|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Effects of non-starch polysaccharides enzymes on pancreatic and small intestinal digestive enzyme activities in piglet fed diets containing high amounts of barley显示文摘AIM:To investigate effects of non-starch polysaccharides(NSP)enzymes on pancreatic and small intestinal digestive enzyme activities in piglet fed diets containing high amounts of barley.METHODS:Sixty crossbred piglets averaging 13.5kg were randomly assigned to two treatment groups with three replications (pens) based on sex and mass. Each group was fed on the diet based on barley with or without added NSP enzymes (0.15%) for a 40-d period. At the end of the experiment the pigs were weighed. Three piglets of each group were chosen and slaughtered. Pancreas, digesta from the distal end of the duodenum and jejunal mucosa were collected for determination. Activities of the digestive enzymes trypsin, chymotrypsin, amylase and lipase were determined in the small intestinal sections as well as in homogenates of pancreatic tissue.Maltase,sucrase,lactase and γ-glutamyl transpeptidase (γ-I-) activities were analyzed in jejunal mucosa.RESULTS:Supplementation with NSP enzymes improved growth performance of piglets.It showed that NSP enzymes had no effect on digestive enzyme activities in pancreas,but decreased the activities of proteolytic enzyme,trypsin,amylase and lipase in duodenal contents by 57.56%,76.08%,69.03% and 40.22%(P<0.05) compared with control,and increased γ-GT activities in jejunal mucosa by 118.75%(P<0.05).CONCLUSION:Supplementation with NSP enzymes in barley based diets could improve piglets' growth performance,decrease activities of proteolytic enzyme, trypsin, amylase and lipase in duodenal contents and increase γ-GT activities in jejunal mucosa. | Wei-FenLi JieFeng Zi-RongXu Cai-MeiYang | 2004 | World Journal of Gastroenterology2004，10，6： | 11 |
| 2 | Efficacy of tanshinone ⅡA and mesenchymal stem cell treatment of learning and memory impairment in a rat model of vascular dementia显示文摘OBJECTIVE: To investigate the efficacy of administration of tanshinone Ⅱ A(TSA) combined with mesenchymal stem cells(MSCs) for the treatment of learning and memory impairment caused by vascular dementia(Va D) and to determine the underlying mechanism.METHODS: Modified four-vessel occlusion was used to establish a Va D model in rats, and their spatial learning and memory capacity was assessed by the Morris water maze. The rats were randomized into MSCs, TSA, MSCs combined with TSA, vehicle and sham groups. Histological changes were determined by hematoxylin and eosin staining, and the hippocampal neuron apoptosis ratio was assessed by flow cytometry. Western blotting was performed to detect Bcl-2 and Bax expression. The reactive oxidative species(ROS) levels and the activity of total superoxide dismutase(T-SOD), an antioxidant enzyme in the rat hippocampus, were determined.RESULTS: TSA combined with MSCs treatment administered by intravenous injection in the tail significantly attenuated cognitive deficits in the Va D model compared with the vehicle group(P < 0.01),and its protective effect on cognitive function was greater than that obtained by treatment with MSCs or TSA alone. Furthermore, TSA combined with MSCs treatment achieved synergistic effects in suppressing neuronal apoptosis in the rat hippocampus caused by global brain ischemia via up-regulating the expression of Bcl-2, an anti-apoptosis protein, and decreasing the expression of Bax, a pro-apoptotic protein. In addition, TSA combined with MSCs treatment attenuated ROS production and enhanced T-SOD activity in the rat hippocampus, and the antioxidant effect was greater than that of treatment with MSCs or TSA alone.CONCLUSION: TSA combined with MSCs treatment improved the spatial learning and memory capacity in a Va D model via suppressing neuronal apoptosis and antioxidant activity in the hippocampus, and this improvement was greater with combined treatment than with treatment with MSCs or TSA alone. | KONG Deyan LUO Jiefeng SHI Shengliang HUANG Zhenhua | 2021 | Journal of Traditional Chinese Medicine2021，41，1： | 9 |
