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肺表面活性物质治疗新生儿急性呼吸窘迫综合征的研究进展

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江汉大学学报（自然科学版） 2024年第1期52卷 72-79页

作者：王劲王丹(综述) 曾凌空(审校) 华中科技大学同济医学院附属武汉儿童医院(武汉市妇幼保健院)新生儿内科湖北武汉430016

新生儿急性呼吸窘迫综合征(nARDS)是新生儿期严重疾病之一,严重危害新生儿健康,其主要治疗手段包括呼吸机辅助通气、PS替代、抗感染及营养支持等。PS的替代治疗是新生儿急性呼吸窘迫综合征的独特治疗方式之一,PS的使用能显著改善患儿的... 详细信息

新生儿急性呼吸窘迫综合征(nARDS)是新生儿期严重疾病之一,严重危害新生儿健康,其主要治疗手段包括呼吸机辅助通气、PS替代、抗感染及营养支持等。PS的替代治疗是新生儿急性呼吸窘迫综合征的独特治疗方式之一,PS的使用能显著改善患儿的低氧血症和呼吸窘迫。本文就nARDS的治疗过程中,PS的种类、剂量、给药途径、给药时机、重复给药等方面作一综述。

关键词：肺表面活性物质急性呼吸窘迫综合征新生儿

跨文化群体国家认同教育研究现状及展望——以青少年阶段的港澳群体及移民为重点

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教育参考 2024年第4期 30-37,49页

作者：陈卓君李姗曾嘉欣华南师范大学教育科学学院广东广州510631 华南师范大学外国语言文化学院广东广州510631

文章通过梳理近20年国内外关于跨文化群体国家认同教育的相关研究,发现教育学视角下的研究方法虽各有侧重,但都基于历史与当代的文化冲突展开叙述,且能够基于多学科领域的理论,在政策引领下针对跨文化群体特性及地域特征,开展根植于课... 详细信息

文章通过梳理近20年国内外关于跨文化群体国家认同教育的相关研究,发现教育学视角下的研究方法虽各有侧重,但都基于历史与当代的文化冲突展开叙述,且能够基于多学科领域的理论,在政策引领下针对跨文化群体特性及地域特征,开展根植于课程、实践活动、师资培训及家庭社区四位一体的教育举措。结合我国国情,借鉴国外有益经验,提出未来我国跨文化群体国家认同教育研究应加强实证研究,关注以跨文化群体为对象的国家认同教育政策制定,重视国家认同教育系统融入跨文化群体学校教育,推进家校社相协调的跨文化群体国家认同教育环境建设等方面的研究。

关键词：国家认同教育跨文化群体港澳青少年

Cross-border Urban Networks Based on Manufacturing Global Value Chain:A Study of Listed Companies in Western China

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Chinese Geographical Science 2023年第6期33卷 1033-1052页

作者： MAN Shan YANG Yongchun zeng Tonggang WANG Meimei College of Earth and Environmental Sciences Lanzhou UniversityLanzhou730000China Key Laboratory of Western China’s Environmental Systems Ministry of Education of the People’s Republic of ChinaLanzhou UniversityLanzhou730000China

Cross-border investment is essential for western China’s *** value chain(GVC)forms cross-border investment networks between industries in western China and overseas *** on GVC,this study uses the social network analysis method,entropy method,multi-index comprehensive evaluation method,and quadratic assignment procedure analysis method to examine the characteristics and influencing factors of the urban networks of research and development(R&D),production,and sales formed as a result of the overseas investments of listed manufacturing companies in western *** showed that the three types of investment networks involved multiple industry types and multiple central cities with differentiated diversity and *** R&D urban network’s leading sub-industries were the mechanical equipment and instruments,medicine and biological products,and metal and nonmetal *** destination cities were mostly those home to educational and scientific research *** production urban network’s leading sub-industries were the mechanical equipment,instrument,and food and beverage *** destination cities were mostly regional central cities in developing *** sales urban network’s leading sub-industries were the mechanical equipment and instrument,metal and nonmetal,and petrochemical and plastics *** destination cities were numerous and *** addition,the R&D urban network easily formed specialized clusters,core nodes easily controlled the production urban network,and individual nodes did not easily control the sales urban *** and economic system advantages greatly impacted the three network *** the different influencing factors,this study suggests optimizing the institutional investment environment to narrow the institutional gap,adjusting and optimizing the investment layout to expand overseas markets,and increasing R&D funds to stimulate technological progress

关键词： manufacturing industry Global value chain(GVC) overseas investment cross-border networks western China

A serialized civil aircraft R&D cost estimation model considering commonality based on BP algorithm

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Chinese Journal of Aeronautics 2022年第4期35卷 253-265页

作者： Yongjie ZHANG Kang CAO Ke LIANG Yongqi zeng Wenjun DONG School of Aviation.Northwestern Polytechnical University Xi'an 710072China Shanghai Aircraft Design and Research Institute Shanghai 201210China

