نتایج جستجو برای: Secondary reaction
تعداد نتایج: 701613 فیلتر نتایج به سال:
Background and aims: Car Accident reports shows that the main cause of accidents is driver error and unsafe behavior. Workload of the major factors affecting driver that has a direct impact on the incidence of traffic accidents. This study aimed to evaluate aspects of mental work load of auditory-verbal secondary task was performed while driving. Methods: Twenty professional bus driver randoml...
Reaction constants and heat release during thermophilic aerobic digestion of typical secondary and mixed sludges were determined. Maximum reaction constant, determined by measuring the amounts of biodegradable volatile suspended solids (bVSS) removed, occurred in the temperature range of 55-60 ºC. Measurement of heat releases were carried out, at the same range, by the aid of a temperature ...
reaction constants and heat release during thermophilic aerobic digestion of typical secondary and mixed sludges were determined. maximum reaction constant, determined by measuring the amounts of biodegradable volatile suspended solids (bvss) removed, occurred in the temperature range of 55-60 ºc. measurement of heat releases were carried out, at the same range, by the aid of a temperature prog...
abstract in aggregate, active forms of reactive silica with mineral names are sometimes associated with sand and gravel in concrete mixture. alkali hydroxides originated from alkalis in the cement or other resources form an alkaline silica gel with this reactive silica which becomes swallowed and expanded during time causing damage to concrete. there have been growing researches on alkaline r...
silica-bonded n-propyldiethylenetriamine sulfamic acid (spdtsa) is employed as a recyclable heterogeneous solid acid catalyst for the synthesis of benzopyrano[2,3-d]pyrimidines through one-pot condensation reaction of salicylaldehydes, malononitrile and secondary amines at room temperature under solvent-free conditions. spdtsa showed much the same efficiency when used in consecutive reaction ...
in this thesis, a better reaction conditions for the synthesis of spirobarbiturates catalyzed by task-specific ionic liquid (2-hydroxy-n-(2-hydroxyethyl)-n,n-dimethylethanaminium formate), calcium hypochlorite ca(ocl)2 or n-bromosuccinimide (nbs) in the presence of water at room temperature by ultrasonic technique is provided. the design and synthesis of spirocycles is a challenging task becaus...
the self-talk is one of psychological interventions that can be effective on improving and success in the motor performance and sport performance. so, the aim of the present study was to investigation effectiveness the motivational self-talkon secondary task performance (discrimination reaction time). 30 subjects have participated of the 160 students studying at the undergraduate from faculty o...
Nine patients with secondary syphilis and one control subject were observed for eight hours after the administration of penicillin. Serial clinical observations were made, and blood samples were obtained for the analysis of complement, histamine, and kininogen. Six patients showed Jarisch-Herxheimer reactions, the intensities of which were found to parallel certain changes in activity of comple...
Secondary quasiperiodicity (period-doubled oscillations modulated by an incommensurate frequency), or ”Q2,” is the temporal manifestation of quasiperiodic motion on period-doubled tori. The existence of this regime in a chemical reaction was first predicted (T.V. Bronnikova, W.M. Schaffer and L.F. Olsen, J. Chem. Phys., 1996, 105, 10849) in the course of numerical explorations of a detailed mod...
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