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Online since: July 2013
Authors: Lie Wu Liu, Huan Bing Song
Dominant industry is the main power source of regional economy development and the leading role promoting regional economic structure evolution[7].A city's development and prosperity is go hand in hand with the dominant industry.
Thus, according to the formation of dominant industries, mining cities economic transition mode can be unified into the following three: Inheritance industry extension modes Inheritance industry extension modes is a model which city industry following the rule in the process of industrialization structure evolution, along the traditional mining of mineral resources industry chain to the depth extension, forming minerals deep processing industry, machinery manufacturing, assembly industry.
The essence of this kind of mode is the optimization and upgrading of industries, namely the production of primary products raw materials industry proportion drops, proportion of manufacturing intermediate products, final products industrial rises and gradually occupy the main position, so as to cause the high scale of industrial structure.
Inner Mongolia building materials,chemistry, metallurgy, energy and such industry bigger and stronger, make the industry in the national economy play a pillar role.
Online since: June 2018
Authors: Jitka Hroudová, Jiří Zach, Vítězslav Novák
Fibers and chemistry were then added and the mixture was homogenized for 10 minutes.
LO1408 "AdMaS UP - Advanced Materials, Structures and Technologies", supported by Ministry of Education, Youth and Sports under the „National Sustainability Programme I".
Diop, Sorption de l’eau et structure des pores de matériaux composites ciment-bois (Water sorptivity and pore structure of wood–cementitious composites), Magazine of Concrete Research 54 (2002) 103-112
Online since: January 2020
Authors: E.A. Ryzhkova, D.V. Dmitrieva, Elvira B. Kolmachikhina
Cathode zinc obtained at SDS addition had similar structure.
But surfactants concentration increasing lead to changing of structure, residue became smooth, without deep pores and defects that can be connected with hydrogen overvoltage increasing due to SDS adsorption on cathode (Table 2).
Analysis results of cathode zinc structure obtained at usage of Ls and SDS mixtures Surfactant concentration, mg∙l-1 Average pore size, pixel Pore fraction, % 200Ls – 200 SDS 41.2 28.50 200 Ls – 400 SDS 85.6 18.42 400 Ls – 400 SDS 40.6 10.13 400 Ls – 800 SDS 13.9 4.68 800 Ls – 200 SDS 13.2 3.45 800 Ls – 800 SDS 12.8 2.54 Summing up what has been said, in this work optimal mixtures composition of Ls and SDS was established which allow to attain high rates for oxidative pressure leaching of zinc concentrate.
Nabojchenko, Physical and chemical properties of aqueous solutions of binary mixtures of lignin derivatives and sodium dodecylsulfate, Journal of Applied Chemistry. 1 (2018) 90-97
Online since: March 2013
Authors: Wantanee Buggakupta, Withaya Panpa, Pinsiri Umponpanarat, Kanyakarn Tounchuen
The needle-liked particles were ettringite covering the laminated structure of gypsum dihydrate crystals.
The porous structure of binder B to H was formed in the early stage and the matrix of gypsum was later filled up by the hydration products (ettringite and CSH) [17].
So, the structure became denser, attributing to higher strength [9].
Panpa, Preparation of gypsum building materials baed on flue-gas gypsum, ladle furnace slag and rooftile sludge, Pure and Applied Chemistry International Conference 2012 Proceedings (PACCON 2012), (publication ongoing)
Online since: September 2020
Authors: Hasmaliza Mohamad, Sharifah Aishah Syed Salim, Siti Noor Fazliah Mohd Noor
Fig. 5: SEM images and EDX distribution of 50S8P glass aged for 3 and 15 days at 25 °C after incubation in HBSS solution for for 7, 14, and 21 days Summary The synthesis of 50S8P bioactive glass was successfully prepared by sol–gel method, the effect of aging time on the structure of gel-derived 50S8P glass and in-vitro bioactivity test with HBSS were investigated.
Letaief et al., “Effect of aging temperature on the structure, pore morphology and bioactivity of new sol-gel synthesized bioglass,” J.
Scherer, Sol-gel science: the physics and chemistry of sol-gel processing.
Zheng et al., “Aging time and temperature effects on the structure and bioactivity of gel-derived 45S5 glass-ceramics,” J.
