Terence Dudley, John Huxley, Victoria McKee, Barbara Hall, Margaret Freeman, Richard Ellis, Scritti Politti, Liam McAuliffe, Jon Swain, Graham Martin, James Lattin, Rob Hughes, John Peter, Thomas Crook, Gillian Thomas, Jonathan Miller, Roger Ely, Sarah Miller, Christopher Smallwood Economics Editor, Sir Denis Hamilton, Jacqueline Warren, Dirty Harry, John Jay, Michael Leach, Danby Bloch, John Diamond, Victor Ross, Graham Rose, Alistair Scott, Ian Williams Business Correspondent, Stephen Milligan, Julian Symons, Marten Julian, S McCluskie General Secretary, Jason Tomas, William Chappell, Mark Hosenball, Carol Rumens, Edward Welsh, Suzanne O'Farrell, Anwar Iqbal, Caroline St John-Brooks, Jon Craig, Judi Bevan Deputy City Editor, Patrick Stoddart, Susan Marling, Robert Sandall, Alex Sutherland, Jack Mercer, Iain Johnstone, David Brierley, Irwin Stelzer, Bernard Levin, Peter Godwin, Robert Hewison, Mick Brown, Ivan Fallon, David Dougill, Philip Knightley, Julian Desborough, Joe Irving, Barry Lewis, Cliff Temple, Jane Bird, Venetia Murray, Helene Hanff, Maria Laura Avignolo, Egon Ronay, Jean-Michael, Susan Crosland, Nicky Maitlis, Peter Kemp, Adrianne Blue, Norman Harris, Paul Allen, Richard Robinson, Talveen Singh, Geoff Whitten, Anne Moffat, Peter Ackroyd, David Herman, Des O'Sullivan, George Perry, Sue Mott, Rose Shepherd, John Cassidy, Christine Toomey, Bernard Cafferty, Brian Moynahan, Richard Feynman, Michael Watts, Jon Freeman, Paul Donovan, Fabienne Smith, Miles Davis, Amit Roy, William Shawcross, Angela Newing, Conor Cruise O'Brien, Paul Driver, Boris Schapiro, David Hughes, George Andronov Head of Science, Austin MacCurtain, Tim Rayment, Jon Futrell, Clive Porter, Sir Lawrence Gowing, Elizabeth Grice, David Lawrenson, John Hopkins, Brian Sewell, Askold Krushelnycky, Martin Jacques, Richard Adams, Judi Bevan, Brian Walden, Eric Marsden, Peter Wilsher, Gill Charlton, Gareth David, Brian Reading, Peter Sherlock, Simon Freeman, Stephen Pile, Michele Elliott Director, Richard Cook, Marie Colvin, Margaret Forster, Stephen Jones, Michel Syrett, Brian Deer, Richard Palmer, Raymond Godfrey, Andrew Grice, Clive Boursnell, Keith Wheatley, Nick Rufford Science Correspondent, Miranda Seymour, Patrick Rowley, Brian Blissett District General Manager, Dilys Powell, Stephen Davis, John Masterson, Pamela Duveen, Bryan Appleyard, Kevin Sullivan, Brough Scott, Gavin Laird, Deyan Sudjic, Norman Stone, Richard Woods, David Profumo, Louise Branson, George Ace, Maurice Chittenden, Ian Dunning, Robert Kiener, Felix Aprahamian, Kieran Daly, Carole Stewart, Brian MacArthur, Michael Jones Political Editor, Leonard Pearcey, Ian Thomson, Godfrey Smith, Nicholas Kochan, John D Isherwood, Jonathan Rolls, Marcel Stellman, Brian Glanville, Angus Roxburgh, Carmel McQuaid, Georgina Howell, Edward Pearce, Kevin Harrison, David Sinclair, Simon Jenkins, Godfrey Golzen, Jon Craig Home Affairs Correspondent, Marina Varizey, George Steiner, Ian Williams, Valerie Grove, Chris Lightbown, Hugh Pearman, Paul Pickering, Marina Vaizey, Margaret Park, Angela Long, Phillip Knightley, Julia McKenzie, Dorothy Wade, Penny Perrick, Tony Hetherington, Roma Felstein, Dr Slawoj Szynkiewicz, James Neilson, Richard Bate Senior Planner, Nigel Nicolson, Muriel Bowen, Mark Wallington,
... Black & Decker National Savings Held up for a hap'orth of tar Hitler chiefs' backdoor bid to ... most out of profits Tax wisdom not as sharp in hindsight Questions of Cash Options for Taking £ ...
