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Process for recovering uranium from wet-process phosphoric acid using alkyl pyrophosphoric acid extractants

films and cylinders of rare earth doped yttrium aluminum garnets. ... We knew that yttrium aluminum garnet (YAG) could be doped with ...

3

TSI study of multiactivated SrS phosphors

A process is described for the recovery of uranium values from phosphoric acid utilizing an alkyl pyrophosphoric acid (Appa) primary extractant. After extracting the uranium from the phosphoric acid, the appa extractant is deactivated by heating and the uranium values stripped into a phosphoric acid strip solution containing ferric ion as a salting agent. The uranium values may then be re-extracted directly from this stripping solution without adjustment of its concentration into a dialkyl phosphoric acid trialkyl phosphine oxide synergistic extractant from which a relatively pure yellow cake is precipitated. A new procedure for preparing the requisite appa primary extractants is also disclosed.

1981-10-06

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Method of preparation of crystal borophosphate with zeolite structure. Sposob polucheniya kristallicheskogo borofosfata tseolitnoj struktury

Data of thermally stimulated luminescence (TSL) of single (Cu), double (Cu, Mn) and triple (Cu, Mn, Gd) activated SrS phosphors, which throws light on the nature and distribution of deeper traps have been presented. The samples are prepared by Bhawalkar's method and excited by UV 365 nm and #gamma#-rays to study the phenomenon. (author). 8 refs., 2 figs., 1 tab.

5

Luminescence properties of thallium crystal phosphors and their use in determining microgram quantities of thallium

Hydrothermal method for preparing crystal borophosphate with zeolite structure is suggested. To increase absorption capacity and thermal stability of final product, aluminium hydroxide sol, ethylenediamine and ethyl acetate are added to the mixture of crystal boric and concentrated phosphoric acids. Thermal stability of the specimens prepared constitutes 880-950 deg, water absorption capacity is within the limits of 0.30-0.32 cmT/g. 1 table.

1984-12-24

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The preparation and luminescence properties of crystal phosphors based on alkali metal iodide and calcium oxide substrates were studied. The highest luminescence intensities were achieved with iodide substrates at 200/sup 0/ and with the calcium oxide substrate at 800/sup 0/. The calibration graphs were linear in the thallium concentration ranges 0.03-5.0 and 0.1-2.0 mu g using sodium and potassium oxides, respectively, and in the range 0.05-5 mu g using cesium iodide and calcium oxide. A method is proposed for the determination of down to 3 x 10/sup -4/% thallium in rocks, using a crystal phosphor with sodium iodide substrate.

1986-02-01

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Advanced phosphors

Luminescent properties of Eu3+-activated Sr3B2SiO8: A red-emitting phosphor for white light-emitting diodes

This invention relates to new phosphor materials and to combinatorial methods of synthesizing and detecting the same. In addition, methods of using phosphors to generate luminescence are also disclosed.

2000-01-01

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Domain structure of ferrite-garnet crystalline plates (111) with uniaxial anisotropy

Single-phased Sr3B2SiO8:Eu3+ phosphor was prepared by a solid-state method at 1020 oC. The luminescence spectra showed that Sr3B2SiO8:Eu3+ phosphor can be effectively excited by near ultraviolet light (393 nm) and blue light (464 nm). When excited at 393 or 464 nm Sr3B2SiO8:Eu3+ exhibited the main emission peaks at 611 and 620 nm, which resulted from the supersensitive 5D0#->#7F2 transition of Eu3+. The luminescence intensity of Sr3B2SiO8:Eu3+ at 611 and 620 nm reached the maximum when the doping content of Eu3+ was 4.5 mol%. Its chromaticity coordinates (0.646, 0.354) were very close to the NTSC standard values (0.67, 0.33). Thus, Sr3B2SiO8:Eu3+ is considered to be an efficient red-emitting phosphor for long-UV InGaN-based light-emitting diodes. - Highlights: ? Sr3B2SiO8:Eu3+ was synthesized using solid-state reaction method for the first time. ? The phosphor can be efficiently ...

2011-07-01

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Effects of sputtering pressure on the characteristics of lithium ion conductive lithium phosphorous oxynitride thin film

Magnetic field, thickness and magnetic forming effect on general mode and quantitative parameters of the domain structure (DS) of ferrite-garnet (EuEr)/sub 3/(FeGa)/sub 5/O/sub 12/ monocrystalline plates (111) is investigated. Field interval of circle (cone) and ring domain stability is determined. It is shown that DS of ferrite-garnet crystals with uniaxial an6sotropy has some peculiarities, that can be explained by cubic anisotropy effect.

1982-03-01

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British Library Electronic Table of Contents (United Kingdom)

Lithium phosphorous oxynitride(Lipon) thin films as a lithium ion conductive electrolyte were prepared by radio frequency reactive sputtering in N2 plasma. The properties of the amorphous Lipon solid electrolyte were investigated as a function of N2 pressure during reactive sputtering. The ionic conductivity and the electrochemical stability of Lipon thin films improved drastically as the N2 pressure decreased. The ionic conductivity closed to 10?6 S cm?1 and obtained a stability window of 1.0?5.0 V with an N2 pressure of 5 mTorr, where the number of nitrogen bonds between the phosphate groups were more than those formed at higher pressure. It was possible to fabricate the Li//LiCoO2 complete thin film battery using this Lipon solid electrolyte, which exhibited excellent discharge characte...

2006-01-01

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Effect of Sr substitution on photoluminescent properties of BaAl2O4:Eu2+, Dy3+

British Library Electronic Table of Contents (United Kingdom)

Phosphor material BaAl2O4:Eu2+, Dy3+ with varying compositions of Sr substitution were prepared by the solid-state synthesis method. The phosphor compositions were characterized for their phase and crystallinity by XRD, SEM and TEM. Photoluminescence (PL) properties were investigated measuring PL and decay time for varying Ba/Sr compositions. The PL results show the blue shift in the luminescence properties in Sr substituted BaAl2O4:Eu2+, Dy3+ compared to parent BaAl2O4:Eu2+, Dy3+. It is probably due to the influence of 5d electron states of Eu2+ in the crystal field because of atomic size variation causing crystal defects. Dy3+ ion doping in the phosphor generates deep traps, which results in long afterglow phosphorescence.

2008-01-01

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RBS Characterization of Yttrium Iron Garnet Thin Films

High lithium ion conductive Li7La3Zr2O12 by inclusion of both Al and Si

Magnetic materials such as yttrium iron garnet (YIG) are of great importance for its magneto-optic properties and for their potential applications in the domain of optical telecommunications. The deposition of thin films of YIG, on quartz or GGG (gadolinium gallium garnet) substrate, was performed using radio frequency non reactive magnetron sputtering, followed by high temperature annealing which is needed to enhance the crystallinity of the layers. Rutherford backscattering spectrometry RBS was used to determine the thickness and stoichiometry of the performed layers in order to investigate correlations between growth conditions and the quality of the final material. RBS measurements showed the influence of the deposition time and the temperature substrate on the film growth and its stoichiometry. (author)

2008-12-13

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British Library Electronic Table of Contents (United Kingdom)

High lithium-ion (Li^+) conductive garnet-structured lanthanum lithium zirconate (LLZ) solid electrolyte is prepared by incorporation of appropriate amounts of silicon (Si) and aluminum (Al). The resultant pelletized LLZ obtains total Li^+ conductivity of 6.8x10^-^4Scm^-^1 at 298K. This improved conductivity is nearly identical with the bulk Li^+ conductivity of the LLZ reported earlier, suggesting that the grain boundary resistance is effectively reduced by the incorporation of Si and Al. Microanalyses by transmission electron microscopy coupled with energy-dispersive X-ray microanalysis and electron energy-loss spectroscopy revealed the presence of amorphous Li-Al-Si-O with nano crystalline LiAlSiO4 at grain boundaries. Fast lithium-ion transport around the amorphous Li-Al-Si-O/LiAlSiO4 ...

2011-01-01

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Preparation and applications of novel fluoroalkyl end-capped vinyltrimethoxysilane oligomer/hydroxyapatite nanocomposites

British Library Electronic Table of Contents (United Kingdom)

Novel fluoroalkyl end-capped vinyltrimethoxysilane oligomer/hydroxyapatite (HAp) nanocomposites were prepared by the reaction of calcium nitrate tetrahydrate and phosphoric acid in the presence of the corresponding oligomer. These fluorinated oligomer/HAp composites thus obtained are nanometer size-controlled fine particles (83-173 nm), and were found to exhibit good dispersibility in methanol, ethanol, and isopropyl alcohol. These fluorinated HAp nanocomposites were applied to the surface modification of glass and poly(methyl methacrylate) (PMMA) to exhibit good hydro- and oleophobic characteristics imparted by fluorine on their surface. In addition, the surface structural changes of the modified polyethylene terephtalate and PMMA films treated with these fluorinated nanocomposites before...

2009-01-01

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Grain-boundary self-diffusion of alloy 800 and influence of S, P and C on grain-boundary diffusion and creep cavity formation in alloy 800

Grain-boundary self-diffusion of alloy 800 and influence of S, P and C on grain-boundary diffusion and creep cavity formation in alloy 800

Alloy 800 is an austenitic Fe-Ni-Cr steel containing relatively minor but important amounts of carbon, aluminium and titanium. Special grades of alloy 800 known as 800H, 800HT and 800LC differ in the concentrations of these elements. In addition to these industrial specifications, further melts were prepared containing phosphorous or sulphur. Using a radioactive tracer method the bulk and grain-boundary diffusion of {sup 59}Fe was investigated in these alloys in the temperature range 800 to 1000 C. For evaluation of the diffusion profiles the approximation of Suzuoka was used, which considers the depletion of the tracer on the surface. By autoradiography it was confirmed that such depletion occurs. In alloy 800H the activation energy of grain-boundary diffusion of {sup 59}Fe was found to be (209{+-}17) kJ/mol; dissolved elements, especially phosphorous, increase the activation energy. The same materials - aged at 800 C for ...

1999-10-01

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A facile one-pot hydrothermal method to prepare europium-doped titania hollow phosphors and their sensitized luminescence properties

Alloy 800 is an austenitic Fe-Ni-Cr steel containing relatively minor but important amounts of carbon, aluminium and titanium. Special grades of alloy 800 known as 800H, 800HT and 800LC differ in the concentrations of these elements. In addition to these industrial specifications, further melts were prepared containing phosphorous or sulphur. Using a radioactive tracer method the bulk and grain-boundary diffusion of "5"9Fe was investigated in these alloys in the temperature range 800 to 1000 C. For evaluation of the diffusion profiles the approximation of Suzuoka was used, which considers the depletion of the tracer on the surface. By autoradiography it was confirmed that such depletion occurs. In alloy 800H the activation energy of grain-boundary diffusion of "5"9Fe was found to be (209#+-#17) kJ/mol; dissolved elements, especially phosphorous, increase the activation energy. The same materials - aged at 800 C for 100 h - ...

17

British Library Electronic Table of Contents (United Kingdom)

Monodisperse europium-activated titania hollow phosphors had been synthesized by a facile one-pot hydrothermal method using carbon spheres as hard templates. Samples were characterized by X-ray powder diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, energy dispersive spectrometer and photoluminescence spectrum. The strongest emission intensity was observed with TiO2:Eu0.2 hollow spheres and TiO2:Eu0.2 hollow spheres calcining at 550^oC. Moreover, the strongest excitation of TiO2:Eu0.2 hollow spheres transferred from 400 to 500^oC and the effective nonradiative energy transfer from the TiO2 hollow spheres host matrix to Eu^3^+ ions crystal field states was realized due to changes of crystalline field in the environment around Eu^3^+ ions occupying Ti^4^+ site...

2010-01-01

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Studies in crystal structure and luminescence properties of Eu3+-doped metal tungstate phosphors for white LEDs

Phosphoric Acid Modified Nb2O5: A Selective and Reusable Catalyst for Dehydration of Sorbitol to Isosorbide

Not Available

2011-12-01

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Minimally Invasive Endoscopic Pituitary Surgery

Full Text Available

2010-12-01

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Medline Plus

... There has been a role for placement of yttrium or radioactive phosphorous in a tumor called craniopharyngioma, ...

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Hydrocarbon cracking catalysts and processes for utilizing the same

This patent describes a catalyst comprising: (a) a non-zeolitic inorganic oxide matrix, and (b) an ultrastable Y-type crystalline zeolite, the ziolite having been pretreated by contacting the zeolite with a phosphorus compound selected from the group consisting of phosphoric acid, phosphorous acid, a salt of phosphoric acid, a salt of phosphorous acid, and mixtures thereof for a time sufficient to composite an effective amount of phosphorus with the zeolite.

1989-06-13

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,>22u

Synthesis and investigation of tungsten-phosphorus catalysts

(Watkins and. Corbett,. 1964) which is a phosphorous-vacancy complex, i.e., ...... Grover. 1965. Semiconductor. Surfaces. ...

23

Emittance theory for thin film selective emitter

The authors present the results of their investigation of the effect of phosphorus compounds on the activity of tungsten-containing catalysts in the oxidation of ethane. They investigated tungsten-phosphorus catalysts with different phosphorus concentrations (calculated on the basis of P/sub 2/O/sub 5/). The catalysts were prepared by heat decomposition of the starting compounds at 750/sup 0/C for 4 h. As their starting compounds, they used two types of materials: heteropoly acids mixtures of monosubstituted ammonium phosphoric and tungstic acids. The specific surface area of the catalysts was determined using the nitrogen desorption method. The x-ray phase analysis was carried out using a DRON-1.5 diffractometer. The catalytic activity was determined using the impulse method in a reactor with a vibrofluidized catalyst layer.

1988-11-10

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Effect of mineral compounds in phosphoric acid polluted by sulfide ions on corrosion of nickel

Thin films of high temperature garnet materials such as yttrium aluminum garnet (YAG) doped with rare earths are currently being investigated as selective emitters. This paper presents a radiative transfer analysis of the thin film emitter. From this analysis the emitter efficiency and power density are calculated. Results based on measured extinction coefficients for erbium-YAG and holmium-YAG are presented. These results indicated that emitter efficiencies of 50 percent and power densities of several watts/sq cm are attainable at moderate temperatures (less than 1750 K).

1994-08-01

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Structure dependent luminescence characterization of green-yellow emitting Sr2SiO4:Eu2+ phosphors for near UV LEDs

The inhibiting effects of two mineral compounds on corrosion of nickel in phosphoric acid (H[sub 3]PO[sub 4]) polluted by sulfide ions (S[sup 2[minus

1999-06-01

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Photoluminescence and cathodoluminescence properties of Tb3+ activated Sr3AlO4F emitting-color tunable phosphor

Not Available

2012-01-01

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British Library Electronic Table of Contents (United Kingdom)

Tb3+-activated Sr3AlO4F phosphors were synthesized by a high-temperature solid-state reaction method. The investigation of photoluminescence and cathodoluminescence indicates that these phosphors can be effectively excited by ultraviolet light and low-voltage electron beam. The phosphors exhibit a tunable-green emission. The luminescence behaviors are explained by the site occupancy of Tb3+ ions in the host crystal and the cross-relaxation of 5D3 to 5D4 state.

2011-01-01

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Photoluminescence and cathodoluminescence properties of Tb3+ activated Sr3AlO4F emitting-color tunable phosphor

Phosphorous Removal Rate of a Surface-Flow Treatment Wetland System Constructed on Floodplain During Its Initial Operating Stage

Tb3+-activated Sr3AlO4F phosphors were synthesized by a high-temperature solid-state reaction method. The investigation of photoluminescence and cathodoluminescence indicates that these phosphors can be effectively excited by ultraviolet light and low-voltage electron beam. The phosphors exhibit a tunable-green emission. The luminescence behaviors are explained by the site occupancy of Tb3+ ions in the host crystal and the cross-relaxation of 5D3 to 5D4 state.

2011-03-01

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Phosphors for flat panel emissive displays

Full Text Available

2003-12-01

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Double umbrella structure in terbium iron garnet

An overview of emissive display technologies is presented. Display types briefly described include: cathode ray tubes (CRTs), field emission displays (FEDs), electroluminescent displays (ELDs), and plasma display panels (PDPs). The critical role of phosphors in further development of the latter three flat panel emissive display technologies is outlined. The need for stable, efficient red, green, and blue phosphors for RGB fall color displays is emphasized.

1995-07-01

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Spectroscopy of gadolinium gallium garnet crystals doped with Y b3+ revisited

The umbrella magnetic structure of the terbium iron garnet (TbIG) has been studied using neutron diffraction experiments peformed in the 4.2 to 650 K temperature range which covers both the Neel temperature (Tsub(N) = 550 +- 10 K) and the compensation temperature (Tsub(comp) = 244 +- 2 K). When T > Tsub(N), the observed peak intensities originate from nuclear contribution only. When Tsub(comp) < T < Tsub(N), the results have been interpreted in the Neel theory of ferrimagnetism. Below Tsub(comp), three salient features have been observed: there appears superstructure lines forbiden by the cubic space group Ia3d, whereas the other superstructure peaks are found absent contrary to other heavy rare earth garnets; the strongest reflexion (110) vanishes near Tsub(comp). The magnetic modes associated to the rhombohedral symmetry space group R(-3)c have been calculated; the two inequivalent magnetic sites C_1 and C'_1 of the Tb"3"+ ion have ...

