Growth speed

To get a driving force the cell is pushed towards the cold block, which cools the interface below T, . The solid then starts to grow into the liquid and the growth speed can be measured against a calibrated scale in the microscope eyepiece. When the interface is cooled to 35°C the speed is about 0.6 mm mimk At 30°C the speed is 2.3 mm mimk And the maximum growth speed, of 3.7 mm mim, is obtained at an interface temperature of 24°C (see Fig. 6.3). At still lower temperatures the speed decreases. Indeed, if the interface is cooled to -30°C, there is hardly any growth at all. 

The large majority of skeletal remains from prehistoric Sardinia come from collective burials where skeletal elements were not articulated nor associated in any way deemed significant by the excavators. It was therefore necessary to select one skeletal element in order to insure that the same individuals were not being sampled more than once. Crania were found to be the best choice, since they hold the highest potential to identify the individual s sex, age and pathologies. While we know of different turnover rates in different skeletal elements and within the same element, the specific times have not been documented. Growth speed is believed to affect intra-bone variability mostly in... 

It goes without saying that also the growth speeds as functions of temperature were determined in Linz for a number of the rather fast crystallising industrial polymers (see the mentioned reviews.)... 

Type Ref. Example materiaP Poling field [V pm" ] Required poling field intensity [mW cm" ] Index contrast, An (DFWM or 2BC)" Grating growth speed [s] Optical quality Device lifetime [months]... 

Reservoir - water holding container used in hydroponic growing Root growth - speed at which roots mature... 

We showed that in a mutually catalyzing replication system, the selected state is one in which the number of inactive molecules of the slower replicating species, Y, is drastically suppressed. In this section, we first show that the fluctuations of the number of active Y molecules is smaller than those of active X molecules in this state. Next, we show that the molecular species Y (the minority species) becomes dominant in determining the growth speed of the protocell system. Then, considering a model with several active molecule types, the control of chemical composition through specificity symmetry breaking is discussed. 

Besides the correlation between the growth speed and similarity, the correlation with the diversity of the molecules also exists. Protocells with higher growth speed and similarity in phase 2 have higher chemical diversity also. In phase 1, one (or a very few) molecular species is dominant in the population, while about 10 species have higher population in phase 2 with higher growth speed. 

Fig. 2.3. History of power consumption and growth speed with and without molybdenum cone the simulated data in power consumptions are included (diamond symbols) for comparison...

In this case, ribbon growth speed can be expressed as... 

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