• There have been calls for public health policy makers to consider both ends of the body mass spectrum when fixing priorities in child health.

    已有人呼吁公共健康政策制定者们,当考虑儿童健康问题时,超重和体重过轻这两个极端都应该优先考虑。

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  • The results of mass spectrum analysis are discussed.

    讨论了质谱分析结果。

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  • A primary measurement of mass spectrum on Tokamak KT-5 is presented.

    本文介绍了KT—5托卡马克装置质谱测量的初步结果。

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  • Second, aimed at the ionization and dissociation mass spectrum of trimethylamine.

    针对三甲胺的电离解离质谱。

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  • Accurate position of mass spectrum peak was ascertained through mass calibration for instrument.

    对仪器进行质量校正,以确定正确的质谱峰位置。

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  • The highest concentration of mercury was found in the antennal glands by mass spectrum analysis.

    质谱分析表明,触角腺中汞的含量最高。

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  • Thermal degradation of polystyrene was investigated with thermogravimetry-mass spectrum analysis (TG-MS).

    采用热重质谱法研究了聚苯乙烯的热降解过程。

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  • The compound structure is verified by melting point, IR, NMR, element analysis, mass spectrum and optical rotation.

    所得最终产品经熔点、核磁、红外、元素分析、质谱和旋光度分析,证明与预期结构相符。

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  • Gas phase chromatography, mass spectrum and infrared spectrum are used to characterize the novel silanes structures.

    应用气相色谱质谱和红外光谱表征了它们的分子结构。

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  • METHODS Gas chromatography mass spectrum(GC MS) was employed to detect the concentration of 3 MCPD in the blood after ig.

    方法采用毛细管气相色谱质谱(GCMS)联用法测定大鼠血液中3MCPD的含量。

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  • The fracture manner of PPO was obtained through analysing some fragment peaks of compounds in the second - order mass spectrum.

    并在二级质谱中通过对一些化合物碎片峰的解析,得到了PPO的裂解方式。

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  • In the course of analyzing the full-scan mass spectrum, the compounds with molecular weight 548 and 396 are founded to be never reported.

    在质谱全扫描图的分析过程中,发现了分子量分别为548和396的尚未见报道的成分。

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  • Phase distributions of heavy metals in pyrite were analyzed by inductively coupled plasma mass spectrum with sequential extraction procedure.

    以分级提取-电感耦合等离子体质谱考察了黄铁矿中重金属的相态分布。

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  • With gas chromatographic and mass spectrum (GC-MS) analysis technology, the chemical composition of biomass tar and its distillations were analyzed.

    主要采用色谱-质谱联机(GC - MS)成分分析法对生物质焦油及其馏分试样进行成分分析。

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  • A number of data show that the he mass spectrum detection technique is the only way to meet the requirements of "no-stop" of the thermal power plants.

    大量数据证明,氦质谱检漏技术是满足火力发电厂“不停机”的真空系统检测的唯一方法。

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  • Steranes and terpanes exist in saturated hydrocarbon component of oil and source rock, and they are usually identified by gas chromatogram-mass spectrum.

    甾萜类化合物存在于原油和生油岩的饱和烃组分中,通常用色谱-质谱法鉴定。

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  • Constant conductance method USES partial pressure measurement technology, which has no strict request to outgassing rate of mass spectrum analysis chamber.

    固定流导法采用的是分压力测量技术,对质谱分析室的漏放气率的指标要求不高。

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  • IR spectra, mass spectrum and 1H NMR characterize it. Its surface tension, cmc, emulsification, moistening property, froth property and complex property are tested.

    采用红外、质谱、核磁氢谱对正辛基聚葡萄糖苷进行了表征,并对其表面张力、临界胶束浓度、乳化性能、润湿性能、泡沫性能和复配性能进行了测试。

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  • There are obvious difference between the two 2D gels, but the different protein spots are not identified by mass spectrum, so the tumor special protein is not found.

    肿瘤患者脑脊液和正常对照脑脊液双向电泳图谱有明显差别,但是本实验尚未对这些差异蛋白进行质谱鉴定,所以未找出肿瘤特异蛋白。

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  • A new method for determination of melamine in milk powder and milk products by gas chromatography-mass spectrum with selected ion monitor(GC-MS/SIM) was established in this paper.

    采用气相色谱-质谱(GC-MS)分析技术,选择离子检测法(SIM),开发出一种准确可靠、灵敏度高的测定奶粉及奶制品中三聚氰胺的新方法。

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  • The volatile components were extracted from leaves of Indocalamus latifolius by simultaneous distillation and extraction, and analyzed by gas chromatography-mass spectrum (GC-MS).

    采用同时蒸馏萃取装置提取箬竹叶的挥发性成分,然后经气相色谱-质谱联用技术对挥发性成分进行分离鉴定。

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  • However, the non-mass spectrum interference, enhancement effects of organic reagent and quantitative calibration technique of solid microanalysis are "hot" topic in ICP-MS and LA-ICP-MS.

    在这些ICP - MS及其联用技术中,非质谱干扰、有机介质的增敏效应、固体微区分析的定量校正技术等基本的理论与应用研究一直是研究的热点问题。

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  • In order to reveal the aging mechanism, the analyses of infrared attenuated total reflection (ATR), mass spectrum (MS) and pyrolysis gas chromatograph-mass spectra (PYGC-MS) were performed.

    利用红外光谱(ATR)、质谱(MS)及裂解气相色谱质谱(PYGC MS)等方法分析了硅橡胶老化机理。

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  • The structures and compositions of the purified petroleum acids were characterized by using infra-red spectrum, nuclear magnetic resonance and negative-ion electrospray ionization mass spectrum.

    通过红外光谱、核磁共振和负离子电喷雾质谱三种表征技术鉴定了原油中的石油酸结构和组成。

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  • The method including the process of extraction chromatography and the mass spectrum measurement for the exact analysis of micro neptunium in the existence of large quantity of uranium is established.

    建立了准确测定常量铀中微量镎的方法。方法包括萃取色层法分离和质谱法测量。

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  • This essay introduces the theory and method of helium mass-spectrum leak detection for vacuum system of condenser.

    本文系统地介绍了凝汽器真空系统氦质谱检漏原理和方法。

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  • This essay introduces the theory and method of helium mass-spectrum leak detection for vacuum system of condenser.

    本文系统地介绍了凝汽器真空系统氦质谱检漏原理和方法。

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