ST—组合Petri网的结构性质分析

本文提出ＳＴ－组合Ｐｅｔｒｉ网的概念,讨论了ＳＴ－组合Ｐｅｔｒｉ网对子网的结构性质保持问题,深入研究了ＳＴ－组合Ｐｅｔｒｉ网的结构活性、结构有界性,守恒性,可重复性,相容性,公平性。本文给出的网组合可作为系统合成与分析的有效方法。     

现代物流中果蔬保鲜包装技术及其研究进展

从果蔬生产，采后生理，消费需求3方面简要讨论了现代果蔬物讨论的基本特征，指出了果蔬包装的原理和包装的多重功能，论述了果蔬保鲜包装的主要技术环节及包装膜选择的科学方法。介绍了果蔬保鲜包装的研究进展。     

Ultrasonic preparation of citral/hydroxypropyl-β-cyclodextrin inclusion complex: Application as a potential antifungal preservative in strawberry storage

In this study, an inclusion complex (IC) of citral (CIT) within hydroxypropyl-β-cyclodextrin (HPβCD) was prepared by ultrasound technique. The structural characterization, thermal stability, phase solubility, antifungal properties and applications of CIT/HPβCD-IC in strawberry storage were investigated. The results showed that CIT/HPβCD-IC was successfully formed and had better thermal stability than CIT only. The apparent stability constant and Gibbs free energy change of the inclusion process was determined to be 142.08 M⁻¹ and −12.87 kJ mol⁻¹, respectively, by the phase solubility method. The in vitro antifungal tests demonstrated that the IC had a certain antifungal effect against Geotrichum citri-aurantii, with a significant inhibitory effect against the growth of Botrytis cinerea and Alternaria alternata at concentrations above 5 mg mL⁻¹. Additionally, the treatment of CIT/HPβCD-IC on strawberry effectively reduced the decay rate and decrease of weight loss, soluble solids, firmness, and pH, thereby extending the shelf life. This research indicated that the ultrasonically synthesized CIT/HPβCD-IC effectively improved the water solubility and stability of CIT and could be utilized as an antifungal preservative for storage and preservation of strawberry, and potentially other fruits and vegetables.     

大类招生背景下风景园林专业低年级理论课深层学习教学策略研究

以大学本科教育中低年级专业基础理论课的"教"与"学"双向质量提升为目的，分析研究近年来大类招生背景下，大学本科低年级专业教育的发展变化及产生的相关问题，针对新形势下人才培养目标的转变及出现的相关问题，提出具体应对措施。以风景园林专业风景园林设计初步课程为例，通过对深层学习方法的研究与应用，总结在教学过程中的改革经验，探索大类招生背景下风景园林专业低年级理论课深层学习教学改革思路。     

"合力"模式下的意大利乡村建成遗产保护及更新——以皮埃蒙特大区为例

本研究的目的是廓清意大利乡村建成遗产保护与更新的路径,认为其自下而上与自上而下结合的"合力"模式可为我国相关实践提供借鉴.论文简析了合力模式的形成及构成要素:GAL主导的自下而上的保护及更新与政府主导的自上而下的管控体系;梳理了保护体系演变;以皮埃蒙特大区导则编制为例,结合翔实的民居更新案例,探析地方层面乡村建成遗产的保护及更新手段.     

Curating the Digital: An Interview with MoMA's Paola Antonelli

As Senior Curator in the Department of Architecture and Design at the Museum of Modern Art, New York, Paola Antonelli treats digital and analogue design with equal regard. Here she talks to Guest-Editor Neil Leach about some of her decisions. She discusses the distinctions between design, art and architecture; how she keeps a clear head amid the prevailing euphoria over new technologies, in order to choose only those pieces that also represent successful design; whom she views as paragons of design in the digital age; and why she believes that architectural education needs to be reinvented.     

Preservation of Pacific white shrimp (Penaeus vannamei) by pullulan and melleolide composite preservatives

The qualities of Penaeus vannamei that are prone to spoilage have a significant impact on its economic profitability. To extend the shelf life of shrimp, this study formulated a novel composite preservative with pullulan and protoilludane sesquiterpene aryl esters (melleolides). Two melleolide compounds, namely armillarin and armillaripin, were identified using high-performance liquid chromatography-triple quadrupole time-of-flight mass spectrometry (HPLC–Q-TOF-MS/MS) analysis of the ethyl acetate extract of Floccularia luteovirens. The antibacterial activity of melleolides was investigated through the disc diffusion method, and it exhibited the most potent effect against methicillin-resistant Staphylococcus aureus (MRSA) among the tested bacteria, producing an inhibition zone diameter of 15.6 mm. The composite preservative displayed competitive inhibition of polyphenol oxidase, with an IC₅₀ value achieved at a melleolides content of 6.27%. Furthermore, the effects of the composite preservatives on shrimp quality were evaluated through sensory, colour, pH, TVB-N, APC, and TBARS assessments. The results indicated that S-PM8 treatment group inhibited the growth of the APC in shrimp from 8.98 log CFU/g (S–C) to 7.48 log CFU/g. The TVB-N content was maintained within 28.7 mg/100 g throughout the storage period. The content of TBARS was 0.97 mg MDA/kg at Day 12, which was significantly lower than that of the control group. Additionally, the composite preservatives substantially improved sensory scores and colour retention during storage. These findings demonstrate the potential of pullulan-melleolides composite preservative to extend the shelf life of P. vannamei.