Naturalized flow

Gas lift systems aim at lightening the liquid column by injecting gas into it, essentially stimulating natural flow. A gas lift string contains a number of valves located along the string. These valves are only required to kick-off the lifting process under normal... 

One common combination is a jet and an exhaust hood. The jet can be circular or plane and situated around or in front of a (hot) contaminant source. The intention is to direct the contaminant into a basic opening or a receptor hood. Mostly these jets are directed upward into hoods, but may be directed sideways or downward. There is a difference to jets covering openings. When directed into a hood the jet is intended to help the natural flow into the hood and not to act as a shield, even though it sometimes also has this function. Figure 10.105 illustrates two principal ways that air jets could be used to direct contaminants into a hood (see also Section 10.4.5). 

Waterway Designs that do not narrow, block or accelerate natural flows, causing erosion or silting of channels. 

Groundwater table gradient (natural flow direction). 

Micro-hydro systems use the natural flow of water to yield up to 100 kW output of electrical energy [22]. Simplicity, efficiency, longevity, reliability, and low maintenance costs make these systems attractive for mral development [23]. Like solar and wind, the fuel source for microhydro power is free, and the use of hydro-powered turbines to generate electricity produces no on-site air pollution. 

Hansson I, Morch KA, Preece CM (1977) A comparison of ultrasonically generated cavitation erosion and natural flow cavitation erosion. In Proceedings of the Ultrasonics International Conference, Brighton, UK, pp 267-274... 

Fig. 4 Changes in the monthly pattern of two selected catchments in the Ebro basin (a) the Jalon River showing moderate impact after dam operation, and (b) the Piedra River in which natural flow distribution has completely changed after dam closure (lines indicate the running means model of the respective data sets), (c) summary of analysed rivers (see [11] for more examples)...

PoffNL, Allan JD, Bain MB, Karr JR, Prestegaard KL, Richter BD, Sparks RE, Stromberg JC (1997) The natural flow regime a paradigm for river conservation and restoration. Bioscience 47(ll) 769-784... 

The Ebro headwater tributaries still have a natural flow regime [16], whereas the fluvial regimes of the main tributaries reaching the Ebro mainstream in the central and lower part of the catchment (Segre, Cinca, Gallego and Aragon rivers) are slightly to moderately altered. 

There are 318 river gauging stations within the Ebro basin [80]. Around 60 of these monitor natural flow regimes and are typically located around the edges of the basin in the medium to higher reaches of the tributary rivers [8], Others are located on rivers whose streamflow has been altered by reservoirs (see [9] for a review of historical water policy in Spain). In total, 187 reservoirs impound 57% of the mean annual runoff [10]. As an example, annual discharge measured... 

Hydropower for electricity can use either a dam or the natural flow of water in a run of the river system. Large hydropower (larger than 10 MW) and small hydropower (smaller than 10 MW) are differentiated. 

To assist in concentrating the flow, the hood may have a flange, or broad flat rim, around the expansion of the hood bell, or it may have baffles or curtains to reduce unwanted air currents. While often placed at the back of the work area, drawing contaminants away from the worker, it may also be placed over the work area where the natural flow of air is upwards as in hot conditions. 

Absolute, True, and Mathematical Time, of itself, and from its own nature flows equably without regard to an3dhing external. 

Flow regulation mainly concerns residual flow and hydropeaking. Residual flow reaches are affected by the lack of natural flow patterns and by decreased water... 

Abstract Hydropower use and settlement development adversely affected Alpine rivers and streams. The majority of Swiss and Austrian electricity is produced by hydropower plants, which impact the natural flow regime of running waters. In addition, channelization impairs the river morphology. 

Some mental disorders also appear to result from disruption of the natural flow of neurotransmitters between neurons. For example, scientists now believe that the disorder known as Parkinson s disease may result from a deficiency of the neurotransmitter dopamine. Parkinson s disease is characterized by muscular rigidity, tremor while the person is at rest, difficulty in initiating movement (a condition known as hradykinesia), slowness of voluntary movement, difficulty with balance, and difficulty with walking. When the neuronal cells that produce dopamine begin to deteriorate, they release less of the neurotransmitter the normal flow of dopamine between cells is reduced and disruptions of normal nerve patterns develop, as evidenced by the symptoms described. 

There are many modes on how a chemical is transported in the environment. The most important mechanism is the natural flow of air, which is the most rapid method of dispersal and reaches all points on Earth. This is most important for gases and... 

Disruption of natural flow paths (surface and subsurface) due to mine subsidence... 

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