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BIOTECHNOLOGY (227 journals)                  1 2 | Last

Showing 1 - 200 of 227 Journals sorted alphabetically
3 Biotech     Open Access   (Followers: 7)
Advances in Bioscience and Biotechnology     Open Access   (Followers: 14)
Advances in Genetic Engineering & Biotechnology     Hybrid Journal   (Followers: 7)
African Journal of Biotechnology     Open Access   (Followers: 6)
Algal Research     Partially Free   (Followers: 9)
American Journal of Biochemistry and Biotechnology     Open Access   (Followers: 69)
American Journal of Bioinformatics Research     Open Access   (Followers: 8)
American Journal of Polymer Science     Open Access   (Followers: 30)
Animal Biotechnology     Hybrid Journal   (Followers: 9)
Annales des Sciences Agronomiques     Full-text available via subscription  
Applied Biochemistry and Biotechnology     Hybrid Journal   (Followers: 42)
Applied Bioenergy     Open Access  
Applied Biosafety     Hybrid Journal  
Applied Microbiology and Biotechnology     Hybrid Journal   (Followers: 62)
Applied Mycology and Biotechnology     Full-text available via subscription   (Followers: 5)
Arthroplasty Today     Open Access   (Followers: 1)
Artificial Cells, Nanomedicine and Biotechnology     Hybrid Journal   (Followers: 2)
Asia Pacific Biotech News     Hybrid Journal   (Followers: 2)
Asian Journal of Biotechnology     Open Access   (Followers: 8)
Asian Pacific Journal of Tropical Biomedicine     Open Access   (Followers: 2)
Australasian Biotechnology     Full-text available via subscription   (Followers: 1)
Banat's Journal of Biotechnology     Open Access  
BBR : Biochemistry and Biotechnology Reports     Open Access   (Followers: 4)
Bio-Algorithms and Med-Systems     Hybrid Journal   (Followers: 1)
Bio-Research     Full-text available via subscription   (Followers: 2)
Bioactive Materials     Open Access   (Followers: 1)
Biocatalysis and Agricultural Biotechnology     Hybrid Journal   (Followers: 4)
Biocybernetics and Biological Engineering     Full-text available via subscription   (Followers: 5)
Bioethics UPdate     Hybrid Journal  
Biofuels     Hybrid Journal   (Followers: 11)
Biofuels Engineering     Open Access   (Followers: 1)
Biological & Pharmaceutical Bulletin     Full-text available via subscription   (Followers: 5)
Biological Cybernetics     Hybrid Journal   (Followers: 10)
Biomarkers and Genomic Medicine     Open Access   (Followers: 5)
Biomarkers in Drug Development     Partially Free   (Followers: 1)
Biomaterials Research     Open Access   (Followers: 4)
BioMed Research International     Open Access   (Followers: 6)
Biomédica     Open Access  
Biomedical Engineering Research     Open Access   (Followers: 7)
Biomedical glasses     Open Access  
Biomedical Reports     Full-text available via subscription  
BioMedicine     Open Access  
Bioprinting     Hybrid Journal  
Bioresource Technology Reports     Hybrid Journal  
Bioscience, Biotechnology, and Biochemistry     Hybrid Journal   (Followers: 22)
Biosimilars     Open Access   (Followers: 1)
Biosurface and Biotribology     Open Access  
Biotechnic and Histochemistry     Hybrid Journal   (Followers: 2)
BioTechniques : The International Journal of Life Science Methods     Full-text available via subscription   (Followers: 28)
Biotechnologia Acta     Open Access   (Followers: 1)
Biotechnologie, Agronomie, Société et Environnement     Open Access   (Followers: 2)
Biotechnology     Open Access   (Followers: 6)
Biotechnology & Biotechnological Equipment     Open Access   (Followers: 5)
Biotechnology Advances     Hybrid Journal   (Followers: 33)
Biotechnology and Applied Biochemistry     Hybrid Journal   (Followers: 44)
Biotechnology and Bioengineering     Hybrid Journal   (Followers: 160)
Biotechnology and Bioprocess Engineering     Hybrid Journal   (Followers: 6)
Biotechnology and Genetic Engineering Reviews     Hybrid Journal   (Followers: 14)
Biotechnology and Health Sciences     Open Access   (Followers: 1)
Biotechnology and Molecular Biology Reviews     Open Access   (Followers: 1)
Biotechnology Annual Review     Full-text available via subscription   (Followers: 7)
Biotechnology for Biofuels     Open Access   (Followers: 10)
Biotechnology Frontier     Open Access   (Followers: 2)
Biotechnology Journal     Hybrid Journal   (Followers: 15)
Biotechnology Law Report     Hybrid Journal   (Followers: 4)
Biotechnology Letters     Hybrid Journal   (Followers: 33)
Biotechnology Progress     Hybrid Journal   (Followers: 39)
Biotechnology Reports     Open Access  
Biotechnology Research International     Open Access   (Followers: 2)
Biotechnology Techniques     Hybrid Journal   (Followers: 10)
Biotecnología Aplicada     Open Access  
Biotribology     Hybrid Journal  
BMC Biotechnology     Open Access   (Followers: 15)
Chinese Journal of Agricultural Biotechnology     Full-text available via subscription   (Followers: 3)
Communications in Mathematical Biology and Neuroscience     Open Access  
Computational and Structural Biotechnology Journal     Open Access   (Followers: 2)
Computer Methods and Programs in Biomedicine     Hybrid Journal   (Followers: 8)
Contributions to Tobacco Research     Open Access   (Followers: 3)
Copernican Letters     Open Access   (Followers: 1)
Critical Reviews in Biotechnology     Hybrid Journal   (Followers: 20)
Crop Breeding and Applied Biotechnology     Open Access   (Followers: 4)
Current Bionanotechnology     Hybrid Journal  
Current Biotechnology     Hybrid Journal   (Followers: 3)
Current Opinion in Biomedical Engineering     Hybrid Journal   (Followers: 1)
Current Opinion in Biotechnology     Hybrid Journal   (Followers: 55)
Current Pharmaceutical Biotechnology     Hybrid Journal   (Followers: 9)
Current Research in Bioinformatics     Open Access   (Followers: 14)
Current trends in Biotechnology and Pharmacy     Open Access   (Followers: 9)
EBioMedicine     Open Access  
Electronic Journal of Biotechnology     Open Access   (Followers: 1)
Entomologia Generalis     Full-text available via subscription  
Environmental Science : Processes & Impacts     Full-text available via subscription   (Followers: 4)
Experimental Biology and Medicine     Hybrid Journal   (Followers: 3)
Folia Medica Indonesiana     Open Access  
Food Bioscience     Hybrid Journal  
Food Biotechnology     Hybrid Journal   (Followers: 12)
Food Science and Biotechnology     Hybrid Journal   (Followers: 9)
Frontiers in Bioengineering and Biotechnology     Open Access   (Followers: 6)
Frontiers in Systems Biology     Open Access   (Followers: 2)
Fungal Biology and Biotechnology     Open Access   (Followers: 1)
GM Crops and Food: Biotechnology in Agriculture and the Food Chain     Full-text available via subscription   (Followers: 1)
GSTF Journal of BioSciences     Open Access  
HAYATI Journal of Biosciences     Open Access  
Horticulture, Environment, and Biotechnology     Hybrid Journal   (Followers: 11)
IEEE Transactions on Molecular, Biological and Multi-Scale Communications     Hybrid Journal   (Followers: 1)
IET Nanobiotechnology     Hybrid Journal   (Followers: 2)
IIOAB Letters     Open Access  
IN VIVO     Full-text available via subscription   (Followers: 4)
Indian Journal of Biotechnology (IJBT)     Open Access   (Followers: 2)
Indonesia Journal of Biomedical Science     Open Access   (Followers: 1)
Indonesian Journal of Biotechnology     Open Access   (Followers: 1)
Industrial Biotechnology     Hybrid Journal   (Followers: 18)
International Biomechanics     Open Access  
International Journal of Bioinformatics Research and Applications     Hybrid Journal   (Followers: 15)
International Journal of Biomechatronics and Biomedical Robotics     Hybrid Journal   (Followers: 4)
International Journal of Biomedical Research     Open Access   (Followers: 2)
International Journal of Biotechnology     Hybrid Journal   (Followers: 5)
International Journal of Biotechnology and Molecular Biology Research     Open Access   (Followers: 2)
International Journal of Biotechnology for Wellness Industries     Partially Free   (Followers: 1)
International Journal of Environment, Agriculture and Biotechnology     Open Access   (Followers: 5)
International Journal of Functional Informatics and Personalised Medicine     Hybrid Journal   (Followers: 4)
International Journal of Medicine and Biomedical Research     Open Access   (Followers: 1)
International Journal of Nanotechnology and Molecular Computation     Full-text available via subscription   (Followers: 3)
International Journal of Radiation Biology     Hybrid Journal   (Followers: 4)
Iranian Journal of Biotechnology     Open Access  
ISABB Journal of Biotechnology and Bioinformatics     Open Access  
Italian Journal of Food Science     Open Access   (Followers: 1)
Journal of Biometrics & Biostatistics     Open Access   (Followers: 3)
Journal of Bioterrorism & Biodefense     Open Access   (Followers: 6)
Journal of Petroleum & Environmental Biotechnology     Open Access   (Followers: 2)
Journal of Advanced Therapies and Medical Innovation Sciences     Open Access  
Journal of Advances in Biotechnology     Open Access   (Followers: 5)
Journal Of Agrobiotechnology     Open Access  
Journal of Analytical & Bioanalytical Techniques     Open Access   (Followers: 7)
Journal of Animal Science and Biotechnology     Open Access   (Followers: 6)
Journal of Applied Biomedicine     Open Access   (Followers: 3)
Journal of Applied Biotechnology     Open Access   (Followers: 2)
Journal of Applied Biotechnology Reports     Open Access   (Followers: 2)
Journal of Applied Mathematics & Bioinformatics     Open Access   (Followers: 5)
Journal of Biologically Active Products from Nature     Hybrid Journal   (Followers: 1)
Journal of Biomaterials and Nanobiotechnology     Open Access   (Followers: 6)
Journal of Biomedical Photonics & Engineering     Open Access  
Journal of Biomedical Practitioners     Open Access  
Journal of Bioprocess Engineering and Biorefinery     Full-text available via subscription  
Journal of Bioprocessing & Biotechniques     Open Access  
Journal of Biosecurity, Biosafety and Biodefense Law     Hybrid Journal   (Followers: 3)
Journal of Biotechnology     Hybrid Journal   (Followers: 68)
Journal of Chemical and Biological Interfaces     Full-text available via subscription   (Followers: 1)
Journal of Chemical Technology & Biotechnology     Hybrid Journal   (Followers: 10)
Journal of Chitin and Chitosan Science     Full-text available via subscription  
Journal of Colloid Science and Biotechnology     Full-text available via subscription  
Journal of Commercial Biotechnology     Full-text available via subscription   (Followers: 6)
Journal of Crop Science and Biotechnology     Hybrid Journal   (Followers: 7)
Journal of Essential Oil Research     Hybrid Journal   (Followers: 3)
Journal of Experimental Biology     Full-text available via subscription   (Followers: 25)
Journal of Genetic Engineering and Biotechnology     Open Access   (Followers: 5)
Journal of Ginseng Research     Open Access  
Journal of Industrial Microbiology and Biotechnology     Hybrid Journal   (Followers: 16)
Journal of Integrative Bioinformatics     Open Access  
Journal of International Biotechnology Law     Hybrid Journal   (Followers: 3)
Journal of Medical Imaging and Health Informatics     Full-text available via subscription  
Journal of Molecular Microbiology and Biotechnology     Full-text available via subscription   (Followers: 14)
Journal of Nano Education     Full-text available via subscription  
Journal of Nanobiotechnology     Open Access   (Followers: 4)
Journal of Nanofluids     Full-text available via subscription   (Followers: 2)
Journal of Organic and Biomolecular Simulations     Open Access  
Journal of Plant Biochemistry and Biotechnology     Hybrid Journal   (Followers: 6)
Journal of Science and Applications : Biomedicine     Open Access  
Journal of the Mechanical Behavior of Biomedical Materials     Hybrid Journal   (Followers: 11)
Journal of Trace Elements in Medicine and Biology     Hybrid Journal   (Followers: 1)
Journal of Tropical Microbiology and Biotechnology     Full-text available via subscription  
Journal of Yeast and Fungal Research     Open Access   (Followers: 1)
Marine Biotechnology     Hybrid Journal   (Followers: 5)
Messenger     Full-text available via subscription  
Metabolic Engineering Communications     Open Access   (Followers: 4)
Metalloproteinases In Medicine     Open Access  
Microalgae Biotechnology     Open Access   (Followers: 2)
Microbial Biotechnology     Open Access   (Followers: 9)
MicroMedicine     Open Access   (Followers: 3)
Molecular and Cellular Biomedical Sciences     Open Access  
Molecular Biotechnology     Hybrid Journal   (Followers: 16)
Molecular Genetics and Metabolism Reports     Open Access   (Followers: 3)
Nanobiomedicine     Open Access  
Nanobiotechnology     Hybrid Journal   (Followers: 3)
Nanomaterials and Nanotechnology     Open Access  
Nanomaterials and Tissue Regeneration     Open Access  
Nanomedicine and Nanobiology     Full-text available via subscription  
Nanomedicine Research Journal     Open Access  
Nanotechnology Reviews     Hybrid Journal   (Followers: 5)
Nature Biotechnology     Full-text available via subscription   (Followers: 521)
Network Modeling and Analysis in Health Informatics and Bioinformatics     Hybrid Journal   (Followers: 3)
New Biotechnology     Hybrid Journal   (Followers: 4)
Nigerian Journal of Biotechnology     Open Access  
Nova Biotechnologica et Chimica     Open Access  
NPG Asia Materials     Open Access  
npj Biofilms and Microbiomes     Open Access  
OA Biotechnology     Open Access  
Plant Biotechnology Journal     Open Access   (Followers: 10)
Plant Biotechnology Reports     Hybrid Journal   (Followers: 4)
Preparative Biochemistry and Biotechnology     Hybrid Journal   (Followers: 4)

