Abstract: A combustion system includes a fuel and oxidant source that outputs fuel and oxidant, a first perforated flame holder, and a second perforated flame holder separated from the first perforated flame holder by a gap. The first and second perforated flame holders sustain a combustion reaction of the fuel and oxidant within the first and second perforated flame holders.

Abstract: A combustion system includes a distal flame holder, a pilot fuel distributor, a main fuel distributor, an oxidant source, an array of sensors, and a controller. The oxidant source outputs an oxidant. The pilot fuel distributor supports a pilot flame configured to preheat the distal flame holder by outputting a pilot fuel at least when the combustion system is in a preheating state. The main fuel source outputs a main fuel in the standard operating state. The distal flame holder is configured to support a combustion reaction of the main fuel and the oxidant in the standard operating state. The sensors are configured to sense parameters of the pilot flame and the distal flame holder and to output sensor signals to the controller. The controller executes software instructions that include adjusting the flow of the main fuel, the pilot fuel, and the oxidant responsive to the sensor signals.

Abstract: A product release system, method and device that enables product controllers to generate product listings for one or more products as well as one or more customized prepurchase events for each of the products. The product release system, method and device then executes the prepurchase events according to one or more pricing, timing and permission conditions specified for each of the prepurchase events, facilitates the purchasing of the products during the prepurchase events and notifies the product controllers of the results of the prepurchase events.

Abstract: A product release system, method and device that enables product controllers to generate product listings for one or more products as well as one or more customized prepurchase events for each of the products. The product release system, method and device then executes the prepurchase events according to one or more pricing, timing and permission conditions specified for each of the prepurchase events, facilitates the purchasing of the products during the prepurchase events and notifies the product controllers of the results of the prepurchase events.

Abstract: A releasable clamp which can be installed without using a wrench to tighten it on the fittings is disclosed. The lock nut and T bar embodiments enable the clamp to place a pre-set amount of clamping pressure on a pair of pipe fittings so as to minimize the gasket compression into the pipe's flow path.

Abstract: This specification discloses an in-line sight device sealed of a transparent tube surrounded by a tube body having a window. The tube body is attached to at least one flange via an attachment device which avoids any torque on the seal gasket. The flange and tube body are in direct contact with each other and the seal gasket is between the transparent tube and the flange having pressure applied in the same fixed volume and pressure each time the device is assembled.

Abstract: A product release system, method and device that enables product controllers to generate product listings for one or more products as well as one or more customized prepurchase events for each of the products. The product release system, method and device then executes the prepurchase events according to one or more pricing, timing and permission conditions specified for each of the prepurchase events, facilitates the purchasing of the products during the prepurchase events and notifies the product controllers of the results of the prepurchase events.

Abstract: A product release system, method and device that enables product controllers to generate product listings for one or more products as well as one or more customized prepurchase events for each of the products. The product release system, method and device then executes the prepurchase events according to one or more pricing, timing and permission conditions specified for each of the prepurchase events, facilitates the purchasing of the products during the prepurchase events and notifies the product controllers of the results of the prepurchase events.

Abstract: Processes and apparatus for preparing bimodal polymers are provided. In some embodiments, processes include introducing a monomer, a first diluent, a catalyst, hydrogen, at a first hydrogen concentration, and optional comonomer, to a first loop reactor to produce, under polymerization conditions, a first slurry of polymer solids. Processes may also include continuously discharging the first slurry of polymer solids from the loop reactor as a first polymerization effluent to a first flash tank; separating the first polymerization effluent in the first flash tank to provide a first concentrated polymer slurry with significantly lower hydrogen concentration; and transferring the first concentrated polymer slurry from the flash tank to a re-slurry mixer. Processes may further include introducing a re-slurry mixer diluent to the first concentrated polymer slurry to form a second concentrated polymer slurry in the re-slurry mixer that can be pumped to a second slurry loop reactor.

Abstract: A product release system, method and device that enables product controllers to generate product listings for one or more products as well as one or more customized prepurchase events for each of the products. The product release system, method and device then executes the prepurchase events according to one or more pricing, timing and permission conditions specified for each of the prepurchase events, facilitates the purchasing of the products during the prepurchase events and notifies the product controllers of the results of the prepurchase events.

Abstract: A product release system, method and device that enables product controllers to generate product listings for one or more products as well as one or more customized prepurchase events for each of the products. The product release system, method and device then executes the prepurchase events according to one or more pricing, timing and permission conditions specified for each of the prepurchase events, facilitates the purchasing of the products during the prepurchase events and notifies the product controllers of the results of the prepurchase events.

Abstract: Processes and apparatus for preparing bimodal polymers are provided. In some embodiments, processes include introducing a monomer, a first diluent, a catalyst, hydrogen, at a first hydrogen concentration, and optional comonomer, to a first loop reactor to produce, under polymerization conditions, a first slurry of polymer solids. Processes may also include continuously discharging the first slurry of polymer solids from the loop reactor as a first polymerization effluent to a first flash tank; separating the first polymerization effluent in the first flash tank to provide a first concentrated polymer slurry with significantly lower hydrogen concentration; and transferring the first concentrated polymer slurry from the flash tank to a re-slurry mixer. Processes may further include introducing a re-slurry mixer diluent to the first concentrated polymer slurry to form a second concentrated polymer slurry in the re-slurry mixer that can be pumped to a second slurry loop reactor.

