检索结果-南通市图书馆

Room-temperature ferromagnetism and piezoelectricity in metalfree 2D semiconductor crystalline carbon nitride

Nano Research 2024年第6期17卷 5670-5679页

作者： Yong Wang Dingyi Yang Wei Xu Yongjie Xu Yu Zhang Zixuan Cheng Yizhang Wu Xuetao gan Wei Zhong Yan Liu Genquan Han Yue Hao Wide Bandgap Semiconductor Technology Disciplines State Key Laboratory School of MicroelectronicsAcademy of Advanced Interdisciplinary ResearchXidian UniversityXi’an 710071China Emerging Device and Chip Laboratory Hangzhou Institute of TechnologyXidian UniversityHangzhou 311200China INRS Centre for Energy Materials and Telecommunications1650 Boul.Lionel BouletVarennesQC J3X 1P7Canada National Laboratory of Solid State Microstructures Collaborative Innovation Center of Advanced Microstructures and Jiangsu Provincial Key Laboratory for NanotechnologyNanjing UniversityNanjing 210093China School of Education Jiangsu Open UniversityNanjing 210036China Department of Physics Shaanxi University of Science and TechnologyXi’an 710021China Department of Applied Physical Sciences The University of North Carolina at Chapel HillChapel HillNC 27514USA Key Laboratory of Light Field Manipulation and Information Acquisition Ministry of Industry and Information Technologyand Shaanxi Key Laboratory of Optical Information TechnologySchool of Physical Science and TechnologyNorthwestern Polytechnical UniversityXi'an 710129 China

Two-dimensional(2D)materials that combine ferromagnetic,semiconductor,and piezoelectric properties hold significant potential for both fundamental research and spin electronic ***,the majority of reported 2D ferromagnetic-semiconductor-piezoelectric materials rely on d-electron systems,which limits their practical applications due to a Curie temperature lower than room temperature(RT).Here,we report a high-crystallinity carbon nitride(CCN)material based on sp-electrons using a chemical vapor deposition *** exhibits a band gap of 1.8 eV and has been confirmed to possess substantial in-plane and out-of-plane ***,we acquired clear evidences of ferromagnetic behavior at room *** structural characterizations combined with theoretical calculations reveal that incorporating structural oxygen into the highly ordered heptazine structure causes partial substitution of nitrogen sites,which is primarily responsible for generating room-temperature ferromagnetism and *** a result,the strain in wrinkles can effectively modulate the domain behavior and piezoelectric potential at room *** addition of RT ferromagnetic-semiconductor-piezoelectric material based on sp-electrons to the family of two-dimensional materials opens up numerous possibilities for novel applications in fundamental research and spin electronic devices.

关键词： crystallinity carbon nitride room-temperature ferromagnetism piezoelectricity magnetic force microscopy density functional theory(DFT)calculations

来源：

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

Biodegradable,strong,and clear wood package for plastic alternative

引用

Nano Research 2024年第9期17卷 8531-8541页

作者： Jianfu Tang Xueqin Fan Haozhou Huang Xiaofei Dong Xueqi Li Peiru Wang Ran Yin Yanjun Xie Jian Li gang Tan Zhenqian Pang Wentao gan Key Laboratory of Bio-based Material Science&Technology(Ministry of Education) Northeast Forestry UniversityHarbin 150040China Department of Architecture College of Civil Engineering and ArchitectureZhejiang UniversityHangzhou 310027China Smart Materials for Architecture Research Lab Innovation Center of Yangtze River DeltaZhejiang UniversityJiaxing 314100China Heilongjiang Key Laboratory of Complex Traits and Protein Machines in Organisms Northeast Forestry UniversityHarbin 150040China

Using biodegradable material derived from renewable resources as petroleum-based plastics replacement is a promising way towards sustainable ***,the insufficient mechanical properties and complex manufacturing process of bioplastics still need to be improved for high-quality food ***,we report a top-down strategy to transform natural wood into a clear wood packaging film through scalable delignification and polyvinyl alcohol(PVA)*** wood packaging film demonstrates a laminated structure with completely collapsed cell walls and PVA intertwined together after energy-saving air drying,resulting in high light transmittance with low haze,good mechanical performance,and high barrier performance for oxygen and water *** dynamics simulations reveal the underlying fracture mechanism between cellulose and PVA,which effectively enhances the Young’s modulus and strength of the wood packaging *** findings contribute to the development of biodegradable and strong packaging materials,as well as other food-related applications,using sustainable wood.

