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开沟器铲尖表面等离子熔覆Mo_(2)FeB_(2)涂层制备及其磨损性能
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作者 刘敬春 田铁柱 +2 位作者 赵建国 王会强 郝建军 《农业工程学报》 EI CAS CSCD 北大核心 2024年第9期39-48,共10页
为了解决开沟器铲尖耕作过程中耐磨性差、易失效的问题,利用等离子熔覆技术在开沟器铲尖表面制备Mo_(2)FeB_(2)金属陶瓷涂层,并对其微观组织结构、物相组成、显微硬度以及耐磨性能进行研究。通过正交试验得到熔覆层制备的最优工艺参数... 为了解决开沟器铲尖耕作过程中耐磨性差、易失效的问题,利用等离子熔覆技术在开沟器铲尖表面制备Mo_(2)FeB_(2)金属陶瓷涂层,并对其微观组织结构、物相组成、显微硬度以及耐磨性能进行研究。通过正交试验得到熔覆层制备的最优工艺参数组合为:熔覆电流80 A,熔覆距离10 mm,熔覆速度20 cm/min,并以此来制备耐磨熔覆层。结果表明,熔覆层与基体呈现良好冶金结合,其组织主要由方形、蝶状、十字镖形、树形以及不规则长条状的硬质相、网状共晶组织和铁基粘结相组成,其主要物相组成为Mo_(2)FeB_(2)、M_(3)B_(2)(M:Mo,Fe,Cr)、(Cr,Fe)7C3、MoB、CrB、Fe2B以及Fe-Cr固溶体。熔覆层的平均显微硬度为9618 MPa,为开沟器铲尖基体的2.79倍。相同工况下的磨损试验表明熔覆层的平均磨损量(19.20 mg)和平均摩擦系数(0.294)与基体相比分别降低了52.9%和42.4%;不同载荷下的磨损试验表明,随着载荷的增加,熔覆层与基体的摩擦系数呈现逐渐减小的趋势,但熔覆层的整体摩擦系数均低于基体,且其磨损形貌较基体轻微。土槽试验结果表明,熔覆层开沟器铲尖的平均磨损量(4.60 g)比常规开沟器铲尖(15.54 g)降低了70.4%;田间试验结果表明,在实际土壤环境中,开沟器铲尖熔覆层的平均磨损量(34.34 g)仅为常规开沟器铲尖(79.06 g)的43.4%,通过对比磨损形貌发现,熔覆层的存在可以有效抵御土壤磨损,使开沟器铲尖在经过长时间的磨损后能最大程度的保持原貌,从而使其表现出优异的耐磨性能。该研究结果可为提高农机触土部件的耐磨性提供理论参考和可行技术方案。 展开更多
关键词 农业机械 显微结构 硬度 开沟器铲尖 等离子熔覆 Mo2feb2 磨损
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Letters and Visits System Optimization and Implementation
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作者 Mu Tao Xi Chen Dan Qian 《Journal of Software Engineering and Applications》 2024年第9期731-739,共9页
The letters and visits system plays a vital role in government work, serving as a crucial tool for supervising law enforcement and administrative conduct, ensuring public officials’ integrity, and promoting governanc... The letters and visits system plays a vital role in government work, serving as a crucial tool for supervising law enforcement and administrative conduct, ensuring public officials’ integrity, and promoting governance by law. As Chinese citizens’ political awareness grows, the volume of letters and visits has increased steadily. This paper reviews the current state of letters and visits information construction, identifies challenges and problems in system integration, presents integration ideas for existing systems, and proposes an innovative approach to letters and visits system integration. This research aims to provide valuable insights and guidance for other units undertaking similar system integration efforts. 展开更多
关键词 letters and Visits INFORMATIZATION System Integration
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Cheyne-Stokes Respiration in Heart Failure Is Not a Therapeutic Target: A Lesson from CANPAP, SERVE-HF and ADVENT-HF Trials (Letter to the Editor)
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作者 Fumihiko Yasuma Junichiro Hayano 《Health》 2024年第6期561-564,共4页
Letter to the Editor.
