检索结果-南通市图书馆

Durable Design of Superhydrophobic Coatings with TiO_(2)Particles and Al_(2)O_(3)Whiskers for the Enhanced Anti-icing Performance

在线全文

学校读者我要写书评

暂无评论

Journal of Bionic Engineering 2024年第3期21卷 1360-1374页

作者： Weilan liu Kunlong li Yizhou Shen Huanyu Zhao yaru Ni Zeyu Cai lingfeng Zhao Zhen Wang Institute of Advanced Materials(IAM) School of Materials Science and EngineeringNanjing Tech UniversityNanjing211816China College of Materials Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing211100China Aviation Industry Aerodynamics Research Institute of China Shenyang110000China

Superhydrophobic coatings with high non-wetting properties are widely applied in anti-icing ***,the micro-nanostructures on the surfaces of superhydrophobic coatings are fragile under external forces,resulting in reduced ***,mechanical strength and durability play a crucial role in the utilization of superhydrophobic *** this study,we employed a two-step spraying method to fabricate superhydrophobic FEVE-based coatings with exceptional mechanical durability,utilizing fluorinated TiO_(2)nanoparticles and fluorinated Al_(2)O_(3)microwhiskers as the *** composite coating exhibited commendable non-wetting properties,displaying a contact angle of 164.84°and a sliding angle of 4.3°.On this basis,the stability of coatings was significantly improved due to the interlocking effect of Al_(2)O_(3)*** 500 tape peeling cycles,500 sandpaper abrasion tests,and 50 kg falling sand impact tests,the coatings retained superhydrophobicity,exhibiting excellent durability and application ***,the ice adhesion strength on the coatings was measured at only 65.4 kPa,while the icing delay time reached 271.8 s at-15℃.In addition,throughout 500 freezing/melting cycles,statistical analysis revealed that the superhydrophobic coatings exhibited a freezing initiation temperature as low as-17.25℃.

关键词： Superhydrophobic coatings Anti-icing Mechanical durability

Surface deterioration dependent on the crystal facets of spinel liNi0.5Mn1.5O4 cathode active material

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第10期97卷 757-766页

作者： Qian li Yan Zhao Jifu Zhu Wujiu Zhang Yi liu yaru Cui Chao Shen Keyu Xie School of Metallurgical Engineering Xi'an University of Architecture and Technology Shaanxi Union Research Center of University and Enterprise for Cathode Materials of liBs State Key Laboratory of Solidification Processing Center for Nano Energy Materials Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU) CRRC Zhu Zhou Institute Co. Ltd.

The spinel liNi0.5Mn1.5O4（LNMO） cathode active materials（CAMs） are considered a promising alternative to commercially available cathodes such as layered and polyanion oxide cathodes,primarily due to their notable safety and high energy density,particularly in their single-crystal ***,the industrial application of the LNMO CAMs is severely inhibited due to the interfacial deterioration and corrosion under proton-rich and high-voltage *** study successfully designed and synthesized two typical types of crystal facets-exposed single-crystal LNMO *** tracking the electrochemical deterioration and chemical corrosion evolution,this study elucidates the surface degradation mechanisms and intrinsic instability of the LNMO,contingent upon their crystal ***（111） facet,due to its elevated surface energy,is found to be more susceptible to external attack compared to the（100） and（110）*** study highlights the electrochemical corrosion stability of crystal plane engineering for spinel LNMO CAMs.

关键词： Chemical corrosion Crystal facets Electrochemical degradation liNi0.5Mn1.5O4 Surface energy

High-performance broadband photodetector based on PtSe2/MoS2 heterojunction from visible to near-infrared region

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2024年第3期67卷 263-270页

作者： Bin WANG Jian YUAN Mengqi CHE Mingxiu liU Yuting ZOU Junru AN Fan TAN yaru SHI Nan ZHANG liujian QI Shaojuan li State Key Laboratory of Luminescence and Applications Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of Sciences University of Chinese Academy of Sciences State Key Laboratory of Applied Optics Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of Sciences School of Physics and Electronic Information Huaibei Normal University

