检索结果-南通市图书馆

Natural nanomaterial as hard template for scalable synthesizing holey carbon naonsheet/nanotube with in-plane and out-of-plane pores for electrochemical energy storage

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

Chinese Chemical Letters 2018年第4期29卷 641-644页

作者： Yijie Zhang Luhua Lu Zhao Zhang Zhu Shu Kai Dai jinghai Liu Ying Chen hongyun jin Shuen Hou China University of Geosciences Wuhan Wuhan 430074 China Zhejiang Institute China University of Geosciences Hangzhou 311305 China College of Physics and Electronic Information Huaibei Normal University Huaibei 235000 China Chemistry and Chemical Engineering Inner Mongolia University for the Nationalities Tongliao 028000 China

Tuning porous structure of carbon nanomaterials has been found to be important for their performance enhancement in electrochemical energy storage applications. In this work we employed a natural nanomaterial kaolinite, which is abundant and cheap, as hard template to synthesis porous carbon nanomaterial. By tuning the structure of hard template kaolinite, we have achieved a template directed formation of holey carbon nanosheet/nanotube materials. This carbon nanomaterials with hierarchical in-plane and out-of-plane pores have shown electrochemical energy storage capacity of 286 F/g（equal to 314 F/cm^3） at 0.1 A/g and 85 F/g（equal to 93 F/cm^3） at 100 A/g, which is comparable to variety of reported carbon based electrochemical energy storage electrode materials.

关键词： Kaolinite hard template Carbon nanomaterials Supercapacitor Energy storage

Comparative tribological behavior of friction composites containing natural graphite and expanded graphite

在线全文

学校读者我要写书评

暂无评论

Friction 2020年第4期8卷 684-694页

作者： hongyun jin Keke ZHOU Zhengjia JI Xiaocong TIAN Ying CHEN Luhua LU Yazhou REN Chunhui XU Shanshan DUAN Jiangyu LI Shu-en HOU Faculty of Materials Science and Chemistry China University of GeosciencesWuhan 430074China Department of Mechanical Engineering University of WashingtonSeattleWA 98195-2600USA

In this study, expanded graphite and natural graphite were introduced into resin-based friction materials, and the tribological behavior of the composites was investigated. The tribo-performance of the two friction composites was evaluated using a constant speed friction tester. The results showed that the expanded graphite composite (EGC) displayed better lubricity in both the fading and the recovery processes. The wear rate of the EGC decreased by 22.43%more than that of the natural graphite composite (NGC). In the fading process, and the EGC enhanced the stability of the coefficient of friction. The recovery maintenance rate of the NGC was 4.66% higher than that of the EGC. It can be concluded that expanded graphite plays an important role in the formation of a stable contact plateau and can effectively reduce the wear.

关键词： natural graphite expanded graphite tribological behavior wear mechanism

Synthesis of octahedral Fe3O4@C Nanostructures via a Reducing-Composite-Hydroxide-Mediated approach and their properties

在线全文

学校读者我要写书评

暂无评论

Synthesis of octahedral Fe3O4@C Nanostructures via a Reducin...

中部四省化学化工学会2016年学术年会

作者： Min Liu hongyun jin Shuen Hou Faculty of Materials Science and Chemistry China University of Geosciences

Magnetite(FeO) has been regarded as a promising anode material for lithium-ion batteries(LIBs) due to its high theoretical capacity,low-field magnetic separation,low cost,and environmental ***,its commercial application in lithium-ion batteries is still hindered by its poor cycling stability and low rate capability,resulted from its large volume expansion/extraction upon long-term cycling and intrinsic low *** address the aforementioned challenges,we present a novel one-pot synthesis of carbon coated monocrystalline FeO with octahedral structure as high-performance anode materials for LIBs,using a reducing-composite-hydroxide-mediated(R-CHM) *** resulted octahedral FeO@C electrode exhibits outstanding rate capability(600,450,340,278,187,455,150 and 124 mA h g-1 at 0.2,0.5,1,2,3,5 and 10C) and excellent cycling stability with a retained capacity of 300 mA h g after 20 cycles at an extremely high specific current of *** encouraging results indicate that octahedral FeO@C nanostructure can provide a new insight into the development of long-life electrodes for future rechargeable lithium ion batteries(LIBs).More importantly,the R-CHM method developed in our work can be extended to synthesis of other functional nanocomposites for various applications thanks to its versatility.