The common design of serial civil aircraft, an important strategy of modern civil aircraft research and develop-ment, minimizes the whole life cycle cost of civil aircraft through asset reuse and resource sharing. However, the existing estimating model for the R&D cost of civil aircraft ignores the effects of common design, so the value estimated by estimating derivative models is significantly inconsistent with the actual one. To solve this problem, a novel assessment method for civil aircraft commonality indicators is developed based on fuzzy set in the present study, exploiting the attributes and structural parameters of the aircraft to be assessed as input to determine the degree of membership that pertains to the commonality sub-interval as the commonality *** the BP(Back Propagation) neural network algorithm is adopted to establish the relationship between the common index and the decrease rate of the R&D cost of derivative models. The model employs over a dozen typical civil aircraft models(e.g., Boeing, Airbus, and Bombardier) as the sample data for network learning training to build a mature neural network model for estimating the R&D cost of novel derivative models. As revealed from the comparative analysis on the calculated results of the samples, the estimated results of the model given the effects of commonality in the present study exhibit higher estimation accuracy and value for future work.

关键词： BP algorithm Civil aircraft R&D cost Common indicators Fuzzy set Serialized civil aircraft

传统平原农区县域村镇聚落多维形态演变特征及定量归因——鲁西南单县实证

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中国农业资源与区划 2024年第4期45卷 103-115页

作者：王林田健曾坚艾合麦提·那麦提孙东琪天津大学建筑学院天津300072 中国科学院地理科学与资源研究所北京100101

[目的]对传统平原农区县域村镇聚落多维形态演变特征及驱动因素的测度,可为其有序合理重构提供科学依据。[方法]文章以鲁西南单县为例,运用典型指数统计、探索性空间分析、引力模型等方法,从点位、规模和结构3个维度识别1996—2021年单... 详细信息

[目的]对传统平原农区县域村镇聚落多维形态演变特征及驱动因素的测度,可为其有序合理重构提供科学依据。[方法]文章以鲁西南单县为例,运用典型指数统计、探索性空间分析、引力模型等方法,从点位、规模和结构3个维度识别1996—2021年单县村镇聚落空间格局演变特征及规律,并基于空间计量模型解析其影响因素。[结果](1)单县村镇聚落空间格局显现传统平原农区分散均质的典型特征且具有历史继承性,发展惰性普遍存在,始终未摆脱基层数量众多、县城超级极化、镇区较弱的不协调不稳定的等级结构状态。(2)单县村镇聚落多维形态特征演变存在显著的阶段特征。村镇聚落密度分区梯级递减,环城渐显核密度低值带;邻城热点区不断扩大,其他热点逐渐收缩于镇区周边;用地动态演变模式由“扩展面广、邻城消减”转向“广泛收缩、扩张集中”;由单核—放射状不均衡结构演变为单核多中心—强放射弱网络化结构,各乡镇趋向单中心空间结构模式。[结论]村镇聚落空间演变的主要驱动力及其作用方式、方向、强度和路径有所差异。应当建构协调有序的县域聚落等级体系,推进城镇村联动融合发展;加强政策规划导控作用,激发村镇聚落发展内生动力,实现以人为本的高品质发展。

关键词：村镇聚落多维形态特征空间演变定量归因传统平原农区鲁西南单县

Analysis of Patent Application Status of Scutellaria Barbata Industrial Chain Based on Patent Data

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Asian Journal of Social Pharmacy 2024年第1期19卷 89-97页

作者： zeng Yingying Liu Tong Liu Yue Song Aiwei Yuan Hongmei School of Business Administration Shenyang Pharmaceutical University2.Liaoning Institute for Drug ControlShenyang Shenyang 110016China

Objective To analyze patent application status of Scutellaria Barbata industrial chain and provide some suggestions for its patent application and product *** Patent data were collected through IncoPat patent analysis ***,the patent analysis method combined with text mining method was adopted to analyze the situation and development trend of patent application in China’s Scutellaria Barbata industrial chain by using pie chart,bubble chart,trend chart and other visual charts to display the *** and Conclusion The patent application of Scutellaria Barbata in China mainly experienced three stages:Slow development,rapid development,and recession *** number of patents is large,but the authorization rate is *** and enterprises are the main applicants for patent *** development is involved in the whole industrial chain,but it basically focuses on its efficacy in downstream drugs,health food and other ***,government should enhance the awareness of patent protection,encourage collaborative innovation in industry-university-research to promote the combination of basic research and market ***,it should provide theoretical support to tackle the problem of short board products,which can promote the transformation of scientific and technological achievements and contribute to the upgrading of Scutellaria Barbata industrial chain.

