Computer Simulation of Shape Evolutions of Plant Cells Based on Physical and Chemical Interactions

2021 ◽  
Author(s):  
Wenlong Yi ◽  
Deheng Zhao ◽  
Jun Yang ◽  
Tingzhuo Chen
Keyword(s):  
Computer Simulation ◽  
Plant Cells ◽  
Chemical Interactions ◽  
Physical And Chemical

scholarly journals Modelling of pollutants concentrations from the biomass combustion process

2011 ◽  
Vol 32 (4) ◽  
pp. 423-433 ◽  
Author(s):  
Aneta Magdziarz ◽  
Małgorzata Wilk ◽  
Monika Zajemska
Keyword(s):  
Computer Simulation ◽  
Coming Out ◽  
Combustion Process ◽  
Chemical Properties ◽  
Biomass Combustion ◽  
Physical And Chemical Properties ◽  
Influence Of Temperature ◽  
Complex Phenomena ◽  
Physical And Chemical ◽  
And Chemical Properties

Modelling of pollutants concentrations from the biomass combustion process This paper presents possibilities for of numerical modelling of biomass combustion in a commercially available boiler. A sample of biomass was tested with respect to its physical and chemical properties. Thermogravimetry studies of biomass were carried out. Computer simulation makes it possible to analyse complex phenomena which are otherwise difficult to observe. The aim of this work was to model biomass combustion to predict the amount of pollutants generated (NOx, CO, SO2) in the exhaust gases coming out from boilers The calculations were made using the CHEMKIN program. Results of calculations were performed taking into account the influence of temperature, pressure and residence time.

Physical and Chemical Interactions in Cold Gelation of Food Proteins

2002 ◽  
Vol 50 (16) ◽  
pp. 4682-4689 ◽  
Author(s):  
Arno C. Alting ◽  
Harmen H. J. de Jongh ◽  
Ronald W. Visschers ◽  
Jan-Willem F. A. Simons
Keyword(s):  
Chemical Interactions ◽  
Food Proteins ◽  
Physical And Chemical

scholarly journals Microfluidics-based Bioassays and Imaging of Plant Cells

2021 ◽  
Author(s):  
Naoki Yanagisawa ◽  
Elena Kozgunova ◽  
Guido Grossmann ◽  
Anja Geitmann ◽  
Tetsuya Higashiyama
Keyword(s):  
High Resolution ◽  
Agar Plate ◽  
Root Hairs ◽  
Plant Cells ◽  
Individual Plant ◽  
Experimental Systems ◽  
Surrounding Matrix ◽  
Sense And Respond ◽  
Physical And Chemical ◽  
Microfabrication Techniques

Abstract Many plant processes occur in the context of and in interaction with a surrounding matrix such as soil (e.g. root growth and root–microbe interactions) or surrounding tissues (e.g. pollen tube growth through the pistil), making it difficult to study them with high-resolution optical microscopy. Over the past decade, microfabrication techniques have been developed to produce experimental systems that allow researchers to examine cell behavior in microstructured environments that mimic geometrical, physical and/or chemical aspects of the natural growth matrices and that cannot be generated using traditional agar plate assays. These microfabricated environments offer considerable design flexibility as well as the transparency required for high-resolution, light-based microscopy. In addition, microfluidic platforms have been used for various types of bioassays, including cellular force assays, chemoattraction assays, and electrotropism assays. Here, we review the recent use of microfluidic devices to study plant cells and organs, including plant roots, root hairs, moss protonemata, and pollen tubes. The increasing adoption of microfabrication techniques by the plant science community may transform our approaches to investigating how individual plant cells sense and respond to changes in the physical and chemical environment.

scholarly journals On the Advanced Technique of Mathematical and Computer Simulation of Filtration Processes in Porous Media under the Influence of Physical and Chemical Factors

2019 ◽  
pp. 33-34
Author(s):  
Volodymyr Gerus
Keyword(s):  
Computer Simulation ◽  
Porous Medium ◽  
Porous Media ◽  
Advanced Technique ◽  
Variable Porosity ◽  
Continuity Equations ◽  
Mathematical And Computer Simulation ◽  
Chemical Factors ◽  
Physical And Chemical

The proposed improvement of the technique for deriving filtration equations in soils with variable porosity is described. The technique is based on the application of the apparatus of complete derivatives in the soil phase continuity equations. Examples of filtration equations in the case of a deformable and non-deformable skeleton of a porous medium are given.