关键词 letter to the Editor
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Letter to the Editor: Reverse T3;a Reliable Diagnostic Test for Discerning between Euthyroid Sick and Central Hypothyroidism
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作者 Udaya M. Kabadi Sarah Exley 《Open Journal of Endocrine and Metabolic Diseases》 2024年第2期73-74,共2页
关键词 letter ISM Sick
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A Letter to Mr.Tan Kah Kee
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作者 颜宇轩 叶彩霞(指导) 《疯狂英语(初中天地)》 2024年第10期66-68,共3页
Dear Mr.Tan Kah Kee,I am a student from Southern Fujian in the 21st century.And I am writing this letter to express my deep admiration for your patriotism and outstanding contribution.You are a true patriot.
关键词 And letter letter
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A Letter to My Pen Pal Mike
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作者 沈一凡 张超(指导) 《中学生英语》 2024年第5期7-7,共1页
Dear Mike,I am a middle school student this new term.I love my new school.It is big and clean.There are many green trees in it.And there is a big garden in front of the playground,too.Our classroom is big,too.I have 4... Dear Mike,I am a middle school student this new term.I love my new school.It is big and clean.There are many green trees in it.And there is a big garden in front of the playground,too.Our classroom is big,too.I have 45 classmates.They are all very nice.We have some good teachers,too.Our English teacher is Mr.Zhang. 展开更多
关键词 And letter CLASSROOM
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A Letter to Qian Xuesen
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作者 温欣澎 闫明(指导) 《疯狂英语(初中天地)》 2024年第10期69-69,共1页
Dear Grandpa Qian,As a middle school student,I am deeply touched by your patriotism(爱国精神)and dedication(奉献精神).In 1949,when the People’s Republic of China was founded and everything remained to be developed.Yo... Dear Grandpa Qian,As a middle school student,I am deeply touched by your patriotism(爱国精神)and dedication(奉献精神).In 1949,when the People’s Republic of China was founded and everything remained to be developed.You gave up a well-paid job in the United States and returned to China at the risk of your life. 展开更多
关键词 letter GRAND ISM
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Letter from Ms.Cordula Gabel-Obermaier Executive for IOFF-Subspecialty Fellowships (IOFF-IJO Subspecialty Fellowship for Dr.Pinar Kosekahya)
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《International Journal of Ophthalmology(English edition)》 SCIE CAS 2023年第3期F0003-F0003,共1页
DearProf.Xiu-Wen Hu,I hope this find you well.My sincere best wishes for a happy and peaceful new year!Dr.Pinar Kosekahya from Turkey was the lucky recipient of the IJO 2022 funds thank you so much for the generous co... DearProf.Xiu-Wen Hu,I hope this find you well.My sincere best wishes for a happy and peaceful new year!Dr.Pinar Kosekahya from Turkey was the lucky recipient of the IJO 2022 funds thank you so much for the generous contribution. 展开更多
关键词 since letter thank
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Appreciation letter from Dr.Pinar Kosekahya from Turkey the Icuky recipient of the IJO 2022 funds
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作者 Xiu-Wen Hu 《国际眼科杂志》 CAS 北大核心 2023年第4期F0003-F0003,共1页
