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Chinese Chemical Letters 2022年第3期33卷 1279-1282页

作者： Xin Xu ganggang li Fenglian Zhang Guoxia Jiang Zhengping Hao Research Center for Eco-Environmental Sciences Chinese Academy of SciencesBeijing 100085China National Engineering Laboratory for VOCs Pollution Control Material&Technology Research Center for Environmental Material and Pollution Control TechnologyUniversity of Chinese Academy of SciencesBeijing 101408China

H_(2)S selective catalytic oxidation technology is a prospective way for the treatment of low concentration acid gas with simple process operation and low investment. However, undesirable results such as large formation of SO_(2) and catalyst deactivation inevitably occur, due to the temperature rise of fixed reaction bed caused by the exothermic reaction. Catalyst with high activity in wide operating temperature window, especially in high temperature range, is urgently needed. In this paper, a series of copper-substituted hexaaluminate catalysts (LaCu_(x), x = 0, 0.5, 1, 1.5, 2, 2.5) were prepared and investigated for the H_(2)S selective oxidation reaction at high temperature conditions (300-550℃). The LaCu_(1) catalyst exhibited excellent catalytic performance and great stability, which was attributed to the best reductive properties and proper pore structure. Besides, two facile deep processing paths were proposed to eliminate the remaining H_(2)S and SO_(2) in the tail gas.

关键词： Low concentration acid gas H_(2)S selective oxidation High temperature Hexaaluminate catalyst

Promotional effect of Cu additive for the selective catalytic oxidation of n-butylamine over CeZrO_(x)catalyst

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Chinese Chemical Letters 2022年第6期33卷 3065-3072页

作者： Xin Xing Ting Zhao Jie Cheng Xiaoxiao Duan Wenpeng li ganggang li Zhongshen Zhang Zhengping Hao National Engineering Laboratory for VOCs Pollution Control Material&Technology Research Center for Environmental Material and Pollution Control TechnologyUniversity of Chinese Academy of SciencesBeijing 101408China College of Environmental Science and Engineering Taiyuan University of Science and TechnologyTaiyuan 030024China

The catalytic elimination of nitrogen-containing volatile organic compounds(NVOCs)still encounters bottlenecks in NO_(x)formation and low N_(2)selectivity.Here,a series of Cu-promoted Ce-Zr mixed oxide catalysts were synthesized using a simple precipitation approach,and n-butylamine was adopted as the probe pollutant to evaluate their catalytic performance.The Ce Cu_(10%)ZrO_(x)catalyst exhibited the best catalytic activity,with 100%n-butylamine conversion and 90%N_(2)selectivity at 250℃.Concurrently,this sample also displayed good water resistance.A detailed characterization of the catalyst was performed through a series of experimental studies and theoretical calculations.The addition of Cu increased the redox property and promoted the production of oxygen vacancies,all of which were favorable for the greatest nbutylamine selective catalytic oxidation performance.The changes of oxygen vacancies over Ce Cu_(10%)ZrO_(x)in reaction process were studied by in situ Raman spectra.Moreover,in situ diffuse reflectance infrared Fourier transform spectra(DRIFTs)and theoretical calculations were employed to explore the reaction mechanism of n-butylamine selective oxidation.The high activity and selectivity of this catalyst confirm the practical feasibility of the selective oxidation of n-butylamine to CO_(2)and N_(2),and the exploration of the reaction mechanism provides new insights into the further design of catalysts.

关键词： N-Butylamine CeCu_(a)ZrO_(x)mixed oxide Selective oxidation Oxygen vacancies Reaction mechanism

Study of PAPR mitigation in OFDM-VLC system by SCMA codebook design

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Optoelectronics Letters 2024年

作者： YANG Ting li ganggang liU Tao WANG Ping WANG Zhao Xidian University School of Telecommunications Engineering

Traditional orthogonal frequency division multiplexing (OFDM) based visible light communication (VLC) system is susceptible to high peak-to-average power ratio (PAPR)， thus leading to low power efficiency. To address this issue， a sparse code multiple access (SCMA) codebook design method has been proposed to lower the PAPR of the clipping based OFDM-VLC system. Then， the codebooks of the high-dimension mother constellation (MC) and low-dimension MC are optimized， respectively. Specifically， for high-dimension MCs like T16-QAM， the constellation points (CLPs) with higher transmit power are mapped to the CLPs with lower power. For low-dimension MCs like 4-PAM， a contracted mapping method is proposed to reduce the power of the CLPs located on the real axis of the MC. Simulations show that the proposed method could achieve better PAPR performance for any values of the clipping ratio with only a slight bit error rate (BER) performance loss compared to the original codebook design. Besides， the smaller clipping ratio would induce better PAPR performance but worse BER performance. Moreover， the increasing number of iterations in the logarithm domain message passing algorithm (log-MPA) could improve the BER performance. This work will benefit the research and development of SCMA-OFDM-VLC systems.