Broadband photodetectors based on narrow bandgap 2D materials have garnered considerable interest for application in the field of optoelectronic devices. However, their large dark current hinders device performance. In this work, a PtSe2/MoS2heterojunction was fabricated for a broadband photodetector operating within the range of visible to near-infrared. The device exhibited suppressed dark currents with a high rectification ratio of 104. The built-in electric field of the heterojunction promoted carrier separation effectively, and the device achieved excellent photoelectric performance with responsivities of 1.7 × 103,27.52, and 21 mA/W at 635, 785, and 1550 nm wavelengths, respectively. Moreover, the specific detectivities(D*) were 2.2 × 1013Jones(635 nm), 3.55 × 1011Jones(785 nm), and 2.72 × 108Jones(1550 nm). The device demonstrated a rise/fall time of 131/241 μs under 1550 nm laser illumination. Visible and near-infrared imaging detection was also demonstrated based on the heterojunction device at room temperature. This work sheds light on the remarkable potential of PtSe2/MoS2heterojunctions in the domain of high-performance broadband photodetectors.

关键词： photodetector PtSe$_{2}$/MoS$_{2}$ heterojunction visible to near infrared high performance

A forecasting model for wave heights based on a long short-term memory neural network

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Acta Oceanologica Sinica 2021年第1期40卷 62-69页

作者： Song Gao Juan Huang yaru li Guiyan liu Fan Bi Zhipeng Bai North China Sea Marine Forecasting Center of State Oceanic Administration Qingdao 266061China Shandong Provincial Key Laboratory of Marine Ecological Environment and Disaster Prevention and Mitigation Qingdao 266061China Mailbox 5111 Beijing 100094China

To explore new operational forecasting methods of waves,a forecasting model for wave heights at three stations in the Bohai Sea has been *** model is based on long short-term memory(LSTM)neural network with sea surface wind and wave heights as training *** prediction performance of the model is evaluated,and the error analysis shows that when using the same set of numerically predicted sea surface wind as input,the prediction error produced by the proposed LSTM model at Sta.N01 is 20%,18%and 23%lower than the conventional numerical wave models in terms of the total root mean square error(RMSE),scatter index(SI)and mean absolute error(MAE),***,for significant wave height in the range of 3–5 m,the prediction accuracy of the LSTM model is improved the most remarkably,with RMSE,SI and MAE all decreasing by 24%.It is also evident that the numbers of hidden neurons,the numbers of buoys used and the time length of training samples all have impact on the prediction ***,the prediction does not necessary improve with the increase of number of hidden neurons or number of buoys *** experiment trained by data with the longest time length is found to perform the best overall compared to other experiments with a shorter time length for ***,long short-term memory neural network was proved to be a very promising method for future development and applications in wave forecasting.

关键词： long short-term memory marine forecast neural network significant wave height

Interannual Variability and Scenarios Projection of Sea Ice in Bohai Sea Part Ⅰ: Variation Characteristics and Interannual Hindcast

在线全文

学校读者我要写书评

暂无评论

Journal of Ocean University of China 2020年第2期19卷 272-280页

作者： JIAO Yan HUANG Fei liU Qingrong li Ge li yaru YU Qingxi ZHAO Yiding Key Laboratory of Physical Oceanography Institute for Advanced Ocean StudyOcean University of ChinaQingdao 266100China North China Sea Marine Forecast Center Qingdao 266061China Laboratory for Ocean and Climate Dynamics Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China North China Sea Data&Information Service Qingdao 266061China

The Bohai Sea is one of the southernmost areas for sea ice formation in the northern *** ice disasters in this body of water severely affect marine activities and the safety of coastal *** this study,we analyze the variation characteristics of the sea ice in the Bohai Sea and establish an annual regression model based on predictable mode analysis *** results show the following:1)From 1970 to 2018,the average ice grade is(2.6±0.8),with a maximum of 4.5 and a minimum of *** Bay(LDB)has the heaviest ice conditions in the Bohai Sea,followed by Bohai Bay(BHB)and Laizhou Bay(LZB).Interannual variation is obvious in all three bays,but the linear decreasing trend is significant only in BHB.2)Three modes are obtained from empirical orthogonal function analysis,namely,single polarity mode with the same sign of anomaly in all of the three bays and strong interannual variability(82.0%),the north–south dipole mode with BHB and LZB showing an opposite sign of anomalies to that in LDB and strong decadal variations(14.5%),and a linear trend mode(3.5%).Critical factors are analyzed and regression equations are established for all the principal components,and then an annual hindcast model is established by synthesizing the results of the three *** model provides an annual spatial prediction of the sea ice in the Bohai Sea for the first time,and meets the demand of operational sea ice forecasting.

