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A　NOVEL　IN－SITU　SPECTROELECTROCHEMICAL　TECHNIQUE　WITH　PROBE　BEAM　DEFLECTION：FOR　STUDY　OF　THE　ION　EXCHANGE　BETWEEN　FILMS　ON　ELECTRODE　SURFACE　AND　SOLUTIONS

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Chinese Chemical Letters 1995年第11期6卷 983-986页

作者： Li, JH Cheng, GJ Liu, CW jin, jg Dong, SJ Chinese Acad Sci Changchun Inst Appl Chem Electroanalyt Chem Lab Changchun 130022 Peoples R China

A novel in-situ spectroelectrochemical technique, the combination of probe beam deflection (PBD) with cyclic voltammetry (CV),was used to study the ion cxchange process of prussian blue(PB) modified film electrode in contact with various electrolyte solutions. The ion exchange mechanism was veritied as following: where on reduction PB film in contact with an acidic KCl electrolyte, it was confirmed that protons enter into the PB film before K+ cations.

关键词： DEFLECTION PROBE WITH TECHNIQUE BEAM AND

Fractal scaling of effective diffusion coefficient of solute in porous media

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Journal of Environmental Sciences 2001年第2期13卷 170-172页

作者： Liu, jg Nie, YF Tsinghua Univ Dept Environm Sci & Engn Beijing 100084 Peoples R China

Fractal approach is used to derive a power law relation between effective diffusion coefficient of solute in porous media and the geometry parameter characterizing the media. The results are consistent with the empirical equations analogous to Archie`s law and are expected to be applied to prediction of effective diffusion coefficient. Key words: diffusion; effective diffusion coefficient; fractal; porous media.

关键词： diffusion effective diffusion coefficient fractal porous media

Current updates on laboratory techniques for the diagnosis of male reproductive failure

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Asian Journal of Andrology 2016年第3期18卷 392-401,I0008页

作者： Suresh C Sikka Wayne jg Hellstrom Department of Urology Tulane University School of Medicine New Orleans Louisiana USA.

The incidence of male reproductive failure leading to infertility, whether due to delayed parenthood, environmental issues, genetic factors, drugs, etc., is increasing throughout the world. The diagnosis and prognosis of male subfertility have become a challenge. While the basic semen assessment has been performed for many years, a number of studies question the value of the traditional semen characteristics. This is partly due to inadequate methods and standardization, limited knowledge of technical requirements for quality assurance, and an incomplete understanding of what clinical information a semen assessment can provide. Laboratories currently performing semen and endocrine assessment show great variability. The World Health Organization （WHO） manual for the evaluation of semen has been the core of andrology and fertility evaluation that has helped in further development of this field over many years. These include the physical appearance of the ejaculate, assessments of sperm count, motility, vitality, morphology, and functional aspects of the sperm and semen sample. These tests also include male endocrine profile, biochemical evaluation of the semen, detection of antisperm antibodies in serum, the use of computer-aided sperm analysis （CASA）, sperm DNA integrity, and its damage due to oxidative stress. Assisted reproductive techniques （e.g., IVF, ICSI） have shown great success but are too expensive. Further development in this field with newer techniques and extensive training/instructions can improve accuracy and reduce variability, thus maintaining the quality and standards of such an evaluation. There is an urgent need to have standardized training centers and increased awareness in this area of men＇s health for reproductive success.

关键词： male infertility quality control management reproductive failure semen evaluation World Health Organization manual

Sub-high Rate Directional Solidification

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Journal of Materials Science & Technology 1998年第1期14卷 9-14页

作者： Fu, HZ Geng, XG Li, jg Zhang, J Northwestern Polytech Univ State Key Lab Solidificat Proc Xian 710072 Peoples R China

The main features of morphology evolution of crystal growth during near rapid directional solidification were reviewed and the concept of effective constitutional supercooling was proposed. On the basis of interface stability theory combined with experiments, the behaviour of transition from dendrites to fine cells was quantitatively described, and the transition from cells to plane front of absolute stability was also examined.

