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Bruker X-ray

Mi Li, Yuanyuan Tang, Nana Ren, Zuotai Zhang, Yiming Cao
This dataset is the supplementary data for the summited research article Li et al., 2017 [1] and provides detailed data profiles to support the explication about mineral constituents' effect on temperature-dependent structural characterization of carbon fractions in sewage sludge-derived biochar. The elemental compositions of major inorganics in the sewage sludge were detected by X-ray fluorescence spectrometry (XRF, S2-Ranger, Bruker).The images from scanning electron microscope (SEM) were compared between unwashed and acid-washed samples, and revealed the effect of acid washing on the surface morphology and porosity of sewage sludge and the biochar...
April 2018: Data in Brief
Pia Baumgart, Holger Kirsten, Rainer Haak, Constanze Olms
BACKGROUND: Implant and superstructure provide a complex system, which has to withstand oral conditions. Concerning the brittleness of many ceramics, fractures are a greatly feared issue. Therefore, polymer-infiltrated ceramic networks (PICNs) were developed. Because of its low Young's modulus and high elastic modulus, the PICN crown on a one-piece zirconia implant might absorb forces to prevent the system from fracturing in order to sustain oral forces. Recommendations for the material of superstructure on zirconia implants are lacking, and only one study investigates PICN crowns on these types of implants...
May 23, 2018: International Journal of Implant Dentistry
Sang Hee Ahn, Nohyun Lee, Changhoon Choi, Sung Won Shin, Youngyih Han, Hee Chul Park
We investigated the feasibility of using multifunctional Fe3O4/TaOx (core/shell) nanoparticles, developed for use in contrast agents for computed tomography (CT) and magnetic resonance imaging (MRI), as dose-enhancing radiosensitizers. First, to verify the detectability of Fe3O4/TaOx nanoparticles in imaging, in vivo tests were conducted. Approximately 600 mg/kg of 19-nm-diameter Fe3O4/TaOx nanoparticles dispersed in phosphate-buffered saline was injected into the tail vein of six Balb/c mice used as tumour (4T1 mammary carcinoma cell) models...
May 4, 2018: Physics in Medicine and Biology
Gerhard Fritz-Popovski, Sabine C Bodner, Florentyna Sosada-Ludwikowska, Günther A Maier, Roland Morak, Livia Chitu, Lutz Bruegemann, Joachim Lange, Hans-Georg Krane, Oskar Paris
A heating stage originally designed for diffraction experiments is implemented into a Bruker NANOSTAR instrument for in situ grazing incidence small-angle x-ray scattering experiments. A controlled atmosphere is provided by a dome separating the sample environment from the evacuated scattering instrument. This dome is double shelled in order to enable cooling water to flow through it. A mesoporous silica film templated by a self-assembled block copolymer system is investigated in situ during step-wise heating in air...
March 2018: Review of Scientific Instruments
Bartosz Leszczyński, Paulina Sojka-Leszczyńska, Dorota Wojtysiak, Andrzej Wróbel, Roman Pędrys
The aim of our study is to obtain, as accurately as possible, porcine ocular tissue visualization using microtomography (micro-CT) method. We propose image contrast enhancement by different staining procedures with combination of micro-CT scanning. Porcine eye globes were investigated with Bruker-SkyScan 1172 micro-CT. We used 4F1G and Bouin's as sample fixation solutions and tincture of iodine, 100% Lugol, phosphotungstic acid and 1% osmium tetroxide solutions for staining. Quantitative and qualitative analysis was performed based on micro-CT reconstruction images histograms and 3D volume rendering models of investigated samples...
February 2018: Experimental Eye Research
Adam J Brooks, Zhongwen Yao
The data presented in this article is related to the research experiment, titled: 'Quasi in-situ energy dispersive X-ray spectroscopy observation of matrix and solute interactions on Y-Ti-O oxide particles in an austenitic stainless steel under 1 MeV Kr(2+) high temperature irradiation' (Brooks et al., 2017) [1]. Quasi in-situ analysis during 1 MeV Kr(2+) 520 °C irradiation allowed the same microstructural area to be observed using a transmission electron microscope (TEM), on an oxide dispersion strengthened (ODS) austenitic stainless steel sample...
October 2017: Data in Brief
A V Kustov, A I Strelnikov, P R Smirnov, S V Gusakova, M A Moryganov, S R Toms, S I Gruzdev, A O Airapetyan
This paper focuses on developing and implementing a method of quantitative mineralogical analysis of urinary stones based on powder diffraction data analysis using 4 Topas (Bruker) software. Mineralogical composition of 100 urinary stones from urolithiasis patients living in Ivanovo region was examined. More than 70% of stones consisted of calcium oxalate monohydrate (COM) and calcium oxalate dihydrate (COD), and their mixtures with hydroxylapatite. Forty four percent of urinary stones consisted of one component (COM, uric acid (UA) or, less frequently, hydroxyapatite (HA); 56% of urinary stones comprised two, three or four components...