Abstract: With proper care this cover will continue to protect your valuable 3D target for years. It is UV resistant and water resistant. These are the main two elements that cause damage to 3D targets. We have included two three foot nylon cords to be used for securing your cover to your target. You can use them by tying off to a stake from the top loops on your cover, or by using the lower loops and tying off directly to the legs. The cover will fit most targets up to 45? long. You may need to remove the horns when taking on and off the cover. However, most will fit through the hole with cinch down cord. This hole also allows moisture to escape from inside the cover. Please note: The color of your target cover may fade after long periods in direct sunlight. However, this will not affect the performance of your target cover. Glenrock Archery Products recommends periodic treatments with Nickwax “Tent and Gear Solar Proof”.

Abstract: Methods of making supported chromium catalyst systems and processes of polymerizing ethylene using the supported chromium catalyst systems are disclosed. A method of forming a catalyst system in a polymerization reactor includes contacting a supported chromium catalyst and a metal alkyl cocatalyst by cofeeding the catalyst and cocatalyst to the reactor or feeding the catalyst and cocatalyst separately to the reactor, to form a catalyst system. The catalyst and cocatalyst are not pre-contacted prior to the feeding or cofeeding step. The catalyst system can be contacted with ethylene and optional alpha-olefin comonomer to form polyethylene.

Abstract: A process/apparatus is disclosed for continuously separating a liquid medium comprising diluent and unreacted monomers from a polymerization effluent comprising diluent, unreacted monomers and polymer solids, comprising a continuous discharge of the polymerization effluent from a slurry reactor through a discharge valve and transfer conduit into a first intermediate pressure flash tank with a conical bottom defined by substantially straight sides inclined at an angle to that of horizontal equal to or greater than the angle of slide of the slurry/polymer solids and an exit seal chamber of such diameter (d) and length (l) as to maintain a desired volume of concentrated polymer solids/slurry in the exit seal chamber such as to form a pressure seal while continuously discharging a plug flow of concentrated polymer solids/slurry bottom product of the first flash tank from the exit seal chamber through a seal chamber exit reducer with inclined sides defined by substantially straight sides inclined at an angle to th

Abstract: Polymerization processes are disclosed for producing polyethylene having a target density and improved environmental stress resistance. Ethylene and optionally one or more ?-olefin comonomers, supported chromium catalyst, and metal alkyl cocatalyst are contacted to produce polyethylene. The density of the polyethylene is determined, and the concentration of cocatalyst is adjusted in response to a deviation between the density of the polyethylene and the target density. The catalyst and cocatalyst can be fed separately into the reactor, or can be co-fed, eliminating the need to pre-contact the catalyst and cocatalyst prior to introducing them into the reactor.

Abstract: A process/apparatus is disclosed for continuously separating a liquid medium comprising diluent and unreacted monomers from a polymerization effluent comprising diluent, unreacted monomers and polymer solids, comprising a continuous discharge of the polymerization effluent from a slurry reactor through a discharge valve and transfer conduit into a first intermediate pressure flash tank with a conical bottom defined by substantially straight sides inclined at an angle to that of horizontal equal to or greater than the angle of slide of the slurry/polymer solids and an exit seal chamber of such diameter (d) and length (l) as to maintain a desired volume of concentrated polymer solids/slurry in the exit seal chamber such as to form a pressure seal while continuously discharging a plug flow of concentrated polymer solids/slurry bottom product of said first flash tank from the exit seal chamber through a seal chamber exit reducer with inclined sides defined by substantially straight sides inclined at an angle to t

Abstract: A process/apparatus is disclosed for continuously separating a liquid medium comprising diluent and unreacted monomers from a polymerization effluent comprising diluent, unreacted monomers and polymer solids, comprising a continuous discharge of the polymerization effluent from a slurry reactor through a discharge valve and transfer conduit into a first intermediate pressure flash tank with a conical bottom defined by substantially straight sides inclined at an angle to that of horizontal equal to or greater than the angle of slide of the slurry/polymer solids and an exit seal chamber of such diameter (d) and length (l) as to maintain a desired volume of concentrated polymer solids/slurry in the exit seal chamber such as to form a pressure seal while continuously discharging a plug flow of concentrated polymer solids/slurry bottom product of said first flash tank from the exit seal chamber through a seal chamber exit reducer with inclined sides defined by substantially straight sides inclined at an angle to t

Abstract: A process/apparatus is disclosed for continuously separating a liquid medium comprising diluent and unreacted monomers from a polymerization effluent comprising diluent, unreacted monomers and polymer solids, comprising a continuous discharge of the polymerization effluent from a slurry reactor through a discharge valve and transfer conduit into a first intermediate pressure flash tank with a conical bottom defined by substantially straight sides inclined at an angle to that of horizontal equal to or greater than the angle of slide of the slurry/polymer solids and an exit seal chamber of such diameter (d) and length (l) as to maintain a desired volume of concentrated polymer solids/slurry in the exit seal chamber such as to form a pressure seal while continuously discharging a plug flow of concentrated polymer solids/slurry bottom product of said first flash tank from the exit seal chamber through a seal chamber exit reducer with inclined sides defined by substantially straight sides inclined at an angle to t

Abstract: Polymerization processes are disclosed for producing polyethylene having a target density and improved environmental stress resistance. Ethylene and optionally one or more &agr;-olefin comonomers, supported chromium catalyst, and metal alkyl cocatalyst are contacted to produce polyethylene. The density of the polyethylene is determined, and the concentration of cocatalyst is adjusted in response to a deviation between the density of the polyethylene and the target density. The catalyst and cocatalyst can be fed separately into the reactor, or can be co-fed, eliminating the need to pre-contact the catalyst and cocatalyst prior to introducing them into the reactor.