Investigation of stimulated growth effect using pulsed cold atmospheric plasma treatment on Ganoderma lucidum

Cold atmospheric plasma (CAP) driven by pulsed high-voltage power has specific advantages in various fields, such as the growth promotion of edible fungi in plasma agriculture. Compared with other strains, Ganoderma lucidum has the significant advantage of high medicinal value, but the shortcomings of low yield, long growth cycle, and an uneven market quality. In this study, Ganoderma lucidum was treated with a CAP powered by a homemade pulsed high-voltage power supply. Three groups of Ganoderma lucidum were treated under different conditions. The stalk lengths and pileus areas of Ganoderma lucidum were recorded to evaluate growth status. Results showed that treatment frequency affected growth status considerably. Ganoderma lucidum was treated with 40 s plasma once a week and showed an improved growth status with a 33.63% increase in average stalk length and a 28% increase in the number of individuals whose pileus areas was greater than the average. Meanwhile, the growth speed was accelerated. However, treatment at an excessive frequency would damage and slow down the growth of Ganoderma lucidum.     

图说宁波15分钟社区生活圈规划导则

15分钟社区生活圈规划是社区服务建设的基本依据。近几年来,上海、济南等城市陆续推出适用于本城的15分钟社区生活区建设导则。宁波作为发展迅速的新一线城市,也积极推广落实15分钟社区生活圈规划营造。本文通过图文对照的形式,阐述宁波市15分钟社区生活圈规划导则的纲要,内容涉及社区居住、出行、服务、公共空间等规划要求,为其他城市实现15分钟社区生活圈规划营造提供建设和指导依据。     

企业信息化建设中信息安全问题及对策

目前我国的市场经济体制发展迅速,随着信息化时代的到来,发展企业的信息化管理成为重要的工作环节。其中,要想实现企业信息化建设,信息安全问题是至关重要的。本文提出企业信息安全体系构建的重要意义,并对当前企业信息化建设中的安全现状进行分析,给与了企业信息化建设的解决措施。     

装饰之美——哈尔滨铁路博物馆外立面装饰柱探究

装饰柱作为建筑重要的装饰部件之一,能够体现出建筑的艺术持色和风格特征,对建筑装饰起到了不可忽视的作用。本文通过实际调研法、归纳总结法、文献阅读法,以点线面的逻辑顺序,探究装饰柱的单体特征、柱与柱、柱与外立面之间的线面空间关系,以此得出哈尔滨铁路博物馆外立面的装饰规律。旨在对哈尔滨现代建筑外立面的装饰有一定的参考、借鉴作用。     

刍议企业信息管理中OA系统的应用和实现

随着我国企业发展水平的不断进步和企业信息管理整体水平的持续提升,在企业信息管理中OA系统得到了越来越广泛的应用。文章从阐述企业信息管理中OA系统应用入手,对企业信息管理中OA系统实现进行了分析。     

社区微更新项目全流程管理探索——以上海市芦潮港社区律动园为例

社区微更新项目的全流程管理是提升项目品质的重要抓手。文章介绍了上海芦潮港社区律动园微更新项目从立项、调研、设计、实施到使用后评价的全流程。项目践行以人为本的城市更新理念,介入社区营造和多元共治的更新模式。通过民意征集、问卷调研、审查会、居民听证会及使用后评价等方式,探索了社区微更新项目管理的全流程,以此提升居民的社区事务参与度和对设计结果的认同。借助实际案例讨论了社区微更新的全流程,证实以全流程管理和精细化治理的公共空间微更新模式的可行性和合理性,以此提高设计师决策的正确性,平衡设计矛盾,为社区微更新项目提供指导和借鉴意义。     

公共卫生视野下的疗愈环境研究与实践

本文探讨了公共卫生视角下疗愈环 境研究与实践的发展。理想的疗愈系统是由 内往外的系统建构,疗愈环境是外部环境的 一部分,其类型包括自然环境、城市环境、 建筑环境和室内环境等。本文结合研究阐述 了当前疗愈环境的实践,已经从传统的康复 花园和治愈景观,拓展到疗愈街道、疗愈建 筑、虚拟疗愈等多种环境领域。并指出应该 将疗愈环境结合进公共卫生体系中, 作为健 康城市运动的一部分,获得新的发展动力。     

Sterilization mechanism of helium/helium–oxygen atmospheric-pressure pulsed dielectric barrier discharge on membrane surface

Pulsed dielectric barrier discharge (PDBD) exhibits several applications in different fields; however, the interaction of its components with substances remains a key issue. In this study, we employed experimental and numerical modeling to investigate the interactions between different PDBD components and substances in pure helium and a helium–oxygen mixture. A membrane comprising a Staphylococcus aureus strain was utilized as the treatment object to demonstrate the trace actions of the evolutions and distributions of certain components on the surface of the substance. The results revealed that the shapes and sizes of the discharging area and inhibition zone differed between groups. Under a pure helium condition, a discharge layer existed along the membrane surface, lying beside the main discharging channel within the electrode area. Further, an annulus inhibition zone was formed at the outer edge of the electrode in the pure helium group at 30 s and 1 min, and this zone extended to a solid circle at 2 min with a radius that was ∼50% larger than that of the electrode radius. Nevertheless, the discharging channel and inhibition zone in the helium–oxygen mixture were constrained inside the electrode area without forming any annulus. A 2D symmetrical model was developed with COMSOL to simulate the spatiotemporal distributions of different particles over the membrane surface, and the result demonstrated that the main components, which formed the annulus inhibition zone under the pure helium condition, contributed to the high concentration of the He+ annulus that was formed at the outer edge of the electrode. Moreover, O+ and ${{\rm{O}}}_{2}^{+}$ were the main components that killed the bacteria under the helium–oxygen mixture conditions. These results reveal that the homogenization treatment on a material surface via PDBD is closely related to the treatment time and working gas.     

高阻隔耐蒸煮复合包装用聚氨酯胶黏剂的 制备与性能

以低聚物聚酯多元醇与异氰酸酯反应，合成了一种可被用于高阻隔复合包装膜、具有较强的黏结性能和耐蒸煮性能的聚氨酯胶黏剂。并探究了不同反应条件对聚氨酯胶黏剂及复合薄膜性能的影响。研究发现，主剂的初始黏度与反应温度呈正相关，异氰酸酯基与羟基的物质的量之比（简称R值）越大，则初始黏度和复合膜的平均剥离力越大；而R值过大或三醇占总醇的物质的量之比过大，则合成的聚氨酯胶黏剂越易出现凝胶。较优条件下制备的复合膜的透水率为1.05 g/(m2·d)，透氧率为0.62 cm3/(m2·d)，并具有良好的耐高温蒸煮性能。