August 2016: Urologii︠a︡
Anders Palmquist, Furqan A Shah, Lena Emanuelsson, Omar Omar, Felicia Suska
This paper investigates the application of X-ray micro-computed tomography (micro-CT) to accurately evaluate bone formation within 3D printed, porous Ti6Al4V implants manufactured using Electron Beam Melting (EBM), retrieved after six months of healing in sheep femur and tibia. All samples were scanned twice (i.e., before and after resin embedding), using fast, low-resolution scans (Skyscan 1172; Bruker micro-CT, Kontich, Belgium), and were analysed by 2D and 3D morphometry. The main questions posed were: (i) Can low resolution, fast scans provide morphometric data of bone formed inside (and around) metal implants with a complex, open-pore architecture?, (ii) Can micro-CT be used to accurately quantify both the bone area (BA) and bone-implant contact (BIC)?, (iii) What degree of error is introduced in the quantitative data by varying the threshold values?, and (iv) Does resin embedding influence the accuracy of the analysis? To validate the accuracy of micro-CT measurements, each data set was correlated with a corresponding centrally cut histological section...
March 2017: Micron: the International Research and Review Journal for Microscopy
Eduardo Inocente Jussiani, Paulo José Dos Reis, Carlos Roberto Appoloni
X-ray microtomography is a 3D non-destructive method which, through digital images, enables a view of the internal structure of samples. Recently, researchers have been extensively performing various methods in the attempt to determine the chemical composition of materials. This paper brings further insight into this matter and proposes a new experimental method for determining the internal chemical composition of samples. Using a set of standard samples, calibration curves can be created that allow to relate the average gray scale of a sample obtained through microtomographic images to the value of ρZeff(m)...
October 2016: Micron: the International Research and Review Journal for Microscopy
Victoria Gómez-Murcia, Alejandro Torrecillas, Ana M deGodos, Senena Corbalán-García, Juan C Gómez-Fernández
Here we present some of our data about the interaction of idebenone and idebenol with dipalmitoyl-phosphatidylcholine (DPPC). In particular, we include data of small angle X-ray diffraction (SAXD) and wide angle X-ray diffraction experiments, obtention of electronic profiles of the membranes, (2)H-NMR and (31)P-NMR, as part of the research article: "Both idebenone and idebenol are localized near the lipid-water interface of the membrane and increase its fluidity" (Gomez-Murcia et al., 2016) [1]. These data were obtained from model membranes that included different proportions of idebenone and idebenol, at temperatures both above and below of the gel to fluid phase...
June 2016: Data in Brief
Oana Carmen Drăgan, Alexandru Ştefan Fărcăşanu, Radu Septimiu Câmpian, Romulus Valeriu Flaviu Turcu
BACKGROUND AND AIMS: Visualization of the internal and external root canal morphology is very important for a successful endodontic treatment; however, it seems to be difficult considering the small size of the tooth and the complexity of the root canal system. Film-based or digital conventional radiographic techniques as well as cone beam computed tomography provide limited information on the dental pulp anatomy or have harmful effects. A new non-invasive diagnosis tool is magnetic resonance imaging, due to its ability of imaging both hard and soft tissues...
2016: Clujul Medical (1957)
Alexandra Figueiredo, Tânia Fernandes, Isabel Margarida Costa, Luísa Gonçalves, José Brito
The aim of this study was to investigate the feasibility of Wavelength Dispersive X-ray Fluorescence (WDXRF) spectrometry for the measurement of As, Cd, Cr, Cu, Hg, Ir, Mn, Mo, Ni, Os, Pb, Pd, Pt, Rh, Ru and V impurities in pharmaceuticals and dietary supplements, in view of the requirements by EMA and USP for the measurement of elemental impurities in drug products and according to the International Conference on Harmonisation of Technical Requirements for Registration of Pharmaceuticals for Human Use (ICH guidelines)...
April 15, 2016: Journal of Pharmaceutical and Biomedical Analysis
Ana Grasiela da Silva Limoeiro, Antônio Henrique Braitt Dos Santos, Alexandre Sigrist De Martin, Augusto Shoji Kato, Carlos Eduardo Fontana, Giulio Gavini, Laila Gonzales Freire, Carlos Eduardo da Silveira Bueno
INTRODUCTION: Cleaning and shaping without making procedural errors have always been a challenge in endodontics, particularly when the root canals are curved. Several rotary instruments have been developed to minimize such errors. The purpose of this study was to compare the shaping ability of 2 rotary file systems, BioRace (BR; FKG, La Chaux-de-Fonds, Switzerland) and ProTaper Next (PTN; Dentsply Maillefer, Ballaigues, Switzerland), during the preparation of curved root canals in extracted teeth using micro-computed tomographic imaging...
