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Research progress on preparation of cerium-based oxide catalysts with specific morphology and their application for purification of diesel engine exhaust

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Journal of Rare Earths 2024年第7期42卷 1187-1216,I0001页

作者： Chunlei zhang Siyu Gao Di Yu Shengran Zhou Lanyi Wang Xuehua Yu Zhen Zhao institute of Catalysis for Energy and Environment College of Chemistry and Chemical EngineeringShenyang Normal UniversityShenyang110034China State Key Laboratory of Heavy Oil Processing China University of PetroleumBejing102249China

The elimination of pollutants from diesel exhaust has received widespread research attention as they cause serious air pollution and pose a threat to human *** post-treatment technology is one of the most effective and universal technologies to treat diesel exhaust *** design and development of efficient and low-cost catalysts is the key factor to realize the wide application of catalytic post-treatment ***(Ce)-based oxides with specific morphologies are widely used to eliminate pollutants in diesel vehicle exhaust due to their unique physical and chemical properties,such as high catalytic activity,low cost and *** this review,the preparation methods of Cebased oxide materials with specific morphologies,such as nanoparticles,nanocubes,nanorods,nanofibers,and multi-stage pores,are introduced in detail,and the research progress on using these catalysts for the removal of carbon monoxide,hydrocarbons,soot particles,nitrogen oxides,and other pollutants from diesel exhaust is reviewed in ***,the unresolved issues associated with using Ce-based oxide catalysts with a specific morphology to catalytically remove pollutants from diesel exhaust are highlighted,and future application prospects and development directions are discussed.

关键词： Ce-based oxide catalysts Dies elexhaust pollutants Specific morphology Catalytic purification Rare earths

Application of fuzzy comprehensive evaluation method to assess effect of conformance control treatments on water-injection wells

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petroleum 2024年第1期10卷 165-174页

作者： Hu Jia Pengwu Li Wei Lv Jianke Ren Chen Cheng Rui zhang Zhengjun Zhou Yanbin Liang State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengduChina Oil and Gas Technology Research institute PetroChina Changqing Oilfield CompanyXi'anChina Oil Production Technology institute of Petrochina Dagang Oilfield Company TianjinChina

As an effective method to prolong the life of mature field,conformance control in water-injection well has been used ***,effect evaluation of conformance control has attracted great attention because it is an important guideline for the design of later enhanced oil recovery(EOR)***,production responses such as excessive water reduction and oil production increment are widely used as the ***,production responses may be unreliable due to the difficulty in determining an effective injection well which is caused by a large number of treated water-injection wells in a well ***,with the application of fuzzy comprehension evaluation(FCE),five evaluation indexes(injection pressure,injectivity index,slope of hall curve,variation coefficient and homogenization coefficient of injection profile)describe injection responses were selected to establish a new evaluation method in this *** on fuzzy mathematics,FCE reflects the difference of evaluation ***,weights of evaluation indexes were obtained by analytic hierarchy process(AHP),which made the results more *** Bai 239 oilfield as an example,the five injection responses indexes were used to assess treatment effect on five water-injection wells by single index evaluation and *** results showed that among the five evaluation indexes mentioned above,the slope of hall curve was the most important factor affected evaluation *** single index evaluation,opposite results may be produced easily on account of the one-sidedness of single index or human ***,we found that effective treatment was a relative concept *** result of FCE was consistent with single index evaluation but FCE was more *** study suggests that FCE could be applied to another field such as water flooding,acidizing and hydraulic fracturing.

关键词： Enhanced oil recovery Injection responses Fuzzy mathematics Analytic hierarchy process Effect evaluation

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绿色低碳工业变革性技术及策略

科学通报 2024年第8期69卷 1005-1011页

作者：石春艳张冰洁董坤张国帅李垚张香平中国科学院过程工程研究所离子液体清洁过程北京市重点实验室北京100190 中国石油大学(北京) 化学工程与环境学院北京102249

碳中和是国家重大战略,将推动能源及产业技术革命,重塑工业结构和人类生活方式.工业过程是我国能源消耗和二氧化碳排放的主要领域,工业过程的碳减排既是挑战也是机遇.我国是世界工业大国,工业体系门类齐全、规模宏大,其中钢铁、水泥(htt... 详细信息

碳中和是国家重大战略,将推动能源及产业技术革命,重塑工业结构和人类生活方式.工业过程是我国能源消耗和二氧化碳排放的主要领域,工业过程的碳减排既是挑战也是机遇.我国是世界工业大国,工业体系门类齐全、规模宏大,其中钢铁、水泥(https://***/dy/article/***)、电解铝(https://***/s?id=1772531617627423742&wfr=spider&for=pc)产量均占世界总产量的一半以上.

