期刊文献+
共找到531篇文章
< 1 2 27 >
每页显示 20 50 100
The miR164-TaNAC14 module regulates root development and abiotic-stress tolerance in wheat seedlings 被引量:6
1
作者 CHI Qing DU Lin-ying +6 位作者 MA Wen NIU Ruo-yu WU Bao-wei GUO Li-jian MA Meng LIU Xiang-li ZHAO Hui-xian 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2023年第4期981-998,共18页
Previous studies have revealed the miR164 family and the miR164-targeted NAC transcription factor genes in rice(Oryza sativa)and Arabidopsis that play versatile roles in developmental processes and stress responses.In... Previous studies have revealed the miR164 family and the miR164-targeted NAC transcription factor genes in rice(Oryza sativa)and Arabidopsis that play versatile roles in developmental processes and stress responses.In wheat(Triticum aestivum L.),we found nine genetic loci of tae-miR164(tae-MIR164 a to i)producing two mature sequences that downregulate the expression of three newly identified target genes of TaNACs(TaNAC1,TaNAC11,and TaNAC14)by the cleavage of the respective mRNAs.Overexpression of tae-miR164 or one of its target genes(TaNAC14)demonstrated that the miR164-TaNAC14 module greatly affects root growth and development and stress(drought and salinity)tolerance in wheat seedlings,and TaNAC14 promotes root growth and development in wheat seedlings and enhances drought tolerance,while tae-miR164 inhibits root development and reduces drought and salinity tolerance by downregulating the expression of TaNAC14.These findings identify the miR164-TaNAC14 module as well as other taemiR164-regulated genes which can serve as new genetic resources for stress-resistance wheat breeding. 展开更多
关键词 Triticum aestivum L. tae-miR164 miR164-targeted TaNACs miR164-TaNAC14 module growth and development abiotic-stress tolerance
在线阅读 下载PDF
RECENT DEVELOPMENTS OF DIRECT BONDED COPPER(DBC)SUBSTRATES FOR POWER MODULES 被引量:1
2
作者 Dr.JuergenSchulz-Harder Dr.KarlExel curamik 《电力电子》 2003年第5期42-47,共6页
DBC substrates are the standard circuit boardsfor power modules. Using the DBC technologythick copper foils (0.125mm - 0.Tmm) arecladded to Alumina or Aluminum Nitride,The strong adhesion of the copper to ceramicbond ... DBC substrates are the standard circuit boardsfor power modules. Using the DBC technologythick copper foils (0.125mm - 0.Tmm) arecladded to Alumina or Aluminum Nitride,The strong adhesion of the copper to ceramicbond reduces the thermal expansion coefficientin horizontal direction only slightly above theTEC of the ceramic itself. This allows directsilicon attach of large dies without using TECcontrolling layers.As DBC technology is using copper foils,integralleads overhanging the ceramic can be realized... 展开更多
关键词 DBC)SUBSTRATES FOR POWER moduleS of or on with as RECENT developmentS OF DIRECT BONDED COPPER AIN
在线阅读 下载PDF
Maritime Platform Facilities POB Plan Management Module Research and Development
3
作者 Xiaojiao Tong 《Open Journal of Applied Sciences》 CAS 2022年第11期1892-1897,共6页
There are many access ends and information asymmetry in the management of offshore platform production facility personnel information. In the actual business, the problem is decomposed and a multi-layer logical archit... There are many access ends and information asymmetry in the management of offshore platform production facility personnel information. In the actual business, the problem is decomposed and a multi-layer logical architecture is selected to design and develop the POB plan management module applicable to offshore platform facilities. The main functions of this module include task management, facility management, area management, sea-going unit management, plan management, report management, authority control, and comprehensive query. It can efficiently solve on-site business problems and improve the efficiency of POB plan management for various professionals on land and at sea. In actual use, the module can well assist in completing POB plan management tasks and improve work efficiency. 展开更多
