Effect of the second-step voltages on the structural and corrosion properties of silicon-calcium-phosphate (Si-CaP) coatings on Mg-Zn-Ca alloy.

Abstract:

:The applications of magnesium (Mg) alloys as biodegradable orthopedic implants are mainly restricted due to their rapid degradation rate in the physiological environment. In this study, Si-CaP micro-arc oxidation (MAO) coatings were prepared on a Mg-Zn-Ca alloy by a second-step MAO process at different voltages in order to decrease the degradation rate and increase the bioactivity of the alloy. The microstructure and morphology of the samples were characterized using XRD, FT-IR SEM and EDS. The degradation behaviours of samples were evaluated using electrochemical techniques, and immersion tests in simulated body fluid (SBF). The results indicate that the morphology of the Si-CaP coatings changed significantly with the increase in Ca/P ratio as the second-step voltage increased. The Si-CaP containing coating produced at 450 V could significantly decrease the degradation rate of Mg and caused a slow increase in pH of the SBF solution. The haemolysis test concluded that the coating C3 did not cause a haemolytic reaction. The corrosion resistance of Mg alloy was greatly improved with the Si-CaP coatings, and the Mg alloy with Si-CaP coating prepared at 450 V had the best corrosion resistance, which indicates that the Si-CaP coatings are promising for improving the biodegradation properties of Mg-based orthopedic implants. Haemolysis tests indicated that the Si-CaP coating prepared at 450 V conforms to the given standard (YY/T0127.1-93).

journal_name

R Soc Open Sci

authors

Dou J,Zhao Y,Lu L,Gu G,Yu H,Chen C

doi

10.1098/rsos.172410

subject

Has Abstract

pub_date

2018-10-10 00:00:00

pages

172410

issue

10

issn

2054-5703

pii

rsos172410

journal_volume

5

pub_type

杂志文章
  • The use of yank-time signal as an alternative to identify kinematic events and define phases in human countermovement jumping.

    abstract::Detailed examinations of both the movement and muscle activation patterns used by animals and humans to complete complex tasks are difficult to obtain in many environments. Therefore, the ability to infer movement and muscle activation patterns after capture of a single set of easily obtained data is highly sought aft...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.192093

    authors: Sahrom SB,Wilkie JC,Nosaka K,Blazevich AJ

    更新日期:2020-08-26 00:00:00

  • Three-dimensional innate mobility of the human foot bones under axial loading using biplane X-ray fluoroscopy.

    abstract::The anatomical design of the human foot is considered to facilitate generation of bipedal walking. However, how the morphology and structure of the human foot actually contribute to generation of bipedal walking remains unclear. In the present study, we investigated the three-dimensional kinematics of the foot bones u...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.171086

    authors: Ito K,Hosoda K,Shimizu M,Ikemoto S,Nagura T,Seki H,Kitashiro M,Imanishi N,Aiso S,Jinzaki M,Ogihara N

    更新日期:2017-10-18 00:00:00

  • The interaction between map complexity and crowd movement on navigation decisions in virtual reality.

    abstract::A carefully designed map can reduce pedestrians' cognitive load during wayfinding and may be an especially useful navigation aid in crowded public environments. In the present paper, we report three studies that investigated the effects of map complexity and crowd movement on wayfinding time, accuracy and hesitation u...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.191523

    authors: Zhao H,Thrash T,Grossrieder A,Kapadia M,Moussaïd M,Hölscher C,Schinazi VR

    更新日期:2020-03-25 00:00:00

  • An unethical optimization principle.

    abstract::If an artificial intelligence aims to maximize risk-adjusted return, then under mild conditions it is disproportionately likely to pick an unethical strategy unless the objective function allows sufficiently for this risk. Even if the proportion η of available unethical strategies is small, the probability p ...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.200462

    authors: Beale N,Battey H,Davison AC,MacKay RS

    更新日期:2020-07-01 00:00:00

  • A promising material for bone repair: PMMA bone cement modified by dopamine-coated strontium-doped calcium polyphosphate particles.

    abstract::Polymethyl methacrylate (PMMA) bone cement has been widely used in clinics as bone repair materials for its excellent mechanical properties and good injection properties. However, it also has defects such as poor biological performance, high temperature, and the monomer has certain toxicity. Our study tried to modify ...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.191028

    authors: Liu X,Cheng C,Peng X,Xiao H,Guo C,Wang X,Li L,Yu X

    更新日期:2019-10-02 00:00:00

  • A numerical study on oxygen adsorption in porous media of coal rock based on fractal geometry.

