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Online since: December 2011
Authors: Yue Hua Wang, Tao Xu
mature fruit seeds, fruit and seed structure were collected for observation, weighing, taking photos by Olmpus BH-5, and disinfection by using 400 mg/L chlorine.The seeds were divided into 2 parts of them, one of them directly were sowed in sandy soil and covered with plastic film for insulation.
From the appearance of the seed structure, the embryo has been matured.it means that the dormancy is not because of the immature seed, generally, we can germinate the seeds as soon as we pick them off.
Forestry Chemistry and Industry, 1994, 14 (3), p.15-20
Online since: December 2011
Authors: Hao Liang Han, Bo Cui, Derek Elsworth
Gas flow in coal pores occurs as a result of both pressure and concentration gradients and, the pore structure of coal, mainly the matrix pore and the fracture network (cleat system), controls the gas transport in coal-beds[6-8].
Fig.1 Schematic of bidisperse coal pore structure showing macro- and micropores containing gas in free and adsorbed[4]. 1.1 Mechanical equations for dual-porosity model Mechanical equilibrium of the solid phase is governed by the balance of linear momentum (1) The relationship between strain and displacement can be expressed as (2) For the physical process of gas flow in coal seam, taking gas sorption or desorption induced strain into account, we get Navier type equation[10] (3) For the dual-porosity model, if we use the cubic model consisting of several cubes put together, to represent coal(See Fig.2), the mechanical properties of coal are affected by the fracture.
,chemistry may also important factors which affect the permeability and should not be ignored in the future work.
Online since: March 2006
Authors: Koichiro Tsujimaru, Masakazu Anpo
Titanium Oxide-based Photocatalysts: -From fundamentals to practical applications- Koichiro Tsujimaru and Masakazu Anpo* Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka 599-8531, Japan E-mail: anpo@chem.osakafu-u.ac.jp Keywords: photocatalysis; TiO2; visible light response; ion-beam technique.
No such V ions having the same local structure or shifts in the absorption band could be observed with TiO2 catalysts chemically doped with V ions.
These findings for the V-O-Ti bridge structures in the V ion-implanted Ti/HMS and also in Ti/MCM-41 catalysts support the results of the red shift in the absorption spectra for these catalysts.
Online since: July 2012
Authors: Ming Song Zhou, Lin Huo Gan, Xue Qing Qiu
Preparation of Water-soluble Carboxymethylated Lignin from Wheat Straw Alkali Lignin Linhuo Gan1, 2, 3, a, Mingsong Zhou1, 2, b, Xueqing Qiu1, 2, c 1School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China 2Guangdong Provincial Laboratory of Green Chemical Technology, South China University of Technology, Guangzhou 510640, China 3College of Chemical Engineering, Huaqiao University, Xiamen 361021, China alhgan401@126.com, bmszhou@scut.edu.cn, cxueqingqiu66@163.com Keywords: Wheat straw alkali lignin; Carboxymethyl; Modification; Solubility; Surface tension Abstract.
The former two signals may be attributed to the protons of methylene groups of carboxymethyl groups (–CH2COO-) in CML structure.
Sun: Identification of Spectra of Organic Molecular Structure (Science Press, China 2003).
Online since: June 2012
Authors: Shui Jin Yang, Yong Kui Huang, Yun Zhi Wang, Ming Bo Xu, Li Yu, Guo Bin Duan
Catalytic Application of H3PW6Mo6O40/SiO2 in Synthesis of Acetals and Ketals YongKui Huang1,a, Li Yu1,b, GuoBin Duan1,c, YunZhi Wang1,d, MingBo Xu1,e and ShuiJin Yang1,f* 1College of Chemistry and Environmental Engineering, Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, Hubei Normal University, Huangshi 435002, China axiaohuang2118@163.com, byulisunshine@163.com, cduangb1987@126.com, d785014803@qq.com, e7244632@qq.com, fyangshuijin@163.com Keywords: H3PW6Mo6O40; SiO2; acetal; ketal; catalysis Abstract.
SiO2 has been reported to be as an efficient support because it exhibits higher surface area, anomalously high stability, chemical inertness, controlled porosity, and well disperses POMs while retaining the structure.
The basic structure of the products have been characterised by FT-IR, and the results are in good agreement with previous studies[10].
