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课程思政融入高职大学英语教学的探索——以《新职业英语1》Unit 4 Reading A Qipao为例

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武汉工程职业技术学院学报 2024年第3期36卷 77-80页

作者：张学津武汉工程职业技术学院湖北武汉430080

以《新职业综合英语1》第四单元阅读篇章A《旗袍》为例,从分析本校大学英语课程基本信息入手,课前就“工匠精神”融入职业英语教学做初步设计,课中通过阅读任务对学生思想变化实行“动态追踪”,课后通过情景化实践作业将“工匠精神”内... 详细信息

以《新职业综合英语1》第四单元阅读篇章A《旗袍》为例,从分析本校大学英语课程基本信息入手,课前就“工匠精神”融入职业英语教学做初步设计,课中通过阅读任务对学生思想变化实行“动态追踪”,课后通过情景化实践作业将“工匠精神”内化为学生个人品质,从而达到英语应用能力培养与课程思政协同育人的目的。

关键词：工匠精神课程思政大学英语教学

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阻燃纤维素气凝胶研究进展

中国造纸 2024年第4期43卷 25-36页

作者：林铭增许银超张学金郭大亮沙力争浙江科技大学环境与资源学院浙江杭州310023

纤维素作为天然高分子材料一直受到研究人员的广泛关注。其中,纤维素气凝胶凭借其可生物降解性、多孔性等特点,在阻燃隔热等领域展现出应用潜力。本文介绍了纤维素气凝胶的特点及制备方法,并对不同阻燃纤维素气凝胶的阻燃原理、优缺点... 详细信息

纤维素作为天然高分子材料一直受到研究人员的广泛关注。其中,纤维素气凝胶凭借其可生物降解性、多孔性等特点,在阻燃隔热等领域展现出应用潜力。本文介绍了纤维素气凝胶的特点及制备方法,并对不同阻燃纤维素气凝胶的阻燃原理、优缺点和研究现状进行了详细综述。最后对阻燃纤维素气凝胶现有难点和发展前景进行了展望,提升阻燃效果和探索绿色、经济、可连续的生产方法是今后阻燃纤维素气凝胶重要的研究方向。

关键词：纤维素纳米纤维素气凝胶阻燃复合材料

Surface Exciton-Plasmon Polariton Enhanced Light Emission via Integration of Single Semiconductor Nanowires with Metal Nanostructures

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Nano Research 2009年第1期2卷 47-53页

作者： xuejin zhang Pengwei Wang Xinzheng zhang Jun Xu Yongyuan Zhu Dapeng Yu State Key Laboratory for Mesoscopic Physics and Electron Microscopy LaboratoryDepartment of PhysicsPeking UniversityBeijing 100871China National Laboratory of Solid State Microstructures Nanjing UniversityNanjing 210093China

The light emission enhancement behavior from single ZnO nanowires integrated with metallic contacts is investigated by micro-photoluminescence *** from surface plasmon polaritons at the air/metal interface,the emission of a single ZnO nanowire can be coupled into guided modes of surface exciton-plasmon polaritons(SEPPs).The out-coupling avenues of SEPP guided modes are modeled in the presence of nanostructures,such as corrugation and gratings,on the metal *** guided modes of SEPPs in metal-contacted ZnO nanowires are calculated using the effective index *** enhanced light emission from single semiconductor nanowires shows promise for use in highly efficient nano-emitters and nano-lasers,as well as macroscopic solid state light sources with very high efficiency.

