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https://www.readbyqxmd.com/read/28407961/bionic-multi-tentacled-ionic-liquid-modified-silica-gel-for-adsorption-and-separation-of-polyphenols-from-green-tea-camellia-sinensis-leaves
#1
Wei Zhang, Xueting Feng, Yohannes Alula, Shun Yao
For the first time, a new kind of bionic multi-tentacled ionic liquid-modified silica gel was synthesized and used as selective adsorbent in the preparative separation of tea polyphenols (TP) from green tea leaves. It was found that silica particles with polyvinyl alcohol chains modified by N-methyl imidazole proline salt (PVA·Im(+)·Pro(-)@SiO2) had the excellent performance in selective adsorption as well as fine separation for target compounds. The new adsorbent exhibited high adsorption capacity and good reusability, meanwhile the antioxidant activity of TP could be improved through its efficient enrichment...
September 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28402102/high-performance-piezoresistive-electronic-skin-with-bionic-hierarchical-microstructure-and-microcracks
#2
Pu Nie, Ranran Wang, Xiaojuan Xu, Yin Cheng, Xiao Wang, Liangjing Shi, Jing Sun
Electronic skin (E-skin), as a popular research topic at present, has achieved significant progress in a variety of sophisticated applications. However, the poor sensitivity and stability severely limit the development of its application. Here, we present a facile, cost-effective, and scalable method for manufacturing E-skin devices with bionic hierarchical microstructure and microcracks. Our devices exhibit high sensitivity (10 kPa-1) and excellent durability (10,000 cycles). The synergistic enhancement mechanism of the hierarchical microstructure and the microcracks on the conductive layers was discovered...
April 12, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28372192/biomimetic-elisa-detection-of-malachite-green-based-on-molecularly-imprinted-polymer-film
#3
Lu Li, Ai-Hong Peng, Zheng-Zhong Lin, Hui-Ping Zhong, Xiao-Mei Chen, Zhi-Yong Huang
A highly selective and sensitive enzyme-linked immunosorbent assay (ELISA) was developed for the detection of malachite green (MG) using a molecularly imprinted polymer (MIP) film as bionic antibody. The MIP film, based on the self-polymerization of dopamine, was fabricated on the surfaces of a 96-well microplate. It showed specific recognition for MG in aqueous solution. A direct competitive ELISA method was established with the sensitivity reaching 10.31μgL(-1) and the detection limit being 0.3μgL(-1). The cross-reactivity of two structural analogues to MG was less than 10%...
August 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28282899/testing-a-firefly-inspired-synchronization-algorithm-in-a-complex-wireless-sensor-network
#4
Chuangbo Hao, Ping Song, Cheng Yang, Xiongjun Liu
Data acquisition is the foundation of soft sensor and data fusion. Distributed data acquisition and its synchronization are the important technologies to ensure the accuracy of soft sensors. As a research topic in bionic science, the firefly-inspired algorithm has attracted widespread attention as a new synchronization method. Aiming at reducing the design difficulty of firefly-inspired synchronization algorithms for Wireless Sensor Networks (WSNs) with complex topologies, this paper presents a firefly-inspired synchronization algorithm based on a multiscale discrete phase model that can optimize the performance tradeoff between the network scalability and synchronization capability in a complex wireless sensor network...
March 8, 2017: Sensors
https://www.readbyqxmd.com/read/28261048/coupling-resistive-switching-devices-with-neurons-state-of-the-art-and-perspectives
#5
Alessandro Chiolerio, Michela Chiappalone, Paolo Ariano, Sergio Bocchini
Here we provide the state-of-the-art of bioelectronic interfacing between biological neuronal systems and artificial components, focusing the attention on the potentiality offered by intrinsically neuromorphic synthetic devices based on Resistive Switching (RS). Neuromorphic engineering is outside the scopes of this Perspective. Instead, our focus is on those materials and devices featuring genuine physical effects that could be sought as non-linearity, plasticity, excitation, and extinction which could be directly and more naturally coupled with living biological systems...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28253654/automatic-identification-of-hypernasality-in-normal-and-cleft-lip-and-palate-patients-with-acoustic-analysis-of-speech
#6
Marzieh Golabbakhsh, Fatemeh Abnavi, Mina Kadkhodaei Elyaderani, Fatemeh Derakhshandeh, Fatemeh Khanlar, Panying Rong, David P Kuehn
Hypernasality is seen in cleft lip and palate patients who had undergone repair surgery as a consequence of velopharyngeal insufficiency. Hypernasality has been studied by evaluation of perturbation, noise measures, and cepstral analysis of speech. In this study, feature extraction and analysis were performed during running speech using six different sentences. Jitter, shimmer, Mel frequency cepstral coefficients, bionic wavelet transform entropy, and bionic wavelet transform energy were calculated. Support vector machines were employed for classification of data to normal or hypernasal...
