Abstract: This disclosure relates to a semiconductor structure, a semiconductor device, and a method for forming a semiconductor structure. The semiconductor structure comprises a crystalline III-V semiconductor substrate, the semiconductor substrate comprising a group 13 post-transition metal element and arsenide, and crystalline particles chemically bonded to the semiconductor substrate, the particles comprising the group 13 post-transition metal element and oxygen.

Abstract: A bottom grate for a crusher for chipping or comminuting material which includes: support ribs each substantially perpendicular to the rotational axis of the crusher; grate blades mounted to the support ribs and substantially parallel to the rotational axis, wherein the grate blades are releasably mounted to the support ribs and the grate blades each have a cutting edge proximate to a cutting or crushing rotor in the crusher; pulling members extending between two of the support members, wherein the pulling members are in tension and the tension in the pulling members binds the blades in the support members.

Abstract: A rotary feeder for transferring loose material, said rotary feeder having a housing, where a rotor transfers material from the feed channel of the housing into the discharge channel of the housing, the rotor having blades for transferring the material, and a counter blade is fixed in the housing of the rotary feeder between the blades of the rotor for cutting oversized pieces of material. A filler is arranged in the feed channel of the rotary feeder, to prevent the formation of a protrusion in the feed channel that would disturb the flow of the material formed by the counter blade, the edge of the filler adjacent to the counter blade being arranged to yield, and the filler is arranged to return to its initial position after the cutting operation.

Abstract: A rotary feeder for transferring loose material, said rotary feeder having a housing, where a rotor transfers material from the feed channel of the housing into the discharge channel of the housing, the rotor having blades for transferring the material, and a counter blade is fixed in the housing of the rotary feeder between the blades of the rotor for cutting oversized pieces of material. A filler is arranged in the feed channel of the rotary feeder, to prevent the formation of a protrusion in the feed channel that would disturb the flow of the material formed by the counter blade, the edge of the filler adjacent to the counter blade being arranged to yield, and the filler is arranged to return to its initial position after the cutting operation.

Abstract: A bottom grate for a crusher for chipping or comminuting material which includes: support ribs each substantially perpendicular to the rotational axis of the crusher; grate blades mounted to the support ribs and substantially parallel to the rotational axis, wherein the grate blades are releasably mounted to the support ribs and the grate blades each have a cutting edge proximate to a cutting or crushing rotor in the crusher; pulling members extending between two of the support members, wherein the pulling members are in tension and the tension in the pulling members binds the blades in the support members.

Abstract: The invention relates to an apparatus for stacking rolling material, such as wood chips, bark or grain into a pile (10) and reclaiming from the pile (10) to a conveyor (20) located below the storing point, said apparatus comprising a center column (30) that supports a stacker boom (40) and a reclaimer boom (50) that are hinged to be turnable independently of each other in relation to the vertical axis of the center boom (30). A characteristic feature of the apparatus is that at least at one point that is hinged in relation to the center column (30) the supporting is arranged resting on a support wheel (60, 60?, 60?) arranged around the frame of the center column (30).

Abstract: The invention relates to an apparatus for stacking rolling material, such as e.g. wood chips, bark or grain into a pile (10) and reclaiming from the pile (10) to a material-discharging conveyor (20) located below the storing point, which apparatus comprises a center column (30) that supports a stacker boom (40) and a reclaimer boom (50), an equalizing hopper (60), at least one conveyor (25) located in the equalizing hopper (60) for transmitting the material being discharged to the discharging conveyor (20). A characteristic feature of the apparatus is that the center column (30) is supported directly through the equalizing hopper (60) onto the bottom of the equalizing hopper's (60) foundation.

Abstract: A debarking mechanism including of rotatable debarking shafts extending parallel to an advancing direction (A) of the logs to be fed therethrough, which are provided with teeth extending beyond the circumferential surface of the shaft. At least the uppermost debarking shaft is moved sideways towards the inner part of the debarking mechanism in such a way that each debarking shaft directs an impact effect on logs colliding with it and moved by the debarking shafts located in a lower position. The circumferential speed of the debarking shaft is selected to be the greater the higher the debarking shaft is positioned. A free passage is arranged for the bark passing over the debarking shaft.

Abstract: A debarking mechanism including of rotatable debarking shafts extending parallel to an advancing direction (A) of the logs to be fed therethrough, which are provided with teeth extending beyond the circumferential surface of the shaft. At least the uppermost debarking shaft is moved sideways towards the inner part of the debarking mechanism in such a way that each debarking shaft directs an impact effect on logs colliding with it and moved by the debarking shafts located in a lower position. The circumferential speed of the debarking shaft is selected to be the greater the higher the debarking shaft is positioned. A free passage is arranged for the bark passing over the debarking shaft.

Abstract: The present invention relates to a method of processing logs by means of an apparatus comprising a transportation level in the advancing direction (P) of the logs, where they are arranged to be transported in a position perpendicular to their advancing direction (P), and where orifice members going therethrough and extending in the advancing direction (P) of the logs. In the method, at least two support member units spaced from each other are arranged below the transportation level whereby each support member unit comprises at least one elongated support member, which is arranged rotatably parallel to the transportation level and perpendicular to the advancing direction (P) and protruding therefrom, and said axis of rotation each support member unit is adapted so that when rotating, the support members protrude through the orifice members above the transportation level whereby the logs are received in one or more receiving spaces formed between the support members protruding above the transportation level.