    abstract::In order to explore the factors affecting coal spontaneous combustion, the fractal characteristics of coal samples are tested, and a pore-scale model for oxygen adsorption in coal porous media is developed based on self-similar fractal model. The liquid nitrogen adsorption experiments show that the coal samples indica...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.191337

    authors: Lv X,Liang X,Xu P,Chen L

    更新日期:2020-02-12 00:00:00

  • Behavioural responses of spinner dolphins to human interactions.

    abstract::There is increasing evidence that whale and dolphin watching activities have detrimental effects on targeted cetacean populations. In Egypt, spinner dolphins regularly occur in the resting areas of Samadai, Satayah and Qubbat'Isa reefs. In-water human interactions with dolphins are regulated with a time-area closure s...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.172044

    authors: Fumagalli M,Cesario A,Costa M,Harraway J,Notarbartolo di Sciara G,Slooten E

    更新日期:2018-04-25 00:00:00

  • A pair of non-optimal codons are necessary for the correct biosynthesis of the Aspergillus nidulans urea transporter, UreA.

    abstract::In both prokaryotic and eukaryotic genomes, synonymous codons are unevenly used. Such differential usage of optimal or non-optimal codons has been suggested to play a role in the control of translation initiation and elongation, as well as at the level of transcription and mRNA stability. In the case of membrane prote...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.190773

    authors: Sanguinetti M,Iriarte A,Amillis S,Marín M,Musto H,Ramón A

    更新日期:2019-11-13 00:00:00

  • Players acting as leaders in turn improve cooperation.

    abstract::Cooperation behaviour is an important topic in society as well as in the biological field, and many factors yield cooperation. Many social phenomena constitute Stackelberg games, but there is little literature on the relationship between Stackelberg games and cooperation. This article shows that in the repeated dynami...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.190251

    authors: Nie PY,Wang C,Cui T

    更新日期:2019-07-10 00:00:00

  • Synthesis of poly(acrylic acid) coated magnetic nanospheres via a multiple polymerization route.

    abstract::Magnetic nanospheres are versatile candidates for both fundamental and practical applications. Before they are applied in more complicated fields, their surface must be modified by several functionalities. However, the surface modification can be affected by the magnetic nanoparticles (MNP) embedded in the polymer mat...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.190141

    authors: Li K,Chen K,Wang Q,Zhang Y,Gan W

    更新日期:2019-07-10 00:00:00

  • Correlated evolution of neck length and leg length in birds.

    abstract::Despite a diversity of about 10 000 extant species, the sophisticated avian 'body plan' has not much changed once it was achieved around 160 Ma after the origin of powered flight. All birds are bipedal having wings, a rigid trunk, a short and ossified tail, a three-segmented leg and digitigrade feet. The avian neck, h...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.181588

    authors: Böhmer C,Plateau O,Cornette R,Abourachid A

    更新日期:2019-05-08 00:00:00

  • Removal of cadmium from aqueous solutions using industrial coal fly ash-nZVI.

    abstract::Batch experiments were conducted to test the effects of various solution properties, such as pH, temperature, initial concentration and anoxic and aerobic atmosphere, on Cd removal by nanoscale zerovalent iron (nZVI) supported on industrial coal fly ash. Cd (II) could be removed by adsorption on fly ash-nZVI in a very...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.171051

    authors: Ma L,Wei Q,Chen Y,Song Q,Sun C,Wang Z,Wu G

    更新日期:2018-02-14 00:00:00

  • Effects of biochar on the fate and toxicity of herbicide fenoxaprop-ethyl in soil.

    abstract::Biochar, as a soil amendment in agriculture, has attracted considerable attention. In the study, the fate and toxicity of the herbicide fenoxaprop-ethyl were evaluated in soils with and without 5% rice husk biochar amendment. Fenoxaprop-ethyl and metabolite fenoxaprop degradation followed first-order kinetics in the t...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.171875

    authors: Jing X,Wang T,Yang J,Wang Y,Xu H

    更新日期:2018-05-02 00:00:00

  • Quantifying the energy stores of capital breeding humpback whales and income breeding sperm whales using historical whaling records.

