As the number of systems which offer annotations on digital documents increases, robust anchoring of annotations is a key challenge. It is especially important if the annotator lacks write-access to the document being annotated. For example, if someone makes an annotation on a web page today and the web page changes tomorrow, what happens to the annotation? One approach is simply to “orphan” th...

Sarcoptic mange infested sheep showed pruritis, excoriation, crusts, lichenification and secondary alopecia on face and ears. All the infested sheep were treated successfully with Ivermectin at 200 μg/kg body weight and complete recovery of skin was observed between 10th and 14th day post treatments. Sarcoptic mange is highly contagious and the spread of Sarcoptes scabiei is usually by close co...