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Highly Thermoconductive,Strong Graphene‑Based Composite Films by Eliminating Nanosheets Wrinkles 被引量:2
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作者 Guang Xiao hao li +2 位作者 Zhizhou Yu haoting Niu Yagang Yao 《Nano-Micro Letters》 SCIE EI CAS CSCD 2024年第1期328-340,共13页
Graphene-based thermally conductive composites have been proposed as effective thermal management materials for cooling high-power electronic devices.However,when flexible graphene nanosheets are assembled into macros... Graphene-based thermally conductive composites have been proposed as effective thermal management materials for cooling high-power electronic devices.However,when flexible graphene nanosheets are assembled into macroscopic thermally conductive composites,capillary forces induce shrinkage of graphene nanosheets to form wrinkles during solution-based spontaneous drying,which greatly reduces the thermal conductivity of the composites.Herein,graphene nanosheets/aramid nanofiber(GNS/ANF)composite films with high thermal conductivity were prepared by in-plane stretching of GNS/ANF composite hydrogel networks with hydrogen bonds andπ-πinteractions.The in-plane mechanical stretching eliminates graphene nanosheets wrinkles by suppressing inward shrinkage due to capillary forces during drying and achieves a high in-plane orientation of graphene nanosheets,thereby creating a fast in-plane heat transfer channel.The composite films(GNS/ANF-60 wt%)with eliminated graphene nanosheets wrinkles showed a significant increase in thermal conductivity(146 W m^(−1)K^(−1))and tensile strength(207 MPa).The combination of these excellent properties enables the GNS/ANF composite films to be effectively used for cooling flexible LED chips and smartphones,showing promising applications in the thermal management of high-power electronic devices. 展开更多
关键词 GRAPHENE Aramid nanofiber Wrinkles elimination In-plane stretching Thermal conductivity
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Biomass-enhanced Janus sponge-like hydrogel with salt resistance and highstrength for efficient solar desalination 被引量:1
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作者 Aqiang Chu Meng Yang +4 位作者 Juanli Chen Jinmin Zhao Jing Fang Zhensheng Yang hao li 《Green Energy & Environment》 SCIE EI CAS CSCD 2024年第11期1698-1710,共13页
Interfacial solar-driven evaporation technology shows great potential in the field of industrial seawater desalination, and the development ofefficient and low-cost evaporation materials is key to achieving large-scale ... Interfacial solar-driven evaporation technology shows great potential in the field of industrial seawater desalination, and the development ofefficient and low-cost evaporation materials is key to achieving large-scale applications. Hydrogels are considered to be promising candidates;however, conventional hydrogel-based interfacial solar evaporators have difficulty in simultaneously meeting multiple requirements, including ahigh evaporation rate, salt resistance, and good mechanical properties. In this study, a Janus sponge-like hydrogel solar evaporator (CPAS) withexcellent comprehensive performance was successfully constructed. The introduction of biomass agar (AG) into the polyvinyl alcohol (PVA)hydrogel backbone reduced the enthalpy of water evaporation, optimized the pore structure, and improved the mechanical properties. Meanwhile, by introducing hydrophobic fumed nano-silica aerogel (SA) and a synergistic foaming-crosslinking process, the hydrogel spontaneouslyformed a Janus structure with a hydrophobic surface and hydrophilic bottom properties. Based on the reduction of the evaporation enthalpy andthe modulation of the pore structure, the CPAS evaporation rate reached 3.56 kg m^(-2) h^(-1) under one sun illumination. Most importantly, owingto the hydrophobic top surface and 3D-interconnected porous channels, the evaporator could work stably in high concentrations of salt-water(25 wt% NaCl), showing strong salt resistance. Efficient water evaporation, excellent salt resistance, scalable preparation processes, and low-costraw materials make CPAS extremely promising for practical applications. 展开更多
关键词 Solar interfacial evaporation HYDROGEL Biomass DESALINATION Salt resistance
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A dynamic database of solid-state electrolyte(DDSE)picturing all-solid-state batteries 被引量:1
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作者 Fangling Yang Egon Campos dos Santos +5 位作者 Xue Jia Ryuhei Sato Kazuaki Kisu Yusuke Hashimoto Shin-ichi Orimo hao li 《Nano Materials Science》 EI CAS CSCD 2024年第2期256-262,共7页
