Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: July 2019
Authors: Ling Wang, Hao Wu, Rui Jun Gao, Yan Yao
Many researchers have underlined the importance of dimensional stability to extend the service life of concrete structures[6,7].
After 28 d, because of the internal curing effect of the SRA, the defects and cracks in concrete structure are reduced, so the later crack resistance of concrete can be improved to a certain extent.
According to the principle of cement chemistry, the hydration products like C-S-H gel, ettringite and calcium hydroxide can be qualitatively analyzed by DSC curves.
After 28 d, because of the internal curing effect of the SRA, the defects and cracks in concrete structure are reduced, so the later crack resistance of concrete can be improved to a certain extent.
According to the principle of cement chemistry, the hydration products like C-S-H gel, ettringite and calcium hydroxide can be qualitatively analyzed by DSC curves.
Online since: June 2020
Authors: Wanrosli Wan Daud, Eti Indarti, Marwan Marwan
At this point, the interaction among the nanofibrils is enhanced resulting in a agglomerate structure.
Kottaisamy, Structure, morphology and thermal characteristics of banana nano fibers obtained by steam explosion, Bioresource Technol. 102 2 (2011) 1988-1997 [3] D.
Rojas, Cellulose Nanocrystals: Chemistry, Self-Assembly, and Applications, Chem.
Kottaisamy, Structure, morphology and thermal characteristics of banana nano fibers obtained by steam explosion, Bioresource Technol. 102 2 (2011) 1988-1997 [3] D.
Rojas, Cellulose Nanocrystals: Chemistry, Self-Assembly, and Applications, Chem.
Online since: June 2016
Authors: Kornkamol Laung-Iem, Prapita Thanarak
This differentiation is necessary because of the dual production structure in Thailand, which means that prices for community biodiesel may be substantially different than more efficient commercial production (Phalakomkule, Petiruksakul, & Puthavithi, 2009 ; Yusuf, Kamarudin, & Yaakub, 2001).
Thus, understanding the pricing structure of biodiesel is only part of understanding the impact of biodiesel introduction on the Thai economy.
London : Royal Society of Chemistry.
Thus, understanding the pricing structure of biodiesel is only part of understanding the impact of biodiesel introduction on the Thai economy.
London : Royal Society of Chemistry.
Online since: December 2023
Authors: Martin Balog, Peter Krížik, Jiří Kubásek, Moara Marques Castro, Peter Švec Jr., Eliška Švastová, Martina Takáčová
Microstructure, Mechanical, and In Vitro Characterization of a Novel Biodegradable Zinc-Based Composite Fabricated at Room Temperature
CASTRO Moara Marques1,a, BALOG Martin1,b, KRÍŽIK Peter1,c, ŠVEC JR Peter2,d, ŠVASTOVÁ Eliška1,3,e, TAKÁČOVÁ Martina3,f, KUBÁSEK Jiří4,g
1Centre of Excellence for advanced materials application, Slovak Academy of Sciences, Dubravska cesta 9, 84511 Bratislava, Slovakia
2Institute of Physics, Slovak Academy of Sciences, Dubravska cesta 9, 84511 Bratislava, Slovakia
3Biomedical Research Center, Institute of Virology, Slovak Academy of Sciences,
Dubravska cesta 9, 84505 Bratislava, Slovakia
4Department of Metals and Corrosion Engineering, University of Chemistry and Technology, Technicka 5, 16628 Prague, Czech Republic
amoara.castro@savba.sk, bmartin.balog@savba.sk, cpeter.krizik@savba.sk, dpeter-svec@savba.sk, eeliska.svastova@savba.sk, fmartina.takacova@savba.sk, gJiri.Kubasek@vscht.cz
Keywords: zinc, biodegradable, extrusion, powder consolidation
In order to access the Zn grain structure and the ZnO morphology and distribution, a foil extracted transversally to the extrusion direction was observed by a FEI/Thermofisher Scientific Titan Themis 300 electron microscope with an EDS system, in scanning transmission mode (STEM).
On the DE Zn-ZnO composite, it was formed a thicker layer of corrosion products (Figs. 4.b-c) with the presence of fibrous structures similar to that reported by Hybasek et al. [8] and apparently formed by adsorbed proteins.
In order to access the Zn grain structure and the ZnO morphology and distribution, a foil extracted transversally to the extrusion direction was observed by a FEI/Thermofisher Scientific Titan Themis 300 electron microscope with an EDS system, in scanning transmission mode (STEM).
On the DE Zn-ZnO composite, it was formed a thicker layer of corrosion products (Figs. 4.b-c) with the presence of fibrous structures similar to that reported by Hybasek et al. [8] and apparently formed by adsorbed proteins.
Online since: July 2025
Authors: Armando Ramalho, Marcelo Gaspar, Carlos Capela, Mário Correia, Joel Vasco, Rui B. Ruben
For this reason, these affordable and relatively lower-price composites are widely used in structures requiring robust mechanical properties in various industries such as automotive, marine, defense, oil, energy, and aerospace.
SRGreenPoxy's 56 molecular structure is almost 51% biobased.
Based on the latest innovations in green chemistry, this resin reduces the carbon footprint without compromising performance.
SRGreenPoxy's 56 molecular structure is almost 51% biobased.
Based on the latest innovations in green chemistry, this resin reduces the carbon footprint without compromising performance.
Online since: April 2018
Authors: Muhammad Firdaus Mohd Nazeri, Nordarina Jumali, Mohd Hafiz Zainol, Ahmad Azmin Mohamad
The Zn-rich phase was distributed as lamellar structure in the β-Sn matrix.
