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西兰花苗中萝卜硫素合成的调控手段研究进展

食品科学 2025年第1期46卷 210-217页

作者：李翠方胜赵忠良刘海杰中国农业大学食品科学与营养工程学院北京100083 江苏新希望生态科技有限公司江苏徐州221150

萝卜硫素(sulforaphane,SFN)具有抗肿瘤、抗炎、抗氧化、减轻肥胖等多种生物学活性,在西兰花苗中含量最高,使西兰花苗在保健食品和药品开发方面具有广阔的应用前景。本文首先综述SFN在西兰花苗中的合成及降解过程,重点讨论在西兰花苗生... 详细信息

萝卜硫素(sulforaphane,SFN)具有抗肿瘤、抗炎、抗氧化、减轻肥胖等多种生物学活性,在西兰花苗中含量最高,使西兰花苗在保健食品和药品开发方面具有广阔的应用前景。本文首先综述SFN在西兰花苗中的合成及降解过程,重点讨论在西兰花苗生长阶段采用不同处理手段对SFN及其合成相关因子含量的影响,并对其作用机理进行总结分析,最后提出目前还存在的问题及对未来研究方向的展望,为提高植物源食品功能性的相关研究提供一定参考。

关键词：西兰花苗硫代葡萄糖苷萝卜硫素生成机理调控

Synthesis, Structures and Properties of C(sp^2)‐Centered Homo‐ and Hetero‐Nuclear Gold Complexes

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Chinese Journal of Chemistry 2019年第3期37卷 276-291页

作者： cui-cui li liang Zhao Key Laboratory of Bioorganic Phosphorus Chemistry&Chemical Biology Department of ChemistryTsinghua UniversityBeijing 100084China School of Chemistry and Chemical Engineering Beijing Institute of Technology Peking University

C(sp^2)‐centered homo‐ and hetero‐nuclear gold complexes have attracted widespread interests in recent decades. Studies of this type of complexes may deepen the understandings of the intermediates in Au‐catalyzed organic reactions and explore new applications in catalytic and material science. The focuses of this review include the synthesis, structural characteristics, properties and applications of C(sp^2)‐centered homo‐ and hetero‐nuclear gold complexes according to different structural classifications.

关键词： Homo homo

DS-MMAC:A Delay-Sensitive Multi-Channel MAC Protocol for Ambient Assistant living Systems

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China Communications 2016年第5期13卷 38-46页

作者： Haiming Chen li cui Institute of Computing Technology Chinese Academy of Sciences

In Ambient Assistant living(AAL) systems, it is a fundamental problem to ensure prompt delivery of detected events, such as irregular heart rate or fall of elderly, to a central processing device(e.g. gateway node). Most of recently proposed MAC protocols for low-power embedded sensing systems(e.g. wireless sensor networks) are designed with energy efficiency as the first goal, so they are not suitable for AAL systems. Although some multi-channel MAC protocols have been proposed to address the problem, most of those protocols ignore the cost of channel switching, which can have reverse effect on network performance, especially latency of data delivery. In this paper, we propose a Delay-Sensitive Multi-channel MAC protocol(DS-MMAC) for AAL systems, which can provide high packet delivery ratio and bound low latency for data delivered to the gateway node. The novelty of the protocol is that an efficient distributed time slot scheduling and channel assignment algorithm is combined with the process of route establishment, which takes the channel switching cost into account and reduces endto-end delay to meet the required delay bound of each data flow. The performance of the proposed protocol is evaluated through extensive simulations. Results show that DS-MMAC can bound low latency for delivering detected events in AAL system to the gateway, while providing high delivery reliability and low energy consumption.

关键词： ambient assistant living multi-channel mac channel switching slot scheduling channel assignment

NONSTRUCTED GRID MESH FINITE VOLUME METHOD AND APPliCATION

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Journal of Hydrodynamics 1997年第3期9卷 24-32页

作者： Wang, Xiaojian cui, li Dalian Univ of Technology Dalian China

The finite volume method (FVM) has been used and applied. Gauss theorem was used to transfer volume integration to area integration and the relation formula of nodes around each element was found based on the constancy of flux into and out of element. This method with free cubic element was applied in 3-D seepage and tidal flow problems. It can be found that the seepage flux with FVM method is more accurate than FEM method. The FVM has the advantages of good stability, convenience of solving, easy programming, less computing time and storage.