February 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28250792/traditional-chinese-medicine-bionic-tiger-bone-powder-for-the-treatment-of-ai-associated-musculoskeletal-symptoms
#7
Yifan Li, Zhenhua Zhang, Feifei Cui, Jialing Liu, Yitong Wang, Juling Jiang, Wenxin Ma, Wenping Lu
Background. Aromatase inhibitors (AIs) are used for adjuvant therapy of breast cancer; however AIMSS (AI-Associated Musculoskeletal Symptoms) can negatively affect quality of life and compliance. Most patients in China moved to TCM (traditional Chinese medicine) for help. TB (tiger bone) is used to treat bone disease, whose main ingredients are calcium and collagen. The objective of this study was to evaluate whether the TB prevented AIMSS in postmenopausal women with ER/PR+ breast cancer. Methods. We conducted a randomized, blind, controlled study of comparing TB versus placebo for 12 weeks in postmenopausal women with breast cancer who have taken AI for less than a month...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28247602/-study-on-the-acid-hydrolysis-fiber-remodeling-and-bionics-mineralization-of-rat-tail-tendon-collagen-type-%C3%A2
#8
Zhan Zhang, Chun Zhang, Qiaofeng Guo
Objective: To produce bionic bone material that is consistent with human bone in chemical composition and molecular structure using rat tail tendon collagen type Ⅰ. Methods: The type Ⅰcollagen derived from rat tail was extracted by acetic acid to form collagen fibers. The reconstructed collagen fibers were placed in the mineralized solution to mimic bone mineralization for 2-6 days. Bone mineralization was observed by transmission electron microscopy and electron diffraction.Results: Collagen fibers with characteristic D-Band structure were reconstructed by using rat tail tendon collagen type Ⅰ extracted with acid hydrolysis method...
May 25, 2016: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
https://www.readbyqxmd.com/read/28243053/bionic-design-of-wind-turbine-blade-based-on-long-eared-owl-s-airfoil
#9
Weijun Tian, Zhen Yang, Qi Zhang, Jiyue Wang, Ming Li, Yi Ma, Qian Cong
The main purpose of this paper is to demonstrate a bionic design for the airfoil of wind turbines inspired by the morphology of Long-eared Owl's wings. Glauert Model was adopted to design the standard blade and the bionic blade, respectively. Numerical analysis method was utilized to study the aerodynamic characteristics of the airfoils as well as the blades. Results show that the bionic airfoil inspired by the airfoil at the 50% aspect ratio of the Long-eared Owl's wing gives rise to a superior lift coefficient and stalling performance and thus can be beneficial to improving the performance of the wind turbine blade...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28225734/auditory-performance-and-electrical-stimulation-measures-in-cochlear-implant-recipients-with-auditory-neuropathy-compared-with-severe-to-profound-sensorineural-hearing-loss
#10
Joseph Attias, Tally Greenstein, Miriam Peled, David Ulanovski, Jay Wohlgelernter, Eyal Raveh
OBJECTIVES: The aim of the study was to compare auditory and speech outcomes and electrical parameters on average 8 years after cochlear implantation between children with isolated auditory neuropathy (AN) and children with sensorineural hearing loss (SNHL). DESIGN: The study was conducted at a tertiary, university-affiliated pediatric medical center. The cohort included 16 patients with isolated AN with current age of 5 to 12.2 years who had been using a cochlear implant for at least 3...