        1 2 | Last

Journal Cover Biosurface and Biotribology
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  This is an Open Access Journal Open Access journal
   ISSN (Online) 2405-4518
   Published by Elsevier Homepage  [3177 journals]
  • Bionic design perspectives based on the formation mechanism of dental
           anti-wear function

    • Authors: ZR Zhou; W. Gong; J. Zheng
      Abstract: Publication date: Available online 6 February 2018
      Source:Biosurface and Biotribology
      Author(s): ZR Zhou, W. Gong, J. Zheng
      Human teeth are the important masticatory organ and therefore are subjected to friction and wear everyday. Both the loading condition and the environment are relatively complex in the mouth, however, normally human teeth can serve in mouth all their time with excellent wear resistance in most people. Obviously, through the process of human evolution, human teeth have become a natural anti-wear system that far outclasses the best engineering anti-wear systems at present. To understand the excellent anti-wear properties of human teeth, we need to look into what act as the wear resisting elements of human teeth. In this paper, based on the results obtained by the authors and from literatures, the formation mechanism of dental anti-wear function was summarized. Particular attention was paid to the multi-scale anti-wear mechanism caused by the unique hierarchical structure of human teeth, the self-repair mechanism by tooth remineralization, and the cooperating lubrication mechanism of salivary pellicle upon tooth surface and the hydration proteins within the tooth. Based on the formation mechanism of dental anti-wear function, some bionic design perspectives were discussed and future research directions are recommended.

