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Critical Evaluation and Thermodynamic Optimization of the CaO-P2O5 System  

NASA Astrophysics Data System (ADS)

A critical evaluation and thermodynamic optimization of all available experimental data of the CaO-P2O5 system was performed to obtain a set of thermodynamic functions which can reproduce all available and reliable experimental phase diagram and thermodynamic data. The modified quasichemical model, which takes into account short range ordering, was employed to describe the thermodynamic properties of the liquid phase. Discrepancies observed in the Gibbs energy of formation of the compounds were resolved and phase diagram and thermodynamic data of all the solid and liquid phases were well reproduced within experimental errors limits including the sharp liquidus of Ca3(PO4)2.

Hudon, Pierre; Jung, In-Ho




NASA Astrophysics Data System (ADS)

The temperature dependence of the magnetic susceptibility of xFe2O3·(100-x)-[P2O5·CaO] glasses with 0P2O5·CaO glass matrix, the Fe2+ ion content is higher than that of the Fe3+ ions for glasses with x?10 mol%. For the glasses with x>35 mol%, the evaluated values of the ?eff indicate either the presence of Fe+ ions or the coordination influence on the magnetic moment of iron ions, but the presence of small quantities of the antiferromagnetic or ferrimagnetic interactions between iron ions in studied temperature range cannot be excluded. The high temperature susceptibility results indicate that the iron ions are isolated or participate in dipole-dipole interactions for glasses with x?35 mol% and are antiferromagnetically coupled for higher contents of Fe2O3.



Compressibility of P2O5-Al2O3-Na2SiO3 melts  

NASA Astrophysics Data System (ADS)

The effect of composition and temperature on the relaxed adiabatic bulk modulus of melts in the P2O5-Al2O 3-Na2SiO3 system have been investigated in the temperature range of 1140 to 1450 °C using ultrasonic interferometric methods at frequencies of 3, 5 and 7 MHz. The density of these melts was determined using Pt-double-bob Archimedean densitometry techiques. P2O5 is known to dramatically affect the structure and the chemical and physical properties of granitic and pegmatitic melts as a function of the peralkalinity of the melt. The physical results of the structural changes occurring in Na2O-Al2O3-SiO2 melt upon the addition of P2O5 are observed by variations in the properties such as density and compressibility. For the present peralkaline melts, the bulk modulus and density decrease with addition of 15 mol% P2O5, and increase with the addition of 15 mol% Al2O3. The addition of P2O5 to the present melts results in a larger increase in melt compressibility than that observed with increasing polymerization between Na2SiO3 and Na2Si2O5 melts. This would suggest that not only is the polymerization of the melt increasing with the addition of P2O5 (Mysen et al. 1981; Nelson and Tallant 1984; Gan and Hess 1992), but that the tetrahedrally co-ordinated phosphorus complexes are influencing the bond lengths and energies within the melt structure; resulting in the structure becoming more compressible than expected, although incompressible (Vaughan and Weidner 1987) tetrahedral P2O5 polyhedra (Mysen et al. 1981; Gan and Hess 1992; Toplis et al. 1994) are being added to the melt structure.

Webb, Sharon; Courtial, Philippe



Effect of P2O5 and FetO on the Viscosity and Slag Structure in Steelmaking Slags  

NASA Astrophysics Data System (ADS)

The present paper investigates the influence of P2O5 and FetO on the viscosity and structure of steelmaking slags. An understanding of the viscous behavior and structure of FetO-bearing smelting slags is essential to control the dephosphorization in steelmaking process and to efficiently recycle the phosphorus from steelmaking slags. It is found that the viscosity of CaO-SiO2-Al2O3-MgO-FetO-P2O5 slags slightly increases with increasing P2O5 content, while the viscosity decreases with increasing FetO content. The degree of the polymerization of quenched slags, determined from Raman spectra, is found to increase with increasing P2O5 content and decrease with increasing FetO content. It is also noted that the peaks of Raman spectra between 800 and 1200 cm-1 were nearly absent at the FetO content of 22.46 wt pct; whereas according to 29Si MAS-NMR and FTIR analysis, it is clearly seen that the [SiO4]-tetrahedra-related peaks existed even for the same slag. This may confirm that small quantities of extra-framework iron species can absorb the Raman scattering and damp the Raman signal intensity and the presence of FetO in the slag does not necessarily eliminate [SiO4]-tetrahedra.

Wang, Z. J.; Shu, Q. F.; Sridhar, S.; Zhang, M.; Guo, M.; Zhang, Z. T.



Electronic and ionic conductivity of glasses inside the Li 2O–MoO 3–P 2O 5 system  

Microsoft Academic Search

A wide range of coloured electronic or mixed electronic–ionic glasses has been shown in the alkali oxide poor-region of the Li2O–MoO3–P2O5 system, next to the colourless ionic glasses located in the alkali oxide rich-region. These coloured glasses have been studied by electron paramagnetic resonance (EPR) spectroscopy. The Mo5+ and Mo6+ cation percentages have been evaluated for several series of glasses

Lahcen Bih; Mohamed El Omari; Jean-Maurice Réau; Mustapha Haddad; Driss Boudlich; Abdelmajid Yacoubi; Abdelilah Nadiri



FT-IR and thermoluminescence investigation of P2O5-BaO-K2O glass system  

NASA Astrophysics Data System (ADS)

The 0.5P2O5?xBaO?(0.5-x)K2O glass system (0?x?0.5mol%) is investigated by FT-IR and thermoluminescence as a possible dosimetic material. FT-IR spectra show structural network modifications with the composition variations of the studied glasses. The predominant absorption bands are characterized by two broad peaks near 500 cm-1, two weak peaks around 740 cm-1 and three peaks in the 900-1270 cm-1 region. The shift in the position of the band assigned to asymmetric stretching of PO2- group, ?as(PO2-) modes from ˜1100 cm-1 to 1085 cm-1 and the decrease in its relative intensity with the increasing of K2O content shows a network modifier role of this oxide.. Luminescence investigations show that by adding modifier oxides in the phosphate glass a dose dependent TL signals result upon irradiation. Thus P2O5-BaO-K2O glass system is a possible candidate material for dosimetry in the dose 0 - 50 Gy range.

Ivascu, C.; Timar-Gabor, A.; Cozar, O.



Effect of P2O5 and MnO2 on crystallization of magnetic glass ceramics  

PubMed Central

This work pointed out the effect of adding P2O5 and/or MnO2 on the crystallization behavior of magnetic glass ceramic in the system Fe2O3·ZnO·CaO·SiO2·B2O3. The differential thermal analysis of the quenched samples revealed decrease in the thermal effects by adding P2O5 and/or MnO2 to the base sample. The X-ray diffraction patterns show the development of nanometric magnetite crystals in a glassy matrix. Heat treatment at 800 °C for 2 h, under reducing atmosphere, caused an increase in the amount of the crystallized magnetite with the appearance of minor hematite and Ca2SiO4. The transmission electron microscope revealed a crystallite size in the range 10–30 nm. Magnetic hysteresis cycles were analyzed with a maximum applied field of 25 kOe at room temperature. The prepared magnetic glass ceramics are expected to be useful for localized treatment of cancer.

Abdel-Hameed, Salwa A.M.; Marzouk, Mohamed A.; Farag, Mohamed M.



Dc and AC Conductivity Studies on Ag2O-P2O5-V2O5 Glass System  

NASA Astrophysics Data System (ADS)

Composition, temperature and frequency dependence conductivity studies have been carried out on xAg2O-(50-x)P2O5-50V2O5 (x = 5 to 40 mol%) glass system. The dc conductivity is found to increase with increase of Ag2O concentration up to 30 mol% and further increase of Ag2O concentration the conductivity decreases sharply. The activation energy also shows compositional dependence. The ac conductivity data has been analyzed by fitting the data in to Almond-West type power law behaviour ? (?) = ? (0) + A ?s. The values of s were found to decrease with the increase of temperature and show a weak minimum around 400K. The results are discussed on the basis of existing models by considering the structural groups present in these glasses.

Anavekar, R. V.; Eraiah, B.



Preparation and characterization of sol–gel derived glasses in the ternary Na 2 O–Al 2 O 3 –P 2 O 5 system  

Microsoft Academic Search

A new sol–gel synthesis route to organic free Na2O–Al2O3–P2O5 xerogels was developed. These xerogels contain P2O5 up to 67.5 mole % and Al2O3 up to 20 mole % and could be melted to homogeneous glasses in air at significantly lower temperatures than those applied using the conventionally melting method. Aluminum isopropoxide dissolved in isopropanol, orthophosphoric acid dissolved in isopropanol and

Sherief M. Abo-Naf; N. A. Ghoneim; H. A. EI-Batal



Effects of the substitution of P2O5 by B2O3 on the structure and dielectric properties in (90-x) P2O5-xB2O3-10Fe2O3 glasses.  


90%[xB2O3 (1-x) P2O5] 10%Fe2O3, glass systems where (x=0 mol%, 5 mol%, 10 mol%, 15 mol%, 20 mol%) was prepared via a melt quenching technique. The structure of glass is investigated at room temperature by, Raman and EPR spectroscopy. Raman studies have been performed on these glasses to examine the distribution of different borate and phosphate structural groups. We have noted an increase from 3 to 4 in the coordination number of the boron atoms from 3 to 4, i.e., the conversion of the BO3 triangular structural units into BO4 tetrahedra. The samples have been investigated by means of electron paramagnetic resonance (EPR). The results obtained from the gef=4.28 EPR line are typical of the occurrence of iron (III) occupying substitutional sites. Moreover, the dielectric sizes such as ?'(?), ??(?), imaginary parts of the electrical modulus, M(*)(?) and the loss tan?, their variation with frequency at room temperature show a decrease in relaxation intensity with an increase in the concentration of (B2O3). On the present work, we have found a weak extinction index with our new glass. PMID:23995605

Sdiri, N; Elhouichet, H; Dhaou, H; Mokhtar, F



Structural and thermal properties of La2O3sbnd Fe2O3sbnd P2O5 glasses  

NASA Astrophysics Data System (ADS)

The structural properties of xLa2O3sbnd (40 - x)Fe2O3sbnd 60P2O5(x = 0, 2, 4, 6, 8, 10 mol%) glasses have been investigated by Fourier transform infrared spectrum (FTIR), X-ray diffraction (XRD) and differential scanning calorimetry (DSC). The FTIR spectra show that the replacement of up to 6 mol% Fe2O3 by La2O3 does not produce any fundamental change in the glass structure, which consists predominantly of pyrophosphate, Q1 units. XRD analysis has confirmed that the majority of samples are X-ray amorphous, and crystallization occurs when the sample containing 8 mol% La2O3, the crystalline phase is LaPO4. The XRD analysis indicates that the solubility of lanthanum oxide in these iron phosphate melts is less than 8 mol%. Glass transition temperature (Tg) and (Tr - Tg) increase as the lanthanum content of the glass is increased. This result suggests that the glass network is strengthening and the thermal stability is improved with the addition of La2O3.

Qian, Bin; Yang, Shiyuan; Liang, Xiaofeng; Lai, Yuanming; Gao, Long; Yin, Guangfu



Influence of phosphorous precursors on spectroscopic properties of Er3+-activated SiO2-HfO2-P2O5 planar waveguides  

NASA Astrophysics Data System (ADS)

(70-x)SiO2-30HfO2 -xP2O5 (x= 5, 10 mol %) glass planar waveguides activated by 0.5 mol% Er3+ ions were prepared by sol-gel route. Several phosphorous precursors have been investigated for the synthesis of a dielectric stable sol useful for the realization of planar waveguides. The waveguides were investigated by different diagnostic techniques. The optical properties such as refractive index, thickness, number of propagating modes and attenuation coefficient were measured at 632.8 and 543.5 nm by prism coupling technique. Transmission measurements were carried out in order to assess the transparency of the deposited films. Photoluminescence measurements and lifetime decay curves of the Er3+ transition (4I13/2 ? 4I15/2) were performed in order to investigate the role of P2O5.

Vasilchenko, I.; Carpentiero, A.; Chiappini, A.; Chiasera, A.; Vaccari, A.; Lukowiak, A.; Righini, G. C.; Vereshagin, V.; Ferrari, M.



Hydrothermal synthesis of mixed phosphates of neodymium and alkaline metals (Me 2 O·Nd 2 O 3 ·4P 2 O 5 )  

Microsoft Academic Search

The phase formation in the system Me2O-Nd2O3-P2O5-H2O (where Me = Li, Na, K, Rb and Cs) has been studied under hydrothermal conditions in the temperature and pressure range 300 to 700‡ C and 0.5 to 600 atm, respectively, using vitreous carbon glass liners. A composition diagram showing the possible fields of crystallization of different phases under equilibrium conditions is given.

K. Byrappa; B. N. Litvin



Biological activity of a SiO 2-CaO-P 2O 5 sol-gel glass highlighted by PIXE-RBS methods  

NASA Astrophysics Data System (ADS)

It is proposed in this study to observe the influence of P 2O 5 on the formation of the apatite-like layer in a bioactive glass via a complete PIXE characterization. A glass in the SiO 2-CaO-P 2O 5 ternary system was elaborated by sol-gel processing. Glass samples were soaked in biological fluids for periods up to 10 days. The surface changes were characterized by a micro-analytical technique of particle induced X-ray emission (PIXE) associated to Rutherford backscattering spectroscopy (RBS), in which multi-elemental distributions are efficiently analyzed. Elemental maps of major and trace elements were obtained at a micrometer scale and revealed the bone bonding ability of the material. A calcium phosphate-rich layer containing magnesium appears a few days after the interaction. We demonstrate that the presence of phosphorus in the material has an impact on the development and the formation rate of the bone-like apatite layer. Indeed, the Ca/P atomic ratio at the glass/biological fluids interface is closer to the nominal value of pure apatite compared to P 2O 5-free glasses. It would permit, in vivo, an improved chemical bond between the biomaterials and bone.

Lao, J.; Nedelec, J. M.; Moretto, Ph.; Jallot, E.



Pool-Frenkel effect and high frequency dielectric constant determination of semiconducting P 2 O 5 Li 2 MoO 4 Li 2 O and P 2 O 5 Na 2 MoO 4 Na 2 O bulk glasses  

Microsoft Academic Search

The ternary 70P2O5-10Li2MoO4-20Li2O and 70P2O5-10Na2MoO4-20Na2O glasses, prepared by the press-melt quenching technique, were studied at temperatures between 298 and 418 K for their high\\u000a dc electric field properties. For the above purpose, the effect of a strong electric field on the dc conduction of these amorphous\\u000a bulk samples was investigated using the gap-type electrode configuration. At low electric fields, the

Dariush Souri; Mohammad Elahi; Mohammad S. Yazdanpanah



Optical and thermal properties of P 2O 5–Na 2O–CaO–Al 2O 3:CoO glasses doped with transition metals  

Microsoft Academic Search

The aim of this paper is to report the optical and thermal properties of V2O5 and CuO doped P2O5–Na2O–CaO–Al2O3:CoO glasses so as to investigate their possible use in solar collection applications. The optical absorption spectra of the glasses at room temperature were in the spectral range of 200–1100nm. The optical band gaps of the glass samples were determined for direct

S. Cetinkaya Colak; E. Aral



Crystallization and stoichiometry of crystals in Na 2CaSi 2O 6–P 2O 5 based bioactive glasses  

Microsoft Academic Search

Devitrification treatment of Na2CaSi2O6–P2O5 based bioglasses (45S5.2 and 55S4.1) at 715°C for up to 90min caused amorphous phase separation via a bulk nucleation and growth mechanism, and then the formation of a single crystalline phase from the dispersed phosphorus-rich amorphous phase. The combined evidences of X-ray diffraction, optical\\/electron microscopy, energy dispersive X-ray analysis, Raman spectroscopy and density measurement indicated the

Li-Chen Huang; Chung-Cherng Lin; Pouyan Shen



Role of modifier oxide in emission spectra and kinetics of Er-Ho codoped Na 2SO 4-MO-P 2O 5 glasses  

NASA Astrophysics Data System (ADS)

The glasses of the composition 19Na 2SO 4-20MO-60P 2O 5: 1.0Ho 2O 3/1.0Er 2O 3 (M = Mg, Ca, and Ba) have been synthesized. Optical absorption and fluorescence spectra (in the spectral range 350-2100 nm were studied at ambient temperature. The spectra were characterized using Judd-Ofelt theory. From the luminescence spectra, various radiative properties like transition probability A, branching ratio ? and the radiative life time ? for blue (B), green (G) and red (R) emission levels of these glasses have been evaluated. The energy transfer between the two rare earth ions (Ho 3+ and Er 3+) in co-doped Na 2SO 4-MO-P 2O 5 glass systems in the visible and NIR regions has also been investigated. Highest intensity, the highest quantum efficiency and maximum energy transfer with low phonon losses of B, G, and R lines has been observed in BaO mixed glasses. The reasons for such higher values of these parameters have been discussed in the light of varying field strengths at the rare earths ion site due to replacement of one modifier oxide with the other. The enhanced intensity of NIR emission (at 2.0 ?m) has also been discussed in terms of cross relaxation of Er 3+ ions from 4I 13/2 level to 5I 7 of Ho 3+ ions.

Rao, P. Raghava; Venkatramaiah, N.; Gandhi, Y.; Kumar, V. Ravi; Kityk, I. V.; Veeraiah, N.



The sol-gel prepared SiO2-CaO-P2O5 composites doped with Metronidazole for application in local delivery systems.  


The aim of this study was to evaluate the physical properties, chemical structure and bioactivity of sol-gel processed oxide (SiO(2)-CaO-P(2)O(5)) composites used as controlled release materials for Metronidazole-drug applied in periodontal disease treatment. The obtained composite materials were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), the Brunauer-Emmet-Teller (BET) technique and further monitoring in the ultraviolet and visible light regions (UV-Vis) of the in vitro release of the drug over time. Using tetramethoxysilane (TMOS) as a precursor of silica matrix and calcium nitrate tetrahydrate (Ca(NO(3))(2) 4H(2)O), triethyl phosphite (P(OC(2)H(5))(3)) as precursors of CaO and P(2)O(5) respectively, xerogels with different morphology and physical properties were obtained. The applied modifications improved also the bioactivity and changed the profile of the drug release. Based on the presented results of this study, it may be concluded that applied xerogel matrices could be promising candidates for the formulation in local delivery systems. PMID:21480825

Czarnobaj, Katarzyna; Sawicki, Wies?aw



Fabrication of noble-metal nanoparticle-doped SiO2-B2O3-P2O5 waveguide films  

NASA Astrophysics Data System (ADS)

In this article, we report the fabrication and the characterization of Pt/SiO2-B2O3-P2O5 and Au/SiO2-B2O3-P2O5 composite thin films suitable for planar lightwave circuits (PLCs). The host material was prepared by using flame hydrolysis deposition (FHD). Platinum was doped from colloidal solutions with concentrations of 500, 1000, and 2000 ppm. Gold was doped by sputtering with various deposition times. The samples displayed absorption peaks originating from the surface plasmon resonance (SPR) of the dopant metal particles. With increasing dopant particle size, the absorption peak shifted toward longer wavelength, and the full width at half maximum (FWHM) of the absorption band broadened. The Maxwell-Garnett theory was used to explain the size dependence of the plasmon peaks. The dopant metal particles were found to order as a monolayer within the silica matrix, opening the possibility for surface-plasmon-resonance-based waveguiding in optical devices.

Lee, Hunhyeong; Kang, Minkyung; Nichols, William T.; Shin, Dongwook



Structure, dielectric and bioactivity of P2O5-CaO-Na2O-B2O3 bioactive glass  

NASA Astrophysics Data System (ADS)

Bioactive phosphate glasses have been widely investigated for bone repair. Phosphate glass system of 47P2O5-30.5CaO-(22.5-x)Na2O-xB2O3 has been prepared by melt quenching technique. From the Raman analysis, it is confirmed that phosphate network form metaphosphate structure. Bioactivity of the glass is studied by immersing the prepared glass in simulated body fluid (SBF). All the glasses exhibited bioactivity after soaking in SBF. Addition of B2O3 to the glass by replacing the Na2O produces considerable effect on the dielectric and bioactivity of the glass. Ion dynamics are also analyzed through imaginary modulus and imaginary dielectric permittivity.

Maheswaran, A.; Hirankumar, G.; Heller, Nithya; Karthickprabhu, S.; Kawamura, Junichi



Photoluminescence and ?-RAY Irradiation of SrO-B2O3-P2O5:Eu2+ and SrMoO4:Eu3+ Phosphors  

NASA Astrophysics Data System (ADS)

Europium-doped SrO-B2O3-P2O5 and SrMoO4 phosphors for application in white LEDs sources were synthesized and characterized. Photoluminescence spectra showed intense blue and red emissions after UV excitation which can be ascribed to Eu2+ and to Eu3+ respectively. The shape of the blue emission in samples was correlated to the existence of different phases in the Eu2+ doped samples as pointed out by X-ray diffraction Moreover, ?- irradiation tests were performed on some samples in order to explore possible effects by X-ray diffraction, photoluminescence emission spectra and luminescence decay kinetics after short pulse excitation.

Zhu, Chaofeng; Chen, Xianling; Yuan, Shuanglong; Yang, Yunxia; Chen, Guorong; Baccaro, S.; Cecilia, A.; Falconieri, M.; Seralessandri, L.; Bellusci, M.



Investigation of the surface reactivity of a sol-gel derived glass in the ternary system SiO 2-CaO-P 2O 5  

NASA Astrophysics Data System (ADS)

A new glass formulation, with the molar composition 60% SiO 2-35% CaO-5% P 2O 5, was synthesized using the sol-gel process, for applications as biomaterial in orthopaedic or maxillo facial surgery. Pellets, made of glass powder, were uniaxially compacted and soaked in simulated body fluid (SBF) for up to 7 days at 37 °C to evaluate glass bioactivity. Ionic exchanges at the interface glass-SBF were evaluated by studying evolutions of calcium, phosphorus and silicon concentrations in SBF using ICP-OES. Changes in glass surface, and the formation of crystalline phases were analyzed using XRD, SEM, EDS and FTIR methods. Results form ICP-OES showed a high reactivity of the glass surface with a very high and continuous release of calcium, a limited glass dissolution and an uptake of phosphorous from SBF. Results from both FTIR and XRD analysis indicated that the glass surface was progressively covered by two different phases: CaCO 3 as calcite and a carbonated apatite layer. The formation of these phases, following two different schemas, was observed after 2 h of immersion and confirmed after 7 days. SEM micrographs and EDS analysis demonstrated that the main phase, a carbonated apatite, was present as micro-spheroids and the secondary phase, calcite, was materialized by agglomerates which have diameters up to 10-15 ?m. These results are in accordance with a bioactive feature of the glass studied.

Mami, Mohamed; Lucas-Girot, Anita; Oudadesse, Hassane; Dorbez-Sridi, Rachida; Mezahi, Fatima; Dietrich, Elodie



Gel-derived materials of a CaO-P(2)O(5)-SiO(2) system modified by boron, sodium, magnesium, aluminum, and fluorine compounds.  


Bioactive glass-ceramic materials of the CaO-P(2)O(5)-SiO(2) system modified by adding boron, magnesium, sodium, fluorine, and aluminum were obtained using the sol-gel method. Gel-derived materials were produced in the pellet form obtained by compression of powders as well as in coatings on glass slides. The materials obtained were examined in vitro with regard to the ability of calcium phosphate layer to form on the material surface as the result of contact with simulated body fluid (SBF). SBF pH changes and calcium solubility in this solution were determined and scanning electron microscopy, energy-dispersive X-ray analysis, and infrared spectroscopy studies were conducted before and after contact of the materials with SBF. The gels modified by aluminum were amorphous, whereas the sodium and fluorine additives promoted the bulk crystallization of gel-derived materials. The ability of calcium phosphates to crystallize on the surface of gel-derived materials depended only slightly on the types of additives applied, and the character of this dependence was different from that observed in melted glasses. Moreover, to estimate the biocompatibility of gel-derived coatings, we examined the proliferation, collagen synthesis, adhesion, and morphology of fibroblasts (NRK cells) cultured in the presence of gel-derived materials. The results of these experiments showed that none of the tested materials significantly reduced any cell function. PMID:11033542

Laczka, M; Cholewa-Kowalska, K; Laczka-Osyczka, A; Tworzydlo, M; Turyna, B



Neutron scattering study on cathode LiMn2O4 and solid electrolyte 5(Li2O)(P2O5)  

NASA Astrophysics Data System (ADS)

Neutron scattering is very important technique in order to investigate the energy storage materials such as lithium-ion battery. The unique advantages, neutron can see the light atoms such as Hydrogen, Lithium, and Oxygen, where those elements are negligible by other corresponding X-ray method. On the other hand, the energy storage materials, such as lithium ion battery is very important for the application in the electric vehicles, electronic devices or home appliances. The battery contains electrodes (anode and cathode), and the electrolyte materials. There are many challenging to improve the existing lithium ion battery materials, in order to increase their life time, cyclic ability and also its stability. One of the most scientific challenging is to investigate the crystal structure of both electrode and electrolyte, such as cathodes LiCoO2, LiMn2O4 and LiFePO4, and solid electrolyte Li3PO4. Since all those battery materials contain Lithium ions and Oxygen, the used of neutron scattering techniques to study their structure and related properties are very important and indispensable. This article will review some works of investigating electrodes and electrolytes, LiMn2O4 and 5(Li2O)(P2O5), by using a high resolution powder diffraction (HRPD) at the multipurpose research reactor, RSG-Sywabessy of the National Nuclear Energy Agency (BATAN), Indonesia.

Kartini, E.; Putra, Teguh P.; Jahya, A. K.; Insani, A.; Adams, S.



On the synthesis, characterization and magnetic properties of two new phases discovered in the PbO-Fe2O3-P2O5 system  

NASA Astrophysics Data System (ADS)

The PbFe3O(PO4)3 powder compound was studied by means of X-ray diffraction (XRD) from 300 to 6 K, electron-probe microanalysis (EPMA) coupled with wavelength dispersion spectroscopy (WDS), calorimetric (DSC and specific heat) and magnetic properties measurements. Magnetization, magnetic susceptibility and specific heat measurements carried out on PbFe3O(PO4)3 powders firmly establish a series of three ferromagnetic (FM)-like second order phase transitions spanned over the 32-8 K temperature range. Discrepancies between magnetization and specific heat data obtained in PbFe3O(PO4)3 powders and single crystals are highlighted. A first extraction of the critical exponents (?,?,?) was performed by ac magnetic susceptibility in both PbFe3O(PO4)3 powders and single crystals and the values were found to be consistent with mean-field theory. Further exploration of the PbO-Fe2O3-P2O5 system led to the discovery of a new langbeinite phase, Pb1.5Fe2(PO4)3, the crystal structure of which was solved by room temperature single crystal XRD (P213, Z=4, a=9.7831(2) Å). This phase does not undergo any structural phase transition down to 6 K nor any kind of long range ordering down to 2 K.

El Hafid, Hassan; Velázquez, Matias; Pérez, Olivier; El Jazouli, Abdelaziz; Pautrat, Alain; Decourt, Rodolphe; Véron, Emmanuel; Viraphong, Oudomsack; Delmas, Claude



Structural and thermal characterization of CaO-MgO-SiO2-P2O5-CaF2 glasses  

SciTech Connect

The paper presents the influence of varying CaO/MgO ratio on the structure and thermal properties of CaO-MgO-SiO2-P2O5-CaF2 glasses. A series of eight glass compositions in the glass forming region of diopside (CaMgSi2O6) - fluorapatite [Ca5(PO4)3F] - wollastonite (CaSiO3) ternary system have been designed and synthesized by varying diopside/wollastonite ratio in glasses. The as prepared melt-quenched glasses have been characterized for their structure by infrared spectroscopy (FTIR) and magic angle spinning (MAS)-nuclear magnetic resonance (NMR) spectroscopy. Silicon is predominantly present as Q2 (Si) species, while phosphorus tends to coordinate in orthophosphate environment in all the investigated glasses. The change in CaO/MgO ratio had an insignificant affect on the structure of glasses. The thermal sintering and crystallization parameters for the studied glasses have been obtained from differential thermal analysis (DTA) while crystalline phase fractions in the sintered glass-ceramics have been analyzed by X-ray diffraction adjoined with Rietveld refinement. Diopside, fluorapatite, wollastonite and pseudowollastonite have crystallized as the main crystalline phases in all the glass-ceramics with their content varying with respect to variation in CaO/MgO ratio in glasses. Scanning electron microscopy (SEM) has been used to shed light on the microstructure of glass-ceramics. The possible implications of structure and sintering behaviour of glasses on their bioactivity have been discussed.

Kansal, Ishu; Goel, Ashutosh; Tulyaganov, Dilshat U.; Rajagopal, Raghu R.; Ferreira, Jose M.



Thermal and structural characterization of erbium-doped borosilicate fibers with low silica content containing various amounts of P2O5 and Al2O3  

NASA Astrophysics Data System (ADS)

We report results on the processing and characterization of different glass preforms and single core fibers within the SiO2-Na2O-B2O3-Er2O3-P2O5-Al2O3 system. Micro-Raman spectroscopy was used to identify post-draw structural modification. The differences in the micro-Raman spectra recorded on the preform and on the fiber glass were attributed to a change in the structure induced by the drawing process. Changes in the silicate network organization and small scale molecular orientation within the glass matrix are suspected to occur during the fiber drawing process. We found that the extent in the changes between the preform and fiber properties depend on the glass composition. The glass network of the Al-containing fiber is expected to be less sensitive to the drawing process than that of the fiber matrix as the network of this Al-containing fiber is formed by a larger number of Si-BO units in the network and neutral three-coordinated boron compared to the network of the fiber matrix. From the micro-Raman spectra, formation of small crystals is suspected to occur in the P-containing glasses during the fiber drawing process. The resulting fibers were found to have propagation losses at 1330 nm and Er3+ absorption between (7 ± 1) and (25 ± 1) dB/m and (36 ± 1) and (47 ± 1) dB/m, respectively, depending on the glass composition.

Bourhis, Kevin; Shpotyuk, Yaroslav; Massera, Jonathan; Aallos, Ville; Jouan, Thierry; Boussard-Plédel, Catherine; Bureau, Bruno; Petit, Laeticia; Koponen, Joona; Hupa, Leena; Hupa, Mikko; Ferraris, Monica



Heat treatment of Na2O-CaO-P2O5-SiO2 bioactive glasses: densification processes and postsintering bioactivity.  


Because of their excellent bioactivity, bioactive glasses are increasingly diffused to produce biomedical devices for bone prostheses, to face the dysfunctions that may be caused by traumatic events, diseases, or even natural aging. However, several processing routes, such as the production of scaffolds or the deposition of coatings, include a thermal treatment to apply or sinter the glass. The exposure to high temperature may induce a devetrification phenomenon, altering the properties and, in particular, the bioactivity of the glass. The present contribution offers an overview of the thermal behavior and properties of two glasses belonging to the Na2O-CaO-P2O5-SiO2 system, to be compared to the standard 45S5 Bioglass(®). The basic goal is to understand the effect of both the original composition and the thermal treatment on the performance of the sintered glasses. The new glasses, the one (BG_Na) with a high content of Na2O, the other (BG_Ca) with a high content of CaO, were fully characterized and sintering tests were performed to define the most interesting firing cycles. The sintered samples, treated at 880°C and 800°C respectively, were investigated from a microstructural point of view and their mechanical properties were compared to those of the bulk (not sintered) glass counterparts. The effect of sintering was especially striking on the BG_Ca material, whose Vickers hardness increased from 598.9 ± 46.7 HV to 1053.4 ± 35.0 HV. The in vitro tests confirmed the ability of the glasses, both in bulk and sintered form, of generating a hydroxyapatite surface layer when immersed in a simulated body fluid. More accurate biological tests performed on the sintered glasses proved the high bioactivity of the CaO-rich composition even after a heat treatment. PMID:22052581

Sola, A; Bellucci, D; Raucci, M G; Zeppetelli, S; Ambrosio, L; Cannillo, V



Effect of heat treatment on the properties of SiO2-CaO-MgO-P 2O 5 bioactive glasses.  


Since the invention of 45S5 Bioglass, researchers never stopped exploring new generation bioactive glass (BG) materials for wider applications in regenerative medicine, among which a novel SiO(2)-CaO-MgO-P(2)O(5) bioactive glass (BG20) is an excellent candidate. However, apart from their biocompatibility and bioactivity, a porous structure is also a must for a tissue engineering scaffold in successfully fixing bone defect. The porosity is the outcome of the high temperature (500-1,000 °C) treatment in the fabricating process of the bioglass scaffold. Under the high temperature, the amorphous glass material will become crystallized at certain percentage in the glass matrix, and possibly leading to consequent changes in the mechanical strength, biodegradability and bioactivity. To elucidate the effect of phase transition on the change of the properties of BG20, the experiments in this report were designed to fine-tuning the heat treating temperatures to fabricate a series of BG20 powders with different crystallization structures. X-ray diffraction revealed a positive correlation between the heating temperature and the crystallization, as well as the compressive strength of the materials. In vitro degradation and ion analysis by ICP-AES demonstrated a similar releasing behavior of different ions including Mg(2+), Ca(2+) and Si(4+), which in common is the tendency of decreasing of the ion concentration along with the increasing of the treating temperature. Cell proliferation assay using both mouse fibroblasts (NIH3T3) and bone marrow stromal cells (BMSCs) showed little toxicity of the ionic extract of the BG20 powders at all the treating temperatures, while fibroblasts demonstrated a significant promoting in the percentage of proliferation. Furthermore, reverse-transcription and polymerase chain reaction analysis on two representative marker genes for early osteogenesis and endochondral ossification, respectively, type I collagen alpha 1 and Indian Hedge-hog, showed an interesting induction of both genes over their basal levels by the treatment of the ionic extract of BG20, implying its important capability in regulating the fate of differentiation of the BMSCs as a novel biomaterial in bone tissue engineering. PMID:22699712

Zhou, Yue; Li, Hongying; Lin, Kaili; Zhai, Wanying; Gu, Weiming; Chang, Jiang



Role of CaO addition in the local order around Erbium in SiO2GeO2P2O5 fiber preforms F. d'Acapito C. Maurizio  

E-print Network

Role of CaO addition in the local order around Erbium in SiO2­GeO2­P2O5 fiber preforms F. d/crystalline local structure around the Er3+ ion is evidenced. Keywords: Optic fibers; EXAFS; Erbium; Nanoparticles 1. Among the rare earths, erbium is especially interesting because the 4I13/2 - 4I15/2 transition at 1

Boyer, Edmond


Photoluminescence and gamma-RAY Irradiation of SrO-B2O3-P2O5:Eu2+ and SrMoO4:Eu3+ Phosphors  

Microsoft Academic Search

Europium-doped SrO-B2O3-P2O5 and SrMoO4 phosphors for application in white LEDs sources were synthesized and characterized. Photoluminescence spectra showed intense blue and red emissions after UV excitation which can be ascribed to Eu2+ and to Eu3+ respectively. The shape of the blue emission in samples was correlated to the existence of different phases in the Eu2+ doped samples as pointed out

Chaofeng Zhu; Xianling Chen; Shuanglong Yuan; Yunxia Yang; Guorong Chen; S. Baccaro; A. Cecilia; M. Falconieri; L. Seralessandri; M. Bellusci



Understanding the composition-structure-bioactivity relationships in diopside (CaO·MgO·2SiO2)-tricalcium phosphate (3CaO·P2O5) glass system.  


The present work is an amalgamation of computation and experimental approach to gain an insight into composition-structure-bioactivity relationships of alkali-free bioactive glasses in the CaO-MgO-SiO2-P2O5 system. The glasses have been designed in the diopside (CaO·MgO·2SiO2; Di)-tricalcium phosphate (3CaO·P2O5; TCP) binary join by varying the Di/TCP ratio. The melt-quenched glasses have been investigated for their structure by molecular dynamic (MD) simulations as well as by nuclear magnetic resonance spectroscopy (NMR). In all the investigated glasses silicate and phosphate components are dominated by Q(2) (Si) and Q(0) (P) species, respectively. The apatite forming ability of the glasses was investigated using X-ray diffraction (XRD), infrared spectroscopy after immersion of glass powders in simulated body fluid (SBF) for time durations varying between 1h and 14days, while their chemical degradation has been studied in Tris-HCl in accordance with ISO 10993-14. All the investigated glasses showed good bioactivity without any substantial variation. A significant statistical increase in metabolic activity of human mesenchymal stem cells (hMSCs) when compared to the control was observed for Di-60 and Di-70 glass compositions under both basal and osteogenic conditions. PMID:25578990

Kapoor, Saurabh; Semitela, Ângela; Goel, Ashutosh; Xiang, Ye; Du, Jincheng; Lourenço, Ana H; Sousa, Daniela M; Granja, Pedro L; Ferreira, José M F



Effects of Substitution of K2O for Na2O on the Bioactivity of CaO-Na2O-SiO2-P2O5 glasses  

NASA Astrophysics Data System (ADS)

The compositional dependences of bioactivity, thermal properties, atomic structure, and surface morphology have been investigated in the CaO-Na2O-SiO2-P2O5 system; this system is known as a bioglass. 45S5 Bioglass® is known to be a general and highly bioactive material. However, the bioactivity of this glassy material is expected to be improved by modifying the alkali-metal composition. Thermal properties, density, and molar volume were measured to investigate the structural packing. FT-IR spectra and X-ray diffraction were used to confirm the structures of these glasses. The morphology was examined using field emission electron microscopy, and the formation of a Ca-P layer was studied using an energy-dispersive system. This study shows that the tendency to form a calcium phosphate layer is increased with the substitution of K2O for Na2O.

Kim, Taehee; Hwang, Chawon; Gwoo, Donggun; Park, Hoyyul; Ryu, Bong-Ki



Effects of sodium and potassium ions on a novel SeO2-B2O3-SiO2-P2O5-CaO bioactive system  

NASA Astrophysics Data System (ADS)

The study is focused on Na2O and/or K2O influence on a new sol-gel derived SeO2-B2O3-SiO2-P2O5-CaO bioactive system. The structural changes induced by Na2O and/or K2O addition were correlated with the samples behavior in simulated biological media. X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy were used to characterize the structure and the type of the chemical bonds. The morphology of the samples was characterized through scanning electron microscopy (SEM). XRD results pointed out a prevalent vitreous structure with an incipient hydroxyapatite (HA) crystalline phase. FTIR results revealed a complex network consisting of silicate, phosphate and borate units, as well as the development of both A- and B-type of carbonate-substituted HA. The bioactivity of the samples was tested in vitro following the evolution of the apatite layers self-assembled on the samples surface in simulated body fluid. Their biocompatibility was investigated after samples surface functionalization with protein. The results indicate that sodium and potassium addition improves the biocompatibility by enhancement of protein adherence on samples surface and without to prevent the samples bioactivity.

Trandafir, D. L.; Ponta, O.; Ciceo-Lucacel, R.; Simon, V.



Influence of heat treatments upon the mechanical properties and in vitro bioactivity of ZrO2-toughened MgO-CaO-SiO2-P2O5-CaF2 glass-ceramics.  


Zirconia-toughened MgO-CaO-SiO2-P2O5-CaF2 glass-ceramics are prepared using sintering techniques, and a series of heat treatment procedures are designed to obtain a glass-ceramic with improved properties. The crystallization behavior, phase composition, and morphology of the glass-ceramics are characterized. The bending strength, elastic modulus, fracture toughness, and microhardness of the glass-ceramics are investigated, and the effect mechanism of heat treatments upon the mechanical properties is discussed. The bioactivity of glass-ceramics is then evaluated using the in vitro simulated body fluid (SBF) soaking test, and the mechanism whereby apatite forms on the glass-ceramic surfaces in the SBF solution is discussed. The results indicate that the main crystal phase of the G-24 sample undergoing two heat treatment procedures is Ca5(PO4)3F (fluorapatite), and those of the G-2444 sample undergoing four heat treatment procedures are Ca5(PO4)3F and ?-CaSiO3 (?-wollastonite). The heat treatment procedures are found to greatly influence the mechanical properties of the glass-ceramic, and an apatite layer is induced on the glass-ceramic surface after soaking in the SBF solution. PMID:25280855

Li, Huan-Cai; Wang, Dian-Gang; Meng, Xiang-Guo; Chen, Chuan-Zhong



Synthesis, cytotoxicity, and hydroxyapatite formation in 27-Tris-SBF for sol-gel based CaO-P2O5-SiO2-B2O3-ZnO bioactive glasses  

PubMed Central

CaO-P2O5-SiO2-B2O3-ZnO bioactive glasses were prepared via an optimized sol–gel method. The current investigation was focused on producing novel zinc based calcium phosphoborosilicate glasses and to evaluate their mechanical, rheological, and biocompatible properties. The morphology and composition of these glasses were studied using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The particle size, mechanical and flexural strength was also determined. Furthermore, the zeta potential of all the glasses were determined to estimate their flocculation tendency. The thermal analysis and weight loss measurements were carried out using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) respectively. For assessing the in-vitro bioactive character of synthesized glasses, the ability for apatite formation on their surface upon their immersion in simulated body fluid (SBF) was checked using SEM and pH measurements. MTS assay cytotoxicity assay and live-dead cell viability test were conducted on J774A.1 cells murine macrophage cells for different glass concentrations. PMID:24637634

Kaur, Gurbinder; Pickrell, G.; Kimsawatde, G.; Homa, D.; Allbee, H. A.; Sriranganathan, N.



Structural and magnetic properties of SiO2-CaO-Na2O-P2O5 containing BaO-Fe2O3 glass-ceramics  

NASA Astrophysics Data System (ADS)

The incorporation method was employed to produce bioactive glass-ceramics from the BaFe12O19-SiO2-CaO-Na2O-P2O5 glass system. The ferrimagnetic BaFe12O19 was first prepared using a simple mixed oxide method, where the oxide precursors of 45S5 bioglass were initially mixed and then melted to form glass. The devitrification of Na3Ca6(PO4)5 and Fe3O4 was observed in all of the quenched glass samples. The glass samples were then subjected to a heat treatment schedule for further crystallization. It was found that the small traces of BaFe12O19 phases started to crystallize in high BF content samples of 20 and 40 wt%. These samples also exhibited good magnetic properties comparable to that of other magnetic glass-ceramics. The bioactivity of the BF glass-ceramics improved with increasing BF content as was evident by the formation of bone-like apatite layers on the surface of all of the glass-ceramics after soaking in SBF for 14 days. The results support the use of these bioactive glass-ceramics for hyperthermia treatment within the human body.

Leenakul, W.; Kantha, P.; Pisitpipathsin, N.; Rujijanagul, G.; Eitssayeam, S.; Pengpat, K.



Influence of strontium on structure, sintering and biodegradation behaviour of CaO-MgO-SrO-SiO2-P2O5-CaF2 glasses  

SciTech Connect

The present study investigates the influence of SrO on structure, apatite forming ability, physico-chemical degradation and sintering behaviour of melt-quenched bioactive glasses with composition: mol.% (36.07 – x) CaO – x SrO - 19.24 MgO – 5.61 P2O5 – 38.49 SiO2 – 0.59 CaF2, where x varies between 0 – 10. The detailed structural analysis of glasses has been made by infra red spectroscopy (FTIR) and magic angle spinning-nuclear magnetic resonance spectroscopy (MAS-NMR). Silicon was predominantly present as Q2 (Si) species while phosphorus was found in orthophosphate type environment in all the investigated glasses. The apatite forming ability of glasses was investigated by immersion of glass powders in simulated body fluid (SBF) for time durations varying between 1 h – 7 days. While increasing Sr2+/Ca2+ ratio in glasses did not affect the structure of glasses significantly, their apatite forming ability was decreased considerably. Further, physico-chemical degradation of glasses has been studied in accordance with ISO 10993-14 “Biological evaluation of medical devices – Part 14: Identification and quantification of degradation products from ceramics” in Tris HCl and citric acid buffer and the possible implications of ion release profile from glasses in different solutions has been discussed. The addition of strontium in glasses led to a 7-fold decrease in chemical degradation of glasses in Tris-HCl. The sintering of glass powders rendered glass-ceramics (GCs) with varying degree of crystallinity and good flexural strength (98-131 MPa) where the mechanical properties depend on the nature and amount of crystalline phases present in GCs.

Goel, Ashutosh; Rajagopal, Raghu R.; Ferreira, Jose M.



Structural investigation of vanadium ions doped Li2Osbnd PbOsbnd B2O3sbnd P2O5 glasses by means of spectroscopic and dielectric studies  

NASA Astrophysics Data System (ADS)

In the present investigation we report the synthesis of a series of transparent glasses of composition 20Li2Osbnd 20PbOsbnd 45B2O3sbnd (15-x) P2O5: xV2O5 with eight values of x ranging from 0 to 2.5 mol%, and their characterization. X-ray diffraction (XRD) spectra reflected the amorphous nature of the glasses. Optical absorption, electron paramagnetic resonance (EPR) spectra and FTIR study of vanadyl ions in the present glass network have been analyzed. The optical absorption and EPR investigations have revealed that vanadium ions do exist in both V4+ and V5+ states and the redox ratio (V4+/V5+) is observed to increase with the increase in concentration of V2O5. Dielectric properties viz., dielectric constant ??(?), loss tan ?, electrical moduli M?(?), M?(?), a.c. conductivity ?ac over an extensive scale of frequency and temperature have been investigated as a function of V2O5 concentration. The dispersion of dielectric constant ??(?) with temperature has been interpreted by space charge polarization model. The dielectric loss and electrical moduli variation with frequency and temperature exhibited relaxation effects. These effects are ascribed to V4+ ions. The a.c. conductivity of the prepared glasses is perceived to escalate with the hike in V2O5 concentration whereas the activation energy for conduction exhibits a reverse trend. The conductivity mechanism is explained on the basis of polaronic transfer between V4+ and V5+ ions. The low temperature a.c. conductivity mechanism is elucidated by the quantum mechanical tunneling model. The growth in the values of dielectric parameters with raise in the concentration of V2O5 is due to V4+ ions which act as modifiers. The investigation of these results has indicated that at higher concentrations of V2O5, the VO2+ ions in the glasses were present in octahedral sites with tetragonal compression and belong to C4v symmetry.

Yusub, S.; Narendrudu, T.; Suresh, S.; Krishna Rao, D.



Enhanced osteocalcin expression by osteoblast-like cells (MC3T3-E1) exposed to bioactive coating glass (SiO 2–CaO–P 2O 5–MgO–K 2O–Na 2O system) ions  

Microsoft Academic Search

This study tested the hypothesis that bioactive coating glass (SiO2–CaO–P2O5–MgO–K2O–Na2O system), used for implant coatings, enhanced the induction of collagen type 1 synthesis and in turn enhanced the expression of downstream markers alkaline phosphatase, Runx2 and osteocalcin during osteoblast differentiation. The ions from experimental bioactive glass (6P53-b) and commercial BioglassTM (45S5) were added to osteoblast-like MC3T3-E1 subclone 4 cultures as

V. G. Varanasi; E. Saiz; P. M. Loomer; B. Ancheta; N. Uritani; S. P. Ho; A. P. Tomsia; S. J. Marshall; G. W. Marshall



Effect of annealing and replacement of vanadium by Cr(III) and Mn(IV) ions in (V2O5)0.8-(P2O5)0.2 glass on its magnetic susceptibility, electrical conductivity, and dielectric constant  

NASA Astrophysics Data System (ADS)

The effect of heat treatment and substitution of vanadium by other transition metal ions, such as Cr3+ or Mn4+ in (V2O5)0.8-(P2O5)0.2 glass on the electrical conductivity, dielectric constant, dielectric loss, and magnetic susceptibility has been studied over a temperature range of 80-400 K and frequencies of 102-106 Hz. The ac conductivity, ?ac, was found to be increased by annealing and decreased by the replacement of vanadium with Mn4+ or Cr3+ ions. The ?ac value increased with the measuring frequency ? according to ?ac(?)=A(?)s, where s has a value in the range of 0.33-0.48. Dielectric loss ? showed maxima at temperatures depending on the sample composition and the measuring frequency. The magnetic susceptibility ? was found to increase by annealing and by introducing Cr3+ or Mn4+ into glass materials. The results obtained were explained on the basis of a mutual interaction, which is exclusively occurring between double redox pairs during the sample preparation or during the annealing process, to produce a shift in redox ratios. The experimental results were correlated together and discussed.

