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A super highly sensitive glucose biosensor based on Ag/PPy nanoparticle-ethyl cellulose hybrid materials Xiang-zhong Ren*, Pei-xin Zhang, Jian-hong Liu, and Qian-ling Zhang School of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, China *renxz409@163.com Keywords: Ag/PPy nanoparticles, Biosensor, Glucose oxidase, Conducting powder Abstract: Ag/polypyrrole(PPy) composite nanoparticles within 100 to 150nm diameter were successfully synthesized.
Among them, PPy has been proven particularly useful in the development of biosensors, because of its easy preparation, high conductivity, good environment stability and good biocompatibility. [7-8] Nevertheless, the morphology, spatial structure and specific surface area have been recognized as the most important factors influencing the catalytic performance of the PPy.
Especially when PPy-metal nanocomposite matrix can provide highly porous structure with large effective surface area, good electronic conductivity and high catalytic activity, which are beneficial to immobilization of enzymes for fabrication of highly sensitive biosensor[9-10].
The discernible peaks can be indexed to (111),(200),(220), and (311) planes of a cubic unit cell, which correspond to those of body centered cubic silver structure(JCPDS card no. 04-0783). 4000 3500 3000 2500 2000 1500 1000 500 20 30 40 50 60 70 Transmitance% Wavenumbers(cm-1) Fig.1 FTIR spectra of Ag/PPy nanoparticle 10 20 30 40 50 60 70 80 0 200 400 600 800 1000 1200 1400 Intensity/cps 2theta/degree (200) (111) (220) (311) Fig.2 XRD pattern of Ag/PPy nanoparticle Fig.3(a) shows SEM images of Ag/PPy nanoparticles.

Two beaker of the mixture, one of which used to characterize the structure of precursor, the other used to analyze thermal decomposition product of the precursor, as well as the preform, were semisealed and then laid in a 50°C oven.
Broad absorption bands of hydroxyl group, Al-O and Si-O indicated their different position in polymer and formation of the network structure consisting Al-O and Si-O.
Sambasivan, Chemistry-properties relations of layered perovskites for ceramic-matrix-composites.
Presented at the 2lst Annual Cocoa Beach Conference and Exposition on Composites, Advanced Ceramics, Materials and Structures, Paper No.C-0169-97F, 12-16 January 1997, Cocoa Beach, FL

Mickiewicza 30, 30-059 Kraków, Poland 5 Institute of Catalysis and Surface Chemistry, PAN, ul.
For instance thin layers and multilayers of iron have exceeding and potentially useful magnetic properties related to their structures [1].
Thus nucleation of small islands resulted in a grainy film structure.
Probably the islands have a round-shaped structure confirmed by STM observations of 20 Å Fe [7].

The peak of 292 nm in UV region is due to the B absorption band which is caused by the benzene structure[13].
When the reaction time was 90 min, the 292 nm absorption peak has disappeared, suggesting that the benzene structure in methylene blue has been destroyed.
The three peaks at 1592 cm-1, 1485 cm-1, 1437 cm-1 is the characteristic absorption peaks of benzene skeleton, 880 cm-1, 824 cm-1 are 1,2,4 - benzene skeleton of vibration absorption peaks, 1384 cm-1 is the absorption peaks of -CH3, 1324.65 cm-1 is the C-H absorption peaks in C=C, 1135 cm-1 and 1167 cm-1 is the C-N bond absorption peaks; 1242 cm-1 is the strtching vibration peak of C=S bond, 1215 cm-1 and 1034 cm-1 are the in-plane bending vibration of the ring structure in methylene blue, 662 cm-1 is outer-plane bending vibration of the C-H[13,14].
Hefei: Hefei university of science and technology, 2007 (in Chinese) [13] Shejuan Shen: Spectral analysis (East China university of science and technology press, China 1992) (in Chinese) [14] Hui Wu, Wei Dang, Chengfang Li: Chemistry & Bioengineering.

Marii Curie-Sklodowskiej 1, 20-031 Lublin, Poland 2Faculty of Chemistry, Maria Curie-Sklodowska University, Pl.
Introduction Positron Annihilation Lifetime Spectroscopy (PALS) allows to obtain information about the porous material structure - the pore sizes in particular [1-4].
This may have resulted from the material structure changes which occurred during the measurements.
There are two possible sources of such distortion: · change of the material structure during heating, which results in the rising of the experimental lifetime at T > 320 K (confirmed by the lifetime obtained at RT after a sample cooling, which significantly exceeds the value observed before the sample heating), · elevated lifetimes at T < 220 K, similar to the ones observed for porous silica (found in many papers but still not explained), e.g. [11,12].