      PubDate: 2018-02-17T09:59:10Z
      DOI: 10.1016/j.bsbt.2017.12.003
  • Dietary exogenous and endogenous abrasives and tooth wear in African

    • Authors: G.D. Sanson; S. Kerr; J. Read
      Abstract: Publication date: Available online 31 January 2018
      Source:Biosurface and Biotribology
      Author(s): G.D. Sanson, S. Kerr, J. Read
      The potential contribution of exogenous dust and grit and endogenous plant silica to tooth wear of the African buffalo in Kruger National Park was examined. Endogenous silica as percent dry matter on basalt soils (6.58%) was significantly higher than on granite soils (4.41%), and significantly higher in dry season grasses (6.64%) than in wet season grasses (4.41%). Exogenous grit on granite grasses (0.43%) had significantly higher loads than basalt grasses (0.16%) and wet season loads significantly higher (0.50%) than dry season (0.09%) loads. Grasses on granite soils were significantly tougher (0.266Jm-1) than those on basalt soils (0.215Jm-1). Adult buffalo were estimated to consume 10–28kg per year of exogenous grit and 300–400kg per year of endogenous silica. First lower buffalo molars are estimated to wear at an average rate of 1.94mm per year with no significant difference between wear on the different soil types or between sexes. The high silica intake with no observable differences in tooth wear questions the role of silica in tooth wear. It is proposed that there is an interaction between exogenous and endogenous abrasives and that abrasion must be considered more holistically.

      PubDate: 2018-02-06T06:13:33Z
      DOI: 10.1016/j.bsbt.2017.12.006
  • Dental topography and microwear texture in Sapajus apella

    • Authors: Peter S. Ungar; Claire L. Hartgrove; Alexa N. Wimberly; Mark F. Teaford
      Abstract: Publication date: Available online 31 January 2018
      Source:Biosurface and Biotribology
      Author(s): Peter S. Ungar, Claire L. Hartgrove, Alexa N. Wimberly, Mark F. Teaford
      Dental microwear texture pattern has been associated with aspects of diet for a broad range of mammalian taxa. The basic idea is that soft, tough foods are sheared with a steeper angle of approach between opposing occlusal surfaces, whereas hard, brittle items are crushed with forces perpendicular to those surfaces; and this difference is manifested in anisotropic, striated microwear textures for tough foods, and complex, pitted ones for hard objects. Other factors may, however, influence microwear texture pattern and confound diet signals. For example, if tooth surface slope influences angle of approach between opposing teeth, then perhaps wear-related changes in tooth shape could affect microwear pattern. This study evaluates the effects of occlusal topography on microwear texture for a series of variably worn upper second molars of one primate species, Sapajus apella. Results indicate no significant covariation between any measured topographic attribute (average slope, angularity, relief) and microwear texture variable (complexity, anisotropy, textural fill volume). This suggests that, for this taxon at least, wear-related changes in tooth form do not affect microwear pattern in a consistent manner. This implies that variably worn teeth can be included in samples for comparisons aimed at distinguishing groups by diet.

      PubDate: 2018-02-06T06:13:33Z
      DOI: 10.1016/j.bsbt.2017.12.002
  • Mussel-inspired polydopamine for bio-surface functionalization

    • Authors: Y.H. Ding; M. Floren; W. Tan
      Pages: 121 - 136
      Abstract: Publication date: December 2016
      Source:Biosurface and Biotribology, Volume 2, Issue 4
      Author(s): Y.H. Ding, M. Floren, W. Tan
      Surface functionalization via molecular design has been a key approach to incorporate new functionalities into existing biomaterials for biomedical application. Mussel-inspired polydopamine (PDA) has aroused great interest as a new route to the functionalization of biomaterials, due to its simplicity and material independency in deposition, favorable interactions with cells, and strong reactivity for secondary functionalization. Herein, this review attempts to highlight the recent findings and progress of PDA in bio-surface functionalization for biomedical applications. The efforts made to elucidate the polymerization mechanism, PDA structure, and the preparation parameters have been discussed. Interactions between PDA coatings and the various cell types involved in different biomedical applications including general cell adhesion, bone regeneration, blood compatibility, and antimicrobial activity have also been highlighted. A brief discussion of post-functionalization of PDA and nanostructured PDA is also provided.

      PubDate: 2017-11-07T16:11:21Z
      DOI: 10.1016/j.bsbt.2016.11.001
  • Antireflective surface inspired from biology: A review

    • Authors: Z.W. Han; Z. Wang; X.M. Feng; B. Li; Z.Z. Mu; J.Q. Zhang; S.C. Niu; L.Q. Ren
      Pages: 137 - 150
      Abstract: Publication date: December 2016
      Source:Biosurface and Biotribology, Volume 2, Issue 4
      Author(s): Z.W. Han, Z. Wang, X.M. Feng, B. Li, Z.Z. Mu, J.Q. Zhang, S.C. Niu, L.Q. Ren
      Optical anti-reflection means the decrease of reflection as much as possible, which has been used in many fields such as solar cells, diodes, optical and optoelectronic devices, screens, sensors, anti-glare glasses and so on. Over millions of years, natural creatures have been uninterruptedly combating with extreme environmental conditions. In particular, some biology has evolved a diversity of antireflective functional surfaces gradually. More importantly, as a result of the same order of magnitude in the ingenious structures and the wavelength of visible light, these structures can interact strongly and present excellent antireflective performance. It is worth to be mentioned that these wonderful architectures lead to a perfect performance on antireflection. This review mainly covers recent progress on the bionic antireflective structures. Then, the mechanism of the structure-based antireflective properties of some biology is analyzed. Besides, some typical models and the basic theory of these bionic structures for antireflection have been reported to facilitate mechanism analysis. At last, the prospects and the challenge researchers may faced with are also addressed. It is hoped that this review could be beneficial to provide some innovative inspirations and new ideas to the researchers in the fields of engineering, and materials science.

      PubDate: 2017-11-07T16:11:21Z
      DOI: 10.1016/j.bsbt.2016.11.002
  • Theoretical understanding of bio-interfaces/bio-surfaces by simulation: A
           mini review

    • Authors: Y.H. Tang; H.P. Zhang
      Pages: 151 - 161
      Abstract: Publication date: December 2016
      Source:Biosurface and Biotribology, Volume 2, Issue 4
      Author(s): Y.H. Tang, H.P. Zhang
      Computer simulation has become an increasingly popular research method in materials science. In this review, we discuss the applications of computer simulation to surfaces and interfaces with different simulation methods. To restrict the discussion somewhat, we focus primarily on bio-interface/bio-surface interactions. First we discuss why and how atomistic level simulation can be used to study surface and interface interaction. Then, the interface and surface interactions studied by different simulation methods are explored. Some thoughts on the future of modeling and simulation in bio-interface/bio-surface applications are presented.

      PubDate: 2017-11-07T16:11:21Z
      DOI: 10.1016/j.bsbt.2016.11.003
  • Detection and prediction of osteoarthritis in knee and hand joints based
           on the X-ray image analysis

    • Authors: G.W. Stachowiak; M. Wolski; T. Woloszynski; P. Podsiadlo
      Pages: 162 - 172
      Abstract: Publication date: December 2016
      Source:Biosurface and Biotribology, Volume 2, Issue 4
      Author(s): G.W. Stachowiak, M. Wolski, T. Woloszynski, P. Podsiadlo
      Current assessment of osteoarthritis (OA) is primary based on visual grading of joint space narrowing and osteophytes present on radiographs. The approach is observer-dependent, not sensitive enough for the detection of the early stages of OA and time consuming. A promising solution is through fractal analysis of trabecular bone (TB) textures on radiographs. The goal is to develop an automated decision support system for the detection and prediction of OA based on TB texture regions selected on knee and hand radiographs. In this review, we describe our progress towards this development which was conducted in five stages, i.e., (i) development of automated methods for the selection of TB texture regions on knee and hand radiographs (ii), development of fractal signature methods for TB texture analysis, (iii) applications of the methods in the analysis of x-ray images of knees and hands, (iv) development of TB texture classification system, and (v) development of ReadMyXray website for knee x-ray analysis. The results achieved so far are encouraging and it is hoped, that once the system is fully developed and evaluated, it will be used to aid medical practitioners in the decision-making, i.e., in designing OA preventative measures, treatments and monitoring the OA progression.

