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能源化学:英文版 2023年第8期83卷 32-42,I0003页

作者： Zichao Xi Jiaqian Wang baocang liu Xuan Xu Peng Jing Rui Gao Jun Zhang School of Chemistry and Chemical Engineering&Inner Mongolia Engineering and Technology Research Center for Catalytic Conversion and Utilization of Carbon Resource Molecules Inner Mongolia UniversityHohhot 010020InnerMongoliaChina Inner Mongolia Academy of Science and Technology Hohot 010010Inner MongoliaChina

The electrochemical reduction of nitrate to ammonia(NH3) can be used to recycle nitrogen and offers a decarbonized route for sustainable NH3production,but requires efficient electrocatalysts.Herein,we have rationally designed and fabricated a novel self-supported electrocatalyst comprised of Ni nanoparticles(NiNPs) embedded in Ni single atoms(NiSAs) anchored to nitrogen-doped carbon nanotubes grown on carbon cloth(NiNPs@NiSAs-NCNTs/CC) used for an efficient nitrate reduction reaction(NO3-RR) to produce NH_(3).The electrocatalyst can attain a maximum NH3yield rate of 27.67±1.16 mgNH3h^(-1)cm^(-2)at-1.4 V vs.reversible hydrogen electrode(RHE) and nearly 100% Faradic efficiency in the range of-1.2--1.4 V vs.RHE in a neutral medium,outperforming the previously reported Ni-based catalysts.Our experimental analysis and theoretical calculations have demonstrated that the moderate electrondeficient state of NiSAsregulated by NiNPsnot only facilitates the enrichment of NO_(3)^(-),but also benefits the formation of NO3*and decrease in the energy barrier of the rate-limiting step,thus resulting in the enhanced NO3-RR performance.

关键词： Nitratereductionreaction Moderateelectron-deficient state Self-supported electrocatalyst Enrichmentof NO_(3)^(-) Theoreticalcalculations

Ultrafine VN nanodots induced generation of abundant cobalt single-atom active sites on nitrogen-doped carbon nanotube for efficient hydrogen evolution

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Journal of Energy Chemistry 2022年第5期31卷 646-657页

作者： Yan Cheng Juhui Gong Bo Cao Xuan Xu Peng Jing Shien-Ping Feng Rui Cheng baocang liu Rui Gao Jun Zhang School of Chemistry and Chemical Engineering Inner Mongolia Engineering and Technology Research Center for Catalytic Conversion and Utilization of Carbon Resource Molecules&Inner Mongolia Key Lab of Nanoscience and NanotechnologyInner Mongolia UniversityHohhot 010020Inner MongoliaChina Department of Mechanical Engineering The University of Hong KongHong Kong 999077China

Development of highly active and stable non-noble electrocatalysts with well-defined nanostructures is crucial for efficient hydrogen evolution reaction(HER). Herein, a novel three-dimensional(3D) selfsupported electrode consists of vanadium nitride(VN) nanodots and Co nanoparticles co-embedded and highly active single Co atoms anchored in N-doped carbon nanotubes supported on carbon cloth(VN-Co@CoSAs-NCNTs/CC) is fabricated via a one-step in situ nanoconfined pyrolysis strategy, which shows remarkable enhanced HER electrocatalytic activity in acidic medium. During pyrolysis, the formed VN nanodots induce the generation of atomic Co Nxsites in NCNTs, contributing to superior electrocatalytic activity. Experimental and density functional theory(DFT) calculation results reveal that the electrode has multiple accessible active sites, fast reaction kinetics, low charge/mass transfer resistances,high conductivity, as well as downshifted d-band center with a thermodynamically favorable hydrogen adsorption free energy(△G_(H·)), all of which greatly boost the HER performance. As a result, the VNCo@CoSAs-NCNTs/CC electrode displays superb catalytic performance toward HER with a low overpotential of 29 mV at 10 mA cm^(-2) in acidic medium, which could maintain for at least 60 h of stable performance. This work opens a facile avenue to explore low-cost, high performance, but inexpensive metals/nitrogen-doped carbon composite electrocatalysts for HER.

关键词： Single cobalt atoms Nitrogen-doped carbon nanotubes Vanadium nitride nanodots Cobalt nanoparticles Hydrogen evolution reaction

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近红外光谱技术在反刍动物营养中的应用

草业科学 2024年第3期41卷 739-749页

作者：史艳丽郭涛代露茗王力李飞刘保仓草地农业生态系统国家重点实验室/兰州大学农业农村部草牧业创新重点实验室/兰州大学草地农业科技学院甘肃兰州730020 阿克苏泰昆饲料有限责任公司新疆阿克苏842008

近红外光谱技术以其快速、便捷、无损、绿色等优点,成为动物饲料营养价值评定研究中最具潜力的方法之一。本文简述了近红外光谱技术应用于饲料营养成分含量的测定、饲料的掺假鉴别及定量分析、饲料在瘤胃的降解情况、饲料在动物体内的... 详细信息

