Abstract: A door chain assembly comprising a chain and an anchor plate. The anchor plate comprises a back plate and a chain-receiving plate and the chain-receiving plate extends from the back plate. The chain-receiving plate is provided with an aperture and/or a chain-holding slot. The chain comprises a plurality of links with adjacent links being rotationally offset with respect to one another.

Abstract: There are disclosed novel compounds which are derived from 22,23-dihydro avermectin B1 aglycone. The compounds are both isomers of the 27-hydroxy adduct of the substrate avermectin compound that have been glycosylated at the 4" position to yield 4"-O-glucosyl 27-OH avermectin compounds. The compounds and the intermediates used to make them are highly potent antiparasitic, insecticidal and anthelmintic avermectin agents.

Abstract: Avermectin compounds are glycosylated the 4' and 4"-positions by adding the avermectin compounds to the fermentation medium of Saccharapolyspora erythrea. The outer oleandrose sugar group of the avermectin compound is glycosylated with a glycosyl moiety, specifically a glucose group. In addition, other changes are effected in the avermectin moiety such as selective hydroxylation, epimerization at the 2-carbon and migration of the .DELTA. 3-double bond to a .DELTA. 2-position.

Abstract: Fermentation of S. erythraea produces the novel avermectin, 28-hydroxy ivermectin aglycone.

Abstract: Fermentation of S. erythraea produces the novel avermectin, 28-hydroxy ivermectin aglycone.

Abstract: A lampholder for a screw-in lightbulb has a body supporting two cable terminals for connection to an electrical supply, and a contact carrier mounted on the body and defining a bulb receiving socket, the contact carrier being movable between first and second positions relative to the body in a direction parallel to the insertion direction of a bulb and supporting terminals which connect an inserted bulb to the cable terminals when the carrier is in the first position but are spaced from the cable terminals when the carrier is in the second position. A spring pushes the carrier to the second position. When a bulb is screwed part-way into the carrier socket it bears against a fixed abutment so that the carrier is moved from the second to the first positions as the bulb is screwed fully into the socket.