检索结果-南通市图书馆

Low-Temperature Fabrication of Stable Black-Phase CsPbI₃ Perovskite Flexible Photodetectors Toward Wearable Health Monitoring

引用

NANO-MICRO LETTERS 2025年第1期17卷 1-14页

作者： Zhao, Yingjie Sun, Yicheng Pei, Chaoxin Yin, Xing Li, Xinyi Hao, Yi Zhang, mengru yuan, meng Zhou, Jinglin Chen, Yu Song, Yanlin Zhengzhou Univ Coll Chem Zhengzhou 450001 Peoples R China Zhengzhou Univ Pingyuan Lab Zhengzhou 450001 Peoples R China Chinese Acad Sci Inst Chem Key Lab Green Printing Beijing 100190 Peoples R China Chinese Acad Sci Tech Inst Phys & Chem Key Lab Bioinspired Mat & Interfacial Sci Beijing 100190 Peoples R China Chinese Acad Sci Inst High Energy Phys Beijing 100049 Peoples R China

Low-temperature fabrication of black-phase CsPbI3 perovskite films is first demonstrated by using diphenylphosphinic chloride additive under 30-50 degrees C, arising from the steric effect and chloride insertion ***-area high-quality all-inorganic perovskite films with fewer defects enhanced crystallographic orientation, and excellent environmental stability is *** record performances are demonstrated for flexible wearable photodetectors with a responsivity of 42.1 A W-1, a detectivity of 1.3 x 1014 Jones, high-fidelity image, photoplethysmography sensor functions, and high mechanical stability. Flexible wearable optoelectronic devices fabricated from organic-inorganic hybrid perovskites significantly accelerate the development of portable energy, biomedicine, and sensing fields, but their poor thermal stability hinders further applications. Conversely, all-inorganic perovskites possess excellent thermal stability, but black-phase all-inorganic perovskite film usually requires high-temperature annealing steps, which increases energy consumption and is not conducive to the fabrication of flexible wearable devices. In this work, an unprecedented low-temperature fabrication of stable black-phase CsPbI3 perovskite films is demonstrated by the in situ hydrolysis reaction of diphenylphosphinic chloride additive. The released diphenyl phosphate and chloride ions during the hydrolysis reaction significantly lower the phase transition temperature and effectively passivate the defects in the perovskite films, yielding high-performance photodetectors with a responsivity of 42.1 A W-1 and a detectivity of 1.3 x 1014 Jones. Furthermore, high-fidelity image and photoplethysmography sensors are demonstrated based on the fabricated flexible wearable photodetectors. This work provides a new perspective for the low-temperature fabrication of large-area all-inorganic perovskite flexible optoelectronic devices.

关键词： In situ hydrolyzation Low-temperature processing All-inorganic perovskite Flexible photodetectors Health monitoring

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

On the Sixth Power Mean of the Two-term Exponential Sums

引用

Acta Mathematica Sinica,English Series 2022年第3期38卷 510-518页

作者： Wen Peng ZHANG yuan yuan meng School of Mathematics Northwest UniversityXi’an710127P.R.China

The main purpose of this article is to study the calculating problem of the sixth power mean of the two-term exponential sums,and give an interesting calculating formula for *** the same time,the paper also provides a... 详细信息

关键词： The two-term exponential sums the sixth power mean

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

Detecting Intensity Evolution of the Western North Pacific Super Typhoons in 2016 Using the Deviation Angle Variance Technique with FY Data

引用

Journal of Meteorological Research 2019年第1期33卷 104-114页

作者： meng yuan Wei ZHONG Institute of Meteorology and Oceanography National University of Defense Technology

This paper analyzes the complete lifecycle of super typhoons in 2016 in the western North Pacific(WNP) using the deviation angle variance technique(DAV-T). Based on the infrared images from Fengyun(FY) satellites, the DAV-T enables quantification of the axisymmetry of tropical cyclones(TCs) by using the DAV values; and thus, it helps improve the capability of TC intensity estimation. Case analyses of Super Typhoons Lionrock and Meranti were performed to explore the distribution characteristics of the DAV values at the various stages of TC evolution. The results show that the minimum DAV values(i.e., map minimum values: MMVs) gradually decreased and their locations constantly approached the circulation center with enhancement of the TC organization; however, when a ring or disk structure was formed around a TC, significant changes in MMV locations were no longer observed. Nonetheless,when large-scale non-closed deep convective cloud clusters appeared at the early stage or the dissipation stage of the typhoon, the axisymmetry of the TC was poor and the MMV locations tended to lie in the most convective region rather than in the TC circulation center. Overall, the MMVs and their locations, respectively, exhibited a strong correlation with the TC intensity and circulation center, and the correlation increased as the TCs became stronger. Combined with the China Meteorological Administration BestTrack dataset(CMA-BestTrack), statistical analysis of all research samples reveals that the correlation coefficient between the MMVs and maximum surface wind speeds(Vmax) was –0.80; the root mean square error(RMSE) of relative distance between the MMV locations and TC centers was 140.3 km; and especially, when the samples below the tropical depression(TD) intensity were removed, the RMSE of the relative distance decreased dramatically to 95.0 km. The value and location of the MMVs could be used as important indicators for estimating TC intensity and center.