1988 - Gale Group | Sunday Times HA GDA
Michio Homma, Kazuhiro Kutsukake, T Iino, Shigeru Yamaguchi,
... mutants showed that hooks which contained all three HAPs had a sharp clawlike tip, whereas hooks lacking any HAP had a flat tip. Electron micrographs of hooks ...
Tópico(s): Glycosylation and Glycoproteins Research
1984 - American Society for Microbiology | Journal of Bacteriology
Takayuki Nonoyama, Susumu Wada, Ryuji Kiyama, Nobuto Kitamura, Md. Tariful Islam Mredha, Xi Zhang, Takayuki Kurokawa, Tasuku Nakajima, Yasuaki Takagi, Kazunori Yasuda, Jian Ping Gong,
... HAp layer.10 In the latter case, the HAp layer forms sharp interface with bone. Thus, the DN gel containing HAp nanocrystals showed high osteointegration as a result of ...
Tópico(s): Silk-based biomaterials and applications
2016 - | Advanced Materials
Xiaolan Zhao, Wangsuo Wu, Duoqiang Pan, Hanyu Wu,
... incorporation and precipitation controlled together. However, for nano-HAP, the sharp increase of Ni(II) adsorption and ionic strength dependent at pH 6.5 to 9.0 revealed that the dominant mechanisms were ionic exchange and inner-sphere complexation. XRD results showed that characteristic peaks of cassidyite appeared in Ni(II)-loading nano-HAP. At [Formula: see text], a precipitate of Ni( ...
Tópico(s): Extraction and Separation Processes
2022 - SAGE Publishing | Adsorption Science & Technology
Serdar Acar, Omer Kaygılı, Tankut Ateş, Sergey V. Dorozhkin, Niyazi Bulut, Burhan Ateş, Süleyman Köytepe, Filiz Ercan, Hanifi Kebiroglu, Ala Hamd Hssain,
... amounts of Yb added to the Ce-based HAp structure was observed from the theoretical investigations. A sharp decrease in the cell viability of the Ce-based HAp was observed with the addition of Yb.
Tópico(s): Dental materials and restorations
2021 - Elsevier BV | Materials Chemistry and Physics
Christopher J. Schlicksup, Joseph Che‐Yen Wang, Samson Francis, Balasubramanian Venkatakrishnan, William W. Turner, Michael S. VanNieuwenhze, Adam Zlotnick,
... bound cooperatively. Using cryo-EM, we observed that HAP-TAMRA asymmetrically deformed capsids, creating a heterogeneous array of sharp angles, flat regions, and outright breaks. To achieve high resolution reconstruction (<4 Å), we introduced a disulfide crosslink that rescued particle symmetry. We deduced that HAP-TAMRA caused quasi-sixfold vertices to become flatter ...
Tópico(s): Bacteriophages and microbial interactions
2018 - eLife Sciences Publications Ltd | eLife
... Triton and 1% digitonin. The majority of Vrg4-HAp prepared from digitonin extracts was recovered in a sharp, symmetrical peak. No material of a lower molecular ...
Tópico(s): Fungal and yeast genetics research
2000 - Elsevier BV | Journal of Biological Chemistry
Suhair Omar, Mimi Suliza Muhamad, Lee Te Chuan, Nurul Nadia Rudi, Nuramidah Hamidon, Nor Hazren Abdul Hamid, Abdul Hamid, Hasnida Harun, Norshuhaila Mohamed Sunar, Roslinda Ali,
... slightly greater than the stoichiometric ratio of pure HAp at 1.67.XRD analysis reveals sharp diffraction lines that indicate the crystallinity of HAp adsorbent.Batch adsorption experiment recorded maximum Pb removal ...
