Results 1 to 10 of about 282 (40)
Zhongguo youzhi, 2022 为了优化脂肪酰乙醇胺的制备工艺，以油酸甲酯和乙醇胺为原料，采用无溶剂法制备油酰乙醇胺，采用单因素实验优化了反应条件。然后以10种脂肪酸甲酯为原料，考察了该反应方法的普适性，并对制备得到的10种脂肪酰乙醇胺的结构进行了表征。结果表明：制备油酰乙醇胺的最佳工艺条件为无溶剂、油酸甲酯与乙醇胺物质的量比1∶ 5、反应温度100 ℃、反应时间15 h，在此条件下油酰乙醇胺产率为76.52%；在最佳工艺条件下考察了反应底物的普适性，得到10种脂肪酰乙醇胺目标化合物，其产率在53%~87%之间，并通过核磁氢谱 ...
李孟昱1,2，陈伟珠2,3，晋文慧2,3，方华2,3，洪专2,3，张玉苍1 LI Mengyu1,2, CHEN Weizhu2,3, JIN Wenhui2,3, FANG Hua2,3, HONG Zhuan2,3, ZHANG Yucang1
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Zhejiang Daxue xuebao. Lixue ban, 2011 建立了阳离子交换-电雾检测器测定CO2吸收液中一乙醇胺、二乙醇胺、N-甲基二乙醇胺的分析方法.实验采用IonPac CS17阳离子交换柱，选用甲酸与乙腈溶液为淋洗液，并考察了色谱柱种类、淋洗液种类与浓度对分离测定有机醇胺的影响.所测3种有机醇胺的检出限分别为0.21、0.04、0.32 µg • mL-1，线性范围在1.0~100 µg • mL-1，相关系数分别为0.999 6、0.999 3和0.999 2，加标回收率为87%~98%.用所建立的方法测定了CO2吸收液中有机胺质量浓度，结果令人满意.
YEMing-li(叶明立), CHENYu(陈郁)
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基于UPLC/Q-TOF MS/MS的芝麻油成分分析Component analysis of sesame oil based on UPLC/Q-TOF MS/MS
Zhongguo youzhi, 2022 为发现芝麻油中新成分，通过UPLC/Q-TOF MS/MS对4种芝麻油甲醇提取液进行检测分析。结果表明：4种芝麻油中共发现143种共同物质，其中正离子模式71种，负离子模式72种。共同物质中鉴定出77种物质，其余66种为未鉴定成分；77种鉴定成分中包括脂肪酸及衍生物（8种）、芝麻素、芝麻林素、硬脂酰胺等12种已知成分，其余65种为新发现成分；新发现成分包括油酸酰胺、棕榈酰胺、亚油酰胺、芥酸酰胺、8-甲基-N-香草基壬酰胺、辣椒酰胺、N-硬脂酰丙氨酸等17种脂肪酸酰胺，十六碳烯酸 ...
董锋1，李子祥1，贾春媚2，孙勇智1，孙兆辉1，宋馨宇1，王茂清1 DONG Feng1, LI Zixiang1, JIA Chunmei2, SUN Yongzhi1, SUN Zhaohui1, SONG Xinyu1, WANG Maoqing1
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Gongye shui chuli, 2012 通过傅立叶红外光谱、旋转挂片法、极化曲线法、交流阻抗法研究了醇胺开环改性聚天冬氨酸的缓蚀性能及缓蚀机理。研究表明,乙醇胺、二乙醇胺、三乙醇胺开环改性PASP中以加入乙醇胺所得改性产物的缓蚀性能最好,缓蚀率达到70.18%。醇胺改性的PASP是一种以抑制阳极为主的缓蚀剂。
和欢芹 +8 more
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Gongye shui chuli, 2013 实验研究了醇胺类有机物的可生物降解性、降解反应动力学及其对活性污泥法的影响。结果表明:乙醇胺的生物降解反应速率常数(k)为0.1550,去除率达到90%以上;二乙醇胺和N-甲基二乙醇胺的生物降解反应速率常数分别为0.0641和0.0539,去除率均达到60%以上;三乙醇胺的生物降解反应速率常数为0.0124,去除率仅为23%。少量N-甲基二乙醇胺的冲击不会对活性污泥法的出水水质造成明显影响,大量冲击虽然会在短期内影响出水水质,但不会对活性污泥法产生不可逆转的破坏作用。
吴颖, 郦和生, 王岽, 王洪英
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Preparation of glucopyranosylamines in the pipeline reactor(管道化制备吡喃葡萄糖胺类化合物)
Zhejiang Daxue xuebao. Lixue ban, 2009 以葡萄糖和有机胺为原料,采用管道化反应器合成了 3种吡喃葡萄糖胺类化合物：N-（2-羟乙基）-β-D-吡喃葡萄糖胺、N-丁基-β-D-吡喃葡萄糖胺和N-环己基-β-D-吡喃葡萄糖胺,收率分别达到94.3%、98.1%和95.7%,所得产品纯度高,色泽好,产品分别通过ESI-MS、IR和1H-NMR进行了表征.并重点研究了N-（2-羟乙基）-β-D-吡喃葡萄糖胺的合成工艺,较优的工艺条件为：甲醇水溶液作为反应溶剂,乙醇胺与葡萄糖摩尔比为1.1,反应温度为70 ℃,反应压力为1.0~2.0 MPa.
WANGShuai(王帅) +3 more
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Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Lignin is a natural non‐toxic polyphenolic macromolecule, which shows inherent antioxidant and broad‐spectrum antibacterial activities. However, due to the low content and the high bond dissociation energy of phenolic hydroxyl groups (Ar‐O·H), its antioxidant and antibacterial activities are relatively weak, which limits its application as a ...
Meiling Han +10 more
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Veterinary Dermatology, Volume 36, Issue 6, Page 723-787, December 2025.Hyperkeratosis of (a) the footpads and (b) the nasal planum. ABSTRACT Background Canine leishmaniosis (CanL) due to Leishmania infantum remains common, and veterinarians do not always follow scientifically sound approaches for diagnosis, treatment and prevention. Objectives To provide consensus guidelines for diagnosis and evidence‐based guidelines for
Manolis N. Saridomichelakis +9 more
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Gongye shui chuli, 1999 低硬度、强腐蚀性高温水的腐蚀问题是一个较难解决的问题。试验发现在一个由HEDP、Zn2+等常用水处理剂组成的复合配方中，加入少量的磷酸醇胺能极大地提高复合药剂的缓蚀性能。磷酸醇胺本身亦有很好的缓蚀性能，且与HEDP、Zn2+等常用水处理剂有明显的协同缓蚀作用。作者还介绍了磷酸醇胺的制备方法。
吴宇峰 +3 more
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Topical and transdermal botanical formulations of the Chinese pharmacopoeia—A review
Phytotherapy Research, Volume 38, Issue 9, Page 4716-4735, September 2024.Abstract In pharmaceutics, ingredients are classified as active ingredients and excipients. In topical/transdermal phytomedicines, an ingredient may serve both functions. Published information on these dual‐purpose ingredients and their pharmacological relevance is limited.
Jingyi Gu +3 more
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