Physical and chemical interactions in pH-induced aggregation and gelation of whey proteins

2007 ◽  
pp. 49-57 ◽  
Author(s):  
Aron C. Altinǵ ◽  
Rob J. Hamer ◽  
Cees G. de Kruif ◽  
Harmen H. J. de Jongh ◽  
Jan-Willem F. A. Simons ◽  
...  
Keyword(s):  
Whey Proteins ◽  
Chemical Interactions ◽  
Physical And Chemical ◽  
Induced Aggregation

scholarly journals Investigation of the Optical, Physical, and Chemical Interactions between Diammonium Hydrogen Phosphate (DAP) and Pigments

2019 ◽  
Vol 11 (14) ◽  
pp. 3803 ◽  
Author(s):  
Xiao Ma ◽  
Hélène Pasco ◽  
Magdalena Balonis ◽  
Ioanna Kakoulli
Keyword(s):  
Wall Painting ◽  
Wall Paintings ◽  
Reaction Products ◽  
Hydrogen Phosphate ◽  
Chemical Interactions ◽  
Diammonium Hydrogen Phosphate ◽  
Red Lead ◽  
Physical And Chemical ◽  
Diammonium Hydrogen ◽  
Lapis Lazuli

This research investigates and evaluates the optical, physical, and chemical interactions between a diammonium hydrogen phosphate (DAP) solution and seven pigments commonly encountered in archaeological and historic fresco and secco wall paintings and polychrome monuments. The pigments include cinnabar, French ochre, chalk, lapis lazuli, raw sienna, burnt umber, and red lead. The raw pigments were analyzed before and after the interaction with the DAP solution, and the reaction products resulting from the contact of the pigments with the DAP solution were evaluated to obtain a comprehensive understanding of the effects of diammonium phosphate on the color, morphology, and chemical composition of the pigments. The results indicated no significant changes of the color or of the chemistry of cinnabar, French ochre, and lapis lazuli. Carbonate-containing primary and secondary (found as impurities in earth pigments) pigments, such as chalk and calcium carbonate, were transformed into calcium phosphate, though without a significant change in color. Phase and strong color changes occurred only for the red lead pigment, associated with the transformation of red lead into hydroxypyromorphite. These data established the parameters and identified the risks of the direct application of DAP solutions on pigments. Further research will be undertaken to assess the potential use of DAP as a consolidant of wall paintings and other polychrome surfaces through testing on wall painting/polychromy mockups and on-site archaeological/historic painted surfaces.

A generalized approach to the description of interaction boundaries in migrating systems

1965 ◽  
Vol 163 (992) ◽  
pp. 343-368 ◽  
Keyword(s):  
Moving Boundary ◽  
Migration Pattern ◽  
Chemical Interactions ◽  
Boundary Equation ◽  
Migration Patterns ◽  
Simplified Approach ◽  
Constituent Species ◽  
Physical Interactions ◽  
Total Composition ◽  
Physical And Chemical

Patterns observed in the migration of a system of n solutes, where n ⋟ 1, are affected by the operation of either physical or chemical interactions or both. The effects of the two types of interactions have previously been considered separately by widely different approaches, leading in certain instances to the complete description of migration patterns. In the present work a unified and simplified approach is presented, which permits a complete mathematical description of all features of the migration pattern, provided the dependence of constituent velocities on total composition is defined for each constituent species. Emphasis is given to systems involving one or two migrating solutes. In particular, criteria have been established for sharp, spread and hypersharp boundary forms. The treatment, in common with some previous approaches, neglects the effects of diffusional spreading, and considers only time-independent interactions. The general theory is first illustrated with chemically associating systems, and the examples include descriptions of cases involving two solutes, which have been previously explained by physical argument alone. The operation of physical interactions is also treated by the theory, both by selecting appropriate models and by introducing general functions. Finally, the moving boundary equation is applied to selected migration patterns, modified by both physical and chemical interactions.

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