检索结果-南通市图书馆

Weak blind quantum signature protocol based on entanglement swapping

在线全文

学校读者我要写书评

暂无评论

Photonics Research 2015年第6期3卷 324-328页

作者： Minghui Zhang huifang li School of Electronic and Information Northwestern Polytechnical University

In this paper, we put forward a weak blind quantum signature scheme based on quantum entanglement swapping of Bell states. Different from the existing quantum signature schemes, our scheme can offer two-step verification security services to ensure the validity of the verification. In order to guarantee the unconditional security of the scheme, the quantum key distribution protocol and one-time pad encryption algorithm are employed in our scheme. Besides, the entanglement swapping of Bell states mechanism enhances the security of verification criteria. The proposed scheme has the properties of nonforgeability, nonrepudiation, lindness,and traceability.

关键词： Bell Weak blind quantum signature protocol based on entanglement swapping QKD

Optical and magnetic properties of transition-metal ions in tetrahedral and octahedral compounds

在线全文

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2011年第10期54卷 1796-1800页

作者： li huifang WANG HuaiQian KUANG XiaoYu College of Engineering Huaqiao University Quanzhou 362021 China Institute of Atomic and Molecular Physics Sichuan University Chengdu 610065 China International Centre for Materials Physics Chinese Academy of Sciences Shenyang 110016 China

This paper presents the complete energy matrix of the 3d2system containing the electron-electron interaction, the ligand-fieldinteraction, the spin-orbit coupling interaction, and the Zeeman interaction, in which the optical spectra and g-factor of V3+andTi2+ions in the series of tetrahedral AIIBVI(AII=Zn, Cd, BVI=S, Se, Te) semiconductor materials are determined. In the inves-tigation of the optical and magnetic properties of these transition-metal ions in the tetrahedral coordination complexes, wecompared the data obtained from the transition-metal ions in the tetrahedral coordination complexes with those obtained fromthe corresponding ions in the octahedral ones, and found that the tetrahedral complexes have weaker crystal-field strength, in-verse energy level ordering and stronger covalence effect.

关键词： EPR and optical spectra complete energy matrix ligand-field theory tetrahedral coordination complexes octahedralcomplexes transition-metal ions

Understanding of mineral change mechanisms in coal mine groundwater reservoir and their influences on effluent water quality:a experimental study

在线全文

学校读者我要写书评

暂无评论

International Journal of Coal Science & Technology 2021年第1期8卷 154-167页

作者： Kai Zhang huifang li Jiaming Han Binbin Jiang Ju Gao School of Chemical and Environmental Engineering China University of Mining and TechnologyBeijingBeijing100083China State Key Laboratory of Water Resource Protection and Utilization in Coal Mining Beijing102211China

This paper presents results of an experimental study to characterize the law of mineral change of fallen rock in coal mine groundwater reservoir ant its influence on water *** minerals of the underground reservoir of Daliuta Coal Mine is taken as the research *** experiments were designed and conducted to simulate water–rock action in the *** mineral composition was analyzed by X-ray diffractometer(XRD),the surface morphology of the mineral was analyzed by scanning electron microscope(SEM),and the specific surface area,total pore volume and average pore diameter of the mineral were measured by fast specific surface/pore analyzer(BET).The experimental results show that the sandstone and mudstone in the groundwater reservoir of Daliuta Coal Mine account for 70%and 30%,*** pore diameter is 15.62–17.55 nm,and pore volume is 0.035 cc/*** pore structure is a key factor in the occurrence of water–rock *** to the water–rock simulation experiment,the quartz content before the water–rock action is about 34.28%,the albite is about 21.84%,the feldspar is about 17.48%,and the kaolinite is about 8.00%.After the water–rock action,they are 36.14%,17.78%,11.62%,and 16.75%,*** content of albite and orthoclase is reduced while the content of kaolinite is increased,that is,the Na+content becomes higher,and the Ca2+and Mg2+contents become *** research builds a good theoretical foundation for revealing the role of water and rock in underground coal reservoirs.