Tópico(s): Recycling and Waste Management Techniques
2020 - | International Journal of Emerging Trends in Engineering Research
Denise Bogdanski, Matthias Epple, S. A. Esenwein, G. Muhr, V. Petzoldt, Oleg Prymak, Klaus Weinert, Manfred Köller,
... coated with calcium phosphate (octacalcium phosphate + hydroxyapatite; OCP/HAP) from an supersaturated aqueous solution, consisting of a dense layer of sharp-edged platelets; NiTi coated with calcium phosphate (hydroxyapatite) ...
Tópico(s): Dental materials and restorations
2004 - Elsevier BV | Materials Science and Engineering A
H. Tohda, M. Okazaki, T. Yanagisawa, J. Takahashi,
... month, the fluorapatite-covered H-FAp maintained its sharp corners, while the hydroxyapatite-covered F-HAp showed rounded corners.
Tópico(s): Dental materials and restorations
1995 - Elsevier BV | Biomaterials
N. Meenakshi Sundaram, N. Rajendran,
... quite a low dissolution rate after an initial sharp weight loss, whereas the ciprofloxacin-loaded HAp-PCL nanocomposite film had a large weight loss ...
Tópico(s): Graphene and Nanomaterials Applications
2015 - Dove Medical Press | International Journal of Nanomedicine
Yongguang Bi, Xu-Si Xu, Shi-Ting Deng, Hong Yu, Xuewei Chen, Xuemei Liu, Hai‐Lan Huang,
... next hydroxyapatite crystals belonging to the hexagonal nano-HAP, sharp peak shape, crystallinity is good. Therefore, preparation of ...
Tópico(s): Additive Manufacturing and 3D Printing Technologies
2017 - Elsevier BV | Materials Science and Engineering A
Menghan Ma, Wei Ye, Xiaoxiang Wang,
... deposition durations revealed the morphology change of the HAp crystals in the coating film with the experimental process: from cone-like structure to hexagonal prism with sharp-angled tip, and finally turns to rod-like one with regular hexagonal cross section. It was suggested that both morphology and longitudinal length of the HAp crystals in the coating could be regulated by ...
Tópico(s): Titanium Alloys Microstructure and Properties
2008 - Elsevier BV | Materials Letters
Vijayalakshmi Varadarajan, Mayya Varsha, Keerthiga Vijayasekaran, Shinde Vaibhav Shankar,
... leaves, prickly pear fruits and grapes. The synthesized HAp nanoparticles from different green templates were characterized with FTIR, DLS, XRD, SEM analysis and their results were compared. FTIR spectrum with sharp peaks confirmed the presence of functional groups such as OH and PO43- groups in the synthesized HAp nanoparticles. Particle size analysis showed the acceptable size ...
Tópico(s): Laser-Ablation Synthesis of Nanoparticles
2020 - American Institute of Physics | AIP conference proceedings
... HAP).Although ceftazidime remains an important option for HAP treatment, its role as an effective antimicrobial agent has been compromised by the sharp increase in resistance rates over the last decade, especially in P. aeruginosa and Acinetobacter baumannii. To maintain or improve the clinical use of ceftazidime in patients with severe HAP, it will be essential to gain a thorough ...
Tópico(s): Pneumonia and Respiratory Infections
2012 - Taylor & Francis | Expert Opinion on Pharmacotherapy
Maykel González‐Torres, Ulises Merino, S. Vargas, Francisco Quintanilla, R. Rodrı́guez,
... in a controlled manner. The biomaterial was Hydroxyapatite(HAp)-based and had a controlled pore size and pore volume fraction. It was implemented externally using a sharp end and a pair of barbed rings placed ...
Tópico(s): Nanoparticle-Based Drug Delivery
2016 - Elsevier BV | Materials Science and Engineering C
I. Balać, Petar S. Uskoković, Radoslav Aleksić, Dragan Uskoković,
... fraction on the mechanical properties of a hydroxyapatite (HAp) particulate reinforced polymer (poly‐L‐lactide and collagen) matrix composite was investigated through finite‐element (FE) analysis. For cube‐shaped (near sharp and curved corners and edges) embedded particles, it was found that the maximum stress concentration factor (SCF) in the matrix decreases with an increase of the HAp particle volume fraction (PVF). The maximum stress concentration ...
