The ARISA computerized image design invented by the 701 Research Institute of the China Aero-Space Industry Corporation includes a clothing-on system and hair-complete system. By clothing-on system, garments of differ...The ARISA computerized image design invented by the 701 Research Institute of the China Aero-Space Industry Corporation includes a clothing-on system and hair-complete system. By clothing-on system, garments of different styles can be automatically shown on the television screen for customers’ choice. At one press of the keyboard, another style can be seen. Customers can even try to change color and pattern of clothing material for the garment they have chosen, so as to achieve total satisfaction. If a customer’s image is recorded by camera beforehand, the system will, according to展开更多
Jellyfish blooms have increased worldwide, and the outbreaks of jellyfish population not only affect the food web structures via voracious predation but also play an important role in the dynamics of nutrients and oxy...Jellyfish blooms have increased worldwide, and the outbreaks of jellyfish population not only affect the food web structures via voracious predation but also play an important role in the dynamics of nutrients and oxygen in planktonic food webs. However, it remains unclear whether specific carbon compounds released through jellyfish metabolic processes have the potential to shape bacterial community composition. Therefore, in this study, we aimed to investigate the compositional succession of the bacterioplankton community in response to the dissolved organic matter (DOM) released by the live Scyphomedusae Cyanea lamarckii and Chrysaora hysoscella collected from Helgoland Roads of the North Sea. The bacterial community was significantly stimulated by the DOM released form live jellyfish and different dominant phylotypes were observed for these two Scyphomedusae species. Furthermore, the bacterial community structures in the different DOM sources, jellyfish-incubated media, Kabeltonne seawater, and artificial seawater (DOM-free) were significantly different, as revealed by automated ribosomal intergenic spacer analysis fingerprints. Catalyzed reporter deposition fluorescence in situ hybridization (CARD-FISH) revealed a rapid species-specific shift in bacterial community composition. Gammaproteobacteria dominated the community instead of the Bacteroidetes community for C. lamarckii, whereas Gammaproteobacteria and Bacteroidetes dominated the community for C. hysoscella. The significant differences in the bacterial community composition and succession indicate that the components of the DOM released by jellyfish might differ with jellyfish species.展开更多
Potable water is a resource out of reach for millions worldwide,and the available water may be chemically and microbiologically compromised. This is particularly acute in Africa,where water-networks may be non-existen...Potable water is a resource out of reach for millions worldwide,and the available water may be chemically and microbiologically compromised. This is particularly acute in Africa,where water-networks may be non-existent or restricted to a small fraction of the urban population,as in the case of Guinea-Bissau,West Africa. This study was carried out seasonally in Bolama（11°N）,where unprotected hand-dug wells with acidic water are the sole source of water for the population. We inspected the free-living bacterial community dynamics by automated rRNA intergenic spacer analyses,quantitative polymerase chain reaction and cloning approaches.The results revealed a clear seasonal shift in bacterial assemblage composition and microbial abundance within the same sampling site. Temperature,pH and turbidity,together with the infiltration and percolation of surface water,which takes place in the wet season,seemed to be the driving factors in the shaping and selection of the bacterial community and deterioration of water quality. Analysis of 16 S rDNA sequences revealed several potential pathogenic bacteria and uncultured bacteria associated with water and sediments,corroborating the importance of a culture-independent approach in drinking water monitoring.展开更多
文摘The ARISA computerized image design invented by the 701 Research Institute of the China Aero-Space Industry Corporation includes a clothing-on system and hair-complete system. By clothing-on system, garments of different styles can be automatically shown on the television screen for customers’ choice. At one press of the keyboard, another style can be seen. Customers can even try to change color and pattern of clothing material for the garment they have chosen, so as to achieve total satisfaction. If a customer’s image is recorded by camera beforehand, the system will, according to
基金Project at the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (Germany)the funding from the China Scholarship Council+1 种基金Jutta Niggemann and Thorsten Dittmar (ICBM COU Oldenburg) who supported the preparation of the DOM free seawater strongly with material and technical supportthe crew of the AADE research vessel for providing samples as well as the entire team of the AWI Food Web Project
文摘Jellyfish blooms have increased worldwide, and the outbreaks of jellyfish population not only affect the food web structures via voracious predation but also play an important role in the dynamics of nutrients and oxygen in planktonic food webs. However, it remains unclear whether specific carbon compounds released through jellyfish metabolic processes have the potential to shape bacterial community composition. Therefore, in this study, we aimed to investigate the compositional succession of the bacterioplankton community in response to the dissolved organic matter (DOM) released by the live Scyphomedusae Cyanea lamarckii and Chrysaora hysoscella collected from Helgoland Roads of the North Sea. The bacterial community was significantly stimulated by the DOM released form live jellyfish and different dominant phylotypes were observed for these two Scyphomedusae species. Furthermore, the bacterial community structures in the different DOM sources, jellyfish-incubated media, Kabeltonne seawater, and artificial seawater (DOM-free) were significantly different, as revealed by automated ribosomal intergenic spacer analysis fingerprints. Catalyzed reporter deposition fluorescence in situ hybridization (CARD-FISH) revealed a rapid species-specific shift in bacterial community composition. Gammaproteobacteria dominated the community instead of the Bacteroidetes community for C. lamarckii, whereas Gammaproteobacteria and Bacteroidetes dominated the community for C. hysoscella. The significant differences in the bacterial community composition and succession indicate that the components of the DOM released by jellyfish might differ with jellyfish species.
基金funded through a PhD fellowship to A.Machado (SFRH/BD/46146/2008) co-financed by POPH/FSEa grant to A.Bordalo (PTDC/ AAC-CLI/103539/2008)partially supported by the European Regional Development Fund (ERDF) through the COMPETE-Operational Competitiveness Programme and national funds through FCT-Foundation for Science and Technology,under the project "PEst-C/MAR/ LA0015/2013"
文摘Potable water is a resource out of reach for millions worldwide,and the available water may be chemically and microbiologically compromised. This is particularly acute in Africa,where water-networks may be non-existent or restricted to a small fraction of the urban population,as in the case of Guinea-Bissau,West Africa. This study was carried out seasonally in Bolama（11°N）,where unprotected hand-dug wells with acidic water are the sole source of water for the population. We inspected the free-living bacterial community dynamics by automated rRNA intergenic spacer analyses,quantitative polymerase chain reaction and cloning approaches.The results revealed a clear seasonal shift in bacterial assemblage composition and microbial abundance within the same sampling site. Temperature,pH and turbidity,together with the infiltration and percolation of surface water,which takes place in the wet season,seemed to be the driving factors in the shaping and selection of the bacterial community and deterioration of water quality. Analysis of 16 S rDNA sequences revealed several potential pathogenic bacteria and uncultured bacteria associated with water and sediments,corroborating the importance of a culture-independent approach in drinking water monitoring.
