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41.
Sosulski Krystyna Wang Sunmin Ingledew W. M. Sosulski Frank W. Tang Juming 《Applied biochemistry and biotechnology》1997,(1):59-70
Rye, triticale, and barley were evaluated as starch feedstock to replace wheat for ethanol production. Preprocessing of grain
by abrasion on a Satake mill reduced fiber and increased starch concentrations in feedstock for fermentations. Higher concentrations
of starch in flours from preprocessed cereal grains would increase plant throughput by 8–23% since more starch is processed
in the same weight of feedstock. Increased concentrations of starch for fermentation resulted in higher concentrations of
ethanol in beer. Energy requirements to produce one L of ethanol from preprocessed grains were reduced, the natural gas by
3.5–11.4%, whereas power consumption was reduced by 5.2–15.6%. 相似文献
42.
Bernd C. Kellner. 《Mathematics of Computation》2007,76(257):405-441
Let ( ) denote the usual th Bernoulli number. Let be a positive even integer where or . It is well known that the numerator of the reduced quotient is a product of powers of irregular primes. Let be an irregular pair with . We show that for every the congruence has a unique solution where and . The sequence defines a -adic integer which is a zero of a certain -adic zeta function originally defined by T. Kubota and H. W. Leopoldt. We show some properties of these functions and give some applications. Subsequently we give several computations of the (truncated) -adic expansion of for irregular pairs with below 1000.
43.
片状颗粒以及板状双层及多层结构晶体的出现,促使高感光度彩色胶卷的面世。T-颗粒是当今卤化银乳剂复合结构的一种很重要的类型。由于它具有一系列优点:表面/体积比值高,受光面积大,侧向散射少,染料吸附量多而越来越受到人们的关注。 相似文献
44.
The possible lattice formation of grains of chosen material in a magnetized current carrying n-type piezoelectric semiconductor plasma has been examined. In addition to the repulsive Coulomb potential, there appears
a non-Coulombic oscillatory potential among the highly charged grains due to the strong resonant collective interaction of
the grains and the electron-acoustic mode of the host semiconductor giving rise to the possibility of the lattice formation
of grains of new materials. 相似文献
45.
A numerical method is described that may be used to determine the propagation characteristics of weakly non‐hydrostatic non‐linear free surface waves over a general, bottom topography. In shallow water of constant undisturbed depth, such waves are equivalent to the familiar cnoidal waves characterized by sharp crests and relatively flat troughs. For a certain range of parameters, these propagate without change of form by virtue of the weakly non‐hydrostatic balance in the vertical momentum equation. Effectively, this counters the tendency for the non‐linearity in a purely hydrostatic theory to lead to a continuously deforming surface wave profile. The realistic representation furnished by cnoidal wave theory of free surface waves in the shallow near‐shore zone has led to its utilization in evaluating their propagation characteristics. Nonetheless, the classic analytical theory is inapplicable to the case of wave propagation over a sloping beach or off‐shore sand bar topography. Under these conditions, a local change in form of the surface wave profile is anticipated before the waves break and knowing this is required in order to evaluate fully the propagation process. The efficacy of the numerical method is first demonstrated by comparing the solution for water of constant depth with the evaluation of the analytical solution expressed in terms of the Jacobian elliptic function cn. The general method described in the paper is then illustrated by experiments to determine the change in profile of weakly non‐hydrostatic non‐linear surface waves propagating over bed forms representative of those found in shallow coastal seas. Copyright © 2001 John Wiley & Sons, Ltd. 相似文献
46.
Jan von Delft 《Annalen der Physik》2001,10(3):219-276
We review recent experimental and theoretical work on superconductivity in ultrasmall metallic grains, i.e. grains sufficiently small that the conduction electron energy spectrum becomes discrete. The discrete excitation spectrum of an individual grain can be measured by the technique of single‐electron tunneling spectroscopy, and reveals parity effects indicative of pairing correlations in the grain. After introducing the discrete BCS model that has been used to model such grains, we review a phenomenological, grand‐canonical, variational BCS theory describing the paramagnetic breakdown of these pairing correlations with increasing magnetic field. We also review recent canonical theories that have been developed to describe how pairing correlations change during the crossover, with decreasing grain size, from the bulk limit to the limit of few electrons, and compare their results to those obtained using Richardson's exact solution of the discrete BCS model. 相似文献
47.
根据用原子力显微镜对在不同温度下晶化的Fe基非晶合金薄带三维介观结构的观察,结合X射线衍射、Mssbauer谱等前人已有的实验结果并在目前已有的理论研究基础上,对Fe基非晶合金薄带在不同温度下的晶化过程进行了系统的分析、研究,提出了两种Nb-B框架介观结构、团聚相和单位体积纳米晶粒平均数等新概念,建立了Fe基纳米晶合金的晶化机理假说,提出了描述Fe基非晶合金晶化过程的介观织构模型.这个模型能够演化成二相结构模型和三相互套结构模型,还可以合理地解释现有的实验结果以及500—600℃退火中Fe基纳米晶巨磁阻
关键词:
Fe基纳米晶合金
晶化机理
两种Nb-B框架介观结构
团聚相 相似文献
48.
主要讨论了在加权的多生成平移不变空间Vv^p(Ф)中由非均匀采样{∫R^df(x)gxj(x)dx:j∈J}来重建信号的问题.同时也讨论了投影逼近迭代算法. 相似文献
49.
Dalibor Hodko Maria Gamboa-Aldeco Oliver J. Murphy 《Journal of Solid State Electrochemistry》2009,13(7):1063-1075
A photopolymerization process that simultaneously deposits electronically conducting polymer films and incorporates nanophase
silver grains within the films, the silver grains having been formed in situ on irradiating cast, photopolymerizable formulations
containing silver salts, was developed. Polymer films produced from formulations containing large organic anions were very
flexible and strongly adherent to substrates. Polypyrrole films containing silver grains were characterized electronically
on measuring their electronic conductivities and electrochemically on recording their cyclic voltammetric profiles. Conductivities
were affected by the chemical identity and concentration of components added to photopolymerizable formulations. The best
photopolymerized films had a conductivity of the order of 1 S cm−1. Electronically conducting films derived from formulations consisting of a monomer, an electron acceptor/“dopant,” and a
photoinitiator were electrochemically active. They possessed long-term stability under extended electrode potential cycling
conditions, acceptable charge storage capacity, and the ability to oxidize or reduce redox couples in solution.
Paper submitted for inclusion in the special issue of the Journal of Solid State Electrochemistry honouring the 85th birthday
of Professor John O’M. Bockris. 相似文献
50.
In this paper,we prove a Marcinkiewicz-Zygmund type inequality for multivariate entire functions of exponential type with non-equidistant spaced sampling points. And from this result,we establish a multivariate irregular Whittaker-Kotelnikov-Shannon type sampling theorem. 相似文献