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Quantum-Enhanced Blockchain: A Secure and Practical Blockchain Scheme

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Computers, Materials & Continua 2023年第7期76卷 259-277页

作者： Ang Liu xiu-bo Chen Gang Xu Zhuo Wang Xuefen Feng Huamin Feng Information Security Center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and TelecommunicationsBeijing100876China Network and Information Management Division Beijing Electronic Science and Technology InstituteBeijing100070China School of Information Science and Technology North China University of TechnologyBeijing100144China School of Artificial Intelligence Beijing University of Posts TelecommunicationsBeijing100876China Mathematics Teaching and Research Center Beijing Fengtai Yihai High SchoolBeijing100070China General Office Beijing Electronic Science and Technology InstituteBeijing100070China

The rapid advancement of quantum technology poses significant security risks to blockchain systems.However,quantum technology can also provide solutions for enhancing blockchain security.In this paper,we propose a quantum-enhanced blockchain scheme to achieve a high level of security against quantum computing attacks.We first discuss quantum computing attacks on classic blockchains,including attacks on hash functions,digital signatures,and consensus mechanisms.We then introduce quantum technologies,such as a quantum hash function(QHF),a quantum digital signature(QDS),and proof of authority(PoA)consensus mechanism,into our scheme to improve the security of the blockchain system.Our security analysis demonstrates that our scheme offers superior security against quantum and classic attacks.Finally,we compare our scheme with previous works,showing that our scheme has achieved a perfect balance in terms of practicality,reliability,scalability,and efficiency.Overall,this work contributes to the ongoing research on quantum blockchain in the quantum era.

关键词： Quantum blockchain quantum hash function quantum digital signature

One-pot synthesis of Pd-Au-alloy-nanoparticle-decorated graphene oxide functionalized with dodecahydrododecaborate cluster for rapid and complete reduction of 4-nitrophenol at room temperature

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Rare Metals 2023年第11期42卷 3622-3629页

作者： Yu-bo Ma Yu-Wen Wang Da-Feng Zhang xiu-xiu Jia Yin Wang Shu-Xing Zhou Thomas Wagberg Guang-Zhi Hu School of Chemical Engineering Chongqing Chemical Industry Vocational CollegeChongqing401220China School of Materials and Energy Institute for Ecological Research and Pollution Control of Plateau LakesYunnan UniversityKunming650504China School of Materials Science and Engineering Liaocheng UniversityLiaocheng252000China Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices Hubei University of Arts and ScienceXiangyang441053China Department of Physics UmeåUniversity90187UmeåSweden

The treatment of nitroaromatics in wastewater is a significant issue that must be addressed because of their high cytotoxicity.The catalytic reduction of 4-nitrophenol(4-NP)to the widely used 4-aminophenol(4-AP)is an excellent method for 4-NP removal.However,performing this reaction is difficult.In this study,two-dimensional(2D)graphene oxide(GO)with oxygen-containing surface groups was used as a substrate for the in situ anchoring ofPdAu alloy nanocrystals.

关键词： alloy rapid cluster

A large basal cell adenoma extending to the ipsilateral skull base and mastoid in the right parotid gland: A case report

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World Journal of Clinical Cases 2019年第11期7卷 1351-1357页

作者： Lu-Yang du xiu-Hong Weng Zhen-Yu Shen bo Cheng Department of Stomatology Union Hospital Tongji Medical College HuaZhong University of Science and Technology Wuhan 430022 Hubei Province China Department of Stomatology Zhongnan Hospital of Wuhan University Wuhan 430071 Hubei Province China

BACKGROUND Basal cell adenoma (BCA) is a rare benign tumour that has unique histological characteristics and primarily arises in the parotid glands. According to published reports, nearby tissue destruction by BCA seems impossible. CASE SUMMARY We presented a case of a 54-year-old woman with a mass in the deep lobe of the right parotid gland involving the ipsilateral skull base and mastoid. The patient exhibited gradual right facial swelling but no other obvious symptoms. Combined resection of the total right parotid gland and partial skull base excision were performed. The biopsy conducted before the surgery and sections cut from intraoperatively obtained tissues were not definitive for identifying the character of the neoplasm. A final diagnosis of tubular BCA without malignant elements was established based on postoperative pathology results and immunohistochemical analysis. The tumour did not recur during the 12-mo follow-up period. CONCLUSION A diagnosis of BCA can only be established based on a histopathological examination after an excisional biopsy, and tubular BCA should carefully be considered as a destructive type.

