Influence of grade

Spread in ratios reflects the influence of grade of resin and orientation of production (in or normal to machine direction). 

Kritchevsky, D., Tepper, S.A., Wright, S., Czarnecki, S.K. 2002. Influence of graded levels of conjugated linoleic acid (CLA) on experimental atherosclerosis in rabbits. Nutr. Res. 22, 1275-1279. 

Maes, M.A. Dann, M. Salama, M.M. Influence of grade on the reliability of corroding pipelines. Reliability Engineering and System Safety 93 (2008) 447-455. 

Iron—Aluminum and Iron—Aluminum—Silicon Alloys. The influence of aluminum on the physical and magnetic properties of iron is similar to that of silicon, ie, stabilization of the bcc phase, increased resistivity, decreased ductility, and decreased saturation magnetization, magnetocrystalline anisotropy, and magnetostriction. Whereas Si—Ee alloys are well estabHshed for electrical appHcations, the aluminum—iron alloys have not been studied commercially. However, small (up to ca 0.3%) amounts of A1 have been added to the nonoriented grades of siHcon steel, because the decrease in ductiHty is less with A1 than with Si. 

Fig. 25. Influence of temperature in injection moulder on anisotropy behaviour at the surface of injection moulded PE ( ) high molecular grade PE (M 450 000) (O) typical-moulding grade (M -100000) 18>...

The estimation of reactivity of polyhalomethanes in the reactions with the same monomer shows that the quantity of halogen atoms in a molecule is the most essential factor affecting the easiness of homolysis of even one C— Br bond in molecule, and the influence of the halogen nature (chlorine or bromine) is of less significance. For instance, the analysis of the data on relative kinetics of some polyhalomethanes reactions with vinyl chloride allows us to grade the studied polyhalomethanes according to their reactivity, as follows ... 

Raw materials and auxiliary products used in a process as well as materials of construction for equipment items can be the eause of scale-up effects . Pure raw and auxiliary materials must be used in laboratory studies to eliminate the influence of impurities on the ehoice of the process route, catalyst selection, and search for satisfactory process conditions. However, pure chemicals are usually too expensive to use for manufacture on a commercial scale. It is common practice to use raw materials of technical grade in a full-scale plant. These materials contain impurities, which can act as catalysts or inhibitors. They can react with reactants or intermediates, thereby decreasing yields and selectivities of desired produets. Therefore, raw materials of technical grade, even from different suppliers must first be tested on laboratory scale. 

Prescott, C.A., B.N. Wilke, B. Hunter, and R.J. Julian. 1982. Influence of apurified grade of pentachlorophenol on the immune response of chickens. Amer. Jour. Veterin. Res. 43 481 -487. 

The influence of pressure, over the range 100-1600 kN/m2, on the fluidisation of three grades of sand in the particle size range 0.3 to 1 mm has been studied by Olowson and Almstedt(50) and it was showed that the minimum fluidising velocity became less as the pressure was increased. The effect, most marked with the coarse solids, was in agreement with that predicted by standard relations such as equation 6.14. For fine particles, the minimum fluidising velocity is independent of gas density (equation 6.5 with Ps >> P), and hence of pressure. 

Grades reinforced with fibres 20 mm and more in length cannot be processed on conventional equipment. It is necessary to use, for example, the extrusion-compression technique. The process differs too much from conventional injection used for short glass fibre reinforced thermoplastics to measure the influence of fibre length alone. 

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