检索结果-南通市图书馆

Enhancing capacitive deionization performance and cyclic stability of nitrogen-doped activated carbon by the electro-oxidation of anode materials

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 Journal of Chemical Engineering 2024年第5期69卷 23-33页

作者： Xiaona Liu Baohua Zhao Yanyun Hu Luyue Huang Jingxiang ma Shuqiao Xu Zhonglin Xia xiaoying ma Shuangchen ma School of Environmental Science and Engineering North China Electric Power UniversityBaoding 071003China Huadian Zhengzhou machinery Design and Research Institute Co. LtdZhengzhou 450002China Huadian Inner Mongolia Energy Co. Ltd.Baotou Power Generation BranchBaotou 014013China

Electrode materials with high desalination capacity and long-term cyclic stability are the focus of capacitive deionization(CDI) community. Understanding the causes of performance decay in traditional carbons is crucial to design a high-performance material. Based on this, here, nitrogen-doped activated carbon(NAC) was prepared by pyrolyzing the blend of activated carbon powder(ACP) and melamine for the positive electrode of asymmetric CDI. By comparing the indicators changes such as conductivity, salt adsorption capacity, pH, and charge efficiency of the symmetrical ACP-ACP device to the asymmetric ACP-NAC device under different CDI cycles, as well as the changes of the electrochemical properties of anode and cathode materials after long-term operation, the reasons for the decline of the stability of the CDI performance were revealed. It was found that the carboxyl functional groups generated by the electro-oxidation of anode carbon materials make the anode zero-charge potential(E_(pzc)) shift positively,which results in the uneven distribution of potential windows of CDI units and affects the adsorption capacity. Furthermore, by understanding the electron density on C atoms surrounding the N atoms, we attribute the increased cyclic stability to the enhanced negativity of the charge of carbon atoms adjacent to quaternary-N and pyridinic-oxide-N.

关键词： Anodic oxidation Capacitive deionization Cyclic stability N-doping

Removal of Hg^0 with sodium chlorite solution and mass transfer reaction kinetics

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2010年第5期53卷 1258-1265页

作者： Yi Zhao SongTao Liu Jie Yao xiaoying ma ChuanMin Chen N China Elect Power Univ Sch Environm Sci & Engn Baoding 071003 Peoples R China

The absorption behavior of Hg0 was studied experimentally by using sodium chlorite solution(NaClO2) as the absorbent in a bubble *** influencing factors on removal efficiency of Hg0 such as NaClO2 concentration,pH,reaction temperature and the concentration of Hg0 were *** results indicated that 72.91% of Hg0 removal efficiency could be achieved in acidic NaClO2 *** removal mechanism of Hg0 was proposed by analyzing of Hg2+ concentration in ab-sorption solution after reaction and comparing the electrode potentials between NaClO2 species and Hg2+/*** experimental results of mass transfer-reaction kinetics on oxidation of Hg0 by NaClO2 solution showed that with the increase of NaClO2 concentration and the decrease of pH value,the enhancement factor(E) and ratio of KG(Hg0)/kG(Hg0) increased and the liquid phase mass transfer resistance decreased,which is benefit to the mass transfer adsorption *** the increase of reaction temperature could improve the enhancement factor(E),but the ratio of KG(Hg0)/kG(Hg0) decreased;as a result,the liquid phase mass transfer resistance increased,therefore,the reaction rate for removal of Hg0 decreased.

