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Equivalency of the diagnostic accuracy of the PHQ-8 and PHQ-9: a systematic review and individual participant data meta-analysis (vol 50, pg 1368, 2020)

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PSYCHOLOGICAL MEDICINE 2020年第16期50卷 2816-2816页

作者： Wu, Yin Levis, Brooke Riehm, Kira E. Saadat, Nazanin Levis, Alexander W. Azar, Marleine Rice, Danielle B. Boruff, Jill Cuijpers, Pim Gilbody, Simon Ioannidis, John P. A. Kloda, Lorie A. McMillan, Dean Patten, Scott B. Shrier, Ian Ziegelstein, Roy C. Akena, Dickens H. Arroll, Bruce Ayalon, Liat Baradaran, Hamid R. Baron, Murray Bombardier, Charles H. Butterworth, Peter Carter, Gregory Chagas, Marcos H. Chan, Juliana C. N. Cholera, Rushina Conwell, Yeates de Manvan Ginkel, Janneke M. Fann, Jesse R. Fischer, Felix H. Fung, Daniel Gelaye, Bizu Goodyear-Smith, Felicity Greeno, Catherine G. Hall, Brian J. Harrison, Patricia A. Harter, Martin Hegerl, Ulrich Hides, Leanne Hobfoll, Stevan E. Hudson, Marie Hyphantis, Thomas Inagaki, Masatoshi Jette, Nathalie Khamseh, Mohammad E. Kiely, Kim M. Kwan, Yunxin Lamers, Femke Liu, Shen-Ing Lotrakul, Manote Loureiro, Sonia R. Lowe, Bernd McGuire, Anthony Mohd-Sidik, Sherina Munhoz, Tiago N. Muramatsu, Kumiko Osorio, Flavia L. Patel, Vikram Pence, Brian W. Persoons, Philippe Picardi, Angelo Reuter, Katrin Rooney, Alasdair G. Santos, Ina S. Shaaban, Juwita Sidebottom, Abbey Simning, Adam Stafford, Lesley Sung, Sharon Tan, Pei Lin Lynnette Turner, Alyna van Weert, Henk C. White, Jennifer Whooley, Mary A. Winkley, Kirsty Yamada, Mitsuhiko Benedetti, Andrea Thombs, Brett D. [a1]Lady Davis Institute for Medical Research Jewish General Hospital Montréal Québec Canada [a2]Department of Psychiatry McGill University Montréal Québec Canada [a3]Department of Epidemiology Biostatistics and Occupational Health McGill University Montréal Québec Canada [a4]Department of Psychology McGill University Montréal Québec Canada [a5]Schulich Library of Physical Sciences Life Sciences and Engineering McGill University Montreal Quebec Canada [a6]Department of Clinical Neuro and Developmental Psychology Amsterdam Public Health Research Institute Vrije Universiteit Amsterdam the Netherlands [a7]Hull York Medical School and the Department of Health Sciences University of York Heslington York UK [a8]Department of Medicine Department of Health Research and Policy Department of Biomedical Data Science Department of Statistics Stanford University Stanford California USA [a9]Library Concordia University Montréal Québec Canada [a10]Department of Community Health Sciences University of Calgary Calgary Alberta Canada [a11]Hotchkiss Brain Institute and O’Brien Institute for Public Health University of Calgary Calgary Alberta Canada [a12]Department of Medicine Johns Hopkins University School of Medicine Baltimore Maryland USA [a13]Department of Psychiatry Makerere University College of Health Sciences Kampala Uganda [a14]Department of General Practice and Primary Health Care University of Auckland Auckland New Zealand [a15]Louis and Gabi Weisfeld School of Social Work Bar Ilan University Ramat Gan Israel [a16]Endocrine Research Center Institute of Endocrinology and Metabolism Iran University of Medical Sciences Tehran Iran [a17]Ageing Clinical & Experimental Research Team Institute of Applied Health Sciences School of Medicine Medical Sciences and Nutrition University of Aberdeen Aberdeen Scotland UK [a18]Department of Medicine McGill University Montréal Québec Canada [a19]Department of Rehabilitation Medicine University of Washington S

