Winter breeding of black swan Cygnus atratus in a solar greenhouse with a water pond.

Winter propagation of black swans Cygnus atratus is introduced at Kwangpho on the east coast of the Democratic People's Republic of Korea located in the temperate zone of northeast Asia. The natural lake Kwangpho was selected as a rearing site to provide the environment which matched most closely to black swan's natural habitats. Comparison of the climate data of Kwangpho with Australia and New Zealand led to the conclusion that it is necessary to increase winter temperature 10 °C for artificial rearing.

A robust biocatalyst based on laccase immobilized superparamagnetic FeO@SiO-NH nanoparticles and its application for degradation of chlorophenols.

The presence of chlorophenols in water and wastewater is considered a serious environmental issue. To eliminate these micropollutants, biodegradation of chlorophenols using enzyme-nanoparticle conjugated biocatalyst, is proposed as an economical and eco-friendly method. Herein, amino-functionalized superparamagnetic FeO@SiO-NH nanoparticles with core-shell structure were constructed as a promising carrier for immobilization of laccase from Trametes versicolor.

Superior elimination of Cr(VI) using polydopamine functionalized attapulgite supported nZVI composite: Behavior and mechanism.

In this study, a polydopamine (PDA) modified attapulgite (ATP) supported nano sized zero-valent iron (nZVI) composite (PDA/ATP-nZVI) was rapidly synthesized under acidic conditions, and employed to alleviate Cr(VI) toxicity from an aqueous solution. Kinetic studies revealed that Cr(VI) adsorption process followed the pseudo-second order model, suggesting chemisorption was the dominant adsorption mechanism. Liu isotherm adsorption model was able to better describe the Cr(VI) adsorption isotherm with the maximum adsorption capacity of 134.

A comparative study on influences of static electric field and power frequency electric field on cognition in mice.

Recently, electromagnetic fields around ultra-high voltage transmission lines have received considerable attentions for their potential biological effects. This study aimed to investigate the effects of static electric field (SEF) and power frequency electric field (PFEF) on cognition. Mice were exposed to SEF and PFEF with the same strength (35 kV/m) for 49 days, respectively.

The impact of PHB accumulation on L-glutamate production by recombinant Corynebacterium glutamicum.

Corynebacterium glutamicum, a gram-positive soil bacterium, has been used extensively for the industrial production of l-glutamate and other amino acids. In this study, an Escherichia coli-C. glutamicum shuttle expression plasmid harboring polyhydroxybutyrate (PHB) synthesis genes, phbCAB from Ralstonia eutropha, was constructed under the Ptrc promoter.