El-Shaarawy, M. G.



Chemical durability and Structural approach of the glass series (40-y) Na2O-yFe2O3-5Al2O3-55P2O5-by IR, X-ray diffraction and Mössbauer Spectroscopy  

NASA Astrophysics Data System (ADS)

The relationship between the composition and structure for the glasses of general composition (40-y)Na2O-yFe2O3-5Al2O3-55P2O5 (5<=y<=20), has been studied. The chemical durability and density of these glasses increase with increasing Fe2O3 content. The dissolution rate (DR), calculated from the weight loss in distilled water at 90°C for up to 20 days was ? 3.10-9 g/cm2/mn which is 30 times lower than that of window glass. The structure and valence states of the iron ions in the glasses were investigated using, X-ray diffraction, 57Fe Mössbauer spectrometry, potentiometric analysis, and infrared spectroscopy. Both Mössbauer spectrometry and potentiometric analysis allow to estimate both Fe2+ and Fe3+ contents in all these glasses. X-ray diffraction indicates that the local structure of iron phosphate glasses is related to the short range structures of NaFeP2O7. Infrared spectra indicate the formation of P-O-Fe bonds in the pyrophosphate glasses that replace P-O-Na bonds. The presence of a small content of Al2O3 in the glass seems to play a role as a network modifier. The addition of Fe2O3 to Al2O3 in phosphate glasses favours the enhancement of the formation of pyrophosphate units because iron ions have stronger effect on the depolymerization of metaphosphate chains than the aluminium ions. Finally, the I.R spectra indicate that the presence of P-O-Fe bands of these glasses containing more than 15 mol%Fe2O3 is consistent with their good chemical durability.

Aqdim, S.; Sayouty, El H.; Elouad, B.; Greneche, J. M.



Biocompatibility property of 100% strontium-substituted SiO2 -Al2 O3 -P2 O5 -CaO-CaF2 glass ceramics over 26 weeks implantation in rabbit model: Histology and micro-Computed Tomography analysis.  


One of the desired properties for any new biomaterial composition is its long-term stability in a suitable animal model and such property cannot be appropriately assessed by performing short-term implantation studies. While hydroxyapatite (HA) or bioglass coated metallic biomaterials are being investigated for in vivo biocompatibility properties, such study is not extensively being pursued for bulk glass ceramics. In view of their inherent brittle nature, the implant stability as well as impact of long-term release of metallic ions on bone regeneration have been a major concern. In this perspective, the present article reports the results of the in vivo implantation experiments carried out using 100% strontium (Sr)-substituted glass ceramics with the nominal composition of 4.5 SiO2 -3Al2 O3 -1.5P2 O5 -3SrO-2SrF2 for 26 weeks in cylindrical bone defects in rabbit model. The combination of histological and micro-computed tomography analysis provided a qualitative and quantitative understanding of the bone regeneration around the glass ceramic implants in comparison to the highly bioactive HA bioglass implants (control). The sequential polychrome labeling of bone during in vivo osseointegration using three fluorochromes followed by fluorescence microscopy observation confirmed homogeneous bone formation around the test implants. The results of the present study unequivocally confirm the long-term implant stability as well as osteoconductive property of 100% Sr-substituted glass ceramics, which is comparable to that of a known bioactive implant, that is, HA-based bioglass. © 2014 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2014. PMID:25303146

Basu, Bikramjit; Sabareeswaran, A; Shenoy, S J



Reflexión bioética sobre el uso de organismos genéticamente modificados  

PubMed Central

El presente artículo reflexiona desde los 4 principios de la bioética el uso comercial de organismos genéticamente modificados. Se cuestiona fundamentalmente la falta de transferencia de tecnología entre el mundo desarrollado y en desarrollo y el que el presente sistema de patentamiento de organismos vivos modificados fomenta intereses comerciales y no da debida importancia al desarrollo sostenible de la agricultura y ganadería en los países en desarrollo, donde más se necesita. Se reflexiona sobre la importancia que tiene evaluar los riesgos antes de introducirse en el mercado organismos genéticamente modificados y la necesidad de regulación en los países. PMID:21927675

Yunta, Eduardo Rodríguez



Transport properties of PbO-P2O5-ZnO-Li2O glass system  

NASA Astrophysics Data System (ADS)

The electrical conductivity of Li+ ion conducting lead zinc phosphate glasses have been carried out both as a function of temperature and frequency in the temperature range 458-510K and over frequencies 40 Hz to 10 MHz. The dc conductivities show Arrhenius behavior and show compositional dependence. The ? decreases with increase in Li2O content. The ac conductivity behavior has been analyzed using Almond-West power law using a single exponent. The exponent 's' obtained from the power law fits is found to have values ranging from 0.74 - 0.80 in these glasses and shows moderate temperature dependence, which is attributed to high degree of modification in the glass network.

Lakshmikantha, R.; Rajaramakrishna, R.; Ayachit, N. H.; Anavekar, R. V.



Nanostructural features and optical properties of Na 2O-P 2O 5-AgCl thin films  

NASA Astrophysics Data System (ADS)

Sodium phosphate glass systems with AgCl as dopant (0 and 15 mol%) have been synthesized by melt-quenching technique. The glasses in bulk form were characterized by X-ray diffraction, FT-IR spectroscopy and their thermal and electrical properties were investigated. These glasses were deposited on glass substrates by thermal evaporation method in thin film form and annealed at 600 °C. The influence of deposition in thin film form and annealing on structure and optical properties (transmittance, absorbance and optical gap) have showed that both doped and undoped as-deposited glass films have a porous, granular structure and considerable grain coarsening and densification occur upon annealing at 600 °C. The optical transmittance of the film is found to decrease in visible region as a function of annealing and doping. The annealed 15 mol% doped film shows a prominent absorbance peak at 430 nm, which is ascribed to Ag +(5s) ? O( n) electronic transitions.

Singh, Punita; Deepa, M.; Srivastava, A. K.; Sood, K. N.; Kar, M.



Na 2CaSi 2O 6–P 2O 5 based bioactive glasses. Part 1: Elasticity and structure  

Microsoft Academic Search

The glass structure and elastic properties of two bioglasses having bulk compositions near Na2CaSi2O6 (45S5.2) and Na2CaSi3O8 (55S4.1) were studied using both Raman and Brillouin scattering techniques. The annealed 45S5.2 glass has more Q2 and Q0 but less Q3 species than 55S4.1 glass due to lower (Si4++P5+)\\/(Na++Ca2+) ratio. Brillouin scattering measurements of the as-annealed glasses indicated that 45S5.2 glass is

Chung-Cherng Lin; Li-Chen Huang; Pouyan Shen




PubMed Central

En la investigación con animales existen cuestionamientos éticos tanto en el uso como modelos de enfermedades humanas y requisito previo para ensayos en humanos como en la introducción de modificaciones genéticas. Algunos de estos cuestionamientos son: no representar exactamente la condición humana como modelos, realizar pruebas de toxicidad con grave daño para los animales, alterar su naturaleza mediante modificaciones genéticas, riesgos de la introducción de organismos genéticamente modificados. El uso de animales en investigación para beneficio humano, impone al ser humano la responsabilidad moral de respetarlo, no haciéndoles sufrir innecesariamente, al estar trabajando con seres vivientes y sentientes. PMID:23338641

Yunta, Eduardo Rodríguez



Phase relations in the MgO–P 2 O 5 –H 2 O system and the stability of phosphoellenbergerite: petrological implications  

Microsoft Academic Search

The polymorphic relations for Mg3(PO4)2 and Mg2PO4OH have been determined by reversed experiments in the temperature-pressure (T-P) range 500–1100?°C, 2–30 kbar. The phase transition between the low-pressure phase farringtonite and Mg3(PO4)2-II, the Mg analogue of sarcopside, is very pressure dependent and was tightly bracketed between 625?°C, 7 kbar and 850?°C,\\u000a 9 kbar. The high-temperature, high-pressure polymorph, Mg3(PO4)2-III, is stable above

Fabrice Brunet; Christian Chopin; Friedrich Seifert



Influence of rare earth addition on the thermal and structural stability of CaOsbnd Fe2O3sbnd P2O5 glasses  

NASA Astrophysics Data System (ADS)

The thermal and structural stability of calcium iron phosphate glasses doped with rare earth oxides has been studied by investigating differential scanning calorimetry, the concentration of modified ions in leachate, Fourier transform infrared spectra, and Raman spectra. The results showed that thermal stability of the rare earth phosphate glasses increased and the release rate of rare earth ions in leachate decreased with the increase of cationic field strength. It related to the known structural units and characteristic bands of these glasses detected by infrared and Raman spectra. Metaphosphate chains by the cross-links of calcium ions and Psbnd Osbnd P linkages were easier to hydrolyze, which converted to orthophosphate units after corrosion. The formation of more chemically resistant REsbnd Osbnd P bonds with the addition of rare earth leaded to an increased quantity of nonbridging oxygen, which caused consequent variations in the chemical durability of rare earth glasses.

Li, Haijian; Liang, Xiaofeng; Wang, Cuiling; Yu, Huijun; Li, Zhen; Yang, Shiyuan



Role of CaO addition in the local order around Erbium in SiO2 ?GeO2 ?P2O5 fiber preforms  

E-print Network

The development of materials for optical signal processing represents a major issue in present technology. In this contribution we present a study on Er-doped fiber preforms where particular attention is devoted on how the addition of CaO in the glass modifies the local environment of the rare earth. The results from photoluminescence and Extended X-ray Absorption Fine Structure (EXAFS) are compared and a clear link between the width of the emission line at 1.5 $\\mu$m and the amorphous/crystalline local structure around the Er3+ ion is evidenced.

D'Acapito, Francesco; Paul, M C; Lee, Thomas Sebastian; Blanc, Wilfried; Dussardier, Bernard; 10.1016/j.mseb.2007.09.079



Partitioning of Nb, Mo, Ba, Ce, Pb, Th and U between immiscible carbonate and silicate liquids: Evaluating the effects of P2O5,F, and carbonate composition  

NASA Technical Reports Server (NTRS)

Previously we have reported carbonate liq./silicate liq. partition coefficients (D) for a standard suite of trace elements (Nb, Mo, Ba, Ce, Pb, Th, and U) and Ra and Pa as well. In brief, we have found that immiscible liquid partitioning is a strong function of temperature. As the critical temperature of the carbonate-silicate solvus is approached, all partition coefficients approach unity. Additionally, for the overwhelming majority of the partitioning elements, InD is a linear function of 'ionic field strength,' z/r, where z is the charge of the partitioned cation and r is its ionic radius.

Jones, J. H.; Walker, D.



The effect of WO3 dopant on the structural and optical properties of ZnO-P2O5 glass and the effect of gamma irradiation  

NASA Astrophysics Data System (ADS)

Zinc phosphate glasses doped with different ratios of tungsten trioxide were prepared. Optical and infrared absorption spectra were investigated before and after subjecting the glasses to 80 kGy gamma ray dose. The base undoped zinc phosphate glass shows strong and broad UV absorption band centered at about 240 nm but with no visible bands. The WO3-doped glasses reveal the same UV absorption bands beside extra three bands at 330, 380 and 575 nm which are related to the presence tungsten ions in the pentavalent state. Infrared absorption spectra show characteristic variable phosphate groups with limited variations when introducing WO3 in the doping level up to 0.75%. Electron spin resonance measurements of the selected high doped tungsten glass indicate that mixed penta- and hexa-valent states of the tungsten ions and on gamma irradiation the pentavalent increases. The result supports the optical absorption after gamma irradiation which involves photochemical reactions in the UV region and the transformation of some W6+ to W5+ by absorbing electrons during the irradiation process.

Abdelghany, A. M.; Hammad, Ahmed H.



Bi2O3-CuO-P2O5 system: Two novel compounds built from the intergrowths oxocentered polycationic 1D-ribbons  

NASA Astrophysics Data System (ADS)

Single crystals of two novel bismuth copper oxyphosphates were grown from a unique melt. They have been structurally characterized by means of single crystal X-Ray Diffraction (XRD). Bi29.4Cu9.29O32(PO4)16Cu2.63 (1) is orthorhombic, space group Pca21, a=33.0549(2)?, b=11.6991(4)? and c=5.2902(2)?, R1=0.059 and wR2=0.061. Bi37.2Cu18.8O44(PO4)24Cu5 (2) is orthorhombic, space group Pna21, a=11.6010(3)?, b=47.4384(5)? and c=5.267(2)?, R1=0.0940 and wR2=0.0981. Both compounds are formed of similar 1D building units (BUs) organized into two different 3D regular intergrowths mediated by phosphate groups. Here, the so-called 1D-BUs are infinite ribbons formed by edge-sharing O(Bi,M)4 tetrahedra with n=4 and n=3 tetrahedra-wide units. Both compounds were analyzed from the viewpoint of their relationship with the parent ?-Bi2O3 fluorite-like structure, where phosphorus atoms substitutes for some Bi sites. A non-exhaustive review of the related structural types is given. We have checked by second harmonic generacy (SHG) microscopy that the two non-centrosymmetric structures (despite polar subunits) lead to SHG before the samples are irreversibly damaged.

Colmont, Marie; Endara, Diana; Aliev, Almaz; Terryn, Christine; Huvé, Marielle; Mentré, Olivier



Optical character of Er 3+\\/Yb 3+ co-doped P 2O 5–CaO–Na 2O–Al 2O 3–AgO phosphate glass  

Microsoft Academic Search

The up-conversion (UC) and near infrared (NIR) luminescence of Er3+\\/Yb3+ co-doped phosphate glass are investigated. In the UC emission range, the 523nm, 546nm green emissions and the 659nm red emission are observed. With the increasing pump power, the intensity ratios of I523\\/I659, I546\\/I659 and I523\\/I546 increase gradually. The phenomenon is reasonably interpreted by theoretical analysis based on steady state rate

Chengguo Ming; Feng Song; Yin Yu; Gong Zhang; Qingru Wang; Hua Yu; Tongqing Sun; Jianguo Tian



Diopside (CaO-MgO-2SiO2)-fluorapatite (9CaO-3P2O5-CaF2) glass-ceramics: Potential materials for bone tissue engineering  

SciTech Connect

Glass-ceramics in the diopside (CaMgSi2O6) - fluorapatite [Ca5(PO4)3F] system are potential candidates for restorative dental and bone implant materials. In the present study, a series of glasses along diopside - fluorapatite binary system have been prepared with varying diopside/fluorapatite ratios for their potential applications in bone tissue engineering. The glasses were obtained from compositions with fluorapatite contents varying between 0-40 wt.%. The sintering ability and crystallization kinetics of as obtained amorphous glasses have been studied through hot-stage microscopy (HSM) and differential thermal analysis (DTA), respectively while crystalline phase evolution in sintered GCs has been followed by X-ray diffraction (XRD) adjoined with Rietveld-R.I.R. technique and scanning electron microscopy (SEM). Further, biodegradation and apatite forming ability of glass-ceramics were investigated by immersion of glass-ceramic discs in simulated body fluid (SBF) solution while chemical degradation and weight loss of glass-ceramics were studied by immersion in Tris-HCl in accordance with standard ISO 10993-14. The addition of fluorapatite (10-25 wt.%) in diopside glass system significantly enhanced the sintering ability of glass-ceramics and improved their apatite forming ability along with their biodegradation behaviour. Moreover, the in vitro cellular responses to glass-ceramics showed good cell viability and significant stimulation of osteoblastic differentiation, suggesting the possible use of the glass-ceramics for bone regeneration.

Kansal, Ishu; Goel, Ashutosh; Tulyaganov, Dilshat U.; Pascual, Maria J.; Lee, Hye-Young; Kim, Hae-Won; Ferreira, Jose M.



Theoretical Analysis of the Triplet Excited State of the [Pt2(H2P2O5)4]4-Ion and Comparison with Time-Resolved X-ray  

E-print Network

Coppens* Contribution from the Department of Chemistry, State UniVersity of New York at Buffalo, Buffalo, New York 14260-3000 Received July 25, 2002 ; E-mail: Abstract: A full a lifetime of 9-10 µs in water and acetonitrile solutions, and a high quantum yield (r ) 0

Coppens, Philip


Surface reactions of a plasma-sprayed CaO-P2O5-SiO2-based glass with albumin, fibroblasts and granulocytes studied by XPS, fluorescence and chemiluminescence.  


X-ray photoelectron spectroscopy (XPS) was used to define the chemical composition of the outermost surface layer and the surface modification of a plasma-coated phospho-silicate glass (identified as BVA) when immersed in K-phosphate buffer or in phosphate buffered human albumin solution. Its behavior was compared with that of a soda-lime-based glass (identified as BVH) treated in the same way. The surface % composition of plasma-sprayed glass was consistent with bulk composition. After incubation with buffer, a Ca-P-rich layer developed only on the surface of BVA glass. Human serum albumin was bound reversibly to both glasses maintaining its native state. However, the protein completely covered the BVA glass surface within 24 h, with the formation of a mixed albumin-Ca-P layer, while 4 days incubation was necessary for complete coverage of BVH glass surface. Murine fibroblasts seeded on plasma-coated BVA glass showed a proliferation pattern similar to that of control cells grown on Petri dish, while cells seeded on BVH had more restricted growth. A limited response was induced in polymorphonuclear granulocytes by both bulk glasses powder. In conclusion, the glass identified as BVA has the suitable characteristics of its surface layers to be considered biologically active from both a chemical and a cellular point of view. PMID:10885725

Polzonetti, G; Iucci, G; Frontini, A; Infante, G; Furlani, C; Avigliano, L; Del Principe, D; Palumbo, G; Rosato, N



Conversación con Ricardo Monti  

E-print Network

las carreras sucedía lo siguiente: yo quería ser e iba a ser escritor. Empecé filosofía y cursé seis o siete materias. Luego inicié la carrera de psi cología, pero mis estudios de psicología se interrumpieron cuando estrené mi primera obra de teatro... caos, organizar una serie de sensaciones e ideas, que impliquen cierta forma, cierta organización. Además, cada obra mía se empalma con la otra, como si yo buscara obscuramente no solamente organizar ese caos en cada obra, sino ir organizándolo con...

Driskell, Charles B.



Entrevista con Enrique Buenaventura  

E-print Network

, era muy terrible ya, realmente muy feroz, esta escalada somocista. En tonces, la respuesta también fue tan firme que empezó a desmoralizar a la Guardia. Te contaré un caso. En Masalla, en el mercado, las vendedoras nos contaron cómo se había... refugiado allí la Guardia, muy bien armada, con mucho parque y resultaba muy difícil sacarla de allí. Entonces las mismas mujeres del mercado, que había sido anteriormente bombardeado, salieron en grupo y fueron a tocar a la puerta donde estaba metida la...

Dí ez, Luys A.



Entrevista con José Triana  

E-print Network

cenagoso. ¿Tú has visto a esos equilibristas que atraviesan de un lado a otro en un circo, en una cuerda floja? Y tú los ves que van pasando. . . . Pues eso yo creo que es una de las definiciones que podría plantearme o replantearme con la escritura... es su teoría del distanciamiento . . . Eso me interesa mucho, y sobre todo distanciamiento en el sentido de la representación. La obra de Ramón del Valle-lnclán es totalmente distinta de la obra de Bertolt Brecht, y sin embargo tienen un punto...

Vasserot, Christilla



Planificación Neuroquirúrgica con Software Osirix  

PubMed Central

Introducción: La individualidad anatómica es clave para reducir el trauma quirúrgico y obtener un mejor resultado. Actualmente, el avance en las neuroimágenes ha permitido objetivar esa individualidad anatómica, permitiendo planificar la intervención quirúrgica. Con este objetivo, presentamos nuestra experiencia con el software Osirix. Descripción de la técnica: Se presentan 3 casos ejemplificadores de 40 realizados. Caso 1: Paciente con meningioma de la convexidad parasagital izquierda en área premotora; Caso 2: Paciente con macroadenoma hipofisario, operada previamente por vía transeptoesfenoidal en otra institución con una resección parcial; Caso 3: Paciente con lesiones en pedúnculo cerebeloso medio bilateral. Se realizó la planificación prequirúrgica con el software OsiriX, fusionando y reconstruyendo en 3D las imágenes de TC e IRM, para analizar relaciones anatómicas, medir distancias, coordenadas y trayectorias, entre otras funciones. Discusión: El software OsiriX de acceso libre y gratuito permite al cirujano, mediante la fusión y reconstrucción en 3D de imágenes, analizar la anatomía individual del paciente y planificar de forma rápida, simple, segura y económica cirugías de alta complejidad. En el Caso 1 se pudo analizar las relaciones del tumor con las estructuras adyacentes para minimizar el abordaje. En el Caso 2 permitió comprender la anatomía post-operatoria previa del paciente, para determinar la trayectoria del abordaje transnasal endoscópico y la necesidad de ampliar su exposición, logrando la resección tumoral completa. En el Caso 3 permitió obtener las coordenadas estereotáxicas y trayectoria de una lesión sin representación tomográfica. Conclusión: En casos de no contar con costosos sistemas de neuronavegación o estereotáxia el software OsiriX es una alternativa a la hora de planificar la cirugía, con el objetivo de disminuir el trauma y la morbilidad operatoria. PMID:25165617

Jaimovich, Sebastián Gastón; Guevara, Martin; Pampin, Sergio; Jaimovich, Roberto; Gardella, Javier Luis



Quick Chili Con Carne Ingredients  

E-print Network

Quick Chili Con Carne Ingredients: 16 ounces kidney beans, canned 1 pound ground turkey 1/2 onion 1 is cooking, cut the ends off of the onion, and peel off the brown layers. Cut onion in half and place flat side down. Slice into thin strips keeping onion together. Turn and slice again to dice. 4. Slice green

Liskiewicz, Maciej




In 2012, USA Preventive Services Task Force revised the guidelines for prostate cancer screening and recommended against prostate specific antigen(PSA)-based screening for prostate cancer for all age groups. This revision had a great impact worldwide. Immediately after the announcement, many expert societies expressed disagreement with this revision, but some of these have gradually come to accept it. When multiple organizations develop guidelines for a particular topic, the recommendations may differ. In this regard, the "standards for developing trustworthy clinical practice guidelines" presented in the report by the Institute of Medicine, will be helpful. The number of cases and the incidence rates of prostate cancer have been rapidly increasing in Japan, especially in the elderly population. Accordingly, sufficient information needs to be provided for appropriate decision-making, considering the balance between the risks and benefits, if cancer screening in the elderly population is to be implemented. PMID:24917002

Sobue, Tomotaka



Computacion inteligente con organismos vivos  

E-print Network

resoluci´on. 2 / 37 #12;Computaci´on y M´aquinas ... VIVAS e INTELIGENTES 3 / 37 #12;Modelo de computaci tediosas... ... y otras tareas inteligentes. 7 / 37 #12;M´aquinas de prop´osito espec´ifico Desde el ´abacoComputaci´on inteligente con organismos vivos Mario de Jes´us P´erez Jim´enez Grupo de Investigaci

Jiménez, Mario de J. Pérez


todasuvida: Las personas con diabetes son ms  

E-print Network

diabetes Controlesu todasuvida: Las personas con diabetes son más propensas a padecer de enfermedades del corazón que quienes no tienen diabetes. Boletín 631 D Las personas con diabetes tienen mayor- res relacionados con la diabetes, como derrame cerebral, mala circulación en las piernas y pies e


Una tarde con Héctor Mendoza  

E-print Network

hay más. Mira, realmente, les voy a contar. Lo que me sucede ahora es que me he preocupado terriblemente por la teoría de la actuación, y lo que estoy haciendo son textos teóricos sobre la actuación. Ahora lo que hago es una obra mezclada con la... teoría de la actuación. Siento que tomar un texto de los Siglos de Oro, que son textos que ya me son muy familiares, entonces, se me facilita muchísimo más para su manejo; en este sentido, ¿no? Ahora, yo siento que se me facilita también tomar un texto...

Padró n-Leó n, Bá rbara A.; Peale, C. George



¡Truco Con Agua!  

NSDL National Science Digital Library

En esta actividad los aprendices aprenderán un truco de magia donde la magia es la presión del aire. Los participantes tomarán un vaso de agua medio lleno y lo taparán con un pedazo de plástico o cartón. Sosteniendo la tarjeta contra el vaso, lo voltearán boca abajo y cuando quiten la mano debajo del vaso, ¡abracadabra! no se caerá el agua. En la tira cómica, Mateo explica a los aprendices que la presión que hace el aire en todas las direcciones es la que sostiene la tarjeta.

Science, Lawrence H.



Opciones de cirugía para mujeres con CDIS o con cáncer de seno

Contiene información sobre los tipos de cirugía de seno, como la operación para conservar el seno y la mastectomía, y ayuda a las mujeres diagnosticadas con CDIS o con cáncer de seno a decidir cuál cirugía es la más conveniente para ellas.



Microsoft Academic Search

Resumen Evaluamos retrospectivamente a 73 adultos inmunocompetentes que consultaron entre marzo de 1999 y marzo de 2004 a un centro infectológico ambulatorio por fiebre y astenia, con elevación discreta de las transaminasas y serología compatible con infección reciente por citomegalovirus (CMV). Excluimos a pacientes con antecedentes de transfusiones, adicciones e inmunodeficiencias, así como aquellos con altera- ciones hepáticas preexistentes o



iCons, 2011 Cholera in Haiti  

E-print Network

© iCons, 2011 Cholera in Haiti Handouts: 1. 1-page explainer of cholera outbreak in Haiti Assignments Part 1: Developing an Explainer 1. In-class written assignment of societal challenge with cholera in Haiti 2. In-class written assignment of scientific investigation relating to cholera 3. Take

Auerbach, Scott M.


InterCon Travel Health: Case B  

ERIC Educational Resources Information Center

InterCon provides services to health insurers of foreign tourists who travel to the United States and Canada. Management wants to implement a new information system that will deal with several operational problems, but it is having difficulty securing the capital resources to fund the system's development. After an initial failure, the chief…

Truman, Gregory E.; Pachamanova, Dessislava A.; Goldstein, Michael A.



CON Advising Academic Year 2013-2014  

E-print Network

' personal, academic, and career goals. This advisor/student partnership requires participationCON Advising Academic Year 2013-2014 Advisors: Rita Tower Kelly Fanning Office: Garrand 403 Garrand students to make decisions about their academic, personal and professional pathways, and to encourage

Carter, John


LA MAESTRA EN CIENCIAS (NEUROBIOLOGA), Con el objetivo de formar profesionales con conocimientos slidos de los  

E-print Network

LA MAESTRÍA EN CIENCIAS (NEUROBIOLOGÍA), Con el objetivo de formar profesionales con conocimientos, neurociencias, psicobiología, física, matemáticas, estadística y metodología de la ciencia, a presentar su Nacional de Posgrado de Calidad del Consejo Nacional de Ciencia y Tecnología en categoría: COMPETENTE

Islas, León


Insercin y fusin con listas ordenadas: un ejemplo de razonamiento automtico con ACL2  

E-print Network

Inserción y fusión con listas ordenadas: un ejemplo de razonamiento automático con ACL2 F. Palomo formales, razonamiento automático, len- guaje de programación aplicativo, ACL2, NQTHM Resumen En este artículo presentamos un ejercicio de formalización y demostración automática en ACL2, un sistema de

Alonso, José A.


Watch Globally, Think Locally CON-CAN Movie Festival  

E-print Network

CORTO TOKYO 2010 Watch Globally, Think Locally 12 18 12 19 12 20 70 CON-CAN Movie Festival CON-CAN Movie Festival Presents #12;90 COMPETITION 1 : Play Expression COMPETITION 2 : Twilight TOKYO 2010 CON-CAN Movie Festival 151-0051 4-14-4 SK 4F Tel: 03-5414-6532 E-mail : cortokyo

Kasahara, Hironori


Feature Speci cation and Automatic Con ict Detection  

E-print Network

Feature Speci#12;cation and Automatic Con ict Detection #3; Amy P. Felty y Kedar S. Namjoshi School of automatically detecting feature con icts (\\undesirable inter- actions") at the speci#12;cation stage. Early con ict detection can help prevent costly and time-consuming problem #12;xes during implementa- tion

Felty, Amy


The evolution of female mate choice by sexual con ict  

E-print Network

The evolution of female mate choice by sexual con ict Sergey Gavrilets1* , Go« ran Arnqvist2 a quantitative genetic model showing that sexual con£ict over mating indeed results in the joint evolution. Keywords: sexual selection; sexual con£ict; evolution of female mate choice; mathematical models 1

Gavrilets, Sergey


Too Many Minas Spoil The Con  

E-print Network

1 12:08 pm February 13th, 2007 vuirneen A semi-private email to Mina de Malfois Is anyone familiar with the writings of mina_de_malfois? I wrote this email to her, based entirely on her Minaverse, between... midnight and two am last night and I just wanted someone to check it before I send it to her. Too Many Minas Spoil The Con Dear Mina, I'm not quite sure how to start this letter. I feel as though I've failed a test of some kind and that if I only...



Enriquecimiento del pienso de dorada con quitina y paredes de levaduras con fines preventivos  

Microsoft Academic Search

Preventive dietary supplements of chitin and yeast wall in gilthead seabream To determine the immunomodulatory effect of the dietary intake of commercial chitin and yeast cell walls in gilthead seabream, Sparus auratus Linnaeus, 1758, specimens were fed diets containing different con- centrations of chitin or yeast cell walls for 1, 2, 4 or 6 weeks. Subsequently, their main humoral (lysozyme

A. Rodríguez; M. A. Esteban; A. Cuesta; J. Ortuño; J. Polaina; J. Meseguer


Con ict-free colorings J anos Pach  

E-print Network

Con ict-free colorings J#19;anos Pach G#19;eza T#19;oth Abstract A coloring of the elements of a planar point set P is said to be con ict-free if, for every closed disk D whose intersection with P, and Smorodinsky by showing that any con ict-free coloring of every set of n points in the plane uses at least c

Pach, János



Microsoft Academic Search

SUMMARY Ecuadorian food canning industry concerned for this provider's production, principally Baby Corn, has envisioned the necessity to find a new yellow corn genotype (Zea mays L.). Consequently, four genotypes of yellow corn were evaluated; Brasilia, SV1035, DK 5005 and INIAP 180, with three levels of nitrogen and phosphorous fertilization (0 kg\\/ha, 40 kg P2O5 con 16 kg nitrógeno y


Tiene familiares con Alzheimer? La Escuela de Medicina del Recinto de Ciencias Mdicas en colaboracin con la Universidad de Columbia  

E-print Network

¿Tiene familiares con Alzheimer? 25/1/2008 La Escuela de Medicina del Recinto de Ciencias Médicas más con Alzheimer para participar de un estudio genético. La investigación pretende encontrar genes que se encuentren relacionados a la enfermedad de Alzheimer con el propósito de aprender más sobre las

Quirk, Gregory J.


October 6, 1997 ITER L-Mode Con nement Database  

E-print Network

October 6, 1997 ITER L-Mode Con nement Database S.M. Kaye and the ITER Con nement Database Working Group Abstract This paper describes the content of an L-mode database that has been compiled with data, and Tore-Supra. The database consists of a total of 2938 entries, 1881 of which are in the L-phase while



E-print Network

VENTAJAS DEPORTIVAS ENTIDADES COLABORADORAS CON EL SERVICIO DE DEPORTES WHITE PEPPER Pub DEPORTES #12;Alicante C.F. universitaria que sean titulares de la TIU. Organización conjunta de actividades Universitarios que anualmente convoca el Consejo Superior de Deportes, a aquellos jugadores que cumplan con los

Escolano, Francisco


RoboCon: A general purpose telerobotic control center  

SciTech Connect

This report describes human factors issues involved in the design of RoboCon, a multi-purpose control center for use in US Department of Energy remote handling applications. RoboCon is intended to be a flexible, modular control center capable of supporting a wide variety of robotic devices.

Draper, J.V.; Noakes, M.W. [Oak Ridge National Lab., TN (United States). Robotics and Process Systems Div.; Schempf, H. [Carnegie Mellon Univ., Pittsburgh, PA (United States); Blair, L.M. [Human Machine Interfaces, Inc., Knoxville, TN (United States)



Control del dolor: Apoyo para las personas con cáncer

Contiene información sobre las medicinas contra el dolor para pacientes con cáncer, los planes para controlarlo, cómo hablar con su equipo de atención médica sobre el dolor que usted siente y qué hacer para controlar los efectos físicos y emocionales del mismo.


-okfl ^ ORNL/CON-172 Linear Harmonic Analysis of Free-  

E-print Network

-okfl ^ ORNL/CON-172 OAK RIDGE NATIONAL LABORATORY Linear Harmonic Analysis of Free- Piston. #12;ORNL/CON-172 Engineering Technology Division* LINEAR HARMONIC ANALYSIS OF FREE-PISTON STIRLING/dynamic problem that is associated with a free-piston Stirling engine (FPSE). The governing equations

Oak Ridge National Laboratory


Introduzione alla programmazione client-side (con Javascript)  

E-print Network

1 MODULO 2 PARTE 4 Introduzione alla programmazione client-side (con Javascript) Goy - a.a. 2009/2010 Programmazione Web client side (con Javascript) 1 · Javascript è un linguaggio di scripting, tipicamente Javascript · Come tutti i linguaggi di scripting, è interpretato: il sorgente non deve essere compilato per

Goy, Anna


Introduzione alla programmazione client-side (con Javascript)  

E-print Network

1 MODULO 2 PARTE 4 Introduzione alla programmazione client-side (con Javascript) Goy - a.a. 2012/2013 Programmazione Web client side (con Javascript) 1 Il fil rouge del MODULO 2 PARTE 4: Introduzione alla progr. client-side · Javascript · DOM e gestori di eventigli oggetti del DOM... PARTE 5: Programmare sul Web 2

Goy, Anna


Introduzione alla programmazione client-side (con Javascript)  

E-print Network

1 MODULO 2 PARTE 4 Introduzione alla programmazione client-side (con Javascript) Goy - a.a. 2011/2012 Programmazione Web client side (con Javascript) 1 Il fil rouge del MODULO 2 PARTE 4: Introduzione alla progr. client-side · Javascript · DOM e gestori di eventigli oggetti del DOM... PARTE 5: Programmare sul Web 2

Goy, Anna


Introduzione alla programmazione client-side (con Javascript)  

E-print Network

1 MODULO 2 PARTE 4 Introduzione alla programmazione client-side (con Javascript) Goy - a.a. 2010/2011 Programmazione Web client side (con Javascript) 1 · Javascript è un linguaggio di scripting, tipicamente Javascript · Come tutti i linguaggi di scripting, è interpretato: il sorgente non deve essere compilato per

Goy, Anna


Con Edison Commercial and Industrial Energy Efficiency Program  

E-print Network

1 Con Edison Commercial and Industrial Energy Efficiency Program Discussion Overview ? Benefits, Eligibility & Team Members ? Program Components ? Project Incentives & Energy Studies ? Additional Program Attributes, Tools & Resources... ? Process Overview ? FAQ ? Q&A 2 Benefits For the Con Edison Customer ? Reduced Replacement Costs ? Identify EE Opportunities ? Reduced Operating Costs ? Infrastructure/Value Enhancements ? Carbon Footprint Reduction ? Codes/LEED/Energy Star...

Pospisil, D.



Breath Analysis Science at PittCon 2012, Orlando, Florida  

EPA Science Inventory

Breath analysis science was featured in three organized sessions at this year?s Pittsburgh Conference and Exposition, or ?PittCon 2012? ( As described in previous meeting reports, PittCon is one of the largest international conferences for analytical chem...


Cálculos ab initio con correlación electrónica  

NASA Astrophysics Data System (ADS)

Estamos entrando en una era donde la ortogonalidad entre las investigaciones de carácter experimental y de naturaleza teórica se irá difuminando progresivamente y la problemática a resolver quedará en escena como el único actor principal de la obra. Como premisa para una cooperación teórico-experimental de igual a igual, la metodología químico-cuántica utilizada debe ser capaz de ofrecer resultados de carácter predictivo. Sin duda, esta madurez en la metodología químico-cuántica ya la hemos alcanzado hace algunos años, tal y como muestra entre otras muchas, la labor que nuestro grupo ha realizado en el transcurso de la última década, dentro del campo de la Espectroscopía Teórica. Los estudios realizados comprenden una amplia gama de sistemas, variando tanto en tamaño como en complejidad, abordando problemáticas espectroscópicas consideradas tradicionalmente como especialmente controvertidas. Nuestra contribución científica más relevante reside en el carácter cuantitativo de las asignaciones espectroscópicas que hemos propuesto en base a resultados ab initio. Recordemos que en los años noventa los resultados ab initio solían presentar para las energías de excitación de sistemas de tamaño molecular moderado, como el benceno, errores de más de 1 eV. En comparación con el éxito relativo de los métodos semiempíricos, la frustración de la metodología ab initio quedaba todavía más patente. Los estudios que hemos presentado representan una comprensión profunda de los espectros electrónicos en sistemas orgánicos claves, mostrando el camino a seguir para obtener asignaciones espectroscópicas precisas (entre 0.1-0.2 eV). La naturaleza del método CASPT2 junto al diseño de estrategias computacionales nos ha permitido alcanzar el carácter cuantitativo con el que se caracterizan nuestras contribuciones[1,2]. Por todo ello, algunos de los trabajos publicados se consideran clásicos dentro del campo, pues en cierto modo definen el campo, y se reflejan en libros publicados recientemente. En la conferencia se analizarán ciertos pormenores de las investigaciones realizadas. El tipo de aplicaciones llevadas a cabo hasta la fecha se ilustrará mediante el estudio teórico del espectro electrónico de ciclooctatetraeno. Dando un paso más en la evolución de nuestra investigación, pretendemos en la actualidad describir, desde un formalismo teórico y al mismo nivel de exigencia, los mecanismos subyacentes que tienen lugar en las reacciones biológicas fototoinducidas, es decir, reacciones que se inician mediante la absorción de luz[3]. Como muestra de la caracterización de los procesos fotofísicos y fotoquímicos en fotobiología teórica, hemos elegido la descripción de la conversión interna ultrarrápida que tiene lugar en los cromóforos del ADN. Los estados excitados de las moléculas de los ácidos nucleicos presentan tiempos de vida media que se encuentran en el rango de sub-picosegundos, sugiriendo la presencia de un canal ultrarrápido de conversión interna, lo que normalmente se asocia en la fotoquímica contemporánea a una intersección cónica entre el estado excitado y el fundamental[4]. De esta forma nuestro ADN previene de forma eficaz posibles reacciones en el estado excitado y se revela como un excelente protector solar.

Merchán Bonete, M.


Manejo anestésico en la corrección toracoscópica de atresia de esófago tipo I con ventilación unipulmonar con modalidad de flujo continuo  

Microsoft Academic Search

Resumen Describimos el modo de ventilación con flujo conti- nuo para la reparación de un caso de atresia de esófa- go tipo I en un lactante. Este tipo de atresia se carac- teriza por estenosis esofágica distal, con bolsón proximal sin fístula en el árbol bronquial. Las técni- cas clásicas quirúrgicas realizan la reparación por toracotomía, pero la nueva introducción

F. García-Montoto; F. Martínez; N. Falcone; I. Cano; P. Rubio


9 CFR 319.301 - Chili con carne with beans.  

Code of Federal Regulations, 2011 CFR

...301 Section 319.301 Animals and Animal Products FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE...OR COMPOSITION Canned, Frozen, or Dehydrated Meat Food Products § 319.301 Chili con carne with...



Control del dolor: Apoyo para las personas con cáncer

Libro sobre el control del dolor en pacientes con cáncer. Cubre los métodos y medicinas, así como los efectos físicos y emocionales del dolor. Es una adaptación cultural para el público de habla hispana del libro en inglés Pain Control.


iCons, 2011 Alzheimers and Aluminum: Lesson Plan  

E-print Network

© iCons, 2011 Alzheimers and Aluminum: Lesson Plan Handouts to explore mechanistic link between Alzheimer's and aluminum 5. Brief proposal expanding Points to Aluminum's Link With Alzheimer's Disease" from 1989. Provide handout

Auerbach, Scott M.


Durabilidade de compósito biomassa vegetal-cimento modificado por polímero  

Microsoft Academic Search

DURABILITY OF CELLULOSE-CEMENT COMPOSITES MODIFIED BY POLYMER ABSTRACT: The durability of the cellulose-cement composites is a decisive factor to introduce such material in the market. Polymers have been used in concrete and mortar production to increase its durability. The goal of this work was the physical and mechanical characterization of cellulose-cement composites modified by a polymer and the subsequent durability

Lia L. Pimentel; Antonio L. Beraldo; Holmer Savastano Júnior



Multilevel Annotation in SpeeCon Polish Speech Database  

Microsoft Academic Search

\\u000a SpeeCon Polish Speech Database was collected within the framework of the SpeeCon project partially sponsored by the EC (IST-1999-10003).\\u000a The database contains two sets of data, which comprise 550 adults’ recording sessions and 50 sessions from children, respectively.\\u000a The adult speakers were recorded in various environments: offices, living rooms, cars and public places. Recordings contain\\u000a free spontaneous speech passages, elicited

Krzysztof Marasek; Ryszard Gubrynowicz



El teatro como reflexión colectiva: Conversación con Sergio Corrieri  

E-print Network

SPRING 1983 51 El teatro como reflexión colectiva: Conversación con Sergio Corrieri Gerardo Luzuriaga Sergio Corrieri es el director del renombrado Teatro Escambray, fundado por él y otros teatristas de La Habana en 1968 en la región del... propios del subdesarrollo. La superstición, por ejemplo, muy extendida en nuestras zonas rurales; el reparo del campesino, sus dudas ante la colectivización del trabajo agrícola, ante el hecho de unir sus esfuerzos con los de otros campesinos, y en...

Luzuriaga, Gerardo



Teaching after Retirement: The Pros and the Cons  

ERIC Educational Resources Information Center

Having enjoyed teaching during my active career, I continued to teach summer school following retirement. Self-observed sensory and cognitive impairments, although not mentioned by students in their evaluations, induced me to consider the pros and cons of continuing to teach. My hope is that this list of benefits and problems will be of assistance…

Sommer, Robert



Redes Reconfigurables Controladas por Marcado: Redes de Petri con Cambios  

E-print Network

Redes Reconfigurables Controladas por Marcado: Redes de Petri con Cambios Din´amicos Estructurales a cambios din´amicos utilizando exten- siones de redes de Petri. En estudios previos, hemos introducido los siste- mas de reescritura de redes y una subclase de los mismos llamada redes reconfigurables. En un

Alpuente, María


con Diabetes Su diabetes s se puede controlar!  

E-print Network

Do Well, Be Well con Diabetes ¡Su diabetes sí se puede controlar! Educational programs of the Texas, and the County Commissioners Courts of Texas Cooperating. to develop diabetes self-care skills, to improve eating habits and maintain good nutrition, to increase physical activity, to prevent diabetes complications


Providers debate pros and cons of pneumonia vaccination at discharge.  


When to vaccinate against pneumonia? Does it makes sense when patients are in the hospital? Or should patients wait for the first post-op visit with the PCP? Office-based and hospital-based physicians weigh the pros and cons of each. PMID:11246808



Problemas resueltos de variable compleja con elementos de teoria  

E-print Network

Problemas resueltos de variable compleja con elementos de teor´ia Ignacio Monterde, Vicente Montesinos. #12;´Indice general Introducci´on V 1. Teor´ia elemental 1 1.1. Elementos de teor´ia . . . . . . . . 55 1.2.8. Integraci´on compleja . . . . . . . . . . . . . . . . . . . 57 2. La teor´ia de las

Montesinos Santalucía, Vicente


Detail of conning tower atop the submarine. Note the wire ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

Detail of conning tower atop the submarine. Note the wire rope wrapped around the base of the tower, which may have been used in an attempt to pull the submarine offshore. - Sub Marine Explorer, Located along the beach of Isla San Telmo, Pearl Islands, Isla San Telmo, Former Panama Canal Zone, CZ


ConNexus to awarenex: extending awareness to mobile users  

Microsoft Academic Search

We explored the use of awareness information to facilitate communication by developing a series of prototypes. The ConNexus prototype integrates awareness information, instant messaging, and other communication channels in an interface that runs on a desktop computer. The Awarenex prototype extends that functionality to wireless handheld devices, such as a Palm. A speech interface also enables callers to make use

John C. Tang; Nicole Yankelovich; James Begole; Max Van Kleek; Francis C. Li; Janak R. Bhalodia



Un estudio eto-espacial con variables ambientales  

Microsoft Academic Search

La dinámica eto-espacial, en función de la variable ambiental, es un estudio desde el Enfoque paradigmático de la Psicología Ambiental. Se ha desarrollado en el foso de papiones sagrados (hamadryas) y anubis del Zoológico de Barcelona. Se han estudiado las posibles influencias del medio ambiente con respecto a la conducta, tanto en el contexto espacial como social. Se han utilizado

Josep Maria Amenós i Vidal; Joan Josep Tharrats i Pascual



Peces asociados con la deriva de macroalgas en Aysén, Chile  

Microsoft Academic Search

Resumen.- La obtención de restos de macroalgas flotando a la deriva en aguas frente al sur de Chile permite, por primera vez, explorar la presencia de peces nadando junto con ellas. Se registra la presencia del pez aguja Leptonotus blainvilleanus (familia Syngnathidae); la cojinova Seriolella porosa (familia Centrolophidae); el pampanito, Stromateus stellatus (familia Stromateidae) y el torito Bovichtus sp. (familia

Germán Pequeño; Daniela Farías; Martín Thiel; Iván Hinojosa




E-print Network


Oak Ridge National Laboratory


Cómo hacer las gestiones con su plan de salud

Hay formas de saber si su plan de salud cubre los costos de atención médica de rutina durante un estudio clínico. Esta información puede servirle para saber con quién comunicarse para solicitar ayuda, preguntas que puede hacer y la información que debe recoger y guardar si decide participar en un estudio clínico.


Pointwise convergence rate for nonlinear con servation laws  

E-print Network

convergence rate in this case is upper bounded by ku ffl (\\Delta; t) \\Gamma u(\\Delta; t)k L 1 Ÿ const.ffl: (6Pointwise convergence rate for nonlinear con­ servation laws Eitan Tadmor and Tao Tang Abstract. We finitely many shocks. It is well­known that u ffl (\\Delta; t) converges strongly in L 1 to u(\\Delta; t

Tang, Tao


Neogene sequence stratigraphy, Nam Con Son Basin, offshore Vietnam  

Microsoft Academic Search

An integrated well log, biostratigraphic, and seismic stratigraphic study of Miocene to Recent deltaic sediments deposited in the Nam Con Son Basin offshore from southern Vietnam shows the influence of eustacy and tectonics on sequence development. Sediments consist of Oligocene non-marine rift-basin fill (Cau Formation), early to middle Miocene tide-dominated delta plain to delta front sediments (TB 1.5 to TB

K. J. McMillen; E. K. Lee; S. S. Hong




E-print Network

las armas de fuego quedó obsoleto y relegado al uso deportivo o de ocio. Como deporte, formó parte de a dianas situadas a 70 metros de distancia. También es deporte paralímpico desde los Juegos Paralímpicos de Tiro con Arco, puede tener un gran interés para la comunidad universitaria: · Porque es un deporte

Escolano, Francisco



E-print Network

aparecer las armas de fuego quedó obsoleto y relegado al uso deportivo o de ocio. Como deporte, formó parte a dianas situadas a 70 metros de distancia. También es deporte paralímpico desde los Juegos Paralímpicos de Tiro con Arco, puede tener un gran interés para la comunidad universitaria: · Porque es un deporte

Escolano, Francisco


The Pros and Cons of RFID in Supply Chain Management  

Microsoft Academic Search

This paper presents the pros and cons of using Radio-Frequency IDentification (RFID) in Supply Chain Management (SCM). While RFID has a greater number of benefits than its predecessor, the bar code, it currently comes at a price that many businesses still consider prohibitive. On the one hand, RFID is advantageous because it does not require line-of-sight scanning, it acts to

Katina Michael; Luke Mccathie



Denaturazione termica e meccanica del DNA : teoria a confronto con gli  

E-print Network

Capitolo 3 Denaturazione termica e meccanica del DNA : teoria a confronto con gli esperimenti. DENATURAZIONE TERMICA E MECCANICA DEL DNA : TEORIA A CONFRONTO CON GLI ESPERIMENTI della transizione DNA B-DNA d

Cocco, Simona


Métodos con información genética para abordar la complejidad del cáncer de pulmón

Se estima que 220 000 personas recibieron un diagnóstico de alguna forma de cáncer de pulmón en 2010. Es la principal causa de muertes relacionadas con el cáncer, con más de 157 000 muertes previstas en 2010.


