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北师大版初中数学新教材的特色及变化分析

教学与管理 2025年第1期 44-48页

作者：常海斌宁依敏首都师范大学教育学院北京100048 华东师范大学数学科学学院上海200241

深刻理解和准确解读教材是有效使用教材的前提。北师大版初中数学新教材遵循“教育本位”的教材编写理念,在章首语、栏目设置、问题解决、习题设计和素材选取上各具特色;教材整体采用跨领域混编、螺旋式上升和小结整合式的编写模式,着... 详细信息

深刻理解和准确解读教材是有效使用教材的前提。北师大版初中数学新教材遵循“教育本位”的教材编写理念,在章首语、栏目设置、问题解决、习题设计和素材选取上各具特色;教材整体采用跨领域混编、螺旋式上升和小结整合式的编写模式,着重凸显课程内容的结构化和认知过程的进阶性;四个学习领域以“研究对象”的形式进行内容整合,具有重视代数推理、重构统计量的组合形式以及对综合与实践领域进行主题迭代和核心创变等变化。

关键词：初中数学新教材教材编写特色北师大版教材新教材变化分析

Microbial remediation of aromatics-contaminated soil

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Frontiers of Environmental Science & Engineering 2017年第2期11卷 1-9页

作者： ying Xu ning-yi Zhou State Key Laboratory of Microbial Metabolism & School of Life Sciences and Biotechnology Shanghai Jiao Tong University Shanghai 200240 China

Aromatics-contaminated soil is of particular environmental concern as it exhibits carcinogenic and mutagenic properties. Bioremediation, a biological approach for the removal of soil contaminants, has several advantages over traditional soil remediation methodologies including high efficiency, complete pollutant removal, low expense and limited or no secondary pollution. Bioaugmentation, defined as the introduction of specific competent strains or consortia of microorganisms, is a widely applied bioremediation technology for soil remediation. In this review, it is concluded which several successful studies of bioaugmentation of aromatics-contaminated soil by single strains or mixed consortia. In recent decades, a number of reports have been published on the metabolic machinery of aromatics degradation by microorganisms and their capacity to adapt to aromatics-contaminated environments. Thus, microorganisms are major players in site remediation. The bioremediation/bioaugmentation process relies on the immense metabolic capacities of microbes for transformation of aromatic pollutants into essentially harmless or, at least, less toxic compounds. Aromatics-contaminated soils are successfully remediated with adding not only single strains but also bacterial or fungal consortia. Furthermore several novel approaches, which microbes combined with physical, chemical or biological factors, increase remediatio.n efl~.ciency of aromatics-contaminated soil. Meanwhile, the environmental factors also have appreciable impacts on the bioaugmentation process. The biostatistics method is recommended for analysis of the effects of bioaugmentation treatments.

关键词： Aromatics-contaminated soilBacteriaBioaugmentationBioremediationFungi

Synthesis and Structural Characterization of a New Hydrogen-bonded Polyrotaxane of [Co(H_2O)_6]_(2+) with 1,1′-(Propane-1,3-diyl)dipyridinium-4-carboxylate

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Chinese Journal of Structural Chemistry 2006年第8期25卷 957-964页

作者： JIANG ning-yi LI Song-Lin Department of Chemistry College of Science Tianjin University Tianjin 300072 China

A new double betaine 1,1′-（propane-1,3-diyl）dipyridinium-4-carboxylate L has been synthesized. Reaction of 1, 1′-（propane-1,3-diyl）dipyridinium-4-carboxylate tetrahydrate 1 with Co（ClO4）2-6H2O leads to the formation of a new Co（Ⅱ） coordination compound, namely [Co（H2O）6]-2H2O-2L-2ClO4 2. The crystal structures of 1 and 2 have been determined by single-crystal X-ray diffraction method. Crystal data for 1. monoclinic, space group C2/c, a = 18.945（4）, b = 7.700（2）, c = l 1.888（2）A,β = 101.67（3）°, V = 1698.3（6） A^3, Z = 4, F（000） = 760.0, Dc = 1.402 g/cm^3, the final R = 0.0607 and wR = 0.1607 for 950 observed reflections （1 〉 2σ（I））; and those for 2： monoclinic, space group P21/c, a = 17.982（1）, b = 15.879 （1）, c = 7.0716（5）/A,β= 100.675（1）°, V= 1984.3（3） ,A^3 Z= 4, F（000） = 1010.0, Dc = 1.631 g/cm^3, the final R = 0.0316 and wR = 0.0896 for 3784 observed reflections （1 〉20（I））. Crystal structure analysis indicates that in 1, molecules of L in a ＂V-shaped＂ conformation are linked to chains sustained by O-H…O hydrogen bonds between carboxylate groups and solvent water molecules. The chains are joined by O-H…O and C-H…O hydrogen bonds to further expand into a three-dimensional structure. For 2, molecules of L in a ＂Z-shaped＂ conformation are linked by hydrogen bonds between carboxylate groups and aqua ligands to form a chain of loops running down the b axis. The （2D→2D） polythreading in compound 2 represents the mode of parallel interpenetration of 2D sheets, having polyrotaxane character.

