Fermentation conditions for the cellulase producing were studied in shaking flasks by Bacillus sp. AC-2, including inoculum age, inoculum volume, initial pH value, fermentation temperature, carbon sources, ratio of C/N, nitrogen sources and surface active agent, etc.
When the concentration of macromolecular dispersant D and surface active agent DY were fixed at 0.5wt% and 0.035wt % water respectively,and if the agitating speed of the homogenizer was adjusted at 8.9m/s and the stirrer speed of the reactor at 2.6m/s,the color toners with 10μm average volume diameter could be prepared.
Inorganic membrane was used to deal with miscella(25%~30% crude oil,70%~75% hexane),and surface active agent was used to enhance the separation process.
When 1∶25(volume ratio of surface active agent to hexane)was used,93.30% and 96.09% phospholipids were removed by 0.05 μm and 0.01 μm membrance processing,respectively.
Results of study show that the bleaching effect is related to content of active oxygen,pH value,temperature, contents of surfactant and bleach activator;
Lecithin, as a kind of important physiological activator and natural surface active agent, offers many advantages to health, and is widely used in the fields of food, pharmacy and cosmetic.
Selecting course of combined filler, antioxidant, suspending agent and surface activator in the coating and the relationship between the density and coating thickness as well as permeability have been introduced in detail.
The paper introduces structure,varieties and properties of the surface activator siloxane,along with the application~ of siloxane and its modified products to cosmetics.
In this paper, such factors of its technical flow were investigated respectively as follows: synthesis of MPTA as a new bloking agents and accelerant and its influences on fermentation, the influences of Oxygen-vectors, Surface Active Agents on Lycopene's fermentation, and the effect factors of super-critical carbon dioxide extraction of Lycopene.
The voltammetric response is dependent on the nature of solid electrolyte and electrode, the balance between the substrate and active agent, and on the conditions of thermal treatment of electrodes.
Thus, peptide immobilization into PLGA microparticles may be employed for elaboration of a prolonged action preparation with the controlled release of the active agent (peptide).
The spectra indicate that the energy transfer takes place from the triplet excited state of MLCT (metal-to-ligand charge transfer) state for Sr2CeO4 (sensitizer) to the rare earth ions (activator).
In conclusion, all results indicate that BeDREB1 and BeDREB2 genes isolated from treated Bermuda grass are new members of the DREB transcription activator family, which may play very important roles in signal transduction related to stresses.
Synthesis of xylanolytic enzymes and other carbohydrases by the fungus Penicillium canescens: Transformants with an altered copy number of the gene xlnR and an encoding transcriptional activator
Compounds of 3-methyl-1-phenyl-4-{4-[(5-methyl-2-phenyloxazol-4-yl)methoxy]benzylene(benzyl)}-2-pyrazol-5-one were designed and synthesized to find some more hypoglycemic active agents and further investigate the SAR of this class of compounds.
The analysis of the nonisothermal displacement of oil by a solution of an active additive can be transferred without significant modifications to the general problem of displacement of oil by a solution carrying two active agents.
Among the new methods of enhanced oil recovery the most important are the processes of oil displacement by solutions of active agents (chemical reagents) capable of modifying the hydrodynamic characteristics of the porous flow system.
Aza podands having side α-aminomethylphosphine oxide groups were prepared and used as electrode-active agents in liquid membrane ion-selective electrodes.
This paper reports tests made ona new foundry coating. This coating, containing a small proportion of silicasol, some surfactants, and other auxiliaries, is a new sort of zircon water-base foundry coating. The new coating is durable and has satisfactory technical and working state properties. The production experiment shows that when applied to the clay moulds used in casting steel, this coating has a significant ability to prevent burn-on. Though this coating is somewhat more costly than common coatings an...
Different methods of drying α-and β-Copper Phthalocyanine were tried, and the relation between the capillary aggregation of the pigment and particle size distribution was investigated. In drying α-Copper Phthalocyanine, organic solvent flushing and salt co-precipitation were found not to induce any phase transformation when a proper solvent was used.
The process of separating mixed fatty acids in soap stock with surface activators is a process of separation considered fairly advanced both at home and abroad. The following paper, by means of a discussion upon the parameters of separation technology and through the designing of a medium -term trial workshop and trial production, lays emphasis on the introduction to separation principle, main factors which have a bearing on the separation effect, technology of separation, major equipment and the product qu...