查询词典 ir
- 与 ir 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Three novel rigid compounds 3, 6-bis[2-(4-pyridylethenyl]-9-ethylcarbazole (L~1), 3,6-bis[2-(2-pyridyl)ethenyl]-9-ethylcarbazole (L~2), 3,6-bis[2-(4-pyridyl)ethenyl]-9 -ethylpyridylcarbazole (L~3) were successfully synthesized by Heck reaction, which were fully characterized by elemental analyses, NMR, MS, IR spectra and single X-ray diffraction analysis.
利用Heck偶联反应,成功地合成了三种新型刚性的吡啶基咔唑类化合物:3,6-二[2-(4-吡啶基)乙烯基]-9-乙基咔唑(L~1),3,6-二[2-(2-吡啶基)乙烯基]-9-乙基咔唑(L~2)和3,6-二[2-(4-吡啶基)吡啶基]-9-乙基吡啶基咔唑(L~3),通过元素分析、核磁共振谱、质谱、红外光谱和单晶X-射线衍射等分析手段确证了它们的结构。
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While presenting the "Family-friendly Frim" award, Ibrahim, Singapore's minister for community development, said today :"We have started to see senior corporate CEOs are changing the ir way of thinking in terms of benefits of work and life."
新加坡社会发展部长伊布拉欣今天在颁发「家庭友好企业」奖时说:「我们开始看到企业高级行政主管对工作生活作法好处的思维出现转变。
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A novel supramolecular complex, [Cu2]CH3OHH2O (fum=fumarate dianion, dpphen=4, 7-diphenyl-1, 10-phenanthroline), has been prepared from the reaction of bidentate ligand, fumarate with CuCl2, and were characterized by element analysis, IR, thermal analysis and X-ray diffraction technique.
利用螯合配体4,7-二苯基-1,10-邻菲罗啉与反丁烯二酸钠及铜盐反应合成了一种新型超分子配合物[Cu2]CH3OHH2O(fum=反丁烯二酸根,dpphen=4,7-二苯基-1,10-邻菲罗啉)。通过元素分析、红外光谱、热分析和X射线单晶衍射等技术对其进行了表征。
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By means of GPC,IR,GC-MS,~(13)CNMR,~1HNMR,Methylation analysisetc,structural properties of PST-1 were identified as follows:The Mwof PST-1 was 3.44×10~6 Da and its optical rotation was _D~(20)=+0.110°(c0.1, H_2O); PST-1 constituted 8 simple sugars and the molar ratio was 2,4-Dimethoxy-Mannose:Rhamnose:Ara-binose:Xylose:Galactose:D-Galacturonic acid:Mannose:D-glucuronic acid=2%:5%:24%:9%:3%:1%:46%:10%;The chief bone of PST-1 was 1,3,6-linked-β-D-Man residue and the side chains contained Furanoid and Pyranoid residues.
结合GPC、旋光度测定、IR、GC-MS、~(13)CNMR、~1HNMR、高碘酸氧化法、Smith降解以及甲基化方法等分析测试方法,得到PST-1的单糖组成及结构表征,实验结果如下:红豆杉多糖PST-1是重均分子量为3.44×10~6 Da的支链多糖,旋光度为20D=+0.110~0(c0.1,H_2O);PST-1单糖组成为:2,4-Dimethoxy-Mannose:Rhamnose:Arabinose:Xylose:Galactose:D-Galacturonic acid:Mannose:D-glucuronic acid=2%:5%:24%:9%:3%:1%:46%:10%;PST-1的骨架结构为:具有1,3,6-连接的β-D-甘露糖残基骨架,侧链分枝包括非还原末端的呋喃型α-L-阿拉伯糖残基、吡喃型α-L-阿拉伯糖残基、β-D-木糖残基、β-D-甘露糖残基、2,4-二氧甲基-β-D-甘露糖残基和α-D-葡萄糖醛酸残基;侧链的糖残基也可能存在2,5-二氧-取代呋喃型α-L-阿拉伯糖基、3-氧-取代的β-D-木糖残基、6-氧-取代的α-D-半乳糖醛酸残基、6-氧-取代的α-D-半乳糖残基、4-氧-取代的α-D-葡萄糖醛酸残基和2-氧-取代的α-L-鼠李糖残基,同时后者也可能穿插在主链上。
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Nanosized CPF(Conjugated Polymer of Furfuryl alcohol)/ZnO composite catalyst was prepared through in-situ polymerization and heat conversion. The thermal stability, morphologies, size, structure and optical absorption properties of the CPF/ZnO material were characterized by TG-DTA, TEM, XRD, XPS, IR and UV-Vis techniques.
