal NiCeOx nanosheets with a size of 100 nm are uniformly intertwined with CNTs.When applied to the attenuation of electromagnetic waves,NiCeOx/CNTs composites exhibit better electromagnetic wave(EMW)absorption performance than pure CNTs and NiCeOx nanosheets due to improved impedance matching and multiple polarization relaxation.At the matching thickness of 1.9 mm,the composite exhibits a minimum reflection loss(RL_(min))of–53.2 dB and an effective absorption bandwidth(RL<–10 dB)of 5.04 GHz with a thickness of 2.3 mm.These results indicate that the as-prepared NiCeOx/CNTs composites have excellent EMW absorption performance and are expected to be a candidate material for EMW absorption.Xinmeng Huang Xuehua Liu Yan Zhang Jixi Zhou Guanglei Wu Zirui Jia 2023Journal of Materials Science & Technology2023,,16:3
7Efficient single-component white light emitting diodes enabled by lanthanide ions doped lead halide perovskites via controlling Forster energy transfer and specific defect clearance显示文摘Currently,a major challenge for metal-halide perovskite light emitting diodes(LEDs)is to achieve stable and efficient white light emission due to halide ion segregation.Herein,we report a promising method to fabricate white perovskite LEDs using lanthanide(Ln^(3+))ions doped CsPbCl_(3) perovskite nanocrystals(PeNCs).First,K^(+)ions are doped into the lattice to tune the perovskite bandgap by partially substituting Cs^(+)ions,which are well matched to the transition energy of some Ln^(3+)ions from the ground state to the excited state,thereby greatly improving the Förster energy transfer efficiency from excitons to Ln3+ions.Then,creatine phosphate(CP),a phospholipid widely found in organisms,serves as a tightly binding surface-capping multi-functional ligand which regulates the film formation and enhances the optical and electrical properties of PeNC film.Consequently,the Eu^(3+)doped PeNCs based-white LEDs show a peak luminance of 1678 cd m^(-2) and a maximum external quantum efficiency(EQE)of 5.4%,demonstrating excellent performance among existing white PeNC LEDs from a single chip.Furthermore,the method of bandgap modulation and the defect passivation were generalized to other Ln^(3+)ions doped perovskite LEDs and successfully obtained improved electroluminescence(EL).This work demonstrates the comprehensive and universal strategies in the realization of highly efficient and stable white LEDs via single-component Ln^(3+)ions doped PeNCs,which provides an optimal solution for the development of low-cost and simple white perovskite LEDs.Rui Sun Donglei Zhou Yujiao Ding Yue Wang Yuqi Wang Xinmeng Zhuang Shuainan Liu Nan Ding Tianyuan Wang Wen Xu Hongwei Song 2022Light(Science & Applications)2022,11,12:3
8Passivating buried interface with multifunctional novel ionic liquid containing simultaneously fluorinated anion and cation yielding stable perovskite solar cells over 23% efficiency显示文摘Interfacial defects and energy barrier would result in serious interfacial non-radiative recombination losses.In addition,the quality of perovskite films is highly dependent on deposition substrates.Consequently,there is an urgent desire to develop multifunctional interface modulators to manage the interface between electron transport layer and perovskite layer.Here,we report a multifunctional buried interface modulation strategy that 4-fluoro-phenylammonium tetrafluoroborate (FBABF_(4)) consisting of simultaneously fluorinated anion and cation is inserted between SnO_(2)layer and perovskite layer.It is uncovered by time-of-flight secondary ion mass spectroscopy that the anion and cation in modifier are mainly located at this interface,which is put down to coordination bond of the fluorine atom on BF_(4)^(-) with SnO_(2),and the hydrogen bond of the fluorine atom on FBA^(+) with formamidinium.This suggests that simultaneous fluorination of anion and cation in the ionic liquid molecule is of crucial importance to ameliorate interfacial contact through chemical linker.The interface modification approach enables the realization of interfacial defect passivation,interfacial energy band alignment modulation,and perovskite crystallization manipulation,which are translated into enhanced efficiency and stability as well as significantly suppressed hysteresis.The multiple functions of FBABF_(4) endow the modified solar cells excellent photovoltaic performance with an efficiency exceeding 23%along with appealing long-term stability.This work highlights the critical role of fluorination strategy in engineering multifunctional organic salt modulators for improving interfacial contact.Deyu Gao Liqun Yang Xiaohui Ma Xueni Shang Chen Wang Mengjia Li Xinmeng Zhuang Boxue Zhang Hongwei Song Jiangzhao Chen Cong Chen 2022Journal of Energy Chemistry2022,31,6:2