Recursos relacionados con los exámenes de detección del cáncer de cuello uterino

El NCI tiene información completa y de base científica sobre prevención, exámenes selectivos de detección, diagnóstico, tratamiento, genética y cuidados de apoyo relacionados con el cáncer. Nuestros especialistas en información pueden responder preguntas relacionadas con el cáncer, entre ellas, las que tienen que ver con los exámenes de detección y el tratamiento del cáncer de cuello uterino. Puede comunicarse con nosotros por teléfono, correo electrónico o mensajería instantánea (el chat solo está disponible en inglés).


Accesibilidad para personas con debilidad motriz Mac Os X Snow Leopard  

E-print Network

Accesibilidad para personas con debilidad motriz Mac Os X Snow Leopard ASIC ­ 18 de noviembre de 2010 Pág. 1 de 9 GUÍA DE ACCESIBILIDAD PARA PERSONAS CON DEBILIDAD MOTRIZ EN ENTORNO MAC OS X SNOW para personas con debilidad motriz Mac Os X Snow Leopard ASIC ­ 18 de noviembre de 2010 Pág. 2 de 9

Fernández de Córdoba, Pedro


Accesibilidad para personas con debilidad auditiva Mac OS X Snow Leopard  

E-print Network

Accesibilidad para personas con debilidad auditiva Mac OS X Snow Leopard ASIC ­ 18 de noviembre de 2010 Pág. 1 de 14 GUÍA DE ACCESIBILIDAD PARA PERSONAS CON DEBILIDAD AUDITIVA EN ENTORNO MAC OS X SNOW LEOPARD MAC OS X Snow Leopard ofrece algunas ayudas para personas sordas o con problemas para escuchar

Fernández de Córdoba, Pedro


Las espirales de Fibonacci podran estar relacionadas con la tensin 26/04/2007 Astroseti  

E-print Network

Las espirales de Fibonacci podrían estar relacionadas con la tensión 26/04/2007 Astroseti Las espirales de Fibonacci podrían estar relacionadas con la tensión. La serie de Fibonacci ­ en la cual cada tensión" para crear espirales con la serie de Fibonacci en microestructuras que crecen en laboratorio

Zexian, Cao


Sexual con ict and cooperation in butter y reproduction: a comparative study of polyandry  

E-print Network

Sexual con ict and cooperation in butter y reproduction: a comparative study of polyandry hormonesömay each corre- spond to a separate con£ict^cooperation balance between the sexes. Two scenarios. Keywords: nuptial gifts; mating frequency; sexual con£ict; lifetime fecundity 1. INTRODUCTION

Leimar, Olof


Modelling Con ict-Resolution Dialogues Fiorella de Rosis, Floriana Grasso, Cristiano Castelfranchi, and Isabella Poggi  

E-print Network

Modelling Con ict-Resolution Dialogues Fiorella de Rosis, Floriana Grasso, Cristiano Castelfranchi play a particu- larly relevant role when agents have to face a con icting situation: impatient, aggressive, polite, persistent, rude: : : people show radically di#11;erent ways of managing con icts

Bari, Università degli Studi di


Functional heterogeneity of con ict, error, task-switching, and unexpectedness effects within medial prefrontal cortex  

E-print Network

Functional heterogeneity of con ict, error, task-switching, and unexpectedness effects within Revised 3 August 2010 Accepted 13 August 2010 Available online 20 August 2010 Keywords: ACC Con ict Error cingulate cortex. The proposed theories have included con ict detection, error likelihood prediction

Kastner, Sabine


Apoyo a Estudios Geodinamicos con GPS en Guatemala  

NASA Astrophysics Data System (ADS)

El Instituto Geografico Nacional de Guatemala implemento 17 estaciones GNSS en el año 2009, como un proyecto de credito mixto de donacion de equipamiento del Gobierno de Suiza, el cual, este equipamiento de estaciones CORS GNSS es un sistema de recepción y transmisión de datos crudos GPS RInex que utiliza la tecnologia Spider Web de Leica, asi mismo este sistema esta sirviendo para el espablecimiento de un marco geodesico nacional de coordenadas geodesicas oficiales, el cual se calculan u obtienen las velocidades en tiempos temporales programados de las 17 Estaciones CORS. La infraestructura del marco geodesico de Guatemala esta sirviendo de base para las aplicaciones de estudios geodinamicos como el monitoreo de del desplazamiento de las placas tectonicas por medio de un estudio que se inicio en el año de 1999, llamado medicion con GPS el sistema de Fallas de los rios Polochic Motagua de Guatemala, tambien para un estudio que se implemento para deformación de corteza terrestre local en un Volcan Activo de Guatemala llamado Pacaya. Para el estudio de medicion con GPS en el sistema de falla de los Rios del polochic Motagua se implementaron 16 puntos para medir con GPS de dos frecuencias en el año de 1999, el cual, tres puntos son estaciones geodesicas CORS IGS llamados GUAT, ELEN y HUEH, despues en el año de 2003 se hizo otra medicion en un total de 20 puntos, que permitió calcular las velocidades de desplazamieinto de los puntos en mención, usando como referencia el modelo NUVEL 1A de DeMets de la placa de Norteamerica. Este estudio fue en cooperación internacional por la universidad de Nice de Francia y el IGNde Francia. Para el estudio del monitoreo con GPS del volcan activo de Guatemala, se implementaron cuatro puntos al rededor del volcan, el cual, se realizan cuatro mediciones al año, que permiten determinar axialmente la distancias entre los puntos, y rebisar estadisticamente cual es el comportamiento de las distancias en funcion del tiempo, si existen diferencias graduales crecientes o decrecientes, que nos da un indicativo del desplazamiento de la corteza terrestre al rededor del volcan.

Robles, V. R.



Do Well, Be Well with Diabetes 2013 1 Formulario de Registro para Personas con Diabetes Formulario de Registro para Personas con Diabetes 2013  

E-print Network

Do Well, Be Well with Diabetes ­ 2013 1 Formulario de Registro para Personas con Diabetes Formulario de Registro para Personas con Diabetes ­ 2013 Si usted NO TIENE diabetes, por favor NO LLENE este sobre diabetes en el Condado de _______________. D. El código postal en mi casa es __ __ __ __ __. E


Do Well, Be Well with Diabetes 2013 1 Formulario de Conclusin para Personas con Diabetes Formulario de Conclusin para Personas con Diabetes 201  

E-print Network

Do Well, Be Well with Diabetes ­ 2013 1 Formulario de Conclusión para Personas con Diabetes Formulario de Conclusión para Personas con Diabetes ­ 201 Si usted NO TIENE diabetes, por favor NO LLENE este últimos cuatro números de mi número telefónico son __ __ __ __. C. Marque todas las clases sobre diabetes


Obtención de perfiles teóricos de elementos metálicos con velocidades macroscópicas  

NASA Astrophysics Data System (ADS)

El propósito de este trabajo es poder establecer -a partir de la modelización de perfiles de distintas especies- patrones de comparación observacional que permitan caracterizar los fenómenos físicos que están presentes en las estructuras que se observan. Para ello se resuelven las ecuaciones de equilibrio de ionización para un determinado átomo y una atmósfera de parámetros determinados. A partir de ello se definen las poblaciones para los distintos grados de ionización. Considerando distintas configuraciones e intensidades de flujos de masa se deducen la función fuente, el espesor óptico y se calculan los perfiles de las distintas líneas. Se obtuvieron perfiles teóricos de líneas del CII, CIV y del OIV para flujos entrante, saliente y pasante. La forma del perfil, las intensidades relativas entre los distintos flujos y el corrimiento Doppler da cuenta de una caracterización teórica a partir de la cual se comparará con observaciones.

Cirigliano, D.; Costa, A.; Rovira, M.


RoboCon: Operator interface for robotic applications  

SciTech Connect

Carnegie Mellon U. and ORNL`s Robotics and Process Systems Division are developing a state-of-the-art robot operator control station (RoboCon) with standardized hardware and software control interfaces to be adaptable to a variety of remote and robotic equipment currently funded by DOE`s Office of Science & Technology Robotics Technology Development Program. The human operation and telerobotic and supervisory control of sophisticated and remote and robotic systems is a complex, tiring, and non-intuitive activity. Since decontamination & decommissioning, selective equipment removal, mixed waste operations, and in-tank cleanup are going to be a major future activity in DOE environmental restoration and waste management cleanup agenda, it seems necessary to utilize an operator control station and interface which maximizes operator comfort and productivity.

Schempf, H.; Warwick, J.; Fung, M.; Chemel, B.; Blackwell, M.



Neogene sequence stratigraphy, Nam Con Son Basin, offshore Vietnam  

SciTech Connect

An integrated well log, biostratigraphic, and seismic stratigraphic study of Miocene to Recent deltaic sediments deposited in the Nam Con Son Basin offshore from southern Vietnam shows the influence of eustacy and tectonics on sequence development. Sediments consist of Oligocene non-marine rift-basin fill (Cau Formation), early to middle Miocene tide-dominated delta plain to delta front sediments (TB 1.5 to TB 2.5, Due and Thong Formations), and late Miocene to Recent marine shelf sediments (TB. 2.6 to TB 3.1 0, Mang Cau, Nam Con Son, and Bien Dong Formations). Eustacy controlled the timing of key surfaces and sand distribution in the tectonically-quiet early Miocene. Tectonic effects on middle to late Miocene sequence development consist of thick transgressive systems tracts due to basin-wide subsidence and transgression, sand distribution in the basin center, and carbonate sedimentation on isolated fault blocks within the basin. Third-order sequence boundaries (SB) are identified by spore peaks, sand stacking patterns, and channel incision. In the basin center, widespread shale beds with coal occur above sequence boundaries followed by transgressive sandstone units. These TST sandstones merge toward the basin margin where they lie on older HST sandstones. Maximum flooding surfaces (MFS) have abundant marine microfossils and mangrove pollen, a change in sand stacking pattern, and often a strong seismic reflection with downlap. Fourth-order genetic-type sequences are also interpreted. The MFS is the easiest marker to identify and correlate on well logs. Fourth-order SB occur within these genetic units but are harder to identify and correlate.

McMillen, K.J. [Beaver Creek Tech. Co., Mason, TX (United States); Do Van Luu; Lee, E.K.; Hong, S.S. [PEDCO, Ho Chi Minh City (Viet Nam)



Neogene sequence stratigraphy, Nam Con Son Basin, offshore Vietnam  

SciTech Connect

An integrated well log, biostratigraphic, and seismic stratigraphic study of Miocene to Recent deltaic sediments deposited in the Nam Con Son Basin offshore from southern Vietnam shows the influence of eustacy and tectonics on sequence development. Sediments consist of Oligocene non-marine rift-basin fill (Cau Formation), early to middle Miocene tide-dominated delta plain to delta front sediments (TB 1.5 to TB 2.5, Due and Thong Formations), and late Miocene to Recent marine shelf sediments (TB. 2.6 to TB 3.1 0, Mang Cau, Nam Con Son, and Bien Dong Formations). Eustacy controlled the timing of key surfaces and sand distribution in the tectonically-quiet early Miocene. Tectonic effects on middle to late Miocene sequence development consist of thick transgressive systems tracts due to basin-wide subsidence and transgression, sand distribution in the basin center, and carbonate sedimentation on isolated fault blocks within the basin. Third-order sequence boundaries (SB) are identified by spore peaks, sand stacking patterns, and channel incision. In the basin center, widespread shale beds with coal occur above sequence boundaries followed by transgressive sandstone units. These TST sandstones merge toward the basin margin where they lie on older HST sandstones. Maximum flooding surfaces (MFS) have abundant marine microfossils and mangrove pollen, a change in sand stacking pattern, and often a strong seismic reflection with downlap. Fourth-order genetic-type sequences are also interpreted. The MFS is the easiest marker to identify and correlate on well logs. Fourth-order SB occur within these genetic units but are harder to identify and correlate.

McMillen, K.J. (Beaver Creek Tech. Co., Mason, TX (United States)); Do Van Luu; Lee, E.K.; Hong, S.S. (PEDCO, Ho Chi Minh City (Viet Nam))



Gleevec disminuye la recidiva del cáncer en pacientes con tumor estromal gastrointestinal primario

Los resultados preliminares de un estudio clínico grande aleatorio y controlado con placebo, en pacientes con tumor estromal gastrointestinal (GIST) primario, un tipo de tumor que por lo general se encuentra en el estómago o en el intestino delgado, demostraron que los pacientes a los que se administró mesilato de imatinib (Gleevec®) luego de la extirpación total de su tumor tuvieron una probabilidad significativamente menor de padecer una recidiva del cáncer en comparación con aquellos a los que no se administró imatinib.


Relaciones filogenéticas de Euptychiina (Lepidoptera: Satyrinae) con base en características morfológicas de los adultos.  

E-print Network

??Marín Uribe, Mario Alejandro (2011) Relaciones filogenéticas de Euptychiina (Lepidoptera: Satyrinae) con base en características morfológicas de los adultos. Maestría thesis, Universidad Nacional de Colombia.… (more)

Marín Uribe, Mario Alejandro



Courses: Economics (ECON) Page 291Sonoma State University 2010-2011 Catalog eCOn 321 lABOr eCOnOMiCS (4)  

E-print Network

resources and the control of pollution. Topics include: energy, water, minerals, forests, air pollution, Africa, Asia and ex-socialist economies. Prerequisite: ECON 303 or 304 or consent of instructor. eCOn 404

Ravikumar, B.


Non Invasive Biomedical Analysis. Breath Networking Session at PittCon 2011, Atlanta, Georgia Non Invasive Biomedical Analysis. Breath Networking Session at PittCon 2011, Atlanta, Georgia  

Microsoft Academic Search

Background This was the second year that our breath colleagues organized a networking session at the Pittsburgh Conference and Exposition, or 'PittCon' (\\/). This time it was called 'Non Invasive Biomedical Analysis' to broaden the scope a bit, but the primary focus remained on exhaled breath diagnostics. As reported last year in the Journal of Breath Research, PittCon continues to

Joachim D. Pleil



Pros, Cons, and Alternatives to Weight Based Cost Estimating  

NASA Technical Reports Server (NTRS)

Many cost estimating tools use weight as a major parameter in projecting the cost. This is often combined with modifying factors such as complexity, technical maturity of design, environment of operation, etc. to increase the fidelity of the estimate. For a set of conceptual designs, all meeting the same requirements, increased weight can be a major driver in increased cost. However, once a design is fixed, increased weight generally decreases cost, while decreased weight generally increases cost - and the relationship is not linear. Alternative approaches to estimating cost without using weight (except perhaps for materials costs) have been attempted to try to produce a tool usable throughout the design process - from concept studies through development. This paper will address the pros and cons of using weight based models for cost estimating, using liquid rocket engines as the example. It will then examine approaches that minimize the impct of weight based cost estimating. The Rocket Engine- Cost Model (RECM) is an attribute based model developed internally by Pratt & Whitney Rocketdyne for NASA. RECM will be presented primarily to show a successful method to use design and programmatic parameters instead of weight to estimate both design and development costs and production costs. An operations model developed by KSC, the Launch and Landing Effects Ground Operations model (LLEGO), will also be discussed.

Joyner, Claude R.; Lauriem, Jonathan R.; Levack, Daniel H.; Zapata, Edgar



iCons class at UMass brings together students from all scientific disciplines  

E-print Network

iCons class at UMass brings together students from all scientific disciplines Published: Wednesday called iCons - #12;Integrated Concentration in Science - a program that allows students from all from all scientific disciplines to work together on real-world problems. Petsch is having the students

Auerbach, Scott M.


Accesibilidad para personas con debilidad visual Mac OS X Snow Leopard  

E-print Network

Accesibilidad para personas con debilidad visual Mac OS X Snow Leopard ASIC ­ 18 de noviembre de 2010 Pág. 1 de 25 GUÍA DE ACCESIBILIDAD PARA PERSONAS CON DEBILIDAD VISUAL EN ENTORNO MAC OS X SNOW LEOPARD Al igual que otros sistemas operativos, MAC OS X Snow Leopard ofrece algunas ayudas para que las

Fernández de Córdoba, Pedro



Microsoft Academic Search

El lenguaje nace como la conciencia, de la necesidad, de los apremios de relación con los demás hombres… La conciencia de la necesidad de entablar relaciones con los individuos circundantes es el comienzo de la conciencia de que el hombre vive, en general, dentro de una sociedad… La conciencia por tanto, es ya de antemano un producto social, y lo

Maria del Carmen Torres Alonso; José Alberto Alejo Becerra



La salud en personas con discapacidad intelectual en España: estudio europeo POMONA-II  

PubMed Central

Introducción Estudios internacionales demuestran que existe un patrón diferenciado de salud y una disparidad en la atención sanitaria entre personas con discapacidad intelectual (DI) y población general. Objetivo Obtener datos sobre el estado de salud de las personas con DI y compararlos con datos de población general. Pacientes y métodos Se utilizó el conjunto de indicadores de salud P15 en una muestra de 111 sujetos con DI. Los datos de salud encontrados se compararon según el tipo de residencia de los sujetos y se utilizó la Encuesta Nacional de Salud 2006 para comparar estos datos con los de la población general. Resultados La muestra con DI presentó 25 veces más casos de epilepsia y el doble de obesidad. Un 20% presentó dolor bucal, y existió una alta presencia de problemas sensoriales, de movilidad y psicosis. Sin embargo, encontramos una baja presencia de patologías como la diabetes, la hipertensión, la osteoartritis y la osteoporosis. También presentaron una menor participación en programas de prevención y promoción de la salud, un mayor número de ingresos hospitalarios y un uso menor de los servicios de urgencia. Conclusiones El patrón de salud de las personas con DI difiere del de la población general, y éstas realizan un uso distinto de los servicios sanitarios. Es importante el desarrollo de programas de promoción de salud y de formación profesional específicamente diseñados para la atención de personas con DI, así como la implementación de encuestas de salud que incluyan datos sobre esta población. PMID:21948011

Martínez-Leal, Rafael; Salvador-Carulla, Luis; Gutiérrez-Colosía, Mencía Ruiz; Nadal, Margarida; Novell-Alsina, Ramón; Martorell, Almudena; González-Gordón, Rodrigo G.; Mérida-Gutiérrez, M. Reyes; Ángel, Silvia; Milagrosa-Tejonero, Luisa; Rodríguez, Alicia; García-Gutiérrez, Juan C.; Pérez-Vicente, Amado; García-Ibáñez, José; Aguilera-Inés, Francisco



Elizabeth A.Johnson y Kefyn M.Catley con ilustraciones de Patricia J. Wynne  

E-print Network

Vidaen la Hojarasca La Elizabeth A.Johnson y Kefyn M.Catley con ilustraciones de Patricia J. Wynne Elizabeth A. Johnson y Kefyn M. Catley con ilustraciones de Patricia J. Wynne Ellen V. Futter, Presidente personal y voluntarios del CBC Escrito por: Elizabeth A. Johnson (Center for Biodiversity and Conservation


Per: Chirapaq celebra 25 aos con un foro sobre "Derechos de los Pueblos Indgenas"  

E-print Network

Perú: Chirapaq celebra 25 años con un foro sobre "Derechos de los Pueblos Indígenas celebrará su 25 aniversario con el foro público internacional: "Derechos de los Pueblos Indígenas: Avances y la Nación Cree, ex parlamentario y miembro del Mecanismo de Expertos sobre los Derechos de los

Islas, León


Context reasoning is the process of drawing con-clusions from existing context information, and is  

E-print Network

Abstract Context reasoning is the process of drawing con- clusions from existing context information, and is considered crucial to geospatial interoperability. However, such reasoning still remains and mod- eling the external quality (fitness-for-use) of con- text information is important for reasoning


Cursos Oficiales ETSII-URJC Obtn tu Diploma con los nuevos cursos de  

E-print Network

REST con Spring MVC MongoDB Spring Data Testing Servicios cloud computing: APIs REST para aplicaciones web y móviles con Spring y MongoDB Del 20 de marzo al 4 de abril, de 13 a 15h Duración: 20 horas

Rey Juan Carlos, Universidad


Almost-Flat Line Con gurations Department of Industrial Sciences and Technology  

E-print Network

Communications, Robot Kinematics, e.a.). In order to classify the con#12;gurations of n lines in real (a). This is called the planar layout of the con#12;gurations. So, in a planar layout one line can \\cross over" or \\cross under" or intersect another line. The char- acterization of the possible planar layouts of n lines

Penne, Rudi


Persisten las diferencias de cáncer de seno en hispanas con el mismo acceso a la atención médica

Con el mismo acceso a servicios médicos, persisten las diferencias en cuanto al tamaño, el estadio y el grado del cáncer de seno en las mujeres hispanas en comparación con las mujeres blancas no hispanas.


Global Environmental Change 11 (2001) 69}78 Sahel pastoralists: opportunism, struggle, con#ict and negotiation.  

E-print Network

Global Environmental Change 11 (2001) 69}78 Sahel pastoralists: opportunism, struggle, con#ict in to insure access to resources; to the nature of con#icts and co-operation between ethnic groups and pasture, culminating in present-day tensions and con#ict between pastoral groups. State development e

Batterbury, Simon


Determination of composition in stoichiometric Co-N ultrathin films by nitrogen plasma sputtering  

SciTech Connect

This work utilizes low-energy sputtering to incorporate the generated nitrogen plasma into an epitaxial 1.4 nm Co film on the surface of a ZnO(002) substrate. In this method, ultrathin Co-N amorphous films were formed. Interestingly, Co is key to the formation of Co-N films. Without the deposition of Co on the ZnO(002), nitride films cannot be formed. Observations of the surface composition of the Co-N films after the firing of a N{sup +} ion beam onto it demonstrated that the surface concentration of Co reduced at the same rate as the reduction in the concentration of N upon successive sputtering. Theoretical calculations based on the Auger peak-to-peak amplitudes established that the composition of the amorphous Co-N thin films may be Co{sub 3}N{sub 2}.

Su, C. W.; Huang, M. S.; Chang, Y. C.; Tsai, T. H. [Department of Applied Physics, National Chiayi University, 300 Syuefu Rd., Chiayi 60004, Taiwan (China); Lee, Y. H.; Lee, J. C. [Department of Physics, National Cheng Kung University, 1 University Rd., Tainan 70101, Taiwan (China)



El tratamiento con cloro es un mtodo para desinfectar un pozo de agua. Se recomien-  

E-print Network

exceso de lluvia entran en el pozo. Si el agua subterránea constituye en sí la fuente de bacterias, elEl tratamiento con cloro es un método para desinfectar un pozo de agua. Se recomien- da cuando un sistema de agua está contam- inado con bacterias. La contaminación puede ocurrir en la instalación del


EyeCon -- a motion sensing tool for creating interactive dance, music and video projections  

Microsoft Academic Search

EyeCon is a video-based motion sensing system which allows performers to generate or control music and projected images through their movements and gestures in space. It was developed Frieder Weiß as an application- driven project of the Palindrome inter-media performance group and is thus more a tool for artists than for researchers. EyeCon does, however, allow motion sensing according to

Robert Wechsler; Peter Dowling


Quimioterapia de alta dosis prolonga en forma significativa la supervivencia en pacientes con leucemia mieloide aguda

Los resultados preliminares de un estudio clínico grande con asignación al azar de pacientes de 16 a 60 años de edad con leucemia mieloide aguda (LMA), un cáncer de la sangre y de la médula ósea, que no había sido tratada anteriormente, muestran que los pacientes que recibieron una alta dosis de daunorrubicina, un fármaco de quimioterapia disponible comercialmente, durante la terapia inicial vivieron más que los pacientes que recibieron una dosis normal del mismo fármaco.


NSF funds iCons and HCC interdisciplinary renewable energy labs The campus' Integrated Concentration in Science (iCons) program and  

E-print Network

NSF funds iCons and HCC interdisciplinary renewable energy labs The campus' Integrated in integrative education with an emphasis on current societal problems to create the renewable energy laboratory-of-the- art renewable energy laboratory courses at both institutions thanks to $250,000 in National Science

Auerbach, Scott M.


Virulence, Speciation and Antibiotic Susceptibility of Ocular Coagualase Negative Staphylococci (CoNS)  

PubMed Central

Background: Coagulase negative Staphylococci (CoNS) are common inhabitants of human skin and mucous membranes. With the emergence of these organisms as prominent pathogens in patients with ocular infections, investigation has intensified in an effort to identify important virulence factors and to inform new approaches to treatment and prevention. Aim: To isolate CoNS from ocular specimens; to study the possible virulence factors; speciation of coagulase negative staphylococci (CoNS) which were isolated from ocular complications; antibiotic susceptibility testing of ocular CoNS. Materials and Methods: The specimens were collected from the target patients who attended the Microbiology Laboratory of a tertiary care eye hospital in Coimbatore, Tamilnadu state, India. The isolates were subjected to tube and slide coagulase tests for the identification of CoNS. All the isolates were subjected to screening for lipase and protease activities. Screening for other virulence factors viz., slime production on Congo red agar medium and haemagglutination assay with use of 96-well microtitre plates. These isolates were identified upto species level by performing biochemical tests such as phosphatase test, arginine test, maltose and trehalose fermentation tests and novobiocin sensitivity test. The isolates were subjected to antibiotic susceptibility studies, based on the revised standards of Clinical and Laboratory Standards Institutes (CLSI). Results: During the one year of study, among the total 260 individuals who were screened, 100 isolates of CoNS were obtained. Lipolytic activity was seen in all the isolates, whereas 38 isolates showed a positive result for protease. A total of 63 isolates showed slime production. Of 100 isolates, 30 isolates were analyzed for haemagglutination, where 4 isolates showed the capacity to agglutinate the erythrocytes. The results of the biochemical analysis revealed that of the 100 isolates of CoNS, 43% were Staphylococcus epidermidis. The other isolates were identified as S. xylosus (n=8), S. captis (n=16), S. haemolyticus (n=10), S. saccharolyticus (n=2), S. hominis (n=5), S. saprophyticus (n=6) and S. intermedius (n=1). On the other hand, 9 isolates were not identified. In the antibiotic susceptibility analysis, it was found that most of the isolates were sensitive to vancomycin, amikacin and linczolid and resistant to cefatoxime, oxacillin, bacitracin and nalidixic acid. Conclusion: S. epidermidis was found to be predominant in causing the ocular complications. Slime production, heamagglutination, protease and lipase activities could be the putative virulence factors of CoNS. Antibiotic susceptibility patterns of CoNS against antibacterial agents revealed maximum resistance to beta lactam groups, and the resistance was found to be higher to oxacillin, and lowest to vancomycin. PMID:24995181

Priya, Ravindran; Mythili, Arumugam; Singh, Yendremban Randhir Babu; Sreekumar, Haridas; Manikandan, Palanisamy; Panneerselvam, Kanesan



Structural basis of ConM binding with resveratrol, an anti-inflammatory and antioxidant polyphenol.  


Resveratrol can also inhibit the activation of proinflammatory mediators and cytokines at the early gene expression stage. It is well known that lectins are sugar-binding proteins that act as both pro- and anti-inflammatory molecules. Thus, the objective of this work was to verify the binding of a polyphenol compound with a lectin of Canavalia maritima (ConM) based on their ability to inhibit pro-inflammatory processes. To accomplish this, ConM was purified and crystallized, and resveratrol was soaked at 5mM for 2h of incubation. The crystal belongs to the monoclinic space group C2, the final refinement resulted in an Rfactor of 16.0% and an Rfree of 25.5%. Resveratrol binds in the rigid ?-sheet through H-bonds and hydrophobic interaction with amino acids that compose the fifth and sixth ?-strands of the rigid ?-sheet of ConM. The ConM and resveratrol inhibited DPPH oxidation, showing synergic activity with the most effective ratio of 2:3 and carbohydrate binding site is not directly related to antioxidant activity. It is the interaction between ConM and resveratrol that indicates the synergism of these two molecules in acting as free radicals scavengers and in reducing the inflammatory process through the inhibition of many pro-inflammatory events. PMID:25192853

Rocha, Bruno A M; Teixeira, Claudener S; Silva-Filho, José C; Nóbrega, Raphael B; Alencar, Daniel B; Nascimento, Kyria S; Freire, Valder N; Gottfried, Carmem J S; Nagano, Celso S; Sampaio, Alexandre H; Saker-Sampaio, Silvana; Cavada, Benildo S; Delatorre, Plínio



ConSole: using modularity of Contact maps to locate Solenoid domains in protein structures  

PubMed Central

Background Periodic proteins, characterized by the presence of multiple repeats of short motifs, form an interesting and seldom-studied group. Due to often extreme divergence in sequence, detection and analysis of such motifs is performed more reliably on the structural level. Yet, few algorithms have been developed for the detection and analysis of structures of periodic proteins. Results ConSole recognizes modularity in protein contact maps, allowing for precise identification of repeats in solenoid protein structures, an important subgroup of periodic proteins. Tests on benchmarks show that ConSole has higher recognition accuracy as compared to Raphael, the only other publicly available solenoid structure detection tool. As a next step of ConSole analysis, we show how detection of solenoid repeats in structures can be used to improve sequence recognition of these motifs and to detect subtle irregularities of repeat lengths in three solenoid protein families. Conclusions The ConSole algorithm provides a fast and accurate tool to recognize solenoid protein structures as a whole and to identify individual solenoid repeat units from a structure. ConSole is available as a web-based, interactive server and is available for download at PMID:24766872



ConA-based glucose sensing using the long-lifetime azadioxatriangulenium fluorophore  

NASA Astrophysics Data System (ADS)

Fluorescent glucose sensing technologies have been identified as possible alternatives to current continuous glucose monitoring approaches. We have recently introduced a new, smart fluorescent ligand to overcome the traditional problems of ConA-based glucose sensors. For this assay to be translated into a continuous glucose monitoring device where both components are free in solution, the molecular weight of the smart fluorescent ligand must be increased. We have identified ovalbumin as a naturally-occurring glycoprotein that could serve as the core-component of a 2nd generation smart fluorescent ligand. It has a single asparagine residue that is capable of displaying an N-linked glycan and a similar isoelectric point to ConA. Thus, binding between ConA and ovalbumin can potentially be monovalent and sugar specific. This work is the preliminary implementation of fluorescently-labeled ovalbumin in the ConA-based assay. We conjugate the red-emitting, long-lifetime azadioxatriangulenium (ADOTA+) dye to ovalbumin, as ADOTA have many advantageous properties to track the equilibrium binding of the assay. The ADOTA-labeled ovalbumin is paired with Alexa Fluor 647-labeled ConA to create a Förster Resonance Energy Transfer (FRET) assay that is glucose dependent. The assay responds across the physiologically relevant glucose range (0-500 mg/dL) with increasing intensity from the ADOTA-ovalbumin, showing that the strategy may allow for the translation of the smart fluorescent ligand concept into a continuous glucose monitoring device.

Cummins, Brian; Simpson, Jonathan; Gryczynski, Zygmunt; Sørensen, Thomas Just; Laursen, Bo W.; Graham, Duncan; Birch, David; Coté, Gerard



Estudios estructurales sobre entidades tiosemicarbazonacobre(II) y su interacción con polioxometalatos y biomoléculas: síntesis, estabilidad y propiedades magnéticas.  

E-print Network

??Estudios estructurales sobre entidades tiosemicarbazonacobre(II) y su interacción con polioxometalatos y biomoléculas. Síntesis, estabilidad y propiedades magnéticas? El presente Trabajo ahonda en la síntesis y… (more)

Gil García, Rubén



Estrategia de aula para alcanzar aprendizajes significativos y desarrollar habilidades de pensamiento científico en relación con la meiosis.  

E-print Network

??Villada Salazar, Claudia Patricia (2011) Estrategia de aula para alcanzar aprendizajes significativos y desarrollar habilidades de pensamiento científico en relación con la meiosis. Maestría thesis,… (more)

Villada Salazar, Claudia Patricia



Un estudio financiado por los Institutos Nacionales de la Salud (NIH) muestra reducción en la mortalidad entre hombres con cáncer de próstata en grado intermedio:

Terapia hormonal por corto tiempo administrada en combinación con radioterapia a hombres con cáncer de próstata en estadio inicial aumentó sus posibilidades de vivir más en comparación con tratamiento de radioterapia sola, según un estudio clínico patrocinado por el NCI. Los beneficios del tratamiento combinado se limitaron principalmente a pacientes con enfermedad de riesgo intermedio y no se observaron en hombres con cáncer de próstata de riesgo bajo, indican los investigadores.


Zoning administrators and others con-cerned with airport land use will soon  

E-print Network

Zoning administrators and others con- cerned with airport land use will soon have help when it comes to making decisions that affect their airports. The recently completed Airport Land Use zoning stan- dards, local ordinances, and land use. The manual was developed by the Minnesota Department

Minnesota, University of


Costo de capital con costo del patrimonio apalancado como el riesgo de los escudos fiscales  

Microsoft Academic Search

Se presenta la derivación de costo de capital bajo la premisa del ahorro de impuestos de riesgo descuento con el costo de capital apalancado. Se demuestra que la formulación es coherente y se deriva de los principios financieros básicos. Esta formulación es válida para los flujos de caja finitos y perpetuidades sin crecimiento. Además, se puede calcular sin la circularidad

Joseph Tham; Ignacio Velez Pareja



Timectomía por videotoracoscopia asistida con bloqueo anestésico paravertebral bilateral en pacientes miasténicos  

Microsoft Academic Search

Summary Thymectomy continues to be the treatment of choice for certain patients with myasthenia gravis. As surgical techniques have developed, anesthesiologists have con- sidered the need to adapt anesthetic techniques to improve care of patients undergoing this procedure. We describe the anesthetic management of 2 patients under- going thymectomy performed with a bilateral thoracos- copic approach. Because it is best

J. L. López-Berlanga; I. Garutti; E. Martínez-Campos; P. Piñeiro; D. Salvatierra


Science for conServation 293 Loss of genetic diversity and  

E-print Network

Science for conServation 293 Loss of genetic diversity and inbreeding in New Zealand's threatened of Conservation. This paper may be cited as: Jamieson, I.G. 2009: Loss of genetic diversity and inbreeding in New bird species #12;Loss of genetic diversity and inbreeding in New Zealand's threatened bird species Ian

Jamieson, Ian


Integrated Concentration in Science, 2012 High Fructose Corn Syrup a mini iCons case study  

E-print Network

© Integrated Concentration in Science, 2012 High Fructose Corn Syrup­ a mini iCons case study researchers find that high fructose corn syrup prompts considerably more weight gain. The Atlantic, Aug 13, 2012 ­ Study: High fructose corn syrup no worse than `real' sugar

Auerbach, Scott M.


Safety and Toxicity Evaluation of GonaCon ™ Immunocontraceptive Vaccine in White-Tailed Deer  

Microsoft Academic Search

GonaCon ™ Immunocontraceptive Vaccine targets the reproductive hormone gonadotropin releasing hormone (GnRH) secreted by the hypothalamus of the brain. Antibodies produced in response to the vaccine inactivate endogenous GnRH, which in turn eliminates stimulation of the pituitary gland and gonads in males or females. The resulting \\

Gary Killian; Donald Wagner; Richard Engeman; Lowell Miller


On the Detection of Con icts in Diagnostic Bayesian Networks Using Abstraction  

E-print Network

On the Detection of Con icts in Diagnostic Bayesian Networks Using Abstraction Young-Gyun Kim Bayesian net- work (the base model) and constructs, with- out assistance, a bipartite network to be used and imple- mented. 1 INTRODUCTION Developing a diagnostic expert system that uses a Bayesian network

Valtorta, Marco


CecileBernard La escasez de alimentos que. con distinto gr&o. afectz a  

E-print Network

-,- .e CI' I CecileBernard La escasez de alimentos que. con distinto gr&o. afectz a la mayoría de respecta al abasto de alimentos, se reactiva una institución creada en 1965, la CONASUPO (CompaFh Na alimentos principales (tortillas, enva- sado de la leche), monopoliode la importación de granos (M. Durand

Paris-Sud XI, Université de


La fecha ltima en que el alimento se debe La mayora de los alimentos pueden con-  

E-print Network

La fecha última en que el alimento se debe vender. ****************************************** La mayoría de los alimentos pueden con- sumirse después de esta fecha, SI han sido manejados y guardados bolsas). ****************************************** No compre alimentos después de la fecha "véndase


Una entrevista con Inés Margarita Stranger (Chile) y sus personajes femeninos  

E-print Network

FALL 1996 89 Una entrevista con Inés Margarita Stranger (Chile) y sus personajes femeninos Pedro Bravo-Elizondo A la fecha, su vida contempla un título como teatrista por la Universidad Católica de Chile en la cual es profesora en la Escuela de...

Bravo-Elizondo, Pedro



Onion Routing Access Con gurations Paul F. Syverson, Michael G. Reed, and David M. Goldschlag  

E-print Network

Onion Routing Access Con gurations Paul F. Syverson, Michael G. Reed, and David M. Goldschlag Naval Research Laboratory Abstract Onion Routing is an infrastructure for private com- munication over and tra c analysis. Thus it hides not only the data being sent, but who is talking to whom. Onion Routing


Impactos del Huracn Isaac en la calidad del agua en Luisiana con MODIS 250m  

E-print Network

lluvias. Por tal razón se quiere estudiar la calidad del agua en el delta del río Mississippi antes1 Impactos del Huracán Isaac en la calidad del agua en Luisiana con MODIS 250m Thais J. Alicea imágenes en ENVI. Palabras clave: Calidad del agua, ENVI, Isaac, Luisiana, MODIS

Gilbes, Fernando


Although most Minnesota airports do not have much concrete pavement, the con-  

E-print Network

Although most Minnesota airports do not have much concrete pavement, the con- crete they do have are generally constructed out of concrete that is much thicker. Maintaining any section of pavement, regardless of its size, is important for pre- serving its condition and optimizing pave- ment life. Pavement

Minnesota, University of


Iron formations are typically thinly bed-ded or laminated sedimentary rocks con-  

E-print Network

222 ABSTRACT Iron formations are typically thinly bed- ded or laminated sedimentary rocks con- taining 15% or more of iron and a large pro- portion of silica (commonly >40%). In the ca. 2590­2460 Ma Campbellrand-Kuruman Complex, Transvaal Supergroup, South Africa, iron formation occurs as a sediment- starved

Fischer, Woodward



Microsoft Academic Search

Sommario Il largo e crescente utilizzo di materiali compositi in applicazioni ingegneristiche di estrema importanza, quali ad esempio quelle aerospaziali, ha posto l'attenzione su tecniche, come quella termoelastica, che consentono una valutazione delle sollecitazioni rapida e a campo intero. Parallelamente risulta di estremo interesse la valutazione dell'integrità strutturale del componente in esame mediante controlli non distruttivi come quelli con ultrasuoni

U. Galietti; C. Pappalettere



The Value of Literacy Beyond Reading: Empowering Adult Women Through Knowledge and Con...dence  

E-print Network

The Value of Literacy Beyond Reading: Empowering Adult Women Through Knowledge and Con funded by the Social Science Research Council of Canada. 1 #12;Abstract Adult female literacy around the world to institute large scale adult literacy programs. However, evidence on the e

Bandyopadhyay, Antar


La Universidad de Alicante coordina un nuevo proyecto Erasmus Mundus con 21 universidades  

E-print Network

entre las universidades europeas que ha obtenido financiación externa para la movilidad e intercambio de, gracias a un nuevo proyecto denominado "Proyecto de Movilidad Transeuropea sobre la Educación para el Arquitectura. El proyecto contará con un presupuesto de 3.508.975 de euros y ofrecerá 212 becas de movilidad

Escolano, Francisco


Hand Detection on Sign Language Videos Zhong Zhang, Christopher Conly, and Vassilis Athitsos  

E-print Network

Hand Detection on Sign Language Videos Zhong Zhang, Christopher Conly, and Vassilis,, ABSTRACT For gesture and sign language recognition, hand shape and hand an efficient and reliable hand detector is therefore an important step in recognizing signs and gestures

Athitsos, Vassilis


Con il patrocinio di / Sponsored by IRCCS, Santa Lucia Foundation, Roma  

E-print Network

Neuroscience and society Marzo / March 11-13, 2013, Rome Cognitive and Social Neuroscience Laboratory da un Neuroscienze Sociali e Cognitive / Speakers from Social and Cognitive Neuroscience Lab: o Enea Francesco Pavone dopo stimolazione del volto in persone con lesione al midollo spinale" - "The rubber hand illusion

Di Pillo, Gianni



Microsoft Academic Search

Con el objetivo de mejorar los resultados en la labor de prevención y atención social en el municipio Jesús Menéndez, contribuir al perfeccionamiento de la gestión institucional de las organizaciones laborales en el territorio y fortalecer la pertinencia de la carrera de Licenciatura en Psicología de la Sede Universitaria Municipal Jesús Menéndez, se adecuan los programas de estudio de la

Aliek Méndez Bordón; Marlene Goytizolo Andreus



Abstract A model of "distributed cognition" is con-trasted with the "mental representation" model exempli-  

E-print Network

Abstract A model of "distributed cognition" is con- trasted with the "mental representation" model exempli- fied by Tomasello and Call's Primate Cognition. Rather than using behavior as a basis interactions as, themselves, directly observable cognitive events. Similar to a Vygotskian ap- proach

Kirsh, David


Mul$-scale Demand-Side Management for Con$nuous Power-intensive Processes  

E-print Network

and uncertainty in prices · Timing and produc(on quan((es (DR)* · Inventory management inventory facilitate performing Demand-side Management (DSM) at air separa$on plants1 Mul$-scale Demand-Side Management for Con$nuous Power-intensive Processes

Grossmann, Ignacio E.


Salud con Sabor Latino: a culturally sensitive obesity prevention curriculum in an underserved Latino community  

Microsoft Academic Search

Salud con Sabor Latino is a culturally sensitive obesity prevention curriculum that incorporates the traditions and values of the Latino community and family. The 4-week curriculum meets twice a week and includes an education and cooking component. Key components of the curriculum are portion size, reading food labels, taking small steps, eating a variety of foods, and the importance of

Christina Araiza; Maria Valenzuela; Bonnie Gance-Cleveland



Formulación de alimentos para celíacos con base en mezclas de harinas de quínoa, cereales y almidones  

Microsoft Academic Search

RESUMEN. Se formularon alimentos sin gluten para celíacos en base a mezclas de harina de quínoa (Chenopodium quinoa), arroz y maíz con almidones. Para la formulación de estos alimentos se usó la herramienta informática (ALIM V1.0) desarrollada por los auto- res. Se obtuvieron panqueques, scones, prepizza y pan, los cuales fueron evaluados en composición química (proteínas, grasas, ceni- zas, fibras,

Valeria Del Castillo; Gerardo Lescano; Margarita Armada


DIGITAL.CSIC: "Catalogacin con Dublin Core, gestin de derechos de  

E-print Network

DIGITAL.CSIC: "Catalogación con Dublin Core, gestión de derechos de autor y permisos de editores;Copyright y el acceso abierto #12;¿De qué estamos hablando? · Derechos de autor: conjunto de normas y principios que regulan los derechos morales y patrimoniales que la ley concede a los autores por el solo


Accordo con il Teatro Nuovo di Milano Stagione 2009/10 Destinatari  

E-print Network

dell'Università degli Studi di Milano con tesserino UNIMI e documento d'identità, sino ad esaurimento diritto, ad un biglietto ridotto del 50% sul biglietto intero del settore poltrona, per il titolare ed un incontra l'anima del Gospel. da mar. 29 dicembre 2009 a Loretta Goggi S.P.A. mer. 06 gennaio

De Cindio, Fiorella


Medidas antropométricas como predictores del comportamiento lipídico sérico en adolescentes con síndrome de Down  

Microsoft Academic Search

Current findings suggest that more attention needs to be gi- ven to the increase in body mass being achieved by disabled populations in general and individuals with mental retarda- tion in particular, to minimize long-term negative health con- sequences. Given that physical activity programs have been reported as one of the most effective ways of improving the health of individuals

Francisco Javier Ordóñez-Munoz; Manuel Rosety-Rodríguez; Jesús María Rosety-Rodríguez; Manuel Rosety-Plaza


Pros and Cons of Teaching Reading to Four- and Five-Year-Olds.  

ERIC Educational Resources Information Center

There are many pros and cons to the recent trend of early reading. The opponents fear that too much emphasis on early reading may lead to a less rounded development of the child; they agree on providing the child with richer and more varied experiences to insure reading readiness. The advocates believe that today's children have already had more…

Ollila, Lloyd O.


Annotating Web Images using NOVA: NOn-conVex group College of Computer Science,  

E-print Network

Annotating Web Images using NOVA: NOn-conVex group spArsity Fei Wu College of Computer Science, NOVA is the first to introduce non-convex penalty for group selection in high-dimensional heterogeneous it uses non-convex penalty, it achieves the consistency. We demonstrate the superior performance of NOVA

Rui, Yong


Violación del Principio de Equivalencia en Teorías con Dilatón de Cuerdas  

Microsoft Academic Search

Se estudian las violaciones al Principio de Equivalencia en Teorías con Dilatón de Cuerdas. En estos modelos, algunas de las constantes fundamentales dependen del espacio y del tiempo. Se muestra que los experimentos de caída libre no tienen aún precisión como para poner límites a los parámetros de la teoría.

S. J. Landau; P. D. Sisterna; H. Vucetich



Non Invasive Biomedical Analysis - Breath Networking Session at PittCon 2011, Atlanta, Georgia  

EPA Science Inventory

This was the second year that our breath colleagues organized a networking session at the Pittsburgh Conference and Exposition or ''PittCon'' ( time it was called "Non-invasive Biomedical Analysis" to broaden the scope a bit, but the primary focus rema...


conStruction MAnAgeMent College of Rural and Community Development  

E-print Network

The construction management program meets growing needs in the con- struction industry by training entry to the largest of skyscrapers and industrial projects; and on rural roads to major highways. Construction principles of busi- ness and know about the technical aspects of the construction industry. Graduates

Hartman, Chris


DESign AnD conStruction College of Engineering and Mines  

E-print Network

in the construction industry. The program was designed in collaboration with construction industry em- ployers and continues to engage industry as a partner in the program. Engineers and other construction professionalsDESign AnD conStruction MAnAgEMEnt College of Engineering and Mines Department of Civil

Hartman, Chris


INTRODUCTION Recent studies have demonstrated that resting state fMRI (rs-fMRI) con-  

E-print Network

INTRODUCTION Recent studies have demonstrated that resting state fMRI (rs-fMRI) con- nectivity to the need for: (1) a training dataset, (2) a-priori information about informative connections, and a (3 PROCESSING AT THE SINGLE SUBJECT LEVEL USING WHOLE-BRAIN FMRI CONNECTIVITY METHODS ( Experimental Paradigm

Bandettini, Peter A.


Enrichment of Glycoproteins using Nano-scale Chelating Con A Monolithic Capillary Chromatography  

PubMed Central

Immobilized lectin chromatography can be employed for glycoprotein enrichment, but commonly used columns have limitations of yield and resolution. In order to improve efficiency and to make the technique applicable to minimal sample material, we have developed a nano-scale chelating Concanavalin A (Con A) monolithic capillary prepared using GMA-EDMA (glycidyl methacrylate–co-ethylene dimethacrylate) as polymeric support. Con A was immobilized on Cu(II)-charged iminodiacetic acid (IDA) regenerable sorbents by forming a IDA:Cu(II):Con A sandwich affinity structure that has high column capacity as well as stability. When compared with conventional Con A lectin chromatography, the monolithic capillary enabled the better reproducible detection of over double the number of unique N-glycoproteins in human urine samples. Utility for analysis of minimal biological samples was confirmed by the successful elucidation of glycoprotein profiles in mouse urine samples at the microliter scale. The improved efficiency of the nano-scale monolithic capillary will impact the analysis of glycoproteins in complex biological samples, especially where only limited material may be available. PMID:19366252

Feng, Shun; Yang, Na; Pennathur, Subramaniam; Goodison, Steve; Lubman, David M.