通过原位聚合-热转化两步法,利用ZnO纳米微粒和糠醇制备出了具有大共轭结构的高分子和ZnO的纳米复合催化材料;用TG-DTA、TEM、XRD、XPS、IR和UV-Vis等技术对其热稳定性、形貌、尺寸、结构及吸光特性等进行了表征,以亚甲基蓝溶液的催化降解研究了该材料在自然光条件下的催化性能。
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Catalytic Synthesis of Methyl Furoate by Peroxhydrogen and Sulphate Acid;2. Using hydrochloric acid as a cheap catalyst,perfume methyl furoate was synthesized from methanol and furoic acid prepared from furfural,and was characterized by GC,IR and 1H-NMR.
从糠醛出发,由制备的糠酸和甲醇反应,在盐酸催化下,合成了香料糠酸甲酯,并用IR、1HNMR、GC等进行了表征;探讨了包括高纯度糠酸的制备在内的反应影响因素,在醇酸物质的量之比为 5∶1、催化剂体积占甲醇体积 13。
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Using hydrochloric acid as a cheap catalyst,perfume methyl furoate was synthesized from methanol and furoic acid prepared from furfural,and was characterized by GC,IR and 1H-NMR.
从糠醛出发,由制备的糠酸和甲醇反应,在盐酸催化下,合成了香料糠酸甲酯,并用IR、1HNMR、GC等进行了表征;探讨了包括高纯度糠酸的制备在内的反应影响因素,在醇酸物质的量之比为 5∶1、催化剂体积占甲醇体积 13.0 %、反应时间 3h的最佳工艺条件下,酯化收率为81 0 %,收率比硫酸法、某些固体超强酸法
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The influence of the structure and property of Jinzhou coker heavy gatch on formation of needle coke was investigated by using elemental analysis, liquid chromatogram, FT-IR spectroscopy and molecular weight determination.
本文利用元素分析、液相色谱、傅立叶变换红外光谱、分子量测定等分析手段,研究了锦州焦化重蜡油的组成结构和性质对生产针状焦的影响,并通过与典型针状焦生产原料——锦州催化裂化油浆的比较,指出了锦州焦化重蜡油用作针状焦原料的不足。
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It contained α-glucosidic bonds by IR analys is.It had no typical absorption of nucleic acid or protein by UV scanning.
它的红外光谱中有典型的多糖吸收峰,并具有α-型糖苷键,紫外扫描无核酸和蛋白特征吸收峰。
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Main monosaccharide were Arabinose, Xylose, Mannose, Glucose and Galactose. The structure of SPG was studied by IR and alkaline β-elimination reaction. It was found that:(1) SFG contains α-glucosidic bonds;(2) the type of the glucosidic bonds was pyranose,(3) the protein was covalently linked with the carbohydrate by 0-glycosyl linkage.
气相色谱分析表明甘薯糖蛋白中糖链部分含有鼠李糖、阿拉伯糖、甘露糖、葡萄糖、半乳糖;红外光谱和汗消去反应表明:甘薯糖蛋白中含有α-糖苷键,糖苷键类型主要为吡喃型;糖与蛋白的肽链之间的连接点类型是O-糖肽键。
- 相关中文对照歌词
- Violeta (Fricote)
- Calentándote
- Que La Dejen Ir Al Baile Sola
- Musica Killa
- Pode Ir
- Déjame Ir
- Vueltas En El Aire
- First Time
- Deixo Você Ir
- Me Gustas Tu
- 推荐网络例句
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However it can often be frust ating for a child when people are unable to pronounce their name.
但它往往可以令人沮丧的一个孩子当人们无法断言他们的名字。
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All these compounds were obtained from this genus for the first time. Compound, 4-cumylphenol, was a new nature product.
所有化合物均为首次从本属海藻中分离得到,其中4cumylphenol为新天然产物。
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But this is unbelievable .too much.
但是这太令人难以置信。