关键词 Maritime Platform Facilities POB Management module Research and development Layered Architecture
在线阅读 下载PDF
Simultaneous degradation of sulfadiazine and dissolved organic matter based on low-impact development facilities 被引量:3
4
作者 Donghai Yuan Siyu Xiong +3 位作者 Chenling Yan Linxiao Zhai Yanqi Cui Yingying Kou 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2023年第8期223-233,共11页
Sulfadiazine(SD)is a common antibiotic administered to treat bacterial infections in livestock,and its fate andmigration are greatly affected by dissolved organicmatter(DOM).The soil infiltration system[a typical low-... Sulfadiazine(SD)is a common antibiotic administered to treat bacterial infections in livestock,and its fate andmigration are greatly affected by dissolved organicmatter(DOM).The soil infiltration system[a typical low-impact development(LID)facility]can significantly alterDOMproperties during runoff pollution,thus affecting the complexation of SDwithDOM.Here,the binding characteristics of different DOM components and SD in the soil infiltration system were explored using spectroscopic techniques(excitation–emission matrices,parallel factor analysis,and synchronous fluorescence spectroscopy).Combined with the weakening of DOM fluorescence intensity and 78.63%reduction in mean SD concentration following treatment,synchronous degradation may have occurred.The binding sequence of SD and DOM fluorophores was further explored using two-dimensional correlation spectroscopy.Effluent DOM showed greater sensitivity to SD and more binding sites than influent DOM.Moreover,hydrophobic protein-like substances exhibited higher log K_(M) values than other fluorescent components,indicating that protein-like components play significant roles in SD complexation.The soil percolation system improved the complexation stability and binding sequence of fulvic-like substances.Thus,SD–DOM can be intercepted and degraded using LID facilities to reduce the risk of SD in aquatic environments. 展开更多
关键词 Sulfadiazine(SD) low-impact development(LID) Agricultural non-point sources Dissolved organic matter (DOM) Parallel factor analysis(PARAFAC)
原文传递
Impact of Low-Impact Development Technologies from an Ecological Perspective in Different Residential Zones of the City of Atlanta, Georgia 被引量:2
5
作者 Zackery B. Morris Stephen M. Malone +2 位作者 Abigail R. Cohen Marc J. Weissburg Bert Bras 《Engineering》 2018年第2期30-35,共6页
Low-impact development (LID) technologies have a great potential to reduce water usage and stormwa- ter runoff and are therefore seen as sustainable improvements that can be made to traditional water infrastructure,... Low-impact development (LID) technologies have a great potential to reduce water usage and stormwa- ter runoff and are therefore seen as sustainable improvements that can be made to traditional water infrastructure, These technologies include bioretention areas, rainwater capturing, and xeriscaping, all of which can be used in residential zones, Within the City of Atlanta, residential water usage accounts for 53% of the total