| 3 | Nonlinear hysteresis identification and compensation based on the discrete Preisach model of an aircraft morphing wing device manipulated by an SMA actuator显示文摘The conception of aircraft morphing wings thrives in aeronautics since the appearance of shape memory alloys(SMAs). An aircraft morphing wing device, manipulated by an SMA actuator, inherits the intrinsic nonlinear hysteresis from the SMA actuator, ending up with control disadvantages. Conventionally, systems with SMA actuators are constrained to bi-stable states to bypass the hysteresis region. Rather than retreating a morphing wing device to bi-stable states, this paper is dedicated to transcend the morphing wing device beyond the customary limit. A methodology of discrete Preisach modeling, which identifies the hysteresis of the morphing wing device, is proposed herein. An array of discrete equal-distance points is applied to the Preisach plane in order to derive the Preisach density over the partitioned unit of the Preisach plane. Discrete Preisach modeling is fulfilled by the discrete first-order reversible curve(DFORC). By utilizing the discrete Preisach model, the aircraft morphing wing device is simulated; the validity and accuracy of discrete Preisach modeling are demonstrated by contrasting the simulated outcome with experimental data of the major hysteretic loop and the wingspan-wise displacement over time; a comparison between simulation and experimental results exhibits consistency. Afterwards, a hysteresis compensation strategy put forward in this paper is implemented for quasi-linear control of the aircraft morphing wing device, which manifests a compensated shrinking hysteresis loop and attains the initiative of extending the morphing range to the intrinsic hysteretic region. | Yuchen CHEN Xing SHEN Jiefeng LI Jinjin CHEN | 2019 | Chinese Journal of Aeronautics2019，32，4： | 7 |
| 4 | Two-dimensional materials: Emerging toolkit for construction of ultrathin high-efficiency microwave shield and absorber显示文摘 | Mingjun Hu Naibo Zhang Guangcun Shan Jiefeng Gao Jinzhang Liu Robert K. Y. Li | 2018 | Frontiers of physics2018，13，4： | 6 |
| 5 | Design Around Bundle Patent Portfolio Based on Technological Evolution显示文摘Product innovation can be achieved by analyzing leading products patents in the market.Different methods have been proposed for design around patent,commonly using the elimination or replacement of a single patent element However,the existing research fails to restore the position and function of the design around object in the original patent portfolio of enterprises,which often leads to the phenomenon of evading one patent and violating another.This paper proposes a method for design around patent through using the fusion of technologies of the evolution theory and bundle-type patent portfolio analysis in the initial stage of product development.The object system is analyzed to select technical opportunities through the evolutionary path of technologies and functional trimming methods to achieve circumvent barriers of bundle-type patents.The bundle patent portfolio is analyzed for the product evolution with a radar map.The technological evolution path is combined with the TRIZ innovation method to identify and solve the design problem.Patentability of the new design is evaluated using the patent system rules for innovative scheme difference from the original patent portfolio.The method is verified in a case study for the design of a glass-wiping robot.The design solution has been patented. | Hui Li Jiefeng Yuan Runhua Tan Qingjin Peng | 2019 | Chinese Journal of Mechanical Engineering2019，32，5： | 5 |