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

日本的农村振兴政策

中国党政干部论坛 2006年第4期 42-44页

作者：金洪云中国人民大学农业与农村发展学院

战后日本经历了几个经济发展时期,日本的农业农村建设,在各个时期也有各自侧重的振兴政策,这些政策对日本的农村建设与振兴具有重大意义,其中的一些经验值得我们借鉴。

关键词：农村振兴政策法律制度日本农村建设

Expression profiles of microRNAs from lactating and non-lactating bovine mammary glands

在线全文

学校读者我要写书评

暂无评论

Expression profiles of microRNAs from lactating and non-lact...

Preparation and Characterization of TiO<sub>2</sub>Photocatalytic Thin Film and Its Compounds by Micro-Arc Oxidation Technique

第五届全国生物信息学与系统生物学学术大会暨国际生物信息学前沿研讨会高通量时代的生物信息学与系统生物学

作者： Zhen Li Xiaolu jin.hongyun Liu Lijian Luo Jianxin Liu Institute of Dairy Science MOE Key Laboratory of Molecular Animal NutritionZhejiang University Laboratory of Functional Genomics College of Animal SciencesZhejiang University

Background:MicroRNAs(miRNAs) have been implicated in the regulation of milk protein synthesis and development of mammary gland(MG).However,the function of miRNAs in regulating lactation is ***,the elucidation of miRNA expression profiles in MG provides a crucial entry into the understanding of the mechanisms of lactation. Methods:In this study,parenchymal tissues were sampled from the MG of non- and lactating Holstein dairy *** small RNA was sequenced by Solexa sequencing and processed using ACGTlOl-miR program and UNAFold *** IDEG 6 was used to identify differentially expressed miRNAs.A custom-designed microarray assay including 523 miRNA probes was performed to analyze miRNA expression *** EGAN software was used to construct network between miRNAs,target genes and lactation. Results:Two miRNA libraries were constructed and *** were 885 premiRNAs encoding for 921 miRNAs,of which 884 were unique and 544(61.5%) were expressed in both *** them,284 were known as bovine miRNAs registered in the miRbase database;96 miRNAs were conserved among other mammalian;and 566 miRNAs were bovine-novel candidates.A custom-designed microarray assay was performed to analyze miRNA expression patterns in the MG of lactating and non-lactating dairy *** against non-lactating MG,a total of 226 miRNAs in the lactating MG showed significant differences in expression(P<0.01).Real-time quantitative PCR was used for validation of the sequencing results of selected 32 *** 50%of miRNAs were consistent with Solexa sequencing *** chromosome positions for all 885 pre-miRNAs were found that 800 premiRNAs matched with bta genome,and only 230 pre-miRNAs were grouped into 55 clusters. Using integrative miRNA target-prediction and network-analysis approaches an interaction network of lactation-related miRNAs and their putative targets was *** networks involved 37 miRNAs detected by this study and 15 target

关键词： bovine mammary gland lactation,miRNAs

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

Advances in Materials Physics and Chemistry 2013年第8期3卷 320-326页

作者： Qun Ma Lili Ji Yinchang Li Tingting Jiang Junxia Wang Fei Li hongyun jin Yongqian Wang Engineering Research Center of Nano-Geo Materials of Education China University of Geosciences Wuhan China Jiangcheng College of China University of Geosciences Wuhan China

Mesoporous TiO2 ceramic films have been prepared upon the Ti alloy substrate by the micro-arc oxidation (MAO) technology. To enhance the photo-catalytic property of the films, Eu2O3 particles were added into the electrolyte solution of Na2CO3/Na2SiO3. Scanning electron microscope (SEM), energy dispersive (EDS), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) are employed to characterize the modified films. Diffuse reflectance spectra (DRS) test, photo-generated current test and photo decomposition test are applied to evaluate the photo-catalytic property of the modified films. The results show that Eu2O3 transformed into one-dimensional (1-D) nano-wires embedded within the composite film, and the film has high photo-catalytic property.