Abstract: A fixing arrangement of a chipper blade for a chipper having a cylindrical blade disc, one end surface of which is provided with one or more blades extending essentially radially in relation to the blade disc and for support thereof a wearing segment is arranged, the chipper is provided with a wearing surface subsequent the blade for resisting the stress caused by the logs being chipped in the chipper. At least one blade segment is arranged to be supported onto the blade and the wearing segment, an upper surface of which forms a desired portion of the wearing surface, and a coating is formed on the upper surface to resist stress.

Abstract: The invention relates to a debarking mechanism (1) for the decortication or pretreatment of logs (2) for separately performed final debarking and for the discharge of at least some of the bark removed from a wood stream passing through the debarking mechanism, the said debarking mechanism comprising a number of rotatable debarking shafts (3, 3?) extending parallel to an advancing direction (A) of the logs (2) to be fed therethrough, which are provided with a number of teeth (4) extending beyond the circumferential surface of the shaft (3, 3?).

Abstract: The invention relates to an apparatus for stacking rolling material, such as e.g. wood chips, bark or grain into a pile (10) and reclaiming from the pile (10) to a material-discharging conveyor (20) located below the storing point, which apparatus comprises a center column (30) that supports a stacker boom (40) and a reclaimer boom (50), an equalizing hopper (60), at least one conveyor (25) located in the equalizing hopper (60) for transmitting the material being discharged to the discharging conveyor (20). A characteristic feature of the apparatus is that the center column (30) is supported directly through the equalizing hopper (60) onto the bottom of the equalizing hopper's (60) foundation.

Abstract: A log shuffler and conveyor assembly including: a chute including a log conveyor having a bottom surface and at least one sidewall; a gap in the log conveyor, and a log shuffler arranged in the gap of the conveyor, wherein the shuffler includes at least one pivoting plate having a first edge moving reciprocally above and below the bottom surface of the chute.

Abstract: The invention relates to an apparatus for stacking rolling material, such as wood chips, bark or grain into a pile (10) and reclaiming from the pile (10) to a conveyor (20) located below the storing point, said apparatus comprising a center column (30) that supports a stacker boom (40) and a reclaimer boom (50) that are hinged to be turnable independently of each other in relation to the vertical axis of the center boom (30). A characteristic feature of the apparatus is that at least at one point that is hinged in relation to the center column (30) the supporting is arranged resting on a support wheel (60, 60?, 60?) arranged around the frame of the center column (30).

Abstract: The invention relates to an apparatus for reclaiming rolling material, such as e.g. wood chips, bark or corn from a pile (10) to a conveyor (20) below the storing point, which apparatus comprises a reclaimer boom (50) that is supported onto a center column (30), to which reclaimer boom (50) transporting means (55) are connected for transferring material being reclaimed to a conveyor (20) below the storing point. It is characteristic for the apparatus that the reclaimer boom (50) and/or the transporting means (55) are supported by means of at least one intermediate support (80) in addition to being supported at their ends.

Abstract: The present invention relates to a method of processing logs by means of an apparatus comprising a transportation level in the advancing direction (P) of the logs, where they are arranged to be transported in a position perpendicular to their advancing direction (P), and where orifice members going therethrough and extending in the advancing direction (P) of the logs. In the method, at least two support member units spaced from each other are arranged below the transportation level whereby each support member unit comprises at least one elongated support member, which is arranged rotatably parallel to the transportation level and perpendicular to the advancing direction (P) and protruding therefrom, and said axis of rotation of each support member unit is adapted so that when rotating, the support members protrude through the orifice members above the transportation level whereby the logs are received in one or more receiving spaces formed between the support members protruding above the transportation level.

Abstract: A debarking mechanism including a number of rotatable debarking shafts extending parallel to an advancing direction (A) of the trees to be fed therethrough, which are provided with a number of teeth extending beyond the circumferential surface of the shaft and the debarking shafts being adapted to each other in such a way that the presently processed trees make a circular motion (C) in the debarking mechanism, in which motion the trees are forced upon the support surface constituted by the debarking shafts effected by the rotary motion of the debarking shafts. The uppermost debarking shaft has been fitted together with a guiding surface, the surface together with the uppermost debarking shaft forming a slot convergent in the direction of rotation of the debarking shaft.

Abstract: The invention relates to a debarking mechanism (1) for the decortication or pretreatment of logs (2) for separately performed final debarking and for the discharge of at least some of the bark removed from a wood stream passing through the debarking mechanism, the said debarking mechanism comprising a number of rotatable debarking shafts (3, 3?) extending parallel to an advancing direction (A) of the logs (2) to be fed therethrough, which are provided with a number of teeth (4) extending beyond the circumferential surface of the shaft (3, 3?). The debarking shafts (3, 3?) are arranged relative to each other in such a way that the logs (2) being processed perform a rotary motion (C) in the debarking mechanism, in which motion the logs (2) are forced in their turn, by the effect of the rotary motion (5) of the debarking shafts (3, 3?), into the upper position, from which they roll down into the lower position on top of the other logs (2) in the debarking machine (1).

Abstract: The invention relates to an apparatus for sorting wood chips, said apparatus having a feeder for supplying the wood chips onto a sloping support surface so that the chips slide along the support surface and over a slit extending across the support surface. A flow of gas through the slit providing an impulse action to the chips as the chips pass over the slit. Alongside the impulse-action generating gas flow discharging from the slit is mounted a baffle/guide plate for controlling turbulence created by the gas flow.