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Robust twin-field quantum key distribution through sending or not sending

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National Science Review 2023年第4期10卷 76-85页

作者： cong jiang Zong-Wen Yu Xiao-Long Hu Xiang-Bin Wang Jinan Institute of Quantum Technology State Key Laboratory of Low Dimensional Quantum Physics Department of Physics Tsinghua University Data Communication Science and Technology Research Institute School of Physics State Key Laboratory of Optoelectronic Materials and Technologies Sun Yat-sen University Shanghai Branch CAS Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum Physics University of Science and Technology of China Shenzhen Institute for Quantum Science and Engineering and Physics Department Southern University of Science and Technology Frontier Science Center for Quantum Information

The sending-or-not-sending(SNS) protocol is one of the most major variants of the twin-field(TF)quantum key distribution(QKD) protocol and has been realized in a 511-km field fiber, the farthest field experiment to date. In practice, however, all decoy-state methods have unavoidable source errors, and the source errors may be non-random, which compromises the security condition of the existing TF-QKD protocols. In this study, we present a general approach for efficiently calculating the SNS protocol’s secure key rate with source errors, by establishing the equivalent protocols through virtual atenuation and the tagged model. This makes the first result for TF QKD in practice where source intensity cannot be controlled exactly. Our method can be combined with the two-way classical communication method such as active odd-parity pairing to further improve the key rate. The numerical results show that if the intensity error is within a few percent, the key rate and secure distance only decrease marginally. The key rate of the recent SNS experiment in the 511-km field fiber is still positive using our method presented here, even if there is a ±9.5% intensity fluctuation. This shows that the SNS protocol is robust against source errors.

关键词： quantum information quantum key distribution sending or not sending twin field source error

Risk assessment and landslide prevention design using numerical modelling——A case study in Qingliu,China

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Journal of Mountain Science 2023年第4期20卷 943-961页

作者： LI cong-jiang HU Yu-xiang jiang Nan LI Hai-bo ZHOU Jia-wen State Key Laboratory of Hydraulics and Mountain River Engineering Sichuan UniversityChengdu610065China College of Water Resource and Hydropower Sichuan UniversityChengdu610065China

Numerous Quaternary deposits are existed in the mountainous areas of Southwest China,especially in the transition zone between the QinghaiTibet Plateau and the Sichuan Basin,where strong tectonic movements and frequent climatic changes increase the potential *** possible deformation and failure process of potential landslides and their impacts on the surrounding environment are important research *** investigation and monitoring indicate that the Qingliu landslide in Xiameng town,Li County,Sichuan Province,China has been continuously deforming since August *** deformation zone has a maximum deformation depth of approximately 18.9m,a total area of 54,628 m2,and a volume of 34.0×104 m3,which seriously threatens infrastructure projects and *** a result,understanding the Qingliu landslide evolution process,assessing the hazard risk,and planning disaster prevention measures are of great significance for reducing disaster *** this study,the mass movement process and hazard risk of the Qingliu landslide are evaluated,and the effects of different prevention measures are compared and *** using the depth-integrated method,the mass movement of the Qingliu landslide is *** numerical simulation results indicate that the maximum velocity of the Qingliu landslide is approximately 37.5 m/s,and the duration of the landslide is approximately *** simulated landslide can eventually form a deposited mass with a maximum deposit thickness of 19.4 m and an area of approximately 60,168.3 m2,thereby blocking the river and burying ***,a risk assessment of the Qingliu landslide under different forms of protection measures is also produced and discussed by considering the hazard level and economic vulnerability level of the affected *** three layers of anti-slide piles on the deformation zone to reduce the hazard risk of the Qingliu landslide is a better *** results may be useful for planning preventio

关键词： Qingliu landslide Numerical simulation Mass movement Risk assessment Prevention measures

Biomass chemical looping gasification for syngas production using modified hematite as oxygen carriers

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Journal of Environmental Sciences 2023年第3期125卷 171-184页

作者： cong jiang Xiaoyu Jin Tingting Xu Bo Xiao Zhiquan Hu Xun Wang School of Environmental Science and Engineering Huazhong University of Science and TechnologyWuhan 430074China State Key Laboratory of Coal Combustion Huazhong University of Science and TechnologyWuhan 430074China