All-solid-state batteries(ASSBs)are a class of safer and higher-energy-density materials compared to conventional devices,from which solid-state electrolytes(SSEs)are their essential components.To date,investigations ... All-solid-state batteries(ASSBs)are a class of safer and higher-energy-density materials compared to conventional devices,from which solid-state electrolytes(SSEs)are their essential components.To date,investigations to search for high ion-conducting solid-state electrolytes have attracted broad concern.However,obtaining SSEs with high ionic conductivity is challenging due to the complex structural information and the less-explored structure-performance relationship.To provide a solution to these challenges,developing a database containing typical SSEs from available experimental reports would be a new avenue to understand the structureperformance relationships and find out new design guidelines for reasonable SSEs.Herein,a dynamic experimental database containing>600 materials was developed in a wide range of temperatures(132.40–1261.60 K),including mono-and divalent cations(e.g.,Li^(+),Na^(+),K^(+),Ag^(+),Ca^(2+),Mg^(2+),and Zn^(2+))and various types of anions(e.g.,halide,hydride,sulfide,and oxide).Data-mining was conducted to explore the relationships among different variates(e.g.,transport ion,composition,activation energy,and conductivity).Overall,we expect that this database can provide essential guidelines for the design and development of high-performance SSEs in ASSB applications.This database is dynamically updated,which can be accessed via our open-source online system. 展开更多
关键词 Solid-state electrolyte(SSE) All-solid-state battery(ASSB) Ionic conductivity Dynamic database Machine learning
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Fine mapping and characterization of stripe rust resistance gene YrAYH in near-isogenic lines derived from a cross involving wheat landrace Anyuehong 被引量:1
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作者 li Long Jue li +19 位作者 linyu Huang Huiling Jin Fangnian Guan Haipeng Zhang Sasa Zhao hao li Zhien Pu Wei li Qiantao Jiang Yuming Wei Jian Ma Houyang Kang Shoufen Dai Pengfei Qi Qiang Xu Mei Deng Youliang Zheng Yunfeng Jiang Matthew James Moscou Guoyue Chen 《The Crop Journal》 SCIE CSCD 2024年第3期826-835,共10页
Stripe rust,caused by Puccinia striiformis f.sp.tritici(Pst),is a devastating disease in wheat worldwide.Discovering and characterizing new resistance genes/QTL is crucial for wheat breeding programs.In this study,we ... Stripe rust,caused by Puccinia striiformis f.sp.tritici(Pst),is a devastating disease in wheat worldwide.Discovering and characterizing new resistance genes/QTL is crucial for wheat breeding programs.In this study,we fine-mapped and characterized a stripe rust resistance gene,YRAYH,on chromosome arm 5BL in the Chinese wheat landrace Anyuehong(AYH).Evaluations of stripe rust response to prevalent Chinese Pst races in near-isogenic lines derived from a cross of Anyuehong and Taichung 29 showed that YrAYH conferred a high level of resistance at all growth stages.Fine mapping using a large segregating population of 9748 plants,narrowed the YRAYH locus to a 3.7 Mb interval on chromosome arm 5BL that included 61 annotated genes.Transcriptome analysis of two NIL pairs identified 64 upregulated differentially expressed genes(DEGs)in the resistant NILs(NILs-R).Annotations indicated that many of these genes have roles in plant disease resistance pathways.Through a combined approach of fine-mapping and transcriptome sequencing,we identified a serine/threonine-protein kinase SRPK as a candidate gene underlying YrAYH.A unique 25 bp insertion was identified in the NILs-R compared to the NILs-S and previously published wheat genomes.An InDel marker was developed and co-segregated with YrAYH.Agronomic trait evaluation of the NILs suggested that YrAYH not only reduces the impact of stripe rust but was also associated with a gene that increases plant height and spike length. 展开更多
关键词 Candidate gene analysis Crop protection Puccinia striiformis Transcriptome analyses
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High-dose dexamethasone regulates microglial polarization via the GR/JAK1/STAT3 signaling pathway after traumatic brain injury
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作者 Mengshi Yang Miao Bai +10 位作者 Yuan Zhuang Shenghua Lu Qianqian Ge hao li Yu Deng Hongbin Wu Xiaojian Xu Fei Niu Xinlong Dong Bin Zhang Baiyun liu 《Neural Regeneration Research》 SCIE CAS 2025年第9期2611-2623,共13页
