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7篇 您的检索式：作者名="LEIF O"

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		题名	作者	年代	出处	被引量
	1	A Compliant,Underactuated Hand for Robust Manipulation (in press)显示文摘	LAEL U O LEIF P J MARK R C		0，，：	1
	2	A Procedure for Regional Lake Water Clarity Assessment Using Landsat Multispectral Data显示文摘	Steven M K Patrick L B Leif G O	2002	Remote Sensing of Environment2002，82，：	1
	3	The expression of thrombospondin-1 and p53 in clear cell renal cell carcinoma:its relationship to angiogenesis,cell proliferation and cancer specific survival显示文摘	Dragomir PZ Leif B Bj(o)rn K	2009	J Urol2009，182，5：	1
	4	BMP4 substitutes for loss of BMP7 during kidney development 显示文摘	LEIF O ANDREW T D ROBERT E G	2005	Developmental Biology2005，286，：	1
	5	Broadband Tonpilz Underwater Acoustic Transducers Based on Multimode Optimazation显示文摘	Qingshan Yao Leif Bj o rn o	1997	IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control1997，44，5：	1
	6	A Procedure forRegional Lake Water Clarity Assessment using Landsat Multispectraldata显示文摘	KLOIBER S M PATRICK L B LEIF G O	2002	Remote Sensing of Environment2002，82，：	1
	7	Enzymatic Method for Rapid Determination of Oxalic Acid in Bleaching Filtrates from the Pulp and Paper Industry显示文摘Bleaching with oxygen-containing agents and recirculation of process streams in the pulp and paper industry has increased the accumulation of oxalic acid and danger for precipitation of calcium oxalate encrusts, scaling. Analysis and control of oxalic acid in bleaching filtrates is therefore becoming increasingly important in the pulp and paper industry.Chromatographic methods, such as IC and HPLC, are generally more time-consuming but are valuable as standard methods for determination of oxalic acid. However, the instrumentation needed is expensive and stationary. In this study, an enzymatic method based on oxalate oxidase and peroxidase was developed to determine oxalic acid in authentic bleaching filtrates using a spectrophotometer. The results showed that bleaching filtrates contain some compounds interfering with the enzymatic method.Pretreatment of the samples with activated charcoal was a successful approach for decreasing problems with interference. By using dilution followed by charcoal treatment, the results obtained from five bleaching filtrates with the colorimetric method correlated very well with those obtained using IC. This study offers a selective, fast and mobile analysis method to determine oxalic acid in bleaching filtrates from the pulp and paper industry. The convenient enzyme-based method improves the possibilities for control of critical oxalic acid concentrations in closed-loop bleaching streams.	洪枫 SJ(O\|¨)DE Anders NILVEBRANT Nils-Olof J(O\|¨)NSSON Leif J	2005	Journal of Donghua University(English Edition)2005，22，5：	0

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