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Specialty: Materials Science
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Total 154 results found since Jan 2013.
Corrugated Paraffin Nanocomposite Films as Large Stroke
Thermal Actuators and Self-Activating Thermal Interfaces
ACS Applied Materials & InterfacesDOI: 10.1021/acsami.5b01141
Source: ACS Applied Materials and Interfaces - April 9, 2015 Category: Materials Science Authors: Davor Copic and A. John Hart Source Type: research
Development of servo-type micro-hydromechanical deep-drawing apparatus and micro deep-drawing experiments of circular cups
Publication date: October 2015 Source:Journal of Materials Processing Technology, Volume 224 Author(s): H. Sato , K. Manabe , K. Ito , D. Wei , Z. Jiang A micro-hydromechanical deep-drawing (MHDD) apparatus for manufacturing a micro-complex-shape components and increasing of drawn cup accuracy has been developed in this study. This apparatus with simple tooling structure and forming process can achieve high dimensional accuracy using servo press mechanics with a double-action type, one-stroke forming process without transferring and positioning, force control, and fine flow rate control of the pressure medium. The develo...
Source: Journal of Materials Processing Technology - June 2, 2015 Category: Materials Science Source Type: research
Salvaging brain ischemia by increasing neuroprotectant uptake via nanoagonist mediated blood brain barrier permeability enhancement.
Abstract
Ischemic stroke is a leading cause of adult disability and cognitive impairment worldwide. Neuroprotective therapy aims to save neurons by impeding the deleterious ischemic insults. However, the low efficiency of the neuroprotectants crossing blood brain barrier (BBB) prevents their clinical translation. In this work, a nanoagonist (NA) was developed to enhance neuroprotectant uptake by specifically increasing BBB permeability in brain ischemia. This NA first targeted ischemic brain vasculatures, temporarily opened local BBB by activating adenosine 2A receptors, and up-regulated the neuroprotectant uptake...
Source: Biomaterials - July 10, 2015 Category: Materials Science Authors: Zheng S, Bai YY, Liu Y, Gao X, Li Y, Changyi Y, Wang Y, Chang D, Ju S, Li C Tags: Biomaterials Source Type: research
Fibrinolytic PLGA nanoparticles for slow clot lysis within abdominal aortic aneurysms attenuate proteolytic loss of vascular elastic matrix
Publication date: 1 February 2016 Source:Materials Science and Engineering: C, Volume 59 Author(s): Balakrishnan Sivaraman, Andrew Sylvester, Anand Ramamurthi Abdominal aortic aneurysms (AAAs) involve chronic overexpression of proteases in the aortic wall that result in disruption of elastic fibers and consequent loss of vessel elasticity. Nearly 75% of AAAs contain flow-obstructing, fibrin-rich intraluminal thrombi (ILT), which act as a) a bioinert shield, protecting the underlying AAA wall from high hemodynamic stresses, and b) a reservoir of inflammatory cells and proteases that cause matrix breakdown. For these re...
Source: Materials Science and Engineering: C - October 24, 2015 Category: Materials Science Source Type: research
A Neuroprotective Sericin Hydrogel As an Effective
Neuronal Cell Carrier for the Repair of Ischemic Stroke
ACS Applied Materials & InterfacesDOI: 10.1021/acsami.5b06804
Source: ACS Applied Materials and Interfaces - November 3, 2015 Category: Materials Science Authors: Zheng Wang, Jian Wang, Yang Jin, Zhen Luo, Wen Yang, Hongjian Xie, Kai Huang and Lin Wang Source Type: research
Code Validation and Development of User Routines for Microstructural Prediction with Qform
Publication date: 2015 Source:Materials Today: Proceedings, Volume 2, Issue 10, Part A Author(s): C. Bandini, B. Reggiani, L. Donati, L. Tomesani Aim of the present work is to validate the metal forming FE code QForm and to develop user routine for the prediction of microstructure evolution in 6XXX aluminum alloys. Preliminary simulations are carried out in order to select optimal friction models and coefficients among the several formulations available in the code. Numerical results are compared to grid-based visioplasticity experiments: the comparison is performed in term of grid deformation at the billet-tools int...
Source: Materials Today: Proceedings - December 4, 2015 Category: Materials Science Source Type: research
Damage analysis in mechanical clinching: Experimental and numerical study
Publication date: April 2016 Source:Journal of Materials Processing Technology, Volume 230 Author(s): F. Lambiase, A. Di Ilio A numerical model describing the evolution of ductile damage was developed to predict the onset of fracture during the clinch joining of thin aluminium AA6082-T6 sheets. The damage model was calibrated and validated using instrumented punch-out tests in order to increase the reliability and robustness of the damage parameter. An inverse analysis was performed (by varying the damage parameter) by minimizing the difference between the experimental and numerical prediction concerning the load-strok...
