检索结果-南通市图书馆

Journal of Pharmaceutical Analysis 2020年第4期10卷 356-364页

作者： Luming Qi Furong Zhong Yang Chen Shengnan Mao Zhuyun Yan Yuntong Ma State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China Chengdu University of Traditional Chinese MedicineChengdu611137China School of Pharmacy Chengdu University of Traditional Chinese MedicineChengdu611137China

Emblic medicine is a popular natural source in the world due to its outstanding healthcare and therapeutic functions.Our preliminary results indicated that the quality of emblic medicines might have an apparent regional variation.A rapid and effective geographical traceability system has not been designed yet.To trace the geographical origins so that their quality can be controlled,an integrated spectroscopic strategy including spectral pretreatment,outlier diagnosis,feature selection,data fusion,and machine learning algorithm was proposed.A featured data matrix(245220)was successfully generated,and a carefully adjusted RF machine learning algorithm was utilized to develop the geographical traceability model.The results demonstrate that the proposed strategy is effective and can be generalized.Sensitivity(SEN),specificity(SPE)and accuracy(ACC)of 97.65%,99.85%and 97.63%for the calibrated set,as well as 100.00%predictive efficiency,were obtained using this spectroscopic analysis strategy.Our study has created an integrated analysis process for multiple spectral data,which can achieve a rapid,nondestructive and green quality detection for emblic medicines originating from seventeen geographical origins.

关键词： Emblic medicine Quality assessment Geographical traceability Spectroscopic analysis process

Synergistic effects of Nb and Mo on hydrogen-induced cracking of pipeline steels:A combined experimental and numerical study

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Journal of Materials Science & Technology 2023年第27期158卷 156-170页

作者： Shiqi Zhang Luming Qi Shilong Liu Zhixian Peng Y.Frank Cheng Feng Huang Jing Liu The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan 430081China Institute of Advanced Steels and Materials School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China Department of Mechanical Engineering University of CalgaryCalgaryAB T2N 1N4Canada Hubei Engineering Technology Research Centre of Marine Materials and Service Safety Wuhan University of Science and TechnologyWuhan 430081China

The synergistic effects of Nb and Mo on hydrogen-induced cracking(HIC)of pipeline steels were studied experimentally and numerically.The results showed that Mo was primarily segregated at grain-boundaries(GBs)or solid-dissolved in the matrix,while most Nb and a small amount of Mo formed dis-persed(Nb,Mo)C nano-precipitates and refined the microstructure.Compared with Nb alloying,the multi-ple additions of Nb-Mo played dual roles in affecting H diffusion:primarily,the H-traps densities such as GBs,precipitates,and solute Mo atoms increased,providing an advantage;however,Mo slightly reduced the H-trapping capacity of precipitates,playing an adverse role.Nonetheless,the beneficial effects far outweighed the adverse effects,thereby reducing H diffusivity and inhibiting crack initiation.Addition-ally,Nb and Mo hindered crack propagation synergistically as follows:(i)Mo enhanced GB cohesion by repelling H,impeding intergranular cracking and hydrogen-enhanced decohesion(HEDE);(ii)Nb reduced the proportion of3/high-angle grain boundaries,increasing cracking resistance;(iii)(Nb,Mo)C precip-itates impeded H-dislocation interactions,reducing the hydrogen-enhanced localized plasticity(HELP).

关键词： Hydrogen-induced cracking Nb-Mo microalloying Hydrogen permeation Precipitate Pipeline steel

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推动建设现代流通体系的政策建议

全球化 2022年第6期 85-92,134页

作者：綦鲁明中国国际经济交流中心科研信息部

改革开放特别是党的十八大以来,我国流通体系在国民经济中的基础性、先导性、战略性作用日益明显,对共同富裕形成重要助力。但从总体看,我国流通体系与我国社会主义现代化建设和建设物流强国的目标要求还不适应,仍面临商品要素市场化改... 详细信息

改革开放特别是党的十八大以来,我国流通体系在国民经济中的基础性、先导性、战略性作用日益明显,对共同富裕形成重要助力。但从总体看,我国流通体系与我国社会主义现代化建设和建设物流强国的目标要求还不适应,仍面临商品要素市场化改革尚未到位,基础设施发展不均衡、不充分,科技赋能水平不高,流通业立法不足,流通服务支撑体系建设严重滞后,以及体制机制改革、市场监管、规划引导、政策支持水平亟需提升等突出问题。建设中国特色现代流通体系服务新发展格局,需要充分发挥政府在建设现代流通体系中的关键性引导作用。政府应坚持问题导向,运用产业链供应链“链式”思维,统筹运用政府与市场两方面力量,重点推进建设现代市场体系,构建现代物流体系和实施科技赋能,着力完善现代流通治理体系,提升治理能力,加大改革和监管力度,综合施策,有效推动现代流通体系高质量发展,为构建以国内大循环为主体、国内国际双循环相互促进的新发展格局提供坚实有力支撑。