关键词： Basal cell adenoma Mastoid Parotid gland Skull base Total parotidectomy Case report

结直肠癌患者KDM6A蛋白表达与基因突变及错配修复的关系

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诊断病理学杂志 2024年第3期31卷 203-207页

作者：武景波刘慧李小静刘秀萍复旦大学附属上海市第五人民医院病理科上海200240

目的探讨结直肠癌(CRC)组织中KDM6A蛋白表达与KRAS/NRAS/BRAF/PIK3CA基因突变及DNA错配修复(MMR)的关系。方法收集111例手术切除CRC患者的标本,通过免疫组织化学检测KDM6A蛋白及DNA错配修复相关蛋白(MLH1、MSH2、MSH6和PMS2)表达,通过... 详细信息

目的探讨结直肠癌(CRC)组织中KDM6A蛋白表达与KRAS/NRAS/BRAF/PIK3CA基因突变及DNA错配修复(MMR)的关系。方法收集111例手术切除CRC患者的标本,通过免疫组织化学检测KDM6A蛋白及DNA错配修复相关蛋白(MLH1、MSH2、MSH6和PMS2)表达,通过扩增阻碍突变系统(ARMS)法检测KRAS/NRAS/BRAF/PIK3CA基因突变,通过统计学分析KDM6A蛋白表达与KRAS/NRAS/BRAF/PIK3CA基因突变、MMR及临床病理特征、预后关系,并通过TCGA数据库CRC数据对预后进行验证分析。结果KDM6A表达率在基因突变CRC患者中显著升高,KDM6A表达患者多为错配修复完整(pMMR)(P<0.05)。有脉管侵犯CRC患者的KDM6A表达率显著高于无脉管侵犯者(P<0.05)。KDM6A阳性组和阴性组CRC患者总生存期(OS)差异无统计学意义(P=0.470)。结论CRC患者中KDM6A表达与KRAS/NRAS/BRAF/PIK3C基因突变有关,更常见于pMMR患者,更易发生于有脉管侵犯患者,但与患者预后无关。

关键词：结直肠癌 KDM6A 基因突变错配修复预后

钴配合物催化CO_(2)氢化为甲醇的“氢质子和氢负离子”同时转移机理

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西北师范大学学报（自然科学版） 2024年第2期60卷 58-64页

作者：闫秀丽赵雪乔石博郝勇静河北工程大学材料科学与工程学院河北邯郸056038 河北工程大学建筑与艺术学院河北邯郸056038 河北师范大学化学与材料科学学院河北石家庄050024

全球二氧化碳(CO_(2))过度排放,由此引发的温室效应日益严峻.将CO_(2)选择性加氢为甲醇,可以将丰富、安全的碳源转化为有价值的化学品和燃料.文中采用密度泛函理论对半三明治结构钴配合物催化CO_(2)加氢制甲醇的反应机理及新型催化剂的... 详细信息

全球二氧化碳(CO_(2))过度排放,由此引发的温室效应日益严峻.将CO_(2)选择性加氢为甲醇,可以将丰富、安全的碳源转化为有价值的化学品和燃料.文中采用密度泛函理论对半三明治结构钴配合物催化CO_(2)加氢制甲醇的反应机理及新型催化剂的设计进行计算研究.计算结果表明,形成甲二醇分子时金属Co上的氢负离子和吡啶配体中的氢质子同时转移至甲酸分子上的过程是该反应的决速步,总反应能垒为122.2 kJ·mol^(-1)(2→TS 8,11).此外,通过不同的取代基取代酰胺氮原子和吡啶配体上的氢原子,设计了6种钴配合物,计算预测了它们催化CO_(2)加氢到甲醇的活性.在所有新提出的钴配合物中,1a,1b,1c有潜力在温和条件下高效催化CO_(2)加氢到甲醇,它们的总自由能垒分别为107.5,109.2和111.7 kJ·mol^(-1).

