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Implementation of the Incremental Analysis Update Initialization Scheme in the Tropical Regional Atmospheric Modeling System under the Replay Configuration

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Journal of Meteorological Research 2021年第1期35卷 198-208页

作者： Haorui li daosheng XU Banglin ZHANG Guangzhou Institute of Tropical and Marine Meteorology Guangdong Provincial Key Laboratory of Regional Numerical Weather PredictionChina Meteorological AdministrationGuangzhou 510640

In traditional simulations of heavy rainfall events, the regional model is often initialized by using a global reanalysis dataset and a cold start method. An alternative to using global analysis data is to gradually introduce the analysis field via an incremental analysis update(IAU) method under the replay configuration. We found substantial differences in the forecast of a heavy rainfall event in southern China between a precipitation forecast using the traditional method and a forecast using the IAU method in the Tropical Regional Atmospheric Modeling System(TRAMS),based on the ECMWF global analysis. The IAU method is efficient in removing spurious high-frequency gravity wave noise, especially when the relaxation time is more than 90 min. The regional model needs to be pre-integrated for about 12 h to warm up the convective system in the background field. The improvement by the IAU method is supported by verification of simulations over 1 month(1–30 April 2019). In general, the IAU technique improves the initialization and spin-up process in the simulation of the heavy rainfall event.

关键词： incremental analysis update initialization replay

Dry-type AMDT Fault Detection Based on Vibration Signal Analysis by Wavelet Packet

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CES Transactions on Electrical Machines and Systems 2023年第3期7卷 341-349页

作者： daosheng liu Peng li Yijie Chen IEEE Jiangxi University of Science and Technology GanzhouChina341000 School of Electrical Engineering and Automation Jiangxi University of Science and Technology

Amorphous metal distribution transformers(AMDT)are widely used in power grids due to their low no-load *** scholars have carried out research on the fault detection of transformer windings,tap changers and the other ***,due to the high magnetostriction of the amorphous alloy,the vibration generated by AMDT during operation will cause various mechanical *** paper studies the vibration characteristics of SCBH 15-200/100 AMDT through no-load tests to find some mechanical failures of *** installation position of the vibration sensor in AMDT are determined according to finite element analysis(FEA)of the magnetic flux density distribution and modal analysis,and the vibration analyses are performed under different operating conditions of *** wavelet packet transform(WPT)is used to perform detailed analysis of the vibration signal in the time domain and frequency domain to obtain the energy characteristic value of each frequency band,and it includes the frequency spectrum and waveform data under normal and fault *** obtaining the energy characteristic thresholds of different frequency bands under different conditions,the operating status can be detected by comparing test data with the *** operation condition including mechanical failures induced by magnetostrictive actions can be accurately determined by the energy characteristic value,such as loose nuts and stress,etc.

关键词： AMDT FEA WPT Energy eigenvalue Mechanical failures

低温条件下不同曝气方式对硫自养湿地脱氮效能的影响

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环境工程学报 2019年第11期13卷 2619-2628页

作者：黄雪玲刘慧敏何启帆熊瑞涵蔡婷婷任拥政康建雄李道圣刘冬啟华中科技大学环境科学与工程学院武汉430074 中国五环工程有限公司武汉430074

为提高人工湿地的脱氮效率,将硫磺与石灰石按体积1∶1的比例填充于波形潜流湿地内,辅助间歇人工曝气,探讨了在冬季低温条件下,间歇曝气时间对波形潜流人工湿地脱氮效率和反硝化作用的影响,并分析了硫自养湿地的作用机理和节能减排特性... 详细信息

为提高人工湿地的脱氮效率,将硫磺与石灰石按体积1∶1的比例填充于波形潜流湿地内,辅助间歇人工曝气,探讨了在冬季低温条件下,间歇曝气时间对波形潜流人工湿地脱氮效率和反硝化作用的影响,并分析了硫自养湿地的作用机理和节能减排特性。结果表明,间歇曝气运行方式有效提高了湿地内部溶解氧水平,在湿地内部营造了一种交替的好氧和缺氧环境,可以促进硝化和反硝化作用,有效地解决了人工湿地在冬季(10℃以下)脱氮效率低的问题。湿地冬季运行时,曝气间歇时间为4 h的条件下,TN去除率高达59.4%,相比连续曝气方式提高20%~30%。与传统处理工艺相比,硫自养湿地的能耗节省率达到50%以上,且在一定程度上减少了CO^2的排放,实现了高效脱氮和节能环保。

关键词：脱氮低温硫自养潜流人工湿地节能减排

复方斑蝥胶囊改善晚期结直肠癌化疗后疲乏临床价值

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中医药临床杂志 2021年第11期33卷 2235-2237页