关键词： wood food package mechanical enhancement plastic replacement biodegradability

来源：

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

Gravesoil fungi are more sensitive than bacteria in response to precipitation

引用

Soil Ecology Letters 2024年第3期6卷 71-83页

作者： Binghua Han Xueying gan Shunqin Shi Xueqian Hu Xianxian Mu Qiaoling Yu Shiheng Zhang Huan Li Institute of Microbiome Frontiers and One Health School of Public HealthLanzhou UniversityLanzhou 730000China State Key Laboratory of Grassland Agro-ecosystems Center for Grassland MicrobiomeLanzhou UniversityLanzhou 730000China Chongqing Key Laboratory of Development and Utilization of Genuine Medicinal Materials in Three Gorges Reservoir Area Faculty of Basic Medical SciencesChongqing Three Gorges Medical CollegeWanzhou 404120China Affiliated Peopleʼs Hospital of Chongqing Three Gorges Medical College Wanzhou 404120China

Precipitation scenario alteration leads to grievous ecological consequences in ecosystems,especially on the Qinghai-Tibet *** and fungal community and their abundant and rare taxa in soil ecosystems may respond differently to the changed ***,more attention needs to be paid to the sensitivity of bacteria and fungi and their abundant and rare taxa to precipitation *** responses of bacterial and fungal populations and their abundant and rare taxa concerning diversity,assembly,and interactions to manipulative changes of precipitation were explored via imitating no precipitation,little precipitation,and medium precipitation using 16S rRNA gene and ITS amplicon *** results indicated that the change rate of fungal Simpson diversity with precipitation was higher than that of *** slope of the modified stochasticity ratio(MST)value of fungi to precipitation was steeper than that of *** Simpson diversity and the MST value of abundant and rare taxa within bacteria had no difference with *** contrast,those of abundant taxa within fungi varied more than rare ones with *** unveiling the differential responses of microbial populations with discrepant characteristics,this study allowed us to understand the different microbial communities responding to rainfall on the Qinghai-Tibet Plateau.

关键词： Qinghai-Tibet Plateau sensitivity precipitation assembly co-occurrence networks

来源：

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

All-optical image denoising using a diffractive visual processor

引用

Light(Science & Applications) 2024年第3期13卷 429-445页

作者： Çağatay Işıl Tianyi gan Fazil Onuralp Ardic Koray Mentesoglu Jagrit Digani Huseyin Karaca Hanlong Chen Jingxi Li Deniz Mengu Mona Jarrahi Kaan Akşit Aydogan Ozcan Electrical and Computer Engineering Department University of CaliforniaLos AngelesCA 90095USA Bioengineering Department University of CaliforniaLos AngelesCA 90095USA California NanoSystems Institute(CNSI) University of CaliforniaLos AngelesCA 90095USA University College London Department of Computer ScienceLondonUnited Kingdom

Image denoising,one of the essential inverse problems,targets to remove noise/artifacts from input *** general,digital image denoising algorithms,executed on computers,present latency due to several iterations implemented in,e.g.,graphics processing units(GPUs).While deep learning-enabled methods can operate non-iteratively,they also introduce latency and impose a significant computational burden,leading to increased power ***,we introduce an analog diffractive image denoiser to all-optically and non-iteratively clean various forms of noise and artifacts from input images–implemented at the speed of light propagation within a thin diffractive visual processor that axially spans<250×λ,whereλis the wavelength of *** all-optical image denoiser comprises passive transmissive layers optimized using deep learning to physically scatter the optical modes that represent various noise features,causing them to miss the output image Field-of-View(FoV)while retaining the object features of *** results show that these diffractive denoisers can efficiently remove salt and pepper noise and image rendering-related spatial artifacts from input phase or intensity images while achieving an output power efficiency of~30–40%.We experimentally demonstrated the effectiveness of this analog denoiser architecture using a 3D-printed diffractive visual processor operating at the terahertz *** to their speed,power-efficiency,and minimal computational overhead,all-optical diffractive denoisers can be transformative for various image display and projection systems,including,e.g.,holographic displays.

关键词： remove rendering holographic

来源：

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

Realizing methanol synthesis from CO and water via the synergistic effect of Cu^(0)/Cu^(+)over Cu/ZrO_(2) catalyst

引用

Journal of Energy Chemistry 2024年第6期93卷 126-134,I0004页

作者： Yuan Fang Fan Wang Yang Chen Qian Lv Kun Jiang Hua Yang Huibo Zhao Peng Wang Yuyan gan Lizhi Wu Yu Tang Xinhua Gao Li Tan Institute of Molecular Catalysis and In Situ/Operando Studies Fujian Key Laboratory of Electrochemical Energy Storage MaterialsState Key Laboratory of Photocatalysis on Energy and EnvironmentCollege of ChemistryFuzhou UniversityFuzhou 350108FujianChina Leibniz-Institut für Katalyse e.V.an der Universität Rostock Albert-Einstein Strasse 9118059 RostockGermany Department of Chemistry Tsinghua UniversityBeijing 100084China State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering College of Chemistry and Chemical EngineeringNingxia UniversityYinchuan 750021Ningxi1China