关键词： Semiconductor nanowires surface plasmon polaritons nanowire waveguides emission enhancement gratings

实现船舶电网稳定运行的变频负载控制系统设计

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微型电脑应用 2024年第9期40卷 238-241页

作者：王刚毅张学瑾于泽程中国船舶集团有限公司第七〇四研究所上海200031

采用实现船舶电网稳定运行的变频负载控制方法可以有效解决船舶电网负载突加时引起的主机超负荷、电网频率低频振荡等方面问题,尤其适用于大型变频负载较多的电力推进船舶。基于船舶电网和变频负载的技术,设计实现船舶电网稳定运行的变... 详细信息

采用实现船舶电网稳定运行的变频负载控制方法可以有效解决船舶电网负载突加时引起的主机超负荷、电网频率低频振荡等方面问题,尤其适用于大型变频负载较多的电力推进船舶。基于船舶电网和变频负载的技术,设计实现船舶电网稳定运行的变频负载控制系统,阐述系统总体架构方案,给出目标负载功率计算方法和负载实时输出功率计算方法。系统的变频负载控制时效性强,可以避免电网产生较大的功率或频率波动和功率或频率越限,提高机组的使用寿命,实现电网的安全稳定运行,对于变频负载配置较多的船舶综合电力系统设计有一定的借鉴意义。

关键词：船舶电网变频负载目标负载功率实时输出功率

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淤泥质土浅埋暗挖隧道下穿既有管线影响研究

铁道工程学报 2020年第7期37卷 77-83页

作者：张学进中铁一局集团有限公司西安710054

研究目的:城市浅埋暗挖隧道经常近距离下穿既有建筑物,因此针对开挖引起地层及结构的变形影响研究具有重要意义.依托杭州市紫之隧道下穿既有地下管线工程,采用三维有限元数值模拟,研究在淤泥质地层中隧道底到地表距离H、隧道与管线夹角... 详细信息

研究目的:城市浅埋暗挖隧道经常近距离下穿既有建筑物,因此针对开挖引起地层及结构的变形影响研究具有重要意义.依托杭州市紫之隧道下穿既有地下管线工程,采用三维有限元数值模拟,研究在淤泥质地层中隧道底到地表距离H、隧道与管线夹角θ等因素对管线和地层变形的影响.研究结论:(1)与隧道交汇处的管线变形具有先缓慢沉降,接着快速沉降,最后逐渐趋于稳定的三阶段沉降规律;(2)管线的最小沉降量均位于管线的起始端,而最大沉降量随着θ的增大,逐渐从管线的末端向管线的中间段移动;(3)相同θ下,随着H的增大,管线最大沉降量逐渐增大;而相同H下,随着θ的增大,管线最大沉降量逐渐减小;(4)本研究成果可为淤泥质地层隧道下穿既有管线工程精细化设计与施工提供参考.

关键词：淤泥质土浅埋暗挖大断面隧道变形规律既有地下管线

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饱和软黄土隧道围岩注浆加固参数研究

铁道工程学报 2021年第1期38卷 60-65页

作者：张学进中铁一局集团有限公司西安710054

研究目的:饱和软黄土地层隧道围岩具有强度低、承载力差、抗变形能力弱等特性,因此对饱和软黄土地层隧道围岩注浆加固参数展开研究具有重要意义。依托西安地铁4号线火车站站暗挖西安火车站工程,进行室内黄土力学性能和现场注浆试验,研... 详细信息

研究目的:饱和软黄土地层隧道围岩具有强度低、承载力差、抗变形能力弱等特性,因此对饱和软黄土地层隧道围岩注浆加固参数展开研究具有重要意义。依托西安地铁4号线火车站站暗挖西安火车站工程,进行室内黄土力学性能和现场注浆试验,研究含水率对黄土强度特性的影响,分析黄土劈裂注浆浆液扩散的基本规律及劈裂机理,并总结现场隧道围岩注浆加固参数。研究结论:(1)饱和软黄土的含水率降低,其强度呈线性增长,因此注浆后降低了原位土体的渗透性能以及提升土体的黏聚力,整体上提升土体的抗剪强度;(2)黄土劈裂注浆浆液扩散的基本规律及劈裂机理:浆脉夹角近似120°,且高度不一致,长度有差别,在注浆压力逐渐增大的情况下,浆液在黄土体内会先后三次劈裂土体,形成劈裂缝并在其中进行扩散、填充,最终形成黄土劈裂注浆的"Y"型浆脉;(3)加固后的开挖面土体无侧限抗压强度达到0.6 MPa,周边土体加固区达到1.2 MPa,渗透系数≤10-6cm/s,含水率由原先的约30%下降至10%;(4)得出了在饱和软黄土地层中下穿火车站暗挖隧道WSS注浆所使用的配合比、注浆压力控制值、黄土地层下填充系数等参数,可为饱和软黄土地层隧道围岩注浆加固参数的精细化设计提供必要的参考依据。

