Abstract: Cylindrical optical components of quartz glass are known, which have an inner zone made of an inner zone glass, which extends in the direction of the longitudinal axis and is surrounded by a jacket zone made of a jacket zone glass, the average pt wall thickness thereof varying at least over a part of its length in the direction of the longitudinal axis of the component. The aim of the invention is to provide a method that allows a simple and cost-effective production of such an optical component from quartz glass.

Abstract: To operate an internal combustion engine of a motor vehicle, during a plurality of driving cycles of the motor vehicle at least one operating variable is recorded during each run which is representative of a harmful substance content of an exhaust gas of the internal combustion engine. The recorded runs are analyzed with respect to recurring run patterns. In a current driving cycle of the motor vehicle, a target value of an ammonia charge level of an exhaust gas catalyst of the internal combustion engine is determined using the recurring run pattern, depending on which, at least one actuating signal for an actuator is determined, the position of which affects an actual ammonia charge level of the exhaust gas catalyst. In order to convert the determined target value of the ammonia charge level of the exhaust gas catalyst, the actuator is controlled as a function of the actuating signal.

Abstract: A known refraction-sensitive optical fiber comprises a core zone with an index of refraction nK, a jacket zone surrounding the core zone, said jacket zone having an index of refraction nM, and an annular zone made of quartz glass doped with fluorine, said annular zone surrounding the jacket zone and having an index of refraction NF, where nF<nM<nK. With this as a starting point, an optical fiber is to be provided that is characterized by high refraction-sensitivity, good spliceability and compatibility, and a method is to be provided for cost-effective manufacture of such a fiber. With regard to the method, this object is accomplished according to the invention in that the quartz glass of the annular zone (21) is produced in a plasma deposition process on the outside in which an annular zonal layer made of the quartz glass doped with fluorine is produced on a substrate body (20), said layer having a layer thickness of at least 1 mm and an index of refraction nF<1.

Abstract: In a method and device for controlling an exhaust gas post-treatment for an internal combustion engine with at least one cylinder (Z1-Z4) and one combustion chamber (26) and one exhaust gas tract (14) in which is disposed an SCR catalyst (34), a humidity parameter (HDT EXH) of an exhaust gas in the exhaust gas tract (14) is determined upstream of the SCR catalyst (34) of the internal combustion machine. A control signal for an actuator for introducing ammonia into the exhaust gas is determined as a function of the humidity parameter (HDT_EXH) of the exhaust gas, and the actuator is adjusted accordingly.

Abstract: In an internal-combustion engine exhaust gas system, a storage tank stores the reducing agent, a supply pipe connects the storage tank to a metering unit which introduces the reducing agent into the exhaust gas system. A pump mechanism within the supply pipe conveys the reducing agent. A pressure sensor detects the pressure in the supply pipe downstream of the pump, and a pressure-releasing device has a return pipe connected to the storage tank and comes off the supply pipe. A first valve system is arranged in the supply pipe. A section of the return pipe is located at a higher level than the return pipe to form a storage volume for air present in the supply pipe. A second valve system is arranged in the supply pipe to create, when the second valve system is closed, a storage volume for pressurized reducing agent by way of this pipe branch.

Abstract: The present invention relates to a nanoparticulate composition comprising nanoparticles with a particle-size distribution of d90?10 ?m, and optionally a surface-active agent. The present invention further relates to a method for the production of such a nanoparticulate composition.

Abstract: A method and a device for controlling a glow plug in a combustion engine, where a state of aging A of the glow plug is ascertained, and the control of the glow plug is influenced as a function of the state of aging A of the plug.

Abstract: A door for a refrigeration device having an internal wall and an external and a thermally insulting layer sandwiched between the walls. The external wall is divided into a first section that is covered with a decorative panel to match the surrounding furniture and an undecorated exposed second section. The first and second sections can be connected in two parts at the level of an undercut edge formed therebetween.

Abstract: A method for monitoring at least one glow plug of an internal combustion engine in which a time-dependent variable, which characterizes the current flowing through the at least one glow plug, is compared for fault recognition to at least one time-dependent minimum and/or maximum threshold value, and a fault is recognized if the time-dependent variable is greater and/or less than the minimum and/or maximum threshold value. The method is characterized in that the first derivative of the time-dependent variable is compared to the first derivative of the maximum threshold value and the second derivative of the time-dependent variable is compared to the second derivative of the maximum threshold value, and a fault is recognized if the first derivative of the time-dependent variable is less than the first derivative the maximum threshold value, and the second derivative of the time-dependent variable is less than the second derivative of the maximum threshold value.

