Abstract: Waveguide nonlinear signal processors include transmission lines defined on a substrate. A plurality of varactors or pairs of varactors are situated along the transmission line and are in communication with a signal conductor of the transmission line and one or more control conductors. A processor controller is configured to provide a control signal to the one or more control conductors to select operational characteristics of the varactors or pairs of varactors. In some examples, the varactors are diodes and a control signal is provided to select a diode current-voltage characteristic in order to limit or clip an input signal to positive and/or negative amplitudes. Alternatively, a control signal is configured to provide a selected spectral transmission bandwidth or propagation delay by selecting a varactor capacitance-voltage characteristic.

Abstract: A packer fluid is provided for use with a wellbore fluid in an annulus or casing bore, having an aqueous portion which contains additives for preventing corrosion, microbiological activity, salt and scale deposition, and an environmentally-acceptable capping fluid which resides at a top of the wellbore to act as freeze protection and as thermal insulation in a the frost penetration layer. The additives in the packer fluid are particularly selected to exist in the aqueous additive fluid and in the wellbore fluid and to be substantially immiscible with the capping fluid and thereby prevent significant migration of the additives into the capping fluid which would compromise its environmental acceptability.

Abstract: Asphaltene control additives are added to base fluids which are introduced directly or indirectly into a hydrocarbon-bearing formation to mitigate asphaltene deposition in the formation which results in improved permeability in the formation and production of hydrocarbons therefrom. The fluids to which the additive is added may be liquid CO2-based, aqueous-based or non-aqueous-based fluids. Further, the fluids are fracturing fluids, drilling fluids and wellbore treatment fluids such as acidizing fluids.

Abstract: A clay stabilizer which is capable of inhibiting swelling in a wide variety of clay types and is also capable of restoring permeability in formations which have previously been damaged by clay swelling. Amine salts of differing molecular weights configurations and ionic strength are combined to provide transport into micropores, mesopores and macropores in the formation and to effect cationic change therein. A poly quaternary amine having a high to very high charge density is added along with lower molecular weight amine salts to substantially permanently exchange cations with the clay in the formation.

Abstract: An acidizing formulation for use in the stimulation of hydrocarbon production is stable when packaged and stored as a single fluid for periods exceeding one year. The formulation contains a miscibility solvent which substantially prevents any phase separation between the constituents and lack of dispersion of the additives in the fluid.

Abstract: The present invention relates, in general, to stem cells, and in particular, to a method of isolating stem cells and to reagents suitable for use in such a method. The invention further relates to stem cell populations isolatable in accordance with the present method.

Abstract: The present invention relates, in general, to stem cells, and in particular, to a method of isolating stem cells and to reagents suitable for use in such a method. The invention further relates to stem cell populations isolatable in accordance with the present method.

Abstract: A packer fluid is provided for use with a wellbore fluid in an annulus or casing bore, having an aqueous portion which contains additives for preventing corrosion, microbiological activity, salt and scale deposition, and an environmentally-acceptable capping fluid which resides at a top of the wellbore to act as freeze protection and as thermal insulation in a the frost penetration layer. The additives in the packer fluid are particularly selected to exist in the aqueous additive fluid and in the wellbore fluid and to be substantially immiscible with the capping fluid and thereby prevent significant migration of the additives into the capping fluid which would compromise its environmental acceptability.

Abstract: The present invention relates, in general, to stem cells, and in particular, to a method of isolating stem cells and to reagents suitable for use in such a method. The invention further relates to stem cell populations isolatable in accordance with the present method.

Abstract: The present invention relates, in general, to stem cells, and in particular, to a method of isolating stem cells and to reagents suitable for use in such a method. The invention further relates to stem cell populations isolatable in accordance with the present method.

Abstract: An apparatus and method are disclosed for generating a three-dimension image of an object or target. The apparatus is comprised of a photon source for emitting a photon at a target. The emitted photons are received by a photon receiver for receiving the photon when reflected from the target. The photon receiver determines a reflection time of the photon and further determines an arrival position of the photon on the photon receiver. An analyzer is communicatively coupled to the photon receiver, wherein the analyzer generates a three-dimensional image of the object based upon the reflection time and the arrival position.

Abstract: The present invention relates to hematopoietic stem cells and to methods of treating diseases and disorders, including genetic diseases and disorders and infectious diseases, using same. The invention additionally relates to methods of identifying agents that promote growth, engraftment or differentiation of stem cells.

Abstract: The present invention relates, in general, to a retroviral vector and, in particular, to a Moloney murine leukemia virus-based retroviral vector. The invention further relates to methods of introducing genetic elements into cells, including mammalian cells, using such a vector.

Abstract: A ramp, and a process for fabricating the ramp, wherein the ramp is reversible. First and second elongate side members which can be formed of an extruded magnesium alloy. A plurality of grates, each grate formed of die-cast aluminum, are positioned between the first and second side members to provide a load bearing platform. Tie rods are connected between the elongate side members by self-tapping screws, such that adjacent grates are separated and supported by an intermediate tie rod. Each grate has gripping nodules on upper and lower side surface thereof. One end of the ramp has a removable apron which is angularly oriented relative to the platform of the ramp for engaging with a generally flat surface, such as a dock or truck bed. The apron may be removed, the ramp turned over, and the apron re-positioned on the body of the ramp, thereby causing the upper and lower surfaces of the ramp to trade places.

Abstract: A vehicle rolling shutter system with magnetic door-ajar and compartment light switch. In combination with a vehicle, the rolling shutter system has a roller shutter, constructed of a number of interconnected links, for movement along guide rails positioned at opposing sides of an access opening to a cargo compartment of the vehicle. A lamp, for illuminating the cargo compartment, is positioned within the cargo compartment. An indicator lamp is positioned on a dashboard of the vehicle. The roller shutter has a lift bar which is mounted by mounting members to a lower portion of the roller shutter. The lift bar engages with strike blocks, positioned at opposing sides of the access opening to the cargo compartment, for retaining the roller shutter in a closed position. At least one of the strike blocks contains a magnetic switch element connected to the lamps.