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New methyl formate synthesis method:Coal to methyl formate

Journal of Energy Chemistry 2018年第1期27卷 238-242页

作者： lingyun rong Zhongning Xu Jing Sun Guocong Guo State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002FujianChina Key Laboratory of Coal to Ethylene Glycol and Its Related Technology Chinese Academy of SciencesFuzhou 350002FujianChina

Methyl formate is one of the most important intermediates in C1 chemistry, which has been employed in a wide range of industrial applications. Current synthesis methods for methyl formate mainly include esterification of methanol and formic acid, liquid-phase methanol carbonylation, oxidative dehydrogenation of methanol, one-step syngas synthesis, and carbon dioxide hydrogenation and condensation with methanol, Liquid-phase methanol carbonylation is currently a main commercially viable process devel- oped by BASF Corp, for the industrial production of methyl formate. Recently, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences has developed a new synthesis method to con- vert coal to methyl formate （denoted as CTMF）, Different from the liquid-phase methanol carbonylation using homogeneous catalysts, CTMF method features with vapor-phase methanol carbonylation using het- erogeneous nanocatalysts, which can effectively utilize the coal-based syngas and produce value-added fine chemicals （i.e., methyl formate）. The newly developed method not only provides a new methyl for- mate synthesis technology but also contributes to the development of strategies for synthesizing valuable chemicals from coal. In this review, we firstly provide introduction on the development of existing methyl formate synthesis methods and then highlight the research progress of CTMF method. Finally, a perspec- tive on the future of CTMF is given,

关键词： Methyl formate Coal to methyl formate Vapor-phase methanol carbonylation Nanocatalyst

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环形间断缝合术治疗前置胎盘剖宫产术中出血的效果研究

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系统医学 2021年第8期6卷 129-131页

作者：荣凌云牡丹区中心医院妇产科山东菏泽274000

目的分析前置胎盘剖宫产术中出血应用环形间断缝合术治疗的效果。方法选择该院2018年1月—2019年12月期间收入的前置胎盘剖宫产术中出血患者78例,根据患者具体情况进行分组,分为参照组(采纳“8”字缝合术治疗)和治疗组(采纳环形间断缝... 详细信息

目的分析前置胎盘剖宫产术中出血应用环形间断缝合术治疗的效果。方法选择该院2018年1月—2019年12月期间收入的前置胎盘剖宫产术中出血患者78例,根据患者具体情况进行分组,分为参照组(采纳“8”字缝合术治疗)和治疗组(采纳环形间断缝合术治疗),各39例,对比两组的治疗效果。结果就术中出血量、手术时间、输血量、止血时间以及住院时间等相关手术指标而言,治疗组均明显优于参照组,差异有统计学意义(t=8.574、7.365、6.321、6.982、7.361,P<0.05);就成功止血率、输血率和子宫切除率而言,治疗组均优于参照组,差异有统计学意义(P<0.05);就并发症发生率而言,观察组为7.69%,明显低于参照组的25.64%,差异有统计学意义(χ2=4.523,P<0.05)。结论前置胎盘剖宫产术中出血应用环形间断缝合术治疗的效果确切。

关键词：环形间断缝合术前置胎盘剖宫产术中出血

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Diagnostic Classification of Lung Cancer Using Deep Transfer Learning Technology and Multi-Omics Data

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Chinese Journal of Electronics 2021年第5期30卷 843-852页

作者： ZHU rong DAI lingyun LIU Jinxing GUO Ying School of Computer Science Qufu Normal University School of Automation Central South University

In recent years, with the increasing application of highthroughput sequencing technology,researchers have obtained and accumulated a large amount of multi-omics data, making it possible to diagnose cancer at the gene expression level. The proliferation of various omics data can provide a large amount of biological information, which brings new opportunities and great challenges as well to cancer classification and *** learning algorithms for early diagnosis of lung cancer have emerged that distinguish cancers of the early and late stages by using genomic features. Omics data are generally characterized with low sample size,high dimensionality and high noise. Therefore, simple direct application of common classification methods cannot achieve better performance and must be improved in a targeted manner. This paper puts forward a combined convolutional neural network and convolutional autoencoders approach to construct a deep migratory learning classification model for early lung cancer diagnosis. First,the convolutional auto-encoders algorithm is used to reduce the dimensionality of the dataset in order to make it better meet the requirements of migration ***, a neural network model is constructed with the original dataset and the existing labeled dataset, and the model migration rules are set as well. Finally, a small number of labeled target datasets are used in the training to complete the construction of the classification *** proposed convolutional neural network method based on model migration and five other popular machine learning models are used to classify and predict the three lung cancer gene datasets and the integrated *** experimental results show that such four evaluation metrics as accuracy, precision, recall, and f1-score with our proposed method have obtained better prediction performance, and the average area under curve result also shows our proposed method is optimal.

