Swimming cells promote a dynamic environment within biofilms
نویسندگان
چکیده
منابع مشابه
Biofilms promote altruism.
The origin of altruism is a fundamental problem in evolution, and the maintenance of biodiversity is a fundamental problem in ecology. These two problems combine with the fundamental microbiological question of whether it is always advantageous for a unicellular organism to grow as fast as possible. The common basis for these three themes is a trade-off between growth rate and growth yield, whi...
متن کاملThe Mediation of Learning within a Dynamic Geometry Environment
Computer-based learning environments promise much in terms of enhancing mathematics learning. Yet much remains unclear about the relationship between the computer environment, the activities it might support, and the knowledge that might emerge from such activities. The analysis presented in this paper is offered as a contribution to understanding the relationship between the specific tool bein...
متن کاملElements of the Visualisation Process within a Dynamic Geometry Environment
The advent of powerful computer graphic packages has coincided with renewed interest in all forms of visual representation in mathematics. As a result, we need to be clear about what we mean by the visual processing necessary to solve mathematical problems involving visual phenomena. Visual processing involves the ability to mentally manipulate and transform visual representations and visual im...
متن کاملComing to Know about ‘dependency’ within a Dynamic Geometry Environment
The ability to define relationships between objects is one of the most powerful features of a dynamic geometry package such as Cabri-Géomètre. In this paper I document how one pair of 12 year old students begin to come to know about this form of functional dependency within this particular computer environment. I suggest that this process of coming to know about dependency may be understood as ...
متن کاملHydrodynamic dispersion within porous biofilms.
Many microorganisms live within surface-associated consortia, termed biofilms, that can form intricate porous structures interspersed with a network of fluid channels. In such systems, transport phenomena, including flow and advection, regulate various aspects of cell behavior by controlling nutrient supply, evacuation of waste products, and permeation of antimicrobial agents. This study presen...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2012
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.1210297109