Tópico(s): Additive Manufacturing and 3D Printing Technologies
2002 - Wiley | Journal of Biomedical Materials Research
Satoshi Nakamura, Hiroaki Takeda, Kimihiro Yamashita,
... substances such as the BaTiO3 ceramics exhibited a sharp peak. Although the maximum current density of 7.87 nA cm−2 for the HAp polarized at 400 °C under 1.0 kV ...
Tópico(s): Glass properties and applications
2001 - American Institute of Physics | Journal of Applied Physics
S. Sebastiammal, Arul Sigamani Lesly Fathima, Saud Alarifi, Shahid Mahboob, J. Henry, M. R. Kavipriya, Marimuthu Govindarajan, Marcello Nicoletti, Baskaralingam Vaseeharan,
... Trimethyl ammonium bromide (CTAB) and curcumin. Ag+ doped HAp nanoparticles (NPs) were prepared by the sol-gel method with a cube and rod-like morphology. Ag-HApNPs showed a sharp and well-defined diffraction peak, which possesses the ...
Tópico(s): biodegradable polymer synthesis and properties
2022 - Elsevier BV | Environmental Research
Bruce S. Keenan, NANCY C. GREGER, Anne-Marie Hedge,
... and compared by chromatography on DEAE-Sephaceland hydroxylapatite (HAP). The B/C complex bound readily to both column matrices and eluted fro each as a sharp homogeneous peak: from DEAE at 172–190 mM KC1 and from HAP at 123 mM phosphate. The W/C complex, ...
Tópico(s): Effects and risks of endocrine disrupting chemicals
1986 - Oxford University Press | The Journal of Clinical Endocrinology & Metabolism
Luz Zavala Sanchez, Paloma Fernández, Ekaterina Novitskaya, Jorge N. Díaz, Manuel Herrera, Olivia A. Graeve,
... demonstrate that strong electric fields present in the HAp lattice induce manifold levels in the electronic configuration of the ytterbium ions, due to splitting of the 4f135d1 orbitals. CL spectra of Yb2+ display a series of sharp peaks centered at 3.27, 2.98, 2. ...
Tópico(s): Solid-state spectroscopy and crystallography
2017 - Elsevier BV | Acta Materialia
Produção Nacional
Amanda Alves Barbosa, Severino Alves, Rosemairy Luciane Mendes, Ricardo Santana de Lima, Andréa de Vasconcelos Ferraz,
... whose synthesis method is simple. The Eu3+ − doped HAp was obtained through the precipitation method and the functionalization with ZnO occurred in the subsequent stage through the solid-state reaction method. The resulting material, [Ca9.5Eu0.5(PO4)6(OH)2@ZnO], was characterized by several techniques where the photoluminescence spectrum exhibited sharp peaks at the 4fN → 4fN transitions typical of Eu3+ ions, while tests with bacteria proved its antibacterial property. The crystal structure obtained by X-ray diffraction confirmed HAp as the major phase. The multifunctional HAp (HAp:[ ...
Tópico(s): Luminescence Properties of Advanced Materials
2020 - Elsevier BV | Materials Science and Engineering C
Young Jong Lee, Evert J. Elzinga, Richard J. Reeder,
... Zn concentrations. Sorption isotherms of Zn(II) on HAP at pH 5.0 and 7.3 show an initial steep slope at low Zn(II) concentrations, followed by a plateau up to [Zn] < ∼750 μM, suggesting Langmuir-type behavior. At [Zn] > 750 μM, a sharp rise in the pH 5.0 isotherm suggests ...
Tópico(s): Geochemistry and Elemental Analysis
2005 - American Chemical Society | Environmental Science & Technology
... C in argon. An increasing hardness ratio, HMM/HAP, improves the wear resistance at room temperature. At elevated temperatures, the wear resistance of the MMs depends upon the formation of a self-protecting layer of embedded AP-fragments. The tests against flint and corundum revealed an increasing wear resistance up to a critical temperature TC and a sharp decrease above TC which is lower for corundum than for flint. MMs tested against SiC show a constant low wear resistance versus temperature. An important improvement in the wear resistance is achieved by the utilization of HPs in MMCs with a hardness ratio, HHP/HAP, greater than 1.2.