BackgroundItem 9 of the Patient Health Questionnaire-9 (PHQ-9) queries about thoughts of death and self-harm, but not suicidality. Although it is sometimes used to assess suicide risk, most positive responses are not associated with suicidality. The PHQ-8, which omits Item 9, is thus increasingly used in research. We assessed equivalency of total score correlations and the diagnostic accuracy to detect major depression of the PHQ-8 and *** conducted an individual patient data meta-analysis. We fit bivariate random-effects models to assess diagnostic ***16 742 participants (2097 major depression cases) from 54 studies were included. The correlation between PHQ-8 and PHQ-9 scores was 0.996 (95% confidence interval 0.996 to 0.996). The standard cutoff score of 10 for the PHQ-9 maximized sensitivity + specificity for the PHQ-8 among studies that used a semi-structured diagnostic interview reference standard (N = 27). At cutoff 10, the PHQ-8 was less sensitive by 0.02 (−0.06 to 0.00) and more specific by 0.01 (0.00 to 0.01) among those studies (N = 27), with similar results for studies that used other types of interviews (N = 27). For all 54 primary studies combined, across all cutoffs, the PHQ-8 was less sensitive than the PHQ-9 by 0.00 to 0.05 (0.03 at cutoff 10), and specificity was within 0.01 for all cutoffs (0.00 to 0.01).ConclusionsPHQ-8 and PHQ-9 total scores were similar. Sensitivity may be minimally reduced with the PHQ-8, but specificity is similar.

关键词： Depression diagnostic accuracy individual participant data meta-analysis meta-analysis PHQ-8 PHQ-9 screening systematic review

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Topological Dirac surface states and superconducting pairing correlations in PbTaSe2

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Physical Review B 2016年第24期93卷 245130-245130页

作者： Tay-Rong Chang Peng-Jen Chen Guang Bian Shin-Ming Huang Hao Zheng Titus Neupert Raman Sankar Su-Yang Xu Ilya Belopolski Guoqing Chang BaoKai Wang Fangcheng Chou Arun Bansil Horng-Tay Jeng Hsin Lin M. Zahid Hasan Department of Physics National Tsing Hua University Hsinchu 30013 Taiwan Laboratory for Topological Quantum Matter and Spectroscopy (B7) Department of Physics Princeton University Princeton New Jersey 08544 USA Department of Physics National Taiwan University Taipei 10617 Taiwan Nano Science and Technology Program Taiwan International Graduate Program Academia Sinica Taipei 11529 Taiwan and National Taiwan University Taipei 10617 Taiwan Institute of Physics Academia Sinica Taipei 11529 Taiwan Department of Physics and Astronomy University of Missouri Columbia Missouri 65211 USA Centre for Advanced 2D Materials and Graphene Research Centre National University of Singapore 6 Science Drive 2 Singapore 117546 Department of Physics National University of Singapore 2 Science Drive 3 Singapore 117542 Princeton Center for Theoretical Science Princeton University Princeton New Jersey 08544 USA Center for Condensed Matter Sciences National Taiwan University Taipei 10617 Taiwan Department of Physics Northeastern University Boston Massachusetts 02115 USA

Superconductivity in topological band structures is a platform for realizing Majorana bound states and other exotic physical phenomena such as emergent supersymmetry. This potential nourishes the search for topological materials with intrinsic superconducting instabilities, in which Cooper pairing is introduced to electrons with helical spin texture such as the Dirac surface states of topological insulators, forming a time-reversal symmetric topological superconductor on the surface. We employ first-principles calculations and angle-resolved photoemission spectroscopy experiments to reveal that PbTaSe2, a noncentrosymmetric superconductor, possesses a nonzero Z2 topological invariant and fully spin-polarized Dirac surface states. Moreover, we analyze the phonon spectrum of PbTaSe2 to show how superconductivity emerges in this compound due to a stiffening of phonons by the Pb intercalation, which diminishes a competing charge-density-wave instability. By combining our findings on the topological band structure and the superconducting electron pairing, our work establishes PbTaSe2 as a stoichiometric superconductor with topological Dirac surface states. This type of intrinsic topological Dirac superconductors holds great promise for studying aspects of topological superconductors such as Majorana zero modes.

关键词： Majorana fermions Phonons Surface states Superconductors Topological insulators Angle-resolved photoemission spectroscopy First-principles calculations GGA

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Microstructure and Thermal Conductivity of Porous Al2 O3-ZrO2 Ceramics 58th

Microstructure and Thermal Conductivity of Porous Al2 O3-ZrO...