关键词： Scutellaria Barbata patent industrial chain

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黄脊竹蝗胚胎发育与卵滞育发生阶段

林业科学研究 2024年第1期37卷 203-210页

作者：王梅方曾红冯加德冯丹谢春华文亦芾陈鹏云南农业大学云南昆明650500 云南省林业和草原科学院云南昆明650201 勐腊县林业和草原局云南勐腊666399 昆明理工大学云南昆明650000

[目的]探明黄脊竹蝗的胚胎发育特征、历期和卵滞育的发生阶段。[方法]采用体式显微镜观察黄脊竹蝗不同发育阶段的胚胎形态和发育历期,并对不同发育阶段蝗卵的含水量和胚胎长度、触角长度、头幅大小进行测定。[结果]在25℃恒温条件下,黄... 详细信息

[目的]探明黄脊竹蝗的胚胎发育特征、历期和卵滞育的发生阶段。[方法]采用体式显微镜观察黄脊竹蝗不同发育阶段的胚胎形态和发育历期,并对不同发育阶段蝗卵的含水量和胚胎长度、触角长度、头幅大小进行测定。[结果]在25℃恒温条件下,黄脊竹蝗的胚胎发育分为10个阶段,产卵后第2—5 d为第I阶段,第6—9 d为第Ⅱ阶段,第10—16 d为第Ⅲ阶段,第17—24 d为第IV阶段,第25—32 d为第V阶段,第33—75 d为第VI阶段,第76—85 d为第VII阶段,第86—92 d为第Ⅷ阶段,第93—100 d为第Ⅸ阶段,第101—109 d为第X阶段。胚胎发育可分为4个发育时期:第Ⅰ阶段和第Ⅱ阶段为胚胎起始发育期,第Ⅲ阶段和第Ⅳ阶段为胚胎的快速发育期,第Ⅴ—Ⅶ阶段为缓慢发育期,第Ⅷ—Ⅹ阶段为恢复发育期。产卵后第45 d之后卵粒进入滞育发育,卵滞育发生在第VI阶段。[结论]本研究明确了黄脊竹蝗胚胎发育历期及卵滞育发生的胚胎发育阶段,为明晰黄脊竹蝗卵滞育机制提供了基础信息。

关键词：黄脊竹蝗胚胎发育发育历期卵滞育

Distributed Deep Reinforcement Learning-based Approach for Fast Preventive Control Considering Transient Stability Constraints

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CSEE Journal of Power and Energy Systems 2023年第1期9卷 197-208页

作者： Hongtai zeng Yanzhen Zhou Qinglai Guo Zhongmin Cai Hongbin Sun State Key Laboratory of Power Systems Department of Electrical EngineeringTsinghua UniversityBeijing 100084China Department of Automation Science and Technology Xi’an Jiaotong UniversityXi’an 710000China

Preventive transient stability control is an effective measure for the power system to withstand high-probability severe *** is mathematically an optimal power flow problem with transient stability *** to the constraints involved for differential algebraic equations of transient stability,it is difficult and time-consuming to solve this *** address these issues,this paper presents a novel deep reinforcement learning(DRL)framework for preventive transient stability control of power systems.A distributed deep deterministic policy gradient is utilized to train a DRL agent that can learn its control policy through massive interactions with a grid *** properly trained,the DRL agent can instantaneously provide effective strategies to adjust the system to a safe operating position with a near-optimal operational *** effectiveness of the proposed method is verified through numerical experiments conducted on a New England 39-bus system and NPCC 140-bus system.

关键词： Deep reinforcement learning preventive Control transient stability

Electrodeposited highly-oriented bismuth microparticles for efficient CO_(2)electroreduction into formate

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Nano Research 2022年第12期15卷 10078-10083页

作者： Chen Lin Yan Liu Xiangdong Kong Zhigang Geng Jie zeng University of Science and Technology of China Hefei230026China

Bi is one of the most fascinating catalysts for the formation of HCOO-towards CO_(2)***,we developed electrodeposited angular-shaped Bi microparticles(Bi MP)with exposed surfaces of{003}and{101}planes as efficient catalyst for the electroreduction of CO_(2)into HCOO-.During CO_(2)electroreduction,Bi MP achieved a Faraday efficiency(FE)for HCOO-of higher than 95%over a wide range of applied potential from-0.6 to-1.1 V versus reversible hydrogen electrode(***),whereas the FE for HCOO-of Bi nanoflakes(Bi NF)with exposed surfaces of{104}and{110}planes was around 70%.At-1.1 V ***,the partial current density for HCOO-of Bi MP was-271.7 mA·cm-2,1.56 times as high as that of Bi *** to kinetic analysis and mechanistic study,highly-oriented surface of Bi MP not only facilitated Faradaic process and accelerated reaction kinetics via enhancing the CO_(2)activation,but also restrained competing hydrogen evolution reaction,thus boosting catalytic performance of the electroreduction of CO_(2)into HCOO-.

关键词： electrodeposited Bi formate product highly-oriented bismuth surface CO_(2)electroreduction