9Local electrical charac terization of t wo-dimensional mat erials with functional atomic force microscopy显示文摘Research about two-dimensional (2D) materials is growing exponentially across various scientific and engineering disciplines due to the wealth of unusual physical phenomena that occur when charge transport is confined to a plane. The applications of 2D materials are highly affected by the electrical properties of these mat erials, including curren t dist ribution, surface pot ential, dielectric response, conductivity, perm计tivity, and piezoelectric response. Hence, it is very crucial to characterize these properties at the nanoscale. The Atomic Force Microscopy (AFM)-based techniques are powerful tools that can simultaneously characterize morphology and electrical properties of 2D materials with high spatial resolution, thus being more and more extensively used in this research field. Here, the principles of these AFM techniques are reviewed in detail. After that, their representative applications are further demonstrated in the local characterization of various 2D materials? elcctrical properties.Sabir Hussain Kunqi Xu Shili Ye Le Lei Xinmeng Liu Rui Xu Liming Xie Zhihai Cheng 2019Frontiers of physics2019,14,3:2
10Clinical factors associated with composition of lung microbiota and important taxa predicting clinical prognosis in patients with severe community-acquired pneumonia显示文摘Few studies have described the key features and prognostic roles of lung microbiota in patients with severe community-acquired pneumonia(SCAP).We prospectively enrolled consecutive SCAP patients admitted to ICU.Bronchoscopy was performed at bedside within 48 h of ICU admission,and 16S rRNA gene sequencing was applied to the collected bronchoalveolar lavage fluid.The primary outcome was clinical improvements defined as a decrease of 2 categories and above on a 7-category ordinal scale within 14 days following bronchoscopy.Sixty-seven patients were included.Multivariable permutational multivariate analysis of variance found that positive bacteria lab test results had the strongest independent association with lung microbiota(R2=0.033;P=0.018),followed by acute kidney injury(AKI;R2=0.032;P=0.011)and plasma MIP-1βlevel(R2=0.027;P=0.044).Random forest identified that the families Prevotellaceae,Moraxellaceae,and Staphylococcaceae were the biomarkers related to the positive bacteria lab test results.Multivariable Cox regression showed that the increase inα-diversity and the abundance of the families Prevotellaceae and Actinomycetaceae were associated with clinical improvements.The positive bacteria lab test results,AKI,and plasma MIP-1βlevel were associated with patients’lung microbiota composition on ICU admission.The families Prevotellaceae and Actinomycetaceae on admission predicted clinical improvements.Sisi Du Xiaojing Wu Binbin Li Yimin Wang Lianhan Shang Xu Huang Yudi Xia Donghao Yu Naicong Lu Zhibo Liu Chunlei Wang Xinmeng Liu Zhujia Xiong Xiaohui Zou Binghuai Lu Yingmei Liu Qingyuan Zhan Bin Cao 2022Frontiers of Medicine2022,16,3:2
11Influence of Spatial-Temporal and Environmental Factors on Larimichthys polyactis, Octopus variabilis, and Species Aggregated Set-Net CPUEs in Haizhou Bay, China显示文摘Set-nets are common alongshore fishing gear used in Haizhou Bay, which rely on flow to catch fish. The catch per unit effort(CPUE) of set-net is affected by spatial-temporal and environmental factors but no research has been conducted on this subject. In this study, we used generalized additive models(GAMs) to explore the influence of spatial-temporal and environmental factors on CPUEs of species aggregated, small yellow croaker(Larimichthys polyactis), and octopus(Octopus variabilis) based on logbooks investigations conducted at 4 stations in an alongshore area of Haizhou Bay from 2011 to 2012. The results showed that all CPUEs exhibited significant spatial-temporal differences at various scales. Aggregated CPUE was high when the sea surface temperature(SST) was 15-18℃ and 20-23℃, which was