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V Simon et al.
Journal of materials science. Materials in medicine, 18(3), 507-512 (2007-03-06)
Quaternary Ag(2)O-CaO-Bi(2)O(3)-B(2)O(3) glasses and glassceramics are investigated with regard to release behaviour and local structure. The dissolution behaviour in water and physiological serum shows that the cations are released rapidly or gradually and points out a multi-step process, generally characterised
Noelio O Dantas et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 81(1), 140-143 (2011-07-19)
The structural properties of the glass matrix 40SiO(2)·30Na(2)O·1Al(2)O(3)·(29-x)B(2)O(3)·xFe(2)O(3) (mol%), 0.0≤x≤29.0 were studied by X-ray diffraction (XRD), differential thermal analysis (DTA) and Raman and infrared spectroscopy (FT-IR). XRD demonstrated Fe(3)O(4) crystal formation for Fe(2)O(3) concentrations of 29.0 mol%. DTA showed that
T D Tho et al.
The European physical journal. E, Soft matter, 35(1), 8-8 (2012-01-31)
To investigate the influence of cation mobility variation due to the mixed glass former effect, 0.45Li(2)O-(0.55-x)P(2)O(5)-xB(2)O(3) glasses (0≤x≤0.55) are studied keeping the molar ratio of Li(2)O/(P(2)O(5)+B(2)O(3)) constant. Addition of B(2)O(3) into lithium phosphate glasses increases the glass transition temperature (T(g))
T Raghavendra Rao et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 79(5), 1116-1122 (2011-06-10)
Optical and physical properties of Ni2+ doped 20ZnO+xLi2O+(30-x)Na2O+50B2O3 (5≤x≤25) glasses are carried out at room temperature. Powder XRD pattern of all the glass samples confirms the amorphous nature. Several physical parameters are evaluated for all the glasses with respect to
Pratik Koirala et al.
The journal of physical chemistry. A, 117(6), 1310-1318 (2012-11-03)
Using density functional theory based calculations, we have systematically studied the equilibrium geometries, relative stabilities, and electronic and magnetic properties of Fe and Mn atoms interacting with a varying number of BO(2) moieties. These clusters are found to exhibit hyperhalogen
Roger F Brown et al.
Journal of biomedical materials research. Part A, 88(2), 392-400 (2008-02-29)
Glasses containing varying amounts of B(2)O(3) were prepared by partially or fully replacing the SiO(2) in silicate 45S5 bioactive glass with B(2)O(3). The effects of the B(2)O(3) content of the glass on its conversion to hydroxyapatite (HA) and on the
Crystallization of gels and glasses made from hot-pressed gels.
Phalippou J, et al.
Journal of Non-Crystalline Solids, 48(1), 17-30 (1982)
Xiaofeng Liu et al.
Chemical communications (Cambridge, England), (27)(27), 4073-4075 (2009-07-02)
A facile strategy based on the reaction of urea and boric acid is developed for the synthesis of toxicity-free BCNO nanocrystals containing carbon impurities and which exhibit efficient multi-color fluorescence under both single-photon and two-photon excitation.
Facile synthesis of metal free non-toxic Boron Carbon Nitride nanosheets with strong photocatalytic behavior for degradation of industrial dyes
Sivaprakash K, et al.
Mat. Res. Bul., 100, 13-321 (2018)
Yinling Wang et al.
Analytical biochemistry, 385(1), 184-186 (2008-11-27)
Glassy carbon electrode modified with boron oxide nanoparticles supported on multiwall carbon nanotubes was obtained via a facile approach. The as-prepared modified electrode exhibits excellent electrocatalytic activity toward the redox of glucose in pH 7.0 phosphate buffer solution. The electrochemical
Laurie P Volak et al.
Drug metabolism and disposition: the biological fate of chemicals, 36(8), 1594-1605 (2008-05-16)
Curcuminoid extract and piperine are being evaluated for beneficial effects in Alzheimer's disease, among other intractable disorders. Consequently, we studied the potential for herb-drug interactions involving cytochrome P450 (P450), UDP-glucuronosyltransferase (UGT), and sulfotransferase (SULT) enzymes. The curcuminoid extract inhibited SULT
Elena A Khokhlova et al.
ChemSusChem, 5(4), 783-789 (2012-02-24)
The mechanistic nature of the conversion of carbohydrates to the sustainable platform chemical 5-hydroxymethylfurfural (5-HMF) was revealed at the molecular level. A detailed study of the key sugar units involved in the biomass conversion process has shown that the simple
Palladium-catalyzed stereospecific substitution of alpha,beta-unsaturated gamma,delta-epoxy esters by alcohols with double inversion of configuration: synthesis of 4-alkoxy-5-hydroxy-2-pentenoates.
Xiao-Qiang Yu et al.
Angewandte Chemie (International ed. in English), 47(4), 750-754 (2007-12-12)
K Srinivasulu et al.
The journal of physical chemistry. A, 116(14), 3547-3555 (2012-03-14)
Electron paramagnetic resonance (EPR), optical absorption, and FT-IR spectra of vanadyl ions in the sodium-lead borophosphate (Na(2)O-PbO-B(2)O(3)-P(2)O(5)) (SLBP) glass system have been studied. EPR spectra of all the glass samples exhibit resonance signals characteristic of VO(2+) ions. The spin Hamiltonian
Orhan Murat Kalfa et al.
