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Tumor Markers;Long March:From Prototype to Clinical Use

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Tumor Markers;Long March:From Prototype to Clinical Use

Organic acids and inorganic anions in bayer liquors by ion chromatography after solid-phase extraction

2000全国肿瘤学术大会

作者： Anna Meng-ai Zhou M.D. Ph.D.bayer corporation TarrytownNYUSA

＜正＞Tumor markers,long journey from prototype to clinical use includes testingfeasibility of the prototype and optimizing industrial process *** validation and clinical evaluation of threemanufacturing lots with pre- marketing approval granted by FDA,tumor markersare available for clinical *** focus of this presentation is

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Journal of Central South University of Technology 2007年第2期14卷 191-195页

作者：钟付金陈晓青张树朝李跃平 School of Chemistry and Chemical Engineering Central South University Zhengzhou Research Institute China Aluminum Corporation

A method for the simultaneous separation and determination of organic acids and inorganic anions in bayer liquors was developed by gradient ion chromatography with suppressed conductivity detection. Formate, acetate, propionate, oxalate, succinate, glutarate, fluoride, chloride and sulfate were separated and determined in 33 min. The samples were pretreated with solid-phase extraction, which has high selectivity for removing a large number of metallic ions in the bayer liquors, and filtered with a 0.45 μm filter membrane before being injected into the ion chromatographic system. The separation of six organic acids and three inorganic anions was achieved on an IonPac AS11-HC column with KOH as the eluent, and the detection was performed by a conductivity detection mode. No interference is found in the presence of fluorate, chlorate and sulphate when organic acids are determined. The calibration graphs of peak area for all the analytes are linear over a wide range. The relative standard derivation of the peak area of analytes is less than 2.14%. Under optimum conditions the detection ranges from 0.2 to 100.0 mg/L. The average recoveries of the added standards are between 94.3% and 102.8%.

关键词：拜尔法母液有机酸无机阴离子固相抽提离子色谱法铝

Behavior of silicon-containing minerals during bayer digestion

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Transactions of Nonferrous Metals Society of China 2010年第S1期20卷 1-9页

作者：赵清杰杨巧芳陈启元尹周澜吴争平殷振国 Zhengzhou Research Institute Aluminum Corporation of China Limited School of Chemistry and Chemical Engineering Central South University Shenzhen Herewin Technology Co. Ltd

Digestion behaviors of several single silicon-containing minerals including kaolinite, illite and pyrophyllite in aluminate solution were investigated. The result shows that the digestion rates of kaolinite, illite and pyrophyllite in aluminate solution were influenced by reaction conditions such as temperature. Adopting quantum chemistry theoretical calculation, using CASTEM procedure module, the slab model of kaolinite, illite, pyrophyllite and their ordinary complete cleavage plane (001) were geometry optimized at GGA-PW91 level. The micro-essence of the different reaction activities among kaolinite, illite, pyrophyllite in aluminate solution was opened out. It is found that the reaction activities of kaolinite, illite, pyrophyllite are obviously different and the reaction activity of pyrophyllite is the highest. The Si—O bond strength of illite is the strongest and its Al—O bond strength is comparatively the weakest, so Si in it is the most difficult to be removed. The Si—O bond strength of pyrophyllite is the weakest, so Si in it is relatively easy to be removed. The micro-electron structure of complete cleavage plane and the Si—O bond strength of kaolinite, illite and pyrophyllite are evidently influenced by the existence of OH-, of which the surface character and the reduction of Si—O bond strength of kaolinite are influenced most greatly by OH-. Therefore, the desilication of kaolinite in alkaline solution at relatively low temperature is easier.

关键词： silicon minerals alumina bayer digestion aluminate solution reaction activity behavior

Development of A New Lime Adding Technology in Two-Stream Digestion Process of Diasporic Bauxite

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Journal of Rare Earths 2005年第S1期23卷 642-645页

作者：尹中林 Zhengzhou Research Institute Aluminum Corporation of China Limited. Zhengzhou 450041 ChinaSchool of Material and Metallurgy Northeastern University Shenyang 110004 China

Indirect heating and intensified digestion technology can be applied to reduce greatly the energy consumption in bayer process of diasporic bauxite. A great advantage of two-stream process is to avoid or reduce efficiently serious scaling problem of bauxite slurry on indirect heating surface, which certainly happens in the single stream process and brings about great troubles to the indirect heating. As a result of a great number of experiments and the theoretical analysis, a new lime adding technology for the two-stream digestion process is developed in this paper that lime is added into spent liquor stream instead of bauxite slurry, which is more suitable to the two-stream process of diasporic bauxite. The influences of the new lime addition technology on preheating and digestion process were discussed. It was deduced that the new technology can be used efficiently in the two-stream process of non-diasporic bauxite.