1984-04-10

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High frequency converters for thermophotovoltaic applications

The optical spectroscopy measurements of gadolinium gallium garnet (GGG) crystals doped with Yb show evidence of the presence of non-equivalent optical centers with very similar radiative decay rates. The energy level schemes of those centers have been determined on the basis of optical absorption, luminescence and Raman experiments. Crystal field fitting resulted in two sets of slightly different crystal field parameters for two non-equivalent Yb centers. Both sets of parameters describe perfectly the experimentally detected Y b3+ energy levels. Correlation between systematic trends in the experimental energy level schemes and crystal field parameters is discussed.

2010-06-30

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Preparation of CaWO{sub 4}:Ln{sup 3+} SiO{sub 2} (Ln=Tb, Dy and Ho) nanoparticles by a combustion reaction and their optical properties

Thermophotovoltaic (TPV) converters were developed and tested at the heat source operating temperature of 1,700 K. Rare-earth-doped yttrium aluminum garnet (YAG) and lutetium yttrium aluminum garnet (Lu, YAG) selective emitters, as well as a blackbody emitter, were coupled to InGaAs/InP photovoltaic (PV) cells and bandpass/infrared (IR) reflector filters. YAG-based selective emitters were adopted with Ho, Tm, and Er. PV cells had bandgaps of 0.51, 0.57, and 0.69 eV. Converter energy conversion efficiencies approaching 30%, as well as electrical output power densities near 2 W/cm{sup 2} were demonstrated. The overall performance of the filtered blackbody-based converter was found to be superior to the selective emitter YAG-based converters. The details of the measurements performed on the above converters and their individual components are presented.

1996-12-31

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Preparation of CaWO_4:Ln"3"+ SiO_2 (Ln=Tb, Dy and Ho) nanoparticles by a combustion reaction and their optical properties

The CaWO{sub 4}:Ln{sup 3+} SiO{sub 2} (Ln=Tb, Dy and Ho) nanoparticles were synthesized via a combustion process at 800 {sup o}C, using citric acid as chelating agent and fuel, ammonium nitrate as fuel, boric acid as flux material and silica as supports. The persistent phosphor nanoparticles were characterized by X-ray diffraction (XRD), reflectance UV-vis and fluorescence spectroscopy (PL) and transmission electron microscopy (TEM) techniques. XRD patterns indicated that crystalline calcium tungstate with scheelite structure was produced. The reflectance UV-vis spectra showed the broad absorption band of WO{sub 4}{sup 2-} groups and the PL spectra showed the WO{sub 4}{sup 2-} wide excitation band, broad emission band of WO{sub 4}{sup 2-} and characteristic emissions of Ln{sup 3+} ions. The average particle sizes were determined by TEM, which are about 50 nm.

2010-11-15

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Photoluminescence of europium doped LiInO2 powder

The CaWO_4:Ln"3"+ SiO_2 (Ln=Tb, Dy and Ho) nanoparticles were synthesized via a combustion process at 800 "oC, using citric acid as chelating agent and fuel, ammonium nitrate as fuel, boric acid as flux material and silica as supports. The persistent phosphor nanoparticles were characterized by X-ray diffraction (XRD), reflectance UV-vis and fluorescence spectroscopy (PL) and transmission electron microscopy (TEM) techniques. XRD patterns indicated that crystalline calcium tungstate with scheelite structure was produced. The reflectance UV-vis spectra showed the broad absorption band of WO_4"2"- groups and the PL spectra showed the WO_4"2"- wide excitation band, broad emission band of WO_4"2"- and characteristic emissions of Ln"3"+ ions. The average particle sizes were determined by TEM, which are about 50 nm.

2010-11-01

36

British Library Electronic Table of Contents (United Kingdom)

Abstract Lithium-indium oxide is one of the candidate materials as solid-state scintillators for solar neutrinos due to an inverse --decay of 115In to 115Sn. On the other hand, when doped with rare-earth ions such as Eu3+ or Sm3+, it becomes a promising phosphor material. In this report we present a simple solid-state procedure for preparation of LiInO2:Eu3+ powders. X-ray diffraction confirmed prod-uct in tetragonal structural form (space group: I41/amd) and no impurity phases were detected. Then, high resolution photoluminescence emission measurements were performed at room and low temperatures to find 5D0 - 7FJ. Emission kinetics from 5D0 level exhibited pure single exponential behavior with lifetime of about 1.5 ms. Maximum energy splitting of 7F1 manifold is recorded as a function of ...

2011-01-01

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Lithium intercalation in porous carbon electrodes

Direct sub-nanometer scale electron microscopy analysis of anion incorporation to self-ordered anodic alumina layers

Carbons derived from the phase separation of polyacrylonitrile/solvent mixtures were investigated as lithium intercalation anodes for rechargeable lithium-ion batteries. The carbon electrodes have a bulk density of 0.35-0.5 g/cm{sup 3}, relatively low surface areas (< 10 m{sup 2}/g), and micron-size cells. Pyrolysis temperature influences the reversible lithium intercalation and the irreversible capacity (associated with the formation of the passivating layer). Carbon electrodes pyrolyzed at 600{degrees}C have first-cycle capacity as high as 550 mAh/g as well as large irreversible capacity, 440 mAh/g. Electrodes prepared at 1050{degrees}C have reversible capacities around 270 mAh/g with relatively lower capacity losses (120 mAh/g). Doping the organic precursors with phosphoric acid, prior to pyrolysis at 1050{degrees}C, leads to carbon electrodes with reversible capacities as high as 450 mAh/g. The capacity of doped carbon increased with ...

1995-04-01

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Magnetic domains in martensite of Ni-Mg-Ga alloy

Research highlights: #-># Morphological and chemical characterization at atomic scale of porous alumina layers anodised in ordered regimes. #-># Characterization based on the use of FEG-SEM, STEM-HAADF, STEM-EELS and STEM-X-EDS. #-># Nanoscale distribution of P-, C- and S-bearing species in the pore wall. - Abstract: Ordered porous alumina layers prepared by two-step anodising in phosphoric, oxalic and sulphuric acids have been characterized at sub-nanometer scale using electron microscopy techniques. FEG-SEM and STEM-HAADF images allowed estimating the pore size, cell wall and pore wall thicknesses of the layers. Nanoanalytical characterization has been performed by STEM-EELS and STEM-X-EDS. Detailed features of the spatial distribution of anions in the pore wall of the films have been obtained. Maximum concentration of P-species occurs, approximately, at the middle of the pore wall; adjacent to the pore for C-species, whereas the ...

2010-11-01

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Luminescence properties of europium and terbium activated yttrium niobium/tantalate phosphors under VUV-UV excitation

The structural changes attendant on intermartensitic transformation in a Ni-Mg-Ga shape memory alloy are considered using magneto-optical visualization with the help of ferrite-garnet monocrystalline films. It is established that on the intermartensitic transformation the complete reorganization of martensite macrostructure fails. Martensite crystals resulted from the basic transformation change somewhat their sizes on intermartensitic transition. The existence of large-scale labyrinth magnetic domain structure is revealed

2006-05-01

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Development of Efficient UV-LED Phosphor Coatings for Energy Saving Solid State Lighting

Various compositions of Y(Ta,Nb)O4:Eu3+,Tb3+ with different Nb and activator concentrations have been investigated under UV and VUV excitation. Some compounds with very strong emission under VUV excitation were found. Such phosphors could be proposed as very good emissive materials for Displays and Lightings. The growing interest in luminescence spectroscopy of rare earth ions in the vacuum ultraviolet (VUV) and the visible (VIS) spectral range is due to industrial demands for new applications. YTaO4 and YNbO4 phosphors are a perspective class of efficient materials that are generally used in X-ray intensifying screens. These phosphors exhibit satisfying luminescence whenever excited by UV light, cathode radiation or X ray. However, to our knowledge, no work has been published on the VUV-excited luminescence for Eu3+ and Tb3+ double activated yttrium niobate and yttrium tantalate based phosphors. In ...

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Development of Efficient UV-LED Phosphor Coatings for Energy Saving Solid State Lighting

The University of Georgia, in collaboration with GE Global Research, has investigated the relevant quenching mechanism of phosphor coatings used in white light devices based on UV LEDs. The final goal of the project was the design and fabrication of a high-efficacy white light UV-LED device through improved geometry and optimized phosphor coatings. At the end of the research period, which was extended to seamlessly carry over the research to a follow-up program, we have demonstrated a two-fold improvement in the conversion efficiency of a white light LED device, where the increase efficacy is due to both improved phosphor quantum efficiency and lamp geometry. Working prototypes have been displayed at DOE sponsored meetings and during the final presentation at the DOE Headquarters in Washington, DC. During the first phase of the project, a fundamental understanding of quenching processes in UV-LEDs was obtained, and the ...

2006-05-15

42

Optical properties of excitation spectra of (Ca,Y)-#alpha#-SiAlON:Eu yellow phosphors

The University of Georgia, in collaboration with GE Global Research, has investigated the relevant quenching mechanism of phosphor coatings used in white light devices based on UV LEDs. The final goal of the project was the design and fabrication of a high-efficacy white light UV-LED device through improved geometry and optimized phosphor coatings. At the end of the research period, which was extended to seamlessly carry over the research to a follow-up program, we have demonstrated a two-fold improvement in the conversion efficiency of a white light LED device, where the increase efficacy is due to both improved phosphor quantum efficiency and lamp geometry. Working prototypes have been displayed at DOE sponsored meetings and during the final presentation at the DOE Headquarters in Washington, DC. During the first phase of the project, a fundamental understanding of quenching processes in UV-LEDs was obtained, and the ...

2006-05-01

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Rare-earth doped (#alpha#'/#beta#')-sialon ceramics

Elemental substitution of Ca by Y was investigated for Ca-#alpha#-SiAlON:Eu yellow phosphors, which is useful for the white light-emitting diode lamps of phosphor conversion type. Depending on the ratio of the elemental substitution, not only the red shift of emission in wavelength occurred but also the figure of the excitation spectra changed. Their excitation band widths and flatness were discussed. (copyright 2006 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim) (orig.)

2006-09-01

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Direct digital radiography versus storage phosphor radiography in the detection of wrist fractures

The objectives of this research were to investigate the possibility of controlling the #alpha#'/#beta#' phase ratio and morphology in Sialon ceramics. These objectives have been sought by the control of the starting composition, and by post sintering heat treatment. The main emphasis has been on the production of a series of #alpha#' and (#alpha#'+#beta#') Sialon ceramics with a minimum amount of the glass phase by the pressureless sintering technique and using ytterbium (Yb) as an #alpha#' stabilising element. The Yb additions were made via the oxide or the alumino- silicate presynthesised glass; the latter was found to improve the density. The XRD analysis of the as sintered materials revealed #alpha#' to be the dominant phase with minor contributions from #beta#' sialon and/ or 12H A1N polytype. Additions of SiO_2 or #beta#-Si_3N_4 were made to various materials to assess potential mechanisms for obtaining control over the microstructural development of #alpha#'/#beta#' sialon ...

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Direct digital radiography versus storage phosphor radiography in the detection of wrist fractures

AIM: To define the value of digital radiography with a clinical flat panel detector system for evaluation of wrist fractures in comparison with state of the art storage phosphor radiography. MATERIAL AND METHODS: Hard copy images of 26 fractured wrist specimens were acquired with the same exposure dose on a state of the art storage phosphor radiography system and a clinical flat panel detector. Image features like cortical bone surface, trabecular bone, soft tissues and fracture delineation were independently analysed by 4 observers using a standardised protocol. Image quality ratings were evaluated with an analysis of variance (ANOVA). RESULTS: Flat panel detector radiographs were rated superior with respect to cortical and trabecular bone representation as well as fracture evaluation, while storage phosphor radiographs produced better soft tissue detail. CONCLUSION: In some of the observed image quality aspects, the ...

2002-04-01

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Radiative performance of rare earth garnet thin film selective emitters

AIM: To define the value of digital radiography with a clinical flat panel detector system for evaluation of wrist fractures in comparison with state of the art storage phosphor radiography. MATERIAL AND METHODS: Hard copy images of 26 fractured wrist specimens were acquired with the same exposure dose on a state of the art storage phosphor radiography system and a clinical flat panel detector. Image features like cortical bone surface, trabecular bone, soft tissues and fracture delineation were independently analysed by 4 observers using a standardised protocol. Image quality ratings were evaluated with an analysis of variance (ANOVA). RESULTS: Flat panel detector radiographs were rated superior with respect to cortical and trabecular bone representation as well as fracture evaluation, while storage phosphor radiographs produced better soft tissue detail. CONCLUSION: In some of the observed image quality aspects, the ...

2002-04-01

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The effect of temperature on the radiative performance of Ho-YAG thin film selective emitters

In this paper the authors present the first emitter efficiency results for the thin film 40 percent Er-1.5 percent Ho YAG (Yttrium Aluminum Garnet, Y3Al5O12) and 25 percent Ho YAG selective emitter at 1500 K with a platinum substrate. Spectral emittance and emissive power measurements were made (1.2 less than lambda less than 3.2 microns). Emitter efficiency and power density are significantly improved with the addition of multiple rare earth dopants. Predicted efficiency results are presented for an optimized (equal power density in the Er, (4)I[sub 15/2]-(4)I[sub 13/2] at 1.5 microns, and Ho, (5)I[sub 7]-(5)I[sub 8] at 2.0 micron emission bands) Er-Ho YAG thin film selective emitter.

1994-08-01

48

Optimization of an interlaboratory program for the certification of a multi-element plagiogneiss reference material

The authors present the emitter efficiency results for the thin film 25 percent Ho YAG (Yttrium Aluminum Garnet, Y3Al5O12) selective emitter from 1000 to 1700 K with a platinum substrate. Spectral emittance and emissive power measurements were made (1.2 less than lambda less than 3.2 microns) and used to calculate the radiative efficiency. The radiative efficiency and power density of rare earth doped selective emitters are strongly dependent on temperature and experimental results indicate an optimum temperature (1650 K for Ho YAG) for thermophotovoltaic (TPV) applications.

1995-01-01

49

Effect of temperature gradient on thick film selective emitter emittance

A sample of garnet-biotite plagiogneiss, GBPg-1 is currently being developed as a certified reference material at the Vinogradov Institute of Geochemistry. It was used as the sample that was distributed round 7 of International Proficiency Testing Program (GeoPT7) and was analyzed by 76 geoanalytical laboratories around the world. Twenty Russian laboratories involved in the interlaboratory experiment also analyzed GBPg-1. The resultant analytical data obtained from these two experiments has allowed GBPg-1 to be certified as a state standard sample for 50 elements. It also enabled a comparison of the quality of data developed by the Russian and international geoanalytical laboratories, to optimize the outcome of this interlaboratory experiment.

2003-02-03

50

Element selective X-ray magnetic circular and linear dichroisms in ferrimagnetic yttrium iron garnet films

A temperature gradient across a thick ({ge}.1mm) film selective emitter will produce a significant reduction in the spectral emittance from the no temperature gradient case. Thick film selective emitters of rare earth doped host materials such as yttrium-aluminum-garnet (YAG) are examples where temperature gradient effects are important. In this paper a model is developed for the spectral emittance assuming a linear temperature gradient across the film. Results of the model indicate that temperature gradients will result in reductions the order of 20{percent} or more in the spectral emittance. {copyright} {ital 1997 American Institute of Physics.}

1997-03-01

51

Semi-empirical simulation of thermoluminescent response under different filter geometries; Simulacao semi-empirica da resposta termoluminescente sob diferentes geometrias de filtro

X-ray magnetic circular dichroism (XMCD) was used to probe the existence of induced magnetic moments in yttrium iron garnet (YIG) films in which yttrium is partly substituted with lanthanum, lutetium or bismuth. Spin polarization of the 4d states of yttrium and of the 5d states of lanthanum or lutetium was clearly demonstrated. Angular momentum resolved d-DOS of yttrium and lanthanun was shown to be split by the crystal field, the two resolved substructures having opposite magnetic polarization. The existence of a weak orbital moment involving the 6p states of bismuth was definitely established with the detection of a small XMCD signal at the Bi M{sub 1}-edge. Difference spectra also enhanced the visibility of subtle changes in the Fe K-edge XMCD spectra of YIG and {l_brace}Y, Bi{r_brace}IG films. Weak natural X-ray linear dichroism signatures were systematically observed with all iron garnet films and with a bulk YIG single crystal cut ...

2009-12-15

52

Many thermoluminescent materials has been developed and used for photon personal dosimetry but no one has all desired characteristics alone. These characteristics include robustness, high sensitivity, energy photon independence, large range of photon energy detection, good reproducibility, small fading and simple glow curve with peaks above 150 deg C. Calcium Sulfate Dysprosium doped (CaSO{sub 4}:Dy) phosphor Thermoluminescent Dosimeter (TLD) has been used by many laboratories, mainly in Brazil and India. Another interesting phosphor is Calcium Fluoride (CaF{sub 2}). These phosphor advantages begin to be more required and its disadvantages have became more apparent, in a global market more and more competitive. These phosphors are used in environmental and area monitoring, once they present more sensibility than other phosphors, like LiF:Mg. Theirs mainly disadvantage is a strong ...

2006-07-01

53

Multi-fragmentation

No abstract prepared.

1998-08-01

54

BIOINORGANIC CHEMISTRY

The Howard Hughes Medical Institute cassette for storage phosphor plates

No abstract prepared.