Abstract: In a method for adapting the reducing agent feed in an exhaust gas aftertreatment system having an SCR catalyst for removing nitrogen oxides from the exhaust gas of an internal combustion engine and at least one reducing agent feed device, the minimum opening time of the reducing agent feed device is determined during operation and while suspending nitrogen emission, carrying out the following steps: a) the opening time of the reducing agent feed device is gradually prolonged until b) a reducing agent-sensitive sensor in the exhaust gas aftertreatment system detects a reducing agent signal. An exhaust gas aftertreatment system is designed accordingly for carrying out the method and a device is designed for controlling an exhaust gas aftertreatment system.

Abstract: A method for controlling an SCR-exhaust gas after-treatment system (1) of an internal combustion engine (8), in particular of an internal combustion engine of a motor vehicle, has one or more steps for determining the quality of the reducing means.

Abstract: A device (4) for introducing a liquid reducing agent (5) into an exhaust gas (6) of a combustion system (2) has a reservoir (20), a discharge element (23) for discharging the liquid reducing agent (5) into the exhaust gas (6), a feed line (22), interposed between the reservoir (20) and the discharge element (23), a delivery element (26) arranged in the feed line (22) for delivering the liquid reducing agent (5) in a direction of delivery (29) from the reservoir (20) to the discharge element (23). The feed line (22) is associated with a controllable venting element (34) upstream of the delivery element (26), the discharge element (23) is connected to the reservoir (20) via a return line (32) and a controllable shut-off element (36) is arranged in the return line (32).

Abstract: A control device and a method for controlling several master axes in a machine, for example a production machine, is disclosed. The disclosed method includes the steps of defining profiles of desired values for a plurality of master axes, determining for each master axis a current desired value and also a current desired value for a slave axis using a logic combination rule, controlling a first drive in accordance with the current desired value of the slave axis, and if the dynamics controlling the first drive exceeds an upper dynamics limit, starting at the next clock pulse to modify determination of the current desired values for at least one of the master axes, and controlling the first drive with a reduced dynamics until the reduced dynamics falls below a lower dynamics limit.

Abstract: An item of cooling furniture includes two thermally separate compartments which are associated with respective evaporators. An expansion valve and evaporators are connected in series in a refrigerant circuit. The adjustment valve permits adjustment between different discrete flow coefficients.

Abstract: The production of an optical component from quartz glass, by elongation of a coaxial arrangement of a core rod and a hollow cylinder of a given length, is known. The arrangement is thus introduced into a heating zone with a vertical orientation, such that the lower end begins to partly soften and the component is drawn downwards from the softened part. The hollow cylinder has an inner passage, provided with a restriction in the region of the lower end thereof, on which the core rod is supported. Several methods are disclosed for formation of the restriction in which the inner passage (55) is mechanically machined to a final dimension and, in one version of the method, the restriction in the inner passage (55) is generated by means of softening the lower end face of the hollow cylinder, swaged against a tool and thus folded inwards with formation of a peripheral bead ring.

Abstract: A refrigerator door including an outer wall and an inner wall interconnected along longitudinal edges thereof and including a closing element fixed on an upper horizontal edge of the outer and inner walls. The interconnected closing element and the outer and inner walls delimit an insulating inner space therebetween. At the upper edges the outer wall is longer than the inner wall with the closing element bridging the difference in length between the walls. The resulting structure forming a space for a control panel covered by the outer wall when the refrigerator door is closed.

Abstract: The present invention provides a method of degrading a target protein in a subject comprising administrating to the subject an effective amount of any of: (a) a peptide comprising an HSC70-binding moiety and a target protein-binding moiety; and/or (b) a polynucleotide encoding the peptide of (a). The present invention further provides an isolated peptide comprising an HSC70-binding moiety and a target protein-binding moiety, an isolated polynucleotide encoding said peptide, and an expression vector comprising said polynucleotide.

Abstract: A thermal insulation material comprising a porous substrate made of a synthetic resin composition to which particles are applied that essentially have the shape of small plates. The average diameter of the particles can range from 0.1 times to 10 times the average diameter of the pores.

Abstract: A refrigerating appliance, especially a refrigerating or freezing appliance, including an inside area and an internal lighting system. The appliance internal lighting system includes at least one organic light-emitting diode (OLED) for substantially uniformly illuminating the inside area of the appliance.

Abstract: A device for triggering a heating element in a motor vehicle. At least one connection is designed, at least in part, as an element which is installed under mechanical stress. The element is connected, at least at a first contact, in such a way that the latter detaches when a temperature is exceeded.