关键词： NaClO2 elemental mercury absorption mass transfer reaction kinetics

Inhibition of YIPF2 Improves the Vulnerability of Oligodendrocytes to Human Islet Amyloid Polypeptide

在线全文

学校读者我要写书评

暂无评论

Neuroscience Bulletin 2024年第10期40卷 1403-1420页

作者： Nan Zhang xiaoying ma Xinyu He Yaxin Zhang Xin Guo Zhiyuan Shen Xiaosu Guo Danshen Zhang Shujuan Tian Xiaowei ma Yuan Xing Hebei Key Laboratory of Brain Science and Psychiatric-Psychologic Disease The First Hospital of Hebei Medical UniversityShijiazhuang050000China Neuromedical Technology Innovation Center of Hebei Province Department of NeurologyThe First Hospital of Hebei Medical UniversityShijiazhuang050000China College of Chemical and Pharmaceutical Engineering Hebei University of Science and TechnologyShijiazhuang050000China Department of Neurology Hebei HospitalXuanwu Hospital of Capital Medical UniversityShijiazhuang050000China

Excessive secretion of human islet amyloid polypeptide(hIAPP)is an important pathological basis of diabetic encephalopathy(DE).In this study,we aimed to investigate the potential implications of hIAPP in DE *** magnetic resonance imaging and cognitive scales were applied to evaluate white matter damage and cognitive *** found that the concentration of serum hIAPP was positively correlated with white matter damage but negatively correlated with cognitive scores in patients with type 2 diabetes *** vitro assays revealed that oligodendrocytes,compared with neurons,were more prone to acidosis under exogenous hIAPP ***,western blotting and co-immunoprecipitation indicated that hIAPP interfered with the binding process of monocarboxylate transporter(MCT)1 to its accessory protein CD147 but had no effect on the binding of MCT2 to its accessory protein *** differential analysis of proteins co-immunoprecipitated with CD147 in oligodendrocytes revealed Yeast Rab GTPase-Interacting protein 2(YIPF2,which modulates the transfer of CD147 to the cell membrane)as a significant ***,YIPF2 inhibition significantly improved hIAPP-induced acidosis in oligodendrocytes and alleviated cognitive dysfunction in DE model *** findings suggest that increased CD147 translocation by inhibition of YIPF2 optimizes MCT1 and CD147 binding,potentially ameliorating hIAPP-induced acidosis and the consequent DE-related demyelination.

关键词： Diabetic encephalopathy Human islet amyloid polypeptide Oligodendrocytes:Yeast Rab GTPase-interacting protein 2-Monocarboxylate transporters CD147

material-SAM:Adapting SAM for material XCT

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computers, materials & Continua 2024年第3期78卷 3703-3720页

作者： Xuelong Wu Junsheng Wang Zhongyao Li Yisheng Miao Chengpeng Xue Yuling Lang Decai Kong xiaoying ma Haibao Qiao School of materials Science and Engineering Beijing Institute of TechnologyBeijing100081China Senior Engineer at the Simulation Center Citic Dicastal Co.Ltd.Qinhuangdao066010China

X-ray Computed Tomography(XCT)enables non-destructive acquisition of the internal structure of materials,and image segmentation plays a crucial role in analyzing material XCT *** paper proposes an image segmentation method based on the Segment Anything model(SAM).We constructed a dataset of carbide in nickel-based single crystal superalloys XCT images and preprocessed the images using median filtering,histogram equalization,and gamma ***,SAM was fine-tuned to adapt to the task of material XCT image segmentation,resulting in *** compared the performance of threshold segmentation,SAM,U-Net model,and *** method achieved 88.45%Class Pixel Accuracy(CPA)and 88.77%Dice Similarity Coefficient(DSC)on the test set,outperforming SAM by 5.25%and 8.81%,respectively,and achieving the highest ***-SAM demonstrated lower input requirements compared to SAM,as it only required three reference points for completing the segmentation task,which is one-fifth of the requirement of ***-SAM exhibited promising results,highlighting its potential as a novel method for material XCT image segmentation.