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58th Brazilian Ceramic Conference, CBC 2014

作者： Delbrücke, Tiago Gouvêa, Rogério A. Raubach, Cristiane W. Longo, Elson Sousa, Vânia C. M.tebcheranic, Sergio Kubaski, Evaldo T. Moreira, Mário L. Jurado, Jose R. Cava, Sergio Graduate Program in Science and Materials Engineering Technology Development Center Federal University of Pelotas RS Pelotas96010-900 Brazil Laboratory of Biomaterials & Advanced Ceramics Federal University of Rio Grande do Sul RS Porto Alegre91509-900 Brazil Interdisciplinary Laboratory of Ceramic Materials Ponta Grossa State University PR Ponta Grossa84030-900 Brazil National Institute of Science and Technology of Materials in Nanotechnology Paulista State University SP Araraquara14801-907 Brazil Glass Department Institute of Glass and Ceramic Madrid28049 Spain Institute of Physics and Mathematics Federal University of Pelotas RS Pelotas96010-900 Brazil

The improvement on the development of porous ceramic materials has leaded to new technologies in thermal insulation, for example, composite materials for better performance of pressure vessels in rocket engines. Within this context, the present work aims to evaluate the ability of a refractory ceramic base alumina/zirconia through the processes of co-precipitation and replica method in an organic fiber template. The green body was burnt-out and sintered at 1200-1600°C to obtain the continuous porous ceramic fibers. In the FEG-SEM analysis, an interconnected porous structure with small grains was observed. The crystalline phases were determined by X-ray diffraction and compared to micro-Raman results regarding the crystalline structure confirms that there present in the material zirconia is composed of more than one phase. Porosity was calculated through a mercury porosimeter as 77.9%, and the Laser Flash method gave a thermal conductivity value of 1.61 K W.m−1 .K−1 for the Al2 O3-ZrO2 fibers. © 2015 Trans Tech Publications Ltd, Switzerland.

关键词： Porosity

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Analysis of the resonant behavior of FSS using matryoshka geometry

Analysis of the resonant behavior of FSS using matryoshka ge...

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SBMO/IEEE MTT-S International Conference on Microwave and Optoelectronics (IMOC)

作者： Alfrêdo Gomes Neto Jefferson C. e Silva Joabson Nogueira de Carvalho Josiel Do Nascimento Cruz Hillner De Paiva Almeida Ferreira Group of Telecom. and Applied Electromagnetism Federal Inst. of Educ. Science and Technology of Paraiba Joao Pessoa PB Brazil Post-Graduate Program in Electrical Engineering Federal University of Campina Grande Brazi Brazil Group of Telecom. and Applied Electromagnetism Federal Inst. of Educ. Science and Technology of Paraíba Brazil Post-Graduate Program in Electrical Engineering Universidade Federal de Campina Grande Campina Grande PB BR

ISBN: (纸本)9781467394932

In this paper the resonant behavior of frequency selective surfaces, FSS, using matryoshka geometry is analyzed considering polarizations x and y. The basics of the FSS using matryoshka geometry are described for usual and open cases, including an expression to estimate the first resonant frequency. Initially, the FSS with two concentric square rings is considered and its resonant behavior analyzed. Then, the resonant behavior of FSS with two rings matryoshka geometry is examined. The analysis is based on the electric current distribution obtained using the commercial software ANSYS-Designer. With a better understanding of the resonance nature in matryoshka geometry the design parameters can be better adjusted and desired frequency responses properly achieved.

关键词： Frequency selective surfaces Geometry Resonant frequency Current Frequency response Europe

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Optoelectronic Properties, Elastic Moduli and Thermoelectricity of SrAlGa： An Ab Initio Study

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Chinese Physics Letters 2014年第4期31卷 134-138页

作者： Roshan Ali G. Murtaza Y. Takagiwa R. Khenata Haleem Uddin H. Ullah S. A. Khan Department of Physics Government Post Graduate Jahanzeb College Saidu sharif Swat Pakistan Materials Modeling Lab Department of Physics Islamia College University Peshawar Department of Advanced Materials Science The University of Tokyo Japan LPQ3M Laboratory Institute of Science and Technology University of Mascara Algeria

Half-Heusler compounds are an impressive class of materials with a huge potential for different applications such as in future energy, especially in the fields of thermoelectrics and solar cells. We present ab fnitio total energy calculations within the modified Becke-Johnson generalized gradient approximation （mBJ-GGA） to obtain the physical properties of SrAlGa compounds. The structural, elastic, acoustic, electronic, chemical bonding, optical, and thermoelectric properties are calculated and compared with the available calculation data. The SrAlGa is found to be a small-band-gap （0.125-0.175 eV） material, suitable for thermoelectric applications with a relatively high Seebeck coefficient. Also, SrAIGa has the potential in the optoelectronic applications due to high optical conductivity and reflectivity in the infrared and visible region of electromagnetic spectra.