Adsornftl 8~f^Ll* ORNL/CON-155 O173IS1o COp  

E-print Network

of Stirling Engine Thermodynamics N. C. J. Chen F. P. Griffin C. D. West OPERATED BY TAHP *MARTIN MARIETTA Government or any agency thereof. #12;ORNL/CON-155 LINEAR HARMONIC ANALYSIS OF STIRLING ENGINE THERMODYNAMICS ................... 8 2.3 Integrated Energy Equations ......................... 11 2.4 Engine Performance Parameters

Oak Ridge National Laboratory


The crystal structures of the calcium-bound con-G and con-T[K7gamma] dimeric peptides demonstrate a metal-dependent helix-forming motif.  


Short peptides that have the ability to form stable alpha-helices in solution are rare, and a number of strategies have been used to produce them, including the use of metal chelation to stabilize folding of the backbone. However, no example exists of a structurally well-defined helix stabilized exclusively through metal ion chelation. Conantokins (con)-G and -T are short peptides that are potent antagonists of N-methyl-D-aspartate receptor channels. While con-G exhibits no helicity alone, it undergoes a structural transition to a helical conformation in the presence of a variety of multivalent cations, especially Mg2+ and Ca2+. This complexation also results in antiparallel dimerization of two peptide helices in the presence of Ca2+, but not Mg2+. A con-T variant, con-T[K7gamma], displays very similar behavior. We have solved the crystal structures of both Ca2+/con-G and Ca2+/con-T [K7gamma] at atomic resolution. These structures clearly show the nature of the metal-dependent dimerization and helix formation and surprisingly also show that the con-G dimer interface is completely different from the con-T[K7gamma] interface, even though the metal chelation is similar in the two peptides. This represents a new paradigm in helix stabilization completely independent of the hydrophobic effect, which we define as the "metallo-zipper." PMID:17243678

Cnudde, Sara E; Prorok, Mary; Dai, Qiuyun; Castellino, Francis J; Geiger, James H



Deutsche Bank Deutsche Bank S.p.A. la consociata italiana di Deutsche Bank AG che, con oltre  

E-print Network

Deutsche Bank Deutsche Bank S.p.A. è la consociata italiana di Deutsche Bank AG che, con oltre 100.000 collaboratori in più di 72 Paesi nel mondo, vanta più di 24 milioni di clienti. Deutsche Bank ricerca brillanti laureati con ottime capacità relazionali, realizzative e cognitive. Posizione Addetto Personal Banking

Robbiano, Lorenzo


76 FR 54533 - Pipeline Safety: Issuance of Draft Decision on GexCon US, Inc. Petition for Approval of Flame...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Decision on GexCon US, Inc. Petition for Approval of Flame Acceleration Simulator AGENCY: Pipeline and Hazardous Materials Safety...Decision on GexCon US, Inc.'s petition for approval of Flame Acceleration Simulator (FLACS). The Draft Decision is available...



Añadir quimioterapia después de la radioterapia mejora la supervivencia de adultos con un tipo de tumor cerebral de crecimiento lento

Adultos con gliomas de grado bajo, una forma de tumor cerebral, que recibieron tratamiento con quimioterapia después de la radioterapia vivieron más tiempo que pacientes que recibieron solo radioterapia, según los resultados de seguimiento a largo plazo de un estudio clínico aleatorizado y controlado, subvencionado por los NIH.


Comparacion internacional del gasto publico en Sanidad y Educacion de España con los paises de la OCDE 1982-96  

Microsoft Academic Search

En este trabajo analizamos el nivel del gasto publico en Sanidad y Educacion de España comparandolo con otros paises europeos y de la OCDE. El analisis incluye un modelo econometrico que estima la elasticidad del gasto con respecto al PIB y al numero de estudiantes. La principal conclusion es que España tiene un nivel bajo de gasto total, publico y

Isabel Neira; Ana Iglesias



Trabajo con Comunidades y Grupos : dominación y resistencia. Procesos que nos llevan a plantear tareas permanentes y cotidianas  

Microsoft Academic Search

Este trabajo presenta algunas ideas con respecto a las tareas permanentes y cotidianas, que se sugieren considerar en el trabajo colectivo en las comunidades y con los grupos en los que participamos. La convivencia humana, como práctica socio-cultural se convierte en una de las vivencias más complejas e importantes que son capaces de gestar lo que en el mundo actual

Teresa Cordero Cordero




E-print Network


Nair, Girish


A brief guide to access the Wound Healing and Management (WHAM) Node via JBI COnNECT+  

E-print Network

A brief guide to access the Wound Healing and Management (WHAM) Node via JBI COnNECT+ To access JBI COnNECT+ and the Wound Healing and Management Node go to JBI Homepage at http and password are both the same word: - wound. #12; To go directly to the Wound Healing and Management Node


Probing of Brain States in Real-Time: Introducing the ConSole Environment  

PubMed Central

Recent years have seen huge advancements in the methods available and used in neuroscience employing EEG or MEG. However, the standard approach is to average a large number of trials for experimentally defined conditions in order to reduce intertrial-variability, i.e., treating it as a source of “noise.” Yet it is now more and more accepted that trial-to-trial fluctuations bear functional significance, reflecting fluctuations of “brain states” that predispose perception and action. Such effects are often revealed in a pre-stimulus period, when comparing response variability to an invariant stimulus. However such offline analyses are disadvantageous as they are correlational by drawing conclusions in a post hoc-manner and stimulus presentation is random with respect to the feature of interest. A more direct test is to trigger stimulus presentation when the relevant feature is present. The current paper introduces Constance System for Online EEG (ConSole), a software package capable of analyzing ongoing EEG/MEG in real-time and presenting auditory and visual stimuli via internal routines. Stimulation via external devices (e.g., transcranial magnetic stimulation) or third-party software (e.g., PsyScope X) is possible by sending TTL-triggers. With ConSole it is thus possible to target the stimulation at specific brain states. In contrast to many available applications, ConSole is open-source. Its modular design enhances the power of the software as it can be easily adapted to new challenges and writing new experiments is an easy task. ConSole is already pre-equipped with modules performing standard signal processing steps. The software is also independent from the EEG/MEG system, as long as a driver can be written (currently two EEG systems are supported). Besides a general introduction, we present benchmark data regarding performance and validity of the calculations used, as well as three example applications of ConSole in different settings. ConSole can be downloaded at: PMID:21716603

Hartmann, Thomas; Schulz, Hannah; Weisz, Nathan



Air Traffic Management Technology Demonstration-1 Concept of Operations (ATD-1 ConOps)  

NASA Technical Reports Server (NTRS)

The operational goal of the ATD-1 ConOps is to enable aircraft, using their onboard FMS capabilities, to fly Optimized Profile Descents (OPDs) from cruise to the runway threshold at a high-density airport, at a high throughput rate, using primarily speed control to maintain in-trail separation and the arrival schedule. The three technologies in the ATD-1 ConOps achieve this by calculating a precise arrival schedule, using controller decision support tools to provide terminal controllers with speeds for aircraft to fly to meet times at a particular meter points, and onboard software providing flight crews with speeds for the aircraft to fly to achieve a particular spacing behind preceding aircraft.

Baxley, Brian T.; Johnson, William C.; Swenson, Harry; Robinson, John E.; Prevot, Thomas; Callantine, Todd; Scardina, John; Greene, Michael



Decay estimates for a nonlocal p-Laplacian evolution problem with mixed boundary con-  

E-print Network

Decay estimates for a nonlocal p-Laplacian evolution problem with mixed boundary con- ditions Ra p-Laplacian evolution problem with mixed boundary conditions, that is, ut(x, t) = 0 J(x - y)|u(y, t) - u(x, t)|p-2 (u(y, t) - u(x, t)) dy for (x, t) Ã? R+ and u(x, t) = 0 in 0 Ã? R+ . The proof

Rossi, Julio D.


Pro/con debate: Is etomidate safe in hemodynamically unstable critically ill patients?  

PubMed Central

Etomidate is an induction agent known for its smooth intubating conditions and cardiovascular stability. Studies, however, have shown that a single dose of etomidate can result in a prolonged adrenal insufficiency. The impact of this in patients with sepsis has been a matter for debate. This review presents a pro/con case for using etomidate in hemodynamically unstable critically ill patients and provides guidance for alternative induction techniques and when the use of etomidate might be justified despite these concerns. PMID:22809235



Video Phone 4.3 Inch LCD Display, Touch Screen , RemoCon  

E-print Network

Connector · Network Interface ­ Two(2) 10/100Mbps Fast Ethernet (RJ45) ­ One(1) RS-232C Interface (RJ45 Video In/Out Audio In/Out Fast Ethernet (LAN,WAN) RS232C Console #12;6 · Various Video Networking Number Register Recent Call Speed Dial IrDA RemoCon #12;13 Network Setup OSD (VoIP, LAN, etc) Internet


NASA KSC/AFRL Reusable Booster System (RBS) Concept of Operations (ConOps)  

NASA Technical Reports Server (NTRS)

This slide presentation reviews the study and findings of the study on the Concept of Operations (ConOps) for Reusable Booster System (RBS) centering on rapid turnaround and launch of a two-stage partially reusable payload delivery system (i.e., 8 hours between launches). The study was to develop rapid ground processing (aircraft like concepts) and identify areas for follow-on study, technology needs, and proof-of-concept demonstrations.

Zeno, Dnany; Mosteller, Ted; McCleskey, Carey; Jhnson, Robert; Hopkins, Jason; Miller, Thomas



IAU Symp. 240: Binary Stars as Critical Tools & Tests in Con-temporary Astrophysics  

E-print Network

IAU Symp. 240: Binary Stars as Critical Tools & Tests in Con- temporary Astrophysics Proceedings Astronomical Union DOI: 00.0000/X000000000000000X EUVE J0825-16.3 and EUVE J1501-43.6: two dMe double telescope confirm the binary nature of the dMe stars EUVE J0825-16.3 and EUVE J1501-43.6, previously

Complutense de Madrid, Universidad


Foglio di esercizi N. 3 1. Con il linguaggio degli "o-piccolo": per x 0  

E-print Network

Foglio di esercizi N. 3 1. Con il linguaggio degli "o-piccolo": per x 0 2x = 1 + x log 2 + o(x), 3x = 1 + x log 3 + o(x), quindi 2x - 3x = (log 2 - log 3)x + o(x). Dato che -1 sin 1 x 1, si ha -x x sin 1 x x, e quindi (per il teorema dei due carabinieri) lim x0+ x sin 1 x = 0, ovvero x sin 1 x

Tauraso, Roberto


Disfrute del sol con cuidado -- Cualquier persona puede padecer cáncer de piel

Está bien pasar algún tiempo al aire libre, pero usted debe saber que las personas de piel más oscura –incluso muchos hispanos o latinos– tienen riesgo de padecer cáncer de piel. Siempre que pueda, evite exponerse al sol, especialmente entre las 10 a.m. y las 4 p.m., cuando los rayos del sol son más fuertes. Si trabaja o juega al aire libre, cúbrase y protéjase la piel con prendas de vestir, sombreros, lentes, filtros solares.


Mound-ACT*DE*CON{sup SM} feasibility study. Phase 2: Final report  

SciTech Connect

A portion of the abandoned Miami-Erie Canal paralleling the Greater Miami River receives the runoff and storm-water discharge from Mound Laboratory. In 1969, a low-level plutonium leak contaminated sediment as far away as 1.5 mi from the Mound site along the old canal system. An estimated one million cubic feet of sediment requires remediation. The technology being evaluated for the remediation of the low-level plutonium-238 contamination of the sediment involves two processes: washing the sediments with ACT*DE*CON{sup SM} solution to dissolve the contaminant, followed by extraction of the solution and processing with the MAG*SEP{sup SM} process to concentrate the contaminant and allow reuse of the ACT*DE*CON{sup SM} solution. The processes are being optimized for pilot-scale and field demonstration. Phase 2 of the project primarily involved identification at the laboratory scale of the optimal ACT*DE*CON{sup SM} formulation, identification of the ion-exchanger and MAG*SEP{sup SM} particles, verification of the plutonium mobility in the treated soil, and evaluation of other process parameters according to a series of tasks.




The Transcription Factor Con7-1 Is a Master Regulator of Morphogenesis and Virulence in Fusarium oxysporum.  


Previous studies have demonstrated the essential role of morphogenetic regulation in Fusarium oxysporum pathogenesis, including processes such as cell-wall biogenesis, cell division, and differentiation of infection-like structures. We identified three F. oxysporum genes encoding predicted transcription factors showing significant identities to Magnaporthe oryzae Con7p, Con7-1, plus two identical copies of Con7-2. Targeted deletion of con7-1 produced nonpathogenic mutants with altered morphogenesis, including defects in cell wall structure, polar growth, hyphal branching, and conidiation. By contrast, simultaneous inactivation of both con7-2 copies caused no detectable defects in the resulting mutants. Comparative microarray-based gene expression analysis indicated that Con7-1 modulates the expression of a large number of genes involved in different biological functions, including host-pathogen interactions, morphogenesis and development, signal perception and transduction, transcriptional regulation, and primary and secondary metabolism. Taken together, our results point to Con7-1 as general regulator of morphogenesis and virulence in F. oxysporum. PMID:25271883

Ruiz-Roldán, Carmen; Pareja-Jaime, Yolanda; González-Reyes, José Antonio; G-Roncero, M Isabel



Con_A-carbone nanotube conjugate with short wave near-infrared laser ablation for tumor therapy  

NASA Astrophysics Data System (ADS)

Using the characteristics of T cell mitogen called lectin protein from the jack-beam Canavalia ensiformis Concanavalin A (Con_A) with dual activities, cytotoxicity and immunomodulation, we have shown it has a therapeutic effect on hepatoma. Injection of Con_A can eradicate the established malign tumor, because Con_A can induce tumor cell autophagic, cell-programmed death, as well as activate the effector T cells. Combined, in this paper, with the absorption exceeding the Carbon NanoTube (CNT) band-gap (?bg=~1/CNT diameter) with an active short wave near-infrared (SWIR) (1.2~1.5 micron wavelengths), which happened to be translucent to the irradiation upon animal skin, similar to that used in hospital fingertip-clamped Pulse Oxymetry. Once the Con_ACNT is guided to hepatoma cells, it is bonded and internalized into the mitochondria (MC) compartment, the cellular energy factory. Con_A has the higher specificity for tumor cells useful for targeting because of the abnormal glycosylation on tumor cells. When CNT hitch hike with Con_A, they can t together like a laser-denotable chemical missile surgically targeting at the tumor cells precisely by Con_A-guidance. We switch on SWIR laser, when the Con_A-CNT conjugated complex has been bonded and internalized to MC of malign cells and already commenced cellular programmed death. Thus, it might appear to casual readers that we have initiated an overkill, chemical drugged autophage followed with physical laser ablation, but what if we can eradicate hepatoma totally if no blue print is left behind inadvertently in case of a partial failure. We conclude that using Con_A-CNT conjugated complex targeting specifically at malign tumor cells is a novel targeted-laser-radiation therapy for tumors in mice.

Lei, Huan-Yao; Peng, Ching-An; Tang, Ming-Jer; Reindhart, Kit; Szu, Harold H.



Los NIH anuncian el lanzamiento de 3 estudios integrados de medicina de precisión; ALCHEMIST es para pacientes con ciertos tipos de cáncer de pulmón en estadio inicial

Los Estudios sobre la Secuenciación e Identificación de Marcadores para el Mejoramiento de la Terapia Adjuvante para el Cáncer de Pulmón, conocidos con el nombre de ALCHEMIST, identificarán a pacientes con cáncer de pulmón en estadio inicial cuyos tumores albergan ciertos cambios genéticos, y evaluarán si los tratamientos con medicamentos que actúan sobre esos cambios pueden mejorar la supervivencia.


Analytical studies of groundwater-head uctuation in a coastal conned aquifer overlain by a semi-permeable layer with storage  

E-print Network

in the groundwater- head ¯uctuation in the con®ned aquifer. While leakage is generally more important than storage greater than the storage coecient of the con®ned aquifer. This assumption may not be valid whenAnalytical studies of groundwater-head ¯uctuation in a coastal con®ned aquifer overlain by a semi

Jiao, Jiu Jimmy


The rights, tensions, and ideas that inform the con-temporary human experience were explored by the  

E-print Network

The rights, tensions, and ideas that inform the con- temporary human experience were explored Trustee. Examining the Human Experience ANDREAKANE CLIFFMOORE #12;; and the conception and challenges of human rights from historical, philo- sophical, political, and sociological


32 Wesley C. Salmon -it has been appropriate to deny that such appeals to functions involve the con-  

E-print Network

32 Wesley C. Salmon -it has been appropriate to deny that such appeals to functions involve the con's (1962) defense of deductive explanation in her contribution to the third volume #12;34 Wesley C. Salmon

Fitelson, Branden


The Credibility Revolution in Empirical Economics: How Better Research Design is Taking the Con out of Econometrics  

E-print Network

Just over a quarter century ago, Edward Leamer (1983) reflected on the state of empirical work in economics. He urged empirical researchers to “take the con out of econometrics” and memorably observed (p. 37): “Hardly ...

Angrist, Joshua



Extenso estudio realizado en muchos centros demuestra que hay una precisión comparable de la colonoscopia virtual con la colonoscopia convencional

Según los resultados del Estudio Nacional de Colografía de Tomografía Computarizada de la American College of Radiology Imaging Network, ACRIN, la colografía de tomografía computarizada, también conocida como colonoscopia virtual, es comparable a la colonoscopia convencional en su capacidad para detectar con precisión cáncer y pólipos precancerosos y podría servir como examen selectivo inicial de detección de cáncer colorrectal. La colonoscopia convencional usa un tubo largo, flexible, con cámara, para ver el revestimiento del colon.


Víctimas y victimarios: Cómplices del discurso del poder en Una noche con el Sr. Magnus e hijos de Ricardo Monti  

E-print Network

FALL 1989 37 Víctimas y victimarios: Cómplices del discurso del poder en Una noche con el Sr. Magnus e hijos de Ricardo Monti Roberto Previdi Froelich ... porque nunca podemos odiar a las personas que sabemos son capaces de hacer exactamente... en los lados ocultos que encarnan la sutil naturaleza de la ideología burguesa en su discurso del poder. Si bien presenciamos una evidente ruptura con una construcción tradicional del realismo teatral,1 el teatro de Monti, a través de sus...

Previdi Froelich, Roberto



Esercizi quarta settimana1 Determinare lo sviluppo asintotico delle seguenti funzioni nella scala delle potenze per x 0 con  

E-print Network

delle potenze per x 0 con almeno tre termini consecutivi: ex - sin x - 1 sinh2 x (1 - cosh x) sin x 3 x + x4 cos sin x sin(1 - cos x) esin x cos x + sin x ex2 Determinare lo sviluppo asintotico delle seguenti funzioni nella scala delle potenze per x + con almeno tre termini consecutivi: 3 x + x4 sinh sin

Marconi, Umberto


Presentación del estudio “Links” de hombres que tienes sexo con hombres en Buenos Aires, Argentina  

PubMed Central

Resumen Estudios previos en Buenos Aires reportaron altas prevalencias de HIV entre HSH, con valores que oscilan entre 9 y 14% durante casi 10 años de continuo testeo. El objetivo principal de este estudio fue la evaluación de factores relacionados al comportamiento de alto riesgo para transmisión del HIV entre HSH entre los que se incluyen el conocimiento y factores emocionales, socioculturales y ambientales. Por otro lado se realizó la estimación de prevalencia e incidencia de HIV utilizando RDS (Respondent Driven Sampling), así como la presencia de otras infecciones de transmisión sexual. Por último se evaluaron los hábitos de testeo para HIV indagando que factores facilitan o impiden su realización. El estudio constó de dos fases, en primer lugar una fase cualitativa y posteriormente una fase cuantitativa con una duración total de 4 años y medio. Durante la fase cualitativa se realizaron 44 entrevistas individuales en profundidad, 8 grupos focales y 10 observaciones etnográficas (hoteles, baños públicos (“teteras”), cines pornográficos, fiestas privadas, dark rooms y discotecas). Durante la fase cuantitativa del estudio se realizó el reclutamiento de 500 participantes que provinieron de la Ciudad Autónoma de Buenos Aires, así como del Gran Buenos Aires. El reclutamiento se comenzó con 16 participantes llamados semillas. Se realizó el diagnóstico de infección por HIV, hepatitis B y C (HBV y HCV), Treponema pallidum, Virus Papiloma Humano (HPV) y Chlamidias. La colaboración establecida entre los grupos de trabajo enfocados en áreas diversas posibilitó el abordaje conjunto de nuevas estrategias de investigación antes no exploradas en nuestro país. Los resultados más relevantes de esta investigación serán progresivamente publicados en sucesivos números de Actualizaciones en SIDA. PMID:25264397

Carballo-Diéguez, Alex; Ávila, María M; Balán, Iván C.; Marone, Rubén; Pando, María A.; Barreda, Victoria



Perceived pros and cons of smoking and quitting in hard-core smokers: a focus group study  

PubMed Central

Background In the last decade, so-called hard-core smokers have received increasing interest in research literature. For smokers in general, the study of perceived costs and benefits (or ‘pros and cons’) of smoking and quitting is of particular importance in predicting motivation to quit and actual quitting attempts. Therefore, this study aims to gain insight into the perceived pros and cons of smoking and quitting in hard-core smokers. Methods We conducted 11 focus group interviews among current hard-core smokers (n = 32) and former hard-core smokers (n = 31) in the Netherlands. Subsequently, each participant listed his or her main pros and cons in a questionnaire. We used a structural procedure to analyse the data obtained from the group interviews and from the questionnaires. Results Using the qualitative data of both the questionnaires and the transcripts, the perceived pros and cons of smoking and smoking cessation were grouped into 6 main categories: Finance, Health, Intrapersonal Processes, Social Environment, Physical Environment and Food and Weight. Conclusions Although the perceived pros and cons of smoking in hard-core smokers largely mirror the perceived pros and cons of quitting, there are some major differences with respect to weight, social integration, health of children and stress reduction, that should be taken into account in clinical settings and when developing interventions. Based on these findings we propose the ‘Distorted Mirror Hypothesis’. PMID:24548463



Fully digital control of a three phase UPS by VeCon integrated controller  

SciTech Connect

This paper presents a fully digital control technique for voltage-fed three-phase inverters to be used in uninterruptible power supplies. An application-specific digital signal processor (VeCon) is used to attain the regulation of the output voltages, which is maintained also in presence of wide load variations. After a short description of the system, attention is focused on VeCon`s performances and implemented control algorithm. Even if no transformer is used in the power converter, the line-to-neutral voltages are independently controlled thus allowing supply of single-phase or unbalanced loads. An inner current control loop is implemented to provide limitation of the phase currents in case of short circuit and overload. Each current and voltage is controlled by a digital PI regulator. The overall control takes less than 20 {micro}s. Sinusoidal output voltages and well controlled phase currents are attained, as demonstrated by experimental results coming from a 15 kVA prototype.

Rossetto, L.; Malesani, L.; Tenti, P.; Buso, S. [Univ. of Padova (Italy); Pollmann, A. [CEMONT SpA, Rivoli (Italy)



Actitudes Éticas de los estudiantes y egresados en carrera de medicina con metodologías activas  

PubMed Central

El presente estudio tiene por objeto desarrollar un diagnostico de la inserción integrada de la ética en la carrera de medicina brasileña con una metodología de aprendizaje basada en problemas y describir las percepciones de actitudes éticas de los estudiantes y egresados. El diseño metodológico es un estudio de caso, descriptivo y documental, con abordaje cualitativo y cuantitativo. La muestra de esta investigación ha sido constituida por 120 estudiantes y 40 egresados de dos promociones del Curso de Medicina de la ESCS. Este proyecto fue aprobado por el Comité de Ética en Investigación - SES/DF. Los estudiantes y egresados de la ESCS demostraron un buen manejo en el abordaje de los conflictos éticos y respeto a los pacientes. Sin embargo, el análisis de sensibilidad ética mostró una fragilidad en las percepciones y aptitudes inapropiadas de los estudiantes de la carrera de medicina, identificada básicamente en los años iniciales, que necesitan más discusiones sistematizadas sobre los aspectos éticos y bioéticos integrados a las actividades prácticas para estimular y fortalecer la reflexión ética de los estudiantes. PMID:20981242

Novaes, Maria Rita Carvalho Garbi; Novaes, Luiz Carlos Garcez; Guilhem, Dirce; Stepke, Fernando Lolas; Silveira, Carla Cristina Costa; Komatsu, Ricardo Shoiti; Trindade, Eliane Mendonça Vilar; Guiotti, Murilo Galvão



Feeding of grey squirrels (Sciurus carolinensis) with the contraceptive agent DiazaCon™: effect on cholesterol, hematology, and blood chemistry.  


Grey squirrels (Sciurus carolinensis) are an invasive species in Britain and Italy. They have replaced native red squirrels (Sciurus vulgaris) throughout most of Britain, and cause damage to trees. Currently, lethal control is used to manage grey squirrel populations in Britain, but nonlethal methods might be more acceptable to the public. One such method is contraception with 20,25-diazacholesterol dihydrochloride (DiazaCon™). DiazaCon™ inhibits the conversion of desmosterol to cholesterol, resulting in increasing desmosterol concentrations and decreasing cholesterol concentrations. Because cholesterol is needed for the synthesis of steroid reproductive hormones, such as progesterone and testosterone, inhibition of cholesterol synthesis indirectly inhibits reproduction. Desmosterol is used as a marker of efficacy in laboratory studies with species that do not reproduce readily in captivity. Grey squirrels were gavaged with a DiazaCon™ solution for 2 days, and then fed DiazaCon™-coated peanuts for an additional 8 days at target doses of 50 and 100 mg DiazaCon™ per kg body weight. There was a significant difference in cholesterol concentrations in the treatment groups compared to the control group. Cholesterol was reduced by ? 40% for 2 months in both treatment groups. There were no differences among groups with respect to blood chemistry and hematology parameters, and mean values are reported. The mean overall dose of DiazaCon™ received was 29.0 ± 1.6 and 55.3 ± 4.3 mg/kg in the low (50 mg/kg) and high dose (100 mg/kg) groups, respectively. DiazaCon™ might provide an effective, acceptable alternative to lethal control. PMID:22182332

Yoder, Christi A; Mayle, Brenda A; Furcolow, Carol A; Cowan, David P; Fagerstone, Kathleen A



Nest destruction elicits indiscriminate con- versus heterospecific brood parasitism in a captive bird.  


Following nest destruction, the laying of physiologically committed eggs (eggs that are ovulated, yolked, and making their way through the oviduct) in the nests of other birds is considered a viable pathway for the evolution of obligate interspecific brood parasitism. While intraspecific brood parasitism in response to nest predation has been experimentally demonstrated, this pathway has yet to be evaluated in an interspecific context. We studied patterns of egg laying following experimental nest destruction in captive zebra finches, Taeniopygia guttata, a frequent intraspecific brood parasite. We found that zebra finches laid physiologically committed eggs indiscriminately between nests containing conspecific eggs and nests containing heterospecific eggs (of Bengalese finches, Lonchura striata vars. domestica), despite the con- and heterospecific eggs differing in both size and coloration. This is the first experimental evidence that nest destruction may provide a pathway for the evolution of interspecific brood parasitism in birds. PMID:25512846

Shaw, Rachael C; Feeney, William E; Hauber, Mark E



The new human papillomavirus (HPV) vaccine: pros and cons for pediatric and adolescent health.  


The new human papillomavirus (HPV) vaccine is a research breakthrough for pediatric/adolescent health to prevent cervical cancer and related morbidity. The annual heath care cost for the treatment of cervical cancer and genital warts is estimated to be more than three billion dollars a year. The new HPV vaccine has incredible potential to improve reproductive health promotion, reduce health care costs, and close health care disparity gaps. However, issues both for and against the new HPV vaccine, including mandating vaccination, high cost of the vaccine, the short duration of protection offered, and the perceived promotion of sexual activity, cause confusion. Pediatric nurses, including those in advanced practice, benefit by understanding the pros and cons of these issues in advocating for their patients. PMID:19051848

Thomas, Tami L



Multipotent (adult) and pluripotent stem cells for heart regeneration: what are the pros and cons?  

PubMed Central

Heart failure after myocardial infarction is the leading cause of mortality and morbidity worldwide. Existing medical and interventional therapies can only reduce the loss of cardiomyocytes during myocardial infarction but are unable to replenish the permanent loss of cardiomyocytes after the insult, which contributes to progressive pathological left ventricular remodeling and progressive heart failure. As a result, cell-based therapies using multipotent (adult) stem cells and pluripotent stem cells (embryonic stem cells or induced pluripotent stem cells) have been explored as potential therapeutic approaches to restore cardiac function in heart failure. Nevertheless, the optimal cell type with the best therapeutic efficacy and safety for heart regeneration is still unknown. In this review, the potential pros and cons of different types of multipotent (adult) stem cells and pluripotent stem cells that have been investigated in preclinical and clinical studies are reviewed, and the future perspective of stem cell-based therapy for heart regeneration is discussed. PMID:24476362



A new look at the infrared spectrum of the weakly bound CO-N2 complex.  


A broad-band (2135-2165 cm(-1)) infrared spectrum of the CO-N2 van der Waals complex is obtained, using a tunable quantum cascade laser to probe a pulsed supersonic expansion from a slit jet source. Analysis of the spectrum results in the characterization of four new 'stacks' of rotational levels for CO-orthoN2 (all in the v(CO) = 1 upper state) and five new stacks for CO-paraN2 (three in the upper state and two in the vCO = 0 lower state). This considerably expands our knowledge of a rather fundamental weakly bound complex and should lead to improved determinations of the intermolecular forces governing interactions between the carbon monoxide and nitrogen molecules. PMID:24090526

Rezaei, Mojtaba; Michaelian, K H; Moazzen-Ahmadi, N; McKellar, A R W



Pro-con debate: etomidate or ketamine for rapid sequence intubation in pediatric patients.  


When caring for critically ill children, airway management remains a primary determinant of the eventual outcome. Airway control with endotracheal intubation is frequently necessary. Rapid sequence intubation (RSI) is generally used in emergency airway management to protect the airway from passive regurgitation of gastric contents. Along with a rapid acting neuromuscular blocking agent, sedation is an essential element of RSI. A significant safety concern regarding sedatives is the risk of hypotension and cardiovascular collapse, especially in critically ill patients or those with pre-existing comorbid conditions. Ketamine and etomidate, both of which provide effective sedation with limited effects on hemodynamic function, have become increasingly popular as induction agents for RSI. However, experience and clinical investigations have raised safety concerns associated with both etomidate and ketamine. Using a pro-con debate style, the following manuscript discusses the use of ketamine versus etomidate in RSI. PMID:23118665

Scherzer, Daniel; Leder, Mark; Tobias, Joseph D



Microwave and millimeter wave study of Ortho-N2 states of CO-N2  

NASA Astrophysics Data System (ADS)

Microwave and millimeter wave transitions of the CO-N2 complex were investigated using three different instruments, namely, a pulsed molecular beam Fourier transform microwave spectrometer in the frequency region from 4 to 26 GHz, a microwave-millimeter wave double resonance spectrometer in the frequency regions from 8 to 18 GHz for the microwave and 107-118 GHz for the millimeter wave range, and an OROTRON spectrometer in the frequency range from 107 to 132 GHz. Both a- and b-type transitions associated with the ground-state K=0 levels and the lower K=1 levels of the ortho-N2 states, and with rotational quantum number J up to 19, were measured and analyzed. Nuclear quadrupole hyperfine splittings due to the presence of two equivalent 14N nuclei were resolved and analyzed to give additional information about the angular anisotropy of the interaction potential. The nuclear quadrupole coupling constants obtained are ?aa=0.196 41(52) MHz for K=0 levels, and ?aa=-1.0391(17) MHz, ?bb=0.0633(17) MHz for the lower K=1 levels, respectively. The drastic difference between these two sets of coupling constants suggests that the orientation and motion of the N2 subunit are very different in these two states, and that the complex cannot be adequately described by a semirigid rotor model. In addition, measurements of the rotational spectra of the two new isotopomers containing 13C16O and 13C18O subunits provide further important information about the CO-N2 interaction potential.

Xu, Yunjie; Jäger, Wolfgang; Surin, L. A.; Pak, I.; Panfilov, L. A.; Winnewisser, G.




E-print Network


Escolano, Francisco


NatSci 499 E/F: Integrative Scientific Research (iCons 4; 6 credits) Faculty Contact: Prof. Scott M. Auerbach (iCons Program Director; or  

E-print Network

1 NatSci 499 E/F: Integrative Scientific Research (iCons 4; 6 credits) Faculty Contact: Prof. Scott in authentic scientific research in UMass Amherst faculty research laboratories. UMass Amherst offers a rich a capstone research project that identifies and fills a scientific knowledge gap in their chosen theme area

Auerbach, Scott M.


Análisis de componentes cognoscitivos y psiquiátricos en pacientes con demencia frontotemporal y alzheimer / Analysis of cognitive and psychiatric components in patients with frontotemporal dementia and Alzheimer.  

E-print Network

??Reyes Gavilán, Pablo Alexander (2010) Análisis de componentes cognoscitivos y psiquiátricos en pacientes con demencia frontotemporal y alzheimer / Analysis of cognitive and psychiatric components… (more)

Reyes Gavilán, Pablo Alexander



40 CFR 63.606 - Performance tests and compliance provisions.  

Code of Federal Regulations, 2011 CFR

...using the following equation: P = Mp Rp Where: Mp = total mass flow rate...feed, metric ton/hr (ton/hr). Rp = P2 O5 content, decimal fraction...feed. (ii) The P2 O5 content (Rp ) of the feed shall be determined...



40 CFR 60.204 - Test methods and procedures.  

Code of Federal Regulations, 2011 CFR

...using the following equation: P=Mp Rp where: Mp =total mass flow rate...phosphorus-bearing feed, Mg/hr (ton/hr). Rp =P2 O5 content, decimal fraction...used to determine the P2 O5 content (Rp ) of the feed. [54 FR 6669,...



40 CFR 60.224 - Test methods and procedures.  

Code of Federal Regulations, 2011 CFR

...using the following equation: P=Mp Rp where: Mp =total mass flow rate...phosphorus-bearing feed, Mg/hr (ton/hr). Rp =P2 O5 content, decimal fraction...used to determine the P2 O5 content (Rp ) of the feed. [54 FR 6670,...



40 CFR 60.244 - Test methods and procedures.  

Code of Federal Regulations, 2011 CFR

...using the following equation: P=Mp Rp where: Mp =amount of product in storage, Mg (ton). Rp =P2 O5 content of product in storage...used to determine the P2 O5 content (Rp ) of the product in storage....



40 CFR 60.234 - Test methods and procedures.  

Code of Federal Regulations, 2011 CFR

...using the following equation: P = Mp Rp where: Mp total mass flow rate of...phosphorus-bearing feed, Mg/hr (ton/hr). Rp =P2 O5 content, decimal fraction...used to determine the P2 O5 content (Rp ) of the feed. [54 FR 6670,...



40 CFR 60.214 - Test methods and procedures.  

Code of Federal Regulations, 2011 CFR

...using the following equation: P=Mp Rp where: Mp =total mass flow rate...phosphorus-bearing feed, Mg/hr (ton/hr). Rp =P2 O5 content, decimal fraction...used to determine the P2 O5 content (Rp ) of the feed. [54 FR 6670,...



40 CFR 63.606 - Performance tests and compliance provisions.  

Code of Federal Regulations, 2013 CFR

...Where: Mp = total mass flow rate of phosphorus-bearing feed, metric ton/hr (ton...determine the mass flow rate (Mp ) of the phosphorus-bearing feed. (ii) The P2 O5...Analysis For Phosphate Rock, No. 3 Phosphorus-P2 O5 or Ca3 (PO4 )2...



Steelmaking Slags  

NASA Astrophysics Data System (ADS)

The phosphate-enrichment behavior has experimentally been investigated in CaO-SiO2-FeO-Fe2O3-P2O5 steelmaking slags. The reaction ability of structural units in the slags has been represented the mass action concentration from the developed ion and molecule coexistence theory (IMCT)- model based on the IMCT. The defined enrichment possibility and enrichment degree of solid solutions containing P2O5 from the developed IMCT- model have been verified from the experimental results. The effects of binary basicity, the mass percentage ratio , and mass percentage of P2O5 in the initial slags on phosphate-enrichment behavior in the slags has also been discussed. The results show that the P2O5 component can easily be bonded by CaO to form tricalcium phosphate 3 CaO·P2O5, and the formed 3CaO·P2O5 can react with the produced dicalcium silicate 2CaO·SiO2 to generate solid-solution 2CaO·SiO2-3CaO·P2O5 under fixed cooling conditions. The maximum value of the defined enrichment degree of solid-solution 2CaO·SiO2-3CaO·P2O5 is obtained as 0.844 under conditions of binary basicity as 2.5 and the mass percentage ratio as 0.955 at fixed cooling conditions.

Li, Jin-yan; Zhang, Mei; Guo, Min; Yang, Xue-Min



ScholarShip programS conSideration given to the following min Sat awardS given  

E-print Network

ScholarShip programS conSideration given to the following min Sat (freShmen) and/or gpa number of awardS given & amount renewable? SCHOLARSHIPS AWARDED THROUGH THE UNIVERSITY HONORS PROGRAM University Honors Program Scholarship Incoming freshmen and transfer students who are intellectually curious

Hutcheon, James M.


La Universidad de Alicante premiar el robot hecho por amateurs ms hbil en carreras con otros y pinchando sus globos  

E-print Network

La Universidad de Alicante premiará el robot hecho por amateurs más hábil en carreras con otros y Competición de Robótica Amateur UA, está destinado prioritariamente a estudiantes de esta universidad y forma

Escolano, Francisco


Global trade in dairy products involves complex and con-tentious issues. Viewed broadly from the perspective of  

E-print Network

Global trade in dairy products involves complex and con- tentious issues. Viewed broadly from the perspective of "society," there are large benefits from liberalizing trade. Viewed narrowly from the perspective of dairy producers, liberalized trade is desirable only if it expands exports and reduces imports

Radeloff, Volker C.


Mecanismos psicofisiológicos implicados en la regulación afectiva y la restricción alimentaria de mujeres con riesgo de padecer bulimia nerviosa  

Microsoft Academic Search

El objetivo del estudio fue conocer el efecto de visualizar imágenes de comida bajo diferentes estados de ánimo y diferentes condiciones de restricción alimentaria en la modulación emocional de dos refle- jos defensivos (sobresalto motor y defensa cardiaca). 72 mujeres con riesgo de padecer bulimia ner- viosa fueron asignadas a dos grupos: 1) un grupo al que se inducía un

Sonia Rodríguez; José Luis Mata; Silvia Moreno; Jaime Vila



Sndrome de Waterhouse-Friderichsen: Ms eficacia en el tratamiento con el uso precoz de Protena-C ?  

E-print Network

Síndrome de Waterhouse-Friderichsen: Más eficacia en el tratamiento con el uso precoz de Proteína uniformizados = ... Introducción: Necesidad de mejora del tratamiento del Síndrome de Waterhouse­ Friderichsen

Manstein, Dietmar J.


Genova Silicon Valley 10th Edition Incontro a Economia con Ettore Leale, 29 novembre , ore 17, aula Embriaco  

E-print Network

Genova Silicon Valley 10th Edition Incontro a Economia con Ettore Leale, 29 novembre , ore 17, aula Embriaco E' partito da Genova, nel 2005, il ponte tra Italia e Silicon Valley a beneficio degli studenti social network, hanno partecipato alle 9 edizioni del Silicon Valley Study

Robbiano, Lorenzo


Analysis of Hook Formation Mechanism in Ultra Low Carbon Steel using CON1D Heat Flow Solidification Model  

E-print Network

Analysis of Hook Formation Mechanism in Ultra Low Carbon Steel using CON1D Heat Flow carbon steel, Continuous casting process, Hook formation, Heat flow, Initial solidification Abstract Subsurface hook formation at the meniscus during the continuous casting of steel slabs is an important cause

Thomas, Brian G.


Desarrollo economico de Europa Central en 1950-2002: Modelos econometricos y comparacion con Irlanda, España y Austria  

Microsoft Academic Search

Analizamos el desarrollo económico de cinco países de Europa Central: Polonia, Hungría, República Checa, Eslovenia y Eslovaquia, durante el período 1950-2002. teniendo en cuenta las diferentes etapas de su evolución, en comparación con tres países de Europa Occidental que tenían al comienzo del período analizado niveles similares de renta por habitante, pero que alcanzaron durante las últimas décadas del siglo

Maria-Carmen GUISAN; Eva AGUAYO



Una economía de frontera con el norte Europeo: El desarrollo de Cataluña en los siglos XVIII al XX  

Microsoft Academic Search

El presente ensayo pretende evaluar la contribución que haya podido suponer la condición de territorio de frontera a las particularidades del proceso de desarrollo económico de Cataluña desde el siglo XVIII en adelante. En su mismo nacimiento como espacio político y administrativo diferenciado y con soberanía sobre el territorio, Cataluña fue una frontera o límite: la “Marca Hispánica” que el

Jordi Maluquer de Motes i Bernet



The driver of a sports utility vehicle that overturned last April, killing a Virginia Tech freshman, was con-  

E-print Network

, was con- victed Monday of reckless driving. Jeffrey Stoudt, a sophomore psychology major at Tech in whole- sale value." Virginia tree growers and sell- ers are fearing the worst, said Rick Dungey of the National Christmas Tree Association. "This has got so many consum- ers scared to death," he said. "It

Beex, A. A. "Louis"


Adding Photos Lightbox GalleryCon nued 1 .Toad d im agestoM ood le,inyourtexted itor,  

E-print Network

Adding Photos Lightbox GalleryCon nued 1 .Toad d im agestoM ood le,inyourtexted itor, locate,create a com pressed fold er (.z ip) w ithallthe im agesyou w ould like toad d to the Lightbox Gallery. 2.W

Selmic, Sandra


have to travel normal to the layer structure. The film thickness must be sufficiently small to keep the con-  

E-print Network

the con- tact resistance low (Fig. 3B). 15. M. Shur, M. Hack, J. G. Shaw, J. Appl. Phys. 66, 3371 (1989); M. Shur and M. Hack, ibid. 55, 3831 (1984). 16. G. Horowitz and P. Delannoy, ibid. 70, 469 (1991

Wang, Zhong L.


Cause of injury: Contact with tentacles which con-tain stinging cells that inject venom into the skin.  

E-print Network

JELLYFISH Cause of injury: Contact with tentacles which con- tain stinging cells that inject venom. Prevention: Take care when swimming in areas known to have jellyfish. Tentacles of some species may trail a great distance from the body. Rubber diving suits give protec- tion. Avoid touching jellyfish washed up



EPA Science Inventory

The long-term performance tests provide information on the first follow-up sampling and analysis on the SITE program demonstration of the International Waste Technologies additive, and the Geo-Con deep soil mixing equipment. he samples containing PCBs, were collected one year aft...



EPA Science Inventory

The long-term performance tests provide information on the first follow-up sampling and analysis on the SITE program demonstration of the International Waste Technologies additive, and the Geo-Con deep soil mixing equipment. he samples containing PCBs, were collected one year aft...



EPA Science Inventory

An evaluation was performed of the International Waste Technologies (IWT) HWT-20 additive and the Geo-Con, Inc. deep-soil-mixing equipment for an in situ stabilization/solidification process and its applicability as an on-site treatment method for waste site cleanup. emonstration...


Advances in the development of quantitative models of foreland basin stratigraphy have outpaced the observational data used to con-  

E-print Network

ABSTRACT Advances in the development of quantitative models of foreland basin stratigraphy have outpaced the observational data used to con- strain the input parameters in such models. Underfilled collision (Dickinson, 1974; Beau- mont, 1981; Allen et al., 1986). The sedimentary infill of foreland basins


NOTE PER RICHIESTA DUPLICATO PERGAMENA 1. Compilare la domanda di rilascio duplicato pergamena con marca da bollo di  

E-print Network

Sviluppo e Rapporti con le Imprese ­ Servizio Offerta Formativa Post Laurea ­ Piazza Leonardo da Vinci, 32 Offerta Formativa Post Laurea in Piazza Leonardo da Vinci, 32 ­ Padiglione Nord ­ 1° piano ­ Milano Ritiro titolare presso il Servizio Offerta Formativa e Post Laurea in Piazza Leonardo da Vinci, 32 ­ Padiglione


Nuclear magnetic resonance studies of alkaline earth phosphosilicate and aluminoborosilicate glasses  

Microsoft Academic Search

The 11B, 27Al, 29Si and 31P magic angle spinning (MAS) NMR spectra of MO–P2O5, MO–SiO2–P2O5 and MO(M?2O)–SiO2–Al2O3–B2O3 (M=Mg, Ca, Sr and Ba, M?=Na) glasses were examined. In binary MO–P2O5 (M=Ca and Mg) glasses, the distributions of the phosphate sites, P(Qn), can be expressed by a theoretical prediction that P2O5 reacts quantitatively with MO. In the ternary 0.30MO–0.05SiO2–0.65P2O5 glasses, the 6-coordinated

Hiroshi Yamashita; Hidetake Yoshino; Keishi Nagata; Hyuma Inoue; Takeshi Nakajin; Takashi Maekawa



Pros and cons of BCG vaccination in countries with low incidence of tuberculosis.  


Preventive bacille Calmette-Guérin (BCG) vaccination, together with case finding and effective chemotherapy, has formed an integral part of the tuberculosis (TB) control program in most countries. In some low-incidence countries the balance of prevention has been more on the side of chemoprophylaxis than of BCG vaccination. The time clearly has come when the strategy of mass BCG vaccination no longer is indicated medically, nor is it cost-effective. The pros and cons of the programs need to be critically evaluated against the present epidemiological background, taking into account the facts that TB, the killer disease, is recovering strength, human immunodeficiency virus infection is on the increase, and multidrug-resistant TB has changed the outcome of this previously fully curable disease. Although no longer appropriate for mass programs, BCG vaccination still should be considered for the protection of selected risk groups in low-incidence countries. The overall efficacy may be of the order 50% to 80%, but the variation is great. Therefore, further research urgently is needed on the effectiveness of BCG as an intervention in local TB programs. PMID:7963444

Tala, E O; Tala-Heikkilä, M M



Assessing ComSciCon 2013: A science communication workshop for STEM graduate students (Invited)  

NASA Astrophysics Data System (ADS)

We report on the efficacy of Communicating Science 2013, a science communication workshop for graduate students. Effective science communication is imperative for the sharing of scientific ideas, continued funding and support from policy makers, and education of the public. Science graduate students are a prime group to target for communication training, as they will be our future scientists, educators, and EPO professionals. To this end, Communicating Science 2013 (ComSciCon), a workshop organized by and for STEM graduate students, was held in June of this year. This workshop taught graduate students from around the nation to effectively communicate science to both their peers and the public. To learn about grad students' attitudes toward science communication and establish the workshop's efficacy, we surveyed the participants both before and after the workshop. This assessment probed topics such as communication preparation the participants have already received, how science communication is perceived in their home department, and what participants gained from the workshop. We report the results here.

Kohler, S.; Ranjan, S.; Sanders, N.; Morey, S.



Estereotipos Sexuales y su Relación con Conductas Sexuales Riesgosas1,2,3  

PubMed Central

Resumen Los estereotipos sexuales son creencias generalmente aceptadas y poco cuestionadas que podrían contribuir a cómo los hombres y las mujeres debemos expresar nuestra sexualidad. Los objetivos de este estudio eran identificar cuántos hombres y mujeres heterosexuales en Puerto Rico endosaban ciertos estereotipos acerca de la sexualidad masculina y femenina y explorar la relación entre el endoso de estos estereotipos sexuales y las actitudes hacia el condón masculino y su uso en relaciones sexuales vaginales Llevamos a cabo un estudio descriptivo-correlacional mediante el cual le administramos dos escalas, una sobre sexualidad masculina y otra sobre sexualidad femenina a un grupo de 429 personas heterosexuales. Encontramos que los hombres endosaron estereotipos sexuales masculinos y femeninos más que las mujeres y que estos tienden a tener una visión más conservadora respecto a la sexualidad femenina que la que tienen sobre su propia sexualidad. Las mujeres, por otra parte, tienden a ver su propia sexualidad y la sexualidad masculina en términos menos estereotipados y más equitativos. También encontramos que a mayor endoso de creencias tradicionales sobre la sexualidad masculina y femenina, peor la actitud hacia el uso del condón masculino. Sin embargo, el endosar estereotipos sexuales masculinos y/o femeninos no se relacionó con el uso del condón. Estos hallazgos contradicen la literatura que sugiere que estos estereotipos sexuales y de género resultan en conductas sexuales de alto riesgo, lo cual tiene implicaciones importantes para el desarrollo e implementación de programas de prevención. PMID:24575164

Pérez-Jiménez, David; Orengo-Aguayo, Rosaura E.



