从2009年开始,H1N1已经成为困扰全球人口的呼吸道疾病之一。同时,由于COVID-19的影响,人们普遍认为,防止病毒传播需要个人防护措施和公共场所的消毒。
■这项研究进行了两个实验。在课堂实验中,对6个UVC剂量测试点进行了校准,以测试每个测试点的UVC剂量是否符合IAV灭活标准以及达到标准所需的时间.在模拟课堂实验中,放置了七个由IAV制成的正方形幻灯片。机器人运动10分钟后,将辐照过的无菌正方形载玻片制成悬浮液,并注入鸡胚。培养鸡胚并进行IAVs测试。
■课堂实验表明,5个测试点可以达到使IAV失活的标准(3mJ/cm2),所需时间为80分钟,40分钟,15分钟,5min和10min。80分钟内不符合标准的测试点的UVC剂量仅为0.5mJ/cm2。模拟课堂实验结果表明,99.99%的IAV被停用。此外,这项研究同时建立了桌面控制组和椅子手臂控制组,两者都产生了相同的结果,表示IAVs的失活对数≥4log。
■研究表明,在1.8mW/cm2的辐照密度下,物体表面的IAV可以有效且快速地失活。同时,该研究提供了在教室环境中使用GXU机器人使IAV失活的可行性的证据。
UNASSIGNED: Starting from 2009, H1N1 has been one of the respiratory diseases that afflict the global population. Concurrently, due to the influence of COVID-19, it has become widely accepted that preventing the virus\'s spread necessitates personal protection measures and disinfection in public spaces.
UNASSIGNED: This study conducted two experiments. In the classroom experiment, six UVC dose test points were calibrated to test whether the UVC dose at each testing point met the standards for inactivating IAVs and the time required to meet the standards. In the simulated classroom experiment, seven square slides made of IAVs were placed. After 10 min of robot movement, irradiated sterile square slides were made into suspension and injected into chicken embryos. Cultivate chicken embryos and conduct IAVs testing.
UNASSIGNED: Classroom experiment has shown that 5 testing points can meet the standards for inactivating IAVs(3 mJ/cm2), with a required time of 80 min, 40 min, 15 min, 5 min and 10 min. The UVC dose for testing points that do not meet the standards in 80 min is only 0.5 mJ/cm2. The simulation classroom experiment outcomes revealed that 99.99 % of IAVs were deactivated. Furthermore, this study established both a desktop control group and a chair arm control group, both of which yielded identical results, indicating an inactivation logarithm of IAVs≥4log.
UNASSIGNED: The study presented that IAVs on the surface of an object can be effectively and rapidly deactivated at an irradiation density of 1.8 mW/cm2. Meanwhile, the study provides evidence of the feasibility of using the GXU robot to inactivate IAVs in a classroom environment.