The optimizing utilization of ca rbon resources has drawn wide attention all over the world,while exploiting the high-efficiency catalytic routes remains a ***,a direct methanol synthesis route is realized from pure CO and H_(2)O over 10%Cu/t-ZrO_(2) catalyst,where the time yield of methanol is144.43 mmol mol_(Cu)^(-1)h^(-1)and the methanol selectivity in hydrocarbons is 100%,The Cu species highly dispersed in the t-ZrO_(2) support lead parts of them in the cationic *** Cu^(+)sites contribute to the dissociation of H_(2)O,providing the H*source for methanol synthesis,while the formed Cu^(0) sites promote the absorption and transfer of H*during the ***,the H_(2)O is even a better H resource than H_(2) due to its better dissociation effectivity in this catalytic *** present work offers a new approach for methanol synthesis from CO and new insight into the process of supplying H donor.

关键词： H_(2)O CO Methanol Cu-based catalysts t-ZrO_(2)

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Saponin Ⅰ from Shuitianqi(Rhizoma Schizocapasae Plantagineae) inhibits metastasis by negatively regulating the transforming growth factor-β1/Smad7 network and epithelial-mesenchymal transition in the intrahepatic metastasis Bagg's Albino/c mouse model

引用

Journal of Traditional Chinese Medicine 2024年第4期44卷 642-651页

作者： LYU Meixian ZHOU Huan ZHI Limin ZHOU Jinling gan Rizhi QIN Yanping HE Nengting ZUO Qiqi LI Hao DONG Min LIANG gang Pharmaceutical College Guangxi Medical University Department of Pharmacy Affiliated Tumor Hospital of Guangxi Medical University Drug clinical trial Facility office the People's Hospital of Guangxi Zhuang Autonomous Region College of Pharmacy Guangxi University of Chinese Medicine Department of Pharmacy the Second Affiliated Hospital of Guangxi Medical University Department of Pharmacy People's Hospital of Guangxi Hezhou Department of Pharmacy Guangzhou Women and Children's Medical Center Liuzhou Hospital Department of Pharmacy First Affiliated Hospital of Gannan Medical University

OBJECTIVE: To examine the influence of Saponin Ⅰ from Shuitianqi(Rhizoma Schizocapasae Plantagineae)(SSPH Ⅰ) on hepatocellular carcinoma(HCC) metastasis,and to elucidate the underlying ***: The intrahepatic metastasis Bagg's Albino/c(BALB/c) mouse model was established with human hepatocellular carcinomas(HepG2) cells, then treated with normal saline(once per day), cisplatin(2 mg/kg, once every 2 d), and SSPH Ⅰ(25, 50, and 75 mg/kg, once per day). Then, we assessed alterations in the hepatic pathology and target protein expressions in the intrahepatic metastasis BALB/c mouse model using a series of molecular biology ***: Based on our analysis, SSPH Ⅰ significantly alleviated hepatocyte necrosis and tumor cells ***, SSPH Ⅰ suppressed extracellular matrix(ECM) degradation and angiogenesis via a decrease in matrix etalloproteinase-2(MMP-2), MMP-9, CD31, CD34,and vascular endothelial growth factor(VEGF) ***, SSPH Ⅰ repressed invasion and metastasis by suppressing the transforming growth factor-β1(TGF-β 1)/Smad7 axis and epithelial-mesenchymal transition(EMT), as evidenced by the scarce TGF-β1, Ncadherin, and Vimentin expressions, and elevated Smad7 and E-cadherin ***: The SSPH Ⅰ-mediated negative regulation of the TGF-β 1/Smad7 axis and EMT are critical for the inhibition of HCC invasion and metastasis.

关键词： Saponin I from Shuitianqi (Rhizoma Schizocapasae Plantagineae) Smad7 protein carcinoma, hepatocellular epithelial-mesenchymal transition transforming growth factor beta1

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Design and Implementation of an Intelligent Monitoring and Early Warning System for Kitchen Garbage Treatment

引用

Meteorological and Environmental Research 2024年第3期15卷 68-71页

作者： Dexian HUANG Binjun gan Environmental Health Workstation in Wuming District Nanning 530100China Smart Agriculture College of Yulin Normal University Yulin 535000China

With a population of 1.4 billion in China and a huge daily output of kitchen waste,intelligent treatment of kitchen waste is *** article elaborates on the design and implementation of an intelligent monitoring and early warning system from five aspects:system architecture design,hardware equipment selection and configuration,data collection and processing flow,early warning algorithm and model development,and system integration and testing *** also points out the advantages of the intelligent monitoring and early warning system in kitchen waste treatment.

