摘要:
The invention relates to a method for the production of an aromatic carbonyl compound by the oxidation of a methyl group or methylene group bonded to the aromatic group in which the aromatic substance is reacted in the presence of an oxidizing agent and a sulphoxide, a sulphoxide being selected for the oxidation of a specific aromatic substance whose ionization potential, in terms of magnitude, differs from the ionization potential of the aromatic substance to be oxidized by a maximum of ±0.25 eV.
摘要:
The invention relates to a method for the production of an aromatic carbonyl compound by the oxidation of a methyl group or methylene group bonded to the aromatic group in which the aromatic substance is reacted in the presence of an oxidising agent and a sulphoxide, a sulphoxide being selected for the oxidation of a specific aromatic substance whose ionisation potential, in terms of magnitude, differs from the ionisation potential of the aromatic substance to be oxidised by a maximum of ±0.25 eV.
摘要:
The invention relates to mixtures containing 5 to 99.5 wt. % of a compound of formula (I), 95 to 0.5 wt. % of a compound of formula (II) and a maximum of 10 wt. % of one of several compounds of general formula (III a), wherein A1-A32 which are independent from each other are equal or different and represent a straight-chained or branched alkyl or alkenyl having 1-12 carbon atoms, cycloalkyl having 48 carbon atoms, an aryl having 6-12 carbon atoms, an aralkyl having 7-12 carbon atoms, or A1-A2, A3-A4, A5-A6 etc. -A31-A32 which are independent from each other and are equal or different and are connected together directly or via O or N-A33 to a ring having 3-7 ring members, A33 represents an alkyl having 1-4 carbon atoms. X1 and/or X2 and/or X3 which are independent from each other represent a radical of formula (III b), or the radical X1 and/or X2 and/or X3 as well as a straight-chained or branched alkyl or alkenyl having 1-12 carbon atoms, cycloalkyl having 4-8 carbon atoms represent an aryl having 6-12 carbon atoms, an aralkyl having 7-12 carbon atoms, or respectively the radicals which are disposed on an identically bound nitrogen atom, e.g. A1 and A2, A3 and A4, A5 and A6 etc. -A31 and A32 which are independent from each other are equal or different and are connected together directly or via O or N-A33 to a ring having 3-7 ring members and A33 represents an alkyl having 1-4 carbon atoms and B− represents a single-valent organic or inorganic acid radical or the equivalent of a multi-valent acid radical. The mixtures can be used as catalysts and co-catalysts for phase transfer reactions, nucleophilic substitution reactions or halogen-fluoro-exchange reactions.
摘要:
A modular operating table comprises a support (10) and a base part (20) attached to the support (10), the base part (20) providing a first region of a support surface for a patient's body during surgery, the base part (20) comprising side bars (21) extending parallel to a longitudinal axis of the support surface in lateral edge regions of the support surface. A seat element (30) is attached to the base part (20), the seat element (30) providing a second region of the support surface, a width of the second region decreasing in a distal direction, symmetric to a central longitudinal axis of the support surface, the seat element (30) having at least two first connection elements for the distal attachment of functional components, the at least two first connection elements being arranged along main axes of the side bars. A first functional component (40.1, 40.2) comprising a generally triangular plate (42.1, 42.2) provides a third region of the support surface. The first functional component (40.1, 40.2) is attachable to one of the at least two first connection elements of the seat element, the attachment of two of said first functional components (40.1, 40.2) complementing a generally rectangular support area in a distal region of the seat element (30). The first functional component (40.1, 40.2) has a second connection element for the distal attachment of functional components, the second connection element being arranged along the main axis of the corresponding side bar when the first functional component (40.1, 40.2) is attached to the seat element (30).
摘要:
An sensor/emitter system includes a sensor/emitter payload capable of generating image signals in response to radiation falling thereon and of emitting a radiation beam includes a manually controllable input device. In a first embodiment, a hand held control unit (HCU) comprises an enclosure for housing input control actuators, and a handle extending from the enclosure. The enclosure includes a control panel surface having one or more control actuators protruding therefrom for actuation by a thumb of an operator while the operator grips the handle and a longitudinal axis of the handle makes an angle of between 180 to 135 degrees with respect to the control panel surface. In addition, the handle is contoured with an ovoid shape and over coated with a foam material to provide a more comfortable grip over extended use. In a second embodiment, a lap top control unit (LCU) is reconfigurable by an operator to swap control elements from a left side to a right side to accommodate both left and right-handed users.
摘要:
A drive system for machines and vehicles with a hydraulic and mechanical transmission arranged thereafter having a driving motor and a control member which can continuously vary the speed of the motor. A hydraulic converter also controlled by a control member dependent upon the speed of the driving motor and the running pressure of the motor is also provided, in which a transmission arranged after the converter and a shifting mechanism is connected to an electronic control circuit so that an operating element for shifting gears of the transmission may achieve a comfortable shifting behavior for the transmission. Shifting from a high gear to a low gear will occur only under the following conditions: (a) before shifting, the output speed of the hydraulic converter is below a certain predetermined value, and (b) before shifting, the transmission ratio of the converter reaches a specific minimum value caused by the working pressure of the motor.
摘要:
The invention relates to a magnetic assembly (10) of a solenoid valve, particularly for actuating a fuel injector, having a housing (12, 16) receiving a magnetic core (28) having a magnetic coil (26). Electrical contacts (32) are led through penetrations (34) out of the housing (12, 16). The electrical contacts (32) in the housing (12, 16) for supplying the magnetic coil (26) with current are attached by means of an adhesive connection (50).
摘要:
A rotatable payload support turret for operation in a potentially hazardous environment includes a fixed element attached to a vehicle or fixed structure and a rotatable element, supported for rotation with respect to the fixed element. The turret includes a camera payload having a pointing direction configured to be upwardly pointing. An annular clearance gap formed between the fixed element and the rotatable element is sealed by a conventional gas tight magnetic fluid seal element. A wiper seal is also provided in the clearance gap between the location of the magnetic fluid and the external environment to prevent breakdown of the magnetic fluid by elements of the potentially hazardous environment. The clearance gap may also form a labyrinth seal having up to three legs that are oriented to oppose a gravitational force direction. In addition, the fixed element may include a fluid repelling feature for repelling streams of incoming fluids thereby deflecting elements of the potentially hazardous environment away from an outer opening of the clearance gap.
摘要:
A gas turbine is provided including a compressor, a combustion chamber, a guide vane row and a rotor airfoil row. The guide vane row includes a plurality of guide vane airfoils having a blade and an inner platform. The ratio between the pitch and the leading edge diameter of the guide vane airfoils is between 6.3-7.6 and the ratio between the platform length and the leading edge diameter of the guide vane airfoils is between 4.0-5.5.
摘要:
A bone plate system is disclosed which includes a bone plate having at least one plate hole, at least one pin adapted to be disposed in the at least one plate hole, and a polymer component disposed between the at least one pin and the bone plate. The polymer component includes a polymer that may be melted through the application of ultrasonic energy. The at least one pin is constructed of a material that will not melt under such application of ultrasonic energy. The re-solidified polymer component creates a bond between the at least one pin and the bone plate to provide a more rigid and secure mating therebetween, and to at least substantially prevent backout of the at least one pin with respect to the bone plate. A method of implanting the bone plate system is also disclosed.