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线上直播教学在乡村医生学历提升教学实践中的应用

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教育教学论坛 2024年第6期 124-127页

作者：曹阳宋道群项鑫长春中医药大学继续教育学院吉林长春130117

随着网络信息化技术的不断发展,终身学习理念的推广和普及,“互联网+继续教育”在高等学历继续教育教学实践中应运而生。线上直播教学的优势与需求日益显现,由于乡村医生职业的特殊性,传统的线下教学模式很难适用于乡村医生学历提升的... 详细信息

随着网络信息化技术的不断发展,终身学习理念的推广和普及,“互联网+继续教育”在高等学历继续教育教学实践中应运而生。线上直播教学的优势与需求日益显现,由于乡村医生职业的特殊性,传统的线下教学模式很难适用于乡村医生学历提升的教学。以近几年长春中医药大学线上直播教学在乡村医生学历提升教学实践中的应用为例进行深入探讨,构建线上直播课程教学模式,分析线上直播教学的优势与困境,为乡村医生学历提升开展高质量线上教学提出相关意见,从而进一步提升教学质量。

关键词：乡村医生线上直播教学改革

Interface-directed epitaxially growing nickle ensembles as efficient catalysts in dry reforming of methane

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Journal of Energy Chemistry 2022年第3期31卷 502-513,I0014页

作者： Ping Wang song Wei Shiyi Wang Ronghe Lin Xiaoling mou Yunjie Ding Hangzhou Institute of Advanced Studies Zhejiang Normal UniversityHangzhou 311231ZhejiangChina School of Chemical Engineering and Light Industry Guangdong University of Technology.Guangzhou 510006GuangdongChina Analysis and Test Center Guangdong University of TechnologyGuangzhou 510006GuangdongChina Dalian National Laboratory for Clean Energy Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina The State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina

Supported nickel catalysts are promising candidates for dry reforming of methane, but agglomeration of Ni^(0) and coke deposition hinder the industrial applications. Herein, we report a novel interface-directed synthetic approach to construct distinct metal ensembles by carefully tuning the compositions of the carriers. A Zr-Mn-Zn ternary oxide-supported Ni catalyst, together with the respective binary oxide-supported analogues, was synthesized by adopting a sequential co-precipitation and wetness impregnation method. Combined characterization techniques identify distinct catalyst models, including (i) conventional NiO nanoparticles with different sizes on Zr-Mn and Zr-Zn, and (ii) epitaxially growing NiO ensembles of a few nanometers thickness at the periphery of ZnO_(x) particles. These catalysts exhibit divergent responses in the catalytic testing, with the ternary oxide system significantly outperforming the binary analogues. The strong electronic interactions between Mn-Ni increase Ni dispersion and the activity while the stability is strengthened upon Zn addition. Both high activity, high selectivity, and remarkable stability are attained upon co-adding Mn and Zn. The interfaces between Ni and Zr-Mn-Zn rather than the physical contacts of individual oxide-supported analogues through mechanical mixing are keys for the outstanding performance.

关键词： Methane dry reforming Nickel Interface Epitaxial growth Structure-performance relationship

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PET片材水浸泡液紫外吸收强度的研究

橡塑技术与装备 2024年第8期50卷 36-39页

作者：温浩宇牟松李国民四川宜宾普拉斯包装材料有限公司四川宜宾644007

通过对PET片材水浸泡液紫外吸收强度的研究,探讨了在波长220~360 nm范围内引起浸泡液出现吸收峰的原因。通过对PET片材加工过程的控制和助剂的加入,可以有效地减弱在所关注波长范围内的紫外吸收强度。

关键词： PET片材紫外吸收强度乙醛抗水解

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Decompositions of the Hardy space _z^1(Ω)

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Acta Mathematica Sinica,English Series 2005年第4期21卷 949-954页

作者： Zeng Jian LOU Shou Zhi YANG dao Jin song Department of Mathematics Shantou University Shantou 515063 P. R. China Teaching Division of Computer Science Shandong University of Technology Zibo 255091 P. R. China

We give a decomposition of the Hardy space Hz^1（Ω） into ＂div-curl＂ quantities for Lipschitz domains in R^n. We also prove a decomposition of Hz^1（Ω） into Jacobians det Du, u ∈ W0^1,2 （Ω,R^2） for Ω in R^2.... 详细信息