关键词： sea ice Bohai Sea variation characteristics interannual hindcast predictable mode analysis

实习护生自我效能感在人文关怀能力与职业获益感间的中介效应

在线全文

学校读者我要写书评

暂无评论

循证护理 2024年第13期10卷 2444-2447页

作者：周红颜杨西宁张文龙曾琪茜苏琳梁飘李亚如廖坤锋广西中医药大学广西530000 广西壮族自治区民族医院济南市中心医院

目的:探讨实习护生自我效能感在人文关怀能力与职业获益感间的中介效应。方法:便利抽取2022年10月1日—12月1日广西壮族自治区南宁市某三级甲等综合医院的300名实习护生为研究对象。采用一般资料调查问卷、关怀能力量表、一般自我效能... 详细信息

目的:探讨实习护生自我效能感在人文关怀能力与职业获益感间的中介效应。方法:便利抽取2022年10月1日—12月1日广西壮族自治区南宁市某三级甲等综合医院的300名实习护生为研究对象。采用一般资料调查问卷、关怀能力量表、一般自我效能感量表和护士职业获益感量表对实习护生进行调查并进行相关分析及中介效应分析。结果:实习护生人文关怀能力、自我效能感、职业获益感总分分别为(180.30±17.42)分、(30.37±4.66)分、(127.76±15.47)分;人文关怀能力、自我效能感与职业获益感总分均呈正相关(r值分别为0.585,0.476,均P<0.01);自我效能感在实习护生人文关怀能力与职业获益感间存在部分中介作用,占总效应的20.19%。结论:实习护生人文关怀能力、自我效能感和职业获益感处于中等偏上水平,护理管理者在重视实习护生人文关怀能力培养的同时还应注重自我效能感的培养,进而提高实习护生的职业获益感。

关键词：实习护生人文关怀能力自我效能感职业获益感中介效应

维普期刊数据库博看期刊

The enhanced protective effects of salvianic acid A: A functionalized nanoparticles against ischemic stroke through increasing the permeability of the blood-brain barrier

在线全文

学校读者我要写书评

暂无评论

Nano Research 2020年第10期13卷 2791-2802页

作者： yaru li Xiaojie Zhang Zhifeng Qi Xueling Guo Xiaopeng liu Wenjuan Shi Yang liu libo Du State Key Laboratory for Structural Chemistry of Unstable and Stable Species Center for Molecular ScienceInstiute of ChemistryChinese Academy of SciencesBeijing 100190China Graduate School University of Chinese Academy of SciencesBejing 100049China Cerebrovascular Diseases Research Institute Xuanwu Hospital of Captital Medical UniversityBeijing 100053China Department of Neurosurger The Second Hospial of Hebei Medical UniversityShijazhuang 050051China

Ischemic stroke is the leading cause of disability and death worldwide. Currently, the only proven treatment for ischemic stroke is restoring the cerebral blood supply. In addition, some of the tissue is damaged during the subsequent reperfusion because of the overproduction of reactive oxygen species (ROS). Furthermore, antioxidant therapies have shown promise in preclinical studies for the treatment of ischemia-reperfusion injury. However, their therapeutic efficacy has been limited because of their low bioavailability in brain. To resolve this issue, we synthesized ROS-responsive, fan-shaped dendrimer nanoparticles (NPs) and conjugated them with a blood-brain barrier (BBB)-targeting peptide, COG1410, and salvianic acid A (SA), which is an effective antioxidant in ischemic stroke. The BBB targeting peptide acts as a ligand of the nanocarrier system and penetrates the BBB through the endocytosis of the ligand receptor. The results showed that T-SA-NPs not only target and accumulate in the infarct area, they also reduce over 2 times of the infarct area and reverse the behavioral deficits in MCAO mice, which illustrates that these NPs have an effective therapeutic effect on the ischemic stroke. In addition, these NPs had no toxicity in any organs of the body. Importantly, the present study provides an alternative strategy for delivering antioxidants to the brain and achieving targeted therapy of ischemic stroke.