Their usage is prevalent in the manufacture of superalloy gas turbine components where internal structures, such as cooling passages, are desired.
A practical method for forming these internal structures is to cast the metal around a leachable, via chemical means, fused silica ceramic core that has been previously fabricated by injection molding, transfer molding, or rapid prototype printing [2].
Characteristics and chemical composition of powders as provided by manufacturer Fused Silica (SiO2) Titania (TiO2) Trade Name - Degussa Millenium PC 105 Crystalline Structure Amorphous Silica 100% Anatase Particle size 325F - 200F (44 -74 µm) 15 – 25 nm Specific surface area - 85 - 95 m2/g Density 2,20 g/cm3 - Ceramic water based suspensions have been prepared using a polyelectrolyte dispersant.
The examined silica/zircon ceramic, designated as SZ, had a primary chemistry of 80%wt of silica (SiO2) and 20%wt of zircon (ZrSiO4) [4].

This is mainly because soil is typical micro-structured geomaterial [8], and its inner composition and structural properties in micro-level could determine the essential mode of internal thermal transmission, radiation and convection, but most of the existing prediction models are built in terms of the ideal fabric of a certain material or macro parameters, which are not fully applicable to the soil.
Viewing from the existing technical means, the quantitative analysis of soil fabric by using SEM images was a common technique for micro-structured geomaterials, seeing that SEM image could reflect the real fabric of soil to the greatest extent [11].
[2] Gruescu C, Giraud A, Homand F, Kondo D, Do DP: International Journal Solids Structure, Vol.44 (2007), p.811–p.833 [3] Ronald W.
Usowicz: Planetary and Space Science,Vol.56(2008), p.438-p.447 [8] L Cao, WB Liu, XZ Li, XB Zhao, H Zhang: Proceedings of the International Symposium on Geomechanics and Geotechnics: From Micro to Macro, Vol.1 (2010), p.421-p.425 [9] TroschkeB, BurkhardtH: Physics and Chemistry of the Earth, Vol.23 (1998), p.351-p.355 [10] A.

Saadat1 1 Department of Environmental Sciences, Jahangirnagar University, Savar, Dhaka. 2 Radiation & Polymer Chemistry Laboratory, Institute of Nuclear Science and Technology, Bangladesh Atomic Energy Commission, GPO Box: 3787 Dhaka 1000, Bangladesh.
Besides this, with the acrylic monomer treatment, the TS value of the grafted starch/PVA blend film increases(Figure 2) which may be due to the crosslinking of the hydroxyl groups and branched amylopectin in starch with vinyl group forming dimensional network structure causing restricted mobility.
Micrograph analysis is very important to observe the physical structure of the blend film.
The micrographs also reveal that the phase structures in the starch/PVA blend films with different concentrations of starch are very different.

Koidis1, g 1Department of Fixed Prosthesis and Implant Prosthodontics, School of Dentistry, Aristotle University of Thessaloniki 2Chemical Engineering Department, Section of Chemistry, Faculty of Engineering, Aristotle University of Thessaloniki 3 Geology Department, Aristotle University of Thessaloniki 4Solid State Section, Physics Department, Aristotle University of Thessaloniki aantheo@dent.auth.gr, b ktsiopts@auth.gr, c kont@dent.auth.gr, dlambrini@geo.auth.gr, ecpanayio@auth.gr, f kpar@auth.gr, gpkoidis@dent.auth.gr Keywords: chitin, chitosan, scaffolds, biodegradable, degradation, SEM observation Abstract.
SEM microphotographs were used to observe surface morphology and pores structure and analysis of the elemental composition was performed (EDS).
SEM microphotographs of CHS-G-CC after 10 days incubation period with cells Thorough observation of SEM microphotographs of CHN-CCs indicated that although surface remained rough, microporous structure could not be retained in culture medium either with the absence or the presence of HPDLF cells, even at day 1 (Fig. 3a, b, c).
It is supported that the degradation of such scaffolds is based on alteration of the chemical structure of the polymer.

The combustion process is a very complex process of physics and chemistry, due to the characteristics of combustion process owns uncertainty, nonlinearity and feature of time-varying and so on, therefore there exists the following puzzles in the specific control implementation.
They are respectively the uncertainty, high nonlinearity, semi-structured and unstructured, system complexity and the reliability problem.
In order to achieve better control effect, it is necessary to sum up the field experience of engineering and technical personnel as well as the wisdom of operator, and after fusing the knowledge of expert system, the structure of control model is shown as in Fig.2.
Fig.1 Control model of incineration process Fig.2 Structure of fusion control model In the incinerator control system, the system of the highest control demand is the sub-system of exhaust gas and pollution water treatment control.