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Synergistic effect of oxygen vacancies and edging/corner-connected MnOs structural motifs in multi-dimensional manganese oxides to enhance OvOCs catalytic oxidation

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Chinese Chemical Letters 2023年第12期34卷 291-299页

作者： Yonggang Sun ganggang li Jie Cheng Na li Xin Xing Xin Zhang Zhongshen Zhang State Key Laboratory of High-eficiency Coal Utilization and Green Chemical Engineering School of Chemistry and Chemical EngineeringNingxia UniversityYinchuan 750021China National Engineering Laboratory for VOCs pollution Control Material&Technology Research Center for Environmental Material and Pollution Control TechnologyUniversity of Chinese Academy of SciencesBeijing 101408China College of Resources and Environment University of Chinese Academy of SciencesBejing 101408China

The structure-activity relationships for vinyl acetate catalytic oxidation are challenging to explore at the atomic scale due to the ambiguity of the structural defect types and sites of manganese oxides.Our work elaborates,at the atomic level,through in-situ experimental and theoretical methods,the synergistic effects of two types of structural defect sites of Vo-e(edge-sharing oxygen)and Vo-c(corner-sharing oxygen)and MnO6 structural motifs of manganese oxides.Multi-dimensional manganese oxides,namely those with corner-connected MnOs structural motifs and Vo-c structural oxygen defect sites,significantly improved the activation of vinyl acetate.Enhancement of enol structure formation,acetate and formate intermediate species,and tautomerism between enol structure and acetaldehyde were detected when oxygen vacancies of manganese oxides were present in combination with corner/edge-connected MnO6.Moreover,the activation of chemical bonds and deep catalytic oxidation of vinyl acetate depend on the presence of a redox couple,surface oxygen species,and weakened Mn-O bonds.It provides a valuable notion for investigating and designing catalytic systems and reaction processes for the purpose of emission reduction and the management of environmental contaminants.

关键词： Oxygen vacancies Synergistic effects MnO_(6)structural motifs In-situ technologies Catalytic oxidation

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猴痘合并艾滋病及梅毒一例

中国麻风皮肤病杂志 2024年第7期40卷 457-458页

作者：杨国祥张倩落李刚刚张媛罗培培邓涵西安市第八医院感染性疾病科陕西西安710000

既往报道猴痘病情严重的患者中82%为HIV感染者,亦有免疫功能低下的HIV感染者感染猴痘病毒后死亡的报道。本文报道一例猴痘合并艾滋病、梅毒及局部细菌感染患者。患者ART抗病毒治疗依从性差,HIV病毒载量高,免疫功能低下,在感染猴痘病毒... 详细信息

既往报道猴痘病情严重的患者中82%为HIV感染者,亦有免疫功能低下的HIV感染者感染猴痘病毒后死亡的报道。本文报道一例猴痘合并艾滋病、梅毒及局部细菌感染患者。患者ART抗病毒治疗依从性差,HIV病毒载量高,免疫功能低下,在感染猴痘病毒后出现了皮疹、发热、局部淋巴结肿大等典型特征,住院时间较本地区猴痘平均住院时间长,因此免疫功能低下的感染者病情较重,住院时间长,需引起足够重视。

关键词：猴痘梅毒艾滋病高HIV病载免疫功能低下

Target prediction and activity verification for the antidepressant action of Huangqin(Radix Scutellariae Baicalensis)

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Journal of Traditional Chinese Medicine 2021年第6期41卷 845-852页

