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产教融合背景下船舶通导检测工程师培养研究与实践

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武汉船舶职业技术学院学报 2024年第1期23卷 59-64页

作者：彭晓星贾爱鹏周美庆张一久浙江国际海运职业技术学院浙江舟山316021

为了最大限度地确保船舶航行安全,海事局对航行安全与无线电设备管理持续加强,通过产教融合机制解决当前通导检测人员极度短缺问题。从政校企合作机制、工作室育人平台、实践教学体系、师资队伍建设、工程文化育人等方面详细阐述了实现... 详细信息

为了最大限度地确保船舶航行安全,海事局对航行安全与无线电设备管理持续加强,通过产教融合机制解决当前通导检测人员极度短缺问题。从政校企合作机制、工作室育人平台、实践教学体系、师资队伍建设、工程文化育人等方面详细阐述了实现产教融合的工作机制与实施路径,以培养技能型、学习型、高素质工程师为宗旨,结合现代船舶通信导航发展趋势,为通信导航技术工程师培养改革提供借鉴和参考。

关键词：产教融合工程师培养通信导航

Some Notes on M-hyponormal Weighted Shifts and Hyponormalizable Weighted Shifts

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Chinese Quarterly Journal of Mathematics 2014年第3期29卷 419-425页

作者： GE Bin zhou qing-mei .Department of Mathematics Harbin Engineering University Harbin 150001 China Departmentof Library Northeast Forestry University Harbin 150040 China

Let {an}∞n=0be a weight sequence and let W denote the associated unilateral weighted shift on H. In this paper, we consider the connection between the M-hyponormal and hyponormalizable weighted shift operator. Main results are Theorems 4.1 and Theorems4.2. Theorem 4.1 gives the sufficient condition that a weighted shifts M-hyponormal operator is hyponormalizable. Theorem 4.2 gives the sufficient condition that a hyponormalizable weighted shift operator is M-hyponormal. Finally, invariant subspaces of such operators are discussed.

关键词： M-hyponorrnal unilateral weighted shifts spectral radius positive operator

Cosmological interpretation for the stochastic signal in pulsar timing arrays

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Science China(Physics,Mechanics & Astronomy) 2024年第4期67卷 43-50页

作者： Yu-mei Wu Zu-Cheng Chen qing-Guo Huang School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou 310024China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Department of Astronomy Beijing Normal UniversityBeijing 100875China Advanced Institute of Natural Sciences Beijing Normal UniversityZhuhai 519087China Department of Physics and Synergistic Innovation Center for Quantum Effects and Applications Hunan Normal UniversityChangsha 410081China CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China

The pulsar timing array(PTA)collaborations have recently reported compelling evidence for a stochastic signal consistent with a gravitational-wave *** this paper,we combine the latest data sets from NANOGrav,PPTA,and EPTA to explore cosmological interpretations for the PTA signal from first-order phase transitions,domain walls,and cosmic strings,*** find that the domain wall model is strongly disfavored with the Bayes factors compared with the first-order phase transitions and cosmic strings being 1/90 and 1/189,respectively,breaking the degeneracy among these models in individual data *** also find that:(1)a strong phase transition at temperatures below the electroweak scale is favored,and the bubble collisions make the dominant contribution to the energy density spectrum;(2)a small reconnection probability p<1.55×10^(-1)allowed by strings in(super)string theory is favored at the 95%confidence level,and ground-based detectors can further constrain the parameter space.

关键词： puslar timing arrays gravitational-wave background first-order phase transitions domain walls cosmic strings

Combined application of CIRCLE Software and Topo-LASIK for SMILE enhancement

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International Journal of Ophthalmology(English edition) 2024年第1期17卷 206-209页

作者： Bing-qing Sun Hai-Peng Xu Xing-Tao zhou mei-Yan Li Eye Institute and Department of Ophthalmology Eye&ENT HospitalFudan UniversityShanghai 200031China NHC Key Laboratory of Myopia(Fudan University) Key Laboratory of MyopiaChinese Academy of Medical SciencesShanghai 200031China Shanghai Research Center of Ophthalmology and Optometry Shanghai 200031China Shanghai Engineering Research Center of Laser and Autostereoscopic 3D for Vision Care Shanghai 200031China

Dear Editor,We present a case of combined application of CIRCLE software(Carl Zeiss Meditec AG,Germany)and topography-guided laser-assisted in situ keratomileusis(Topo-LASIK)for small-incision lenticule extraction(SMILE)*** is a safe,minimally invasive corneal laser surgery using a femtosecond laser to create an extractable stromal lenticule.