| 6 | Advanced Anode Materials of Potassium Ion Batteries:from Zero Dimension to Three Dimensions显示文摘Potassium ion batteries(PIBs)with the prominent advantages of sufficient reserves and economical cost are attractive candidates of new rechargeable batteries for large-grid electrochemical energy storage systems(EESs).However,there are still some obstacles like large size of K+to commercial PIBs applications.Therefore,rational structural design based on appropriate materials is essential to obtain practical PIBs anode with K+accommodated and fast diffused.Nanostructural design has been considered as one of the effective strategies to solve these issues owing to unique physicochemical properties.Accordingly,quite a few recent anode materials with different dimensions in PIBs have been reported,mainly involving in carbon materials,metal-based chalcogenides(MCs),metal-based oxides(MOs),and alloying materials.Among these anodes,nanostructural carbon materials with shorter ionic transfer path are beneficial for decreasing the resistances of transportation.Besides,MCs,MOs,and alloying materials with nanostructures can effectively alleviate their stress changes.Herein,these materials are classified into 0D,1D,2D,and 3D.Particularly,the relationship between different dimensional structures and the corresponding electrochemical performances has been outlined.Meanwhile,some strategies are proposed to deal with the current disadvantages.Hope that the readers are enlightened from this review to carry out further experiments better. | Jiefeng Zheng Yuanji Wu Yingjuan Sun Jianhua Rong Hongyan Li Li Niu | 2021 | Nano-Micro Letters2021，13，1： | 4 |
| 7 | One-Dimensional Magnetic FeCoNi Alloy Toward Low-Frequency Electromagnetic Wave Absorption显示文摘Rational designing of one-dimensional(1D)magnetic alloy to facilitate electromagnetic(EM)wave attenuation capability in low-frequency(2-6 GHz)microwave absorption field is highly desired but remains a significant challenge.In this study,a composite EM wave absorber made of a FeCoNi medium-entropy alloy embedded in a 1D carbon matrix framework is rationally designed through an improved electrospinning method.The 1D-shaped FeCoNi alloy embedded composite demonstrates the high-density and continuous magnetic network using off-axis electronic holography technique,indicating the excellent magnetic loss ability under an external EM field.Then,the in-depth analysis shows that many factors,including 1D anisotropy and intrinsic physical features of the magnetic medium-entropy alloy,primarily contribute to the enhanced EM wave absorption performance.Therefore,the fabricated EM wave absorber shows an increasing effective absorption band of 1.3 GHz in the low-frequency electromagnetic field at an ultrathin thickness of 2 mm.Thus,this study opens up a new method for the design and preparation of high-performance 1D magnetic EM absorbers. | Bintong Yang Jiefeng Fang Chunyang Xu Hui Cao Ruixuan Zhang Biao Zhao Mengqiu Huang Xiangyu Wang Hualiang Lv Renchao Che | 2022 | Nano-Micro Letters2022，14，10： | 4 |
| 8 | Repeated-batch Cultivation of Encapsulated Monascus purpureus by Polyelectrolyte Complex for Natural Pigment Production显示文摘In general,productions of natural pigment in submerged microorganism culture were much less than that in solid-state fermentation,because the solid-state culture can provide a support carrier for the mycelium. To improve natural pigment production,the cultivation of Monascus purpureus in submerged encapsulated cell was investigated. Monascus purpureus immobilized in polyelectrolyte complex(PEC) microcapsules,which were pre-pared by sodium cellulose sulphate(NaCS) and poly-dimethyl-diallyl-ammonium chloride(PDMDAAC),was a good substitute for submerged cell culture because it mimicked the solid-state environment. The repeated-batch process with encapsulated cells was studied in flasks and a bubble column. The results indicated that the bubble column was more suitable for the encapsulation culture than the shaking flasks because of its good mass transfer performance and minor shear stress on cells. Owing to the protection of the microcapsule's membrane,Monascus purpureus in microcapsules increased approximately three times over that in free cell culture with negligible cell leakage to the medium. The pigment production in the bubble column finally reached 3.82(OD500) ,which was two times higher than in free cell culture. In addition,the duration of each batch was shortened to 15% of that in free cell culture. | LIU Jiefeng REN Yiran YAO Shanjing | 2010 | Chinese Journal of Chemical Engineering2010，18，6： | 4 |