Estudio financiado por los NIH indica un aumento de la supervivencia en hombres con cáncer de próstata metastásico que reciben quimioterapia desde el inicio de la terapia hormonal

Los hombres con cáncer de próstata metastásico sensible a las hormonas que recibieron el fármaco quimioterapéutico docetaxel al inicio de la terapia hormonal convencional vivieron más tiempo que los pacientes que recibieron solo terapia hormonal, de acuerdo con los resultados preliminares de un estudio clínico controlado y aleatorizado patrocinado por los Institutos Nacionales de la Salud (NIH).


El control social y su relación con los procesos de formación de capital social y movilidad social: algunos indicios a partir de experiencias en Bogot  

Microsoft Academic Search

Este documento presenta un acercamiento analítico a los posibles efectos provocados por la práctica y el proceso institucional de control social sobre quienes tienen una relación directa o indirecta con estos mecanismos, que se despliegan desde la Contraloría General de la República para cumplir con lo dispuesto en la Constitución Nacional. Estos efectos se establecen a partir de mediciones de

Julián F. Bautista R; Londra T. Niño M; Gemma V. Truke O; Jairo Santander A



Síndrome de Down y cardiopatías congénitas con hipertensión pulmonar severa. Resultados quirúrgicos. Down Syndrome and congenital heart diseases with severe pulmonary hypertension surgical results  

Microsoft Academic Search

RESUMEN La presencia de una hipertensión pulmonar de rango severo es un factor de alto riesgo en el manejo quirúrgico de los pacientes con cardiopatías congénitas, como está demostrado en numerosos estudios referentes a ese tema. El objetivo de este trabajo fue obtener mayor información sobre la evolución posterior a la cirugía cardiaca de los pacientes con Síndrome de Down

Herminia Palenzuela López; Lys Mara; Senra Reyes; Horacio Pérez López; Francisco Carballés García


(Con)text-specific effects of visual dysfunction on reading in posterior cortical atrophy.  


Reading deficits are a common early feature of the degenerative syndrome posterior cortical atrophy (PCA) but are poorly understood even at the single word level. The current study evaluated the reading accuracy and speed of 26 PCA patients, 17 typical Alzheimer's disease (tAD) patients and 14 healthy controls on a corpus of 192 single words in which the following perceptual properties were manipulated systematically: inter-letter spacing, font size, length, font type, case and confusability. PCA reading was significantly less accurate and slower than tAD patients and controls, with performance significantly adversely affected by increased letter spacing, size, length and font (cursive < non-cursive), and characterised by visual errors (69% of all error responses). By contrast, tAD and control accuracy rates were at or near ceiling, letter spacing was the only perceptual factor to influence reading speed in the same direction as controls, and, in contrast to PCA patients, control reading was faster for larger font sizes. The inverse size effect in PCA (less accurate reading of large than small font size print) was associated with lower grey matter volume in the right superior parietal lobule. Reading accuracy was associated with impairments of early visual (especially crowding), visuoperceptual and visuospatial processes. However, these deficits were not causally related to a universal impairment of reading as some patients showed preserved reading for small, unspaced words despite grave visual deficits. Rather, the impact of specific types of visual dysfunction on reading was found to be (con)text specific, being particularly evident for large, spaced, lengthy words. These findings improve the characterisation of dyslexia in PCA, shed light on the causative and associative factors, and provide clear direction for the development of reading aids and strategies to maximise and sustain reading ability in the early stages of disease. PMID:24841985

Yong, Keir X X; Shakespeare, Timothy J; Cash, Dave; Henley, Susie M D; Warren, Jason D; Crutch, Sebastian J



Do Patient-perceived Pros and Cons of Opioids Predict Sustained Higher-Dose Use?  

PubMed Central

Objectives Chronic opioid therapy (COT) is associated with various adverse outcomes, especially at higher doses, yet little is known about predictors of sustained higher-dose COT. This study aimed to ascertain, among higher-dose COT patients, the association of patient-perceived pros and cons of opioids with continued higher-dose use 1 year later. Methods Patients (N = 1229) in 2 large health plans prescribed ? 50 mg morphine-equivalent dose (MED) per day for chronic non-cancer pain completed a survey assessing opioid benefits and harms. The Prescribed Opioid Difficulties Scale questionnaire assessed psychosocial problems, concerns, benefits, and side effects related to opioid use. Logistic regression models estimated the associations of the reported benefits and problems with higher-dose continuation (? 50 mg MED/d) versus dose reduction (< 50 mg MED/d) 1 year later. Results Over 80% of participants continued higher-dose opioid use at 1 year, regardless of reported problems, concerns, side effects, pain reduction, or perceived helpfulness. Higher scores on the Prescribed Opioid Difficulties Scale Problems subscale (odds ratio = 0.79, 95% confidence interval, 0.68–0.92) and Concerns subscale (odds ratio = 0.76, 95% confidence interval, 0.65–0.90) were negatively associated with higher-dose use 1 year later. Other baseline measures (opioid helpfulness, reduction in pain, number of side effects, and side effect bothersomeness) were not significantly associated with continued higher-dose use. Discussion The large majority of patients continued using higher-dose opioids regardless of baseline characteristics. These findings suggest the difficulty of reducing opioid dose among chronic higher-dose opioid users. PMID:23535150

Thielke, Stephen M.; Turner, Judith A.; Shortreed, Susan M.; Saunders, Kathleen; LeResche, Linda; Campbell, Cynthia I.; Weisner, Constance C.; Korff, Michael V.



GP73 was upregulated in PBMC stimulated with ConA but failed to promote lymphocyte proliferation.  


Golgi protein 73-kD (GP73), a type II Golgi transmembrane glycoprotein, is highly expressed in a variety of human diseases, but its physiology and pathology remain unknown. In examining the function of GP73 in the immune system, treatment of human PBMC with ConA significantly increased the intracellular expression of GP73 and its secretion into the culture medium. Two-way MLR and the ConA stimulation assay showed that treatment with purified GP73 protein barely affected the proliferation of PBMC. These results suggest that lymphocyte-secreted GP73 might partially contribute to higher serum GP73 in patients, and secreted GP73 exerts an extremely weak effect on the proliferation of PBMC ex vivo. PMID:25231014

Wang, Fang; Li, Zhaotao; Li, Leike; Hu, Longbo; Xiao, Jing; Su, Zhong; Peng, Tao



Disminución de las tasas de cáncer de seno relacionada con la reducción del uso de terapias de reemplazo hormonal

La tasa de los casos nuevos de cáncer de seno en los Estados Unidos, la cual disminuyó pronunciadamente en 2003, podría estar relacionada con una disminución nacional del uso de terapias de reemplazo hormonal. Las tasas de incidencia de cáncer de seno ajustadas a la edad en mujeres de los Estados Unidos bajaron un 6.7 por ciento en 2003. Durante este mismo período, las recetas médicas para terapias de reemplazo hormonal bajaron rápidamente.


Su una teoria bilocale dell’interazione tra una particella con spin 1\\/2 e il campo elettromagnetico  

Microsoft Academic Search

\\u000a Riassunto  Si presenta una teoria bilocale per una particella libera con spin 1\\/2 fondata su una semplice generalizzazione lineare dell’equazione\\u000a di Dirac. Si risolve tale equazione introducendo una condizione di quantizzazione della massa e una nuova condizione supplementare\\u000a che sostituisce la eondizione di Yukawa usata in un precedente lavoro. La generalizzazione della teoria è tale che nelle equazioni\\u000a le coordinate del

E. Minardi



Compacti cations des espaces de con guration dans les sch emas de L. Evain (  

E-print Network

Compacti#12;cations des espaces de con#12;guration dans les sch#19;emas de Hilbert L. Evain (evain sch#19;ema de Hilbert. Notre d#19;emarche g#19;en#19;eralise et uni#12;e des constructions classiques Schubert-Semple #18;a toute vari#19;et#19;e lisse par l'utilisation de sch#19;emas de Hilbert [LB] et Keel



E-print Network

??Endocrine Disrupter Compounds (EDCs) like pesticides, alkylphenols and hormones among other classes of compounds are responsible for alterations in the endocrine system functions. Endocrine disruption… (more)

Juliana Scariot Munaretto



CHILES Con Pol: Probing galaxy evolution, the dark Universe, and cosmic magnetism with a deep 1000 hour Jansky VLA survey  

NASA Astrophysics Data System (ADS)

We recently started a 1000 hour campaign to observe 0.2 square degrees of the COSMOS field in full polarization continuum at 1.4 GHz with the Jansky VLA, as part of a joint program with the spectral line COSMOS HI Large Extragalactic Survey (CHILES). When complete, we expect our CHILES Continuum Polarization (CHILES Con Pol) survey to reach an unprecedented SKA-era sensitivity of 0.7 uJy per 4 arcsecond FWHM beam. Here we present the key goals of CHILES Con Pol, which are to (i) produce a source catalog of legacy value to the astronomical community, (ii) measure differential source counts in total intensity, linear polarization, and circular polarization in order to constrain the redshift and luminosity distributions of source populations, (iii) perform a novel weak lensing study using radio polarization as an indicator of intrinsic alignment to better study dark energy and dark matter, and (iv) probe the unknown origin of cosmic magnetism by measuring the strength and structure of intergalactic magnetic fields in the filaments of large scale structure. The CHILES Con Pol source catalog will be a useful resource for upcoming wide-field surveys by acting as a training set for machine learning algorithms, which can then be used to identify and classify radio sources in regions lacking deep multiwavelength coverage.

Hales, Christopher A.; Chiles Con Pol Collaboration



Integrated Concentration in Science (iCons): Undergraduate Education Through Interdisciplinary, Team-Based, Real-World Problem Solving  

NASA Astrophysics Data System (ADS)

Attitude, Skills, Knowledge (ASK) -- In this order, these are fundamental characteristics of scientific innovators. Through first-hand practice in using science to unpack and solve complex real-world problems, students can become self-motivated scientific leaders. This presentation describes the pedagogy of a recently developed interdisciplinary undergraduate science education program at the University of Massachusetts Amherst focused on addressing global challenges with scientific solutions. Integrated Concentration in Science (iCons) is an overarching concentration program that supplements the curricula provided within each student's chosen major. iCons is a platform for students to perform student-led research in interdisciplinary collaborative teams. With a schedule of one course per year over four years, the cohort of students move through case studies, analysis of real-world problems, development of potential solutions, integrative communication, laboratory practice, and capstone research projects. In this presentation, a track emphasizing renewable energy science is used to illustrate the iCons pedagogical methods. This includes discussion of a third-year laboratory course in renewable energy that is educationally scaffolded: beginning with a boot camp in laboratory techniques and culminating with student-designed research projects. Among other objectives, this course emphasizes the practice of using reflection and redesign, as a means of generating better solutions and embedding learning for the long term.

Tuominen, Mark



Desarrollo de la Escala sobre el Estigma Relacionado con el VIH/SIDA para Profesionales de la Salud mediante el uso de métodos mixtos123  

PubMed Central

El estigma relacionado con el VIH/SIDA continúa siendo un obstáculo para la prevención primaria y secundaria del VIH. Las consecuencias para las personas que viven con la enfermedad han sido muy documentadas y continúan siendo una gran preocupación para las personas que proveen servicios de salud y para aquellas que investigan el tema. Estas consecuencias son preocupantes cuando el estigma emana de profesionales de la salud porque se puede limitar el acceso a los servicios. Uno de los principales obstáculos para la investigación del estigma relacionado con el VIH en Puerto Rico es la falta de instrumentos cuantitativos para evaluar las manifestaciones del estigma entre profesionales de la salud. El objetivo principal de este estudio fue desarrollar y probar las propiedades psicométricas de una escala sobre el estigma relacionado con el VIH/SIDA culturalmente apropiada para personas que proveen servicios de salud puertorriqueñas y desarrollar una versión corta de la escala que pudiera usarse en escenarios clínicos con tiempo limitado. El instrumento desarrollado estuvo basado en evidencia cualitativa recopilada entre profesionales y estudiantes de profesiones de la salud puertorriqueños/as (n=80) y administrado a una muestra de 421 profesionales de la salud en adiestramiento. La escala contenía 12 dimensiones del estigma relacionado con el VIH/SIDA. El análisis cuantitativo corroboró 11 de ellas, teniendo como resultado un instrumento con validez y confiabilidad satisfactoria. Estas dimensiones, a su vez, fueron subcomponentes de un factor de estigma general superior. PMID:20333258

Varas-Díaz, Nelson; Neilands, Torsten B.; Guilamo-Ramos, Vincent; Cintrón Bou, Francheska N.



The role of the 2H4 molecule in the generation of suppressor function in Con A-activated T cells.  


The molecular basis for the suppression generated in a concanavalin A (Con A)-activated T cell culture remains unknown. In this study, we have attempted to determine whether the 2H4 and 4B4 molecules on Con A-activated T cells play some role in the generation of suppression by such cells. We have shown that Con A-activated suppressor cells belong to the 2H4+ subset of T cells but not the 4B4+ (2H4-) subset. Con A-activated T cells exerted their optimal suppressor function on day 2 in culture, a time at which the expression of 2H4 on such cells was maximal and 4B4 was minimal. Furthermore, the stimulation of T cells with the higher concentration of Con A generated the stronger suppressor function. At the same time, both 2H4 expression and density were increased and 4B4 expression and density were decreased on such Con A-activated T cells. More importantly, the treatment of Con A-activated T cells with anti-2H4 antibody but not with anti-4B4, anti-TQ1, or anti-T4 antibodies can block the suppressor function of such cells. Taken together, the above results strongly suggest that the 2H4 molecule itself may be involved in the generation of suppressor function in Con A-activated T cells. The 2H4 antigen on such cells was shown to be comprised of 220,000 and 200,000 m.w. glycoproteins. Thus this study indicates that the 220,000 and 200,000 m.w. structure of the 2H4 molecule may itself play a crucial role in the generation of suppressor signals of Con A-activated cells. PMID:2945865

Morimoto, C; Letvin, N L; Rudd, C E; Hagan, M; Takeuchi, T; Schlossman, S F



Fuentes de variabilidad en el diagnóstico de gastritis atrófica multifocal asociada con la infección por Helicobacter pylori1  

PubMed Central

RESUMEN Introducción El mapeo de las diferentes regiones del estómago y el número de fragmentos de mucosa gástrica disponibles para evaluación histopatológica son fuentes importantes de variación en el momento de clasificar y hacer la gradación de la gastritis crónica. Objetivos Estimar la sensibilidad del número de fragmentos de mucosa gástrica necesarios para establecer los diagnósticos de gastritis atrófica con metaplasia intestinal (MI), displasia y estado de infección por Helicobacter pylori. Además evaluar la variabilidad intra-observador en la clasificación de estas lesiones precursoras del cáncer gástrico. Materiales y métodos En una cohorte de 6 años de seguimiento se evaluaron 1,958 procedimientos de endoscopia realizados por dos gastroenterólogos. En cada procedimiento y de cada participante se obtuvieron 5 biopsias de mucosa gástrica que representaban antro, incisura angularis y cuerpo. Un único patólogo hizo la interpretación histológica de las 5 biopsias y proporcionó un diagnóstico definitivo global que se utilizó como patrón de referencia. Cada fragmento de mucosa gástrica examinado condujo a un diagnóstico individual para cada biopsia que se comparó con el patrón de referencia. La variabilidad intra-observador se evaluó en 127 personas que corresponden a una muestra aleatoria de 20% del total de endoscopias hechas a los 72 meses de seguimiento. Resultados La sensibilidad del diagnóstico de MI y displasia gástrica aumentó de manera significativa con el número de fragmentos de mucosa gástrica evaluados El sitio anatómico de mayor sensibilidad para el diagnóstico de MI y displasia fue la incisura angularis. Para descubrir H. pylori se logró alta sensibilidad con el estudio de un solo fragmento de mucosa gástrica (95.9%) y fue independiente del sitio de obtención de la biopsia. El acuerdo intra-observador para el diagnóstico de gastritis crónica fue 86.1% con valor kappa de 0.79 IC 95% (0.76-0.85). Las biopsias fijadas en alcohol fueron inadecuadas para demostrar H. pylori e interpretar los cambios de displasia. Conclusión El número de fragmentos de mucosa gástrica evaluados, el método de fijación y la región del estómago donde se obtienen las biopsias son factores muy importantes para lograr una correcta clasificación de la gastritis crónica atrófica multifocal. PMID:25267864

Bravo, Luis Eduardo; Bravo, Juan Carlos; Realpe, José Luis; Zarama, Guillermo; Piazuelo, MarÍa Blanca; Correa, Pelayo



DIA HORA AULA CURSO TITULACION ASIGNATURA 13/12/2013 9:00 Ningn Matriculado 1 Comn con II+LADE Introduccin a la Programacin  

E-print Network

Matemáticas 16/12/2013 15:00 Seminario 270 Departamental II 2 Común con II+LADE Fundamentos de Redes de+LADE Introducción a la Programación 18/12/2013 9:00 Ningún Matriculado 1 Común con II+LADE Fundamentos de los:00 Ningún Matriculado 1 Común con II+LADE Fundamentos Físicos de la Informática 09/01/2014 18:00 Ningún

Rey Juan Carlos, Universidad


iCons 2 Renewable Energy [NatSci 290IH (2) aka i2e] Spring 2013 Syllabus i2e Faculty Guides  

E-print Network

1 iCons 2 Renewable Energy [NatSci 290IH (2) aka i2e] ­ Spring 2013 Syllabus i2e Faculty Guides Objectives: Students learn to ... in the context of Renewable Energy problems. 1. ... write effectively

Auerbach, Scott M.


hI-con1, a factor VII-IgGFc chimeric protein targeting tissue factor for immunotherapy of uterine serous papillary carcinoma  

Microsoft Academic Search

BACKGROUND:Uterine serous papillary adenocarcinoma (USPC) is a highly aggressive variant of endometrial cancer. Human immuno- conjugate molecule (hI-con1) is an antibody-like molecule targeted against tissue factor (TF), composed of two human Factor VII (fVII) as the targeting domain, fused to human immunoglobulin (Ig) G1 Fc as an effector domain. We evaluated hI-con1 potential activity against primary chemotherapy-resistant USPC cell lines

E Cocco; Z Hu; C E Richter; S Bellone; F Casagrande; M Bellone; P Todeschini; G Krikun; D-A Silasi; M Azodi; P E Schwartz; T J Rutherford; N Buza; S Pecorelli; C J Lockwood; A D Santin



Assessment of Response to Lithium Maintenance Treatment in Bipolar Disorder: A Consortium on Lithium Genetics (ConLiGen) Report  

PubMed Central

Objective The assessment of response to lithium maintenance treatment in bipolar disorder (BD) is complicated by variable length of treatment, unpredictable clinical course, and often inconsistent compliance. Prospective and retrospective methods of assessment of lithium response have been proposed in the literature. In this study we report the key phenotypic measures of the “Retrospective Criteria of Long-Term Treatment Response in Research Subjects with Bipolar Disorder” scale currently used in the Consortium on Lithium Genetics (ConLiGen) study. Materials and Methods Twenty-nine ConLiGen sites took part in a two-stage case-vignette rating procedure to examine inter-rater agreement [Kappa (?)] and reliability [intra-class correlation coefficient (ICC)] of lithium response. Annotated first-round vignettes and rating guidelines were circulated to expert research clinicians for training purposes between the two stages. Further, we analyzed the distributional properties of the treatment response scores available for 1,308 patients using mixture modeling. Results Substantial and moderate agreement was shown across sites in the first and second sets of vignettes (??=?0.66 and ??=?0.54, respectively), without significant improvement from training. However, definition of response using the A score as a quantitative trait and selecting cases with B criteria of 4 or less showed an improvement between the two stages (ICC1?=?0.71 and ICC2?=?0.75, respectively). Mixture modeling of score distribution indicated three subpopulations (full responders, partial responders, non responders). Conclusions We identified two definitions of lithium response, one dichotomous and the other continuous, with moderate to substantial inter-rater agreement and reliability. Accurate phenotypic measurement of lithium response is crucial for the ongoing ConLiGen pharmacogenomic study. PMID:23840348

Manchia, Mirko; Adli, Mazda; Akula, Nirmala; Ardau, Raffaella; Aubry, Jean-Michel; Backlund, Lena; Banzato, Claudio EM.; Baune, Bernhard T.; Bellivier, Frank; Bengesser, Susanne; Biernacka, Joanna M.; Brichant-Petitjean, Clara; Bui, Elise; Calkin, Cynthia V.; Cheng, Andrew Tai Ann; Chillotti, Caterina; Cichon, Sven; Clark, Scott; Czerski, Piotr M.; Dantas, Clarissa; Zompo, Maria Del; DePaulo, J. Raymond; Detera-Wadleigh, Sevilla D.; Etain, Bruno; Falkai, Peter; Frisén, Louise; Frye, Mark A.; Fullerton, Jan; Gard, Sébastien; Garnham, Julie; Goes, Fernando S.; Grof, Paul; Gruber, Oliver; Hashimoto, Ryota; Hauser, Joanna; Heilbronner, Urs; Hoban, Rebecca; Hou, Liping; Jamain, Stéphane; Kahn, Jean-Pierre; Kassem, Layla; Kato, Tadafumi; Kelsoe, John R.; Kittel-Schneider, Sarah; Kliwicki, Sebastian; Kuo, Po-Hsiu; Kusumi, Ichiro; Laje, Gonzalo; Lavebratt, Catharina; Leboyer, Marion; Leckband, Susan G.; López Jaramillo, Carlos A.; Maj, Mario; Malafosse, Alain; Martinsson, Lina; Masui, Takuya; Mitchell, Philip B.; Mondimore, Frank; Monteleone, Palmiero; Nallet, Audrey; Neuner, Maria; Novák, Tomás; O’Donovan, Claire; Ösby, Urban; Ozaki, Norio; Perlis, Roy H.; Pfennig, Andrea; Potash, James B.; Reich-Erkelenz, Daniela; Reif, Andreas; Reininghaus, Eva; Richardson, Sara; Rouleau, Guy A.; Rybakowski, Janusz K.; Schalling, Martin; Schofield, Peter R.; Schubert, Oliver K.; Schweizer, Barbara; Seemüller, Florian; Grigoroiu-Serbanescu, Maria; Severino, Giovanni; Seymour, Lisa R.; Slaney, Claire; Smoller, Jordan W.; Squassina, Alessio; Stamm, Thomas; Steele, Jo; Stopkova, Pavla; Tighe, Sarah K.; Tortorella, Alfonso; Turecki, Gustavo; Wray, Naomi R.; Wright, Adam; Zandi, Peter P.; Zilles, David; Bauer, Michael; Rietschel, Marcella; McMahon, Francis J.



pH-sensitive C-ON bond homolysis of alkoxyamines of imidazoline series: a theoretical study.  


The pH-dependent kinetics of C-ON bond homolysis reactions of the four alkoxyamines (viz., the derivatives of 2-(4-(dimethylamino)-2-ethyl-5,5-dimethyl-2-(pyridin-4-yl)-2,5-dihydro-1H-imidazol-1-oxyl and 2-(2-carboxyethyl)-5,5-diethyl-2,4-dimethyl-2,5-dihydro-1H-imidazol-1-oxyl) in water solution have been scrutinized using DFT calculations (M06-2X/6-311++G(2df,p) level of theory with the PCM model). On the basis of computations, the experimental results obtained before (J. Org. Chem. 2011, 76, 5558) have been rationalized. The concentration dependence of all possible protonated forms of the four alkoxyamines was obtained from pH measurements. The contributions of particular protonated forms into the overall rate constants of thermolysis were estimated using the DFT calculated Gibbs free energies ?(r)?G of C-ON bond homolysis reactions. The computations revealed that the observed rate constants of thermolysis of the two species at several pH values are dominated by decomposition reactions of two or even three protonated forms. The observed trends in reactivity of the alkoxyamines were mainly attributed to destabilization of the radical products of C-ON bond scission reactions. A linear correlation between the sum of radical stabilization energies (RSEs) of products of thermolysis and the calculated Gibbs free energies of reactions was found for various protonated forms of the species studied. Apart from this, the linear correlation exists between the relative RSE and nitrogen hyperfine constants aN of various protonated forms of the nitroxide radical products. PMID:24804900

Parkhomenko, Dmitriy A; Edeleva, Mariya V; Kiselev, Vitaly G; Bagryanskaya, Elena G



CONS-COCOMAPS: a novel tool to measure and visualize the conservation of inter-residue contacts in multiple docking solutions  

PubMed Central

Background The development of accurate protein-protein docking programs is making this kind of simulations an effective tool to predict the 3D structure and the surface of interaction between the molecular partners in macromolecular complexes. However, correctly scoring multiple docking solutions is still an open problem. As a consequence, the accurate and tedious screening of many docking models is usually required in the analysis step. Methods All the programs under CONS-COCOMAPS have been written in python, taking advantage of python libraries such as SciPy and Matplotlib. CONS-COCOMAPS is freely available as a web tool at the URL: Results Here we presented CONS-COCOMAPS, a novel tool to easily measure and visualize the consensus in multiple docking solutions. CONS-COCOMAPS uses the conservation of inter-residue contacts as an estimate of the similarity between different docking solutions. To visualize the conservation, CONS-COCOMAPS uses intermolecular contact maps. Conclusions The application of CONS-COCOMAPS to test-cases taken from recent CAPRI rounds has shown that it is very efficient in highlighting even a very weak consensus that often is biologically meaningful. PMID:22536965



Pros and Cons of Using Arrays of Small Antennas Versus Large Single Dish Antennas for the Deep Space Network  

NASA Technical Reports Server (NTRS)

This paper briefly describes pros and cons of using arrays of small antennas instead of large single dish antennas for spacecraft telemetry, command, and tracking (TT and C) - communications and navigation (C and N) - and science support that the Deep Space Network (DSN) normally provides. It considers functionality and performance aspects, mainly for TT and C, though it also considers science. It only briefly comments on the cost aspects that seem to favor arrays of small antennas over large single antennas, at least for receiving (downlinks).

Bagri, Durgadas S.



Modelo de accesibilidad de conceptos matematicos aplicados en el curso de Astronomia Descriptiva para estudiantes con impedimentos visuales en la UPR  

NASA Astrophysics Data System (ADS)

Este estudio utiliza metodologia de investigacion cualitativa, con el proposito de describir, analizar y evaluar los procesos de diseno y desarrollo de un modelo de accesibilidad que consiste en estrategias de ensenanza de las matematicas para estudiantes con impedimentos visuales matriculados en el curso de Astronomia Descriptiva en la UPR. Se utilizaron las siguientes estrategias para recopilar la informacion, 1) reflexiones de la investigadora en el proceso de diseno y desarrollo de las lecciones adaptadas, que se registraron en un diario reflexivo. 2) entrevista semiestructurada luego de haber trabajado las lecciones de aprendizaje adaptadas con los participantes. 3) observaciones y notas de la investigadora del trabajo de los participantes. Para obtener la informacion de los participantes se obtuvo los permisos institucionales necesarios; se seleccionaron los participantes y se validaron los instrumentos; se realizo el desarrollo de las lecciones adaptadas con los participantes; y finalmente, se analizo la informacion obtenida. El diseno de las lecciones de aprendizaje adaptadas se hizo siguiendo las recomendaciones curriculares de los temas de matematicas aplicados en el curso de Astronomia Descriptiva realizado por la investigadora durante su semestre de internado. El testimonio de las voces de los participantes se obtuvo del proceso de desarrollo de las lecciones de aprendizaje adaptadas de temas seleccionados de conceptos matematicos requeridos en el curso de Astronomia Descriptiva y de la entrevista semiestructurada con los participantes, luego de haber trabajado las lecciones de aprendizaje. Para el desarrollo de las lecciones de aprendizaje, se utilizaron materiales tactiles adaptados, materiales tactiles disenados y materiales disponibles comercialmente. Los textos de las lecciones se imprimieron en tinta y en Braille. Se exhorta a disenar y desarrollar estrategias de ensenanza accesibles, considerando como recursos para evaluar su efectividad a personas con impedimentos visuales. El utilizar estrategias de aprendizaje accesibles de acuerdo a las necesidades individuales de los estudiantes, contribuye para que los estudiantes con impedimentos visuales descubran, exploren, investiguen y formulen sus propias conclusiones durante su proceso de aprendizaje.

Isidro Villamizar, Gloria Maria


The influence of aluminum phosphates on graphite oxidation  

Microsoft Academic Search

Aluminum phosphates are of interest for use as inhibitors for the oxidation of carbonaceous materials. This investigation analyzes three aluminum phosphates of nominal compositions, Al2O3·P2O5, Al2O3·3P2O5, and Al2O3·9P2O5, in terms of thermal stability and efficacy to inhibit the thermal oxidation of graphite flake in pure oxygen. Temperature programmed oxidation reveals that the onset temperature for oxidation is increased by 75–100°C

Christopher R. Maier; Linda E. Jones



Über den Phosphatidgehalt von Kakaopulver und Kakaofett und zur Frage der Bestimmung eines Zusatzes von Lecithin zu Kakaowaren  

Microsoft Academic Search

Zusammenfassung 1.Der Phosphatidgehalt im alkoholischen Auszug von 6 verschiedenen Kakaopulvern ohne Lecithinzusatz lag zwischen 0,389 und 0,980% (berechnet als Lecithin: P2O5×11,32 und bezogen auf die fettfreie Trockensubstanz). Bei 2 präparierten Kakaopulvern betrug der Phosphatidgehalt 0,389 und 0,552%; die Verhältniszahl des alkohollöslichen P2O5 zum Gesamt-P2O5 war 1:63,6 und 1:44,6. Bei den anderen 4 Kakaopulvern, von denen 2 als unpräpariert bezeichnet waren,

K. Braunsdorf




NASA Astrophysics Data System (ADS)

In this paper, the effect of the flood hazard map distributed to the residents who experienced flood disasters recently and an effective method for improving consciousness of flood di saster prevention are discussed. The questionnaire surveys were conducted on the residents living in the middle basin of the Nishiki River, Iwakuni city, Yamaguchi Prefecture, before and after the distribution of the hazard map. It is found from this investigation that "knowledge", "att achment", and "crisis", are the main factors in the psychological process related to the flood prevention behavior. The effect of the distribution of the hazard map is judged from the probability of the flood prevention behavior. In addition, it is also found that "knowledge", "flood experiment of T0514", "crisis", "eff ectiveness", "load", and "easy reading of the hazard map", are keys to improve the cons ciousness of flood di saster prevention.

Asai, Koji; Koga, Syota; Sakakibara, Hiroyuki


Intraspecific alkaloid variation in ladybird eggs and its effects on con- and hetero-specific intraguild predators.  


Egg predation and cannibalism are common phenomena in predatory ladybirds despite the presence of defensive alkaloids. Consumption of heterospecific eggs negatively affects survivorship and development; however, intraspecific variation in quantities of alkaloids and post-ingestion responses to con- and hetero-specific alkaloids, are not well understood. We examined variation in the quantity of alkaloids in eggs of Harmonia axyridis (Pallas), Coccinella septempunctata L., and Hippodamia convergens (Guérin) using gas chromatography-mass spectrometry, and show a link between heterospecific alkaloids and their toxicity and/or costs by feeding high and low alkaloid eggs to first instar H. axyridis and C. septempunctata. The repeatability of alkaloid measurements in eggs in an egg cluster was high; however, the amount of alkaloids varied significantly between egg clutches within and among females. This variation affected egg consumption by C. septempunctata when fed H. axyridis eggs. Harmonia axyridis accumulated their own alkaloid by cannibalism and synthesized it de novo, but C. septempunctata lost some portion of the consumed conspecific alkaloids. Both species lost most of the consumed heterospecific alkaloids, but C. septempunctata died within 3 days. Most H. axyridis survived to the second instar, but C. septempunctata alkaloids led to a significant reduction in weight gain compared to an aphid control. In addition, ingestion of high alkaloid C. septempunctata extended development of H. axyridis compared to the aphid control or conspecific eggs. Harmonia axyridis had greater abilities to process ingested con- and hetero-specific alkaloids compared with C. septempunctata, which may, in part, explain their interspecific interactions in nature. PMID:20049478

Kajita, Yukie; Obrycki, J J; Sloggett, J J; Haynes, K F



Inversor Resonante de Tres Elementos L-LC con Caracteristica Cortocircuitable para Aplicaciones de Calentamiento por Induccion  

NASA Astrophysics Data System (ADS)

Los generadores de calentamiento por induccion son puentes inversores con carga resonante, cuya mision es basicamente crear una corriente sinusoidal de gran amplitud sobre la "bobina de caldeo", que forma parte del tanque resonante. En el interior de esta bobina se introduce la pieza que se desea calentar. EI campo magnetico creado induce corrientes superficiales (corrientes de Foucault) sobre la pieza, que producen su calentamiento. Los tanques resonantes (tambien llamados osciladores) utilizados en la actualidad son el resonante serie y el resonante paralelo. Aunque ya desde hace algun tiempo se vienen construyendo generadores de alta potencia basados en estos dos osciladores, el exito nunca ha. sido completo en ninguno de los dos casos. Tal y como se explica en la introduccion de esta memoria, los puentes inversores utilizados deben operar sobre una carga inductiva (corriente retrasada) para evitar el fenomeno de la recuperacion inversa de sus diodos y la consiguiente ruptura de los transistores. De la restriccion topologica anterior se deduce que el generador paralelo debe conmutar a frecuencias inferiores a la resonancia, y el serie a frecuencias superiores. A esta restriccion topologica hay que unir otra que es exclusiva del calentamiento por induccion: La corriente por la bobina de caldeo debe ser sinusoidal. De no ser asi, resultaria imposible disponer toda la potencia de calentamiento sobre la pieza en el espesor requerido por la aplicacion. Como consecuencia, los inversores no pueden operar por debajo de la frecuencia de resonancia del oscilador, pues en ese caso se amplifican los armonicos de orden superior de la tension/corriente de entrada situados sobre la resonancia, con la consiguiente distorsion de la corriente de salida. La conjuncion de las dos restricciones anteriores obligan al inversor paralelo a funcionar a la frecuencia de resonancia del oscilador. Esto imposibilita un control por variacion de frecuencia, regulandose la potencia desde la seccion de entrada mediante un mayor o menor aporte de corriente al puente. Como consecuencia, la seccion de entrada del paralelo, ya de por si mas voluminosa que lao del serie por el uso de grandes componentes magneticos (bobinas de filtro o de "alisamiento"), result a tambien mas complicada y costosa debido a la necesidad de ser implementada mediante rectificador controlado. Ademas, la regulacion que ofrece el rectificador es pobre, dada su baja frecuencia de conmutacion. En cambio, el circuito serie puede funcionar por encima de la resonancia manteniendo una secuencia de conmutacion sin riesgos de recuperacion inversa y con una corriente de salida practicamente sinusoidal, lo que permite un control de la potencia por variacion de frecuencia. Puesto que la tarea de regulacion se realiza desde el puente inversor, la regulacion resulta mucho mas eficaz y la seccion de entrada se puede implementar mediante un simple rectificador no controlado y un condensador de filtro. (Abstract shortened by UMI.).

Espi Huerta, Jose Miguel



E-print Network

in areas of control and embedded systems that weaves critical aspects of control systems design with real-timeAC 2011-376: WIRELESS-INTEGRATED EMBEDDED REAL-TIME CON- TROL: A CASE STUDY IN ADOPTING RESOURCES of Engineering. cAmerican Society for Engineering Education, 2011 #12;Wireless-Integrated Embedded Real-Time



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INTERNATIONAL SERIES IN PURE AND APPLIED PHYSICS LEO N A R D 1. S CHI F F, CON S U L TIN G E D ITO of Gases Read Dislocations in Crystals Richtmyer, Kennard, and Lauritsen Introduction to Modern Physics Quantum Theory of Matter Slater Quantum Theory of Atomic Structure, Vol. I Slater Quantum Theory of Atomic

Allen, Jont


IEEE TRANSACTIONS ON AUTOMATIC CONTROL, VOL. 57, NO. 10, OCTOBER 2012 2633 [10] G. Tao, X. Ma, and Y. Ling, "Optimal and nonlinear decoupling con-  

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. Cha Abstract--A limitation of the original gain-scheduling approaches is that the closed. Huang, "Adaptive wavelet neural network con- trol with hysteresis estimation for piezo-positioning mechanism," IEEE Trans. Neural Netw., vol. 17, no. 2, pp. 432­444, 2006. Simplified Rapid Switching Gain

Rotkowitz, Michael C.


CITRIS Workshop on Power Engineering and the Smart Grid The November 22, 2013 CITRIS Workshop on Power Engineering and the Smart Grid con-  

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Report CITRIS Workshop on Power Engineering and the Smart Grid The November 22, 2013 CITRIS Workshop on Power Engineering and the Smart Grid con- sidered the intellectual content of, and some first multidisciplinary. 1 #12;· As automatic control mechanisms become more fundamental to grid operation, security

Yoo, S. J. Ben


Determinación de la aptitud de uso del suelo para producción de cultivos con fines bioenergéticos en la provincia de Salta (Noroeste Argentino)  

Microsoft Academic Search

RESUMEN El presente trabajo presenta los resultados alcanzados en la determinación de la aptitud de uso del suelo para producción de cultivos con fines bioenergéticos en la provincia de Salta (Argentina). Para este propósito se buscó aunar los criterios de sustentabilidad social, económica, energética y ambiental que definen el desarrollo sostenible de los sistemas bioenergéticos. El objetivo principal del trabajo

Renée Alicia Anschau; María Cad; Stella Carballo; Noelia Flores



Kurt J. Koester To obtain a position that allows me to use my skills and knowledge in materials science to con-  

E-print Network

in materials science to con- duct research and develop new products and technologies. EDUCATION: 2003-2007 University of California, Berkeley Berkeley, CA Doctor of Philosophy, Engineering, Materials Science and Engineering Minors: Bioengineering and Business Administration Master of Engineering, Materials Science

Ritchie, Robert


La Meccanica Quantistica e una teoria completa? e quale relazione ha con la Teoria della Relativita? certo sono di#cilmente compatibili come testimoniano i  

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Prefazione La Meccanica Quantistica â??e una teoria completa? e quale relazione ha con la Teoria alternativi di fonderle e il grandioso tentativo in atto di formulare una teoria delle stringhe. Questi sono Quantica: non tocca la teoria quantistica dei campi che ha raggiunto il massimo sviluppo dopo gli anni '30

Roma "La Sapienza", Università di


Actividades en el mbito de la internacionalizacin y de la movilidad universitaria Continuando con el propsito de fortalecer el grado de internacionalidad de la UIB y de  

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Actividades en el ámbito de la internacionalización y de la movilidad universitaria Continuando con programas de movilidad de estudiantes existentes como a iniciar nuevos, al mismo tiempo que se han puesto en marcha las correspondientes convocatorias de movilidad para profesores y personal de administración y

Oro, Daniel


Tutores/as Acadmicos/as de Movilidad El Vicedecanato de Relaciones Internacionales y Movilidad (VRIM) cuenta con una red de tutores/as de movilidad  

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Tutores/as Académicos/as de Movilidad El Vicedecanato de Relaciones Internacionales y Movilidad (VRIM) cuenta con una red de tutores/as de movilidad cuyas funciones son: Asesorar a los/as estudiantes (tanto propios como acogidos) en la elección de asignaturas que cursarán durante su periodo de movilidad

Escolano, Francisco


AbstractThe Kern River Gas Transmission pipeline was con-structed in 1991 to supply natural gas to be used in the thermally  

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94 Abstract­The Kern River Gas Transmission pipeline was con- structed in 1991 to supply natural plants were found in the 11 seeded plots. The Kern River Gas Transmission pipeline (KRGT) was constructed California. The pipeline route extended from a point near Opal, Wyoming, through Utah and Nevada to Daggett


Transformacin del campus para el desarrollo de un modelo social integral y su interaccin con el entorno territorial Tabla I. Descripcin de las actuaciones del proyecto  

E-print Network

, promociones entre los estudiantes y presencia activa en los actos de graduación, newsletters, redes sociales yTransformación del campus para el desarrollo de un modelo social integral y su interacción con el colectivo de referencia en los ámbitos de ciencias sociales, de la comunicación y de la biomedicina

Geffner, Hector


proceedings: Conscmation. Restoraton. and Management ol Tonoises and Tunles-An Intemauonal ConJerence, pp. 383-391 @ 1987 by thc New York Tunlc and Tonorse Society  

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Turtle Nesting Areas for Protection and Management fucHeno R. BugcH,l Lnwu-e G. HetsoN,2 AND Menr DRact: The wood turtle, Clemmys insculpta,is a long-lived, semi-aquatic, riverine species that inhabits forcsted list the wood turtle as "Endangered" or "Threatenedr" and it is now listed on Appendix tr of the Con


Synthesis of water-soluble Ag?Se QDs as a novel resonance Rayleigh scattering sensor for highly sensitive and selective ConA detection.  


Ag2Se quantum dots (QDs) have attracted a lot of interest due to their potential applications in biosensing and bioimaging. A strategy is presented that involves coupling of selenium powder reduction with the binding of silver ions, and thioglycollic acid (TGA) and glycine as stabilizers to obtain ultrasmall Ag2Se QDs at 85 °C in aqueous solution. This strategy avoids high temperatures, high pressures and organic solvents so that water-soluble 3 nm Ag2Se QDs can be directly obtained. The conjugation of ConA to TGA stabilized Ag2Se QDs by hydrogen bonds leads to the adsorption of ConA to Ag2Se QDs and forms the aggregation and leads to the generation of resonance Rayleigh scattering (RRS) as a readout signal for the sensing events. The reaction mechanism of Ag2Se QD RRS enhancement is studied in this work. The resulting RRS sensor enables the detection of ConA with limit of detection reaching 0.08 ?g mL(-1) concentration in a wide linear range from 0.27 ?g mL(-1) to 35 ?g mL(-1). The recovery of spiked ConA in human serum samples ranges from 94% to 106%. The relative standard deviation (RSD) for eleven replicate detections is 3.6%. Our results correlate many important experimental observations and will fuel the further growth of this field. PMID:24957549

Yan, Shuguang; Zhang, Lichun; Tang, Yurong; Lv, Yi



""This talk explains how the con uence of cloud computing and Massive OpenOnline Courses (MOOCs) have allowed us greatly  

E-print Network

""This talk explains how the con uence of cloud computing and Massive OpenOnline Courses (MOOCs explains how the confluence of cloud computing and Massive Open Online Courses (MOOCs) have allowed us software engineering course. Colloquium and Distinguished LECTURE SERIES Myths About MOOCs and Software

Zhou, Yuanyuan


474 The american biology Teacher volume 73, no. 8, ocTober 2011 The accumulation of plastic in the oceans is an ever-growing environmental con-  

E-print Network

of plastic in the oceans is an ever-growing environmental con- cern. Plastic debris is a choking debris. Key Words: Ocean pollution; toxicology; ecosystem health; ocean literacy; envi- ronmental science of plastic pollution. They can be modified to be appro- priate for grades 6­10. Oikonos Ecosystem Knowledge

Schladow, S. Geoffrey


AVISO EN CONTRA DE ACTOS DISCRIMINATORIOS De conformidad con la Ley de Derechos Humanos del Distrito de Columbia (D.C.) de 1977, segn enmendada,  

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AVISO EN CONTRA DE ACTOS DISCRIMINATORIOS De conformidad con la Ley de Derechos Humanos del a medidas disciplinarias. La Ley de Derechos Humanos del Distrito de Columbia (D.C.), Sección 2-1402.31(a discriminar: "Negarle a una persona, de forma directa o indirecta, el derecho a disfrutar a plenitud y

Weaver, Harold A. "Hal"


Departamento de Disciplinas Econmicas y Financieras El Departamento de Disciplinas Econmicas y Financieras, con sede en la Facultad de Derecho de la Universidad  

E-print Network

Financieras, con sede en la Facultad de Derecho de la Universidad de Alicante, está compuesto por el área de conocimiento de Derecho Financiero y Tributario que centra su actividad en las facultades de Derecho, Ciencias: Estudios de 1er y 2º Ciclo (a extinguir) Licenciatura en Derecho. Licenciatura Derecho-ADE (DADE

Escolano, Francisco


Page 296 Courses: Economics (ECON) Sonoma State University 2013-2014 Catalog eCon 317 introduCtion to eConoMetriCS (4)  

E-print Network

-sectional techniques, time series analysis, simultaneous equation modeling, and forecasting. Applying widely, or equivalents or consent of instructor. eCon 319 MAnAgeriAL eConoMiCS (4) Economic analysis applied the content and applicability of such basic economic concepts as marginality, opportunity costs, and market

Ravikumar, B.


To be presented at the Fourth International Workshop on Virtual Rehabilitation, Catalina Island, CA, September 2005. Usability of the Remote Console (ReCon) for Virtual Reality  

E-print Network

, September 2005. Usability of the Remote Console (ReCon) for Virtual Reality Telerehabilitation: Formative. Keywords virtual reality, telerehabilitation, physical therapy, formative evaluation, usability engineering for virtual reality telerehabilitation from a host site to a clinic or a home using real-time patient

New Jersey, University of Medicine and Dentistry of


arXiv:submit/0083985[cond-mat.supr-con]29Jul2010 Metastability in a nano-bridge based hysteretic DC-SQUID embedded in  

E-print Network

arXiv:submit/0083985[cond-mat.supr-con]29Jul2010 Metastability in a nano-bridge based hysteretic DC-SQUID study the metastable response of a highly hysteretic DC-SQUID made of a Niobium loop interrupted by two nano-bridges. We excite the SQUID with an alternating current and with direct magnetic flux, and find

Buks, Eyal


ConSoil 2005 -Abstract form Title of abstract Alcohol Flushing: Parameter Estimation for a cost efficient in-situ remediation  

E-print Network

alcohols from the aquifer. The removed mixture has to be sent to a treatment plant in order to separateConSoil 2005 - Abstract form Title of abstract Alcohol Flushing: Parameter Estimation for a Phone +49 - 711 / 685 4602 Fax +49 - 711 / 685 7020 Topics: Alcohol flushing, in-situ remediation

Cirpka, Olaf Arie


Accordo con QdG Teatro Leonardo Soc. Consortile a r.l. Stagione Teatrale 2013/2014  

E-print Network

, l'accesso al Teatro Leonardo Da Vinci per gli studenti universitari(2) con tesserino universitario e definire a cura di Teatro Leonardo da Vinci, estensibili ad uno o più accompagnatori se indicato. Per tutte dello "Studio U.r.p. "(3). (1) Storia e Informazioni su Teatro Leonardo da Vinci

De Cindio, Fiorella


40 CFR 60.241 - Definitions.  

Code of Federal Regulations, 2012 CFR

...or equivalent or alternative methods. (c) Equivalent P 2 O5 stored means the quantity of phosphorus, expressed as phosphorus pentoxide, being cured or stored in the affected facility. (d) Fresh granular triple...



40 CFR 60.211 - Definitions.  

Code of Federal Regulations, 2011 CFR

...STATIONARY SOURCES Standards of Performance for the Phosphate Fertilizer Industry: Superphosphoric Acid Plants § 60.211 Definitions...P2 O5 content by weight for eventual consumption as a fertilizer. (b) Total fluorides means elemental fluorine...



40 CFR 60.211 - Definitions.  

Code of Federal Regulations, 2012 CFR

...STATIONARY SOURCES Standards of Performance for the Phosphate Fertilizer Industry: Superphosphoric Acid Plants § 60.211 Definitions...P2 O5 content by weight for eventual consumption as a fertilizer. (b) Total fluorides means elemental fluorine...



40 CFR 60.211 - Definitions.  

Code of Federal Regulations, 2014 CFR

...STATIONARY SOURCES Standards of Performance for the Phosphate Fertilizer Industry: Superphosphoric Acid Plants § 60.211 Definitions...P2 O5 content by weight for eventual consumption as a fertilizer. (b) Total fluorides means elemental fluorine...



