We present models and computational results which indicate that the spatial and temporal regularity seen in Proteus mirabilis swarm-colony development is largely an expression of a sharp age of dedifferentiation in the cell cycle from motile swarmer cells to immotile dividing cells (also called swimmer or vegetative cells.) This contrasts strongly with reaction-diffusion models of Proteus behav...

One hundred and ten patients with persistent vegetative state, were followed up for a period of five years from 1973 to 1978. Seventy-three per cent of the patients died during the period while about 10% of them recovered partially from the vegetative state. Among the recovered patients, only three became able to communicate, but two of these are not independent for their daily activites. React...

Effective nitrogen (N) management in cotton production is essential in order to achieve proper growth and development. However, soil-incorporated N can undergo a series of chemical conversions along with numerous loss mechanisms (leaching, volatilization and denitrification) that can make N unavailable to the plant. In addition, soil-incorporated N has faced much scrutiny over the years for its...

Justification. Approximately 10,000 to 25,000 adults and 6,000 to 10,000 children in the United States are diagnosed as being in the persistent vegetative state (PVS). Inasmuch as the Task Force report reviewed the medical facts concerning PVS, the need to develop management standards and guidelines became apparent. The following summary provides practice parameters that outline diagnostic and ...

Tissue cultures of Phyllanthus tenellus Roxb. were maintained on modified MS to evaluate in vitro flowering under light of different qualities: white (control), blue, green, red, yellow, UV-A plus white and darkness; as well as different growth regulators at concentrations (μM): IBA 0.98, KIN 0.46, KIN 2.3, IBA 0.98 + KIN 0.46, IAA 1.14 + KIN 0.46. The events from vegetative to reproductive gro...

Life-extending treatment, in the form of artificial nutrition and hydration, is often provided to people in permanent vegetative states (PVS) in England and Wales for many years, even when their family believes the patient would not want it and despite the fact that no court in the UK has ever found in favour of continuing such treatment for a patient with a confirmed PVS diagnosis. The first h...

We present research in progress, aimed at explaining the tradeoffs between vegetative and reproductive structures in the architecture of Protea. The species of interest, Protea lepido-carpodendron, reproduces only after a fire that kills it. We aim at using a biomechanical developmental functionalstructural model to demonstrate that Protea lepidocarpodendron is adapted to the statistical distri...

Understanding long-term persistence and variability in species populations can help to predict future survival, growth and distribution; however, sustained observations are exceedingly rare. We examine and interpret a remarkable record of the calcareous brown alga Padina pavonica (Phaeophyceae) at its northern limit on the south coast of England (50°N, 1-3°W) from 1680 to 2014, which is probabl...

Social interactions are widely recognized as a potential influence on risk-related behaviors.We present a mediation model in which social interactions (classified as formal= informal and generic=fire-specific) are associated with beliefs about wildfire risk and mitigation options, which in turn shape wildfire mitigation behaviors. We test this model using survey data from fire-prone areas of Co...