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扣囊复膜酵母麸曲制备及其在小曲白酒中的应用

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食品科学 2025年第1期46卷 56-63页

作者：刘霄黄治国卫春会任志强谢军邓杰四川轻化工大学酿酒生物技术及应用四川省重点实验室四川宜宾644000 中国轻工业酿酒生物技术及智能制造重点实验室四川宜宾644000

为提高小曲白酒中乙酸乙酯的含量,以大曲中分离的一株产酯能力较强的扣囊复膜酵母M1为出发菌株,将其制备为麸曲(M1麸曲)并用于小曲白酒酿造,分析M1麸曲强化发酵对小曲白酒挥发性风味组分的影响。结果表明:M1麸曲最佳培养条件为:水分质... 详细信息

为提高小曲白酒中乙酸乙酯的含量,以大曲中分离的一株产酯能力较强的扣囊复膜酵母M1为出发菌株,将其制备为麸曲(M1麸曲)并用于小曲白酒酿造,分析M1麸曲强化发酵对小曲白酒挥发性风味组分的影响。结果表明:M1麸曲最佳培养条件为:水分质量分数40%、培养温度28℃、麸皮初始酸度6 mmol/100 g、培养时间48 h;酿造实验结果显示,添加M1麸曲显著提高了实验组(K组)乙酸和乙酸乙酯的含量(P<0.05),极显著降低了异丁醇和异戊醇的含量(P<0.01);通过对微生物群落结构的分析表明,对照组和K组酒醅的微生物群落演替规律存在差异,K组扣囊复膜酵母属和魏斯氏菌属相对丰度增加;同时通过PICRUSt2功能预测分析,验证了K组参与乙酸和乙酸乙酯代谢的酶丰度更高。通过麸曲为介质将扣囊复膜酵母M1应用到小曲发酵可有效提高小曲白酒乙酸乙酯的含量,对提高小曲白酒质量具有一定参考意义。

关键词：扣囊复膜酵母麸曲小曲白酒挥发性物质

Comparative filtration and dewatering behavior of vitrinite and inertinite of bituminous coal:Experiment and simulation study

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International Journal of Mining Science and Technology 2021年第2期31卷 233-240页

作者： An ping Wencheng Xia Yaoli Peng Guangyuan xie School of Chemical Engineering and Technology China University of Mining and TechnologyXuzhou 221116JiangsuChina

The filtration and dewatering of fine clean coal not only ensure industrial water recycle in coal washing plant,but also reduce the moisture of coal product in order to meet the requirements of combustion or coking *** clean coal is mainly composed by organic matter,and the property difference of different organic matter determines the filtration and dewatering *** this investigation,vitrinite and inertinite were separated from a clean bituminous coal,and the comparative filtration and dewatering behavior of vitrinite and inertinite were *** results showed that inertinite has lower dewatering rate and higher filter cake moisture than *** analysis of filter cake structure showed that inertinite particle is easier to be broken into small particles due to the difference of mechanical properties,thus forming more compact filter cake than *** analysis of particle surface properties showed that vitrinite is more hydrophobic than inertinite,which makes water easier drained from filter *** simulation study showed that the structure of inertinite is more porous than that of vitrinite,and the interaction between inertinite and water is stronger than that between vitrinite and *** study provides a theoretical basis for improving coal dewatering by selectively improving coal maceral hydrophobicity.

关键词： Coal maceral groups Filtration Dewatering Simulation

Further result in the fast and accurate estimation of single frequency

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Journal of Systems Engineering and Electronics 2007年第3期18卷 646-649页

作者： xiao Yangcan Wei ping School of Electronic Engineering Univ. of Electronic Science & Technology of China Chengdu 610054 P. R. China

A new fast and accurate method for estimating the frequency of a complex sinusoid in complex white Gaussian environments is proposed. The new estimator comprises of applications of low-pass filtering, decimation, and frequency estimation by linear prediction. It is computationally efficient yet obtains the Crazner-Rao bound at moderate signal-to-noise ratios. And it is well suited for real time applications requiring precise frequency estimation. Simulation results are included to demonstrate the performance of the proposed method.

关键词： frequency estimation maximum likelihood complex sinusoid.

Twisted Duality Symmetry and Integrability of Hybrid Superstring on AdS2 × S^2

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Communications in Theoretical Physics 2007年第4X期48卷 680-684页

作者： xie xiao-Ning SKLLQG Institute of Earth Environment CAS Xi'an 710015 China Institute of Modern Physics Northwest University Xi'an 710069 China Department of Physics Ningbo University Ningbo 315211 China

In this paper, we show that there exists a twisted duality symmetry between the Maurer-Cartan equations and the equations of motion in the hybrid formalism for the type liB superstring in an AdS2 ×S2 background with Ramond-Ramond flux. As a result, from the twisted duality transformation, we construct the Lax connection with the spectral parameter, which ensures the integrability of the system.