关键词： Computer simulation Finite volume method Leakage (fluid) Numerical methods Seepage Tides

NUMERICAL ANALYSIS OF WATER SURFACE PROFILE IN RIVER AFFECTED BY TIDE FLUCTUATION

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Journal of Hydrodynamics 1997年第2期9卷 86-93页

作者： cui, li li, linpu Meng, Fanchun Dalian Univ of Technology Dalian China

A Finite Difference Method with four points weighted implicit scheme and Newton-Raphson iteration method are introduced to complete the flood routing in the tidal river. The problems related to normalization of cross-sectional area and optimization of weighting factor α are discussed and α = 0. 5 - 0. 7 is suggested. With such a α, high accuracy, stable and convergence results and flexible time step will be expected. The computational example of a tidal river in liaoning Province shows the good agreement with the measuring data on prototype.

关键词： tides unsteady flow weighted factor/normalization of cross-sectional

Metabolic responses of indigenous bacteria in chicken faeces and maggots to multiple antibiotics via heavy water labeled single-cell Raman spectroscopy

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Journal of Environmental Sciences 2022年第3期34卷 394-402页

作者： Oladipo Oladiti Olaniyi Hongzhe li Yongguan Zhu li cui Key Lab of Urban Environment and Health Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Department of Microbiology Federal University of TechnologyPMB 704 AkureNigeria University of Chinese Academy of Sciences Beijing 100049China

The use of maggots derived from chicken faeces as fish diets might serve as a vehicle for the widespread of multiple antibiotic resistant bacteria(ARB) in the environment. Heavy water labeled single-cell Raman spectroscopy(D_(2)O-Raman) was applied to detect the metabolic responses of indigenous bacteria in chicken faeces and maggots to different concentrations of combined colistin, kanamycin, and vancomycin. By incubating the samples with D_(2)O and antibiotics, metabolically active bacterial cells to antibiotics were distinguished from those inactive by the exhibition of C-D Raman band. Using the C-D band as a universal metabolic biomarker, 96% and 100% of cells in chicken faeces and maggots were revealed to be metabolically active to 1 × minimum inhibition concentration(MIC) of the aforementioned antibiotics. A noticeable decrease in the percentage of active cells from 96% to 76% in faeces and 100% to 93% in maggots was observed at 5 × MIC of antibiotics. However, these ratios were still far above that obtained from the same faeces(1.84%) and maggots(0.51%) samples using a cultivation method, indicating the wide presence of nongrowing but metabolically active bacterial cells under antibiotic treatment. Conclusively, the cultureindependent D_(2)O-Raman approach detected and quantified a large portion of metabolically active indigenous bacteria to multiple antibiotics in their native environments, illustrating the great potential risks of these active cells to spread antibiotic resistance via food chain.

关键词： Chicken faeces and maggot Antibiotic resistance Heavy water-Raman spectroscopy Single-cell Metabolically active cells

On the Periodic Logistic Map

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Acta Mathematica Sinica,English Series 2018年第5期34卷 891-900页

作者： cui Ping li Ming ZHAO LMIB-School of Mathematics and Systems Science Beihang University

In this paper, the famous logistic map is studied in a new point of view. We study the boundedness and the periodicity of non-autonomous logistic map xn＋1=rnxx（1-xn）, n=0, 1,...,where {rn} is a positive p-periodic sequence. The sufficient conditions are given to support the existence of asymptotically stable and unstable p-periodic orbits. This appears to be the first study of the map with variable parameter r.

关键词： Non-autonomous logistic map periodic orbit asymptotic stable

Small Prime Solutions of a Pair of linear Equations in Five Prime Variables

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Acta Mathematica Sinica,English Series 2010年第3期26卷 569-578页

作者： Zhen cui Hong Ze li Department of Mathematics Shanghai Jiao Tong University Shanghai 200240 P. R. China

Assume an additional congruent condition on the coefficients. We prove that the pair 5 of linear equations ∑j=1^5 αλjpj = bλ （λ= 1, 2） has solutions in primes pj satisfying pj 〈〈（｜b1｜＋｜b2｜＋1） maxλ,j ｜αλj｜^2318＋ε. This improves the exponent 79680 without assuming the additional condition of the second author＇s.

关键词： Diophantine equations Deuring-Heilbronn phenomenon large sieve inequality zero-free region

Determining a Multi-layered Fluid-solid Medium from the Acoustic Measurements

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Acta Mathematicae Applicatae Sinica 2020年第1期36卷 67-73页

作者： Yan-li cui Feng-long QU School of Mathematics and Information Sciences Yantai UniversityYantai 264005China

Consider the inverse problem of recovering a multi-layered fluid-solid medium from many acoustic measurements corresponding to time-harmonic acoustic plane *** prove that both the supports of the embedded solid obstacle and the surrounding layered fluid medium can be uniquely identified by means of acoustic far-field pattern for all incident wave fields at a fixed *** proof is based on the constructions of some well-posed partial differential equation systems in sufficiently small domains combined with the a priori estimates for the solutions of the forward scattering problem.

关键词： inverse scattering fluid-solid interaction multi-layered medium uniqueness