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微项目式学习视域下初中语文说明文教学

语文教学之友 2025年第1期44卷 15-17页

作者：吴丹江苏省无锡市东林中学

《义务教育语文课程标准(2022年版)》重视学生核心素养的提升。“素养本位”的理念推动了课堂教学形式的创新。微项目式学习作为一种以提高学生综合能力为目标的学习方式,其本质与新课标契合。在课堂中尝试微项目式学习能够有效促进学... 详细信息

《义务教育语文课程标准(2022年版)》重视学生核心素养的提升。“素养本位”的理念推动了课堂教学形式的创新。微项目式学习作为一种以提高学生综合能力为目标的学习方式,其本质与新课标契合。在课堂中尝试微项目式学习能够有效促进学生核心素养的提升。

关键词：微项目式学习初中语文核心素养

On Global Existence for Mass-supercritical Nonlinear Fractional Hartree Equations

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Acta Mathematicae Applicatae Sinica 2017年第2期33卷 389-400页

作者： dan wu College of Mathematics and Econometrics Hunan University Changsha 410082 China

In this paper, we consider the nonlinear fractional Schr6dinger equations with Hartree type nonlin- earity in mass-supercritical and energy-subcritical case. Pohozaev identity, we established a threshold condition spa... 详细信息

关键词： mass-supercritical fractional nonlinear SchrSdinger equation Hartree global existence Pohozaev identity

Progress of continuously rotating detonation engines

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Chinese Journal of Aeronautics 2016年第1期29卷 15-29页

作者： Zhou Rui wu dan Wang Jianping Center for Combustion and Propulsion College of Engineering Peking University Center for Applied Physics and Technology Peking University State Key Laboratory for Turbulence & Complex Systems Peking University

Continuously rotating detonation engine （CRDE） is a focus for concern in the field of aerospace propulsion. It has several advantages, including one-initiation, high thermal efficiency and simple structure. Due to these characteristics, it is expected to bring revolutionary advance- ments to aviation and aerospace propulsion systems and now has drawn much attention throughout the world. In this paper, an overview of the development of CRDE is given from several aspects： basic concepts, applications, experimental studies, numerical simulations, and so on. Representative results and outstanding contributions are summarized and the unresolved issues for further engi- neerin~ applications of CRDE are 13rovided.

关键词： Aerospace Continuously rotatingdetonation CRDE Detonation engine Propulsion system

How does a strong surrounding magnetic field influence the evolution of a supernova remnant?

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Research in Astronomy and Astrophysics 2019年第9期19卷 21-28页

作者： dan wu Meng-Fei Zhang College of Information Science and Technology Beijing Normal UniversityBeijing100875China University of Chinese Academy of Sciences Beijing100049China Key Laboratory of Optical Astronomy National Astronomical ObservatoriesChinese Academy of SciencesBeijing100101China

We simulate the evolution of supernova remnants(SNRs) in a strong magnetic field. Usually,supernovae explode in a normal interstellar medium with magnetic field of no more than 50 μG, which has been well studied. However, the surrounding magnetic field will be much stronger in some situations, such as in a galactic center. Therefore, we try to explore these situations. The simulations show that a strong magnetic field of 1 mG will align the motion of ejecta in a way similar to a jet. The ejecta propagating perpendicularly to the magnetic field will be reflected and generate a strong reverse shock. When the reverse shock converges in the explosion center, it will more or less flow along the central magnetic field. Finally,most of the ejecta will propagate parallel to the magnetic field.

关键词： ISM:supernova remnants ISM:magnetic fields magnetohydrodynamics

Extracting copper from copper oxide ore by a zwitterionic reagent and dissolution kinetics

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International Journal of Minerals,Metallurgy and Materials 2015年第3期22卷 241-248页

作者： Jiu-shuai Deng Shu-ming Wen Jian-ying Deng dan-dan wu State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Faculty of Land Resource Engineering Kunming University of Science and Technology

Sulfamic acid （SA）, which possesses a zwitterionic structure, was applied as a leaching reagent for the first time for extracting copper from copper oxide ore. The effects of reaction time, temperature, particle size, reagent concentration, and stirring speed on this leach- ing were studied. The dissolution kinetics of malachite was illustrated with a three-dimensional diffusion model. A novel leaching effect of SA on malachite was eventually demonstrated. The leaching rate increased with decreasing particle size and increasing concentration, reac- tion temperature and stirring speed. The activation energy for SA leaching malachite was 33.23 kJ/mol. Furthermore, the effectiveness of SA as a new reagent for extracting copper from copper oxide ore was confirmed by experiment. This approach may provide a solution suitable for subsequent electrowinning. In addition, results reported herein may provide basic data that enable the leaching of other carbonate miner- als of copper, zinc, cobalt and so on in an SA system.

