You may request a chapter or article from a physical resource be scanned and emailed to you:
Login to the library catalogue and find the item. Select Collection Copy Request from the Get It section, complete the form, then click Send Collection Copy Request.
You will receive an email with the scan, usually within 48 hours.
To cancel a request becomes available, select My Requests under your name (top right of page) to view a list of your requests. Select the Cancel link as appropriate.