关键词： Coal mine underground reservoir Fallen rock Water-rock interaction Rock composition

Activated carbon fibers with manganese dioxide coating for flexible fiber supercapacitors with high capacitive performance

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

Journal of Energy Chemistry 2019年第4期28卷 95-100页

作者： huifang li Jiachen liang Huan li Xiaoyu Zheng Ying Tao Zheng-Hong Huang Quan-Hong Yang Nanoyang Group School of Chemical Engineering and Technology Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin University Institute of Forensic Science Ministry of Public Security Laboratory of Advanced Materials School of Materials Science and Engineering Tsinghua University

Fiber supercapacitor(FSC)is a promising power source for wearable/stretchable electronics and high capacitive performance of FSCs is highly desirable for practice flexible ***,we report a composite of manganese dioxide(Mn O_2)and activated carbon fibers(ACFs)with high MnO_2mass loading and microporous structure(abbreviated as Mn O_2@ACF),which is used as a fiber electrode to produce a FSC with a high capacitive performance and a good *** MnO_2@ACF composite electrode in FSCs delivers an ultrahigh specific capacitance of 410 mF/cm^2at 0.1 mA/cm^2,corresponding to a high energy density of 36μWh/cm^2and high power density of 726μW/cm^*** high capacitive performance and simple fabrication method indicates that the Mn O_2@ACF composite is a very promising electrode material for flexible fiber supercapacitors.

关键词： Fiber supercapacitors Activated carbon fibers Mass loading Flexibility

TaZIM-A1 negatively regulates flowering time in common wheat(Triticum aestivum L.)

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Plant Biology 2019年第3期61卷 359-376页

作者： Hong liu Tian li Yamei Wang Jun Zheng huifang li Chenyang Hao Xueyong Zhang College of Agricultural Sciences Nanjing Agricultural University Key Laboratory of Crop Gene Resources and Germplasm Enhancement Ministry of Agriculture Institute of Crop Science the Chinese Academy of Agricultural Sciences

Flowering time is a critical determinant of regional adaptation for crops and has strong effects on crop yields. Here, we report that TaZIM-A1, an atypical GATAlike transcription factor, is a negative regulator of flowering in wheat. TaZIM-A1 possessed weak transcriptional repression activity, with its CCT domain functioning as the major inhibitory region. TaZIM-A1 expression exhibited a typical circadian oscillation pattern under various light *** of TaZIM-A1 caused a delay in flowering time and a decrease in thousand-kernel weight(TKW) in wheat under long-day conditions. Moreover, TaZIM-A1 directly bound to the promoters of TaCO-1 and TaFT-1 and downregulated their expression. Sequence analysis of a collection of common wheat cultivars identified three and two haplotypes for TaZIM-A1 and TaZIM-B1, respectively. Association analysis revealed that TaZIM-A1-HapI/-HapIII and TaZIMB1-HapI have undergone strong positive selection during modern wheat breeding, likely due to their association with earlier heading and higher TKW. Diagnostic markers were developed for these haplotypes that can be used for wheat cultivar improvement, via marker-assisted breeding.

关键词： Flowering time critical determinant transcriptional

Single-atom Zn for boosting supercapacitor performance

在线全文

学校读者我要写书评

暂无评论

Nano Research 2022年第3期15卷 1715-1724页

作者： Zongge li Danni Wang huifang li Mang Ma Ying Zhang Zifeng Yan Stefano Agnoli Guoxin Zhang Xiaoming Sun State Key Laboratory of Heavy Oil Processing China University of Petroleum(East China)Qingdao 266580China Al-ion Battery Research Center Department of Electrical Engineering and AutomationShandong University of Science and TechnologyQingdao 266590China State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing 100029China Department of Chemical Sciences University of PadovaVia Marzolo 1Padova I-35131Italy College of Electromechanical Engineering Shandong Engineering Laboratory for Preparation and Application of High-performance CarbonMaterialsQingdao University of Science&TechnologyQingdao 266061China

