色质

Leaves scattered; petiole 3–5 mm, densely spreading rust-colored setose; leaf blade elliptic-ovate, ovate, or oblong-lanceolate, 8–16 × 4–9 cm, papery-leathery, abaxially very densely rust-colored setulose, especially on veins, adaxially bullate, densely shortly setulose, immediately glabrescent, secondary veins 2 pairs arising from base, fine veins distinctly raised abaxially, impressed adaxially, base shallowly cordate to rounded, margin slightly revolute, sparsely dentate,± setiform-ciliate, apex acuminate, caudate, or acute. Inflorescences axillary, racemose or corymbose, 1–4 cm, ca. 10-flowered, densely tomentulose; bracts rhombic-triangular, 5–8 × 4–5 mm, leathery, densely tomentulose.

叶星散 叶柄3-5毫米，密被平展锈色具刚毛；叶片椭圆状卵形，卵形，或者长圆状披针形， 8-16 * 4-9 厘米，纸质革质，背面非常浓密锈色具小刚毛，在脉上的特别是，正面具泡状隆起，具小刚毛的密被短的，立即后脱落，次脉2 对生于基部，清楚的细脉背面突起，正面凹陷，基部浅心形到圆形，花序腋生，总状或伞房状，1-4厘米，约10花，密被被微绒毛；苞片菱形三角形， 5-8 * 4-5 毫米，革质，密被被微绒毛。

Raney nickel catalyst was used in hydrogenation of the turpentine and c-pinane,t-pinane,camphene and isocamphane and some other monoterpane s were determined.

用雷尼镍为催化剂对松节油进行了加氢实验，获得顺蒎烷、反蒎烷、莰烷、异莰烷等单萜烷类化合物，采用气相色谱"反吹、微流控"技术的色谱-质谱分析方法，测得了它们的保留时间和质谱图，为进一步研究原油或抽提物轻馏分中单萜烷类化合物的地球化学意义提供了一些基础性数据。

Methods Proteins and peptides in CSF were separated by two-dimensional gel electrophoresis（2DE） and ultra-performance liquid chromatographer and identified by matrix assisted laser desorption ionization time of flight mass spectrometry（MALDI-TOF-MS） and electrospray ionization to study differential proteomic expression in the cerebrospinal fluid between patients with Demy- elinative disease and with other neurological diseases.

方法以中枢神经系统脱髓鞘疾病患者的脑脊液为研究对象，分别采用固相pH梯度双向凝胶电泳分离总蛋白质，凝胶经银染显色后，用图像分析软件进行比较分析、识别差异表达的蛋白质，离线应用基质辅助激光解析电离飞行时间质谱得到相应的肽指纹图谱；同时用超高压液相色谱分离酶解肽段，在线采用电喷雾四极杆飞行时间质谱鉴定肽段氨基酸序列；搜索数据库鉴定部分蛋白质。

A new method using gel permeation chromatographic cleanup followed by high performance liquid chromatography-tandem mass spectrometry has been established for quantitative determination of Maleic hydrazide,Prowl and butralin residues in tobacco.

建立了用凝胶渗透色谱净化-液相色谱-串联质谱分析烟草中3种抑芽剂残留的方法。卷烟中的待测抑芽剂组分用V∶V=1∶1超声提取后通过凝胶渗透色谱净化；凝胶色谱柱为Biobeads S-X3玻璃柱(50 g，400 mm×25 mm)，流动相为V∶V=1∶1溶液，流速5 mL/min；收集第10~25 min流出的液体用液相色谱色谱-三重四极杆串联质谱仪测定。

GC-MS or LC-MS is a kind of modern,fair chemical analytical technique,which combine higher separation ofChromatography with strong identification of Mass.It was applied in new drug research including concentration determination,impuritycheck,pharmacokinetic,anabolite analysis and so on.The paper reviews their application examples for recent years and shows itsdevelopment future.

气一质联用法和液一质联用法将色谱的高分离性能和质谱的高鉴别特点相结合，组成了较完美的现代分析技术，在新药研究的含量测定，有关物质检查、质量标准制定以及药物动力学研究的代谢物分析、药物及代谢物的体内浓度分布等试验中，成为有力的分析工具，文章综述了近年来色谱一质谱联用在以上领域的应用实例，展示了它的发展前景。

To study the bioactive components from water soluble extract of the Chinese eaglewood, various column chromatography of Chinese eaglewood led to the isolation of ten compounds. Their structures were elucidated as 2,3-bis(3-hydroxyphenyl)- propan-1-ol (1), [(2R,3R)-3-(4-amino-3,5-dimethoxyphenyl)oxiran-2-yl]methanol (2), 8-chloro-4'- methoxy-5,6,7,3'-tetrahydroxy-2-(2-phenethyl)-5,6,7,8-tetrahydrochromone (3), 4'-methoxy-5,6,7,3'-tetrahydroxy-2--5,6,7,8-tetrahydrochromone (4), the isomer of 4 (5), 4'-methoxy-5,6,7,8-tetrahydroxy-2-(3'-hydroxyphenethyl)-5,6,7,8- tetrahydrochromenone (6), 4'-methoxyisoagarotetrol (7), 6-hydroxy-2-(2-hydroxy-2- phenethyl)-chromone (8), 6-hydroxy-2-(2-phenethyl)-chromone (9), 6-hydroxy-2-(4'- hydroxy-2-phenethyl)-chromone (10), and Guaiacylacetone (11) by means of spectral analysis and comparison with references.