作者：李道生曾祥胜王逸飞陈敏杰江西省九江市第一人民医院江西九江332000

目的:观察复方斑蝥胶囊对晚期结直肠癌化疗后疲乏的改善作用。方法:116例直肠癌化疗后患者随机分为治疗组与对照组各58例。对照组标准化疗±靶向治疗,同时给予护肝、护胃、止吐、补液等治疗;治疗组在对照组的基础上加用复方斑蝥胶囊。以... 详细信息

目的:观察复方斑蝥胶囊对晚期结直肠癌化疗后疲乏的改善作用。方法:116例直肠癌化疗后患者随机分为治疗组与对照组各58例。对照组标准化疗±靶向治疗,同时给予护肝、护胃、止吐、补液等治疗;治疗组在对照组的基础上加用复方斑蝥胶囊。以 Piper 疲乏量表进行问卷调查,统计2组患者干预前后疲乏评分;观察2组患者中医症状疗效。结果:治疗后治疗组疲乏评分(68.5±22.6)明显低于对照组(121.2±14.2),P<0.01,差异有统计学意义;中医症状疗效治疗组亦明显优于对照组,P<0.05,差异有统计学意义。结论:应用复方斑蝥胶囊对后晚期结直肠癌化疗后疲乏有显著效果,有一定临床推广价值。

关键词：晚期结直肠癌化疗后疲乏复方斑蝥胶囊益气养血标准化疗靶向治疗

An Initialization Scheme for Weak Tropical Cyclones in the South China Sea

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Journal of Meteorological Research 2021年第2期35卷 358-370页

作者： Jihang li Qilin WAN daosheng XU Yanyan HUANG Xubin ZHANG Guangzhou Institute of Tropical and Marine Meteorology China Meteorological AdministrationGuangzhou 510640

Variations in the initial structure of tropical cyclones(TCs) inevitably affect prediction results;however, the bogus model cannot accurately describe the structure of a weak tropical cyclone with increased initial field resolution. This study aims to construct a model to improve the prediction of weak TC in southern China. Based on the ECMWF 0.1° analysis data, several vortices were filtered out from tropical depressions and tropical storms in 2018 and 2019 to represent a weak TC reservoir in the South China Sea. For different simulation objects, filtered vortices were combined with the TC environmental field to form ensemble members. The observed TC information was assimilated for simulating TCs Bebinca, Mun, and Ewiniar to verify the feasibility of the proposed model, based on the Global/Regional Assimilation and Prediction Enhanced System(GRAPES) 9-km model developed by the Guangzhou Institute of Tropical and Marine Meteorology. The results show that the initialization scheme of the weak tropical cyclone model improved the intensity prediction of the TC by 26.81%(Bebinca), 18.65%(Mun), and 47.00%(Ewiniar), compared with the control experiment. Because typhoon intensity forecasting has not notably improved for many years, this scheme has certain scientific and operational significance.

关键词： tropical cyclones(TCs) intensity forecast initialization scheme for weak TC

Fault rupture propagation in soil with intercalation using nonlocal model and softening modulus modification

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第11期15卷 2973-2993页

作者： Jisen Shi li Guan Duanyang Zhuang Xiang Chen daosheng ling Center for Hypergravity Experiment and Interdisciplinary Research Zhejiang UniversityHangzhou310058China Department of Civil Engineering Jiaxing UniversityJiaxing314000China MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering Zhejiang UniversityHangzhou310058China

Fault rupture propagation is more complex in the overlying soil with intercalation than in homogeneous soil,and it is challenging to simulate this phenomenon accurately using the finite element *** address this issue,an improved nonlocal model that incorporates softening modulus modification is *** methodology has the advantage that the solutions are independent of both mesh sizes and characteristic lengths,while maintaining objective softening rates of *** the proposed methodology,a series of numerical simulations are conducted to investigate the effects of different mechanical parameters,such as elastic modulus,friction angle and dilation angle of the soil within the intercalation,as well as the impact of geometries,such as the depth and thickness of the intercalation,on the fault rupture *** study not only provides significant insights into the mechanisms of fault rupture propagation,specifically in relation to intercalations,but also shows a great value in promoting the current research on fault rupture.

关键词： Fault rupture Nonlocal model Mesh dependence Intercalation Numerical simulation

共存钙离子对镧铝改性稻壳生物炭除磷性能的影响

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环境化学 2020年第5期39卷 1279-1289页

作者：阮华珍高章龙陈玉婷魏小婷熊瑞涵石稳民刘冬啟康建雄李道圣任拥政华中科技大学环境科学与工程学院武汉430074 中国城市建设研究院有限公司北京100120 中国市政工程中南设计研究总院有限公司武汉430000 中建三局绿色产业投资有限公司武汉430056

本研究利用稻壳制备高介孔率生物炭,然后用共沉淀法负载金属La、Al,制得镧铝改性稻壳基生物炭吸附剂.通过控制反应时间、磷浓度、共存阴离子、初始pH等条件,研究共存钙离子时对吸附剂除磷性能的影响.结果表明,La、Al在稻壳基生物炭上负... 详细信息