      PubDate: 2017-11-07T16:11:21Z
      DOI: 10.1016/j.bsbt.2016.11.004
  • Tribology of medical devices

    • Authors: Z.M. Jin; J. Zheng; W. Li; Z.R. Zhou
      Pages: 173 - 192
      Abstract: Publication date: December 2016
      Source:Biosurface and Biotribology, Volume 2, Issue 4
      Author(s): Z.M. Jin, J. Zheng, W. Li, Z.R. Zhou
      Importance of tribology in a number of medical devices and surgical instruments is reviewed, including artificial joints, artificial teeth, dental implants and orthodontic appliances, cardiovascular devices, contact lenses, artificial limbs and surgical instruments. The current focus and future developments of these medical devices are highlighted from a tribological point of view, together with the underlying mechanisms.

      PubDate: 2017-11-07T16:11:21Z
      DOI: 10.1016/j.bsbt.2016.12.001
  • Ig Nobel Prize-winning episode: Trip from a slip on a banana peel to the
           mysterious world of mucus

    • Authors: K. Mabuchi; R. Sakai; M. Honna; M. Ujihira
      Pages: 81 - 85
      Abstract: Publication date: September 2016
      Source:Biosurface and Biotribology, Volume 2, Issue 3
      Author(s): K. Mabuchi, R. Sakai, M. Honna, M. Ujihira
      Slip on a banana peel is not only a gag seed but also a genuinely tribological phenomenon. We measured the frictional coefficient under banana skin on floor material. The measured frictional coefficient was much lower than the value on common materials and similar one on well lubricated surfaces. Some deductions on mystery of organics were leaded from the similarity of gel function in banana peels and in articular joints. Every polymers are only synthesized by organisms. Furthermore, viscous materials are only formed by organic substances.

      PubDate: 2017-11-07T16:11:21Z
      DOI: 10.1016/j.bsbt.2016.08.001
  • Prediction of in-vivo kinematics and contact track of total knee
           arthroplasty during walking

    • Authors: Zhenxian Chen; Zhongmin Jin
      Pages: 86 - 94
      Abstract: Publication date: September 2016
      Source:Biosurface and Biotribology, Volume 2, Issue 3
      Author(s): Zhenxian Chen, Zhongmin Jin
      In vivo kinematics of total knee arthroplasty (TKA) are essential to investigate the articular surface wear of the knee implant. However, the prediction of in vivo knee kinematics and contact track during walking remains challenged. In this study, a previously developed subject-specific musculoskeletal multibody dynamics model was utilized to predict the in vivo kinematics of TKA during the straight gait and right-turn cycles, and the contact position as described by the center of pressure (COP). The predicted in vivo knee motions of the straight gait cycle were found with similar kinematic patterns and ranges of motion to clinical studies. The main internal-external rotations of the femoral component relative to the tibial insert occurred at the stance phase of the straight gait cycle with a lateral rotational pivot point; while the remaining changes in the contact positon mainly exhibited the anterior or posterior translation. For the right-turn cycle, the major changes in the contact positon were the internal-external rotations, and the rotational pivot points were mostly located at the medial compartment. These predictions further demonstrate that in vivo kinematics and contact track are gait pattern-dependent and are important considerations to further investigate the in vivo wear mechanisms of TKA bearings.

      PubDate: 2017-11-07T16:11:21Z
      DOI: 10.1016/j.bsbt.2016.08.002
  • Influence of centrifugation treatment on the lubricating properties of
           human whole saliva

    • Authors: Y.F. Zhang; J. Zheng; L. Zheng; Z.R. Zhou
      Pages: 95 - 101
      Abstract: Publication date: September 2016
      Source:Biosurface and Biotribology, Volume 2, Issue 3
      Author(s): Y.F. Zhang, J. Zheng, L. Zheng, Z.R. Zhou
      An important function of human saliva is to serve as oral lubricant during mastication process and then effectively reduce tooth wear. Thus, centrifuged human whole saliva has been used as a substitute for human whole saliva for many in vitro studies on dental tribology. However, the difference in lubricating properties between human whole saliva and centrifuged saliva remains unclear. The objective of this study was to investigate the influence of centrifugation on the lubricating properties of human whole saliva. In this paper, the lubrication of both human whole saliva and centrifuged saliva on human tooth enamel were comparatively studied in vitro using a nano-scratch tester. The structure, composition, and mechanical properties of salivary pellicle were characterized. Result showed that food debris and high molecular weight proteins in human whole saliva were removed by centrifugation. However, the low molecular weight proteins were still in saliva. Under the lubrication of human whole saliva, the salivary pellicle formed on the enamel surface was uneven, and its mechanical properties were inhomogeneous. But a smooth and homogeneous salivary pellicle was obtained upon the enamel surface under lubrication of centrifuged saliva. Moreover, there were no significant deference in friction coefficient and wear volume of tooth enamel between human whole saliva and centrifuged saliva lubricating conditions. In summary, centrifuged saliva exhibited similar lubrication to human whole saliva. Centrifugation treatment does not impair the lubricating properties of human saliva. On the contrary centrifugation can help minimize the effect of cell and food debris.

      PubDate: 2017-11-07T16:11:21Z
      DOI: 10.1016/j.bsbt.2016.09.001
  • An in vitro study of the wear behaviour of dental composites

    • Authors: J.A. Arsecularatne; N.R. Chung; M. Hoffman
      Pages: 102 - 113
      Abstract: Publication date: September 2016
      Source:Biosurface and Biotribology, Volume 2, Issue 3
      Author(s): J.A. Arsecularatne, N.R. Chung, M. Hoffman
      Use of dental resin composites in restorative dentistry has increased significantly in recent years. While wear may be of minimal importance for small to medium size composite restorations, failure rates are higher for large restorations. Moreover, wear is a significant mode of posterior restoration failure for patients with bruxing and clinching habits. However, in spite of previous in vitro studies, the mechanisms associated with the wear of these composites are not yet clearly identified. Accordingly, the wear behaviours of three different glass-polymer dental composite materials were studied in vitro and the associated mechanism(s) were investigated in-depth. Reciprocating sliding wear tests were carried out using these composites where a self-mating composite cusp was sliding on a flat-surface sample. The wear loss was quantified using profilometry and the wear scar surface and subsurface were analysed using electron microscopy techniques to reveal the underlying wear mechanisms. The composites’ mechanical properties were assessed using nanoindentation. The results revealed that two different wear mechanisms were dominant for the composites tested: fatigue wear for the anterior/posterior composites and, abrasion due to lateral crack formation and filler particle pull out for the anterior composite.

      PubDate: 2017-11-07T16:11:21Z
      DOI: 10.1016/j.bsbt.2016.09.002
  • The biological response of macrophages to PMMA particles with different
           morphology and size

    • Authors: R. Yoshioka; Y. Nakashima; Y. Fujiwara; Y. Komohara; M. Takeya; Y. Nakanishi
      Pages: 114 - 120
      Abstract: Publication date: September 2016
      Source:Biosurface and Biotribology, Volume 2, Issue 3
      Author(s): R. Yoshioka, Y. Nakashima, Y. Fujiwara, Y. Komohara, M. Takeya, Y. Nakanishi
      We used polymethylmethacrylate (PMMA) particles to investigate the relationship between particle properties and biological responses of macrophages. In a previous study, we reported that biological response of these immune cells was activated by a specific PMMA particle size. In this study, biological responses of macrophages to particle parameters other than and in conjunction with size were evaluated. However, particle size as a biologically active factor of the biological response has not been characterized in detail. Here, macrophage viability and proinflammatory cytokine production were investigated to elucidate the relationship between particle size, added volume, and added surface area, and the biological response of macrophages. Decrease of cell viability was observed when relatively large particles were tested (5.6–19.3μm). Production of proinflammatory cytokines was elicited by 5.6- and 9.6-μm particles. Cell death occurred when the added volume exceeded 1×105 μm3 per cell. Proinflammatory cytokines were produced upon stimulation with added volume between 1×105 and 4.5×105 μm3 per cell. Cell death was elicited when the added surface area per cell exceeded 1×105 μm2 and proinflammatory cytokines were produced with the added surface area per cell between 1×105 and 3×105 μm2. These results suggested that biologically active factors exert their effect through added volume and added surface area rather than through particle size. This work will contribute to biological responses after total joint replacement since particles generated in the joint as a result of load bearing lead to tissue reaction and joint loosening.