关键词：工业大国人类生活方式变革性国家重大战略二氧化碳排放能源消耗碳中和绿色低碳

Lztfl1/BBS17 controls energy homeostasis by regulating the leptin signaling in the hypothalamic neurons

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Journal of Molecular Cell Biology 2018年第5期10卷 402-410页

作者： Qun Wei Yi-Feng Gu Qing-Jun zhang Helena Yu Yan Peng Kevin W. Williams ruitao Wang Kajiang Yu Tiemin Liu Zhi-Ping Liu Department of Surgical Oncology and institute of Clinical Medicine Sir Run Run Shaw Hospital College of Medicine Zhejiang University Hangzhou 310016 China Department of Internal Medicine UT Southwestern Medical Center Dallas TX 75235 USA Department of Pathology UT Southwestern Medical Center Dallas TX 75235 USA Department of Intensive Care Unit The Third Affiliated Hospital Harbin Medical University Harbin 150081 China Sate Key Laboratory of Genetic Engineering School of Life Sciences Department of Endocrinology and Metabolism Zhongshan Hospital Collaborative Innovation Center for Genetics and Development Fudan University Shanghai 200438 China Department of Molecular Biology UT Southwestern Medical Center Dallas TX 75235 USA

Leptin receptor （LepRb） signaling pathway in the hypothalamus of the forebrain controls food intake and energy expenditure in response to an altered energy state. Defects in the LepRb signaling pathway can result in leptin-resistance and obesity. Leucine zipper transcription factor like 1 （Lztfl1）/BBS17 is a member of the Bardet-Biedl syndrome （BBS） gene family. human BBS patients have a wide range of pathologies including obesity. The cellular and molecular mechanisms underlying Lztfl1-regulated obesity are unknown. Here, we generated Lztfl1lf/f mouse model in which Lztfl1 can be deleted globally and in tissue-specific manner. Global Lztfl1 deficiency resulted in pleiotropic phenotypes including obesity. Lztfl1^-/- mice are hyperphagic and showed similar energy expenditure as WT littermates. The obese phenotype of Lztfl1-/- mice is caused by the loss of Lztfl1 in the brain but not in the ***1-/- mice are leptin-resistant. Inactivation of Lztfl1 abolished phosphorylation of Stat3 in the LepRb signaling pathway in the hypothalamus upon leptin stimulation. Deletion of Lztfl1 had no effect on LepRb membrane localization. Furthermore, we observed that Lztfl1-/- mouse embryonic fibroblasts （MEFs） have significantly longer cilia than WT MEFs. We identified several proteins that potentially interact with Lztfl1. As these proteins are known to be involved in regulation of actin/cytoskeleton dynamics, we suggest that Lztfl1 may regulate leptin signaling and ciliary structure via these proteins. Our study identified Lztfl1 as a novel player in the LepRb signaling pathway in the hypothalamus that controls energy homeostasis.

关键词： obesity BBS leptin-resistance cilia actin/cytoskeleton

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城市埋地燃气管网失效树的研究

天然气工业 2004年第11期24卷 124-126页

作者：孙永庆李又绿张峥钟群鹏北京航空航天大学材料科学与工程学院西南石油学院石油工程学院储运研究所

城市埋地燃气(主要包括天然气、煤气)管网在运行中会受到复杂环境因素和人为因素的影响,如果发生失效,就会直接威胁着管道沿线附近人员生命和国家财产的安全,因此有必要对燃气管道进行可靠性分析。失效树分析(Fault Tree Analysis)是一... 详细信息

城市埋地燃气(主要包括天然气、煤气)管网在运行中会受到复杂环境因素和人为因素的影响,如果发生失效,就会直接威胁着管道沿线附近人员生命和国家财产的安全,因此有必要对燃气管道进行可靠性分析。失效树分析(Fault Tree Analysis)是一种已被广泛应用的可靠性分析方法。文章选取失效树分析法对引起城市埋地燃气管网失效的各方面因素进行了全面地系统分析,建立了以燃气管网失效为顶事件,包含了116个基本事件的城市埋地燃气管网失效树。通过逻辑运算,得到了失效树的287个最小割集,并通过实例计算与分析对上述失效树进行了验证。通过对最小割集的分析,得到了影响城市埋地燃气管网可靠性的各影响因素的逻辑关系。结果表明,第三方破坏、腐蚀、制造缺陷等是影响城市埋地燃气管网可靠性最主要的因素,并提出了相应的措施以提高燃气管网的可靠性。

关键词：埋地燃气管网失效树城市燃气管道复杂环境破坏第三方人员国家财产

应用生成对抗网络的地震数据重建和去噪一体化方法

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石油地球物理勘探 2024年第4期59卷 714-723页

作者：张岩张一鸣董宏丽宋利伟东北石油大学计算机与信息技术学院黑龙江大庆163318 东北石油大学人工智能能源研究院黑龙江大庆163318 黑龙江省网络与智能控制重点实验室黑龙江大庆163318 东北石油大学物理与电子工程学院黑龙江大庆163318

在实际采集过程中,受地形条件和人为因素的影响,地震数据不仅在空间上会出现采样不足或不规则的情况,而且会混入噪声,不利于后续地震数据的处理和解释。通常将重建与去噪分为两个阶段处理,这样往往会引入额外的误差。为此,文中提出了一... 详细信息

