Removal and recovery of phosphate by modified oyster shell and its fertilizer application.

The resource utilization of oyster shell (OS) is essential for environmental and human health because its random disposal can induce the environmental pollution and disease spread. Herein, MnFeO loaded-oyster shell (OMF) was prepared by co-precipitation method for phosphate removal and recovery. The salt etching and MnFeO (MF) loading improved the adsorption performance of OS, and the maximum adsorption capacity of OMF reached 87.

Preparation of polysulfone materials on nickel foam for solid-phase microextraction of floxacin in water and biological samples.

Solid-phase microextraction with polysulfone and molecularly imprinted polymers as coating on nickel foam were used to adsorb and enrich floxacin drugs. The preparation method is simple and reproducible to obtain the materials with controlled thickness. After evaluation by scanning electron microscope and various adsorption experiments, the materials were used to adsorb analytes in water samples and biological samples.

Silica - Boronate affinity material for quick enrichment of intracellular nucleosides.

Boronic acid modified materials have been widely used to adsorb nucleosides, but their adsorption capacities require further improvement. Most cis-diol containing biomolecules are in very low abundance along with interfering components in real samples, and need to be enriched specially. In this study, we synthesize a kind of silica absorbent modified with boronic acid derivative, using amorphous silica as raw material and obtaining high adsorption capacity for adenosine.

Preparation of temperature sensitive molecularly imprinted polymer for solid-phase microextraction coatings on stainless steel fiber to measure ofloxacin.

A kind of new temperature sensitive molecularly imprinted polymer (MIP) with ofloxacin (OFL) as template was prepared for the coating of solid phase microextraction (SPME). Dopamine was self-polymerized on stainless steel fiber (SSF) as the SPME support followed by silanization. Then MIP was synthesized as SPME coating on the modified SSF in a capillary, with N-isopropyl acrylamide as temperature sensitive monomer and methacrylic acid as functional monomer.

A novel nanoassembled doxorubicin prodrug with a high drug loading for anticancer drug delivery.

We report here a novel doxorubicin (DOX) prodrug that reduces the proportion of inactive materials and minimizes drug leak. In aqueous solutions, the resulting DOX prodrug could spontaneously form stable micelles with diameters of ∼80 nm with a DOX loading content as high as ∼40 wt%. The subsequent cytotoxicity and cell internalization behavior indicated that the resulting prodrug could show a high in vitro anticancer efficacy.

[Effects of ground cover and water-retaining agent on winter wheat growth and precipitation utilization].

An investigation was made at a hilly upland in western Henan Province to understand the effects of water-retaining agent (0, 45, and 60 kg x hm(-2)), straw mulching (3000 and 6000 kg x hm(-2)), and plastic mulching (thickness < 0.005 mm) on winter wheat growth, soil moisture and nutrition conditions, and precipitation use. All the three measures promoted winter wheat growth, enhanced grain yield and precipitation use efficiency, and improved soil moisture and nutritional regimes.

[Effects of different application rates of water-retaining agent on root physiological characteristics of winter wheat at its different growth stages].

A field experiment was conducted at the Yuzhou Experimental Base of Henan Province to study the effects of different application rates (0, 30, 60, and 90 kg x hm(-2)) of water-retaining agent (WRA) on the root physiological characteristics, biomass, and grain yield of two winter wheat cultivars Zhengmai-9694 and Aikang-58, aimed to probe into the action mechanisms of WRA on the root system of winter wheat at its different growth stages. The application of WRA decreased the root membrane permeability and soluble sugar content, and increased the root vigor. After the application of WRA, the Zhengmai-9694 at its different growth stages had a greater decrement of root membrane permeability, compared with Aikang-58.