摘要:
An aircraft landing gear comprising: an arm mounted to a pivot and carrying one or more wheel assemblies; and a composite leaf spring which is coupled to the arm and arranged to provide a resilient biasing force which opposes rotation of the arm about the pivot. The arm can be made relatively stiff in comparison with the leaf spring, so that load is transferred directly into the pivot without a large amount of bending of the leg. The leaf spring shock absorber typically has a reduced part count compared with a conventional oleo-pneumatic shock absorber. By forming the leaf spring from a composite material, its weight is significantly reduced in comparison with a conventional metal spring, making it suitable for use on a relatively large aircraft.
摘要:
A method of braked pivot turning an aircraft, the aircraft comprising a fuselage and a landing gear assembly located to one side thereof. The landing gear comprises a bogie with wheels mounted thereon, at least one wheel being located on a first side of the bogie and at least one wheel being located on a second side of the bogie. The method includes the steps of applying thrust (7″) for moving or turning the aircraft, and via the braking of at least one wheel, applying a greater braking force to the first side of the bogie than to the second side. The first side is located closer to the center of turning of the aircraft than the second side. The method thereby generates relatively low torque loads in the landing gear leg, reducing fatigue damage. A brake control system is also provided for selectively braking wheels during a turn.
摘要:
A method of removing an adhesive resin from a dental tooth which method comprises contacting the dental tooth with a bioactive glass using an air abrasion system.
摘要:
An injection device including a housing, a needle guard sleeve displaceable relative to the housing, and a spring coupled to the guard sleeve such that the guard sleeve can be moved by the spring distally from a proximal position to an end position, the spring also being coupled to a forward drive element displaceable relative to the housing in a drive direction wherein the spring is tensioned upon a movement of the forward drive element in the forward drive direction.
摘要:
An injection device for use with a two-chamber ampoule, wherein the device includes a front casing part with which the two-chamber ampoule can be associated, a rear casing part, a threaded drive accommodated by the rear casing part, a piston rod which, during a blending movement, is moved by the threaded drive toward a dispensing end of the device and slaves at least a closing piston of the two-chamber ampoule in the process, wherein a spring element presses the piston rod toward the dispensing end during a delivery movement.
摘要:
A combination of a storage container for an injectable product and a needleless injection device for injecting the product, wherein an adapter is used to establish a fluid connection between the storage container and the injection device, wherein the storage container is connected to a dosing means for dispensing the injectable product to the injection device in doses, and the dosing means includes an actuator arranged in the storage container or reaching into the storage container.
摘要:
Der-f and/or Der-p dust mite allergens are deactivated by a liquid composition comprising one or more of the following deactivants: i) cedarwood oil, ii) hexadecyltrimethylammonium chloride, iii) aluminium chlorohydrate, iv) 1-propoxy-propanol-2, v) polyquaternium-10 vi) silica gel, vii) propylene glycol alginate, viii) ammonium sulphate, ix) hinokitiol, x) L-ascorbic acid, xi) immobilised tannic acid, xii) chlorohexidine, xiii) maleic anhydride, xiv) hinoki oil, xv) a composite of AgCl and TiO2, xvi) diazolidinyl urea, xviii) a compound of formula I xix) the compound of formula II xx) a polymeric dialdehyde containing two or more of a recurring unit of the formula III where n=2 to 200, xxi) urea, xxii) cyclodextrin, xxiii) hydrogenated hop oil, xxiv) polyvinylpyrrolidone, xxv) N-methylpyrrolidone, xxvi) the sodium salt of anthraquinone, xxvii) potassium thioglycolate, and xxviii) glutaraldehyde. Deactivants (i) to (xx) are effective against allergens derived from both species. Deactivants (xxi) to (xxvi) are effective against only Der-f allergens. Deactivants (xxvii) and (xxviii) are effective against only Der-p allergens.
摘要:
The present invention provides a composite material comprising lactoferrin and a bioactive glass. The invention also relates to pharmaceutical compositions containing the composite material. Further aspects of the invention relate to the use of the composite material of the for treating a wound, treating or preventing bacterial or viral infections in a wound, preventing viral transmission, regenerating bone, treating osteoporosis, preventing or alleviating bleeding in a wound, sterilising a wound and/or controlling haemorrhaging.
摘要:
A tissue-adhesive formulation consists of a naturally occurring or synthetic polymerisable and/or cross-linkable material in particulate form, the polymerisable and/or cross-linkable material being in admixture with particulate material comprising tissue-reactive functional groups. The formulation may be used in the preparation of a tissue-adhesive sheet, by applying the formulation to at least one side of a core of a naturally occurring or synthetic polymeric material.