Polyacrylamide Hydrogel Containing Starch and Sugarcane Bagasse Ash: Synthesis, Characterisation, and Application in Cement Pastes and Mortars.

Internal curing is a process based on the addition of materials that function as water reservoirs in cementitious media. Superabsorbent hydrogels are an alternative that can be used as an internal curing agent, as they have the ability to absorb and release water in a controlled manner. In the present work, superabsorbent hydrogels based on crosslinked polyacrylamide in the presence of starch and sugarcane bagasse ash (SCBA) were developed and applied to mortars as an internal curing agent.

Hydrogels Based on Polyacrylamide and Pectin Containing Rice Husk Ash: Preparation, Characterization and Application in Formulation of Cementitious Materials.

Superabsorbent polymers (PSAs) have been extensively studied to act as internal curing agents in cementitious materials, as they have the characteristic of absorbing and releasing water in a controlled manner, which can contribute to the hydration process of a cementitious medium during its consolidation. Thus, hydrogels consisting of polyacrylamide (PAAm), pectin (Pec) and rice husk ash (RHA) were synthesized to be applied in cementitious matrices. In addition, the PSAs were characterized by FTIR, SEM, and XRD.

Ability of brazilian Bothrops-Lachesis-Crotalus antivenom in neutralizing some biological activities of Crotalus durissus ruruima rattlesnake venom.

We evaluated the efficacy of freeze-dried Bothrops-Lachesis-Crotalus antivenom and liquid Crotalus antivenoms to neutralize Crotalus durissus ruruima (Cdr) venom (Roraima, Brazil) comparing with C. d. terrificus (Cdt) venom.

Functional mobility and lumbopelvic rhythm in women with and without stress urinary incontinence: An observational pilot study.

Objective: To examine the functional mobility and lumbopelvic rhythm of the continent and incontinent women.

Design: An observational pilot study was performed with two groups of women, who never experienced falls.

Methods: Participants were 27 women with urinary incontinence and 27 matched controls.