Although microglial polarization and neuroinflammation are crucial cellular responses after traumatic brain injury,the fundamental regulatory and functional mechanisms remain insufficiently understood.As potent anti-i... Although microglial polarization and neuroinflammation are crucial cellular responses after traumatic brain injury,the fundamental regulatory and functional mechanisms remain insufficiently understood.As potent anti-inflammato ry agents,the use of glucoco rticoids in traumatic brain injury is still controversial,and their regulatory effects on microglial polarization are not yet known.In the present study,we sought to determine whether exacerbation of traumatic brain injury caused by high-dose dexamethasone is related to its regulatory effects on microglial polarization and its mechanisms of action.In vitro cultured BV2 cells and primary microglia and a controlled cortical impact mouse model were used to investigate the effects of dexamethasone on microglial polarization.Lipopolysaccharide,dexamethasone,RU486(a glucocorticoid receptor antagonist),and ruxolitinib(a Janus kinase 1 antagonist)were administered.RNA-sequencing data obtained from a C57BL/6 mouse model of traumatic brain injury were used to identify potential targets of dexamethasone.The Morris water maze,quantitative reverse transcription-polymerase chain reaction,western blotting,immunofluorescence and confocal microscopy analysis,and TUNEL,Nissl,and Golgi staining were performed to investigate our hypothesis.High-throughput sequencing results showed that arginase 1,a marker of M2 microglia,was significantly downregulated in the dexamethasone group compared with the traumatic brain injury group at3 days post-traumatic brain injury.Thus dexamethasone inhibited M1 and M2 microglia,with a more pronounced inhibitory effect on M2microglia in vitro and in vivo.Glucocorticoid receptor plays an indispensable role in microglial polarization after dexamethasone treatment following traumatic brain injury.Additionally,glucocorticoid receptor activation increased the number of apoptotic cells and neuronal death,and also decreased the density of dendritic spines.A possible downstream receptor signaling mechanism is the GR/JAK1/STAT3 pathway.Overactivation of glucocorticoid receptor by high-dose dexamethasone reduced the expression of M2 microglia,which plays an antiinflammatory role.In contrast,inhibiting the activation of glucocorticoid receptor reduced the number of apoptotic glia and neurons and decreased the loss of dendritic spines after traumatic brain injury.Dexamethasone may exe rt its neurotoxic effects by inhibiting M2 microglia through the GR/JAK1/STAT3 signaling pathway. 展开更多
关键词 apoptosis BV2 microglia DEXAMETHASONE glucocorticoid receptor GLUCOCORTICOIDS innate immune system microglial polarization neuroinflammation primary microglia traumatic brain injury
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Bioengineered skin organoids:from development to applications
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作者 Zi-Xuan Hong Shun-Tian Zhu +5 位作者 hao li Jing-Zhi Luo Yu Yang Yang An Xi Wang Kai Wang 《Military Medical Research》 SCIE CAS CSCD 2024年第3期449-466,共18页
Signifcant advancements have been made in recent years in the development of highly sophisticated skin organoids.Serving as three-dimensional(3D)models that mimic human skin,these organoids have evolved into complex s... Signifcant advancements have been made in recent years in the development of highly sophisticated skin organoids.Serving as three-dimensional(3D)models that mimic human skin,these organoids have evolved into complex structures and are increasingly recognized as efective alternatives to traditional culture models and human skin due to their ability to overcome the limitations of two-dimensional(2D)systems and ethical concerns.The inherent plasticity of skin organoids allows for their construction into physiological and pathological models,enabling the study of skin development and dynamic changes.This review provides an overview of the pivotal work in the progression from 3D layered epidermis to cyst-like skin organoids with appendages.Furthermore,it highlights the latest advancements in organoid construction facilitated by state-of-the-art engineering techniques,such as 3D printing and microfuidic devices.The review also summarizes and discusses the diverse applications of skin organoids in developmental biology,disease modelling,regenerative medicine,and personalized medicine,while considering their prospects and limitations. 展开更多
关键词 Skin organoid Organoid generation Skin appendage Tissue engineering Disease modelling Regenerative medicine
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Crosstalk among Oxidative Stress,Autophagy,and Apoptosis in the Protective Effects of Ginsenoside Rb1 on Brain Microvascular Endothelial Cells:A Mixed Computational and Experimental Study
