Suchergebnisse

Using emulsification technique, magnetic microspheres (MMS) were prepared from solutions of alginate, pectin, gelatin, chitosan and polyvinyl alcohol. Index of polidispersity of the microspheres was ≤ 0.1. The microspheres from gelatin, chitosan and polyvinyl alcohol covalently crosslinked with glutaraldehyde were resistant to sonication and hydrolysis at room temperature in buffer solution with pH   7.4. The microspheres containing superparamagnetic magnetite particles demonstrated no residual magnetization. After modification, chitosan and polyvinyl alcohol MMS were used for immunomagnetic separation of cells and germs.

This detailed study offers a succinct yet comprehensive introduction to China's crucial policy to coordinate urban and rural development. It describes the theoretical, political, and economic reasons why China allowed a large gap between urban and rural incomes, public services, and quality of life to emerge, and the recent national and local government efforts to narrow this inequality. The authors draw primarily on extensive field research and experience in Chengdu, China's leading pilot region for the policy. They describe and explain Chengdu's governmental, administrative, economic, politi

6 pags., 5 figs. ; Within the coupled Fokas-Lenells equations framework, we show explicitly that, in contrast to the expected threefold-amplitude magnification, Peregrine solitons can reach a peak amplitude as high as 5 times the background level. Besides, the interaction of two such anomalous Peregrine solitons can generate a spikelike rogue wave of extremely high peak amplitude, depending on the parameters used. We numerically confirm that the Peregrine soliton beyond the threefold limit can be reproduced from either a deterministic initial profile or a chaotic background field, hence anticipating the feasibility of its experimental observation. ; This work was supported by the National Natural Science Foundation of China (Grant No. 11474051) and by the European Union under the European Unions Horizon 2020 research and innovation program MSCA-RISE-2015 (Grant No. 691051). Ph. G. was supported by the Indo-French Centre for the Promotion of Advanced Research (IFCPAR/ CEFIPRA) under Contract No. 5104-2. The work of J. M. S.-C. was supported by MINECO under Contract No. TEC2015-71127-C2-1-R and by the Comunidad Autonoma de Madrid (CAM) under Contract No. S2013/ MIT-2790 ; Peer Reviewed

The sale of wild animals, including protected species, may relate to regional differences in socio-politics, culture, and economic development. A better understanding of how these factors affect the illegal wildlife trade is therefore necessary to optimize the deployment of conservation resources and policing. To evaluate these factors in relation to the trade in protected animals as pets, we surveyed China's popular consumer-to-consumer website, Taobao.com (analogous to Ebay), and found that over 70,000 individual live parrots and turtles (totaling 46 and 49 protected species, respectively) were sold in just 150 days. Using analyses that attempted to account for species richness estimation and autocorrelation effects, we identified that regional economics promoted the occurrence and extent of pet sales. The provenance of these traded animals was ambiguous, but their vast numbers raise two concerns: if any proportion was sourced illegally from the wild, it is of conservation concern; whereas any bred illegally in captivity raise animal welfare concerns, because this would be unregulated. In the context of rapid economic development in China, it is thus important to reform the legislation that currently allows these commonly traded pet species to slip through the net intended to police animal welfare and illegal animal trading.