关键词： laser application Zeiss

Phosphorus-silicon-integrated electrolyte additive boosts cycling performance and safety of high-voltage lithium-ion batteries

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Chinese Chemical Letters 2024年第8期35卷 418-424页

作者： mei-Chen Liu qing-Song Liu Yi-zhou Quan Jia-Ling Yu Gang Wu Xiu-Li Wang Yu-Zhong Wang The Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials(MoE) National Engineering Laboratory of Eco-Friendly Polymeric Materials(Sichuan)State Key Laboratory of Polymer Materials EngineeringCollege of ChemistrySichuan UniversityChengdu 610064China

Safety and energy density are significant for lithium-ion batteries(LIBs),and the flammable organic elec-trolyte is one of the most critical causes of the safety problem of *** LiNi0.8 Co 0.1 Mn 0.1 O 2(NCM811)cathode with high capacity can improve the energy density,the interface stability between NCM811 cathode and electrolytes needs to be ***,we report a multifunctional additive,diethyl(2-(triethoxysilyl)ethyl)phosphonate(DETSP),which can suppress the flammability of the elec-trolyte and enhance the cycling stability of NCM811 cathode with a capacity retention of 89.9%after 400 cycles at 1 C,while that of the blank electrolyte is merely 61.3%.In addition,DETSP is compati-ble well with the graphite anode without impairing the electrochemical ***,the performance and safety of NCM811/graphite full cells are also *** and theoretical re-sults demonstrate that DETSP can scavenge acidic byproducts and is beneficial to form a stable cathode-electrolyte interface(CEI).Accordingly,DETSP can potentially be an effective solution to ameliorating the safety of the commercial electrolyte and improving the stability of high-voltage cathodes.

关键词： Electrolyte additive NCM Lithium-ion batteries Safety Cathode-electrolyte interface

Effects of iron oxide on crystallization behavior and spatial distribution of spinel in stainless steel slag

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International Journal of Minerals,Metallurgy and Materials 2024年第2期31卷 292-300页

作者： Zihang Yan qing Zhao Chengzhi Han Xiaohui mei Chengjun Liu Maofa Jiang Key Laboratory for Ecological Metallurgy of Multimetallic Mineral(Ministry of Education Northeastern UniversityShenyang 110819China School of Metallurgy Northeastern UniversityShenyang 110819China

Chromium plays a vital role in stainless steel due to its ability to improve the corrosion resistance of the ***,the re-lease of chromium from stainless steel slag(SSS)during SSS stockpiling causes detrimental environmental *** prevent chromium pollution,the effects of iron oxide on crystallization behavior and spatial distribution of spinel were investigated in this *** results revealed that FeO was more conducive to the growth of spinels compared with Fe2O3 and *** were found to be mainly distrib-uted at the top and bottom of *** amount of spinel phase at the bottom decreased with the increasing FeO content,while that at the top *** average particle size of spinel in the slag with 18wt%FeO content was 12.8μ***,no notable structural changes were observed with a further increase in FeO *** other words,the spatial distribution of spinel changed when the content of iron oxide varied in the range of 8wt%to 18wt%.Finally,less spinel was found at the bottom of slag with a FeO content of 23wt%.

关键词： stainless steel slag spinel chromium waste remediation ferrous oxide

Role of adaptation measures in addressing heatwave exposure in China

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Advances in Climate Change Research 2024年第1期15卷 148-157页

作者： Qin-mei HAN qing-Chen CHAO Shao SUN Pei-Jun SHI National Climate Centre China Meteorological AdministrationBeijing 100081China State Key Laboratoryof Severe Weather Chinese Academy of Meteorological Sciences Beijing 0o08lChina Faculty of Geographical Science Beijing Normal UniversityBeijing 100875China

