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醚类

醚类的相关文献在1986年到2023年内共计1776篇,主要集中在化学工业、石油、天然气工业、外科学 等领域,其中期刊论文100篇、会议论文5篇、专利文献1671篇;相关期刊82种,包括今日科苑、中华劳动卫生职业病杂志、医学临床研究等; 相关会议2种,包括全国首届恶臭污染测试与控制技术研讨会、全国外科学术会议等;醚类的相关文献由3843位作者贡献,包括刘长令、方云辉、李淼等。

醚类—发文量

期刊论文>

论文:100 占比:5.63%

会议论文>

论文:5 占比:0.28%

专利文献>

论文:1671 占比:94.09%

总计:1776篇

醚类—发文趋势图

醚类

-研究学者

  • 刘长令
  • 方云辉
  • 李淼
  • 关爱莹
  • 李志念
  • 张弘
  • 张小芳
  • 郭元强
  • 蒋卓君
  • 柯余良
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 黄佳
    • 摘要: 致嗅物质是影响饮用水口感的重要因素,成为影响上海市高品质饮用水的关键指标之一。通过对照国内外情况,针对上海市的实际情况,对水中二甲基二硫醚等醚类致嗅物质检测方法进展进行研究,上海市地方标准使用固相微萃取结合气质联用技术可准确、快速检测水中嗅味物质,满足上海市实际需求。
    • 吕雅娟; 王春艳; 贺文珍
    • 摘要: 以4-(辛/癸/十二烷氧基)甲基吡啶和1,4-二溴丁烷为原料,制得含有醚键的季铵盐双子表面活性剂:溴化-1,4-二[4-(辛/癸/十二烷氧基)甲基吡啶]丁烷,记作QAE n-4-n(n=8,10,12)。通过1H NMR、^(13)C NMR和MS进行结构表征,并对表面张力、泡沫性能、杀菌性能等进行研究。结果表明:室温下QAE12-4-12的CMC为9.1×10^(-2)mmol·L^(-1),具有良好的表面活性;QAE10-4-10则杀菌效果显著,最小抑菌浓度均小于10mmol·L^(-1),最小杀菌浓度在4~20mmol·L^(-1)之间。该系列醚类季铵盐合成方法简单、表面活性好,杀菌效果明显,具有进一步研究的价值。
    • 摘要: 苯乙烯是大宗化工产品,研究对苯乙烯的一步双官能团化具有很大价值。中国科学院理化技术研究所从2012年开始探索,实现了苯乙烯与脂肪族醇、酮、腈高值转化。该课题组最近发现苯乙烯与开链的醚类可以实现高值转化,构筑双官能团化的药物中间体。
    • 何崇信; 肖静波; 宛新建
    • 摘要: 背景:对于存在手术禁忌证的胆囊结石患者,溶石治疗是一种可选方法,因此寻找合适的低毒性溶石药物具有重要临床意义.目的:比较不同醚类药物对胆囊结石的溶石效果及其生物安全性.方法:分别以相对分子质量依次增加的醚类药物甲基叔丁基醚(MTBE)、乙基叔丁基醚(ETBE)、乙二醇单叔丁基醚(ETB)和二乙二醇单叔丁基醚(DETB)行体外溶石实验,并以CCK-8实验检测四者对人正常肝细胞株LO2的增殖毒性.分别予30只Sprague-Dawley大鼠上述药物灌胃2周,观察血清生化指标和肝、肺、肾、胃、十二指肠、空肠组织病理学改变.结果:MTBE的体外溶石效果最为显著(P<0.05),ETB和DETB的溶石效果虽弱于ETBE(P <0.05),但仍较显著.CCK-8实验显示ETBE增殖毒性最强(P<0.05),ETB与DETB增殖毒性无明显差异(P>0.05).除MTBE、ETBE和ETB可略升高血清AST水平(P<0.05)外,四种药物对模型大鼠血清生化指标和各脏器组织病理学均无明显影响.结论:相对分子质量的增加虽会部分降低醚类药物的溶石效果,但同时极大地提高了药物的生物安全性.%Background:Dissolution therapy is used as an alternative to surgery in patients with gallbladder stone and contraindication for surgery.Finding medicines with optimal litholysis effect and low cytotoxicity is of great importance in clinical practice.Aims:To study the litholysis effect and biological safety of different ethers for gallbladder stones.Methods:Methyl tertiary-butyl ether (MTBE),ethyl tertiary-butyl ether (ETBE),ethylene glycol mono-tert-butyl ether (ETB),and di (ethylene glycol) tert-butyl ether (DETB),arranged by the order of relative molecular weight,were used to dissolve the gallbladder stones in vitro.Normal human liver cell line LO2 was treated with the above mentioned four ethers,and the cell viability was assessed by CCK-8 assay for analyzing the proliferative toxicity.Thirty Sprague-Dawley rats were administered intragastrically with the four ethers for 2 weeks,and then the serum biochemical indices and histopathology of liver,lung,kidney,stomach,duodenum and jejunum were examined.Results:The