| 9 | Analysis of the factors affecting thermal evolution of hot rolled steel during coil cooling显示文摘The thermal evolution of steel coil during cooling was simulated and investigated by the use of in-house Q-CSP? software.The dependence of the thermal evolution of steel coil on cooling methods, temperature distribution of the strip before coiling, coil sizeand steel grades was also discussed. The study plays a significant role in helping steel makers to better understand and control thecooling process. | Jiefeng Cheng Zhengdong Liu Han Dong Yong Gan | 2006 | Journal of University of Science and Technology Beijing2006，13，2： | 3 |
| 10 | Activation of Piezo1 contributes to matrix stiffness-induced angiogenesis in hepatocellular carcinoma显示文摘Background:Despite integrin being highlighted as a stiffness-sensor molecule in matrix stiffness-driven angiogenesis,other stiffness-sensor molecules and their mechanosensory pathways related to angiogenesis in hepatocellular carcinoma(HCC)remain obscure.Here,we explored the interplay between Piezo1 and integrinβ1 in the mechanosensory pathway and their effects on HCC angiogenesis to better understand matrix stiffness-induced angiogenesis.Methods:The role of Piezo1 in matrix stiffness-induced angiogenesis was investigated using orthotopic liver cancer SD rat models with high liver stiffness background,and its clinical significance was evaluated in human HCC tissues.Matrix stiffness-mediated Piezo1 upregulation and activation were assayed using an in vitro fibronectin(FN)-coated cell culture system with different stiffness,Western blotting and Ca^(2+)probe.The effects of shPiezo1-conditioned medium(CM)on angiogenesis were examined by tube formation assay,wound healing assay and angiogenesis array.The underlying mechanism by which Piezo1 participated in matrix stiffness-induced angiogenesis was analyzed by microRNA quantitative real-time polymerase chain reaction(qRT-PCR),matrix stiffness measurement,dual-luciferase reporter assay,ubiquitination assay and co-immunoprecipitation.Results:Increased matrix stiffness significantly upregulated Piezo1 expression at both cellular and tissue levels,and high expression of Piezo1 indicated an unfavorable prognosis.High matrix stiffness also noticeably enhanced the activation level of Piezo1,similar to its expression level.Piezo1 knockdown significantly suppressed tumor growth,angiogenesis,and lung metastasis of HCC rat models with high liver stiffness background.shPiezo1-CM from HCC cells attenuated tube formation and migration abilities of vascular endothelial cells remarkably,and analysis of differentially expressed pro-angiogenic factors revealed that Piezo1 promoted the expression and secretion of vascular endothelial growth factor(VEGF),CXC chemokine ligand 16(CXCL16)and insulin-like growth factor binding protein 2(IGFBP2).Matrix stiffness-caused Piezo1 upregulation/activation restrained hypoxia inducible factor-1α(HIF-1α)ubiquitination,subsequently enhanced the expression of downstream pro-angiogenic factors to accelerate HCC angiogenesis.Besides,collagen 1(COL1)-reinforced tissue stiffening resulted in more expression of Piezo1 via miR-625-5p.Conclusions:This study unravels a new mechanism by which the inte-grinβ1/Piezo1 activation/Ca2+influx/HIF-1αubiquitination/VEGF,CXCL16 and IGFBP2 pathway participates in matrix stiffness-driven HCC angiogenesis.Simultaneously,a positive feedback regulation loop as stiff matrix/integrinβ1/miR-625-5p/Piezo1 and COL1/stiffer matrix mediates matrix stiffness-caused Piezo1 upregulation. | Miao Li Xi Zhang Mimi Wang Yaohui Wang Jiali Qian Xiaoxia Xing Zhiming Wang Yang You Kun Guo Jie Chen Dongmei Gao Yan Zhao Lan Zhang Rongxin Chen Jiefeng Cui Zhenggang Ren | 2022 | Cancer Communications2022，42，11： | 3 |