2002-01-01

55

Synthesis and characterization of new biopolymeric microcapsules containing DEHPA-?TOPO extractants for separation of uranium from phosphoric acid solutions

New cassettes for 201 mm{times}252 mm (8{double_prime}{times}10{double_prime}) and 201 mm{times}400 mm (8{double_prime}{times}15.75{double_prime}) storage phosphor plates have been developed at the Synchrotron Resource of the Howard Hughes Medical Institute. The purpose for this work was mainly twofold. Firstly, to diminish the number of manual operations when putting the storage phosphor plate into the cassette or when extracting it from the cassette. Secondly, to render such a cassette much lighter than the former metal cassette previously in use. These two goals were achieved by making new cassettes that are operated as one piece instead of two or three independent parts as with the former systems. The cassettes have been extensively tested and found to be very useful.

1994-03-01

56

British Library Electronic Table of Contents (United Kingdom)

A novel microcapsule adsorbent for separation of uranium from phosphoric acid solutions was developed by immobilizing the di(2-ethylhexyl) phosphoric acid-?trioctyl phosphine oxide extractants in the polymeric matrix of calcium alginate. Physical characterization of the microcapsules was accomplished by scanning electron microscopy and thermogravimetric techniques. Equilibrium experiments revealed that both ion exchange and solvent extraction mechanisms were involved in the adsorption of Formula Not Shown ions, but the latter prevailed in a wider range of acid concentration. According to the results of kinetics study, at low acidity level, the rate controlling step was slow chemical reaction of Formula Not Shown ions with the microdroplets of extractant, whereas it changed to intraparticle...

2011-01-01

57

Luminescence properties of Ca- and Yb-codoped SiAlON phosphors

Luminescence and x-ray absorption measurements of persistent SrAl2O4:Eu,Dy powders: Evidence for valence state changes

Luminescence properties of SiAlON phosphors codoped with Ca and Yb were investigated by changing the host lattice composition. These modifications of the host lattice were obtained by replacing Si-N bonds by Al-N and Al-O bonds. Their photoluminescence (PL) and cathodoluminescence (CL) properties were measured and compared with each other. PL allows observing the influence of the host lattice modifications by measuring wider areas. CL can excite all luminescent centers, in particular the UV luminescence centers, even if their amount is small. Thus, two additional peaks in the ultraviolet and infrared regions were observed in CL, which is not observed by PL. This work suggests that the combination of PL and CL gives more understanding about the luminescence of SiAlON phosphors, in particular the role of the secondary phases on their properties.

2008-01-15

58

Experimental Investigations into Phosphoric Acid Adsorption on Platinum Catalysts in a High Temperature PEM FuelCell

The development of new efficient afterglow phosphors is currently hampered by a limited understanding of the persistent luminescence mechanism. Radioluminescence (RL) and x-ray absorption measurements on the persistent phosphor SrAl2O4:Eu,Dy were combined to reveal possible valence state changes for the rare earth (co)dopants. Traps in the phosphor material are quickly filled when exposing thermally emptied SrAl2O4:Eu,Dy powder to x rays. On the same time scale a partial oxidation of Eu2+ to Eu3+ is observed by x-ray absorption near-edge spectroscopy (XANES), while for the trivalent dysprosium the valence state remains unchanged. The impact of these observations on the recently proposed models for persistent luminescence is discussed.

2011-08-01

59

British Library Electronic Table of Contents (United Kingdom)

Abstract Dynamic testing of a phosphoric acid-based high temperature PEM fuel cell shows a peculiar phenomenon. A certain current loss is observed after temperature cycling at constant voltage. This loss is incidentally recovered by applying a cell voltage spike to open circuit voltage. Experimental investigations into temperature, cell voltage, and ageing effects show that this phenomenon might occur due to the orientation of the adsorbed phosphate species on the platinum catalyst surface. Along with some supporting literature and experimental results, a hypothesis is presented in order to explain this occurrence. Phosphoric acid adsorption hysteresis on platinum catalyst due to temperature cycling could cause the temporary cell current loss. Electrode potential-dependent molecule symmetr...

2011-01-01

60

Biosorption of Acid Blue 25 by unmodified and CPC-modified biomass of Penicillium YW01: Kinetic study, equilibrium isotherm and FTIR analysis

British Library Electronic Table of Contents (United Kingdom)

The main objective of this work was to investigate the biosorption performance of unmodified and Cetylpyridinium chloride (CPC)-modified biomass of Penicillium YW 01 for Acid Blue 25 (AB 25). Maximum biosorption capacity of AB 25 onto CPC-modified biosorbent was 118.48mgg^-^1 under phosphoric-phosphate buffer with initial dye concentration of 200mgL^-^1 at 30^oC. The biosorption pattern of AB 25 onto unmodified biosorbent in aqueous solution and phosphoric-phosphate buffer was well fitted with both Langmuir and Freundlich isotherm models. While the equilibrium data of CPC-modified biosorbent in aqueous solution and phosphoric-phosphate buffer failed to fit the Freundlich isotherm model, indicating the monolayer biosorption formed onto CPC-modified biosorbent. The values of initial biosorpt...

2011-01-01

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

61

Red-shift of emission wavelength caused by reabsorption mechanism of europium activated Ca-#alpha#-SiAlON ceramic phosphors

Phosphorous adsorption and precipitation in a permeable reactive wall: Applications for wastewater disposal systems

The optical properties of divalent europium activated Ca-#alpha#-SiAlON were investigated and the excitation and emission processes were discussed. The emission wavelength is influenced by the activator concentration of Eu more than the codopant concentration of Ca, in case of the same matrix composition of #alpha#-SiAlON. The red-shift of emission increases when the concentration of Eu increases. In addition, it was revealed that the red-shift of emission would be caused by the construction of the package of optical device. The correlated color temperature becomes low by the red-shift for the white light-emitting diode (LED) lamp using Ca-#alpha#-SiAlON:Eu phosphor when the phosphor powder concentration increases in the transparent resin which coats the primary light source of a blue LED die. The additional red-shift can be observed when the excessive amount of phosphor coating is intentionally poured to the white LED ...

2007-10-01

62

A Comparison of intra-oral digital imaging modalities: Charged Couple Device versus Storage Phosphor Plate

A permeable reactive mixture has been developed using low cost, readily available materials that is capable of providing effective, long-term phosphorous treatment in areas impacted by on-land wastewater disposal. The reactive mixture creates a geochemical environment suitable for P-attenuation by both adsorption and precipitation reactions. Potential benefits include significant reductions in phosphorous loading to receiving groundwater and surface water systems, and the accumulation of P-mass in a finite and accessible volume of material. The mixture may be applied as a component within surface treatment systems or in subsurface applications such as horizontal or vertical permeable reactive walls. The mixture averaged > 90% treatment efficiency over 3.6 years of continuous-flow laboratory column experiments. The mixture was further evaluated at the pilot-scale to treat municipal wastewater, and the field-scale to treat a well-characterized ...

1997-12-31

63

Impact of Collateral Damage to Endourologic Tools During Laser Lithotripsy???In Vitro Comparison of Three Different Clinical Laser Systems

BackgroundThis in vitro study was conducted to compare the accuracy of two digital image receptors in identifying the location of tip of a fine endodontic file and radiographic apex...Full Text Available

2010-11-01

64

British Library Electronic Table of Contents (United Kingdom)

Abstract Background and Purpose: During laser lithotripsy, working instruments are often in close proximity to the distal fiber tip and may be damaged accidentally or even intentionally. The aim of this study was to compare the amount of damage to a standard guidewire and the nitinol wires of endourologic retrieval baskets that were affected by three different clinically available laser systems. Materials and Methods: The impact of pulsed laser irradiation on a standard hydrophilic guidewire and a retrieval basket were investigated. One infrared (IR) laser system (holmium:yttrium-aluminum-garnet [Ho:YAG]: ????=???2100???nm) and two laser systems emitting light in the visible (VIS) spectral range (frequency-doubled double-pulse neodymium:YAG [FREDDY]: ????=???532???nm/1064???nm and flashl...

2011-01-01

65

Brown diamonds from an eclogite xenolith from Udachnaya kimberlite, Yakutia, Russia

British Library Electronic Table of Contents (United Kingdom)

Abstract: We have performed petrographic and spectroscopic studies of brown diamonds from an eclogite xenolith from the Udachnaya pipe (Yakutia, Russia). Brown diamonds are randomly intermixed with colorless ones in the rock and often located at the grain boundaries of clinopyroxene and garnet. Brown diamonds can be characterized by a set of defects (H4, N2D and a line at 490.7nm) which are absent in colorless diamonds. This set of defects is typical for plastically deformed diamonds and indicates that diamonds were likely annealed for a relatively short period after deformation had occurred. Excitation of brown colored zones with a 632.8nm He-Ne laser produced the typical diamond band plus two additional bands at 1730cm^-^1 and 3350cm^-^1. These spectral features are not genuine Raman ban...

2011-01-01

66

Preparing the works for the St-Genis roundabout.

Waste to energy technologies.

Preparing the works for the St-Genis roundabout.

1999-01-01

67

Temperature of exploding nuclei

No abstract prepared.

2010-04-01

68

No abstract prepared

1999-10-01

69

Status report ANKE

Pionic fusion on the deuteron

No abstract prepared.

2002-03-01

70

Nano technology and radiotracers

No abstract prepared.

2002-03-01

71

NEUTRINOS, PAST AND PRESENT.

No abstract prepared.

2008-10-15

72

Human cornea glycosaminoglycans

No abstract prepared.

2002-10-11

73

The surface modification of tooth dentine with a Free Electron Laser (FEL)

No abstract prepared.

1997-07-01

74

Digital direct magnification mammography with storage phosphor screens. Standardized and image result dependent post-processing parameters

Free Electron Laser (FEL) with the wide wavelength tunability has been developed and used for various applications. The FEL gives high efficiency for the photo-induced ablation when the laser is tuned to an absorption maximum of the target. The FEL was tuned to 9.4 #mu#m, which is an absorption maximum of phosphoric acid ion, a known major component of dentine. The FEL pulse length was several ps. The average output power was varied from 5 to 20 mW by filters. The change of irradiated dentine surface was analyzed by mass spectroscopy and Energy Dispersive X-ray (EDX) spectroscopy. Positive ions which correspond to Na"+, CO_3"+ and many phosphoric acid ions were measured. It was found that atomic ratio of P/Ca had reduced from 0.65-0.60. The atomic ratio of P/Ca, however had not changed with irradiation by Er:YAG laser (2.9 #mu#m), or CO_2 laser (10.6 #mu#m). These results indicate the selective ablation of phosphoric acid ...

1998-09-02

75

Brine chemistry and control of adverse chemical reactions with natural gas production. Annual report, January-December 1986

Present day mammography has not been able to make use of the advantages of digital luminescence radiography because of the limited spatial resolution. The recent development of electromagnetic focusing X-ray tube with effective focal spot sizes from 0.04 to 0.12 mm allows radiographic direct magnification with less geometric blur. It is now possible to combine direct magnification mammography with digital luminescence radiography. By combining high quality storage phosphor screens with an HQ-workstation a spatial resolution of 8 lp/mm is possible for 1.7-fold magnification. For 4-fold spot magnification views spatial resolution can be theoretically increased to approx. 20 lp/mm. One important advantage of digital radiography is the possibility of image-postprocessing. This article presents two sets of standard parameters and three sets of image dependent parameters for better imaging of specific lesions, such as microcalcifications. The introduction of the storage ...

76

Transformation of polyconjugation systems as a factor of enhancing the sorption activity of peat upon its modification with phosphoric acid and organic acids

Monitoring brine chemistry to determine the extent of potential adverse reactions has been simplified by the development of a field-brine test kit and a series of nomographs. Results of the kit analyses serve as input to the nomographs, which provide a graphic means of determining the scaling tendency (Saturation Index value) of a brine. Brines that do not tend to form scale may be corrosive. Saturation Index values were correlated with various processes using data from geopressured wells in the Gulf Coast area. Control of scale in surface equipment with chemical inhibitors has been successful. Numerous laboratory simulations of inhibitor squeeze operations were completed using core material with calcite present and absent. The corresponding wells were squeezed with phosphorous-containing inhibitors, and the flowback of brine was monitored for phosphorous concentrations vs time. A new procedure to measure the concentration of ...

1987-01-01

77

British Library Electronic Table of Contents (United Kingdom)

The treatment of peat with the solutions of phosphoric, citric, and oxalic acids in concentrations of 10???4 and 10???2 mol/l at solid phase to liquid ratios of 1: 2.5 and 1: 5 increased the absorption of ammonia by 6.4???39.7%. The absorption of ammonia was higher than the concentration of doping ion-exchange groups by a factor of 5???2000. With the use of EPR and IR spectroscopy, it was found that this phenomenon was caused by the transformation of polyconjugation systems as a result of the interaction of acids with the organic matrix of peat by a macrocoordination mechanism, which also improved the technological characteristics of the resulting sorbents. The absence of the destruction of organic matter with the use of low concentrations of weak acids makes it possible to use these sorbe...

2011-01-01

78

Sensitization and radiation hardening of the photostimulable X-ray storage phosphor CsBr:Eu2+

British Library Electronic Table of Contents (United Kingdom)

The X-ray storage phosphor CsBr:Eu2+ in form of needle image plates is believed to be a promising alternative to the granular BaFBr:Eu2+ with regard to PSL yield and spatial resolution. Unfortunately, CsBr:Eu2+ exhibits poor radiation hardness, which is caused by a migration of europium ions initiated by naturally existing defect centers like (Eu2+-VCs)-centers and X-ray generated MEu-centers. It will be shown that the formation of (Eu2+-O2?)-dipoles at the expense of (Eu2+-VCs)-dipoles, incorporated by thermal annealing in O2-containing and humid atmosphere, does not improve the radiation stability. There is, however, a strong improvement in the radiation hardness by codoping of CsBr:Eu2+ with lithium ions, which is accompanied by a complete suppression of the previously observed MEu-cent...

2009-01-01

79

Local Ce environments and their effects on optical properties of SrS phosphors

Large scintillation cells for high sensitivity radon concentration measurements

In this study, we use electron paramagnetic resonance (EPR), optical absorption, and photoluminescence (PL) spectroscopies to determine the various Ce environments in SrS phosphor materials and how these affect absorption and emission properties. As the Ce concentration is increased from 450 to 7500 ppm, the total EPR-active Ce"3"+ and optical absorption signals increase linearly with Ce concentration; by contrast, the PL intensity saturates at fairly low Ce concentrations (1000 ppm Ce). We suggest that the nonlinear behavior of the PL arises from the presence of nonradiative deexcitation pathways such as defects associated with Ce sites, or Ce endash Ce pairs. copyright 1996 American Institute of Physics.

80

Large scintillation cells for high sensitivity radon concentration measurements

Methods for improving the sensitivity of scintillation cells for radon concentration measurements were studied with emphasis on improving light collection efficiency. This allows the length and hence the volume of the cell to be increased. Variables studied were choice of scintillator material, its method of application and thickness, length of cell, cell material, type and configuration of reflectors, choice of photomultipliers, and factors affecting background. Response from various areas of the cell surface was studied with an alpha source and with radon filling. Coating the window with phosphor was found to be counter-productive. The optimum results obtained were with the inside of the cell (other than the window) covered with a thick layer of ZnS(Ag), or with a thick layer of reflective material coated with a thin layer of phosphor. With it, a 10 cm diameter plexiglass cell can be extended to at least 50 cm length without difficulty from ...

1983-07-01

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

81

Ability of a ?minimum?? microbial food web model to reproduce response patterns observed in mesocosms manipulated with N and P, glucose, and Si

Methods for improving the sensitivity of scintillation cells for radon concentration measurements were studied with emphasis on improving light collection efficiency. This allows the length and hence the volume of the cell to be increased. Variables studied were choice of scintillator material, its method of application and thickness, length of cell, cell material, type and configuration of reflectors, choice of photomultipliers, and factors affecting background. Response from various areas of the cell surface was studied with an alphy source and with radon filling. Coating the window with phosphor was found to be counter-productive. The optimum results obtained were with the inside of the cell (other than the window) covered with a thick layer of ZnS(Ag), or with a thick layer of reflective material coated with a thin layer of phosphor. With it, a 10 cm diameter plexiglass cell can be extended to at least 50 cm length without difficulty from ...

82

British Library Electronic Table of Contents (United Kingdom)

We compared an idealised mathematical model of the lower part of the pelagic food web to experimental data from a mesocosm experiment in which the supplies of mineral nutrients (nitrogen and phosphorous), bioavailable dissolved organic carbon (BDOC, as glucose), and silicate were manipulated. The central hypothesis of the experiment was that bacterial consumption of BDOC depends on whether the growth rate of heterotrophic bacteria is limited by organic-C or by mineral nutrients. In previous work, this hypothesis was examined qualitatively using a conceptual food web model. Here we explore the extent to which a ?simplest possible?? mathematical version of this conceptual model can reproduce the observed dynamics. The model combines algal?bacterial competition for mineral nutrients (phosphor...

2007-01-01

83

The separation and determination of trace elements in iron ore

Sustainable phosphorous fertilisation of potatoes (Potato CHIPS)

The separation, concentration, and determination of trace elements in iron ores are described. After the sample has been dissolved, the iron is separated by liquid-liquid extraction with a liquid cation-exchanger, di-(2-ethylhexyl) phosphoric acid. The trace elements aluminium, cadmium, calcium, chromium, cobalt, copper, lead, magnesium, manganese, mercury, potassium, sodium, vanadium, and zinc are determined in the aqueous phase by atomic-absorption spectrophotometry.

