检索结果-南通市图书馆

Oil Crop Science 2024年第1期9卷 8-19页

作者： we Si Ruisheng Wang Mingde Wu Long Yang Guoqing Li Jing Zhang State Key Laboratory of Agricultural Microbiology and Key Laboratory of Plant Pathology of Hubei Province Huazhong Agricultural UniversityWuhan 430070China Qinghai Academy of Agriculture and Forestry Sciences Qinghai UniversityXiningQinghai Province810016China

Five stems of rapeseed with abundant black microsclerotia were collected from Huangyuan County of Qinghai Province,China,and fungal isolates were obtained from the *** were identified based on morphology,molecular features and specific PCR *** results showed that the 10 fungal isolates belonged to Verticillium longisporum lineage A1/*** of the 10 isolates(HW7-1)was tested for virulence on three species of rapeseed,including *** Zhongshuang 9,*** Qingyou 9 and *** Tayou 2 by conidia inoculation of HW7-1 on roots of young *** seedlings were inoculated with *** conidia or water *** seedlings of these treatments were transplanted in culture mix and incubated in a growth chamber(20℃).Results suggested that the control seedlings of three cultivars appeared quite healthy,while the seedlings inoculated with HW7-1 turned yellowing leaves,seedling stunting or even death after 22 days *** was re-isolated from he yellow leaves,thus fulfilling Koch's ***,compared to the control treatments,inoculation with HW7-1 caused flowering delay and seed yield reduction on Tayou 2 with production of microsclerotia on the *** our knowledge,this is the first report of *** lineage A1/D3 on rapeseed in northwestern China.

关键词： Verticillium longisporum lineage A1/D3 Virulence Rapeseed China

Adaptive neural network control of a 2-DOF helicopter system considering input constraints and global prescribed performance

在线全文

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2024年第7期67卷 224-239页

作者： Zhijia ZHAO Jiale WU Zhijie LIU we HE C.L.Philip CHEN School of Mechanical and Electrical Engineering Guangzhou University School of Intelligence Science and Technology and Key Laboratory of Intelligent Bionic Unmanned Systems of Ministry of Education University of Science and Technology Beijing School of Computer Science and Engineering South China University of Technology Pazhou Lab

In this study, an adaptive neural network(NN) control is proposed for nonlinear two-degree-offreedom(2-DOF) helicopter systems considering the input constraints and global prescribed ***, radial basis function NN(RBFNN) is employed to estimate the unknown dynamics of the helicopter system. Second, a smooth nonaffine function is exploited to approximate and address nonlinear constraint functions. Subsequently, a new prescribed function is proposed, and an original constrained error is transformed into an equivalent unconstrained error using the error transformation and barrier function transformation methods. The analysis of the established Lyapunov function proves that the controlled system is globally uniformly bounded. Finally, the simulation and experimental results on a constructed Quanser's test platform verify the rationality and feasibility of the proposed control.

关键词： adaptive NN control 2-DOF helicopter global prescribed performance input constraints

同方期刊数据库

Precursor engineering enables high-performance all-inorganic CsPbIBr_(2) perovskite solar cells with a record efficiency approaching 13%

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第3期90卷 16-22,I0003页

作者： Qingyan Chang Yidan An Huaiman Cao Yuzhen Pan Liangyu Zhao Yulong Chen Yi we Sai-Wing Tsang Hin-Lap Yip Licheng Sun Ze Yu State Key Laboratory of Fine Chemicals Dalian University of Technology(DUT)Dalian 116024LiaoningChina Department of Materials Science and Engineering City University of Hong KongKowloon 999077Hong KongChina School of Chemistry Dalian University of Technology(DUT)Dalian 116024LiaoningChina Key Laboratory of Materials Modification by Laser Ionand Electron Beams(Ministry of Education)Dalian University of Technology(DUT)Dalian 116024LiaoningChina School of Energy and Environment City University of Hong KongKowloon 999077Hong KongChina Center of Artificial Photosynthesis for Solar Fuels and Department of Chemistry School of ScienceWestlake UniversityHangzhou 310024ZhejiangChina Department of Chemistry School of Engineering Sciences in ChemistryBiotechnology and HealthKTH Royal Institute of Technology10044 StockholmSweden

