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Materials Science

This page shows you the 20 most read items in the past 30 days within this specialty in the MedWorm directory.

Permeability of subcutaneous tissues surrounding long-term implants to oxygen.
We report oxygen flux recordings from electrochemical oxygen sensor devices with wireless telemetry implanted in subcutaneous porcine tissues. The devices remained implanted for up to 13 weeks and were removed with adjacent tissues at specified times for histologic examination. There are four main observations: (1) In the first few weeks after implantation, the oxygen flux to the sensors, or current density, declined to a sustained mean value, having unsynchronized cyclic variations around the mean; (2) The oxygen mass transfer resistance of the sensor membrane was negligible compared to that of the tissue, allowing for a ...
Source: Biomaterials - July 3, 2014 Category: Materials Science Authors: Kumosa LS, Routh TL, Lin JT, Lucisano JY, Gough DA Tags: Biomaterials Source Type: research

Carbon-Coated Magnetite Embedded on Carbon Nanotubes for Rechargeable Lithium and Sodium Batteries
ACS Applied Materials & InterfacesDOI: 10.1021/am502424j (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - July 14, 2014 Category: Materials Science Authors: Dae-Yeop Park and Seung-Taek Myung Source Type: research

Probing Opto-Mechanical Stresses within Azobenzene-Containing Photosensitive Polymer Films by a Thin Metal Film Placed Above
ACS Applied Materials & InterfacesDOI: 10.1021/am501870t (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - July 11, 2014 Category: Materials Science Authors: Nataraja Sekhar Yadavalli, Denis Korolkov, Jean-François Moulin, Margarita Krutyeva and Svetlana Santer Source Type: research

Methadone Safety: A Clinical Practice Guideline From the American Pain Society and College on Problems of Drug Dependence, in Collaboration With the Heart Rhythm Society
Abstract: Methadone is used for the treatment of opioid addiction and for treatment of chronic pain. The safety of methadone has been called into question by data indicating a large increase in the number of methadone-associated overdose deaths in recent years that has occurred in parallel with a dramatic rise in the use of methadone for chronic pain. The American Pain Society and the College on Problems of Drug Dependence, in collaboration with the Heart Rhythm Society, commissioned an interdisciplinary expert panel to develop a clinical practice guideline on safer prescribing of methadone for treatment of opioid addictio...
Source: The Journal of Pain - March 31, 2014 Category: Materials Science Authors: Roger Chou, Ricardo A. Cruciani, David A. Fiellin, Peggy Compton, John T. Farrar, Mark C. Haigney, Charles Inturrisi, John R. Knight, Shirley Otis-Green, Steven M. Marcus, Davendra Mehta, Marjorie C. Meyer, Russell Portenoy, Seddon Savage, Eric Strain, Sh Tags: Methadone Safety Guidelines Source Type: research

Hydrothermal Synthesis of CaIn2S4-Reduced Graphene Oxide Nanocomposites with Increased Photocatalytic Performance
ACS Applied Materials & InterfacesDOI: 10.1021/am5028296 (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - July 14, 2014 Category: Materials Science Authors: Jianjun Ding, Wenhao Yan, Song Sun, Jun Bao and Chen Gao Source Type: research

Porous chitosan scaffolds with surface micropatterning and inner porosity and their effects on Schwann cells.
In this study, the porous chitosan micropatterning with surface ridge/groove and inner porosity structure was fabricated using a combination of micromodeling and lyophilization method. The morphology and stability of the prepared chitosan micropatterning were evaluated, the regulation of Schwann cells behavior by chitosan micropatterning was evaluated. The results showed that the chitosan micropatterning displayed stripe-like structure with a clear and complete edge. The micropatterning with 30/30 μm was more stable than 20/20 μm sample. Schwann cells on chitosan micropatterning showed orientation adhesion and began to...
Source: Biomaterials - July 5, 2014 Category: Materials Science Authors: Li G, Zhao X, Zhao W, Zhang L, Wang C, Jiang M, Gu X, Yang Y Tags: Biomaterials Source Type: research

Fluorination of Polythiophene Derivatives for High Performance Organic Photovoltaics
Chemistry of MaterialsDOI: 10.1021/cm502229k (Source: Chemistry of Materials)
Source: Chemistry of Materials - July 14, 2014 Category: Materials Science Authors: Jea Woong Jo, Jae Woong Jung, Hsin-Wei Wang, Paul Kim, Thomas P. Russell and Won Ho Jo Source Type: research