| 11 | Control measures during the COVID-19 outbreak reduced the transmission of hand,foot,and mouth disease显示文摘Control measures during the coronavirus disease 2019(COVID-19)outbreak may have limited the spread of infectious diseases.This study aimed to analyze the impact of COVID-19 on the spread of hand,foot,and mouth disease(HFMD)in China.A mathematical model was established to fit the reported data of HFMD in six selected cities in China's Mainland from 2015 to 2020.The absolute difference(AD)and relative difference(RD)between the reported incidence in 2020,and simulated maximum,minimum,or median incidence of HFMD in 2015-2019 were calculated.The incidence and R effof HFMD have decreased in six selected cities since the outbreak of COVID-19,and in the second half of 2020,the incidence and R effof HFMD have rebounded.The results show that the total attack rate(TAR)in 2020 was lower than the maximum,minimum,and median TAR fitted in previous years in six selected cities(except Changsha City).For the maximum,median,minimum fitted TAR,the range of RD(%)is 42·20-99·20%,36·35-98·41%48·35-96·23%(except Changsha City)respectively.The preventive and control measures of COVID-19 have significantly contributed to the containment of HFMD transmission. | Yan Niu Li Luo Jia Rui Shiting Yang Bin Deng Zeyu Zhao Shengnan Lin Jingwen Xu Yuanzhao Zhu Yao Wang Meng Yang Xingchun Liu Tianlong Yang Weikang Liu Peihua Li Zhuoyang Li Chan Liu Jiefeng Huang Tianmu Chen | 2021 | Journal of Safety Science and Resilience2021，2，2： | 3 |
| 12 | The Significance of MMP-9 Over MMP-2 in HCC Invasiveness and Recurrence of Hepatocellular Carcinoma After Curative Resection显示文摘 | Rongxin Chen Jiefeng Cui Changde Xu Tongchun Xue Kun Guo Dongmei Gao Yinkun Liu Shenglong Ye Zhenggang Ren | 2012 | Annals of Surgical Oncology2012，，3： | 2 |
| 13 | Separation of mixed salts(Cl-/SO42-) by ED based on monovalent anion selective membranes显示文摘The industrial products or wastewater rich in the mixed salts(Cl-/SO4^2-) not only causes the environmental damage, but also induces waste of resource. In this study, an ED stack with monovalent selective AEMs and conventional CEMs was employed to separate the Cl-and SO42-from simulated wastewater. The effect of current density and mass fraction percentage was investigated in order to optimize the experimental conditions during ED process. It was found that at a concentration ratio between NaCl and Na2SO4 of 95/5(wt%/wt%) and a current density of40 m A·cm^-2, a current efficiency of 72%, an energy consumption of 1.6 k W·h·kg^-1 Na Cl and a Cl-/SO4^2-concentration(67.5/3.5 g·L^-1) were obtained. Hence, it is appropriate and effective to separate Cl-and SO42-by ED using the monovalent selective AEMs. | Jiefeng Pan Wei Zhang Huimin Ruan Jiangnan Shen Congjie Gao | 2019 | Chinese Journal of Chemical Engineering2019，27，4： | 2 |
| 14 | Drop casting based superhydrophobic and electrically conductive coating for high performance strain sensing显示文摘Conductive polymer composites(CPCs)strain sensors exhibit promising applications in flexible electronics,people’s health monitoring,etc.It remains a big challenge to develop a simple and cost-effective method to prepare CPCs with high conductivity,corrosion resistance,strong interfacial adhesion and high sensitivity.Here,we propose a facile“drop-casting and fluorination”strategy to fabricate superhydrophobic and highly electrically conductive coating by Ag precursor adsorption onto a commercially available elastic tape,subsequent chemical reduction and final fluorination.The Ag nanoparticles could not only construct the electrically conductive network but also greatly enhance the surface roughness.The contact angle and electrical conductivity of the coating can reach as high as 156°and 126 S/cm,respectively.When used for strain sensing,the superhydrophobic and conductive coating shows a high gauger factor(up to 7631 with the strain from 44%to 50%)and outstanding recyclability.The strain sensor could monitor different body joint motions with the stable and reliable sensing signals even after long time treatment in a corrosive solution. | Ling Wang Lisheng Wu Yuqing Wang Junchen Luo Huaiguo Xue Jiefeng Gao | 2022 | Nano Materials Science2022，4，2： | 2 |
