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物联网技术在高中信息技术课程中的应用

信息与电脑 2024年第5期36卷 242-244页

作者：苗莉俪甘肃省兰州市永登县第六中学甘肃兰州730300

随着信息技术的迅速发展,物联网作为一种新兴技术,已成为信息科学领域的重要组成部分。文章首先介绍了物联网技术的基本概念和特点,其次分析了将物联网技术融入高中信息技术课程的必要性和可行性,再次分析了物联网技术在提高学生能力方... 详细信息

随着信息技术的迅速发展,物联网作为一种新兴技术,已成为信息科学领域的重要组成部分。文章首先介绍了物联网技术的基本概念和特点,其次分析了将物联网技术融入高中信息技术课程的必要性和可行性,再次分析了物联网技术在提高学生能力方面的应用,最后提出了一些实施物联网教学的建议,旨在为高中信息技术教育的改革和发展提供参考。

关键词：物联网技术高中信息技术课程

鄂尔多斯盆地西缘奥陶系乌拉力克组海相页岩气储层甜点分类评价

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石油实验地质 2024年第1期46卷 191-201页

作者：张琳琳王孔杰赖枫鹏郭伟苗丽丽中国地质大学(北京)能源学院北京100083 非常规天然气能源地质评价与开发工程北京市重点实验室北京100083 中国石油川庆钻探工程有限公司长庆井下技术作业公司西安710016 中国石油长城钻探工程有限公司地质研究院辽宁盘锦124010 中国地质大学(北京) 北京100083

甜点评价对页岩气藏高效勘探开发具有重要意义。以鄂尔多斯盆地西缘奥陶系乌拉力克组页岩储层为研究对象,通过岩石薄片分析、X射线衍射、SEM扫描电镜、低温氮气吸附、等温吸附、总有机碳(TOC)含量、有机质镜质体反射率(Ro)测试和三轴岩... 详细信息

甜点评价对页岩气藏高效勘探开发具有重要意义。以鄂尔多斯盆地西缘奥陶系乌拉力克组页岩储层为研究对象,通过岩石薄片分析、X射线衍射、SEM扫描电镜、低温氮气吸附、等温吸附、总有机碳(TOC)含量、有机质镜质体反射率(Ro)测试和三轴岩石力学测试8个实验,得到目标区岩石类型为灰褐色泥页岩,孔径集中分布在2~4 nm和35~61 nm,主要发育粒间孔、黏土矿物层间孔和粒内孔;总有机碳含量平均为1.01%,Ro值平均为1.75%,脆性指数平均为47.8%。通过分析不同因素对页岩储层甜点区评选及评价的影响,认为硅质矿物含量、黏土矿物含量、孔比表面积、总有机碳含量和Ro值对储层的吸附性能起决定作用,孔径大小和孔隙类型数量控制储层的储集性能,脆性矿物含量和岩石力学参数影响储层的可压性。根据地质甜点评价的吸附性能和储集性能两个指标以及工程甜点的可压性指标,完成了不同特征对应的参数指标细分类,初步建立了鄂尔多斯盆地西缘奥陶系乌拉力克组海相页岩气储层3个等级的地质甜点和可压性甜点的分类评价方案,结果表明目标区各特征参数均达到Ⅱ级标准,可以作为页岩气开发甜点区。

关键词：评价分类室内实验储层甜点海相页岩气乌拉力克组奥陶系鄂尔多斯盆地

Microbiome analysis and-omics studies of microbial denitrification processes in wastewater treatment: recent advances

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Science China(Life Sciences) 2018年第7期61卷 753-761页

作者： lili miao Zhipei Liu State Key Laboratory of Microbial Resources Institute of Microbiology Chinese Academy of Sciences

Nitrogen pollution is an increasingly severe worldwide problem because of drainage of nitrogen-containing wastewater and intensive application of nitrogen-containing fertilizers. Denitrification, a key process in nitrogen cycles, is commonly employed for nitrogen removal in engineered wastewater treatment systems. Biological denitrification is performed by denitrifying microbes(bacteria) that use nitrate as terminal electron acceptor. Better understanding the functions of diverse microbial populations in denitrification-based wastewater treatment systems, and the interactions of these populations with operating environments, is essential for improving both treatment performance and system stability. Recent advances in "meta-omics"(e.g., genomics, transcriptomics, proteomics, metabolomics), other molecular biology tools, and microbiome analysis have greatly enhanced such understanding. This minireview summarizes recent findings regarding microbial community structure and composition, key functional microbes and their physiology, functional genes involved in nitrogen cycle, and responses of microbes and their genes to changes of environmental factors or operating parameters, in denitrification processes in wastewater treatment systems. Of particular interest are heterotrophic denitrification systems(which require alternative organic carbon sources) and the autotrophic denitrification systems(which do not require an external carbon source). Integrated microbiome and-omics approaches have great future potential for determination of optimal environmental and biotechnological parameters,novel process development, and improvement of nitrogen removal efficiency and system stability.

