Abstract: A herbicidal composition to selectively control undesirable epiphytic weeds by applying active ingredients in an effective amount of Atrazine, Simazine, Dichlobenil, Atrazine+Dichlobenil, Simazine+Dichlobenil and the surfactant Tween 80.

Abstract: An enhanced user interface for a remote terminal which include a technique of allowing users to define the order in which data is entered, define what particular function keys represent, and to display certain fields in a customize manner.

Abstract: A plurality of service centers, disbursed throughout a telecommunications network such as the public switched telephone system (PSTN), competitively bid for the rights to service a particular call to be serviced from one of the service centers. After comparing the cost (or other parameter to be optimized) of servicing a call from the numerous different service centers, the cost (or other parameter) of the call is minimized (optimized) by assigning it to the service center which can service the call at the lowest possible cost (best value of any other parameter).

Abstract: A computerized system for forming a computer based communications network of network members inclusive of network buyers and or network vendors for processing requests for quotation for goods and services through at least one central processing unit including operating system software for controlling the central processing unit, storage means containing the identification of network members, means for network buyers to generate request for quotation for goods and/or services, means for transmitting said request for quotation to said central processing unit, filter means for selecting appropriate network members to receive said request for quotation based on filter conditions defined by the buyer in said request for quotation and/or by the vendor and/or by the central processing unit, means for broadcasting said request for quotation to the network members selected by said filter means and means for responding to the generator of said request for quotation with either a response to said request for quotation o

Abstract: A double matrix band and technique for using the same is utilized in tooth repair to minimize interproximal spacing. The first portion of the matrix band is wrapped around the tooth adjacent to that being repaired, and the second portion of the band is then wrapped around the tooth to be repaired. Light permeable materials may be used for the matrix bands, thereby allowing tooth repair with light curable materials.

Abstract: A double matrix band and technique for using the same is utilized in tooth repair to minimize interproximal spacing. The first portion of the matrix band is wrapped around the tooth adjacent to that being repaired, and the second portion of the band is then wrapped around the tooth to be repaired. Light permeable materials may be used for the matrix bands, thereby allowing tooth repair with light curable materials.

Abstract: A tone blocking system for use preferably in conferencing systems in order to prevent control tones from being transmitted to other conferees is disclosed. The buffer length used to process the signal and detect tones is varied, being increased when a tone is suspected to allow for sophisticated tone detection algorithms, and being decreased when silence is present by trimming the silence away. The technique minimizes delay, and its degrading effect on echo, but nonetheless provides for a lengthy buffer required to do reliable tone detection. The invention is applicable to any signal other than tone as well.