关键词： ischemic stroke blood-brain barrier salvianic acid A COG1410 reactive oxygen species(ROS)-responsive nanocarrier mitophagy

Heat-inducible SlWRKY3 confers thermotolerance by activating the SlGRXS1 gene cluster in tomato

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Horticultural Plant Journal 2024年第2期10卷 515-531页

作者： Ying Wang Wenxian Gai liangdan Yuan Lele Shang Fangman li Zhao Gong Pingfei Ge yaru Wang Jinbao Tao Xingyu Zhang Haiqiang Dong Yuyang Zhang National Key Laboratory for Germplasm Innovation and Utilization for Fruit and Vegetable Horticultural Crops Huazhong Agricultural UniversityWuhanHubei 430070China Hubei Hongshan Laboratory WuhanHubei 430070China

High temperature stress is one of the major environmental factors that affect the growth and development of plants. Although WRKY transcription factors play a critical role in stress responses, there are few studies on the regulation of heat stress by WRKY transcription factors,especially in tomato. Here, we identified a group I WRKY transcription factor, SlWRKY3, involved in thermotolerance in tomato. First, SlWRKY3 was induced and upregulated under heat stress. Accordingly, overexpression of SlWRKY3 led to an increase, whereas knock-out of SlWRKY3 resulted in decreased tolerance to heat stress. Overexpression of SlWRKY3 accumulated less reactive oxygen species(ROS), whereas knock-out of SlWRKY3 accumulated more ROS under heat stress. This indicated that SlWRKY3 positively regulates heat stress in tomato. In addition,SlWRKY3 activated the expression of a range of abiotic stress-responsive genes involved in ROS scavenging, such as a SlGRXS1 gene *** analysis showed that SlWRKY3 can bind to the promoters of the SlGRXS1 gene cluster and activate their expression. Collectively, these results imply that SlWRKY3 is a positive regulator of thermotolerance through direct binding to the promoters of the SlGRXS1 gene cluster and activating their expression and ROS scavenging.

关键词： Tomato WRKY transcription factor SlWRKY3 Thermotolerance SlGRXS1 Gene cluster Abiotic stress

Construction of 2D-2D TiO_2 nanosheet/layered WS_2 heterojunctions with enhanced visible-light-responsive photocatalytic activity

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Catalysis 2019年第1期40卷 60-69页

作者： Yongchuan Wu Zhongmin liu yaru li Jitao Chen Xixi Zhu Ping Na School of Chemical Engineering and Technology Tianjin UniversityTianjin 300350China College of Chemistry and Chemical Engineering Dezhou UniversityDezhou 253023ShandongChina College of Chemistry and Environmental Engineering Shandong University of Science and TechnologyQingdao 266590ShandongChina

Constructing nanocomposites that combine the advantages of composite materials,nanomaterials,and interfaces has been regarded as an important strategy to improve the photocatalytic activity of *** this study,2D‐2D TiO2 nanosheet/layered WS2(TNS/WS2)heterojunctions were prepared via a hydrothermal *** structure and morphology of the photocatalysts were systematically *** WS2(~4 layers)was wrapped on the surface of TiO2 nanosheets with a plate‐to‐plate stacked structure and connected with each other by W=O *** as‐prepared TNS/WS2 heterojunctions showed higher photocatalytic activity for the degradation of RhB under visible‐light irradiation,than pristine TiO2 nanosheets and layered *** improvement of photocatalytic activity was primarily attributed to enhanced charge separation efficiency,which originated from the perfect 2D‐2D nanointerfaces and intimate interfacial contacts between TiO2 nanosheets and layered *** on experimental results,a double‐transfer photocatalytic mechanism for the TNS/WS2 heterojunctions was proposed and *** work provides new insights for synthesizing highly efficient and environmentally stable photocatalysts by engineering the surface heterojunctions.

关键词： WS2 TiO2 Nanosheet Heterojunction Photocatalysis Visible‐light responsive