检索结果-南通市图书馆

Engineering Shewanella-re duce d graphene oxide aerogel biohybrid to efficiently synthesize Au nanoparticles

Journal of Materials Science & Technology 2024年第1期168卷 50-61页

作者： Baocai Zhang Shulin Shao Huan Yu Qijing Liu Sicheng Shi Qingyuan Wu Zijie Wu Yiyu Feng Yifei Wang xi Sun Deguang Wu Feng Li Hao song Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering(Ministry of Education) Tianjin UniversityTianjin 300072China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical TechnologyBeijing 100029China School of Materials Science and Engineering Tianjin UniversityTianjin 300350China College of Biological Engineering Tianjin Agricultural UniversityTianjin 300384China Department of Brewing Engineering Moutai InstituteLuban AveRenhuai 564507China

Biosynthesizing Au nanoparticles(AuNPs)from gold-bearing scraps provides a sustainable method to meet the urgent demand for ***,it remains challenging to efficiently biosynthesize AuNPs of which the diameter is less than 10 nm from a trace amount of Au^(3+)concentration at the level of tens ***,we constructed an exoelectrogenic cell(eCell)-conductive reduced-graphene-oxide aero-gel(rGA)biohybrid by assembling Shewanella sp.S1(SS1)as living biocatalyst and rGA as conductive ad-sorbent,in which Au^(3+)at trace concentrations would be enriched by the adsorption of rGA and reduced to AuNPs through the extracellular electron transfer(EET)of *** regulate the size of the synthe-sized AuNPs to 10 nm,the strain SS1 was engineered to enhance its EET,resulting in strain RS2(pYYD-P tac-ribADEHC&pHG13-P_(bad)-omcC in SS1).Strain RS2 was further assembled with rGA to construct the RS2-rGA biohybrid,which could synthesize AuNPs with the size of 7.62±2.82 nm from 60 ppm Au^(3+)*** eCell-rGA biohybrid integrated Au^(3+)adsorption and reduction,which enabled AuNPs biosyn-thesis from a trace amount of Au^(3+).Thus,the required Au^(3+)ions concentration was reduced by one or two orders of magnitude compared with conventional methods of AuNPs *** work devel-oped an AuNPs size regulation technology via engineering eCell’s EET with synthetic biology methods,providing a feasible approach to synthesize AuNPs with controllable size from trace level of gold ions.

关键词： Au nanoparticles Exoelectrogenic cell(e-Cell) Shewanella Synthesis biology Extracellular electron transfer Reduced graphene oxide aerogel

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

Studies on the Catalytic Asymmetric Aza-Henry Reaction of Nitroalkanes to Boc-Imines

Studies on the Catalytic Asymmetric Aza-Henry Reaction of Ni...

引用

手性中国2014学术研讨会

作者： Jing Liu xi-xi song Wen-Chao Gao Yuan-Zhao Hua Min-Can Wang College of Chemistry and Molecular Engineering Zhengzhou University

＜正＞Aza-Henry reaction is a powerful and efficient method for the construction of carbon-carbon bonds in the organic synthesis.[1]In the recent decades,different research groups have made lots of studies in regards to Aza-Henry reaction and abundant of papers have been ***,the catalytic system for this kind of reaction is organocatalysis,few metal catalytic system has been developed.[2,3,4]In this work,the

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

High-responsivity on-chip waveguide coupled germanium photodetector for 2 μm waveband

引用

Photonics Research 2024年第1期12卷 115-122页

作者： JIANING WANG xi WANG YIHANG LI YANFU YANG QINGHAI song KE XU Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems Harbin Institute of TechnologyShenzhen 518055China Department of Electronic&Information Engineering Harbin Institute of TechnologyShenzhen 518055China Department of Science Harbin Institute of TechnologyShenzhen 518055China