All-inorganic CsPbIBr_(2) perovskite has attracted widespread attention in photovoltaic and other optoelectronic devices because of its superior thermal ***,the deposition of high-quality solutionprocessed CsPbIBr_(2) perovskite films with large thicknesses remains ***,we develop a triple-component precursor(TCP) by employing lead bromide,lead iodide,and cesium bromide,to replace the most commonly used double-component precursor(DCP) consisting of lead bromide and cesium ***,the TCP system significantly increases the solution concentration to 1.3 M,leading to a larger film thickness(~390 nm) and enhanced light *** resultant CsPbIBr_(2) films were evaluated in planar n-i-p structured solar cells,which exhibit a considerably higher optimal photocurrent density of 11.50 mA cm^(-2) in comparison to that of DCP-based devices(10.69 mA cm^(-2)).By adopting an organic surface passivator,the maximum device efficiency using TCP is further boosted to a record efficiency of 12.8% for CsPbIBr_(2) perovskite solar cells.

关键词： All-inorganic perovskite solar cells CsPbIBr_(2) Precursor engineering Solubility High performance

The chemical characteristics of different sodium iron ethylenediaminetetraacetate sources and their relative bioavailabilities for broilers fed with a conventional corn‑soybean meal diet

在线全文

学校读者我要写书评

暂无评论

Journal of Animal Science and Biotechnology 2024年第2期15卷 826-843页

作者： Shengchen Wang Bingxin Wu Ling Zhu weiyun Zhang Liyang Zhang we Wu Jiaqi Wu Yun Hu Tingting Li Xiaoyan Cui Xugang Luo College of Animal Science and Technology Yangzhou UniversityYangzhou 225000People’s Republic of China Mineral Nutrition Research Division State Key Laboratory of Animal NutritionInstitute of Animal ScienceChinese Academy of Agricultural SciencesBeijing 100193China

Background Our previous studies demonstrated that divalent organic iron(Fe)proteinate sources with higher complexation or chelation strengths as expressed by the greater quotient of formation(Qf)values displayed higher Fe bioavailabilities for *** iron ethylenediaminetetraacetate(NaFeEDTA)is a trivalent organic Fe source with the strongest chelating ligand ***,the bioavailability of Fe when administered as NaFeEDTA in broilers and other agricultural animals remains ***,the chemical characteristics of 12 NaFeEDTA products were *** these,one feed grade NaFeEDTA(Qf=2.07×10^(8)),one food grade NaFeEDTA(Qf=3.31×10^(8)),and one Fe proteinate with an extremely strong chelation strength(Fe-Prot ES,Qf value=8,590)were *** bioavailabilities relative to Fe sulfate(FeSO_(4)·7H_(2)O)for broilers fed with a conventional corn-soybean meal diet were evaluated during d 1 to 21 by investigating the effects of the above Fe sources and added Fe levels on the growth performance,hematological indices,Fe contents,activities and gene expressions of Fe-containing enzymes in various tissues of *** NaFeEDTA sources varied greatly in their chemical *** Fe concentration(PI),transferrin saturation(TS),liver Fe content,succinate dehydrogenase(SDH)activities in liver,heart,and kidney,catalase(CAT)activity in liver,and SDH mRNA expressions in liver and kidney increased linearly(Pwere detected(Pwere 139%,155%,and 166%,***

关键词： Broilers Chelation strengths Fe-containing enzymes NaFeEDTA Relative bioavailabilities

Inhibition of Heterogeneous Nucleation in Water by Hydrogel Coating

在线全文

学校读者我要写书评

暂无评论

Research 2024年第2期2023卷 139-147页

作者： Siyang Li Panpan Zhu Yaoting Xue Lei Wangg Tuck-Whye Wong Xuxu Yang Haoei Zhou Tiefeng Li we Yang Department of Engineering Mechanics Zhejiang UniversityHangzhou 310027China Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province Zhejiang UniversityHangzhou 310027China Center for X-Mechanics Department of Engineering MechanicsZhejiang UniversityHangzhou 310027China School of Biomedical Engineering and Health Sciences and Advanced Membrane Technology Research Centre Universiti Teknologi MalaysiaSkudai 81310Malaysia