Single-atom metal-incorporated carbon nanomaterials(CMs)have shown great potential towards broad catalytic *** this work,we show that N-doped porous CMs embedded with redox-able Zn atoms exhibit superior capacitive *** Zn(~2.72 at.%)/N(~12.51 at.%)doping were realized by incorporating Zn2+and benzamide into the condensation and carbonization of formamide and subsequent annealing at 900℃.The Zn and N species are mutually benefited during the formation of ZnN4 *** as-obtained Zn1NC material affords a very large capacitance of 621 F·g^(−1)(at 0.1 A·g^(−1)),superior rate capability(~65%retention at 100 A·g^(−1)),and excellent cycling stability(0.00044%per cycle at 10 A·g^(−1)).These merits are attributed to the high Zn/N loading,atomic Zn-boosted pseudocapacitive behavior,large specific surface area(~1,085 m^(2)·g^(−1)),and rich pore hierarchy,thus ensuring both large pseudo-capacitance(e.g.,~37.9%at 10 mV·s^(−1))and double-layer *** of establishing a new type of high Zn/N-loading carbon materials,our work uncovers the capacitive roles of atomically dispersed metals in CMs.

关键词： atomic dispersion zinc doping nitrogen doping carbon nanomaterial supercapacitor

Microorganisms desulfurization of coal

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

Journal of Environmental Sciences 1993年第1期5卷 83-89页

作者： Zhong huifang and li YaqinInstitute of Microbiology, Chinese Academy of Sciences, Beijing 100080, China

A culture of Thiobacillus ferrooxidans strain T-4, isolated from Song Zao Coal Mining, China, is able to use pyrite from coal as a source of energy. The bacterial culture solution with 108 -109 cells/ml, pH 1.55 - 1.70 was employed in the nine coal samples with -200 mesh have been studied at initial pH 1.7.30℃ , 20-30% coal pulp density. The bacterial removal sulfur from coal in samples 3, 4, 6 and 7 were reduced to 1.05 - 1.33% and 86.11% of pyritic sulfur can be removed in 4-24 hours.

关键词： Thiobacillus ferrooxidans microorganisms desulfurization.

Deep Multimodal Learning and Fusion Based Intelligent Fault Diagnosis Approach

在线全文

学校读者我要写书评

暂无评论

Journal of Beijing Institute of Technology 2021年第2期30卷 172-185页

作者： huifang li Jianghang Huang Jingwei Huang Senchun Chai Leilei Zhao Yuanqing Xia Key Laboratory of Complex System Intelligent Control and Decision Beijing Institute of TechnologyBeijing 100081China

Industrial Internet of Things(IoT)connecting society and industrial systems represents a tremendous and promising paradigm *** IoT,multimodal and heterogeneous data from industrial devices can be easily collected,and further analyzed to discover device maintenance and health related potential knowledge *** data-based fault diagnosis for industrial devices is very helpful to the sustainability and applicability of an IoT *** how to efficiently use and fuse this multimodal heterogeneous data to realize intelligent fault diagnosis is still a *** this paper,a novel Deep Multimodal Learning and Fusion(DMLF)based fault diagnosis method is proposed for addressing heterogeneous data from IoT environments where industrial devices ***,a DMLF model is designed by combining a Convolution Neural Network(CNN)and Stacked Denoising Autoencoder(SDAE)together to capture more comprehensive fault knowledge and extract features from different modal ***,these multimodal features are seamlessly integrated at a fusion layer and the resulting fused features are further used to train a classifier for recognizing potential ***,a two-stage training algorithm is proposed by combining supervised pre-training and fine-tuning to simplify the training process for deep structure models.A series of experiments are conducted over multimodal heterogeneous data from a gear device to verify our proposed fault diagnosis *** experimental results show that our method outperforms the benchmarking ones in fault diagnosis accuracy.

关键词： fault diagnosis deep learning multimodal heterogeneous data multimodal fused features

An Improved Dropout Method and its Application into DBN-based Handwriting Recognition 36

在线全文

学校读者我要写书评

暂无评论

An Improved Dropout Method and its Application into DBN-base...