In the present work, sol-gel synthesis method was employed as strategy to obtain a magnetic and mesoporous silica-niobia material. The planned based on heterocondensation of niobium silicon alkoxide precursors, in presence spherical magnetite particles. resulting material presented interesting characteristics such magnetism, large mesopores, range from 20 50 nm, 68 m2 g−1 surface area. These fe...

The aim of the study was to determine interaction herbicides and with biostimulants on accumulation dry matter starch in potato tubers. In a three-year field experiment based method randomised sub-blocks, two factors were taken into account. first factor cultivars: Bartek, Gawin, Honorata. second five methods application: (1) control object without chemical protection (CO); (2) herbicide linuro...

Along with the increasing requirement for efficient organic conversions using green chemistry, there is a need to develop highly and eco-friendly catalytic reaction systems. Gold nanoparticles (AuNPs)-based nanocatalysts are promising candidates reduction of environmental pollutants, such as nitroaromatics dyes. This study reports on synthesis AuNPs Carpobrotus edulis (C. edulis) fruit aqueous ...

The green biosynthesis of metal nanoparticles (MNPs) has been proved to have many advantages over other methods due its simplicity, large-scale production, ecofriendly approach, and high catalytic efficiency. This work describes a single-step technique for synthesis colloidal silver (AgNPs) gold (AuNPs) using the extract from Caulis Spatholobi stems. Ultraviolet-visible spectroscopy measurement...

A bioassay of 4-amino-2-nitrophenol for possible carcinogenicity was conducted by administering the test chemical in feed to Fischer 344 rats and B6C3F1 mice. Groups of 50 rats and 50 mice of each sex were administered 4-amino-2-nitrophenol at one of two doses, either 1,250 or 2,500 ppm, for 103 weeks. Matched controls consisted of groups of 20 untreated rats and 20 untreated mice of each sex. ...

The present paper describes the functional characterization of two human aryl sulphotransferase (HAST) cDNAs, HAST1 and HAST3, previously isolated by us from liver and brain, respectively [Zhu, Veronese, Sansom, and McManus (1993) Biochem. Biophys. Res. Commun. 192, 671-676; Zhu, Veronese, Bernard, Sansom and McManus (1993) Biochem. Biophys. Res. Commun. 195, 120-127]. These appear to encode th...

Pomegranate-seed residue (PSR) was used in a new strategy for the simultaneous production of Yarrowia lipolytica lipase by submerged fermentation and its immobilization adsorption. This biocatalyst—the fermented solid containing adsorbed (fermPSR)—was evaluated hydrolysis reactions structured lipid synthesis. In shake flasks, yeast extract urea were best nitrogen sources with PSR their use incr...

Abstract This study reports the systematic development of cyclodextrin magnetic biocomposite for remediation 4-nitrophenol from wastewater. Magnetic was synthesized by co-precipitation Fe 2+ and 3+ in presence NaOH treated pine-cone followed cross-linking with using epichlorohydrin, achieved an optimization tool. The experiments were designed interaction between working condition variables (CM-...