关键词：饱和软黄土地层隧道围岩注浆加固参数试验研究

Ordovician integrative stratigraphy,biotas,and paleogeographical evolution of the Qinghai-Tibetan Plateau and its surrounding areas

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Science China Earth Sciences 2024年第4期67卷 971-1004页

作者： Xiang FANG Yong Yi ZHEN Guangxu WANG Xin WEI Zhongyang CHEN Yan LIANG xuejin WU Wenjie LI Chao LI Renbin ZHAN Yuandong zhang State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and PalaeontologyChinese Academy of SciencesNanjing 210008China Geological Survey of New South Wales W.B.Clarke Geoscience CentreNSW 2753Australia University of Chinese Academy of Sciences Beijing 100049China

The Ordovician rocks on the Qinghai-Tibetan Plateau represent the oldest non-metamorphic strata,and are critical to understanding the history of regional geology and biotic evolution of the entire *** of Floian,Darriwilian,Sandbian,Katian and Hirnantian are represented in the plateau with a hiatus of variable duration occurring underneath the basal Ordovician across the *** stratigraphical regions,including the Himalaya,Gangdise-Zayu,Qiangtang-Qamdo,Songpan-Garze,and Karakoram-Kunlun-Altun,are differentiated for the Ordovician strata,which are correlated with their equivalents in the Sibumasu,Indochina,Qaidam-Qilian,Tarim-Tianshan,and the Yangtze(western margin)stratigraphical *** the QinghaiTibetan Plateau,graptolites,conodonts,and cephalopods are the most common and useful fossils for the Ordovician *** Ordovician biotas of the Qinghai-Tibetan Plateau bear some distinguishable palaeobiogeographical signatures,among which the cephalopods are characterized by the flourishing actinocerids of North China affinity in the Early-Middle Ordovician,and by the thriving lituitids and orthocerids of South China affinity in the Middle-Late *** occurrences and their palaeobiogeographical evolution provide critical evidence bearing on the reconstruction of the geological history of the Qinghai-Tibetan Plateau and surrounding terranes in northeastern *** stratigraphical successions of the Cambrian-Ordovician transition in the Himalaya and Lhasa and nearby Sibumasu terranes were significantly affected by the Kurgiakh Orogeny,which resulted in the extensive unconformity between the Ordovician and the underlying rocks in most areas of the Qinghai-Tibetan *** southern Xizang,a warm-water biota of Middle Ordovician age was recovered from oolitic limestones,suggesting a likely palaeogeographical location in low-latitudes near the *** the Himalaya and Sibumasu regions,the Upper Ordovician was typified by t

关键词： Ordovician Chronostratigraphy Lithostratigraphy Biostratigraphy Palaeobiogeography Qinghai-Tibetan Plateau

Functional predictability of universal gene circuits in diverse microbial hosts

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Quantitative Biology 2024年第2期12卷 129-140页

作者： Chenrui Qin Tong Xu xuejin Zhao Yeqing Zong Haoqian M.zhang Chunbo Lou Qi Ouyang Long Qian Peking-Tsinghua Joint Center for Life Sciences Peking UniversityBeijingChina CAS Key Laboratory of Microbial Physiological and Metabolic Engineering Institute of MicrobiologyChinese Academy of SciencesBeijingChina Bluepha Co. LtdBeijingChina Center for Cell and Gene Circuit Design CAS Key Laboratory of Quantitative Engineering BiologyGuangdong Provincial Key Laboratory of Synthetic GenomicsShenzhen Key Laboratory of Synthetic GenomicsShenzhen Institute of Synthetic BiologyShenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhenChina Center for Quantitative Biology Academy for Advanced Interdisciplinary StudiesPeking UniversityBeijingChina

