We present an in silico microswimmer motivated by peritrichous bacteria, E. coli, which can run and tumble spinning their flagellar motors counterclockwise (CCW) or clockwise (CW). Runs are the directed movement driven a bundle, tumbles reorientations of cells caused some motors' reversals from CCW to CW. In viscous fluid without obstacles, our simulations reveal that material properties hook c...

Application Action recognition can be profitably used in several application fields, ranging from surveillance systems and ambient assisted living, with the possibility of identifying some events of interest occurring into a video (an aggression, a robbery, a tumble of an elder person, etc), to video retrieval, by allowing a human operator to easily retrieve specific types of actions performed ...

It would be a lot easier to enjoy your life if there weren't so many things trying to kill you every day. The problems start even before you're fully awake. There's the fall out of bed that kills 600 Americans each year. There's the early-morning heart attack, which is 40% more common than those that strike later in the day. There's the fatal plunge down the stairs, the bite of sausage that get...

Monoterpenes released to air were determined during single-log barking of timber at a saw-mill and during tumble drum barking of pulpwood at a TMP mill. Characteristic proportions of fourteen compounds were assessed by adsorbent sampling and gas chromatography. For Scots pine (Pinus sylvestris), the bicylic monoterpenes alpha-pinene and 3-carene predominated. For Norway spruce (Picea abies), al...

Bacteria can change course almost instantaneously, zipping towards food or away from toxins. How do such simple organisms do something so complex? It’s all in the flagella, a tail-like structure with rotating helical filaments. The flagella work in unison to propel the cell forward by rotating counterclockwise and thus bundling together. When the flagella reverse their rotation to clockwise, th...

Noise in the transduction of chemotactic stimuli to the flagellar motor of E. coli will affect the random run-and-tumble motion of the cell and the ability to perform chemotaxis. Here we use numerical simulations to show that an intermediate level of noise in the slow methylation dynamics enhances drift while not compromising localization near concentration peaks. A minimal model shows how such...

One third of accidents occur in the home, and the age group most at risk is the under 5s. Home appliances play a part in many of these accidents. In 1986, 27 accidents in which a tumble drier was involved were reported to the home accident surveillance system. Most of these injuries resulted from falls off or against the appliance, and only one burn, to a person leaning against the door, was re...

A 29-year-old woman with an Implanon contraceptive device in situ presented with persistent and prolonged vaginal bleeding. The implant had been inserted 2 years previously; the patient had been happy with it and had been mainly amenorrhoeic with the occasional light period. She was concerned that the implant had broken during a game of 'rough and tumble' with her son in August 2000. Since the ...

The authors used meta-analytical techniques to estimate the magnitude of gender differences in mean level and variability of 35 dimensions and 3 factors of temperament in children ages 3 months to 13 years. Effortful control showed a large difference favoring girls and the dimensions within that factor (e.g., inhibitory control: d = -.41, perceptual sensitivity: d = -0.38) showed moderate gende...

Swimming bacteria display distinct motile patterns to explore their favorable environments, driven by bacterial flagella. A typical example of the flagellar motility is run-tumble swimming in Escherichia coli: CCW rotation a bundle propels cell forward. The undergoes reorientation (tumbling) upon switching from CW. It has been characterized using chemotactic mutants for studies; however, origin...