关键词： 1,1′-(propane-1,3-diyl)dipyridinium-4-carboxylate polyrotaxane hydrogen bonding betaine derivative

Highly sensitive piezoresistive pressure sensors based on laser-induced graphene with molybdenum disulfide nanoparticles

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Science China(Technological Sciences) 2021年第11期64卷 2408-2414页

作者： HAO DaPeng YANG RuoXi yi ning CHENG HuanYu School of Science Xi'an Aeronautical UniversityXi'an 710077China Department of Engineering Science and Mechanics The Pennsylvania Stale UniversityUniversity ParkState College PA 16802USA School of Mechanical Engineering Hebei University of Technology'Tianjin 300401China Department of Materials Science and Engineering The Pennsylvania State UniversityUniversity ParkState College PA 16802USA

Wearable pressure sensors have drawn significant attention because of their extensive applications in motion detection, tactile sensing, and health monitoring. However, the complex manufacturing process and high cost of active materials make low-cost,large-scale production elusive. In this work, we report a flexible piezoresistive pressure sensor assembled with two 3D laserinduced graphene(LIG) foam electrodes on a polyimide thin film from a simple laser scribing process in the ambient environment. The design of the air gap between the two foam electrodes allows the sensor to showcase a low limit of detection of 0.274 Pa, which provides favorable sensing performance in motion detection and wrist pulse monitoring. The addition of spherical MoS2 nanoparticles between the two foam electrodes further enhances the sensitivity to 88 k Pa-1 and increases the sensing range to significantly outperform the previous literature reports. The demonstrated LIG pressure sensors also exhibit fast response/recovery rates and excellent durability/repeatability.

关键词： piezoresistive pressure sensor laser-induced graphene foam molybdenum disulfide nanoparticles health monitoring

An FTIR Study of Kyanite in the Maobei Kyanite-Bearing Eclogites from the Sulu Orogenic Belt, Eastern China

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Journal of Earth Science 2018年第1期29卷 21-29页

作者： yi-ning Wu Yong-Feng Wang School of Earth Sciences China University of Geosciences State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Global Tectonic Center School of Earth Sciences China University of Geosciences

As a minor phase, kyanite has been repeatedly shown to have experienced ultrahigh pressure （UHP） metamorphism together with its host eclogites. Thus, it could play some role in trans- porting water into the deep earth. Here we present a detailed investigation of water concentrations of kyanite, and for reference, of garnet and omphacite from four Maobei eclogites in the Sulu orogenic belt, eastern China. Fourier transform infrared （FTIR） measurements show that kyanites, garnets, and omphacites all have distinct hydroxyl absorption bands due to OH groups bound in their crystal struc- ture. The FTIR profile analyses on ten grains from different samples reveal a homogeneous distribution of water across kyanite, suggesting insignificant water loss during exhumation. The calculated water concentrations in kyanite （21 wt ppm-41 wt ppm） are comparable to those reported previously for kyanite from various geological occurrences when using the most recent calibration. They are however much lower compared with those in garnet （46 wt ppm-83 wt ppm） and omphacite （302 wt ppm-548 wt ppm） from the Maobei eclogites. This implies that kyanite is not a major water carrier in eclogites con- sidering its low volume fraction and contributes negligibly to transport water into the deep mantle ac- companying subducted oceanic crust until its possible transformation to AISiO3OH.

关键词： kyanite water contents eclogite Sulu orogenic belt.

Constitutive aryl hydrocarbon receptor facilitates the regenerative potential of mouse bone marrow mesenchymal stromal cells

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World Journal of Stem Cells 2023年第8期15卷 807-820页

作者： Jing Huang yi-ning Wang yi Zhou State Key Laboratory of Oral&Maxillofacial Reconstruction and Regeneration Key Laboratory of Oral Biomedicine Ministry of EducationHubei Key Laboratory of StomatologySchool&Hospital of StomatologyWuhan UniversityWuhan 430079Hubei ProvinceChina