Online since: December 2011
Authors: Minoru Hanaya, Tôru Kyômen, Ryuta Motani
Effect of B2O3 or SiO2 Fluxes on Morphology and Size of Pr-doped CaTiO3 Phosphor Particles And on Their Photoluminescence Properties Tôru Kyômen1,2, Ryuta Motani1, and Minoru Hanaya1,2 1 Department of Chemistry and Chemical Biology, Graduate School of Engineering, Gunma University, Tenjin-cho 1-5-1, Kiryu, 376-8515, Japan 2 International Education and Research Center for Silicon Science, Graduate School of Engineering, Gunma University, Tenjin-cho 1-5-1, Kiryu, 376-8515, Japan 1 E-mail address:tkyomen@gunma-u.ac.jp Keywords: Calcium Titanate; Praseodymium; Phosphor; Flux; Photoluminescence Abstract.
Such a surface structure was not observed in no flux sample.
Therefore, it is considered that this flux effect is connected not with the particle size but with the surface structure modified by addition of the fluxes.
Online since: September 2013
Authors: Hua Wu, Wen Ge Ji, Jing Shen, Mei Feng Wang
The following figure shows the structure of the print system Fig.1 The structure of the print system The print system mainly consists of six parts: multi-core processors, memory, system bus, nozzle control MCU and hard disk. 1.
Image analysis and estimation of porosity and permeability of Arnager Greensand, Upper Cretaceous, Denmark, Physics and Chemistry of the Earth, Part A: Solid Earth and Geodesy, 1999, vol. 24, no. 7, pp. 587-591
Online since: June 2014
Authors: Codruta Sarosi, Cristina Prejmerean, Marioara Moldovan, Aurora Antoniac, Ovidiu Cristian Pastrav, Dan Patroi, George Popescu
Hydrolytic degradation of dental composites Codruta Sarosi1,a, Aurora Antoniac2,b, Cristina Prejmerean1,c, Ovidiu Pastrav3,d, Dan Patroi4,e, George Popescu5,f and Marioara Moldovan1,b 1Babes Bolyai University - Raluca Ripan Chemistry Research Institute, Cluj-Napoca, Romania 2University Politehnica of Bucharest, Romania 3Faculty of Dental Medicine, “Iuliu Haţieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania 4Faculty of Dental Medicine,“Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania 5Technical University of Cluj-Npoca, Romania acodruta.sarosi@gmail.com Keywords: composites, hydrolytic degradation, FTIR spectroscopy, artificial saliva Abstract.
In the analysis of polymer hydration is important to take into account that the polymeric matrix containing carbon atoms bound in three different structures: the conversion of double bonds and the formation of a crosslinked network; C=C bond unreacted (residual monomer) and C=C bond unreacted attached to the crosslinking network (unreacted); water strong effect is found mainly in the last two cases [2].
Furtos, L.Vezsenyi, D.Prodan, V.Simon, Structure and properties of inorganic fillers for dental composites, Journal of Optoelectronics and Advanced Materials, 6 (2005), 2849-2852 [5] K.
Online since: August 2014
Authors: Husin Wagiran, M.A. Saeed, Azadeh Refaei
TLD-100 with structure of ~92.14% 7LiF and ~7.3 % 6LiF included ~10 ppm Titanium and ~ 200 ppm Magnesium, is usually considered as a standard TL dosimeter.
Annealing is a thermal treatment which is applied to remove any irradiation memory from the TL material and make the trap structure stable.
Radiation Physics and Chemistry 91, 98-100 (2013)
Online since: December 2010
Authors: Luis Alonso, Benito Lauret, Fernando Alonso
Dimensions: Fig. 4 F2TE3 system axonometry The panel sizes will be 60 x 60 cm (length/width), and panel thickness will depend on whether the structure is self-supporting or a simple envelope.
Fig. 5 F2TE3 compared with monolithic aerogel Conclusions The F2TE3 is a slim façade system that provides high energy efficiency, with a seamless surface, providing for variable geometry and the option of building self-supporting structures into the same transparent system skin.
Sastre: Organo-modified silica Aerogels and implications for material hydrophobicity and mechanical properties, Journal of Materials Chemistry, Vol.18 (2008), pp. 207-213