为了进一步发现沉香中具有生理活性的化学成分，本文对国产沉香的水溶性成分进行了研究，从中分离得到11个化合物，通过红外、紫外、质谱、核磁共振(1H-NMR， 13C-NMR， COSY， HSQC， HMBC， ROESY)波谱解析，分别鉴定为：2，3-二(3-羟基苯基)-丙-1-醇(1)，[(2R，3R)-3-(4-氨基-3，5-二甲氧苯基)-2-氧化烯基]甲醇(2)，8-氯-4'-甲氧基-5，6，7，3'-四羟基-2-(2-苯乙基)-5，6，7，8-四氢色原酮(3)，4'-甲氧基-5，6，7，3'-四羟基-2-(2-苯乙基)-5，6，7，8-四氢色原酮(4)，化合物3的差向异构体(5)，4'-甲氧基-5，6，7，8-四羟基-2-(3'-羟基-2-苯乙基)-5，6，7，8-四氢色原酮(6)，4'-甲氧基异沉香四醇(7)，6-羟基-2-(2-羟基-2-苯乙基)色原酮(8)，6-羟基-2-(2-苯乙基)色原酮(9)，6-羟基-2-(4'-羟基-2-苯乙基)色原酮(10)和Guaiacylacetone (11)。

Methods by using a broad pH range column(Gemini NX C18,4.6mm×150mm,5μm),basic mobile phase which was[H_2O-ammonia-glacial acetic acid] (96:3.6:0.4)-methanol,the related substances in etimicinsulfate were separated and detected by electrospray ionization and positive ion monitoring,the ESI ion source condition was following: temperature is 350℃,nebulizing pressure is 50 psi,dry gas flow is 10 L /min.some related substances in etimicinsulfate were identified by comparing the retention time in chromatography,~+ spectrum and MS~2 spectrum with reference substances\',the others which haven\'t reference substances were identified or speculated by analyzing their MS~2 fragmentation with the help of a rule summarized from the MS~2 fragmentation of gentamicin C1a,micronomicin and etimicin.Results nineteen related substances in etimicinsulfate were separated and detected.

方法利用宽pH范围的Gemini NX C18(4.6mm×150mm，5μm)色谱柱，在碱性条件下，以[水-氨水-冰醋酸(96：3.6：0.4)]-甲醇(70：30)为流动相，直接分离各组分；并用HPLC-ESI-MS~2检测样品中各组分，质谱条件：ESI离子源，离子源温度350□，雾化室压力50 psi，干燥气流速10 L/min，正离子检测方式；对有对照品的有关物质采用比对有关物质与对照品的色谱保留时间、准分子离子的质荷比及二级质谱方法进行鉴定，无对照品的有关物质，则是先通过解析庆大霉素Cla、小诺霉素、依替米星的二级质谱，对该类化合物的二级质谱裂解规律进行归纳，并以此推测未知新化合物进行结构，再用推测的结构对二级质谱进行解析，如所有的碎片离子均合理解释，表明推测合理。

The natural red yolk of duck's eggs is produced by the laying duck in the lake areas in southward of China.

采用薄层色谱、高效液相色谱质谱质谱及高分辨电子轰击质谱方法，分离鉴定了天然红心鸭蛋蛋黄中红色素的分子组成和结构。

Moreover,the machine is installed with automatic fabric press frame with single operator and higher efficiency.

最新研制的一件围定型机，采用双模定位，有效克服了以往一件围定型机因钢圈和内杯的移位造成大量原材料浪费，还使布料减少了定型时间，更能满足产品所需的手感和色质；该机还配置了自动压布框，操纵更灵活，效率更高。

Two novel well-defined star-graft copolymers with poly as main chain are successfully prepared by combination of anionic and atom transfer radical polymerization. Anionic copolymerized 2,5-epoxypropyl-1-ethoxyethyl ether with EO by initiation of mixture of diphenylmethylpotassium and polyol [1,1,1-trispropane or pentaerythritol] to give the well-defined three-arm star poly and four-arm star poly.

用核磁共振(~1H NMR)、红外光谱、元素分析、气相色谱—质谱、凝胶渗透色谱和基质辅助激光解吸附电离飞行时间质谱(MALDI-TOF-MS)等手段对中间产物及最终产物进行了详细地表征，证明了这种合成聚醚为主链的接枝共聚物的方法是可行的，并且是成功的。2。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