关键词： wastewater treatment nitrogen removal denitrification microbiome analysis

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超声诊断儿童食管异物

中国介入影像与治疗学 2024年第6期21卷 354-357页

作者：庞焕平刘庆华刘小芳苗莉莉闫玉玺山东大学附属儿童医院超声科山东济南250022

目的观察超声诊断儿童食管异物的价值。方法回顾性分析45例食管异物患儿食管超声表现,评估其诊断价值。结果45例中,颈段食管异物40例(40/45,88.89%)、胸段食管异物5例(5/45,11.11%)。食管超声正确诊断44例食管异物,准确率为97.78%(44/45... 详细信息

目的观察超声诊断儿童食管异物的价值。方法回顾性分析45例食管异物患儿食管超声表现,评估其诊断价值。结果45例中,颈段食管异物40例(40/45,88.89%)、胸段食管异物5例(5/45,11.11%)。食管超声正确诊断44例食管异物,准确率为97.78%(44/45)。各种异物中,果核类呈弧形强回声、后方伴声影,塑料贴纸类表现为边缘清晰的条状强回声,骨头及鱼刺类呈不规则/细条状强回声,纽扣电池表现为弧形/短条状强回声后方伴声影,熟蛋清表现为不规则块状无回声,果肉、玩具部件及硬币等多表现为食管内不同形状中等、强或混合回声,金属类异物强回声后方见“彗星尾”征。超声检出的44例食管异物中,31例(31/44,70.45%)异物周围管壁未见异常改变,7例(7/44,15.91%)见黏膜坏死损伤、溃疡形成,3例(3/44,6.82%)管壁炎性水肿,3例(3/44,6.82%)合并食管穿孔。结论超声诊断儿童食管异物便捷、可行,准确率高。

关键词：食管异物儿童超声检查

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Supplier Development under Supply Risk and Reputational Risk

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Journal of Systems Science and Systems Engineering 2024年第3期33卷 360-388页

作者： Zhaowei miao Yu Wang Rongjing Zhu lili Shangguan School of Management Xiamen UniversityXiamen361005China School of Economics and Management Tsinghua UniversityBeijing100084China

This paper considers the supplier investment decision-making problem in a supply chain consisting of an original equipment manufacturer(OEM),a global supplier,and a local *** reduce dependence on global suppliers and improve supply stability,we develop a differential game model to investigate the optimal investment decisions of the OEM towards the local supplier under different risk scenarios and the impact of different risks on the optimal *** results show that investment efficiency and risks have a significant impact on OEM investment ***,when the OEM has higher investment efficiency,investing in the local supplier is profitable for the OEM;conversely,when the investment efficiency of the OEM is lower,it does not *** addition,an increase in the supply risk of the global supplier will lower the entry threshold for OEM investment,but an increase in the supply risk of the local supplier and the reputational risk of both will increase this threshold,meaning that only the OEM with significantly higher investment efficiency can profit.

关键词： Supplier investment supplier development supply risk reputational risk dual sourcing

Oxidation and detection of L-cysteine using a modified Au/Nafion/glass carbon electrode

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Science China Chemistry 2011年第3期54卷 521-525页

作者： WANG XueJi ZHANG lili miao LiXiao KAN MeiXiu KONG LinLin ZHANG HuiMin School of Science Beijing Institute of Technology Beijing 100081 China

In this work,the electrochemical oxidation of L-cysteine(CySH)was investigated on a composite film modified electrode with Au nanoparticles dispersed in the fluorocarbon polymer(Nafion).The excellent electrocatalytic effect on CySH oxidation was attributed to the role of Au *** voltammetric studies revealed two anodic peaks for the oxidation of CySH in the pH range of 2.0–*** electrode was used to detect cysteine at pH 2.0 and pH *** pH 2.0,a determination range of 3.0–50.0?mol/L was obtained with the detection sensitivity of 22.7A/(mmol L1),while at pH 7.0,a determination range of 2.0–80.0mol/L was obtained with the detection sensitivity of 4.08A/(mmol L1).The detection limits were estimated to be as low as 1.0?mol/L at both pH 7.0 and pH ***,at pH 7.0,the interferences of ascorbic acid and uric acid were reduced for the detection of *** made the Au/Nafion/GC electrode a promising candidate for efficient electrochemical sensors for the detection of CySH.

