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  1. Vor 10 Stunden · Ester 2 was produced by reacting thiourea derivative 1 with ethyl 2-chloro-3-oxobutanoate in MeOH containing piperidine. Hydrazide 3 was produced by reacting the latter ester with hydrazine hydrate in EtOH at reflux. By reacting hydrazide 3 with aromatic/heterocyclic aldehydes, twelve derivatives of hydrazide hydrazone 5a–l were produced. Spectral measurements and elemental analysis verified ...

  2. Vor 10 Stunden · 联想拯救者Y7000P 2023游戏本首先,给快递小哥点赞,快递小哥真的服务好,电脑上午就验机,没有任何问题,鲁大师评分将近100w分了,运行速度很快,aspen,cad,chemdraw等软件完全带的动切太顺畅了,自认为不是很重,很好,看以后用怎么样屏幕效果:清晰度很好 轻薄程度:全金属机身,轻薄流畅 ...

  3. Vor 10 Stunden · CO2 foam fracturing in tight and shale reservoirs is a revolutionary technique for commercially viable production. Nevertheless, the screening of foaming agents used in CO2 foam fracturing fluid and the understanding of foaming mechanisms have not been sufficiently investigated. This study aimed to provide a comprehensive method for evaluating and selecting an optimized foaming agent for CO2 ...

  4. Vor 10 Stunden · The imbalance of gut microbiota is an important factor leading to inflammatory bowel disease (IBD). Diffusible signal factor (DSF) is a novel quorum-sensing signal that regulates bacterial growth, metabolism, pathogenicity, and host immune response. This study aimed to explore the therapeutic effect and underlying mechanisms of DSF in a zebrafish colitis model induced by sodium dextran sulfate ...

  5. Vor 10 Stunden · 第一作者:Jinjie Fang, Haiyong Wang, Qian Dang 通讯作者:庄仲滨,李晖,Yushan Yan 通讯单位:北京化工大学,美国特拉华大学 论文速览 氢氧化物交换膜燃料电池(HEMFCs)具有使用低成本的材料的优势,但受到负极氢氧化反应(HOR)动力学缓慢的阻碍。本文报道了一种原子分散的铱...

  6. Vor 10 Stunden · win妹. 接下来播放. 新版Cytoscape3.10.2一键安装cytoHubba cluepedia插件大全网络显示和分析软件, 视频播放量 39、弹幕量 0、点赞数 0、投硬币枚数 0、收藏人数 0、转发人数 0, 视频作者 win妹, 作者简介 ,相关视频:新版Cytoscape3.10.1一键安装cytoHubba插件大全网络显示和 ...

  7. Vor 10 Stunden · 珀金(Perkin)反应. 珀金反应方程式. 芳醛与含α-H的酸酐在碱催化下发生亲核加成反应,然后脱去一分子羧酸,生成?,?-不饱合芳香酸的反应。