关键词： TiO2 Eu2O3 Compound Photo-Catalytic Property

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

纳米金刚石抛光液制备及应用

金刚石与磨料磨具工程 2007年第3期27卷 67-71页

作者：靳洪允侯书恩杨晓光中国地质大学材料科学与化学工程学院湖北武汉430074

随着光电信息产业的迅猛发展,纳米金刚石抛光液成为了超精密抛光领域的研究热点。本文首先总结了国内外专家、学者关于纳米金刚石微粉在水性和油性介质中的分散方面的一些研究工作,对微粉在介质中的分散、稳定机理进行了初步的探讨;并... 详细信息

随着光电信息产业的迅猛发展,纳米金刚石抛光液成为了超精密抛光领域的研究热点。本文首先总结了国内外专家、学者关于纳米金刚石微粉在水性和油性介质中的分散方面的一些研究工作,对微粉在介质中的分散、稳定机理进行了初步的探讨;并对纳米金刚石抛光液的制备以及抛光液在半导体硅片、计算机硬盘基片、计算机磁头、光纤连接器以及其它材料的表面超精密抛光应用进行了综述。水基纳米金刚石抛光液可能是未来抛光液的发展方向。

关键词：纳米金刚石抛光液分散应用

在线全文

学校读者我要写书评

暂无评论

卟啉基多孔材料研究进展

化工新型材料 2013年第8期41卷 24-26,42页

作者：张杰侯书恩靳洪允中国地质大学(武汉)材料与化学学院武汉430074

多孔材料因其潜在的气体存储、吸附、分离和催化等性质,一直以来是化学家、材料学家的研究热点方向之一。选择合适的有机前驱体是设计合成多孔材料的关键。本文对卟啉基多孔材料进行了简单的阐述,主要分金属有机框架、共价有机框架和多... 详细信息

多孔材料因其潜在的气体存储、吸附、分离和催化等性质,一直以来是化学家、材料学家的研究热点方向之一。选择合适的有机前驱体是设计合成多孔材料的关键。本文对卟啉基多孔材料进行了简单的阐述,主要分金属有机框架、共价有机框架和多孔有机框架三个方向。在此基础上对该方向的前景进行了展望。

关键词：卟啉基多孔材料金属有机框架共价有机框架多孔有机框架

在线全文

学校读者我要写书评

暂无评论

聚酰亚胺类共价有机骨架多孔材料的研究进展

化工新型材料 2013年第3期41卷 17-19页

作者：张杰侯书恩靳洪允中国地质大学(武汉)材料与化学学院武汉430074

聚酰亚胺类共价有机骨架与常规的多孔材料相比,具有较高的机械强度,良好的化学和物理稳定性以及合成的多样性以及孔尺寸的可控性,能够广泛应用于非均相催化,分离和气体储存等领域,因而有望成为一种新型的具有发展潜力的多孔材料。从聚... 详细信息

聚酰亚胺类共价有机骨架与常规的多孔材料相比,具有较高的机械强度,良好的化学和物理稳定性以及合成的多样性以及孔尺寸的可控性,能够广泛应用于非均相催化,分离和气体储存等领域,因而有望成为一种新型的具有发展潜力的多孔材料。从聚酰亚胺类共价有机骨架中多孔材料的合成、性能等方面对近年来国内外的研究状况进行了详细的阐述,并在此基础上对该方向的前景进行了展望。

关键词：聚酰亚胺共价有机骨架多孔材料