      PubDate: 2017-11-07T16:11:21Z
      DOI: 10.1016/j.bsbt.2016.09.003
  • Experiment study on puncture force between MIS suture needle and soft

    • Authors: X. Bao; W. Li; M. Lu; Z.R. Zhou
      Pages: 49 - 58
      Abstract: Publication date: June 2016
      Source:Biosurface and Biotribology, Volume 2, Issue 2
      Author(s): X. Bao, W. Li, M. Lu, Z.R. Zhou
      In this paper, the interactive action between minimally invasive surgical suture needle and soft tissue was investigated under different insertion velocities, needle geometries, insertion angles and tissue characteristics to simulate the real surgical suture needle-tissue operation conditions. Experimental results demonstrated that the process of insertion was divided into two phases: no break phase and break phase. The puncture force generated at the mutation point where the tissue surface was breached. The puncture force and time for the first puncture significantly decreased with the increasing insertion velocity. The needle with triangle cross-section tip and larger size showed higher puncture force than that with round cross-section and smaller one. The penetration force reduced evidently with the advancing insertion angle, and it reached the lowest value when the angle is 90°. Moreover, an empirical single-parameter model of third-degree polynomial could predict the stiffness when a suture needle inserted into a complex soft tissue and showed a good fit to the experiment data. The results would provide reliable and significant mechanical database for the design of force feedback system in the surgical suture, either in endoscopic surgery or robotic suturing.

      PubDate: 2017-11-07T16:11:21Z
      DOI: 10.1016/j.bsbt.2016.05.001
  • Design and optimization of a new geometric texture shape for the
           enhancement of hydrodynamic lubrication performance of parallel slider

    • Authors: M.S. Uddin; Y.W. Liu
      Pages: 59 - 69
      Abstract: Publication date: June 2016
      Source:Biosurface and Biotribology, Volume 2, Issue 2
      Author(s): M.S. Uddin, Y.W. Liu
      This paper presents design and optimization of a new ‘star-like’ texture shape with an aim to improve the tribological performance. Initial studies showed that the triangle effect is the most dominant in reducing the friction. Motivated with the triangle effect, a ‘star-like’ texture shape consisting of a series of triangular spikes around the centre of the texture is proposed. It is hypothesized that by increasing the triangular effect on a texture shape, the converging micro-wedge effect is expected to increase, hence increasing the film pressure and reducing the friction. Using the well-known Reynolds equation, numerical modelling of surface texturing is implemented via finite difference method. Simulation results showed that the number of apex points of the new ‘star-like’ texture has a significant effect on the film pressure and the friction coefficient. A 6-pointed texture at a texture density of 0.4 is shown to be the optimum shape. The new optimum star-like texture reduces the friction coefficient by 80%, 64.39%, 19.32% and 16.14%, as compared to ellipse, chevron, triangle and circle, respectively. This indicates the potential benefit of the proposed new shape in further enhancing the hydrodynamic lubrication performance of slider bearing contacts.

      PubDate: 2017-11-07T16:11:21Z
      DOI: 10.1016/j.bsbt.2016.05.002
  • Effects of the natural microstructures on the wettability of leaf surfaces

    • Authors: L.F. Wang; Z.D. Dai
      Pages: 70 - 74
      Abstract: Publication date: June 2016
      Source:Biosurface and Biotribology, Volume 2, Issue 2
      Author(s): L.F. Wang, Z.D. Dai
      The effects of natural microstructures on the wettability are investigated based on the systematic analysis on the contact angles and morphology of the leaf surfaces of four kinds of plants, Photinia serrulata, Ginkgo, Aloe vera and Hypericum monogynum. P. serrulata possesses the most wettable leaf surface due to the small corrugation and raised boundary of the microstructures, while H. monogynum leaf shows the largest contact angle as it exhibits corrugated microstructures with smaller pitch value and larger height compared with that of Aloe vera. The long-shaped and well aligned microstructures, which are beneficial for the diffusion of water, make the Ginkgo leaf surface to be hydrophilic. The study elaborates the effects of microstructures on the surface wettability, which shed light on the design of surfaces for different wettable needs.

      PubDate: 2017-11-07T16:11:21Z
      DOI: 10.1016/j.bsbt.2016.06.001
  • Quantifying the biotribological properties of forehead skin to enhance
           head impact simulations

    • Authors: M.D. Jones; B. Oates; P.S. Theobald
      Pages: 75 - 80
      Abstract: Publication date: June 2016
      Source:Biosurface and Biotribology, Volume 2, Issue 2
      Author(s): M.D. Jones, B. Oates, P.S. Theobald
      Head injury severity is dependent on the loading and accelerations experienced during, and immediately after, impact. In England and Wales alone, for example, 700,000 head injury cases are reported annually within Emergency Departments; however, there remains a lack of data that quantifies the fundamental interaction of the head with an impacting surface. The consequence of impact depends upon a precise understanding of the head–surface interaction; hence, there is a need to appreciate the magnitude of, and variation in, frictional coefficient between the head and a range of possible surfaces. This study develops and validates a novel protocol for quantifying friction between the forehead skin and some potential surfaces. Thirteen participants were recruited and four materials tested, with the lowest (0.11) and highest (1.64) dynamic frictional coefficients measured between skin, and expanded polystyrene and laminate flooring, respectively. Preliminary computational simulation identified that a modest variation in head–surface frictional coefficient (0.6 & 0.7) increases rotational accelerations by 23–33%. Hence, this study highlights the significance of the head–surface interaction, whilst providing some data that will assist investigators evaluating head impacts within both a domestic and sporting environment.

      PubDate: 2017-11-07T16:11:21Z
      DOI: 10.1016/j.bsbt.2016.07.001
  • Special issue on ITC Tokyo 2015 and The 8th International Biotribology

    • Authors: Kiyoshi Mabuchi; Yoshinori Sawae
      Abstract: Publication date: March 2016
      Source:Biosurface and Biotribology, Volume 2, Issue 1
      Author(s): Kiyoshi Mabuchi, Yoshinori Sawae

      PubDate: 2017-11-07T16:11:21Z
      DOI: 10.1016/s2405-4518(16)30009-5
  • Influence of indenter geometry on the frictional sliding resistance of
           tooth enamel

    • Authors: M.V. Swain; S. Michael; L.A. Thai; P.W. Lucas
      Abstract: Publication date: Available online 11 December 2017
      Source:Biosurface and Biotribology
      Author(s): M.V. Swain, S. Michael, L.A. Thai, P.W. Lucas
      Indentation force-displacement and sliding scratch resistance measurements have been conducted on orangutan tooth enamel. Tests were made with a corner-cube (CC), Berkovich, as well as spherical (nominally 1μm and 5μm radius) indenters. Indentation loads ranged from 100–5000μN and were also made on fused silica to calibrate the indenter tips. The frictional force as a function of sliding distance was measured with the atomic force microscope (AFM) option on the indenter system as well as using a high precision AFM and scanning electron microscope (SEM). The frictional resistance was found to be almost constant with indenter load for the CC and Berkovich indenters; for the CC, it depended upon the orientation of the sliding indenter. For the spherical indenters, the 1μm showed a sharp increase in frictional resistance with increasing load whereas for the 5μm tip there was minimal change. Observations of the resultant scratches showed ploughing/cutting with the sharp indenters and a transition from an “ironing” like deformation for all the 5μm tests and for the low load 1μm tip with ploughing at the heaviest load. In the case of the sharp tips a “metallic” like discontinuous swarf removal process was evident. It was found that the frictional resistance force scaled with the effective rake angle of the indenter tips. Implications of the current observations for understanding tooth wear are considered.