The morphology significantly changed after polarization in 1 M HCl (Fig. 3) where the characteristic broken needle-like Zn structure disappeared for both solders.
Mohamad, Effect of Corrosion in Alkaline Solution to the Microstructure and Mechanical Properties of Cu/Sn-9Zn/Cu, Procedia Chemistry, 19 (2016) 247-252
The morphology significantly changed after polarization in 1 M HCl (Fig. 3) where the characteristic broken needle-like Zn structure disappeared for both solders.
Mohamad, Effect of Corrosion in Alkaline Solution to the Microstructure and Mechanical Properties of Cu/Sn-9Zn/Cu, Procedia Chemistry, 19 (2016) 247-252
Online since: April 2020
Authors: Deni Pranowo, Sabirin Matsjeh, Yuri Pradika
Synthesis of 4-(5-Bromo-4-Hydroxyphenyl-3-Methoxy)-2-Butanone and the Activity Test as Fruit Flies Attractant
Yuri Pradikaa, Deni Pranowob* and Sabirin Matsjehc
Departement of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Jl.
The structure of compound 1 was confirmed by spectral data (FT-IR, GC-MS, and 1H-NMR).
The structure elucidation of compound 3 was performed by FT-IR and GC-MS.
The structure of compound 1 was confirmed by spectral data (FT-IR, GC-MS, and 1H-NMR).
The structure elucidation of compound 3 was performed by FT-IR and GC-MS.
Online since: January 2017
Authors: Wazirotus Sakinah, Suntoyo Suntoyo, Mukhtasor Mukhtasor
Difference in oxygen needs at each fish is caused by the difference in the molecular structure of the blood cells that affect the relationship between the partial pressure of oxygen in the water and the saturation degree of oxygen in blood cells [7].
[2] Zhang, Y., Wu, Z., Lu, M., He, J., Shi, K., Zhou, Y., Wang, M., Liu, X., “Dissolved Oxygen Stratification and Response to Thermal Structure and Long-Term Climate Change in A Large and Deep Subtropical Reservoir (Lake Qiandaohu, China)“,Water Research 75(2015)249-258
[10] Patey, M.D., Rijkenberg, M.J.A., Statham, P.J., Stinchcombe, M.C., Achterberg, E.P., Mowlem, M., “Determination of Nitrate and Phosphate in Seawater at Nanomolar Concentrations”, Trends in Analytical Chemistry 27 (2008) 169-182
[2] Zhang, Y., Wu, Z., Lu, M., He, J., Shi, K., Zhou, Y., Wang, M., Liu, X., “Dissolved Oxygen Stratification and Response to Thermal Structure and Long-Term Climate Change in A Large and Deep Subtropical Reservoir (Lake Qiandaohu, China)“,Water Research 75(2015)249-258
[10] Patey, M.D., Rijkenberg, M.J.A., Statham, P.J., Stinchcombe, M.C., Achterberg, E.P., Mowlem, M., “Determination of Nitrate and Phosphate in Seawater at Nanomolar Concentrations”, Trends in Analytical Chemistry 27 (2008) 169-182
Online since: April 2018
Authors: Ionela Gabriela Bucşe, Elena Adriana Voinea, Oana Gîngu, Petre Rotaru, Nicoleta Cioatera
Morphological and Thermophysical Behavior of Hidroxyapatite Powders Processed by Mechanical Milling
GÎNGU Oana1,a*, BUCȘE Ionela Gabriela1,b, CIOATERA Nicoleta2,c,
VOINEA Elena-Adriana2,d, ROTARU Petre3,e
1University of Craiova, Faculty of Mechanics, Dept of IMST, 1 Calugareni, 220037,
Drobeta-Turnu Severin, Romania
2University of Craiova, Faculty of Sciences, Dept of Chemistry, 107 Calea Bucuresti, 200478, Craiova, Romania
3University of Craiova, Faculty of Mathematics and Natural Sciences, Dept of Physics,
13 A.I.
Vykhodets, T.E.Kurennykh, Effect of mechanical activation on the morphology and structure of hydroxyapatite, Inorg.
[29] Shen TP, Koch CC, McCormick TL, Nemanich RJ, Huang JY, Huang JG., The structure and property characteristics of amorphous/nanocrystalline silicon produced by ball milling.
Vykhodets, T.E.Kurennykh, Effect of mechanical activation on the morphology and structure of hydroxyapatite, Inorg.
[29] Shen TP, Koch CC, McCormick TL, Nemanich RJ, Huang JY, Huang JG., The structure and property characteristics of amorphous/nanocrystalline silicon produced by ball milling.
Online since: April 2021
Authors: Risdiana Risdiana, An-Nissa Kusumadewi, Lisda Damayanti, Rukiah Rukiah
Raya Bandung-Sumedang km 21 Jatinangor, Sumedang, West Java, Indonesia 45363
3Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jl.
There were small pores on the surface of the keeper which was immersed for 14 days in acid solution at pH of 3.8 as shown in Figure 6(c).The keeper is more resistant to corrosion because the surface structure of the keeper is coated with a layer that is rich in chromium [8].
Keepers are more resistant to dissolving metal ions than assemblies due to their chromium-rich keeper structure [8].
There were small pores on the surface of the keeper which was immersed for 14 days in acid solution at pH of 3.8 as shown in Figure 6(c).The keeper is more resistant to corrosion because the surface structure of the keeper is coated with a layer that is rich in chromium [8].
Keepers are more resistant to dissolving metal ions than assemblies due to their chromium-rich keeper structure [8].