关键词：二氧化碳催化加氢密度泛函理论反应机理催化剂设计

骨化三醇胶丸联合胰激肽原酶对2型糖尿病微血管并发症患者外周血Hcy、RBP4、SAA水平的影响

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临床和实验医学杂志 2024年第1期23卷 36-41页

作者：曾秀伟尚士博赵艳荣杨玲秦皇岛市第二医院内分泌科河北秦皇岛066600 秦皇岛市第二医院消化科河北秦皇岛066600 秦皇岛市第二医院肿瘤科河北秦皇岛066600

目的观察骨化三醇胶丸联合胰激肽原酶对2型糖尿病微血管并发症患者外周血同型半胱氨酸(Hcy)、视黄醇结合蛋白4(RBP4)、淀粉样蛋白A(SAA)水平的影响。方法前瞻性选取2020年1月至2022年12月秦皇岛市第二医院收治的104例2型糖尿病微血管并... 详细信息

目的观察骨化三醇胶丸联合胰激肽原酶对2型糖尿病微血管并发症患者外周血同型半胱氨酸(Hcy)、视黄醇结合蛋白4(RBP4)、淀粉样蛋白A(SAA)水平的影响。方法前瞻性选取2020年1月至2022年12月秦皇岛市第二医院收治的104例2型糖尿病微血管并发症患者为对象,采用随机数字表法分为常规组(n=52)和骨化三醇组(n=52)。两组均接受利拉鲁肽治疗,常规组加用胰激肽原酶治疗,骨化三醇组在常规组基础上联合骨化三醇胶丸治疗。比较两组糖代谢(空腹血糖、餐后2 h血糖)、Hcy、RBP4、SAA、正五聚蛋白3(PTX3)及骨代谢指标[25-羟基维生素D(25(OH)D)、骨碱性磷酸酶(BAP)、骨保护素(OPG)、Ⅰ型前胶原氨基端延长肽(P1NP)、Ⅰ型前胶原氨基端延长肽(β-CTX)、碱性磷酸酶(ALP)]的水平差异,统计两组不良反应发生情况。结果治疗后,两组的空腹血糖、餐后2 h血糖均较治疗前降低,差异均有统计学意义(P0.05)。治疗后,骨化三醇组和常规组的Hcy、RBP4、SAA、PTX3水平均较治疗前降低,差异均有统计学意义(P0.05);骨化三醇组25(OH)D、BAP、OPG水平分别为(21.89±2.23)ng/mL、(38.98±4.74)μg/L、(312.52±34.41)ng/L,均高于常规组[(18.96±2.41)ng/mL、(31.52±4.06)μg/L、(279.96±31.04)ng/L],骨化三醇组P1NP、β-CTX、ALP水平分别为(41.66±4.26)ng/mL、(0.38±0.11)ng/mL、(5.08±0.89)U/L,均低于常规组[(45.89±5.01)ng/mL、(0.46±0.14)ng/mL、(6.61±1.21)U/L],差异均有统计学意义(P0.05)。结论骨化三醇胶丸联合胰激肽原酶治疗2型糖尿病微血管并发症可改善患者骨代谢指标,降低患者血清Hcy、RBP4、SAA、PTX3水平,且不增加不良反应。

关键词： 2型糖尿病骨化三醇胶丸胰激肽原酶微血管并发症骨代谢

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山区采动地表异常形变识别与损害原因

科学技术与工程 2024年第14期24卷 5775-5782页

作者：张岩孙全帅徐书名谭秀全胡波周鸿杨静刁鑫鹏山东省鲁南地质工程勘察院/山东省地质矿产勘查开发局第二地质大队济宁272100 中国矿业大学环境与测绘学院徐州221116 武汉大学测绘学院武汉430072 宁夏回族自治区地球物理地球化学调查院银川750001

现有开采损害鉴定的研究成果主要针对平原区域,缺少对高强度开采条件下山区地表建(构)筑物损坏的研究。以山西省冶头村建筑的异常损害为例,首先基于短基线集差分干涉测量技术(small baselines subset interferometric synthetic apertur... 详细信息