BACKGROUND Bone marrow mesenchymal stromal cells(BMSCs)are the commonly used seed cells in tissue *** hydrocarbon receptor(AhR)is a transcription factor involved in various cellular ***,the function of constitutive AhR in BMSCs remains *** To investigate the role of AhR in the osteogenic and macrophage-modulating potential of mouse BMSCs(mBMSCs)and the underlying *** Immunochemistry and immunofluorescent staining were used to observe the expression of AhR in mouse bone marrow tissue and *** overexpression or knockdown of AhR was achieved by lentivirus-mediated *** osteogenic potential was observed by alkaline phosphatase and alizarin red *** mRNA and protein levels of osteogenic markers were detected by quantitative polymerase chain reaction(qPCR)and western *** coculture with different mBMSCs,the cluster of differentiation(CD)86 and CD206 expressions levels in RAW 264.7 cells were analyzed by flow *** explore the underlying molecular mechanism,the interaction of AhR with signal transducer and activator of transcription 3(STAT3)was observed by co-immunoprecipitation and phosphorylation of STAT3 was detected by western *** AhR expressions in mouse bone marrow tissue and isolated mBMSCs were *** overexpression enhanced the osteogenic potential of mBMSCs while AhR knockdown suppressed *** ratio of CD86+RAW 264.7 cells cocultured with AhR-overexpressed mBMSCs was reduced and that of CD206+cells was *** directly interacted with *** overexpression increased the phosphorylation of *** inhibition of STAT3 via stattic,the promotive effects of AhR overexpression on the osteogenic differentiation and macrophage-modulating were partially *** AhR plays a beneficial role in the regenerative potential of mBMSCs partially by increasing phosphorylation of STAT3.

关键词： Aryl hydrocarbon receptor Bone marrow mesenchymal stromal cells Osteogenesis Macrophage Signal transducer and activator of transcription 3 Interaction

Phosphine-Catalyzed [4+3] Annulation Reaction of Indole Derivatives with MBH Carbonates:A Facile Access to Indole-1,2-fused 1,4-Diazepinones and Azepines

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Chinese Journal of Chemistry 2024年第3期42卷 271-275页

作者： Yannan Zhu Haoran Jiang yi-ning Wang Faculty of Chemistry and Chemical Engineering Yancheng Institute of TechnologyYanchengJiangsu224051 China

A phosphine-catalyzed [4+3] annulation between dinucleophilic indole derivatives and Morita−Baylis−Hillman (MBH) carbonates was discovered by using the N1 and N4′/C4′ nucleophilicities of the indole precursors,in which indoles act as four atom synthons. This protocol provides an efficient and facile access to indole-1,2-fused 1,4-diazepinones and azepines in good to high yields in one step,which illustrates potential synthetic utilities in drug discovery.

关键词： Phosphine catalysis [4+3]Annulation Indole derivatives Nitrogen heterocycles Organocatalysis

A two-stage amplifier of laser eavesdropping model based on waveguide fiber taper

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Defence Technology（防务技术） 2019年第1期15卷 95-97页

作者： Mei-ting Wang Yan Zhu yi-ning Mu School of Science Changchun University of Science and Technology

In order to improve ability of amplification about optical arrival angle in laser eavesdropping system, and enhance receiving field of view (FOV) of laser eavesdropping system, this paper presents a new multistage amplifier laser eavesdropping model based on waveguide fiber taper. First of all, taking about four-quadrant (4QD) laser eavesdropping model as an example, from the theoretical view, analyses factors that, currently, laser eavesdropping system face many restrictive factors during practical applications. Besides, from the receiving FOV and ability of amplification about arrival angle of incoming optical axis angles, systematically analyses advantages of multi-stage amplifier model. What’s more,through constructing laser eavesdropping test platform, we demonstrate Signal to Noise Ratio(SNR) of two stage amplification model is eventually promoted to 6-10 dB compared with one amplifying model,especially in low and high audio level, the advantages is more obvious.

关键词： Laser eavesdropping Waveguide fiber taper 4QD

Spatial dynamic patterns of saltmarsh vegetation in southern Hangzhou Bay:Exotic and native species

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Water Science and Engineering 2020年第1期13卷 34-44页

作者： Si-long Huang yi-ning Chen Yan Li Second Institute of Oceanography Ministry of Natural ResourcesHangzhou 310012China State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China Dongshan Swire Marine Station Xiamen UniversityXiamen 361005China

A saltmarsh has developed rapidly on the mudflat of Andong Shoal,in southern Hangzhou Bay,over the last decade since *** saltmarsh vegetation changes are driven by both sediment dynamic conditions and the competition between the exotic species Spartina alterniflora(***) and the native species Scirpus mariqueter(***).This study attempted to investigate large-scale spatial variations in the exotic and native species,by analyzing and interpreting a time series(2016-2018) of high-resolution(less than 1 m) remote sensing *** total area of the saltmarsh increased at a rate of 1.07 km^2/year,due to the accretion of the whole tidal *** spatial patterns revealed a new bimodal pattern for *** *** expanded over the upper to middle saltmarsh at a rate of1.68 km2/***,the *** patches at the seaward edge expanded at a negative rate of-0.005 km^2/year,indicating a different pattern in competition:*** had more advantages in the upper saltmarsh,while *** had more advantages in the pioneer zone with low ***,*** mainly established new habitats by invading *** in the middle saltmarsh,but *** occupied the bare mudflat for *** results aindicated that the interspecific competition result between *** and *** depended on elevation,and low elevation might create a favorable environment for *** to win the competition with exotic *** finding could be applied to future invasive species control and saltmarsh management.

关键词： Saltmarsh Spartina alterniflora Scirpus mariqueter Spatial variation Competition Exotic species Native species