Although the principles of synthetic biology were initially established in model bacteria,microbial producers,extremophiles and gut microbes have now emerged as valuable prokaryotic chassis for biological *** the host range in which designed circuits can function reliably and predictably presents a major challenge for the concept of synthetic biology to *** this work,we systematically characterized the cross-species universality of two transcriptional regulatory modules—the T7 RNA polymerase activator module and the repressors module—in three non-model *** found striking linear relationships in circuit activities among different organisms for both *** model fitting revealed host non-specific parameters defining the universality of both ***,a genetic NOT gate and a band-pass filter circuit were constructed from these modules and tested in non-model *** models employing host non-specific parameters were successful in quantitatively predicting circuit behaviors,underscoring the potential of universal biological parts and predictive modeling in synthetic bioengineering.

关键词： circuit predictability host-independent genetic circuits host-nonspecific parameters parts characterization transcriptional regulatory modules

Early and Sensitive Detection of Pathogens for Public Health and Biosafety:An Example of Surveillance and Genotyping of SARS-CoV-2 in Sewage Water by Cas12a-Facilitated Portable Plasmonic Biosensor

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Research 2024年第2期2023卷 259-272页

作者： Tianzhong Li Yuzhi Chen Zhi Chen Yuan Hao Minyi Liang Yingxia Liu Guanyong Ou Huanian zhang Yuxuan Tang Yabing Hao Swelm Wageh Omar AAl-Hartomy Abul Kalam Bin zhang Xin Shi xuejin Li Han zhang College of Physics and Optoelectronic Engineering Institute of Translational MedicineDepartment of OtolaryngologyShenzhen Second People's HospitalFirst Affiliated Hospital of Shenzhen UniversityHealth Science CenterShenzhen UniversityShenzhen 518060China Shenzhen Key Laboratory of Sensor Technology Shenzhen 518060China The Sixth Affiliated Hospital of Guangzhou Medical University Qingyuan People's HospitalQingyuan 511518China Shenzhen Key Laboratory of Pathogen and Immunity National Clinical Research Center for Infectious DiseaseState Key Discipline of Infectious DiseaseShenzhen Third People's HospitalSecond Hospital Affiliated to Southern University of Science and TechnologyShenzhen 518112China School of Medicine Southern University of Science and TechnologyShenzhen 518055China School of Physics and Optoelectronic Engineering Shandong University of TechnologyZibo 255049China Department of Physics Faculty of ScienceKing Abdulaziz University Jeddah 21589Saudi Arabia Research Center for Advanced Materials Science(RCAMS) King Khalid UniversityP.0.Box 9004Abha 61413Saudi Arabia Department of Chemistry College of ScienceKing Khalid UniversityP.0.Box9004Abha 61413 Saudi Arabia Health Sciences Institute China Medical UniversityShenyang 110000China The Chinese University of Hong Kong Shenzhen 518060China

Infectious diseases severely threaten public health and global *** addition to transmission through the air,pathogenic microorganisms have also been detected in environmental liquid samples,such as sewage *** biochemical detection methodologies are time-consuming and cost-ineffective,and their detection limits hinder early *** the present study,ultrafine plasmonic fiber probes with a diameter of 125μm are fabricated for clustered regularly interspaced short palindromic repeats/CRISPR-associated protein(CRISPR/Cas)-12a-mediated sensing of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2).Single-stranded DNA exposed on the fiber surface is trans-cleaved by the Cas12a enzyme to release gold nanoparticles that are immobilized onto the fiber surface,causing a sharp reduction in the surface plasmon resonance(SPR)*** proposed fiber probe is virus-specific with the limit of detection of~2,300 copies/ml,and genomic copy numbers can be reflected as shifts in wavelengths.A total of 21 sewage water samples have been examined,and the data obtained are consistent with those of quantitative polymerase chain reaction(qPCR).In addition,the Omicron variant and its mutation sites have been fast detected using S gene-specific *** study provides an accurate and convenient approach for the real-time surveillance of microbial contamination in sewage water.

关键词： fiber consuming hinder