关键词： Environmental sanitation Ecological environment Garbage disposal Intelligent systems

来源：

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

Intelligent Garbage Recycling: Design and Implementation Exploration of Automatic Classification System

引用

Meteorological and Environmental Research 2024年第2期15卷 37-39,43页

作者： Dexian HUANG Binjun gan Environmental Sanitation Station in Wuming District of Nanning City Nanning 530100China Smart Agriculture College Yulin Normal UniversityYulin 535000China

This paper introduces an intelligent waste recycling automatic classification system,which integrates sensors,image recognition,and robotic arms to achieve automatic identification and classification of *** system monitors the composition and properties of waste in real time through sensors,and uses image recognition technology for precise classification,and the robotic arm is responsible for grabbing and *** design and implementation of the system have important practical significance and application value,and help promote the popularization and standardization of waste *** paper details the system s architecture,module division,sensors and recognition technology,robotic arm and grabbing technology,data processing and control system,and testing and optimization *** results show that the system has efficient waste recycling efficiency and accuracy in practical applications,bringing new development opportunities to the waste recycling industry.

关键词： Waste classification and recycling Sensors Image recognition Robotic arms Convolutional neural networks

来源：

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

Evolution of the Mangrove Wetland since the Holocene: Current Progress and Future Perspectives

引用

Journal of Earth Science 2024年第05期 1669-1678页

作者： Xueyan Yan Xianzhong Ke Qinghua Li Yiqun gan Xianjun Xie Yamin Deng Geological Survey China University of Geosciences Wuhan Center China Geological Survey (Central South China Innovation Center for Geosciences) School of Environmental Studies China University of Geosciences

Mangrove wetlands are among the four most productive tropical and subtropical ecosystems. They are also a core component of the coastal blue carbon ecosystem, which is of great ecological significance to human beings, plants, animals, and the global carbon balance. There has been a global decrease in the distribution of mangrove forests, and their ecological function has gradually degenerated since the Holocene. Sediment from coastal mangrove wetlands can provide records of climate change and human activities, and multiple proxies including palynology, leaf fossil, biomarkers, DNA, phytolith and stable isotopes, can be used to reconstruct the evolutionary stages of paleo-mangroves and to identify the effect of natural processes and human activities on the distribution and evolution of mangroves. This information can provide theoretical support for mangrove protection and for improving carbon sequestration capacity. This paper summarizes and compares the multiple proxies for mangrove reconstruction, reviews progress in the study of natural succession of global mangroves since the Holocene, expands on the influence mechanisms of human activities on mangrove growth and development and uses past information to lay a foundation for a model to predict future mangrove development.

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Response Mechanisms to Flooding Stress in Mulberry Revealed by Multi-Omics Analysis

引用

Phyton-International Journal of Experimental Botany 2024年第2期93卷 227-245页

作者： Jingtao Hu Wenjing Chen Yanyan Duan Yingjing Ru Wenqing Cao Pingwei Xiang Chengzhi Huang Li Zhang Jingsheng Chen Liping gan College of Biology and Food Engineering Chongqing Three Gorges UniversityChongqing404100China Chongqing Three Gorges Academy of Agricultural Sciences Chongqing Three Gorges UniversityChongqing404155China

Abiotic stress,including flooding,seriously affects the normal growth and development of ***(Morus alba),a species known for its flood resistance,is cultivated worldwide for economic *** transcriptomic analysis has identified numerous differentially expressed genes(DEGs)involved in submergence tolerance in mulberry ***,a comprehensive analyses of metabolite types and changes under flooding stress in mulberry remain unreported.A non-targeted metabolomic analysis utilizing liquid chromatographytandem mass spectrometry(LC-MS/MS)was conducted to further investigate the effects of flooding stress on mulberry.A total of 1,169 metabolites were identified,with 331 differentially accumulated metabolites(DAMs)exhibiting up-regulation in response to flooding stress and 314 displaying *** enrichment analysis identified significant modifications in many metabolic pathways due to flooding stress,including amino acid biosynthesis and metabolism and flavonoid *** and DEGs are significantly enriched in the Kyoto Encyclopedia of Genes and Genomes(KEGG)pathways for amino acid,phenylpropanoid and flavonoid ***,metabolites such as methyl jasmonate,sucrose,and D-mannose 6-phosphate accumulated in mulberry leaves post-flooding ***,genes and metabolites associated with these KEGG pathways are likely to exert a significant influence on mulberry flood *** study makes a substantial contribution to the comprehension of the underlying mechanisms implicated in the adaptation of mulberry plants to submergence.

关键词： Mulberry flooding stress flavonoid biosynthesis phenylpropanoid biosynthesis

来源：

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

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：