关键词： hybrid superstring twisted duality symmetry Lax connection integrability

Long-term outcomes after hepatectomy of huge hepatocellular carcinoma: A single-center experience in China

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Hepatobiliary & Pancreatic Diseases International 2019年第6期18卷 532-537页

作者： Qiang Fang Qing-Song xie Jiang-Ming Chen Shen-Liang Shan Kun xie xiao-ping Geng Fu-Bao Liu Division of General Surgery First Affiliated Hospital Anhui Medical University

Background: Currently, hepatectomy remains the first-line therapy for hepatocellular carcinoma(HCC). However, surgery for patients with huge( > 10 cm) HCCs is controversial. This retrospective study aimed to explore long-term survival after hepatectomy for patients with huge HCC. Methods: The records of 188 patients with pathologically confirmed HCC who underwent curative hepatectomy between 2007 and 2017 were reviewed;patients were divided into three groups according to tumor size: huge( > 10 cm;n = 84), large(5–10 cm;n = 51) and small( 10 cm) had significant effect on OS, and postoperative antiviral therapy and postoperative complications also had significant effects on DFS. Conclusions: Huge HCC is not a contraindication of hepatectomy. Although most of these patients experienced recurrence after surgery, OS and DFS were not significantly different from those of patients with large HCC after resection.

关键词： Hepatocellular carcinoma Prognosis Risk factors Surgical resection

Estimation in Partially Observed Functional Linear Quantile Regression

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Journal of Systems Science & Complexity 2022年第1期35卷 313-341页

作者： xiao Juxia xie Tianfa ZHANG Zhongzhan Faculty of Science Beijing University of TechnologyBeijing 100124China School of Mathematics and Computer Science Shanxi Normal UniversityLinfen 041000China Faculty of Science Beijing University of TechnologBeijing 100124China.

Currently,working with partially observed functional data has attracted a greatly increasing attention,since there are many applications in which each functional curve may be observed only on a subset of a common domain,and the incompleteness makes most existing methods for functional data analysis *** this paper,motivated by the appealing characteristics of conditional quantile regression,the authors consider the functional linear quantile regression,assuming the explanatory functions are observed partially on dense but discrete point grids of some random subintervals of the domain.A functional principal component analysis(FPCA)based estimator is proposed for the slope function,and the convergence rate of the estimator is *** addition,the finite sample performance of the proposed estimator is evaluated through simulation studies and a real data application.

关键词： Conditional quantile regression functional data analysis functional principal component analysis incomplete curves

Optimal arrangement of viscoelastic dampers for seismic control of adjacent shear-type structures

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2013年第1期14卷 47-60页

作者： xiao HUANG Hong-ping ZHU School of Civil Engineering and Mechanics Huazhong University of Science and Technology Hubei Key Laboratory of Control Structure Huazhong University of Science and Technology

The optimal arrangement of viscoelastic dampers (VEDs) used to link two adjacent shear-type structures under seismic excitation was investigated. A two-step optimal design method is proposed. First, optimal parameter expressions of the Kelvin model are used to calculate the optimal stiffness and damping coefficient of the VEDs. Then, using the two-step optimal design method, taking the quadratic performance index as the optimization objective, the optimal arrangement of the dampers is determined. General rules about the optimal arrangement of the VEDs were obtained. The results show that the placement of only one damper between two adjacent shear-type structures should be avoided; if more than one damper is used, they should be distributed on the top and lower floors of the structures. Optimization of the number of dampers had little effect on response reduction. The most important factor was the optimization of the placement of the dampers. Through comparative study, for buildings of equal and unequal heights, the optimal parameters of dampers from parametric studies were shown to match the theoretical results for different numbers and placements of dampers. The level of response reduction was shown to be sensitive to the damping coefficient of the dampers.

关键词： Adjacent shear-type structures Viscoelastic damper (VED) Optimal arrangement Seismic response

SEMI-DISCRETE AND FULLY DISCRETE PARTIALPROJECTION FINITE ELEMENT METHODS FOR THEVIBRATING TIMOSHENKO BEAM

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Journal of Computational Mathematics 1999年第4期17卷 353-368页

作者： Min-fu Feng xiao-ping xie Hua-xing Xiong(Department of Mathematics, Sichuan University, Chengdu 610064, China.) 四川大学数学系四川成都 610064 四川大学数学系四川成都

In this paper, the partial projection finite element method is applied to the time-dependent problem-the damped vibrating Timoshenko beam model. It is proved that this method allows some new combinations of interpolations for stress and displacement fields. When assuming that a smooth solution exists, we obtain optimal convergence rates with constants independent of the beam thickness. (Author abstract) 15 Refs.

关键词： Timoshenko beam finite element

KeJia:towards an autonomous service robot with tolerance of unexpected environmental changes

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Frontiers of Information Technology & Electronic Engineering 2019年第3期20卷 307-317页

作者： Wei SHUAI xiao-ping CHEN Department of Computer Science and Technology University of Science and Technology of China

KeJia is a domestic service robot, consisting of a mobile base, an arm, two cameras, and a set of software components for perception, manipulation, natural language understanding, motion and task planning, and decision making. With on-line running of these functions, a robot can adapt to dynamic environments which may have unexpected changes. In this paper, we propose a novel hierarchical method which combines motion planning with a neural network, so that the robot can tolerate errors from sensors, wear of parts, and human disturbances during motion execution. We evaluate our work on KeJia that cooks popcorn using a microwave oven, where humans try to disturb KeJia during the operation.

关键词： Robot Task planning Manipulation