Extrinsic waste

Extrinsic wastes are more functional in nature and are not necessarily inherent to a specific process configuration. These may occur as a result of unit upsets, selection of auxiliary equipment, fugitive leaks, process shutdown, sample collection and handling, solvent selection, or waste handling practices. Extrinsic wastes can be, and often are, reduced readily through administrative controls, additional maintenance or improved maintenance procedures, simple recycling, minor... 

A recent study of programs for existing facilities of several companies reveals that a pollution-prevention initiative will tend to progress in stages.9 After a training period and an audit of the wastes in the process, the first reduction efforts emphasize the simple, obvious, and most cost-effective alternatives and are generally directed at extrinsic wastes. 

Extrinsic detectors, 22 180 Extrinsic fiber-optic sensors, 11 148 Extrinsic photoconductors, 19 138 Extrinsic semiconductors, 22 236-237 Extrinsic wastes, 10 68 Extruded food packaging, 18 45 Extruded lead-copper alloys, 14 776 Extruded lead-tellurium alloys, 14 778 Extruded rigid foam, 23 404-405 Extruders... 

A way to classify wastestreams is to consider them intrinsic, extrinsic, or somewhere in-between. Intrinsic wastes are inherent in the fundamental process configuration, whereas extrinsic ones are associated with the auxiliary aspects of the operation. 

Recommendations on subclassifications of the basic classes of exempt, low-hazard, and high-hazard waste defined in Section 6.2.2 are not developed in this Report. However, NCRP acknowledges that subclassifications of basic waste classes would be reasonable, particularly in the case of low-hazard and high-hazard wastes. NCRP believes that any such subclassifications should be consistent with the physical, chemical, radiological, and toxicological properties of waste, and with requirements for safe management and disposal. NCRP believes that extrinsic and non-risk-related factors, such as the source of a waste, should not be used in subclassifying risk-based waste classifications. 

The commonest affliction of skeletal muscle is weakness and wasting due to a variety of causes, many of which may be extrinsic to the muscle itself. Throughout history these have been known simply as the palsies. The rapid advance of neurological knowledge, however, has led to more precise understanding of the commoner extrinsic causes. 

Atrogenes" are a common set of genes whose expression is coordinately induced or suppressed in muscle during generalized wasting states (such as fasting, cancer cachexia, renal failure, and diabetes) [36,45]. These can be activated by intrinsic or extrinsic mnscle-fiber abnormalities. 

Tiwari, M., Guha, S., Harendranath, C., Tripathi, S., 2006. Influence of extrinsic factors on granulation in UASB reactor. Applied Microbiology and Biotechnology 71 (2), 145—154. Ufkun Kiran, E., Trzcinski, A.P., Liu, Y., 2015. Enhancing the hydrolysis and methane production potential of mixed food waste by an effective enzymatic pretreatment. Bioresource Technology 183, 47—52. 

Sheeting die is a kind of extmsion die with a flat slot die lip that nsnally nsed for the molding of plastic sheet or flat film. The common sheeting die structures include T-shape die, fish-tail die and hanger die. Optimization for a sheeting die is to achieve a imiform flow distribution on the die lip so as to assme the qnality requirement on the extrinsic feature, mechanical property and dimensional precision of the final products. However, control for the process parameters and die stmctnre is now mainly depended on the experiences derived Ifom many times of trial and error method which inevitably cause a great waste of time and cost. 

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