近红外光谱技术以其快速、便捷、无损、绿色等优点,成为动物饲料营养价值评定研究中最具潜力的方法之一。本文简述了近红外光谱技术应用于饲料营养成分含量的测定、饲料的掺假鉴别及定量分析、饲料在瘤胃的降解情况、饲料在动物体内的消化代谢情况和反刍动物采食量预测方面的有效性和准确性,并指出了后续应对已有模型进行不断优化。最终得出结论:目前近红外光谱技术结合化学计量学在饲料营养成分含量的测定、掺假鉴别和定量分析方面的准确性和稳定性较高,而对饲料在瘤胃的降解情况、动物体内消化率和采食量的预测方面,其准确性还有待进一步提高。

关键词：饲料营养成分饲料掺假鉴别养分消化率采食量定量分析预测模型模型优化

肝爽颗粒联合熊去氧胆酸治疗原发性胆汁性胆管炎疗效观察

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辽宁中医杂志 2024年第5期51卷 135-138页

作者：周保仓曹亚伟刘泉赵晓婷衡水市第三人民医院河北衡水053000

目的探讨肝爽颗粒治疗原发性胆汁性胆管炎(primary biliary cholangitis,PBC)的疗效及对患者肝功能及肝纤维化的影响。方法采用随机数字表法将于2019年12月—2022年3月在衡水市第三人民医院接受治疗的68例PBC患者分为A组和B组,各34例。... 详细信息

目的探讨肝爽颗粒治疗原发性胆汁性胆管炎(primary biliary cholangitis,PBC)的疗效及对患者肝功能及肝纤维化的影响。方法采用随机数字表法将于2019年12月—2022年3月在衡水市第三人民医院接受治疗的68例PBC患者分为A组和B组,各34例。A组给予熊去氧胆酸片,B组在A组基础上给予肝爽颗粒。两组均持续治疗3个月。比较两组治疗3个月后的疗效,治疗前、治疗3个月后的肝功能、肝纤维化指标、血清白细胞介素-6(interleukin-6,IL-6)、核因子相关因子2(Nrf2)、血红素加氧酶-1(hemoglobin oxygenase-1,HO-1),治疗期间的安全性。结果B组治疗3个月后的总有效率为97.06%(33/34),高于A组的76.47%(26/34)(P0.05]。结论肝爽颗粒可有效减轻PBC患者炎症反应及氧化应激反应,并抑制患者肝纤维化,进一步提高患者肝功能,具有较高临床疗效,且其安全性良好。

关键词：原发性胆汁性胆管炎熊去氧胆酸肝爽颗粒肝功能

WARX: efficient white-box block cipher based on ARX primitives and random MDS matrix

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Science China(Information Sciences) 2022年第3期65卷 196-210页

作者： Jun liu Vincent RIJMEN Yupu HU Jie CHEN baocang WANG State Key Laboratory of Integrated Service Networks Xidian University Interuniversity Microelectronics Centre & Computer Security and Industrial Cryptography Group Department of Informatics University of Bergen

White-box cryptography aims to provide secure cryptographic primitives and implementations for the white-box attack model, which assumes that an adversary has full access to the implementation of the cryptographic algorithms. Real-world applications require highly efficient and secure white-box schemes,whereas the existing proposals cannot meet this demand. In this paper, we design a new white-box block cipher based on addition/rotation/XOR(ARX) primitives and random maximal distance separable(MDS)matrix, white-box ARX(WARX), aiming for efficient implementations in both black-and white-box models.The implementation of WARX in the black-box model is nine times faster than SPNbox-16 from ASIACRYPT’16, and the implementation in the white-box model is more efficient than SPNbox-16 and WEM from CT-RSA’17. Moreover, the security of WARX in both black-and white-box models is analyzed, which ensures its practical applicability. The design of WARX shows that ARX primitives and random linear layer can improve the efficiency of a white-box block cipher. This article may inspire more provably secure and efficient white-box block ciphers and help to narrow the gap between provably secure white-box schemes from academia and highly applicable schemes in great demand from industry.

关键词： white-box cryptography block cipher design addition/rotation/XOR efficiency improvement

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镀锌光整机辊形优化及边浪板形缺陷控制

中国冶金 2024年第5期34卷 114-124页

作者：王春海刘学良苏宝沧王永强林海海文杰首钢集团有限公司技术研究院北京100043 绿色可循环钢铁流程北京市重点实验室北京100043 首钢京唐钢铁联合有限责任公司冷轧作业部河北唐山063210

为解决镀锌光整机对超高强钢边浪板形缺陷消除能力有限的问题,建立了光整轧制过程的有限元模型,对光整机生产超高强钢板形调控能力不足的原因进行了分析;在此基础上,对工作辊和支撑辊辊形进行了优化,并对不同辊形配置条件下光整机的板... 详细信息