I am Dr.Pinar Kosekahya from Ankara,Turkey.I wanted to personally thank you and the organization you represent,for sponsoring me in an IOFF-Subspeciality Fellowship.I am very grateful for this opportunity and I want y... I am Dr.Pinar Kosekahya from Ankara,Turkey.I wanted to personally thank you and the organization you represent,for sponsoring me in an IOFF-Subspeciality Fellowship.I am very grateful for this opportunity and I want you to know that I will not take it for granted. 展开更多
关键词 letter thank TURKEY
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Appreciation letter from Dr.Pinar Kosekahya from Turkey the lcuky recipient of the IJO 2022 funds
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作者 Pinar Kosekahya 《国际眼科杂志》 CAS 北大核心 2023年第3期F0003-F0003,共1页
To Dear Prof.Xiu-Wen Hu International Journal of Ophthalmology Press,China I am Dr.Pinar Kosekahya from Ankara,Turkey.I wanted to personally thank you and the organization you represent,for sponsoring me in an IOFF-Su... To Dear Prof.Xiu-Wen Hu International Journal of Ophthalmology Press,China I am Dr.Pinar Kosekahya from Ankara,Turkey.I wanted to personally thank you and the organization you represent,for sponsoring me in an IOFF-Subspeciality Fellowship.I am very grateful for this opportunity and I want you to know that I will not take it for granted.Once I was accepted into the International Ophthalmology Fellowship Foundation,I became overwhelmed with excitement.My country was in an economic crisis due to Covid-19 pandemic and I was very worried that I would miss this chance if I can not get a sponsorship.I was extremely happy when dear Cordula informed me about my Educational Grant. 展开更多
关键词 letter thank TURKEY
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Appreciation letter from Dr.Pinar Kosekahya from Turkey the lcuky recipient of the IJO 2022 funds
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《International Journal of Ophthalmology(English edition)》 SCIE CAS 2023年第4期F0002-F0002,共1页
To Dear Prof.Xiu-Wen Hu International Journal of Ophthalmology Press,China I am Dr.Pinar Kosekahya from Ankara,Turkey.I wanted to personally thank you and the organization you represent,for sponsoring me in an IOFF-Su... To Dear Prof.Xiu-Wen Hu International Journal of Ophthalmology Press,China I am Dr.Pinar Kosekahya from Ankara,Turkey.I wanted to personally thank you and the organization you represent,for sponsoring me in an IOFF-Subspeciality Fellowship.I am very grateful for this opportunity and I want you to know that I will not take it for granted. 展开更多
关键词 letter TURKEY thank
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Appreciation letter from Dr.Pinar Kosekahya from Turkey the lcuky recipient of the IJO 2022 funds
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作者 Xiu-Wen Hu 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2023年第2期F0002-F0002,共1页