关键词： Image and video coding Image recognition X-ray techniques: radiography and computed tomography (biomedical imaging/measurement) Computer vision and image processing techniques X-rays and particle beams (medical uses) Biology and medical computing Machine learning (artificial intelligence) Neural nets Diagnostic classification Deep transfer learning Multiomics data Lung cancer

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旅游强国建设与旅游业高质量发展

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旅游学刊 2024年第7期39卷 16-27页

作者：宋瑞保继刚魏小安张凌云崔凤军陈荣严旭阳中国社会科学院旅游研究中心北京100006 中山大学旅游学院广东广州510275 世界旅游城市联合会北京100120 北京联合大学旅游学院北京100101 绍兴文理学院浙江绍兴312000 中国旅游集团中国香港999077

实现旅游业高质量发展是建设旅游强国的内在要求。文章围绕习近平总书记对旅游工作的重要指示,就新征程中如何认识旅游强国、如何实现旅游强国战略、如何落实习近平总书记重要指示、如何理解旅游业的新定位和新赛道、如何推动旅游业高... 详细信息

实现旅游业高质量发展是建设旅游强国的内在要求。文章围绕习近平总书记对旅游工作的重要指示,就新征程中如何认识旅游强国、如何实现旅游强国战略、如何落实习近平总书记重要指示、如何理解旅游业的新定位和新赛道、如何推动旅游业高质量发展、如何担负起旅游学术共同体的时代使命等重要议题进行了探讨。研究认为,应要特别关注如下议题:1)从新时代新征程出发,重新思考旅游强国的提出背景、底层逻辑、关注重点、产业定位、衡量指标和建设思路;2)实现旅游强国目标,需创新税制、优化旅游统计、培养高层次人才;3)以习近平总书记重要指示为纲,重点关注市场、产业、理念、统筹、体系等方面问题;4)在旅游业成为新兴的战略性支柱产业和具有显著时代特征的民生产业、幸福产业的背景下,疗愈旅游是符合旅游业新定位的一个新赛道;5)实现旅游业高质量发展,需以市场为导向、以人民满意为中心、以投入产出为旅游投资基本导向,需在空间维度和时间维度实现均衡发展和可持续发展;6)在旅游发展新征程上,学术共同体应承担重要职责和历史使命,及时回答时代之问,夯实科学探究学理之基。

关键词：旅游业旅游强国高质量发展旅游统计体系旅游学术共同体

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A General Linguistic Steganalysis Framework Using Multi-Task Learning

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Computer Systems Science & Engineering 2023年第8期46卷 2383-2399页

作者： lingyun Xiang rong Wang Yuhang Liu Yangfan Liu Lina Tan School of Computer and Communication Engineering Changsha University of Science and TechnologyChangsha410114China School of Computer Science and Electronic Engineering University of EssexColchesterCO43SQUK School of Computer Science Hunan University of Technology and BusinessChangsha410205China

Prevailing linguistic steganalysis approaches focus on learning sensitive features to distinguish a particular category of steganographic texts from non-steganographic texts,by performing binary *** it remains an unsolved problem and poses a significant threat to the security of cyberspace when various categories of non-steganographic or steganographic texts *** this paper,we propose a general linguistic steganalysis framework named LS-MTL,which introduces the idea of multi-task learning to deal with the classification of various categories of steganographic and non-steganographic ***-MTL captures sensitive linguistic features from multiple related linguistic steganalysis tasks and can concurrently handle diverse tasks with a constructed *** the proposed framework,convolutional neural networks(CNNs)are utilized as private base models to extract sensitive features for each steganalysis ***,a shared CNN is built to capture potential interaction information and share linguistic features among all ***,LS-MTL incorporates the private and shared sensitive features to identify the detected text as steganographic or *** results demonstrate that the proposed framework LS-MTL outperforms the baseline in the multi-category linguistic steganalysis task,while average Acc,Pre,and Rec are increased by 0.5%,1.4%,and 0.4%,*** ablation experimental results show that LS-MTL with the shared module has robust generalization capability and achieves good detection performance even in the case of spare data.

