Abstract: Calibrating an unstable sensor of a mobile device. Systems and methods for calibrating a sensor of a mobile device determine a first estimated position of the mobile device without using any measurement from the sensor of the mobile device, generate a second estimated position of the mobile device using a measurement from the sensor, estimate a sensor error of the sensor using the first estimated position and the second estimated position, and use the sensor error to determine a calibration value for adjusting one or more measurements from the sensor.

Abstract: A pass-through dual containment fitting that protectively seals a portion of pass-through tubing has a fitting body that incorporates a first end, a second end and a collar, each having a longitudinal bore for receiving the pass-through tubing. The second end having an extending nose portion. A radially compressive sealing device is engagable with the first end of the fitting body. When the radially compressive sealing device is fully engaged with the first end a fluid-tight seal is formed between the device and the fitting body. A dual containment sealing device incorporates containment tubing having a flared end and a flared end fitting. The extending nose portion of the fitting body is inserted into the flared end. The flared end fitting engages the second end of the fitting body to compress the flared end to the extending nose portion to form a fluid-tight seal between the dual containment sealing device and the fitting body.

Abstract: A method for evaluating a batch of scrap material, subsequent to processing of the batch, to determine the content of precious metal present in the batch prior to processing of the batch, includes introducing a predetermined amount of a tracer into the batch, prior to processing, processing the batch and the tracer into a homogenous mixture, assaying a sample portion of the homogenous mixture to assess the amount of tracer in the sample portion, and to assess the amount of precious metal in the sample portion, and ascertaining the content of the precious metal in the batch prior to processing of the batch by applying to the assayed amount of the precious metal a ratio between the predetermined amount of tracer introduced into the batch prior to processing and the assessed amount of tracer in the sample portion.

Abstract: Methods of manufacturing fully annealed metal anodes are disclosed. The methods contemplate supplying metal and heating the metal until it has obtained a molten state. The molten metal is permitted to flow into a die and transported therethrough where it is cooled until it solidifies. The flow rate of the metal through the die and the extent of cooling are selected such that a fully annealed metal anode is obtained.

Abstract: A hammock construction includes an elongated, tubular frame having symmetrical serpentine end portions which are supported above a supporting surface, and further includes a hammock which is supported between the end portions of the frame with hanger assemblies. The frame is supported either on two transverse legs or on a central rotatable pedestal which allows the hammock to rotate with respect to the supporting surface. The hanger assemblies each consist of an extension rod connected to a respective end of the frame, a V-shaped hanger rod and a hanger spar. The extension rod includes a plurality of reverse, or serpentine, bends therein for adjustably receiving the hanger rod of the hanger assembly. The hanger spar consists of an elongated tubular rod having a longitudinal groove therein. The V-shaped hanger rod includes two legs which diverge outwardly from an apex terminating in free ends. The free ends of the hanger rod are bent inwardly and are received into the open ends of the tubular hanger spar.

Abstract: An improved tubing connector assembly for coupling flexible tubing and forming a fluid tight seal is described. The tubing connector assembly includes a connector threadably engaging a nut to fully enclose a ferrule and a collet. Due to the surface interactions between the components of the invention, the ferrule and collet are axially compressed to grasp the tubing and obtain a very strong mechanical grip.

Abstract: A method for incorporating radioactive phosphoric acid solutions in concrete is described wherein the phosphoric acid is reacted with Ca(OH).sub.2 to form a precipitate of hydroxyapatite and the hydroxyapatite is mixed with portland cement to form concrete.

Abstract: A method for producing boracites is disclosed in which a solution of divalent metal acetate, boric acid, and halogen acid is evaporated to dryness and the resulting solid is heated in an inert atmosphere under pressure.