water consumption; therefore, residential zones offer significant impact potential for the implementation of LID, This study analyzes the use of LID strategies within the different residen- tial zones of the City of Atlanta from an ecological perspective by drawing analogies to natural ecosys- tems, The analysis shows that these technologies, especially with the addition of a graywater system, work to improve the conventional residential water network based upon these ecological metrics, The higher metric values suggest greater parity with healthy, natural ecosystems. 展开更多
关键词 low-impact development Ecological network analysis Residential water consumption
在线阅读 下载PDF
Instructional Modules for Constructivist Environmental Learning in Science,Technology and Society(STS)Subject
6
作者 Randy M.Ayong 《Journal of Environmental & Earth Sciences》 2025年第4期126-137,共12页
Modules enable students to engage with content at their own pace,fostering autonomy and deeper understanding.The modular approach ensures clarity in presenting objectives,instructions,and concepts,while having illustr... Modules enable students to engage with content at their own pace,fostering autonomy and deeper understanding.The modular approach ensures clarity in presenting objectives,instructions,and concepts,while having illustrations,activities,and assessments could enhance comprehension and retention.This paper was a developmental study on STS module for college students using the ADDIE Model(Analysis,Design,Development,Implementation,and Evaluation).Sampled 673 first-year students from Northwest Samar State University participated in the study,with 299 participating in a test try-out and 374 in the students’performance evaluation.Three expert evaluators with backgrounds in science,English,and psychology,each with over four years of experience,assessed the modules to ensure alignment with the study’s constructivist learning goals and instructional integrity.The findings revealed that both students and experts had rated the instructional module positively,indicating its effectiveness in facilitating learning and completing lessons.Key aspects such as the style of illustrations and written expressions,the usefulness of learning activities,and the guidance provided by illustrations and captions were especially well-received.The module was praised for its clear objectives,understandable instructions,and engaging tasks like trivia and puzzles.Expert evaluations highlighted relevance,simplicity,and balanced emphasis on topics in the module content.Furthermore,students in test group demonstrated significant improvement in performance,with post-test scores notably higher than pre-test scores,confirming the module’s effectiveness in enhancing learning outcomes.Consequently,this paper provides an opportunity to integrate science learning with initiatives aimed at promoting environmental preservation and driving social change. 展开更多
关键词 Instructional module Environmental Topics Higher Education Curriculum development Environmental Education
在线阅读 下载PDF
The Effect of Four Abiotic Factors on Macro-Anatomical Markers Development in <i>Parkia biglobosa</i>, Jack, R. Br., 1830 (Fabaceae) Crown 被引量:1
7
作者 Beda Innocent Adji Doffou Sélastique Akaffou +3 位作者 Kouadio Henri Kouassi Yao Patrice Houphouet Jerôme Duminil Sylvie Sabatier 《American Journal of Plant Sciences》 2021年第4期645-661,共17页