作者： li ganggang LU Ye HE Pei ZHANG Shiyue CHENG Yating ZHANG Shaodan PEI lin School of Basic Medical Sciences Hebei University of Chinese MedicineShijiazhuang 050051China Hebei Key Laboratory of Turbidity Hebei Academy of Chinese Medicine SciencesShijiazhuang 050011China Department of pediatrics Second Hospital of Hebei Medical UniversityShijiazhuang 050073China Department of Traditional Chinese Medicine Anyang Vocational and Technical CollegeAnyang 455000China

OBJECTIVE:To decipher the antidepressant targets and mechanisms of Huangqin(Radix Scutellariae Baicalensis)(RSB)by a novel computational system based on prediction and experimental verification.METHODS:The putative targets of RSB against depression were identified from Traditional Chinese Medicine Systems Pharmacology(TCMSP)and Drug Bank.Next,protein-protein interaction network of the anti-depression targets of RSB were identified,and differentially expressed genes(DEGs)of depression were mined from the NCBI database.Then,Kyoto Encyclopedia of Genes and Genomes and Gene Ontology were used to analysis the common targets.Finally,the selected pathways and functions were verified by experimentation.RESULTS:Thirty active compounds in RSB were predicted with high confidence by TCMSP and DrugBank,and seventy-one DEGs were identified in the GEO database.Besides,eight core target proteins were screened out by descending order of degree value,including ACHE,IL6,SLC6A4,FOS,SLC6A3,MAOB,DPP4,and JUN.These target genes were further found to be associated with pathways involved in neuronal apoptosis,such as pathways in cancer,Toll-like receptor signaling pathway,and TNF signaling.The cell proliferation assay and wound-healing assay results showed that RSB does not affect PC12 cell proliferation and chemotaxis.Unexpectedly,RSB protected PC12 cells from oxidative stress induced by H2O2 via inhibiting autophagy and apoptosis.We revealed significant changes in mice treated with 400 mg/kg RSB compared with the lipopolysaccharide mice.The possible mechanism for the antidepressive action of RSB is by reducing the expression of LC3-B in CA1 neurons.CONCLUSIONS:Our research partially expounds the mechanism of the antidepressant effect of RSB by the combination of network pharmacology prediction and experimental verification.Furthermore,it is also conducive to the application of Traditional Chinese Medicine within modern medicine.

关键词： depression Huangqin(Radix Scutellariae Baicalensis) network pharmacology prediction and verification

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新媒体时代传统武术污名化的过程及消除策略

首都体育学院学报 2022年第5期34卷 531-537页

作者：李刚刚张长念首都体育学院北京100191

近年来,因为个别伪“大师”、假“掌门”进行商业炒作恶意捆绑传统武术,从而损害了传统武术的正面形象,使传统武术陷入污名化的非议之境。传统武术当前的传承与发展遭遇困境与此不无关系。运用文献研究法、逻辑分析法、网络调查法、访谈... 详细信息

近年来,因为个别伪“大师”、假“掌门”进行商业炒作恶意捆绑传统武术,从而损害了传统武术的正面形象,使传统武术陷入污名化的非议之境。传统武术当前的传承与发展遭遇困境与此不无关系。运用文献研究法、逻辑分析法、网络调查法、访谈法,以3个短视频发布平台为调查对象,在分析传统武术被污名化而产生的不良影响的基础上,梳理消极网络社会情绪致使传统武术污名化的过程。分析认为:消极网络社会情绪贯穿了传统武术污名化的全过程,是传统武术污名形成和扩散的重要原因。短视频发布平台评论区的易被消极情绪传染的受众形成了充满愤恨的社会情绪,成为传统武术被污名化的开端;对传统武术带有对立情绪的群体之间在短视频发布平台评论区的留言形成了传统武术的污名标签,体现了有些人对传统武术的刻板印象;而群体感染消极网络社会情绪又使传统武术陷入了污名化舆论的深渊。基于以上提出:中国武术协会对短视频发布平台的传统武术视频内容应加强监控;短视频发布平台应建立正确的新闻观和价值观,并要加强对视频内容的自治。

关键词：互联网新媒体消极网络社会情绪传统武术污名化消除策略

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酶水解法制备黄芪素及应用研究

日用化学工业（中英文） 2023年第5期53卷 544-550页

作者：亓国锋李刚刚安晏安阳职业技术学院河南安阳455000

探讨酶水解法制备黄芪素及其应用研究。以黄芪素的提取率为评价指标,采用酶水解法提取黄芪素,使用高效液相色谱仪(HPLC)进行测定。通过构建衰老模型小鼠,将酶水解法制备的黄芪素作用于衰老模型小鼠,观察衰老模型小鼠学习记忆能力及脑组... 详细信息