      PubDate: 2017-12-16T19:08:13Z
      DOI: 10.1016/j.bsbt.2017.11.003
  • Tooth microwear texture in odontocete whales: variation with tooth
           characteristics and implications for dietary analysis

    • Authors: Mark A. Purnell; Robert H. Goodall; Scott Thomson; Cory J.D. Matthews
      Abstract: Publication date: Available online 9 December 2017
      Source:Biosurface and Biotribology
      Author(s): Mark A. Purnell, Robert H. Goodall, Scott Thomson, Cory J.D. Matthews
      Understanding the diets and trophic relationships of toothed whales is central to understanding their roles in marine ecosystems, and associated conservation issues. Yet this is problematic because direct observation of what free ranging marine mammals eat is difficult. Quantitative 3D textural analysis of tooth microwear (DMTA) offers a new way of investigating diet in odontocetes and other marine mammals, but the application of this approach requires that we first understand how non-dietary variables affect the texture of microwear in odontocetes. Here we present the first analysis of microwear texture in odontocetes (beluga, Delphinapterus leucas) testing null hypotheses that microwear texture does not vary with dental surface tissue type (dentine, cementum), and that microwear texture does not vary with tooth characteristics (location in jaw, degree of wear, wear facet slope and facet orientation). Our results reveal that these variables have a significant impact on microwear textures, and thus have the potential to mask variation in texture caused by dietary differences. This does not mean that microwear texture analysis cannot be used as a tool for dietary analysis in toothed whales, but any future studies should adopt sampling protocols that standardize non-dietary variables to mitigate their effects in DMTA analysis.

      PubDate: 2017-12-16T19:08:13Z
      DOI: 10.1016/j.bsbt.2017.11.004
  • Attrition-corrosion of human dental enamel: A review

    • Authors: Yun-Qi Wu; Joseph A. Arsecularatne; Mark Hoffman
      Abstract: Publication date: Available online 9 December 2017
      Source:Biosurface and Biotribology
      Author(s): Yun-Qi Wu, Joseph A. Arsecularatne, Mark Hoffman
      Attrition-corrosion is a dental wear process involving enamel-on-enamel sliding contact in an acidic environment. Since it involves both mechanical and chemical effects, attrition-corrosion is considered more representative of the dental wear processes that occur in the oral environment. This paper reviews previous studies on the attrition-corrosion process of human enamel and the underlying wear mechanisms, and also compares them to the associated individual wear processes, attrition and corrosion. Additionally, factors influencing the wear behavior of attrition-corrosion, modelling of this process and finally, areas for further research are discussed.

      PubDate: 2017-12-16T19:08:13Z
      DOI: 10.1016/j.bsbt.2017.12.001
  • Dental biotribology: Wearing away the boundary between biology and

    • Authors: Peter S. Ungar; Zhongrong Zhou; Gyan Nagpal
      Abstract: Publication date: Available online 7 December 2017
      Source:Biosurface and Biotribology
      Author(s): Peter S. Ungar, Zhongrong Zhou, Gyan Nagpal

      PubDate: 2017-12-16T19:08:13Z
      DOI: 10.1016/j.bsbt.2017.11.002
  • Dental biotrobiology: Final thoughts and future directions

    • Authors: Zhongrong Zhou; Paul Constantino; Mark Hoffman; Mugino Kubo; Gildas Merceron; Mark Purnell; Eugeniusz Sajewicz; Gordon Sanson; Ellen Schulz-Kornas; Michael Swain; Mark Teaford; Jing Zheng; Linmao Qian; Licheng Hua; Peter Ungar
      Abstract: Publication date: Available online 7 December 2017
      Source:Biosurface and Biotribology
      Author(s): Zhongrong Zhou, Paul Constantino, Mark Hoffman, Mugino Kubo, Gildas Merceron, Mark Purnell, Eugeniusz Sajewicz, Gordon Sanson, Ellen Schulz-Kornas, Michael Swain, Mark Teaford, Jing Zheng, Linmao Qian, Licheng Hua, Peter Ungar

      PubDate: 2017-12-16T19:08:13Z
      DOI: 10.1016/j.bsbt.2017.11.001
  • In vivo rates of dental microwear formation in laboratory primates fed
           different food items

    • Authors: Mark F. Teaford; Peter S. ungar; Andrea B. Taylor; Callum F. Ross; Christopher J. Vinyard
      Abstract: Publication date: Available online 6 December 2017
      Source:Biosurface and Biotribology
      Author(s): Mark F. Teaford, Peter S. ungar, Andrea B. Taylor, Callum F. Ross, Christopher J. Vinyard

      PubDate: 2017-12-16T19:08:13Z
      DOI: 10.1016/j.bsbt.2017.11.005
  • Dental microwear texture analysis of extant sika deer with considerations
           on inter-microscope variability and surface preparation protocols

    • Authors: M.O. Kubo; E. Yamada; T. Kubo; N. Kohno
      Abstract: Publication date: Available online 6 December 2017
      Source:Biosurface and Biotribology
      Author(s): M.O. Kubo, E. Yamada, T. Kubo, N. Kohno
      Recently, dental microwear texture analysis (DMTA) has been applied to various kinds of vertebrates to infer dietary preference. More data are needed on inter-microscope variability to assure the objectivity and repeatability of this method. In the present paper, we investigated inter-microscope variability between two confocal laser microscopes with different specifications, as well as variability due to different protocols applied to the obtained surface before DMTA. We used two different methods of DMTA: the scale sensitive fractal analysis (SSFA) and the surface texture analysis (STA). We collected DMTA data of extant Japanese sika deer populations with varying diets. We found that different protocols produced significantly different results for both SSFA and STA, whereas nearly two thirds of the parameters were not significantly different between the machines when applying the same pre-analysis protocol. Finally, we analyzed DMTA data of 244 sika deer from 11 populations. Twenty nine parameters were significantly different among the populations. Tooth enamel surface of grazing sika deer is dominated by a number of well-aligned scratches, whereas that of browsing deer is more flattened and characterized by more sporadic pits. Therefore, DMTA can identify intraspecific variation in diets, which is smaller than the interspecific dietary variation in extant ruminants.

      PubDate: 2017-12-16T19:08:13Z
      DOI: 10.1016/j.bsbt.2017.11.006
  • Aims & Scope

    • Abstract: Publication date: September 2017
      Source:Biosurface and Biotribology, Volume 3, Issue 3

      PubDate: 2017-11-18T11:27:54Z
  • Polymer brushes for antibiofouling and lubrication

    • Authors: Wufang Yang; Feng Zhou
      Abstract: Publication date: Available online 1 November 2017
      Source:Biosurface and Biotribology
      Author(s): Wufang Yang, Feng Zhou
      Surface-initiated atom transfer radical polymerization (SI-ATRP) could provide many merits for the preparation of polymer brush, such as the well-defined chemical configurations, gradient, architecture and thickness. To date, SI-ATRP has been a popular strategy to tailor the physicochemical properties of material interfaces. In this short review, the recent progresses of our group and others’ in preparing methodologies of polymer brushes through SI-ATRP are highlighted in detail, including the fundamental mechanistic and superior characteristics. Some novel SI-ATRP techniques which are trigged by external-stimuli and the preparation of micro/nanoscale polymer hierarchical architecture with tailorable chemical components are also emphasized. Besides, since the polymer brush with different chemical components (e.g., single-component and multi-components) and multi-scale structural characteristics shows great impact on the physicochemical properties at interface and polymer brush are generally sensitive to the external stimuli, the polymer chains modified surfaces acted as smart materials show great potential in many fields. The application advancements of polymer brush are reviewed mainly in two aspects, including antibiofouling and lubrication. Finally, the opportunities and challenges for further application are addressed.