Interpretation of primary growth markers (modules) is neglected in sustainable resource management processes, yet it opens up prospects for long time series on tree crown development, necessary for their characterizat... Interpretation of primary growth markers (modules) is neglected in sustainable resource management processes, yet it opens up prospects for long time series on tree crown development, necessary for their characterization in the current context of climate change. This study aimed to assess the morphological variation of crown shoots in <i><span style="font-family:Verdana;">Parkia biglobosa</span></i><span style="font-family:Verdana;"> in the face of a changing environment. Axis growth modules of 420 individuals of different ages were retrospectively analyzed in the presence or absence of shading during the wet and dry seasons in seven localities in Cote d’Ivoire. The results showed that the developmental environment of individuals did not influence the growth modules dimensions (P > 0.05). However, module size remained significantly different between locations (P < 0.05). The southern part of the gradient is still favourable and has priority for the establishment of permanent plots. The modules morphology differs from the youngest to the oldest individuals (P < 0.05). The rainy season remains the ideal period for the implementation of agroforestry reforestation programmes based on this species (P < 0.05). </span><i><span style="font-family:Verdana;">Parkia biglobosa</span></i><span style="font-family:Verdana;"> is a monochasial sympod (Pseudo-monopod) with a relay axis that follows the Paul Champagnat architectural model in the young stage, and transits to the Wilhelm Troll model later in the adult and old stage. This information contributes to the understanding of the functioning of crown and the adaptation of this species to a varying environment. It could guide choice of suitable environment and ideal genotype for the implementation of a reforestation or agroforestry programme based on </span><i><span style="font-family:Verdana;">Parkia biglobosa</span></i><span style="font-family:Verdana;">.</span> 展开更多
关键词 Parkia biglobosa Environment development Growth modules CROWN
在线阅读 下载PDF
Multifaceted role of haptoglobin:Implications for disease development 被引量:1
8
作者 Chun-Han Cheng Wen-Rui Hao Tzu-Hurng Cheng 《World Journal of Hematology》 2024年第3期1-6,共6页
Haptoglobin,a protein primarily recognized for its role in sequestering free hemoglobin,has been identified as a molecule with diverse and underexplored functions in the pathophysiology of various diseases.This editor... Haptoglobin,a protein primarily recognized for its role in sequestering free hemoglobin,has been identified as a molecule with diverse and underexplored functions in the pathophysiology of various diseases.This editorial explores the multifaceted roles of haptoglobin,highlighting its involvement in inflammatory responses and immune regulation and its potential implications in chronic diseases such as diabetes,cardiovascular disorders,and cancer.Through a synthesis of recent research findings,this editorial reveals the importance of haptoglobin in disease mechanisms and underscores the need for further investigation to fully elucidate its therapeutic potential.A comprehensive understanding of haptoglobin’s novel functions may catalyze the development of innovative diagnostic and therapeutic modalities in clinical practice. 展开更多
关键词 HAPTOGLOBIN Disease development INFLAMMATION Immune modulation Therapeutic potential
暂未订购
Linux-based Platform for Open Architecture Controller and Its Modular Developing Method
9