March 2016: Journal of Endodontics
Witold Bojar, Tomasz Ciach, Martyna Kucharska, Jan Maurin, Beata M Gruber, Jolanta Krzysztoń-Russjan, Irena Bubko, Elżbieta L Anuszewska
BACKGROUND: Alloplastic biomaterials are an alternative for autologous transplants and xenografts in oral surgery and dental implantology. These non-immunogenic and resorbable materials are becoming the basis for complete and predictable guided bone regeneration in many cases. The chemical composition of a great majority of them is based on calcium phosphate salts. In vivo performance is often variable. OBJECTIVES: The objective was to evaluate the biological and chemical properties of an experimental bone substitute material...
May 2015: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
Mohd Anwar, Arvind Tripathi, Sushil Kumar Kar, K Chandra Sekhar
PURPOSE: The purpose of this study was to compare the mechanical properties of beryllium-free nickel-chromium (Ni-Cr) dental casting alloy before and after each porcelain firing cycle (once fired, twice fired, and thrice fired) and to relate these properties to the microstructural changes and changes in X-ray diffraction patterns of Ni-Cr alloy that occur after each porcelain firing cycle. MATERIAL AND METHODS: Forty tensile bar specimens and 20 disc-shaped specimens of Ni-Cr alloy were prepared...
December 2015: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
Laila Gonzales Freire, Elaine Faga Iglecias, Rodrigo Sanches Cunha, Marcelo Dos Santos, Giulio Gavini
INTRODUCTION: The aim of this study was to compare the efficacy of passive ultrasonic irrigation (PUI) and the EndoVac (EV) System (Discus Dental, Culver City, CA) in hard tissue debris removal and its influence on the quality of the root canal filling with the aid of micro-computed tomographic scanner. METHODS: Twenty-four mandibular molars were subjected to 4 microtomographic scannings (ie, before and after instrumentation, after final irrigation, and after obturation) using the SkyScan 1176 X-ray microtomograph (Bruker microCT, Kontich, Belgium) at a resolution of 17...
October 2015: Journal of Endodontics
Lennard Krause, Regine Herbst-Irmer, George M Sheldrick, Dietmar Stalke
The quality of diffraction data obtained using silver and molybdenum microsources has been compared for six model compounds with a wide range of absorption factors. The experiments were performed on two 30 W air-cooled Incoatec IµS microfocus sources with multilayer optics mounted on a Bruker D8 goniometer with a SMART APEX II CCD detector. All data were analysed, processed and refined using standard Bruker software. The results show that Ag Kα radiation can be beneficial when heavy elements are involved...
February 1, 2015: Journal of Applied Crystallography
R Bakirova, S Fasylov, O Nurkenov, L Muravlyova, A Gakupova
Studying of synthesis and anti-inflammatory activity of a number of new derivatives of N-acylsubstituted of thiosemicarbazide and product of their heterocyclization (thiadiazole). In work the following reagents are used: hydrazide of N-morfolinilacetic acids, allil-, benzoil-, 4-brom-benzoil isothiocyanates. IR spectrums of compounds are removed on a spectrometer from Fourier converter by "AVATAR-320" in tablets with KBr, 1H NMR spectra were recorded on Bruker DRX500 spectrometer with a frequency of 500 MHz in DMSO-d6 solution relative to internal tetramethylsilane standard...
March 2015: Georgian Medical News
Adam Round, Franck Felisaz, Lukas Fodinger, Alexandre Gobbo, Julien Huet, Cyril Villard, Clement E Blanchet, Petra Pernot, Sean McSweeney, Manfred Roessle, Dmitri I Svergun, Florent Cipriani
Small-angle X-ray scattering (SAXS) of macromolecules in solution is in increasing demand by an ever more diverse research community, both academic and industrial. To better serve user needs, and to allow automated and high-throughput operation, a sample changer (BioSAXS Sample Changer) that is able to perform unattended measurements of up to several hundred samples per day has been developed. The Sample Changer is able to handle and expose sample volumes of down to 5 µl with a measurement/cleaning cycle of under 1 min...
January 1, 2015: Acta Crystallographica. Section D, Biological Crystallography
Eduardo Inocente Jussiani, Carlos Roberto Appoloni
Microtomography, as a non-destructive technique, has become an important tool in studies of internal properties of materials. Recently, interest using this methodology in characterizing the samples with respect to their compositions, especially rocks, has grown. Two physical properties, density and effective atomic number, are important in determining the composition of rocks. In this work, six samples of materials with densities that varied from 2.42 to 6.84g/cm(3) and effective atomic numbers from 15.0 to 77...
March 2015: Micron: the International Research and Review Journal for Microscopy
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