Abstract: A drill bit for chiselling rock includes an impact face at an insertion end of the drill bit, a hollow shank, where a delivery passage is defined within the hollow shank, and a drill head, where the drill head has a cutting edge, an intake opening, and an intake passage and where the intake passage connects the intake opening to the delivery passage. A first portion of the intake passage which adjoins the intake opening has a first inclination with respect to a drill bit axis, a second portion of the intake passage which adjoins the hollow shank has a second inclination with respect to the drill bit axis, and the second inclination is greater than the first inclination.

Abstract: A drill bit includes a drill bit head, a multi-strand helix made up of three or more helix ribs, and a shank end along a drill bit axis. The multi-strand helix is made up of a conveyance area, a helix gradient, and a pitch. The helix ribs extend parallel to the drill bit axis in a first area adjacent to the drill bit head and a second area adjacent to the shank end.

Abstract: The chisel includes a tip (2), a working section (6), and an impact surface (3), and a longitudinal axis (7) that extends through the tip (2), the working section (6), and the impact surface (3). The working section (6) includes multiple webs (14) that extend along the longitudinal axis (7) and that are distributed about the longitudinal axis (7) in the circumferential direction (15). For at least one of the webs (14), a dimension (27) in the circumferential direction (15) increases by at least one-third with increasing distance (26) from the longitudinal axis (7). The webs become significantly wider toward the outside and thinner toward the longitudinal axis.

Abstract: A control method for a borehole flushing module (2) for a chiseling tool (5), includes the steps: Providing fine-grain particles in a dispenser (31); ascertaining a material (M) at a location processed by the tool (5) with the aid of a material detector (37); and introducing fine-grain particles at the location of the substrate processed by the tool (5) when the material detector (37) ascertains an iron-containing material (M2).

Abstract: A semiconductor device includes a first transistor element having a first channel region and a second transistor element having a second channel region, wherein the first channel region includes a first crystalline silicon/germanium (Si/Ge) material mixture having a first germanium concentration, and wherein the second channel region includes a second crystalline Si/Ge material mixture having a second germanium concentration that is higher than the first germanium concentration.

Abstract: The present invention relates to a neutron detector that for the first time permits the construction of large detector areas of approximately 1 m2 to 2 m2, with a spatial resolution of the neutrons of under 2 mm. It is additionally possible in the case of the modular construction in a stack arrangement to attain detection sensitivities that are comparable to 3He counter tubes (ca. 60%) or, with a greater number of detector elements, higher. By using thin substrate plates—such as aluminum sheets—and omission of the external pressure vessels, the neutron detectors are relatively lightweight despite their large dimensions and can be produced inexpensively.

Abstract: The present invention relates to a neutron detector that for the first time permits the construction of large detector areas of approximately 1 m2 to 2 m2, with a spatial resolution of the neutrons of under 2 mm. It is additionally possible in the case of the modular construction in a stack arrangement to attain detection sensitivities that are comparable to 3He counter tubes (ca. 60%) or, with a greater number of detector elements, higher. By using thin substrate plates—such as aluminum sheets—and omission of the external pressure vessels, the neutron detectors are relatively lightweight despite their large dimensions and can be produced inexpensively.

Abstract: A method for producing a drill includes cold forming of a rod-shaped blank to form a semifinished product having three or more rectilinear longitudinal ribs extending along a longitudinal axis of the semifinished product, introducing the longitudinal ribs into a first die and a second die in a working direction, where the first die bears against the longitudinal ribs in a direction of rotation about the longitudinal axis and the second die bears against the longitudinal ribs counter to the direction of rotation, pivoting the first die in the direction of rotation in relation to the second die in order to twist the longitudinal ribs between the first and second dies, pulling the longitudinal ribs 31 through the pivoted first die and the second die counter to the working direction in order to twist the longitudinal ribs and apply a drill head to the rear end in the working direction.

Abstract: The present invention relates to lipase variants and methods of obtaining them. The present invention also relates to polynucleotides encoding the variants; nucleic acid constructs, vectors, and host cells comprising the polynucleotides; and methods of using the variants.

Abstract: A control method for a bore-chiseling portable power tool for machining a substrate by a drill bit includes superimposing a periodic striking on the drill bit at an impact rate and a rotating of the tool holder at a rotational speed in a rotational direction, identifying a material of the substrate being machined by the drill bit by a sensor, adjusting the rotational speed and/or the rotational direction to a first rotational speed and a first rotational direction when the identified material is an iron-based material, and adjusting the rotational speed and/or the rotational direction to a second rotational speed and a second rotational direction when the identified material is a mineral material. The first rotational speed is less than the second rotational speed and the first rotational direction is counter-clockwise and the second rotational direction is clockwise.