作者 迟永琳 王宇晗 +1 位作者 吴祖育 蔡建国 《Journal of Donghua University(English Edition)》 EI CAS 2003年第2期107-111,共5页
Linux-based Platform for Open Architecture Controller ( POAC ), a new open architecture controller and its modular developing method are discussed. POAC divides the application software of controller into the developi... Linux-based Platform for Open Architecture Controller ( POAC ), a new open architecture controller and its modular developing method are discussed. POAC divides the application software of controller into the developing system and the application system. In the developing system, PAOC abstracts a series of function modules with unified data interface and function interface. In the application system, POAC defines the model of the architecture module, realizing the interoperability and interchangeability between the architecture modules. The modular developing method entities the users to make up an application system with some architecture modules, which consist of a set of function modules. The modular developing method decreases the developing time from the standard of controller architecture to the product. 展开更多
关键词 Open architecture controller Function module Architecture modules modular developing method
在线阅读 下载PDF
Design of Dismantling and Recycling Equipment for Junction Boxes of Waste Crystal Silicon Photovoltaic Modules
10
作者 Zhansheng ZHANG Yunfeng MA +3 位作者 Lu ZHENG Litong NIU Yi ZHANG Fei ZHENG 《Meteorological and Environmental Research》 CAS 2022年第5期68-72,共5页
The dismantling and recycling of junction boxes,which is an important part of the photovoltaic module recycling process,was tested and designed scientifically.The equipment framework was built by three-dimensional sim... The dismantling and recycling of junction boxes,which is an important part of the photovoltaic module recycling process,was tested and designed scientifically.The equipment framework was built by three-dimensional simulation,and then the design of dismantling and recycling equipment for junction boxes of waste crystal silicon photovoltaic modules was completed through the experimental test and data analysis.The experimental results show that the initial idea of the dismantling scheme is correct,and the structure is feasible.However,some problems were not considered.This study provides reliable data support for the subsequent equipment development and ensures the smooth development of the subsequent design work. 展开更多
关键词 Waste photovoltaic modules RECYCLING Junction box dismantling Three-dimensional simulation Equipment development
在线阅读 下载PDF
A novel regulatory module coordinates endosperm starch synthesis,grain development,and yield potential in cereals
11
作者 Bin Ma Xiubiao Cao +2 位作者 Qi-qi Zhang Changquan Zhang Qiaoquan Liu 《Molecular Plant》 2025年第9期1433-1435,共3页
Enhancing crop productivity and quality remains a paramount breeding objective to address the dual challenges of global population growth and escalating demand.Cereal endosperms,particularly in staple crops such as ri... Enhancing crop productivity and quality remains a paramount breeding objective to address the dual challenges of global population growth and escalating demand.Cereal endosperms,particularly in staple crops such as rice,wheat,and maize,constitute the world's primary source of human nutrition and animal feed. 展开更多
关键词 animal feed human nutrition regulatory module staple crops cereal breeding yield potential grain development enhancing crop productivity quality
原文传递