关键词： OPTOELECTRONICS THERMOELECTRICITY HEUSLER alloys -- Magnetic properties REFLECTANCE OPTICAL conductivity SEEBECK coefficient

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Traditional TCP congestion control algorithms evaluation in wired-cum-wireless networks

Traditional TCP congestion control algorithms evaluation in ...

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International Wireless Communications and Mobile Computing Conference, IWCMC

作者： M. C. Dias L. A. Caldeira A. Perkusich Post-graduate Program in Electrical Engineering - PpgEE - COPELE Federal University of Campina Grande - UFCG Campina Grande Brazil Electrical Engineering Coordination Federal Institute of Education Science and Technology of Paraíba - IFPB João Pessoa Brazil

Congestion control algorithms exist for decades to prevent package loss in intense traffic networks. Several solutions developed over the years tried to solve this problem, including the creation of new algorithms. However, hybrid wired and wireless networks, or wired-cum-wireless, common in modern days, bring new challenges to programmers and engineers who try to overcome the numerous new problems that this kind of network presents. This work carries out a performance comparison, in a wired-cum-wireless network, using TCP congestion control algorithms variants: New Reno and CUBIC. The comparison is to determine which of those algorithms performs better in several situations, like multiple disconnections caused by mobility, interference and congested links. The results showed that the CUBIC is a more stable and fair algorithm, but it has a significantly less data flow than New Reno.

关键词： Standards Interference Receivers Mobile handsets Transmitters Wireless communication Algorithm design and analysis

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Chemical changes in polyetherimide (PEI) joined by friction-based injection clinching joining (F-ICJ) technique

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AIP Conference Proceedings 2016年第1期1779卷

作者： M. Sônego A. B. Abibe J. F. dos Santos L. B. Canto S. T. Amancio-Filho 1Graduate Program in Materials Science and Engineering (PPG-CEM) Federal University of São Carlos (UFSCar) São Carlos SP Brazil 2Helmholtz-Zentrum Geesthacht Centre for Materials and Coastal Research Institute of Materials Research Materials Mechanics Solid State Joining Processes Geesthacht Germany 3Hamburg University of Technology Institute of Polymer Composites Hamburg Germany

The study of new joining technologies for multimaterial structures is motivated by the environmental friendly policy of weight reduction in the automotive industry. Friction-based Injection Clinching Joining (F-ICJ) (European Patent Application EP 14182938.2) is a new staking-based joining technique, which uses frictional heating to produce joints in an energy-efficient and fast manner. In F-ICJ a non-consumable tool applies friction and force to soften or melt and deform a polymeric stud fitted in a through hole of a joining partner. After consolidation, the deformed stud (stake) mechanically joins the partners by creating a staked joint. The thermomechanical process exposes the polymer to high temperatures (250 - 290°C) and deformation rates resulting from the combination of tool rotational speeds of 8000-12000 rpm and short joining cycles (5-10 seconds). Resulting changes in material properties can affect the global performance of the joints. This study aims to investigate the chemical changes occurred in the polymeric partner of hybrid joints on polyetherimide (PEI) and aluminum 6082-T6. Molecular weight distribution (Size-Exclusion Chromatography - SEC) and chemical structure (Fourier transform infrared spectroscopy – FTIR) analyses were performed on the base material and PEI extracted from a joint to evidence any possible chemical changes caused by frictional heating. The polymeric sample from the joint showed number-average molecular weight (Mn) 23% smaller and weight-average molecular weight (Mw) 15% smaller than the PEI base material. FTIR spectra show reduction in the intensity of phthalimide bands owing to the F-ICJ process. Therefore, these analyses identified the extension of chain scission in the PEI caused by shear and heat imposed by F-ICJ process, which are fundamental for process optimization.

