Search results

Evaluations of Hydrogen Permeation on Al2O3-CuO-ZnO-based Cobalt Composite Membrane Jihee Park1,a , Tae-Whan Hong2,b and Miewon Jung1,c 1 Department of Chemistry/Institute of Basic Science, Sungshin Women's University, 136-742 Seoul, Korea 2 Department of Materials Science and Engineering/Research Center for Sustainable Eco-Devices and Materials(ReSEM), Chungju National University, 380-702 Chungju, Korea a chung520@sungshin.ac.kr, b twhong@cjnu.ac.kr, cmwjung@sungshin.ac.kr Keywords: Al2O3-CuO-ZnO, Sol-gel process, Hot press sintering, Hydrogen permeation Abstract.
These broad peaks were transformed to α-Al2O3 with very sharp and strong peaks to the formation of a poly-crystallite structure such as CuAl2O and/or ZnAl2O4 at 1373K.

Rajbhandari (Nyachhyon)1a, A.P.Yadav 2b, K.Manandhar3c, R.R.Pradhananga4d 1,2,3,4 Central Department of Chemistry, Tribhuvan University, Kirtipur, Kathmandu, Nepal a armila3@yahoo.com,b amar2y@yahoo.com, cKrishna.manandhar@yahoo.com, dpradhananga.rajaram@yahoo.com Keywords: Indicator Electrode, Iodide Sensor, Nernstian Response, Selectivity Coefficient, Arsenic.
Results and Discussion Characterization of Ag2S-AgI material The crystal structure of laboratory prepared Ag2S-AgI co-precipitate was identified by XRD technique and the diffraction pattern is shown in Fig.1.

Study of Processing and Properties of a few Hemp Linter Fiber Reinforced Polylactic Acids Composite Materials Jiashuang Luan 1, a, Mei Zhang1,b , Fugui Zhou2, Yang Wang2, Gang Ma2, Xiujie Li2, Guibin Wang2,c * 1College of Quartermaster Technology, Jilin University, Changchun 130062, People’s Republic of China. 2 Alan G MacDiarmid Laboratory, College of Chemistry, Jilin University, Changchun 130012, People’s Republic of China.
The effect of PEGs with different molecular weights and chain end groups on the miscibility, crystallization, structure, and mechanical behavior of amorphous and semicrystalline PLAs has been analyzed[11].

Introduction One of the limitations in SiC epitaxial growth technology is the low growth rates observed using standard process chemistries, such as silane and propane transported to the growth surface via a hydrogen carrier gas.
The mosaic structure and rough morphology could have been caused by larger particles impinging on the surface.

Swelling could cause a conformational change in the microstructure of film and open up the polymer structure to allow an increase in permeant flux [27]. 0 5 10 15 20 25 30 35 40 45 50 0 50 100 150 200 250 Pressure (mTorr) Absorption time (min) Untreated 25W 50W 75W Untreated 0 10 20 30 40 50 60 70 80 90 100 0 50 100 150 200 250 Pressure (mTorr) Contact angle (°) Untreated 25 W 50 W 75 W Untreated Figure 1 a) Absorption time and b) water contact angle of methylcellulose film at different powers (Watt) and pressures (mTorr) with 1 minute of treatment time. 0 10 20 30 40 50 60 70 0 50 100 150 200 250 300 350 Treatment time (sec) Absorption time (min) 0 10 20 30 40 50 60 70 80 90 100 0 50 100 150 200 250 300 350 Treatment time (second) Contact angle (°) Figure 2 a) Absorption time and b) water contact angle of methylcellulose film at different treatment times.
Irani: Radiation Physics and Chemistry Vol. 77 (2008), p. 280

Müller 1,e 1 German Aerospace Center (DLR), Institute of Materials Research, D-51170 Köln, Germany 2 Physics Technology - Development and Consulting (PANCO), D-56218 Mülheim-Kärlich, Germany 3 University of Pardubice, Faculty of Inorganic Chemistry, CZ-53210 Pardubice, Czech Republic a dieter.platzek@dlr.de, binfo@panco.de, cgabriele.karpinski@dlr.de, dcestmir.drasar@upce.cz, e eckhard.mueller@dlr.de Keywords: Thermoelectric.
With those detailed information on the shape and structure of obtained functional gradients the preparation process of FGM materials can be improved.

Introduction Internal olefin sulfonates (IOS) are enhanced oil recovery (EOR) surfactants, especially for difficult oils[1], because the position of hydrophilic sulfonate and hydroxyl groups in the middle gives the molecule an approximate branching structure, which tends to minimize undesirable behavior such as gels and liquid crystals.
Karsa, Royal Society of Chemistry, London(1986)

Due to the non-ionizability of the PP membrane, its structure has no response to pH, which results in a constant flux.
[3] J.Hendri, A.Hiroki and Y.Maekawa:Radiation Physics and Chemistry,Vol.60 (2001),p. 617-624

Preparation, characterization and photocatalytic properties of flower like Bi2WO6 under solar light irradiation Jianhui Suna, Jinglan Fengb, Xiaoke Tianc, and Shuying Dongd Henan Key Laboratory for Environmental Pollution Control, College of Chemistry and Environmental Sciences, Henan Normal University, Xinxiang, Henan 453007, P.R.
It can be seen from Fig. 1 that the detected XRD peaks are characteristic of Bi2WO6 with russellite structure and no peak from either Bi2WO6 in other phases or impurities appears in the XRD patterns (JCPDS 79-2381).

Advenella kashmirensis, Achromobacter xylosoxidans and Alcaligenes xylosoxidans subsp. xylosoxidans were responsible for breaking ring structures, Acinetobacter venetianus was responsible for the degradation of alkanes.
Isolation and identification of high efficient petroleum degrading bacteria .Chemistry & Bioengineering,26(7)