Heterogeneous nucleation plays a critical role in the phase transition of water,which can cause damage in various ***,we report that heterogeneous nucleation can be inhibited by utilizing hydrogel coatings to isolate solid surfaces and ***,which contain over 90%water when fully swelled,exhibit a high degree of similarity to *** to this similarity,there is a great energy barrier for heterogeneous nucleation along the water-hydrogel ***,hydrogel coatings,which possess polymer networks,exhibit higher fracture energy and more robust adhesion to solid surfaces compared to *** high fracture and adhesion energy acts as a deterrent for fracture nucleation within the hydrogel or along the hydrogel-solid *** a hydrogel layer approximately 100μm thick,the boiling temperature of water under atmospheric pressure can be raised from 100 to 108℃.Notably,hydrogel coatings also result in remarkable reductions in cavitation pressure on multiple solid *** have demonstrated the efficacy of hydrogel coatings in preventing damages resulting from acceleration-induced *** coatings have the potential to alter the energy landscape of heterogeneous nucleation on the water-solid interface,making them an exciting avenue for innovation in heat transfer and fluidic systems.

关键词： fracture cavitation similarity

城市间环境协作治理网络密度、技术联盟对企业绿色创新影响的研究

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

大连理工大学学报（社会科学版） 2024年第2期45卷 17-23页

作者：韦院英暨南大学博士后流动站广东广州523808

城市群作为我国绿色创新主体聚集区,是我国实现绿色经济高质量发展重要驱动力,企业作为重要的绿色创新主体,是城市群实现绿色发展的关键。以2009~2018年5个国家级和5个区域性城市群内676家重污染行业企业为样本,运用社会网络分析法,研... 详细信息

城市群作为我国绿色创新主体聚集区,是我国实现绿色经济高质量发展重要驱动力,企业作为重要的绿色创新主体,是城市群实现绿色发展的关键。以2009~2018年5个国家级和5个区域性城市群内676家重污染行业企业为样本,运用社会网络分析法,研究城市间环境协作治理网络密度对企业绿色创新的影响机制。研究发现:城市间环境协作治理密度对企业绿色创新起到显著的正向影响,技术联盟是城市间环境协作治理网络密度影响企业绿色创新的中介变量,且受到城市群经济水平调节影响。

关键词：城市群网络密度技术联盟企业绿色创新

同方期刊数据库

在线全文

学校读者我要写书评

暂无评论

建构文化人工智能的可能路径

学术前沿 2024年第14期 31-44页

作者：魏屹东山西大学哲学学院

生成式人工智能大模型的发展表明,新一代人工智能通达通用人工智能的目标正在接近。而通用人工智能要实现通用性、人性化和广泛应用,具有人类文化特征的属性是其必备的要件。将意识、情感、伦理等高级认知因素嵌入人工智能系统,也就是... 详细信息

生成式人工智能大模型的发展表明,新一代人工智能通达通用人工智能的目标正在接近。而通用人工智能要实现通用性、人性化和广泛应用,具有人类文化特征的属性是其必备的要件。将意识、情感、伦理等高级认知因素嵌入人工智能系统,也就是建构具有人性的文化人工智能,无疑是一种可能出路。如何让人工智能成为文化人工智能这种具身人工智能是一个重大挑战。从哲学方法论审视,建构文化人工智能的可能路径包括,智能体的范畴论与语境论的整合,感性与理性的整合,通过机制进行功能建模,通过结构功能实现适应性表征,以及通过语境觉知应对意外情况,最终通过严格的“图灵测试”。如果这些都做到了,就有望在人工智能系统中嵌入人类特有的文化特征,使其成为具有人性的文化人工智能。

