Abstract: Materials and methods for producing tactile anatomical structures are described. These are intended primarily for use for high-value, in-depth surgical training for novice or expert surgeons. They may also be used for medical education, sales demonstrations, or for research and development. Examples of embodiments refer to their use in knee and shoulder models. The tactile tissue-simulating structures include, amongst others: skin, fat, muscles, ligaments, tendons, cartilage, bursa, fat pad, and periosteum. A method for creating a musculotendinous junction is also described.

Abstract: Compositions comprise a perovskite and a non-perovskite. Perovskites comprise AxA?yA?(1?x?y)BX3, and non-perovskites may comprise A?, B and X, where A is a first cation, A? is a second cation, A? is a third cation, B is a fourth cation, X is an anion. In some instances, A, A?, and A? are each independently (NH2)2CH+, CH3NH3+, Cs+, Rb+, or (NH2)2(C?NH2)+, with the proviso that A, A?, and A? are each different. The perovskite may have a first crystal structure in which the anion is corner-sharing, the non-perovskite may have a second crystal structure comprising at least one of an orthorhombic structure, a hexagonal structure, or a perovskite-like structure, and 1?x?y may be greater than about 0.15.

Abstract: A feeding device especially for facilitating the transition from non-oral tube feeding to oral feeding is disclosed. The device comprises a fluid reservoir-having a fluid outlet, a nipple having a fluid outlet, a conduit for conveying fluid from the reservoir to the nipple fluid outlet and a manually adjustable valve that includes a manually settable selector to control the flow of fluid through the conduit and to vary it from zero flow to substantial flow. The device may include a shield associated with the nipple.

Abstract: A method and apparatus for preventing nozzle clogging in systems for dispensing fluids that comprise a suspension or solution of solid particles in a volatile solvent, such as ink jet printing systems consisting of a control valve and a nozzle, the method comprising causing the solvent to withdraw from the nozzle by increasing diffusion of the solvent from the system at a point distal from the nozzle by means of inserting, between the nozzle and the control valve, a section of tubing that is semipermeable to the solvent, and the apparatus comprising the usual dispensing system with the addition of a semi-permeable tube between the control valve and the nozzle.