摘要:
A light sensitive composition for the preparation of a positive acting photoresist which is a mixture of an alkali soluble resin and a compound of the formula ##STR1## wherein X is a naphthoquinone-(1,2)-diazide-(2)-sulfonyl residue.
摘要:
An exemplary embodiment providing one or more improvements includes determining a measurable characteristic of electrical activity in a user's brain and using the measurable characteristic to determine a present time emotional state of the user.
摘要:
A positioning device for people in hospital beds is disclosed. The device includes a sheet which is placed under the patient. This is connected by rope to an apparatus on the headboard of the bed. Either by the bed's existing motor, or an independent motor, the patient is moved up in bed towards the headboard. This action eliminates the need for two or more people for the job of positioning a person in bed. The chance of an on-the-job injury is also greatly reduced with this positioning aid.
摘要:
Photoinitiator compositions are disclosed which contain 3,3'-carbonyl bis(7-diethylaminocoumarin); an alkyl ester of a p-dialkylamino benzoic acid; and either camphorquinone or a 2,4,5-triphenylimidazolyl dimer. Photoinitiators are also provided which contain 3,3'-carbonyl bis(7-diethylaminocoumarin); an alkyl ester of a p-dialkylamino benzoic acid; camphorquinone and a 2,4,5-triphenylimidazolyl dimer. These latter photoinitiators are particularly useful in photopolymerizable compositions which are polymerized by exposure to visible laser light.