      PubDate: 2017-11-14T10:07:15Z
      DOI: 10.1016/j.bsbt.2017.10.001
  • “In vitro corrosion behaviour of phenolic coated nickel-titanium

    • Authors: Simon Longela; Athanasios Chatzitakis
      Abstract: Publication date: Available online 2 November 2017
      Source:Biosurface and Biotribology
      Author(s): Simon Longela, Athanasios Chatzitakis
      In this study, nickel-titanium surfaces are coated with phenolic thin films of tannic acid and pyrogallol with the purpose of studying their corrosion resistance in physiological environments. Three tests are performed: the open circuit potential test, potentiodynamic polarisation and potentiostatic electrochemical impedance spectroscopy. Polarisation measurements are scrutinized in order to gain knowledge concerning the kinetics of the cathodic and anodic reactions, while the open circuit potentials and impedance spectroscopy help to study the electrolyte-surficial interactions. It is found that coating nitinol with polyphenols results in depletion of the native oxide layer and thus a decrease of corrosion resistance. Pyrogallol coated nitinol surfaces are less electrochemically corrosion resistive than tannic acid. Therefore, it is proposed that tannic acid coated nitinol surfaces would be a better option if implanted on biomaterial surfaces.
      Graphical abstract image

      PubDate: 2017-11-07T16:11:21Z
      DOI: 10.1016/j.bsbt.2017.10.002
  • Aims & Scope

    • Abstract: Publication date: December 2016
      Source:Biosurface and Biotribology, Volume 2, Issue 4

      PubDate: 2017-11-07T16:11:21Z
  • Aims & Scope

    • Abstract: Publication date: September 2016
      Source:Biosurface and Biotribology, Volume 2, Issue 3

      PubDate: 2017-11-07T16:11:21Z
  • Aims & Scope

    • Abstract: Publication date: June 2016
      Source:Biosurface and Biotribology, Volume 2, Issue 2

      PubDate: 2017-11-07T16:11:21Z
  • Aims & Scope

    • Abstract: Publication date: March 2016
      Source:Biosurface and Biotribology, Volume 2, Issue 1

      PubDate: 2017-11-07T16:11:21Z
  • Aims & Scope

    • Abstract: Publication date: June 2017
      Source:Biosurface and Biotribology, Volume 3, Issue 2

      PubDate: 2017-09-24T04:23:14Z
  • Experimental creep behavior of porcine liver under indentation with
           laparoscopic grasper for MIS applications

    • Authors: Cheng-mo Cai; Qing-yuan Yu; Wei Li; Jing Zheng; Zhong-rong Zhou
      Abstract: Publication date: Available online 4 August 2017
      Source:Biosurface and Biotribology
      Author(s): Cheng-mo Cai, Qing-yuan Yu, Wei Li, Jing Zheng, Zhong-rong Zhou
      Mechanical response of soft tissues behaved disparate due to fast and large deformation during surgical grasping, so there is a need for experimental databases of biomechanical characteristics of soft tissue under the contact of MIS tool, which are more useful for designing new surgical instruments, training inexperienced surgeons, improving surgical simulations and developing surgical robotics system. A novel indentation test to simulate the real-time surgical operation condition was present in this paper. The creep behavior of porcine liver in vitro was studied under uniaxial indentation by using MIS grasper. The nominal stress between the grasper and the liver was 0.02 to 0.1MPa, the loading velocity was 1 to 3mm/s, and the holding time was 300s to simulate clamping tissue operation. Results showed that the creep process of the liver during 300s of duration can be divided into three stages: loading stage I, transition creep stage II and steady creep stage III. The creep characteristic of liver behaves time-dependent, load-dependent and strongly loading velocity-dependent due to its nonlinear viscoelastic characteristics and hysteresis characteristics. These creep behavior might also be associated with the deformation, migration and biochemical reaction of the liver cells. The phenomenological model derived in this paper may describe the creep behavior of the liver. The results would provide experimental databases and phenomenological models for investigating biomechanical characteristics of soft tissue under the contact of MIS tool.

      PubDate: 2017-08-09T15:38:31Z
      DOI: 10.1016/j.bsbt.2017.06.002
  • Preparation and Tribological properties of Fe-hydroxyapatite Bioceramics

    • Authors: S.X. Han; Z.W. Ning; K. Chen; J. Zheng
      Abstract: Publication date: Available online 22 July 2017
      Source:Biosurface and Biotribology
      Author(s): S.X. Han, Z.W. Ning, K. Chen, J. Zheng
      Pigmented tooth enamel is generally composed of iron-containing hydroxyapatite (Fe-HA), and thus exhibits high hardness and good wear resistant. In this study, Fe-HA powders were synthesized using ultrasonic-assisted microwave hydrothermal method and the tribological properties of the Fe-HA ceramics were evaluated, aiming to explore the improvement effect of iron element on the wear resistance of nano-hydroxyapatite. The influence of Fe content on the phase composition, crystal structure and morphology of Fe-HA powders were characterized by various microscopy characterizations. Results showed that the Fe content had a substantial influence on the morphology and crystal structure of Fe-HA powders. Compared with the pure HA ceramic, the prepared Fe-HA ceramics showed obviously better wear resistance.

      PubDate: 2017-07-24T09:04:45Z
      DOI: 10.1016/j.bsbt.2017.07.001
  • Could Ti6Al4V be alternative as a bearing surface articulated with polymer
           in artificial cervical disc'

    • Authors: Song Wang; Junzhe Zhenhua Liao Pingfa Feng Weiqiang Liu
      Abstract: Publication date: Available online 22 July 2017
      Source:Biosurface and Biotribology
      Author(s): Song Wang, Junzhe Lu, Zhenhua Liao, Pingfa Feng, Weiqiang Liu
      In order to study the feasibility for Ti6Al4V (TC4) used as a bearing surface in artificial cervical disc, the wear behaviors of polymer-on-Ti6Al4V pairs were assessed in vitro for 10 million cycles (MC) using a wear simulator. The material of polymer ball included conventional ultra-high molecular weight polyethylene (CPE), cross-linking UHMWPE (XPE) and poly ether ether ketone (PEEK). The artificial cervical disc was simplified and designed as a ball-on-socket model with the material configuration of CPE/TC4, XPE/TC4 and PEEK/TC4, respectively. The wear severity, location and damage type on the articulating surfaces were analyzed by SEM. The results indicated that the CPE and PEEK components revealed severe wear and surface damage with a mix failure mechanism of abrasive wear, ploughed grooves and fatigue cracks. For the polymer balls, the edge zone revealed more severe wear characterized by wear grooves and fatigue cracks as well as squeezing traces than the central zone characterized by linear and arc-shaped sliding scratches. In addition, there was a special damage type characterized by severe arc-shaped wear grooves in the edge zone of the polymer ball. However, TC4 component only indicated scratches after wear testing. The average wear rates were 0.83±0.23mg/MC, 0.15±0.08mg/MC and 1.28±0.32mg/MC for CPE/TC4, XPE/TC4 and PEEK/TC4 pair, respectively. Hence, XPE/TC4 pair was the most wear resistant. Considering the biotribological behavior in totality, TC4 may be alternative as a bearing surface articulated with polymer in artificial cervical disc.

