Sensitizers reactivity

Low temperature steam and formaldehyde Reactive chemical Indicator paper impregnated with a formaldehyde-, steam- and temperature-sensitive reactive chemical which changes colour during the sterilization process Gas concentration, temperature, time (selected cycles)... 

In the course of our successful synthesis, we identified several limitations of our new method and associated strategy (1) the harsh conditions of the bicyclization reaction do not tolerate base-sensitive functionality such as vinyl halides (2) post-cyclization manipulations such as iododesilylation reactions are complicated by the sensitive/ reactive functionality of the products (a,p-unsaturated aldehyde, indoline, etc.) and (3) the incorporation of the required functionality into the Zincke aldehyde requires the synthesis of a complex tryptamine derivative, resulting in a lengthy, non-convergent route. In order to develop a concise route to strychnine, we would have to address each of these issues, and a straightforward solution to obviate all of these is described below. 

Rieke reported in the early 1970s the preparation of highly reactive metal forms by the reduction of metal halides with alkali metals19. In the original work, anhydrous ZnBr2 in dry THF was refluxed for 4 h with potassium affording a finely divided slurry of an air-sensitive reactive metal, denoted as Zn (equation 5)43. 

Liu, Q. Xiao, J. Synthesis of tetrahydrofuran from butanediol by pressure-sensitive reactive distillation. Jisuanji Yu Yingyong Huaxue 2001, 18 (2), 123-126. 

A unified science of adhesion is still being developed. Adhesion can result from mechanical bonding between the adhesive and adherend and/or primary and/or secondary chemical forces. Contributions through chemical forces are often more important and illustrate why nonpolar polymeric materials such as polyethylene are difficult to bond, although polycyanoacrylates are excellent adhesives. Numerous types of adhesives are available such as solvent-based, latex, pressure-sensitive, reactive, and hot-melt adhesives. 

Dmg delivery system mainly is consisting of two components, the active part, the dmg itself and the dmg carrier. CDDS or stimuli responsive dmg delivery systems has the third part, the sensitive or sensitive-reactive functionality and it is required to act following some strict mles in order to improve the therapeutic efficacy. They have to precisely spatial and temporal delivery of therapeutic agents... 

From Doleiden et al. (1974). Photooxidation was carried out in pyridine with protophorphyrin IX as sensitizer. Reactivity was based on amount of lipids consumed measured by gas chromatography at nearly equal extent of reaction. 

Based on the above precedent, we were interested in carrying out a study on the DCA-sensitized reactivity of 2-aza-1,4-dienes 1, 7a,7b, 8, 9, and 10a,10b to determine whether these compounds would behave similarly to the 1,4-dienes reported by Zimmerman or undergo alternative reactions. The results obtained were unexpected and have opened novel and very interesting lines of research. 

This experiment is designed to acquaint the participant with the use of the danger coefficient method to measure the absorption cross sections of certain elements. The experiment consists of a measurement of the sensitivity of the AGN-201 reactor at the core center with a standard l/v-absorber and subsequent cross-section measurements of a selected group of materials in terms of the reactor sensitivity. Reactivity will be determined by measurement of positive periods with and without the material in the reactor core. The excess reactivity of the supercritical reactor is related directly to the positive period measurement through the basic inhour equation. The results of the experiment will be compared with the known thermal cross sections and a complete analysis of any discrepancies will be made. 

The absorption area (cross section) of a black absorber (like cadmium) will not change with neutron velocity (or temperature). The absorption "area" (cross section) of boron (a l/v absorber), however, will change with neutron temperature. Since an absorber will change the reactivity, we may calibrate the sensitivity (reactivity/area of absorber) of a reactor using a black absorber whose absorption area is constant. 

Eastman Kodak Co. Heat sensitive reactive products of hexaarylbiimidazole and antihalation dyes... 

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