    abstract::Cetacean energy stores are known to vary according to life history, reproductive status and time of year; however, the opportunity to quantify these relationships is rare. Using a unique set of historical whaling records from Western Australia (1952-1963), we investigated energy stores of large cetaceans with differin...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.160290

    authors: Irvine LG,Thums M,Hanson CE,McMahon CR,Hindell MA

    更新日期:2017-03-15 00:00:00

  • Influence of head morphology and natural postures on sound localization cues in crocodilians.

    abstract::As top predators, crocodilians have an acute sense of hearing that is useful for their social life and for probing their environment in hunting situations. Although previous studies suggest that crocodilians are able to localize the position of a sound source, how they do this remains largely unknown. In this study, w...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.190423

    authors: Papet L,Grimault N,Boyer N,Mathevon N

    更新日期:2019-07-10 00:00:00

  • An investigation into the unusual linkage isomerization and nitrite reduction activity of a novel tris(2-pyridyl) copper complex.

    abstract::The copper-containing nitrite reductases (CuNIRs) are a class of enzymes that mediate the reduction of nitrite to nitric oxide in biological systems. Metal-ligand complexes that reproduce the salient features of the active site of CuNIRs are therefore of fundamental interest, both for elucidating the possible mode of ...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.170593

    authors: Roger I,Wilson C,Senn HM,Sproules S,Symes MD

    更新日期:2017-08-16 00:00:00

  • Organization of biogeochemical nitrogen pathways with switch-like adjustment in fluctuating soil redox conditions.

    abstract::Nitrogen is cycled throughout ecosystems by a suite of biogeochemical processes. The high complexity of the nitrogen cycle resides in an intricate interplay between reversible biochemical pathways alternatively and specifically activated in response to diverse environmental cues. Despite aggressive research, how the f...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.160768

    authors: Lamba S,Bera S,Rashid M,Medvinsky AB,Sun GQ,Acquisti C,Chakraborty A,Li BL

    更新日期:2017-01-11 00:00:00

  • A multi-functional chemosensor for highly selective ratiometric fluorescent detection of silver(I) ion and dual turn-on fluorescent and colorimetric detection of sulfide.

    abstract::A multi-functional chemosensor 1 as silver and sulfide detector was synthesized by the combination of octopamine and 4-dimethylaminocinnamaldehyde. Sensor 1 exhibited a ratiometric fluorescence emission for Ag+ from blue to sky. The binding mode of 1 and Ag+ turned out to be a 1 : 1 ratio as determined using Job plot ...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.180293

    authors: Kang JH,Chae JB,Kim C

    更新日期:2018-06-13 00:00:00

  • Separation of the main flavonoids and essential oil from seabuckthorn leaves by ultrasonic/microwave-assisted simultaneous distillation extraction.

    abstract::Volatile essential oils (EOs), non-volatile rutin (RU), quercetin (QU), kaempferol (KA) and isorhamnetin (IS) were effectively extracted and isolated from seabuckthorn (Hippophae rhamnoides L.) leaves by ionic liquid-based ultrasound/microwave-assisted simultaneous distillation extraction (ILUMASDE). After optimizatio...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.180133

    authors: Li C,Zhang J,Zhao C,Yang L,Zhao W,Jiang H,Ren X,Su W,Li Y,Guan J

    更新日期:2018-07-18 00:00:00

  • Search as a simple take-the-best heuristic.

    abstract::Humans commonly engage in a variety of search behaviours, for example when looking for an object, a partner, information or a solution to a complex problem. The success or failure of a search strategy crucially depends on the structure of the environment and the constraints it imposes on the individuals. Here, we focu...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.190529

    authors: Yahosseini KS,Moussaïd M

    更新日期:2019-10-30 00:00:00

  • What can associative learning do for planning?

    abstract::There is a new associative learning paradox. The power of associative learning for producing flexible behaviour in non-human animals is downplayed or ignored by researchers in animal cognition, whereas artificial intelligence research shows that associative learning models can beat humans in chess. One phenomenon in w...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.180778

    authors: Lind J

    更新日期:2018-11-28 00:00:00

  • Ecosystem services and ecological degradation of communal wetlands in a South African biodiversity hotspot.