Source: Journal of Materials Processing Technology - December 11, 2015 Category: Materials Science Source Type: research
Implantable
Graphene-based Neural Electrode Interfaces
for Electrophysiology and Neurochemistry in In Vivo Hyperacute Stroke
Model
ACS Applied Materials & InterfacesDOI: 10.1021/acsami.5b08327
Source: ACS Applied Materials and Interfaces - December 31, 2015 Category: Materials Science Authors: Ta-Chung Liu, Min-Chieh Chuang, Chao-Yi Chu, Wei-Chen Huang, Hsin-Yi Lai, Chao-Ting Wang, Wei-Lin Chu, San-Yuan Chen and You-Yin Chen Source Type: research
Tribocorrosion behavior of hot pressed CoCrMo alloys in artificial saliva
Publication date: May 2016 Source:Tribology International, Volume 97 Author(s): M. Buciumeanu, A. Bagheri, J.C.M. Souza, F.S. Silva, B. Henriques The aim of this work was to investigate the influence of the processing conditions on the tribocorrosion behavior of hot pressed CoCrMo biomedical alloys. Several samples were processed as a function of different processing temperatures (900, 1000 and 1100°C) and times (10, 30 and 60min). Tribocorrosion tests were carried out in artificial saliva at 37°C, under 1N normal load, 1Hz frequency and 3mm stroke length. Open circuit potential was measured. The worn surfaces wer...
Source: Tribology International - February 20, 2016 Category: Materials Science Source Type: research
Optimization of a reshaping rivet to reduce the protrusion height and increase the strength of clinched joints
Publication date: August 2016 Source:Journal of Materials Processing Technology, Volume 234 Author(s): Chao Chen, Shengdun Zhao, Xiaolan Han, Minchao Cui, Shuqin Fan Conventional mechanical clinching attracted more and more attentions in recent years, but the application of mechanical clinching might be restricted because of the exterior protrusion above the sheets which could affect the performance of clinched joint. In order to reduce the protrusion height and increase the strength of clinched joints, a new method using a reshaping rivet to reshape the clinched joint was proposed in this paper. In the reshaping pr...
Source: Journal of Materials Processing Technology - March 13, 2016 Category: Materials Science Source Type: research
(412) Patient with altered mental status, an intrathecal pump, and an unknown dose of ziconotide
72 year old female with past medical history hypertension, CKD, depression, anxiety, remote history of delirium with psychosis during hospitalization, and chronic pain with intrathecal pump presented with altered mental status. Patient underwent CT head which did not show an acute stroke. Patient was treated for UTI early during her hospitalization without improvement in her confusion. An EEG did not show seizure activity or epileptiform discharges and an MRI did not show acute abnormalities. The primary team subsequently obtained a history of cognitive decline over the past 2-3 months that began shortly after the initiati...
Source: The Journal of Pain - March 31, 2016 Category: Materials Science Authors: K. Noon, T. Furnish Source Type: research
Human astrocytic grid networks patterned in parylene-C inlayed SiO2 trenches.
Abstract
Recent literature suggests that glia, and in particular astrocytes, should be studied as organised networks which communicate through gap junctions. Astrocytes, however, adhere to most surfaces and are highly mobile cells. In order to study, such organised networks effectively in vitro it is necessary to influence them to pattern to certain substrates whilst being repelled from others and to immobilise the astrocytes sufficiently such that they do not continue to migrate further whilst under study. In this article, we demonstrate for the first time how it is possible to facilitate the study of organised ...
Source: Biomaterials - August 3, 2016 Category: Materials Science Authors: Jordan MD, Raos BJ, Bunting AS, Murray AF, Graham ES, Unsworth CP Tags: Biomaterials Source Type: research
Constitutive equation for the hot deformation behavior of Csf/AZ91D composites and its validity for numerical simulation
Publication date: Available online 21 August 2016 Source:Mechanics of Materials Author(s): Zhenjun Wang, Lehua Qi, Gui Wang, Hejun Li, Matthew S. Dargusch The flow stress behavior of 10 vol. % short carbon fibers reinforced AZ91D composites (Csf/AZ91D) were investigated by hot compression test. The results show the flow stress reach the peak value at small strain and then decrease monotonically until the end of the large strain, which exhibits an obvious dynamic strain softening. The decrease of stress level with deformation temperature increasing or strain rate decreasing can be represented by Zener-Hollomon parameter in...
Source: Mechanics of Materials - August 21, 2016 Category: Materials Science Source Type: research
Fouling of submerged hollow fiber membrane filtration in turbulence: Statistical dependence and cost-benefit analysis
Publication date: 1 January 2017 Source:Journal of Membrane Science, Volume 521 Author(s): Masoud Pourbozorg, Tian Li, Adrian Wing-Keung Law In the present study, we expanded the scope to a full range of turbulence conditions with a total of 79 experiments, to establish the statistical dependence between the energy consumption due to turbulence dissipation and improved productivity with reduced membrane fouling so that the cost-benefit tradeoff can be evaluated. The turbulence was generated by vibrating perforated plates. Increasing vibration frequency/stroke or solidity of the perforated plate resulted in more intense tu...
Source: Journal of Membrane Science - September 9, 2016 Category: Materials Science Source Type: research
Performance on CI Engine Fuelled Honge Biodiesel Blended with Diesel
Publication date: 2016 Source:Materials Today: Proceedings, Volume 3, Issue 10, Part B Author(s): D Noel, Venkata Ramesh Mamilla, Y. Bharat Kumar, V. Trinath Present work includes preparation of HOME by honge oil and blending it with the diesel to use as CI engine fuel. Performance tests were carried out on single cylinder four stroke water cooled CI engine connected to an eddy current dynamometer with different percentage of HOME blended with the diesel at variable loads and constant rated speed. And found that H20 & H40 blends have relatively higher BTHE as that of neat diesel similarly volumetric efficiency of ...
Source: Materials Today: Proceedings - December 9, 2016 Category: Materials Science Source Type: research
