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Real-time and dynamic transduction technique for simultaneous detection of O_2 and CO_2

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Chinese Science Bulletin 1997年第14期42卷 1175-1180页

作者： LIU Wenjun and ZHOU ZhongbaiDepartment of Chemistry, wuhan University, wuhan 430072, China Department of Chemistry Wuhan University Wuhan China

OXYGEN and carbon dioxide are the coexistent gases closely related to life processes. In our pre-

关键词： real-time and dynamic transduction technique carbon dioxide oxygen modulated potential pulse coulometry (MP-PC) modulated potential pulse amperometry (MPPA).

Joint enhancement of lead accumulation in Brassica plants by EDTA and ammonium sulfate in sand culture

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Journal of Environmental Sciences 2002年第2期14卷 216-220页

作者： XIONG Zhi\|ting, LU Ping (Department of Environmental Sciences, wuhan University, wuhan 430072, China. Department of Environmental Sciences Wuhan University Wuhan 430072 Chin

When EDTA was added alone in the Pb\|contaminated sand, the plant biomass and the total Pb amount in plant decreased in both species, Brassica pekinensis and B. juncea var. multiceps, though the shoot Pb amount increased. In contrast, when (NH 4) 2SO 4 was added alone in the Pb\|contaminated sand, little effect was observed on the shoot Pb amount, though the root Pb amount was significantly increased in B. juncea var. multiceps. When amending EDTA and (NH 4) 2SO 4 in combination, however, the shoot Pb amount in both species substantially increased, being, on an average, 2 times and 9 times higher than that in EDTA alone or (NH 4) 2SO 4 alone amended treatment, respectively. The two amendments showed antagonism for plant growth, but synergism for Pb bioaccumulation. B. pekinensis showed its highest level of shoot and total Pb amount in the treatment amended with EDTA and (NH 4) 2SO 4 only a half as much as in the other treatments. It is inferred that the mechanisms responsible for the joint\|enhanced Pb accumulation might be concerned with the acidification of the growth medium, cation exchange reaction and relieving EDTA induced toxicity as results by amending ammonium sulfate.

关键词： lead bioaccumulation EDTA ammonium sulfate Brassica

A Characterization for the Gevrey-Sobolev Wave Front Set

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Acta Mathematica Sinica,English Series 2001年第2期17卷 295-300页

作者： Hua CHEN Institute of Mathematics, wuhan University, wuhan 430072, P. R. China Institute of Mathematics Wuhan University Wuhan 430072 P. R. China

In this note, we use the so-called microlocal energy method to give a characterization of the Gevrey-Sobolev wave front set WF(HT,σS （u）, which will be useful in the study of non-linear microlocal analysis in Gevre... 详细信息

关键词： Gevrey-Sobolev space Wave front set Microlocal energy method

Chemical Modification of EVA for DrugRelease Application

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Chemical Research in Chinese Universities 1995年第1期11卷 87-90页

作者： HU Yun-hua and ZHUO Ren-xi(Deparrment of Chemistry, wuhan Uniuersity, wuhan,430072) wuhan UNIV DEPT CHEMWUHAN 430072PEOPLES R CHINA

ＣｈｅｍｉｃａｌＭｏｄｉｆｉｃａｔｉｏｎｏｆＥＶＡｆｏｒＤｒｕｇＲｅｌｅａｓｅＡｐｐｌｉｃａｔｉｏｎＨＵＹｕｎ－ｈｕａａｎｄＺＨＵＯＲｅｎ－ｘｉ（ＤｅｐａｒｒｍｅｎｔｏｆＣｈｅｍｉｓｔｒｙ，ＷｕｈａｎＵｎｉｕｅｒｓｉ... 详细信息

ＣｈｅｍｉｃａｌＭｏｄｉｆｉｃａｔｉｏｎｏｆＥＶＡｆｏｒＤｒｕｇＲｅｌｅａｓｅＡｐｐｌｉｃａｔｉｏｎＨＵＹｕｎ－ｈｕａａｎｄＺＨＵＯＲｅｎ－ｘｉ（ＤｅｐａｒｒｍｅｎｔｏｆＣｈｅｍｉｓｔｒｙ，ＷｕｈａｎＵｎｉｕｅｒｓｉｔｙ，Ｗｕｈａｎ，４３００７２）（...

关键词： EVA Drug release Enoxacin Levonorgesterel

Necessary and sufficient conditions for moderate deviations of dependent random variables with heavy tails

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Science China Mathematics 2010年第6期53卷 1421-1434页

作者： LIU Li School of Mathematics and Statistics,wuhan University,wuhan 430072,China 1. School of Mathematics and Statistics Wuhan University Wuhan 430072 China

This paper studies the moderate deviations of real-valued extended negatively dependent(END) random variables with consistently varying *** moderate deviations of partial sums are first *** results are then used to establish the necessary and sufficient conditions for the moderate deviations of random sums under certain circumstances.