Tópico(s): High-Temperature Coating Behaviors
1999 - Elsevier BV | Wear
Christian Gehrmann, Sebastián Caicedo‐Dávila, Xiangzhou Zhu, David A. Egger,
... is shown that the dynamic flexibility associated with HaPs enables the so‐called transversality , which manifests as a preference for large halide displacements perpendicular to the Pb‐Br‐Pb bonding axis. The authors find that transversality is concurrent with vibrational anharmonicity and leads to a rapid rise in the joint density of states, which is favorable for photovoltaics since this implies sharp optical absorption profiles. These findings are contrasted to the case of PbTe, a material that shares several key properties with CsPbBr 3 but cannot exhibit any transversality and, hence, is found to exhibit much wider band‐edge distributions. The authors conclude that the dynamic structural flexibility in HaPs and their unusual vibrational characteristics might not just ...
Tópico(s): Thermal Expansion and Ionic Conductivity
2022 - Wiley | Advanced Science
Süleyman Coşkun, Feza Korkusuz, Vasıf Hasırcı,
... MPa, respectively. Tensile strengths of 15% (w/w) HAp-loaded P3HB, PHBV8 and PHBV22 were 18.99, 15.44 and 11.02 MPa, respectively. For the ageing test, bone plates were incubated in phosphate-buffered saline PBS (0.1 M, pH 7.4) at 37°C and at pre-determined time points they were removed and subjected to a three-point bending test. Incubation in PBS caused a sharp decrease in the mechanical properties within the first 24 h, followed either by a gradual decrease or no change for a period of about 1 month. SEM results showed that there was no significant material erosion in the 4-week incubation period. P3HB loaded with 15% HAp appeared to yield the most suitable bone plate, ...
Tópico(s): Graphene and Nanomaterials Applications
2005 - Taylor & Francis | Journal of Biomaterials Science Polymer Edition
Xiuqiong Chen, Huiqiong Yan, Chaoling Bao, Qingmei Zhu, Zhaowen Liu, Yanshi Wen, Li ZhengYue, Tong Zhang, Qiang Lin,
... scaffolds, using the hydroxyapatite/ d ‐glucono‐δ‐lactone (HAP/GDL) complex as the gelling system. The effects of different components of alginate/polyacrylamide (Alg/PAAM) on the morphology, mechanical properties, swelling, degradability, and cytocompatibility of the hydrogel scaffolds were comparatively characterized. Experimental results showed that the as‐prepared Alg/PAAM–CS–GT composite hydrogel scaffolds exhibited sharp edges and regular 3D structures. Their pore structure ...
Tópico(s): Electrospun Nanofibers in Biomedical Applications
2021 - Wiley | Polymer Engineering and Science
Zena Hassan, Nadira Hatim, Amer A. Taqa,
... of Hydroxyapatite additives 2 %, and 5 % of dry (HAP) prepared from egg shells to the polymer. Materials and Methods: Thirty six specimens of heat cured acrylic resin and other specimens of heat cured acrylic resin with 2 % and or 5 % prepared then immersed in distilled water for 48 hours then dried for 24 hours then scratched with sharp knife and measured by FTIR spectra. Results: The ...
Tópico(s): Dental Implant Techniques and Outcomes
2014 - | Al-Rafidain dental journal/Maǧallaẗ al-rāfidayn li-ṭibb al-asnān
V. RodrÃguez-Lugo, C. Ángeles, Agustín de la Isla, V. M. Castaño,
... Si were the main chemical components of the sharp morphologies. The hydroxyapatite, whitocklite, portlandite and calcite were the crystalline phases found in each of the samples analyzed. Two different growth shapes of HAp single crystals were found using transmission electron microscopy. ...
Tópico(s): Dental materials and restorations
2015 - | International Journal of Basic and Applied Sciences
Roya Boodaghi Malidarre, İskender Akkurt, Parisa Boodaghi Malidarreh, Seher Arslankaya,
... of gamma photons with lead shields. In addition, sharp peaks are reported for Zeff curves related to the B samples which may be due to the K-edge absorption of the Ce in HAP samples. The FLUKA results are in full agreement ...
Tópico(s): Advanced X-ray and CT Imaging
2022 - Elsevier BV | Radiation Physics and Chemistry