Critical organ

Fluid catalytic cracking rapidly overtook its competitors as both a source of fuel and of critical organic intermediates. Prior to 1942, the Houdry Process controlled 90 percent of the catalytic fuel market. But only three years later, in 1945, fluid cracking led all other catalytic cracking processes in market share (40 percent). At this time Thermofor technology stood at 31 percent, and Houdry at less chan 30 percent. 

Systemic poisons attack organs other than the site of contact. The critical organs arc the kidneys, liver, blood and bone marrow. 

Radionuclide Critical organ Physical Biological Effective... 

Table 25—Critical organs for 141 Ce,, 43Ce, and, 44Ce as specified in 1CRP Publication 2 (ICRP, 1959)...

Doses to sections of the GI tract were calculated according to the model presented in ICRP (1959). The critical organ for each of these nuclides is indicated in Table 25 for each solubility class and for the two modes of exposure considered in that publication. 

Any other critical organ Stored for 10,000 years maximum cumulative release allowed to the accessible environment per 1000 metric tons of heavy metal during storage <0.25 mSv (<0.025 rem)/year 3, 24... 

Many examples of post-critical organization in the form of dissipative structures have been recognized, but a detailed analysis of transition through a critical point has never been achieved. A theory of chemical reaction far from equilibrium, therefore is a long way off, but some progress has been made towards the understanding of critical phenomena associated with phase transformation. 

There is a critical organic content required for incineration without the need for additional fuel, and Figure 10.5 shows the relationship between organic content and combustibility. 

The integrated function of the vasculature and heart, as a closed circulatory system, supplies nutrients and oxygen to critical organs and removes metabolic wastes and carbon dioxide. This integrated system results from the careful control of cardiac output, arterial blood pressure (systolic and diastolic pressures integrated to derive mean arterial pressure), and systemic vascular resistance, thereby maintaining blood perfusion through... 

O. 183 450, 0.148 500, 0.119 550, 0.096 600, 0.078. Special precautions Bone is the critical organ in terms of dose. The effective biological half-life in humans is nearly 20 years. Double gloving is recommended when working with this radionuclide. 

Special precautions The maximum range in air is 6 meters, and the maximum range in water is 8 mm. Because bone concentrates phosphate, is the critical organ in terms of dose. Store this radioisotope behind 1-3 cm Lucite shielding. Avoid working over open containers, and exercise institutional guidelines on the type and location of dosimeters. 

A. Blood glucose levels must be maintained within a relatively constant range to supply critical organs and tissues (such as brain, RBCs, cornea, lens, kidney medulla, and testes), even when intake of dietary carbohydrates is low. 

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