Abstract: The present invention relates to a new compound and the dehydrogenation of that compound to produce retinal.

Abstract: The present invention relates to the functionalisation of specific 1,3-alpha-dienes (by hydroboration). These functionalized 1,3-alpha-dienes are important intermediates in organic synthesis (especially in the synthesis of carotenoids, vitamin A and/or vitamin A derivatives).

Abstract: A crash management system (1, 1?, 1?) for a front part of a vehicle, oriented in a local referential, having a longitudinal direction X a transverse direction Y perpendicular to the longitudinal direction X and a vertical direction Z perpendicular to the plane defined by said directions X and Y, comprising an assembly (2, 2?, 2?) of bumper beams with at least a first bumper beam (3, 3?, 3?) and a second bumper beam (4, 4?, 4?), oriented in said transverse direction Y, said first bumper beam (3, 3?, 3?) and second bumper beam (4, 4?, 4?) being vertically spaced wherein said first bumper beam (3, 3?, 3?) is located above said second bumper beam (4, 4?, 4?), optionally comprising at least one crash box (5, 6) connected to at least a bumper beam (3, 3?, 3?, 4, 4?, 4?), and comprising at least a connecting element (100, 200,300, 400, 500) characterized in that said connecting element (100, 200,300, 400, 500) connects said first bumper beam (3, 3?, 3?) and said second bumper beam (4, 4?, 4?), and wherein said conne

Abstract: A joint for an orthopedic device, the joint comprising: a first element; a spring support mounted to the first element and having at least one spring element; and a second element, the second element being pivotally mounted to the first element in a first swiveling direction counter to a first force applied by the at least one spring element and in an opposite second swiveling direction counter to a second force applied by the at least one spring element.

Abstract: A surgical microscope for generating an image of an object region includes an eyepiece and an objective conjointly defining a viewing beam path, an image capturing device and a beam path switching device for out-coupling image information. The switching device is switchable between a first switching state wherein light in the viewing beam path is split into a first component along a first beam path to the eyepiece at an intensity IT1 and a second component along a second beam path to the image capturing device at an intensity IT2 and a second switching state wherein the light in the viewing beam path is deflected into the second beam path to the image capturing device at an intensity IU. The switching device includes a beam splitter movable in and out of the viewing beam path and a deflecting element movable into and out of the viewing beam path.

Abstract: The disclosure relates to an optical system and to a method for operating an optical system, wherein the optical system includes at least one carrier having at least one optical element, a movement bearing element for supporting the carrier during a movement, at least one first bearing element and at least one further bearing element for statically supporting the carrier, wherein the carrier includes corresponding bearing elements for providing static support, wherein the optical system includes a first and a further end stop element, wherein the carrier is supported movably between the end stop elements, wherein the first end stop element has or forms the first bearing element for providing static support and the further end stop element has or forms the further bearing element for providing static support, wherein the bearing elements define the stop poses of the carrier with repetition accuracy.

Abstract: Methods for driving a tunable laser with integrated tuning elements are disclosed. The methods can include modulating the tuning current and laser injection current such that the laser emission wavelength and output power are independently controllable. In some examples, the tuning current and laser injection current are modulated simultaneously and a wider tuning range can result. In some examples, one or both of these currents is sinusoidally modulated. In some examples, a constant output power can be achieved while tuning the emission wavelength. In some examples, the output power and tuning can follow a linear relationship. In some examples, injection current and tuning element drive waveforms necessary to achieve targeted output power and tuning waveforms can be achieved through optimization based on goodness of fit values between the targeted and actual output power and tuning waveforms.

Abstract: Disclosed is a Vernier effect DBR laser that has uniform laser injection current pumping along the length of the laser. The laser can include one or more tuning elements, separate from the laser injection element, and these tuning elements can be used to control the temperature or modal refractive index of one or more sections of the laser. The refractive indices of each diffraction grating can be directly controlled by temperature changes, electro optic effects, or other means through the one or more tuning elements. With direct control of the temperature and/or refractive indices of the diffraction gratings, the uniformly pumped Vernier effect DBR laser can be capable of a wider tuning range. Additionally, uniform pumping of the laser through a single electrode can reduce or eliminate interfacial reflections caused by, for example, gaps between metal contacts atop the laser ridge, which can minimize multi-mode operation and mode hopping.