Journal of hazardous materials, 166(1), 455-461 (2009-01-13)
A new solid phase extractor, nano-scale diboron trioxide/titanium dioxide composite material, was synthesized and used for separation and/or preconcentration of trace cadmium ion from various samples. The characterization of the synthesized material was performed by scanning electron microscope (SEM), transmission
Minh Tho Nguyen et al.
The journal of physical chemistry. A, 113(17), 4895-4909 (2009-04-01)
Thermochemical properties of a set of small boron (B(n)) and boron oxide (B(n)O(m)) clusters, with n = 1-4 and m = 0-3, their anions, and the B(4)(2-) dianion, were calculated by using coupled-cluster theory CCSD(T) calculations with the aug-cc-pVnZ (n
Z. Sulcek et al.
Methods of Decomposition in Inorganic Analysis (1989)
C Nageswara Raju et al.
Luminescence : the journal of biological and chemical luminescence, 27(5), 334-340 (2011-09-21)
This article reports on the optical properties of Er3+ ions doped CdO-Bi2O3-B2O3 (CdBiB) glasses. The materials were characterized by optical absorption and emission spectra. By using Judd-Ofelt theory, the intensity parameters Ω(λ) (λ = 2, 4, 6) and also oscillatory strengths were
Jae Hyup Lee et al.
Drug and chemical toxicology, 33(1), 38-47 (2009-12-10)
CaO-SiO(2)-P(2)O(5)-B(2)O(3) glass ceramics directly bond to bone and have potential use as a bone substitute material. The present study evaluated the toxicity from subchronic intravenous administration of CaO-SiO(2)-P(2)O(5)-B(2)O(3) glass ceramics to male and female Sprague-Dawley rats. The rats were divided
Xinyong Tao et al.
Nano letters, 8(2), 505-510 (2008-01-09)
Mg2B2O5 nanowires with (010) twins were synthesized for the first time using a catalyst-free method. The microstructure of the Mg2B2O5 nanowires has been extensively studied by cross-sectional high-resolution transmission electron microscopy. Nanoindentation tests were performed directly on individual nanowires to
S O Hruszkewycz et al.
Physical review letters, 109(18), 185502-185502 (2012-12-12)
The availability of ultrafast pulses of coherent hard x rays from the Linac Coherent Light Source opens new opportunities for studies of atomic-scale dynamics in amorphous materials. Here, we show that single ultrafast coherent x-ray pulses can be used to
Anne Soleilhavoup et al.
Magnetic resonance in chemistry : MRC, 48 Suppl 1, S159-S170 (2010-09-08)
Boron-11 and silicon-29 NMR spectra of xSiO(2)-(1-x)B(2)O(3) glasses (x=0.40, 0.80 and 0.83) have been calculated using a combination of molecular dynamics (MD) simulations with density functional theory (DFT) calculations of NMR parameters. Structure models of 200 atoms have been generated
Jin-Su Nam et al.
Journal of hazardous materials, 172(2-3), 1013-1020 (2009-08-25)
Recently, it was found by the authors of this study that glasses of a special composition have an ability to remove some hazardous ions from waste solutions. In the present study, a SiO(2)-B(2)O(3)-CaO-Na(2)O glass system has been chosen to remove
Tuning the properties of boron-doped reduced graphene oxide by altering the boron content
Ngidi Nonjabulo PD, et al.
New. J. Chem., 44(39), 16864-16876 (2020)
G Krishna Kumari et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 101, 140-147 (2012-10-27)
Divalent Mn2+ ions containing 20ZnO+xLi2O+(30-x)K2O+50B2O3(5≤x≤25) mol% glasses are prepared by using melt quench technique and are characterized by several spectroscopic techniques. Various physical parameters are evaluated from the measured values of density and refractive index for the observation of mixed
Pengyu Zhang et al.
Chemical communications (Cambridge, England), 46(22), 3988-3990 (2010-04-30)
Al-rich single-crystal mullite [Al(2)(Al(2.8)Si(1.2))O(9.6)] nanowires were prepared by B(2)O(3)-doped molten salts synthesis. The nanowires have diameters in the range 30-50 nm and typical lengths of 1 microm. The mullite nanowires were well dispersed and facile to obtain.
R. Bock
Aufschlussmethoden der anorg. & org. Chemie (1972)
Dmitry Yu Zubarev et al.
The journal of physical chemistry. A, 111(9), 1648-1658 (2007-02-15)
During experiment on Au-B alloy clusters, an auro-boron oxide cluster Au2BO- was observed to be an intense peak dominating the Au-B mass spectra, along with weaker signals for AuBO- and Au3BO-. Well-resolved photoelectron spectra have been obtained for the three
Shibayan Roy et al.
Journal of materials science. Materials in medicine, 19(9), 3123-3133 (2008-04-17)
Herein, we report the results of the in vitro dissolution tests, which were carried out by immersing the selected glass-ceramic samples in artificial saliva (AS) for various time periods of up to 42 days. In our experiments, the SiO(2)-MgO-Al(2)O(3)-K(2)O-B(2)O(3)-F glass
Ivan Hung et al.
Journal of magnetic resonance (San Diego, Calif. : 1997), 197(2), 229-236 (2009-02-10)
Using a two-dimensional multiple-quantum (MQ) double rotation (DOR) experiment the contributions of the chemical shift and quadrupolar interaction to isotropic resonance shifts can be completely separated. Spectra were acquired using a three-pulse triple-quantum z-filtered pulse sequence and subsequently sheared along
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