Activation index modification

Effective Hamaker constant, 234 Emulsifying activity index, 186,188/ Emulsions, concentrated oil-in-water, effea of interdroplet forces on centrifugal stability, 229-245 Enhancers of taste. See Taste enhancers Enzymatic modification of soy proteins, 181-190... 

As is shown in Figure 3.14, KH-550 has the best modification effect on calcium sulfate whiskers with an activation index (99.6%) higher than that of other coupling agents. The sample modified with KH-550 cannot be wetted by water. Figure 3.15 shows the modification results of calcium sulfate whiskers affected by KH-550 concentration. Modification results become much better with an increase of KH-550 concentration. But the rising trend of activation index is no longer obvious when the concentration of KH-550 is more than 8 wt%. 

The activation index of treated calcium carbonate whiskers is measured. The results before and after modification of calcium carbonate whiskers are shown in Figure 5.6. 

Figure 5.6 Relationship between the activation index and the mass fraction of modification agent.

Figure 5.9 shows that the activation index is almost zero for unmodified calcium carbonate whiskers, but increases significantly after surface modification. Thus it can be seen that sodium stearate is effective in modifying calcium carbonate whiskers. When the concentration of the modifier is less than 4.5%, the activation index of the whiskers gradually increases. 

As shown in Table 5.1, different modification times have different effects on whiskers. The activation index of calcium carbonate whiskers approach a maximum of 93.4% when the processing time is 50 minutes. With an increase of processing time, more modifier molecules are adsorbed on the surface of the whiskers, and the effect of the modification increases gradually. When the processing time is up to 50 minutes, the modification agent can make sufficient contact with the whiskers and fully coat their surface to the maximum activation index. When the modification time extends further, the already adsorbed modification agent on the material surface desorbs, and the modification effect deteriorates. 

As can be seen from Table 5.2, the modification temperature has little effect on the activation index of calcium carbonate whiskers, and all the activation indexes are greater than 90%. Taking into account the temperature of the esterification... 

As seen from Table 5.3, the products modified by tita-nate NDZ-101, sodium stearate, stearic acid, and Zinc stearate acid zinc exert the highest activation index nevertheless, the modification effects of other modifiers are relatively poor. The results of contact angle also support this point. Among these four modifiers, sodium stearate modified products hold the maximum contact angle and have lower costs. ... 

Surface Modification Agent Activation Index (%) Contact Angle n... 

Stone JH, Hoffinan GS, Merkel PA, et al. A disease-specific activity index for Wegener s granulomatosis modification of the Birmingham Vasculitis Activity Score. International Network for the Study of the Systemic Vasculitides (INSSYS). Arthritis Rheum 2001 44(4) 912-920. 

Weight loss, through caloric restriction and increased physical activity, should be encouraged in patients who have a body mass index greater than 25 kg/m2. Dietary modification is important for risk factor management, and dietary counseling... 

A comparison of porphyrin and pincer activity rationalized through reactivity index Porphyrin and pincer complexes are both important categories of compounds in biological and catalytic systems. Structure, spectroscopy, and reactivity properties of porphyrin pincers are systematically studied for selection of divalent metal ions. It is reported that the porphyrin pincers are structurally and spectroscopically different from their precursors and are more reactive in electrophilic and nucleophilic reactions. These results are implicative in chemical modification of hemoproteins and understanding the chemical reactivity in heme-containing and other biologically important complexes and cofactors [45]. 

Clinicians must learn to appreciate the value of toxicovigilance. This means that preventive activities for poisoning, such as education of the patient and family or peers, could be done. Informing responsible authorities of an index poisoning case could lead to better and concerted epidemiological investigations and perhaps lead to better health warnings and policy modifications. 

Modification of the catechol ring can dramatically increase Pj activity, such as bronchodilation. The Pj/Pi index increases when a 3-OH group is substituted for a sulfonamide (soterenol, 4.56), hydroxymethyl (albuterol, 4.57), or methylamino group. Inclusion of the nitrogen into a carbostyryl ring (an a-dihydroquinolone) leads to a compound (4.58) that is 23,000 times more active than isoproterenol and also extremely selective. This compound carries a somewhat different N-substituent, a tert-butyl group, like albuterol. 

Modification of ZSM-5 zeolite can result in improved liquid yields and a doubling of the isoparaffin index of the liqnid fuels which indicates higher liquid quality compared with the parent ZSM-5 zeolite. The high catalytic activity of modified ZSM-5 was explained by its nniqne acidic properties with a sharp increase of the number and strength of weak acid sites and a decrease of strong acid sites [13]. 

The above definition of molecular chaperone is entirely fnnctional and contains no constraints on the mechanisms by which different chaperones may act. The term noncovalent is nsed to exclude those proteins that carry out posttranslational covalent modifications. Protein disulfide isomerise may seem to be an exception, bnt it is both a covalent modification enzyme and a molecular chaperone. It is helpful to think of a molecnlar chaperone as a fnnction rather than as a molecnle. Thns, no reason exists why a chaperone function shonld not be a property of the same molecnle that has other fnnctions. Other examples include peptidyl-prolyl isomerase, which possesses both enzymatic and chaperone activities in different regions of the molecnle, and the alpha-crystallins, which combine two essential fnnctions in the same molecnle in the lens of the eye-contribnting to the transparency and the refractive index reqnired for vision as well... 

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