Syngas is a clean energy carrier and a major industrial feedstock. In this paper, syngas was produced via biomass chemical looping gasification(CLG) process. Hematite, the most common Fe-based oxygen carrier(OC), was modified with different metal oxides(CeO_(2), CaO and MgO) by the impregnation method. The hematite modified by CeO_(2), CaO and MgO was namely as CeO_(2)-hematite(CeO_(2)-H), CaO-hematite(CaO-H) and MgO-hematite(MgO-H), respectively. The introduction of CeO_(2), CaO and MgO enhanced the reactivity of lattice oxygen of hematite. The optimum condition for syngas production had been explored as the mass ratio of oxygen carrier to biomass(O/B) of 0.2, the mass ratio of steam to biomass(S/B) of0.75 and temperature of 800℃in the biomass CLG process. The CeO_(2)-H exhibited the most wonderful performance compared to that for CaO-H and MgO-H. The crystal composition of OC influenced greatly in the CLG process. CeFeO_(3)had a good oxygen mobility property and lattice oxygen releasing capacity due to the most oxygen vacancy distributed on the OC surface and the most active lattice oxygen, which is conducive to the biomass chemical looping gasification process for syngas production, leading to the highest gasification efficiency of 95.86% and gas yield of 1.20 m^(3)/kg of the three. Cyclic test proved that CeO_(2)-H had well sintering resistance and cyclic performance.

关键词： Chemical looping gasification Oxygen carrier Syngas Modified hematite Pine sawdust

Impurities evaporation from metallurgical-grade silicon in electron beam melting process

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Rare Metals 2011年第3期30卷 274-277页

作者： WANG Qiang DONG Wei TAN Yi jiang Dachuan ZHANG cong PENG Xu School of Materials Science and Engineering Dalian University of Technology Dalian 116024 China

The purification of metallurgical-grade silicon （MG-Si） has been investigated during electron beam melting （EBM） process. The results show that the phosphorus, calcium and aluminum contents decrease significantly after melting, and magnesium is partially removed. However, no significant change in content for boron and iron has been found. Langmuir＇s equation and Henry law were used to derive the removal effi-ciency for each impurity element. The free surface temperature was estimated by the Hertz-Knudsen-Langmuir equation and silicon＇s vapor pressure equation. Good agreement was found between measured and calculated impurities＇ removal efficiency for phosphorus, calcium and aluminum, magnesium, boron and iron. The deviation between the two results was also analyzed in depth.

关键词： electron beam melting silicon evaporation impurities removal efficiency

Copper-based nanomaterials as peroxidase candidates for intelligent colorimetric detection and antibacterial applications

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Particuology 2024年第1期84卷 126-135页

作者： Yanyan Huang Huimin Zhong cong jiang Jiahui Yang Jingwen Zhang Fei Zhao Chaoqun Liu College of Light Industry and Food Engineering Nanjing Forestry UniversityNanjing210037China College of Pharmacy Institutes of Environment and MedicineHenan UniversityKaifeng475004China

With natural polyphenol compound tannic acid(TA)as the ingredient,copper tannate(CuTA)nanolayer material was formed by self-assembly under the conditions of heating and copper *** ion and tannic acid could coordinate to form Cu-O-C structure which was similar to the Fe-N-C structure of natural heme *** addition,the obtained CuTA nanomaterial possessed excellent peroxidase-like catalytic activity and *** on this excellent enzymatic activity,CuTA nanomaterials could be used for colorimetric detection of hydrogen peroxide with a smartphone and decomposition of organic *** on the structural characteristics and catalytic activity,the copper tannate nanozymes could also serve as potential antibacterial reagents to effectively inhibit the growth of gram-negative and positive bacteria in a low hydrogen peroxide *** work may promote the exploration of novel peroxidase mimetics and broaden the applications of nanozymes.

关键词： Nanozyme Colorimetric detection Smartphone Antibacteria

Rock roadway complementary support technology in Fengfeng mining district

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International Journal of Mining Science and Technology 2014年第6期24卷 791-798页

作者： Zeng Xiantao jiang Yaodong jiang cong Ma Zhenqian Zhan Shaojian Zhang Kexue He Changhai School of Mechanics and Civil Engineering China University of Mining and Technology JCHX Mining Construction Group Co. Ltd. School of Resources and Safety Engineering China University of Mining and Technology Fengfeng Group Co. Ltd.

This paper takes No.52 return uphill roadway of Yangquhe coal mine as a research project. Based on the research, especially its geological condition, indoor experiments, numerical simulation and theoretical analysis were employed to determine the difficult coefficients of Yangquhe project. By using these means,the difficult coefficients of the deep rock engineering were determined. From a study of the effects of crustal stress and the roof mechanism on roadway stability, the transformation mechanism in Yangquhe coal mine has been determined. As a result of this research, the interactive support technology of prestressed cable mesh was developed and the technology tested in mining engineering, which proved to be feasible.