litholysis effect of MTBE was the most prominent (P < 0.05);that of ETB and DETB were weaker than ETBE (P < 0.05) but still had a substantial effect.CCK-8 assay showed that ETBE was the most toxic ether (P < 0.05),and the proliferative toxicity of ETB and DETB was similar (P > 0.05).Except for the slightly increased serum AST in MTBE,ETBE and ETB groups (P < 0.05),the four ethers had no significant impact on serum biochemical indices and histopathology of multiple organs of the model rats.Conclusions:The increase of relative molecular weight of ether may reduce its litholysis effect,but meanwhile its biological safety is increased.
    • 张传青; 王欢; 卢明军
    • 摘要: [Objective]To evaluate the clinical application value of sevoflurane inhalation anesthesia in fast-track infant operation.[Methods]A total of 68 children undergoing fast-track infant operation were divided into two groups by odd and even numbers,with 34 cases in each group.The observation group was given mask in-halation of sevoflurane for induction while the control group was given ketamine anesthesia induction.The an-esthesia induction time,postoperative recovery time,mean arterial pressure (MAP),heart rate (HR),SpO2 and the incidence of adverse reactions were recorded and compared.[Results]The anesthesia induction time and postoperative recovery time of the observation group were significantly shorter than those of the control group (P <0.05).After the induction,MAP and HR of the observation group were significantly lower than those of the control group (P <0.05).The incidence rates of nausea and vomiting,increased secretions,laryngeal spasm in the observation group were significantly lower than those in the control group (P <0.05).[Conclu-sion]Sevoflurane inhalation anesthesia has the advantages of short induction time,quick postoperative recovery and little effect on hemodynamics in fast-track infant operation.It is safe and worthy of clinical use.%[目的]观察七氟醚吸入麻醉在小儿短小手术中的临床应用价值.[方法]68 例小儿短小手术患儿按照单双号平均分配的方法分为两组,每组 34 例,观察组给予面罩吸入七氟醚诱导,对照组给予氯胺酮麻醉诱导,观察比较两组患儿麻醉诱导时间、术后苏醒时间、平均动脉压(MAP)、心率(HR)、SpO2及不良反应发生情况.[结果]观察组患儿麻醉诱导时间和术后苏醒时间较对照组均显著缩短,且差异有显著性(P <0.05).诱导后观察组患儿 MAP、HR指标较对照组明显降低,且差异均有显著性(P <0.05),观察组恶心呕吐、分泌物增多、喉痉挛等不良反应发生率显著低于对照组(P <0.05).[结论]七氟醚吸入麻醉在小儿短小手术中具有诱导时间短、术后苏醒快、血流动力学影响小,疗效安全等优点,值得临床推广使用.
    • 李安; 李顺; 温永向
    • 摘要: 采用2种不同类型、不同分子质量的聚醚大单体,通过调整主链长度使合成的醚类与酯类聚羧酸减水剂(PC)具有最佳分散性能,对比研究了醚类PC和酯类PC对水泥吸附、水化放热、水泥净浆分散性能及混凝土性能的影响.结果表明,醚类PC为短主链长侧链梳形结构,酯类PC为长主链短侧链梳形结构;醚类PC在水泥颗粒表面的吸附量高于酯类PC,而对抑制水泥净浆水化放热、水泥分散作用则是酯类PC优于醚类PC.在混凝土应用中,酯类PC比醚类PC具有更高的减水率,而醚类PC在坍落度及扩展度保持性方面优于酯类PC.
    • 何永冠
