Comparison of ZrO2-SiO2 sols synthesized by two methods: Preparation, stability and physical-chemical structure

2019 ◽  
Vol 198 (1) ◽  
pp. 167-178
Author(s):  
Jing Yang ◽  
Debao Jia ◽  
Bo Li ◽  
Yingming Guo ◽  
Hongji Li ◽  
...  
Keyword(s):  
Chemical Structure ◽  
Physical Chemical

Chemical structure and physical-chemical properties of mucilage from the leaves of Pereskia aculeata

2017 ◽  
Vol 70 ◽  
pp. 20-28 ◽  
Author(s):  
Andressa Amado Martin ◽  
Rilton Alves de Freitas ◽  
Guilherme Lanzi Sassaki ◽  
Paulo Henrique Labiak Evangelista ◽  
Maria Rita Sierakowski
Keyword(s):  
Chemical Structure ◽  
Chemical Properties ◽  
Physical Chemical

Cyber-Physical Infrastructures for Advancing Pyrolysis Conversion Process: A Case Study of Biochar Production

2020 ◽  
Author(s):  
Benjamin Hersh ◽  
Amir Mohajeri ◽  
Amin Mirkouei ◽  
Min Xian
Keyword(s):  
Chemical Structure ◽  
Conversion Process ◽  
Substantial Portion ◽  
Process Yield ◽  
Biomass Feedstocks ◽  
Yield And Quality ◽  
Physical Chemical ◽  
Bio Oil ◽  
Market Needs

Abstract Biomass-based products (bioproducts) have been introduced as a means to address food-energy-water nexus challenges. However, the existing approaches have not been integrated to convert biomass into market-competitive bioproducts (e.g., biochar and bio-oil). Pretreatment and conversion processes represent the most substantial portion of the total bioproduct cost. This study proposes a portable conversion process for high-quality biochar and bio-oil production, using mixed reactors and advanced cyber-physical infrastructures to promote cross-cutting technological and commercialization opportunities. The proposed portable process converts biomass to bioproducts near the collection sites, which can address collection, staging, and logistics challenges. The fundamental novelty of this study lies in utilizing cyber-physical technologies for advancing pre-/post-conversion processes and crossing the boundaries to meet the market needs. A case study for biochar production from various biomass feedstocks is used to demonstrate and verify the application of the conversion process and the cyber-based advances. The results indicate that the integrated cyber-physical conversion pathway can increase process yield and quality. It is also found that biomass properties and conversion process configurations play a crucial role in determining the process yield and biochar quality in terms of the physical-chemical structure.

Preparation of Glutinous Rice Starch Nanofibers by Electrospinning

2012 ◽  
Vol 506 ◽  
pp. 230-233 ◽  
Author(s):  
P. Jaiturong ◽  
Krit Sutjarittangtham ◽  
Sukum Eitssayeam ◽  
Jakkapan Sirithunyalug
Keyword(s):  
Chemical Structure ◽  
Chemical Properties ◽  
Rice Starch ◽  
High Porosity ◽  
High Voltage Power Supply ◽  
Electrospinning Technique ◽  
Physical Chemical ◽  
Glutinous Rice ◽  
Ft Ir ◽  
Basic Characteristics

Glutinous rice starch (GRS) is produced from glutinous rice which is commonly cultivated in the Northeast of Thailand. GRS contains two types of glucose polymers which are amylose and amylopectin. Glutinous rice starch nanofibers (GNF) can be produced by an electrospinning technique. This is not a complicated method but needs a high voltage power supply. The aim of this study was to understand the production of GNF and physical-chemical properties of GNF. The morphology of GNF was examined by scanning electron microscopy. The characteristics of GNF are high porosity, flake multi-layers and a high swelling power. The Electrospinning technique did not change the chemical structure of GRS based on an FT-IR evaluation. This research revealed the basic characteristics of electrospun glutinous starch for use in various applications in the future.

scholarly journals Heating Characteristics of Film Prepared with Polymer Composites Containing Graphite

2018 ◽  
Author(s):  
Seojin Kim ◽  
Weontae Oh ◽  
Jong-Seong Bae ◽  
Jeong Hyun Yeum ◽  
Jaehyung Park ◽  
...  
Keyword(s):  
Thermal Imaging ◽  
Chemical Structure ◽  
Heating Temperature ◽  
Infrared Thermal Imaging ◽  
Dc Voltage ◽  
Copper Electrodes ◽  
Physical Chemical ◽  
Imaging Camera ◽  
Pet Film ◽  
The Relationship

