摘要:
The invention relates to a ground surface marker and method for surface marking. It is known to apply surface markings, for example road markings, using paint. Many current road marking paints have a touch dry time from about five minutes to one hour, with full drying taking 24 hours or more, depending on the air temperature. The dry time of current paints can delay the opening of a road which may be costly because it increases the need for traffic control and can expose contractors to motoring hazards. If roads are opened prior to full drying of the paint, then the road markings may be compromised by contact with vehicle wheels. The invention aims to go at least some way toward addressing these problems by providing a ground surface marker comprising a paint applicator, a dispenser associated with reflectors, and a UV light source.
摘要:
A system for producing hydrocarbons from a subsea wellbore includes a primary conductor extending into the seabed. In addition, the system includes a wellhead disposed at an upper end of the primary conductor. Further, the system includes a multi bore tubing hanger seated in the wellhead. Still further, the system includes a production tree mounted to the wellhead. The production tree includes a spool body and a production spool extending radially from the spool body. The production spool has an end comprising a connector. Moreover, the system includes a rotatable production guide base coupled to the primary conductor and configured to rotate about the wellhead. The production guide base includes a rigid alignment spool. The alignment spool has a first end releasably coupled to the production spool, a second end comprising a second connector, and non-linear deviation positioned between the first end and the second end.
摘要:
A method for transforming a selected polymeric material into a plurality of reaction products via supercritical water is disclosed. The method comprises: conveying the selected polymeric material through an extruder, wherein the extruder is configured to continuously convey the selected polymeric material to a supercritical fluid reaction zone; injecting hot compressed water into the supercritical fluid reaction zone, while the extruder is conveying the selected polymeric material into the supercritical fluid reaction zone so as to yield a mixture; retaining the mixture within the reaction zone for a period of time sufficient to yield the plurality of reaction products. The reaction zone may be characterized by a tubular reactor having an adjustably positionable inner tubular spear, wherein the tubular reactor and the inner tubular spear further define an annular space within the reaction zone, and wherein the mixture flows through the annular space and into a reaction products chamber.
摘要:
Disclosed herein are supercritical fluid biomass conversion machines, systems, and methods for converting a wide range of biomass materials into a plurality of reaction products including fermentable sugars and various aromatic substances. In one embodiment, a method is disclosed that comprises the steps of: providing an extruder; conveying a mixture of the selected biomass material and water through the extruder and into a supercritical fluid biomass conversion zone; heating and further pressurizing the mixture within the supercritical fluid biomass conversion zone to yield at least supercritical water, wherein heat energy is supplied by means of an induction heating coil positioned circumferentially about the supercritical fluid biomass conversion zone; retaining the mixture within the supercritical fluid biomass conversion zone for a period of time sufficient to yield the plurality of reaction products; and separating the plurality of reaction products into at least a water soluble fraction and an organic solvent soluble fraction.
摘要:
A supercritical fluid polymer depolymerization machine is disclosed herein, which machine is capable of converting a wide range of biomass and/or waste plastic materials into a plurality of reaction products (liquid and gaseous) including fermentable sugars, hydrocarbons, and various aromatic substances that, in turn, are readily convertible into liquid transportation fuel known as “neodiesel.” In one embodiment, a supercritical fluid reaction apparatus for transforming a selected polymeric material flowstream into a plurality of reaction products is disclosed and comprises, in fluidic series: an extruder; a supercritical fluid reaction zone fluidicly connected to the extruder, the supercritical fluid reaction zone being proximate to a circumferentially positioned heater, with the heater being configured to transfer heat to the selected polymeric material flowstream admixed together with water to supercritical conditions to thereby facilitate chemical reaction; and a reaction products separation chamber fluidicly connected to the supercritical fluid reaction zone.
摘要:
Disclosed herein are supercritical fluid biomass conversion machines, systems, and methods for converting a wide range of biomass materials into a plurality of reaction products including fermentable sugars and various aromatic substances. In one embodiment, a method is disclosed that comprises the steps of: providing an extruder; conveying a mixture of the selected biomass material and water through the extruder and into a supercritical fluid biomass conversion zone; heating and further pressurizing the mixture within the supercritical fluid biomass conversion zone to yield at least supercritical water, wherein heat energy is supplied by means of an induction heating coil positioned circumferentially about the supercritical fluid biomass conversion zone; retaining the mixture within the supercritical fluid biomass conversion zone for a period of time sufficient to yield the plurality of reaction products; and separating the plurality of reaction products into at least a water soluble fraction and an organic solvent soluble fraction.
摘要:
A delay compensation circuit for a delay locked loop which includes a main delay line having a fine delay line comprising fine delay elements and a coarse delay line comprising coarse delay elements, the main delay line being controlled by a controller, the delay compensation circuit comprising: an adjustable fine delay for modeling a coarse delay element, a counter for controlling the adjustable fine delay to a value which is substantially the same as that of a coarse delay element, a circuit for applying a representation of the system clock to the delay compensation circuit, and a circuit for applying the fine delay count from the counter to the controller for adjusting the fine delay line of the main delay line to a value which is substantially the same as that of a coarse delay element of the main delay line.
摘要:
A clock applying circuit for a synchronous memory is comprised or a clock input for receiving a clock input signal, apparatus connected to the synchronous memory for receiving a driving clock signal, and a tapped delay line for receiving the clock input signal and for delivering the clock driving signal to the synchronous memory in synchronism with but delayed from the clock input signal, the delay being a small fraction of the clock period or the clock input signal.
摘要:
A power saving circuit for metal oxide silicon field effect transistors (MOSFETS) comprised of an MOS circuit comprising low threshold voltage MOSFETs, at least one MOS FET switch connected in series between the low threshold MOSFET and a power rail, at least one MOSFET switch being of low threshold voltage type similar to MOSFETS used in the MOS circuit, and apparatus for applying at least one control signal to the at least one MOSFET switch for enabling the at least one MOSFET switch to turn on and off, the at least one control signal having a voltage of at least one of VPP and VBB, wherein VPP is more positive than a normal power rail operating voltage VDD, and VBB is more negative than a normal opposite power rail operating voltage VSS.
摘要:
The present invention relates to a method of writing or reading a semiconductor random access memory (DRAM or SRAM) having plural sense amplifiers connected to bit lines and having data bus read and write amplifiers, formed of providing a pair of data buses for access by each sense amplifier and each read and write amplifier, reading or writing one data bus while precharging the other data bus during a first read or write cycle, and reading or writing the other data bus while precharging the first data bus in a second read or write cycle following the first read or write cycle.