Abstract: A propeller (1) and a respective use method are described, comprising a cylindrical casing (3), a hub (2) couplable to an engine and rotatably mounted at least partially in the cylindrical casing of the propeller, and at least one blade (4) rotatably pivoted to the cylindrical casing. The hub (2) is rotatable with respect to the cylindrical casing of the propeller, or vice versa, to adjust the fluid dynamic pitch of the at least one blade (4). The propeller further comprises at least one elastic element (8) interposed between the hub (2) and the cylindrical casing (3) and it is characterized in that the elastic element (8) is preloaded to prevent its deformation until the resistant torque opposing the propeller rotation is lower than the torque generated by the preload of the elastic element (8), wherein said at least one blade is arranged on at least one first fixed fluid dynamic pitch before the deformation of the elastic element (8) begins.

Abstract: Golf ball consisting of an inner part comprising at least an elastomeric polymer and a reinforcing agent comprising graphene nano-platelets in which at least 90% of the nano-platelets has a lateral size (x, y) from 50 to 50,000 nm and a thickness (z) from 0.34 to 45 nm, and a C/O ratio ?100:1.

Abstract: A shoe sole comprising an elastomeric composition comprising: (D) 100 phr of a mixture of rubbers comprising: i. from 40 to 70% by weight of an isoprene polymer; ii. from 20 to 50% by weight of polybutadiene; iii. from 10 to 40% by weight of an SBR having a glass transition temperature (Tg) from ?60 to ?40° C.; (E) from 50 to 100 phr of amorphous carbon black having a surface area greater than 85 m2/g measured with the ASTM D6556 method, and a dibutyl phthalate absorption index (DBPA) greater than 90 measured with the ASTM D2414 method; (F) from 1 to 30 phr of graphene nano-platelets, wherein at least 90% of said graphene nano-platelets has a side dimension (x, y) from 50 to 50000 nm and a thickness (z) of 0.34 to 50 nm, and wherein said graphene nano-platelets have a C/O ratio ?100:1.

Abstract: Elastomeric composition for producing tire components comprising, based upon parts by weight per 100 parts by weight of rubber (phr): (A) 100 phr of a blend of rubber comprising at least 20% by weight of an isoprene polymer; (B) from 0 to 30 phr of silica; (C) from 0 to 50 phr of amorphous carbon black; (D) from 1 to 40 phr of graphene, wherein the graphene consists of graphene nanoplatelets, wherein at least 90% have a lateral size (x, y) from 50 to 50000 nm and a thickness (z) from 0.34 to 50 nm, wherein the lateral size is always greater than the thickness (x, y>z), and wherein the C/O ratio is ?100:1.

Abstract: Golf ball consisting of an inner part comprising at least an elastomeric polymer and a reinforcing agent comprising graphene nano-platelets in which at least 90% of the nano-platelets has a lateral size (x, y) from 50 to 50,000 nm and a thickness (z) from 0.34 to 45 nm, and a C/O ratio ?100:1.

Abstract: A propeller (1) and a respective use method are described, comprising a cylindrical casing (3), a hub (2) couplable to an engine and rotatably mounted at least partially in the cylindrical casing of the propeller, and at least one blade (4) rotatably pivoted to the cylindrical casing. The hub (2) is rotatable with respect to the cylindrical casing of the propeller, or vice versa, to adjust the fluid dynamic pitch of the at least one blade (4). The propeller further comprises at least one elastic element (8) interposed between the hub (2) and the cylindrical casing (3) and it is characterized in that the elastic element (8) is preloaded to prevent its deformation until the resistant torque opposing the propeller rotation is lower than the torque generated by the preload of the elastic element (8), wherein said at least one blade is arranged on at least one first fixed fluid dynamic pitch before the deformation of the elastic element (8) begins.

Abstract: A propeller and related method for adjusting the fluid-dynamic pitch of the propeller blades are described. The propeller has at least one rotatable blade pivoted to a propeller cylindrical casing, a hub adapted to be coupled to an engine and mounted within the propeller casing. The hub is rotatable with respect to the propeller cylindrical casing, or vice versa, for a non-zero angular interval (?) for the adjustment of the fluid-dynamic blade pitch. Moreover, the hub has a contact surface movable between direct or indirect disengagement and engagement positions with a respective abutment which defines a limit stop of the angular interval (?). The limit stop abutment has a region of a movable element arranged in a seat of the propeller cylindrical casing for modifying the limit stop abutment position of the at least one angular interval (?).

Abstract: Elastomeric composition for producing tire components comprising, based upon parts by weight per 100 parts by weight of rubber (phr): (A) 100 phr of a blend of rubber comprising at least 20% by weight of an isoprene polymer; (B) from 0 to 30 phr of silica; (C) from 0 to 50 phr of amorphous carbon black; (D) from 1 to 40 phr of graphene, wherein the graphene consists of graphene nanoplatelets, wherein at least 90% have a lateral size (x, y) from 50 to 50000 nm and a thickness (z) from 0.34 to 50 nm, wherein the lateral size is always greater than the thickness (x, y>z), and wherein the C/O ratio is ?100:1.

Abstract: The present invention relates to methods for the treatment of treatment-resistant depression (TRD), comprising the administration of compounds of formula (I), which are blocked in C3 position and cannot metabolize in vivo into pregnenolone derivatives and which do not have significant affinity for steroid hormonal receptors and for all tested classical main receptors and receptors of neurotransmitters of the central nervous system.

Abstract: The present invention relates to methods for the treatment of treatment-resistant depression (TRD), comprising the administration of compounds of formula (I), which are blocked in C3 position and cannot metabolize in vivo into pregnenolone derivatives and which do not have significant affinity for steroid hormonal receptors and for all tested classical main receptors and receptors of neurotransmitters of the central nervous system.

