NONE

作品数:161被引量:79H指数:4
导出分析报告
相关领域:医药卫生更多>>
相关作者:吕鹏魏全嘉屠鹏飞包天佑格日立更多>>
相关机构:清华大学江苏省上冈高级中学四川省三台中学四川大学更多>>
相关期刊:更多>>
相关基金:国家自然科学基金香港乐施会资助项目国家教育部博士点基金国家重点基础研究发展计划更多>>
-

检索结果分析

结果分析中...
条 记 录,以下是1-10
视图:
排序:
A novel rotor dynamic balancing method based on blade tip clearance measurement without the once per revolution sensor
《Chinese Journal of Aeronautics》2025年第2期445-458,共14页Weibo LI Weimin WANG Shuai ZHANG Jiale WANG Yulong LIN Tianqing LI 
supported by the Key Program of National Natural Science Foundation of China(No.92160203);National Natural Science Foundation of China(No.92360306).
The existence of the aeroengine casing,limited monitoring points,and multi-fault characteristics make obtaining the rotor’s vibration transmission characteristics challenging,resulting in difficulties accurately iden...
关键词:AEROENGINE Rotor unbalance Composite sensor None once per revolution Blade tip clearance Dynamic balancing 
Luminescent coordination polymers with mixed carboxylate and triazole ligands for rapid detection of chloroprene metabolite
《Chinese Journal of Structural Chemistry》2024年第9期40-45,共6页Yue Mao Zhonghang Chen Tiankai Sun Wenyue Cui Peng Cheng Wei Shi 
supported by the National Natural Science Foundation of China(92156002,22261132509 and 21931004).
Chloroprene is a monomer widely used in the production of neoprene,and 1-hydroxy-2-butanone(1H2B)is one of the metabolites of chloroprene in urine,which can place a significant impact on human health by disrupting the...
关键词:CHLOROPRENE 1-Hydroxy-2-butanone Coordination polymers Luminescent detection Sensing mechanism 
Agatha Christie's "And Then There Were None" Hits China An Unforgettable Journey of Suspense and Drama
《城市漫步(GBA版)》2024年第7期34-35,共2页
For fans of detective shows and the legendary works of Agatha Christie,a new theatrical adaptation of"And Then There Were None"is set to captivate audiences with its thrilling mystery and intricate plot.Known for her ...
关键词:FORGET nit CHRISTIE 
Python语言处理各类空值的方法研究被引量:1
《电脑知识与技术》2023年第34期38-40,58,共4页蔡黎亚 李淑萍 
江苏省高等教育教改研究立项重点课题:基于CDIO工程教育模式的活页式教材开发与建设研究(2021JSJG194);苏州工业园区服务外包职业学院校级教改课题:基于CDIO工程教育模式的活页式教材开发与建设研究(JG-202105);江苏高校“青蓝工程”优秀教学团队项目(苏教师函[2020]10号);2022年江苏省职业教育集成电路技术“双师型”名师工作室(项目批准号:苏教师函[2022]13号);2023年苏州工业园区服务外包职业学院数据分析技术“双师型”名师工作室(苏科院(筹)[2023]4号)。
在各类编程语言中的空值表述都有所不同。对于数据分析而言,筛选出当前表内的空值并对其进行有效填充或进行其他操作,是数据清洗过程中的重要一环。该文对各类编程语言中可能出现的空值表述方法进行了梳理汇总,然后通过Python中的panda...
关键词:数据处理 PYTHON PANDAS 空值 NONE NaN NaT NULL NA 
A pseudo transient nonequilibrium method for rigorous simulation of multicomponent separation columns
《Chinese Journal of Chemical Engineering》2023年第10期57-64,共8页Jie Wu Yiqing Luo Xigang Yuan 
supported by the National Natural Science Foundation of China(21978203).
Nonequilibrium stage model is a significant improvement in multicomponent separation process simulation,but more equations are involved and the solution of the model equations,which relies on an adequate initial guess...
关键词:Nonequilibrium stage model Pseudo-transient continuation Distillation Numerical simulation Systems engineering 
Ligand enabled none-oxidative decarbonylation of aliphatic aldehydes
《Chinese Chemical Letters》2023年第7期107-111,共5页Bo Li Shihao Liu Wu Fan Xiaotong Shen Jing Xu Suhua Li 
financial support from the National Natural Science Foundation of China (No. 21971260);Guangdong Natural Science Funds for Distinguished Young Scholar (No. 2018B030306018);the Program for Guangdong Introducing Innovative and Entrepreneurial Teams (No. 2017ZT07C069);the Pearl River Talent Recruitment Program (No. 2019QN01L111);the Fundamental Research Funds for the Central Universities, Sun Yatsen University (No. 22lglj06);Innovation projects of Zhengzhou tobacco research institute (No. 442020CR0320 to Wu Fan)。
Decarbonylation of aldehydes is a basic organic transformation, which has been developed for more than six-decade. However, as comparing to well-studied aromatic aldehydes, fewer examples for catalytic decarbonylation...
关键词:DECARBONYLATION Aliphatic aldehydes RHODIUM IRIDIUM LIGAND 
太阳颜色奥秘
《英语角》2023年第18期16-17,共2页
The sun appears to be shining yellow on a sunny day.Whereas at sunrise or sunset it becomes orange and red.However,the sun's real colour is none of these.It is actually white.在晴朗的日子里,太阳看起来是黄色的。在日出...
关键词:YELLOW NONE 太阳 
Childbirth:One,Two,Three,or None
《China Today》2023年第2期56-58,共3页SU LI 
Recognizing the multitude of factors affecting people’s birth decisions,the government has rolled out a slew of supportive policies and measures over the past years.RECENTLY,17 central authorities issued a guideline ...
关键词:measures EDUCATION BIRTH 
A fluorescent film sensor for high-performance detection of Listeria monocytogenes via vapor sampling
《Aggregate》2023年第1期165-172,共8页Rongrong Huang Meiqi Li Dehui Lin Yangtao Shao Congdi Shang Qianqian Liu Guijun Liu Nan Li Rong Miao Haonan Peng Yanli Tang Yu Fang 
National Natural Science Foundation of China,Grant/Award Numbers:21820102005,22132002;111 Project,Grant/Award Number:B14041;Fundamental Research Funds for the Central Universities,Grant/Award Number:2019CBLY001。
Foodborne Listeria monocytogenes poses serious threats to public health.Fast and sensitive detection of the pathogen at the point of contamination is thus crucial to halt the spread of bacteria-related diseases.Herein...
关键词:3-hydroxy-2-butanone biomarkers fluorescent film sensors Listeria monocytogenes 
由人名构成的英语习语
《英语画刊(高级)》2022年第35期20-20,共1页黄正敏(摘编) 
英语中有一些由人名构成的习语,当这些人名出现在习语中时,它们指的就不是特定的某个人了。Jack of all trades多面手,万事通;杂而不精的人【例句】He is a jack of all trades and master of none.他样样都懂一点,但都不精通。
关键词:英语习语 多面手 NONE of 例句 
检索报告 对象比较 聚类工具 使用帮助 返回顶部