关键词： L-cysteine composite film gold nanoparticles Nafion detection

Highly stable femtosecond pulse generation from a MXene Ti_3C_2T_x(T = F, O, or OH) mode-locked fiber laser

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Photonics Research 2019年第3期7卷 260-264页

作者： JIE LI ZILONG ZHANG LIN DU lili miao JUN YI BIN HUANG YANHONG ZOU CHUJUN ZHAO SHUANGCHUN WEN Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education & Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices School of Physics and Electronics Hunan University

Ultrafast fiber lasers are in great demand for various applications, such as optical communication, spectroscopy,biomedical diagnosis, and industrial fabrication. Here, we report the highly stable femtosecond pulse generation from a MXene mode-locked fiber laser. We have prepared the high-quality Ti_3C_2 T_x nanosheets via the etching method, and characterized their ultrafast dynamics and broadband nonlinear optical responses. The obvious intensity-and wavelength-dependent nonlinear responses have been observed and investigated. In addition, a highly stable femtosecond fiber laser with signal-to-noise ratio up to 70.7 dB and central wavelength of 1567.3 nm has been delivered. The study may provide some valuable design guidelines for the development of ultrafast, broadband nonlinear optical modulators, and open new avenues toward advanced photonic devices based on MXenes.

关键词： Ultrafast fiber lasers femtosecond pulse MXene Ti3C2Tx(T = F, O, or OH) mode-locked fiber laser

组织RP11-388M20.1水平对胃癌根治术患者预后的评估价值

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临床肿瘤学杂志 2024年第4期29卷 251-254页

作者：苗丽丽孙佳兴商颖蔡君东蔡静清承德市第三医院检验科河北承德067000

目的探讨胃癌组织中长链非编码RNA RP11-388M20.1水平及其评估胃癌根治术患者预后的价值。方法选取2018年1月至2020年12月于本院行胃癌根治术的患者103例,采用实时荧光定量PCR检测RP11-388M20.1在胃癌组织及对应癌旁组织中的表达差异... 详细信息

目的探讨胃癌组织中长链非编码RNA RP11-388M20.1水平及其评估胃癌根治术患者预后的价值。方法选取2018年1月至2020年12月于本院行胃癌根治术的患者103例,采用实时荧光定量PCR检测RP11-388M20.1在胃癌组织及对应癌旁组织中的表达差异,分析RP11-388M20.1水平与胃癌患者临床病理特征的关系,采用Kaplan-Meier生存曲线并基于Cox比例风险模型分析RP11-388M20.1在胃癌根治术患者预后预测中的价值。结果 103例胃癌组织的RP11-388M20.1水平为5.013±0.184,高于癌旁组织的1.471±0.056(t=18.399,P<0.001)。RP11-388M20.1在胃癌组织中的表达显著与TNM分期(P=0.005)、肿瘤大小(P=0.038)、分化程度(P=0.002)、T分期(P=0.029)和癌胚抗原状态(P=0.022)有关。单因素分析结果显示RP11-388M20.1表达与胃癌预后有关,其中RP11-388M20.1低表达者的中位无病生存期未达,优于高表达者的36个月(HR=2.936,95%CI:1.808~4.768,P<0.001);多因素分析显示RP11-388M20.1高表达是胃癌预后不良的危险因素(HR=2.076,95%CI:1.070~4.026,P=0.031)。结论 RP11-388M20.1在胃癌组织中是一种过表达的长链非编码RNA,且与胃癌进展和不良预后有关,有作为胃癌诊治靶点的潜能。

关键词：胃癌长链非编码RNA RP11-388M20.1 临床意义

Broadband Pulsed Fiber Laser Generation with Topological Insulator: Towards the Mid-Infrared Regime

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Journal of Electronic Science and Technology 2015年第4期13卷 298-304页

作者： Guobao Jiang lili miao Yu Chen Shunbin Lu Shuqing Chen Chujun Zhao Han Zhang Shuangchun Wen the Key Laboratory for Micro-/Nano-Optoelectronic Devices of Ministry of Education School of Physics and Electronics Hunan University the Key Laboratory for Micro-/Nano-Optoelectronic Devices of Ministry of Education School of Physics and Electronics Hunan University SZU-NUS Collaborative Innovation Center for Optoelectronic Science & Technology Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province Shenzhen University

In recent years, topological insulators have aroused the attention of a great number of scientists due to their unique electronic structures and peculiar physical properties. Triggered by the similar electronic structures as graphene, the broadband nonlinear absorption properties of topological insulator were investigated. Moreover, the mode-locked or Q-switched fiber lasers based on topological insulator were realized for broadband operating wavelength. Here, we present an overview of the preparation, transferring, linear and nonlinear optical properties and their applications of topological insulators in pulsed fiber lasers. The pulsed fiber lasers towards mid- infrared regimes have been proposed.

关键词： Mode-locking Q-switching saturableabsorption topological insulator.