现有开采损害鉴定的研究成果主要针对平原区域,缺少对高强度开采条件下山区地表建(构)筑物损坏的研究。以山西省冶头村建筑的异常损害为例,首先基于短基线集差分干涉测量技术(small baselines subset interferometric synthetic aperture radar,SBAS-InSAR),利用20景Sentinel-1A雷达影像,反演了目标区2016-11-14至2017-07-12期间地表形变的空间分布形态和时间演变过程。然后,结合现场调查的房屋损坏特征及地表裂缝数据,从开采沉陷理论和坡体稳定性分析两个角度进行开采损害鉴定的研究工作。研究表明:SBAS技术能够实现对采动地表异常形变的有效识别和提取,可为异常损害规律研究和原因揭示提供数据支撑;开采引起边坡稳定性降低,导致坡体蠕变滑移是地表建筑异常损害的原因。相关结论对于沉陷控制理论的发展完善,对开展山区井工开采房屋损害鉴定工作具有借鉴意义。

关键词：开采沉陷损害鉴定短基线集地表裂缝边坡滑移

Interruption Characteristics of High-speed Switches in 500 kV Fault Current Limiter with High Coupled Split Reactance

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CSEE Journal of Power and Energy Systems 2023年第4期9卷 1577-1584页

作者： Yanzhe Zhang Shixin xiu Qiang Tang Shenli Jia bo Chu Wenxiong Mo Yong Wang Haibo Su State Key Laboratory of Electrical Insulation and Power Equipment the School of Electrical EngineeringXi'an Jiaotong UniversityXi'an 710049China. Test and Research Institute of Guangzhou Power Supply Company Ltd. Guangzhou 510410China.

A 500 kV high-voltage AC fault current limiter(FCL)based on a high coupled split reactor(HCSR)is pro-posed by the National key R&D project team.Low impedance under normal conditions and high impedance under short-circuit conditions are accomplished by the cooperation of HCSR and high-speed switches.High-speed switches play an important role in current limiting processes,thus interruption characteristics of the high-speed switch in the 500 kV FCL are studied in this paper.The simulation model of the FCL and the external equivalent power grid are established.The short-circuit current and recovery voltage characteristics of the high-speed switch in FCL are simulated.The results show that maximum DC component of the short-circuit current of the high-speed switch reaches 91%,the maximum peak value is 118 kA,and the longest arcing time is 14.8 ms.There is a discontinuity in the curve of the short-circuit current peak and arcing time as a function of the short-circuit occurrence time;the peak recovery voltage of a single break of the high-speed switch has a maximum value of 87.5 kV under a three-phase ungrounded short-circuit condition,and the rate of rise of recovery voltage is o.22 kV/s.The recovery voltage peak shows a period change with the short-circuit occurrence time,and the period is 10 ms.The effects of the shunt capacitor value and short-circuit ground resistance on the recovery voltage of high-speed switching are also studied.The research can be used for reference by R&D personnel and testersof500kVFCLs.Index Terms-Fault current limiter(FCL),high coupled split reactor(HCSR),high-speed switch,interruption characteristics,short circuit current.

关键词： Fault current limiter(FCL) high coupled split reactor(HCSR) high-speed switch interruption characteristics short circuit current.

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先天性左心耳缺如临床及影像学分析

中国CT和MRI杂志 2024年第4期22卷 66-68页

作者：李天宇王秀平张波张继大连医科大学研究生院辽宁大连116044 泰州市人民医院影像科江苏泰州225300

目的探讨先天性左心耳缺如的临床及CT影像表现,以提高对先天性左心耳缺如的诊断认识水平。方法回顾性分析43405例心脏冠状动脉检查患者原始影像资料,通过横断面(CS)、多平面重建(MPR)、曲面重建(CPR)、最大密度投影(MIP)及容积再现(VR)... 详细信息

目的探讨先天性左心耳缺如的临床及CT影像表现,以提高对先天性左心耳缺如的诊断认识水平。方法回顾性分析43405例心脏冠状动脉检查患者原始影像资料,通过横断面(CS)、多平面重建(MPR)、曲面重建(CPR)、最大密度投影(MIP)及容积再现(VR)图像等后处理,最终发现11例先天性左心耳缺如患者。结果11例患者先天性左心耳缺如中男8例,女3例,其中7例近期内行心脏彩超检查,5例患者心脏射频消融术中造影。结论先天性左心耳缺如CT影像表现具有一定特征性。

关键词：左心耳解剖变异双源CT