关键词： deviation angle variance technique(DAV-T) axisymmetry super typhoon Fengyun(FY) satellites

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

In Loving Memory of Professor Shiping Wang

引用

Molecular Plant 2019年第9期12卷 1171-1172页

作者： meng yuan National Key Laboratory of Crop Genetic Improvement National Center of Plant Gene Research(Wuhan)Huazhong Agricultural UniversityWuhan 430070China

We are deeply saddened that our respected colleague *** Wang passed away on May 14,2019,at the age of 64 after a hard-fought battle with cancer for four years and seven *** was a professor of plant pathology at Huazho... 详细信息

关键词： Loving mother passed

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

Maintenance and induction of murine embryonic stem cell differentiation using E-cadherin-Fc substrata without colony formation

引用

Frontiers of Materials Science 2013年第1期7卷 51-61页

作者： Qing-yuan meng Toshihiro AKAIKE Department of Materials Science and Engineering Tsinghua University Beijing 100084 China Department of Biomolecular Engineering Graduate School of Bioscience and Biotechnnology.Tokyo Institute of Technology 4259 Nagatsuta-cho Midori-ku Yokohama 226-8501 Japan

Induced embryonic stem (ES) cells are expected to be promising cell resources for the observation of the cell behaviors in developmental biology as well as the implantation in cell treatments in human diseases. A recombinant E-cadherin substratum was developed as a cell recognizable substratum to maintain the ES cells’ self-renewal and pluripotency at single cell level. Furthermore, the generation of various cell lineages in different germ layers, including hepatic or neural cells, was achieved on the chimeric protein layer precisely and effectively. The induction and isolation of specific cell population was carried out with the enhancing effect of other artificial extracellular matrices (ECMs) in enzyme-free process. The murine ES cell-derived cells showed highly morphological similarities and functional expressions to matured hepatocytes or neural progenitor cells.

关键词： cell adhesion molecule embryonic stemcell differentiation E-cadherin-Fc single cell culture system

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

Gut microbiome and nonalcoholic fatty liver disease

引用

Hepatobiliary & Pancreatic Diseases International 2023年第5期22卷 444-451页

作者： meng-yuan Wu Jian-Gao Fan Xiangya School of Medicine Central South UniversityChangsha 410013China Department of Gastroenterology Xinhua HospitalShanghai Jiao Tong University School of MedicineShanghai 200092China Shanghai Key Lab of Pediatric Gastroenterology and Nutrition Shanghai 200092China

Nonalcoholic fatty liver disease(NAFLD)has become the most prevalent chronic liver disease globally and imposed a heavy economic burden on society and *** date,the pathological process of NAFLD is not yet fully *** evidences have demonstrated the pivotal role of gut microbiota in the pathogenesis of NAFLD,and gut dysbiosis has been commonly observed in patients with *** dysbiosis impairs gut permeability,allowing the translocation of bacterial products such as lipopolysaccharides(LPS),short-chain fatty acids(SCFAs),and ethanol to the liver via portal blood *** review aimed to shed light on the underlying mechanisms by which gut microbiota influences the development and progression of *** addition,the potential application of gut microbiome as a non-invasive diagnostic tool and a novel therapeutical target was reviewed.

关键词： Nonalcoholic fatty liver disease Gut microbiome Dysbiosis Intestinal permeability

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

A review on analytical methods for pharmaceutical and personal care products and their transformation products

引用

Journal of Environmental Sciences 2021年第3期33卷 260-281页

作者： yuan meng Weiyi Liu Xiaohui Liu Jinlan Zhang meng Peng Tingting Zhang Department of Environmental Science and Engineering Beijing Environmental Pollution Control and Resource Engineering Research CenterBeijing University of Chemical TechnologyBeijing 100029China National Engineering Laboratory for Lake Pollution Control and Ecological Restoration State Key Laboratory of Environmental Criteria and Risk AssessmentChinese Research Academy of Environmental SciencesBeijing 100012China School of Environment Tsinghua UniversityBeijing 100084China

Pharmaceutical and personal care products(PPCPs)and corresponding transformation products have caused widespread concern due to their persistent emissions and potential *** have wide octanol-water partition coefficients(K_(ow))and different ionization constants(pK_(a))resulting in a poor analysis accuracy and efficiency.A suitable analytical method is the first prerequisite for further research on their environmental behavior to prioritize the *** study reviewed a full-scale analytical protocol for environmental samples in the recent ten years:from sampling to instrumental *** sampling techniques were compared and recommended for long-term continuous and scientific observation.A quick and effective sample extraction and clean-up method are highly *** methods coupled to mass spectrometry for determining PPCPs with a wide range of logK_(ow)(-7.53 to 10.80)were summed ***-resolution mass spectrometry was confirmed to be a promising strategy for screening unknown transformation products,which would provide a nanogram level of detection limits and more accurate mass *** strategies and mass change principles were summarized in *** recovery rate was important in multiple contaminants analysis identification and factors affecting the recovery rate of PPCPs were also discussed in this review,including sample matrix,target compounds characteristics,extraction method and solid-phase *** review provides useful information for the selection of appropriate analytical methods and future development directions.