Abstract: The chisel includes a tip (2), a working section (6), and an impact surface (3), and a longitudinal axis (7) that extends through the tip (2), the working section (6), and the impact surface (3). The working section (6) includes multiple webs (14) that extend along the longitudinal axis (7) and that are distributed about the longitudinal axis (7) in the circumferential direction (15). For at least one of the webs (14), a dimension (27) in the circumferential direction (15) increases by at least one-third with increasing distance (26) from the longitudinal axis (7). The webs become significantly wider toward the outside and thinner toward the longitudinal axis.

Abstract: The present invention provides a method for making a large nucleic acid having a defined sequence in vivo. The method combines recombineering techniques with a CRISPR/Cas system to permit multiple insertions of defined sequences into a target nucleic acid at one time, double stranded cleavage of target nucleic acids in which the defined sequences were not successfully inserted, and selection of successful recombinant cells. The method further includes repeating the process one or more times, using a successful recombinant from one round as the host cell for the next round.

Abstract: In semiconductor devices, some active regions may frequently have to be formed on the basis of a silicon/germanium (Si/Ge) mixture in order to appropriately adjust transistor characteristics, for instance, for P-type transistors. To this end, the present disclosure provides manufacturing techniques and respective devices in which at least two different types of active regions, including Si/Ge material, may be provided with a high degree of compatibility with conventional process strategies. Due to the provision of different germanium concentrations, increased flexibility in adjusting characteristics of transistor elements that require Si/Ge material in their active regions may be achieved.

Abstract: In various aspects, the present disclosure relates to device structures and a method of forming such a device structure. In some illustrative embodiments herein, a device is provided, including a semiconductor substrate having a first trench formed therein, and a first trench isolation structure formed in the first trench. The first trench isolation structure includes first and second insulating liners formed adjacent inner surfaces of the first trench, wherein the first insulating liner is in direct contact with inner surfaces of the first trench and the second insulating liner is formed directly on the first insulating liner, and a first insulating filling material which at least partially fills the first trench. In some aspects, a thickness of the first insulating liner is greater than a thickness of the second insulating liner.

Abstract: In semiconductor devices, some active regions may frequently have to be formed on the basis of a silicon/germanium (Si/Ge) mixture in order to appropriately adjust transistor characteristics, for instance, for P-type transistors. To this end, the present disclosure provides manufacturing techniques and respective devices in which at least two different types of active regions, including Si/Ge material, may be provided with a high degree of compatibility with conventional process strategies. Due to the provision of different germanium concentrations, increased flexibility in adjusting characteristics of transistor elements that require Si/Ge material in their active regions may be achieved.

Abstract: A semiconductor device includes a first transistor element having a first channel region and a second transistor element having a second channel region, wherein the first channel region includes a first crystalline silicon/germanium (Si/Ge) material mixture having a first germanium concentration, and wherein the second channel region includes a second crystalline Si/Ge material mixture having a second germanium concentration that is higher than the first germanium concentration.

Abstract: A method for producing a twist drill has the following steps. A blank is shaped to form a semi-finished product. The semi-finished product is formed from a core, coaxial with the drill axis, having a radius and a number of webs, arranged on the core, having a height. The semi-finished product has a constant cross section along the drill axis. The webs have a first portion which adjoins the core and in which a width of the web remains constant or decreases in the circumferential direction with increasing radial distance from the drill axis. The webs have a second portion which adjoins the first portion and in which the width of the web increases in the circumferential direction with increasing radial distance from the drill axis. The webs of the semi-finished product are shaped into helical segments using a plurality of rolling tools that annularly enclose the semi-finished product and roll on the webs along the drill axis. The rolling tools have teeth that are inclined with respect to the drill axis.

Abstract: The twist drill (1) has a drilling head (3), a continuous two-flute, three-flute to six-flute helix (4) and an insertion end (5) that are arranged consecutively on a drill axis (2). The helix (4) has a radial outer dimension (18) that varies periodically two, three to six times per revolution around the drill axis (2). The invention also relates to a production method for such a drill.

Abstract: The present invention relates to lipase variants and methods of obtaining them. The present invention also relates to polynucleotides encoding the variants; nucleic acid constructs, vectors, and host cells comprising the polynucleotides; and methods of using the variants.

Abstract: The present invention relates to lipase variants and methods of obtaining them. The present invention also relates to polynucleotides encoding the variants; nucleic acid constructs, vectors, and host cells comprising the polynucleotides; and methods of using the variants.