关键词： Segment Anything model X-ray computed tomography U-Net Ni-based superalloys foundation models

Asymmetric side-chain engineering of organic semiconductor for ultrasensitive gas sensing

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 2024年第3期35卷 428-433页

作者： xiaoying ma Xiaojuan Dai Lanyi Xiang Jiajun Chang Danfeng Zhi Haozhen Zhao Zhenjie Ni Ye Zou Xike Gao Fengjiao Zhang School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049China Laboratory of Organic Solids Institute of ChemistryChinese Academy of SciencesBeijing 100190China Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China Binzhou Institute of Technology Binzhou 256606China

Molecular structure of organic semiconductor plays a critical role in determining the performance and functionality of organic electronic devices,by optimizing the electrical,optical and physicochemical *** alkyl chains are fundamental units in tailering the solubility and assemblability,among which the asymmetric properties have been reported as key element for controlling the packing motifs and intrinsic charge ***,we expanded the scope of molecular asymmetry dependent sensing features based on a new series of naphthalene diimides(NDI)-based derivatives substituted with a same branching alkyl chain but various linear-shaped alkyl chains(Cn-).A clear molecular stacking change,from head-to-head bilayer to head-to-tail monolayer packing model,is observed based on the features of anisotropic molecular interactions with the change in the chain *** importantly,a unique LUMO level shift of 0.17 eV is validated for NDI-PhC4,providing a record sensitivity up to 150%to 0.01 ppb ammonia,due to the desired molecular reactivity and device amplification *** results indicate that asymmetric side-chain engineering opens a route for breath healthcare.

关键词： Organic thin film transistor Asymmetric side chain Gas sensing Molecular stacking Energy level manipulating

Preliminary Study on Shelf Life of Artificial Feed of Chilo suppressalis

在线全文

学校读者我要写书评

暂无评论

Asian Agricultural Research 2019年第3期11卷 66-67,73页

作者： xiaoying ma Changgeng DAI Yang HU Changsha County Wangyue Park management Office of Hunan Province Institute of Plant Protection Guizhou Academy of Agricultural Sciences

In order to preliminarily explore the preservation effect of ordinary refrigerator( 4℃) on artificial diet of Chilo suppressalis,the effects of artificial feed preserved at refrigerator for different time on percentage of pupation and pupa weight of C. suppressalis were investigated to understand the impact of long-term storage of artificial feed on the growth and development of C. suppressalis. The results showed that the percentage of pupation of C. suppressalis fed with artificial diet that had been stored in refrigerator for 40 d( T40) was highest( 67. 1%),followed by CK( 1 d,63. 5%),and the percentage of pupation of C. suppressalis fed with artificial diet that had been stored in refrigerator for10 d( T10) was 61. 9%. No significant difference was found in percentage of pupation among the treatment groups( P > 0. 05). The female pupa weight of the short-term preservation treatment group( 71. 9 mg) was significantly larger than that of the long-term preservation treatment group( 66. 1 mg)( P 0. 05). The male pupa weight of the short-term preservation treatment group( 51. 2 mg) was significantly larger than that of CK( 47. 7 mg)( P male pupa weight of the long-term preservation treatment group was slightly larger than that of CK( P > 0. 05). In conclusion,the artificial diet of C. suppressalis can be stored for at least 40 d in refrigerator( 4℃).

关键词： Chilo suppressalis Artificial feed Refrigeration Shelf life

Diverse O-methyltransferases catalyze the biosynthesis of floral benzenoids that repel aphids from the flowers of waterlily Nymphaea prolifera

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Horticulture Research 2023年第12期10卷 232-247页

作者： Guanhua Liu Jianyu Fu Lingyun Wang Mingya Fang Wanbo Zhang Mei Yang Xuemin Yang Yingchun Xu Lin Shi xiaoying ma Qian Wang Hui Chen Cuiwei Yu Dongbei Yu Feng Chen Yifan Jiang College of Horticulture Nanjing Agricultural UniversityNanjing 210095China Tea Research Institute Chinese Academy of Agricultural SciencesHangzhou 310008China Provincial Key Laboratory of Characteristic Aquatic Vegetable Breeding and Cultivation Jinhua Academy of Agricultural Sciences(Zhejiang Institute of Agricultural Machinery)Zhejiang Province 321000China Graduate School of Chinese Academy of Agricultural Sciences Beijing100081PR China Hangzhou Tianjing Aquatic Botanical Garden Zhejiang Humanities Landscape Co.Ltd.Hangzhou 310000China Department of Plant Sciences University of TennesseeKnoxvilleTN 37996USA