High-Performance Nonvolatile Organic Transistor Memory Devices Using the Electrets of Semiconducting Blends
ACS Applied Materials & InterfacesDOI: 10.1021/am502732d (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - July 14, 2014 Category: Materials Science Authors: Yu-Cheng Chiu, Tzu-Ying Chen, Yougen Chen, Toshifumi Satoh, Toyoji Kakuchi and Wen-Chang Chen Source Type: research

Hierarchically Porous Aminosilica Monolith as a CO2 Adsorbent
ACS Applied Materials & InterfacesDOI: 10.1021/am5029022 (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - July 14, 2014 Category: Materials Science Authors: Young Gun Ko, Hyun Jeong Lee, Jae Yong Kim and Ung Su Choi Source Type: research

HNO3-Assisted Polyol Synthesis of Ultralarge Single-Crystalline Ag Microplates and Their Far Propagation Length of Surface Plasmon Polariton
ACS Applied Materials & InterfacesDOI: 10.1021/am502549d (Source: ACS Applied Materials and Interfaces)
Source: ACS Applied Materials and Interfaces - July 14, 2014 Category: Materials Science Authors: Cheng-Wei Chang, Fan-Cheng Lin, Chun-Ya Chiu, Chung-Yi Su, Jer-Shing Huang, Tsong-Pyng Perng and Ta-Jen Yen Source Type: research

Patterning Quasi-Periodic Co 2D-Clusters underneath Graphene on SiC(0001)
Chemistry of MaterialsDOI: 10.1021/cm501976b (Source: Chemistry of Materials)
Source: Chemistry of Materials - July 11, 2014 Category: Materials Science Authors: Luis Henrique de Lima, Richard Landers and Abner de Siervo Source Type: research

The mechanism of anti-osteoporosis effects of 3-hydroxybutyrate and derivatives under simulated microgravity.
This study showed that microbial polyhydroxyalkanoates (PHA) degradation product, and also ketone body 3-hydroxybutyrate acid (3HB) and its derivative 3-hydroxybutyrate methyl ester (3HBME) inhibit the development of osteoporosis in mice maintained under simulated microgravity, helping preserve bone microstructure and mechanical property. Mice orally administrated with 3HB or 3HBME recovered much more quickly from osteoporosis resulted from simulated microgravity compared with the controls without 3HB or 3HBME treatments due to less calcium loss to the sera. It was known that abnormal activation of osteoclasts induced by m...
Source: Biomaterials - June 26, 2014 Category: Materials Science Authors: Cao Q, Zhang J, Liu H, Wu Q, Chen J, Chen GQ Tags: Biomaterials Source Type: research

Branched-linear and agglomerate protein polymers as vaccine platforms.
In this study, technologies were developed to produce more sophisticated polyvalent complexes through both the dimerization and oligomerization natures of viral antigens. As proof of concept, branched-linear and agglomerate polymers were made via fusions of the dimeric glutathione-s-transferase (GST) with either a tetrameric hepatitis E virus (HEV) protruding protein or a 24-meric norovirus (NoV) protruding protein. Furthermore, a monomeric antigen, either the M2e epitope of influenza A virus or the VP8* antigen of rotavirus, was inserted and displayed by the polymer platform. All resulting polymers were easily produced in...
Source: Biomaterials - June 28, 2014 Category: Materials Science Authors: Wang L, Xia M, Huang P, Fang H, Cao D, Meng XJ, McNeal M, Jiang X, Tan M Tags: Biomaterials Source Type: research

Prevention of rejection of allogeneic endothelial cells in a biohybrid lung by silencing HLA-class I expression.
This study represents a new therapeutic concept in the field of cell and organ transplantation and may bring the bioartificial lung as an alternative to lung transplantation closer to reality. PMID: 24961166 [PubMed - as supplied by publisher] (Source: Biomaterials)
Source: Biomaterials - June 21, 2014 Category: Materials Science Authors: Wiegmann B, Figueiredo C, Gras C, Pflaum M, Schmeckebier S, Korossis S, Haverich A, Blasczyk R Tags: Biomaterials Source Type: research

