Materials Literature
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Gold nanoparticles were synthesized by pulsed laser ablation (Q-switched Nd:YAG, ?=1064nm, 10 ns pulse duration and E=750 mJ) of pure Au metal plate immersed in double distilled and deionized water DDDW and other aqueous solution of SDS with various concentrations.Absorbance spectra of the produced nanoparticles solut…
Synthetis of polyaniline has carried out using oxidation polymerization of aniline monomer to oxidant ammonium peroxydisulfat (NH)4S2O8 and H2SO4 as a source of proton doped. Variations in the molarity of H2SO4 conducted to determine of optimum polyaniline on electrical conductivity. Polyaniline samples were character…
The subject matter of this presentation involves a class of resistive based electrochemical gas sensors that includes ruthenium and vandium oxides. In illustrating the potential of this class of metal oxide gas sensors, carbon monoxide and nitric oxide are used as examples. The fabrication of the devices, their synthe…
陈婉玲 a张甜甜 a ( a 福建师范大学化学与材料学院 福建省高分子材料重点实验室 福州 350007)摘要 报道了一种新型 Frétchet 树枝配体取代酞菁锌(II)配合物: 四-{3,5-二-[3,5-二-(4-羧基苯甲氧基)苯甲氧基]-苯甲氧 基}酞菁锌(II)的合成与表征.首先将对氰基苄溴与 3,5-二羟基苯甲醇通过 Frétchet 反应合成 3,5-[二-(4-氰基苯甲氧基)] 苯甲醇(1), 1 与四溴化碳和三苯基膦在四氢呋喃中反应合成 3,5-二-(4-氰基苯甲氧基)苄溴(2), 2 与 3,5-二羟基苯甲醇反应 合成 3,5-二-[3,5-二-(4-氰基苯甲氧基)苯甲氧基]苯甲醇(3), 接着, 3 与 4-…
Abstract Interconnection of crystalline solar cells to modules is a critical step in photovoltaic module production. The typical tabbing and stringing process requires complex handling of delicate solar cells as well as a reliable but gentle joining process. Things become even more complicated as there is a trend to c…
Aroylhydrazones are compounds formed from the condensation of an acylhydrazine and an aldehyde. These compounds exhibit dynamic reversible properties such as isomerization photochemically and thermally activated, hydrazine substitution and coordination to metallic centers. All these together represent systems with mul…
Dwutlenek tytanu, TiO2, wyst puje w trzech odmianach polimor cznych: anataz, brukit i rutyl, i nale y do rodziny tlenkow metali przej ciowych. Surowcem do jego otrzymywania jest wyst puj cy w przyrodzie tytanian elazowy (ilmenit). Przemys owe zainteresowanie dwutlenkiem tytanu pojawi o si na pocz tku XX wieku w zwi zk…
We have developed a life cycle perspective \ninspired conceptual model (CM) that indicates terrestrial ecosystems \nas a major repository for ZnO, TiO2, and Ag manufactured nanomaterials \n(MNMs) introduced via the land application of MNM-containing biosolids. \nIn this project we are investigating the transport, fate…
1 1 Background 3 1.1 The U.S. DOE Interests in Molten Metal as Energy Storage Media 3 1.2 Zinc as a Phase Change Material 7 1.3 General Intermediate Phase Formation in Metallic Systems 8 1.4 Introduction to the Ni-Zn Binary System 10 1.4.1 Equilibrium Phase Diagrams and Previous Work 10 1.4.2 Intermediate Phases of th…
This work is devoted to the construction of a pullback exponential attractor for a viscous Cahn-Hilliard system in bounded domains. Our construction is based on the results obtained by Langa, Miranville and Real in[7].
Mesoporous activated carbon was prepared from willow tree legs (WL) using physiochemical activation (potassium hydroxide treatment and carbon dioxide gasification). Based on the central composite design (CCD), two factor interaction (2 FI) and quadratic models were respectively employed to correlate the activated carb…
Vascular tissue engineering aims to develop implantable blood-vessels, exhibiting biological and biomechanical characteristics close to those of the native vessels. The ultimate goal of our group is to engineer suitable blood vessel substitutes which could be stored for a long time in vascular bank conditions.First at…
Tähän kirjallisuuskatsaukseen on koottu kattavasti tietoa happamien sulfaattimaiden (HS-maat) vaikutuksista vesistöjemme vedenlaatuun, eliöstöön ja kalakuolemiin. Kirjallisuuskatsaus tehtiin Suomen ympäristökeskuksen koordinoiman CATERMASS-hankkeen yhteydessä laajan tutkijaryhmän yhteistyönä. Happamia sulfaattimaita m…
In this study, piezoelectric AC-DC converter using ring-dot type multilayer piezoelectric transformer with no anisotropic of polarization was developed. Considering the characteristics of piezoelectric transformer which is very narrow operating frequency range, piezoelectric converter was designed with mixed structure…
In this paper, we present investigations on the development of a new type of interfaces for silicon heterojunction solar cells, namely silicon oxide buffer layers, leading to the formation of p-doped amorphous silicon/ silicon oxide/ n-doped crystalline silicon structures. First, the new cell concept is evaluated than…
deposition condition and light and dark resistivity...........
Sensitivity-based uncertainty analysis of assembly discontinuity factors (ADFs) can be readily performed using adjoint methods for infinite lattice models. However, there is currently no adjoint-based methodology to obtain uncertainties for ADFs along an interface between a fuel and reflector region. To accommodate le…
The shortage of natural resources, rising energy demands and global warming have created an urgent need for more efficient energy conversion devices and different energy resources to achieve a more sustainable and efficient economy. Solid Oxide Fuel Cells (SOFC) are one of the most promising devices for the direct con…
Vanadium oxide thin films were fabricated by pulsed laser deposition (PLD). The crystal structure and symmetry of the deposited films was studied with X-ray diffraction (XRD) and Raman spectroscopy, respectively. The surface morphology was studied with atomic force microscope (AFM). The thin films consisted mostly of…
As the transformers are one of the expensive equipment of power systems optimum loading is notified by designers, nowadays loading was done base on the IEC and IEEE standards according to the hot spot temperature (HST) as an effective criteria on loading and overloading. To predict HST and TOT, many principal models h…