Closed compartment

The balance must of course be protected from draughts and from dust, and the balance pan is situated within an enclosure provided with glass doors which can be opened to provide access to the pan. The remainder of the balance, including the electrical components, is contained in a closed compartment attached to the rear of the pan compartment. 

Membranes are highly viscous, plastic structures. Plasma membranes form closed compartments around cellular protoplasm to separate one cell from another and thus permit cellular individuality. The plasma membrane has selective permeabilities and acts as a barrier, thereby maintaining differences in composition between the inside and outside of the cell. The selective permeabilities are provided mainly by channels and pumps for ions and substrates. The plasma membrane also exchanges material with the extracellular environment by exocytosis and endocytosis, and there are special areas of membrane strucmre—the gap junctions— through which adjacent cells exchange material. In addition, the plasma membrane plays key roles in cellcell interactions and in transmembrane signaling. 

Leaks in pipelines can be detected by means of a test-fluid. The test-fluid, a mixture of dimethyl sulfide in solvent, is injected into a pipeline. In the case of a leak, the test-fluid escapes through the leak, and the odorant is released from the closed compartments [1465,1466]. 

The next most important aspect is the issue of the oxygen depletion in the chamber. The atmosphere inside the closed compartment often becomes oxygen-deficient before the test ends. Thus, after the oxygen level gets below 14% burning often ceases. This means that, when testing thick samples (typically multi-layered materials or composites) one of the components may not get to burn at all. 

Solution-. The observed effect is the sum of two contributions, one of which is the electro-osmotic flow of the medium through the cell. The latter has its maximum value at the center since the layer of fluid adjacent to the walls is stationary. The particles tracked at the center of the cell therefore possess the maximum increment in velocity due to electroosmotic flow. Since the cell is a closed compartment, the liquid displaced by electroosmosis along the walls must circulate by a backflow down the center of the tube. Since the total liquid flow in a closed cell must be zero, the appropriate value from Figure 12.10a to use for the velocity is the average of observations made at all depths. ... 

For each compartment, a signature, i.e. a series of ks a numbers (one for each step), A,i<7 = sign ws a is written. This multitude is denoted as A and the corresponding closed compartment as PA. PA consists of those 2V for which... 

Biological membranes are sheetlike structures, typically from 60 to 100 A thick, that are composed of protein and lipid molecules held together by noncovalent interachons. Membranes are highly selechve permeability barriers. They create closed compartments, which may be enhre cells or organelles within a cell. Proteins in membranes regulate the molecular and ionic compositions of these compartments. Membranes also control the flow of informahon between cells. 

Cytome Everything to do with the cell. This includes the processes discussed above but also aspects of structure, such as closed compartments with the cell that separate metabolic processes, cytoskeletal (molecular scaffolding) organization, and cellular movement and behavior. 

Lysosomes provide an excellent example of the ability of Intracellular membranes to form closed compartments in which the composition of the lumen (the aqueous Interior of the compartment) differs substantially from that of the surrounding cytosol. Found exclusively in animal cells,... 

One of the most effective methods. In terms of sample capacity, for large scale Isoelectric focusing utilizes membranes to define subcompartments In an electrolyzer. The membranes prevent bulk flow between adjacent compartments while allowing the free migration of proteins. Rllbe has described several devices based on this principle (20). The most recent Is a 7.6 liter cell with 46 separation compartments (21). It has a cylindrical geometry with closed compartments. The contents of each compartment are effectively mixed and cooled by the slow rotation of the submerged apparatus In a tank of cold water. The device has fractionated 14g of whey protein Into the major components, albumin (pi 4.6), alpha-lactalbumln (pi =... 

On March 20, 1995, a terrorist attack using sarin occurred on the Tokyo subway. The sarin was mixed in organic solvent and vaporised in the closed compartment of a train. Many people inhaled the sarin gas and collapsed, Eventually, 12 people died and more than 5000 were injured (Suzuki et ah, 1995 Masuda et ai., 1995 Nozaki et ai, 1995). However, neither sarin nor its hydrolysis products were detected in the blood of almost all the sarin victims. It was concluded that sarin pa.ssed through the blood-brain barrier and became distributed in brain ti.ssuc. These facts suggest that various brain... 

All electrochemical preparations were made in argon atmosphere at room temperature in the preparation chamber of the spectrometer using an Eco Chemie PGSTATIO. ITie electrolyte was 50 mM H2SO4. The electrode was rinsed in water after each electrochemical modification (before each surface analysis). During surface analysis the electrolyte and the rinse bath were stored in a closed compartment in argon atmosphere. 

Fibres or Fabrics Impregnated with Weakly Nitrated Nitrocellulose, n.o.s. Toe board used in the manufacture of boots and shoes. When involved in a fire, evolves toxic fumes in closed compartments, these fumes may form an explosive mixture with air. IMO 4144-1... 

PEROXISOMES A CLOSED COMPARTMENT IMPLYING THE EXISTENCE OF METABOLITE TRANSPORTERS... 

The main problem of styrene is high emission, which restricts applications in closed compartments (e.g., naval application). Styrene emission is a health hazard (threshold value of 50 ppm). The need to rednce the volatile organic compound (VOC) is not only expressed in government regulations, but also equally and persuasively by various environmental concerns. The evaporation of styrene can be reduced by the addition of waxes or pyrogenic silicic acid with hydrophilic and hydrophobic end groups. However, such additives may affect the interfacial properties of composites made out of polyester resins. Some styrene-less UPE resin formulations using diacrylate monomers have been reported [71]. However, mostly styrene is used as a reactive diluent in UPE resins. 

This model for describing transmitter-receptor interaction can be identified with the stochastic model of closed compartment systems. Adopting the fluctuation-dissipation theorem the conductance spectrum of the postsynap-tic cell is determined by three qualitatively different factors ... 

Practice shows that a basic estimative attribute in the closed compartments under conditions of slight occurrence of surface relief elements is the underground relief—a karst rocks roof relief, and in particular, its elements inselbergs (slopes and... 

Prior to welding or burning on closed compartments, structures or pipes, which contain a flammable vapor or in which a flammable vapor may be generated by the work, they shall be vented, flooded, or purged with a mixture of gases which will not support combustion. 

The central role of biomembranes in cellular function underlines the importance of membrane research, an area that is by its very nature highly interdisciplinary and ranges from molecular biology to physical chemistry. At its core, however, is an essentially supramolecular interaction, the hydrophobic effect, which causes phospholipid amphiphiles to self-assemble into bilayers and then into complex closed compartments. The elegant self-assembly process that forms these remarkably large structures is an area of keen interest in its own right, but much recent study into self-assembled membranes aims to replicate the functions of biomembranes. Indeed, for cells, phospholipid bilayers are more than just delimiting boundaries they are... 

Synaptosomes. Synaptosomes are formed after homogenization of brain tissue and can be isolated by centrifugation. They are composed of the terminal parts of axons containing the synapses and form closed compartments containing either the presynaptic machinery, the postsynaptic machinery or both. 

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