Durable and regenerable antibacterial fabrics were prepared by using an innovative chemical technology employing a precursor biocidal agent, dimethylol dimethylhydantoin (DMDMH), in a chemical finishing process. The method resulted in significant add-on rates of hydantoin groups on cellulose and established a durable antimicrobial functionality, once the grafted heterocyclic compounds were chlorinated by diluted chlorine bleaching. Both cotton fabrics and polyester/ cotton fabrics exposed to treatment baths containing from 2 to 10% of DMDMH acquired a powerful inactivating capacity against a wide range of food-borne and water-borne infectious disease agents. The biocidal functions are regenerable by regular laundry exposure to chlorine bleach and can withstand over 50 standard machine washes without appreciable deterioration. In addition to their powerful antimicrobial efficacy, the fabrics exhibited improved wrinkle resistance and maintained appropriate mechanical properties, making them ideal for medical and hygienic textile applications. In this article we report the results from biocidal tests and durability evaluations and provide data characterizing physical attributes of the treated fabrics.

Sunflower stalks as adsorbents for two basic dyes (Methylene Blue and Basic Red 9) and two direct dyes (Congo Red and Direct Blue 71) in aqueous solutions were studied with equilibrium isotherms and kinetic adsorptions. The maximum adsorptions of two basic dyes on sunflower stalks are very high, i.e., 205 and 317 mg/g for Methylene Blue and Basic Red 9, respectively. The two direct dyes have relatively lower adsorption on sunflower stalks. The adsorptive behaviors of sunflower stalk components are different. The pith, which is the soft and porous material in the center of stalks, has twice the adsorptive capacity of the skin. Particle sizes of sunflower stalks also affect the adsorption of dyes. The adsorption rates of two basic dyestuffs are much higher than that of the direct dyes. Within 30 min about 80% basic dyes were removed from the solutions.

Quaternary ammonium groups were chemically grafted onto sunflower stalks in order to improve their adsorption performance to anionic species in wastewater. The chemically modified sunflower stalks were evaluated as adsorbents for two basic dyes (Methylene Blue and Basic Red 9) and two direct dyes (Congo Red and Direct Blue 71) in aqueous solutions by using equilibrium isotherms and kinetic adsorption. Before the modification, sunflower stalks exhibited relatively low adsorption to the direct dyes but very high adsorption to the basic dyes. The modified sunflower stalks showed increased adsorption to the anionic dyes, but slightly reduced adsorption to the cationic dyes, due to the existence of quaternary ammonium ions on the surface of the residues. The maximum adsorption capacities of two direct dyes on the modified sunflower stalks are 191.0 and 216.0 mg g for Congo Red and Direct Blue 71 at 50°C, respectively, which were at least four times higher than that of the unmodified residues. The adsorption rates of two direct dyestuffs are much higher on the modified residues than on the unmodified ones. Within 30 min, about 80% of direct dyes were removed from the solutions by the residues.

The discussion is based on "enthusiastic reception, patient speaking, careful observation, sincere help, warm heart, loving visit" (hereinafter referred to as "six hearts") Objective: To explore the practical effect of "six hearts" nursing service process on improving nursing students' humanistic quality. Methods: Taking nursing undergraduates from a medical college in 2016 and 2017 as the research object, 82 nursing undergraduates in 2016 were set as the control group, clinical nursing teaching was carried out by traditional teaching methods, and 84 nursing undergraduates in 2017 were set as the observation group. The "six -heart" nursing service process education was added to the traditional teaching methods, and the humanistic quality scores of the two groups of nursing students were compared. Results: the scores of humanistic accomplishment in the observation group were significantly higher than those in the control group (all p & lt; 0.01). Conclusion: The "six hearts" nursing service flow runs through clinical nursing students' teaching, which is conducive to improving nursing students' clinical communication ability and humanistic quality, laying a good foundation for reserving excellent nursing professionals and ensuring nursing quality while improving the teaching level of nurses.