关键词： Pharmaceutical and personal care products Transformation products Passive sampling Extraction High-resolution mass spectrometry

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

Solid state recycling of Mg-Gd-Y-Zn-Zr alloy chips by isothermal sintering and equal channel angular pressing

引用

Journal of Magnesium and Alloys 2024年第7期12卷 2725-2740页

作者： Yanbo Pei Hongjun Ma meng yuan Bugang Teng School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China National Key Laboratory for Precision Hot Processing of Metals Harbin Institute of TechnologyHarbin 150001China

The Mg-7Gd-4Y-2Zn-0.5Zr alloy chips were successfully recycled through isothermal sintering and equal channel angular pressing(ECAP).The mechanical properties and microstructure evolution of samples during the recycling process were studied in *** eutectic phases in the as-cast alloy transform into long period-stacking ordered(LPSO)phases after homogenization,which can improve the plasticity of the *** isothermal sintering,the density of the sample is lower than that of the homogenized sample,and oxide films are formed adjacent to the bonding interface of the metal ***,the plasticity of the sintered sample is *** samples are fabricated after *** the grains are not refined compared to the sintered sample,the microstructure becomes more uniform due to *** interdendritic LPSO phase and kinked 14H-LPSO phase are formed in the alloy due to the shear deformation during the ECAP process,which improves the strength and plasticity of the sample ***,the basal texture is weakened due to the Bc route of the ECAP process,which can increase the Schmid factor of the basal slip system and improve the elongation of the *** 2 ECAP passes,the fully densified recycled billet shows superior mechanical properties with an ultimate tensile strength of 307.1 MPa and elongation of 11.1%.

关键词： Mg-Gd-Y-Zn-Zr alloy Solid state recycling Microstructure evolution LPSO phase Equal channel angular pressing

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

Regulation of Rice Tillering by RNA-Directed DNA Methylation at Miniature Inverted-Repeat Transposable Elements

引用

Molecular Plant 2020年第6期13卷 851-863页

作者： Le Xu Kun yuan meng yuan Xiangbing meng Min Chen Jianguo Wu Jiayang Li Yijun Qi Center for Plant Biology School of Life SciencesTsinghua UniversityBeijing 100084China Tsinghua-Peking Center for Life Sciences Beijing 100084China Key Laboratory of Plant Genomics and National Center for Plant Gene Research Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China Vector-borne Virus Research Center State Key Laboratory of Ecological Pest Control for Fujian and Taiwan CropsFujian Province Key Laboratory of Plant VirologyInstitute of Plant VirologyFujian Agriculture and Forestry UniversityFuzhou 350002China

Tillering is a major determinant of rice plant architecture and grain ***,we report that depletion of rice OsNRPD1a and OsNRPD1b,two orthologs of the largest subunit of RNA polymerase IV,leads to a high-tillering phenotype,in addition to dwarfism and smaller ***1a and OsNRPD1b are required for the production of 24-nt small interfering RNAs that direct DNA methylation at transposable elements(TEs)including miniature inverted-repeat TEs(MITEs).Interestingly,many genes are regulated either positively or negatively by TE *** them,OsMIR156d and OsMIR156j,which promote rice tillering,are repressed by CHH methylation at two MITEs in the *** contrast,D14,which suppresses rice tillering,is activated by CHH methylation at an MITE in its *** findings reveal regulation of rice tillering by RNA-directed DNA methylation at MITEs and provide potential targets for agronomic trait enhancement through epigenome editing.

关键词： RdDM siRNA MITEs OsMIR156 D14 tiller

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

Precise Editing Enables Crop Broad-Spectrum Resistance

引用

Molecular Plant 2019年第12期12卷 1542-1544页

作者： Jingjing Tian Guoyong Xu meng yuan National Key Laboratory of Crop Genetic Improvement National Center of Plant Gene Research(Wuhan)Huazhong Agricultural UniversityWuhan 430070China State Key Laboratory of Hybrid Rice Institute for Advanced Studies(IAS)Wuhan UniversityWuhan 430072China

Loss of resistance to fast-adapted pathogens urgently calls for a sustainable and broad-spectrum strategy to meet the requirement of crop yield and safety for the increasing world *** of resistance genes,such as nucleotide-binding leucine-rich repeat proteins,from diverse cultivars,landraces,and domesticated or wild germplasm accessions offers the most direct practice for this ***,the facts of a narrow resistance spectrum and limited number or even shortage of such resistance genes to many specific pathogens leave an immediate question to be resolved in such a *** light of the evidence that all compatible pathogens trigger a conserved and wide range of host genes,namely susceptibility genes for their proliferation,management of those genes are of equal importance and promising for improvement in crop disease resistance(Zaidi et al.,2018).

关键词： cultivar resistance narrow

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：