关键词： Linguistic steganalysis multi-task learning convolutional neural network(CNN) feature extraction detection performance

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轨道交通车辆内装材料中挥发性有机化合物测试方法的研究

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高速铁路新材料 2024年第3期3卷 20-23页

作者：荣幸于全蕾刁朔郭涛王凌云中车青岛四方车辆研究所有限公司山东青岛266031

轨道交通车辆内的空气污染主要来源于内装材料中释放出来的挥发性有机化合物(VOC),因此研究不同的VOC测试方法有利于更好地管控内装材料中的VOC,以改善车内的空气质量。结合轨道交通车辆用内装材料的特点,目前轨道交通行业采用加热失重... 详细信息

轨道交通车辆内的空气污染主要来源于内装材料中释放出来的挥发性有机化合物(VOC),因此研究不同的VOC测试方法有利于更好地管控内装材料中的VOC,以改善车内的空气质量。结合轨道交通车辆用内装材料的特点,目前轨道交通行业采用加热失重法和袋式法来测试内装材料中的VOC。为了探讨不同测试方法的差异,选取了6种典型的轨道交通车辆用内装材料为研究对象,采用加热失重法和袋式法分别测试这6种材料中释放的VOC。通过试验数据分析了这2种方法的特点、规律等,对比了这2种方法的区别。为研究轨道交通车辆内装材料中的VOC提供了理论依据,对根据需求选择方便快捷的测试方法具有指导意义。

关键词：轨道交通车辆内装材料挥发性有机化合物(VOC) 加热失重法袋式法

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Boosting the energy density of sulfide-based all-solid-state batteries at low temperatures by charging to high voltages up to 6 V

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Nano Research 2023年第8期16卷 10966-10975页

作者： Lun Zhang Xuedong Zhang Zhaoyu rong Tao Wang Zhenyu Wang Zaifa Wang Longchen Zhang Qiao Huang lingyun Zhu Liqiang Zhang Yongfu Tang Jianyu Huang Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education School of Materials Science and EngineeringXiangtan UniversityXiangtan 411105China Clean Nano Energy Center State Key Laboratory of Metastable Materials Science and TechnologyYanshan UniversityQinhuangdao 066004China Guilin Electrical Equipment Scientific Research Institute Co. LtdGuilin 541004China GRINM(Guangdong)Institute for Advanced Materials and Technology Foshan 528000China Hebei Key Laboratory of Applied Chemistry College of Environmental and Chemical EngineeringYanshan UniversityQinhuangdao 066004China School of Materials Science&Engineering Anhui UniversityHefei 230601China

Sulfide electrolyte-based all-solid-state batteries(ASSBs)are potential next generation energy storage technology due to the high ionic conductivity of sulfide electrolytes and potentially improved energy density and ***,the performance of ASSBs at/below subzero temperatures has not been explored ***,low temperature(LT)performance of LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(NCM811)|Li_(9.54)Si_(1.74)P_(1.44)S11.7Cl_(0.3)(LiSPSCl)|Li_(4)Ti_(5)O_(12)(LTO)ASSBs was *** charging the ASSB to 6 V at−40℃,a capacity of 100.7 mAh∙g^(−1)at 20 mA∙g^(−1)was achieved,which is much higher than that charged to 4.3 V(4.6 mAh∙g^(−1))at−40℃.Moreover,atomic resolution microscopy revealed that the NCM811 remained almost intact even after being charged to 6 *** contrast,NCM811 was entirely destructed when charged to 6 V at room *** sharp difference arises from the large internal charge transfer resistance at LT which requires high voltage to ***,such high voltage is not harmful to the active material but beneficial to extracting most energy out of the ASSBs at *** also demonstrated that thinner electrolyte is favorable for LT operation of ASSBs due to the reduced ion transfer *** work provides new strategies to boost the capacity and energy density of sulfide-based ASSBs at LT for dedicated LT applications.