Aptamer-functionalized superporous hydrogels for sequestration and release of growth factors regulated via molecular recognition.
This study was aimed at developing a superporous material system with a hydrogel and an aptamer to overcome these challenges. The results have shown that the superporous hydrogel is capable of instantaneously and fully sequestering a large amount of growth factors, owing to the presence of superporous architectures and aptamers. Moreover, the sequestering and loading procedure does not involve any harsh conditions. The release kinetics of growth factors can be molecularly modulated by either changing the binding affinity of the aptamer or by using a triggering effector. Therefore, this study presents a promising superporou...
Source: Biomaterials - June 18, 2014 Category: Materials Science Authors: Battig MR, Huang Y, Chen N, Wang Y Tags: Biomaterials Source Type: research

Gene transfection in complex media using PCBMAEE-PCBMA copolymer with both hydrolytic and zwitterionic blocks.
Abstract Safety and high efficacy of vectors are essential requirements for gene therapy. To address these challenges, poly(carboxy betaine methacrylate ethyl ester)-poly(carboxy betaine methacrylate) (PCBMAEE-PCBMA) diblock copolymers were synthesized to form core-shell vector for gene delivery. The hydrophobic PCBMAEE segment, a polyzwitterionic precursor, can condense plasmid DNA (pDNA) into a hydrophobic core, which improves pDNA protection from nuclease attack and maintains the condensed structure against dilution. Moreover, the hydrolysis of PCBMAEE in uptaken gene vectors can enhance the pDNA release and red...
Source: Biomaterials - June 19, 2014 Category: Materials Science Authors: Zhang J, Wang Z, Lin W, Chen S Tags: Biomaterials Source Type: research

Comparative Effectiveness of Traditional Chinese Medicine and Psychosocial Care in the Treatment of Temporomandibular Disorders–Associated Chronic Facial Pain
This study provides evidence that TMD patients referred for TCM in a community-based model will receive safe treatment that is likely to provide some short-term pain relief and improved quality of life. Similar designs may also apply to evaluations of other kinds of chronic pain. (ClinicalTrials.gov number NCT00856167).Perspective: This short-term comparative effectiveness study of chronic facial pain suggests that TCM is safe and frequently efficacious alone or subsequent to standard psychosocial interventions. TCM is widely available throughout North America and may provide clinicians and patients with a reasonable addit...
Source: The Journal of Pain - October 10, 2012 Category: Materials Science Authors: Cheryl Ritenbaugh, Richard Hammerschlag, Samuel F. Dworkin, Mikel G. Aickin, Scott D. Mist, Charles R. Elder, Richard E. Harris Tags: Original Reports Source Type: research

Obituary: John C. “Jack” Mitchem (1932–2012)
John Coate (“Jack”) Mitchem passed away on January 8, 2012 after a two year battle with cancer. Jack was born and raised in southern California. He moved to Oregon and earned a BS from Oregon State University in Game Management in 1954. He served on active duty in the U.S. Navy from 1954 to 1956, before returning to Oregon State to pursue an MS in Science Education, which was granted in 1958. He continued to serve in the Naval Reserve from 1957 to 1988, retiring at the rank of Captain. After teaching high school for one year, he enrolled in dental school at the University of Oregon Dental School in Portland and earned ...
Source: Dental Materials - July 30, 2012 Category: Materials Science Authors: Jack Ferracane Tags: Obituary Source Type: research

Pluronic-encapsulated natural chlorophyll nanocomposites for in vivo cancer imaging and photothermal/photodynamic therapies.
Abstract A great challenge in developing nanotechnologies for cancer diagnosis and therapy has been the combined functionalities required for complicated clinical procedures. Among all requirements, toxicity has been the major hurdle that has prevented most of the nano-carriers from clinical use. Here, we extracted chlorophyll (Chl) from vegetable and encapsulated it into polymer (pluronic F68, Plu) micelles for cancer imaging and therapy. The results showed that the Chl-containing nanocomposites were capable of mouse tumor targeting, and the nanocomposite fluorescence within the tumor sites remained at high intens...
Source: Biomaterials - July 4, 2014 Category: Materials Science Authors: Chu M, Li H, Wu Q, Wo F, Shi D Tags: Biomaterials Source Type: research

Synthesis and Properties of Step-Growth Polyamide Aerogels Cross-linked with Triacid Chlorides
Chemistry of MaterialsDOI: 10.1021/cm5012313 (Source: Chemistry of Materials)
Source: Chemistry of Materials - July 11, 2014 Category: Materials Science Authors: Jarrod C. Williams, Mary Ann B. Meador, Linda McCorkle, Carl Mueller and Nathan Wilmoth Source Type: research