Cylinders international transport

Kosmidis, K., Rinaki, E., Argyrakis, P., and Macheras, P., Analysis of Case II drug transport with radial and axial release from cylinders, International Journal of Pharmaceutics, Vol. 254, No. 2, 2003, pp. 183-188. 

If the cylinder has undergone international transport, it should be marked in accordance with rules set forth by the International Standards Organization. If the cylinder has been shipped from overseas, then it will be labeled following rules established by the Intergovernmental Maritime Consultive Organization (IMCO). 

Before cylinders are transported, reduce internal pressure to 5-25 psig. It is recommended to place a nitrogen pad of less than 25 psig on the cylinder prior to... 

In the model, the internal structure of the root is described as three concentric cylinders corresponding to the central stele, the cortex and the wall layers. Diffu-sivities and respiration rates differ in the different tissues. The model allows for the axial diffusion of O2 through the cortical gas spaces, radial diffusion into the root tissues, and simultaneous consumption in respiration and loss to the soil. A steady state is assumed, in which the flux of O2 across the root base equals the net consumption in root respiration and loss to the soil. This is realistic because root elongation is in general slow compared with gas transport. The basic equation is... 

In Figure 1.2, the hydrophobic parts of the protein molecules form the outer surface of the cylinders shown and hold the molecules in place, away from water, in the hydrocarbon part of the bilayer. The inner surfaces of the cylinders are hydrophilic and allow the transfer of ions and polar molecules from one side of the bilayer to the other. These pathways remain closed until an appropriate internal or external stimulus triggers them to open to allow transport across the membrane. 

Metal microtubules were prepared in a similar marmer, with lower internal diameters of 0.8 nm, and the authors could demonstrate that ion transport through such tubules can be switched from positive to negative ions with external potentials applied to the membrane. 2 Gold nanowires (of as little as 10 nm diameter) deposited in nanoporous filtration disks can also act as nanoelectrodes with sensitive cyclic voltammetric detection limits. Finally, the template membrane approach has also been extended to arrays of cadmium chalcogenide phases. Thus, 200 nm-diameter CdSe or graded CdSe/CdTe cylinders were electrodeposited in the pores of Anopore membranes. A Ni-CdSe array was found to be rectifying.i ... 

U. Sand, J. Sandberg, R. Bel Fdhila, Two-Phase Transport Model for the Pyrolysis Process of a Vertical Wood Cylinder, Including the Surrounding Flow Field, International Journal of Green Energy, 2006, 3 63-78. 

The majority of nitrogen oxide emissions (about 50%) comes from cars, buses, and other forms of transportation. Nitric oxide, NO, forms in small quantities in the cylinders of internal combustion engines in the reaction... 

The requirement that the uranium hexafluoride be in solid form and that the internal pressure inside the uranium hexafluoride cylinder be below atmospheric pressure when presented for transport was established as a safe method of operation and to provide the maximum possible safety margin for transport. Generally,... 

The infinitesimal control volume is a hollow cylinder of length dz and with a thickness dr, located inside the internal fluid and co-axial with the axis of the fiber (Fig. 22.11). Oxygen enters this volume by convective transport with the liquid stream flowing along the fiber at z position and by diffusive transport through the cylinder lateral surface with radius (r + dr). Then, O2... 

The biggest step forward for the autogenous technology was the ability to safely store and transport gases under pressure in special steel cylinders. This is especially valid for acetylene for which special measures had to be taken as a result of its thermal instability (proneness to decomposition). Acetylene can only be stored and transported safely in steel cylinders if it is dissolved in a suitable liquid, such as acetone, at a maximum pressure of 25 bar and if the solvent with the acetylene dissolved in it is absorbed inside the steel cylinder by a porous mass which does not conduct heat well. The most urgent task of the national and international associations, e.g. Association for Autogenous Metal Processing e.V. , DVS... 

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