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作者 Yi-miao LUO Shu-sen liU +5 位作者 Ming Zhao Wei WEI Jiu-xiu YAO Jia-hui SUN Yu CAO hao li 《Current Medical Science》 SCIE CAS 2024年第3期578-588,共11页
Objective Brain microvascular endothelial cells (BMECs) were found to shift from their usually inactive state to an active state in ischemic stroke (IS) and cause neuronal damage. Ginsenoside Rb1 (GRb1),a component de... Objective Brain microvascular endothelial cells (BMECs) were found to shift from their usually inactive state to an active state in ischemic stroke (IS) and cause neuronal damage. Ginsenoside Rb1 (GRb1),a component derived from medicinal plants,is known for its pharmacological benefits in IS,but its protective effects on BMECs have yet to be explored. This study aimed to investigate the potential protective effects of GRb1 on BMECs. Methods An in vitro oxygen-glucose deprivation/reperfusion (OGD/R) model was established to mimic ischemia-reperfusion (I/R) injury. Bulk RNA-sequencing data were analyzed by using the Human Autophagy Database and various bioinformatic tools,including gene set enrichment analysis (GSEA),Gene Ontology (GO) classification and enrichment analysis,Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis,protein-protein interaction network analysis,and molecular docking. Experimental validation was also performed to ensure the reliability of our findings. Results Rb1 had a protective effect on BMECs subjected to OGD/R injury. Specifically,GRb1 was found to modulate the interplay between oxidative stress,apoptosis,and autophagy in BMECs. Key targets such as sequestosome 1 (SQSTM1/p62),autophagy related 5 (ATG5),and hypoxia-inducible factor 1-alpha (HIF-1α) were identified,highlighting their potential roles in mediating the protective effects of GRb1 against IS-induced damage. Conclusion GRbl protects BMECs against OGD/R injury by influencing oxidative stress,apoptosis,and autophagy. The identification of SQSTM1/p62,ATG5,and HIF-1α as promising targets further supports the potential of GRb1 as a therapeutic agent for IS,providing a foundation for future research into its mechanisms and applications in IS treatment. 展开更多
关键词 ischemic stroke ginsenoside Rb1 brain microvascular endothelial cells oxidative stress AUTOPHAGY APOPTOSIS bioinformatic analysis
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Genome-wide and candidate gene association studies identify BnPAP17 as conferring the utilization of organic phosphorus in oilseed rape
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作者 Ping Xu hao li +6 位作者 Haiyuan li Ge Zhao Shengjie Dai Xiaoyu Cui Zhenning liu Lei Shi Xiaohua Wang 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2024年第4期1134-1149,共16页
Phosphorus(P)is essential for living plants,and P deficiency is one of the key factors limiting the yield in rapeseed production worldwide.As the most important organ for plants,root morphology traits(RMTs)play a key ... Phosphorus(P)is essential for living plants,and P deficiency is one of the key factors limiting the yield in rapeseed production worldwide.As the most important organ for plants,root morphology traits(RMTs)play a key role in P absorption.To investigate the genetic variability of RMT under low P availability,we dissected the genetic structure of RMTs by genome-wide association studies(GWAS),linkage mapping and candidate gene association studies(CGAS).A total of 52 suggestive loci were associated with RMTs under P stress conditions in 405 oilseed rape accessions.The purple acid phosphatase gene BnPAP17 was found to control the lateral root number(LRN)and root dry weight(RDW)under low P stress.The expression of BnPAP17 was increased in shoot tissue in P-efficient cultivars compared to root tissue and P-inefficient cultivars in response to low P stress.Moreover,the haplotype of BnPAP17^(Hap3)was detected for the selective breeding of P efficiency in oilseed rape.Over-expression of the BnPAP17^(Hap3)could promote the shoot and root growth with enhanced tolerance to low P stress and organic phosphorus(Po)utilization in oilseed rape.Collectively,these findings increase our understanding of the mechanisms underlying BnPAP17-mediated low P stress tolerance in oilseed rape. 展开更多
关键词 genome-wide association studies(GWAS) root morphology traits(RMTs) organic phosphorus(Po) oilseed rape BnPAP17
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Mitigating Lattice Distortion of High‑Voltage LiCoO_(2)via Core‑Shell Structure Induced by Cationic Heterogeneous Co‑Doping for Lithium‑Ion Batteries