Heatwave exposure has increased dramatically because of climate warming and population growth,along with their interactive ***,effective adaptation measures can reduce these ***,the dynamic changes,regional inequality in adaptive capacity and their potential contributions to reducing exposure in the future remain *** study quantifies the impact of adaptive capacity and underscores regional variations in heatwave magnitudes,population exposure and adaptation levels in *** projected the future adaptive capacity using air-conditioner penetration,factoring in climate cooling requirements and individuals'purchasing *** population and gross domestic product(GDP)data from four Shared Socioeconomic Pathways(SSP1,SSP2,SSP3 and SSP5)and daily temperature data from four SSP-based emission scenarios(SSP1-2.6,SSP2-4.5,SSP3-7.0 and SSP5-8.5),we estimated heatwave duration,population exposure and avoided impacts through adaptation across China and its *** show a substantial increase in heatwave duration in Southwest and Southern China,especially under the SSP5-8.5 scenario,with a projection of 163.2±36.7 d during *** the SSP3|SSP3-7.0 scenario,total exposure reaches 156.4±76.8 billion person d per year,which is the highest among all scenarios and 23 times greater than that in 1986-2005 without *** considering adaptation measures,a noteworthy reduction in population exposure is observed,especially in the SSP3|SSP3-7.0 and SSP5JSSP5-8.5 scenarios,with reductions of(62.6±3.9)%and(65.8±5.1)%,respectively,compared with the scenario without adaptation during *** regional disparities in avoided impacts are also evident,with variations of up to 50%across different *** implementation of effective and environmentally friendly adaptation measures can notably address climate change,thereby alleviating the profound threats posed to human well-being.

关键词： Heatwaves Population exposure Adaptation Future projection China

A Low Cost, Green Sustainable and Biodegradable Biomass-based Fluorine-free Water and Oil Repellent

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Chinese Journal of Polymer Science 2024年第4期42卷 480-491页

作者： Zhi-Wei Shen Shu-Feng Hu Chen Zeng Wei-qing Kong mei-Fang Zhu State Key Laboratory for Modification of Chemical Fibers&Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai201620China State Key Laboratory of Pulp and Paper Engineering School of Light Industry and EngineeringSouth China University of TechnologyGuangzhou510630China

With the global ban on plastics intensifying, the substitution of plastic with paper has garnered increasing attention. However, the inadequate water and oil repellency of pulp molding hinders its practical applications. Currently, the common method to enhance the oil and water repellency of pulp molding is by adding fluorinated water and oil repellents. Nevertheless, fluorinated compounds are environmentally and physiologically harmful. Therefore, the development of fluorine-free, water and oil repellent alternatives is crucial. In this study, chitosan and stearic acid were utilized as the first and second layers of the oil and water repellent coatings, respectively. The coated samples exhibited favorable water repellency, with a water contact angle of 116.4°, and excellent oil repellency, achieving a 12/12 rating on the kit scale. Importantly, the samples did not exhibit any leakage after being soaked in hot water and hot oil at 95±5℃ for 30 min, demonstrating remarkable performance as a barrier against hot water and oil. Moreover, the coated samples displayed outstanding mechanical properties, thermal stability, biodegradability, and recyclability. The approach presented in this study is simple, cost-effective, environmentally friendly, and represents a promising technique for producing fluoride-free, oil-and water-resistant pulp molding products.

关键词： Biomass Fluoride-free Oil-andwater-resistant Plasticfree

奥沙利铂联合希罗达治疗晚期及复发性胃癌的临床研究

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现代预防医学 2010年第22期37卷 4384-4385页

作者：周青美江西省赣州市人民医院老年病科

[目的]探讨奥沙利铂联合希罗达治疗晚期及复发性胃癌的临床疗效及副作用。[方法]选择晚期及复发性胃癌46例,d 1给予奥沙利铂130 mg/m2;d 1~14,口服希罗达化疗2 000 mg/m2,分两次服用,早、晚饭后半小时各1次。每3周为1周期,每位患者至少... 详细信息

[目的]探讨奥沙利铂联合希罗达治疗晚期及复发性胃癌的临床疗效及副作用。[方法]选择晚期及复发性胃癌46例,d 1给予奥沙利铂130 mg/m2;d 1~14,口服希罗达化疗2 000 mg/m2,分两次服用,早、晚饭后半小时各1次。每3周为1周期,每位患者至少接受两个周期的化疗。[结果]所有患者共完成178个周期化疗,平均3.87个周期(2~6)。化疗完成后,达到CR的有10例,达到PR的有19例,达到SD的有10例,达到PD的有7例,有效率为63.04%。中位生存期为13.2月,中位缓解期8.1个月。患者的毒副反应均较轻,不良反应主要为骨髓抑制、神经毒性、消化道反应及手足综合征。[结论]采用奥沙利铂联合希罗达的联合治疗方案治疗晚期及复发性胃癌具有良好的疗效,毒副反应轻,值得临床推广。

关键词：晚期及复发性胃癌奥沙利铂希罗达