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Quantitative Analysis of Non-Crystalline and Crystalline Solids in Blast Furnace Slag

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Journal of Iron and Steel Research International 2011年第1期18卷 8-10页

作者： WANG Hai feng zhang chun-xia QI Yuan hong State Key l.aboratory ot Advanced Steel Processes and Products Central Iron and Steel Research Institute Beijing 100081 China

The granulation of blast furnace slag （BFS） with water quenching treatment has some disadvantages, such as high water consumption and difficulty for recovery heat. So developing a new dry granulation technique to treat BFS is very important. The applicability of BFS directly depends on the content of non-crystalline solids in the slag after treatment. So it is of theoretical and practical significance to analyze the content of non-crystalline solids in the slag quantitatively and simply. Metallographical test is mainly adopted to quantify the non-crystalline in BFS so far with the shortages such as complex sample, difficult determination, ect. The diffraction intensity of non-crystalline is proportionate to the content of non-crystalline in BFS, ~ray diffraction method was adopted to quantify the noncrystalline and the crystalline solids in BFS. The quantitative coefficient between the crystalline and the non-crystalline solids of BFS is 0.70 of BFS whose main composition （mass percent, %） is： CaO 38.2, SiO2 35.7, Al2Oa 16.3, and MgO 8.3. The relative error of X-ray diffractometer for quantitatively analyzing non-crystalline content of BFS is less than 1%.

关键词： blast furnace slag non crystalline crystalline quantitative analysis

Synthesis of micron-sized hollow silica spheres with a novel mesoporous shell of MCF

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Chinese Chemical Letters 2009年第7期20卷 852-856页

作者： An feng zhang Yong chun zhang Na Xing Ke Ke Hou Jing Wang Xin Wen Guo State Key Laboratory of Fine Chemicals School of Chemical Engineering Dalian University of Technology Dalian 116012 China

Micron-sized hollow silica spheres whose shells are made up of mesocellular silica foams （MCFs） have been synthesized by one-pot sol-gel method in benzene/water/P123 emulsion. The material is characterized with SEM, TEM, BET and ^29Si MAS NMR. The results show that the MCFs of the unique shell of hollow silica spheres were connected by large windows with a narrow distribution of - 10 nm in diameter, the inner space of the hollow sphere is accessible. And the formation mechanism of the hollow silica spheres is proposed. C 2009 Xin Wen Guo. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

关键词： Hollow spheres MCF Mesoporous material

Synthesis of a new aromatic diacid containing pyridine ring and related polybenzimidazole

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Chinese Chemical Letters 2010年第8期21卷 976-978页

作者： Tao Ma Yan feng Li Shu Jiang zhang feng chun Yang Chen Liang Gong Jiu Jiang Zhao College of Chemistry and Chemical Engineering State Key Laboratory of Applied Organic Chemistry Institute of Biochemical Engineering & Environmental TechnologyLanzhou UniversityLanzhou 730000China

A new aromatic diacid monomer containing pyridine unit,4-phenyl-2,6-bis[4-（4-carboxyphenoxy） phenyl]pyridine 3,was successfully synthesized in three steps,starting from *** corresponding pyridine-containing polybenzimidazole was prepared via polycondensation of 3 with tetraaminodiphenyl ether（TADE） in poly（phosphoric acid）（PPA）.The resulting polybenzimidazole exhibits excellent solubility,good thermal stabilities and high thermal resistance.

关键词： Polybenzimidazoles Pyridine-containing diacid monomer Synthesis Thermal stabilities

Effects of Solvents on Extraction of Effective Components from Cell Wall Tissues of Chinese Traditional Medicines

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Chemical Research in Chinese Universities 2009年第6期25卷 899-903页

作者： LIU Cheng-bai TIAN Luo YU Zhen-xiang zhang feng-chun CHEN Xia College of Life Science Jilin University Changchun 130021 P. R. China Department of Respiratory Medicine First Hospital of Jilin University Changchun 130021 P. R. China

The effects of different Chinese traditional medicines were solvents on the extraction of effective studied by the histochemical methods, components from the cell wall tissues of such as the bare-handed section, swelling ratio, paraffin section, IR spectrum and cell wall component analysis. The results show that the ethanol-alkali solvent could increase the swelling ratio as well as the swelling speed. The effective components of cell wall tissues extracted by ethanol-alkali solvent become loose shown by the paraffin section. According to the IR spectrum analysis and the results of cell wall tissue component analysis, it was found that the ethanol-alkali solvent could decrease the contents of pectin and hemicellulose in the cell wall to make the wall broken, and therefore the effective components can be extracted easily by the solvent and the extraction rate is increased.

关键词： Solvent Cell wall Paraffin Section Infrared spectrometry

Preparation, Characterization, and in vitro Release of Biodegradable Erythromycin-gelatin Microspheres

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Chemical Research in Chinese Universities 2008年第2期24卷 196-199页

作者： WANG Fei LIU Pai JIANG Dan LIU Cheng-bai zhang feng-chun CHEN Xia College of Life Science Jilin University Changchun 130021 P. R. China College of Life Science Beihua University Jilin 132013 P. R. China

Blank and erythromycin-loaded gelatin microspheres were successfully fabricated via emulsion chemical- crosslinking technique. The surface morphology of the microspheres was characterized by scanning electron microscope（SEM） and optical microscope. The results show that the microspheres were spherical and smooth. The particle average size of erythromycin-loaded microspheres was found to be 20.6 μm, with a high purity of more than 90% and with a good dispersibility. The microspheres could be obtained in a high yield. Erythromycin released from the microspheres was monitored in buffer and artificial body fluid at 37 ℃. Average drug content was 27.2%, and erythromycin-loaded gelatin microspheres showed good release profiles with a nearly constant release during 4-8 h in artificial body fluid in vitro degradation studies. These gelatin microspheres are useful for studying and developing various drug-delivery systems.