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作者 Zezhou lin Ke Fan +9 位作者 Tiancheng liu Zhihang Xu Gao Chen Honglei Zhang hao li Xuyun Guo Xi Zhang Ye Zhu Peiyu Hou Haitao Huang 《Nano-Micro Letters》 SCIE EI CSCD 2024年第3期169-182,共14页
Inactive elemental doping is commonly used to improve the structural stability of high-voltage layered transition-metal oxide cathodes.However,the one-step co-doping strategy usually results in small grain size since ... Inactive elemental doping is commonly used to improve the structural stability of high-voltage layered transition-metal oxide cathodes.However,the one-step co-doping strategy usually results in small grain size since the low diffusivity ions such as Ti^(4+)will be concentrated on grain boundaries,which hinders the grain growth.In order to synthesize large single-crystal layered oxide cathodes,considering the different diffusivities of different dopant ions,we propose a simple two-step multi-element co-doping strategy to fabricate core–shell structured LiCoO_(2)(CS-LCO).In the current work,the high-diffusivity Al^(3+)/Mg^(2+)ions occupy the core of single-crystal grain while the low diffusivity Ti^(4+)ions enrich the shell layer.The Ti^(4+)-enriched shell layer(~12 nm)with Co/Ti substitution and stronger Ti–O bond gives rise to less oxygen ligand holes.In-situ XRD demonstrates the constrained contraction of c-axis lattice parameter and mitigated structural distortion.Under a high upper cut-off voltage of 4.6 V,the single-crystal CS-LCO maintains a reversible capacity of 159.8 mAh g^(−1)with a good retention of~89%after 300 cycles,and reaches a high specific capacity of 163.8 mAh g^(−1)at 5C.The proposed strategy can be extended to other pairs of low-(Zr^(4+),Ta^(5+),and W6+,etc.)and high-diffusivity cations(Zn^(2+),Ni^(2+),and Fe^(3+),etc.)for rational design of advanced layered oxide core–shell structured cathodes for lithium-ion batteries. 展开更多
关键词 Lithium-ion battery LiCoO_(2) Heterogeneous co-doping Core-shell structure High-voltage stability
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Real-time Abnormal Detection of GWAC Light Curve based on Wavelet Transform Combined with GRU-Attention
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作者 hao li Qing Zhao +3 位作者 Long Shao Tao liu Chenzhou Cui Yunfei Xu 《Research in Astronomy and Astrophysics》 SCIE CAS CSCD 2024年第5期151-168,共18页
Nowadays, astronomy has entered the era of Time-Domain Astronomy, and the study of the time-varying light curves of various types of objects is of great significance in revealing the physical properties and evolutiona... Nowadays, astronomy has entered the era of Time-Domain Astronomy, and the study of the time-varying light curves of various types of objects is of great significance in revealing the physical properties and evolutionary history of celestial bodies. The Ground-based Wide Angle Cameras telescope, on which this paper is based, has observed more than 10 million light curves, and the detection of anomalies in the light curves can be used to rapidly detect transient rare phenomena such as microgravity lensing events from the massive data. However, the traditional statistically based anomaly detection methods cannot realize the fast processing of massive data. In this paper, we propose a Discrete Wavelet(DW)-Gate Recurrent Unit-Attention(GRU-Attention) light curve warning model. Wavelet transform has good effect on data noise reduction processing and feature extraction, which can provide richer and more stable input features for a neural network, and the neural network can provide more flexible and powerful output model for wavelet transform. Comparison experiments show an average improvement of 61% compared to the previous pure long-short-term memory unit(LSTM) model, and an average improvement of 53.5% compared to the previous GRU model. The efficiency and accuracy of anomaly detection in previous paper work are not good enough, the method proposed in this paper possesses higher efficiency and accuracy,which incorporates the Attention mechanism to find out the key parts of the light curve that determine the anomalies. These parts are assigned higher weights, and in the actual anomaly detection, the star is detected with83.35% anomalies on average, and the DW-GRU-Attention model is compared with the DW-LSTM model, and the detection result f1 is improved by 5.75% on average, while having less training time, thus providing valuable information and guidance for astronomical observation and research. 展开更多
关键词 methods data analysis-stars VARIABLES general-techniques PHOTOMETRIC
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Data-Driven Viewpoint for Developing Next-Generation Mg-Ion Solid-State Electrolytes