关键词： moderate deviation extended negative dependence consistently varying tail random sum

SOLUTION PROPERTIES OF ANTITUMOR CARBOXYMETHYLATED DERIVATIVES OF α-(1→3)-D-GLUCAN FROM GANODERMA LUCIDUM

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Chinese Journal of Polymer Science 2001年第3期19卷 283-289页

作者： Li-na Zhang Mei Zhang Jing-hua Chen Fan-bo Zeng Department of Chemistry wuhan University, wuhan 430072, China Pharmacy College, Tongji Medical University, wuhan 430072, China wuhan Univ Dept Chem Wuhan 430072 Peoples R China Tongji Med Univ Coll Pharm Wuhan 430072 Peoples R China

Fractions of a water insoluble α-(1→3)-D-glucan (GL) extracted from Ganoderma lucidum were carboxy-methylated (CM) to obtain water-soluble carboxymethylated derivatives (CM-GL) having a degree of substitution (DS) of0.38～0.51. Weight-average molecular weight M_w and intrinsic viscosity [η] of the samples CM-GL were measured by gelpermeation chromatography combined with laser light scattering (GPC-LLS) and viscometry. The CM-GL exhibits a stifferchain in aqueous solution at 25℃ than the original glucan, The antitumor activities against Ehrlich ascites carcinoma (EAC,5×10~6) of the carboxymethylated derivatives from the α-glucan and curdlan, a β-glucan, are significantly higher than thoseof the original glucans. The effects of the relatively low molecular weight, expanded chains and better water-solubility of theCM-GL on the enhancement of antitumor activity could not be neglected. The chain stiffness decreased speedily withincrease of temperature from 40 to 60℃ or NaOH concentration from 0.1 to 0.4 in the solution, respectively, and the changeof the chain stiffness is reversible.

关键词： Solution properties Antitumor activity Carboxymethylated derivative α-D-glucan Ganoderma lucidum

STUDY ON HIGH CONTENT OF BLENDS IN CEMENT

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Journal of wuhan University of Technology(Materials Science) 1999年第1期14卷 25-29页

作者： GUO Juncai wuhan University of Technology wuhan University of Technology China Editoral Dept. Journal of Wuhan University of Tech. Wuhan 430070 China

The technology of activation by adding few activators ( less than 1%) to increase the amount of blends in cement was investigated. The results show that outer activation has a remarkable effect on improving the physical properties of slag cement, flyash cement and volcanic cement. For example, the compressive strength was increased by 5-10 MPa. Morever, the application of activation is beneficial to grind-aiding, early strength and water-reducing etc. (Author abstract) 4 Refs.

关键词： blends grinding-aiding early strength water-reducing

STUDY ON CORROSION RESISTANCE OF REBAR IN HYBRID GRINDING FLY ASH -LIME SILICATE CONCRETE

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Journal of wuhan University of Technology(Materials Science) 1999年第2期14卷 18-22页

作者： CHEN Yinzhou wuhan University of Technoloyg wuhan University of Technoloyg China Journal Editorial Office Wuhan University of Technology Wuhan 430070 China

The corrosion resistance of rebar in fly ash-lime silicate concrete as well as its macro properties and pore distribution is investigated. The results show that the fly ash is activated, the compressive strength of the silicate concrete is strengthened and its pore structure is modified after fly ash and lime being hybrid ground. Also the corrosion resistance of rebar in the silicate concrete is improved. (Author abstract) 3 Refs.

关键词： corrosion resistance rebar hybrid grinding silicate concrete

Polysiloxane with Pendant [60]Fulleropyrrolidines as Stationary Phase for Capillary Gas Chromatography

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Chinese Chemical Letters 1998年第9期9卷 847-850页

作者： Ying LIU Xun Gao ZHANG Han Ying YE (Department of Analysis and Measurement Science, wuhan University, wuhan 430072),Yuan Yin CHEN Zhao Rui ZENG (Department of Chemistry, wuhan University, wuhan 430072),Rong Sheng SHENG (wuhan Broadcasting and TV Univer wuhan Univ Dept Anal & Measurement Sci Wuhan 430072 Peoples R China wuhan Univ Dept Chem Wuhan 430072 Peoples R China wuhan Broadcasting & TV Univ Wuhan 430030 Peoples R China

Polysiloxane with pendant [60] fulleropyrrolidines was synthesized and used as the stationary phase for capillary gas chromatography for the first time. A preliminary investigation of its property shows that it has an... 详细信息

关键词： polysiloxane fulleropyrrolidine stationary phase capillary gas chromatography