关键词： Rapid solidification

Infrared Isotopic Shift of Lithium Carbonate and Sulfate

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Chinese Chemical Letters 1996年第10期7卷 967-968页

作者： Tian, W Wu, jg Chang, TL BEIjinG UNIV DEPT CHEMBEIJING 100871PEOPLES R CHINA

The infrared spectra of (Li2CO3)-Li-6, (Li2CO3)-Li-7, (Li2SO4)-Li-6, and (Li2SO4)-Li-7 were studied. The isotopic shift of the vibrational frequency for Li-6 - O and Li-7 - O bonds amounts to 4.5-7.8 % for the carbona... 详细信息

关键词： Infrared Isotopic Shift of Lithium Carbonate and Sulfate

Densification of the Tungsten Heavy Alloys at 1473 K and Fabrication of W-Mo System FGM with Density Gradient

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Journal of Materials Science & Technology 1999年第3期15卷 229-232页

作者： Xiong, HP Zhang, LM Li, jg Yuan, RZ Wuhan Univ Technol State Key Lab Adv Technol Mat Synthesis & Proc Wuhan 430070 Peoples R China

The tungsten heavy alloys with Hi-Al and Fe-Al additives were sintered by hot-press method at 1473 K for 1 h. It was found that the relative density of the W-Fe alloy could be increased evidently by addition of Al. However, the relative density of W-Ni-Al alloy with low content of Al was conversely decreased considerably compared with that of W-Ni alloy. The causes have been studied. The sintering experiments of Mo alloy and W-Mo alloys with 3 wt pet Fe-1.5 wt pet Al additives were also carried out under the same sintering condition of low temperature. Finally, W-Mo system FGM with density gradient was successfully fabricated. Its density changed gradually from 17.0x10(3) kg/m(3) to 9.5x10(3) kg/m(3) within the middle 1.1 mm thickness range.

关键词： Tungsten alloys

Gel formation in extracted organic phase and FT-IR characterization

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Chinese Science Bulletin 1997年第14期42卷 1168-1172页

作者： Shen, YH Wang, DJ Wu, jg BEIjinG UNIV COLL CHEM & MOL ENGNSTATE KEY LAB RARE MAT CHEM & APPLICATBEIJING 100871PEOPLES R CHINA

IN the early 1980s, Wu and co-workers indicated that the saponification of acidic extractants,such as di(2-ethylhexyl) phosphoric acid (D2EHPA), 2-ethylhexyl phosphoric acid mono 2-ethylhexylester (PC88A), and naphthenic acid (NA), is a process of the formation of a wa-ter-in-oil (w/o) microemulsion in the organic phase. From then on, the aggregation behav-ior of this sort of extractant and metal-extractant complex in bulk phases has been investigatedfor about twenty years. The microstructure and properties of organic aggregates were ex-

关键词： DMHPA lanthanide extraction gel FT-IR.

Total integration method of three-dimensional fluorescence spectrometry

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Chinese Science Bulletin 1997年第18期42卷 1541-1544页

作者： Yan, Y Xu, jg Chen, GZ XIAMEN UNIV DEPT CHEMRES LAB SEDC ANALYT SCI MAT & LIFE CHEMXIAMEN 361005PEOPLES R CHINA

THREE-dimensional fluorescence spectrometry (TDFS) is a new technique of spectrofluorimetry that was developed two decades *** use of the abundant information

关键词： three-dimensional fluorescence spectrometry fluorescence Monte-Carlo integration.

Alcohol recognition based on twisted intramolecular charge transfer

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Chinese Science Bulletin 1997年第22期42卷 1886-1889页

作者： Lu, JZ Wei, SL Jiang, YB Xu, jg Xiamen Univ Dept Chem Res Lab SEDC Analyt Sci Mat & Life Chem Xiamen 361005 Peoples R China

TWISTED intramolecular charge transfer (TICT) is one of the hot points in condensed

关键词： TICT alcohol molecular recognition cyclodextrin.