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作者 Fang-ling Yang Ryuhei Sato +5 位作者 Eric Jianfeng Cheng Kazuaki Kisu Qian Wang Xue Jia Shin-ichi Orimo hao li 《电化学(中英文)》 CAS 北大核心 2024年第7期38-49,共12页
Magnesium(Mg)is a promising alternative to lithium(Li)as an anode material in solid-state batteries due to its abundance and high theoretical volumetric capacity.However,the sluggish Mg-ion conduction in the lattice o... Magnesium(Mg)is a promising alternative to lithium(Li)as an anode material in solid-state batteries due to its abundance and high theoretical volumetric capacity.However,the sluggish Mg-ion conduction in the lattice of solidstate electrolytes(SSEs)is one of the key challenges that hamper the development of Mg-ion solid-state batteries.Though various Mg-ion SSEs have been reported in recent years,key insights are hard to be derived from a single literature report.Besides,the structure-performance relationships of Mg-ion SSEs need to be further unraveled to provide a more precise design guideline for SSEs.In this viewpoint article,we analyze the structural characteristics of the Mg-based SSEs with high ionic conductivity reported in the last four decades based upon data mining-we provide big-data-derived insights into the challenges and opportunities in developing next-generation Mg-ion SSEs. 展开更多
关键词 Data mining Magnesium-ion solid-state electrolytes All-solid-state batteries Magnesium-ion conductivity
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Unraveling the coordination behavior and transformation mechanism of Cr^(3+) in Fe–Cr redox flow battery electrolytes
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作者 Xiaojun Zhao Xinwei Niu +6 位作者 Xinyuan liu Chongchong Wu Xinyu Duan Zhiqi Ma Yan Xu hao li Weijie Yang 《Materials Reports(Energy)》 EI 2024年第2期54-63,共10页
Currently,the iron chromium redox flow battery(ICRFB)has become a research hotspot in the energy storage field owing to its low cost and easily-scaled-up.However,the activity of electrolyte is still ambiguous due to i... Currently,the iron chromium redox flow battery(ICRFB)has become a research hotspot in the energy storage field owing to its low cost and easily-scaled-up.However,the activity of electrolyte is still ambiguous due to its complicated solution environment.Herein,we performed a pioneering investigation on the coordination behavior and transformation mechanism of Cr^(3+)in electrolyte and prediction of impurity ions impact through quantum chemistry computations.Based on the structure and symmetry of electrostatic potential distribution,the activity of different Cr^(3+)complex ions is confirmed as[Cr(H2O)5Cl]^(2+)>[Cr(H2O)4Cl2]+>[Cr(H2O)6]^(3+).The transformation mechanism between[Cr(H2O)6]^(3+)and[Cr(H2O)5Cl]^(2+)is revealed.We find the metal impurity ions(especially Mg^(2+))can exacerbate the electrolyte deactivation by reducing the transformation energy barrier from[Cr(H2O)5Cl]^(2+)(24.38 kcal mol^(−1))to[Cr(H2O)6]^(3+)(16.23 kcal mol^(−1)).The solvent radial distribution and mean square displacement in different solvent environments are discussed and we conclude that the coordination configuration limits the diffusivity of Cr^(3+).This work provides new insights into the activity of electrolyte,laying a fundamental sense for the electrolyte in ICRFB. 展开更多
关键词 Fe-Cr redox flow battery COORDINATION ELECTROLYTE Quantum chemistry computation
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GO/HTPB composite liner for anti-migration of small molecules 被引量:4
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作者 hao li Jie Wei +3 位作者 Ya-nan Zhang Yu-bing Hu Wei Jiang Teng-yue Zhang 《Defence Technology(防务技术)》 SCIE EI CAS CSCD 2023年第4期156-165,共10页
Hydroxyl-terminated polybutadiene/toluene diisocyanate(HTPB/TDI)system is widely used in composite solid propellants.The migrations of plasticizers and water molecules from solid propellants and surrounding environmen... Hydroxyl-terminated polybutadiene/toluene diisocyanate(HTPB/TDI)system is widely used in composite solid propellants.The migrations of plasticizers and water molecules from solid propellants and surrounding environment to the inhibitor have always been the important issues.This study focuses on the preparation,characterization and anti-migration behavior of graphene oxide(GO)/HTPB nanocomposite liner.The GO/HTPB(GH)composite liners affect the migration of small molecules through a tighter cross-linked structure and weakening function of small molecule adsorption.The anti-migration performance of the liner at different temperatures was analyzed,and the influence of the added amount of GO on the anti-migration performance and adhesion performance was also systematically studied.The overall performance of the liner is optimized when the amount of GO filler is 0.3 wt%.After adding 0.3 wt%GO,the concentration of dioctyl sebacate(DOS)migrated into the liner is decreased by 23.28%,and the concentration of water molecules is decreased by 51.89%,indicating that the introduction of GO can significantly improve the anti-migration performance of the liner.In addition,the bond strength is greatly increased from 0.25 MPa to 0.95 MPa,which meets the application requirements of the current propellant system.This research provides an important way for the preparation of structure-function synergistic anti-migration composite liners. 展开更多