关键词： diasporic bauxite bayer process two-stream process lime addition

从天然提取物或分离部位中以碳酸酐酶II为靶点的抗骨质疏松活性筛选(英文)

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云南植物研究 2003年第6期25卷 724-729页

作者：付祥谭宁华姜立花贾锐锐嵇长久 LANDRO James FEKETE Alexander MUELLER Hartwig HENKEL Thomas 中国科学院昆明植物研究所植物化学与西部植物资源持续利用国家重点实验室云南昆明650204 bayer corporation IRT bayer AG PH-R-EU

目的是以碳酸酐酶II (CAII)为靶点筛选其抑制剂 ,以期寻找抗骨质疏松活性样品。实验是在 96孔酶标板上对来源于 1 78个科、 60 8个属、 1 0 2 0种动植物 2 91 9个提取物或分离部位样品在CA II模型上进行了批量筛选。结果表明在 1 0 μg... 详细信息

目的是以碳酸酐酶II (CAII)为靶点筛选其抑制剂 ,以期寻找抗骨质疏松活性样品。实验是在 96孔酶标板上对来源于 1 78个科、 60 8个属、 1 0 2 0种动植物 2 91 9个提取物或分离部位样品在CA II模型上进行了批量筛选。结果表明在 1 0 μg ml浓度下发现了来源于 40个科、61个属、72个种的 1 0 0个样品有活性 ,其中 5个样品的IC50 小于 2 50 μg ml,2 2个样品的IC50 在 2 51～ 5 0 0 μg ml范围 ,73个样品的IC50 在 5 0 1～1 0 0 0 μg ml范围。通过以上工作我们认为以碳酸酐酶II为分子靶点的体外筛选方法稳定、方便、快速、微量、有效 ,特别适用于天然产物的抗骨质疏松活性筛选。

关键词：抗骨质疏松活性筛选碳酸酐酶Ⅱ 天然产物提取物分离部位

Investigation of the medium calcium based non-burnt brick made by red mud and fly ash: durability and hydration characteristics

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International Journal of Minerals,Metallurgy and Materials 2019年第8期26卷 983-991页

作者： Ying-tang Xu Bo Yang Xiao-ming Liu Shuai Gao Dong-sheng Li Emile Mukiza Hua-jian Li State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China School of Energy and Environmental Engineering University of Science and Technology BeijingBeijing 100083China Railway Engineering Research Institute China Academy of Railway Sciences Corporation LimitedBeijing 100081China State Key Laboratory of High Speed Railway Track Technology Beijing 100081China

Red mud is a type of highly alkaline waste residue produced in the process of alumina smelting by the bayer *** on the idea of medium calcium content,solid wastes such as red mud and fly ash were used to prepare non-burnt bricks;and the mass ratio of CaO/SiO2 was selected in the range of 0.88–*** properties and durability were investigated with a compressive strength test.X-ray diffractometry(XRD),scanning electron microscope(SEM),and Fourier transform infrared spectroscopy(FTIR)techniques were used to characterize the hydration *** environmental performance was analyzed by Inductively Coupled Plasma Mass Spectrometry(ICP).The results indicated that the mechanical properties and the durability were optimal when the mass ratio of CaO/SiO2 was *** hydration products were mostly C–S–H gel,ettringite,Na4Ca(Si10All6)O32·12H2O and Ca3Al2(SiO4)(OH)*** were responsible for the strength development,and the CaO/SiO2 mass ratio of 1.23 had the best polymerized *** results of an environmental performance test showed that the heavy metals in the raw materials were well-solidified in the ***,this paper provides an effective solution for use of solid wastes in building material.

关键词： medium calcium content red mud fly ash non-burnt brick