Abstract: An arch model has a set of teeth and a wall which bridges the set of teeth and has a surface opposite the set of teeth. A sheet containing indicia is placed between the surface of the arch model and a transparent zone of a cover. The cover is separably attached to the arch model. The resulting arch model has the sheet containing indicia disposed between the surface of the arch model and the transparent zone of the cover so that the indicia can be read through the cover. The sheet can be replaced by separating the cover from the arch model, replacing the sheet, and then re-attaching the cover.

Abstract: An energy consumption estimator includes a body motion sensor, a first calculation unit, an acquisition unit, and a second calculation unit. The body motion sensor detects body motion by a user. Based on the body motion detected by the body motion sensor, the first calculation unit calculates the user's total energy consumption. The acquisition unit acquires the user's energy consumption derived from fats and lipids. Based on the energy consumption derived from fats and lipids and on the total energy consumption, the second calculation unit calculates the user's total energy derived from carbohydrates.

Abstract: An apparatus for underwater activities including a vessel filled fully or partially with water, which vessel includes one or more open openings for entering the vessel, wherein the lower portion of the vessel is located within a body of water, all of the one or more open opening for entering the vessel are located in that portion of the vessel which is located under the surface level of the body of water, and that walls of the vessel are transparent, or the walls include sections that are transparent, for allowing observation of the activities taking place inside the vessel from outside of the vessel.

Abstract: The portable expanding barrier, or “sutra,” for Muslim worshippers provides protection for the area immediately in front of a worshipper of the Muslim faith during prayer. The barrier comprises several embodiments, including multiple short telescoping segments, coil springs encased in a flexible sleeve, multiple segments keyed together for locking into extended position by partial rotation, hollow tubular segments connected by an elastic cord extending through the segments, and multiple rigid segments pivotally secured to one another at alternate ends of each segment. The device may be integrated with a prayer rug, and mechanisms may be provided for automatic barrier deployment. A compass may be included.

Abstract: A training apparatus for training a child how to blow his or her nose includes a tapered chute having proximal and distal ends. The tapered chute defines an internal passageway connecting the proximal and distal ends. The proximal end includes a proximal opening that is sufficiently wide to fit over a child's nose. The distal end includes a distal opening that is smaller than the proximal opening. The internal passageway includes a narrow portion, adjoining the distal opening, and sized to snugly accommodate a projectile lodged therein. When air is exhaled into the proximal opening, the exhaled air passes through the internal passageway and builds pressure behind the projectile such that the projectile is forcefully ejectable from the distal opening.

Abstract: The invention relates to a training weapon system (1) intended for a recoilless antitank rifle (2), the training weapon system (1) comprising a sub-caliber barrel (3) for firing sub-caliber practice projectiles (4) provided with base plates (5), the sub-caliber barrel (3) being arranged in a shell-like body (6) in the barrel (7) of the recoilless antitank rifle (2), the front part of the sub-caliber barrel (3) being fitted in a guide part (8) for centering the barrel (3), and a rear part of the barrel (3) being fitted in a breech (9), comprising a firing channel (10) and a nozzle screw thread (11) for fitting a nozzle screw (12), which is arranged in the rear part of the shell-like body (6).

Abstract: A cognitive stimulation system for assessing, profiling, training, and improving performance of athletes and other populations is provided. A sensory semantic language is established with an athlete for relating semantic meaning of a number of sensory signals to corresponding possible actions, the sensory semantic language being essentially new to the athlete. The athlete is instructed to perform an athletic exercise involving skills and full body movement. During the exercise sensory signals are provided to the athlete to require rapid discernment by the athlete of the semantic meaning of the sensory signal to correctly choose one possible action. Whether the athlete correctly responds to the selected sensory signal during said exercise is determined. The system simulates sports scenarios during real sports actions by stimulating different perceptive-cognitive and motor mechanisms typically experienced by athletes during real competition.

Abstract: A shaving demonstration apparatus having a rotatable support surface. A drive unit is operatively connected to the rotatable support surface. A fixture is spaced apart from the rotatable support surface. A first shaving razor has a first handle mounted to the fixture. A first blade cartridge unit is mounted to an end of the first handle. The first blade cartridge unit contacts the rotatable support surface.