40 CFR 60.211 - Definitions.  

Code of Federal Regulations, 2013 CFR

...STATIONARY SOURCES Standards of Performance for the Phosphate Fertilizer Industry: Superphosphoric Acid Plants § 60.211 Definitions...P2 O5 content by weight for eventual consumption as a fertilizer. (b) Total fluorides means elemental fluorine...



Analysis of cancer risk and BRCA1 and BRCA2 mutation prevalence in the kConFab familial breast cancer resource  

PubMed Central

Introduction The Kathleen Cuningham Foundation Consortium for Research into Familial Breast Cancer (kConFab) is a multidisciplinary, collaborative framework for the investigation of familial breast cancer. Based in Australia, the primary aim of kConFab is to facilitate high-quality research by amassing a large and comprehensive resource of epidemiological and clinical data with biospecimens from individuals at high risk of breast and/or ovarian cancer, and from their close relatives. Methods Epidemiological, family history and lifestyle data, as well as biospecimens, are collected from multiple-case breast cancer families ascertained through family cancer clinics in Australia and New Zealand. We used the Tyrer-Cuzick algorithms to assess the prospective risk of breast cancer in women in the kConFab cohort who were unaffected with breast cancer at the time of enrolment in the study. Results Of kConFab's first 822 families, 518 families had multiple cases of female breast cancer alone, 239 had cases of female breast and ovarian cancer, 37 had cases of female and male breast cancer, and 14 had both ovarian cancer as well as male and female breast cancer. Data are currently held for 11,422 people and germline DNAs for 7,389. Among the 812 families with at least one germline sample collected, the mean number of germline DNA samples collected per family is nine. Of the 747 families that have undergone some form of mutation screening, 229 (31%) carry a pathogenic or splice-site mutation in BRCA1 or BRCA2. Germline DNAs and data are stored from 773 proven carriers of BRCA1 or BRCA1 mutations. kConFab's fresh tissue bank includes 253 specimens of breast or ovarian tissue – both normal and malignant – including 126 from carriers of BRCA1 or BRCA2 mutations. Conclusion These kConFab resources are available to researchers anywhere in the world, who may apply to kConFab for biospecimens and data for use in ethically approved, peer-reviewed projects. A high calculated risk from the Tyrer-Cuzick algorithms correlated closely with the subsequent occurrence of breast cancer in BRCA1 and BRCA2 mutation positive families, but this was less evident in families in which no pathogenic BRCA1 or BRCA2 mutation has been detected. PMID:16507150

Mann, Graham J; Thorne, Heather; Balleine, Rosemary L; Butow, Phyllis N; Clarke, Christine L; Edkins, Edward; Evans, Gerda M; Fereday, Sián; Haan, Eric; Gattas, Michael; Giles, Graham G; Goldblatt, Jack; Hopper, John L; Kirk, Judy; Leary, Jennifer A; Lindeman, Geoffrey; Niedermayr, Eveline; Phillips, Kelly-Anne; Picken, Sandra; Pupo, Gulietta M; Saunders, Christobel; Scott, Clare L; Spurdle, Amanda B; Suthers, Graeme; Tucker, Kathy; Chenevix-Trench, Georgia



Status and Progress of a Fault Current Limiting Hts Cable to BE Installed in the con EDISON Grid  

NASA Astrophysics Data System (ADS)

In the last decade, significant advances in the performance of second generation (2G) high temperature superconducting wire have made it suitable for commercially viable applications such as electric power cables and fault current limiters. Currently, the U.S. Department of Homeland Security is co-funding the design, development and demonstration of an inherently fault current limiting HTS cable under the Hydra project with American Superconductor and Consolidated Edison. The cable will be approximately 300 m long and is being designed to carry 96 MVA at a distribution level voltage of 13.8 kV. The underground cable will be installed and energized in New York City. The project is led by American Superconductor teamed with Con Edison, Ultera (Southwire and nkt cables joint venture), and Air Liquide. This paper describes the general goals, design criteria, status and progress of the project. Fault current limiting has already been demonstrated in 3 m prototype cables, and test results on a 25 m three-phase cable will be presented. An overview of the concept of a fault current limiting cable and the system advantages of this unique type of cable will be described.

Maguire, J.; Folts, D.; Yuan, J.; Henderson, N.; Lindsay, D.; Knoll, D.; Rey, C.; Duckworth, R.; Gouge, M.; Wolff, Z.; Kurtz, S.



Air Traffic Management Technology Demonstration-1 Concept of Operations (ATD-1 ConOps), Version 2.0  

NASA Technical Reports Server (NTRS)

This document is an update to the operations and procedures envisioned for NASA s Air Traffic Management (ATM) Technology Demonstration #1 (ATD-1). The ATD-1 Concept of Operations (ConOps) integrates three NASA technologies to achieve high throughput, fuel-efficient arrival operations into busy terminal airspace. They are Traffic Management Advisor with Terminal Metering (TMA-TM) for precise time-based schedules to the runway and points within the terminal area, Controller-Managed Spacing (CMS) decision support tools for terminal controllers to better manage aircraft delay using speed control, and Flight deck Interval Management (FIM) avionics and flight crew procedures to conduct airborne spacing operations. The ATD-1 concept provides de-conflicted and efficient operations of multiple arrival streams of aircraft, passing through multiple merge points, from top-of-descent (TOD) to the Final Approach Fix. These arrival streams are Optimized Profile Descents (OPDs) from en route altitude to the runway, using primarily speed control to maintain separation and schedule. The ATD-1 project is currently addressing the challenges of integrating the three technologies, and their implantation into an operational environment. The ATD-1 goals include increasing the throughput of high-density airports, reducing controller workload, increasing efficiency of arrival operations and the frequency of trajectory-based operations, and promoting aircraft ADS-B equipage.

Baxley, Brian T.; Johnson, William C.; Swenson, Harry N.; Robinson, John E.; Prevot, Tom; Callantine, Todd J.; Scardina, John; Greene, Michael



Models of basalt petrogenesis: Lower Keweenawan diabase dikes and middle Keweenawan Portage Lake Lavas, upper Michigan  

Microsoft Academic Search

Lower Keweenawan diabase dikes from Marquette-Baraga Counties, and middle Keweenawan Portage Lake Lavas from upper Michigan, can each be subdivided into two chemically distinct groups: a low TiO2-P2O5 group characterized by higher A12O3 content, higher Mg ratio, and lower total Fe and REE abundances than a high TiO2-P2O5 group. Both groups, which are indistinguishable in the field, are enriched in

John T. Wilband; Pipob Wasuwanich



Influence on the film properties of torch inclination angle in the FHD process  

NASA Astrophysics Data System (ADS)

The refractive index and the film thickness were measured by the prism coupler, and GeO2 and P2O5 concentration were analyzed by EPMA (Electron Probe Micro Analysis) according to the torch inclination angle and the distance between torch and substrate. As the torch angle was steeper, the thickness and the GeO2 concentration were increased, and the P2O5 concentration was decreased for the angle greater than 45 degree

Seo, Yong-Gon; Shin, Sang-Hee; Kwon, Oh-Duk; Lee, Byung-Moon; Kim, Yong-Tak; Yoon, Dae-Ho; Yoon, Hyung-Do; Kim, Je-Min; Im, Young-Min



The Classics, Con Brio  

ERIC Educational Resources Information Center

Sponsored by a consortium of 30 American universities, Rome's Intercollegiate Center for Classical Studies offers a year of study to American undergraduate classics majors. Instructors are also American and normally stay only a year; teaching assistants are always ex-students of the center. Extensive field trips are an important part of the…

Hansen, James




The authors also gratefully acknowledge the copy editing assistance of Leslie Alter, MPH and Steve Brown. The Ethical Force Program’s initiative on patient-centered communication is funded in part by the American Medical Association Foundation, The California Endowment, the Commonwealth Fund and the Connecticut Health Foundation.


Neo-Conned University  

ERIC Educational Resources Information Center

Censorship, says Australian political theorist John Keane (1991), can "echo within us, take up residence within ourselves, spying on us, a private amanuensis who reminds us never to go too far... It makes us zip our lips, tremble and think twice" (p. 39). It can also make us sick. The author states that this is her argument here: that,…

Jones, Andee



urban ConAgraculture  

Microsoft Academic Search

Current pressures in today’s world caused me to investigate strategies of change in the organization of society to promote a more effi cient existence. Globalization, a movement characterized by the dissemination of economies, ethnicities, media, ideas, technologies, and production; has become today’s reality. The shift from imperialism to globalism has caused a decline in the power and importance of nation

Dale J Luebbert



Verde Sport S.p.A. con il patrocinio di Assicurazioni Generali e il sostegno di Telecom Italia, bandisce un concorso per il conferimento di 6 premi del valore di 1.000 euro ciascuno a favore di laureati in  

E-print Network

e sport (; Impiantistica sportiva (; Doping sportivo, sia comeBIBLIOTECA STEFANO BENETTON Verde Sport S.p.A. con il patrocinio di Assicurazioni Generali e il ciascuno a favore di laureati in Università italiane con tesi su temi riguardanti lo sport o la

Guidoni, Leonardo


Esplorazione Della Terra Incognita Della Fisica Nucleare: Nuclei Con Alone, Nuclei "A Grappoli", Nuclei Borromeani e Altre Stranezze Esotiche!  

E-print Network

English: If the current status of theoretical and experimental knowledge in Nuclear Physics could be reduced to a geographical chart or a planisphere, then our epoch would be in some respect comparable to the end of the Medieval age and in other to the beginning of the Reinassance: epochs in which, together with the consolidated knowledge of the Old World, there have been great and revolutionary expeditions as the discovery of America or the periplus of Cape of Good Hope, explorations aimed at reaching the limits that, along the centuries, have lead to more and more engaging scientific discoveries in more and more far away lands, ending only in the twentieth century with the complete mapping of all the continents. Nuclear Physics is living an analogous adventure on the plane of contrast... - Italian: Se lo stato attuale delle conoscenze teoriche e sperimentali della Fisica Nucleare si potesse ridurre a una carta geografica o un mappamondo, allora la nostra epoca si potrebbe paragonare per certi versi alla fine del Medioevo e per altri al Rinascimento: epoche in cui, accanto alla conoscenza consolidata del Vecchio mondo, ci furono grandi e rivoluzionarie spedizioni come la scoperta dell'America o il periplo del Capo di Buona Speranza, esplorazioni geografiche volte al raggiungimento dei limiti che, nel corso dei secoli, hanno portato a scoperte scientifiche sempre pi\\`u avvincenti in terre sempre pi\\`u lontane, culminate solo nel ventesimo secolo con la completa mappatura di tutte le terre emerse. La Fisica Nucleare sta vivendo un'avventura analoga sul piano della contrapposizione tra la conoscenza acquisita sui nuclei stabili e la scoperta delle sorprendenti propriet\\`a esotiche dei nuclei instabili, pi\\`u difficili da produrre, da studiare e da comprendere.

Lorenzo Fortunato



An inevitable wave of prescription drug monitoring programs in the context of prescription opioids: pros, cons and tensions  

PubMed Central

Background In an effort to control non-medical use and/or medical abuse of prescription drugs, particularly prescription opioids, electronic prescription drug monitoring programs (PDMP) have been introduced in North-American countries, Australia and some parts of Europe. Paradoxically, there are simultaneous pressures to increase opioid prescribing for the benefit of individual patients and to reduce it for the sake of public health, and this pressure warrants a delicate balance of appropriate therapeutic uses of these drugs with the risk of developing dependence. This article discusses pros and cons of PDMP in reducing diversion of prescription opioids, without hampering access to those medications for those with genuine needs, and highlights tensions around PDMP implementation. Discussion PDMPs may help alleviate diversion, over-prescription and fraudulent prescribing/dispensing; prompt drug treatment referrals; avoid awkward drug urine test; and inform spatial changes in prescribing practices and help designing tailored interventions. Fear of legal retribution, privacy and data security, potential confusion about addiction and pseudo-addiction, and potential undue pressure of detecting misuse/diversion - are the major problems. There are tensions about unintended consequence of excessive regulatory enforcements, corresponding collateral damages particularly about inadequate prescribing for patients with genuine needs, and mandatory consultation requirements of PDMP. Summary In this era of information technology PDMP is likely to flourish and remain with us for a long time. A clear standard of practice against which physicians’ care will be judged may expedite the utilisation of PDMP. In addition, adequate training on addiction and pain management along with public awareness, point-of-supply data entry from pharmacy, point-of-care real-time access to data, increasing access to addiction treatment and appropriate regulatory enforcement preferably through healthcare administration, together, may help remove barriers to PDMP use. PMID:25127880



reThiNKiNG The BoUNdaries The dUKe MBa--CroSS ConTInenT  

E-print Network

reThiNKiNG The BoUNdaries The dUKe MBa--CroSS ConTInenT #12;develoP GloBal iNsiGhT The duke MBa--cross continent program is designed to help full-time working professionals earn a world- class MBa while building, The duke MBa-- cross continent program builds more than global awareness; it provides the necessary real

Dolbow, John


1.0 What is Statistics? 1.1 What is Mathematical Statistics? Random Data Basic Ideas in Statistics 1.2 Fundamental Con Mathematical Statistics  

E-print Network

§1.0 What is Statistics? §1.1 What is Mathematical Statistics? Random Data Basic Ideas in Statistics §1.2 Fundamental Con Mathematical Statistics Zhang, Lixin and Dai, Jialing Course Website: #12;§1.0 What is Statistics? §1.1 What is Mathematical Statistics? Random Data Basic Ideas

Zhang, Li-Xin


Guided ion beam studies of the reactions of Con+ (n=1-18) with N2: Cobalt cluster mononitride and dinitride bond energies  

NASA Astrophysics Data System (ADS)

The reactions of Con+ (n=1-18) with N2 are measured as a function of kinetic energy over a range of 0-15eV in a guided ion beam tandem mass spectrometer. A variety of Com+, ComN+, and ComN2+ (m?n) product ions are observed, all in endothermic processes, with collision-induced dissociation dominating the products for all clusters. Bond dissociation energies for both cobalt cluster nitrides and dinitrides are derived from threshold analysis of the energy dependence of the endothermic reactions using several different approaches. These values show only a mild dependence on cluster size over the range studied, although the Co13+-N bond energy is relatively weak. The bond energies of Con+-N for larger clusters suggest that a reasonable value for the desorption energy of atomic nitrogen from bulk phase cobalt is 6.3±0.2eV, which is somewhat lower than the only available value in the literature, an estimate based on the enthalpy of formation of bulk cobalt nitride. The trends in the cobalt nitride thermochemistry are also compared to previously determined metal-metal bond energies, D0(Con+-Co), and to D0(Fen+-N). Implications for catalytic ammonia production using cobalt versus iron are discussed.

Liu, Fuyi; Li, Ming; Tan, Lin; Armentrout, P. B.



Frequency and activity of autorosette forming cells in Con-A activated PBL from women with hyperplasia or carcinoma of the endometrium--possible role of estrogens.  


In a previous study we showed that endometrial carcinoma (EC) patients have a T cell deficiency manifested in a reduced ability to be stimulated in vitro by PHA and to produce IL-2. In an attempt to understand the mechanism responsible for this alteration we present in this paper a study on T cells characterized by the ability to form rosettes, with human erythrocytes, following Con-A activation (designated auto-rosette forming cells--ARFC). These cells are also known to manifest suppressive activity. We show that the frequency of ARFC in con-A activated peripheral blood leukocytes (PBMC) of EC patients is significantly (2-5 fold) higher than that of healthy age-matched controls or that of patients with stage--I colon or vaginal cancer. Endometrial carcinoma is known to be associated with long term exposure to estrogens unopposed by progestins. Examining the possible role of estrogens in increasing the frequency of ARFC from EC patients, we found that in vitro addition of estradiol to Con-A stimulated PBMC from healthy donors increased the frequency of ARFC to levels found in EC patients. Tamoxifen, an anti estrogen drug, reduced the frequency of the estrogen stimulated ARFC to the original low level. Our results suggest a dual role for estrogen in carcinogenesis as well as in immunomodulation. PMID:1967003

Yron, I; Kalechman, Y; Langer, A; Lidor, I; Luria, B; Luria, H; Ovadia, J; Pardo, Y; Shohat, L



A methodological approach to comparing pros and cons of delocalizing villages: socio-economic and technical issues  

NASA Astrophysics Data System (ADS)

On 7th March 2005, prolonged rainfalls combined with snowfalls activated a wide complex rock slide-earth flow that partly destroyed the village of Cavallerizzo at Cerzeto (Calabria, Southern Italy). Superposed tectonic units made of Palaeozoic metamorphic rocks, overlain by Miocene-Quaternary clastic terrains, crop out in the study area. The main scarp of the landslide developed by a recent normal fault, striking N-S along the western margin of the Crati graben and extended ca. 25 km. In its lower part, the phenomenon evolved in two main earth-flow bodies that extended along minor drainages and then merged along the S. Nicola torrent. The sector affected by the instability actually belongs to a large-scale slope movement: the 2005 activation was in fact only a paroxysmal episode of a long history of slope deformations, noticed in the area since the XVIII century. Warning signs had been recorded for weeks before the collapse, and the threatened area had been put under monitoring by CNR-IRPI. When the movement accelerated, people had already been alerted and evacuated (329 out of 581 inhabitants of Cerzeto were sheltered in nearby villages), thus neither victims nor injured were recorded. As a whole, 124 buildings were severely damaged or destroyed, the main road was interrupted. Immediately after the 7th March 2005 event, the national Department for Civil Protection decided to evaluate the feasibility of delocalizing Cavallerizzo to another site. At this purpose, CNR-IRPI was asked to analysing the "geological suitability" of 3 different sites (Pianette, Amatine, and Colombra), pre-selected by the same Municipality of Cerzeto in accordance to the Civil Protection; the results of the study were completed in early Summer 2005. Between October 2007 and December 2011, a new settlement was realized by the Italian Government, and the houses were delivered to people once living at Cavallerizzo. In the last years, the socio-economic effects of the delocalization of Cavallerizzo have been analysed within the frame of a PhD thesis by one of the authors. The present study focuses on the Cavallerizzo case study to discuss a methodological approach useful to comparing pros and cons of delocalizing villages, aiming at properly considering socio-economic effects in addition to technical issues.

Guadagno, Eleonora; Iovine, Giulio G. R.; Petrucci, Olga; Forciniti, Pinuccia R.



Informe Anual a la Nación sobre el Estado del Cáncer, de 1975 a 2010, con una sección especial sobre la prevalencia de comorbilidad y su efecto en la supervivencia de personas con cáncer de pulmón, seno, próstata o colorrectal: preguntas y respuestas

El Informe Anual a la Nación sobre el Estado del Cáncer (1975 a 2010), mostró un descenso más acelerado que en años anteriores de los índices de mortalidad por cáncer de pulmón. También contiene una sección especial que destaca los efectos significativos que tienen otras enfermedades en la supervivencia de pacientes con cáncer.


15-Deoxy-?12,14-prostaglandin J2 Reduces Liver Impairment in a Model of ConA-Induced Acute Hepatic Inflammation by Activation of PPAR? and Reduction in NF-?B Activity  

PubMed Central

Objective. 15-Deoxy-?12,14-prostaglandin J2 (15d-PGJ2) reduces inflammation and has been identified as an anti-inflammatory prostaglandin in numerous animal models. In this study, we investigated both effects of 15d-PGJ2 and its protection mechanism in concanavalin A- (ConA-) induced autoimmune hepatitis in mice. Materials and Methods. In vivo, Balb/C mice were injected with ConA (25?mg/kg) to induce acute autoimmune hepatitis, and 15d-PGJ2 (10??g or 25??g) was administered 1?h before the ConA injection. The histological grade, proinflammatory cytokine levels, and NF-?B and PPAR? activity were determined 6, 12, and 24?h after the ConA injection. In vitro, LO2 cells and RAW264.7 cells were pretreated with 15d-PGJ2 (2??M) 1?h before the stimulation with ConA (30??g/mL). The NF-?B and PPAR? activity were determined 30?min after the ConA administration. Results. Pretreatment with 15d-PGJ2 reduced the pathological effects of ConA-induced autoimmune hepatitis and significantly reduced the levels of cytokines after injection. 15d-PGJ2 activated PPAR?, blocked the degradation of I?B?, and inhibited the translocation of NF-?B into the nucleus. Conclusion. These results indicate that 15d-PGJ2 protects against ConA-induced autoimmune hepatitis by reducing proinflammatory cytokines. This reduction in inflammation may correlate with the activation of PPAR? and the reduction in NF-?B activity. PMID:25120564

Chen, Kan; Li, Jingjing; Wang, Junshan; Xia, Yujing; Dai, Weiqi; Wang, Fan; Shen, Miao; Cheng, Ping; Zhang, Yan; Wang, Chengfen; Yang, Jing; Zhu, Rong; Zhang, Huawei; Zheng, Yuanyuan; Lu, Jie; Fan, Zhuoyi; Zhou, Yingqun; Guo, Chuanyong



Flight Deck Surface Trajectory-based Operations (STBO): Results of Piloted Simulations and Implications for Concepts of Operation (ConOps)  

NASA Technical Reports Server (NTRS)

The results offour piloted medium-fidelity simulations investigating flight deck surface trajectory-based operations (STBO) will be reviewed. In these flight deck STBO simulations, commercial transport pilots were given taxi clearances with time and/or speed components and required to taxi to the departing runway or an intermediate traffic intersection. Under a variety of concept of operations (ConOps) and flight deck information conditions, pilots' ability to taxi in compliance with the required time of arrival (RTA) at the designated airport location was measured. ConOps and flight deck information conditions explored included: Availability of taxi clearance speed and elapsed time information; Intermediate RTAs at intermediate time constraint points (e.g., intersection traffic flow points); STBO taxi clearances via ATC voice speed commands or datal ink; and, Availability of flight deck display algorithms to reduce STBO RTA error. Flight Deck Implications. Pilot RTA conformance for STBO clearances, in the form of ATC taxi clearances with associated speed requirements, was found to be relatively poor, unless the pilot is required to follow a precise speed and acceleration/deceleration profile. However, following such a precise speed profile results in inordinate head-down tracking of current ground speed, leading to potentially unsafe operations. Mitigating these results, and providing good taxi RTA performance without the associated safety issues, is a flight deck avionics or electronic flight bag (EFB) solution. Such a solution enables pilots to meet the taxi route RTA without moment-by-moment tracking of ground speed. An avionics or EFB "error-nulling" algorithm allows the pilot to view the STBO information when the pilot determines it is necessary and when workload alloys, thus enabling the pilot to spread his/her attention appropriately and strategically on aircraft separation airport navigation, and the many other flight deck tasks concurrently required. Surface Traffic Management (STM) System Implications. The data indicate a number of implications regarding specific parameters for ATC/STM algorithm development. Pilots have a tendency to arrive at RTA points early with slow required speeds, on time for moderate speeds, and late with faster required speeds. This implies that ATC/STM algorithms should operate with middle-range speeds, similar to that of non-STBO taxi performance. Route length has a related effect: Long taxi routes increase the earliness with slow speeds and the lateness with faster speeds. This is likely due to the" open-loop" nature of the task in which the speed error compounds over a longer time with longer routes. Results showed that this may be mitigated by imposing a small number oftime constraint points each with their own RTAs effectively tuming a long route into a series of shorter routes - and thus improving RTA performance. STBO ConOps Implications. Most important is the impact that these data have for NextGen STM system ConOps development. The results of these experiments imply that it is not reasonable to expect pilots to taxi under a "Full STBO" ConOps in which pilots are expected to be at a predictable (x,y) airport location for every time (t). An STBO ConOps with a small number of intermediate time constraint points and the departing runway, however, is feasible, but only with flight deck equipage enabling the use of a display similar to the "error-nulling algorithm/display" tested.

Foyle, David C.; Hooey, Becky L.; Bakowski, Deborah L.



unknown title  

E-print Network

Evaluación de la inocuidad de los alimentos genéticamente modificados instrumentos para capacitadoresEvaluación de la inocuidad de los alimentos genéticamente modificados instrumentos para capacitadores Organización de las

Naciones Unidas; Y La Alimentación; Y Normas Alimentarias


On the role of localized surface plasmon resonance in UV-Vis light irradiated Au/TiO2 photocatalysis systems: pros and cons.  


The role of localized surface plasmon resonance (LSPR) in UV-Vis light irradiated Au/TiO2 photocatalysis systems has been investigated, and it is demonstrated experimentally for the first time that both pros and cons of LSPR exist simultaneously for this photocatalytic reaction. We have proved that when operating under mixed UV and green light irradiation, the LSPR injected hot electrons (from the Au nanoparticles to TiO2 under green light irradiation) may surmount the Schottky barrier (SB) formed between the Au nanoparticles and TiO2, and flow back into the TiO2. As a result, these electrons may compensate for and even surpass those transferred from TiO2 to the Au nanoparticles, thus accelerating the recombination of UV excited electron-hole pairs in TiO2. This is the negative effect of LSPR. On the other hand, more hot electrons existing on the surface of the Au nanoparticles due to LSPR would favor the photocatalytic reaction, which accompanied by the negative effect dominates the overall photocatalytic performance. The presented results reveal the multi-faceted essence of LSPR in Au/TiO2 structures, and is instructive for the application of metal-semiconductor composites in photocatalysis. Moreover, it is confirmed that the extent to which the above pros and cons of LSPR dominate the overall photocatalytic reaction depends on the intensity ratio of visible to UV light. PMID:25665512

Lin, Zhongjin; Wang, Xiaohong; Liu, Jun; Tian, Zunyi; Dai, Loucheng; He, Beibei; Han, Chao; Wu, Yigui; Zeng, Zhigang; Hu, Zhiyu



Aceptabilidad del diagnóstico rápido casero para HIV entre hombres gay y otros hombres que tienen sexo con hombres (G&HSH) de la Ciudad de Buenos Aires  

PubMed Central

Resumen El uso del diagnóstico rápido para HIV en Argentina, así como otros países de Latinoamérica, ha sido limitado hasta el momento. Este trabajo reporta los resultados provenientes de un estudio cualitativo realizado entre hombres gays y otros hombres que tienen sexo con hombres (G&HSH) de la Ciudad de Buenos Aires, Argentina. El objetivo principal del mismo fue conocer las ventajas y desventajas que los hombres G&HSH perciben en relación al diagnóstico rápido casero para HIV. Se realizaron ocho grupos focales con 73 participantes en los cuales se discutió acerca de las ventajas y desventajas del uso de los diagnósticos rápidos. Las respuestas fueron codificadas utilizando un programa para análisis de datos cualitativos (NVivo) y analizadas temáticamente. Los participantes describieron numerosas ventajas sobre el uso del diagnóstico rápido casero, aunque algunos reportaron importantes preocupaciones dentro de las cuales se destaca la posibilidad de impulsos suicidas si alguien recibe un resultado positivo estando solo. En términos generales se observó una gran aceptabilidad para el uso del diagnóstico rápido si el mismo es realizado por personal de salud en lugares acondicionados para este fin. PMID:25284951

Balán, Iván C.; Carballo-Diéguez, Alex; Marone, Rubén O.; Pando, María A.; Barreda, Victoria; Ávila, María M.




PubMed Central

RESUMEN El estigma relacionado al VIH/SIDA continúa afectando la prestación de servicios de salud y el bienestar físico y mental de las personas con VIH/SIDA (PVS). Recientemente la literatura científica ha señalado la importancia de comprender las manifestaciones de estigma más allá de las interacciones individuales. Por tal razón, investigaciones recientes en y fuera de Puerto Rico enfatizan la importancia de entender cómo factores socio-estructurales (FSE) influyen en los procesos de estigmatización social. Con el propósito de examinar los FSE que influyen en las manifestaciones de estigma relacionado al VIH/SIDA, realizamos y analizamos nueve grupos focales compuestos por hombres y mujeres en tratamiento para el VIH/SIDA que habían tenido experiencias estigmatizantes. Los participantes identificaron FSE relacionados a las manifestaciones de estigma, tales como el uso de viviendas especializadas, descentralización de los servicios de salud y el desarrollo de protocolos administrativos excluyentes en los servicios de salud. Los resultados demuestran la importancia de considerar los FSE en el desarrollo e implementación de intervenciones dirigidas a la población. PMID:24639599




The International Consortium on Lithium Genetics (ConLiGen): an initiative by the NIMH and IGSLI to study the genetic basis of response to lithium treatment.  


For more than half a decade, lithium has been successfully used to treat bipolar disorder. Worldwide, it is considered the first-line mood stabilizer. Apart from its proven antimanic and prophylactic effects, considerable evidence also suggests an antisuicidal effect in affective disorders. Lithium is also effectively used to augment antidepressant drugs in the treatment of refractory major depressive episodes and prevent relapses in recurrent unipolar depression. In contrast to many psychiatric drugs, lithium has outlasted various pharmacotherapeutic 'fashions', and remains an indispensable element in contemporary psychopharmacology. Nevertheless, data from pharmacogenetic studies of lithium are comparatively sparse, and these studies are generally characterized by small sample sizes and varying definitions of response. Here, we present an international effort to elucidate the genetic underpinnings of lithium response in bipolar disorder. Following an initiative by the International Group for the Study of Lithium-Treated Patients ( and the Unit on the Genetic Basis of Mood and Anxiety Disorders at the National Institute of Mental Health,lithium researchers from around the world have formed the Consortium on Lithium Genetics ( to establish the largest sample to date for genome-wide studies of lithium response in bipolar disorder, currently comprising more than 1,200 patients characterized for response to lithium treatment. A stringent phenotype definition of response is one of the hallmarks of this collaboration. ConLiGen invites all lithium researchers to join its efforts. PMID:20453537

Schulze, Thomas G; Alda, Martin; Adli, Mazda; Akula, Nirmala; Ardau, Raffaella; Bui, Elise T; Chillotti, Caterina; Cichon, Sven; Czerski, Piotr; Del Zompo, Maria; Detera-Wadleigh, Sevilla D; Grof, Paul; Gruber, Oliver; Hashimoto, Ryota; Hauser, Joanna; Hoban, Rebecca; Iwata, Nakao; Kassem, Layla; Kato, Tadafumi; Kittel-Schneider, Sarah; Kliwicki, Sebastian; Kelsoe, John R; Kusumi, Ichiro; Laje, Gonzalo; Leckband, Susan G; Manchia, Mirko; Macqueen, Glenda; Masui, Takuya; Ozaki, Norio; Perlis, Roy H; Pfennig, Andrea; Piccardi, Paola; Richardson, Sara; Rouleau, Guy; Reif, Andreas; Rybakowski, Janusz K; Sasse, Johanna; Schumacher, Johannes; Severino, Giovanni; Smoller, Jordan W; Squassina, Alessio; Turecki, Gustavo; Young, L Trevor; Yoshikawa, Takeo; Bauer, Michael; McMahon, Francis J



Potential pros and cons of external healthcare performance evaluation systems: real-life perspectives on Iranian hospital evaluation and accreditation program  

PubMed Central

Background: Performance evaluation is essential to quality improvement in healthcare. The current study has identified the potential pros and cons of external healthcare evaluation programs, utilizing them subsequently to look into the merits of a similar case in a developing country. Methods: A mixed method study employing both qualitative and quantitative data collection and analysis techniques was adopted to achieve the study end. Subject Matter Experts (SMEs) and professionals were approached for two-stage process of data collection. Results: Potential advantages included greater attractiveness of high accreditation rank healthcare organizations to their customers/purchasers and boosted morale of their personnel. Downsides, as such, comprised the programs’ over-reliance on value judgment of surveyors, routinization and incurring undue cost on the organizations. In addition, the improved, standardized care processes as well as the judgmental nature of program survey were associated, as pros and cons, to the program investigated by the professionals. Conclusion: Besides rendering a tentative assessment of Iranian hospital evaluation program, the study provides those running external performance evaluations with a lens to scrutinize the virtues of their own evaluation systems through identifying the potential advantages and drawbacks of such programs. Moreover, the approach followed could be utilized for performance assessment of similar evaluation programs. PMID:25279381

Jaafaripooyan, Ebrahim



Estudio de la fotoabsorción y fotoionización de la molécula de alta relevancia atmosférica no a través de los estados Rydberg con la metodología MQDO  

NASA Astrophysics Data System (ADS)

Los procesos de fotoionización son de una importancia fundamental [1] y encuentran aplicación en un gran número de contextos científicos: Astrofísica [2], química de las radiaciones, biología. Los investigadores de dichos campos, necesitan de valores de fiables de secciones eficaces para la fotoionización parcial, la Fotoabsorción, así como para los procesos de fotofragmentación en amplios intervalos espectrales, particularmente en estudios de modelización [3-5]. En este trabajo se ha centrado la atención sobre el oxido nítrico, que se ha considerado apropiado y relevante por varios motivos: por el trascendental papel que representa en la física y química de la alta atmosfera [6], aparte de por estar íntimamente relacionado con los problemas de contaminación. Los procesos de recombinación disociativa [7] del NO, donde los estados Rydberg se encuentran directamente implicados, son relevantes, por ejemplo, en las regiones E y F de la ionosfera [7]. En este trabajo se estudia la fotoionización del NO desde el estado fundamental con la versión molecular del método del orbital de defecto cuántico (MQDO). Para ello se calcula el diferencial de las fuerzas de oscilador parciales que constituyen los canales de fotoionización del NO desde el estado fundamental. La continuidad del diferencial de fuerza de oscilador calculada a través del umbral de fotoionización, esto es, en las regiones del espectro discreta y del continua, se adopta como criterio de calidad la escasez de datos comparativos [8].

Bustos, E.; Velasco, A. M.; Martín, I.; Lavín, C.


A wireless, remote-query and high sensitivity Escherichia coli O157: H7 biosensor based on the recognition action of Con A  

PubMed Central

Escherichia coli O157: H7 is detected using a remote-query (wireless, passive) magnetoelastic sensor platform to which a 1 µm-thick layer of Bayhydrol 110 and then a layer of functionalized mannose is applied. The multivalent binding of lectin concanavalin A (Con A) to the E. coli surface O-antigen and mannose favors the strong adhesion of E. coli to the mannose modified magnetoelastic sensor; E. coli is rigidly and strongly attached on the mannose-modified sensor through Con A, which works as a bridge to bind to the E. coli surface O-antigen and mannose modified sensor surface. As E. coli is bound to the sensor its resonance frequency shifts, enabling quantification of E. coli concentration with a limit of detection of 60 cells/mL and a linear logarithmic response range of 6.0×101 to 6.1×109 cells/mL. The analysis can be directly conducted without incubation, and completed in 3 h or less. PMID:19548666

Lu, Qingzhu; Lin, Hailan; Ge, Shutian; Luo, Shenglian; Cai, Qingyun; Grimes, Craig A.



A Novel In Vivo siRNA Delivery System Specifically Targeting Liver Cells for Protection of ConA-Induced Fulminant Hepatitis  

PubMed Central

Background Fulminant hepatitis progresses to acute liver failure (ALF) when the extent of hepatocyte death exceeds the liver's regenerative capacity. Although small interfering RNA (siRNA) appears promising in animal models of hepatitis, the approach is limited by drawbacks associated with systemic administration of siRNA. The aim of this study is to develop a hepatocyte-specific delivery system of siRNA for treatment of fulminant hepatitis. Methodology/Principal Findings Galactose-conjugated liposome nano-particles (Gal-LipoNP) bearing siRNA was prepared, and the particle size and zeta potential of Gal-LipoNP/siRNA complexes were measured. The distribution, cytotoxicity and gene silence efficiency were studied in vivo in a concanavalin A (ConA)-induced hepatitis model. C57BL/6 mice were treated with Gal-LipoNP Fas siRNA by i.v. injection 72 h before ConA challenge, and hepatocyte injury was evaluated using serum alanine transferase (ALT) and aspartate transaminase (AST) levels, as well as liver histopathology and TUNEL-positive hepatocytes. The galactose-ligated liposomes were capable of encapsulating >96% siRNA and exhibited a higher stability than naked siRNA in plasma. Hepatocyte-specific targeting was confirmed by in vivo delivery experiment, in which the majority of Gal-LipoNP-siRNA evaded nuclease digestion and accumulated in the liver as soon as 6 h after administration. In vivo gene silencing was significant in the liver after treatment of Gal-Lipo-siRNA. In the ConA-induced hepatitis model, serum levels of ALT and AST were significantly reduced in mice treated with Gal-lipoNP-siRNA as compared with control mice. Additionally, tissue histopathology and apoptosis showed an overall reduction of injury in the Gal-LipoNP siRNA-treated mice. Conclusions/Significance This study is the first to our knowledge to demonstrate reduction of hepatic injury by liver-specific induction of RNA interference using Gal-LipoNP Fas siRNA, highlighting a novel RNAi-based therapeutic potential in many liver diseases. PMID:22970170

Jiang, Nan; Zhang, Xusheng; Zheng, Xiufen; Chen, Di; Siu, Kingsun; Wang, Hongmei; Ichim, Thomas E.; Quan, Douglas; McAlister, Vivian; Chen, Guihua; Min, Wei-Ping



The soil-water balance simulations of a grassland in response to CO2, rainfall, and biodiversity manipulations at BioCON  

NASA Astrophysics Data System (ADS)

The BioCON (Biodiversity, CO2 and N) experiment has been continuously running since 1997. Operated by the University of Minnesota and located within the Cedar Creek Ecosystem Science Reserve in Minnesota, USA, BioCON is a Free-Air CO2 Enrichment (FACE) experiment that investigates plant community response to three key environmental variables: nitrogen, atmospheric CO2 and biodiversity. More recently rainfall exclusion and temperature manipulation were added to the experiment which amounts to 371 plots. The site attempts to replicate predicted average temperature increases and a northern shift of plant species and any associated consequences. FACE experiments have been conducted for a number of years in different countries, but the focus has generally been on how plant communities, soil respiration and microbes respond. Minimal work has been focused on the hydrologic aspects of these experiments which are potentially valuable for investigating global warming effects on local and plot-scale ecohydrology. Thus, the objective of this work is to characterize and model unsaturated flow for different CO2 and rainfall treatments in order to see how they affect soil moisture dynamics and groundwater recharge on grasslands of central Minnesota. Our study focuses on simulating soil moisture dynamics in eighteen of the BioCON plots: six bare plots with regular rainfall regimes (zero plant species, three plots with elevated atmospheric CO2 levels), six regular rainfall regimes (nine plant species, three plots with elevated atmospheric CO2 levels) and six reduced rainfall regimes (nine plant species, three plots with elevated atmospheric CO2 levels). The Simultaneous Heat and Water (SHAW) model, which solves the Richards equation for unsaturated zone water flow coupled to a comprehensive energy balance model, was parameterized with a combination of field and lab estimates of soil properties. Field estimates of saturated hydraulic conductivity using tension infiltrometers ranged from 9.8 x 10-4 to 6.7 x 10-3 cm/s. Soil cores were collected and analyzed for soil hydraulic properties (texture, unsaturated hydraulic conductivity and moisture retention). From the grain size analyzes of soil samples collected every 10 cm until 1m depth, the soil is homogenous and on average 87% sand, 11% silt and 2% clay. We will be presenting results from the simulations and statistical comparisons to observations of soil moisture at four depths in each plot.

Flinker, R. H.; Cardenas, M.; Caldwell, T. G.; Rich, R.; Reich, P.



Intracellular free zinc up-regulates IFN-? and T-bet essential for Th1 differentiation in Con-A stimulated HUT-78 cells  

PubMed Central

Zinc deficiency impairs cellular immunity. Up-regulation of mRNA levels of IFN-?, IL-12R?2, and T-bet are essential for Th1 differentiation. We hypothesized that zinc increases Th1 differentiation via up-regulation of IFN-? and T-bet expression. To test this hypothesis, we used zinc-deficient and zinc-sufficient HUT-78 cells (a Th0 cell line) under different condition of stimulation in this study. We also used TPEN, a zinc-specific chelator, to decrease the bioavailability of zinc in the cells. We measured intracellular free zinc, cytokines, and the mRNAs of T-bet, IFN-?, and IL-12R?2. In this study, we show that in zinc-sufficient HUT-78 cells (a Th0 cell line), mRNA levels of IFN-?, IL-12R?2, and T-bet in PMA/PHA-stimulated cells were increased in comparison to zinc-deficient cells. Although intracellular free zinc was increased slightly in PMA/PHA-stimulated cells, Con-A-stimulated cells in 5 ?M zinc medium showed a greater sustained increase in intracellular free zinc in comparison to cells incubated in 1 ?M zinc. The cells pre-incubated with TPEN showed decreased mRNA levels of IFN-? and T-bet mRNAs in comparison to cells without TPEN incubation. We conclude that stimulation of cells by Con-A via TCR, release intracellular free zinc which functions as a signal molecule for generation of IFN-? and T-bet, and IL-12Rb?2 mRNAs required for Th1 cell differentiation. These results suggest that zinc increase Th1 cell differentiation by up-regulation of IFN-? and T-bet, and IL-12Rb?2 mRNAs. PMID:21439265

Bao, Bin; Prasad, Ananda S.; Beck, Frances WJ; Bao, Ginny W.; Singh, Tapinder; Ali, Shadan; Sarkar, Fazlul H.



Structural studies of some phospho-borate glasses using ultrasonic pulse-echo technique, DSC and IR spectroscopy  

NASA Astrophysics Data System (ADS)

Glasses in the system (95- x) [0.25 Na 2O-0.75 B 2O 3]- x P 2O 5-5 Fe 2O 3 (0? x?15 mol%), have been prepared by the melt quenching technique. Elastic properties and FT-IR spectroscopic studies have been employed to study the role of P 2O 5 on the structure of the glass system. Elastic properties Poisson's ratio, micro-hardness and Debye temperature have been investigated using sound wave velocity measurements at 4 MHz (both longitudinal and shear) at room temperature. The results showed that the density and the molar volume increase as both sound velocities and the determined glass transition temperatures decrease with increasing the contents of P 2O 5. Infrared spectra of the glasses reveal that the borate network consists of diborate units and is affected by the increase in the concentration of P 2O 5 content as a second network former. These results are interpreted in terms of the replacement of the diborate units with B-O-B bridges by phosphate units with non-bridging oxygens (NBOs). Therefore, the elastic moduli are observed to decrease with the increase in P 2O 5 content.

Gaafar, M. S.; Afifi, H. A.; Mekawy, M. M.



ChIP Protocol for EZ-Magna ChIPTM A--anti-GFP, P19 cells *70% con)luent 6cm dish contains ~6.5 million P19 cells.  

E-print Network

. Resuspend the cell pellet with 500ul ice-cold PBS w/ 1X Protease inhibitor cocktail. Resuspend the pellet in 500ul of cell lysis buffer w/ 1X protease inhibitorChIP Protocol for EZ-Magna ChIPTM A--anti-GFP, P19 cells *70% con)luent 6cm

Oliver, Douglas L.


Collisions of matter-wave solitonsSupplementary Information for Collisions of matter-wave solitons Supplementary Figure 1: Comparison between the expansion of a soliton and a repulsive con-  

E-print Network

Collisions of matter-wave solitonsSupplementary Information for Collisions of matter-wave solitons Supplementary Figure 1: Comparison between the expansion of a soliton and a repulsive con- densate. a, the soliton propagates without dispersion, as expected. The small displacement in time is due to a slight time

Loss, Daniel


Liberación\\/mineralización de nitrógeno en hojarasca de Eucalyptus grandis y leguminosas herbáceas, su relación con la calidad física y química del residuo y su efecto sobre el crecimiento de plantas jóvenes de eucalipto  

Microsoft Academic Search

Resumen El tipo de cosecha y manejo de residuos inciden en el contenido de nutrientes del suelo y la productividad forestal. Estos residuos contienen la mayoría del retorno de N. La velocidad de provisión de nutrientes por la descomposición\\/mineralización puede verse afectada por la calidad química y física como por la localización y contacto de los residuos con el suelo.

Alcaraz Maria Luciana



E-print Network

aprovechamiento de las aguas residuales urbanas tanto en tiempo seco como de lluvia,1 PROYECTO SOSTAUGA: EL USO SOSTENIBLE DEL AGUA Y SU RELACIÃ?N CON EL TERRITORIO EN EL CAMPUS DE elemento agua y sus ecosistemas asociados. Preservar y potenciar un elemento clave del patrimonio socio

Fraguela, Basilio B.


IEEE TransacTIons on UlTrasonIcs, FErroElEcTrIcs, and FrEqUEncy conTrol, vol. 59, no. 1, JanUary 2012156 08853010/$25.00 2012 IEEE  

E-print Network

IEEE TransacTIons on UlTrasonIcs, FErroElEcTrIcs, and FrEqUEncy conTrol, vol. 59, no. 1, JanUary 2012156 0885­3010/$25.00 © 2012 IEEE Abstract--Piezoelectric devices, such as piezoelectric trav- eling-wave rotary ultrasonic motors, have composite piezoelec- tric structures. A composite piezoelectric structure

Pugh, Mary


ANALISI MATEMATICA con ELEMENTI di ALGEBRA XX ottobre 2013 1. A = {a, b, . . ., v, z} `e l'insieme delle 21 lettere dell'alfabeto italiano. Quante sono le parole di  

E-print Network

'insieme delle 21 lettere dell'alfabeto italiano. Quante sono le parole di 6 lettere, formate con lettere di A. A = {a, b, . . ., v, z} `e l'insieme delle 21 lettere dell'alfabeto italiano. Quante sono le parole di 6

Serapioni, Raul


IEEE TransacTIons on UlTrasonIcs, FErroElEcTrIcs, and FrEqUEncy conTrol, vol. 60, no. 7, JUly 20131386 08853010/$25.00 2013 IEEE  

E-print Network

IEEE TransacTIons on UlTrasonIcs, FErroElEcTrIcs, and FrEqUEncy conTrol, vol. 60, no. 7, JUly heterogeneous tumors. RF echo data spanning the 1 to 12 MHz frequency range were acquired in three dimensions. These functional signal-to-noise ratios indicated that BSC versus frequency variations between systems ranged from

Illinois at Urbana-Champaign, University of


08853010/$25.00 TBC IEEE 1IEEE TransaCTIons on UlTrasonICs, FErroElECTrICs, and FrEqUEnCy ConTrol, vol. TBC, no. TBC, TBC TBC  

E-print Network

0885­3010/$25.00 © TBC IEEE 1IEEE TransaCTIons on UlTrasonICs, FErroElECTrICs, and FrEqUEnCy Con, density, and spatial organization ranging from tightly clustered to nearly regular to mimic a broad range distribution models used in ultrason- ics literature. section IV describes the pool of synthetic Us data

Clark, James J.


IEEE TransacTIons on UlTrasonIcs, FErroElEcTrIcs, and FrEqUEncy conTrol, vol. 59, no. 9, sEpTEmbEr 20122066 08853010/$25.00 2012 IEEE  

E-print Network

IEEE TransacTIons on UlTrasonIcs, FErroElEcTrIcs, and FrEqUEncy conTrol, vol. 59, no. 9, s, and michael oelze, Senior Member, IEEE Abstract--Quantitative ultrasonic techniques using back- scatter on the inverse cubic of the size. Diameters of the distributions ranged between [25, 100], [25, 50], [50, 100

Illinois at Urbana-Champaign, University of


IEEE TransacTIons on UlTrasonIcs, FErroElEcTrIcs, and FrEqUEncy conTrol, vol. 59, no. 12, dEcEmbEr 2012 2655 08853010/$25.00 2012 IEEE  

E-print Network

IEEE TransacTIons on UlTrasonIcs, FErroElEcTrIcs, and FrEqUEncy conTrol, vol. 59, no. 12, dEcEmbEr 2012 2655 0885­3010/$25.00 © 2012 IEEE Transthoracic Cardiac Ultrasonic Stimulation Induces a Negative- diac bioeffects resulting from ultrasonic stimulation using a specific set of acoustical parameters

Illinois at Urbana-Champaign, University of


Diffusional homogenization of light REE in garnet from the Day Nui Con Voi Massif in N-Vietnam: Implications for SmNd geochronology and timing of metamorphism in  

E-print Network

Diffusional homogenization of light REE in garnet from the Day Nui Con Voi Massif in N Keywords: Sm­Nd Lu­Hf Garnet dating Trace elements Diffusion Vietnam High-grade migmatitic and mylonitic diffusional profiles in garnet. Laser ablation ICP-MS analyses of trace elements indicate that REE and Hf

Demouchy, Sylvie


08853010/$25.00 2009 IEEE 2145IEEE TransacTIons on UlTrasonIcs, FErroElEcTrIcs, and FrEqUEncy conTrol, vol. 56, no. 10, ocTobEr 2009  

E-print Network

EqUEncy conTrol, vol. 56, no. 10, ocTobEr 2009 Abstract--State-of-the-art 3-D medical ultrasound imaging requires transmitting and receiving ultrasound using a 2-D array of ultrasound transducers with hundreds and transducer array can lead to a portable, high-performance, and inexpensive 3-D ultrasound imaging system

Khuri-Yakub, Butrus T. "Pierre"


Wound Healing & Management Node: Titles list Version 1 1 July 2010 Publication list of Evidence Summary titles available in the Wound Healing and Management Node of the JBI COnNECT+ database as at 31 December 2011.  

