Water by EPMA- New Developments
Extended abstract of a paper presented at Microscopy and Microanalysis 2008 in Albuquerque, New Mexico, USA, August 3 – August 7, 2008
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Diatoms in a peatbog polluted with oil-field brines in the Kolva River basin, Komi Republic
The first data about the diatoms of phytobenthos and epiphyton in water biotopes of a peatbog in the Kolva River basin (a tributary of the Pechora River) polluted by oil-field brines are reported. As a total, 49 species with varieties and forms from 14 genera and 9 families have been found. Dominating complexes of com…
Analysis of MHD Pressure Drop in Liquid LiPb Flow in Chinese ITER DFLL-TBM with Insulating Coating
Magnetohydrodynamic (MHD) pressure drop in the Chinese Dual Functional Liquid Lithium-lead Test Blanket Module (DFLL-TBM) proposed for ITER is discussed in this paper. Electrical insulation between the coolant channel surfaces and the liquid metal is required to reduce the MHD pressure drop to a manageable level. Insu…
Anodization of cast aluminium alloys produced by different casting methods
In this paper the usability of two casting methods, of sand and high pressure cast for the anodization of AlSi12 and AlSi9Cu3 aluminium cast alloys was investigated. With defined anodization parameters like electrolyte composition and temperature, current type and value a anodic alumina surface layer was produced. The…
Chemical Resistant Improvement of Natural Rubber and Nitrile Gloves by Coating with Hydrophobic Film
In this paper, we report innovative gloves that are coated with hydrophobic film such that the outer surface of the gloves is hydrophobic. A coating precursor containing polymethyl hydrogensiloxane, silica nanoparticle, semifluorinated silane and Pt-catalyst was painted onto the gloves. The coated gloves were kept at…
Oxygen/Carbon Ratio Effects on Surface-Modified Carbon Nanotubes
Carbon nanotubes (CNTs) were functionalized using a simple method of heat treatment under oxygen atmosphere followed by an immersion in a tin nitrate aqueous solution. And well-dispersed SnOx nanodots were decorated on the surface of CNTs. X-ray photoelectron spectroscopy (XPS) analysis showed that the O/C ratio incre…
Composición y dinámica del fitoplancton en un lago urbano hipertrófico
Se presenta la composición y dinámica anual del fitoplancton del somero e hipertrófico Lago Tezozomoc, D.F. Se realizaron muestreos mensuales de superficie en la zona litoral y limnética del lago, durante septiembre de 2003 a agosto de 2004. Se midieron temperatura, pH, oxígeno disuelto, conductividad (K25), clorofila…
Brush Type Copolymers of Poly(3‐hydroxybutyrate) and Poly(3‐hydroxyoctanoate) with Same Vinyl Monomers via “Grafting From” Technique by Using Atom Transfer Radical Polymerization Method
Abstract Brush type graft copolymers of poly(3‐hydroxybutyrate) (PHB) and poly(3‐hydroxyoctanoate) (PHO) with methylmethacrylate, (MMA), styrene, (S), and n‐butylmethacrylate, (n‐BuMA) were obtained by using Atom Transfer Radical Polymerization Method, (ATRP), via “grafting from” technique. Firstly PHB and PHO were ch…
PORE SPACE AND SPECIFIC SURFACE AREA OF HEAVY CLAY OXISOLS AS AFFECTED BY THEIR MINERALOGY AND ORGANIC MATTER
Pores and specific surface area (SSA) play a major role in controlling transport systems and potential reactivity of soils, but they have received little attention for heavy clay Oxisols. The objectives of this study were: (i) to study the pore sizes and SSA of heavy clay Oxisols as affected by their mineralogy and so…
Pressure Vessels With Reinforcing Space-Filling Skeletons
Light-weight high pressure vessels are recently in demand mainly because of the need to replace gasoline engines with hydrogen fuel cells. One of the main problems delaying this transition is our inability to store sufficient hydrogen in automobiles without (1) sacrificing safety and cabin space and (2) achieving the…
Nucleation energetics during homogeneous solidification in elemental metallic liquids
The solidification of a liquid by nucleation is an important first order phase transition process. It is known that in order for elemental liquids to solidify homogeneously, it is necessary to supercool the liquid to a characteristic temperature (TUC) below the thermodynamic melting point (TMP). Approximately 60 years…
Mechanical behavior of ultrafine-grained titanium rods obtained using severe plastic deformation
We present the results of the investigation of the mechanical behavior of ultrafine-grained (UFG) titanium rods—semifinished products obtained by equal-channel angular (ECA) pressing in combination with subsequent thermomechanical treatment. This material shows ultimately high values of strength (1240 MPa) and plastic…
Lymphatic targeting of immuno-PEG-liposomes: Evaluation of antibody-coupling procedures on lymph node macrophage uptake
Interstitially injected immuno-poly(ethyleneglycol)-liposomes (immuno-PEG-liposomes) can penetrate the thin-walled and fenestrated lymphatic microvessels and are subsequently conveyed to the regional lymph nodes. The exposed Fc region of coupled antibodies on the liposome surface facilitates vesicular recognition and…
An ultracapacitor model derived using time-dependent current profiles
A linear model of an ultracapacitor cell has been determined using time-domain identification techniques. A third-order transfer function consistent in form with an RC ladder circuit model is assumed. The transfer function coefficients are identified from experimental data consisting of time-varying current excitation…
Object-defined Resolution Below 0.5Å in Transmission Electron Microscopy - Recent Advances on the TEAM 0.5 Instrument
Extended abstract of a paper presented at Microscopy and Microanalysis 2008 in Albuquerque, New Mexico, USA, August 3 – August 7, 2008
Production of High-Density Uranium Carbide Compacts for Use in Composite Nuclear Fuels
Composite nuclear fuel consisting of uranium carbide (UC) fuel microspheres dispersed in an inert matrix is one of the fuel forms being actively considered for use in gas-cooled fast reactors (GFRs). High-density UC electrodes were required for the production of fuel microspheres by the rotating electrode method as an…
Electrical Properties of Cu Nanowires
Copper nanowires were patterned with e-beam lithography and fabricated with an e-beam evaporated Cu film. Electrical properties, including resistivity and temperature coefficient of resistance, were characterized for Cu nanowires with a width range of 90 nm to 330 nm. It was experimentally found that the surface and s…
Determination of Yarn Interlacing Frequency of Triangular Interlacing Nozzles through a Compressible Flow Simulation
A numerical approach to predict the yarn interlacing frequency of triangular interlacing nozzle is discussed in this paper. The inviscid, compressible flow field inside air nozzles is computed through solving the steady continuity, momentum and energy equations with a finite volume method. A mathematical model for the…
Effect of elliptical manufacture error of an axicon on the diffraction-free beam patterns
Based on the generalized Huygens-Fresnel diffraction integral theory and the stationary-phase method, we analyze the influence on diffraction-free beam patterns of an elliptical manufacture error in an axicon. The numerical simulation is compared with the beam patterns photographed by using a CCD camera. Theoretical s…
Evolução e gênese de um Plintossolo Pétrico concrecionário êutrico argissólico no município de Ouro Verde de Goiás
Solos concrecionários (Plintossolo Pétrico concrecionário) nas Regiões Central e Norte do Brasil são muito comuns, ocorrendo em áreas baixas e nas bordas das chapadas, constituindo geralmente solos distróficos,pobres em nutrientes. A ocorrência de solo concrecionário eutrófico no município de Ouro Verde de Goiás, em á…