关键词： Hardy space Lipschitz domain, Jacobian determinant

Dissecting the cell microenvironment of ovarian endometrioma through single-cell RNA sequencing

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Science China Life Sciences 2024年

作者： Jiangpeng Wu Siyu Xia Wenting Ye Yan Sun Jing Cai Fubing Yu Haiping Wen Xiuwei Yi Taikang Li Mingwei Chen Jiayun Chen Ge song Chuanbin Yang Yali song Jigang Wang Department of Reproductive Medicine Dongguan Maternal and Child Health Care Hospital Department of Urology and Shenzhen Clinical Research Centre for Geriatrics Shenzhen People's Hospital Southern University of Science and Technology State Key Laboratory for Quality Ensurance and Sustainable Use of dao-di Herbs Artemisinin Research Center and Institute of Chinese Materia Medica China Academy of Chinese Medical Sciences Reproductive Medicine Center Foshan Women and Children Hospital State Key Laboratory of Antiviral Drugs School of Pharmacy Henan University

Ovarian endometrioma（OE）, also known as “chocolate cysts,” is a cystic mass that develops in the ovaries due to endometriosis and is a common gynecological condition characterized by the growth of endometrial tissue outside the uterus, leading to symptoms such as dysmenorrhea, pelvic pain, and infertility. However, the precise molecular and cellular mechanisms driving this pathophysiology remain largely unknown, posing challenges for diagnosis and treatment. Here, we employed integrated single-cell transcriptomic profiling of over52,000 individual cells from endometrial tissues of OE patients and healthy donors and identified twelve major cell populations. We identified notable alterations in cell type-specific proportions and molecular signatures associated with OE. Notably, the activation of IGFBP5+macrophages with pro-inflammatory properties, NK cell exhaustion, and aberrant proliferation of IQCG+and KLF2+epithelium are key features and may be the potential mechanisms underlying the pathogenesis of OE. Collectively, our data contribute to a better understanding of OE at the single cell level and may pave the way for the development of novel therapeutic strategies.

关键词： ovary high-throughput sequencing transcriptomics gene expression analysis ligand-receptor analysis

PDA MEASUREMENTS OF TWO-PHASE FLOW STRUCTURE AND PARTICLE DISPERSION FOR A PARTICLE-LADEN JET IN CROSSFLOW

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Journal of Hydrodynamics 2010年第1期22卷 9-18页

作者： FAN Jing-yu XU song-li WANG dao-zeng Shanghai Institute of Applied Mathematics and Mechanics Shanghai University Shanghai 200072 China

The two-phase flow structure and particle dispersion for a dilute particle-laden jet in crossflow （JICF） were experimentally investigated by means of Phase Doppler Anemometry （PDA） measurement. The two-phase flow experiments were conducted for different flow conditions and solid particle parameters, including the ratio of the jet velocity to crossflow velocity, the particle size and mass loading. The experimental results indicate that the fine particles with the size of 70 micron and the mass loading of 0.05% have a minor influence on the mean and fluctuation velocity fields of the two-phase JICF. However, the fine particle transport by the two-phase JICF is dominantly and preferentially affected by the shear layer vortices and exhibits a somewhat enhanced dispersion as compared to the fluid. For the coarse particles with the particle size ranging from 300 micron to 700 micron and the mass loading less than 0.16%, the effect of the particle parameters on the fluid phase is associated with both the anisotropic properties of the flow field and the trajectory deviation of the settling particles from the fluid. Compared to the single-phase JICF, the two-phase JICF laden with the coarse particles is recognized to possess more pronounced mean velocity alteration and turbulence modulation of the fluid phase in the presence of the particles with the larger particle size and higher mass loading.