关键词 Graphene oxide LINER STRUCTURE-FUNCTION Anti-migration Bonding
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Lyophilized recombinant human brain natriuretic peptide for chronic heart failure:Effects on cardiac function and inflammation 被引量:6
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作者 Feng li hao li +2 位作者 Rong Luo Jia-Bao Pei Xue-Ying Yu 《World Journal of Clinical Cases》 SCIE 2023年第26期6066-6072,共7页
BACKGROUND Chronic heart failure(CHF)is a serious and prevalent condition characterized by impaired cardiac function and inflammation.Standard therapy for CHF has limitations,prompting the exploration of alternative t... BACKGROUND Chronic heart failure(CHF)is a serious and prevalent condition characterized by impaired cardiac function and inflammation.Standard therapy for CHF has limitations,prompting the exploration of alternative treatments.Recombinant human brain natriuretic peptide(BNP)has emerged as a potential therapy,with evidence suggesting that it can improve cardiac function and reduce inflammation in patients with CHF.However,further research is required to determine the efficacy and safety of lyophilized recombinant human BNP in CHF patients and its impact on microinflammatory status.This study aimed to investigate the effects of lyophilized recombinant human BNP therapy on CHF patients’cardiac function and microinflammatory status.AIM To investigate the effects of freeze-dried recombinant human BNP therapy on cardiac function and microinflammatory status in patients with CHF.METHODS In total,102 CHF patients admitted to our hospital from January 2021 to January 2022 were randomly assigned to control and observation groups(n=51 patients/group).The control patients were treated with standard HF therapy for 3 d,whereas the observational patients were injected with the recombinant human BNP for 3 d.Clinical efficacy,inflammatory factor levels,myocardial damage,cardiac function before and after the treatment,and adverse reactions during treatment were compared between the two groups.RESULTS The overall clinical efficacy was higher in the observation group than in the control group.Compared with baseline,serum hypersensitive C-reactive protein,N-terminal proBNP,and troponin I level,and physical,emotional,social,and economic scores were lower in both groups after treatment,with greater reductions in levels and scores noted in the observation group than in the control group.The overall incidence of adverse reactions in the observation group was not significantly different compared with that in the control group(P>0.05).CONCLUSION Freeze-dried recombinant human BNP therapy can improve heart function and enhance microinflammatory status,thereby improving overall quality of life without any obvious side effects.This therapy is safe and reliable. 展开更多
关键词 Chronic heart failure Lyophilized recombinant human brain natriuretic peptide Cardiac function Microinflammatory state
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Multidisciplinary discussion and management of synchronous colorectal liver metastases: A single center study in China 被引量:1
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作者 hao li Guo-li Gu +4 位作者 Song-Yan li Yang Yan Shi-Dong Hu Ze Fu Xiao-Hui Du 《World Journal of Gastrointestinal Oncology》 SCIE 2023年第9期1616-1625,共10页