Recently,the emerging 2μm waveband has gained increasing interest due to its great potential for a wide scope of *** with the existing optical communication windows at shorter wavelengths,it also offers distinct advantages of lower nonlinear absorption,better fabrication tolerance,and larger free carrier plasma effects for silicon photonics,which has been a proven device *** much progress has been witnessed for silicon photonics at the 2μm waveband,the primary challenge still exists for on-chip *** the maturity and compatibility of the waveguide coupled photodetectors made of germanium,the 2μm regime is far beyond its cutoff *** this work,we demonstrate an efficient and high-speed on-chip waveguidecoupled germanium photodetector operating at the 2μm *** weak sub-bandgap absorption of epitaxial germanium is greatly enhanced by a lateral separation absorption charge multiplication *** detector is fabricated by the standard process offered by a commercial *** device has a benchmark performance with responsivity of 1.05 A/W and 3 dB bandwidth of 7.12 GHz,which is able to receive high-speed signals with up to 20 Gbit/s data *** availability of such an efficient and fast on-chip detector circumvents the barriers between silicon photonic integrated circuits and the potential applications at the 2μm waveband.

关键词： waveguide responsivity wave

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 Direct Catalytic Asymmetric Michael/Hemiketalization Reaction ofβ,γ-Unsaturated α-Ketoamides with α-Hydroxyacetophenone

A Direct Catalytic Asymmetric Michael/Hemiketalization React...

引用

手性中国2014学术研讨会

作者： Yuan-Zhao Hua De-Zhi Kong xi-xi song Min-Can Wang Jun-Biao Chang College of Chemistry and Molecular Engineering Zhengzhou University

＜正＞The catalytic asymmetric Michael reaction is one of the most important carbon-carbon bond formation ***,β,γ-unsaturated a-ketoamides as a new class of Michael acceptors were less studied than the corresponding ester and phosphonate.[1]And the direct catalytic asymmetric Michael reaction ofα-hydroxyacetophenone as donors to β,γ-unsaturated a-ketoamides has not been *** this end,we report our dinuclear Zinc Catalyst 1 prepared in situ,which controls the addition of

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Direct Catalytic Asymmetric Michael/hemiketalization Reaction of β,γ-Unsaturated α-Ketoesters with α-Hydroxyacetophenone

Direct Catalytic Asymmetric Michael/hemiketalization Reactio...

引用

手性中国2014学术研讨会

作者： Meng-Meng Liu Pei-Jin Huang Yuan-Zhao Hua xi-xi song Min-Can Wang College of Chemistry and Molecular Engineering Zhengzhou University

The catalytic asymmetric Michael reaction ofβ,γ-unsaturated a-ketoesters is a powerful and versatile carbon-carbon bond-forming process in organic synthesis.[1]In 2013,we reported a Michael/hemiketalization reaction of a-hydroxyacetophenone toβ,γ-unsaturated a-ketoesters with excellent enantioselectivities catalyzed by our dinuclear Zinc catalyst L.[2]What’s more,this catalyst was more effective than Trost’s dinuclear zinc catalysts in asymmetric alternating copolymerization of carbon

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Structural and functional design of geopolymer adsorbents:a review

引用

Tungsten 2024年第1期6卷 48-76页

作者： Hai-Ze Jin Chen-xi Qiu Yan-song Li Bao Liu Jun-Yi Liu Qiao Chen Xue-Feng Lu Cui-xia Li Qi-Kun Wang School of Materials Science and Engineering Lanzhou University of TechnologyLanzhou 730050China State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals Lanzhou 730050China Shenyang Nonferrous Metals Research Institute Co. LTDShenyang 110000China Automotive Engineering Research Institute Jiangsu UniversityZhenjiang 212013China School of Materials Science and Engineering Jingdezhen Ceramic UniversityJingdezhen 333403China

