Abstract: A field testable instrument housing connection for field testing of multiple seal connections between concentric metal tubes and hermetically sealed instrument housings.

Abstract: A method for measuring a time-variant magnetic field using a magnetoelectric sensor having mechanical resonant frequency fR, wherein the magnetic field has at least one component having harmonic time dependence with the measuring signal amplitude to be determined Hmess0 and the measuring signal frequency to be determined fmess in a known frequency interval fmin<fmess<fmax. The method includes: a. superimposing the magnetic field with a modulation magnetic field having harmonic time dependence with the known modulation amplitude Hmess0 and a selectable modulation frequency on the sensor, b. varying (wobbling) the modulation frequency over a complementary frequency interval determined by the known interval limits fmin, fmax and the resonant frequency of the sensor, c. measuring the sensor signal for each selected modulation frequency, d. searching for the at least one modulation frequency fmod, which results in a sensor signal in the mechanical resonance of the sensor, e.

Abstract: An actuator for operating downhole tools includes a tool body and one or more members configured to perform a wellbore task. The tool may include a sealed power and a driven section in pressure communication with the wellbore. A magnetic coupling magnetically connects the power section to the driven section. The power section may include an electric motor; and the driven section may include a speed reducer/torque increaser. In some embodiments, the member may be a positioning member. The positioning member may be manipulated to position a sensor that is configured to measure a parameter of interest. In other embodiments, the member may be an element such as cutting elements that cut wellbore tubulars. In aspects, a method for actuating or operating downhole tools includes using an actuator that utilizes a magnetic coupling to convey energy across a pressure boundary.

Abstract: An actuator for operating downhole tools includes a tool body and one or more members configured to perform a wellbore task. The tool may include a sealed power and a driven section in pressure communication with the wellbore. A magnetic coupling magnetically connects the power section to the driven section. The power section may include an electric motor; and the driven section may include a speed reducer/torque increaser. In some embodiments, the member may be a positioning member. The positioning member may be manipulated to position a sensor that is configured to measure a parameter of interest. In other embodiments, the member may be an element such as cutting elements that cut wellbore tubulars. In aspects, a method for actuating or operating downhole tools includes using an actuator that utilizes a magnetic coupling to convey energy across a pressure boundary.

Abstract: Hydrogen peroxide is produced by reacting hydrogen and oxygen in the presence of a noble metal catalyst in a liquid reaction medium, the reaction being performed in the presence of a sulfuric acid alkyl ester. In the presence of sulfuric acid alkyl esters the noble metal catalyst exhibits a high and lasting activity for the formation of hydrogen peroxide with an elevated selectivity of hydrogen peroxide formation relative to the hydrogen used. Solutions of hydrogen peroxide in methanol obtainable by the process are suitable for use for the epoxidation of olefins.

Abstract: An optical imaging device for visually inspecting an optical element is described. The optical imaging device comprises an optical connector interface adapted for connecting the optical imaging device to the optical element, an imaging unit adapted for acquiring image data of the optical element's surface, and a display for visualizing the image data. The optical imaging device further comprises a focus evaluation facility adapted for deriving a focus evaluation value indicating the instantaneous image definition of the acquired image, said focus evaluation value being derived from at least one of: the acquired image data itself and additional signals related to the position of the imaging unit relative to the surface of the optical element. The focus evaluation value is usable as a focussing aid for either automatically or manually adjusting the focus.

Abstract: The invention is directed to the preparation of organic or aqueous-organic hydrogen peroxide solutions by direct synthesis from a non-explosive gaseous mixture containing hydrogen and oxygen. The process is carried out in the presence of a noble metal catalyst, using a reaction medium containing a halide and a strong acid. It can be performed in a stainless steel reactor without corrosion occurring to the reactor material if, during the reaction, the surface of the stainless steel is, at no place, in permanent contact with the gaseous mixture passing through the reactor.

Abstract: Hydrogen peroxide is produced by reacting hydrogen and oxygen in the presence of a noble metal catalyst in a liquid reaction medium, the reaction being performed in the presence of a sulfuric acid alkyl ester. In the presence of sulfuric acid alkyl esters the noble metal catalyst exhibits a high and lasting activity for the formation of hydrogen peroxide with an elevated selectivity of hydrogen peroxide formation relative to the hydrogen used. Solutions of hydrogen peroxide in methanol obtainable by the process are suitable for use for the epoxidation of olefins.

Abstract: The invention is directed to the preparation of organic or aqueous-organic hydrogen peroxide solutions by direct synthesis from a non-explosive gaseous mixture containing hydrogen and oxygen. The process is carried out in the presence of a noble metal catalyst, using a reaction medium containing a halide and a strong acid. It can be performed in a stainless steel reactor without corrosion occurring to the reactor material if, during the reaction, the surface of the stainless steel is, at no place, in permanent contact with the gaseous mixture passing through the reactor.

Abstract: Extrudable materials are provided in a pre-packaged disposable container. The container includes a first end having a dispensing aperture and a second end containing a shuttle that may be advanced within the container to dispense or extrude the contents. The shuttle is advanced towards the dispensing aperture in incremental amounts corresponding to the desired amount of contents to be extruded. Advancement of the shuttle may be accomplished using an extruding device integral with the container or from a separate extruding device. The container and shuttle are configured such that when the shuttle is advanced to a position proximate to the first end, the shuttle is locked so as to prevent rearward retraction of the shuttle back to the second end of the container. When the desired quantity of food has been prepared, the user recycles or disposes of the container, eliminating or greatly reducing the necessary amount of required cleanup.

Abstract: An instrument is described for the measurement of optical and/or electrical signals, such as an optical time domain reflectometer (OTDR) or an electrical time domain reflectometer (TDR). The instrument includes a display to depict a waveform representative of measured signals, and can be operated by a few buttons, namely a start/stop button, a cursor-key and a select/confirmation-key. After adjustment of display parameters, almost the entire display is available for display of measured signals and data.