To Dear Prof.Xiu-Wen Hu International Journal of Ophthalmology Press,China I am Dr.Pinar Kosehahya Bran Ankara,Turkey.I wanted to personally thank you and the organization you represent,for sponsoring me in an IOFF-Su... To Dear Prof.Xiu-Wen Hu International Journal of Ophthalmology Press,China I am Dr.Pinar Kosehahya Bran Ankara,Turkey.I wanted to personally thank you and the organization you represent,for sponsoring me in an IOFF-Subspeciality Fellowship.I am very grateful for this opportunity and I want you to know that I will not take it for granted.Once was accepted into the Intetrnational Ophthalmology Fellowship Foundation,I became overwhelmed with excitement.My country was in an economie crisis due to Covid-19 pandemic and I was ver worried that I would miss this chance if I can not get a sponsorship.I was extremely happy when dear Cordula informed me about my Educational Grant. 展开更多
关键词 letter thank TURKEY
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Appreciation letter from Dr. Pinar Kosekahya from Turkey the lcuky recipient of the IJO 2022 funds
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作者 Pinar Kosekahya 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2023年第3期F0002-F0002,共1页
ToDearProf.Xiu-Wen Hu International Journal of Ophthalmology Press,China I am Dr.Pinar Kosekahya from Ankara,Turkey.I wanted to personally thank you and the organization you represent,for sponsoring me in an IOFF-Subs... ToDearProf.Xiu-Wen Hu International Journal of Ophthalmology Press,China I am Dr.Pinar Kosekahya from Ankara,Turkey.I wanted to personally thank you and the organization you represent,for sponsoring me in an IOFF-Subspeciality Fellowship.I am very grateful for this opportunity and I want you to know that I will not take it for granted.Once I was accepted into the International Ophthalmology Fellowship Foundation,I became overwhelmed with excitement.My country was in an economic crisis due to Covid-19 pandemic and I was very worried that I would miss this chance if I can not get a sponsorship.I was extremely happy when dear Cordula informed me about my Educational Grant. 展开更多
关键词 letter TURKEY thank
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Analysis of the Influence of Clothing on Characterization from Symbolism: Taking The Scarlet Letter, Daisy Miller, and Dry September as Examples
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作者 HU Ya-ling 《Journal of Literature and Art Studies》 2023年第12期978-982,共5页
In the novels, the clothing worn by the characters are symbols made and used by the authors to express the characters’ personality and deepen the theme, and grasping their symbolism helps to enter into the interior o... In the novels, the clothing worn by the characters are symbols made and used by the authors to express the characters’ personality and deepen the theme, and grasping their symbolism helps to enter into the interior of the novels and understand their essence. This paper will analyze and interpret the clothing of typical female characters in The Scarlet Letter, Daisy Miller and Dry September from the perspective of symbolism, so as to illustrate how the symbolism of clothing, as a kind of symbols, shapes the image of the main characters. 展开更多
关键词 SYMBOLISM CLOTHING CHARACTERIZATION The Scarlet letter Daisy Miller Dry September
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A Letter——My School Life
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作者 贾涵睿 田争利(指导) 《疯狂英语(双语世界)》 2023年第4期73-74,共2页
