Abstract: A fuel cell device and a method for operating a fuel cell device is provided. In order to be able to efficiently heat a fuel cell device during a cold start, a fuel cell stack (1) of the fuel cell device includes a thermally insulated container (5) for temperature control fluid, and the temperature control fluid is conducted from the thermally insulated container (5) into at least one fuel cell (2) of the fuel cell stack (1) when the fuel cell device is started.

Abstract: A multi-functional infant, baby and toddler seating system characterized by two complementary components that can be used separately, yet simultaneously, for distinctly different infant, baby and toddler seating purposes, or the individual, but complementary components can be used uniquely together for yet another distinctly different means of seating babies and toddlers during meal time or other seating needs.

Abstract: A containment system to safely store a waste scoop includes: an outer receptacle including a bottom surface, at least one side wall, an opening and a first coupling element; an inner receptacle including a bottom surface and at least one side wall housed within the outer receptacle and including an opening, wherein the inner receptacle is removable from the outer receptacle via the opening of the outer receptacle; a scoop assembly including a scoop, a handle, and a lid, wherein the scoop is housed within the inner receptacle and is removable from the inner receptacle via the opening of the inner receptacle; a compartment including a second coupling element for connecting the compartment to the outer receptacle via the first and second coupling elements; and a third and fourth coupling element to secure a planar surface of the lid to cover the opening of the outer receptacle.

Abstract: A containment system to safely store a waste scoop includes: an outer receptacle including a bottom surface, at least one side wall, an opening and a first coupling element; an inner receptacle including a bottom surface and at least one side wall housed within the outer receptacle and including an opening, wherein the inner receptacle is removable from the outer receptacle via the opening of the outer receptacle; a scoop assembly including a scoop, a handle, and a lid, wherein the scoop is housed within the inner receptacle and is removable from the inner receptacle via the opening of the inner receptacle; a compartment including a second coupling element for connecting the compartment to the outer receptacle via the first and second coupling elements; and a third and fourth coupling element to secure a planar surface of the lid to cover the opening of the outer receptacle.

Abstract: A containment system to safely store a waste scoop includes: an outer receptacle including a bottom surface, at least one side wall, an opening and a first coupling element; an inner receptacle including a bottom surface and at least one side wall housed within the outer receptacle and including an opening, wherein the inner receptacle is removable from the outer receptacle via the opening of the outer receptacle; a scoop assembly including a scoop, a handle, and a lid, wherein the scoop is housed within the inner receptacle and is removable from the inner receptacle via the opening of the inner receptacle; a compartment including a second coupling element for connecting the compartment to the outer receptacle via the first and second coupling elements; and a third and fourth coupling element to secure a planar surface of the lid to cover the opening of the outer receptacle.

Abstract: Inorganic polymer compositions and methods for their preparation are described herein. The compositions include the reaction product of a reactive powder, an activator, and optionally a retardant. The reactive powder includes fly ash, calcium sulfoaluminate cement, and less than 10% by weight portland cement. In some examples, the composition is substantially free from alkanolamines. In some examples, the ratio of water to reactive powder is from 0.06:1 to less than 0.2:1. Also described herein are building materials including the compositions.

Abstract: A containment system to safely store a waste scoop includes: an outer receptacle including a bottom surface, at least one side wall, an opening and a first coupling element; an inner receptacle including a bottom surface and at least one side wall housed within the outer receptacle and including an opening, wherein the inner receptacle is removable from the outer receptacle via the opening of the outer receptacle; a scoop assembly including a scoop, a handle, and a lid, wherein the scoop is housed within the inner receptacle and is removable from the inner receptacle via the opening of the inner receptacle; a compartment including a second coupling element for connecting the compartment to the outer receptacle via the first and second coupling elements; and a third and fourth coupling element to secure a planar surface of the lid to cover the opening of the outer receptacle.

Abstract: Inorganic polymer compositions and methods for their preparation are described herein. The compositions include the reaction product of a reactive powder, an activator, and optionally a retardant. The reactive powder includes fly ash and a tricalcium aluminate additive. In some examples, the reactive powder comprises less than 5% by weight portland cement. The tricalcium aluminate is present in an amount of 0.5% or greater by weight of the reactive powder. Also described herein are building materials including the compositions.

Abstract: Inorganic polymer compositions and methods for their preparation are described herein. The compositions include the reaction product of a reactive powder, an activator, and optionally a retardant. The reactive powder includes fly ash, calcium sulfoaluminate cement, and less than 10% by weight portland cement. In some examples, the composition is substantially free from alkanolamines. In some examples, the ratio of water to reactive powder is from 0.06:1 to less than 0.2:1. Also described herein are building materials including the compositions.

Abstract: Inorganic polymer compositions and methods for their preparation are described herein. The compositions include the reaction product of a reactive powder, an activator, optionally a retardant, and water. The reactive powder includes 85% by weight or greater fly ash. The ratio of water to reactive powder is from 0.06:1 to less than 0.15:1. Also described herein are building materials including the compositions.

Abstract: Retardant-free inorganic polymer compositions and methods for their preparation are described herein. The methods include mixing reactants comprising a reactive powder and an activator in the presence of water and forming an inorganic polymer product. In some examples, the method includes continuously feeding the resultant mixture to produce the inorganic polymer product. Also described herein are mixtures and inorganic polymer compositions. Further described are building materials formed according to the methods.

Abstract: Inorganic polymer compositions and methods for their preparation are described herein. The compositions include the reaction product of a reactive powder, anhydrous calcium sulfate, an activator, and optionally a retardant. The reactive powder includes fly ash and no more than 10% by weight portland cement. The anhydrous calcium sulfate is present in an amount of 2% or greater by weight of the reactive powder. Also described herein are building materials including the compositions.

Abstract: Inorganic polymer compositions and methods for their preparation are described herein. The compositions include the reaction product of a reactive powder, an activator, and optionally a retardant. The reactive powder includes fly ash and calcium aluminate cement in an amount of 5% by weight or greater of the reactive powder. The reactive powder can include less than 8% by weight of portland cement. Also described herein are building materials including the compositions.

Abstract: Methods of producing inorganic polymer products are described herein. The methods include mixing reactants comprising a reactive powder, an activator, and optionally a retardant for a mixing time of 15 seconds or less to provide a reaction mixture and forming the reaction mixture into a product. Also described herein are building materials formed according to the methods.

Abstract: A fuel cell using a secondary alcohol such as 2-propanol as fuel is disclosed. The fuel is oxidized directly at the anode without any reforming. Such a direct secondary alcohol fuel cell (D2AFC) possesses a much higher performance than a direct methanol fuel cell, especially at current densities less than 200 mA/cm2. In addition, fuel loss due to crossover in a direct 2-propanol fuel cell (D2PFC) is less than one-sixth of that in a direct methanol fuel cell (DMFC).