关键词： jet crossflow two-phase flow structure particle dispersion Phase Doppler Anemometry (PDA) measurement

Magnetic field annealing of FeCo-based amorphous alloys to enhance thermal stability and Curie temperature

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Rare Metals 2023年第6期42卷 2000-2006页

作者： Zai-dao Li Wei-Wei Zhang Ge-Tian Li song-song Li Hong-Sheng Ding Tao Zhang Yu-Jun song Center for Modern Physics Technology Department of Applied PhysicsBeijing Key Laboratory for Magneto-Photoelectrical Composite and Interface ScienceUniversity of Science and Technology BeijingBeijing100083China School of Materials Science and Engineering Beihang UniversityBeijing100191China

Annealing temperatures and applied magnetic fields are two important parameters for the performance modification of magnetic *** article investigated the effect of different annealing temperatures on crystallization condition,magnetic properties and thermal stability of the amorphous magnetic alloy Co_(36)Fe_(36)Si_(4.8)B1_(9.2)Nb_(4)(at%).Results indicate that the annealing temperature can significantly affect the size and content of precipitated nanocrystals in the amorphous alloy,and the precipitation of nanocrystalline phases can result in the distinct change of magnetic properties and Curie *** the annealing was performed at 595 ℃ for 30 min under an applied transverse external magnetic field of 9550.0A·m^(-1),the amorphous alloy shows excellent soft magnetic properties with the saturation magnetization of alloy reaching 110.00 mA·m^(2)·g^(-1),the residual magnetic induction intensity of 4 × 10^(-6) T and the coercivity as low as57.3 A·m^(-1).Furthermore,the Curie temperature of the field-annealed samples can reach up to 440 0C,approximately 58℃ higher than that of the as-quenched species.

关键词： Soft magnetic alloys Amorphous alloy Field annealing

A Comparison Study of Wear and Fretting Fatigue Behavior Between Cr-alloyed Layer and Cr-Ti Solid-solution Layer

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Acta Metallurgica Sinica(English Letters) 2016年第8期29卷 782-792页

作者： Shou-Ming Yu dao-Xin Liu Xiao-Hua Zhang Cheng-song Liu School of Aeronautics Institute of Corrosion and ProtectionNorthwestern Polytechnical University

This work reported a comparison between the wear and fretting fatigue（FF） behaviors of a Cr-alloyed layer and a Cr-Ti solid-solution *** hardness and toughness of both layers were evaluated to support this *** results showed that the Cr-alloyed layer had high surface hardness but poor toughness,while the Cr-Ti solid-solution layer had excellent toughness but low *** FF properties of the modified Ti6A14 V alloy depended on the trade-off between two factors：wear resistance and fatigue *** the Cr-alloyed layer could effectively resist the wear in fretting areas,its poor toughness caused the fatigue resistance to drop sharply and hence led to a premature failure in FF *** to the relatively good fatigue resistance,the Cr-Ti solid-solution layer had slightly higher FF life than that of the Cr-alloyed layer;however,its low hardness resulted in severe wear in correspondence with the fretting area and thus a failure to improve the FF properties of Ti6A14 V *** combined with shot peening post-treatment,the FF life of both layers increased by about three times compared to that of the Ti6A14 V alloy.A further study showed that the poor toughness or low hardness still exerted negative influence on combination-treated samples.

关键词： Titanium alloy Plasma chromizing Shot peening Fretting fatigue Wear

Wireless Interference Classification with Low Complexity Multi-Branch Networks

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China Communications 2023年第4期20卷 382-394页

作者： song Ma Yufan Cheng Ying mou Pengyu Wang Qihang Peng Jun Wang National Key Laboratory of Science and Technology on Communications University of Electronic Science and Technology of ChinaChengdu 611731China School of Information and Communication Engineering University of Electronic Science and Technology of ChinaChengdu 611731China

In non-cooperative communication systems,wireless interference classification(WIC)is one of the most essential ***,deep learning(DL)based WIC methods have been ***,conventional DL-based WIC methods have high computational complexity and unsatisfactory accuracy,especially when the interference-tonoise ratio(INR)is *** this end,we propose three effective ***,we introduce multibranch convolutional neural networks(CNNs)for interference *** multi-branch CNN is constructed by repeating a layer that aggregates several transformations with the same topology,and it notably improves the recognition ability for *** design avoids the carefully crafted selection of each ***,multi-branch CNNs are computationally expensive and *** this end,we further propose Low complexity multibranch networks(LCMN),which are mathematically equivalent to multi-branch CNNs but maintain low computing costs and efficient ***,we present novel loss function,which encourages networks to have consistent prediction probabilities for samples with high visual similarities,resulting in increasing recognition accuracy of *** results demonstrate the proposed methods consistently boost the classification performance of WIC without substantially increasing computational overhead compared to traditional DL-based methods.

关键词： electromagnetic interference wireless interference identification deep learning multi-branch architectures