2008-05-01

84

Environmental Research Database

DescriptionThis project has two independent aims: (1) to investigate the use of struvite as an alternative to chemical P fertilisers and (2) to develop an oligonucleotide microarray to monitor the P status of the potato crop. The UK horticultural and agricultural industries rely on large inputs of phosphate (P) fertilisers to maintain crop yields and quality. However, the use of non-renewable, chemical P fertilisers is unsustainable, and the alternatives to chemical P-fertilisers must be identified as an [continued...

2008-01-31

85

Redox battery

Impact of computers in radiography: the advent of digital radiography, part-2

In a redox battery using a titanium redox system or chromium redox system as an active material for the negative electrode or a manganese redox system as an active material for the positive electrode, the electromotive force of the battery and the stability of electrolyte solutions are enhanced by addition of a chelating agent such as citric acid or a complexing agent such as phosphoric acid to the redox system used therein.

1982-12-07

86

A gas chromatographic analysis of phosphine in biological material in a case of suicide

Computed radiography (CR) systems use a photostimulable phosphor plate enclosed in a cassette. In CR, image acquisition is a two-stage process wherein image capture and image read out are done separately. Direct digital radiography (DR) systems, on the other hand, use detectors that have a combined image capture and image read out capability. DR systems are also called as DDR or ddR systems by some vendors. This article focuses on DR systems

2008-08-01

87

British Library Electronic Table of Contents (United Kingdom)

In a suicide committed using aluminium phosphide (AlP) the liberated toxic phosphine gas was detected in post-mortem specimens using a headspace gas chromatographic procedure with a nitrogen-phosphorous detector (HS-GC/NPD). At autopsy a direct sampling into airtight headspace vials for a later analysis is recommended. AlP has to be considered a potent pesticide and its use and availability should be restricted as much as possible.

2008-01-01

88

{sigma}-Hyperon production at COSY-TOF

{lambda}-Hyperon production at COSY-TOF

No abstract prepared.

2002-03-01

89

Tracing cosmic star formation with EXIST

No abstract prepared.

2002-03-01

90

The TofRoot project - status and perspectives

No abstract prepared.

2004-01-01

91

THE STAR TIME PROJECTION CHAMBER.

No abstract prepared.

2002-03-01

92

Summary of COSY-13 results

No abstract prepared.

1999-05-10

93

Simulation of neutron detector efficiencies

No abstract prepared.

2002-03-01

94

Server Complexity, A Model for Managing Resources

No abstract prepared.

2002-03-01

95

Self-neutralized Ion Implantation into Insulators

No abstract prepared.

1999-12-01

96

Safe landing; Sicher landen

No abstract prepared.

1996-11-01

97

Reliability analysis of pipe whip impacts.

No abstract prepared.

2003-05-01

98

Reaction of ions in radiation chemistry

No abstract prepared.

2005-08-01

99

Quark-Hadron Duality in Mesons Electroproduction

No abstract prepared

1998-01-01

100

Proteome analysis of castor bean seeds

No abstract prepared.

2007-08-01

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

101

Production of {omega}-mesons at COSY-11

No abstract prepared.

2008-07-01

102

Predictive capability maturity model.

No abstract prepared.

2002-03-01

103

Predictive capability maturity model (PCMM).

No abstract prepared.

2006-03-01

104

PGA of boron- and hydrogen-bearing minerals

No abstract prepared.

2007-01-01

105

Oxygen enrichment of blast in cupola furnace

No abstract prepared

1998-01-01

106

Nuclear physics with a free electron laser

No abstract prepared.

2007-07-01

107

Natural analogue study of Oklo

No abstract prepared.

2002-07-01

108

NETWORK TRAFFIC CHARACTERIZATION OF TCP

No abstract prepared

1998-01-01

109

Molecular portraits of human breast tumours

No abstract prepared.

2000-06-01

110

Methodologies for multiphase reacting flow simulation.

No abstract prepared.

2000-08-01

111

Mechanoluminescence of g-irradiated salt

No abstract prepared.

1997-01-01

112

Measurement of longitudinal distribution of electron beam

No abstract prepared.

2002-07-01

113

LOUISIANA COASTAL WETLANDS MODELING

No abstract prepared.

2001-07-01

114

No abstract prepared.

1999-12-01

115

LCLS XTOD Fixed Mask

Is there a role for financial investors in carbon markets?

No abstract prepared.

2006-10-11

116

Irradiation effects on electronic functional materials

No abstract prepared.

2009-07-01

117

Investigation of Hypergolic Fuels with Hydrogen Peroxide

No abstract prepared

1998-01-01

118

Integrated chip-scale THz technology.

No abstract prepared.

2000-11-15

119

Identification of deuterons with high momenta at ANKE

No abstract prepared.

2009-11-01

120

Heavy-ion RBE and microdosimetric spectra

No abstract prepared.

2002-03-01

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

121

Handheld trace explosives detector.

No abstract prepared.

2000-09-01

122

Glycosaminoglycan synthesis by human corneal explants

No abstract prepared.

2006-11-01

123

Equivalence classes for gauge theories

No abstract prepared.

1998-07-01

124

Engineering Annual Summary 2003

No abstract prepared.

2008-07-01

125

Emerging laboratory biosecurity issues.

No abstract prepared.

2004-07-21

126

Direct measurement of flow in fractures.

No abstract prepared.

2005-04-01

127

Data-model integration is not magic

No abstract prepared.

2004-06-01

128

Data and facts; Daten und Fakten

No abstract prepared.

2005-03-01

129

Atmospheric Processing Platform (Presentation)

No abstract prepared.

2008-03-15

130

Accelerator parameters for gamma gamma colliders

No abstract prepared.

2008-04-01

131

A study of neutron transmutation doped germanium

No abstract prepared.

1995-02-01

132

A Software Quality Engineering Maturity Model

No abstract prepared

1998-01-01

133

2004 RERTR International Proceedings

No abstract prepared.

2009-05-08

134

Synthesis of yttrium iron garnet powder by homogeneous precipitation and its crystallization

No abstract prepared.

2004-11-07

135

Reflection-Free One-Way Edge Modes in a Gyromagnetic Photonic Crystal

YIG precursor powder was obtained by homogeneous precipitation in chloride salt solution by thermal decomposition of urea. It was found that ferric ions precipitated prior to yttrium ions. The precipitate was minute and spherical in shape. The precipitate formed consisted of the mixture of amorphous and ferric oxyhydroxide. Crystallization of YIG was proceeded by solid state reaction of intermediate YFeO{sub 3} and Fe{sub 2}O{sub 3} in the temperature range of 850 deg. C to 1400 deg. C. Single phase of YIG was obtained by heat-treatment of the powder at 1400 deg. C for 6 hrs in air. The powder calcined was molded into pellets and sintered in air. The maximum density of 4.92 g/cm{sup 3} (95.1% of theoretical density) was obtainable for the pellet sintered at 1450 deg. C using the powder calcined at 900 deg. C. (author) 20 refs., 8 figs., 1 tab.

1996-06-01

136

A radiogenic Os component in the oceanic lithosphere? Constraints from Hawaiian pyroxenite xenoliths

We point out that electromagnetic one-way edge modes analogous to quantum Hall edge states, originally predicted by Raghu and Haldane in 2D gyroelectric photonic crystals possessing Dirac point-derived bandgaps, can appear in more general settings. In particular, we show that the TM modes in a gyromagnetic photonic crystal can be formally mapped to electronic wavefunctions in a periodic electromagnetic field, so that the only requirement for the existence of one-way edge modes is that the Chern number for all bands below a gap is non-zero. In a square-lattice gyromagnetic Yttrium-Iron-Garnet photonic crystal operating at microwave frequencies, which lacks Dirac points, time-reversal breaking is strong enough that the effect should be easily observable. For realistic material parameters, the edge modes occupy a 10% band gap. Numerical simulations of a one-way waveguide incorporating this crystal show 100% transmission across strong defects, such as perfect ...

2007-01-01

137

British Library Electronic Table of Contents (United Kingdom)

Platinum Group Element (PGE) concentrations in garnet pyroxenite xenoliths from Oahu, Hawaii, are significantly lower than those in mantle peridotites and show fractionated patterns (e.g. PdN/OsN=2-10, PdN/IrN=4-24; N=chondrite normalized) and very high ReN/OsN ratios (9-248). Mass balance calculations show that the bulk rock pyroxenite PGE inventory is controlled by the presence of sulfide phases. The 187Os/188Os ratios of these pyroxenites vary from subchondritic to suprachondritic (0.123-0.164); and the 187Os/188Os ratios show good correlations with bulk rock and clinopyroxene major and trace element compositions, and bulk rock PGE and sulfur abundances. These observations suggest that the Os isotope compositions in these pyroxenites largely reflect primary processes in the oceanic mant...

2011-01-01

138

Absorption and emission characteristics of Er{sub 3}NbO{sub 7} phosphor: A comparison with ErNbO{sub 4} phosphor and Er:LiNbO{sub 3} single crystal

VEHICLE OPERATION PLAN PREPARATION INFORMATION, RECORDING MEDIUM, AND VEHICLE OPERATION PLAN PREPARATION DEVICE

Er{sub 3}NbO{sub 7} phosphor was synthesized by sintering a mixture of Er{sub 2}O{sub 3} and Nb{sub 2}O{sub 5} powder in a molar ratio of 3:1 at 1600 deg. C over 55 h. Optical absorption and emission characteristics of Er{sup 3+} ions in the calcined Er{sub 3}NbO{sub 7} powder were investigated and discussed compared with ErNbO{sub 4} phosphor and a Z-cut congruent Er (2 mol%):LiNbO{sub 3} single crystal. The absorption and emission studies show that, due to different crystal structures, the spectroscopic properties of these niobates have some differences in spectral shape, peak position, and relative intensity, especially at 1.5 {mu}m. The most obvious spectral feature of the Er{sub 3}NbO{sub 7} is that the spectral structure of band instead of peak is observed in its absorption or emission spectrum due to the existence of local structural disorder and multiple Er{sup 3+} sites. The Er{sub 3}NbO{sub 4} shows stronger upconversion emission than ...

2007-12-15

139

J-STORE (Japan)

Full Text Available

2007-11-22

140

Secondary fuel for power generation - preparation, technology, cost; Sekundaerbrennstoff zur energetischen Verwertung - Aufbereitung, Technik, Kosten

PLZT Ceramics Prepared from Conventional and Microwave Hydrothermal Powders

No abstract prepared.

2001-07-01

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

141

Impact of focussed ion beam (FIB) preparation on the potential structure of silicon semiconductors

PLZT Ceramics Prepared from Conventional and Microwave Hydrothermal Powders

1999-01-01

142

Verification of electron beam therapy with storage phosphor images: Precision of field placement

No abstract prepared.

2006-07-01

143

The Study of Phosphors Efficiency and Homogeneity using a Nuclear Microprobe

Portal verification images were generated from the photon contamination in electron beams produced by a linear accelerator during treatment of patients receiving high-energy electron radiation therapy (8-14 MeV). An experimental storage phosphor system was used to record the images and display them on laser-printed film. Images were obtained from four or more treatment fractions from 21 cases of head and neck cancer. Precision in field placement was estimated by determining the position of a selected anatomic landmark relative to the center of the field for each series of images. The average standard deviation in the field-position measurements was 3.8 mm. Several procedural problems were also detected and corrected after review of the verification images. The results indicate that the emphasis placed on monitoring and control of field-positioning error in high-energy electron treatments should be similar to the emphasis placed on this aspect of error in photon ...

1990-04-01

144

The Structural and Optical Properties of GaAs1-xPx /GaAs

Ion Beam Induced Luminescence (IBIL) and Ion Beam Induced Charge Collection (IBICC) have been applied in the study of the luminescence emission efficiency and investigation of the homogeneity of the luminescence emission in phosphors. The IBIL imaging was performed by using sharply focused ion beams or broad/partially-focused ion beams. The luminescence emission homogeneity in samples was examined to reveal possible distributed crystal-defects that may lead to the inhomogeneity of the luminescence emission in samples.The purpose of the study is to search for suitable luminescent thin films that have high homogeneity of luminescence emission, large IBIL efficiency under heavy ion excitation, and can be placed as a thin layer on the top of microelectronic devices to be analyzed with Ion Photon Emission Microscopy (IPEM). The emission yield was found to be low for organic materials, due to saturation of the light output dependence on the energy deposition of heavy ...

2000-12-08

145

Synthesis, structure and luminescence of LaSi3N5:Ce3+ phosphor

GaAs1-xPx p-n junction structures were grown on the epi-ready n-type GaAs(100) substrate by solid source MBE system for different phosphor compositions. To obtain the lattice-match sample structure was applied graded growth procedure. The structural and optical properties of the sample structures with different P concentration were investigated by using X-ray diffraction (XRD), spectroscopic ellipsometry (SE). In addition, The range of lattice parameters in the graded epilayer and phosphorous composition were determined from the HRXRD rocking curve simulation. We analyse dielectric function spectra of disordered GaAs1-xPx junction structures measured using spectroscopic ellipsometry at room temperature in the 0.6-4.7 eV photon energy region. The critical energy points such as band gap energy and spin-orbit-split energy of these structures were determined using SE data. It is detected that E0, E1 ,E2 energies of the GaAs1-xPx p-n junction ...

2008-08-25

146

High-resolution beta imaging; L'imagerie beta haute resolution

In this work, new LaSi3N5:Ce3+ phosphors have been synthesized by solid-state reaction. Rietveld refinement of the crystal structure of La1-xCexSi3N5 reveals that Ce atoms substituted for La atoms occupy 4a crystallographic positions. Broad emission and excitation bands observed were attributed to the transitions between the doublet ground state of the 4f1 configuration and the crystal field components of the 5d1 excited state. At 77 K, the centroid and crystal field splitting ?cfs of the 5d levels of Ce3+ in LaSi3N5:Ce3+ compounds were valuated at 33.4x103 and 11.3x103 cm-1, respectively. The zero-phonon line and the Stokes shift were measured to be 26.0x103 and 5.0x103 cm-1, respectively.

2009-03-01

147

Considerations on the phosophoro-uraniferous mineralization of Itataia deposit-CE, Brazil

For many years, {beta} radioactivity has been used to label molecules and follow them in various biological processes. {beta} imaging is obtained by autoradiography. Classically made on films or on photographic emulsions, autoradiography is now supplanted by radio-imagers which are very performing. The phosphor-imager, {beta}-imager and {mu}-imager are the systems mainly used today and their operating principles and properties are compared. The great advantages of these imagers are: their rapidity to obtain results and their reliability for absolute quantification. All emitters ({beta}{sup -}, {beta}{sup -} -{gamma} and {beta}{sup +}) are detectable as well as the gamma emitters of nuclear medicine, by means of their low energy electrons ejected during y emission. Phosphor-imager is well suited to energetic tracers and large series of experiments. Real time radio-imagers ({beta}-imager and {mu}-imager) are preferred to verify experimental ...

2007-04-15

148

CR portal imaging; A linac graphy using storage phosphor imaging systems

Phosphoro-uraniferous deposit of Itataia is situated in Precambrian metamorphic terrains, into the litho-stratigraphic unit named Caico Complex. Regionally, the rocks are linearly folded, as a result of compressive tectonic that fits in the regmatic pattern. Rio Groairas' and Itatira's wrench faults form shearing couples in which the drag folds' climax are thrusting faults with axial plane dipping north. Uranium mineralization occurs into a phosphatic rock containing about 80% of collophane - 'collophanite - in association chiefly with marbles or feldsphatic rocks and gneisses. The ore (collophanite) occurs mainly as a stockwork, and it may be massive, (into big joints) or disseminated (impregnating the host rocks). Dark ore appears only in brecciated zones; it is richer in uranium content, but poorer in phosphorous. The highest grade ore is in a very fractured zone, associated to marbles. Supergene enrichment took place in this area. Underground works show that ...

2006-08-01

149

Synthesis and spectral characteristics of Sr2Y8(SiO4)6O2: Eu polycrystals

In portal images with high energy X-ray (10 MV), it is sometimes difficult to verify the irradiation field because of the low contrast. Especially, in the abdominal and pelvic region, the deterioration of portal image quality is remarkable. To solve this problem, we took portal images using computed radiography (FCR). Also, we develop a technique in which a copper plate (3 mm) and lead foil (0.3 mm) are closely set in the front and rear of the photostimulable phosphor plate (imaging plate), for increased energy absorption. As a result, image quality was very high and we confirmed image improvement using observer performance experiments. We made a special cassette which can closely set metallic plates to imaging plate and load FCR-7000 directly. Therefore, image process becomes simple, and suitable for routine work. In computed radiography, image processing (tone scale modification and edge enhancement) is possible, and is advantageous portal imaging. When PACS is ...

1992-07-01

150

H/sup +/ and OH/sup -/ electrolytes for the 300/sup 0/ - 600/sup 0/C range

Spectral-luminescent characteristics of Sr2Y8(SiO4)6O2: Eu powder crystal phosphor with the apatite structure and high-intensity luminescence of Eu3+ ions have been studied. The charge state of europium in the samples has been characterized by means of X-ray L3-adsorption spectroscopy. It was established that Eu3+ forms two types of optical centers. Besides, luminescence of Eu2+ions was found. Reduction Eu3+#->#Eu2+ was considered, which may be due to VSr|| vacancy formation in the 4f crystal lattice position and to negative charge transfer by this vacancy to two EuY3+ ions. Thus, in the silicate lattice there exist inhomogeneously distributed oxygen-deficient centers, which are responsible for nonradiative transfer of excitation energy to Eu3+ and Eu2+ ions. To study electron-vibrational interactions in the crystal phosphor samples, their IR and Raman spectra were examined. In the luminescence spectrum of Eu2+, a series of low-intensity ...