关键词：大语言模型通用人工智能具身人工智能文化人工智能适应性表征

基于5G通信技术的智慧电厂作业人员定位方法

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

长江信息通信 2024年第6期37卷 193-195页

作者：陈玉良张雨蓉魏铭毅国家能源集团内蒙古上海庙发电有限公司内蒙古鄂尔多斯016200

常规的智慧电厂作业人员定位方法以作业人员发送的电子标签信号为主,忽略了作业人员的动态变化情况,影响作业人员的定位精准度。因此,设计了基于5G通信技术的智慧电厂作业人员定位方法。增强智慧电厂作业人员通信带宽,从数据监测、控制... 详细信息

常规的智慧电厂作业人员定位方法以作业人员发送的电子标签信号为主,忽略了作业人员的动态变化情况,影响作业人员的定位精准度。因此,设计了基于5G通信技术的智慧电厂作业人员定位方法。增强智慧电厂作业人员通信带宽,从数据监测、控制指令、远程控制等方面,获取作业人员的实时位置数据,从而确保电厂人员的作业安全性。基于5G通信技术构建智慧电厂作业人员定位模型,利用5G通信技术的高速度与大容量特性,支持作业人员更加精准的定位服务,从而实现智慧电厂人员的实时监控与调度。求解智慧电厂作业人员定位评价因子,将几何精度因子、均方误差、均方根误差、克拉美罗下界、累计概率分布函数等指标,满足智慧电厂作业人员定位精准度需求。采用对比实验,验证了该方法的定位精准度更高,能够应用于实际生活中。

关键词： 5G通信技术智慧电厂作业人员定位方法

基于基准关联度和AHP-熵权法优化经典名方达原饮的提取工艺

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

时珍国医国药 2024年第3期35卷 612-615页

作者：张荣华靳梓微邱智东李银清长春中医药大学药学院吉林长春130117

目的评价现代工艺与传统工艺产品质量的一致性,基于基准关联度和层析分析法(AHP)-熵权法优选经典名方达原饮的提取工艺。方法在遵古原则的基础上,以槟榔碱、厚朴酚、和厚朴酚、黄芩苷含量及指纹图谱相似度和出膏率为评价指标,引用基... 详细信息

目的评价现代工艺与传统工艺产品质量的一致性,基于基准关联度和层析分析法(AHP)-熵权法优选经典名方达原饮的提取工艺。方法在遵古原则的基础上,以槟榔碱、厚朴酚、和厚朴酚、黄芩苷含量及指纹图谱相似度和出膏率为评价指标,引用基准关联度评价工艺产品质量一致性,用AHP-熵权法确定指标权重系数,结合正交试验优选经典名法达原饮的提取工艺参数并验证。结果基准关联度结合层次分析-熵权法优选出的达原饮最佳提取工艺为加水量8倍,提取1次,每次1 h。结论筛选出达原饮现代提取工艺参数具有可行性,为经典名法达原饮复方制剂的开发研究奠定基础。

关键词：达原饮提取工艺基准关联度层次分析法熵权法

同方期刊数据库

指向“儿童创想家”成长的课程框架及其实施理路

在线全文

学校读者我要写书评

暂无评论

中国教育学刊 2024年第6期 34-38,102页

作者：姚君丹徐姣庄薇江苏省常州市武进区东龙实验小学江苏常州213161 江苏省常州市武进区东龙实验小学综合办江苏常州213161 江苏省常州市武进区东龙实验小学课程部江苏常州213161

儿童创想课程是在学校创想理念指引下,以国家课程为基础,以校本课程为补充的学校课程的整体建构。课程体系的建构中,用整体育人的视野,厘定创想课程的内涵范畴,形成创想课程的价值坐标,用系统建构的思维规划、用实践育人的思路建构创想... 详细信息

儿童创想课程是在学校创想理念指引下,以国家课程为基础,以校本课程为补充的学校课程的整体建构。课程体系的建构中,用整体育人的视野,厘定创想课程的内涵范畴,形成创想课程的价值坐标,用系统建构的思维规划、用实践育人的思路建构创想课程。由此,学校课程从单科突进走向复合式的课程群,从规定式的课程走向融合式的课程,从书本的静态知识到动手动脑的实践课程。

关键词：创想课程整体育人实践育人