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Drumhead surface states and topological nodal-line fermions in TlTaSe2

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Physical Review B 2016年第12期93卷 121113(R)-121113(R)页

作者： Guang Bian Tay-Rong Chang Hao Zheng Saavanth Velury Su-Yang Xu Titus Neupert Ching-Kai Chiu Shin-Ming Huang Daniel S. Sanchez Ilya Belopolski Nasser Alidoust Peng-Jen Chen Guoqing Chang Arun Bansil Horng-Tay Jeng Hsin Lin M. Zahid Hasan Laboratory for Topological Quantum Matter and Spectroscopy (B7) Department of Physics Princeton University Princeton New Jersey 08544 USA Department of Physics National Tsing Hua University Hsinchu 30013 Taiwan Department of Physics University of California Berkeley California 94720 USA Princeton Center for Theoretical Science Princeton University Princeton New Jersey 08544 USA Condensed Matter Theory Center Department of Physics University of Maryland College Park Maryland 20742-4111 USA Centre for Advanced 2D Materials and Graphene Research Centre National University of Singapore 6 Science Drive 2 Singapore 117546 Department of Physics National University of Singapore 2 Science Drive 3 Singapore 117542 Department of Physics National Sun Yat-Sen University Kaohsiung 80424 Taiwan Department of Physics National Taiwan University Taipei 10617 Taiwan Nano Science and Technology Program Taiwan International Graduate Program Academia Sinica Taipei 11529 Taiwan and National Taiwan University Taipei 10617 Taiwan Institute of Physics Academia Sinica Taipei 11529 Taiwan Department of Physics Northeastern University Boston Massachusetts 02115 USA

A topological nodal-line semimetal is a state of matter with one-dimensional bulk nodal lines and two-dimensional so-called drumhead surface bands. Based on first-principles calculations and an effective k·p model, we theoretically propose the existence of topological nodal-line fermions in the ternary transition-metal chalcogenide TlTaSe2. The noncentrosymmetric structure and strong spin-orbit coupling give rise to spinful nodal-line bulk states which are protected by a mirror reflection symmetry of this compound. This is remarkably distinguished from other proposed nodal-line semimetals such as Cu3NPb(Zn) in which the nodal line exists only in the limit of vanishing spin-orbit coupling and thus is not as robust. In addition, we show that the drumhead surface states in TlTaSe2, which are associated with the topological nodal lines, exhibit an unconventional chiral spin texture and an exotic Lifshitz transition as a consequence of the linkage among multiple drumhead surface-state pockets.

关键词： Spin-orbit coupling Surface states Dichalcogenides Semimetals Topological materials Chiral symmetry First-principles calculations

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Journeys from quantum optics to quantum technology

arXiv

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arXiv 2017年

作者： Barnett, Stephen M. Beige, Almut Ekert, Artur Garraway, Barry M. Keitel, Christoph H. Kendon, Viv Lein, Manfred Milburn, Gerard J. Moya-Cessa, Héctor M. Murao, Mio Pachos, Jiannis K. Palma, G. Massimo Paspalakis, Emmanuel Phoenix, Simon J.D. Piraux, Bernard Plenio, Martin B. Sanders, Barry C. Twamley, Jason Vidiella-Barranco, A. Kim, M.S. School of Physics and Astronomy University of Glasgow GlasgowG12 8QQ United Kingdom School of Physics and Astronomy University of Leeds LeedsLS2 9JT United Kingdom Mathematical Institute University of Oxford Centre for Quantum Technologies National University of Singapore Department of Physics and Astronomy University of Sussex Falmer BrightonBN1 9QH United Kingdom Max-Planck-Institut für Kernphysik Saupfercheckweg 1 Heidelberg69117 Germany Department of Physics Durham University South Road DurhamDH1 3LE United Kingdom Institute for Theoretical Physics Leibniz Universität Hannover Hannover30167 Germany Centre for Engineered Quantum Systems School of Mathematics and Physics University of Queensland 4072 Australia Instituto Nacional de Astrofísica Óptica y Electrónica Calle Luis Enrique Erro No. 1 Sta. Ma. Tonantzintla Pue.CP 72840 Mexico Department of Physics Graduate School of Science University of Tokyo Japan NEST Istituto Nanoscienze CNR Dipartimento di Fisica e Chimica Università degli Studi di Palermo via Archirafi 36 PalermoI-90123 Italy Materials Science Department School of Natural Sciences University of Patras Patras265 04 Greece Department of Applied Mathematics and Sciences Khalifa University P.O. Box: 127788 Abu Dhabi United Arab Emirates Universite Catholique de Louvain Louvain-la-NeuveB-1348 Belgium Universität Ulm Albert-Einstein-Allee 11 Ulm89069 Germany Institute for Quantum Science and Technology University of Calgary ABT2N 1N4 Canada Hefei National Laboratory for Physical Sciences at Microscale University of Science and Technology of China Hefei Anhui230026 China Shanghai Branch CAS Center for Excellence Synergetic Innovation Center in Quantum Information and Quantum Physics University of Science and Technology of China Shanghai201315 China Program in Quantum Information Science Canadian Institute for Advanced Research TorontoONM5G 1Z8 Canada Centre for Engineered Quantum Systems Department of Physics and

