Search results

Therefore, in designing electrostatically-actuated MEMS devices, a thorough understanding of the dynamic behavior of the device structure is required such that the pull-in event can be either avoided or induced, as required.
In general, MEMS devices with a circular plate configuration have a better structure flexibility than those with a rectangular plate configuration due to a lack of sharp edges and a lower residual stress after multiple depositions [Vogl and Nayfeh (2005)].
Jónsson, in: Theoretical Methods in Condencsed Phase Chemistry, edited by S.D.
Schwartz, volume 5 of Progress in Theoretical Chemistry and Physics, chapter, 10, Kluwer Academic Publishers (2000)

Introduction Thanks to their high bioactive properties and capacity to allow intimate bone growth within their structure so close to that of mineral bone, calcium phosphate ceramics play an active role in the development of biomaterials.
[6] Elliot, J.C., Structure and chemistry of the apatites and other calcium orthophosphates.
Studies in inorganic chemistry.

Proposed Industrial Scale Setup for Production of ZnO Nanoparticles Using Wet Chemical Synthesis Method MUHAMMAD Saquib Ali1,a, MUHAMMAD Yasir Khan1,b*, ZEESHAN Akhtar2, WASEEM Akhtar3, AHSAN Muhammad4, SHAHID Bhutto1, FAIZAN Umer1, MUHAMMAD Furqan Ali1 and ZEESHAN Abbass5 1Department of Chemical Engineering, University of Karachi, Karachi, Pakistan. 2Department of Applied Chemistry, University of Karachi, Karachi, Pakistan. 3Department of Metallurgy & Material Engineering, Mehran University of Engieering& Technology, Jamshoro, Sindh, Pakistan. 4Veolia, 210 Pentonville Rd, London N1 9JY, UK. 5Department of Physics, University of Karachi, Karachi, Pakistan.
Moreover, simplicity and mild reaction conditions of chemical process gives a well-crystallized structure and alteration in optical and electrical properties of ZnO nanoparticles with controlled amounts of chosen dopants allows them to be used economically in electronic industries.
The XRD patters (Fig. 2a) showed diffraction peaks can be indexed to wurtzite structure of ZnO and the crystalline nature of the NPs with respective JCPDS card no. 36-1451[14].The exhibited crystalline patterns resulted into average particle size of 100 nm as calculated by Debye-Scherrer equation [15].
Jiang, J.Pi, J.Cai, The Advancing of Zinc Oxide Nanoparticles for Biomedical pplications, Bioinorganic chemistry and applications 1062562 (2018) 1-18

The surfactant can be used in simulating membrane structure, technology of synthesizing LB membrane, and as media or controlling the release for dye, quantum dot and drug etc., as well as relative fields.
Hence, the azobenzene moiety not only provides a mechanism by which the structure of these complexes in solution can be probed, but also may give rise to stimuli responsive materials [13].
Bolaform amphiphile systems have attracted great attention ranging from fundamental areas in biochemistry and physical chemistry to many applicable aspects, such as pharmacology, catalysis, microreactor and cosmetics [14].
[13] Sakai Hideki, Matsumura Atsutoshi, Yokoyama Shoko et al., Journal of Physical Chemistry B, 103(49): 10737-10740 (1999)

Introduction Cement-based composites are widely used building materials, which is mainly due to their high compressive strength and the practicality of their utilization in a wide range of structures and production technologies.
The individual components for the first and the second campaign were mixed under laboratory conditions at the Institute of Chemistry (CHE), Faculty of Civil Engineering, Brno University of Technology (FCE BUT) under the supervision of Associate Professor Pavel Rovnaník using a hand-held paddle mixer.
In Proceedings of the 8th International Congress on the Chemistry of Cement, III, 1986, pp. 466–471
Materials and Structures, Vol. 18, Issue 4 (1985) pp. 285–290