    • 摘要: 【目的】探讨舒芬太尼联合右美托咪定预防小儿七氟醚全麻苏醒期躁动的效果。【方法】本院拟行七氟醚全麻手术的患儿60例,分为两组,各30例,观察组使用七氟醚复合舒芬太尼联合右美托咪定,对照组使用七氟醚复合右美托咪定,比较两组患者不同时间点的平均动脉压(MAP)和心率(HR)的差异及麻醉情况。【结果】两组患者在不同时间点的 MAP 和 HR 相比较差异均无显著性(P >0.05);观察组患者在静脉泵药后的呼气末七氟醚浓度(2.08±0.35)%低于对照组(2.65±0.28)%(P <0.05)。观察组患者术后躁动评分表(PAED)评分(7.44±2.16)分低于对照组(9.69±2.32)分。观察组患者术后躁动发生率为20.0%(6/30)低于对照组53.33%(16/30),且差异有显著性(P <0.05)。两组的苏醒时间和术后不良反应发生率相比较差异无显著性(P >0.05)。【结论】在保证麻醉效果和苏醒时间相同的情况下,舒芬太尼联合右美托咪定能减少七氟醚的用量,减轻小儿七氟醚麻醉苏醒期躁动。%Objective]To study the effects of Sufentanil combined with Dexmedetomidine in the preven‐tion of restlessness during the recovery period of general anesthesia with sevoflurane in children .[Methods]Sixty cases of sevoflurane general anesthesia surgery in our hospital were divided into the observation group and control group ;each group had 30 cases .The observation group was given Sufentanil and Dexmedetomidine in addition to sevoflurane ,and the control group was only given dexmedetomidine with the sevoflurane .The differences of mean arterial pressure (MAP) and heart rate (HR) between the two groups were compared at different time points .[Results]There was no significant difference in MAP and HR between the two groups at the different time points ( P > 0 .05) .The sevoflurane concentration in the observation group at T 3 (after intra‐venous infusion of medicine) was (2 .08 ± 0 .35) ,which was lower than that of the control group (2 .65 ± 0 .28) ( P 0 .05) .[Conclusion]Sufentanil combined with Dexmedetomidine can reduce the dosage of sevoflurane and rest‐lessness during the recovery period of general anesthesia with sevoflurane in children and have the same anes‐thetic effect and recovery time .
    • 王国武; 李超; 胡啸玲
    • 摘要: Objective To investigate the effects of different concentrations of sevoflurane on proliferation and invasion in human prostate cancer PC3 cell line. Methods The cells were randomly divided into four groups:control group and three sevoflurane groups (exposed to 1.7%, 3.4%and 5.1%sevollurane for 2, 4 and 6 h respectively). The ability of prolifera-tion and invasion of PC3 cells were evaluated by MTT and Transwell invasion assays. Western blot analysis was performed to detect the protein expression of hypoxia inducing factor 1 alpha (HIF-1α) in PC3 cells. Results The ability of proliferation and invasion of PC3 cells was significantly increased after being exposed to sevollurane for 2, 4 and 6 h (PTreat 2 group>Treat 1 group (PTreat2组>Treat1组(P<0.05).结论 七氟醚可增强人前列腺癌PC3细胞的增殖与侵袭能力,且随着时间和浓度变化细胞的增殖与侵袭能力逐渐增强,其机制可能与上调HIF-1α的表达有关.
    • 樊文杰
    • 摘要: 笔者研究了大量官能团位置异构书写,发现官能团异构书写方法基本上分为两大类。下面谈谈笔者的一些经验。第一种类型为含有一价基官能团(-R)的有机物,通式为CnH2n+1R。此类物质可看成是官能团R取代了烃CnH(2n+2)中的一个H,烃中氢的种类即为同分异构的数目,此法称为取代法。
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