Online since: July 2017
Authors: Syardah U. Adawiyah, Endang Tri Wahyuni, Adhitasari Suratman
Adawiyah, Adhitasari Suratman*, Endang Tri Wahyuni Departement of Chemistry Universitas Gadjah Mada Yogyakarta Indonesia 55281 *Corresponding author: adhitasari@ugm.ac.id Keywords: zeolite, alginate, separation, CO2, CH4 Abstract.
Zeolite minerals, also known as natural sedimentary or natural occurring zeolites, are mainly composed of aluminosilicates with a three-dimensional framework structure bearing AlO4 and SiO4 tetrahedral.
Zeolite pore structure makes zeolites are often used as a tool for separating a smaller or larger substance from other substances.
In use as a separator, the zeolite is often synthesized then modified structure that can filter and separate the molecules of substances [10].
Online since: February 2024
Authors: Mochamad Chalid, Sotya Astutiningsih, Wiwiek Utami Dewi, Rizky Sutrisna, Heru Supriyatno
Curing kinetics helps engineers to have a better understanding of the relationship between the structure-property-processing of the epoxy [1], to predict the cure cycle and to control the final properties of the material [2] [3], moreover, to optimize industrial production [4].
Results & Discussion Parameters of curing kinetics related to forming cross-links in epoxy molecules can provide crucial information regarding product structure, product characteristics, and suitable processing methods.
It gradually becomes slow and limited because a three-dimensional cross-linked structure is already formed.
Sideridou, Cure kinetics study of two epoxy systems with Fourier Transform Infrared Spectroscopy (FTIR) and Differential Scanning Calorimetry (DSC), Journal of Macromolecular Science, Part A: Pure and Applied Chemistry. 49(8) (2012) 630–638
Online since: July 2016
Authors: Catalin Fetecau, Ionut Laurentiu Sandu, Razvan Rosculet
The electrical behavior of annealed nanocomposites can be explained by the fact that the annealing process may involve structure re-crystallization and/or reorientation of carbon nanotubes.
Galiotis, Carbon nanotube–polymer composites: Chemistry, processing, mechanical and electrical properties, Prog.
Saito, Relationship between modulus and structure of annealed thermoplastic polyurethane, Mater.
Yang, Yong Wang, Zuo-wan Zhou, Ji-hong Zhang, Carbon nanotube network structure induced strain sensitivity and shape memory behavior changes of thermoplastic polyurethane, Mater.
Online since: May 2012
Authors: Andrzej Deptula, Tadeusz Olczak, Danuta Wawszczak, Marcin Brykala, Magdalena Milkowska, Wieslawa Lada, Tomasz Smolinski, Andrzej G. Chmielewski, Fabio Zaza, Kenneth C. Goretta
Goretta3 1Institute of Nuclear Chemistry and Technology (INCT), 03-195 Warsaw, Poland 2Italian National Agency for New Technologies, Energy and Environment (ENEA), CR Casaccia, Rome, Italy 3Asian Office of Aerospace Research and Development, Tokyo 106-0032, Japan at.smolinski@ichtj.waw.pl, Keywords: Nuclear Waste, Silica Glass, Sol-gel, Thermal Treatment Abstract.
In this work, our patented complex sol-gel process (CSGP) [7-9] has been used to synthesize silica glasses capable of incorporating into their structures significant concentrations of high-level nuclear wastes.
In forms for which the dopants were more strongly bonded, the structure of silica matrix was also more resistant leaching.
XRD patterns indicated that all studied elements were, for all temperatures of heat treatment, integrally bonded in the silicate glass structures.
Online since: April 2019
Authors: Yamina Chergui, Hafida Hentit, Abdelkader Iddou, Jean Claude Jumas, Abdallah Aziz
The morphological structures of G2W, G2WZnC and G2WZnM were characterized by SEM and are shown in Fig. 2.
In contrast, more net-like structure was formed on the material G2WZnM, which allows increase of surface efficiency.
It is confirmed by the spectra that the microwaves do not destroy the structure.
Martin, Treatment of pollutants in wastewater: Adsorption of methylene blue onto olive-based activated carbon, Journal of Industrial and Engineering Chemistry. 18 (2012) 780-784