关键词：现代流通体系科技赋能新发展格局

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推进我国初级产品供需平衡

宏观经济管理 2023年第9期 11-18,37页

作者：綦鲁明张永军中国国际经济交流中心科研信息部中国国际经济交流中心

推进初级产品供需平衡对我国应对外部冲击、落实扩大内需战略、提高国家发展规划科学性具有重要意义。我国初级产品供需平衡取得诸多有益经验,也面临着一些突出问题。应坚持总量平衡、结构平衡、价值量平衡、供应与能力条件平衡的基本原... 详细信息

推进初级产品供需平衡对我国应对外部冲击、落实扩大内需战略、提高国家发展规划科学性具有重要意义。我国初级产品供需平衡取得诸多有益经验,也面临着一些突出问题。应坚持总量平衡、结构平衡、价值量平衡、供应与能力条件平衡的基本原则,通过提高自给率,强化生产消费节约,统筹国内国际两种资源保供,维护国际供应链安全稳定,推动形成我国公平竞争市场秩序,提升现代物流保障能力,提高初级产品供需平衡的创新性、协调性和安全性,将经济发展的主动权始终牢牢掌握在自己手中。

关键词：初级产品供需平衡新发展格局

数字新闻可视化生产的权力特质、效果偏倚与共治路径

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传媒观察 2022年第7期463卷 5-12页

作者：申琦赵鹿鸣南京大学新闻传播学院江苏南京210023 北京大学汇丰商学院广东深圳518055

数字新闻创新的重要趋势之一在于使用新颖的技术及视觉效果驱动新闻故事,以应对日益多元和复杂的新闻生态系统。本文系统梳理了新闻编辑室采纳可视化的权力因素与衍生出的偏倚问题。区分行动者与生产流程,从数据源、视觉生产、受众解读... 详细信息

数字新闻创新的重要趋势之一在于使用新颖的技术及视觉效果驱动新闻故事,以应对日益多元和复杂的新闻生态系统。本文系统梳理了新闻编辑室采纳可视化的权力因素与衍生出的偏倚问题。区分行动者与生产流程,从数据源、视觉生产、受众解读三个阶段,提供了新闻可视化生产问题的核查框架。研究认为,以可视化为代表的数字技术既为新闻编辑室赋权也带来了权力隐患。本文提出双向素养、数据行动与可视化基准三个维度,形成回应新闻可视化生产问题的共同治理模式,尝试构建新闻可视化在数字时代的意义网络。

关键词：新闻可视化数字新闻数据可视化可视化产制新闻编辑室

Carbothermic reduction of vanadium titanomagnetite with the assistance of sodium carbonate

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International Journal of Minerals,Metallurgy and Materials 2022年第2期29卷 239-247页

作者： luming Chen Yulan Zhen Guohua Zhang Desheng Chen Lina Wang Hongxin Zhao Fancheng Meng Tao qi National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology Institute of Process EngineeringBeijing 100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing 100190China State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

The carbothermic reduction of vanadium titanomagnetite concentrate(VTC)with the assistance of Na_(2)CO_(3)was conducted in an argon atmosphere between 1073 and 1473 K.X-ray diffraction and scanning electron microscopy were used to investigate the phase transformations during the reaction.By investigating the reaction between VTC and Na_(2)CO_(3),it was concluded that molten Na_(2)CO_(3)broke the structure of titanomagnetite by combining with the acidic oxides(Fe_(2)O_(3),TiO_(2),Al_(2)O_(3),and SiO_(2))to form a Na-rich melt and release FeO and MgO.Therefore,Na_(2)CO_(3)accelerated the reduction rate.In addition,adding Na_(2)CO_(3)also benefited the agglomeration of iron particles and the slag–metal separation by decreasing the viscosity of the slag.Thus,Na_(2)CO_(3)assisted carbothermic reduction is a promising method for treating VTC at low temperatures.

关键词： vanadium titanomagnetite sodium carbonate phase transformation carbothermic reduction slag–metal separation

管窥百年普利策:基于普利策新闻奖嘉奖辞的词频分析(1917-2016)

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国际新闻界 2017年第12期39卷 88-105页

作者：申琦赵鹿鸣华东师范大学传播学院

本研究通过词频分析法,考察1917年至2016年美国普利策新闻奖获作品的嘉奖辞。研究发现,作为普利策评审委员会对获奖作品的专业评述,一百年来嘉奖词中的词频呈现一定的稳定性和持续性;同时,在不同总统和不同政党的执政期内,嘉奖词中的词... 详细信息

本研究通过词频分析法,考察1917年至2016年美国普利策新闻奖获作品的嘉奖辞。研究发现,作为普利策评审委员会对获奖作品的专业评述,一百年来嘉奖词中的词频呈现一定的稳定性和持续性;同时,在不同总统和不同政党的执政期内,嘉奖词中的词频又显现出差异性。这在某种程度上表明,百年来普利策新闻奖评审遵循并适当调整着自己的专业标准,由此影响普利策新闻奖这一美国新闻业最高荣誉体系的构建。