March 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28225213/a-dual-organic-transistor-based-tactile-perception-system-with-signal-processing-functionality
#11
Yaping Zang, Hongguang Shen, Dazhen Huang, Chong-An Di, Daoben Zhu
Organic-device-based tactile-perception systems can open up new opportunities for the next generation of intelligent products. To meet the critical requirements of artificial perception systems, the efficient construction of organic smart elements with integrated sensing and signal processing functionalities is highly desired, but remains a challenge. This study presents a dual-organic-transistor-based tactile-perception element (DOT-TPE) with biomimetic functionality by the construction of organic synaptic transistors with integrated sensing transistors...
February 22, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28217275/multicentre-evaluation-of-the-na%C3%A3-da-ci-q70-sound-processor-feedback-from-cochlear-implant-users-and-professionals
#12
Jeanette Martin, Christine Poncet-Wallet, Angelika Illg, Sarah Perrin-Webb, Lise Henderson, Nathalie Noël-Petroff, Gennaro Auletta, Maria Grazia Barezzani, Karim Houri, Indian Research Group, Heike Bagus, Ulrich Hoppe, Jane Humphries, Wiebke van Treeck, Jeroen J Briaire, Martina Brendel, Nathalie Mathias
The aim of this survey was to gather data from both implant recipients and professionals on the ease of use of the Naída CI Q70 (Naída CI) sound processor from Advanced Bionics and on the usefulness of the new functions and features available. A secondary objective was to investigate fitting practices with the new processor. A comprehensive user satisfaction survey was conducted in a total of 186 subjects from 24 centres. In parallel, 23 professional questionnaires were collected from 11 centres. Overall, there was high satisfaction with the Naída CI processor from adults, children, experienced and new CI users as well as from professionals...
August 23, 2016: Audiology Research
https://www.readbyqxmd.com/read/28216124/the-pattern-and-degree-of-capsular-fibrous-sheaths-surrounding-cochlear-electrode-arrays
#13
Reuven Ishai, Barbara S Herrmann, Joseph B Nadol, Alicia M Quesnel
An inflammatory tissue reaction around the electrode array of a cochlear implant (CI) is common, in particular at the electrode insertion region (cochleostomy) where mechanical trauma often occurs. However, the factors determining the amount and causes of fibrous reaction surrounding the stimulating electrode, especially medially near the perimodiolar location, are unclear. Temporal bone (TB) specimens from patients who had undergone cochlear implantation during life with either Advanced Bionics (AB) Clarion ™ or HiRes90K™ (Sylmar, CA, USA) devices that have a half-band and a pre-curved electrode, or Cochlear ™ Nucleus (Sydney, Australia) device that have a full-band and a straight electrode were evaluated...
May 2017: Hearing Research
https://www.readbyqxmd.com/read/28211795/a-murine-model-of-a-novel-surgical-architecture-for-proprioceptive-muscle-feedback-and-its-potential-application-to-control-of-advanced-limb-prostheses
#14
Tyler R Clites, Matthew J Carty, Shriya Srinivasan, Anthony N Zorzos, Hugh M Herr
OBJECTIVE: Proprioceptive mechanisms play a critical role in both reflexive and volitional lower extremity control. Significant strides have been made in the development of bionic limbs that are capable of bi-directional communication with the peripheral nervous system, but none of these systems have been capable of providing physiologically-relevant muscle-based proprioceptive feedback through natural neural pathways. In this study, we present the agonist-antagonist myoneural interface (AMI), a surgical approach with the capacity to provide graded kinesthetic feedback from a prosthesis through mechanical activation of native mechanoreceptors within residual agonist-antagonist muscle pairs...
February 17, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28203269/bionic-vision-based-intelligent-power-line-inspection-system
#15
Qingwu Li, Yunpeng Ma, Feijia He, Shuya Xi, Jinxin Xu
Detecting the threats of the external obstacles to the power lines can ensure the stability of the power system. Inspired by the attention mechanism and binocular vision of human visual system, an intelligent power line inspection system is presented in this paper. Human visual attention mechanism in this intelligent inspection system is used to detect and track power lines in image sequences according to the shape information of power lines, and the binocular visual model is used to calculate the 3D coordinate information of obstacles and power lines...
