Abstract: A method for the synthesis of alkyl ?-carboxy(hydroxyethyl) polysaccharides is described. The method includes methylating or ethylating a polysaccharide or providing a methylated or ethylated polysaccharide, hydroxyethylating the methylated or ethylated polysaccharide, and oxidizing the hydroxyethylated polysaccharide to form the ?-carboxy(hydroxyethyl) polysaccharide. A method for the synthesis of oxidized polysaccharides is also described. The method includes hydroxypropylating a polysaccharide and oxidizing the hydroxypropylated polysaccharides. A method for the production of a solid capable of forming a hydrogel is also described. The method includes combining a first solution comprising an oxidized oligo(hydroxypropyl) polysaccharide bearing one or more ketone groups with a second solution comprising an amine substituted polysaccharide to form a third solution, and removing solvent from the third solution to form the solid, or adding an additional solvent to the third solution to precipitate the solid.

Abstract: Systems and methods for enhancing safety of a vehicle for which a rider wears a helmet are provided. An example system include a passive tag reader and a controller in communication with the passive tag reader. The controller includes a processor and memory storing instructions that, when executed by the processor, cause the controller to perform a set of operations. The set of operations include: receiving an indication from the passive tag reader corresponding to a passive tag; evaluating the passive tag; and configuring a vehicle-limiting mode based on the evaluation.

Abstract: A method to project content from a moving projector. The method includes analyzing an object to identify a projection surface; determining a first position of a projector relative to the projection surface; modifying a first frame of a content for projection onto the projection surface based on the projection surface and the first position of the projector; projecting the first frame of the content from the projector onto the projection surface; determining a second position of the projector relative to the projection surface; modifying a second frame of the content based on the projection surface and the second position; and projecting the second frame of the content from the projector onto the projection surface.

Abstract: A conditioning shampoo composition comprised of a mixture of anionic and amphoteric surfactants and optional conditioners which imparts cleansing, wet detangling, dry detangling and manageability to hair and which is relatively non-irritating and thus suitable for use by young children and adults having sensitive skin and eyes.

Abstract: A conditioning shampoo composition comprised of a mixture of anionic and amphoteric surfactants and optional conditioners which imparts cleansing, wet detangling, dry detangling and manageability to hair and which is relatively non-irritating and thus suitable for use by young children and adults having sensitive skin and eyes.

Abstract: A conditioning shampoo composition comprised of a mixture of anionic and amphoteric surfactants and optional conditioners which imparts cleansing, wet detangling, dry detangling and manageability to hair and which is relatively non-irritating and thus suitable for use by young children and adults having sensitive skin and eyes.

Abstract: A method of fabricating a free-standing wire mesh grid pattern having a sth, flat surface is disclosed. A thermal oxide is selectively applied to front and back sides of a silicon substrate. A central portion of the oxide on the back side is removed. A resist layer is applied onto the oxide on the front side of the substrate. A resist mesh pattern with a border encompassing that resist mesh pattern is lithographically developed on the resist layer. Chrome and gold layers are sequentially deposited onto the border and into the resist mesh pattern to create a wire mesh pattern within the resist mesh pattern. The resist layer, including the developed resist mesh pattern, is removed to expose the wire mesh pattern from the front side of the substrate. A nickel layer is deposited over the gold layer to develop a wider wire mesh pattern. A second gold layer is then deposited over the nickel layer to form a wire mesh grid pattern composed of chrome, gold, nickel and gold layers.

Abstract: The tendency of gel toothpastes comprising silica thickeners, such as silica aerogel or precipitated silica, and a fluoride source, such as sodium monofluorophosphate or fluoride, to corrode aluminium tubes can be reduced by incorporating at least 0.01% by weight sodium or potassium hydroxide or carbonate, so that the pH of the toothpaste is at least 8.5.