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Online since: October 2010
Authors: Martin Losada, Katherine Mackie, Joseph H. Osborne, Santanu Chaudhuri
In addition, the sensitivity of the contact angles
towards functional groups and nanoscale roughness are tested using varying molecular structures.
When these Si-O cage structures are incorporated into organic polymers, exciting possibilities for the development of new materials are often realized [1], with properties superior to the original organic polymer.
Fig. 3: Optimized geometry of a PC dimer structure.
It is worth noting that the computed UV spectrum for PC is based on a dimer prototype structure and it is taken as a model for qualitative discussions.
Cramer: Essentials of Computational Chemistry: Theories and Models, West Sussex, England, 2002
When these Si-O cage structures are incorporated into organic polymers, exciting possibilities for the development of new materials are often realized [1], with properties superior to the original organic polymer.
Fig. 3: Optimized geometry of a PC dimer structure.
It is worth noting that the computed UV spectrum for PC is based on a dimer prototype structure and it is taken as a model for qualitative discussions.
Cramer: Essentials of Computational Chemistry: Theories and Models, West Sussex, England, 2002
Online since: March 2022
Authors: Rahul Das, Subhodeep Barman, Jagadish Kumar, Arnab Kumar Das, Suranjan Sikdar, Abhijit Biswas, Ananthakrishnan Srinivasan
The plane wave cutoff energy of 300 Ry with Monkhorst Pack 12´12´10 k-point mesh was used to obtain the structure convergence.
Here, the unit of structure can be the atom/ the lattice volume/ the crystallite size.
We have found that Young’s modulus and the rigidity modulus of nanocones and nanofibers structures are very close to each other.
Density of state (DOS) and corresponding band structures of ZnO.
XRD data confirmed that the two ZnO nanocrystals consist of a single-phase hexagonal wurtzite structure with no other phases.
Here, the unit of structure can be the atom/ the lattice volume/ the crystallite size.
We have found that Young’s modulus and the rigidity modulus of nanocones and nanofibers structures are very close to each other.
Density of state (DOS) and corresponding band structures of ZnO.
XRD data confirmed that the two ZnO nanocrystals consist of a single-phase hexagonal wurtzite structure with no other phases.
Online since: November 2012
Authors: Qi Hua Wang, Bai Xing Liu, Ting Mei Wang, Gai Zhao
Talc is a versatile material, encountered in a wide range of industrial processes because of its layered platelike structure.
UV radiation may induce photooxidation degradation of the surface of the polyimide, not destroyed its structure.
Differently, AO irradiation changed the surface morphology of polyimide dramatically, which the surface shifted from smooth structure to rough structure.
Subsequently, the surface structure was destroyed.
Visentine, EOIM-III mass spectrometry and polymer chemistry, J.
UV radiation may induce photooxidation degradation of the surface of the polyimide, not destroyed its structure.
Differently, AO irradiation changed the surface morphology of polyimide dramatically, which the surface shifted from smooth structure to rough structure.
Subsequently, the surface structure was destroyed.
Visentine, EOIM-III mass spectrometry and polymer chemistry, J.
Online since: April 2024
Authors: Wikoramet Teeka, Khemthat Srisujaritpanich, Pattara Somnuake, Sirirat Wacharawichanant
The resulting lignin has a structure of syringlyl unit (S) and guaiacyl unit (G) because use eucalyptus is a shaft wood use in the paper industry.
The structure of lignin did not show cavities and cracks when precipitated with acetic acid.
The structure of the lignin treated AKD resembles free AKD adheres to or reacts with the lignin.
Chemical Structure For FT-IR spectra of PLA, PLA/lignin and PLA/lignin treated AKD composites are displayed in Fig. 5.
Corma, Synthesis of transportation fuels from biomass: chemistry, catalysts, and engineering, Chem.
The structure of lignin did not show cavities and cracks when precipitated with acetic acid.
The structure of the lignin treated AKD resembles free AKD adheres to or reacts with the lignin.
Chemical Structure For FT-IR spectra of PLA, PLA/lignin and PLA/lignin treated AKD composites are displayed in Fig. 5.
Corma, Synthesis of transportation fuels from biomass: chemistry, catalysts, and engineering, Chem.
Online since: August 2018
Authors: Santina Di Salvo
The relationship between Architecture and Nature is a driving force in the development of research lines intersecting multidisciplinary methodologies that go beyond the architectural project and involve disciplines such as Materials Science, Chemistry, Nanotechnology, Ecology and Biomimetics.
These fascinating structures maintain the ventilation of termite nests that are actually subterranean.
At first, it was thought to add sugar to the mixture, which would have compromised the mechanical properties of the structure.
Hygroscopic structures.
Santini, Struttura e progetto: sperimentazioni in bambù / Structure and design: experimentations in bamboo, Agathon 2 (2017) 135-140
These fascinating structures maintain the ventilation of termite nests that are actually subterranean.
At first, it was thought to add sugar to the mixture, which would have compromised the mechanical properties of the structure.
Hygroscopic structures.
Santini, Struttura e progetto: sperimentazioni in bambù / Structure and design: experimentations in bamboo, Agathon 2 (2017) 135-140
Online since: February 2023
Authors: Payam Ismael Abdulrahman, Dilshad Kakasor Jaf
The primary concern for concrete structures is durability.
Crack formation is a significant flaw in concrete structures.
To extend the service life of concrete structures, cracks must be controlled and repaired [6].
Since cracking is the primary issue with concrete structures, it cannot be prevented; however, cracks must be controlled and repaired.