2017: Computational and Mathematical Methods in Medicine
https://www.readbyqxmd.com/read/28203220/proof-of-concept-of-an-online-emg-based-decoding-of-hand-postures-and-individual-digit-forces-for-prosthetic-hand-control
#16
Alycia Gailey, Panagiotis Artemiadis, Marco Santello
INTRODUCTION: Options currently available to individuals with upper limb loss range from prosthetic hands that can perform many movements, but require more cognitive effort to control, to simpler terminal devices with limited functional abilities. We attempted to address this issue by designing a myoelectric control system to modulate prosthetic hand posture and digit force distribution. METHODS: We recorded surface electromyographic (EMG) signals from five forearm muscles in eight able-bodied subjects while they modulated hand posture and the flexion force distribution of individual fingers...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28199121/smart-contact-lenses-with-graphene-coating-for-electromagnetic-interference-shielding-and-dehydration-protection
#17
Sangkyu Lee, Insu Jo, Sangmin Kang, Bongchul Jang, Joonhee Moon, Jong Bo Park, Soochang Lee, Sichul Rho, Youngsoo Kim, Byung Hee Hong
Recently, smart contact lenses with electronic circuits have been proposed for various sensor and display applications where the use of flexible and biologically stable electrode materials is essential. Graphene is an atomically thin carbon material with a two-dimensional hexagonal lattice that shows outstanding electrical and mechanical properties as well as excellent biocompatibility. In addition, graphene is capable of protecting eyes from electromagnectic (EM) waves that may cause eye diseases such as cataracts...
February 21, 2017: ACS Nano
https://www.readbyqxmd.com/read/28196304/cell-guidance-on-nanostructured-metal-based-surfaces
#18
REVIEW
Yulia Zhukova, Ekaterina V Skorb
Metal surface nanostructuring to guide cell behavior is an attractive strategy to improve parts of medical implants, lab-on-a-chip, soft robotics, self-assembled microdevices, and bionic devices. Here, we discus important parameters, relevant trends, and specific examples of metal surface nanostructuring to guide cell behavior on metal-based hybrid surfaces. Surface nanostructuring allows precise control of cell morphology, adhesion, internal organization, and function. Pre-organized metal nanostructuring and dynamic stimuli-responsive surfaces are used to study various cell behaviors...
February 14, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28183615/a-multi-walled-silk-fibroin-silk-sericin-nerve-conduit-coated-with-poly-lactic-co-glycolic-acid-sheath-for-peripheral-nerve-regeneration
#19
Jianwei Rao, Yan Cheng, Yanxiao Liu, Zhou Ye, Beilei Zhan, Daping Quan, Yangbin Xu
The linearly oriented multi-walled silk fibroin/silk sericin (SF/SS) nerve conduits (NCs) can provide physical cues similar to native peripheral nerve fasciculi, but the mechanical properties of which are not excellent enough. In this study, NCs with a novel and bionic design with dual structures were developed. The important features of our NCs is that the internal skeleton (the multi-walled SF/SS conduits) has a bionic structure similar to the architecture of native peripheral nerve fasciculi, which is beneficial for nerve regeneration, and the outer sheath (the hollow poly(lactic-co-glycolic acid) [PLGA] conduits) could provide strong mechanical protection for the internal skeleton...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28182541/a-new-magnetotactic-bacteria-optimization-algorithm-based-on-moment-migration
#20
Hongwei Mo, Lili Liu, Jiao Zhao
Magnetotactic bacteria is a kind of polyphyletic group of prokaryotes with the characteristics of magnetotaxis that make them orient and swim along geomagnetic field lines. Its distinct biology characteristics are useful to design new optimization technology. In this paper, a new bionic optimization algorithm named Magnetotactic Bacteria Moment Migration Algorithm (MBMMA) is proposed. In the proposed algorithm, the moments of a chain of magnetosomes are considered as solutions. The moments of relative good solutions can migrate each other to enhance the diversity of the MBMMA...
January 2017: IEEE/ACM Transactions on Computational Biology and Bioinformatics
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