Abstract: A method for transferring heat between a first fluid and a second fluid includes providing a tubeless heat exchanger having a tubeless heat exchanger core, the tubeless heat exchanger core having an inner casing and an outer casing disposed around the inner casing, the inner and outer casings defining therebetween a flow passage for a thermal transfer fluid to flow, the tubeless heat exchanger core having a core inlet arranged to receive the first fluid and a core outlet arranged to provide the first fluid, the core inlet and core outlet being fluidically connected to the flow passage, and at least one of the core inlet and core outlet being disposed on the inner casing, wherein each of the outer casing and the inner casing has an inner surface and an outer surface, wherein the respective inner surfaces face each other and define therebetween the flow passage for the first fluid to flow from the core inlet to the core outlet and wherein at least a portion of the respective outer surfaces are arranged to be co

Abstract: Providing content items on electronic documents comprises a content item server. The server receives a content item to be displayed on user computing devices, wherein the content item comprises characteristics associated with a particular item associated with the content item. The server receives a request to serve the content item in connection with relevant electronic documents and an indication that an electronic document is to be displayed on a user computing device. The server determines features of the electronic document and that the characteristics of the content item correspond to the features of the electronic document. The server provides the content item to the user computing device to display the content item in conjunction with the electronic document.

Abstract: Providing content items on electronic documents comprises a content item server. The server identifies features associated with a particular item and receives a request to create a content item to be displayed on user computing devices. The server creates a content item comprising at least one of the features associated with the particular item. The server receives a request to display the content item in conjunction with an electronic document on a user computing device and assesses at least one updated features associated with the content item. The server updates the content item with the at least one updated feature associated with the item and provides the updated content item to the user computing device to display in conjunction with the electronic document.