探讨酶水解法制备黄芪素及其应用研究。以黄芪素的提取率为评价指标,采用酶水解法提取黄芪素,使用高效液相色谱仪(HPLC)进行测定。通过构建衰老模型小鼠,将酶水解法制备的黄芪素作用于衰老模型小鼠,观察衰老模型小鼠学习记忆能力及脑组织氧化水平检测。结果显示,酶水解法正交试验较优条件为:当料液比1∶10,提取次数3次,提取温度80℃,提取时间1 min时,黄芪素提取率最高。与对照组相比,黄芪素作用衰老模型小鼠后,能够显著改善其学习记忆能力(P<0.05);经黄芪素处理后,衰老模型小鼠脑组织中超氧化物歧化酶(SOD)和过氧化氢酶(CAT)含量显著增加(P<0.05),而丙二醛(MDA)含量显著下降(P<0.05)。本研究中,通过优化黄芪素制备方法,并检测了黄芪素抗衰老能力,该研究为将来黄芪素的进一步开发和临床应用奠定了理论和实践基础。

关键词：酶水解法黄芪素衰老模型小鼠抗氧化应用研究

考虑APD的部分相干光OFDM-UWOC系统性能

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西安电子科技大学学报 2023年第1期50卷 58-65页

作者：宋亚童李爽李刚刚顾士忠王平郭立新西安电子科技大学综合业务网理论及关键技术国家重点实验室陕西西安710071 西安电子科技大学物理学院陕西西安710071

对于实际的水下无线光通信系统,系统误码性能主要受到海洋湍流和接收机噪声的制约。考虑散粒噪声和热噪声的影响,对弱海洋湍流环境下基于雪崩光电二极管的部分相干光辅助OFDM-UWOC系统的误码性能进行了分析。研究中利用波束扩展函数建... 详细信息

对于实际的水下无线光通信系统,系统误码性能主要受到海洋湍流和接收机噪声的制约。考虑散粒噪声和热噪声的影响,对弱海洋湍流环境下基于雪崩光电二极管的部分相干光辅助OFDM-UWOC系统的误码性能进行了分析。研究中利用波束扩展函数建立了吸收、散射、未对准和海洋湍流共同影响下的聚合信道衰落模型,进而分别导出不同噪声限制下的系统平均误码率理论表达式。受散粒噪声限制时,研究了接收机噪声温度、平均接收光强及雪崩光电二极管雪崩增益值的大小对系统可靠性的影响;受热噪声限制时,给出了部分相干光特征参数和海洋湍流特性参数对该系统可靠性的影响。结果表明,对于雪崩光电二极管而言,接收机温度和平均接收光强大小都会在一定程度上影响系统误码性能。因此,通过选择合适的雪崩光电二极管雪崩增益值,能够在一定程度上提升该OFDM-UWOC系统的误码性能。此外,部分相干光和海洋湍流的变化会对系统的误码性能产生影响。

关键词：水下无线光通信部分相干光雪崩光电二极管波束扩展函数

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论《唐人五言排律选》的学术价值与不足

内江师范学院学报 2023年第3期38卷 23-28页

作者：李刚刚上海师范大学人文学院上海200000

《唐人五言排律选》是元人李存编选的一部有关唐代五言排律的诗歌选本。该书凡十卷,取材全面、编选精审,共收录五言排律作品903首。作为第一部专选唐代五言排律的单一体裁选本,该书具有重要学术价值,在诗歌史构建、诗学批评、诗学文献... 详细信息

《唐人五言排律选》是元人李存编选的一部有关唐代五言排律的诗歌选本。该书凡十卷,取材全面、编选精审,共收录五言排律作品903首。作为第一部专选唐代五言排律的单一体裁选本,该书具有重要学术价值,在诗歌史构建、诗学批评、诗学文献等研究方面具有积极的推动作用。但因编选者的疏忽,该书存在一些不足,如目录中作者的重出、错乱及作品的错收、误收现象,这些问题应引起注意和警惕。

关键词：李存《唐人五言排律选》学术价值不足