Abstract: A crash box (3) comprising a hollow profile (38) extending along a longitudinal direction (X) and having a crush length (LCB), said hollow profile (38) having at least two chambers (4) characterized in that it comprises at least a deformable element (7, 7?, 7?) contained into at least one chamber (4) contributing to the energy absorption capability of said crash box (3).

Abstract: A stand for a surgical microscope includes a digiscope and an imaging unit which are interconnected and mounted on an arm of the stand at a joint rotatably about an axis of rotation. The digiscope and the imaging unit are arranged on a bridge such that a fixed spatial relationship, in particular a distance larger than zero between the digiscope and the imaging unit during a relative movement between the digiscope and the patient is maintained. A method for configuring a stand with a bridge includes determining distances between eyes of a surgeon and the imaging unit, between the surgeon and an operating field, between the receptacle of the digiscope and the operating field, and between the imaging unit and the receptacle of the digiscope, and determining a length of the bridge to optimally set a distance from the surgeon to the patient and the imaging unit for the surgeon.

Abstract: The present invention relates to new specific enol esters of formula (I) as well as to a process for their production by acylation of the corresponding dihydroretinal analogue. In formula (I) R is —COR? where R? is a C1-C16 alkyl group.

Abstract: The present invention relates to a new process for the production of retinal or hydrogenated form of retinal.

Abstract: The application relates to a process for the preparation of a compound of formula (II) by cyclisation of a polyene of formula (I), and to an intermediate of formula (III). The obtained compounds are useful intermediates in the preparation of specific isoprenoids, preferably in the production of vitamin A and derivatives of vitamin A.

Abstract: A disclosed fan system includes a housing having side walls, an inflow side, and an outflow side; a fan secured in the housing by a mounting; and a backflow blocker mounted to the side walls within the housing on the outflow side of the housing partially blocking a cross-sectional area of the outflow side. The backflow blocker is positioned approximately centrally in a flow path of the housing and is configured to block part of an airflow cross section such that, between side walls of the housing and side walls of the backflow blocker, an annular duct is formed as an air passage. Further, the backflow blocker has a thickness that is greater than 5% of a width of the housing, and is less than 20% of an axial design height of the fan system.

Abstract: The present invention relates to a new dehydrogenation process of specific compounds.

Abstract: The present invention relates to new specific enol esters of formula (I) as well as to a process for their production. In formula (I) R is COR? where R? is a C1-C16 alkyl group.

Abstract: Processes for synthesizing new compounds that may usefully be employed in organic synthesis, especially in the synthesis of vitamin A or ?-carotene and derivatives thereof, e.g. canthaxanthin, astaxanthin or zeaxanthin are disclosed. The new compounds are especially useful as intermediates (building blocks) in the synthesis of vitamin A or ?-carotene, preferably vitamin A.

Abstract: A method for determining a mechanical load to which a component was exposed. The component comprises at least one sensor that is arranged in a force flow of the mechanical load and that emits a measurement signal in the event of a mechanical load.

Abstract: The present invention relates to novel compounds of the formula (II) and formula (III) that can be employed in the selective Tau detection of disorders and abnormalities associated with Tau aggregates such as Alzheimer's disease and other tauopathies using Positron Emission Tomography (PET) Imaging.

Abstract: An electromagnetic locking element for locking a joint orthosis or joint prosthesis such as a knee orthosis or knee prosthesis. The electromagnetic locking element includes a bistable solenoid with at least one coil and at least one permanent magnet, a pin, which can be retracted and extended with the aid of the solenoid for locking the joint, one or several electrical energy stores such as capacitors, and an electrical control system, which, with the aid of semiconductor switches, discharges the energy store or stores via the at least one coil of the solenoid in such a way that the pin is extended.