mainly determined by life history traits of the octopus and small yellow croaker(optimal SSTs 14-17℃ and 19-24℃, respectively). Chlorophyll-a concentration had significant influences on the aggregated, small yellow croaker and octopus CPUEs at optimal ranges of 3.8-6.2 mg m^(-3), 4.2-4.8 mg m^(-3) and 4.5-5.5 mg m^(-3), respectively. Flow through the net had positive relationships with CPUEs. The approximate logarithmic trends in regression curves had a critical point of 2.5 Mm^3 d^(-1), which was the dividing point that differentiated whether the major factor affecting CPUEs was the flow velocity or the fishery resource. Our results from this study will help guide fishery production and improve catch rate of set-net fishing in Haizhou Bay.TANG Yanli MA Shuyang LIU Changdong WANG Xinmeng CHENG Shasha 2018Journal of Ocean University of China2018,17,4:2
12Integrative Annotation of Variants from 1092 Humans: Application to Cancer Genomics显示文摘Ekta Khurana Yao Fu Vincenza Colonna Xinmeng Jasmine Mu Hyun Min Kang Tuuli Lappalainen Andrea Sboner Lucas Lochovsky Jieming Chen Arif Harmanci Jishnu Das Alexej Abyzov Suganthi Balasubramanian Kathryn Beal Dimple Chakravarty Daniel Challis Yuan Chen Dec 2013Science2013,,6154:1
13Algorithm Based on Symmetry for Locating the Finder Pattern of the QR Code显示文摘Hu Donghong Chen Xinmeng Yu Dan 2006Geospatial Information Science2006,,:1
14One-step synthesis of monodisperse and hierarchically mesostructured silica particles with a thin shell 显示文摘Chen Hongmin Hu Tao Zhang Xinmeng 2010Langmuir2010,26,13:1
15The Informal Sector and Rural‐Urban Migration – A Chinese Case Study显示文摘XinMeng 2002Asian Economic Journal2002,,1:1
16Sectoral Gen- der Wage Differentials and Discrimination in the Transitional Chinese Economy 显示文摘LIU PAK - WAI XINMENG JUNSEN ZHANG 2000Journal Population Economics2000,,8:1
17An XMLquery rewriting mechanism with multiple ontologies integrationbased on complex semantic mapping显示文摘GU Jinguang XU Baowen CHEN Xinmeng 2008Information Fusion2008,10,9:1
18HasChina Run out ofSurplusLabour?显示文摘JaneGolley&XinMeng 2011ChinaEconomic Review2011,,22:1
19Clinical Implications of BMI-1 in Cancer Stem Cells of Laryngeal Carcinoma显示文摘Dan Yu Yan Liu Jingpu Yang Chunshun Jin Xue Zhao Jinzhang Cheng Xueshibojie Liu Xinmeng Qi 2015Cell Biochemistry and Biophysics2015,,1:1
20Environmental effects of mariculture in China:An overall study of nitrogen and phosphorus loads显示文摘Eutrophication in coastal area has become more and more serious and mariculture potential is a main cause.Although there are some quantitative research on nutrient loads in national and global perspective,the calculation method problems make the results controversial.In this paper,the farming activities are divided into fed culture types(include cage culture and pond culture)and extractive culture types(e.g.seaweed,filter-feeding shellfish culture).Based on the annual yield of China in 2019 and feed coefficient of fed culture types and carbon(C),nitrogen(N),and phosphorus(P)content of extractive culture types,the annual nutrient loads was estimated.The results showed that to coastal region of China(1)annual nutrient released by fed culture types were about58451 t of N,9081 t of P,and annual nutrient removed by harvest of extractive culture types were 109245 t of N,11980 t of P and 1.86×10^(6)t of C.Overall,the net amount of nutrient removed annually by mariculture industry were 50794 t of N and 2901 t of P.(2)The nutrient released from mariculture industry influenced nutrient stoichiometry.Pond farming and seaweed farming had the potential of increasing the molar concentration ratio of N and P(N:P),while cage farming and bivalve farming decreased the N:P.(3)Due to different mariculture types and layouts in the coastal regions in China,N and P loading were regional different.Among the coastal regions in China,net release of nutrient from mariculture occurred only in Hainan and Guangxi regions,while in the other regions,N and P were completely removed by harvest.We suggest decrease the amount of fed culture types and increase the amount of integrated culture with extractive culture types.This study will help to adjust mariculture structure and layout at the national level to reduce the environmental impact.Jihong Zhang Wenguang Wu Yuchen Li Yi Liu Xinmeng Wang 2022Acta Oceanologica Sinica2022,41,6:1
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