关键词： malachite copper extraction sulfamic acid dissolution kinetics

Low levels of Bax inhibitor-1 gene expression increase tunicamycin-induced apoptosis in human neuroblastoma SY5Y cells

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Neural Regeneration Research 2012年第17期7卷 1331-1337页

作者： dan wu Peirong Wang Shiyao Wang Department of Medical Genetics School of Basic Medical SciencesPeking UniversityBeijing 100191China Institute of Biophysics Chinese Academy of SciencesBeijing 100190China

A human SH-SY5Y neuroblastoma cell line with a low level of Bax inhibitor-1 expression was established by lentivirus-mediated RNA interference and fluorescence-activated cell sorting. In control SH-SY5Y cells, tunicamycin treatment induced endoplasmic reticulum stress-mediated apoptosis; however, after Bax inhibitor-1 gene knockdown, cell survival rates were significantly decreased and the degree of apoptosis was significantly increased following tunicamycin treatment In addition, chromatin condensation and apparent apoptotic phenomena, such as marginalization and cytoplasmic vesicles, were observed. Our findings indicate that Bax inhibitor-1 can delay apoptosis induced by endoplasmic reticulum stress.

关键词： Bax inhibitor-1 RNA interference SH-SY5Y endoplasmic reticulum stress tunicamycin apoptosis neural regeneration

Therapeutic application of hydrogen sulfide donors： the potential and challenges

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Frontiers of Medicine 2016年第1期10卷 18-27页

作者： dan wu Qingxun Hu Yizhun Zhu Department of Pharmacology School of Pharmacy Fudan University Shanghai 201203 China Department of Pharmacy Tongji Hospital Tongji University Sc-hool of Meclicine Shanghai 200065 China

Hydrogen sulfide （HeS）, a colorless gas smelling of rotten egg, has long been considered a toxic gas and environment hazard. However, evidences show that H2S plays a great role in many physiological and pathological activities, and it exhibits different effects when applied at various doses. In this review, we summarize the chemistry and biomedical applications of H2S-releasing compounds, including inorganic salts, phosphorodithioate derivatives, derivatives of Allium sativum extracts, derivatives of thioaminoacids, and derivatives of anti- inflammatory drugs.

关键词： hydrogen sulfide cardiovascular cancer hypertension

Optical Trapping and Manipulation Using Optical Fibers

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Advanced Fiber Materials 2019年第2期1卷 83-100页

作者： Yuanhao Lou dan wu Yuanjie Pang School of Optical and Electronic Information and wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan430074HubeiChina

An optical trap forms a restoring optical force field to immobilize and manipulate tiny objects.A fiber optical trap is capable of establishing the restoring optical force field using one or a few pieces of optical fiber,and it greatly simplifies the optical setup by removing bulky optical components,such as microscope objectives from the working *** also inherits other major advantages of optical fibers:flexible in shape,robust against disturbance,and highly integrative with fiber-optic sys-tems and on-chip *** review will begin with a concise introduction on the principle of optical trapping techniques,followed by a comprehensive discussion on different types of fiber optical traps,including their structures,functionalities and associated fabrication techniques.A brief outlook to the future development and potential applications of fiber optical traps is given at the end.

关键词： Fiber optical traps Optical trapping Optical manipulation Optical fiber

Effects of Afforestation on Carbon Storage in Boyang Lake Basin,China

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Chinese Geographical Science 2013年第6期23卷 647-654页

作者： wu dan SHAO Quanqin LI Jia Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences

By using field survey data from the sixth forest inventory of Jiangxi Province in 2003,the biomass and carbon storage for three studied species(Pinus massoniana,Cunninghamia lanceolata,and Pinus elliottii)were estimated in Taihe and Xingguo counties of Boyang Lake Basin,Jiangxi Province,*** relationship between carbon density and forest age was analyzed by logistic ***-temporal dynamics of forest biomass and carbon storage in 1985–2003 were also *** results show that total stand area of the three forest species was 3.10×105ha,total biomass 22.20 Tg,vegetation carbon storage 13.07 Tg C,and average carbon density 42.36 Mg C/ha in the study area in *** storage by forest type in descending order was:***,*** and *** storage by forest age group in descending order was:middle stand,young stand,near-mature stand and mature *** storage by plantation forests was 1.89 times higher than that by natural *** density of the three species increased 8.58 Mg C/ha during the study *** carbon density of Taihe County was higher in the east and west,and lower in the *** carbon density of Xingguo County was higher in the northeast and lower in the *** general,the carbon density increased with altitude and *** projects contribute significantly to increasing stand area and carbon *** forest management may improve the carbon sequestration capacity of forest ecosystems.

关键词： carbon storage carbon density forest inventory data Biomass Expansion Factor Boyang Lake Basin