2011-01-01

151

First investigations of complex formation of At(I) with phosphorous organic compounds

A research program has been initiated to screen and select electrolyte materials for use in steam electrolyzers in the 300-600/sup 0/C temperature range. Screening of a significant number of acid anhydrides, hydroxides, oxides, and phospates for their electrolytic conductivity properties is underway. Of the binary materials examined to date, only polymerized phosphoric acid, immobilized on an H/sup +/ substituted zeolite, shows promise. A substantial number of ternary compounds remain to be synthesized and evaluated.

1984-08-01

152

First investigations of complex formation of At(I) with phosphorous organic compounds

Reaction of At(I) with triphenylphosphine, triethylphosphite and tri-n-octylphosphine oxide was investigated in ethanolic solution by means of electromigration. A cationic complex with triphenylphosphine was identified being stable at pH = 1,9 in the concentration range of the ligand between c = 10{sup -5} to 10{sup -3} M. At a higher ligand concentration and at pH>2, the reduction effect of phosphine is superimposed on the complex formation. Complex formation is confirmed by ligand exchange reactions with Br{sup -} and I{sup -}. A comparatively weak complex is formed by triethylphosphite and At(I). No compound is formed by tri-n-octylphosphine oxide and At(I). (orig.).

1989-01-01

153

Application of the tracer technique to study on casting solidification

Reaction of At(I) with triphenylphosphine, triethylphosphite and tri-n-octylphosphine oxide was investigated in ethanolic solution by means of electromigration. A cationic complex with triphenylphosphine was identified being stable at pH = 1,9 in the concentration range of the ligand between c = 10"-"5 to 10"-"3 M. At a higher ligand concentration and at pH>2, the reduction effect of phosphine is superimposed on the complex formation. Complex formation is confirmed by ligand exchange reactions with Br"- and I"-. A comparatively weak complex is formed by triethylphosphite and At(I). No compound is formed by tri-n-octylphosphine oxide and At(I). (orig.).

154

Radioactive lead studies in the human

The results and techniques of radiographic study on solidification of iron and steel mould castings are described. The study was made to determine the causes of the mold castings defects. The liquid metal is either labelled in the ladle, or relabelled inside the mould in present time intervals. In the former case, the radioactive phosphorus is segregated in the last-solidifying casting locations, and in the latter, the radioactive phosphorous is distributed along the solid-liquid interface at the time of the next addition in turn. The solidification process parameters may be arrived at by the autoradiograms taken in the pipe-sensitive casting sections. Using these data it is possible to proceed to the proper modifications in the steel casting process.

155

A Novel Domperidone Hydrogel: Preparation, Characterization, Pharmacokinetic, and Pharmacodynamic Properties

The differing susceptibility of individuals to the toxic effects of chronic lead exposure has never been fully understood. As the major intake of lead in the human is from food and beverages, any variation between individuals of the quantity of lead absorbed from the gut, and of the distribution and excretion of this lead, may account for the differences in individual susceptibility. The food and beverages themselves may have an influence, and to investigate their effects on absorption, distribution and excretion of lead, experiments were performed on normal subjects using a short lived radionuclide of lead, "2"0"3Pb, and instruments generally available in Nuclear Medicine. Lead absorption between different individuals showed a wide variation when "2"0"3Pb was taken as a single dose between meals. Minerals were found to be mainly responsible for affecting absorption when one subject ingested "2"0"3Pb in control meals from which one dietary constituent at a time was omitted. Calcium and ...

156

{omega} meson production at the Time-Of-Flight spectrometer

The purpose of the present study was to prepare a novel domperidone hydrogel. The domperidone dispersion was prepared by the solvent evaporation method. The characteristics of domperidone dispersion...Full Text Available

2011-01-01

157

Zinc-air battery technology: Combination of mechanical and electrical recharge

No abstract prepared.

2002-03-01

158

X-ray production yield in standardized thick target PIXE

No abstract prepared.

2000-07-01

159

Wavepro : a new approach to the design of data processing work flows.

No abstract prepared.

2003-07-01

160

WATER AND MAGMA CAN MIX - A HISTORY OF THE CONCEPTS OF HYDROVOLCANISM

No abstract prepared.

2010-07-01

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

161

VO{sub 2}(B) as a cathode material for lithium battery

No abstract prepared.

2000-09-01

162

Track reconstruction in the hexagonal drift chamber at COSY-11

No abstract prepared.

2002-07-01

163

Theory of the spiral grooved thrust bearing with liquid or gas lubricant

No abstract prepared.

2002-03-01

164

The study on the methods of environmental monitoring using NAA

No abstract prepared.

2003-07-01

165

The devise of the neutron camera for convenient to confirm a sample position

No abstract prepared

1998-01-01

166

The Quality Characteristics of Beef Jerky prepared with Various Spices

No abstract prepared.

2000-10-01

167

The PISA experiment-spallation products identified by Bragg curve spectroscopy

Full Text Available

2004-10-01

168

The Lancashire coalfield, 1945-1972: the politics of industrial change

No abstract prepared.

2004-07-01

169

Testing of the high current implantator of nitrogen ions

No abstract prepared.

2001-06-01

170

Synthetic and bioengineered products in nuclear medicine and drug delivery

No abstract prepared

1999-10-01

171

Supragiottic laryngeal tumors: comparison of MSCT with surgery and histology

No abstract prepared.

1999-07-01

172

Study of quantum chemical calculation of actinide compounds

No abstract prepared.

2002-02-01

173

Study of cement matrices for the immobilization of evaporator concentrates

No abstract prepared

1998-01-01

174

Studies of High-K Isomers at TRIUMF-ISAC

No abstract prepared

1998-12-31

175

Structure studies of acidic galactan from Pomacea sp

No abstract prepared.

2004-03-04

176

Structure and inflammatory activity of acidic galactan from Pomacea sp

No abstract prepared.

2006-07-01

177

Solid-state NMR on polymers and quantum computing NMR

No abstract prepared.

2008-07-01

178

Solid-state NMR Techniques for Chemistry Research

No abstract prepared.

2005-07-01

179

Size-Fractionated Plutonium Isotopes in a Coastal Environment

No abstract prepared.

2000-09-01

180

Single-Molecule Dynamics of Conformational Changes in Flavin Adenine Dinucleotide

No abstract prepared.

2000-09-22

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

181

Selectivity of lithium isotopes on semicrystalline titanium (IV) phosphate

No abstract prepared.

2005-01-12

182

STRUCTURAL REORGANIZATION IN FILMS OF CELLULOSE DERIVATIVES IN THE PRESENCE OF COLLOIDAL PARTICLES

No abstract prepared.

2001-01-01

183

SC04 network security wrap-up.

No abstract prepared.

2004-01-01

184

Revised plan : recommended investigation at Navarre, Kansas.

No abstract prepared.

2005-02-01

185

Reactor control system using knowledge information

No abstract prepared.

2006-01-31

186

Radiation cryochemistry of cubic ice; Kriochemia radiacyjna lodu kubicznego

No abstract prepared

1998-01-01

187

Production of reducing oligosaccharides from galactan biopolymers

No abstract prepared

1998-12-31

188

Present status of containment integrity tests at NUPEC

No abstract prepared.

2006-07-01

189

Preparation of colloidal silver nanoparticles in poly(N-vinylpyrrolidone) by ?-irradiation

No abstract prepared.

2000-11-01

190

Preliminary calculations for MOX fuel critical experiments in TCA

Not Available

2008-09-01

191

Predictive maturity of computer models using functional and multivariate output

No abstract prepared.

2000-01-01

192

Power plants: future will be safe; Kraftwerke: Zukunft in Sicherheit

No abstract prepared.

2008-01-01

193

Ports close hauled; Haefen hart am Wind

No abstract prepared.

2006-08-15

194

Plasma nitriding of ASTM F138 biomaterial - corrosion study

No abstract prepared.

2010-11-15

195

Planning for an Integrated Program of Scientific Research on Global Environmental Change

No abstract prepared.

2006-07-01

196

Pipe whip transient analysis of the ignalina NPP.

No abstract prepared.

2003-07-08

197

Performance of the central calorimeter of the COSY-TOF detector

No abstract prepared.

2002-05-15

198

Pectins from medicinal plants and their anti-ulcer activity

No abstract prepared.

2002-03-01

199

PREPARATION METHOD OF POLYMER-SUPPORTED CHIRAL ZIRCONIUM CATALYST

No abstract prepared.

2008-07-01

200

J-STORE (Japan)

Full Text Available

2008-09-26

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

201

On the determination of the equilibrium melting temperature of polybutylene terephthalate (PBT)

On duality of the noncommutative supersymmetric Maxwell-Chern-Simons theory

No abstract prepared.

2004-07-01

202

Nuclear safety and international governance. Russia and Eastern Europe

No abstract prepared.

2008-07-01

203

New technologies for managing oil field wastes.

No abstract prepared

1999-06-01

204

Neutron activation analysis of ultra-trace elements. 2

No abstract prepared.

2000-10-25

205

Monitoring of the relative beam polarization at COSY-11

No abstract prepared

1998-01-01

206

Mobile Smart Meter; Mobile Smart Meter

No abstract prepared.

2002-03-01

207

Migration behavior of trace elements with geothermal sources

No abstract prepared.

2010-06-15

208

Microorganisms elimination in antiquity paper by gamma irradiation

No abstract prepared

1998-01-01

209

Metal dusting induced pitting in Alloy 800.

No abstract prepared.

2002-07-01

210

Mechanisms behind the rise and fall of sideflow at SIS energies

NO abstract prepared.

2005-01-01

211

Measurement of crack growth rate of magnesium alloy AZ31

No abstract prepared.

2002-07-01

212

MECHANICAL DESIGN OF THE SPALLATION NEUTRON SOURCE COUPLED CAVITY ACCELERATOR

No abstract prepared.

2005-07-01

213

Learning from Europe; Lernen von Europa

No abstract prepared.

2001-06-01

214

Large interaction of cytochrome-c with cardiolipin/DPPC vesicles by SAXS

No abstract prepared.

2010-09-15

215

LOS ALAMOS PLUTONIUM FACILITY WASTE MANAGEMENT SYSTEM

No abstract prepared.

2008-11-15

216

Kevlar and carbon composite body armor - analysis and testing.

No abstract prepared.

2000-01-01

217

Investigation of the a{sub 0}{sup +}(980) resonance at ANKE

No abstract prepared.

2005-07-01

218

International Workshop of the Physics of Compressible Turbulent Mixing

No abstract prepared.

2002-03-01

219

Influence of irradiation on thermally stimulated current in PEEK

No abstract prepared.

2001-11-28

220

Induction of self-compatible buckwheat by ion beams

No abstract prepared

1998-01-01

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

221

InP-quantum dots in AlGaInP

No abstract prepared.

2003-03-01

222

Implementation of a new data acquisition system at COSY-TOF

No abstract prepared.

2006-07-01

223

Hydrogen Systems Analysis, Education, and Outreach Activities

No abstract prepared.

2002-03-01

224

Heat transfer augmentation in channels with porous copper inserts.

No abstract prepared.

2000-02-02

225

Gluing Feynman diagrams in NDIM: insights into the three-point vertex

No abstract prepared.

1998-05-19

226

Geothermal Heat Pump Design Tool Benchmarking

No abstract prepared.

2008-07-01

227

Formation of Stable Chlorinated Hydrocarbons in Weathering Plant Material

No abstract prepared.

2000-08-01

228

Fly Ash Amendments Catalyze Soil Carbon Sequestration

No abstract prepared.

2005-08-22

229

First experiments with the Rossendorf Si-ball RoSiB

No abstract prepared.

2003-09-15

230

Final Report - Summary of Executive Policy Forum on Electricity Restructuring

No abstract prepared

1999-10-01

231

Fast Flux Test Facility (FFTF) Shutdown Activities

No abstract prepared.

2001-04-01

232

Fast Flux Test Facility (FFTF) Background & Status

No abstract prepared.

2001-06-01

233

Experimental and numerical study of colloid transport in a single fracture.

No abstract prepared.

2001-06-01

234

Eta-nucleus final state interaction studies

No abstract prepared.

2005-02-01

235

Eta-nucleus bound state study and the detector ENSTAR

No abstract prepared.

2002-03-01

236

Estimation of the radiation damages of the Uppsala spectator detector

No abstract prepared.

2002-03-01

237

Epigenetic changes accompanying human mammary epithelial cell Immortalization

No abstract prepared.

2002-03-01

238

Electromagnetic excitations in nuclei: From photon scattering to photo-dissociation

No abstract prepared.

2000-10-03

239

Efficiency of the second scintillator plane of the ANKE forward detector

No abstract prepared.

2006-07-01

240

Determination of the ANKE forward detector MWPC efficiency

No abstract prepared.

2002-03-01

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

241

DENSITY ANOMALIES IN THIN LIQUID FILMS OF HYDRIDE FUNCTIONAL SILOXANES

No abstract prepared.

2002-03-01

242

Content and distribution of hydrogen in anodic alumina films

No abstract prepared.

2002-01-01

243

Conserved currents and dualities in a covariant phase-space dynamics

No abstract prepared

1998-01-01

244

Computer model improves real-time management of water quality

No abstract prepared.

2007-07-01

245

Complex geometry, duality and non-perturbative structures in superstring theory

No abstract prepared.

1999-07-21

246

Combinatorial Spray-Based Synthesis of PEM FC Electrocatalysts

No abstract prepared.

1998-07-01

247

Close-to-threshold {phi} production at COSY-11

No abstract prepared.

2003-11-02

248

Chemical solution deposition of PLZT films on base metal foils.

No abstract prepared.

2002-03-01

249

Characterization of crystalline structure of electrodeposited ZnO thin films

No abstract prepared.

2003-11-07

250

CATALYSTS FOR HIGH CETANE ETHERS AS DIESEL FUELS

No abstract prepared.

2010-07-01

251

Biological Surface-Active Substance

No abstract prepared.

1999-09-01

252

International Science & Technology Center (ISTC)

Development of biological preparation with surfactant activity

253

Biogas in the natural gas grid; Biogas im Erdgasnetz

Arabinogalactans isolated from the medicinal plant Maytenus ilicifolia

No abstract prepared.

2007-03-15

254

An X-ray and neutron reflectometry study of multilayers

No abstract prepared.

2006-07-01

255

Advanced Direct Liquefaction Concepts Program Phase II

No abstract prepared.

1998-09-01

256

Acidic heteroxylans from medicinal plants and their antiulcer activity

No abstract prepared.

2002-11-30

257

ASC HPEMS Xyce circuit simulator : linear solver technology.

No abstract prepared.

2008-07-01

258

A review of in-situ chemical oxidation and heterogeneity

No abstract prepared.

2004-06-01

259

A review of Monte Carlo criticality calculations - convergence, bias, statistics

No abstract prepared.

2003-02-03

260

A precision experiment to measure the {eta}-meson mass

No abstract prepared.

2008-01-01

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

261

A Technology Roadmap for Generation IV Nuclear Energy Systems

No abstract prepared.

2002-03-01

262

A Study on the Preparation of Tritium Luminous Compound

No abstract prepared.

2002-12-01

263

A Guide to Experimental Elementary Particle Physics Literature 1994-1998

Full Text Available

1972-12-01

264

14 MeV neutron irradiation effects on window materials

No abstract prepared.

1999-10-01

265

Preparation of carrier-free yttrium-88 from strontium target by solvent extraction

No abstract prepared

1998-01-01

266

Abrasion problems in coal preparation

... carrier-free isotopes chemical preparation gamma spectra isotope production

267

LS&T and CMS FY 2004 Feasibility Proposal 04-FS-006 - Ceramic Laser Materials Interim Report - June 8, 2004

Lining of fused cast basalt tiles is recommended for various pieces of equipment constituting a coal preparation plant.

1981-01-01

268

Densification behavior and properties of Y_2O_3-containing #alpha#-SiAlON-based composites

The purpose of this memo is to give an update on our work on ceramic laser materials--feasibility proposal 04-FS-006. Transparent ceramic materials have several major advantages over single crystals in laser applications including, ease and robustness of manufacturing, large apertures, design flexibility, fracture toughness, high activator concentrations, uniformity of composition, no residual stress, and others discussed in the proposal. After a decade of working on making transparent YAG:Nd in 1995 Japanese workers demonstrated samples for the first time that performed as well in lasers as their single crystal counterparts. Since then several laser materials have been made and evaluated. For these reasons, developing ceramic laser materials is the most exciting and futuristic materials topic in today's major solid-state laser conferences. The highlights and executive summary of our work to date are: (1) Ordered a slab of transparent YAG:Nd from Konoshima Chemical Co. for ...