Dear Sue,I hope this letter finds you well.It brings me great joy to receive your letter,and I am eager to share my school experiences with you.Our school day is quite structured,with seven classes starting at 830 a.m... Dear Sue,I hope this letter finds you well.It brings me great joy to receive your letter,and I am eager to share my school experiences with you.Our school day is quite structured,with seven classes starting at 830 a.m.and concluding at 340 p.m. 展开更多
关键词 letter STARTING LIFE
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基于三维质量结构模型构建神经外科患者身体约束护理质量评价指标体系
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作者 吴惠文 丘宇茹 +3 位作者 鲍惠莲 高艳春 刘娟英 毛丽玲 《现代医院》 2024年第6期867-870,873,共5页
目的 构建神经外科患者身体约束护理质量评价指标,用于指导护士临床实践工作,持续改进工作流程与质量。方法 以三维质量结构模型为理论指导,通过回顾文献和专家访谈,运用Delphi专家函询法,构建神经外科患者身体约束护理质量评价指标。结... 目的 构建神经外科患者身体约束护理质量评价指标,用于指导护士临床实践工作,持续改进工作流程与质量。方法 以三维质量结构模型为理论指导,通过回顾文献和专家访谈,运用Delphi专家函询法,构建神经外科患者身体约束护理质量评价指标。结果 3轮专家函询问卷的有效回收率均为100%,专家权威系数均>0.9,一、二级的协调系数分别为0.126、0.094(P<0.001),最终确定的评价指标包括一级指标3个,二级指标31个。结论 建立的评价指标科学、规范、内容全面,对神经外科患者身体约束护理质量具有指导作用。 展开更多
关键词 神经外科 身体约束 Delphi专家函询法 护理质量
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论新时代信访工作法治化模式
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作者 陈柏峰 《政治与法律》 北大核心 2024年第7期60-75,共16页
党的十八大以来,信访工作法治化改革持续推进,其制度成果集中体现于《信访工作条例》。新时代的信访工作法治化,要求每个环节严格依法,做到预防法治化、受理法治化、办理法治化、监督追责法治化、维护秩序法治化。它建立于“在法治轨道... 党的十八大以来,信访工作法治化改革持续推进,其制度成果集中体现于《信访工作条例》。新时代的信访工作法治化,要求每个环节严格依法,做到预防法治化、受理法治化、办理法治化、监督追责法治化、维护秩序法治化。它建立于“在法治轨道上全面建设社会主义现代化国家”“全面推进国家各方面工作法治化”的理论基础之上,显现出鲜明的时代特征,形成了制度化规范化的“信访渠道汇集问题、依法分流处理、兜底解决剩余问题”的信访工作法治化模式。这种模式具有高度的实践回应性,信访渠道聚集问题有其社会心理基础,分流处理问题契合体制运行规律,剩余问题兜底解决有赖综合施策。这种模式不仅回应合法诉求,而且能有效回应政策性、情感性等各种诉求,体现了信访工作的群众工作属性,在法治化的同时保持了社会主义底色。 展开更多
关键词 信访 信访工作 法治化 群众工作
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贺信精神引领下微纳加工技术课课程思政教学改革与实践
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作者 王晨曦 刘威 +3 位作者 张威 原小慧 闫寒 田艳红 《高教学刊》 2024年第30期61-64,共4页
微纳加工技术课程的教学内容与我国当前所面临的高端芯片制造“卡脖子”技术密切相连。2020年以来该课程将习近平总书记贺信精神融入课程思政教学设计,通过寓德于教、寓哲于教、寓念于教和寓新于教的“四位一体”方式,引导学生树立坚定... 微纳加工技术课程的教学内容与我国当前所面临的高端芯片制造“卡脖子”技术密切相连。2020年以来该课程将习近平总书记贺信精神融入课程思政教学设计,通过寓德于教、寓哲于教、寓念于教和寓新于教的“四位一体”方式,引导学生树立坚定理想信念,厚植爱国主义情怀,提升品德修养,激发远大志向。该文列举多个典型案例,经过教学改革基本实现知识传授、价值引领和情怀根植三方面的有机统一,期待该教学设计及经验分享为全国各高校电子封装专业的课程思政教学改革提供借鉴。 展开更多
关键词 贺信精神 课程思政 微纳加工 芯片制造 教学改革
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凡是锦囊,皆为妙计?——论陀思妥耶夫斯基早中期小说的“信中信”现象
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作者 万海松 《北方论丛》 2024年第5期96-107,共12页
在陀思妥耶夫斯基1870年前的早中期小说如《穷人》《双重人格》《九封信组成的小说》《地下室手记》《罪与罚》《白痴》等中,普遍存在“文中信”“文中文”和“信中信”的形式(本文统称为“信中信”现象)。这些在文体上属于书信的内容,... 在陀思妥耶夫斯基1870年前的早中期小说如《穷人》《双重人格》《九封信组成的小说》《地下室手记》《罪与罚》《白痴》等中,普遍存在“文中信”“文中文”和“信中信”的形式(本文统称为“信中信”现象)。这些在文体上属于书信的内容,叙事的层级等次不一,功能和效果也不尽相同。它们虽然并非都是提供现成答案的“锦囊妙计”,但确实有利于操控叙事进程:有的是为了设置更多的复杂线索、转移叙事的核心,有的则是为了避开焦点、混淆视听、制造冲突,在故意设置的混乱背景中立体展现主人公的心理和思想。作为套叠叙事、亚文本或次亚文本的“信中信”现象,既是陀思妥耶夫斯基独特的书信体和类书信体书写,也是其小说创作中一种力求创新突破的叙事策略。 展开更多
关键词 陀思妥耶夫斯基 早中期小说 “信中信” 类书信体书写 叙事策略
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鲁迅用笺图像考
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作者 刘运峰 《绍兴文理学院学报》 2024年第3期63-77,共15页
鲁迅对笺纸情有独钟。鲁迅使用笺纸的时间长达30余年,除了出版机构和大学自印的公用笺外,他还有意识地搜集笺纸,从而使得鲁迅的用笺格外丰富,有些还带有一定的寓意。本文将鲁迅用笺分作不同的时期并以时间为序,从图像学角度对鲁迅用笺... 鲁迅对笺纸情有独钟。鲁迅使用笺纸的时间长达30余年,除了出版机构和大学自印的公用笺外,他还有意识地搜集笺纸,从而使得鲁迅的用笺格外丰富,有些还带有一定的寓意。本文将鲁迅用笺分作不同的时期并以时间为序,从图像学角度对鲁迅用笺进行考释和研究。 展开更多
关键词 鲁迅 笺纸 考释
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