为解决镀锌光整机对超高强钢边浪板形缺陷消除能力有限的问题,建立了光整轧制过程的有限元模型,对光整机生产超高强钢板形调控能力不足的原因进行了分析;在此基础上,对工作辊和支撑辊辊形进行了优化,并对不同辊形配置条件下光整机的板形调控特性进行了分析。研究表明,辊形优化后承载辊缝横向刚度提高了9%~20%,弯辊调控功效提高了17%,在保证出口板形良好的前提下,弯辊力降低约40%,辊间接触压力不均匀度最大降低31%,从而实现了超高强钢大轧制力光整的可能性。之后分析了工作辊辊径对板形调控特性的影响,发现通过减小工作辊辊径,可以有效降低光整所需轧制力,即采用小辊径工作辊可轧制强度更高、厚度更薄的超高强钢;同时发现工作辊辊径越小,弯辊调控功效和承载辊缝凸度调节域越大,但是承载辊缝横向刚度随之降低,辊间接触压力不均匀度随之增加。对上述研究结果进行了上机应用,证明了优化后的辊形能够有效控制超高强钢边浪板形缺陷,为超高强钢光整过程的板形控制提供了理论依据。

关键词：光整机辊形边浪有限元平直度

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New Weak Keys in RSA

Wuhan University Journal of Natural Sciences 2006年第6期11卷 1529-1532页

作者： WANG baocang liu Shuanggen HU Yupu Key Laboratory of Computer Network and Information Security Ministry of Edueation Xidian University Xi＇an 710071 Shaanxi China College of Computer Information Engineering Jiangxi Normal University Nanchang 330022 Jiangxi China

The security of the RSA system with the prime pairs of some special form is investigated. A new special-purpose algorithm for factoring RSA numbers is proposed. The basic idea of the method is to factor RSA numbers by factoring a well-chosen quadratic polynomial with integral coefficients. When viewed as a general-purpose algorithm, the new algorithm has a high computational complexity. It is shown thai the RSA number n = pq can be easily factored if p and q have the special form of p = as＋b, q=cs＋d, where a, b, c, d are relatively small numbers. Such prime pairs （p, q） are the weak keys of RSA, so when we generate RSA modulus, we should avoid using such prime pairs （p, q）.

关键词： integer factorization RSA number public key cryptosystem special-purpose algorithm

Functional Nanostructures for Catalytic Application

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Functional Nanostructures for Catalytic Application

Identity-Based Blind Signature from Lattices

第十四届全国青年催化学术会议

作者： Jun Zhang Qin Wang baocang liu Yang liu Wenting Hu Wenjing Jia Yongxin liu College of Chemistry and Chemical Engineering Inner Mongolia University

＜正＞Functional nanostructures with desired porous geometry and hierarchical architecture are of significant importance, as the creation of porous and hierarchical structures with macro-and meso-porosity, large surface areas, adjustable skeleton components, and variable supported noble metals, and good structural stability may be greatly beneficial to the improvement of their catalytic property. To this end, we create

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Wuhan University Journal of Natural Sciences 2017年第4期22卷 355-360页

作者： GAO Wen HU Yupu WANG baocang XIE Jia liu Momeng State Key Laboratory of Integrated Service Networks Xidian University Xi'an 710071 Shaanxi China

Blind signature allows a user to get a signature of a signer on an arbitrary message,and the verifier can convince that the signature is indeed signed by the signer without leaking any information about the message.This property is necessary when the user’s privacy needs protection,such as a bank bill,a trade secret,etc.As an alternative of public key infrastructure,the identity-based system can simplify the key management procedures in certificate-based public key systems.Inspired by the requirement of identity-based blind signature in the post quantum world,we research on identity-based blind signature based on hard lattice problems under the random Oracle model.We propose a construction built upon the blind signature by Rückert,and it is proved to be one-more unforgeable against selective identity and chosen message attacks（s ID-CMA）and unconditionally blind.The proposed scheme has 2 moves,and its security can be reduced to the small integer solution（SIS）problem.

关键词： lattice-based cryptography identity-based blind signature unforgeable

Verifiable Auditing Protocol with Proxy Re-Encryption for Outsourced Databases in Cloud

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Wuhan University Journal of Natural Sciences 2018年第2期23卷 120-128页

作者： GAO Ziyuan WANG baocang liu Hequn LU Ke ZHAN Yu State Key Laboratory of Integrated Service Networks Xidian University Xi'an 710071 Shaanxi China Key Laboratory of Cognitive Radio and InformationProcessing of Ministry of Education Guilin University ofElectronic Technology Guilin 541004 Guangxi China

As a new computing paradigm, outsourcing computing provides inexpensive, on-demand, convenient storage and computing services for cloud clients. For the security of outsourcing databases to the cloud, it is important to allow the user to verify the query results returned by the cloud server. So far, tremendous efforts have been carried out to study secure outsourcing computing. The existing scheme supports that the user can detect the correctness and completeness of the query results even if the cloud server returns an empty set. However, since the data owner performs the database encryption operations and uploads the encrypted database to the cloud server, they require the user to request the data owner to decrypt the query results. In this paper, we propose a new scheme, which can accurately verify the search results. Meanwhile, the users can decrypt the query results independently. Furthermore, the proposed scheme supports a large number of data owners to upload their encrypted database to the cloud server, and it can efficiently verify the query results. Besides, we can prove that our proposed solution can achieve the desired security properties.

关键词： outsourcing computing verifiable auditing proxyre-encryption bilinear aggregate signature