| 15 | Polarization loss analysis and ageing characterisation of transformer oil-immersed insulation by using decoupled frequency domain spectroscopy显示文摘The polarization information contained in the frequency-domain spectroscopy(FDS)could be utilised for characterising the ageing degree of transformer oil-immersed insulation.However,the polarization information will be obscured by its conductance effect,it is thus hard to analyse the polarization behaviour by using the traditional FDS technique.Given this issue,an alternative approach is proposed to analyse the polari-zation information using FDS decoupled by logarithmic-derivative spectroscopy(LDS).Findings proved that the polarization loss information generated by polarization behaviour can be separated from the total dispersion loss.The proposed feature pa-rameters are later used to analyse the polarization loss information under ageing impact.Also,the polarization loss surface is constructed by using these feature parameters to characterise the ageing degrees of oil-immersed samples.Finally,the potential possibility of using the proposed method to analyse the polarization loss and ageing degree are respectively discussed. | Xianhao Fan Jiefeng Liu Yiyi Zhang Zheshi Ding Qingyin Wang | 2022 | High Voltage2022，7，3： | 2 |
| 16 | Learning deep representations for semantic image parsing: a comprehensive overview显示文摘 | Lili HUANG Jiefeng PENG Ruimao ZHANG Guanbin LI Liang LIN | 2018 | Frontiers of Computer Science2018，12，5： | 2 |
| 17 | Measurement of air exchange rates in different indoor environments using continuous CO_2 sensors显示文摘A new air exchange rate(AER) monitoring method using continuous CO 2 sensors was developed and validated through both laboratory experiments and field studies.Controlled laboratory simulation tests were conducted in a 1-m 3 environmental chamber at different AERs(0.1-10.0 hr 1).AERs were determined using the decay method based on box model assumptions.Field tests were conducted in classrooms,dormitories,meeting rooms and apartments during 2-5 weekdays using CO 2 sensors coupled with data loggers.Indoor temperature,relative humidity(RH),and CO 2 concentrations were continuously monitored while outdoor parameters combined with on-site climate conditions were recorded.Statistical results indicated that good laboratory performance was achieved:duplicate precision was within 10%,and the measured AERs were 90%-120% of the real AERs.Average AERs were 1.22,1.37,1.10,1.91 and 0.73 hr 1 in dormitories,air-conditioned classrooms,classrooms with an air circulation cooling system,reading rooms,and meeting rooms,respectively.In an elderly particulate matter exposure study,all the homes had AER values ranging from 0.29 to 3.46 hr 1 in fall,and 0.12 to 1.39 hr 1 in winter with a median AER of 1.15. | Yan You Can Niu Jian Zhou Yating Liu Zhipeng Bai Jiefeng Zhang Fei He Nan Zhang | 2012 | Journal of Environmental Sciences2012，24，4： | 2 |
| 18 | PD-1 Involvement in Peripheral Blood CD8+T Lymphocyte Dysfunction in Patients with Acute-on-chronic Liver Failure显示文摘Background and Aims:Programmed cell death-1(PD-1)plays an important role in downregulating T lymphocytes but the mechanisms are still poorly understood.This study aimed to explore the role of PD-1 in CD8^(+)T lymphocyte dysfunction in hepatitis B virus(HBV)-related acute-on-chronic liver failure(ACLF).Methods:Thirty patients with HBV-ACLF and 30 healthy controls(HCs)were recruited.The differences in the numbers and functions of CD8^(+)T lymphocytes,PD-1 and glucose transporter-1(Glut1)expression from the peripheral blood of patients with HBV-ACLF and HCs were analyzed.In vitro,the CD8^(+)T lymphocytes from HCs were cultured(HC group)and the CD8^(+)T lymphocytes from ACLF patients were cultured with PD-L1-IgG(ACLF+PD-1 group)or IgG(ACLF group).The numbers and functions of CD8^(+)T lymphocytes,PD-1 expression,glycogen uptake capacity,and Glut1,hexokinase-2(HK2),and pyruvate kinase(PKM2)expression were analyzed among the HC group,ACLF group and ACLF+PD-1group.Results:The absolute numbers of CD8^(+)T lymphocytes in the peripheral blood from