在实际采集过程中,受地形条件和人为因素的影响,地震数据不仅在空间上会出现采样不足或不规则的情况,而且会混入噪声,不利于后续地震数据的处理和解释。通常将重建与去噪分为两个阶段处理,这样往往会引入额外的误差。为此,文中提出了一种基于条件韦氏生成对抗网络(cWGAN)的地震数据重建去噪一体化方法,该方法研究的重点是在缺失道和噪声的混合干扰下,准确提取地震数据的有效特征。首先,以U-Net模型为基本网络结构来构建生成器模型,分级提取地震数据同相轴特征;在判别器模型中引入条件约束,引导生成器优化梯度方向。其次,建立重建和去噪误差描述模型,该模型设计了一体化损失函数,可以兼顾重建与去噪两方面的处理任务。最后,经过合成数据和实际数据测试,证明文中所提的网络模型恢复的地震数据信噪比更高且具有较强鲁棒性。

关键词：地震数据处理重建与去噪一体化深度学习生成对抗网络一体化损失函数

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油气管道风险的模糊综合评价方法探讨

天然气工业 2003年第2期23卷 117-118页

作者：陈利琼张鹏马剑林王春兰西南石油学院廊坊管道局秦皇岛输油气公司

油气管道风险评价是一种以数据资料、运行经验、直观认识为基础的科学方法。通过风险的量化来进行分析比较 ,为管道风险管理的科学决策提供可靠的依据 ,以能够合理地运用有限的人力、物力和财力等资源条件 ,采取最为适当的措施 ,达到最... 详细信息

油气管道风险评价是一种以数据资料、运行经验、直观认识为基础的科学方法。通过风险的量化来进行分析比较 ,为管道风险管理的科学决策提供可靠的依据 ,以能够合理地运用有限的人力、物力和财力等资源条件 ,采取最为适当的措施 ,达到最为有效地减小损失、提高效益、保护环境等目的。文章在简要介绍油气管道风险评价技术现状的基础上 ,从评价中存在的客观困难和现行方法的局限性两方面阐述了进行油气管道风险的模糊综合评价的必要性 ,介绍了模糊综合评价的主要流程和主要方法 ,并指出油气管道风险评价技术的发展方向。

关键词：油气管道风险分析模糊综合评价方法发展方向

Extraction of Triterpenoids with Antioxidant and Anti-tumor Activity from Agrocybe aegerita Mycelium and Spent culture Medium

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食用菌学报 2007年第2期 44-47页

作者： YUAN Guangfeng1, XU Ruiya2, zhang Shubin1, WANG Li’an11Life Science College of Hebei Normal university, Shijiazhuang, Hebei 050016, china 2 Xuanhua Campus of zhangjiakou institute of Education, Xuangha, Hebei 075100, china

Different organic solvents (petroleum ether, ethyl acetate and ethanol) were used to extract A. aegerita mycelium and spent culture medium following growth of the fungus in submerged culture. All the extracts exhibite... 详细信息

关键词： Agrocybe aegerita Anti-oxidative activity Anti-tumor activity Triterpenoid human gastric cancer cell (BGC-823)

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整体观视角下探讨肿瘤的辨病与辨证论治

辽宁中医杂志 2024年第1期51卷 74-76页

作者：张曦石作荣山东中医药大学山东济南250355 山东石油化工学院山东东营257061

肿瘤是一种病程长、病情复杂的慢性疾病,其发病率逐年上升,威胁人类健康和生命。对于这类复杂性疾病,辨病论治可解决基本矛盾,辨证论治可解决主要矛盾,二者结合可发挥更好的治疗效果。中医治疗肿瘤历史渊源流长,积累了丰富的临证经验,... 详细信息

肿瘤是一种病程长、病情复杂的慢性疾病,其发病率逐年上升,威胁人类健康和生命。对于这类复杂性疾病,辨病论治可解决基本矛盾,辨证论治可解决主要矛盾,二者结合可发挥更好的治疗效果。中医治疗肿瘤历史渊源流长,积累了丰富的临证经验,肿瘤的辨病论治和辨证论治各有所长,辨病论治所揭示的基本病机可为肿瘤用药治疗提供线索和整体指导,辨证论治从定位、定性、必先五胜、治病求本和治未病等五方面出发则可更好动态调整疾病之变。从中医学整体观视角出发,进行整体辨治,强调辨病论治与辨证论治相结合,重视辨症论治和辨因论治,融入辨体论治,发展辨靶论治,加强医患合作,可在肿瘤诊治中更好地发挥中医药优势。随着中西医结合研究不断发展,病证结合模式在治疗肿瘤方面应用渐广,基于中医整体观将辨病与辨证论治更好统一,值得不断探索,推动肿瘤治疗发展。

关键词：肿瘤整体观辨病论治辨证论治

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