PbrWRKY62-PbrADC1 module involves in superficial scald development of Pyrus bretschneideri Rehd.fruit via regulating putrescine biosynthesis
12
作者 Xu Zhang Lijuan Zhu +10 位作者 Ming Qian Li Jiang Peng Gu Luting Jia Chunlu Qian Weiqi Luo Min Ma Zhangfei Wu Xin Qiao Libin Wang Shaoling Zhang 《Molecular Horticulture》 2024年第1期491-507,共17页
Putrescine plays a role in superficial scald development during the cold storage of pear fruit.However,the molecular mechanism behind this phenomenon has not been un-fully clarified until recently.In this study,a conj... Putrescine plays a role in superficial scald development during the cold storage of pear fruit.However,the molecular mechanism behind this phenomenon has not been un-fully clarified until recently.In this study,a conjoint analysis of metabolites and gene expression profiles in the putrescine-metabolic pathway of P.bretschneideri Rehd.fruit followed by experimental validation revealed that PbrADC1,forming a homodimer in the chloroplast,was involved in putrescine biosynthesis and thus fruit chilling resistance.Additionally,the substrate-binding residue Cys^(546)in PbrADC1,whose activity was modified by H_(2)O_(2),played a crucial role in arginine decarboxylation into agmatine.Through a combined analysis of the distribution of cis-acting elements in the PbrADC1 promoter as well as the expression profiles of related transcription factors(TFs),several TFs were identified as upstream regulators of PbrADC1 gene.Further investigation revealed that the nuclear PbrWRKY62 could directly bind to the W-box elements in the PbrADC1 promoter,activate its expression,enhance putrescine accumulation,and thus increase fruit chilling tolerance.In conclusion,our results suggest that the PbrWRKY62-PbrADC1 module is involved in the development of superficial scald in P.bretschneideri Rehd.fruit via regulating putrescine biosynthesis.Consequently,these findings could serve as valuable genetic resources for breeding scald-resistant pear fruit. 展开更多
关键词 P.bretschneideri Rehd. Superficial scald development Putrescine biosynthesis PbrWRKY62-PbrADC1 module Gene expression Metabolomics
在线阅读 下载PDF
基于I_CBAM-DenseNet模型的小麦发育期识别研究 被引量:1
13
作者 付景枝 马悦 +4 位作者 宏观 刘云平 吴文宇 丁明明 尹泽凡 《南京信息工程大学学报》 北大核心 2025年第1期42-52,共11页
针对我国农作物发育期人工观测效率低、识别准确率不高等问题,提出一种基于I_CBAM-DenseNet模型的小麦发育期识别方法.该方法以密集连接卷积网络(DenseNet)为主干提取网络,融入卷积块注意模块CBAM.先将CBAM中的空间注意力模块(SAM)与通... 针对我国农作物发育期人工观测效率低、识别准确率不高等问题,提出一种基于I_CBAM-DenseNet模型的小麦发育期识别方法.该方法以密集连接卷积网络(DenseNet)为主干提取网络,融入卷积块注意模块CBAM.先将CBAM中的空间注意力模块(SAM)与通道注意力模块(CAM)由传统的串联连接改为并行连接,并将改进的CBAM(I_CBAM)插入到DenseNet最后一个密集网络中,构建一种I_CBAM-DenseNet模型,再选取小麦7个重要发育时期进行自动识别.为最大化提取小麦的特征信息,将超绿特征(ExG)因子和最大类间方差法(Otsu)相结合对采集到的小麦图像进行分割处理.对比分析了I_CBAM-DenseNet、AlexNet、ResNet、DenseNet、CBAM-DenseNet以及VGG等模型的准确率和损失值的变化.结果表明,采取基于I_CBAM-DenseNet的卷积神经网络建立的模型,准确率达到99.64%,高于对比模型. 展开更多
关键词 小麦 发育期 DenseNet 卷积块注意模块(CBAM)
在线阅读 下载PDF
光伏组件用复合材料边框的应用现状及发展前景分析
14
作者 张翠妙 孟占广 +2 位作者 毛雅赛 王文杰 程文亭 《太阳能》 2025年第11期16-25,共10页
针对光伏组件用复合材料边框,首先从各个角度阐述了其应用契机;其次,总结了此类边框的性能特点、产品方案及技术难点;然后对此类边框相关的专利进行了归纳整理,并分析了此类边框认证、推广及应用情况;最后对其未来发展前景进行了展望。... 针对光伏组件用复合材料边框,首先从各个角度阐述了其应用契机;其次,总结了此类边框的性能特点、产品方案及技术难点;然后对此类边框相关的专利进行了归纳整理,并分析了此类边框认证、推广及应用情况;最后对其未来发展前景进行了展望。分析结果表明:1)中国排名前3的复合材料边框专利申请地区分别为江苏省、浙江省和上海市,其中,江苏省和浙江省遥遥领先,这与复合材料边框制造企业所在地区的分布吻合,主要集中在江浙一带。2)复合材料边框的专利类别主要为发明专利和实用新型专利,外观设计专利较少。其中,发明专利数量大于实用新型专利数量。3)复合材料边框凭借其优于铝合金边框的特性,今后将在光伏行业占据举足轻重的地位。但光伏组件达到使用年限后,由于复合材料边框退役后基本无再利用的价值且面临环保问题,如何实现此类边框的绿色制造成为光伏行业重要的研究课题。 展开更多
关键词 光伏组件 复合材料边框 铝合金边框 认证 应用现状 发明专利 发展前景
在线阅读 下载PDF
全球退役光伏组件回收研究热点、演化趋势与展望 被引量:6
15
作者 钟洪麟 李丁丁 +4 位作者 刘茜 严萌 姜璐 王晨 王赛鸽 《生态学报》 北大核心 2025年第9期4079-4106,共28页