Heating films were prepared by using poly(methyl methacrylate) and polybutadiene composites containing graphite. The heating film was prepared by casting the as-made polymer composite on PET film. Copper electrodes were attached to both ends of the as-prepared film, and the heating characteristics of the film was analyzed while applying DC voltage. The electrical conductivity and the heating temperature of the heating films depended on the size, the structure, the content and the dispersion characteristics of the graphite in the composite. The electrical resistance of the heating film was controlled to adjust the heating temperature of the film. The relationship between the physical/chemical structure and the heating characteristics of the composite film was studied by measuring the heating temperature as functions of film thickness and resistance by using an infrared thermal imaging camera. The lower the film resistance, the higher the heating temperature of the film. The surface temperature was uniform throughout the film.

scholarly journals Packages: The Atoms of Communication

1970 ◽  
Vol 5 (2) ◽  
pp. 82-86
Author(s):  
Assen I. Dimitrov
Keyword(s):  
Simple Model ◽  
Chemical Structure ◽  
States Of Affairs ◽  
Physical Chemical

A simple model of communication, the problems it poses and the conclusions at which it arrives are proposed. The following items are discussed. 1. The model: What interacts during communication are wrapped up objects, packages; packages can communicate only through signals; agents can respond only to their own interpretation of the signal that reaches them, i.e. to the meaning they assign to it. 2. Thus, some problems of communication, engendered by this model are: What is inside the partner package? Is communication just a discourse between the partners, or is it a real interac-tion, after all? 3. Finally, some implications of the model: Through communication, reality is inserted into semiotic (linguistic) settings; hence, reality turns into a proposition (sentence), rather than a physical-chemical structure; ‘states of affairs’ turn into statements; situations are stated, commu-nicated, problematised and resolved; reality, likewise the proposition, acquires meaning.

scholarly journals Heating Characteristics of Films Prepared with Polymer-Graphite Composites

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Seojin Kim ◽  
Weontae Oh ◽  
Jong-Seong Bae ◽  
Seong Baek Yang ◽  
Jeong Hyun Yeum ◽  
...  
Keyword(s):  
Thermal Imaging ◽  
Chemical Structure ◽  
Heating Temperature ◽  
Infrared Thermal Imaging ◽  
Copper Electrodes ◽  
Physical Chemical ◽  
Imaging Camera ◽  
Pet Film ◽  
Graphite Composites ◽  
The Relationship

Heating films were prepared by using poly(methyl methacrylate) and polybutadiene composites containing graphite. The heating film was prepared by casting the as-made polymer composite on the PET film. Copper electrodes were attached to both ends of the as-prepared film, and the heating characteristics of the film were analyzed while applying the DC voltage. The electrical conductivity and the heating temperature of the heating films depended on the size, the structure, the content, and the dispersion characteristics of the graphite in the composite. The electrical resistance of the heating film was controlled to adjust the heating temperature of the film. The relationship between the physical/chemical structure and the heating characteristics of the composite film was studied by measuring the heating temperature as functions of film thickness and resistance by using an infrared thermal imaging camera. The lower the film resistance, the higher the heating temperature of the film. The surface temperature was uniform throughout the film.

scholarly journals On the Degree-Based Topological Indices of Some Derived Networks

Mathematics ◽  
2019 ◽  
Vol 7 (7) ◽  
pp. 612 ◽  
Author(s):  
Haidar Ali ◽  
Muhammad Ahsan Binyamin ◽  
Muhammad Kashif Shafiq ◽  
Wei Gao
Keyword(s):  
Chemical Structure ◽  
Chemical Properties ◽  
Chemical Compounds ◽  
Wiener Index ◽  
Topological Indices ◽  
Theoretical Chemistry ◽  
Zagreb Index ◽  
Entire Structure ◽  
Physical Chemical ◽  
Chemical Descriptors

There are numeric numbers that define chemical descriptors that represent the entire structure of a graph, which contain a basic chemical structure. Of these, the main factors of topological indices are such that they are related to different physical chemical properties of primary chemical compounds. The biological activity of chemical compounds can be constructed by the help of topological indices. In theoretical chemistry, numerous chemical indices have been invented, such as the Zagreb index, the Randić index, the Wiener index, and many more. Hex-derived networks have an assortment of valuable applications in drug store, hardware, and systems administration. In this analysis, we compute the Forgotten index and Balaban index, and reclassified the Zagreb indices, A B C 4 index, and G A 5 index for the third type of hex-derived networks theoretically.

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