关键词：普利策新闻奖嘉奖辞词频分析法

智能技术与网络内容治理:关系辨析与多方共治

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社会治理 2022年第7期 78-84页

作者：申琦赵鹿鸣南京大学新闻传播学院复旦大学新闻学院

智能技术激发了网络内容的创作繁荣,也对内容生态的治理构成了新的挑战。本文阐述了网络内容治理工作重点的演变,从“智能内容治理”与“内容智能治理”两个角度辨析智能技术与网络内容治理的竞合关系,进一步探讨了融合正式监管与非正... 详细信息

智能技术激发了网络内容的创作繁荣,也对内容生态的治理构成了新的挑战。本文阐述了网络内容治理工作重点的演变,从“智能内容治理”与“内容智能治理”两个角度辨析智能技术与网络内容治理的竞合关系,进一步探讨了融合正式监管与非正式监管,阐释政府(监管方)、平台方、内容生产方、用户与社会组织形成的内容治理协作权利义务,提出“内容治理五角形”,以生成网络内容共治的政策指导模型,为网络治理工作提供理论与实务借鉴。

关键词：内容治理数字平台网络内容智能技术

A Summary of Chinese Expert Consensus on Fetal Growth Restriction (An Update on the 2019 Version)

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Maternal-Fetal Medicine 2022年第3期4卷 162-168页

作者： Fetal Medicine Subgroup,Chinese Society of Perinatal Medicine,Chinese Medical Association Maternal-Fetal Medicine Committee,Chinese Society of Obstetrics and Gynecology,Chinese Medical Association luming Sun Yali Hu Hongbo qi 不详 Shanghai Key Laboratory of Maternal Fetal Medicine Department of Fetal Medicine&Prenatal Diagnosis CenterShanghai First Maternity and Infant HospitalSchool of MedicineTongji UniversityShanghai 201204China Department of Obstetrics and Gynecology Nanjing Drum Tower HospitalThe Affiliated Hospital of Nanjing University Medical SchoolNanjing 210008China Department of Obstetrics Women and Children’s Hospital of Chongqing Medical UniversityChongqing 400021China

Fetal growth restriction(FGR)is a common complication of pregnancy associated with higher rates of perinatal mortality and morbidity,as well as a variety of long-term adverse outcomes.To standardize the clinical practice for the management of FGR in China,Fetal Medicine Subgroup,Chinese Society of Perinatal Medicine,Chinese Medical Association and Maternal-Fetal Medicine Committee,Chinese Society of Obstetrics and Gynecology,Chinese Medical Association organized an expert committee to provide official consensus-based recommendations on FGR.We evaluated the evidence provided by relevant high-quality literature,performed a three-round Delphi study and organized face-to-face meetings with experts from multidisciplinary backgrounds.The consensus includes the definition,prenatal screening,prevention,diagnosis,monitoring and management of FGR.

关键词： Delphi technique Fetal growth restriction Practice guideline

3D-printed MoS_(2)/Ni electrodes with excellent electro-catalytic performance and long-term stability for dechlorination of florfenicol

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Journal of Environmental Sciences 2024年第3期137卷 420-431页

作者： Jianhui Xu Pengxu Wang Shenggui Chen Lei Li Dan Li Yunfei Zhang qi Wu Jinhong Fan lumingMa School of Environment and Civil Engineering Dongguan University of TechnologyDongguan 523808China School of Art and Design Guangzhou Panyu PolytechnicGuangzhou 511483China National Engineering Research Center for Urban Pollution Control State Key Laboratory of Pollution Control and Resources ReuseCollege of Environmental Science and EngineeringTongji UniversityShanghai 200092China Dongguan Institute of Science and Technology Innovation Dongguan University of TechnologyDongguan 523808China School of Mechanical Engineering Dongguan University of TechnologyDongguan 523808China

Here,we report the production of 3D-printed MoS_(2)/Ni electrodes(3D-MoS_(2)/Ni)with longterm stability and excellent performance by the selective laser melting(SLM)technique.As a cathode,the obtained 3D-MoS_(2)/Ni could maintain a degradation rate above 94.0%for forfenicol(FLO)when repeatedly used 50 times in water.We also found that the removal rate of FLO by 3D-MoS_(2)/Ni was about 12 times higher than that of 3D-printed pure Ni(3D-Ni),attributed to the improved accessibility of H^(*).In addition,the electrochemical characterization results showed that the electrochemically active surface area of the 3D-MoS_(2)/Ni electrode is about 3-fold higher than that of the 3D-Ni electrode while the electrical resistance is 4 times lower.Based on tert-butanol suppression,electron paramagnetic resonance and triple quadrupole mass spectrometer experiments,a“dual path”mechanism and possible degradation pathway for the dechlorination of FLO by 3D-MoS_(2)/Ni were proposed.Furthermore,we also investigated the impacts of the cathode potential and the initial pH of the solution on the degradation of FLO.Overall,this study reveals that the SLM 3D printing technique is a promising approach for the rapid fabrication of high-stability metal electrodes,which could have broad application in the control of water contaminants in the environmental field.

关键词： 3D-print Electroreduction MoS_(2)/Ni Antibiotic Florfenicol