为实现全球碳减排与温控目标,以光伏为主的清洁能源产业发展迅速。然而即将迎来的光伏组件大规模集中退役与处置已成为其产业可持续发展的重要问题。全球退役光伏组件回收也逐渐成为新能源发展领域的焦点。基于大量文献调研,从光伏组件... 为实现全球碳减排与温控目标,以光伏为主的清洁能源产业发展迅速。然而即将迎来的光伏组件大规模集中退役与处置已成为其产业可持续发展的重要问题。全球退役光伏组件回收也逐渐成为新能源发展领域的焦点。基于大量文献调研,从光伏组件回收技术、影响评估和管理策略三个维度对光伏回收产业的研究现状与发展趋势进行了深入剖析,具体包括:(1)梳理了光伏组件回收处理技术和管理体系的现状,识别了潜在问题和未来发展趋势;(2)总结了光伏组件回收潜在的污染物排放、生态环境影响及再利用带来的社会经济-生态环境效益等方面的相关研究进展;(3)提出了退役光伏组件回收体系构建、策略设计、合规发展等方面的研究进展和问题,为未来研究方向和产业可持续发展提供了策略建议。本研究对于从全生命周期视角统筹管理光伏产业链、制定未来循环再利用产业发展路径规划以及相关标准与政策等具有重要的参考价值,有助于促进光伏产业的可持续发展和资源循环再利用。 展开更多
关键词 退役光伏组件回收 回收技术 综合评估 政策设计 产业发展与管理 可持续发展
在线阅读 下载PDF
废墟作业现场多源信息采集监测系统设计与实现 被引量:1
16
作者 赵文强 寇建新 +4 位作者 谢鹏 朱笑然 高杨 于敬泽 倪景玉 《中国应急救援》 2025年第2期30-34,共5页
针对地震灾害导致的建(构)筑物倒塌的救援场景特点,结合救援队员在废墟环境下人身安全保障的实际需求,研制了一套便携式、快速部署、操作简单、低成本的废墟作业现场信息采集监测系统。基于LoRa无线通信模块实现多源传感器数据传输,利... 针对地震灾害导致的建(构)筑物倒塌的救援场景特点,结合救援队员在废墟环境下人身安全保障的实际需求,研制了一套便携式、快速部署、操作简单、低成本的废墟作业现场信息采集监测系统。基于LoRa无线通信模块实现多源传感器数据传输,利用光纤网络,采用软硬件结合以及现代模块化开发方法,实现了视频传输、传感器数据采集及传输、多路数据同步、数据显示等功能。最后,在国家地震紧急救援训练基地废墟训练场地进行了现场试验,验证了本系统的可行性。 展开更多
关键词 地震救援 通信模块 多源信息采集 系统研发
在线阅读 下载PDF
中国光伏产业组件退役规模测算模型 被引量:3
17
作者 白桦林 王青 江华 《太阳能学报》 北大核心 2025年第3期435-444,共10页
以中国光伏产业退役组件为研究对象,针对行业内现有退役组件功率容量及质量规模预测对中国光伏产业的针对性与及时性有所不足的问题,充分考虑运行期间组件更换、不同年份组件更换率、电站容配比等产业实际情况,对电站端、制造端、建设... 以中国光伏产业退役组件为研究对象,针对行业内现有退役组件功率容量及质量规模预测对中国光伏产业的针对性与及时性有所不足的问题,充分考虑运行期间组件更换、不同年份组件更换率、电站容配比等产业实际情况,对电站端、制造端、建设端来源的退役组件容量及质量规模进行综合的建模分析,并分析建议模型后续优化方向如电站技改、组件回收与再利用的区分等。研究结果表明,2030年前中国光伏组件退役规模整体较少,在2030年,预计累计组件退役量约35万t,除电站组件退役外,制造过程中组件报废及施工过程中组件报废也为组件退役的重要来源;2035年以后光伏组件退役量开始爆发式增长,2035年及2050年累计组件退役量分别约合113、7423万t。组件回收企业未来需要结合退役组件规模增长速度、政策、技术发展情况等,在不同发展阶段合理规划发展重点,探索适配产业发展的商业模式。 展开更多
关键词 光伏组件 回收 市场研究 预测模型 可持续发展
原文传递
基于LabVIEW的磁铁电源控制模块设计
18
作者 陈一飞 邓超 +2 位作者 周梁缘 张海燕 王电令 《核电子学与探测技术》 北大核心 2025年第7期980-987,共8页
国内加速器磁铁电源控制模块的开发基本上以Verilog语言和VHDL语言为主,采用顺序文本代码,对语法的要求高,开发周期较长。本文采用NI(National Instruments)公司的LabVIEW FPGA开发工具包,以FPGA为控制部件,设计了一套基于LabVIEW的磁... 国内加速器磁铁电源控制模块的开发基本上以Verilog语言和VHDL语言为主,采用顺序文本代码,对语法的要求高,开发周期较长。本文采用NI(National Instruments)公司的LabVIEW FPGA开发工具包,以FPGA为控制部件,设计了一套基于LabVIEW的磁铁电源控制模块。该模块利用Lab VIEW图形化软件编程,通过调用LabVIEW FPGA工具包中封装的函数来调用底层的Verilog代码,可以直观地体现FPGA编程的并行、数据流设计方法,减轻实际数字设计的负担,从而缩短开发周期。该模块在模拟负载上完成开发和验证,证明了用LabVIEW开发磁铁电源控制模块的可行性。 展开更多
关键词 LABVIEW FPGA 磁铁电源控制模块 嵌入式开发
在线阅读 下载PDF
SOX5:从发育到多系统疾病调控的核心转录因子
19
作者 胡广璇 杨旸 +3 位作者 郭金仕 栗晓颖 常波 衣雪洁 《生理学报》 北大核心 2025年第6期1009-1022,共14页
SOX5作为SOX转录因子家族重要成员,广泛参与多种生理和病理过程。SOX5通过其HMG-box DNA结合域与特定DNA序列相互作用,调控细胞分化、增殖和发育过程中的关键基因表达。SOX5在软骨发育中扮演重要角色;在神经系统发育中对神经元的迁移和... SOX5作为SOX转录因子家族重要成员,广泛参与多种生理和病理过程。SOX5通过其HMG-box DNA结合域与特定DNA序列相互作用,调控细胞分化、增殖和发育过程中的关键基因表达。SOX5在软骨发育中扮演重要角色;在神经系统发育中对神经元的迁移和分化具有关键调节作用;在生殖系统中,影响性腺发育和精子形成。在疾病方面,SOX5的缺陷与Lamb-Shaffer综合征、2型糖尿病和呼吸系统疾病密切相关。此外,在癌症进展中,SOX5通过调控多种信号通路促进或抑制不同类型癌细胞的增殖和迁移。本综述总结SOX5在多系统中的生理和病理作用机制,并展望其在疾病治疗靶点开发方面的应用潜力。 展开更多
关键词 SOX5 软骨发育 免疫调节 癌症进展 Lamb-Shaffer综合征
原文传递
毛竹miR156靶向SPL19A调节植物年龄发育
20
作者 张晓彦 陈自银 +4 位作者 谢开旺 雷春华 骆文浩 王琴 张莉 《福建农林大学学报(自然科学版)》 北大核心 2025年第4期485-494,共10页
【目的】研究毛竹miR156(PhemiR156)及其靶基因SPL(PheSPL)在调控植物年龄发育中的作用,为毛竹开花机制研究及遗传改良提供依据。【方法】通过同源序列比对筛选PhemiR156和PheSPL基因并分析其序列、结构及理化性质;利用毛竹转录组数据... 【目的】研究毛竹miR156(PhemiR156)及其靶基因SPL(PheSPL)在调控植物年龄发育中的作用,为毛竹开花机制研究及遗传改良提供依据。【方法】通过同源序列比对筛选PhemiR156和PheSPL基因并分析其序列、结构及理化性质;利用毛竹转录组数据研究基因表达模式;构建拟南芥PheMIR156和PheSPL异源转基因株系,并分析其年龄发育表型。【结果】在毛竹中鉴定到14个PhemiR156前体基因和36个PheSPL同源基因,其中,17个PheSPL基因有miR156结合位点,32个基因编码含SBP结构域的蛋白。PhemiR156表达量随着毛竹年龄增长而降低,而PheSPL在生殖发育阶段的表达量较高;过表达PheMIR156H显著抑制了拟南芥的年龄发育,而过表达PheSPL19A则导致拟南芥提前进入成年期。【结论】毛竹中的PheMIR156H和靶基因PheSPL19A分别抑制和促进植物年龄发育。 展开更多
关键词 毛竹 miR156-SPL分子模块 年龄发育 拟南芥 异源表达
在线阅读 下载PDF
上一页 1 2 27 下一页 到第
使用帮助 返回顶部