Environmental Chemistry Letters. (2022) 1-9
Crack formation is a significant flaw in concrete structures.
To extend the service life of concrete structures, cracks must be controlled and repaired [6].
Since cracking is the primary issue with concrete structures, it cannot be prevented; however, cracks must be controlled and repaired.
Environmental Chemistry Letters. (2022) 1-9
Online since: February 2024
Authors: Olusegun Adebayo Ajala, Olayinka Akeem Oladapo, Akintayo Oladimeji Akindele, Adebowale Martins Obalalu
The study of chemical processes is required for anybody interested in pursuing a degree in chemistry and is very essential for working professionals in subjects such as materials science, pharmacology, and environmental science.
Chemical reactions are, in the end, the bedrock of contemporary chemistry and an essential component of the natural world.
Non-Newtonian fluids, such as magnetic fluids, have varying viscosities that depend on the rate of deformation or stress applied due to the presence of particles or internal structures that impact their flow properties.
In summary, magnetic fluids' internal structures due to magnetic particles create a non-linear relationship between shear stress and velocity gradient, which leads to a decrease in the fluid's velocity distribution.
Chemical reactions are, in the end, the bedrock of contemporary chemistry and an essential component of the natural world.
Non-Newtonian fluids, such as magnetic fluids, have varying viscosities that depend on the rate of deformation or stress applied due to the presence of particles or internal structures that impact their flow properties.
In summary, magnetic fluids' internal structures due to magnetic particles create a non-linear relationship between shear stress and velocity gradient, which leads to a decrease in the fluid's velocity distribution.
Online since: December 2012
Authors: Xing Li Sun, Xiao Huang Liu, Jiu Feng Liu, Bai Nian Sun
., Fuyuan, W. and J.H.Yang: The application of zircon cathodoluminescence imaging, Th–U–Pb chemistry and U–Pb ages in interpreting discrete magmatic and high-grade metamorphic events in the North China Craton at the Archean/Proterozoic boundary.
Chinese Journal of Analytical Chemistry.
Gao: Reconstruction of ore controlling structures resulted from the magma intrusion during Yanshanian epoch in Tongling ore cluster area.
Liu:The Structure of Ore Controlling Strain and Stress Fields in the Shangzhuang Gold Deposit in Shandong Province, China.
Chinese Journal of Analytical Chemistry.
Gao: Reconstruction of ore controlling structures resulted from the magma intrusion during Yanshanian epoch in Tongling ore cluster area.
Liu:The Structure of Ore Controlling Strain and Stress Fields in the Shangzhuang Gold Deposit in Shandong Province, China.
Online since: November 2010
Authors: Yue Xin Han, Yong Sheng Sun, Xiao Long Chen, Bin Zhang
The porous structure, huge specific area, mineralogical surface characteristic and the irregularity might be the reason for its positive effect.
All the materials mentioned above have a common essence, namely the large specific area as well as specific mineral structure.
The Na-bentonite has the same crystal structure as the Ca-bentonite.
The difference lies in ions between the layers of the crystal structure.
The reason may lies in the following two aspects: ① The mineral structure and surface chemistry play an important role.
All the materials mentioned above have a common essence, namely the large specific area as well as specific mineral structure.
The Na-bentonite has the same crystal structure as the Ca-bentonite.
The difference lies in ions between the layers of the crystal structure.
The reason may lies in the following two aspects: ① The mineral structure and surface chemistry play an important role.
Online since: October 2016
Authors: Alfred Hucht, Peter Entel, Anjana Talapatra, Raymundo Arroyave, Navdeep Singh, Richard Dronskowski, Dimitri Bogdanovski, Markus E. Gruner
We have performed ab initio electronic structure calculations and Monte Carlo simulations
of magnetically frustrated intermetallic materials where complex magnetic configurations and chemical
disorder lead to rich phase diagrams.
The strong coupling between magnetism and structure leads to a first order magnetostructural transition with different magnetization of austenite and martensite because of different magnetocrystalline anisotropy and different magnetic exchange coupling constants.
In this short communication, we compare the structural and magnetic behavior and magnetocaloric properties of cubic Heusler alloys shown in Fig. 1 with some of the giant magnetocaloric materials known before like Gd5(Si2Ge)2 (monoclinic crystal structure) [17], La(Fe13−xSix) (cubic NaZn13 D23-type structure [18]) and Fe-Rh (cubic CsCl-type structure) [19].
This is also highlighted by the arrows which have been inserted into the figure of the structure.
In principle, the COHP bonding analysis should be supplemented by performing exactly the same type of calculations in order to understand the occurrence of the modulated martensitic structures which have been highlighted in the phase diagram which is shown in in Fig. 1.
The strong coupling between magnetism and structure leads to a first order magnetostructural transition with different magnetization of austenite and martensite because of different magnetocrystalline anisotropy and different magnetic exchange coupling constants.
In this short communication, we compare the structural and magnetic behavior and magnetocaloric properties of cubic Heusler alloys shown in Fig. 1 with some of the giant magnetocaloric materials known before like Gd5(Si2Ge)2 (monoclinic crystal structure) [17], La(Fe13−xSix) (cubic NaZn13 D23-type structure [18]) and Fe-Rh (cubic CsCl-type structure) [19].
This is also highlighted by the arrows which have been inserted into the figure of the structure.
In principle, the COHP bonding analysis should be supplemented by performing exactly the same type of calculations in order to understand the occurrence of the modulated martensitic structures which have been highlighted in the phase diagram which is shown in in Fig. 1.