E-print Network

Wound Healing & Management Node: Titles list Version 1 1 July 2010 Publication list of Evidence Summary titles available in the Wound Healing and Management Node of the JBI COnNECT+ database as at 31 December 2011. Authors: The Wound Healing and Management Node Group This list is updated quarterly Evidence



E-print Network

mass media, le istituzioni pubbliche e private, ...) Definizione di green marketing = un'evoluzione del: "pettenella" 1. Introduzione Dal Total marketing al Social marketing iniziative del settore pubblico #12;2 Evoluzione del marketing Fino agli anni '30 il m. si concentra sui

Pettenella, Davide



Microsoft Academic Search

El desarrollo a nivel industrial, agrícola y urbano genera acciones contaminantes cuyo efecto puede ser inmediato o a largo plazo (la lluvia ácida, los gases que provocan el efecto invernadero y que contribuyen al cambio climático, la explotación excesiva de los recursos naturales, o la deforestación de la selva tropical). Esto provoca la extinción de diferentes especies de plantas o

Cristina Ferrer Lacosta



Quantum computing: pro and con  

Microsoft Academic Search

I assess the potential of quantum computation. Broad and important applications must be found to justify construction of a quantum computer; I review some of the known quantum algorithms and consider the prospects for nding new ones. Quantum computers are notoriously susceptible to making errors; I discuss recently developed fault-tolerant procedures that enable a quantum computer with noisy gates to

Charles C. Lauritsen


Quantum computing: pro and con  

Microsoft Academic Search

I assess the potential of quantum computation. Broad and important applications must be found to justify construction of a quantum computer; I review some of the known quantum algorithms and consider the prospects for finding new ones. Quantum computers are notoriously susceptible to making errors; I discuss recently developed fault-tolerant procedures that enable a quantum computer with noisy gates to

John Preskill



De conformidad con la Ley de Derechos Humanos de 1977 del Distrito de Columbia, segn enmendada, Cdigo Oficial del Distrito de Columbia, Seccin 2-1401.01 et seq., (Ley), el Distrito de Columbia no discrimina, de forma visible ni percibida, por  

E-print Network

De conformidad con la Ley de Derechos Humanos de 1977 del Distrito de Columbia, según enmendada la ausencia, el empleado no perderá ninguno de sus beneficios de empleo, ni tampoco los derechos por las estipuladas por la Ley. LAS QUEJAS CON RESPECTO A ALGUNA DENEGACI�N DE LOS DERECHOS EN VIRTUD DE

Weaver, Harold A. "Hal"


Coagulase-negative staphylococci (CoNS) isolated from ready-to-eat food of animal origin--phenotypic and genotypic antibiotic resistance.  


The aim of this work was to study the pheno- and genotypical antimicrobial resistance profile of coagulase negative staphylococci (CoNS) isolated from 146 ready-to-eat food of animal origin (cheeses, cured meats, sausages, smoked fishes). 58 strains were isolated, they were classified as Staphylococcus xylosus (n = 29), Staphylococcus epidermidis (n = 16); Staphylococcus lentus (n = 7); Staphylococcus saprophyticus (n = 4); Staphylococcus hyicus (n = 1) and Staphylococcus simulans (n = 1) by phenotypic and genotypic methods. Isolates were tested for resistance to erythromycin, clindamycin, gentamicin, cefoxitin, norfloxacin, ciprofloxacin, tetracycline, tigecycline, rifampicin, nitrofurantoin, linezolid, trimetoprim, sulphamethoxazole/trimethoprim, chloramphenicol, quinupristin/dalfopristin by the disk diffusion method. PCR was used for the detection of antibiotic resistance genes encoding: methicillin resistance--mecA; macrolide resistance--erm(A), erm(B), erm(C), mrs(A/B); efflux proteins tet(K) and tet(L) and ribosomal protection proteins tet(M). For all the tet(M)-positive isolates the presence of conjugative transposons of the Tn916-Tn1545 family was determined. Most of the isolates were resistant to cefoxitin (41.3%) followed by clindamycin (36.2%), tigecycline (24.1%), rifampicin (17.2%) and erythromycin (13.8%). 32.2% staphylococcal isolates were multidrug resistant (MDR). All methicillin resistant staphylococci harboured mecA gene. Isolates, phenotypic resistant to tetracycline, harboured at least one tetracycline resistance determinant on which tet(M) was most frequent. All of the isolates positive for tet(M) genes were positive for the Tn916-Tn1545 -like integrase family gene. In the erythromycin-resistant isolates, the macrolide resistance genes erm(C) or msr(A/B) were present. Although coagulase-negative staphylococci are not classical food poisoning bacteria, its presence in food could be of public health significance due to the possible spread of antibiotic resistance. PMID:25475289

Chaj?cka-Wierzchowska, Wioleta; Zadernowska, Anna; Nalepa, Beata; Sierpi?ska, Magda; ?aniewska-Trokenheim, ?ucja



Influence of B 2 O 3 on the structure and crystallization of soil active glasses  

Microsoft Academic Search

Glasses of the SiO2–P2O5–K2O–MgO–CaO–B2O3 system acting as nutrients carriers in the soil environment were synthesised by the melt-quenching technique. Thermal properties\\u000a were studied using DTA\\/DSC methods and the influence of B2O3 and P2O5 content on thermal stability and crystallization process of these glasses was examined. The structure of the glass network\\u000a was characterized by FTIR, 31P, and 11B MAS NMR.

Magdalena Szumera; Irena Wac?awska; Zbigniew Olejniczak



Synthesis and Polymorphism of PdP2O6  

Microsoft Academic Search

Transparent needlelike brownish-yellow single crystals of PdP2O6 have been grown in air under P2O5-rich composition in the system PdO-P2O5. It crystallizes in the orthorhombic system, the possible space group Pmna or P2na, with a = 12.4904(9) Å, b = 4.5759(5) Å, c = 4.2344(3) Å, and Z = 2. This phase changes into a monoclinic phase under heating conditions. The

A. Watanabe; S. Takenouchi; J.-P. Wignacourt; P. Conflant; M. Drache; J.-C. Boivin



Chemically durable nitrided phosphate glasses resulting from nitrogen\\/oxygen substitution within PO 4 tetrahedra  

Microsoft Academic Search

Nitrided phosphate glasses were prepared from phosphate melts, with molar compositions 15R2O–15K2O–15R?O–5Al2O3–50P2O5 and 12R2O–12K2O–20R?O–6Al2O3–50P2O5 (R=Li or Na; R?=Mg, Ba or Zn), exposed to flowing ammonia for up to several days. The effects of nitrogen incorporation on glass properties were determined by measuring glass transition temperatures, thermal expansion coefficients and dissolution rates in water as a function of the nitrogen content.

André Le Sauze; Roger Marchand



Thermal, structural and magnetic properties of some zinc phosphate glasses doped with manganese ions  

Microsoft Academic Search

(MnO)x·(P2O5)40·(ZnO)60?x glasses containing different concentrations of MnO ranging from 0 to 20mol% were prepared by the melt-quenching technique. The samples had a fixed P2O5 content of 40mol% and the MnO:ZnO ratio was varied. The thermal, structural and magnetic properties of these glasses were investigated by means of differential thermal analysis (DTA), electron paramagnetic resonance (EPR) and magnetic susceptibility measurements. Compositional

Petru Pascuta; Maria Bosca; Gheorghe Borodi; Eugen Culea



The effect of phosphate content on the bioactivity of soda-lime-phosphosilicate glasses  

Microsoft Academic Search

We report on the bioactivity of two series of glasses in the SiO2–Na2O–CaO–P2O5 system after immersion in simulated body fluid (SBF) after 21 days. The effect of P2O5 content was examined for compositions containing 0–9.25 mol.% phosphate. Both series of glasses degraded to basic pH, but\\u000a the solutions tended towards to neutrality with increasing phosphate content; a result of the acidic phosphate

M. D. O’Donnell; S. J. Watts; R. G. Hill; R. V. Law



Energy and Resource Saving of Steelmaking Process: Utilization of Innovative Multi-phase Flux During Dephosphorization Process  

NASA Astrophysics Data System (ADS)

An increase in the utilization efficiency of CaO, one of the major fluxing agents used in various steelmaking processes, is required to reduce the amount of discharged slag and energy consumption of the process. The authors have intensively focused on the development of innovative dephosphorization process by using so called "multi-phase flux" composed of solid and liquid phases. This article summarizes the research on the above topic done by the authors, in which the formation mechanisms of P2O5-containing phase during CaO or 2CaO·SiO2 dissolution into molten slag, the phase relationship between solid and liquid phases at equilibrium, and thermodynamic properties of P2O5-containing phase have been clarified. The reactions between solid CaO or 2CaO·SiO2 and molten CaO-FeO x -SiO2-P2O5 slag were observed by dipping solid specimen in the synthesized slag at 1573 K or 1673 K. The formation of the CaO-FeO layer and dual-phase layer of solid 2CaO·SiO2 and FeO x -rich liquid phase was observed around the interface from the solid CaO side toward the bulk slag phase side. Condensation of P2O5 into 2CaO·SiO2 phase as 2CaO·SiO2-3CaO·P2O5 solid solution was observed in both cases of CaO and 2CaO·SiO2 as solid specimens. Measurement of the phase relationship for the CaO-FeO x -SiO2-P2O5 system confirmed the condensation of P2O5 in solid phase at low oxygen partial pressure. The thermodynamics of 2CaO·SiO2-3CaO·P2O5 solid solution are to be clarified to quantitatively simulate the dephosphorization process, and the current results are also introduced. Based on the above results, the reduction of CaO consumption, the discharged slag curtailment, and energy-saving effects have been discussed.

Matsuura, Hiroyuki; Hamano, Tasuku; Zhong, Ming; Gao, Xu; Yang, Xiao; Tsukihashi, Fumitaka



IEEE TransacTIons on UlTrasonIcs, FErroElEcTrIcs, and FrEqUEncy conTrol, vol. 60, no. 3, March 2013524 08853010/$25.00 2013 IEEE  

E-print Network

IEEE TransacTIons on UlTrasonIcs, FErroElEcTrIcs, and FrEqUEncy conTrol, vol. 60, no. 3, March ranges of 4 to 6 µm and 6 to 8 µm). The stiffness was found to lie between 4 and 22 mN/m and to decrease exponentially with the microbubble size within the diameter range investigated. No cantilever spring constant

Konofagou, Elisa E.


IEEE TransacTIons on UlTrasonIcs, FErroElEcTrIcs, and FrEqUEncy conTrol, vol. 60, no. 11, novEmbEr 2013 2257 08853010/$25.00 2013 IEEE  

E-print Network

IEEE TransacTIons on UlTrasonIcs, FErroElEcTrIcs, and FrEqUEncy conTrol, vol. 60, no. 11, nov) pulse length (PL), ranging here from 67 s to 6.7 ms, on the physi- ology of the FUS-induced BBB opening at different acoustic pressures, ranging from 0.30 to 0.60 MPa. Permeability and volume of opening were both

Konofagou, Elisa E.


Study on the Strategies for the Soil and Water Resource Con-servation of Slopeland in Taiwan in Response to the Extreme Climate  

NASA Astrophysics Data System (ADS)

Global climate change results in extreme weather, especially ex-treme precipitation in Taiwan. Though the total amount of precipi-tation remains unchanged, the frequency of rainfall return period increases which affects slopeland and causes sediment disaster. In Taiwan, slopeland occupies about 73% of national territory. Under harsh environmental stress, soil and water conservation of slope-land becomes more important. In response to the trends of global-ization impacts of climate change, long term strategic planning be-comes more necessary. This study reviewed international practices and decision making process about soil and water conservation of slopeland; and conducted the compilation and analysis of water and soil conservation related research projects in Taiwan within the past five years. It is necessary for Taiwan to design timely adaptive strategies about conducting the all-inclusive conservation of na-tional territory, management and business operation of watershed based on the existing regulation with the effects of extreme weather induced by climate change and the changes of social-economic en-vironments. In order to realize the policy vision of "Under the premise of multiple uses, operating the sustainable business and management of the water and soil resources in the watershed through territorial planning in response to the climate and so-cial-economic environment change". This study concluded the future tasks for soil and water con-servation: 1.Design and timely amend strategies for soil and wand water conservation in response to extreme weather. 2. Strengthen the planning and operating of the land management and integrated conservation of the water and soil resources of key watershed. 3. Manage and operate the prevention of debris flow disaster and large-scale landslide. 4. Formulate polices, related regulations and assessment indicators of soil and water conservation. 5. Maintain the biodiversity of the slopeland and reduce the ecological footprint. 6. Conduct soil and water conservation research according to the importance and urgency of policies. 7. Implement the international cooperation, technology communication, talent cultivation, and integrated education and promotion.

Huang, Wen-Cheng




E-print Network

PHOSPHORUS BASICS Larry G. Bundy Dept. of Soil Science University of Wisconsin #12;Phosphorus Terminology · Phosphorus (P) = element name and symbol · P2O5 = phosphate (oxide) Amount of P in fertilizers use #12;Forms & Concentrations of Phosphorus (P) in Soils Form Concentration (ppm) Total 1000 Soil

Balser, Teri C.


DataRepository:Section1Samples,Locations,andTypesofAnalyses Sample#Mapunit,geographiclocalityandsequencenumberCoordinates40  

E-print Network

O, MnO, CaO, Na2O, K2O and P2O5) fused glass beads are prepared. Powders are calcined overnight at 1000 beads are prepared from calcined powders using a `pre-fused' flux from Claisse, with composition of 35

Busby, Cathy


Optimizing Rougher Flotation Parameters of the Esfordi Phosphate Ore  

Microsoft Academic Search

The performance of rougher flotation of the Esfordi phosphate ore was studied by a series of batch flotation tests. A central composite experimental design was employed to evaluate the effects of six main parameters on the recovery of phosphate and iron into the concentrate. A response surface model was fitted to results for the recovery of P2O5, which showed that

A. Dehghani; A. Azizi; S. H. Mojtahedzadeh; Kh. Gharibi



Nutrient Management Specialist or Broker Signature The following appendices need to accompany the Nutrient Balance Worksheets if applicable  

E-print Network

Nutrient balances for P2O5 and K2O are based Soil Test Recommendations. Fields 4 ­ 8 have a 150' manure the Nutrient Balance Worksheets if applicable: · Maps of fields where manure is to applied including manure application setbacks. Nutrient Balance Sheets Prepared for 717-299-5691 273 Centerville Road, Lancaster, PA

Guiltinan, Mark


40 CFR 63.602 - Standards for existing sources.  

Code of Federal Regulations, 2010 CFR fluorides in excess of 5.0 gram/metric ton of equivalent P2 O5 feed (0.010 lb/ton). (2) Submerged combustion process. On and after the date on which the performance test required to be conducted by §§ 63.7...



40 CFR 60.204 - Test methods and procedures.  

Code of Federal Regulations, 2014 CFR

... P=Mp Rp where: Mp = total mass flow rate of phosphorus-bearing feed, Mg/hr (ton/hr). Rp = P2 O5...shall be used to determine the mass flow rate (Mp ) of the phosphorus-bearing feed. (ii) The Association of Official...



40 CFR 60.224 - Test methods and procedures.  

Code of Federal Regulations, 2012 CFR

... P=Mp Rp where: Mp =total mass flow rate of phosphorus-bearing feed, Mg/hr (ton/hr). Rp =P2 O5...shall be used to determine the mass flow rate (Mp ) of the phosphorus-bearing feed. (ii) The Association of Official...



The accompanying Soil Test Report (and supplemental Soil Test Notes, when provided) will help you assess  

E-print Network

g = gram pH = acidity Sat. = saturation N = nitrogen P2 O5 = phosphate K2 O = potash % = percent EstThe accompanying Soil Test Report (and supplemental Soil Test Notes, when provided) will help you- formation you filled in on the Soil Sample Information Sheet you submitted with the soil sample. The "Lab

Liskiewicz, Maciej


Acta Materiala, 2007, 55(10), 3305-3313, doi:10.1016/j.actamat.2007.01.029 SSStttrrruuuccctttuuurrraaalll tttrrraaannnsssfffooorrrmmmaaatttiiiooonnnsss ooofff bbbiiioooaaaccctttiiivvveee ggglllaaassssss 444555SSS555 wwwiiittthhh ttthhheeerrrmmmaaalll  

E-print Network

compositions in the ternary Na2O, SiO2, CaO system with 6 wt.% P2O5 showed that the 45S5 Bioglass® (45 wt.% Si were established. KKeeyywwoorrddss:: Silicates; Bioactive glasses; Crystallization; Differential scanning calorimetry; X-ray diffraction I. Introduction Bioactive glasses are biocompatible and exhibit

Paris-Sud XI, Université de


The geochemistry of phosphorus in granite rocks and the effect of aluminium  

NASA Astrophysics Data System (ADS)

Phosphorus has been shown to have a profound influence on the evolution of silicate melt systems. It also controls the geochemical behavior of rare earths, uranium, thorium, strontium and other elements through the relationships between melt and accessory phosphates. Based on experimental data, Harrison and Watson (1984) proposed a model of saturation behavior of apatite in crustal melts as a function of temperature and silica content. Subaluminous granites fit in well with such a model, but departures are evident in the case of peraluminous granites. A systematic study of the distribution of P 2O 5 in granitoids from all over the world shows that there are two modes to describe phosphorus enrichment in peraluminous granitic rocks: (1) The Hoyos-type trend, which is parallel to the one in Harrison and Watson's (HW) model but with higher P 2O 5 concentrations at the same silica contents and (2) The Pedrobernardo-type trend, implying an increase in phosphorus in the most SiO 2-rich differentiates of strongly peraluminous, low-Ca granites. Pedrobernardo-type leucogranites are characterized by the presence of rare phosphates or P-rich feld-spars. Since they have excess P 2O 5 over CaO to form normative apatite, we here propose the term "perphosphorous granites". High phosphorus contents appear to be due to elevated apatite solubility in peraluminous granitic melts rather than to high amounts of restitic apatite. Both the Hoyos- and Pedrobernardo-type departures from the HW model can be "corrected" by using the expression: P 2O 5corrected = P 2O 5HW × efactor, where P 2O 5HW is the prediction according to the HW model, and "factor" is (ASI-1) × ( {6429}/{T}) , ASI being the {Al 2O 3}/{(CaO+Na 2O+K 2O) } molar ratio. We suggest that such departures could be caused by a decrease in the Ca activity in the melt as a result of increased peraluminousity. The Pedrobernardo-type trend is a limiting case in which Ca-activity in the melt is nearly zero and calcium, instead of phosphorus, becomes the essential structural constituent (ESC) of the apatite. When this happens, phosphorus starts behaving as an incompatible element that is concentrated in late fluids. High P 2O 5 contents are more characteristic of S- than other granite types. No significant departures from the HW model have been found for I-, A- or M-type granites. In Central Iberia, granites associated with U, Sn and W mineralizations usually have high phosphorus contents. Values of P 2O 50.5 wt% at SiO 270 wt.% are good indicators of economic mineralization.

Bea, F.; Fershtater, G.; Corretgé, L. G.



Revision curricular a partir de un analisis comparativo de las discrepancias en los curriculos de una escuela de optometria en Puerto Rico con las competencias requeridas para las agencias de revalida y acreditacion 2004  

NASA Astrophysics Data System (ADS)

El proposito de esta investigacion, un estudio cualitativo de caso, fue comparar y contrastar el curriculo vigente de la Escuela de Optometria de la UIAPR con las competencias y estandares requeridos por las agencias de acreditacion y de revalida. Con este proposito, decidimos realizar una revision y un analisis de documentos: el prontuario de cada uno de los cursos de los curriculos implantados en el 1993 y en el 2001; las competencias y estandares establecidos por las agencias de revalida y de acreditacion; y las estadisticas en las que se analiza el porcentaje de estudiantes que aprueban cada una de las partes de los examenes de revalida entre el 1998 al 2003. Se realizaron entrevistas dirigidas para dar apoyo y complementar la revision y el analisis de estos documentos. Los participantes de las entrevistas fueron tres estudiantes de la clase de optometria del 2004 (ultima clase del curriculo del 1993); tres estudiantes de la clase de optometria del 2005 (primera clase graduanda del curriculo vigente) y tres profesores y/o directores de los Departamentos de Ciencias Basicas, Ciencias Clinicas y Cuidado al Paciente. Esta investigacion se enmarco en el modelo de evaluacion curricular de discrepancia de Malcolm Provus y en el modelo de desarrollo basado en competencias. Uno de los hallazgos mas importantes del estudio es que los cambios que se implantaron al curriculo del 2001 no han logrado que los estudiantes mejoren su ejecucion en los examenes de revalida. Por otro lado, se encontro que el curriculo vigente atiende completamente los estandares de la practica de Optometria, pero no las competencias. Esta informacion fue validada mediante el uso de una tabla de cotejo para el analisis de los cursos y de la informacion obtenida de las entrevistas. El estudio determina y concluye que existen discrepancias entre los prontuarios de los cursos del curriculo y las competencias requeridas por la agencia de revalida. Segundo, que el Departamento de Ciencias Basicas es el que presenta mas deficiencias en el desarrollo de las competencias. El investigador recomienda disenar e implantar un curriculo basado en competencias y proveer formacion en didactica y procesos de aprendizaje a los profesores.

Rivera Pacheco, Andres


Determining the Origin of Phosphates in Lherzolitic Shergottites Through Phosphate Saturation Experiments  

NASA Astrophysics Data System (ADS)

Phosphorous has been correlated with sulfur and chlorine in martian soils with some soils containing several wt % P2O5 and high-P2O5 layer covers many rocks. However, using the RAT to remove the top few mm of some rocks revealed zones of low-P2O5 in the outer mm relative to the interior composition. This suggests that some igneous rocks of Mars are high in P2O5 and that over time phosphorous has been mobilized into the martian soils. In martian meteorites, phosphorous has been detected in high concentrations relative to terrestrial basalts and cumulates. High intensity x-ray maps of lherzolitic shergottite ALH 77005 reveal phosphates in olivine-hosted melt inclusions and P2O5 zoning in the host-olivine. Analyses of rehomogenized olivine-hosted melt inclusions reveal high-P2O5 glasses (>5 wt %). As phosphates are the major reservoir of REE in martian meteorites, determining if the phosphates are primary igneous or secondary sedimentary minerals may have significant consequences for use of REE as oxybarometers and radiogenic-isotopic dating systems in these meteorites. Therefore, an experimental investigation was initiated to determine whether the phosphates are primary igneous minerals or secondary weathering products. The phosphate saturation curve in SNC magmatic compositions has been studied experimentally by synthesizing the parental melt composition of lherzolitic shergottite ALH 77005 and performing anhydrous crystallization experiments in TZM pressure vessels. The parental melt composition was then doped with 5 wt % P2O5 in the form of CaHPO4 and the crystallization experiments were repeated. ALH 77005's parental melt saturated phosphate near 7 wt % at 1165°C and 5 wt % at 1150°C. These saturation values illustrate how high-P2O5 would have to build up before phosphates would nucleate and are consistent with high-2O5 content found in rehomogenized olivine-hosted melt inclusions. These saturation values are higher than the reported saturation for lunar and typical terrestrial basalts, which may reflect differences in the composition, volatile content, and/or the oxidation state of shergottite magmas. The presence of phosphate-saturated melts in rehomogenized, olivine-hosted melt inclusions suggests that olivine contains previously unaccounted for high levels of phosphate. If the phosphates are magmatic in origin, the evidence suggests that phosphates saturated earlier in the crystallization of lherzolitic shergottite ALH 77005 than previous authors have indicated and therefore phosphates contained in olivines have a larger impact on REE evolution of the magma than if olivine had been crystallizing alone. If the included phosphates are secondary in origin, the presence of enough P2O5 to saturate a melt inclusion with phosphate during rehomogenization suggests that mineral separates of olivine would still carry enough REE to have a significant effect on studies that attempt to use REE for oxybarometers and radiogenic-isotopic dating.

Calvin, C.; Rutherford, M.



Millimeter-wave study of the CO-N 2 van der Waals complex: new measurements of CO- orthoN 2 and assignments of new states of CO- paraN 2  

NASA Astrophysics Data System (ADS)

Rotational transitions of the CO-N 2 van der Waals complex have been measured using the intracavity OROTRON jet spectrometer in the frequency range of 83-133 GHz. For the CO- orthoN 2 spin modification, the observed and assigned 21 rotational transitions belong to the Q- and P-branches of the K=1-0 subband. They complete the previous observation of the corresponding R-branch transitions. In the case of the less abundant form, CO- paraN 2, a new K=1 state, representing simultaneous rotation of both monomers, was detected for the first time. A total of 31 rotational transitions of CO- paraN 2 were assigned to two subbands connecting this new K=1 state with already known lower K=0 and 1 states. The assignments relied in part on energy level differences obtained from precise microwave data. The origin of the newly observed state was determined to be 3.41 cm -1 relative to the K=0 ground state of CO- paraN 2. The analysis yielded rotational parameters, centrifugal distortion parameters and nuclear quadrupole coupling constants due to the presence of two equivalent 14N nuclei for both CO- orthoN 2 and CO- paraN 2.

Surin, L. A.; Potapov, A. V.; Müller, H. S. P.; Panfilov, V. A.; Dumesh, B. S.; Giesen, T. F.; Schlemmer, S.



The Big Con: China's Historical Sabotage  

ERIC Educational Resources Information Center

On June 4, 1989, the Chinese military, under orders from the highest levels of government, violently crushed peaceful civilian demonstrations in Beijing, most symbolically in and around Tiananmen Square. In the end, the Chinese government claimed that the death toll was approximately 200, but the Chinese Red Cross reported 2,000 to 3,000 deaths.…

Terrence Cheng



Leiomioma uterino con extensión cardíaca: manejo anestésico  

Microsoft Academic Search

Summary A 61-year-old woman complaining of dyspnea with moderate effort was diagnosed with intravenous leiomyo- matosis arising in the inferior vena cava with right auri- cular extension. Surgery was performed in a one-stage procedure under extracorporeal circulation using atrio- tomy and venotomy of the inferior vena cava. Complete removal of the tumor was confirmed by transeso-phageal echocardiography during surgery. A

M. Jerez Anera; L. Delange Segura; J. Carmona Aurioles


Mjese las manos con agua tibia co-  

E-print Network

después de preparar alimentos Después de usar el baño o ayudar a un niño a usar el baño Después de manejar cada alimento y al cambiar de alimentos crudos a cocidos. Después de lavar, desinfecte los fre


Golden Rice - Evaluating the Pros and Cons  

NSDL National Science Digital Library

This activity engages students in evaluating the evidence and arguments related to Golden Rice and other possible strategies for preventing vitamin A deficiency. Students use this information to develop evidence-based conclusions about Golden Rice and the prevention of vitamin A deficiency. Students also develop questions that could provide important additional information for evaluating the arguments in favor of and opposed to Golden Rice and related policy proposals. In addition, students analyze how two reasonably accurate articles can present totally opposing points of view on this complex policy issue.

Waldron, Ingrid


Synthetic chemicals have been components of con-  

E-print Network

experi- mental animals are used1 and that products worth 5.6 trillion are regulated by such testing with the current approach to toxicology testing? An ideal study to under- stand whether an agent is harmful. The crucial question therefore is how useful are the cur- rent models, which are mostly animal models, and how

Cai, Long


Bilingual Education in Kyrgyzstan: Pros and Cons.  

ERIC Educational Resources Information Center

This paper discusses the potential of bilingual education and its possible implementation in Kyrgzystan, focusing on why bilingual education can be useful in solving linguistic tension in Kyrgzystan and which organizational questions must be considered to make bilingual education effective. The paper begins by examining and refuting common…

Korth, Britta


McLuhan: Pro and Con.  

ERIC Educational Resources Information Center

Twenty-one critical essays on the ideas and works of Marshall McLuhan are offered in this review. In the course of the essays, McLuhan is characterized alternately as a genius, an extrapolator, and an oracle; a defender of the choice of choicelessness; a generalizer who rearranges, misinterprets, and misreads the facts to support his theses; an…

Rosenthal, Raymond, Ed.


I-ConFIRM Steering Committee

Skip to Main Content at the National Institutes of Health | Epidemiology and Genomics Research In NCI's Division of Cancer Control and Population Sciences Menu Search EGRP Site: EGRP Home About the Program Mission & Vision Organizational


Static Con dentiality Enforcement for Distributed Programs ?  

E-print Network

ucken, Germany, E-mail: In Proceedings of the 9th Static Analysis Symposium, Madrid, Spain;dential data, but merely observing the presence of a mes- sage on a channel for encrypted traÃ?c may leak). These leaks might be intended (when planted by a Trojan-horse program) or unintended (when c

Sabelfeld, Andrei


Roofing with Urethane: Pro and Con.  

ERIC Educational Resources Information Center

Gerald Scott's favorable evaluation of the foamed polyurethane roofing system is based on experiences with 55 buildings at Texas A & M. Michael Kinzer, an architect at Colorado State University, disagrees and claims that the system is difficult to install and maintain, and the cost prohibitive. (MLF)

Kinzer, Michael; Scott, Gerald P.E.



Endoscopist-Directed Propofol: Pros and Cons  

PubMed Central

Concerns about the safety of endoscopist-directed propofol (EDP) have been voiced that propofol should be given only by healthcare professionals trained in the administration of general anesthesia. Here we discuss the safety and drawbacks of EDP for routine endoscopic procedures. Currently, both diagnostic and therapeutic endoscopy are well tolerated and accepted by both patients and endoscopists due to the application of sedation in most clinics worldwide. Accordingly, propofol use is increasing in many countries. It is crucial for endoscopists to be very familiar with the use of propofol or a combination of drugs. However, the controversy regarding the administration of sedation by an endoscopist or an anesthesiologist continues. Until now, there have been no randomized control trials comparing sedation induced by propofol administered by an endoscopist or by an anesthesiologist. It might be difficult to perform this kind of study. For the convenience and safety of sedative endoscopy, it would be important that EDP be generally applied to endoscopic procedures, and for more safety, an anesthesiologist may automatically take care of particular patients at high risk of suffering from propofol side effects. PMID:24765594

Kim, Eun Hye



Endoscopist-directed propofol: pros and cons.  


Concerns about the safety of endoscopist-directed propofol (EDP) have been voiced that propofol should be given only by healthcare professionals trained in the administration of general anesthesia. Here we discuss the safety and drawbacks of EDP for routine endoscopic procedures. Currently, both diagnostic and therapeutic endoscopy are well tolerated and accepted by both patients and endoscopists due to the application of sedation in most clinics worldwide. Accordingly, propofol use is increasing in many countries. It is crucial for endoscopists to be very familiar with the use of propofol or a combination of drugs. However, the controversy regarding the administration of sedation by an endoscopist or an anesthesiologist continues. Until now, there have been no randomized control trials comparing sedation induced by propofol administered by an endoscopist or by an anesthesiologist. It might be difficult to perform this kind of study. For the convenience and safety of sedative endoscopy, it would be important that EDP be generally applied to endoscopic procedures, and for more safety, an anesthesiologist may automatically take care of particular patients at high risk of suffering from propofol side effects. PMID:24765594

Kim, Eun Hye; Lee, Sang Kil



Communicating Genetic Risk: Pros, Cons, and Counsel  

Microsoft Academic Search

Shortly before his death in 1995, Kenneth B. Schwartz, a cancer patient at Massachusetts General Hospital (MGH), founded The Kenneth B. Schwartz Center at MGH. The Schwartz Center is a non-profit organization dedicated to supporting and advancing com- passionate health care delivery, which provides hope to the patient, support to caregivers, and encourages the healing process. The center sponsors the



ORNL/CON-224 Energy Division  

E-print Network

.................................. 3 4. DESCRIPTION OF SUMMARY FORMAT ............................. 4 5. ELECTRIC VAPOR COMPRESSION ....................................... 114 6.1 Dynamic Vapor Compression Systems ....... ...................... 114 6.2 Chemical ............................................... 223 9. NOVEL HEAT PUMP CYCLES ............ ........................... 228 10. CROSSCUTTING PROJECTS

Oak Ridge National Laboratory



E-print Network

ITALIANO O STUDENTE U.E. - titolo accademico: il conseguimento del titolo accademico in Italia può essere Consolato Italiano) su carta intestata completa di relativo timbro in originale; - traduzione ufficiale del Rappresentanza Italiana all'estero competente per territorio (Ambasciata Italiana o Consolato Italiano); - titolo


Incentives for organ donation: pros and cons.  


Altruism still remains the main principle of organ donation worldwide. However, since the current practices has not met the demand for organs, new strategies should be found to encourage organ donation. Implementation of financial incentives in transplantation is a matter of debate among experts in the fields of transplantation, ethics, law, and economics. It should be acknowledged that donors incur many expenses while participating in the transplant process, which seems unfair. Various forms of incentives have been suggested and are currently used worldwide. This article describes current attitudes toward incentives for in transplantation used in different countries, arguing in favor as well as against them. PMID:22841275

Chkhotua, A



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Economic Value Added: Pros and Cons  

Microsoft Academic Search

In times of uncertainty and crisis the performance measurement instruments should be reanalyzed. Thus, alongside the classic indicators of performance, in business financial analysis can be used modern indicators which offer a greater flexibility and efficiency. Such a measurement indicator for financial results closely correlated with the requirement of maximizing shareholder wealth is the Economic Value Added (EVA). The economic




The pros and cons of code validation  

NASA Technical Reports Server (NTRS)

Computational and wind tunnel error sources are examined and quantified using specific calculations of experimental data, and a substantial comparison of theoretical and experimental results, or a code validation, is discussed. Wind tunnel error sources considered include wall interference, sting effects, Reynolds number effects, flow quality and transition, and instrumentation such as strain gage balances, electronically scanned pressure systems, hot film gages, hot wire anemometers, and laser velocimeters. Computational error sources include math model equation sets, the solution algorithm, artificial viscosity/dissipation, boundary conditions, the uniqueness of solutions, grid resolution, turbulence modeling, and Reynolds number effects. It is concluded that, although improvements in theory are being made more quickly than in experiments, wind tunnel research has the advantage of the more realistic transition process of a right turbulence model in a free-transition test.

Bobbitt, Percy J.



erators with general and specific information con-  

E-print Network

- able to support pathogenic microorganism growth or toxin formation, or garlic-in- oil mixtures Are Not Allowed? Fresh or dried meat or meat products includ- ing jerky Canned fruits, vegetables, vegetable butters, flavored oils, hummus, garlic dip, salsas etc. Fish or shellfish products Canned pickled products

Jawitz, James W.


erators with general and specific information con-  

E-print Network

pathogenic microorganism growth or toxin formation, or garlic-in- oil mixtures that are not modified in a way? Fresh or dried meat or meat products includ- ing jerky Canned fruits, vegetables, vegetable butters, flavored oils, hummus, garlic dip, salsas etc. Fish or shellfish products Canned pickled products

Jawitz, James W.


Vacuum assist: angel or demon CON.  


Vacuum-assisted venous drainage (VAVD) to enhance venous return during cardiopulmonary bypass (CPB) was described as early as 1958 but was not widely used until the late 1990s. VAVD was initially used to facilitate the use of smaller cannulas with ministernotomy but was increasingly used to allow reduction in CPB circuit size while maintaining CPB flow rates. This innovation was made without planned consideration to CPB circuit design, most critically that of the venous reservoir. Clinical reports of prime reduction facilitated by VAVD in both adult and pediatric CPB were associated with reduced nadir hematocrit and rates of transfusion that encouraged the proliferation of VAVD in CPB. Concomitantly, investigators have reported both in vitro and in vivo significantly increased arterial emboli associated with the use of VAVD, mostly related to accelerated venous air entrainment. In vitro studies continue to confirm this association and likely underestimate the resulting embolic load as a result of flawed study design. While the evidence for VAVD is equivocal, our understanding of the clinical impact of gaseous microemboli in CPB is similarly limited, most likely confined to blood-brain barrier disruption. It is only after two decades that CPB component design is receiving serious attention in terms of air handling. The ethics of innovation in the field of CPB warrant careful consideration. The application of VAVD is not without consequence. PMID:23930383

Willcox, Timothy W



The Pros and Cons of Cyberspying  

Microsoft Academic Search

The emergence of computers has only accelerated various transitions and added new directions to where the world is heading. Nowadays, such practices as e-commerce, e-government, and e-learning are commonplace. For many of us, it's almost impossible to imagine our lives without email. As the world evolves, we must embrace change and clearly understand the associated dangers. For instance, children have

Maria Ganzha



Sea-floor weathering of phosphate nodules off East Australia: Its effect on uranium oxidation state and isotopic composition  

NASA Astrophysics Data System (ADS)

The relative abundances and 234U /238U activity ratios of tetravalent and hexavalent U in 33 phosphorite nodules from the East Australian continental margin have been determined. U(IV) constitutes between 59-96% (average 80%) of the total U in non-ferruginous Quaternary nodules, but between 11-86% (average 63%) in ferruginous Tertiary nodules. Quaternary phosphorite nodules on the East Australian continental margin form within well-oxygenated, low carbon-flux environments on the upper continental slope, generally at water depths between 350-450 m. Predictable relationships exist between the radiometric age and tetravalent U content (%U(IV)) of the nodules and their P 2O 5, Fe 2O 3, and labile organic carbon concentrations. The nodules probably initially form as part of a more widespread phosphatic layer which contains 7-9% P 2O 5, has Fe 2O 3/K 2O ratios between 3-4, hydrogen indices ( HI) >80, and is relatively uranium-rich ( U/ P2O5 × 10 -4 = 15-20). Virtually all the U is originally incorporated into the nodules as U(IV). The layer is subsequently broken up into discrete nodules which are periodically reworked and exposed at the sediment-water interface. During this exposure, the nodules preferentially gain both apatite and iron hydroxide. As a result, their P 2O 5 concentrations increase to 16-18% within 80 kyr of their formation, whereas the Fe 2O 3/K 2O ratios increase to 8-10. Little or no U apparently accompanies this apatite, for the U/P 2O 5; ratios approximately halve as the P 2O 5 concentration doubles, and the nodules have concordant 230Th /234U and 231Pa /235U ages. Contemporaneously, exposure causes progressive oxidation of both the organic carbon (HI decreases to 20) and tetravalent uranium (U(IV) decreases to 60-70%) contents. The high U concentrations and high %U(IV) of the East Australian samples show that the presence of abundant organic matter is not necessary for the fixation of U in sedimentary apatite. Moreover, the %U(IV) in these phosphorites is not a direct function of the redox potential of the depositional environment, but rather an indicator of the amount of sea-floor weathering experienced by the nodules.

O'Brien, G. W.; Veeh, H. H.; Milnes, A. R.; Cullen, D. J.



Investigaccion-accion en la sala de clases sobre las creencias de la cultura de la ciencia de un grupo de estudiantes universitarios y su relacion reciproca con el aprendizaje de las ciencias biologicas  

NASA Astrophysics Data System (ADS)

La investigacion---accion que se llevo a cabo en la sala de clases tenia como punto de partida las creencias de la cultura de la ciencia de un grupo de estudiantes universitarios para luego examinar sus implicaciones en el proceso de aprendizaje de las Ciencias Biologicas. ¿Que se supone que hagan las creencias en relacion con el aprendizaje? ¿En que consiste incorporar este aspecto a la practica educativa universitaria? Utilizando el modelo de Kemmis y McTaggart (1987) la investigacion-accion se planteo como un proceso dinamico en cuatro momentos en espiral constituidos por la planificacion, la accion, la observacion y la reflexion. Cada una de las fases tuvo una intencion retrospectiva y prospectiva formando una espiral de autorreflexion del conocimiento y la accion. Se llevaron a cabo audio grabaciones en clases y analisis de documentos. Ademas, la profesora-investigadora hizo un portafolio para reflexionar sobre las creencias de la cultura de la ciencia que tienen los estudiantes y las creencias del aprendizaje que tiene la profesora y sobre como la comprension de estos elementos ayudo a mejorar su practica educativa a traves del tiempo. Los resultados obtenidos apuntan a que las creencias de la cultura de la ciencia que tiene el grupo de estudiantes son diversas. Ellos si creen que la ciencia tiene una cultura la cual describieron como: complicada y desconocida que evoluciona constantemente, que es un conjunto de metodos, que es altamente tecnologica, que resuelve problemas de salud, ayuda a interpretar la realidad del mundo que los rodea y su origen y que existen unas intersecciones entre la ciencia y el poder. Sobre las creencias del proceso de aprendizaje de la profesora-investigadora, estas senalan que el modelaje de actores, la vision de la academia que tiene ella asi como la participacion y negociacion entre todos los involucrados en el proceso educativo, son factores que inciden en el proceso de aprendizaje.

Cordova-Santiago, Lizzette Astrid


Ecology and thermal inactivation of microbes in and on interplanetary space vehicle components  

NASA Technical Reports Server (NTRS)

The thermal inactivation curve for Bacillus subtilis var. niger spores on the Viking lander is examined. Tests were conducted at 113 C and 25% RH, and over a wide range of temperatures using .001% RH and additions of P2O5 to dry the environment. Results show the 25% RH environment did not significantly reduce the survival curve, while the survival curves for spores treated under the drier .001% RH environment was reduced by a factor of 3.

Campbell, J. E.



Late Proterozoic diabase dikes of the New Jersey Highlands; a remnant of Iapetan rifting in the north-central Appalachians  

USGS Publications Warehouse

Diabase dikes of widespread occurrence intrude only middle Proterozoic rocks in the New Jersey Highlands. These dikes are enriched in TiO2, P2O5, Zr, and light rare earth elements, and have compositions that range from tholeiitic to alkalic. Dike descriptions, field relations, petrography, geochemistry, petrogenesis, and tectonic setting are discussed. The data are consistent with emplacement in a rift-related, within-plate environment and suggest a correlation with other occurrences of late Proterozoic Appalachian basaltic magmatism.

Volkert, R.A.; Puffer, J.H.



Bioactive borate glass scaffolds: in vitro and in vivo evaluation for use as a drug delivery system in the treatment of bone infection  

Microsoft Academic Search

The objective of this work was to evaluate borate bioactive glass scaffolds (with a composition in the system Na2O–K2O–MgO–CaO–B2O3–P2O5) as devices for the release of the drug Vancomycin in the treatment of bone infection. A solution of ammonium phosphate,\\u000a with or without dissolved Vancomycin, was used to bond borate glass particles into the shape of pellets. The in vitro degradation

Xin Liu; Zongping Xie; Changqing Zhang; Haobo Pan; Mohamed N. Rahaman; Xin Zhang; Qiang Fu; Wenhai Huang



The behavior of chlorine and sulfur during differentiation of the Mt. Somma-Vesuvius magmatic system  

Microsoft Academic Search

Summary   Reheated silicate melt inclusions in volcanic rock samples from Mt. Somma-Vesuvius, Italy, have been analyzed for 29 constituents\\u000a including H2O, S, Cl, F, B, and P2O5. This composite volcano consists of the older Mt. Somma caldera, formed between 14 and 3.55?ka before present, and the younger\\u000a Vesuvius cone. The melt inclusion compositions provide important constraints on pre-eruptive magma geochemistry,

J. D. Webster; F. Raia; B. De Vivo; G. Rolandi



Preparation of Optical Cores of Silica Optical Fibers by the Sol-Gel Method  

Microsoft Academic Search

Preforms for drawing silica optical fibers have been fabricated by using the MCVD method for the preparation of the optical claddings and the sol-gel method for the preparation of the optical cores consisting of TiO2-SiO2 or RE3+-Al2O3-P2O5-SiO2 (RE = Er, Yb) glasses. A novel method has been developed for depositing thin gel layers on the inner silica tube wall, under

Vlastimil Mat?jec; Miloš Hayer; Marie Pospíšilová; Ivan KaŠík



Root Growth, Nodulation, Grain Yield, and Phosphorus Use Efficiency of Lentil as Influenced by Phosphorus, Irrigation, and Inoculation  

Microsoft Academic Search

In a 2?year field experiment on a Typic Ustochrept, low in organic carbon and medium in available phosphorus (P), the effects of P fertilizer (0, 30, and 60 kg P2O5 ha) and PSB (inoculation and no?inoculation) and moisture regimens (rain?fed and irrigated) on soil moisture depletion and grain yield, root growth, nodulation, and P use efficiency of lentil (Lens culinaris) were

K. K. Singh; Ch. Srinivasarao; Masood Ali



Long-Term Phosphorus Fertilization Impacts Soil Fungal and Bacterial Diversity but not AM Fungal Community in Alfalfa  

Microsoft Academic Search

Soil function may be affected by cropping practices impacting the soil microbial community. The effect of different phosphorus\\u000a (P) fertilization rates (0, 20, or 40 kg P2O5?ha?1) on soil microbial diversity was studied in 8-year-old alfalfa monocultures. The hypothesis that P fertilization modifies\\u000a soil microbial community was tested using denaturing gradient gel electrophoresis and phospholipids fatty acid (PLFA) profiling\\u000a to describe soil

M. S. Beauregard; C. Hamel; Atul-Nayyar; M. St-Arnaud



The ceramic artifacts in archaeological black earth (terra preta) from Lower Amazon region, Brazil: chemistry and geochemical evolution  

Microsoft Academic Search

This paper carried out a chemical investigation of archaeological ceramic artifacts found in archaeological sites with Black Earth (ABE) in the Lower Amazon Region at Cachoeira-Porteira, State of Pará, Brazil. The ceramic artifacts, mostly of daily use, belong to Konduri culture (from 900 to 400 years BP). They are constituted of SiO 2 , Al2O3, Fe2O3, Na2O and P2O5; SiO2

Marcondes Lima; Dirse Clara KERN; Alice Helena; Eleotério PINTO; Jorge Raimundo da Trindade


Optimizing Rougher Flotation Parameters of the Esfordi Phosphate Ore  

Microsoft Academic Search

The performance of rougher flotation of the Esfordi phosphate ore was studied by a series of batch flotation tests. A central composite experimental design was employed to evaluate the effects of six main parameters on the recovery of phosphate and iron into the concentrate.A response surface model was fitted to results for the recovery of P2O5, which showed that the

A. Dehghani; A. Azizi; S. H. Mojtahedzadeh; Kh. Gharibi



Interaction of kaolinite with phosphate binders and their effect of the phase transitions in crystalline quartzite  

Microsoft Academic Search

Conclusions The reaction of kaolinite with orthophosphoric acid or an aluminophosphate solution sets in at 60–80°C and continues slowly giving aluminum tetraphosphate and orthophosphate. The process accelerates appreciably with an increase in the temperature and the consequent onset of kaolinite dehydration. The formation solely of aluminum orthophosphate occurs when the molar ratio Al2O3\\/P2O5 is unity or greater, and the formation

P. S. Mamykin; F. G. Flyagin; V. M. Ust'yantsev



Further studies on the lithium phosphorus oxynitride solid electrolyte  

Microsoft Academic Search

First step in the way to the fabrication of an all-solid microbattery for autonomous wireless sensor node, amorphous thin solid films of lithium phosphorus oxynitride (LiPON) were prepared by radio-frequency sputtering of a mixture target of P2O5\\/Li2O in ambient nitrogen atmosphere. The morphology, composition, and ionic conductivity were characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy,

Tristan Pichonat; Christophe Lethien; Nicolas Tiercelin; Sylvie Godey; Emmanuelle Pichonat; Pascal Roussel; Marie Colmont; Paul Alain Rolland



Nitrogen dissolution in alkali-barium-metaphosphate melts  

Microsoft Academic Search

Phosphorus oxynitride glasses were prepared by remelting 30R2O-20BaO-50P2O5, (R=Li, Na or K) glasses in anhydrous ammonia. The nitrogen content of these metaphosphate melts decreased with increasing size of the alkali ion. The dissolution rate in water and thermal expansion coefficient of the base glasses increased with increasing alkali ion size. The dissolution rate of the oxynitride glasses was lower than

Mohan Rajaram; Delbert E. Day



Synthesis and characterization of Ag+ ion conducting glassy electrolytes  

NASA Astrophysics Data System (ADS)

Synthesis and characterization of new Ag+ ion conducting glassy systems: x[0.75AgI:0.25AgC1]: (1 - x)[Ag2O:P2O5], where 0.1 < x < 1 in molar weight fraction, are reported. The present glassy electrolytes have been synthesized by melt-quench technique using a high-speed twin roller-quencher. An alternate host salt: "quenched [0.75AgI:0.25AgC1] mixed system/solid solution", has been used in place of the traditional host AgI. The compositional dependence conductivity studies on the glassy systems: x[0.75AgI:0.25AgC1]:(1 - x)[Ag2O:P2O5] as well as xAgI:(1 - x)[Ag2O:P2O5] prepared identically, indicated that the composition at x = 0.75 exhibited the highest room temperature conductivity (? ~ 5.5 x 10-3 S cm-1). The composition: 0.75[0.75AgI:0.25AgC1]:0.25[Ag2O:P2O5] has been referred to as optimum conducting composition (OCC). The some basic ion transport parameters viz. ionic conductivity (?), ionic mobility (?), mobile ion concentration (n), ionic drift velocity (vd), ion transference number (tion) and activation energy (Ea) values have been characterized with the help of various experimental techniques. A solid state battery was fabricated and its basic cell parameters calculated.