2005-02-03

269

Production and Purification of UO_3 from rock phosphate deposits and its characterization

Different SiAlON composites based on #alpha#'-SiAlON are investigated, with respect to the phase relationships, densification behavior, and mechanical properties. The compositions are located on a phase-diagram line parallel to the Si_3N_4-Y_2O_3#centre dot#9AlN compound in the Si_3N_4-SiO_2-AlN-Al_2O_3-Y_2O_3-YN system. Analysis of the reaction sequences shows that the formation of the composites is associated with the transient appearance of Y_4Al_2O_9 (YAM), yttrium-aluminum-garnet (YAG), melilite, and a nitrogen-rich liquid phase. The small shift of compositions on the Si_3N_4-Y_2O_3#centre dot#9AlN compound phase-diagram line toward the Al_2O_3-rich side offers the advantage of a higher sinterability and the removal of the melilite phase from a wide range of compositions containing #alpha#'-SiAlON and polytypes. The #alpha#'/#beta#'-SiAlON composites show better mechanical properties in comparison to pure #alpha#'-SiAlON and composites of #alpha#'-SiAlON and ...

270

Two-step biodiesel production from Calophyllum inophyllum oil: Optimization of modified b-zeolite catalyzed pre-treatment

This study was carried out mainly to produce uranium trioxide (UO_3), matching standard commercial specification from rock phosphate deposits in Uro and Kurun at eastern part of the Nuba Mountains. A simplified hydrometallurgical procedure has been adopted for production of yellow cake from the ore. The powdered ore sample was leached with concentrated H_2SO_4 acid with and without addition of KCIO_3 as an oxidant. The crude yellow cake was precipitated from the resulting green solution of phosphoric acid as Na_2U_2O_7 and (NH_4)_2U_2O_7 and subsequently purified by TBP extraction (tributylphosphate) and hydrogen peroxide as UO_4.2H_2O. TBP purified product was dried and calcined to UO_3 whereas UO_4.2H-2O was dried and reduced to UO_3 by Na_2S_2O_3. Prior to precipitation of crude yellow cake, Fe in the phosphoric acid solution was precipitated using magnesia. Elemental analysis has shown that the ore is rich in Ca and deficient in elements of ...

2005-03-01

271

British Library Electronic Table of Contents (United Kingdom)

In this study, a two-step process was developed to produce biodiesel from Calophyllum inophyllum oil. Pre-treatment with phosphoric acid modified b-zeolite in acid catalyzed esterification process preceded by transesterification which was done using conventional alkali catalyst potassium hydroxide (KOH). The objective of this study is to investigate the relationship between the reaction temperatures, reaction time and methanol to oil molar ratio in the pre-treatment step. Central Composite Design (CCD) and Response Surface Methodology (RSM) were utilized to determine the best operating condition for the pre-treatment step. Biodiesel produced by this process was tested for its fuel properties.

2011-01-01

272

Transient enhanced diffusion in B/sup +/ and P/sup +/ implanted silicon

THE EFFECT OF PROCESS VARIABLES FOR PRODUCTION OF COBIA (RACHYCENTRON CANADUM) SKIN GELATIN HYDROLYSATES WITH ANTIOXIDANT PROPERTIES

The authors report the transient enhanced diffusion of supersaturated phosphorous in ion-implanted SPE grown Si. Precipitation proceeds rapidly to a metastable SiP phase, which can be converted to an orthorhombic form or re-dissolved by subsequent heat treatment. The effects are strongly temperature dependent, and consistent with the trapped interstitial model. The behavior of different dopants follow their relative interstitialcy diffusion coefficients. The results suggest that ion implantation induced point defects dominate over thermally activated point defects during low temperature and certain rapid thermal processing, controlling dopant deactiviation and diffusion in crystalline or amorphous silicon, and can also affect the SPE growth rate.

273

British Library Electronic Table of Contents (United Kingdom)

Abstract Acid-treated cobia (Rachycentron canadum) skin was extracted in a retort (121C) to obtain retorted skin gelatin hydrolysates (RSGHs) containing antioxidant peptides with noticeable antioxidant properties. To improve the antioxidant activity of cobia RSGHs, five processing factors including alkali concentration, alkali pretreatment time, phosphoric acid concentration (PC), water/skin ratio (WS) and retorting time (RT) in RSGH production were screened using a fractional factorial design to identify critical factors. It indicated that PC, WS and RT had significant effects on ,-diphenyl--picrylhydrazyl (DPPH) scavenging by RSGHs. Subsequently, the optimization of PC, WS and RT on the DPPH scavenging of RSGHs was studied using a central composite design to collect data that resulted in...

2011-01-01

274

Synthesis of ceramic powders by novel microwave-hydrothermal processing

Real time neutron radiography using a Lixi neutron imaging device

Microwave-hydrothermal processing was compared with conventional hydrothermal processing in the crystallization of hematite from 1M ferric nitrate and hydroxyapatite from calcium oxide and phosphoric acid. Microwave-hydrothermal processing led to the crystallization of hematite while convention-hydrothermal process led to the crystallization of a mixture of goethite and hematite under the same temperature conditions. Thus the crystallization of hematite which is the stable iron oxide phase at high temperatures has been catalyzed by microwaves. Microwave-hydrothermal processing also led to highly crystalline hydroxyapatite powders compared to the conventional hydrothermal processing which also points to the catalytic role of microwaves. The microwave induced effects may be attributed to the generation of localized high temperatures at the reaction sites which enhance reaction rates.

1996-06-01

275

Real time neutron radiography using a Lixi neutron imaging device

A real time neutron radiography system has been developed at the University of Michigan Phoenix Memorial Laboratory (PML) and has recently been used to test the imaging capabilities of a neutron imaging device developed by Lixi, Inc. of Downers Grove, Illinois. This device uses an input phosphor that is high in gadolinium to generate a light image which is then sent through an intensifier stage to provide images that can be viewed by eye, video camera, or standard 35 mm camera. It was determined that this device provides images of much higher resolution and sensitivity than those obtained with the imaging system currently being used at PML. Using computerized image enhancement techniques, the images obtained with the Lixi neutron imaging device can then be further enhanced or processed to obtain quantitative information on the object being imaged.

1986-01-15

276

Portal localization images using computed radiography for high-energy electron beam therapy

A real time neutron radiography system has been developed at the University of Michigan Phoenix Memorial Laboratory (PML) and has recently been used to test the imaging capabilities of a neutron imaging device developed by Lixi, Inc. of Downers Grove, Ill. This device uses an input phosphor that is high in gadolinium to generate a light image which is then sent through an intensifier stage to provide images that can be viewed by eye, video camera, or standard 35 mm camera. It was determined that this device provides images of much higher resolution and sensitivity than those obtained with the imaging system currently being used at PML. Using computerized image enhancement techniques, the images obtained with the Lixi neutron imaging device can then be further enhanced or processed to obtain quantitative information on the object being imaged. (orig.).

1986-01-01

277

Minimizing radiation dose to patient and staff during fluoroscopic, nasoenteral tube insertions

Portal localization images for high-energy electron beam therapy are necessary to confirm the treatment field by comparing them with a simulation image obtained before treatment or portal verification images after treatment. In this study, portal localization images were acquired using the computed radiography (CR) system and bremsstrahlung X-rays generated in the electron beam irradiations. All images obtained with phantom and the irradiations of in the electron energy of 8, 10, 12 and 15 MeV were feasible for clinical use. The CR system used in this study included general diagnostic imaging cassette and storage phosphor plate, but none of other special devices. The system can usually supply portal localization images, which maintains the quality assurance of high-energy electron beam therapy. (author)

2002-09-01

278

Manufacturing of Austenitic Stainless Steel-Zirconia Composites by Infiltration

Since the fluoroscopic image during nasoenteral tube placements is used for guidance and not for diagnosis, a lower contrast image with increased quantum mottle can be easily tolerated. The three methods to reduce the radiation dose rate investigated consisted of removing camera from the image intensifier output phosphor, and setting the fluoroscopic mA to the minimum value so that the kVp could be maximized. Fluoroscopic frozen video frames of a clinical tube insertion comparing the images with and without the dose-saving techniques are presented. Measurements of the radiation dose rates using a Plexiglas phantom show that the dose for patient and staff during fluoroscopic-guided nasoenteral tube placements can be reduced by over a factor of 10 without significantly adversely affecting the actual placement procedure. (author).

1992-02-01

279

British Library Electronic Table of Contents (United Kingdom)

Abstract Within the framework of the CRC 799 -TRIP-Matrix-Composites- at the TU Bergakademie Freiberg new composite materials consisting of TRIP steel and zirconium dioxide ceramics are designed in a powder route and a casting route. To manufacture faultless samples basic investigations of the feeding and infiltration behaviour within macro porous ceramics such as filters were needed. The effects of bottom pouring and top pouring were investigated as well as the effects of different preheating temperatures, contents of phosphorous in the steel and flow trough rates. Bottom pouring corrupts the feeding mainly of filters with high ppi (pores per inch). Top pouring improves the feeding, but generates inhomogeneous infiltration qualities, which can affected and enhanced by a increasing preheat...

2011-01-01

280

Electrodeposition and corrosion resistance of Ni-W-B coatings

Development of a pelleted waste form for high-level alumina wastes

A ternary nickel-base alloy Ni-W-B has been developed for surface corrosion and wear resistance to replace chromium plating, which uses environmentally hazardous solutions. The deposition conditions used an alkaline bath and insoluble anodes. The as-deposited alloy typically contains 40 wt% W and 1 wt% B and has an amorphous or partially amorphous structure. These deposits compare favorably with hexavalent chromium deposits in throwing power, color uniformity, and reflectivity. The corrosion resistance of Ni-W-B alloy was compared with hexavalent chromium and electroless nickel deposits in a variety of acids, including hydrochloric, sulfuric, fluoroboric, and phosphoric. In all cases, best results were obtained with the Ni-W-B deposits.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

281

DEGRADED TBP SOLVENT REGENERATION TECHNOLOGY USING BUTYLAMINE AS A SOLVENT WASHING TO REDUCE SOLID SALT WASTE

A formulation to pelletize simulated high-level ICPP alumina waste calcine was developed. The pellets are formed on a 41-cm-diameter disc pelletizer using 5% bentonite, 2% metakaolin, and 5 wt % calcium hydroxide as a solid binder and a solution of 7M phosphoric acid and 4M nitric acid as a liquid binder. After drying and heat treatment at 800/sup 0/C for 2 hours, the average crush strength of the pellets is 3.9 MPa and the pellets have a leach resistance of 10/sup -3/ g/cm/sup 2//day, based on Soxhlet leaching for 48 h at 95/sup 0/C with distilled water.

1980-09-01

282

Chemically bonded phosphate ceramics : part III : reduction mechanism and its application to iron phosphate ceramics.

Normal butylamine compounds are studied as salt-free wash reagents for degraded solvent used in PUREX process in spent fuel reprocessing. The solvent wash tests were carried out with two types of butylamine compounds, n-butylamine oxalate and n-butylamine bicarbonate, by counter-current mode using a small size mixer-settler composed of two 4-stage wash steps. Di-n-butyl phosphoric acid (HDBP), the main degradation product from TBP, was removed from real degraded solvent with decontamination factor of 2.5 {approx} 7.9. The study on electrolytic decomposition of butylamine compounds was also conducted for waste treatment.

2003-02-27

283

Chemical plant factors affecting resistance in sugarcane in against Scirpophaga Nivella f

In this, the last of a series of three papers, we discuss a method of forming iron phosphate ceramics by a reduction process. We report the formation of iron oxide ceramics by reducing hematite with iron in a phosphoric acid solution. The reaction results in a rapid-setting ceramic (at room temperature) with a compressive strength of 3700 psi and a density of 1.7 g/cm{sup 3}. Although the exact mineral form of the binder is difficult to determine because it is mostly amorphous and hence is not amenable to X-ray diffraction analyses, this material is expected to consist of iron hydrophosphates. The reduction process is very useful in recycling several industrial wastes that are rich in hematite, including iron mine tailings, red mud (a caustic waste from the alumina industry), and machining swarfs. Formation of ceramics with red mud and swarfs is also discussed.

2003-11-01

284

Analyses of uranium in some phosphate commercial products

The study was conducted during 2000 to determine the role of various chemical plant factors viz., total minerals, nitrogen, fat contents, carbohydrate, macro an micro nutrients in the leaves of five genotypes of sugarcane i.e., BF-162, SPSG-26, L-118, CP-43/33 and CP-72/2086 by correlating the infestation of top borer, Scirpophaga Nivella F. at tillering stage. None of the genotype was found completely resistant to the pest. CP-43/33 and BF-162 proved susceptible and resistant varieties, respectively. Total mineral, manganese and copper contents did not show significant correlation with the pest infestation, whereas nitrogen, potassium, calcium, magnesium and ferrous contents played a positive and significant role. Phosphorous, carbohydrates, fats and zinc contents played a significant and negative effect on the pest infestation at tillering stage. (author)

285

FFTF operations procedures preparation guide. Revision 2

The raw materials used in manufacturing of phosphate fertilizer products were derived from rocks. Rocks contain a remarkable of natural radioactivity. Uranium and phosphorous were originally initiated at the same time of the initiated rocks. The purpose of this research is to investigate solubility of uranium phosphate species at the phosphate fertilizer samples, samples including; raw phosphate material, single super phosphates (SSP) granules and powdered, triple super phosphates (TSP) and phosphogypsum samples were obtained from Abu-Zabal factory in Egypt. Solubility of uranium phosphate species was estimated. It was found that, less than half of the uranium phosphate species are soluble in water. The soluble uranium may be enter into the food chains by plant. Therefore, restriction should be done in order to limit contamination of land and the public.

2004-02-24

286

Thermoluminescence emission of X-irradiated Eu{sup 2+} doped KBr single crystals

The Guide is intended to provide guidelines for the initial preparation of FFTF Operating Procedures. The Procedures Preparation Guide was developed from the plan presented and approved in the FFTF Reactor Plant Procedures Plan, PC-1, Revision 3.

1976-12-01

287

Thermoluminescence emission of X-irradiated Eu"2"+ doped KBr single crystals

In this paper we discuss the results of thermoluminescence (TL) studies carried out on freshly quenched crystals of KBr doped with {approx} 50 ppm of Eu{sup 2+} ions which were X-irradiated at room temperature. The TL glow curve of this phosphor material consists of three glow peaks at 355, 376 and 398 K whose intensities increased as a function of X-irradiation time. The TL glow peaks were analyzed by the total curve-fitting method in order to obtain the characteristic parameters; activation energy, pre-exponential factor and kinetic order. The spectral character of the emission recorded during thermoluminescence was found to be the same for all glow peaks and consists of a broad band centered at {approx} 420 nm. It is proposed that the model of the TL process most consistent with our experimental results is one in which the Eu{sup 2+} impurity acts as an electron trap during the irradiation process and that the radiation induced center (partner of an center) and ...

1996-12-31

288

Radiant emittance of xenon positive column discharges

In this paper we discuss the results of thermoluminescence (TL) studies carried out on freshly quenched crystals of KBr doped with #approx# 50 ppm of Eu"2"+ ions which were X-irradiated at room temperature. The TL glow curve of this phosphor material consists of three glow peaks at 355, 376 and 398 K whose intensities increased as a function of X-irradiation time. The TL glow peaks were analyzed by the total curve-fitting method in order to obtain the characteristic parameters; activation energy, pre-exponential factor and kinetic order. The spectral character of the emission recorded during thermoluminescence was found to be the same for all glow peaks and consists of a broad band centered at #approx# 420 nm. It is proposed that the model of the TL process most consistent with our experimental results is one in which the Eu"2"+ impurity acts as an electron trap during the irradiation process and that the radiation induced center (partner of an center) and the V_k ...

289

Phosphor plasters of CaSO{sub 4}:Dy on the courtyard wall of Djehuty's tomb (Luxor, Egypt)

An embodiment of a mercury-free fluorescent lamp combines a low pressure rare gas discharges with a phosphor having a quantum efficiency grater than one. The choice of the rare gas depends on a number of factors, one of which is the resonance transition energy. Less demand is placed the quantum efficiency of the phosphor for a lower energy resonance photon. Xenon has the lowest energy resonance transition of the stable rare gases at 8.5 eV (147 nm) and thus is a good candidate to study. The usefulness of a xenon-based discharge depends on the radiant emittance of the discharge at the resonance wavelength of 147 nm. The radiant emittance from a low pressure xenon positive column discharge is measured using two independent techniques. The first relies on the measurement of the resonance level density using absorption techniques. The effective decay rate of the resonance level is calculated using radiation trapping theory. The product of this ...

1994-12-31

290

Energy transfer in Y3Al5O12:Ce3+, Pr3+ and CaMoO4:Sm3+, Eu3+ phosphors

The X-ray diffraction (XRD) and environmental scanning electron microscopy (ESEM) analyses of plasters collected from the courtyard walls of Djehuty's tomb show anhydrite, calcite, dolomite, quartz, alkali feldspars and accessorial amounts of halite and illite. The external outer bed is mainly composed by anhydrite, since the original hydrous phases of gypsum plaster were desiccated during thirty centuries in the dry land environment of the Luxor area, under low relative humidity and high temperatures. The luminescence analyses by thermoluminescence (TL) and cathodoluminescence (CL) demonstrate as one plaster sample (m8), i.e., 95% anhydrite, displays a gigantic TL emission of 33 555 a.u. and a SEM/CL emission of 2319 a.u. maxima peak. The spectra CL also exhibits a 484 nm peak attributable to the classic {sup 4}F{sub 9/2}{yields}{sup 6}H{sub 15/2} transition circa 490 nm of Dy{sup 3+} and a 573 nm emission of Dy{sup 3+} masked in a broad emission band centered at 620 nm. The ...