The water pollution derived from the discharge of heavy metals,antibiotics,dyes and surfactants wastewater,*** seriously affected human survival and ecological *** an efficient and low-cost physical wastewater treatment process,the adsorption is a continuous hot spot in related scientific research and *** are non-crystal or semi-crystalline materials with high-efficiency adsorption performance due to the alkali metal ions that balance the electronegative aluminosilicate skeleton can be efficiently replaced by other cations in the aqueous *** related studies of different application conditions,service objects and morphological differences of geopolymer adsorbents based on structure-function design have been in-depth exploration and *** review aims to summarize the research progres s of the structure-function design based on the geopolymerization mechanism and kinetics and service *** overview of service characteristics and progress of geopolymers in the wastewater treatment field(e.g.,dyes,heavy metals,radionuclides,surfactants,antibiotics,ammonium,phosphorus,nitrogen and CO_(2),etc.)are systematically *** the evolution and development of morphological differences and the relationship of structure-function design of geopolymer adsorbents were compared and ***,the challenge worth overcoming,the trends worth considering and perspectives worth developing are highlighted.

关键词： Geopolymer Wastewater Adsorption Structure-function design Application

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

中继辅助的寄生反向散射通信网络中断性能分析

引用

电子与信息学报 2024年第6期46卷 2452-2461页

作者：宋曦韩东升华北电力大学电气与电子工程学院北京102206

已有寄生反向散射通信网络依赖于收发机之间存在的直达链路,从而无法应用于直达链路深度衰落或不存在场景。针对上述问题,该文提出一种中继辅助的寄生反向散射通信网络,并分析所提网络的中断性能。具体而言,依据所提网络推导得到主系统... 详细信息

已有寄生反向散射通信网络依赖于收发机之间存在的直达链路,从而无法应用于直达链路深度衰落或不存在场景。针对上述问题,该文提出一种中继辅助的寄生反向散射通信网络,并分析所提网络的中断性能。具体而言,依据所提网络推导得到主系统和次系统的瞬时信噪比,并在考虑次用户能量因果约束的条件下定义了主次系统中断概率,接着利用数学知识推导得到瑞利衰落模型下的主次系统中断概率表达式,最后通过计算机仿真验证了所推导的主次系统中断概率表达式的准确性,并分析了不同系统参数对主、次系统中断概率的影响。

关键词：反向散射通信能量收集中继中断概率

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

Future directions:combination of acupuncture with mesenchymal stem cells for Parkinson’s disease

引用

Integrative Medicine Discovery 2024年第23期8卷 1-6页

作者： Shan Zhong song-Zhe He xi-Lin Wang Department of Acupuncture and Moxibustion Guilin Municipal Hospital of Traditional Chinese MedicineGuangxi University of Chinese MedicineGuilin 541002China Department of Clinic Laboratory Affiliated Hospital of Guilin Medical UniversityGuilin 541001China.

Parkinson’s disease(PD)is a progressive chronic disease currently with no radical cure drugs and means due to the complex pathological mechanisms and limited regenerative capacity of *** aids in neuronal regeneration via various signaling routes like ROCK,Wnt,and Notch,safeguarding dopaminergic neurons against inflammation,oxidative stress,and cell death,which in turn enhances the progression of PD *** research findings indicate that integrating acupuncture with mesenchymal stem cells(MSCs)transplantation is more effective than using either acupuncture or MSCs infusion *** combined treatment improves the survival rate of MSCs,promotes the generation of functional neural networks by stimulating the secretion of neurotrophic factors,and ultimately improves the disease *** this review,we state the neuroprotective effects of acupuncture or MSCs treament alone in PD,then summarize the application of acupuncture combined with MSCs therapy in other ***,we anticipate that integrating acupuncture with MSCs transplantation may emerge as a novel and efficient approach for managing *** possibility needs to be verified through further basic and clinical research.