关键词： all-solid-state lithium batteries sulfide solid electrolyte low temperature Li_(4)Ti_(5)O_(12)(LTO)

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Tailoring lithium concentration in alloy anodes for long cycling and high areal capacity in sulfide-based all solid-state batteries

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eScience 2023年第1期3卷 71-79页

作者： Zaifa Wang Jun Zhao Xuedong Zhang Zhaoyu rong Yongfu Tang Xinyu Liu lingyun Zhu Liqiang Zhang Jianyu Huang Clean Nano Energy Center State Key Laboratory of Metastable Materials Science and TechnologyYanshan UniversityQinhuangdao 066004China Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education School of Materials Science and EngineeringXiangtan UniversityXiangtanHunan 411105China Guilin Electrical Equipment Scientific Research Institute Co. LtdGuilin541004China Hebei Key Laboratory of Applied Chemistry College of Environmental and Chemical EngineeringYanshan UniversityQinhuangdao066004China School of Materials Science&Engineering Anhui UniversityHefei 230601PR China

Lithium–indium(Li-In)alloys are important anode materials for sulfide-based all-solid-state batteries(ASSBs),but how different Li concentrations in the alloy anodes impact the electrochemical performance of ASSBs remains *** paper systematically investigates the impact that different Li concentrations in Li-In anodes have on the performance of *** show that In with 1 wt%Li(LiIn-1)exhibits the best performance for ASSBs among all the tested Li-In *** essence,LiIn-1 not only provides sufficient Li to compensate for first-cycle capacity loss in the anode but also facilitates the formation of a LiIn alloy phase that has the best charge transfer kinetics among all the Li_(x) In alloy *** ASSB with a LiIn-1 anode and a LiNi_(0.8)Mn_(0.1)Co_(0.1)O_(2) cathode reached 3400 cycles at an initial capacity of 125 mAh/***,ASSBs with a high cathode active material(CAM)loading of 36 mg/cm 2 delivered a high areal capacity of 4.05 mAh/cm^(2) at high current density(4.8 mA/cm^(2)),with a capacity retention of 92% after 740 *** an ultra-high CAM loading of 55.3 mg/cm^(2),the ASSB achieved a stable areal capacity of 8.4 mAh/cm^(2) at current density of 1.7 mA/cm *** results bring us one step closer to the practical application of ASSBs.

关键词： All solid-state batteries Sulfide solid electrolyte Ni-rich cathode Li concentration

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物联网开放服务平台

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电信科学 2016年第2期32卷 120-125页

作者：荣浩江凌云南京邮电大学通信与信息工程学院江苏南京210003 江苏南邮物联网科技园有限公司江苏南京210003

针对目前物联网以垂直服务系统为主、缺乏跨系统的资源共享等问题,提出了一个可扩展的物联网智慧服务体系架构。在此基础上构建了统一的服务数据模型,通过消息发布中间件,屏蔽底层设备的数据结构、数据平台、操作系统等多源异构问题,加... 详细信息

针对目前物联网以垂直服务系统为主、缺乏跨系统的资源共享等问题,提出了一个可扩展的物联网智慧服务体系架构。在此基础上构建了统一的服务数据模型,通过消息发布中间件,屏蔽底层设备的数据结构、数据平台、操作系统等多源异构问题,加入认证授权机制,从而形成一个可扩展、可以接入各种服务、安全可靠的物联网智慧开放服务平台。最后设计了物联网开放服务平台的系统原型,通过实现具体的应用系统,验证了所提架构的可行性与优越性。

关键词：物联网服务平台数据模型中间件

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从纸介课程到电子课程:通向教育平等的路径?

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中国远程教育 2003年第1期 67-70页

作者：鲍嵘李凌云浙江师范大学教育科学学院厦门大学高教所

电子课程的出现,使得全球高等教育资源共享成为可能,同时改变了世界高等教育的格局。课程的电子化促发了人们对课程介质的思考。本文认为课程内容与课程传播媒介应该被看做一个整体;从纸介课程到电子课程是一个飞跃,但教育机会均等和教... 详细信息

电子课程的出现,使得全球高等教育资源共享成为可能,同时改变了世界高等教育的格局。课程的电子化促发了人们对课程介质的思考。本文认为课程内容与课程传播媒介应该被看做一个整体;从纸介课程到电子课程是一个飞跃,但教育机会均等和教学平等并不能自然而然地实现。

关键词：纸介课程电子课程教育平等高等教育资源共享

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