2008-02-15

291

A comparison of x-ray detectors for mouse CT imaging

Non-radiative energy transfers (ET) from Ce3+ to Pr3+ in Y3Al5O12:Ce3+, Pr3+ and from Sm3+ to Eu3+ in CaMoO4:Sm3+, Eu3+ are studied based on photoluminescence spectroscopy and fluorescence decay patterns. The result indicates an electric dipole-dipole interaction that governs ET in the LED phosphors. For Ce3+ concentration of 0.01 in YAG:Ce3+, Pr3+, the rate constant and critical distance are evaluated to be 4.5x10-36 cm6 s-1 and 0.81 nm, respectively. An increase in the red emission line of Pr3+ relative to the yellow emission band of Ce3+, on increasing Ce3+ concentration is observed. This behavior is attributed to the increase of spectral overlap integrals between Ce3+ emission and Pr3+ excitation due to the fact that the yellow band shifts to the red spectral side with increasing Ce3+ concentration. In CaMoO4:Sm3+, Eu3+, Sm3+-Eu3+ transfer occurs from 4G5/2 of Sm3+ to 5D0 of Eu3+. The rate constant of 8.5x10-40 cm6 s-1 and the critical transfer distance of 0.89 ...

2011-03-01

292

There is significant interest in using computed tomography (CT) for in vivo imaging applications in mouse models of disease. Most commercially available mouse x-ray CT scanners utilize a charge-coupled device (CCD) detector coupled via fibre optic taper to a phosphor screen. However, there has been little research to determine if this is the optimum detector for the specific task of in vivo mouse imaging. To investigate this issue, we have evaluated four detectors, including an amorphous selenium (a-Se) detector, an amorphous silicon (a-Si) detector with a gadolinium oxysulphide (GOS) screen, a CCD with a 3:1 fibre taper and a GOS screen, and a CCD with a 2:1 fibre taper and both GOS and thallium-doped caesium iodide (CsI:Tl) screens. The detectors were evaluated by measuring the modulation transfer function (MTF), noise power spectrum (NPS), detective quantum efficiency (DQE), stability over multiple exposures, and noise in reconstructed CT images. The a-Se ...

2004-12-07

293

United ttsCos ur

The International Reference Preparation of Erythropoietin*

... floppy diskette message preparation - JANAP 128 and DD173 message preparation ... S including JANAP 128, DD173, and ACP 126. ...

2011-05-05

294

SOLID STATE RESEARCH OF THE APPLIED PHYSICS ...

The WHO Expert Committee on Biological Standardization authorized the National Institute for Medical Research to establish an International Reference Preparation of Erythropoietin on the basis of the...Full Text Available

1966-01-01

295

Preparation of covalently modified organic-inorganic composite nanoparticles and their interfacial electron transfer researches

... 10 TIN TELLURIDE Preparation of Tin Telluride Single Crystals ..... 12 ... TIN TELLURIDE Preparation of Tin Telluride Single Crystals ...

1962-07-16

296

Method for preparing thermally cleavable surfactants without deprotonation

Preparation of covalently modified organic-inorganic composite nanoparticles and their interfacial electron transfer researches

1998-01-01

297

Grit-Blast/Silane (GBS) Aluminum Surface Preparation for ...

The present invention describes surfactants of formula (I), ##STR00001## wherein R, R.sub.N, and m are defined herein, processes for their preparation, and methods for their decomposition.

2008-05-27

298

Exploration of Cold Extrusion for the Preparation of Enteric Minitablets of Isoniazid

... GRIT-BLAST/SILANE (GBS) ... GRIT-BLAST/SILANE (GBS) ALUMINUM SURFACE PREPARATION FOR STRUCTURAL ADHESIVE BONDING 5b. ...

2003-04-30

299

Defense.gov News Article: Task Force Prepares for Horn of ...

The objective of the present work was to formulate the enteric minitablets of isoniazid by cold extrusion method. The minitablets were prepared using isoniazid, hydroxylpropylmethylcellulose phthalate...Full Text Available

2008-05-01

300

Advanced Technological Education Program: 1999 Awards and Activities

... After the task force deploys, Joint Forces Command interacts ... and what needs tweaking to better prepare future headquarters staffs, Mungus ...

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

301

{sup 13}C-NMR signal enhancement by using parahydrogen induced polarization (PGIP) and appropriate pulse sequences

... By developing and disseminating educational materials and curricula, supporting the preparation and ... education, such as curriculum or educational materials development, faculty or teacher preparation ...

302

Wrap-around pressure mitigation using Kevlar safety netting in high explosive processing facilities

No abstract prepared.

2009-07-01

303

Vibration tests on nuclear power station stacks equipped with structural control oil dampers

No abstract prepared.

2008-01-01

304

Using evidence-based logic to design investigations for clay barrier systems

No abstract prepared.

2009-07-01

305

Usefulness of CT colonography in the preoperative evaluation of patients with distal occlusive colorectal carcinoma

No abstract prepared.

2002-07-01

306

Use of cozilat preparation as enteral nutrition for patients with late radiation injuries of colon

No abstract prepared.

2002-02-15

307

Ultraviolet dosimetry characterization from calcium doped borate glass-ceramic

Short note.

1988-06-28

308

Twin Cities Army Ammunition Plant soil vapor extraction system : a post-audit modeling study.

No abstract prepared.

2006-07-01

309

Transformation of sulfur-containing organometallic complexes by free radicals formed in radiolysis of organic compounds

No abstract prepared.

2000-11-27

310

The structure of the 4.743 MeV state in {sup 88}Sr

No abstract prepared

1998-01-01

311

The sputtering deposition - CdTe/(Si, Gaas, Al{sub 2}O{sub 3})

No abstract prepared

1999-05-01

312

The progression from ionic to covalent bonding in disordered systems as studied by using neutron diffraction

No abstract prepared

1996-12-31

313

The non-equivalence between non-Abelian self-dual and Yang-Mills-Chern-Simons models

No abstract prepared

1998-12-31

314

The interaction zone of a {gamma}{gamma} collider at TESLA; Die Wechselwirkungszone eines {gamma}{gamma}-Colliders bei TESLA

No abstract prepared.

2008-07-01

315

The human melanocyte: A model system to study the complexity of cellular aging and transformation in non-fibroblastic cells

No abstract prepared.

2003-07-01

316

The half-life of {sup 101}Mo and {sup 101}Tc {beta}{sup -} decay

No abstract prepared.

2002-05-23

317

The coordination chemistry of technetium and rhenium and applications to nuclear medicine. Final report

No abstract prepared.

2008-07-01

318

The Structures and Optical Spectra of Hydrated Transplutonium Ions in Solid State and in Solution

No abstract prepared.

1996-12-31

319

Testing a passive revegetation approach for restoring coastal plain depression wetlands

No abstract prepared.

2007-06-01

320

Temporal Fluctuations of Fluorescence Energy Transfer between TwoDyes Conjugated to a Single Protein

No abstract prepared.

2006-01-01

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

321

TEMPERATURE-DEPENDENT DIELECTRIC MEASUREMENTS OF POLYACRYLONITRILE FIBERS DURING AIR OXIDATION (Paper)

No abstract prepared.

1999-01-04

322

Synthesis and structure of the (tetrahydroxy)oligosiloxane [(tBuO)3SiOSi(OH)2]2O

No abstract prepared.

2004-01-26

323

Study on the ageing process of the proportional counters; Badanie mechanizmu starzenia licznikow proporcjonalnych

No abstract prepared.

2000-01-25

324

Study of the Form Factor of the Proton in the Timelike Region for Large Momentum Transfers

No abstract prepared

1998-12-31

325

Study of nuclear fusion materials making use of ion irradiation and ESR microscope

No abstract prepared.

2001-01-01

326

Studies of {eta} production in proton proton collisions with the time of flight spectrometer

No abstract prepared

1998-01-01

327

Structure beyond Bragg : study of V{sub 2}O{sub 5} nanotubes.

No abstract prepared.

2002-03-01

328

Steam turbines for biomass power plants; Dampfturbinen fuer Biomasse-Kraftwerke

No abstract prepared.

2004-02-01

329

Status of the analysis of the (vector)pp {yields} pp{gamma} reaction channel

No abstract prepared.

2003-11-01

330

Stability of the ClO dimer; Stabilitaet des ClO-Dimers

No abstract prepared.

2002-03-01

331

Spent fuel sabotage aerosol ratio test program:status update, November 2004.

No abstract prepared.

2006-07-01

332

Spent fuel sabotage aerosol ratio test program : progress & status, May 2004.

No abstract prepared.

2004-11-01

333

Spent fuel sabotage aerosol ratio program : status, May 2005.

No abstract prepared.

2004-05-01

334

Speciation of metals in medicinal plants under different stress condition by HPLC-ICP-MS

No abstract prepared.

2005-05-01

335

Small Angle Neutron Scattering and Calorimetric Studies of Large Unilamellar Vesicles of the Phospholipid Dipalmitoylphosphatidylcholine

No abstract prepared.

2005-07-01

336

Slide Rule for Rapid Response Estimation of Radiological Dose from Criticality Accidents

No abstract prepared.

1999-03-01

337

Singlet-to-triplet ratio in the deuteron breakup reaction pd{yields}pnp at 585 MeV

No abstract prepared.

1999-06-03

338

Shortwave transport in the cloudy atmosphere by anomalous/levy diffusion: New diagnostics using Forte Data

No abstract prepared.

2002-03-01

339

Short-term radon concentration measurements in Dwellings in the metropolitan region of Belo Horizonte, Brazil

No abstract prepared.

2000-10-01

340

Search for magnetic rotation in {sup 202}Pb and {sup 203}Pb

No abstract prepared.

2010-07-01

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

341

Search for a quasi-bound {eta}-{sup 3}He state with the COSY-TOF spectrometer

No abstract prepared.

2000-07-24

342

SYNCHROTRON X-RAY DIFFRACTION STUDY OF THE STRUCTURE AND DEHYDRATION BEHAVIOR OF TODOROKITE

No abstract prepared.

2002-03-01

343

STRUCTURAL CHARACTERIZATION OF THIN HYDROXYPROPYLCELLULOSE FILMS. X-RAY REFLECTIVITY STUDIES

No abstract prepared.

2003-01-01

344

SODIUM HEAT PIPE MODULE TEST FOR SAFE-30 REACTOR PROTOTYPE

No abstract prepared.

2004-01-01

345

SAXS studies of the injection molding effects on the nanostructure of polyesters. I. Polybutylene terephthalate (Pbt)

No abstract prepared.

2000-10-01

346

Rupture of anomalous composite particles prepared by seeded emulsion polymerization in aging period

No abstract prepared.

2004-07-01

347

Relationship between HF permittivity and microscopic fluid distribution in clayey geo-materials

Not Available

1980-07-01

348

Reaction-diffusion effects on species mixing rates in turbulent premixed methane-air combustion

No abstract prepared.

2002-07-01

349

Radionuclide X-ray fluorescence method of determination of toxic metal content in environment objects

No abstract prepared.

2009-06-01

350

Radiative processes as a condensation phenomenon and the physical meaning of deformed canonical structures

No abstract prepared.

2004-07-01

351

Radiation processing used in forestry in Thailand

No abstract prepared.

2008-07-01

352

RESPONSE TO THE CHALLENGES OF TECHNOLOGICAL CHANGE ON A SAFEGUARDS EQUIPMENT SUPPORT ORGANIZATION: DESIGN OF A PERFORMANCE-BASED TRAINING PROGRAM.

A summary is presented of research being carried out in Thailand on the preparation of irradiation-impregnated wood.

1981-01-01

353

Quality Assurance in Safeguards: Indonesian Document Control and Records Management System

No abstract prepared.

2000-07-16

354

Pulsations in the compression chamber, a potential cause of damage?; Pulsationen im Verdichtungsraum - eine potentielle Schadensursache?

No abstract prepared.

2010-07-01

355

Protein-protein interactions and structural analysis of citrus proteins involved in transcriptional control during citrus canker disease

No abstract prepared.

2005-05-01

356

Properties of Polyacrylonitrile/Single Wall Carbon Nanotube Composite Films Prepared in Nitric Acid

No abstract prepared.

2010-07-01

357

Production and mechanical properties of some Fe-based metallic glass wires

Full Text Available

2005-06-01

358

Proceedings of the North Atlantic Submarine Canyons Workshop : February 7-9, 1989 / prepared for the Minerals ...

No abstract prepared.

2002-07-01

359

Preparation, characterization and photocatalytic activity of the neodymium-doped TiO2 hollow spheres

Language: English ...

360

Preparation of the Nano Cobalt Powder by Wet Chemical Reduction Method

Not Available

2010-10-01

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

361

Preparation of Porous Mullite Composites through Recycling of Coal Fly Ash

Full Text Available

2011-06-01

362

Preparation of Polymer-modified Mortars with Recycled PET and Their Sound Absorption Characteristics

Full Text Available

2010-03-01

363

Preparation of Poly (acrylonitrile)/Poly (pyrrole) Composite and Its Mechanical Properties

Full Text Available

2010-09-01

364

Preparation of Activated Carbon Fiber-Ceramic Composites and Its Physical Properties

Full Text Available

1990-06-01

365

Preparation and Physicochemical Properties of Chitosan from Red Crab Waste-Shell

Full Text Available

1997-01-01

366

Plasma nitriding of ASTM F138 stainless steel at different pressures

Full Text Available

2001-03-01

367

Phytochemical study of Tynanthus fasciculatus (Bignoniaceae); Estudo fitoquimico de Tynanthus fasciculatus (Bignoniaceae)

No abstract prepared.

2009-07-01

368

Phenomenological analysis of K{sup +}-meson production in proton-nucleus collisions

No abstract prepared.

2005-07-01

369

PV Conversion Technologies; Session: OPV, Sensitized, Seed Funds (Presentation)

No abstract prepared.

2002-03-01

370

PROPERTIES AND PERFORMANCE OF CEMENT-BASED GROUTS FOR GEOTHERMAL HEAT PUMP APPLICATIONS.

No abstract prepared.

2008-04-01

371

Optimized filtration enhances oil-injected compressors; Optimierte Filtration verbessert oeleingespritzte Kompressoren

No abstract prepared.

1999-09-30

372

Optimization of the spectator detector arrangement for the pn {yields} pn{eta}' measurements at COSY-11

No abstract prepared.

2009-09-14

373

Online monitoring of pollen - development of a novel technique and first results of field experiments

No abstract prepared.

2002-03-01

374

On the combination of two dimensional Sn transport calculation and Monte Carlo calculation

No abstract prepared.

2005-07-01

375

Oil-injected compressors for energy saving; Verlustarmes Schraubenprofil. Oeleingespritzte Kompressoren zum Energiesparen

No abstract prepared.

2001-01-01

376

Occult brain metastases in HER2-positive breast cancer patients: Frequency and response to radiotherapy

No abstract prepared.

2008-05-13

377

Obtainment of lanthanum oxide by fractionated precipitation method

No abstract prepared.

2007-10-15

378

Obsidian under fire: considering the role of raw material variation in obsidian hydration analysis

... ammonium compounds benzilic acid chemical preparation lanthanum oxides

1979-01-01

379

Novel Tetracycline Resistance Determinant Isolated from an Environmental Strain of Serratia marcescens

No abstract prepared.

2000-07-01

380

Novel Antidrugabuse Peptide

No abstract prepared.

2007-01-01

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

381

International Science & Technology Center (ISTC)

Natural Biologically Active HLDF6 Peptide as Potential Preparation for Correction of Different Drugabuse Forms

382

Nitrogen accumulation in clays: solid-solution equilibrium and risk of gas generation

New tissue equivalent bolus useful in preventing of infection and invironmental pollution for radiotherapy

No abstract prepared.

2002-07-01

383

New paradigm : controlling initiation phase is necessary for optimization of wire-array z-pinch performance.

No abstract prepared

1999-03-01

384

New applications for pumps without shaft seals; Neue Einsatzgebiete fuer wellendichtungslose Pumpen

No abstract prepared.

2008-08-01

385

NMR assignment of the cAMP-binding domain A of the PKA regulatory subunit

No abstract prepared.

2005-05-01

386

N=2 supersymmetric radiation damping in an external electromagnetic field, noncommutativity and duality

No abstract prepared.

2006-12-15

387

Multinuclear Magnetic Resonance and X-ray Crystallographic Investigation of Some Mixed Ligand Alkylisocynaide Platinum(Ii) Complexes

No abstract prepared.

2008-07-01

388

Multi Canister Overpack (MCO) Topical Report [SEC 1 and 2

No abstract prepared.

2005-08-01

389

Morphology and Properties of Polyacrylonitrile/Na-MMT Nanocomposites Prepared via in-situ Polymerization with Macroazoinitiator

No abstract prepared.

1999-12-16

390

Modernization concepts for older steam turbines. Economic advantages; Modernisierungskonzepte fuer aeltere Dampfturbinen. Wirtschaftliche Vorteile

Full Text Available

2006-06-01

391

Micro-Fabricated Thin-Film Fuel Cells for Portable Power Requirements

No abstract prepared.

2003-10-20

392

Mechanistic aspects of fracture and R-curve behavior in human cortical bone

No abstract prepared.

2002-03-21

393

Mechanical-biological waste treatment as an alternative to thermal processes; MBA-Konzepte als Alternative zur thermischen Abfallbehandlung

No abstract prepared.