., Bangmod, Tungkru, Bangkok 10140, Thailand. 2 Centre of Excellence on Energy Technology and Environment, Science and Technology Postgraduate Education and Research Development Office, Bangkok Thailand 3 Laboratory of Advanced Catalysis for Sustainability, School of Chemistry, the University of Sydney, Sydney 2006, Australia a jiraporn.p330@gmail.com, b* xiaobo.li@sydney.edu.au, c thomas.maschmeyer@sydney.edu.au, d navadol_l@jgsee.kmutt.ac.th, e* surawut.chu@kmutt.ac.th Keywords: Graphitic carbon nitride, Photocatalytic oxidation, Benzyl alcohol, pH, Potassium salt Abstract.
One of attractive metal-free photocatalysts in catalysis fields is graphitic carbon nitride (g-C3N4) that mainly composes of carbon and nitrogen in the polymeric structure. g-C3N4 has been fabricated by the pyrolysis of cyanamide, dicyandiamide, or melamine to form melem units [3].
The decrease of photocatalytic oxidation efficiency under strong base condition may be explained by the effect of charges repulsion between both negative charge of oxygen atom in deprotonated BzOH and the g-C3N4 structure.
The authors also wish to express their thanks to Laboratory of Advanced Catalysis for Sustainability, School of Chemistry, the University of Sydney, Australia for providing chemicals and, analytical instruments.

�epa 3 1 Institute of Physics of Materials AS CR, Žižkova 22, CZ-61662 Brno, Czech Republic, 2 Institute of Inorganic Chemistry AS CR, CZ-250 68 �ež, Czech Republic, 3 Department of Electronics and Vacuum Physics, Faculty of Mathematics and Physics, Charles University, V Holešovi�kách 2, 180 00 Praha 8, Czech Republic Keywords: nanocrystalline materials, composite, MgO, Ni-Fe alloy, spark erosion Abstract.
It can be explained as a result of miscibility of MgO-NiO and MgO-FeO over the entire molar fraction range because of their very similar structures [19,20].
Similarly, desorption of structure-bonded water and other gases can explain the step/peak at 380o C.
Lide (ed.): CRC Handbook of Chemistry and Physics (80 th Edition, CRC Press, Boca Raton, 1999) p.12-119

College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai, 201620, P.R.China. 2.
Adsorption of dyes is mainly dependent on the features and structure of dyes and to an equal extent on the surface chemistry of adsorbents [5].The effects of temperature was studied in batch adsorption system.
FT-IR spectra of β-CDP(a),β-CD(b) 3.1.2 SEM analysis Typical cross-sectional areas of the membranes, which exist a porous structure, were viewed using SEM shown in Fig.2.The β-cyclodextrin/chitosan membranes displayed a more extensive three-dimensional network compared to the smooth surface of chitosan, and immobilized organic molecules, when grafted β-CDP with vinyltriethoxysilane, seems to provoke electrostatic repulsions in the inner part of the membranes, which contribute to create large pores and increase the adsorbent-adsorbate interactions, leading to a higher degree of adsorption of the membranes[7,10].

Development of Powders for Selective Laser Sintering BĂILĂ Diana Irinel1, a *, DOICIN Cristian Vasile1, b, MOCIOIU Oana Cătălina2, c 1 Faculty IMST, University POLITEHNICA of Bucharest, 313 Splaiul Independentei, district 6, Bucharest, Romania 2 “Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, 202 Splaiul Independentei, district 6, Bucharest, Romania abaila_d@yahoo.com , bcristian.doicin@cont-edu.pub.ro , comocioiu@icf.ro Keywords: SLS process, bionanopowders, granulometry of powders, microsurgery instruments, implants, spectrometry Abstract.
Selective Laser Sintering Process Selective laser sintering (SLS) is an additive manufacturing technique that uses a laser as the power source to sinter powdered material (typically metal), aiming the laser automatically at points in space defined by a 3D model, binding the material together to create a solid structure.
The structure of materials was investigated by FT-IR Spectroscopy with a Nicolet 6700 apparatus in 400-4000 cm-1 domain; with sensibility of 4 cm-1.
Pogany, Applications of the physical methods in organic chemistry, ESE, Bucharest, (1983) 13-38; [6] M.

FEATURES OF POLLUTION BY HEAVY METALS OF SOILS OF TAGANROG CITY Korikova Nadezda1,a, Gusakova Natalia2,b, Kovalenko Dmitry3,c 1-3 Russia, Taganrog, Nekrasovsky,44, Department of Chemistry and Ecology a nadinkkka@inbox.ru b gnv2007@yandex.ru c kovalenko.mitya@yandex.ru Keywords: soil analyze, stripping voltammetry, heavy metals Abstract.
Mechanical structure of chernozems is lightly- and heavy-loam, lightly-clay with prevalence of slit and particles of loess.
Identification of fractional structure of compounds of HM in the soil will be the interesting direction of further probes of city soils of Taganrog.
Opportunity to predict the share of HM capable to migration, at a certain type of the soil, at the maintenance of a humus, at clay minerals and concentration of HM in soils is the direction of further researches of chair of chemistry and ecology of SFEDU.