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121.
We estimate the truncation error of sampling expansions on translationinvariant spaces, generated by integer translations of a single functionand on wavelet subspaces of L
2(R). As a byproduct of themain result, we get the classical Jagerman's bound for Shannon's samplingexpansions. We also examine this error on certain wavelet sampling expansions. 相似文献
122.
《Analytical letters》2012,45(3):177-185
Abstract A new liquid chromatographic detector depends upon the fluorescence measurement of cerium (III) produced from the reaction of cerium (IV) with eluted reducible compounds. It is more sensitive than previous oxidative detectors by more than a factor of 100. The reaction can be varied to discriminate among compounds according to ease of oxidation. 相似文献
123.
124.
Hirokazu Saito Yuki Kaneko Yuki Hashimoto Takao Shirai 《International journal of environmental analytical chemistry》2013,93(14):1057-1064
A biosensor for ammonia solution was developed with a flavin-containing monooxygenase-3 (FMO3). The biosensor consisted of a Clark-type dissolved oxygen electrode and an FMO3 immobilized membrane. In order to amplify the biosensor output, a substrate regeneration cycle obtained by coupling the monooxygenase with L-ascorbic acid (AsA) as the reducing reagent system, was applied. The AsA 10.0?mmol?L?1 concentration was able to optimally amplify the sensor output 11 times greater. The FMO3 biosensor was used with AsA to measure ammonia solution from 3.20 to 14.29?mmol?L?1 and from 0.09 to 21.7?mmol?L?1 with 5.0 and 10.0?mmol?L?1 AsA, respectively. The FMO biosensor also had a good reproducibility such as a 2.5% coefficient of variation in eight multiple measurements, and the output current was maintained over a few hours. The selectivity of the FMO biosensor being attributed to enzyme specificity was obtained for several chemical substances (trimethyl amine, methyl mercaptan, dimethyl sulphide, and so on). 相似文献
125.
利用辛空间上子空间构作(d,r;z]-disjunct矩阵 总被引:5,自引:5,他引:0
高建平 《数学的实践与认识》2011,41(13)
一个(d,r;z]-disjunct矩阵在许多领域有着极为广泛的应用.利用辛空间上m维(m,s)型子空间的性质构作了(d,r;z]-disjunct矩阵,并利用子空间的计数定理计算了它的参数. 相似文献
126.
《Comptes Rendus Chimie》2014,17(1):23-29
Sodium borohydride is stabilized on poly(n-butyl-4-vinylpyridinium) chloride, and it is used as an efficient and regenerable polymer-supported borohydride reagent for the reduction of a variety of carbonyl compounds, such as aldehydes, ketones, α,β-unsaturated carbonyl compounds, α-diketones, and acyloins. 相似文献
127.
Self-bounded controlled invariant subspaces are shown to play a crucial role in the synthesis of minimal-order dynamic regulators achieving model following by output feedback with stability. The approach, completely embedded in the geometric context, provides insight into the internal eigenstructure of the minimal self-bounded invariant subspace, thus leading to an effective treatment of nonminimum-phase systems. 相似文献
128.
A new characterization of gaps between two subspaces 总被引:5,自引:0,他引:5
In this note, a new characterization of gaps between two subspaces of a Hilbert space is established.
129.
复合算子和一类解析Toeplitz算子的约化子空间 总被引:2,自引:0,他引:2
本文利用复合算子完全刻画了符号为两个Blaschke因子乘积的解析Toeplitz算子的约化子空间。 相似文献
130.
We obtain sampling and interpolation theorems in weighted spaces of analytic functions for radial weights of arbitrary (more rapid than polynomial) growth. We give an application to invariant subspaces of arbitrary index in large weighted Bergman spaces. 相似文献