Nymphaea is a key genus of the ANA grade(Amborellales,Nymphaeales,and Austrobaileyales)of basal flowering plants,which serve as a key model to study the early evolution of floral *** this study,we comprehensively investigated the emission,biosynthesis,and biological function of the floral scent in a night-blossoming waterlily Nymphaea *** headspace volatile collection combined with GC-MS analysis showed that the floral scent of *** is predominately comprised by methylated benzenoids including anisole,veratrole,guaiacol,and ***,the emission of these floral benzenoids in *** exhibited temporal and spatial pattern with circadian rhythm and tissue *** creating and mining transcriptomes of *** flowers,12 oxygen methyltransferases(NpOMTs)were functionally *** in vitro enzymatic assay,NpOMT3,6,and 7 could produce anisole and NpOMT5,7,9,produce guaiacol,whereas NpOMT3,6,9,11 catalyzed the formation of *** was identified as the universal product of all *** patterns of NpOMTs provided implication for their roles in the production of the respective *** analysis of OMTs suggested a Nymphaea-specific expansion of the OMT family,indicating the evolution of lineage-specific *** bioassays,anisole,veratrole,and guaiacol in the floral benzenoids were revealed to play the critical role in repelling waterlily ***,this study indicates that the basal flowering plant *** has evolved a diversity and complexity of OMT genes for the biosynthesis of methylated benzenoids that can repel insects from feeding the *** findings provide new insights into the evolutional mechanism and ecological significance of the floral scent from early-diverged flowering plants.

关键词： catalyzed flowers life

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

明儒颜钧的七日闭关工夫及其三教合一倾向

哲学动态 2005年第3期 56-61页

作者：马晓英中国社会科学院哲学所北京100732

颜钧(1504～1596),号山农,江西永新人,明代后期泰州学派的重要代表人物.泰州学派是阳明后学中具有平民意识和宗教化倾向的学派,其宗教化倾向主要通过工夫实践中对儒释道三教的融摄而得以展现,这一特点在颜钧思想中表现尤为明显.他以原... 详细信息

颜钧(1504～1596),号山农,江西永新人,明代后期泰州学派的重要代表人物.泰州学派是阳明后学中具有平民意识和宗教化倾向的学派,其宗教化倾向主要通过工夫实践中对儒释道三教的融摄而得以展现,这一特点在颜钧思想中表现尤为明显.他以原儒经典为依据,在承袭心学系统静中体验传统的基础上,吸收了佛道二教的一些修养方法,形成一套颇具神秘主义特色的修养工夫--"七日闭关法".本文即以"七日闭关"法为中心,对颜钧思想的三教合一倾向略做探讨.

关键词：三教合一闭关泰州学派儒释道三教代表人物明代后期平民意识阳明后学修养方法修养工夫神秘主义宗教化实践经典原儒心学佛道

在线全文

学校读者我要写书评

暂无评论

图书馆数字化资源安全评估方法研究

图书情报工作 2011年第1期55卷 70-74页

作者：马晓英河北科技师范学院图书馆昌黎066600

针对图书馆数字资源安全综合评估具有的模糊不确定性,在分析影响图书馆数字资源安全因素基础上,给出数字资源安全模糊综合评估的专家、熵、拟熵三种不同赋权法的综合评价算法。结合实例,通过编制matlab程序实现计算机求解。研究表明,拟... 详细信息

针对图书馆数字资源安全综合评估具有的模糊不确定性,在分析影响图书馆数字资源安全因素基础上,给出数字资源安全模糊综合评估的专家、熵、拟熵三种不同赋权法的综合评价算法。结合实例,通过编制matlab程序实现计算机求解。研究表明,拟熵赋权法优于专家赋权和熵值赋权法,为数字资源安全评估提供一个实用可行的评价方法。

关键词：数字化资源安全评估方法熵权拟熵权 matlab程序动态赋权