本研究利用稻壳制备高介孔率生物炭,然后用共沉淀法负载金属La、Al,制得镧铝改性稻壳基生物炭吸附剂.通过控制反应时间、磷浓度、共存阴离子、初始pH等条件,研究共存钙离子时对吸附剂除磷性能的影响.结果表明,La、Al在稻壳基生物炭上负载后呈无定型态;吸附剂的除磷过程符合伪二阶动力学模型和Langmuir模型,且Ca2+的加入有利于提高磷的去除率,含Ca2+体系的最终除磷效果是无Ca2+时的2.6倍;含竞争阴离子时,Ca2+的加入会使F-对磷吸附的抑制作用减弱,使HCO3-对磷吸附的抑制作用略微增强;在pH值为2.0—8.0时,Ca2+能提高改性生物炭的吸附容量,而pH>8.0时主要是钙离子与磷酸盐的沉淀作用使体系中磷大量被去除.

关键词：稻壳基生物炭改性共存钙离子除磷

基于精准医学与MDT模式在进展期或复发结直肠癌中的临床应用价值

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实用癌症杂志 2021年第5期36卷 844-846页

作者：段训凰李道生曾祥胜石春燕邓建华江西省九江市第一人民医院 332000

目的探讨基于精准医学与MDT模式在进展期或复发结直肠癌的临床治疗中的应用价值。方法收集进展期或复发的结直肠癌患者40例,采用免疫组化技术检测MLH1、MSH2表达水平,同时行RAS基因状态、BRAF基因状态检测,通过专科评估和多学科MDT模式... 详细信息

目的探讨基于精准医学与MDT模式在进展期或复发结直肠癌的临床治疗中的应用价值。方法收集进展期或复发的结直肠癌患者40例,采用免疫组化技术检测MLH1、MSH2表达水平,同时行RAS基因状态、BRAF基因状态检测,通过专科评估和多学科MDT模式并制定治疗治疗方案。结果40例患者中,MLH1、MSH2表达阳性者39例,MLH1、MSH2阴性者1例;MLH1、MSH2表达阳性两者之间具有较好的一致性,表达阳性率较高,占97.5%。在治疗上给予化疗联合靶向治疗,靶向治疗药物选择西妥昔抗或贝伐珠单抗;MSH1、MSH2表达缺失者联合免疫治疗和化疗。RAS基因野生型占29例,基因突变者11例;BRAF突变者3例,野生型占37例,RAS基因与BRAF基因状态不具有同步突变的概率。针对伴有基因突变的患者选择化疗联合贝伐珠单抗。针对精准医学检测及MDT会诊的结果,更改治疗方案有5例,占比12.5%;肿瘤的TNM分期及治疗策略均有所调整,但差异均无统计学意义(P>0.05)。结论进展期或复发结直肠癌进行精准医学检测和MDT协作,可提高肿瘤TNM分期的准确性及治疗方案的精准实施,应作为临床诊疗的参考要素。

关键词：精准医学 MDT 结直肠癌

Coke behavior with H_(2)O in a hydrogen-enriched blast furnace:A review

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International Journal of Minerals,Metallurgy and Materials 2024年第5期31卷 959-976页

作者： Feng Zhou daosheng Peng Kejiang li Alberto N.Conejo Haotian liao Zixin Xiong Dongtao li Jianliang Zhang School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China School of Chemical Engineering The University of QueenslandSt LuciaQLD 4072Australia Baosteel Central Research Institute(R&D Center of Wuhan Iron&Steel Co. Ltd.)Wuhan 430080China Shougang Research Institute of Technology Shougang Group Corporation Ltd.Beijing 100043China Beijing Key Laboratory of Green Recyclable Process for Iron and Steel Production Technology Beijing 100043China

Hydrogen-enriched blast furnace ironmaking has become an essential route to reduce CO_(2)emissions in the ironmaking ***,hydrogen-enriched reduction produces large amounts of H_(2)O,which places new demands on coke quality in a blast *** a hydrogen-rich blast furnace,the presence of H_(2)O promotes the solution loss *** result improves the reactivity of coke,which is 20%-30%higher in a pure H_(2)O atmosphere than in a pure CO_(2)*** activation energy range is 110-300 kJ/mol between coke and CO_(2)and 80-170 kJ/mol between coke and H_(2)***_(2)and H_(2)O are shown to have different effects on coke degradation *** review provides a comprehensive overview of the effect of H_(2)O on the structure and properties of *** exploring the interactions between H_(2)O and coke,several unresolved issues in the field requiring further research were *** review aims to provide valuable insights into coke behavior in hydrogen-rich environments and promote the further development of hydrogen-rich blast furnace ironmaking processes.

关键词： hydrogen ironmaking coke behavior blast furnace gasification microstructure kinetics