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On-Demand Guided Bone Regeneration with Microbial Protection of Ornamented SPU Scaffold with Bismuth-Doped Single Crystalline Hydroxyapatite: Augmentation and Cartilage Formation

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ACS applied materials & interfaces 2016年第6期8卷 4086-100页

作者： M Selvakumar Priyanka Srivastava Harpreet Singh Pawar Nimmy K Francis Bodhisatwa Das G Sathishkumar Bhuvaneshwaran Subramanian Saravana Kumar Jaganathan Gibin George S Anandhan Santanu Dhara Golok B Nando Santanu Chattopadhyay Indian Institute of Technology Rubber Technology Centre Kharagpur 721302 India. Sanjay Gandhi Post Graduate Institute of Medical Science Department of Medical Genetics Lucknow 226014 Uttar Pradesh India. Indian Institute of Technology School of Medical Science and Technology Kharagpur 721302 India. Bharathidasan University Department of Biotechnology and Genetic Engineering Tiruchirappalli 620024 Tamilnadu India. Indian Institute of Technology RISUG® and Allied Science Laboratories School of Medical Science and Technology Kharagpur 721302 India. Universiti Teknologi Malaysia Faculty of Bioscience and Medical Engineering IJN-UTM Cardiovascular Engineering Centre Johor Bahru 81310 Malaysia. National Institute of Technology Karnataka Department of Metallurgical and Materials Engineering Mangalore 575025 Karnataka India.

Guided bone regeneration (GBR) scaffolds are futile in many clinical applications due to infection problems. In this work, we fabricated GBR with an anti-infective scaffold by ornamenting 2D single crystalline bismuth-doped nanohydroxyapatite (Bi-nHA) rods onto segmented polyurethane (SPU). Bi-nHA with high aspect ratio was prepared without any templates. Subsequently, it was introduced into an unprecedented synthesized SPU matrix based on dual soft segments (PCL-b-PDMS) of poly(ε-caprolactone) (PCL) and poly(dimethylsiloxane) (PDMS), by an in situ technique followed by electrospinning to fabricate scaffolds. For comparison, undoped pristine nHA rods were also ornamented into it. The enzymatic ring-opening polymerization technique was adapted to synthesize soft segments of PCL-b-PDMS copolymers of SPU. Structure elucidation of the synthesized polymers is done by nuclear magnetic resonance spectroscopy. Sparingly, Bi-nHA ornamented scaffolds exhibit tremendous improvement (155%) in the mechanical properties with excellent antimicrobial activity against various human pathogens. After confirmation of high osteoconductivity, improved biodegradation, and excellent biocompatibility against osteoblast cells (in vitro), the scaffolds were implanted in rabbits by subcutaneous and intraosseous (tibial) sites. Various histological sections reveal the signatures of early cartilage formation, endochondral ossification, and rapid bone healing at 4 weeks of the critical defects filled with ornamented scaffold compared to SPU scaffold. This implies osteogenic potential and ability to provide an adequate biomimetic microenvironment for mineralization for GBR of the scaffolds. Organ toxicity studies further confirm that no tissue architecture abnormalities were observed in hepatic, cardiac, and renal tissue sections. This finding manifests the feasibility of fabricating a mechanically adequate nanofibrous SPU scaffold by a biomimetic strategy and the advantages of Bi-nHA ornamentatio

关键词： electrospun scaffold guided bone regeneration histology nanohydroxyapatite segmented polyurethane

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