Abstract: There is described an assembly having a plurality of screws, a propeller and a related method for adjusting the fluid dynamic pitch of the blades of the propeller. The propeller has at least one blade pivoted rotatably to a cylindrical propeller casing, a hub coupled to an engine and mounted coaxially inside the propeller casing, a kinematic mechanism coupled to the hub and/or to the propeller casing, and to the blade for adjusting the fluid dynamic pitch of the propeller. The hub is rotatable with respect to the cylindrical propeller casing, or vice versa, for at least one non-zero angular interval (?) of operation of the kinematic mechanism for adjusting the fluid dynamic pitch and is also integral with a contact surface movable between disengagement from and engagement with, direct or indirect, at least one relative abutment integral with the cylindrical propeller casing which defines a limit stop of the angular interval (?).

Abstract: Disclosed is a variable pitch propeller having a blade pivoted rotatably to a cylindrical propeller casing, a drive shaft, coupled to a propulsor and positioned coaxially inside the propeller casing, a kinematic mechanism coupled to the drive shaft, or to the propeller casing, and to the blade, for adjusting the rotary motion of the blade about its axis of pivoting to the propeller casing, and means for coupling in rotation the drive shaft to the propeller casing. The propeller provides a non-null angular range of relative rotation of the blade about its axis of pivoting, with respect to the propeller casing, or vice versa. The means for coupling in rotation the drive shaft to the cylindrical propeller casing include an elastic element interposed between the drive shaft and the cylindrical casing.

Abstract: A propeller and related method for adjusting the fluid-dynamic pitch of the propeller blades are described. The propeller has at least one rotatable blade pivoted to a propeller cylindrical casing, a hub adapted to be coupled to an engine and mounted within the propeller casing. The hub is rotatable with respect to the propeller cylindrical casing, or vice versa, for a non-zero angular interval (?) for the adjustment of the fluid-dynamic blade pitch. Moreover, the hub has a contact surface movable between direct or indirect disengagement and engagement positions with a respective abutment which defines a limit stop of the angular interval (?). The limit stop abutment has a region of a movable element arranged in a seat of the propeller cylindrical casing for modifying the limit stop abutment position of the angular interval (?).

Abstract: There is described an assembly having a plurality of screws, a propeller and a related method for adjusting the fluid dynamic pitch of the blades of the propeller. The propeller has at least one blade pivoted rotatably to a cylindrical propeller casing, a hub coupled to an engine and mounted coaxially inside the propeller casing, a kinematic mechanism coupled to the hub and/or to the propeller casing, and to the blade for adjusting the fluid dynamic pitch of the propeller. The hub is rotatable with respect to the cylindrical propeller casing, or vice versa, for at least one non-zero angular interval (?) of operation of the kinematic mechanism for adjusting the fluid dynamic pitch and is also integral with a contact surface movable between disengagement from and engagement with, direct or indirect, at least one relative abutment integral with the cylindrical propeller casing which defines a limit stop of the angular interval (?).

Abstract: A device for preventing and/or stopping rotation of a shaft coupled to a motor, of the type having a first fixed element with respect to this shaft, and a moving element, and means to constrain the moving element to the shaft in such a manner as to rotate integrally with this shaft and at the same time be able to move between a position of friction contact with the fixed element, to allow stopping of the shaft, and a position of disengagement from this fixed element, to allow release of the shaft is disclosed. The device advantageously provides that the means to constrain the moving element to the shaft include a link for movement of the moving element along a direction having a radial component with respect to the shaft.

Abstract: A method for the treatment of a traumatic brain lesion comprises administering to the patient an effective quantity of 3?-methoxy-pregna-5-ene-20-one (3?-methoxy-PREG).

Abstract: A method for the treatment of a traumatic brain lesion comprises administering to the patient an effective quantity of 3?-methoxy-pregna-5-ene-20-one (3?-methoxy-PREG).

Abstract: Disclosed is a variable pitch propeller having a blade pivoted rotatably to a cylindrical propeller casing, a drive shaft, coupled to a propulsor and positioned coaxially inside the propeller casing, a kinematic mechanism coupled to the drive shaft, or to the propeller casing, and to the blade, for adjusting the rotary motion of the blade about its axis of pivoting to the propeller casing, and means for coupling in rotation the drive shaft to the propeller casing. The propeller provides a non-null angular range of relative rotation of the blade about its axis of pivoting, with respect to the propeller casing, or vice versa. The means for coupling in rotation the drive shaft to the cylindrical propeller casing include an elastic element interposed between the drive shaft and the cylindrical casing.

Abstract: Variable-pitch propeller (1) of the type comprising at least one blade (6a, 6b, 6c) rotatably pivoted (20a, 20b, 20c) to a cylindrical casing of the propeller (3a, 3b, 4), a shaft coupled to an engine and coaxial to that propeller casing, a kinematic system (7, 8a, 8b, 8c, 10a, 10b, 10c, 11), coupled to the shaft, or to the propeller casing, and to above mentioned at least one blade, for regulating the rotary motion of said at least one blade around its own pivot axis to the propeller casing, as well as means (2, 14, 15) for transmitting the rotary motion of the shaft to the propeller casing, the propeller being shaped to provide at least one not null angular range for the free relative rotation of the above mentioned at least one blade (6a, 6b, 6c) around its pivot axis, relatively to the propeller casing (3a, 3b, 4). The propeller also comprises at least one elastic element (18, 18?) countering the relative rotation of said at least one blade relatively to the propeller casing (3a, 3b, 4), or vice versa.

Abstract: The invention relates to the therapeutic use of pregnenolone derivatives for treating depressive disorders and long-term neurological diseases.