Abstract: A method for producing (S)-2-butanol of an optical purity ee of >90% comprises reacting a biotransformation composition comprising, as starting materials, a racemic mixture of 2-butanol (rac-2-butanol), an oxidoreductase, a redox cofactor and a cosubstrate, (R)-2-butanol being selectively oxidized to 2-butanone, and (S)-2-butanol being retained in an optical purity ee of >90%.

Abstract: The invention relates to a rotor comprising a rotor shaft, a rotation torque transmission element which is mounted thereon and at least one element of the plate-shaped rotor head whose axis of rotation extends therethrough. Said rotor is provided with two groups of different arms. The first group consists of the flexible rotor blade connection arms which remove centrifugal forces and to which a respective blade can be fixed. The second group consists of flexible connection rotor arms which are devoid of centrifugal force to which the elements of the plate-shape rotor head can be rotationally fixed by means of the rotation torque transmission element.

Abstract: A method for the production of a chiral compound of the formula (I), R1 being identical or different and being H or an organic radical, where a biotransformation composition comprising a compound of the formula (II), an oxidoreductase, a redox cofactor and a cosubstrate are reacted forming the chiral compound of the formula (I) which is subsequently isolated.

Abstract: The invention relates to a rotor comprising a rotor shaft, a rotation torque transmission element which is mounted thereon and at least one element of the plate-shaped rotor head whose axis of rotation extends therethrough. Said rotor is provided with two groups of different arms. The first group consists of the flexible rotor blade connection arms which remove centrifugal forces and to which a respective blade can be fixed. The second group consists of flexible connection rotor arms which are devoid of centrifugal force to which the elements of the plate-shape rotor head can be rotationally fixed by means of the rotation torque transmission element.

Abstract: A rotor, comprising at least one rotor blade (B1, B2, B3, B4; B5) connectable to a rotor head (2), which rotor blade possesses a blade neck (8) having a virtual flapping hinge in the form of a flexurally soft, flexurally elastic blade-neck portion, there being provided, in a blade-connector region (12, 14; 16; 30, 32) of the blade neck (8), two auxiliary flapping hinges (H1, H2), spaced apart from one another in the radial longitudinal direction of the rotor blade (B1, B2, B3, B4; B5) with reference to a rotor radius (R), between which the virtual flapping hinge is substantially disposed and between which the blade neck (8) is deformable in flexurally elastic and curved fashion in the context of a flapwise motion. A rotorcraft, in particular a helicopter, in particular a tiltrotor helicopter, having at least one such rotor.

Abstract: A hingeless rotor, in particular for a rotorcraft, comprising: a rotor head, a rotor mast having a rotor axis, a torque-transmission element nonrotatably joined to the rotor mast, at least one rotor blade, and a rotor-head-side rotor-blade connector having a centrifugal-force-discharging blade connector loop, which loop encircles the rotor axis or the rotor mast and is nonrotatably joined to the torque-transmission element.

Abstract: A rotor, in particular for a rotorcraft, encompassing: a rotor head, at least one rotor blade, and a rotor-head-end rotor-blade connector having an integral, bearingless, centrifugal-force-controlled blade angle adjustment device. A rotorcraft, in particular a helicopter, in particular a tiltrotor helicopter, encompassing at least one such rotor. A method for adjusting the blade angle of a rotor blade of a rotor, in particular of a bearingless rotor that possesses a rotor head and a rotor-head-end rotor-blade connector, encompassing the following steps: rotating the rotor blade; and automatically adjusting the blade angle by twisting the rotor-head-end rotor-blade connector, and thus the rotor blade, about its longitudinal axis by means of centrifugal forces acting on the rotor blade.

Abstract: A pyrF gene is useful as a selection marker gene for an expression system for the production of proteins in mushrooms of the genus Trametes, Coriolus or Polyporus. The pyrF gene includes a DNA sequence SEQ ID NO: 1 from position 1133 up to and including position 1877 or DNA-sequence SEQ, ID NO: 2 from position 1 up to and including position 684 or a DNA-sequence with a sequence homology greater than 60% relative to the above-mentioned regions of sequence SEQ ID NO: 1 or SEQ ID NO: 2.

Abstract: A process for producing a mutagenized Sporidiobolus ruineniae strain having a Q10 productivity of greater than 1.

Abstract: An expression system for producing a protein in a filamentous fungus, consisting of a) a host organism selected from the species Trametes and Polyporus and b) a DNS vector containing a selection marker gene. This selection marker gene code is a protein which allows the selection of positive transformants after the transformation of the host organism and which is selected from the group of: antibiotics-resistant genes coding for proteins which eliminate the growth-inhibitory effect of antibiotics against which the host organism is not resistant. Genes coding proteins which are capable of a color-causing reaction; and genes complementing a genetic defect of the host organism (auxotrophy), the expression of the selection marker gene is controlled by at least one active genetic regulation element in the host organism, and c) a DNS vector containing a gene which codes the protein to be produced.