关键词： Parkinson’s disease acupuncture mesenchymal stem cells dopaminergic neuron therapy

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

FUBP3 mediates the amyloid-β-induced neuronal NLRP3 expression

引用

Neural Regeneration Research 2025年第7期20卷 2068-2083页

作者： Jing Yao Yuan Li xi Liu Wenping Liang Yu Li Liyong Wu Zhe Wang Weihong song The National Clinical Research Center for Geriatric Disease Xuanwu HospitalCapital Medical UniversityBeijingChina Department of Neurology The First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan ProvinceChina Department of Neurosurgery Xuanwu HospitalCapital Medical UniversityBeijingChina Department of Pediatrics The Second Affiliated Hospital and Yuying Children’s HospitalKey Laboratory of Alzheimer’s Disease of Zhejiang ProvinceInstitute of AgingWenzhou Medical UniversityWenzhouZhejiang ProvinceChina Oujiang Laboratory(Zhejiang Laboratory for Regenerative Medicine Visionand Brain Health)WenzhouZhejiang ProvinceChina

Alzheimer's disease is characterized by deposition of amyloid-β,which forms extracellular neuritic plaques,and accumulation of hyperphosphorylated tau,which aggregates to form intraneuronal neurofibrillary tangles,in the *** NLRP3 inflammasome may play a role in the transition from amyloid-βdeposition to tau phosphorylation and *** NLRP3 is primarily found in brain microglia,and tau is predominantly located in neurons,it has been suggested that NLRP3 expressed by microglia indirectly triggers tau phosphorylation by upregulating the expression of pro-inflammatory ***,we found that neurons also express NLRP3 in vitro and in vivo,and that neuronal NLRP3 regulates tau *** biochemical methods,we mapped the minimal NLRP3 promoter and identified FUBP3 as a transcription factor regulating NLRP3 expression in *** primary neurons and the neuroblastoma cell line Neuro2A,FUBP3 is required for endogenous NLRP3 expression and tau phosphorylation only when amyloid-βis *** the brains of aged wild-type mice and a mouse model of Alzheimer's disease,FUBP3 expression was markedly increased in cortical *** analysis suggested that FUBP3 plays a role in neuron-mediated immune *** also found that FUBP3 trimmed the 5′end of DNA fragments that it bound,implying that FUBP3 functions in stress-induced *** findings suggest that neuronal NLRP3 may be more directly involved in the amyloid-β-to–phospho-tau transition than microglial NLRP3,and that amyloid-βfundamentally alters the regulatory mechanism of NLRP3 expression in *** that FUBP3 was only expressed at low levels in young wild-type mice and was strongly upregulated in the brains of aged mice and Alzheimer's disease mice,FUBP3 could be a safe therapeutic target for preventing Alzheimer's disease progression.

关键词： 5′end trimming Alzheimer's disease amyloid-beta amyloid-β-dependent transcription FUBP3 inflammasome inflammation neuron NLRP3 tau transcription factor

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

Single-cell characterization of major components of plant cell walls in situ by Raman spectroscopy

引用

Science China(Life Sciences) 2024年第8期67卷 1772-1774页

作者： Yujian Li Weiwei Shen xi Zhang Yaning Cui Yuanyuan Zhao Yayu Guo xiaojuan Li Shuizhong Wang Guoyong song Pu Wang Jianfeng Ma Jinxing Lin State Key Laboratory of Efficient Production of Forest Resources College of Biological Sciences and TechnologyBeijing Forestry UniversityBeijing 100083China Institute of Tree Development and Genome Editing Beijing Forestry UniversityBeijing 100083China National Engineering Research Center of Tree Breeding and Ecological Restoration College of Biological Sciences and TechnologyBeijing Forestry UniversityBeijing 100083China Beijing Key Laboratory of Lignocellulosic Chemistry Engineering Research Center of Forestry Biomass Materials and EnergyMinistry of EducationBeijing Forestry UniversityBeijing 100083China Beijing Advanced Innovation Center for Biomedical Engineering School of Biological Science and Medical EngineeringBeihang UniversityBeijing 100191China Key lab of Bamboo and Rattan Science&Technology International Center for Bamboo and RattanBeijing 100102China

Dear Editor,Plant cell walls are complex and dynamic structures that are mainly composed of polysaccharide polymers such as cellulose,hemicellulose,and pectin,in addition to substantial amounts of the non-saccharide polymer lignin(McFarlane et al.,2014;German et al.,2023).The components of cell walls are interconnected in various ways to form a complex,multilayered network structure(Wen et al.,2023).

关键词： walls cellulose characterization

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

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：