摘要:
Many linear alpha olefin (LAO) syntheses form a range of LAO products when oligomerizing ethylene in the presence of a Ziegler-type catalyst. The range of products typically requires a plurality of distillation columns to separate the LAO products up to a desired carbon count, but such approaches may be energy- and capital-intensive. LAO product separation using at least one dividing wall column may lessen these burdens. Methods for separating LAOs may comprise: providing a pre-processed product stream comprising Cg+ linear alpha olefins (LAOs) to a first of a series of distillation columns, at least one member of the series of distillation columns comprising a dividing wall column; and separating an overhead stream comprising a first LAO from the dividing wall column and one or more side streams from the dividing wall column, each side stream comprising a different LAO that also differs from the first LAO.
摘要:
Systems and methods delay a print job from being automatically rescheduled to a backup printer in response to an error at a printer scheduled to print the job. In one embodiment, a control system determines that a printer scheduled to print a job has an error condition, and identifies the error condition at the printer. The control system calculates a time delay based on the error condition before initiating a rescheduling process for the job to a backup printer. The control system initiates the rescheduling process if the time delay has expired, and cancels the rescheduling process if the error condition has ended before the time delay expires.
摘要:
Embodiments of an invention disclosed herein relate to processes utilizing solvent extraction to remove nitrogen containing compounds and optionally other components from feedstreams of olefins and paraffins.
摘要:
Peptides have been identified that bind with high affinity to dyed hair. Peptide-based hair reagents formed by coupling a dyed-hair-binding peptide to a benefit agent are described. The peptide-based hair reagents include peptide-based hair conditioners and hair colorants. The peptide-based hair conditioners and hair colorants are comprised of a dyed-hair-binding peptide coupled to a hair conditioning agent or a coloring agent, respectively. The peptide-based hair reagents or the dyed-hair-binding peptides may also be used as a protective sealant to improve color retention of dyed hair.
摘要:
A system for treating a hydrocarbon containing formation is described. The system includes two or more groups of elongated heaters. The group includes two or more heaters placed in two or more openings in the formation. The heaters in the group are electrically coupled below the surface of the formation. The openings include at least partially uncased wellbores in a hydrocarbon layer of the formation. The groups are electrically configured such that current flow through the formation between at least two groups is inhibited. The heaters are configured to provide heat to the formation.
摘要:
The present invention provides an improved coating for surfaces of medical implants. The coating comprises at least one interfacial biomaterial (IFBM) which is comprised of at least one binding module that binds to the surface of an implant or implant-related material (“implant module”) and at least one binding module that selectively binds to a target analyte or that is designed to have a desired effect (“analyte module”). The modules are connected by a linker. In some embodiments, the IFBM coating acts to promote the recognition and attachment of target analytes to surface of the device. The IFBM coating improves the performance of implanted medical devices, for example, by promoting osteointegration of the implant.
摘要:
Methods and systems resume workflow processing of a print job at intermediate steps of a print workflow. In one embodiment, a control system initiates processing of a print job based on steps in a print workflow, where the steps identify print shop activities to perform for the print job. The control system identifies an error in executing a step of the workflow, and identifies an intermediate step in the workflow that has executed in processing the print job. The control system identifies an updated file for the print job to correct the error, and resumes the processing of the print job at the intermediate step using the update file.
摘要:
The present invention provides compositions and methods for an improved coating for medical devices. Provided is an interfacial biomaterial or biofunctional coating composition comprising at least one binding domain that has bind specificity for a surface material of a medical device, and at least one binding domain that has binding specificity for an antimicrobial composition. Methods for coating a surface of a medical device, and for manufacturing of a medical device, comprise contacting the surface to be coated with the biofunctional coating material in an amount effective to form a coating.
摘要:
The presently disclosed subject matter provides compositions comprising a first substrate-binding domain (a peptide or a polymer) having binding affinity for a tissue or a medical device, a second substrate-binding domain having binding affinity for a target molecule, and the target molecule. In some embodiments, the first and second substrate-binding domains are covalently linked. The first and second substrate-binding domains are covalently coupled to at least one hydrophobic interaction tag, negatively charged interaction tag, or positively charged interaction tag. When the substrate-binding domains are combined and coated onto the tissue or medical device, the hydrophobic interaction tags interact with each other and the charged interaction tags interact with the oppositely charged interaction tags or the oppositely charged substrate binding polymers, to form a macromolecular network of non-covalently coupled substrate-binding domains to load the target molecule onto the tissue or medical device.
摘要:
The presently disclosed subject matter provides compositions comprising a first substrate-binding domain (a peptide or a polymer) having binding affinity for a tissue or a medical device, a second substrate-binding domain having binding affinity for a target molecule, and the target molecule. In some embodiments, the first and second substrate-binding domains are covalently linked. The first and second substrate-binding domains are covalently coupled to at least one hydrophobic interaction tag, negatively charged interaction tag, or positively charged interaction tag. When the substrate-binding domains are combined and coated onto the tissue or medical device, the hydrophobic interaction tags interact with each other and the charged interaction tags interact with the oppositely charged interaction tags or the oppositely charged substrate binding polymers, to form a macromolecular network of non-covalently coupled substrate-binding domains to load the target molecule onto the tissue or medical device.