摘要:
Crop oil concentrates are disclosed which not only increase the herbicidal efficacy of herbicides from diverse chemical classes, but moreover assist in defeating the apparent antagonism which often arises when two or more herbicides are utilized together.
摘要:
Crop oil concentrates are disclosed which not only increase the herbicidal efficacy of herbicides from diverse chemical classes, but moreover assist in defeating the apparent antagonism which often arises when two or more herbicides are utilized together.
摘要:
Ready-to-Dilute (RTD) herbicide formulations containing crop oil type adjuvants are disclosed which may be added as is to water to form a tank mix for herbicide application. The formulations are storage stable for extended periods, provide for rapid self-emulsification, form a stable tank mix, and moreover provide equal or better herbicidal efficiency than tank mixes containing commercially available standard crop oils and standard herbicide formulations.
摘要:
Wild-type bacteria with polyurethanase activity, and the ability to excrete polyurethanase into a culture medium have been genetically altered to significantly increase their polyurethanase activity. Biologically pure cultures of these genetically altered are cultured in a medium containing an inducer for the production of polyurethanase. The bacteria are then removed from the culture medium to provide a preparation with a high polyurethanase activity. One useful genetically altered bacteria is a strain of Pseudomonas chlororaphis designated ATTC No. 55729. The polyurethanase-containing preparation may then be used directly to degrade polyurethane, particularly polyurethane and polyurethane-based coatings.
摘要:
Biological toxins are indirectly detected by using polymerase chain reaction to amplify unique nucleic acid sequences coding for the toxins or enzymes unique to toxin synthesis. Buffer, primers coding for the unique nucleic acid sequences and an amplifying enzyme are added to a sample suspected of containing the toxin. The mixture is then cycled thermally to exponentially amplify any of these unique nucleic acid sequences present in the sample. The amplified sequences can be detected by various means, including fluorescence. Detection of the amplified sequences is indicative of the presence of toxin in the original sample. By using more than one set of labeled primers, the method can be used to simultaneously detect several toxins in a sample.
摘要:
A machine or apparatus simultaneously manufacutures a core-reinforced welded panel and assembles core strips in operative relationship with the face sheets of said panel. The machine includes a first welding head which is insertable in the space between the face sheets and has welding electrode means thereupon which internally weld securement portions of the core strips to adjacent inner surfaces of face sheets of any desired thickness. The welding head includes movable jaws mounting the welding electrodes to move the welding electrodes into engagement with the securement portions of the core strips and the welding electrodes are resilient to permit them to move independently of the movable jaws and each electrode provides an electrically isolated weld. A second welding head is provided which is capable of securing web portions of the core strips by weldments to one another after the weldment of the core strips at their securement portions has been accomplished by the first welding head. Various adjustments and indexing mechanisms permit the machine to fabricate panels of different dimensions and different size core without the necessity for the extensive down-time necessitated by the utilization of prior art machines.
摘要:
A core strip blank is characterized by the provision at its opposite edges of folds or doublers and the resultant core strip has the folded edges disposed substantially normally to the web of the core strip to provide surfaces for the securement of face sheets to the opposite folded edges of the core strip. The resultant core strip can be provided in a variety of configurations and may incorporate such openings or notches as will facilitate the deformation of the core strip into the desired configuration.
摘要:
The fluorescent detection of target DNA is enhanced by amplifying the DNA in a sample by initiating a polymerase chain reaction using a first pair of primers and an appropriate polymerase. The DNA is then reamplified, this time using a second pair of nested primers which bracket DNA base sequences within the region bracketed by the first set of primers. At least one of the second pair of primers is bound to a fluorescent reporter molecule and at least one of the second pair of primers has bound thereto a specific binding site for a double-stranded DNA-binding protein. The thus amplified sample is then contacted with a fluorescent sensor having the appropriate double-stranded DNA-binding protein attached thereto. Then, the fluorescent reporter molecule is excited by light of the appropriate wavelength. The present invention provides greater sensitivity, adaptability and ease of use than previously available.
摘要:
A signaling arrangement where all terminal configuration data is stored in a switching system, but where each user terminal responds to a message from the system, defining one of the user terminal buttons as the selected call appearance at the terminal, by operating in a functional signaling mode to communicate with the system using functional messages concerning a call at the selected call appearance. Idle and ringing preference methods for use in terminating calls and auto-drop and auto-hold alternatives for use when moving from one call appearance to another are disclosed as well as methods for holding or dropping calls. Implicit and explicit conferencing methods are also disclosed.
摘要:
An apparatus is provided for forming a circular, honeycomb-type engine seal from pre-formed core strip having male and female nodes. The apparatus includes a source of strip and means for forming the strip into a circular seal configuration wherein the male and female nodes of the strip are automatically juxtaposed to each other for weldment as relative movement between the forming means and the source occurs to withdraw additional strip from the core strip source. As the relative movement continues, the juxtaposed male and female nodes are exposed to welding head means of the apparatus which welds the male and female nodes to one another. The forming means includes means for causing said relative movement constituted by drive means which is adjustable to permit forming means of different sizes to be utilized. The movement of the forming means permits successive layers or laminae of the strip to be welded to each other in circular form until a seal of the desired dimension is achieved. The method of the invention involves the step of simultaneously welding a plurality of male and female nodes which are juxtaposed to each other, and the additional step of welding pairs of nodes which are interspersed between previously welded pairs and the further step of utilizing the welding of a selected pair of nodes as a signal for the simultaneous weldment of additional pairs.