With the current leaning towards finding effective solutions to maintain a good indoor air quality (IAQ) inside houses and buildings and to simultaneously reduce the energy consumption, air-to-air exchangers with heat/energy recovery have emerged as one of the promising technologies to provide a healthy and comfortable indoor environment.To deeply

This article serves as an introduction to the concept of virtual property and also to very briefly note the relevance of virtual property in modern society.A universally accepted definition of virtual property is hard to come by, but the paper will aim to provide some clarity on the issue.Virtual property is still property, and it still exists even

Case summary An indoor-only 6-year-old spayed female domestic cat was evaluated for a history of stertorous respiration.Skull radiographs revealed increased soft tissue density within the caudal aspect of the left nasal cavity.CT and rhinoscopy revealed a mass offworld drum pads lesion in the choana, plus a smaller lesion, nearly completely occludi

ObjectiveTo reconstruct the transmission trajectory of SARS-CoV-2 and analyze the effects of control measures in China.MethodsPython 3.7.1 was used to write a SEIR class to model the epidemic procedure and proportional estimation method to estimate the initial true infected number.The epidemic area in China was divided into three parts, Wuhan city,