Chandra, Angesh; Bhatt, Alok; Chandra, Archana



The geology of the Florida land-pebble phosphate deposits  

USGS Publications Warehouse

The land-pebble phosphate district is on the Gulf Coastal Plain of Florida. The phosphate deposits are in the Bone Valley formation, dated Pliocene by most writers. These strata overlie the Miocene Hawthorn formation and are overlain by consolidated sands 3 to 20 feet thick. The minable phosphate deposits, called “matrix” in the district, range from a featheredge to about 50 feet in thickness and consist of phosphatic pellets and nodules, quartz sand, and montmorillonitic clay in about equal proportions. Locally the matrix displays cross-bedding and horizontal laminations, but elsewhere it is structureless. The phosphorite particles, composed largely of carbonate-fluorapatite, range in diameter from less than 0.1 mm to about 60 cm and in P2O5 content from 30 to 36 percent. Coarse-pebble deposits, containing 30 to 34 percent P2O5 are found mainly on basement highs; and fine-pebble deposits, containing 32 to 36 percent P2O5 are, are found in basement lows. Deposits in the northern part of the field contain more phosphate particles and their P2O5 content is higher than those in the southern part. The upper part of the phosphatic strata is leached to an advanced degree and consists of quartz sand and clay-sized particules of pseudowavellite and wavellite. The leached zone ranges in thickness from a featheredge to 60 feet. The origin of the land-pebble deposits is incompletely known. Possible modes of origin are a residuum of Miocene age, or a reworked residuum of Pliocene or Quaternary age.

Cathcart, J.B.; Blade, L.V.; Davidson, D.F.; Ketner, K.B.



Ionic Ckonductivity and Glass Transition of Phosphoric Acids  

SciTech Connect

Here we report the low-temperature dielectric and viscoelastic properties of phosphoric acids in the range of H2O:P2O5 1.5 5. Both dielectric and viscosity measurements allow us to determine the glass-transition temperatures of phosphoric acids. The obtained glass-transition temperatures are in good agreement with previous differential scanning calorimetric measurements. Moreover, our analysis reveals moderate decoupling of ionic conductivity from structural relaxation in the vicinity of the glass transition.

Wang, Yangyang [ORNL; Lane, Nathan A [ORNL; Sun, Che-Nan [Oak Ridge National Laboratory (ORNL); Fan, Fei [ORNL; Zawodzinski, Thomas [University of Tennessee, Knoxville (UTK); Sokolov, Alexei P [ORNL



Ionic conductivity and glass transition of phosphoric acids  

SciTech Connect

Here we report the low-temperature dielectric and viscoelastic properties of phosphoric acids in the range of H2O:P2O5 1.5 5. Both dielectric and viscosity measurements allow us to determine the glass-transition temperatures of phosphoric acids. The obtained glass-transition temperatures are in good agreement with previous differential scanning calorimetric measurements. Moreover, our analysis reveals moderate decoupling of ionic conductivity from structural relaxation in the vicinity of the glass transition.

Wang, Yangyang [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL); Lane, Nathan A [ORNL] [ORNL; Sun, Che-Nan [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL); Fan, Fei [ORNL] [ORNL; Zawodzinski, Thomas [University of Tennessee, Knoxville (UTK)] [University of Tennessee, Knoxville (UTK); Sokolov, Alexei P [ORNL] [ORNL



Vitreous tin oxide-based thin film electrodes for Li-ion micro-batteries  

Microsoft Academic Search

Sputter deposited thin films from a Sn\\/(SnO)(B2O3)0.3(P2O5)0.2 composite target are investigated as an alternative to the lithium metal anode for lithium-ion micro-batteries. Experimental conditions related to the manufacturing of the target and elaboration of the vitreous thin films are described. Chemical and physical properties of the thin layer films are presented. Regarding the electrochemical behavior, vitreous tin oxide-based thin films

C Branci; N Benjelloun; J Sarradin; M Ribes



Liming and Fertilization Effects on Triticale (XTriticosecale W.) Yield Between 1999 and 2006  

Microsoft Academic Search

Precipitation amount, distribution and nitrogen (N)-, phosphorus (P2O5)-, potassium (K2O)-, calcium (CaO)-, and magnesium (MgO) fertilization interaction effects were studied on a sandy acidic lessivated brown forest soil; WRB: Haplic Luvisol in the 44 year old Nyírlugos Field Trial (NYFT) in a Hungarian fragile agro-ecosystem in Nyírség region (N: 470 41' 60'' and E: 220 2' 80'') on triticale (X



EFEITOS DA ADUBAÇÃO ORGÂNICA E DA ÉPOCA DE COLHEITA NA QUALIDADE DA MATÉRIA-PRIMA E NOS RENDIMENTOS AGRÍCOLA E DE AÇÚCAR MASCAVO ARTESANAL DE DUAS CULTIVARES DE CANA-DE-AÇÚCAR (CANA-PLANTA) Effects of organic fertiliser and harvest date on quality and agricultural yield and of raw-sugar of two sugarcane cultivar (plant cane)  

Microsoft Academic Search

The objective of this work was to study the effects of three fertilizers process (30 t. ha -1 of corral manure, 3,5 t.ha -1 of chicken manure and chemical fertilizer - 120 kg.ha-1 of P 2O5 and of K 2O at planting time + 60 kg.ha -1 of N in covering) and three harvest dates (July, August and September of

Ivan Antônio dos Anjos; Luiz Antônio de Bastos Andrade; Julio César Garcia; Paulo Alexandre; Monteiro de Figueiredo; Gabriel José de Carvalho


Ageing of pulsed-laser-deposited bioactive glass films  

Microsoft Academic Search

Bioactive glasses are osteoinductive biomaterials of great interest for medical applications as filler material in bone defects and as coating of implants.Bioactive glass thin films have been deposited on silicon plates by ArF laser ablation of silica-based glass targets (53% SiO2, 23% Na2O, 20% CaO, 4% P2O5). Ablation experiments have been carried out in vacuum (10?4mbar) and in a reactive

P González; J Serra; S Liste; S Chiussi; B León; M Pérez-Amor



The effects of strontium-substituted bioactive glasses on osteoblasts and osteoclasts in vitro  

Microsoft Academic Search

Bioactive glasses (BG) which contain strontium have the potential to combine the known bone regenerative properties of BG with the anabolic and anti-catabolic effects of strontium cations. Here we created a BG series (SiO2–P2O5–Na2O–CaO) in which 0–100% of the calcium was substituted by strontium and tested their effects on osteoblasts and osteoclasts in vitro. We show that ions released from

Eileen Gentleman; Yann C. Fredholm; Gavin Jell; Nasrin Lotfibakhshaiesh; Matthew D. O'Donnell; Robert G. Hill; Molly M. Stevens



Rhizobium and Phosphate Solubilizing Bacteria Improve the Yield and Phosphorus Uptake in Wheat (Triticum aestivum)  

Microsoft Academic Search

Rhizobium and phosphorus (P) solubilizing bacteria are important to plant nutrition. These microbes also play a significant role as plant growth-promoting rhizobacteria (PGPR) in the biofertilization of crops. A study was conducted in order to investigate the effects of a rhizobial strain (Thal 8) and a P solubilizer strain (54RB) in single and dual combination with and without P2O5 on



Antimicrobial Effect of Nanometric Bioactive Glass 45S5  

Microsoft Academic Search

Most recent advances in nanomaterials fabrication have given access to complex materials such as SiO2-Na2O-CaO-P2O5 bioactive glasses in the form of amorphous nanoparticles of 20-to 60-nm size. The clinically interesting antimicrobial properties of commercially available, micron-sized bioactive glass 45S5 have been attributed to the continuous liberation of alkaline species during application. Here, we tested the hypothesis that, based on its

T. Waltimo; T. J. Brunner; M. Vollenweider; W. J. Stark; M. Zehnder



In situ Raman spectroscopy investigation of bioactive glass reactivity: Simulated body fluid solution vs TRIS-buffered solution  

Microsoft Academic Search

In the present contribution, the innovative in situ Raman micro-spectroscopy was applied to investigate the in vitro reactivity of various bioactive glasses. All the investigated glasses belonged to the Na2O\\\\K2O–CaO–P2O5–SiO2 system, but contained sensibly different percentages of network modifiers. The glasses were immersed for increasing times, up to 96h, in simulated body fluid (SBF) and in tris-buffered (TRIS) solution. In

D. Bellucci; G. Bolelli; V. Cannillo; A. Cattini; A. Sola



Biological performance of boron-modified bioactive glass particles implanted in rat tibia bone marrow  

Microsoft Academic Search

The aim of the present study was to characterize the neoformed bone tissue around boron-modified bioactive glass particles implanted in rat tibia bone marrow by histologic, histomorphometric and microchemical evaluation. Melt-derived glasses were prepared from a base 45S5 bioactive glass of nominal composition (45% SiO2, 24.5% CaO, 24.5% Na2O and 6% P2O5 in wt%). The glass composition was modified by

Alejandro A. Gorustovich; José M. Porto López; María B. Guglielmotti; Rómulo L. Cabrini



Osteoblast response to bioactive glasses in vitro correlates with inorganic phosphate content  

Microsoft Academic Search

Inorganic phosphate (Pi) is a physiological regulator of osteoblasts and chondrocytes, suggesting that phosphate may contribute to the biological response of these cells to bioactive glasses like Bioglass® 45S5, which is composed of 45% SiO2, 24.5% CaO, 24.5% Na2O, and 6% P2O5. We investigated the effect of varying the Pi content of bioactive glass disks (0%, 3%, 6% and 12%

S. Lossdörfer; Z. Schwartz; C. H. Lohmann; D. C. Greenspan; D. M. Ranly; B. D. Boyan



Combined application of NPK on yield quality of sugarcane applied through SSDI  

Microsoft Academic Search

Field experiments were conducted to study the effects of combined application of nitrogen (N), phosphorus (P) and potassium\\u000a (K) on growth, yield quality and nutrient balance of sugarcane with subsurface drip irrigation by using the sugarcane variety\\u000a ROC89\\/1626 and adopting “3414” project design. It was observed that the appropriate rate of N, P2O5 and K2O increased the plant height, cane

Lin Xu; Hai-Rong Huang; Li-Tao Yang; Yang-Rui Li



The nature of the Ailao Shan-Red River (ASRR) shear zone: Constraints from structural, microstructural and fabric analyses of metamorphic rocks from the Diancang Shan, Ailao Shan and Day Nui Con Voi massifs  

NASA Astrophysics Data System (ADS)

The structural geology, timing of shearing, and tectonic implications of the ASRR shear zone, one of the most striking lineaments in Southeast Asia, have been the topics of extensive studies over the past few decades. The Xuelong Shan (XLS), Diancang Shan (DCS), Ailao Shan (ALS) and Day Nui Con Voi (DNCV) metamorphic massifs along the shear zone have preserved important information on its structural and tectonic evolution. Our field structural analysis, detailed microstructural and fabric analysis, as well as the quartz, sillimanite and garnet fabric studies of the sheared rocks from the massifs demonstrate the dominant roles of three deformation episodes during Cenozoic tectonic evolution in the shear zone. Among the contrasting structural and microstructural associations in the shear zone, D2 structures, which were formed at the brittle to ductile transition during large-scale left-lateral shearing in the second deformation episode, predominate over the structural styles of the other two deformation episodes. Discrete micro-shear zones with intensive grain size reduction compose the characteristic structural style of D2 deformation. In addition, several types of folds (early shearing folds, F21, and late-shearing folds, F22) were formed in the sheared rocks, including discrete to distributed mylonitic foliation, stretching lineation and shear fabrics (e.g., mica fish, domino structures, as well as sigma and delta fabrics). A sequence of microstructures from syn-kinematic magmatic flow, high-temperature solid-state deformation, to brittle-ductile shearing is well-preserved in the syn-kinematic leucocratic intrusions. Deformation structures from the first episode (D1) are characterized by F1 folds and distributed foliations (S1) in rocks due to pure shearing at high temperatures. They are preserved in weakly sheared (D2) rocks along the eastern margin of the ALS belt or in certain low-strain tectonic enclaves within the shear zone. Furthermore, semi-brittle deformation structures, such as hot striae and discrete retrogression zones, are attributed to normal-slip shearing in the third deformation episode (D3), which was probably locally active, along the eastern flank of the DCS range, for example. There are four quartz c-axis fabric patterns in the mylonitic rocks, including type A point maxima, type B Y point maxima with crossed girdles superimposition, type C quadrant maxima, as well as type D point and quadrant maxima combination. They are consistent with microscopic observations of microstructures of high-temperature pure shearing, low-temperature simple shearing and their superimposition. Integrated microstructural analysis and fabric thermometer studies provide information on both high temperature (up to 750 °C) and dominant low-temperature (300-600 °C) deformations of quartz grains in different rock types. Sillimanite and garnet fabrics, especially the latter, were primarily formed at the peak metamorphism during high-temperature pure shearing. The above structural, microstructural and fabric associations were generated in the tectonic framework of the Indian-Eurasian collision. The low-temperature microstructures and fabrics are attributed to left-lateral shearing along the ASRR shear zone from 27 to 21 Ma during the southeastward extrusion of the Indochina block, which postdated high-temperature deformation at the peak metamorphism during the collision.

Liu, Junlai; Tang, Yuan; Tran, My-Dung; Cao, Shuyun; Zhao, Li; Zhang, Zhaochong; Zhao, Zhidan; Chen, Wen



Debate: Does genetic information in humans help us treat patients? PRO--genetic information in humans helps us treat patients. CON--genetic information does not help at all.  


PRO: In the past decade, genotyping has started to help the neurologic practitioner treat patients with three types of epilepsy causing mutations, namely (1) SCN1A, a sodium channel gene mutated in Dravet's sporadic severe myoclonic epilepsy of infancy (SMEI and SMEB); (2) laforin (dual specificity protein phosphatase) and malin (ubiquitin E3 ligase) in Lafora progressive myoclonic epilepsy (PME); and (3) cystatin B in Unverricht-Lundborg type of PME. Laforin, malin, and cystatin B are non-ion channel gene mutations that cause PME. Genotyping ensures accurate diagnosis, helps treatment and genetic counseling, psychological and social help for patients and families, and directs families to organizations devoted to finding cures for specific epilepsy diseases. In SCN1A and cystatin B mutations, treatment with sodium channel blockers (phenytoin, carbamazepine, oxcarbazepine, lamotrigine) should be avoided. Because of early and correct diagnosis by genotyping of SCN1A mutations, the avoidance of sodium channel blockers, and aggressive treatment of prolonged convulsive status, there is hope that Dravet's syndrome may not be as severe as observed in all past reports. Genotyping also identifies nonsense mutations in Lafora PME. Nonsense mutations can be corrected by premature stop codon readthrough drugs such as gentamicin. The community practitioner together with epilepsy specialists in PME can work together and acquire gentamicin (Barton-Davis et al., 1999) for "compassionate use" in Lafora PME, a generalized lysosome multiorgan storage disorder that is invariably fatal. In Unverricht-Lundborg PME, new cohorts with genotyped cystatin B mutations have led to the chronic use of antioxidant N-acetylcysteine and combination valproate clobazam or clonazepam plus antimyoclonic drugs topiramate, zonisamide, piracetam, levetiracetam, or brivaracetam. These cohorts have minimal ataxia and no dementia, questioning whether the syndrome is truly progressive. In conclusion, not only is genotyping a prerequisite in the diagnosis of Dravet's syndrome and the progressive myoclonus epilepsies, but it also helps us choose the correct antiepileptic drugs to treat seizures in Dravet's syndrome and Unverricht-Lundborg PME. Genotyping also portends a brighter future, helping us to reassess the true course, severity, and progressive nature of Dravet's syndrome and Unverricht-Lundborg PME and helping us craft a future curative treatment for Dravet's syndrome and Lafora disease. Without the genotyping diagnosis of epilepsy causing mutations we are stuck with imprecise diagnosis and symptomatic treatment of seizures. CON: Genotyping of epilepsy may help to better understand the genetics of epilepsy, to establish an etiology in a patient with epilepsy, to provide genetic counseling, and to confirm a clinical diagnosis. However, critical analysis reveals that genotyping does not contribute to an improved treatment for the patients. In order to improve treatment, genotyping would have to (1) improve our ability to select the drug of choice for a given epilepsy or epileptic syndrome; (2) improve our ability to predict the individual risk of adverse reactions to certain drugs; (3) improve our ability to avoid unnecessary treatments or treatments that could aggravate seizures. Many example illustrate the lack of impact of genetic information on the treatment outcome: we do not treat Dravet syndrome more successfully since SCN1A testing became available; we do not treat Lafora disease more successfully since testing for laforin and malin became available; we do not need to know the genetic nature of Unverricht-Lundborg disease or test for the cystatin B mutation in order to select or avoid certain drugs; we do not treat Rett syndrome more successfully since MECP2 testing became available; we do not treat JME more successfully since we know its genetic origin; we do not treat autosomal dominant nocturnal frontal lobe epilepsy more successfully since we know its genetic origin and can test for its mutation. The clinical characteristics as well as the

Delgado-Escueta, Antonio V; Bourgeois, Blaise F D



Science Drivers for Con-XScience Drivers for Con-X Presented by  

E-print Network

and their effect on galaxy formation Dark Matter and Dark Energy Use clusters of galaxies to trace the locations of Dark Matter and as independent probes to constrain the amount and evolution of Dark Energy Search for the missing baryonic matter in the Cosmic Web Cycles of Matter and Energy Study dynamics of Cosmic Feedback

Garcia, Michael


Adopte MiPlato: con los alimentos con protenas, la clave est en la variedad.  

E-print Network

, chicken anutty Spoo ey ow to creat ree Protein otein foods ach... Plate poste me tags (o is key fridge 8. Obtain food models or pictures of Protein Foods: fish, chicken, pork, beef, eggs, seeds, nuts, seeds, nuts and eggs Food models or pictures of Protein Foods: fish, chicken, pork, beef, eggs, seeds


Geographic information system based manure application plan.  


A geographic information system (GIS) based manure application plan has been developed for the site-specific application of animal waste to agricultural fields in the Westbrook sub-catchment of the Murray-Darling Basin, south-east Queensland, Australia. Sites suitable for animal waste application were identified using a GIS based weighted linear combination (WLC) model. The degree of land suitability for animal waste application was determined using a range of social, economic, environmental, and agricultural factors. As eutrophication and toxic blue-green algae blooms are a known problem in the catchment, the manure application rates were limited to the rate of crop phosphorus removal. Maximum manure application rate was calculated spatially by taking the crop nutrient (P2O5) requirement and the manure nutrient (P2O5) content into account. The environmental suitability of the fields receiving animal waste was considered in prescribing the final application rate of solid and liquid manures generated by local animal production facilities. The degree of site suitability of the agricultural fields was also used to suggest manure management practices to minimise the socio-environmental risks and increase the nutrient use efficiency of the applied manure. The amount of ammonium nitrogen (NH4-N) that would be added to the soil by satisfying the P2O5 requirement using manure sources was also calculated and an applied NH4-N map was created. This map could be used to assist farmers identify additional nitrogen requirements after manure application. PMID:11995243

Basnet, Badri B; Apan, Armando A; Raine, Steven R



Characteristics of solid-state batteries with zinc/cadmium halide-doped silver phosphate glasses as electrolytes  

NASA Astrophysics Data System (ADS)

Several samples of ion-conducting silver phosphate glasses doped with zinc/cadmium halides are prepared and subjected to X-ray diffraction analysis, transference number measurement, and electrical conductivity studies. The percentage transference numbers of these glasses are found to lie between 98.3 and 99.3, which suggests that the glasses are essentially ionic conductors. The conductivity values range from 1.66×10 -2 to 8.66×10 -2 S cm -1 at 300 °C. Solid-state batteries using these glassy systems as electrolytes with the cell configurations Ag||Ag 2O?P 2O 5?(20%)Zn/CdX 2||(C+I 2) and Ag||Ag 2O?P 2O 5?(20%)Zn/CdX 2||(C+I 2+electrolyte) (where X is Cl, Br or I) have been fabricated and their discharge characteristics studied. Cells with undoped silver phosphate glasses as electrolytes have also been prepared and studied. The addition of Zn/CdX 2 to silver phosphate glass results in a substantial increase in the open-circuit voltage in the order MI 2>MBr 2>MCl 2 (where M is the dopant cation). Cells with Ag||Ag 2O?P 2O 5?(20%)Zn/CdI 2||(C+I 2+electrolyte) deliver the best performance.

Das, S. S.; Baranwal, B. P.; Gupta, C. P.; Singh, Punita


Study on the preparation and properties of silver-doped phosphate antibacterial glasses (Part I)  

NASA Astrophysics Data System (ADS)

Silver-doped phosphate antibacterial glasses were prepared by the melting method. The antibacterial effects of some undoped and silver-doped glasses of compositions 65P 2O 5-10CaO-(25- x) Na 2O, 70P 2O 5-20CaO-(10- x) Na 2Oand (70- x) P 2O 5-30CaO, (where x = 0, 0.5, 1.2 Ag 2O), against Staphylococcus aureus, Pseudomonas aeruginosa and Escherichia coli micro-organisms using agar disk-diffusion assays were investigated. The structures of some glasses were studied by XRD, FT-IR, and UV-VIS spectroscopy. The variation of pH with dissolution rate was studied. The tested silver-free and silver-doped glasses demonstrated different antibacterial effects against the tested micro-organisms. For silver-free glasses, an increase in inhibition zone diameter (zone of no bacterial growth) was seen with the decrease in water pH. Silver-doped glasses showed an increase in inhibition zone diameter with increasing Ag 2O content. The low pH produced by glass dissolution was certainly a critical factor for glass antibacterial effect. The more the phosphate ions released the lower is the pH and the greater the antibacterial effect.

Ahmed, A. A.; Ali, A. A.; Mahmoud, Doaa A. R.; El-Fiqi, A. M.




NASA Astrophysics Data System (ADS)

Molecular dynamics simulations were carried out to investigate the anionic structures of the molten CaO-SiO2-P2O5 system. The results show that the average first nearest-neighbor distances for Si-O and P-O pairs are 1.61 and 1.53 Å, respectively. As expected, above 98 pct P and 95 pct Si show fourfold coordination and form tetrahedral structures. Due to the high basicity, nonbridging oxygen occupies a predominant position in Si and P tetrahedron. Based on the oxygen number of different types, the structures of both Si and P tetrahedron were classified as Q 0, Q 1, Q 2, Q 3, and Q 4, where the superscript referred to the number of bridging oxygen atoms. With the substitution of P2O5 for SiO2, Q 0 decreased and other type of Q i units increased. For Si tetrahedron, Q 2 and Q 3 show most notable change, for P tetrahedron, Q 1and Q 2 show the most notable change. The change of Q i units for Si tetrahedron is larger than that for P tetrahedron. The concentration of free oxygen decreases remarkably with the increase of P2O5 content. The Si-O-P linkage is energetically more favorable than Si-O-Si and P-O-P linkages. P ion has a tendency to promote the polymerization of phosphosilicate melts.

Diao, Jiang; Fan, Guozheng; Liu, Xuan; Xie, Bing



High-silica low-loss three-waveguide couplers on Si by flame hydrolysis deposition  

NASA Astrophysics Data System (ADS)

The authors report the fabrication of high-silica, low-loss three-waveguide couplers (3WC) on Si by a combination of flame hydrolysis deposition (FHD), photolithographic patterning, and reactive ion etching. The device has been designed using the first-order perturbation theory, in order to achieve single-mode operation and to predict the beating length. Simulation of the device has been performed using the beam propagation method. SiO2-P2O5 glass has been employed as core material. P2O5 has been used to increase the refractive index of silica, as well as to decrease its sintering point. The sintering process has been optimized in order to achieve completely sintered, bubble free, low-loss films, preventing the evaporation of the P2O5 as well as the warping of the substrate. The devices have been characterized in terms of insertion loss, power splitting ratio and spectral response. 3WCs with multiple number of beating lengths have also been considered in order to assess the modulation of their spectral response with increasing interaction length.

Barbarossa, Giovanni; Laybourn, Peter J. R.



Raman and X-ray absorption spectroscopy studies of chromium-phosphorus interactions in high-bismuth high-level waste glasses  

NASA Astrophysics Data System (ADS)

High-level waste (HLW) glasses containing bismuth, phosphorus, and chromium were investigated using Raman and X-ray absorption spectroscopy (XAS). The novel and practically important occurrence of foaming on cooling of these melts is associated with P and Cr from the HLW. In response, glasses were synthesized where Bi2O3 and P2O5 contents were varied independently. Relationships between P and Cr were found, where as P2O5-content increases, chromate Cr-O stretch Raman modes diminish intensity, while Cr XAS shows that Cr reduces, from 50% Cr6+ + 50% Cr3+ to nearly 20% Cr6+ + 80% Cr3+, explaining the chromate mode behavior. In the most P2O5-rich glass, the chromate Cr-O distance increases by approximately 0.10 Å, which may indicate bonding between CrO4 and PO4 tetrahedra, similar to that in chromo-phosphates. The presence of chromo-phosphate domains in HLW melts can be linked to oxygen generation as a source of the foaming.

McKeown, David A.; Gan, Hao; Pegg, Ian L.



Eficacia del tratamiento antinflamatorio comparado con antibiótico y placebo en pacientes con bronquitis aguda no complicada y expectoración purulenta. Ensayo clínico aleatorio controlado con placebo.  

E-print Network

??Aquesta tesi tenia per objectiu conèixer l'eficàcia del tractament antiinflamatori (ibuprofèn 500 mg/8h/10d) o antibiòtic (amoxicil•lina+àcid clavulànic 500/125 mg/8h/10d) comparat amb placebo en la resolució… (more)

Bayona Faro, Carolina



CADASIL: arteriopatía cerebral autonómica dominante con infartos subcorticales y leucoencefalopatía  

Microsoft Academic Search

CADASIL is a cerebrovascular autosomal dominant hereditary disease caused by a mutation of the Notch3 gene. Its principal clinical manifestations consist in migraine, recurrent cerebral ischemic episodes, dementia and neuropsychiatric disorders. It is characterized by accumulation of granular osmiophilic material (GOM) located in the middle layer of the small and median sized cerebral arteries. A clinical case is presented of

A. Palomeras i Vilches; A. Picas Jufresa; L. Ramió Torrentà; J. Cristóbal Buñuel Álvarez



Clinical drawbacks of total lymphoid irradiation: the cons  

SciTech Connect

Success has been reported with use of total lymphoid irradiation (TLI) in organ transplant recipients and in patients with rheumatoid arthritis and other autoimmune diseases. In a well-conducted randomized double blind clinical trial, Cook et al have found that TLI was superior to sham irradiation of patients with multiple sclerosis (MS). However, it is clear from looking at this data that not all patients responded to TLI and that with time disease activity returned. Our own experience with TLI in two MS patients was very disappointing. Despite its apparent benefit in some conditions, considerable drawbacks are associated with TLI. These include high financial cost, unpleasant treatment-related side effects, and the possibility that more serious morbidity as well as mortality may be treatment-related. Furthermore, the optimum therapeutic regimen for TLI has not yet been established. Issues related to cumulative dose, dose per fraction, frequency of fractions, field of irradiation, and interaction with other therapies still need clarification. For these reasons we do not recommend TLI as a treatment for MS.

Myers, L.W.; Ellison, G.W.; Fahey, J.L.; Tesler, A.; Gottlieb, M.S.



INEEL/CON-1999-343 October 1999  

E-print Network

between existing fusion experiment and fission test reactor availability. Present fusion experiments have a on Fusion Engineering Albuquerque, New Mexico October 25-28, 1999 #12;a. This work was prepared for the U. S. Department of Energy, Office of Fusion Energy Sciences, under the DOE Idaho Field Office contract number DE

California at Los Angeles, University of



Microsoft Academic Search

La presencia de cationes de metales pesados en el agua crea problemas serios por sus efectos tóxicos sobre animales, plantas y sobre la salud humana. Como existe una gran variedad de procesos industriales que generan este tipo de contaminación, el control de la presencia de metales pesados en agua es difícil. Se ha usado, para algunos de ellos, técnicas de

Renán Arriagada; Rafael García; Ruby Cid


Montaje Experimental de Optica Adaptiva con Tecnología FPGA  

Microsoft Academic Search

An experimental platform based on FPGA devices, dedicated to implement active and adaptive optic software in HDL has been developed. The devel- oped assembly is the first of a series of works focused on this important area of instrumental astronomy. The exposed development is part of a Final Project of Electronic Engineering of the National University of Cordoba. FULL TEXT

F. Rodriguez Brizuela; J. P. Verasay; P. Recabarren



Astrobiological Aspects of Mars and Human Presence: Pros and Cons  

PubMed Central

After the realization of the International Space Station, human exploratory missions to Moon or Mars, i.e. beyond low Earth orbit, are widely considered as the next logical step of peaceful cooperation in space on a global scale. Besides the human desire to extend the window of habitability, human exploratory missions are driven by several aspects of science, technology, culture and economy. Mars is currently considered as a major target in the search for life beyond the Earth. Understanding the history of water on Mars appears to be one of the clues to the puzzle on the probability of life on Mars. On Earth microorganisms have flourished for more than 3.5 Ga and have developed strategies to cope with so-called extreme conditions (e.g., hot vents, permafrost, subsurface regions, rocks or salt crystals). Therefore, in search for life on Mars, microorganisms are the most likely candidates for a putative biota on Mars and the search for morphological or chemical signatures of life or its relics is one of the primary and most exciting goals of Mars exploration. The presence of humans on the surface of Mars will substantially increase this research potential, e.g., by supporting deep subsurface drilling and by allowing intellectual collection and sophisticated in situ analysis of samples of astrobiological interest. On the other hand, such long-duration missions beyond LEO will add a new dimension to human space flight, concerning the distance of travel, the radiation environment, the gravity levels, the duration of the mission, and the level of confinement and isolation the crew will be exposed to. This will raise the significance of several health issues, above all radiation protection, gravity related effects as well as psychological issues. Furthermore, the import of internal and external microorganisms inevitably accompanying any human mission to Mars, or brought purposely to Mars as part of a bioregenerative life support system needs careful consideration with regard to planetary protection issues. Therefore, before planning any human exploratory mission, the critical issues concerning human health and wellbeing as well as protection of Mars in its pristine condition need to be investigated. PMID:19048093

Horneck, G



Pros and cons of organ shielding for CT imaging.  


With the increased importance of CT radiation dose to health care providers, patients and the general public, there is an increased responsibility to minimize patient dose effectively. Bismuth shields offer a simple strategy to reduce dose to certain anterior radiosensitive organs such as breasts and eyes. However, in order to reduce organ dose they must be used properly; improper use can lead to an actual increase in the patient dose. They also create a proportional increase in image noise in the section of the body adjacent to the shield and further reduce the quantitative precision of CT numbers. In addition, shielding can degrade the overall efficiency (by an order of approximately 10%) of the imaging process, reducing the theoretical image quality that can be expected from a certain level of patient dose. However, in spite of their significant disadvantages, there are certain clinical situations and practice considerations that provide qualified justification for their continued use. PMID:25304710

Samei, Ehsan



ORNL/CON-460 The Evaluation of a 4000-Home  

E-print Network

..........................................................................................6 1.4.1 Data Collection 1.4.5 Analysis of Maintenance Costs ................................................................................................8 2. METHODOLOGY AND CALCULATION OF ENERGY SAVINGS.................................9 2.1 Field Data

Oak Ridge National Laboratory


Dial 3111 for Emergencies on Campus pecial emergency telephones con-  

E-print Network

Safety, with the assistance of the New Jersey College University Public Safety Association, has developed should provide: · The location of the call. · His or her identity. · The type of assistance needed alert, Public Safety will follow the U.S. Department of Homeland Security's procedures as necessary


The Prose of Blogging (and a Few Cons, Too)  

ERIC Educational Resources Information Center

"Blogging for the sake of blogging is fine, but what is the value added?" That's a question educational blogging advocates are now coming around to answer, and the value they're finding may seem preposterous to those who associate blogging with barely literate loudmouths and cyber predators. Can this often belligerent wasteland of poor punctuation…

Ramaswami, Rama



Las personas con diabetes deben lograr un balance entre los  

E-print Network

en un lado del plato y los alimentos bajos en carbohidratos al otro lado. Karen Halderson, MPH, RD bajos en carbohidratos, manteniendo cada uno en su propio lado del plato o de la mesa. Comer vegetales en diferentes lados de su plato y ver si su plato está "balanceado". Sin embargo, muchas veces


El dramaturgo de Los olvidados: Entrevista con Juan Radrigán  

E-print Network

, "como el cielo, la piedad y los perros." Y quien mejor que él lo sabe. Radrigán es a los pobres lo que Egon Wolff, Vodanovic, Cuadra, son a la burguesía y clase media chilenas en la dramaturgia nacional. Todos ellos son fieles al medio que representan... actores deben aportar la caracterización. Ni siquiera maquillaje admite. En Hechos consumados hubo que hacer una excepción, pues una de las actrices era rubia y muy llamativa—para no decir hermosa—y debía desempeñar el papel de una vagabunda. Hubo que...

Bravo-Elizondo, Pedro



Formal Veri cation of Con ict Detection Ricky Butler1  

E-print Network

Langley Research Center Hampton VA 23681-2199 Abstract. Safety assessment of new air tra c , and Cesar Mu~noz3 1 Assessment Technology Branch, Mail Stop 130, NASA Langley Research Center Hampton, VA for aircraft separation is partially or completely moved from a centralized air tra c controller

Butler, Ricky W.


Pros and Cons of Paper and Electronic Surveys  

ERIC Educational Resources Information Center

This chapter describes the different types of paper and electronic surveys currently available and their costs and benefits in terms of equipment and printing costs, demands on staff time, and ease of use.

Porter, Stephen R.



Learners or Participants? The Pros and Cons of "Lifelong Learning"  

ERIC Educational Resources Information Center

Whereas adult education used to be the preferred concept for those studying adult music-making, there is now an increasing trend away from this and towards lifelong learning. Uncritically adopting government lifelong learning discourses, however, blurs the line between educational ideals and political ones. Although there may be merit in the…

Mantie, Roger



Pros and cons in the search for extraterrestrial intelligence  

Microsoft Academic Search

I propose a new term, ‘galactic organism with distinct intelligence’, for the extraterrestrial forms, with which humans can make contact. This is because, among the three existing terms: (a) ‘the search for extraterrestrial intelligence#x02019; ‘excludes biology and is inelegant#x02019; (b) ‘extraterrestrial#x02019; does not distinguish between the micro-organisms and highly-evolved intelligent life-forms; and (c) 'unidentified flying object' projects a sense of

S. Sri Kantha



Astronomia solare e ottica con il foro stenopeico  

NASA Astrophysics Data System (ADS)

The observation of the Sun with pinholes was started in Florence's Cathedral in 1475, and in Ulugh Beg observatory in Samarcand in 1424-29, well before the invention of the telescope, for measuring the solar position and the variation of the obliquity of the Earth's axis. Later, with Kepler, pinholes' telescopes were used to follow the solar spots when the telescopes made by Galileo were not available. The use of pinholes in positional solar astrometry continued successfully up to 1800 in some great Italian and French Churches. Nowadays by using pinholes it is possible to show the principles of positional astronomy and imaging to students with instruments very easy to be built at almost no cost. The concepts of focal length, best focus, angular resolution, atmospheric seeing and atmospheric transmittance can be verified with such simple devices. Such pinhole telescopes have been built by primary-school students at the Astronomical Observatory dedicated to the Pope astronomer Sylvester II, located in Bukowiec, Poland, which is at its third year of activity. The largest solar spots have been observed clearly with these instruments, demonstrating the principles discussed in this presentation. The light cast by one of this devices with 70 m of focal length and 1 cm of diameter has permitted to repeat the experiences on the diffraction of the light, made in 1648 by the Jesuits Riccioli and Grimaldi.

Sigismondi, Costantino


University Facilities Planning & Con-Project Manager; Bahar Armaghani  

E-print Network

% recycled rubber tires Indoor Environmental Quality Carbon Dioxide monitoring Good housekeeping during conditions. Materials and Resources Building reuse, maintain 75% of existing shell Waste management plan

Slatton, Clint


Introduction The study attempts to quantify several con-  

E-print Network

was observed in the way that supervisors and hourly employees see the dominant cul- tures at the workplace- pany is related to the dominant climate in the workplace. A creative climate is characterized by high. Systems where open communication is the norm yield better outcomes and result in higher morale than more


Travellers' diarrhoea - pros and cons of different prophylactic measures.  


Travellers' diarrhoea is the most likely cause for disturbing travel arrangements. At an average, 30-40% of tourists are concerned, depending on the travel destination. Due to the high impact on the travellers' health this topic is still of utmost importance in travel medicine. A wide spectrum of enteropathogens can be accountable, with enterotoxigenic Escherichia coli being the major causing pathogen among other bacteria, parasites and viruses. Here we discuss advantages and disadvantages of different prophylactic measures against travellers' diarrhoea. The effectiveness but also the relevance of hygiene education, vaccination and antibiotic or probiotic application will be discussed in the context of the travellers' different risk profiles. PMID:19915810

Wagner, Angelika; Wiedermann, Ursula



Pro/con ethics debate: When is dead really dead?  

PubMed Central

Contemporary intensive care unit (ICU) medicine has complicated the issue of what constitutes death in a life support environment. Not only is the distinction between sapient life and prolongation of vital signs blurred but the concept of death itself has been made more complex. The demand for organs to facilitate transplantation promotes a strong incentive to define clinical death in a manner that most effectively supplies that demand. We consider the problem of defining death in the ICU as a function of viable organ availability for transplantation PMID:16356234

Whetstine, Leslie; Streat, Stephen; Darwin, Mike; Crippen, David



Examinando algunas disyuntivas de política económica con un modelo estructural  

Microsoft Academic Search

En este documento se intenta dar respuesta, mediante el empleo de un modelo estructural, a tres tipos de interrogantes: las implicancias de una mejora en los procesos productivos, los efectos de un cambio en los niveles de endeudamiento público y los costos en términos del producto de un cambio en la tasa de inflación objetivo. Las simulaciones que arroja el

Luis Gonzalo Llosa Velásquez



Experimentar con un cohete de plasma - Duration: 2:50.  

NASA Video Gallery

El Dr. Franklin Chang-Díaz, el primer astronauta hispano de la NASA, es actualmente el presidente y CEO de Ad Astra Rocket Company, la empresa que desarrolla el nuevo cohete de plasma VASIMR. Apren...


9 CFR 319.300 - Chili con carne.  

Code of Federal Regulations, 2014 CFR

...Mechanically Separated (Species) may be used in accordance with § 319.6. Head meat, cheek meat, and heart meat exclusive of the heart cap may be used to the extent of 25 percent of the meat ingredients under specific declaration on the...



9 CFR 319.301 - Chili con carne with beans.  

Code of Federal Regulations, 2014 CFR

...Mechanically Separated (Species) may be used in accordance with § 319.6. Head meat, cheek meat, or heart meat exclusive of the heart cap may be used to the extent of 25 percent of the meat ingredients, and its presence shall be...



9 CFR 319.300 - Chili con carne.  

Code of Federal Regulations, 2011 CFR

...Mechanically Separated (Species) may be used in accordance with § 319.6. Head meat, cheek meat, and heart meat exclusive of the heart cap may be used to the extent of 25 percent of the meat ingredients under specific declaration on the...



Control de la congestión vehicular en Bogotá con herramientas microeconómicas  

Microsoft Academic Search

A partir de un diagnóstico de la congestión que las causas del problema van más allá de un exceso de vehículos y una falta de vías. Se estudian cuatro alternativas para reducir la congestión: la restricción de circulación por placas, el cobro por entrar en una zona de la ciudad, una política de parqueo y la creación de un nuevo

Arturo Ardila Gómez



Encompassing Sexual Medicine within Psychiatry: Pros and Cons  

ERIC Educational Resources Information Center

Objective: This article examines the positive and negative aspects of psychiatry encompassing sexual medicine within its purview. Methods: MEDLINE searches for the period between 1980 to the present were performed with the terms "psychiatry," "sexual medicine," and "sexual dysfunction." In addition, sexual medicine texts were reviewed for chapters…

Segraves, Robert Taylor



here's no end to the number of scams con-  

E-print Network

stress man- agement isn't about relaxation, better eat- ing, getting a massage, or practicing yoga. The best stress management strategy might be a better way to solve a stressful problem. Here's a problem-solving for- mula to apply to the root of a problem you face that causes stress: 1) Define the problem; 2

Kim, Duck O.


Strategic vision or strategic con?: Rhetoric or reality?  


Major companies devote considerable effort to communicating corporate visions and missions. Yet three recent surveys suggest that much of this effort has been counter-productive. A gap has emerged between rhetoric and reality. Arenas of confrontation have arisen between directors and managers, head offices and business units, holding companies and their subsidiaries, and between specialists and generalists. A widespread desire for corporate transformation is not matched by understanding of how to bring it about. The lack of top management commitment and of communication skills are major barriers to change. More competent directors and more effective boards are needed. The article suggests key roles for the chairman and the chief executive. It examines how best to share a compelling vision, and identifies a requirement for new attitudes and approaches to communication. PMID:10118382

Coulson-Thomas, C



Astrobiological aspects of Mars and human presence: pros and cons.  


After the realization of the International Space Station, human exploratory missions to Moon or Mars, i.e. beyond low Earth orbit, are widely considered as the next logical step of peaceful cooperation in space on a global scale. Besides the human desire to extend the window of habitability, human exploratory missions are driven by several aspects of science, technology, culture and economy. Mars is currently considered as a major target in the search for life beyond the Earth. Understanding the history of water on Mars appears to be one of the clues to the puzzle on the probability of life on Mars. On Earth microorganisms have flourished for more than 3.5 Ga and have developed strategies to cope with so-called extreme conditions (e.g., hot vents, permafrost, subsurface regions, rocks or salt crystals). Therefore, in search for life on Mars, microorganisms are the most likely candidates for a putative biota on Mars and the search for morphological or chemical signatures of life or its relics is one of the primary and most exciting goals of Mars exploration. The presence of humans on the surface of Mars will substantially increase this research potential, e.g., by supporting deep subsurface drilling and by allowing intellectual collection and sophisticated in situ analysis of samples of astrobiological interest. On the other hand, such long-duration missions beyond LEO will add a new dimension to human space flight, concerning the distance of travel, the radiation environment, the gravity levels, the duration of the mission, and the level of confinement and isolation the crew will be exposed to. This will raise the significance of several health issues, above all radiation protection, gravity related effects as well as psychological issues. Furthermore, the import of internal and external microorganisms inevitably accompanying any human mission to Mars, or brought purposely to Mars as part of a bioregenerative life support system needs careful consideration with regard to planetary protection issues. Therefore, before planning any human exploratory mission, the critical issues concerning human health and wellbeing as well as protection of Mars in its pristine condition need to be investigated. PMID:19048093

Horneck, G



The pros and cons of using irradiation for phytosanitary treatments  

Technology Transfer Automated Retrieval System (TEKTRAN)

Irradiation is increasingly being used as a phytosanitary treatment in Asia, Australia and the Americas, but the process is not being used or promoted in the European Union. However, under the current regulatory framework it is possible for food commodities irradiated to prevent the spread of alien...


iCons, 2011 Top 10 Scientific Achievements: Lesson Plan  

E-print Network

by negative (i.e. what's /not/ scientific). Example to help clarify might be Fire / Internal Combustion Engine.e. what's /not/ scientific). Example to help clarify might be Fire / Internal Combustion Engine

Auerbach, Scott M.


Modelli decisionali della dipendenza: simulazioni del In collaborazione con  

E-print Network

of addiction, delimited in Figure 1 by vertical dotted lines: controlled drug use, drug abuse, drug addiction, post-addiction stage. 3 #12;controlled use post-addiction stage drug addiction drug abuse Figure 1 of drug addiction is characterized by the condition of the preceding stage to which is added

Mocenni, Chiara



Technology Transfer Automated Retrieval System (TEKTRAN)

Films based on pear puree were formed using thermal compression molding. Whey protein isolates and soy protein isolates were added to these films to improve their processing and strength. The effects of pear puree concentration, whey or soy protein concentration, moisture content and sorbitol cont...


Caracterización de asfaltos con tecnología Superpave y análisis de ahuellamiento  

Microsoft Academic Search

RESUMEN: Se realiza una caracterización reológica en el Reómetro de Corte Dinámico (DSR), implementado por la nueva tecnología SUPERPAVE a muestras asfálticas procedentes de las refinerías de Apiay y Barrancabermeja, se plantea un barrido de temperaturas, frecuencias, amplitudes, En función de la rigidez del ligante a cargas cíclicas G* y a la respuesta del asfalto a recuperarse (ángulo de fase),

J. F. Suárez


Lysosomal multienzyme complex: pros and cons of working together.  


The ubiquitous distribution of lysosomes and their heterogeneous protein composition reflects the versatility of these organelles in maintaining cell homeostasis and their importance in tissue differentiation and remodeling. In lysosomes, the degradation of complex, macromolecular substrates requires the synergistic action of multiple hydrolases that usually work in a stepwise fashion. This catalytic machinery explains the existence of lysosomal enzyme complexes that can be dynamically assembled and disassembled to efficiently and quickly adapt to the pool of substrates to be processed or degraded, adding extra tiers to the regulation of the individual protein components. An example of such a complex is the one composed of three hydrolases that are ubiquitously but differentially expressed: the serine carboxypeptidase, protective protein/cathepsin A (PPCA), the sialidase, neuraminidase-1 (NEU1), and the glycosidase ?-galactosidase (?-GAL). Next to this 'core' complex, the existence of sub-complexes, which may contain additional components, and function at the cell surface or extracellularly, suggests as yet unexplored functions of these enzymes. Here we review how studies of basic biological processes in the mouse models of three lysosomal storage disorders, galactosialidosis, sialidosis, and GM1-gangliosidosis, revealed new and unexpected roles for the three respective affected enzymes, Ppca, Neu1, and ?-Gal, that go beyond their canonical degradative activities. These findings have broadened our perspective on their functions and may pave the way for the development of new therapies for these lysosomal storage disorders. PMID:24337808

Bonten, Erik J; Annunziata, Ida; d'Azzo, Alessandra



ornl ORNL/CON-63 Design Optimization and the Limits  

E-print Network

.7 Recommendations .................... 2-8, 3. MODELING AND OPTIMIZATION APPROACH FOR CONVENTIONAL VAPOR COMPRESSION Motor Sizing ................ 2-7 2.6 Comparison with Ideal Cycle Efficiencies ....... 2-7 2 CYCLES .................. 3-1 3.1 The ORNL Heat Pump Model ............... 3-1 3.1.1 General

Oak Ridge National Laboratory