      PubDate: 2017-07-24T09:04:45Z
  • Multi-scale analysis of cartilage surface for trapeziometacarpal

    • Authors: V. Spartacus; R. Vargiolu; H. Zahouani; M. Nemoz-Gaillard; P. Chabrand
      Abstract: Publication date: Available online 8 July 2017
      Source:Biosurface and Biotribology
      Author(s): V. Spartacus, R. Vargiolu, H. Zahouani, M. Nemoz-Gaillard, P. Chabrand

      PubDate: 2017-07-14T00:01:27Z
      DOI: 10.1016/j.bsbt.2017.06.001
  • A practical fabrication method of the gecko-inspired easy-removal skin

    • Authors: Qilan
      Abstract: Publication date: Available online 5 July 2017
      Source:Biosurface and Biotribology
      Author(s): Qilan Li
      Easy-removal skin adhesives require a robust reversible adhesion. This requirement is addressed in this study with the fabrication of PDMS micro-patterned surfaces that inspired by gecko feet. The design of these gecko-inspired structures were aimed to maximize the ratio between pull-off strength and peel strength. They were fabricated using the laser cutting technology which is typically used for industrial manufacturing applications. Several kinds of PDMS specimens in triangular, square and hexagonal patterns, as well as triangular, square, diamond and circular cross-sections were made. The wetting properties of the gecko-inspired surfaces were evaluated by contact angle measurements. Pull-off strength and peel strength measurements were performed against a silicon skin substitute. Multiple attachments were achieved on a range of preloads. The averaged pull-off strength under a preload 10N for 10s can reach up to approximately five times of peel strength when the peel angle is 30 degree. Also compared with conventional Band-Aids, a slight enhancement in attachment ability and a significant decrease in peel strength between the skin and the adhesives were consistently observed. Therefore, the fabrication of the gecko-inspired structures on the micro-molding of PDMS appeared to offer a near-practical way for manufacturing an easy-removal skin adhesives, albeit in its present form with a comparable adhesion strength and a decreased peel strength. The originality of this work is the reverse de-molding approach based on the combination of the cost- and time-efficient laser cutting methods and the Teflon film as the mold material, which avoid the limitation caused by taking PDMS structure out of the molds, so that provide more variations of the tip geometry. As such, a further development of this fabrication method might be of significant interest in a number of practical applications in skin tissue industrial design.

      PubDate: 2017-07-14T00:01:27Z
  • Aims & Scope

    • Abstract: Publication date: March 2017
      Source:Biosurface and Biotribology, Volume 3, Issue 1

      PubDate: 2017-05-04T16:57:50Z
  • Effect of dynamic loading versus static loading on the frictional behavior
           of a UHMWPE pin in artificial biolubricants

    • Authors: Alaleh Safari; Montserrat Espanol; Maria Pau Ginebra; Michel J. Cervantes; Nazanin Emami
      Abstract: Publication date: Available online 23 March 2017
      Source:Biosurface and Biotribology
      Author(s): Alaleh Safari, Montserrat Espanol, Maria Pau Ginebra, Michel J. Cervantes, Nazanin Emami
      To obtain reliable results from in vitro measurements on the tribological behavior of joint implant materials, the parameters of the measurements must simulate in vivo conditions. Although the nature of the load in human joints is dynamic, most of the studies using simple pin-on-disk tribometers were performed with a constant load. The current study focused on investigating the effect of dynamic loading in comparison with static loading in the tribological behavior of ultra-high-molecular-weight polyethylene (UHMWPE) sliding against a cobalt chromium molybdenum (CoCrMo) counter surface with different lubricants, where the effects of hyaluronic acid (HA) and protein content in the lubricants were also investigated. The results suggested that although the dynamic loading did not affect the friction evolution for any of the lubricants, the friction value decreased for the lubricants that did not contain HA. The results showed that higher protein content in the lubricant increased the friction coefficient, however, it provided the highest protection against wear for sliding surfaces.

      PubDate: 2017-03-24T12:20:56Z
      DOI: 10.1016/j.bsbt.2017.03.001
  • Marine Drag Reduction of Shark Skin Inspired Riblet Surfaces

    • Authors: Y.F. Fu; C.Y. Yuan; X.Q. Bai
      Abstract: Publication date: Available online 18 March 2017
      Source:Biosurface and Biotribology
      Author(s): Y.F. Fu, C.Y. Yuan, X.Q. Bai
      Shark skin inspired riblet surfaces have been known to have drag reduction effect for the over past 40 years. It first drew the attention from the aircraft industry. With the property of low drag and self-cleaning (antifouling), shark skin inspired riblet surfaces can also be used on navigation objects. In this paper, different marine drag reduction technologies are discussed, and a review of riblet performance studies is also given. Experimental parameters include riblet geometry, continuous and segmented configurations, fluid velocity (laminar and turbulent flow), fluid viscosity (water, oil and gas), and wettability are analyzed. However, force is obtained by area-weighted integral of shear stress distributions. So area of riblet surfaces is a crucial factor which has not been considered in many previous studies. An experiment is given to discuss the impact of area. This paper aims not only to contribute to a better understanding of marine drag reduction, but also to offer new perspectives to improve the current evaluation criteria of riblet drag reduction.

      PubDate: 2017-03-18T19:35:02Z
      DOI: 10.1016/j.bsbt.2017.02.001
  • Texture design for light touch perception

    • Authors: S. Zhang; X. Zeng; D.T.A. Matthews; A. Igartua; E. Rodriguez–Vidal; J. Contreras Fortes; E. Van Der Heide
      Abstract: Publication date: Available online 20 February 2017
      Source:Biosurface and Biotribology
      Author(s): S. Zhang, X. Zeng, D.T.A. Matthews, A. Igartua, E. Rodriguez–Vidal, J. Contreras Fortes, E. Van Der Heide
      This study focused on active light touch with predefined textures specially-designed for tactile perception. The counter-body material is stainless steel sheet. Three geometric structures (grid, crater and groove) were fabricated by pulsed laser surface texturing. A total number of twenty volunteers participated in the research which contains two parts: perception tests and skin friction measurements. The perception tests focused mainly on the participants׳ perceptual attributes: perceived roughness and perceived stickiness. For the skin friction measurements, a multi-axis force/torque transducer was used to measure the normal force and friction force between skin and counter-surface along with the fingertip position. The results of the predefined textures showed the ability to reduce skin friction due to the reduction of contact area. Moreover, the participants׳ perceptual attributes were greatly influenced by the predefined micro-structures in the light touch regime.

      PubDate: 2017-02-26T15:03:48Z
      DOI: 10.1016/j.bsbt.2017.02.002
  • Mussel-inspired nanostructured coatings assembled using polydopamine
           nanoparticles and hydroxyapatite nanorods for biomedical applications

    • Authors: Zhenming Wang; Pengfei Li; Yanan Jiang; Zhanrong Jia; Pengfei Tang; Xiong Lu; Fuzen Ren; Kefeng Wang; Huiping Yuan
      Abstract: Publication date: Available online 1 February 2017
      Source:Biosurface and Biotribology
      Author(s): Zhenming Wang, Pengfei Li, Yanan Jiang, Zhanrong Jia, Pengfei Tang, Xiong Lu, Fuzen Ren, Kefeng Wang, Huiping Yuan
      Producing hierarchical nanostructured coatings with a biomimetic composition is an effective surface modification strategy to improve the bioactivity of biomaterials. In this study, mussel-inspired polydopamine nanoparticles (PDA-NPs) and hydroxyapatite (HA) nanorods were used to modify Ti surfaces. Firstly, the PDA-NPs were prepared via oxidative self-polymerization of dopamine. Secondly, the HA nanorods were decorated with a PDA nanolayer in order to improve the adhesion of the HA nanorods. Thirdly, the PDA-NPs and PDA-decorated HA nanorods were alternately assembled to form a porous and hierarchical micro/nanostructured {PDA/HA} composite coating on the Ti surfaces. Finally, BMP-2 was immobilized on the {PDA/HA} composite coating using the functional groups of PDA. The BMP-2-loaded {PDA/HA} composite coating exhibited excellent biocompatibility and promoted the adhesion, proliferation, and differentiation of bone marrow stromal cells. The animal implantation tests indicated that the BMP-2-loaded {PDA/HA} composite coating promoted the formation of new bone tissue.

      PubDate: 2017-02-07T15:10:09Z
      DOI: 10.1016/j.bsbt.2017.01.001
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