关键词： In vitro degradation Gelatin Erythromycin Microsphere

Propagating subduction initiation of the Caroline Plate at the Mussau Trench

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Science China Earth Sciences 2025年第1期68卷 253-269页

作者： chun-feng LI Yongkang DENG Tao WU Dongdong DONG Guoliang zhang Jiazheng zhang Yutao LIU Yaqing LI Fugui TANG Lulu zhang Department of Marine Sciences Zhejiang University Laboratory of Marine Mineral Resources Laoshan Laboratory Key Lab of Marine Geology and Environment Institute of Oceanology Chinese Academy of Sciences Key Lab of Ocean and Marginal Sea Geology South China Sea Institute of Oceanology Chinese Academy of Sciences Science & Technology on Integrated Information System Lab Institute of Software Chinese Academy of Sciences

New seismic imaging from the Mussau Trench confirms that, under horizontal compression on an oceanic plate boundary, it is within the young and weak oceanic plate that a trench will develop, and it is the young plate, not so long after its birth, that starts to subduct toward the old plate. The Mesozoic Pacific Plate cannot easily bend, under the joint horizontal compression and vertical gravity pull, even with a pre-existing weak zone in place and with a large age offset across the plate boundary. The bending of the Caroline Plate near the northern end of the Mussau Trench started only after a long-time span of trench migration, and/or after a prolonged transition from initial compression to trench development. Highly contrasting trench deformation and sedimentary accretion between two parallel seismic sections support an evident migration of underthrusting or significant longitudinal heterogeneity along the trench. The swift transition from underthrusting to non-thrusting can be explained by a counter-clockwise rotation of the Caroline Plate. That miniature accretionary wedges develop even before the subduction initiates imply strong compression and uplifting before the underthrusting can kick-start. Rotation of the Caroline Plate have been halted as the Mussau Trench is seismically rather quiet and the Lyra Trough to the east shows relaxational extension.

关键词： Mussau Trench Subduction initiation Seismic reflection Caroline Plate

同方期刊数据库

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弥漫性结缔组织病与间质性肺疾病的关系

中华结核和呼吸杂志 2008年第4期31卷 243-244页

作者：张奉春中国医学科学院北京协和医院风湿免疫科 100730

随着医学的发展，间质性肺疾病（ILD）越来越受到重视，这是因为ILD发病率占呼吸系统疾病的15％，远超出以往的估计。引起ILD的原因众多，不同病因引起的ILD的治疗方法不同，其预后又因类型和治疗时机不同而有很大差别，因此，及时诊断... 详细信息

随着医学的发展，间质性肺疾病（ILD）越来越受到重视，这是因为ILD发病率占呼吸系统疾病的15％，远超出以往的估计。引起ILD的原因众多，不同病因引起的ILD的治疗方法不同，其预后又因类型和治疗时机不同而有很大差别，因此，及时诊断和明确ILD的病因对确定治疗方案和改变预后的意义重大。

关键词：间质性肺疾病弥漫性结缔组织病呼吸系统疾病 ILD 治疗方法治疗时机治疗方案发病率

The value of ^(99m)Tc methylene diphosphonate bone scintigraphy in diagnosing relapsing polychondritis

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Chinese Medical Journal 2006年第13期119卷 1129-1132页

作者： SHI Xu-hua zhang feng-chun CHEN Li-bo OUYANG Meng Department of Rheumatology Department of Nuclear Medicine Peking Union Medical College Hospital Chinese Academy of Medical Sciences Beijing 100730 China

Relapsing polychondritis （RP） is a recurrent disease involving cartilage mainly of the ear,nose, larynx, trachea, and bronchus. The typical manifestations of the disease in the ear and nose can be easily recognized, but the symptoms could be ignored or easily confused with those of other diseases when the cartilage of other sites is involved. Thus, it is necessary to develop a new technique for the diagnosis of this disease. Few cases of abnormal accumulation of radioactivity at cartilage shown by ^99mTc methylene diphosphonate （MDP） bone scintigraphy are described in the literature. In this report, we present 4 patients of whom 3 had positive findings on ^99mTc MDP bone scintigraphy with an assessment of ^99mTc MDP bone scintigraphy in the diagnosis of RP.

关键词： relapsing polychondritis ^99mTc methylene diphosphonate bone scintigraphy

Analysis of fiber lens with gradient index based on thin lensequivalence

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Optoelectronics Letters 2006年第1期2卷 37-40页

作者： zhang Rui-feng GE chun-feng LI Shi-chen College of Precision Instrument Optoelectronics Engineering Tianjin University Key Laboratory of Optoelectronics Information Technical Sciences Tianjin 300072 China

Theoretical analysis of the fiber-lens TEC （Thermally Expended Core） /Coreless/GRIN （Graded-Index） based on thin lens equivalence Js presented in this paper, On condition that the TEC part adjusts the waist radius of an incident Gaussian beam,that the coreless part controlls the space between the beam waist and the thin lens, and that the GRIN part acts as the thin lens with its focal length determined by fiber index distribution parameter g, the analytic expressions of the waist spot size and the working distance of the output Gaussian beam are derived, and the influence of the coreless fiber and the length of the GRIN fiber upon the fiber-lens parameter is discussed based on the numerical simulation results. It is concluded that, if a GRIN style fiber-lens is used as a collimator, the maximum of the spot waist can be up to 80μm and the divergence angle of single-mode optical fiber can be reduced by 8 times. If it is applied to a MEMS device, the maximum working distance can be up to 3 mm.

关键词：光纤器件镜头梯度指数高斯理论焦距