    abstract::Wetlands provide important ecosystem services to rural communities. However, wetlands are often on communal land, so they may become degraded when individual users act to maximize their personal benefit from ecosystem services without bearing the full environmental costs of their actions. Although it is possible to ma...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.181770

    authors: Owethu Pantshwa A,Buschke FT

    更新日期:2019-06-12 00:00:00

  • Microencapsulated diets to improve bivalve shellfish aquaculture.

    abstract::Aquaculture is the fastest growing food sector and feeds over 3 billion people. Bivalve shellfish aquaculture makes up 25% of global aquaculture production and is worth annually US$19 billion, but continued growth is currently limited by suboptimal diets and limited tools for disease control. New advances in microenca...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.171142

    authors: Willer D,Aldridge DC

    更新日期:2017-11-08 00:00:00

  • How does human motor cortex regulate vocal pitch in singers?

    abstract::Vocal pitch is used as an important communicative device by humans, as found in the melodic dimension of both speech and song. Vocal pitch is determined by the degree of tension in the vocal folds of the larynx, which itself is influenced by complex and nonlinear interactions among the laryngeal muscles. The relations...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.172208

    authors: Belyk M,Lee YS,Brown S

    更新日期:2018-08-15 00:00:00

  • In situ investigations of the phase change behaviour of tungsten oxide nanostructures.

    abstract::This study uses two in situ techniques to investigate the geometry and phase change behaviour of bundled ultrathin W18O49 nanowires and WO3 nanoparticles. The in situ X-ray diffraction (XRD) results have shown that the phase transition of WO3 nanoparticles occurs in sequence from monoclinic (room temperature) → orthor...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.171932

    authors: Thummavichai K,Wang N,Xu F,Rance G,Xia Y,Zhu Y

    更新日期:2018-04-25 00:00:00

  • Neutral genetic variation in adult Chinook salmon (Oncorhynchus tshawytscha) affects brain-to-body trade-off and brain laterality.

    abstract::Low levels of heterozygosity can have detrimental effects on life history and growth characteristics of organisms but more subtle effects such as those on trade-offs of expensive tissues and morphological laterality, especially of the brain, have not been explicitly tested. The objective of the current study was to in...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.170989

    authors: Wiper ML,Lehnert SJ,Heath DD,Higgs DM

    更新日期:2017-12-06 00:00:00

  • Towards powerful experimental and statistical approaches to study intraindividual variability in labile traits.

    abstract::There is a long-standing interest in behavioural ecology, exploring the causes and correlates of consistent individual differences in mean behavioural traits ('personality') and the response to the environment ('plasticity'). Recently, it has been observed that individuals also consistently differ in their residual in...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.160352

    authors: Mitchell DJ,Fanson BG,Beckmann C,Biro PA

    更新日期:2016-10-26 00:00:00

  • Macrofouling communities and the degradation of plastic bags in the sea: an in situ experiment.

    abstract::The increasing amount of plastic littered into the sea may provide a new substratum for benthic organisms. These marine fouling communities on plastic have not received much scientific attention. We present, to our knowledge, the first comprehensive analysis of their macroscopic community composition, their primary pr...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.170549

    authors: Pauli NC,Petermann JS,Lott C,Weber M

    更新日期:2017-10-25 00:00:00

  • The presence of lateral photophores correlates with increased speciation in deep-sea bioluminescent sharks.

    abstract::The vast majority of species within the lanternshark genus Etmopterus harbour complex luminescent markings on their flanks, whose functional significance has long remained obscure. Recent studies, however, suggest these enigmatic photophore aggregations to play a role in intraspecific communication. Using visual model...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.150219

    authors: Claes JM,Nilsson DE,Mallefet J,Straube N

    更新日期:2015-07-29 00:00:00

  • Spreading of components of mood in adolescent social networks.

    abstract::Recent research has provided evidence that mood can spread over social networks via social contagion, but that, in seeming contradiction to this, depression does not. Here, we investigate whether there is evidence for the individual components of mood (such as appetite, tiredness and sleep) spreading through US adoles...

    journal_title:Royal Society open science

    pub_type: 杂志文章

    doi:10.1098/rsos.170336

    authors: Eyre RW,House T,Hill EM,Griffiths FE

    更新日期:2017-09-20 00:00:00