2005-06-24

394

Measurement of W-Boson Helicity Fractions in Top-Quark Decays Using costheta*

No abstract prepared.

2001-09-01

395

Magnetic properties of single crystalline RE{sub 2}PdSi{sub 3} intermetallic compounds

No abstract prepared.

2008-11-01

396

MPIRSPT : a parallelized all-electron DFT program for lanthanide and actinide calculations.

No abstract prepared.

2005-07-01

397

METHOD FOR SYNTHESIZING DERIVATIVE, COMPOUND LIBRARY AND METHOD FOR PREPARING THE SAME AND METHOD FOR SCREENING

No abstract prepared.

2008-08-01

398

J-STORE (Japan)

Full Text Available

2006-04-28

399

MANAGING WASTE AT LOS ALAMOS NATIONAL LABORATORY'S PLUTONIUM FACILITIES

Luminosity determination at COSY-11 using the proton-deuteron elastic scattering

No abstract prepared.

2000-01-01

400

Lipid Compositions Changes of Seasoned Pork Prepared with Medicinal Plant Extracts During Storage

No abstract prepared.

2002-03-01

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

401

Laser Spectroscopy: Assessment of Research Needs for Laser Technologies Applied to Advanced Spectroscopic Methods

Full Text Available

2007-12-01

402

LLNL inductrack progress report - February 99 through November 99

No abstract prepared.

1990-05-01

403

Iron in cookies prepared with fortified flour

No abstract prepared.

2000-03-08

404

Investigations and development of gaseous radiation detectors; Badania i rozwoj konstrukcji gazowych detektorow promieniowania

... Italy) Istituto Superiore di Sanita (Italy) 207 p. ENVIRONMENTAL SCIENCES

2009-04-01

405

Investigation of the pp {yields} nK{sup +}{sigma}{sup +} reaction

No abstract prepared

1998-12-31

406

Introduction of air pollution abatement measures in Germany; Einfuehrung von Klimaschutzmassnahmen in Deutschland

No abstract prepared.

2002-03-01

407

Insight into the output of reverse-time migration: what do the amplitudes mean?

No abstract prepared

1998-12-31

408

Influence of neutron-core excitations on high-spin states in {sup 88}Sr

No abstract prepared.

2005-05-01

409

Induced deformation of the canonical structure and UV/IR duality in (1 + 1)D

No abstract prepared.

2001-04-01

410

Individually adapted examination protocols for reduction of radiation exposure in chest CT

No abstract prepared.

2008-07-01

411

In vitro evaluation of stent-graft prosthesis by contrast-enhanced MR angiography

No abstract prepared.

2002-02-01

412

Improved near surface seismic imaging by combining tomography and reverse time migration.

No abstract prepared.

2002-02-01

413

Identifying Contributing Degradation Phenomena in PEM Fuel Cell Membrane Electrode Assemblies Via Electron Microscopy

No abstract prepared.

2010-04-01

414

INTERRUPTED-GROWTH STUDIES OF THE SELF-ASSEMBLY OF INTRINSICALLY ACENTRIC SILOXANE-DERIVED MONOLAYERS

No abstract prepared.

2006-10-01

415

Hydromechanical response of jointed host granitic rock during excavation of the FEBEX tunnel.

No abstract prepared.

2003-01-01

416

Histological analysis of hyaluronic acid and decorin in solid subcutaneous walker 256 rat carcinoma

No abstract prepared.

2003-04-01

417

High-resolution infrared spectroscopy of {gamma}-ray irradiated solid parahydrogen

No abstract prepared.

1998-07-01

418

High-Performance SPICE Development Including an Analytical Transient Photocurrent BJT Model

No abstract prepared.

2002-09-01

419

High resolution line shapes of weak autoionizing resonances identified through fluorescence from the satellite states of Ar+

No abstract prepared.

2000-08-01

420

HIGH ORDER STATISTICAL SIGNATURES FROM SOURCE-DRIVEN MEASUREMENTS OF SUBCRITICAL FISSILE SYSTEMS

No abstract prepared.

1997-07-01

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

421

Ground-temperature measurements

No abstract prepared.

1998-04-01

422

Geothermal progress monitor. Special supplement: proceedings of the geothermal program review

Three papers are included. A separate abstract was prepared for each one. (MHR)

1981-01-01

423

Gas sensing properties of polyacrylonitrile/metal oxide nanofibrous mat prepared by electrospinning

Separate abstracts were prepared for individual papers. (MHR)

1982-01-01

424

GaAs/(ordered) GaInP2 Heterostructures under Pressure and HighMagnetic Fields

Full Text Available

2008-07-01

425

Fresh air for the whole industry; Frischer Wind auf breiter Front

No abstract prepared.

1998-09-01

426

Fixed constituents of Bauhinia acuruana Moric; Constituintes fixos de Bauhinia acuruana Moric

No abstract prepared.

2010-06-15

427

First-principles investigation of Co wires at Pt(111) step-edges

No abstract prepared.

2010-07-01

428

First results of {pi}{sup 0}-{eta} mixing angle measurement

No abstract prepared.

2006-07-01

429

FY2003 Laboratory Directed Research and Development Program Annual Report

No abstract prepared.

2002-03-01

430

FAST FLUX TEST FACILITY (FFTF) FINAL SAFETY ANALYSIS REPORT AMENDMENT 83

No abstract prepared.

2004-07-30

431

Extended sectors of utilization by an advanced engineering. Utilization of wind power; Erweiterte Einsatzgebiete durch moderne Technik. Windenergienutzung

No abstract prepared.

2003-11-20

432

Extended molecular dynamics studies on {sup 40}Ca + {sup 40}Ca at 35A MeV

No abstract prepared.

2010-07-01

433

Exploring changes in solar model physics to mitigate the solar abundance problem

No abstract prepared

1997-12-31

434

Enhanced ion charge states in vacuum arc plasmas using a 'current spike' method

No abstract prepared.

2008-01-01

435

Enhanced and multiplexed detection via a novel RCA-aptamer based sensing system

No abstract prepared.

1999-07-01

436

Energy loss of titanium and copper ions in thin foils of gold at energies above Bragg's peak

No abstract prepared.

2006-09-06

437

Energy dependence of the pp {yields} ppK{sup +}K{sup -} total cross section close to threshold

No abstract prepared.

2005-07-01

438

Elemental content determination in leaves and extracts of Casearia medicinal plant by neutron activation analysis

No abstract prepared.

2002-03-01

439

Element specific defect investigation on Mg-alloys with coincident Doppler broadening spectroscopy

No abstract prepared.

2005-07-01

440

Electrical property and structure of diamond like carbon films prepared by IBAD

No abstract prepared.

2006-07-01

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

441

Electric cars. A reality for Ireland. Partnership of the Irish Government, ESB and Renault-Nissan

Short communication.

1995-12-31

442

Effects of season and body condition score on lipid metabolism and oxidative status of periparturient dairy cows

No abstract prepared.

2010-05-31

443

Effects of extracts of medicinal plants in the parasitaemia of Trypanosoma cruzi and in the biodistribution of the technetium-{sup 99m}

No abstract prepared.

2005-07-01

444

Effects of Coulomb and kaon nuclear potentials on soft K{sup +} production from nuclei

No abstract prepared.

2008-10-15

445

Effect of the medicinal plant Echinacea purpurea on the bioavailability of the radiopharmaceutical {sup 99M}TC-sodium pertechnetate

No abstract prepared.

2002-03-01

446

Effect of outside air ventilation rate on volatile organic compound concentrations in a call center

No abstract prepared.

2008-10-15

447

Effect of equal channel angular pressing on the deformation behaviour of magnesium alloy AZ31 under uniaxial compression

No abstract prepared.

2003-04-01

448

Effect of Chemical Treatment of Teflon Powder on the Properties of Polyamide 66/Teflon Composites Prepared by Melt Mixing

No abstract prepared.

2006-07-01

449

ESR spectroscopy of intermediate products of water radiolysis; Spektroskopia EPR produktow posrednich radiolizy wody

Full Text Available

2011-06-01

450

ENHANCED CONTROL OF MERCURY BY WET FLUE GAS DESULFURIZATION SYSTEMS - SITE 1 RESULTS

No abstract prepared

1998-12-31

451

EM Wave Absorption Properties on Particle Size and Permeability of ferrite and Preparation Temperature in Absorbers for Mobile Phones

No abstract prepared.

1999-05-01

452

Dynamic simulation of a pipe whip restraint; Simulation der Dynamik einer Ausschlagsicherung fuer eine Rohrleitung

Full Text Available

2004-04-01

453

Domain Bridging Interactions. A Necessary Contribution to the Function and Structure of 'Escherichia coli' Aspartate Transcarbamoylase

No abstract prepared.

1999-07-01

454

Discontinuous Galerkin Finite Element Method applied to the 1-D Spherical Neutron Transport Equation

No abstract prepared.

2001-01-01

455

Diagnostic Analysis of Silicon Photovoltaic Modules after 20--Year Field Exposure

No abstract prepared.

2005-11-07

456

Development of chemical separation in gas phase for heavy actinide and trans-actinide elements

No abstract prepared.

2000-09-25

457

Development of a dual serial-parallel multiphase CFD code for application to industrial combustor/reactor systems.

No abstract prepared

1998-01-01

458

Determination of metals in medicinal plants and soil from Amazon area by neutron activation analysis and ICP-MS

No abstract prepared.

2000-05-16

459

Decomposition of tar in pyrolysis gas by partial oxidation and thermal cracking. Part 2

No abstract prepared.

2005-07-01

460

Decay studies of rare-earth isotopes produced in the proton-induced fission

No abstract prepared

1998-12-31

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

461

DISCRETE SIMULATION OF REACTIVE AND NON-REACTIVE FLOW WITH LATTICE GAS AUTOMATA (LGA)

No abstract prepared

1998-01-01

462

Cryogenic heat pipe-target with aluminum condenser for the COSY-TOF experiment

No abstract prepared.

2000-01-01

463

Corrosion protection of onshore and offshore wind power systems; Korrosionsschutz von Windenergieanlagen Onshore and Offshore

No abstract prepared.

2002-03-01

464

Copper complexes of nonsteroidal anti-inflammatory drugs: An Opportunity yet to be realized

No abstract prepared.

2003-07-01

465

Contribution to the radiation preparation of wood-plastic materials. Pt. 7

No abstract prepared.

2002-01-01

466

Contribution to the radiation preparation of wood-plastic materials. Pt. 6

... odd nuclei organic compounds radiation effects radioisotopes synthesis

1974-01-01

467

Contribution to the radiation preparation of wood-plastic materials Pt. 3

... compounds polymers polyolefins polyvinyls radiation effects SYNTHESIS.

1974-01-01

468

Construction of REpower 5M; Errichtung der REpower 5M

... compounds plants radiation effects radioisotopes reaction kinetics trees

1974-01-01

469

Conduct of Operations Applicability Matrix for CMELS Low Hazard Facilities at LLNL Site 200

No abstract prepared.

2004-07-01

470

Conduct of Operations Applicability Matrix for CMELS Light Science and Industry and General Industry Facilities at LLNL Site 200

No abstract prepared.

2008-04-22

471

Computational analysis of candidate intron regulatory elements for tissue-specific alternative pre-mRNA splicing

No abstract prepared.

2008-04-22

472

Commentary on: Molecular basis for discriminating between normaland damaged bases by the human alkyladenine glycosylase, AAG

No abstract prepared.

2001-04-01

473

Climate change adaptation in coastal zones: Improving decision-making to support management strategies

No abstract prepared.

2001-03-05

474

Chemical and biological aspects of an arabinogalactan from the medicinal herb Phyllanthus niruri (quebra-pedra)

No abstract prepared.

2009-02-01

475

Charge station for electric cars; Ladestation versorgt Elektroautos einheitlich mit Strom

No abstract prepared.

2005-07-01

476

Central flat ventilation - an unfinished technology; Zentrale Wohnungslueftung - eine unfertige Technologie?

No abstract prepared.

2010-10-04

477

Building LAMMPS data files with car/mdf files and the msi2lmp utility.

No abstract prepared.

2003-10-01

478

Biocontrol Agents of Crops Diseases

No abstract prepared.

2010-03-01

479

International Science & Technology Center (ISTC)

Scale up of Technology for Production and Application of Rhizobacteria-Based Preparations as Biocontrol Agents of Crop Diseases

480

BONDING SELF-ASSEMBLED, COMPACT ORGANOPHOSPHONATE MONOLAYERS TO THE NATIVE OXIDE SURFACE OF SILICON

BIOGEOCHEMISTRY IN THE GLOBAL PARALLEL OCEAN PROGRAM; CONNECTIONS WITH CLIMATE-RELEVANT TRACE GASES

No abstract prepared.

2003-01-01

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

481

Aspects of in vitro fatigue in human cortical bone: Time and cycle dependent crack growth

No abstract prepared.

2000-09-19

482

Application of model-based method to measurement of radwaste from nuclear fuel processing

No abstract prepared.

2005-01-01

483

Antioxidant Characteristics and Preparation of Chocolate Added with Sochungryong-Tang (Oriental Medicinal Plants Extract)

No abstract prepared

1998-01-01

484

Akt interacts directly with Smad3 to regulate the sensitivity to TGF-beta-induced apoptosis

Full Text Available

2005-10-01

485

Admissible representations and characters of the affine superalgebras osp(1,2) and sl(2/1)

No abstract prepared.

2004-04-12

486

Adaptation to climate change in coastal zones: An analysis of the interventions to safeguard Venice and its lagoon

No abstract prepared.

1998-07-01

487

Absence of magnetic ordering in a heavy fermion superconductor UBe{sub 13}

No abstract prepared.

2009-02-01

488

A scissors-like state on top of the quadrupole vibrational state in {sup 88}Sr

No abstract prepared

1999-02-01

489

A scissors-like excitation on top of the quadrupole vibrational state in {sup 88}Sr

No abstract prepared.

2001-04-01

490

A numerical analysis of reaction-diffusion effects on species mixing rates in turbulent premixed methane-air combustion

No abstract prepared.

2001-07-01

491

A Green's Function Method for Treating Compton Frequency Redistribution

No abstract prepared.

2009-05-01

492

3D Multispecies Nonlinear Perturbative Particle Simulations of Collective Instabilities in Intense Particle Beams

No abstract prepared.

2004-09-10

493

2004 Rock Deformation Gordon Conference - August 8-12, 2004

No abstract prepared.

2000-01-21

494

'Seaflow Energy from the sea; 'Seaflow' Energie aus dem Meer

No abstract prepared.

2004-08-08

495

'Blue sky upon the Lausitz'; 'Blauer Himmel ueber der Lausitz'

No abstract prepared.

2004-03-01

496

Retrospective individual dosimetry using luminescence and EPR after radiation accidents

No abstract prepared.

2007-07-15

497

Digital direct magnification mammography with storage phosphor screens. Standardized and image result dependent post-processing parameters; Digitale Vergroesserungsmammographie mit Speicher-Folien-Technik. Standardisierte und befundorientierte Bildverarbeitungsparameter

In areas where radiation dose monitoring has not been performed, it is essential to use material available in the environment be able to rapidly assess doses to individuals for immediate emergency medical care or for general estimation of the radiological consequences. It was shown that certain types of telephone cards containing microchips have the potential to be used as individual radiation dosimeters in emergency situations to detect doses over 250 mGy by luminescence measurements. In order to understand the dosimetric properties of chip cards, the components obtained from INFINIEON Company at various stages of production were used for luminescence measurements. It is found that the protecting layer used above the chips so called 'globe top' is the main source of radiation induced signal in chip cards. The globe top produced by INFINIEON at that stage is found to contain SiO2 and Epoxy. In order to improve the dosimetric properties of the chip cards, the raw material of the globe ...

498

Need for New Optimisation Strategies in CR and Direct Digital Radiography

Present day mammography has not been able to make use of the advantages of digital luminescence radiography because of the limited spatial resolution. The recent development of electromagnetic focusing X-ray tube with effective focal spot sizes from 0.04 to 0.12 mm allows radiographic direct magnification with less geometric blur. It is now possible to combine direct magnification mammography with digital luminescence radiography. By combining high quality storage phosphor screens with an HQ-workstation a spatial resolution of 8 lp/mm is possible for 1.7-fold magnification. For 4-fold spot magnification views spatial resolution can be theoretically increased to approx. 20 lp/mm. One important advantage of digital radiography is the possibility of image-postprocessing. This article presents two sets of standard parameters and three sets of image dependent parameters for better imaging of specific lesions, such as microcalcifications. The introduction of the storage ...

1997-05-01

499

Need for New Optimisation Strategies in CR and Direct Digital Radiography

Digital imaging techniques such as Digital Image Intensifier Radiography and Digital Storage Phosphor (Selenium) Radiography are replacing conventional film-screen radiography more and more. The aim of this development is the extension of diagnostic capabilities and the reduction of side effects such as radiation dose. Conventional film-screen radiography and digital radiography are very different ways of imaging. For digital radiography specific post-processing is the link between imaging conditions and film documentation. Optimisation of the images includes new possibilities of post-processing and a broad range for variation of the dose. Especially in fluoroscopy, dose can be reduced significantly by new technical features like pulsed fluoroscopy. For digital radiography the European guidelines on quality criteria have to be applied to projection radiography, digital subtraction radiography and to fluoroscopy. Further work should lead to a definition of reference ...

2000-07-01

500