patients with HBVACLF were lower than in the HCs(p<0.001).The expression of PD-1 in peripheral blood CD8^(+)T lymphocytes was lower in HCs than in patients with HBV-ACLF(p=0.021).Compared with HCs,PD-1 expression was increased(p=0.021)and Glut1 expression was decreased(p=0.016)in CD8^(+)T lymphocytes from the HBV-ACLF group.In vitro,glycogen uptake and functions of ACLF CD8^(+)T lymphocytes were significantly lower than that in HCs(p=0.017;all p<0.001).When PD-1/PD-L1 was activated,the glycogen uptake rate and expression levels of Glut1,HK2,and PKM2 showed a decreasing trend(ACLF+PD-1 group compared to ACLF group,all p<0.05).The functions of CD8^(+)T lymphocytes in the ACLF+PD-1 group[using biomarkers of Ki67,CD69,IL-2,interferon-gamma,and tumor necrosis factor-alpha-were lower than in the ACLF group(all p<0.05).Conclusions:CD8^(+)T lymphocyte dysfunction is observed in patients with HBV-ACLF.PD-1-induced T lymphocyte dysfunction might involve glycolysis inhibition. | Xiaoshuang Zhou Yidong Li Yaqiu Ji Tian Liu Ninghui Zhao Jiefeng He Jia Yao | 2021 | Journal of Clinical and Translational Hepatology2021，9，3： | 2 |
| 19 | High Capacity and Fast Kinetics of Potassium‑Ion Batteries Boosted by Nitrogen‑Doped Mesoporous Carbon Spheres显示文摘In view of rich potassium resources and their working potential,potassium-ion batteries(PIBs)are deemed as next generation rechargeable batteries.Owing to carbon materials with the preponderance of durability and economic price,they are widely employed in PIBs anode materials.Currently,porosity design and heteroatom doping as efficacious improvement strategies have been applied to the structural design of carbon materials to improve their electrochemical performances.Herein,nitrogen-doped mesoporous carbon spheres(MCS)are synthesized by a facile hard template method.The MCS demonstrate larger interlayer spacing in a short range,high specific surface area,abundant mesoporous structures and active sites,enhancing K-ion migration and diffusion.Furthermore,we screen out the pyrolysis temperature of 900°C and the pore diameter of 7 nm as optimized conditions for MCS to improve performances.In detail,the optimized MCS-7-900 electrode achieves high rate capacity(107.9 mAh g^(−1) at 5000 mA g^(−1))and stably brings about 3600 cycles at 1000 mA g^(−1).According to electrochemical kinetic analysis,the capacitive-controlled effects play dominant roles in total storage mechanism.Additionally,the full-cell equipped MCS-7-900 as anode is successfully constructed to evaluate the practicality of MCS. | Jiefeng Zheng Yuanji Wu Yong Tong Xi Liu Yingjuan Sun Hongyan Li Li Niu | 2021 | Nano-Micro Letters2021，13，11： | 2 |
| 20 | Superhydrophobic self-extinguishing cotton fabrics for electromagnetic interference shielding and human motion detection显示文摘Multifunctional intelligent fire-safe cotton fabric promises next-generation fire-fighting uniform and sen-sor applications.However,cotton fabrics’hygroscopicity and intrinsic flammability significantly impede their potential applications in industries.Herein,we report a superhydrophobic fireproof cotton fabric(PEI-APP-PEI-MXene)generated via sequential layer-by-layer deposition of polyethyleneimine(PEI),am-monium polyphosphate(APP),and titanium carbide(MXene),followed by hydrophobic treatment with silicone elastomer.Compared to untreated cotton,the treated cotton fabric with 10 polymolecular layers exhibits∼43%and∼42%reductions in the peak heat release rate and total heat release,respectively,a desired UL-94 V-0 rating,and a high limiting oxygen index(LOI)value of 39.5 vol.%.In addition to that,the treated fabrics displayed improved electromagnetic interference(EMI)shielding and motion-sensing abilities.The presented work provides a facile and effective surface modification approach to generate multifunctional cotton fabrics with promising practical applications. | Lei Liu Zhewen Ma Menghe Zhu Lina Liu Jinfeng Dai Yongqian Shi Jiefeng Gao Toan Dinh Thanh Nguyen Long-Cheng Tang Pingan Song | 2023 | Journal of Materials Science & Technology2023，，1： | 2 |
您所在的机构暂未开通此部分的功能，请联系管理员