关键词： Deep mining Return airway Destruction mechanism High strength Complementary support

PCAF and SIRT1 modulateβTrCP1 protein stability in an acetylation-dependent manner

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Journal of Genetics and Genomics 2021年第7期48卷 652-655页

作者： Fabin Dang cong jiang Tao Zhang Hiroyuki Inuzuka Wenyi Wei Department of Pathology Beth Israel Deaconess Medical CenterHarvard Medical SchoolBostonMA 02215USA

Ubiquitination plays critical roles in regulating various physiological events,such as protein degradation,activation,secretion,sorting and trafficking(Dang et al.,2021).The ubiquitination process involves three major steps,catalyzed by ubiquitin-activating enzymes(E1s),ubiquitin-conjugating enzymes(E2s),and ubiquitin ligases(E3s),respectively(Scheffner et al.,1995).

关键词： stability steps catalyzed

Amorphous Sb/C composite with isotropic expansion property as an ultra-stable and high-rate anode for lithium-ion batteries

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Rare Metals 2024年第5期43卷 2039-2052页

作者： Ze-Zhou Yang Cheng-Yi Zhang Yu-Qing Ou Zhi-Kang Su Yan Zhao Heng-jiang cong Xin-Ping Ai jiang-Feng Qian Hubei Key Laboratory of Electrochemical Power Sources College of Chemistry and Molecular SciencesWuhan UniversityWuhan430072China Institute of Technological Sciences Wuhan UniversityWuhan 430072China

Antimony(Sb)is an intriguing anode material for Li-ion batteries(LIBs)owing to its high theoretical capacity of 660 m Ah·g^(-1)and appropriate working potential of~0.8 V(***^(+)/Li).However,just like all alloying materials,the Sb anode suffers from huge volume expansion(230%)during repeated insertion/extraction of Li+ions,resulting in structural deterioration and rapid capacity *** this work,a novel amorphous Sb/C composite with atomically dispersed Sb particles in carbon matrix is prepared via a straightforward high-energy ball milling *** intimate intermixing of amorphous Sb with C provides homogeneous element distribution and isotropic volume expansion during cycling,resulting in persistent structural ***,the disordered structure of amorphous material shortens the diffusion distance of lithium ions/electrons,promoting fast reaction kinetics and rate *** from the aforementioned effects,the amorphous Sb/C exhibits a high reversible capacity of537.4 m Ah·g^(-1)at 0.1 A·g^(-1)and retains 201.0 m Ah·g^(-1)at an ultrahigh current rate of 10.0 A·g^(-1).Even after 1500deep cycles at 2.0 A·g^(-1),the amorphous Sb/C electrode still maintains 86.3%of its initial capacity,which outperforms all existing Sb-based anodes reported so *** analysis further reveals a greatly reduced volume variation of merely 34.6%for the amorphous Sb/C electrode,much lower than that of 223.1%for crystalline Sb *** study presents a new approach to stabilizing Sb-based alloy anodes and contributes to the construction of high-performance amorphous anode materials for LIBs,enabling advanced energy storage.

关键词： Amorphous Sb/C anode Homogeneous element distribution Isotropic volume expansion Ultra-long cycle stability High-rate capability Lithium-ion battery

Flushing as atypical initial presentation of functional gallbladder neuroendocrine carcinoma: A case report

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World Journal of Gastroenterology 2020年第6期26卷 686-695页

作者： Ming Jin Bo Zhou Xiong-Ling jiang Qi-Yi Zhang Xiang Zheng Yuan-cong jiang Sheng Yan Department of General Surgery Second Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhou 310009Zhejiang ProvinceChina Department of Pathology First Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhou 310003Zhejiang ProvinceChina

BACKGROUND Neuroendocrine neoplasms are rarely located in the gallbladder(GB),and carcinoid syndrome is exceedingly rare in patients with GB neuroendocrine *** SUMMARY We report a case of GB neuroendocrine carcinoma(GB-NEC)in a 65-year-old man,who presented with flushing for 2 *** specimens of the flushed skin revealed that mucin was deposited between the collagen bundles in the *** tomography and magnetic resonance imaging indicated neoplasm in the GB with liver invasion and enlarged lymph nodes in the portacaval *** fluorodeoxyglucose uptake was detected in lymph nodes in the portacaval space,but distant metastasis was not seen by positron emission ***-guided needle biopsy of the GB neoplasm was suggestive of high-grade *** of the functional characteristics of poorly differentiated NEC,en bloc cholecystectomy,resection of hepatic segments IVb and V,pancreaticoduodenectomy,and regional lymphadenectomy were performed.A diagnosis of poorly differentiated NEC was made by pathological findings and immunohistochemical staining ***-67 index was>80%.The patient refused adjuvant therapy and passed away in the 7th *** Distinctive manifestation combined with imaging helps make correct preoperative *** surgery and adjuvant chemotherapy might improve prognosis.

关键词： Malignant carcinoid syndrome Neuroendocrine tumors Carcinoma Gallbladder Carcinoid tumor Case report