BACKGROUND The multidisciplinary team(MDT)has been carried out in many large hospitals now.However,given the costs of time and money and with little strong evidence of MDT effectiveness being reported,critiques of MDT... BACKGROUND The multidisciplinary team(MDT)has been carried out in many large hospitals now.However,given the costs of time and money and with little strong evidence of MDT effectiveness being reported,critiques of MDTs persist.AIM To evaluate the effects of MDTs on patients with synchronous colorectal liver metastases and share our opinion on management of synchronous colorectal liver metastases.METHODS In this study we collected clinical data of patients with synchronous colorectal liver metastases from February 2014 to February 2017 in the Chinese People’s Liberation Army General Hospital and subsequently divided them into an MDT+group and an MDT-group.In total,93 patients in MDT+group and 169 patients in MDT-group were included totally.RESULTS Statistical increases in the rate of chest computed tomography examination(P=0.001),abdomen magnetic resonance imaging examination(P=0.000),and preoperative image staging(P=0.0000)were observed in patients in MDT+group.Additionally,the proportion of patients receiving chemotherapy(P=0.019)and curative resection(P=0.042)was also higher in MDT+group.Multivariable analysis showed that the population of patients assessed by MDT meetings had higher 1-year[hazard ratio(HR)=0.608,95%confidence interval(CI):0.398-0.931,P=0.022]and 5-year(HR=0.694,95%CI:0.515-0.937,P=0.017)overall survival.CONCLUSION These results proved that MDT management did bring patients with synchronous colorectal liver metastases more opportunities for comprehensive examination and treatment,resulting in better outcomes. 展开更多
关键词 Synchronous colorectal liver metastases Multidisciplinary team Imaging examination Treatment strategy Oncological outcome
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广东省中老年人心血管疾病知识获取行为现状分析
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作者 郝黎 张娇 +1 位作者 周煜 李敬华 《广东医学》 CAS 2024年第9期1203-1210,共8页
目的了解广东省中老年人心血管疾病知识的获取行为现状,为心血管疾病知识的有效传播提供有价值的参考依据。方法2023年9—10月,采用心血管疾病知识获取行为现状调查表,通过线下与线上相结合的方式对广东省中老年人进行调查分析。结果调... 目的了解广东省中老年人心血管疾病知识的获取行为现状,为心血管疾病知识的有效传播提供有价值的参考依据。方法2023年9—10月,采用心血管疾病知识获取行为现状调查表,通过线下与线上相结合的方式对广东省中老年人进行调查分析。结果调查共获取500份有效问卷,男女比例约为2∶3。认知情况分析得出,广东省中老年人心血管疾病知识平均总得分为12.8分(总分20分),处于中等水平;性别(Z=4.504,P<0.01)和居住地(Z=2.602,P<0.01)不同的中老年人心血管疾病知识总得分不同,差异具有统计学意义。获取行为情况分析得出,中老年人获取心血管疾病知识的首要动机是满足自身疾病防治需要,另有121人纯粹是无意间听到和看到,占比近1/4;医务人员是中老年人获取心血管疾病知识最信任且最普遍的渠道,其次是家人朋友、传统媒体和纸质资料,中老年人对新媒体的信任度不如传统媒体,但微信和百度作为利用率最高的新媒体,已非常接近传统媒体;健康信息太多且良莠不齐是困扰中老年人使用新媒体获取心血管疾病知识的主要问题;86.2%的中老年人认为获取的心血管疾病知识对他们有显著效用,并将其主要用于以饮食、作息、锻炼为代表的生活方式的健康化转变上;获取偏好情况分析得出,中老年人最为关注的心血管疾病知识类型是医疗相关信息和养生保健信息,占比分别为71.40%和71.2%;具体到心血管疾病知识的呈现形式上,中老年人最喜欢视频,其次是知识讲座和宣传手册。结论广东省中老年人心血管疾病知识处于中等水平,认知存在浅层化问题,性别与城乡差异是主要影响因素;疾病防治需求驱动该人群的知识获取,其中信息偶遇现象值得关注;新媒体虽逐渐成为信息获取渠道,但在信任度方面尚有待提升;此外,知识获取对该群体的赋能效用较显著,集中表现为生活方式的健康化转变。由此可见,中老年人心血管疾病知识科普仍大有可为。 展开更多
关键词 中老年人 心血管疾病知识 获取行为 现状分析
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我国糖尿病患者营养护理的文献计量学分析
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作者 郝莉 郑鑫 +1 位作者 袁媛 张好好 《天津护理》 2024年第4期450-455,共6页
目的:分析糖尿病患者营养护理的研究现状和热点,以期为糖尿病营养护理领域研究提供参考。方法:检索中国知网、万方、维普、PubMed和Web of Science数据库中收录的关于糖尿病营养护理的研究文献,采用Bicomb2.0软件进行文献计量学分析,通... 目的:分析糖尿病患者营养护理的研究现状和热点,以期为糖尿病营养护理领域研究提供参考。方法:检索中国知网、万方、维普、PubMed和Web of Science数据库中收录的关于糖尿病营养护理的研究文献,采用Bicomb2.0软件进行文献计量学分析,通过SPSS 25.0软件生成高频关键词聚类树状图。结果:共纳入文献1423篇(中文文献1380篇,英文文献43篇),获得高频关键词28个;通过共词聚类分析共得到5个研究热点,分别是饮食干预对提升糖尿病肾病及老年糖尿病患者营养状况和生活质量的研究,个体化营养护理对改善妊娠期糖尿病妊娠结局及减少并发症的研究,健康教育在糖尿病足患者营养护理中的作用,糖尿病合并肺结核患者的营养支持以及糖尿病合并胃癌、食管癌围手术期的肠内营养研究。结论:糖尿病患者营养护理领域日益受到关注,现已形成多个研究热点,临床护理人员可借鉴参考,进一步深入开展相关研究,完善糖尿病患者的营养管理策略。 展开更多
关键词 护理 糖尿病 营养 文献计量学 研究热点
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超大规格风电用连铸圆坯的氢含量控制
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作者 李文博 郝丽 +3 位作者 董诗朋 周胜刚 尹志强 张朝磊 《炼钢》 CAS 北大核心 2024年第4期80-84,90,共6页
针对直径大于等于800 mm的超大规格风电用连铸圆坯因氢含量高出现探伤不合缺陷的问题,通过检测原辅料水分、利用Hydris定氢仪探究全工序钢水氢含量的变化规律。结果表明,铸坯氢含量的主要来源是原辅料水分、炉气气氛潮湿、耐火材料不完... 针对直径大于等于800 mm的超大规格风电用连铸圆坯因氢含量高出现探伤不合缺陷的问题,通过检测原辅料水分、利用Hydris定氢仪探究全工序钢水氢含量的变化规律。结果表明,铸坯氢含量的主要来源是原辅料水分、炉气气氛潮湿、耐火材料不完全分解。为降低铸坯氢含量,提出了工艺改进措施:转炉吹炼8 min后应不加或加入水分含量较低的原辅料;LF精炼工序投入较少的原辅料;入VD工序前小渣量控制,破空后低速喂线,控制喂线数量及种类在较小范围;小火烘烤连铸中间包60 min,定期清理中间包透气孔。工艺优化后,VD到站钢水w(H)≤3.6×10^(-6),VD离站钢水w(H)≤0.77×10^(-6),连铸中间包首炉钢水w(H)≤2.0×10^(-6),第2炉w(H)≤1.6×10^(-6),连浇炉次w(H)≤1.1×10^(-6),成功降低了超大规格风电用连铸圆坯的氢含量,保证了成品锻件的质量。 展开更多
关键词 氢含量 探伤 连铸圆坯 原辅料
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中医护理干预在1、2期压力性损伤中的应用研究进展
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作者 李学艳 裴晓璐 +9 位作者 姚卫海 彭伟 郭桂明 郝丽 林晓烁 王桂倩 关丽 王爽 范亚楠 白京华 《北京中医药》 2024年第4期434-437,共4页
压力性损伤主要是发生在皮肤和(或)潜在皮下软组织的局限性损伤,是卧床、行动不便或活动受限等患者临床最常见的并发症之一,严重降低患者的生存及生活质量。中医护理干预对患者的病情控制、生活质量提升具有积极影响。采取情志、饮食、... 压力性损伤主要是发生在皮肤和(或)潜在皮下软组织的局限性损伤,是卧床、行动不便或活动受限等患者临床最常见的并发症之一,严重降低患者的生存及生活质量。中医护理干预对患者的病情控制、生活质量提升具有积极影响。采取情志、饮食、生活起居、中医药物和非药物等护理干预措施,对压力性损伤患者进行分期辨证施护,可直达病所,使肿消痛止、脓去疮愈,且操作简便、安全性高、费用低廉、不良反应少,易被患者接受。 展开更多
关键词 中医护理干预 压力性损伤 中医外治法
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无汞触媒在氯乙烯合成中的应用
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作者 郭金星 郝利 +2 位作者 徐素霞 崔二梅 仝双 《聚氯乙烯》 CAS 2024年第11期20-22,共3页
介绍了无汞触媒研究的历史,阐述了使用无汞触媒的工艺要求、装填注意事项、使用条件优化和使用方法,并分析了无汞触媒的试用效果。
关键词 无汞触媒 氯乙烯 活化装置
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