Abstract: The present invention provides a heating element (L) formed as a laminate including a thermally conductive substrate (1) having a first surface coated at least in part with an electrically insulating coating layer (2). The electrically insulating layer is backed with an electrically resistive layer (3), formed of a non-conducting matrix material that is loaded with conductive material to allow current to be passed through the resistive material to generate heat which can be conducted out through the thermally conductive substrate (1). An electrically and thermally insulating layer (6) backs layer (3) and direct heat through the second surface and to provide support and encapsulation to the resistive element of the system.

Abstract: This invention relates to nucleic acids encoding chimeric polypeptides comprising vacuole targeting sequences and plant-noxious sequences and especially pest control proteins. The polypeptides are useful in methods for targeting non-vacuolar harmful proteins to plant vacuoles. Chimeric polypeptides of the invention containing pest control proteins are useful for conferring pest resistance on plants and in the production of compositions useful as pesticides.