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101.
102.
Application of hydrocolloids as baking improvers 总被引:1,自引:0,他引:1
Hydrocolloids (or gums) belong to a group of biopolymers widely used in food technology. In the bakery industry, these compounds
help to improve food texture and moisture retention, to retard starch retrogradation, and, finally, to enlarge the overall
quality of the products during storage. Since recently, some hydrocolloids are being used due to their polymeric structure
as fat replacers to obtain low calorie products and to substitute gluten in the formulation of gluten-free breads. This study
describes the applications of some hydrocolloids in the bakery industry. Technological effects of these substances for different
types of bakery products are also discussed. 相似文献
103.
Allan C.V. dos Santos 《Microchemical Journal》2009,93(1):110-114
Optimization of photo-Fenton degradation of copper phthalocyanine blue was achieved by response surface methodology (RSM) constructed with the aid of a sequential injection analysis (SIA) system coupled to a homemade photo-reactor. Highest degradation percentage was obtained at the following conditions [H2O2]/[phthalocyanine] = 7, [H2O2]/[FeSO4] = 10, pH = 2.5, and stopped flow time in the photo reactor = 30 s. The SIA system was designed to prepare a monosegment containing the reagents and sample, to pump it toward the photo-reactor for the specified time and send the products to a flow-through spectrophotometer for monitoring the color reduction of the dye. Changes in parameters such as reagent molar ratios, residence time and pH were made by modifications in the software commanding the SI system, without the need for physical reconfiguration of reagents around the selection valve. The proposed procedure and system fed the statistical program with degradation data for fast construction of response surface plots. After optimization, 97% of the dye was degraded. 相似文献
104.
In the nuclear fuel cycle, fluorine is currently not recycled. In this paper, we have examined the possible routes to implement such a cycle. Because UF6 deconversion requires an excess of water, aqueous HF is produced. Two alternatives are then possible: either separate HF from H2O or recycle the HF-H2O in the deconversion process. Alternative UF6 deconversion could also be implemented to resorb the high UF6 inventory. 相似文献
105.
106.
应用因子分析法对建设项目动态联盟背景下的伙伴信用进行评价。通过网站和问卷调查获取的数据提取出4个公共因子:盈利和成长能力、经营能力、创新能力、履约能力因子;并确定了4个公共因子和16个指标对伙伴信用的影响力度;相关性分析发现,伙伴信用与其绩效密切相关。最后对部分被调研企业中的17个企业的信用水平进行了综合评价,为其采取有效策略提高信用水平提供依据,也为盟主企业选择伙伴提供参考。 相似文献
107.
针对具有不确定语言信息的多属性决策问题,给出了一种基于语言概率测度的决策分析方法。阐述了不确定语言变量的概念,提出了一种用于处理不确定语言变量的语言概率有序加权平均(linguistic probabilistic ordered weighted averaging,LPOWA)算子。采用LPOWA算子将不确定语言转化为二元语义,再通过ETOWA算子得到每个方案的综合评价值,进而可得到所有方案的排序结果。利用LPOWA算子和ETOWA算子,对辽宁省风险投资企业进行评估和优选。理论分析和计算结果表明:该方法简洁可行,便于应用。 相似文献
108.
The first passage time (FPT) problem is an important problem with a wide range of applications in science, engineering, economics, and industry. Mathematically, such a problem can be reduced to estimating the probability of a stochastic process first to reach a boundary level. In most important applications in the financial industry, the FPT problem does not have an analytical solution and the development of efficient numerical methods becomes the only practical avenue for its solution. Most of our examples in this contribution are centered around the evaluation of default correlations in credit risk analysis, where we are concerned with the joint defaults of several correlated firms, the task that is reducible to a FPT problem. This task represents a great challenge for jump‐diffusion processes (JDP). In this contribution, we develop further our previous fast Monte Carlo method in the case of multivariate (and correlated) JDP. This generalization allows us, among other things, to evaluate the default events of several correlated assets based on a set of empirical data. The developed technique is an efficient tool for a number of financial, economic, and business applications, such as credit analysis, barrier option pricing, macroeconomic dynamics, and the evaluation of risk, as well as for a number of other areas of applications in science and engineering, where the FPT problem arises. Copyright © 2008 John Wiley & Sons, Ltd. 相似文献
109.
In the present study, we treat the stochastic homogeneous Gompertz diffusion process (SHGDP) by the approach of the Kolmogorov equation. Firstly, using a transformation in diffusion processes, we show that the probability transition density function of this process has a lognormal time‐dependent distribution, from which the trend and conditional trend functions and the stationary distribution are obtained. Second, the maximum likelihood approach is adapted to the problem of parameters estimation in the drift and the diffusion coefficient using discrete sampling of the process, then the approximated asymptotic confidence intervals of the parameter are obtained. Later, we obtain the corresponding inference of the stochastic homogeneous lognormal diffusion process as limit from the inference of SHGDP when the deceleration factor tends to zero. A statistical methodology, based on the above results, is proposed for trend analysis. Such a methodology is applied to modelling and forecasting vehicle stocks. Finally, an application is given to illustrate the methodology presented using real data, concretely the total vehicle stocks in Spain. Copyright © 2008 John Wiley & Sons, Ltd. 相似文献
110.
对"企业是什么"的探讨产生了诸多企业理论的研究学派,但这些理论只解释了企业的一些片段,未能认知企业本体.因此引入人工智能Agent的概念,认为企业是以计算经济盈亏为主要特征的类真体,并提出"本真体"和"实真体"的概念,与类真体构成了现代企业本体认知的基本概念体系,来证明将人工智能理论和方法引入企业理论的逻辑合理性,以期许解决企业理论的本原问题. 相似文献